SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-core.h"
  50 #include "iwl-4965.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53
  54 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
  55                                   struct iwl4965_tx_queue *txq);
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  90 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
  91 {
  92         u16 fc = le16_to_cpu(hdr->frame_control);
  93         int hdr_len = ieee80211_get_hdrlen(fc);
  94
  95         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
  96                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
  97         return NULL;
  98 }
  99
 100 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
 101                 struct iwl_priv *priv, enum ieee80211_band band)
 102 {
 103         return priv->hw->wiphy->bands[band];
 104 }
 105
 106 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 107 {
 108         /* Single white space is for Linksys APs */
 109         if (essid_len == 1 && essid[0] == ' ')
 110                 return 1;
 111
 112         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 113         while (essid_len) {
 114                 essid_len--;
 115                 if (essid[essid_len] != '\0')
 116                         return 0;
 117         }
 118
 119         return 1;
 120 }
 121
 122 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 123 {
 124         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 125         const char *s = essid;
 126         char *d = escaped;
 127
 128         if (iwl4965_is_empty_essid(essid, essid_len)) {
 129                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 130                 return escaped;
 131         }
 132
 133         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 134         while (essid_len--) {
 135                 if (*s == '\0') {
 136                         *d++ = '\\';
 137                         *d++ = '0';
 138                         s++;
 139                 } else
 140                         *d++ = *s++;
 141         }
 142         *d = '\0';
 143         return escaped;
 144 }
 145
 146 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 147  * DMA services
 148  *
 149  * Theory of operation
 150  *
 151  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 152  * of buffer descriptors, each of which points to one or more data buffers for
 153  * the device to read from or fill.  Driver and device exchange status of each
 154  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 155  * entries in each circular buffer, to protect against confusing empty and full
 156  * queue states.
 157  *
 158  * The device reads or writes the data in the queues via the device's several
 159  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 160  *
 161  * For Tx queue, there are low mark and high mark limits. If, after queuing
 162  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 163  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 164  * Tx queue resumed.
 165  *
 166  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 167  * queue (#4) for sending commands to the device firmware, and 15 other
 168  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 169  *
 170  * See more detailed info in iwl-4965-hw.h.
 171  ***************************************************/
 172
 173 int iwl4965_queue_space(const struct iwl4965_queue *q)
 174 {
 175         int s = q->read_ptr - q->write_ptr;
 176
 177         if (q->read_ptr > q->write_ptr)
 178                 s -= q->n_bd;
 179
 180         if (s <= 0)
 181                 s += q->n_window;
 182         /* keep some reserve to not confuse empty and full situations */
 183         s -= 2;
 184         if (s < 0)
 185                 s = 0;
 186         return s;
 187 }
 188
 189
 190 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 191 {
 192         return q->write_ptr > q->read_ptr ?
 193                 (i >= q->read_ptr && i < q->write_ptr) :
 194                 !(i < q->read_ptr && i >= q->write_ptr);
 195 }
 196
 197 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 198 {
 199         /* This is for scan command, the big buffer at end of command array */
 200         if (is_huge)
 201                 return q->n_window;     /* must be power of 2 */
 202
 203         /* Otherwise, use normal size buffers */
 204         return index & (q->n_window - 1);
 205 }
 206
 207 /**
 208  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 209  */
 210 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
 211                           int count, int slots_num, u32 id)
 212 {
 213         q->n_bd = count;
 214         q->n_window = slots_num;
 215         q->id = id;
 216
 217         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 218          * and iwl_queue_dec_wrap are broken. */
 219         BUG_ON(!is_power_of_2(count));
 220
 221         /* slots_num must be power-of-two size, otherwise
 222          * get_cmd_index is broken. */
 223         BUG_ON(!is_power_of_2(slots_num));
 224
 225         q->low_mark = q->n_window / 4;
 226         if (q->low_mark < 4)
 227                 q->low_mark = 4;
 228
 229         q->high_mark = q->n_window / 8;
 230         if (q->high_mark < 2)
 231                 q->high_mark = 2;
 232
 233         q->write_ptr = q->read_ptr = 0;
 234
 235         return 0;
 236 }
 237
 238 /**
 239  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 240  */
 241 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
 242                               struct iwl4965_tx_queue *txq, u32 id)
 243 {
 244         struct pci_dev *dev = priv->pci_dev;
 245
 246         /* Driver private data, only for Tx (not command) queues,
 247          * not shared with device. */
 248         if (id != IWL_CMD_QUEUE_NUM) {
 249                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 250                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 251                 if (!txq->txb) {
 252                         IWL_ERROR("kmalloc for auxiliary BD "
 253                                   "structures failed\n");
 254                         goto error;
 255                 }
 256         } else
 257                 txq->txb = NULL;
 258
 259         /* Circular buffer of transmit frame descriptors (TFDs),
 260          * shared with device */
 261         txq->bd = pci_alloc_consistent(dev,
 262                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 263                         &txq->q.dma_addr);
 264
 265         if (!txq->bd) {
 266                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 267                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 268                 goto error;
 269         }
 270         txq->q.id = id;
 271
 272         return 0;
 273
 274  error:
 275         if (txq->txb) {
 276                 kfree(txq->txb);
 277                 txq->txb = NULL;
 278         }
 279
 280         return -ENOMEM;
 281 }
 282
 283 /**
 284  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 285  */
 286 int iwl4965_tx_queue_init(struct iwl_priv *priv,
 287                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 288 {
 289         struct pci_dev *dev = priv->pci_dev;
 290         int len;
 291         int rc = 0;
 292
 293         /*
 294          * Alloc buffer array for commands (Tx or other types of commands).
 295          * For the command queue (#4), allocate command space + one big
 296          * command for scan, since scan command is very huge; the system will
 297          * not have two scans at the same time, so only one is needed.
 298          * For normal Tx queues (all other queues), no super-size command
 299          * space is needed.
 300          */
 301         len = sizeof(struct iwl_cmd) * slots_num;
 302         if (txq_id == IWL_CMD_QUEUE_NUM)
 303                 len +=  IWL_MAX_SCAN_SIZE;
 304         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 305         if (!txq->cmd)
 306                 return -ENOMEM;
 307
 308         /* Alloc driver data array and TFD circular buffer */
 309         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 310         if (rc) {
 311                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 312
 313                 return -ENOMEM;
 314         }
 315         txq->need_update = 0;
 316
 317         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 318          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 319         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 320
 321         /* Initialize queue's high/low-water marks, and head/tail indexes */
 322         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 323
 324         /* Tell device where to find queue */
 325         iwl4965_hw_tx_queue_init(priv, txq);
 326
 327         return 0;
 328 }
 329
 330 /**
 331  * iwl4965_tx_queue_free - Deallocate DMA queue.
 332  * @txq: Transmit queue to deallocate.
 333  *
 334  * Empty queue by removing and destroying all BD's.
 335  * Free all buffers.
 336  * 0-fill, but do not free "txq" descriptor structure.
 337  */
 338 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
 339 {
 340         struct iwl4965_queue *q = &txq->q;
 341         struct pci_dev *dev = priv->pci_dev;
 342         int len;
 343
 344         if (q->n_bd == 0)
 345                 return;
 346
 347         /* first, empty all BD's */
 348         for (; q->write_ptr != q->read_ptr;
 349              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 350                 iwl4965_hw_txq_free_tfd(priv, txq);
 351
 352         len = sizeof(struct iwl_cmd) * q->n_window;
 353         if (q->id == IWL_CMD_QUEUE_NUM)
 354                 len += IWL_MAX_SCAN_SIZE;
 355
 356         /* De-alloc array of command/tx buffers */
 357         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 358
 359         /* De-alloc circular buffer of TFDs */
 360         if (txq->q.n_bd)
 361                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 362                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 363
 364         /* De-alloc array of per-TFD driver data */
 365         if (txq->txb) {
 366                 kfree(txq->txb);
 367                 txq->txb = NULL;
 368         }
 369
 370         /* 0-fill queue descriptor structure */
 371         memset(txq, 0, sizeof(*txq));
 372 }
 373
 374 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 375
 376 /*************** STATION TABLE MANAGEMENT ****
 377  * mac80211 should be examined to determine if sta_info is duplicating
 378  * the functionality provided here
 379  */
 380
 381 /**************************************************************/
 382
 383 #if 0 /* temporary disable till we add real remove station */
 384 /**
 385  * iwl4965_remove_station - Remove driver's knowledge of station.
 386  *
 387  * NOTE:  This does not remove station from device's station table.
 388  */
 389 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 390 {
 391         int index = IWL_INVALID_STATION;
 392         int i;
 393         unsigned long flags;
 394
 395         spin_lock_irqsave(&priv->sta_lock, flags);
 396
 397         if (is_ap)
 398                 index = IWL_AP_ID;
 399         else if (is_broadcast_ether_addr(addr))
 400                 index = priv->hw_setting.bcast_sta_id;
 401         else
 402                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 403                         if (priv->stations[i].used &&
 404                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 405                                                 addr)) {
 406                                 index = i;
 407                                 break;
 408                         }
 409
 410         if (unlikely(index == IWL_INVALID_STATION))
 411                 goto out;
 412
 413         if (priv->stations[index].used) {
 414                 priv->stations[index].used = 0;
 415                 priv->num_stations--;
 416         }
 417
 418         BUG_ON(priv->num_stations < 0);
 419
 420 out:
 421         spin_unlock_irqrestore(&priv->sta_lock, flags);
 422         return 0;
 423 }
 424 #endif
 425
 426 /**
 427  * iwl4965_add_station_flags - Add station to tables in driver and device
 428  */
 429 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
 430                                 int is_ap, u8 flags, void *ht_data)
 431 {
 432         int i;
 433         int index = IWL_INVALID_STATION;
 434         struct iwl4965_station_entry *station;
 435         unsigned long flags_spin;
 436         DECLARE_MAC_BUF(mac);
 437
 438         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 439         if (is_ap)
 440                 index = IWL_AP_ID;
 441         else if (is_broadcast_ether_addr(addr))
 442                 index = priv->hw_setting.bcast_sta_id;
 443         else
 444                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 445                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 446                                                 addr)) {
 447                                 index = i;
 448                                 break;
 449                         }
 450
 451                         if (!priv->stations[i].used &&
 452                             index == IWL_INVALID_STATION)
 453                                 index = i;
 454                 }
 455
 456
 457         /* These two conditions have the same outcome, but keep them separate
 458           since they have different meanings */
 459         if (unlikely(index == IWL_INVALID_STATION)) {
 460                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 461                 return index;
 462         }
 463
 464         if (priv->stations[index].used &&
 465             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 466                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 467                 return index;
 468         }
 469
 470
 471         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 472         station = &priv->stations[index];
 473         station->used = 1;
 474         priv->num_stations++;
 475
 476         /* Set up the REPLY_ADD_STA command to send to device */
 477         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 478         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 479         station->sta.mode = 0;
 480         station->sta.sta.sta_id = index;
 481         station->sta.station_flags = 0;
 482
 483 #ifdef CONFIG_IWL4965_HT
 484         /* BCAST station and IBSS stations do not work in HT mode */
 485         if (index != priv->hw_setting.bcast_sta_id &&
 486             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 487                 iwl4965_set_ht_add_station(priv, index,
 488                                  (struct ieee80211_ht_info *) ht_data);
 489 #endif /*CONFIG_IWL4965_HT*/
 490
 491         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 492
 493         /* Add station to device's station table */
 494         iwl4965_send_add_station(priv, &station->sta, flags);
 495         return index;
 496
 497 }
 498
 499 /*************** DRIVER STATUS FUNCTIONS   *****/
 500
 501 static inline int iwl4965_is_ready(struct iwl_priv *priv)
 502 {
 503         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 504          * set but EXIT_PENDING is not */
 505         return test_bit(STATUS_READY, &priv->status) &&
 506                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 507                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 508 }
 509
 510 static inline int iwl4965_is_alive(struct iwl_priv *priv)
 511 {
 512         return test_bit(STATUS_ALIVE, &priv->status);
 513 }
 514
 515 static inline int iwl4965_is_init(struct iwl_priv *priv)
 516 {
 517         return test_bit(STATUS_INIT, &priv->status);
 518 }
 519
 520 static inline int iwl4965_is_rfkill(struct iwl_priv *priv)
 521 {
 522         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 523                test_bit(STATUS_RF_KILL_SW, &priv->status);
 524 }
 525
 526 static inline int iwl4965_is_ready_rf(struct iwl_priv *priv)
 527 {
 528
 529         if (iwl4965_is_rfkill(priv))
 530                 return 0;
 531
 532         return iwl4965_is_ready(priv);
 533 }
 534
 535 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 536
 537 /**
 538  * iwl4965_enqueue_hcmd - enqueue a uCode command
 539  * @priv: device private data point
 540  * @cmd: a point to the ucode command structure
 541  *
 542  * The function returns < 0 values to indicate the operation is
 543  * failed. On success, it turns the index (> 0) of command in the
 544  * command queue.
 545  */
 546 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 547 {
 548         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 549         struct iwl4965_queue *q = &txq->q;
 550         struct iwl4965_tfd_frame *tfd;
 551         u32 *control_flags;
 552         struct iwl_cmd *out_cmd;
 553         u32 idx;
 554         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 555         dma_addr_t phys_addr;
 556         int ret;
 557         unsigned long flags;
 558
 559         /* If any of the command structures end up being larger than
 560          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 561          * we will need to increase the size of the TFD entries */
 562         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 563                !(cmd->meta.flags & CMD_SIZE_HUGE));
 564
 565         if (iwl4965_is_rfkill(priv)) {
 566                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 567                 return -EIO;
 568         }
 569
 570         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 571                 IWL_ERROR("No space for Tx\n");
 572                 return -ENOSPC;
 573         }
 574
 575         spin_lock_irqsave(&priv->hcmd_lock, flags);
 576
 577         tfd = &txq->bd[q->write_ptr];
 578         memset(tfd, 0, sizeof(*tfd));
 579
 580         control_flags = (u32 *) tfd;
 581
 582         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 583         out_cmd = &txq->cmd[idx];
 584
 585         out_cmd->hdr.cmd = cmd->id;
 586         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 587         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 588
 589         /* At this point, the out_cmd now has all of the incoming cmd
 590          * information */
 591
 592         out_cmd->hdr.flags = 0;
 593         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 594                         INDEX_TO_SEQ(q->write_ptr));
 595         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 596                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 597
 598         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 599                         offsetof(struct iwl_cmd, hdr);
 600         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 601
 602         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 603                      "%d bytes at %d[%d]:%d\n",
 604                      get_cmd_string(out_cmd->hdr.cmd),
 605                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 606                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 607
 608         txq->need_update = 1;
 609
 610         /* Set up entry in queue's byte count circular buffer */
 611         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 612
 613         /* Increment and update queue's write index */
 614         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 615         iwl4965_tx_queue_update_write_ptr(priv, txq);
 616
 617         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 618         return ret ? ret : idx;
 619 }
 620
 621 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 622 {
 623         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
 624
 625         if (hw_decrypt)
 626                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 627         else
 628                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 629
 630 }
 631
 632 int iwl4965_send_statistics_request(struct iwl_priv *priv)
 633 {
 634         u32 flags = 0;
 635         return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 636                                       sizeof(flags), &flags);
 637 }
 638
 639 /**
 640  * iwl4965_rxon_add_station - add station into station table.
 641  *
 642  * there is only one AP station with id= IWL_AP_ID
 643  * NOTE: mutex must be held before calling this fnction
 644  */
 645 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
 646                                 const u8 *addr, int is_ap)
 647 {
 648         u8 sta_id;
 649
 650         /* Add station to device's station table */
 651 #ifdef CONFIG_IWL4965_HT
 652         struct ieee80211_conf *conf = &priv->hw->conf;
 653         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 654
 655         if ((is_ap) &&
 656             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 657             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 658                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 659                                                    0, cur_ht_config);
 660         else
 661 #endif /* CONFIG_IWL4965_HT */
 662                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 663                                                    0, NULL);
 664
 665         /* Set up default rate scaling table in device's station table */
 666         iwl4965_add_station(priv, addr, is_ap);
 667
 668         return sta_id;
 669 }
 670
 671 /**
 672  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 673  *
 674  * NOTE:  This is really only useful during development and can eventually
 675  * be #ifdef'd out once the driver is stable and folks aren't actively
 676  * making changes
 677  */
 678 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 679 {
 680         int error = 0;
 681         int counter = 1;
 682
 683         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 684                 error |= le32_to_cpu(rxon->flags &
 685                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 686                                  RXON_FLG_RADAR_DETECT_MSK));
 687                 if (error)
 688                         IWL_WARNING("check 24G fields %d | %d\n",
 689                                     counter++, error);
 690         } else {
 691                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 692                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 693                 if (error)
 694                         IWL_WARNING("check 52 fields %d | %d\n",
 695                                     counter++, error);
 696                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 697                 if (error)
 698                         IWL_WARNING("check 52 CCK %d | %d\n",
 699                                     counter++, error);
 700         }
 701         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 702         if (error)
 703                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 704
 705         /* make sure basic rates 6Mbps and 1Mbps are supported */
 706         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 707                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 708         if (error)
 709                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 710
 711         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 712         if (error)
 713                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 714
 715         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 716                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 717         if (error)
 718                 IWL_WARNING("check CCK and short slot %d | %d\n",
 719                             counter++, error);
 720
 721         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 722                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 723         if (error)
 724                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 725                             counter++, error);
 726
 727         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 728                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 729         if (error)
 730                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 731                             counter++, error);
 732
 733         if (error)
 734                 IWL_WARNING("Tuning to channel %d\n",
 735                             le16_to_cpu(rxon->channel));
 736
 737         if (error) {
 738                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 739                 return -1;
 740         }
 741         return 0;
 742 }
 743
 744 /**
 745  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 746  * @priv: staging_rxon is compared to active_rxon
 747  *
 748  * If the RXON structure is changing enough to require a new tune,
 749  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 750  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 751  */
 752 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 753 {
 754
 755         /* These items are only settable from the full RXON command */
 756         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 757             compare_ether_addr(priv->staging_rxon.bssid_addr,
 758                                priv->active_rxon.bssid_addr) ||
 759             compare_ether_addr(priv->staging_rxon.node_addr,
 760                                priv->active_rxon.node_addr) ||
 761             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 762                                priv->active_rxon.wlap_bssid_addr) ||
 763             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 764             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 765             (priv->staging_rxon.air_propagation !=
 766              priv->active_rxon.air_propagation) ||
 767             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 768              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 769             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 770              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 771             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 772             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 773                 return 1;
 774
 775         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 776          * be updated with the RXON_ASSOC command -- however only some
 777          * flag transitions are allowed using RXON_ASSOC */
 778
 779         /* Check if we are not switching bands */
 780         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 781             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 782                 return 1;
 783
 784         /* Check if we are switching association toggle */
 785         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 786                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 787                 return 1;
 788
 789         return 0;
 790 }
 791
 792 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
 793 {
 794         int rc = 0;
 795         struct iwl4965_rx_packet *res = NULL;
 796         struct iwl4965_rxon_assoc_cmd rxon_assoc;
 797         struct iwl_host_cmd cmd = {
 798                 .id = REPLY_RXON_ASSOC,
 799                 .len = sizeof(rxon_assoc),
 800                 .meta.flags = CMD_WANT_SKB,
 801                 .data = &rxon_assoc,
 802         };
 803         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
 804         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
 805
 806         if ((rxon1->flags == rxon2->flags) &&
 807             (rxon1->filter_flags == rxon2->filter_flags) &&
 808             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 809             (rxon1->ofdm_ht_single_stream_basic_rates ==
 810              rxon2->ofdm_ht_single_stream_basic_rates) &&
 811             (rxon1->ofdm_ht_dual_stream_basic_rates ==
 812              rxon2->ofdm_ht_dual_stream_basic_rates) &&
 813             (rxon1->rx_chain == rxon2->rx_chain) &&
 814             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 815                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 816                 return 0;
 817         }
 818
 819         rxon_assoc.flags = priv->staging_rxon.flags;
 820         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 821         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 822         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 823         rxon_assoc.reserved = 0;
 824         rxon_assoc.ofdm_ht_single_stream_basic_rates =
 825             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
 826         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
 827             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
 828         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
 829
 830         rc = iwl_send_cmd_sync(priv, &cmd);
 831         if (rc)
 832                 return rc;
 833
 834         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
 835         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 836                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
 837                 rc = -EIO;
 838         }
 839
 840         priv->alloc_rxb_skb--;
 841         dev_kfree_skb_any(cmd.meta.u.skb);
 842
 843         return rc;
 844 }
 845
 846 /**
 847  * iwl4965_commit_rxon - commit staging_rxon to hardware
 848  *
 849  * The RXON command in staging_rxon is committed to the hardware and
 850  * the active_rxon structure is updated with the new data.  This
 851  * function correctly transitions out of the RXON_ASSOC_MSK state if
 852  * a HW tune is required based on the RXON structure changes.
 853  */
 854 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 855 {
 856         /* cast away the const for active_rxon in this function */
 857         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 858         DECLARE_MAC_BUF(mac);
 859         int rc = 0;
 860
 861         if (!iwl4965_is_alive(priv))
 862                 return -1;
 863
 864         /* always get timestamp with Rx frame */
 865         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 866
 867         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 868         if (rc) {
 869                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 870                 return -EINVAL;
 871         }
 872
 873         /* If we don't need to send a full RXON, we can use
 874          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 875          * and other flags for the current radio configuration. */
 876         if (!iwl4965_full_rxon_required(priv)) {
 877                 rc = iwl4965_send_rxon_assoc(priv);
 878                 if (rc) {
 879                         IWL_ERROR("Error setting RXON_ASSOC "
 880                                   "configuration (%d).\n", rc);
 881                         return rc;
 882                 }
 883
 884                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 885
 886                 return 0;
 887         }
 888
 889         /* station table will be cleared */
 890         priv->assoc_station_added = 0;
 891
 892 #ifdef CONFIG_IWL4965_SENSITIVITY
 893         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 894         if (!priv->error_recovering)
 895                 priv->start_calib = 0;
 896
 897         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 898 #endif /* CONFIG_IWL4965_SENSITIVITY */
 899
 900         /* If we are currently associated and the new config requires
 901          * an RXON_ASSOC and the new config wants the associated mask enabled,
 902          * we must clear the associated from the active configuration
 903          * before we apply the new config */
 904         if (iwl4965_is_associated(priv) &&
 905             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 906                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 907                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 908
 909                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 910                                       sizeof(struct iwl4965_rxon_cmd),
 911                                       &priv->active_rxon);
 912
 913                 /* If the mask clearing failed then we set
 914                  * active_rxon back to what it was previously */
 915                 if (rc) {
 916                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 917                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 918                                   "configuration (%d).\n", rc);
 919                         return rc;
 920                 }
 921         }
 922
 923         IWL_DEBUG_INFO("Sending RXON\n"
 924                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 925                        "* channel = %d\n"
 926                        "* bssid = %s\n",
 927                        ((priv->staging_rxon.filter_flags &
 928                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 929                        le16_to_cpu(priv->staging_rxon.channel),
 930                        print_mac(mac, priv->staging_rxon.bssid_addr));
 931
 932         iwl4965_set_rxon_hwcrypto(priv, priv->cfg->mod_params->hw_crypto);
 933         /* Apply the new configuration */
 934         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 935                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
 936         if (rc) {
 937                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 938                 return rc;
 939         }
 940
 941         iwlcore_clear_stations_table(priv);
 942
 943 #ifdef CONFIG_IWL4965_SENSITIVITY
 944         if (!priv->error_recovering)
 945                 priv->start_calib = 0;
 946
 947         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 948         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 949 #endif /* CONFIG_IWL4965_SENSITIVITY */
 950
 951         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 952
 953         /* If we issue a new RXON command which required a tune then we must
 954          * send a new TXPOWER command or we won't be able to Tx any frames */
 955         rc = iwl4965_hw_reg_send_txpower(priv);
 956         if (rc) {
 957                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 958                 return rc;
 959         }
 960
 961         /* Add the broadcast address so we can send broadcast frames */
 962         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
 963             IWL_INVALID_STATION) {
 964                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 965                 return -EIO;
 966         }
 967
 968         /* If we have set the ASSOC_MSK and we are in BSS mode then
 969          * add the IWL_AP_ID to the station rate table */
 970         if (iwl4965_is_associated(priv) &&
 971             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 972                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 973                     == IWL_INVALID_STATION) {
 974                         IWL_ERROR("Error adding AP address for transmit.\n");
 975                         return -EIO;
 976                 }
 977                 priv->assoc_station_added = 1;
 978         }
 979
 980         return 0;
 981 }
 982
 983 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 984 {
 985         struct iwl4965_bt_cmd bt_cmd = {
 986                 .flags = 3,
 987                 .lead_time = 0xAA,
 988                 .max_kill = 1,
 989                 .kill_ack_mask = 0,
 990                 .kill_cts_mask = 0,
 991         };
 992
 993         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 994                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 995 }
 996
 997 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 998 {
 999         int rc = 0;
1000         struct iwl4965_rx_packet *res;
1001         struct iwl_host_cmd cmd = {
1002                 .id = REPLY_SCAN_ABORT_CMD,
1003                 .meta.flags = CMD_WANT_SKB,
1004         };
1005
1006         /* If there isn't a scan actively going on in the hardware
1007          * then we are in between scan bands and not actually
1008          * actively scanning, so don't send the abort command */
1009         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1010                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1011                 return 0;
1012         }
1013
1014         rc = iwl_send_cmd_sync(priv, &cmd);
1015         if (rc) {
1016                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1017                 return rc;
1018         }
1019
1020         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1021         if (res->u.status != CAN_ABORT_STATUS) {
1022                 /* The scan abort will return 1 for success or
1023                  * 2 for "failure".  A failure condition can be
1024                  * due to simply not being in an active scan which
1025                  * can occur if we send the scan abort before we
1026                  * the microcode has notified us that a scan is
1027                  * completed. */
1028                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1029                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1030                 clear_bit(STATUS_SCAN_HW, &priv->status);
1031         }
1032
1033         dev_kfree_skb_any(cmd.meta.u.skb);
1034
1035         return rc;
1036 }
1037
1038 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
1039                                         struct iwl_cmd *cmd,
1040                                         struct sk_buff *skb)
1041 {
1042         return 1;
1043 }
1044
1045 /*
1046  * CARD_STATE_CMD
1047  *
1048  * Use: Sets the device's internal card state to enable, disable, or halt
1049  *
1050  * When in the 'enable' state the card operates as normal.
1051  * When in the 'disable' state, the card enters into a low power mode.
1052  * When in the 'halt' state, the card is shut down and must be fully
1053  * restarted to come back on.
1054  */
1055 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1056 {
1057         struct iwl_host_cmd cmd = {
1058                 .id = REPLY_CARD_STATE_CMD,
1059                 .len = sizeof(u32),
1060                 .data = &flags,
1061                 .meta.flags = meta_flag,
1062         };
1063
1064         if (meta_flag & CMD_ASYNC)
1065                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1066
1067         return iwl_send_cmd(priv, &cmd);
1068 }
1069
1070 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
1071                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1072 {
1073         struct iwl4965_rx_packet *res = NULL;
1074
1075         if (!skb) {
1076                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1077                 return 1;
1078         }
1079
1080         res = (struct iwl4965_rx_packet *)skb->data;
1081         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1082                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1083                           res->hdr.flags);
1084                 return 1;
1085         }
1086
1087         switch (res->u.add_sta.status) {
1088         case ADD_STA_SUCCESS_MSK:
1089                 break;
1090         default:
1091                 break;
1092         }
1093
1094         /* We didn't cache the SKB; let the caller free it */
1095         return 1;
1096 }
1097
1098 int iwl4965_send_add_station(struct iwl_priv *priv,
1099                          struct iwl4965_addsta_cmd *sta, u8 flags)
1100 {
1101         struct iwl4965_rx_packet *res = NULL;
1102         int rc = 0;
1103         struct iwl_host_cmd cmd = {
1104                 .id = REPLY_ADD_STA,
1105                 .len = sizeof(struct iwl4965_addsta_cmd),
1106                 .meta.flags = flags,
1107                 .data = sta,
1108         };
1109
1110         if (flags & CMD_ASYNC)
1111                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1112         else
1113                 cmd.meta.flags |= CMD_WANT_SKB;
1114
1115         rc = iwl_send_cmd(priv, &cmd);
1116
1117         if (rc || (flags & CMD_ASYNC))
1118                 return rc;
1119
1120         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1121         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1122                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1123                           res->hdr.flags);
1124                 rc = -EIO;
1125         }
1126
1127         if (rc == 0) {
1128                 switch (res->u.add_sta.status) {
1129                 case ADD_STA_SUCCESS_MSK:
1130                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1131                         break;
1132                 default:
1133                         rc = -EIO;
1134                         IWL_WARNING("REPLY_ADD_STA failed\n");
1135                         break;
1136                 }
1137         }
1138
1139         priv->alloc_rxb_skb--;
1140         dev_kfree_skb_any(cmd.meta.u.skb);
1141
1142         return rc;
1143 }
1144
1145 static int iwl4965_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
1146                                    struct ieee80211_key_conf *keyconf,
1147                                    u8 sta_id)
1148 {
1149         unsigned long flags;
1150         __le16 key_flags = 0;
1151
1152         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
1153         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1154
1155         if (sta_id == priv->hw_setting.bcast_sta_id)
1156                 key_flags |= STA_KEY_MULTICAST_MSK;
1157
1158         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1159         keyconf->hw_key_idx = keyconf->keyidx;
1160
1161         key_flags &= ~STA_KEY_FLG_INVALID;
1162
1163         spin_lock_irqsave(&priv->sta_lock, flags);
1164         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1165         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1166
1167         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1168                keyconf->keylen);
1169
1170         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1171                keyconf->keylen);
1172
1173         priv->stations[sta_id].sta.key.key_offset
1174                         = (sta_id % STA_KEY_MAX_NUM);/*FIXME*/
1175         priv->stations[sta_id].sta.key.key_flags = key_flags;
1176         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1177         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1178
1179         spin_unlock_irqrestore(&priv->sta_lock, flags);
1180
1181         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1182         return iwl4965_send_add_station(priv,
1183                                 &priv->stations[sta_id].sta, CMD_ASYNC);
1184 }
1185
1186 static int iwl4965_set_tkip_dynamic_key_info(struct iwl_priv *priv,
1187                                    struct ieee80211_key_conf *keyconf,
1188                                    u8 sta_id)
1189 {
1190         unsigned long flags;
1191         int ret = 0;
1192
1193         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1194         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1195         keyconf->hw_key_idx = keyconf->keyidx;
1196
1197         spin_lock_irqsave(&priv->sta_lock, flags);
1198
1199         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1200         priv->stations[sta_id].keyinfo.conf = keyconf;
1201         priv->stations[sta_id].keyinfo.keylen = 16;
1202
1203         /* This copy is acutally not needed: we get the key with each TX */
1204         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
1205
1206         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
1207
1208         spin_unlock_irqrestore(&priv->sta_lock, flags);
1209
1210         return ret;
1211 }
1212
1213 static int iwl4965_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1214 {
1215         unsigned long flags;
1216
1217         spin_lock_irqsave(&priv->sta_lock, flags);
1218         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1219         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1220         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1221         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1222         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1223         spin_unlock_irqrestore(&priv->sta_lock, flags);
1224
1225         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1226         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1227         return 0;
1228 }
1229
1230 static int iwl4965_set_dynamic_key(struct iwl_priv *priv,
1231                                 struct ieee80211_key_conf *key, u8 sta_id)
1232 {
1233         int ret;
1234
1235         switch (key->alg) {
1236         case ALG_CCMP:
1237                 ret = iwl4965_set_ccmp_dynamic_key_info(priv, key, sta_id);
1238                 break;
1239         case ALG_TKIP:
1240                 ret = iwl4965_set_tkip_dynamic_key_info(priv, key, sta_id);
1241                 break;
1242         case ALG_WEP:
1243                 ret = -EOPNOTSUPP;
1244                 break;
1245         default:
1246                 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
1247                 ret = -EINVAL;
1248         }
1249
1250         return ret;
1251 }
1252
1253 static int iwl4965_remove_static_key(struct iwl_priv *priv)
1254 {
1255         int ret = -EOPNOTSUPP;
1256
1257         return ret;
1258 }
1259
1260 static int iwl4965_set_static_key(struct iwl_priv *priv,
1261                                 struct ieee80211_key_conf *key)
1262 {
1263         if (key->alg == ALG_WEP)
1264                 return -EOPNOTSUPP;
1265
1266         IWL_ERROR("Static key invalid: alg %d\n", key->alg);
1267         return -EINVAL;
1268 }
1269
1270 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1271 {
1272         struct list_head *element;
1273
1274         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1275                        priv->frames_count);
1276
1277         while (!list_empty(&priv->free_frames)) {
1278                 element = priv->free_frames.next;
1279                 list_del(element);
1280                 kfree(list_entry(element, struct iwl4965_frame, list));
1281                 priv->frames_count--;
1282         }
1283
1284         if (priv->frames_count) {
1285                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1286                             priv->frames_count);
1287                 priv->frames_count = 0;
1288         }
1289 }
1290
1291 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1292 {
1293         struct iwl4965_frame *frame;
1294         struct list_head *element;
1295         if (list_empty(&priv->free_frames)) {
1296                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1297                 if (!frame) {
1298                         IWL_ERROR("Could not allocate frame!\n");
1299                         return NULL;
1300                 }
1301
1302                 priv->frames_count++;
1303                 return frame;
1304         }
1305
1306         element = priv->free_frames.next;
1307         list_del(element);
1308         return list_entry(element, struct iwl4965_frame, list);
1309 }
1310
1311 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1312 {
1313         memset(frame, 0, sizeof(*frame));
1314         list_add(&frame->list, &priv->free_frames);
1315 }
1316
1317 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1318                                 struct ieee80211_hdr *hdr,
1319                                 const u8 *dest, int left)
1320 {
1321
1322         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1323             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1324              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1325                 return 0;
1326
1327         if (priv->ibss_beacon->len > left)
1328                 return 0;
1329
1330         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1331
1332         return priv->ibss_beacon->len;
1333 }
1334
1335 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1336 {
1337         u8 i;
1338
1339         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1340              i = iwl4965_rates[i].next_ieee) {
1341                 if (rate_mask & (1 << i))
1342                         return iwl4965_rates[i].plcp;
1343         }
1344
1345         return IWL_RATE_INVALID;
1346 }
1347
1348 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1349 {
1350         struct iwl4965_frame *frame;
1351         unsigned int frame_size;
1352         int rc;
1353         u8 rate;
1354
1355         frame = iwl4965_get_free_frame(priv);
1356
1357         if (!frame) {
1358                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1359                           "command.\n");
1360                 return -ENOMEM;
1361         }
1362
1363         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1364                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1365                                                 0xFF0);
1366                 if (rate == IWL_INVALID_RATE)
1367                         rate = IWL_RATE_6M_PLCP;
1368         } else {
1369                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1370                 if (rate == IWL_INVALID_RATE)
1371                         rate = IWL_RATE_1M_PLCP;
1372         }
1373
1374         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1375
1376         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1377                               &frame->u.cmd[0]);
1378
1379         iwl4965_free_frame(priv, frame);
1380
1381         return rc;
1382 }
1383
1384 /******************************************************************************
1385  *
1386  * Misc. internal state and helper functions
1387  *
1388  ******************************************************************************/
1389
1390 static void iwl4965_unset_hw_setting(struct iwl_priv *priv)
1391 {
1392         if (priv->hw_setting.shared_virt)
1393                 pci_free_consistent(priv->pci_dev,
1394                                     sizeof(struct iwl4965_shared),
1395                                     priv->hw_setting.shared_virt,
1396                                     priv->hw_setting.shared_phys);
1397 }
1398
1399 /**
1400  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1401  *
1402  * return : set the bit for each supported rate insert in ie
1403  */
1404 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1405                                     u16 basic_rate, int *left)
1406 {
1407         u16 ret_rates = 0, bit;
1408         int i;
1409         u8 *cnt = ie;
1410         u8 *rates = ie + 1;
1411
1412         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1413                 if (bit & supported_rate) {
1414                         ret_rates |= bit;
1415                         rates[*cnt] = iwl4965_rates[i].ieee |
1416                                 ((bit & basic_rate) ? 0x80 : 0x00);
1417                         (*cnt)++;
1418                         (*left)--;
1419                         if ((*left <= 0) ||
1420                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1421                                 break;
1422                 }
1423         }
1424
1425         return ret_rates;
1426 }
1427
1428 /**
1429  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1430  */
1431 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1432                                   enum ieee80211_band band,
1433                                   struct ieee80211_mgmt *frame,
1434                                   int left, int is_direct)
1435 {
1436         int len = 0;
1437         u8 *pos = NULL;
1438         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1439 #ifdef CONFIG_IWL4965_HT
1440         const struct ieee80211_supported_band *sband =
1441                                                 iwl4965_get_hw_mode(priv, band);
1442 #endif /* CONFIG_IWL4965_HT */
1443
1444         /* Make sure there is enough space for the probe request,
1445          * two mandatory IEs and the data */
1446         left -= 24;
1447         if (left < 0)
1448                 return 0;
1449         len += 24;
1450
1451         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1452         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1453         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1454         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1455         frame->seq_ctrl = 0;
1456
1457         /* fill in our indirect SSID IE */
1458         /* ...next IE... */
1459
1460         left -= 2;
1461         if (left < 0)
1462                 return 0;
1463         len += 2;
1464         pos = &(frame->u.probe_req.variable[0]);
1465         *pos++ = WLAN_EID_SSID;
1466         *pos++ = 0;
1467
1468         /* fill in our direct SSID IE... */
1469         if (is_direct) {
1470                 /* ...next IE... */
1471                 left -= 2 + priv->essid_len;
1472                 if (left < 0)
1473                         return 0;
1474                 /* ... fill it in... */
1475                 *pos++ = WLAN_EID_SSID;
1476                 *pos++ = priv->essid_len;
1477                 memcpy(pos, priv->essid, priv->essid_len);
1478                 pos += priv->essid_len;
1479                 len += 2 + priv->essid_len;
1480         }
1481
1482         /* fill in supported rate */
1483         /* ...next IE... */
1484         left -= 2;
1485         if (left < 0)
1486                 return 0;
1487
1488         /* ... fill it in... */
1489         *pos++ = WLAN_EID_SUPP_RATES;
1490         *pos = 0;
1491
1492         /* exclude 60M rate */
1493         active_rates = priv->rates_mask;
1494         active_rates &= ~IWL_RATE_60M_MASK;
1495
1496         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1497
1498         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1499         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1500                         active_rate_basic, &left);
1501         active_rates &= ~ret_rates;
1502
1503         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1504                                  active_rate_basic, &left);
1505         active_rates &= ~ret_rates;
1506
1507         len += 2 + *pos;
1508         pos += (*pos) + 1;
1509         if (active_rates == 0)
1510                 goto fill_end;
1511
1512         /* fill in supported extended rate */
1513         /* ...next IE... */
1514         left -= 2;
1515         if (left < 0)
1516                 return 0;
1517         /* ... fill it in... */
1518         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1519         *pos = 0;
1520         iwl4965_supported_rate_to_ie(pos, active_rates,
1521                                  active_rate_basic, &left);
1522         if (*pos > 0)
1523                 len += 2 + *pos;
1524
1525 #ifdef CONFIG_IWL4965_HT
1526         if (sband && sband->ht_info.ht_supported) {
1527                 struct ieee80211_ht_cap *ht_cap;
1528                 pos += (*pos) + 1;
1529                 *pos++ = WLAN_EID_HT_CAPABILITY;
1530                 *pos++ = sizeof(struct ieee80211_ht_cap);
1531                 ht_cap = (struct ieee80211_ht_cap *)pos;
1532                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1533                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1534                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1535                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
1536                                             ((sband->ht_info.ampdu_density << 2) &
1537                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
1538                 len += 2 + sizeof(struct ieee80211_ht_cap);
1539         }
1540 #endif  /*CONFIG_IWL4965_HT */
1541
1542  fill_end:
1543         return (u16)len;
1544 }
1545
1546 /*
1547  * QoS  support
1548 */
1549 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1550                                        struct iwl4965_qosparam_cmd *qos)
1551 {
1552
1553         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1554                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1555 }
1556
1557 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1558 {
1559         unsigned long flags;
1560
1561         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1562                 return;
1563
1564         if (!priv->qos_data.qos_enable)
1565                 return;
1566
1567         spin_lock_irqsave(&priv->lock, flags);
1568         priv->qos_data.def_qos_parm.qos_flags = 0;
1569
1570         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1571             !priv->qos_data.qos_cap.q_AP.txop_request)
1572                 priv->qos_data.def_qos_parm.qos_flags |=
1573                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1574         if (priv->qos_data.qos_active)
1575                 priv->qos_data.def_qos_parm.qos_flags |=
1576                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1577
1578 #ifdef CONFIG_IWL4965_HT
1579         if (priv->current_ht_config.is_ht)
1580                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1581 #endif /* CONFIG_IWL4965_HT */
1582
1583         spin_unlock_irqrestore(&priv->lock, flags);
1584
1585         if (force || iwl4965_is_associated(priv)) {
1586                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1587                                 priv->qos_data.qos_active,
1588                                 priv->qos_data.def_qos_parm.qos_flags);
1589
1590                 iwl4965_send_qos_params_command(priv,
1591                                 &(priv->qos_data.def_qos_parm));
1592         }
1593 }
1594
1595 /*
1596  * Power management (not Tx power!) functions
1597  */
1598 #define MSEC_TO_USEC 1024
1599
1600 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1601 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1602 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1603 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1604                                      __constant_cpu_to_le32(X1), \
1605                                      __constant_cpu_to_le32(X2), \
1606                                      __constant_cpu_to_le32(X3), \
1607                                      __constant_cpu_to_le32(X4)}
1608
1609
1610 /* default power management (not Tx power) table values */
1611 /* for tim  0-10 */
1612 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1613         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1614         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1615         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1616         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1617         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1618         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1619 };
1620
1621 /* for tim > 10 */
1622 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1623         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1624         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1625                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1626         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1627                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1628         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1629                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1630         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1631         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1632                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1633 };
1634
1635 int iwl4965_power_init_handle(struct iwl_priv *priv)
1636 {
1637         int rc = 0, i;
1638         struct iwl4965_power_mgr *pow_data;
1639         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1640         u16 pci_pm;
1641
1642         IWL_DEBUG_POWER("Initialize power \n");
1643
1644         pow_data = &(priv->power_data);
1645
1646         memset(pow_data, 0, sizeof(*pow_data));
1647
1648         pow_data->active_index = IWL_POWER_RANGE_0;
1649         pow_data->dtim_val = 0xffff;
1650
1651         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1652         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1653
1654         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1655         if (rc != 0)
1656                 return 0;
1657         else {
1658                 struct iwl4965_powertable_cmd *cmd;
1659
1660                 IWL_DEBUG_POWER("adjust power command flags\n");
1661
1662                 for (i = 0; i < IWL_POWER_AC; i++) {
1663                         cmd = &pow_data->pwr_range_0[i].cmd;
1664
1665                         if (pci_pm & 0x1)
1666                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1667                         else
1668                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1669                 }
1670         }
1671         return rc;
1672 }
1673
1674 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1675                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
1676 {
1677         int rc = 0, i;
1678         u8 skip;
1679         u32 max_sleep = 0;
1680         struct iwl4965_power_vec_entry *range;
1681         u8 period = 0;
1682         struct iwl4965_power_mgr *pow_data;
1683
1684         if (mode > IWL_POWER_INDEX_5) {
1685                 IWL_DEBUG_POWER("Error invalid power mode \n");
1686                 return -1;
1687         }
1688         pow_data = &(priv->power_data);
1689
1690         if (pow_data->active_index == IWL_POWER_RANGE_0)
1691                 range = &pow_data->pwr_range_0[0];
1692         else
1693                 range = &pow_data->pwr_range_1[1];
1694
1695         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1696
1697 #ifdef IWL_MAC80211_DISABLE
1698         if (priv->assoc_network != NULL) {
1699                 unsigned long flags;
1700
1701                 period = priv->assoc_network->tim.tim_period;
1702         }
1703 #endif  /*IWL_MAC80211_DISABLE */
1704         skip = range[mode].no_dtim;
1705
1706         if (period == 0) {
1707                 period = 1;
1708                 skip = 0;
1709         }
1710
1711         if (skip == 0) {
1712                 max_sleep = period;
1713                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1714         } else {
1715                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1716                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1717                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1718         }
1719
1720         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1721                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1722                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1723         }
1724
1725         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1726         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1727         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1728         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1729                         le32_to_cpu(cmd->sleep_interval[0]),
1730                         le32_to_cpu(cmd->sleep_interval[1]),
1731                         le32_to_cpu(cmd->sleep_interval[2]),
1732                         le32_to_cpu(cmd->sleep_interval[3]),
1733                         le32_to_cpu(cmd->sleep_interval[4]));
1734
1735         return rc;
1736 }
1737
1738 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1739 {
1740         u32 uninitialized_var(final_mode);
1741         int rc;
1742         struct iwl4965_powertable_cmd cmd;
1743
1744         /* If on battery, set to 3,
1745          * if plugged into AC power, set to CAM ("continuously aware mode"),
1746          * else user level */
1747         switch (mode) {
1748         case IWL_POWER_BATTERY:
1749                 final_mode = IWL_POWER_INDEX_3;
1750                 break;
1751         case IWL_POWER_AC:
1752                 final_mode = IWL_POWER_MODE_CAM;
1753                 break;
1754         default:
1755                 final_mode = mode;
1756                 break;
1757         }
1758
1759         cmd.keep_alive_beacons = 0;
1760
1761         iwl4965_update_power_cmd(priv, &cmd, final_mode);
1762
1763         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1764
1765         if (final_mode == IWL_POWER_MODE_CAM)
1766                 clear_bit(STATUS_POWER_PMI, &priv->status);
1767         else
1768                 set_bit(STATUS_POWER_PMI, &priv->status);
1769
1770         return rc;
1771 }
1772
1773 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1774 {
1775         /* Filter incoming packets to determine if they are targeted toward
1776          * this network, discarding packets coming from ourselves */
1777         switch (priv->iw_mode) {
1778         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
1779                 /* packets from our adapter are dropped (echo) */
1780                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1781                         return 0;
1782                 /* {broad,multi}cast packets to our IBSS go through */
1783                 if (is_multicast_ether_addr(header->addr1))
1784                         return !compare_ether_addr(header->addr3, priv->bssid);
1785                 /* packets to our adapter go through */
1786                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1787         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1788                 /* packets from our adapter are dropped (echo) */
1789                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1790                         return 0;
1791                 /* {broad,multi}cast packets to our BSS go through */
1792                 if (is_multicast_ether_addr(header->addr1))
1793                         return !compare_ether_addr(header->addr2, priv->bssid);
1794                 /* packets to our adapter go through */
1795                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1796         default:
1797                 break;
1798         }
1799
1800         return 1;
1801 }
1802
1803 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1804
1805 static const char *iwl4965_get_tx_fail_reason(u32 status)
1806 {
1807         switch (status & TX_STATUS_MSK) {
1808         case TX_STATUS_SUCCESS:
1809                 return "SUCCESS";
1810                 TX_STATUS_ENTRY(SHORT_LIMIT);
1811                 TX_STATUS_ENTRY(LONG_LIMIT);
1812                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1813                 TX_STATUS_ENTRY(MGMNT_ABORT);
1814                 TX_STATUS_ENTRY(NEXT_FRAG);
1815                 TX_STATUS_ENTRY(LIFE_EXPIRE);
1816                 TX_STATUS_ENTRY(DEST_PS);
1817                 TX_STATUS_ENTRY(ABORTED);
1818                 TX_STATUS_ENTRY(BT_RETRY);
1819                 TX_STATUS_ENTRY(STA_INVALID);
1820                 TX_STATUS_ENTRY(FRAG_DROPPED);
1821                 TX_STATUS_ENTRY(TID_DISABLE);
1822                 TX_STATUS_ENTRY(FRAME_FLUSHED);
1823                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1824                 TX_STATUS_ENTRY(TX_LOCKED);
1825                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1826         }
1827
1828         return "UNKNOWN";
1829 }
1830
1831 /**
1832  * iwl4965_scan_cancel - Cancel any currently executing HW scan
1833  *
1834  * NOTE: priv->mutex is not required before calling this function
1835  */
1836 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1837 {
1838         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1839                 clear_bit(STATUS_SCANNING, &priv->status);
1840                 return 0;
1841         }
1842
1843         if (test_bit(STATUS_SCANNING, &priv->status)) {
1844                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1845                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1846                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1847                         queue_work(priv->workqueue, &priv->abort_scan);
1848
1849                 } else
1850                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1851
1852                 return test_bit(STATUS_SCANNING, &priv->status);
1853         }
1854
1855         return 0;
1856 }
1857
1858 /**
1859  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1860  * @ms: amount of time to wait (in milliseconds) for scan to abort
1861  *
1862  * NOTE: priv->mutex must be held before calling this function
1863  */
1864 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1865 {
1866         unsigned long now = jiffies;
1867         int ret;
1868
1869         ret = iwl4965_scan_cancel(priv);
1870         if (ret && ms) {
1871                 mutex_unlock(&priv->mutex);
1872                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1873                                 test_bit(STATUS_SCANNING, &priv->status))
1874                         msleep(1);
1875                 mutex_lock(&priv->mutex);
1876
1877                 return test_bit(STATUS_SCANNING, &priv->status);
1878         }
1879
1880         return ret;
1881 }
1882
1883 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1884 {
1885         /* Reset ieee stats */
1886
1887         /* We don't reset the net_device_stats (ieee->stats) on
1888          * re-association */
1889
1890         priv->last_seq_num = -1;
1891         priv->last_frag_num = -1;
1892         priv->last_packet_time = 0;
1893
1894         iwl4965_scan_cancel(priv);
1895 }
1896
1897 #define MAX_UCODE_BEACON_INTERVAL       4096
1898 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1899
1900 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1901 {
1902         u16 new_val = 0;
1903         u16 beacon_factor = 0;
1904
1905         beacon_factor =
1906             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1907                 / MAX_UCODE_BEACON_INTERVAL;
1908         new_val = beacon_val / beacon_factor;
1909
1910         return cpu_to_le16(new_val);
1911 }
1912
1913 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1914 {
1915         u64 interval_tm_unit;
1916         u64 tsf, result;
1917         unsigned long flags;
1918         struct ieee80211_conf *conf = NULL;
1919         u16 beacon_int = 0;
1920
1921         conf = ieee80211_get_hw_conf(priv->hw);
1922
1923         spin_lock_irqsave(&priv->lock, flags);
1924         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
1925         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
1926
1927         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1928
1929         tsf = priv->timestamp1;
1930         tsf = ((tsf << 32) | priv->timestamp0);
1931
1932         beacon_int = priv->beacon_int;
1933         spin_unlock_irqrestore(&priv->lock, flags);
1934
1935         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1936                 if (beacon_int == 0) {
1937                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1938                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1939                 } else {
1940                         priv->rxon_timing.beacon_interval =
1941                                 cpu_to_le16(beacon_int);
1942                         priv->rxon_timing.beacon_interval =
1943                             iwl4965_adjust_beacon_interval(
1944                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1945                 }
1946
1947                 priv->rxon_timing.atim_window = 0;
1948         } else {
1949                 priv->rxon_timing.beacon_interval =
1950                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1951                 /* TODO: we need to get atim_window from upper stack
1952                  * for now we set to 0 */
1953                 priv->rxon_timing.atim_window = 0;
1954         }
1955
1956         interval_tm_unit =
1957                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1958         result = do_div(tsf, interval_tm_unit);
1959         priv->rxon_timing.beacon_init_val =
1960             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1961
1962         IWL_DEBUG_ASSOC
1963             ("beacon interval %d beacon timer %d beacon tim %d\n",
1964                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1965                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1966                 le16_to_cpu(priv->rxon_timing.atim_window));
1967 }
1968
1969 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1970 {
1971         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1972                 IWL_ERROR("APs don't scan.\n");
1973                 return 0;
1974         }
1975
1976         if (!iwl4965_is_ready_rf(priv)) {
1977                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1978                 return -EIO;
1979         }
1980
1981         if (test_bit(STATUS_SCANNING, &priv->status)) {
1982                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1983                 return -EAGAIN;
1984         }
1985
1986         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1987                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1988                                "Queuing.\n");
1989                 return -EAGAIN;
1990         }
1991
1992         IWL_DEBUG_INFO("Starting scan...\n");
1993         priv->scan_bands = 2;
1994         set_bit(STATUS_SCANNING, &priv->status);
1995         priv->scan_start = jiffies;
1996         priv->scan_pass_start = priv->scan_start;
1997
1998         queue_work(priv->workqueue, &priv->request_scan);
1999
2000         return 0;
2001 }
2002
2003
2004 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
2005                                           enum ieee80211_band band)
2006 {
2007         if (band == IEEE80211_BAND_5GHZ) {
2008                 priv->staging_rxon.flags &=
2009                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2010                       | RXON_FLG_CCK_MSK);
2011                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2012         } else {
2013                 /* Copied from iwl4965_bg_post_associate() */
2014                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2015                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2016                 else
2017                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2018
2019                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2020                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2021
2022                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2023                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2024                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2025         }
2026 }
2027
2028 /*
2029  * initialize rxon structure with default values from eeprom
2030  */
2031 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
2032 {
2033         const struct iwl_channel_info *ch_info;
2034
2035         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2036
2037         switch (priv->iw_mode) {
2038         case IEEE80211_IF_TYPE_AP:
2039                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2040                 break;
2041
2042         case IEEE80211_IF_TYPE_STA:
2043                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2044                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2045                 break;
2046
2047         case IEEE80211_IF_TYPE_IBSS:
2048                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2049                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2050                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2051                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2052                 break;
2053
2054         case IEEE80211_IF_TYPE_MNTR:
2055                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2056                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2057                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2058                 break;
2059         default:
2060                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
2061                 break;
2062         }
2063
2064 #if 0
2065         /* TODO:  Figure out when short_preamble would be set and cache from
2066          * that */
2067         if (!hw_to_local(priv->hw)->short_preamble)
2068                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2069         else
2070                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2071 #endif
2072
2073         ch_info = iwl_get_channel_info(priv, priv->band,
2074                                        le16_to_cpu(priv->staging_rxon.channel));
2075
2076         if (!ch_info)
2077                 ch_info = &priv->channel_info[0];
2078
2079         /*
2080          * in some case A channels are all non IBSS
2081          * in this case force B/G channel
2082          */
2083         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2084             !(is_channel_ibss(ch_info)))
2085                 ch_info = &priv->channel_info[0];
2086
2087         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2088         priv->band = ch_info->band;
2089
2090         iwl4965_set_flags_for_phymode(priv, priv->band);
2091
2092         priv->staging_rxon.ofdm_basic_rates =
2093             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2094         priv->staging_rxon.cck_basic_rates =
2095             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2096
2097         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2098                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2099         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2100         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2101         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2102         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2103         iwl4965_set_rxon_chain(priv);
2104 }
2105
2106 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
2107 {
2108         if (mode == IEEE80211_IF_TYPE_IBSS) {
2109                 const struct iwl_channel_info *ch_info;
2110
2111                 ch_info = iwl_get_channel_info(priv,
2112                         priv->band,
2113                         le16_to_cpu(priv->staging_rxon.channel));
2114
2115                 if (!ch_info || !is_channel_ibss(ch_info)) {
2116                         IWL_ERROR("channel %d not IBSS channel\n",
2117                                   le16_to_cpu(priv->staging_rxon.channel));
2118                         return -EINVAL;
2119                 }
2120         }
2121
2122         priv->iw_mode = mode;
2123
2124         iwl4965_connection_init_rx_config(priv);
2125         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2126
2127         iwlcore_clear_stations_table(priv);
2128
2129         /* dont commit rxon if rf-kill is on*/
2130         if (!iwl4965_is_ready_rf(priv))
2131                 return -EAGAIN;
2132
2133         cancel_delayed_work(&priv->scan_check);
2134         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2135                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2136                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2137                 return -EAGAIN;
2138         }
2139
2140         iwl4965_commit_rxon(priv);
2141
2142         return 0;
2143 }
2144
2145 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2146                                       struct ieee80211_tx_control *ctl,
2147                                       struct iwl_cmd *cmd,
2148                                       struct sk_buff *skb_frag,
2149                                       int sta_id)
2150 {
2151         struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
2152
2153         switch (keyinfo->alg) {
2154         case ALG_CCMP:
2155                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2156                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2157                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2158                         cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
2159                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2160                 break;
2161
2162         case ALG_TKIP:
2163                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2164                 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
2165                         IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
2166                 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
2167                 break;
2168
2169         case ALG_WEP:
2170                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2171                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2172
2173                 if (keyinfo->keylen == 13)
2174                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2175
2176                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2177
2178                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2179                              "with key %d\n", ctl->key_idx);
2180                 break;
2181
2182         default:
2183                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2184                 break;
2185         }
2186 }
2187
2188 /*
2189  * handle build REPLY_TX command notification.
2190  */
2191 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
2192                                   struct iwl_cmd *cmd,
2193                                   struct ieee80211_tx_control *ctrl,
2194                                   struct ieee80211_hdr *hdr,
2195                                   int is_unicast, u8 std_id)
2196 {
2197         __le16 *qc;
2198         u16 fc = le16_to_cpu(hdr->frame_control);
2199         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2200
2201         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2202         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2203                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2204                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2205                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2206                 if (ieee80211_is_probe_response(fc) &&
2207                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2208                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2209         } else {
2210                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2211                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2212         }
2213
2214         if (ieee80211_is_back_request(fc))
2215                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2216
2217
2218         cmd->cmd.tx.sta_id = std_id;
2219         if (ieee80211_get_morefrag(hdr))
2220                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2221
2222         qc = ieee80211_get_qos_ctrl(hdr);
2223         if (qc) {
2224                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2225                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2226         } else
2227                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2228
2229         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2230                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2231                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2232         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2233                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2234                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2235         }
2236
2237         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2238                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2239
2240         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2241         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2242                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2243                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2244                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2245                 else
2246                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2247         } else {
2248                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2249         }
2250
2251         cmd->cmd.tx.driver_txop = 0;
2252         cmd->cmd.tx.tx_flags = tx_flags;
2253         cmd->cmd.tx.next_frame_len = 0;
2254 }
2255 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2256 {
2257         /* 0 - mgmt, 1 - cnt, 2 - data */
2258         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2259         priv->tx_stats[idx].cnt++;
2260         priv->tx_stats[idx].bytes += len;
2261 }
2262 /**
2263  * iwl4965_get_sta_id - Find station's index within station table
2264  *
2265  * If new IBSS station, create new entry in station table
2266  */
2267 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2268                                 struct ieee80211_hdr *hdr)
2269 {
2270         int sta_id;
2271         u16 fc = le16_to_cpu(hdr->frame_control);
2272         DECLARE_MAC_BUF(mac);
2273
2274         /* If this frame is broadcast or management, use broadcast station id */
2275         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2276             is_multicast_ether_addr(hdr->addr1))
2277                 return priv->hw_setting.bcast_sta_id;
2278
2279         switch (priv->iw_mode) {
2280
2281         /* If we are a client station in a BSS network, use the special
2282          * AP station entry (that's the only station we communicate with) */
2283         case IEEE80211_IF_TYPE_STA:
2284                 return IWL_AP_ID;
2285
2286         /* If we are an AP, then find the station, or use BCAST */
2287         case IEEE80211_IF_TYPE_AP:
2288                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2289                 if (sta_id != IWL_INVALID_STATION)
2290                         return sta_id;
2291                 return priv->hw_setting.bcast_sta_id;
2292
2293         /* If this frame is going out to an IBSS network, find the station,
2294          * or create a new station table entry */
2295         case IEEE80211_IF_TYPE_IBSS:
2296                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2297                 if (sta_id != IWL_INVALID_STATION)
2298                         return sta_id;
2299
2300                 /* Create new station table entry */
2301                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2302                                                    0, CMD_ASYNC, NULL);
2303
2304                 if (sta_id != IWL_INVALID_STATION)
2305                         return sta_id;
2306
2307                 IWL_DEBUG_DROP("Station %s not in station map. "
2308                                "Defaulting to broadcast...\n",
2309                                print_mac(mac, hdr->addr1));
2310                 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2311                 return priv->hw_setting.bcast_sta_id;
2312
2313         default:
2314                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2315                 return priv->hw_setting.bcast_sta_id;
2316         }
2317 }
2318
2319 /*
2320  * start REPLY_TX command process
2321  */
2322 static int iwl4965_tx_skb(struct iwl_priv *priv,
2323                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2324 {
2325         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2326         struct iwl4965_tfd_frame *tfd;
2327         u32 *control_flags;
2328         int txq_id = ctl->queue;
2329         struct iwl4965_tx_queue *txq = NULL;
2330         struct iwl4965_queue *q = NULL;
2331         dma_addr_t phys_addr;
2332         dma_addr_t txcmd_phys;
2333         dma_addr_t scratch_phys;
2334         struct iwl_cmd *out_cmd = NULL;
2335         u16 len, idx, len_org;
2336         u8 id, hdr_len, unicast;
2337         u8 sta_id;
2338         u16 seq_number = 0;
2339         u16 fc;
2340         __le16 *qc;
2341         u8 wait_write_ptr = 0;
2342         unsigned long flags;
2343         int rc;
2344
2345         spin_lock_irqsave(&priv->lock, flags);
2346         if (iwl4965_is_rfkill(priv)) {
2347                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2348                 goto drop_unlock;
2349         }
2350
2351         if (!priv->vif) {
2352                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2353                 goto drop_unlock;
2354         }
2355
2356         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2357                 IWL_ERROR("ERROR: No TX rate available.\n");
2358                 goto drop_unlock;
2359         }
2360
2361         unicast = !is_multicast_ether_addr(hdr->addr1);
2362         id = 0;
2363
2364         fc = le16_to_cpu(hdr->frame_control);
2365
2366 #ifdef CONFIG_IWLWIFI_DEBUG
2367         if (ieee80211_is_auth(fc))
2368                 IWL_DEBUG_TX("Sending AUTH frame\n");
2369         else if (ieee80211_is_assoc_request(fc))
2370                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2371         else if (ieee80211_is_reassoc_request(fc))
2372                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2373 #endif
2374
2375         /* drop all data frame if we are not associated */
2376         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2377            (!iwl4965_is_associated(priv) ||
2378             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2379             !priv->assoc_station_added)) {
2380                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2381                 goto drop_unlock;
2382         }
2383
2384         spin_unlock_irqrestore(&priv->lock, flags);
2385
2386         hdr_len = ieee80211_get_hdrlen(fc);
2387
2388         /* Find (or create) index into station table for destination station */
2389         sta_id = iwl4965_get_sta_id(priv, hdr);
2390         if (sta_id == IWL_INVALID_STATION) {
2391                 DECLARE_MAC_BUF(mac);
2392
2393                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2394                                print_mac(mac, hdr->addr1));
2395                 goto drop;
2396         }
2397
2398         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2399
2400         qc = ieee80211_get_qos_ctrl(hdr);
2401         if (qc) {
2402                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2403                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2404                                 IEEE80211_SCTL_SEQ;
2405                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2406                         (hdr->seq_ctrl &
2407                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2408                 seq_number += 0x10;
2409 #ifdef CONFIG_IWL4965_HT
2410                 /* aggregation is on for this <sta,tid> */
2411                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2412                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2413                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2414 #endif /* CONFIG_IWL4965_HT */
2415         }
2416
2417         /* Descriptor for chosen Tx queue */
2418         txq = &priv->txq[txq_id];
2419         q = &txq->q;
2420
2421         spin_lock_irqsave(&priv->lock, flags);
2422
2423         /* Set up first empty TFD within this queue's circular TFD buffer */
2424         tfd = &txq->bd[q->write_ptr];
2425         memset(tfd, 0, sizeof(*tfd));
2426         control_flags = (u32 *) tfd;
2427         idx = get_cmd_index(q, q->write_ptr, 0);
2428
2429         /* Set up driver data for this TFD */
2430         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2431         txq->txb[q->write_ptr].skb[0] = skb;
2432         memcpy(&(txq->txb[q->write_ptr].status.control),
2433                ctl, sizeof(struct ieee80211_tx_control));
2434
2435         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2436         out_cmd = &txq->cmd[idx];
2437         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2438         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2439
2440         /*
2441          * Set up the Tx-command (not MAC!) header.
2442          * Store the chosen Tx queue and TFD index within the sequence field;
2443          * after Tx, uCode's Tx response will return this value so driver can
2444          * locate the frame within the tx queue and do post-tx processing.
2445          */
2446         out_cmd->hdr.cmd = REPLY_TX;
2447         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2448                                 INDEX_TO_SEQ(q->write_ptr)));
2449
2450         /* Copy MAC header from skb into command buffer */
2451         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2452
2453         /*
2454          * Use the first empty entry in this queue's command buffer array
2455          * to contain the Tx command and MAC header concatenated together
2456          * (payload data will be in another buffer).
2457          * Size of this varies, due to varying MAC header length.
2458          * If end is not dword aligned, we'll have 2 extra bytes at the end
2459          * of the MAC header (device reads on dword boundaries).
2460          * We'll tell device about this padding later.
2461          */
2462         len = priv->hw_setting.tx_cmd_len +
2463                 sizeof(struct iwl_cmd_header) + hdr_len;
2464
2465         len_org = len;
2466         len = (len + 3) & ~3;
2467
2468         if (len_org != len)
2469                 len_org = 1;
2470         else
2471                 len_org = 0;
2472
2473         /* Physical address of this Tx command's header (not MAC header!),
2474          * within command buffer array. */
2475         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2476                      offsetof(struct iwl_cmd, hdr);
2477
2478         /* Add buffer containing Tx command and MAC(!) header to TFD's
2479          * first entry */
2480         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2481
2482         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2483                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2484
2485         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2486          * if any (802.11 null frames have no payload). */
2487         len = skb->len - hdr_len;
2488         if (len) {
2489                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2490                                            len, PCI_DMA_TODEVICE);
2491                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2492         }
2493
2494         /* Tell 4965 about any 2-byte padding after MAC header */
2495         if (len_org)
2496                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2497
2498         /* Total # bytes to be transmitted */
2499         len = (u16)skb->len;
2500         out_cmd->cmd.tx.len = cpu_to_le16(len);
2501
2502         /* TODO need this for burst mode later on */
2503         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2504
2505         /* set is_hcca to 0; it probably will never be implemented */
2506         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2507
2508         iwl_update_tx_stats(priv, fc, len);
2509
2510         scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2511                 offsetof(struct iwl4965_tx_cmd, scratch);
2512         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2513         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2514
2515         if (!ieee80211_get_morefrag(hdr)) {
2516                 txq->need_update = 1;
2517                 if (qc) {
2518                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2519                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2520                 }
2521         } else {
2522                 wait_write_ptr = 1;
2523                 txq->need_update = 0;
2524         }
2525
2526         iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2527                            sizeof(out_cmd->cmd.tx));
2528
2529         iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2530                            ieee80211_get_hdrlen(fc));
2531
2532         /* Set up entry for this TFD in Tx byte-count array */
2533         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2534
2535         /* Tell device the write index *just past* this latest filled TFD */
2536         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2537         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2538         spin_unlock_irqrestore(&priv->lock, flags);
2539
2540         if (rc)
2541                 return rc;
2542
2543         if ((iwl4965_queue_space(q) < q->high_mark)
2544             && priv->mac80211_registered) {
2545                 if (wait_write_ptr) {
2546                         spin_lock_irqsave(&priv->lock, flags);
2547                         txq->need_update = 1;
2548                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2549                         spin_unlock_irqrestore(&priv->lock, flags);
2550                 }
2551
2552                 ieee80211_stop_queue(priv->hw, ctl->queue);
2553         }
2554
2555         return 0;
2556
2557 drop_unlock:
2558         spin_unlock_irqrestore(&priv->lock, flags);
2559 drop:
2560         return -1;
2561 }
2562
2563 static void iwl4965_set_rate(struct iwl_priv *priv)
2564 {
2565         const struct ieee80211_supported_band *hw = NULL;
2566         struct ieee80211_rate *rate;
2567         int i;
2568
2569         hw = iwl4965_get_hw_mode(priv, priv->band);
2570         if (!hw) {
2571                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2572                 return;
2573         }
2574
2575         priv->active_rate = 0;
2576         priv->active_rate_basic = 0;
2577
2578         for (i = 0; i < hw->n_bitrates; i++) {
2579                 rate = &(hw->bitrates[i]);
2580                 if (rate->hw_value < IWL_RATE_COUNT)
2581                         priv->active_rate |= (1 << rate->hw_value);
2582         }
2583
2584         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2585                        priv->active_rate, priv->active_rate_basic);
2586
2587         /*
2588          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2589          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2590          * OFDM
2591          */
2592         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2593                 priv->staging_rxon.cck_basic_rates =
2594                     ((priv->active_rate_basic &
2595                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2596         else
2597                 priv->staging_rxon.cck_basic_rates =
2598                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2599
2600         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2601                 priv->staging_rxon.ofdm_basic_rates =
2602                     ((priv->active_rate_basic &
2603                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2604                       IWL_FIRST_OFDM_RATE) & 0xFF;
2605         else
2606                 priv->staging_rxon.ofdm_basic_rates =
2607                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2608 }
2609
2610 static void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2611 {
2612         unsigned long flags;
2613
2614         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2615                 return;
2616
2617         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2618                           disable_radio ? "OFF" : "ON");
2619
2620         if (disable_radio) {
2621                 iwl4965_scan_cancel(priv);
2622                 /* FIXME: This is a workaround for AP */
2623                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2624                         spin_lock_irqsave(&priv->lock, flags);
2625                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2626                                     CSR_UCODE_SW_BIT_RFKILL);
2627                         spin_unlock_irqrestore(&priv->lock, flags);
2628                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2629                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2630                 }
2631                 return;
2632         }
2633
2634         spin_lock_irqsave(&priv->lock, flags);
2635         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2636
2637         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2638         spin_unlock_irqrestore(&priv->lock, flags);
2639
2640         /* wake up ucode */
2641         msleep(10);
2642
2643         spin_lock_irqsave(&priv->lock, flags);
2644         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2645         if (!iwl_grab_nic_access(priv))
2646                 iwl_release_nic_access(priv);
2647         spin_unlock_irqrestore(&priv->lock, flags);
2648
2649         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2650                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2651                                   "disabled by HW switch\n");
2652                 return;
2653         }
2654
2655         queue_work(priv->workqueue, &priv->restart);
2656         return;
2657 }
2658
2659 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2660                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2661 {
2662         u16 fc =
2663             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2664
2665         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2666                 return;
2667
2668         if (!(fc & IEEE80211_FCTL_PROTECTED))
2669                 return;
2670
2671         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2672         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2673         case RX_RES_STATUS_SEC_TYPE_TKIP:
2674                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2675                  * Decryption will be done in SW. */
2676                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2677                     RX_RES_STATUS_BAD_KEY_TTAK)
2678                         break;
2679
2680                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2681                     RX_RES_STATUS_BAD_ICV_MIC)
2682                         stats->flag |= RX_FLAG_MMIC_ERROR;
2683         case RX_RES_STATUS_SEC_TYPE_WEP:
2684         case RX_RES_STATUS_SEC_TYPE_CCMP:
2685                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2686                     RX_RES_STATUS_DECRYPT_OK) {
2687                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2688                         stats->flag |= RX_FLAG_DECRYPTED;
2689                 }
2690                 break;
2691
2692         default:
2693                 break;
2694         }
2695 }
2696
2697
2698 #define IWL_PACKET_RETRY_TIME HZ
2699
2700 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2701 {
2702         u16 sc = le16_to_cpu(header->seq_ctrl);
2703         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2704         u16 frag = sc & IEEE80211_SCTL_FRAG;
2705         u16 *last_seq, *last_frag;
2706         unsigned long *last_time;
2707
2708         switch (priv->iw_mode) {
2709         case IEEE80211_IF_TYPE_IBSS:{
2710                 struct list_head *p;
2711                 struct iwl4965_ibss_seq *entry = NULL;
2712                 u8 *mac = header->addr2;
2713                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2714
2715                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2716                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2717                         if (!compare_ether_addr(entry->mac, mac))
2718                                 break;
2719                 }
2720                 if (p == &priv->ibss_mac_hash[index]) {
2721                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2722                         if (!entry) {
2723                                 IWL_ERROR("Cannot malloc new mac entry\n");
2724                                 return 0;
2725                         }
2726                         memcpy(entry->mac, mac, ETH_ALEN);
2727                         entry->seq_num = seq;
2728                         entry->frag_num = frag;
2729                         entry->packet_time = jiffies;
2730                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2731                         return 0;
2732                 }
2733                 last_seq = &entry->seq_num;
2734                 last_frag = &entry->frag_num;
2735                 last_time = &entry->packet_time;
2736                 break;
2737         }
2738         case IEEE80211_IF_TYPE_STA:
2739                 last_seq = &priv->last_seq_num;
2740                 last_frag = &priv->last_frag_num;
2741                 last_time = &priv->last_packet_time;
2742                 break;
2743         default:
2744                 return 0;
2745         }
2746         if ((*last_seq == seq) &&
2747             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2748                 if (*last_frag == frag)
2749                         goto drop;
2750                 if (*last_frag + 1 != frag)
2751                         /* out-of-order fragment */
2752                         goto drop;
2753         } else
2754                 *last_seq = seq;
2755
2756         *last_frag = frag;
2757         *last_time = jiffies;
2758         return 0;
2759
2760  drop:
2761         return 1;
2762 }
2763
2764 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2765
2766 #include "iwl-spectrum.h"
2767
2768 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2769 #define BEACON_TIME_MASK_HIGH   0xFF000000
2770 #define TIME_UNIT               1024
2771
2772 /*
2773  * extended beacon time format
2774  * time in usec will be changed into a 32-bit value in 8:24 format
2775  * the high 1 byte is the beacon counts
2776  * the lower 3 bytes is the time in usec within one beacon interval
2777  */
2778
2779 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2780 {
2781         u32 quot;
2782         u32 rem;
2783         u32 interval = beacon_interval * 1024;
2784
2785         if (!interval || !usec)
2786                 return 0;
2787
2788         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2789         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2790
2791         return (quot << 24) + rem;
2792 }
2793
2794 /* base is usually what we get from ucode with each received frame,
2795  * the same as HW timer counter counting down
2796  */
2797
2798 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2799 {
2800         u32 base_low = base & BEACON_TIME_MASK_LOW;
2801         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2802         u32 interval = beacon_interval * TIME_UNIT;
2803         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2804             (addon & BEACON_TIME_MASK_HIGH);
2805
2806         if (base_low > addon_low)
2807                 res += base_low - addon_low;
2808         else if (base_low < addon_low) {
2809                 res += interval + base_low - addon_low;
2810                 res += (1 << 24);
2811         } else
2812                 res += (1 << 24);
2813
2814         return cpu_to_le32(res);
2815 }
2816
2817 static int iwl4965_get_measurement(struct iwl_priv *priv,
2818                                struct ieee80211_measurement_params *params,
2819                                u8 type)
2820 {
2821         struct iwl4965_spectrum_cmd spectrum;
2822         struct iwl4965_rx_packet *res;
2823         struct iwl_host_cmd cmd = {
2824                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2825                 .data = (void *)&spectrum,
2826                 .meta.flags = CMD_WANT_SKB,
2827         };
2828         u32 add_time = le64_to_cpu(params->start_time);
2829         int rc;
2830         int spectrum_resp_status;
2831         int duration = le16_to_cpu(params->duration);
2832
2833         if (iwl4965_is_associated(priv))
2834                 add_time =
2835                     iwl4965_usecs_to_beacons(
2836                         le64_to_cpu(params->start_time) - priv->last_tsf,
2837                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2838
2839         memset(&spectrum, 0, sizeof(spectrum));
2840
2841         spectrum.channel_count = cpu_to_le16(1);
2842         spectrum.flags =
2843             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2844         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2845         cmd.len = sizeof(spectrum);
2846         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2847
2848         if (iwl4965_is_associated(priv))
2849                 spectrum.start_time =
2850                     iwl4965_add_beacon_time(priv->last_beacon_time,
2851                                 add_time,
2852                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2853         else
2854                 spectrum.start_time = 0;
2855
2856         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2857         spectrum.channels[0].channel = params->channel;
2858         spectrum.channels[0].type = type;
2859         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2860                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2861                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2862
2863         rc = iwl_send_cmd_sync(priv, &cmd);
2864         if (rc)
2865                 return rc;
2866
2867         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2868         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2869                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2870                 rc = -EIO;
2871         }
2872
2873         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2874         switch (spectrum_resp_status) {
2875         case 0:         /* Command will be handled */
2876                 if (res->u.spectrum.id != 0xff) {
2877                         IWL_DEBUG_INFO
2878                             ("Replaced existing measurement: %d\n",
2879                              res->u.spectrum.id);
2880                         priv->measurement_status &= ~MEASUREMENT_READY;
2881                 }
2882                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2883                 rc = 0;
2884                 break;
2885
2886         case 1:         /* Command will not be handled */
2887                 rc = -EAGAIN;
2888                 break;
2889         }
2890
2891         dev_kfree_skb_any(cmd.meta.u.skb);
2892
2893         return rc;
2894 }
2895 #endif
2896
2897 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2898                                  struct iwl4965_tx_info *tx_sta)
2899 {
2900
2901         tx_sta->status.ack_signal = 0;
2902         tx_sta->status.excessive_retries = 0;
2903         tx_sta->status.queue_length = 0;
2904         tx_sta->status.queue_number = 0;
2905
2906         if (in_interrupt())
2907                 ieee80211_tx_status_irqsafe(priv->hw,
2908                                             tx_sta->skb[0], &(tx_sta->status));
2909         else
2910                 ieee80211_tx_status(priv->hw,
2911                                     tx_sta->skb[0], &(tx_sta->status));
2912
2913         tx_sta->skb[0] = NULL;
2914 }
2915
2916 /**
2917  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2918  *
2919  * When FW advances 'R' index, all entries between old and new 'R' index
2920  * need to be reclaimed. As result, some free space forms.  If there is
2921  * enough free space (> low mark), wake the stack that feeds us.
2922  */
2923 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2924 {
2925         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2926         struct iwl4965_queue *q = &txq->q;
2927         int nfreed = 0;
2928
2929         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2930                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2931                           "is out of range [0-%d] %d %d.\n", txq_id,
2932                           index, q->n_bd, q->write_ptr, q->read_ptr);
2933                 return 0;
2934         }
2935
2936         for (index = iwl_queue_inc_wrap(index, q->n_bd);
2937                 q->read_ptr != index;
2938                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2939                 if (txq_id != IWL_CMD_QUEUE_NUM) {
2940                         iwl4965_txstatus_to_ieee(priv,
2941                                         &(txq->txb[txq->q.read_ptr]));
2942                         iwl4965_hw_txq_free_tfd(priv, txq);
2943                 } else if (nfreed > 1) {
2944                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2945                                         q->write_ptr, q->read_ptr);
2946                         queue_work(priv->workqueue, &priv->restart);
2947                 }
2948                 nfreed++;
2949         }
2950
2951 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2952                         (txq_id != IWL_CMD_QUEUE_NUM) &&
2953                         priv->mac80211_registered)
2954                 ieee80211_wake_queue(priv->hw, txq_id); */
2955
2956
2957         return nfreed;
2958 }
2959
2960 static int iwl4965_is_tx_success(u32 status)
2961 {
2962         status &= TX_STATUS_MSK;
2963         return (status == TX_STATUS_SUCCESS)
2964             || (status == TX_STATUS_DIRECT_DONE);
2965 }
2966
2967 /******************************************************************************
2968  *
2969  * Generic RX handler implementations
2970  *
2971  ******************************************************************************/
2972 #ifdef CONFIG_IWL4965_HT
2973
2974 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2975                                     struct ieee80211_hdr *hdr)
2976 {
2977         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2978                 return IWL_AP_ID;
2979         else {
2980                 u8 *da = ieee80211_get_DA(hdr);
2981                 return iwl4965_hw_find_station(priv, da);
2982         }
2983 }
2984
2985 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2986         struct iwl_priv *priv, int txq_id, int idx)
2987 {
2988         if (priv->txq[txq_id].txb[idx].skb[0])
2989                 return (struct ieee80211_hdr *)priv->txq[txq_id].
2990                                 txb[idx].skb[0]->data;
2991         return NULL;
2992 }
2993
2994 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2995 {
2996         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2997                                 tx_resp->frame_count);
2998         return le32_to_cpu(*scd_ssn) & MAX_SN;
2999
3000 }
3001
3002 /**
3003  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3004  */
3005 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3006                                       struct iwl4965_ht_agg *agg,
3007                                       struct iwl4965_tx_resp_agg *tx_resp,
3008                                       u16 start_idx)
3009 {
3010         u16 status;
3011         struct agg_tx_status *frame_status = &tx_resp->status;
3012         struct ieee80211_tx_status *tx_status = NULL;
3013         struct ieee80211_hdr *hdr = NULL;
3014         int i, sh;
3015         int txq_id, idx;
3016         u16 seq;
3017
3018         if (agg->wait_for_ba)
3019                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3020
3021         agg->frame_count = tx_resp->frame_count;
3022         agg->start_idx = start_idx;
3023         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3024         agg->bitmap = 0;
3025
3026         /* # frames attempted by Tx command */
3027         if (agg->frame_count == 1) {
3028                 /* Only one frame was attempted; no block-ack will arrive */
3029                 status = le16_to_cpu(frame_status[0].status);
3030                 seq  = le16_to_cpu(frame_status[0].sequence);
3031                 idx = SEQ_TO_INDEX(seq);
3032                 txq_id = SEQ_TO_QUEUE(seq);
3033
3034                 /* FIXME: code repetition */
3035                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3036                                    agg->frame_count, agg->start_idx, idx);
3037
3038                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3039                 tx_status->retry_count = tx_resp->failure_frame;
3040                 tx_status->queue_number = status & 0xff;
3041                 tx_status->queue_length = tx_resp->failure_rts;
3042                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3043                 tx_status->flags = iwl4965_is_tx_success(status)?
3044                         IEEE80211_TX_STATUS_ACK : 0;
3045                 iwl4965_hwrate_to_tx_control(priv,
3046                                              le32_to_cpu(tx_resp->rate_n_flags),
3047                                              &tx_status->control);
3048                 /* FIXME: code repetition end */
3049
3050                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3051                                     status & 0xff, tx_resp->failure_frame);
3052                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3053                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3054
3055                 agg->wait_for_ba = 0;
3056         } else {
3057                 /* Two or more frames were attempted; expect block-ack */
3058                 u64 bitmap = 0;
3059                 int start = agg->start_idx;
3060
3061                 /* Construct bit-map of pending frames within Tx window */
3062                 for (i = 0; i < agg->frame_count; i++) {
3063                         u16 sc;
3064                         status = le16_to_cpu(frame_status[i].status);
3065                         seq  = le16_to_cpu(frame_status[i].sequence);
3066                         idx = SEQ_TO_INDEX(seq);
3067                         txq_id = SEQ_TO_QUEUE(seq);
3068
3069                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3070                                       AGG_TX_STATE_ABORT_MSK))
3071                                 continue;
3072
3073                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3074                                            agg->frame_count, txq_id, idx);
3075
3076                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3077
3078                         sc = le16_to_cpu(hdr->seq_ctrl);
3079                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3080                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3081                                           " idx=%d, seq_idx=%d, seq=%d\n",
3082                                           idx, SEQ_TO_SN(sc),
3083                                           hdr->seq_ctrl);
3084                                 return -1;
3085                         }
3086
3087                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3088                                            i, idx, SEQ_TO_SN(sc));
3089
3090                         sh = idx - start;
3091                         if (sh > 64) {
3092                                 sh = (start - idx) + 0xff;
3093                                 bitmap = bitmap << sh;
3094                                 sh = 0;
3095                                 start = idx;
3096                         } else if (sh < -64)
3097                                 sh  = 0xff - (start - idx);
3098                         else if (sh < 0) {
3099                                 sh = start - idx;
3100                                 start = idx;
3101                                 bitmap = bitmap << sh;
3102                                 sh = 0;
3103                         }
3104                         bitmap |= (1 << sh);
3105                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3106                                            start, (u32)(bitmap & 0xFFFFFFFF));
3107                 }
3108
3109                 agg->bitmap = bitmap;
3110                 agg->start_idx = start;
3111                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3112                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3113                                    agg->frame_count, agg->start_idx,
3114                                    agg->bitmap);
3115
3116                 if (bitmap)
3117                         agg->wait_for_ba = 1;
3118         }
3119         return 0;
3120 }
3121 #endif
3122
3123 /**
3124  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3125  */
3126 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3127                             struct iwl4965_rx_mem_buffer *rxb)
3128 {
3129         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3130         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3131         int txq_id = SEQ_TO_QUEUE(sequence);
3132         int index = SEQ_TO_INDEX(sequence);
3133         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3134         struct ieee80211_tx_status *tx_status;
3135         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3136         u32  status = le32_to_cpu(tx_resp->status);
3137 #ifdef CONFIG_IWL4965_HT
3138         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3139         struct ieee80211_hdr *hdr;
3140         __le16 *qc;
3141 #endif
3142
3143         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3144                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3145                           "is out of range [0-%d] %d %d\n", txq_id,
3146                           index, txq->q.n_bd, txq->q.write_ptr,
3147                           txq->q.read_ptr);
3148                 return;
3149         }
3150
3151 #ifdef CONFIG_IWL4965_HT
3152         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3153         qc = ieee80211_get_qos_ctrl(hdr);
3154
3155         if (qc)
3156                 tid = le16_to_cpu(*qc) & 0xf;
3157
3158         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3159         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3160                 IWL_ERROR("Station not known\n");
3161                 return;
3162         }
3163
3164         if (txq->sched_retry) {
3165                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3166                 struct iwl4965_ht_agg *agg = NULL;
3167
3168                 if (!qc)
3169                         return;
3170
3171                 agg = &priv->stations[sta_id].tid[tid].agg;
3172
3173                 iwl4965_tx_status_reply_tx(priv, agg,
3174                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3175
3176                 if ((tx_resp->frame_count == 1) &&
3177                     !iwl4965_is_tx_success(status)) {
3178                         /* TODO: send BAR */
3179                 }
3180
3181                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3182                         int freed;
3183                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3184                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3185                                            "%d index %d\n", scd_ssn , index);
3186                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3187                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3188
3189                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3190                             txq_id >= 0 && priv->mac80211_registered &&
3191                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3192                                 ieee80211_wake_queue(priv->hw, txq_id);
3193
3194                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3195                 }
3196         } else {
3197 #endif /* CONFIG_IWL4965_HT */
3198         tx_status = &(txq->txb[txq->q.read_ptr].status);
3199
3200         tx_status->retry_count = tx_resp->failure_frame;
3201         tx_status->queue_number = status;
3202         tx_status->queue_length = tx_resp->bt_kill_count;
3203         tx_status->queue_length |= tx_resp->failure_rts;
3204         tx_status->flags =
3205             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3206         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3207                                      &tx_status->control);
3208
3209         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3210                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3211                      status, le32_to_cpu(tx_resp->rate_n_flags),
3212                      tx_resp->failure_frame);
3213
3214         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3215         if (index != -1) {
3216                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3217 #ifdef CONFIG_IWL4965_HT
3218                 if (tid != MAX_TID_COUNT)
3219                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3220                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3221                         (txq_id >= 0) &&
3222                         priv->mac80211_registered)
3223                         ieee80211_wake_queue(priv->hw, txq_id);
3224                 if (tid != MAX_TID_COUNT)
3225                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3226 #endif
3227         }
3228 #ifdef CONFIG_IWL4965_HT
3229         }
3230 #endif /* CONFIG_IWL4965_HT */
3231
3232         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3233                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3234 }
3235
3236
3237 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3238                                struct iwl4965_rx_mem_buffer *rxb)
3239 {
3240         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3241         struct iwl4965_alive_resp *palive;
3242         struct delayed_work *pwork;
3243
3244         palive = &pkt->u.alive_frame;
3245
3246         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3247                        "0x%01X 0x%01X\n",
3248                        palive->is_valid, palive->ver_type,
3249                        palive->ver_subtype);
3250
3251         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3252                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3253                 memcpy(&priv->card_alive_init,
3254                        &pkt->u.alive_frame,
3255                        sizeof(struct iwl4965_init_alive_resp));
3256                 pwork = &priv->init_alive_start;
3257         } else {
3258                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3259                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3260                        sizeof(struct iwl4965_alive_resp));
3261                 pwork = &priv->alive_start;
3262         }
3263
3264         /* We delay the ALIVE response by 5ms to
3265          * give the HW RF Kill time to activate... */
3266         if (palive->is_valid == UCODE_VALID_OK)
3267                 queue_delayed_work(priv->workqueue, pwork,
3268                                    msecs_to_jiffies(5));
3269         else
3270                 IWL_WARNING("uCode did not respond OK.\n");
3271 }
3272
3273 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3274                                  struct iwl4965_rx_mem_buffer *rxb)
3275 {
3276         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3277
3278         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3279         return;
3280 }
3281
3282 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3283                                struct iwl4965_rx_mem_buffer *rxb)
3284 {
3285         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3286
3287         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3288                 "seq 0x%04X ser 0x%08X\n",
3289                 le32_to_cpu(pkt->u.err_resp.error_type),
3290                 get_cmd_string(pkt->u.err_resp.cmd_id),
3291                 pkt->u.err_resp.cmd_id,
3292                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3293                 le32_to_cpu(pkt->u.err_resp.error_info));
3294 }
3295
3296 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3297
3298 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3299 {
3300         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3301         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3302         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3303         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3304                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3305         rxon->channel = csa->channel;
3306         priv->staging_rxon.channel = csa->channel;
3307 }
3308
3309 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3310                                           struct iwl4965_rx_mem_buffer *rxb)
3311 {
3312 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3313         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3314         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3315
3316         if (!report->state) {
3317                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3318                           "Spectrum Measure Notification: Start\n");
3319                 return;
3320         }
3321
3322         memcpy(&priv->measure_report, report, sizeof(*report));
3323         priv->measurement_status |= MEASUREMENT_READY;
3324 #endif
3325 }
3326
3327 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3328                                   struct iwl4965_rx_mem_buffer *rxb)
3329 {
3330 #ifdef CONFIG_IWLWIFI_DEBUG
3331         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3332         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3333         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3334                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3335 #endif
3336 }
3337
3338 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3339                                              struct iwl4965_rx_mem_buffer *rxb)
3340 {
3341         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3342         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3343                         "notification for %s:\n",
3344                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3345         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3346 }
3347
3348 static void iwl4965_bg_beacon_update(struct work_struct *work)
3349 {
3350         struct iwl_priv *priv =
3351                 container_of(work, struct iwl_priv, beacon_update);
3352         struct sk_buff *beacon;
3353
3354         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3355         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3356
3357         if (!beacon) {
3358                 IWL_ERROR("update beacon failed\n");
3359                 return;
3360         }
3361
3362         mutex_lock(&priv->mutex);
3363         /* new beacon skb is allocated every time; dispose previous.*/
3364         if (priv->ibss_beacon)
3365                 dev_kfree_skb(priv->ibss_beacon);
3366
3367         priv->ibss_beacon = beacon;
3368         mutex_unlock(&priv->mutex);
3369
3370         iwl4965_send_beacon_cmd(priv);
3371 }
3372
3373 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3374                                 struct iwl4965_rx_mem_buffer *rxb)
3375 {
3376 #ifdef CONFIG_IWLWIFI_DEBUG
3377         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3378         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3379         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3380
3381         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3382                 "tsf %d %d rate %d\n",
3383                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3384                 beacon->beacon_notify_hdr.failure_frame,
3385                 le32_to_cpu(beacon->ibss_mgr_status),
3386                 le32_to_cpu(beacon->high_tsf),
3387                 le32_to_cpu(beacon->low_tsf), rate);
3388 #endif
3389
3390         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3391             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3392                 queue_work(priv->workqueue, &priv->beacon_update);
3393 }
3394
3395 /* Service response to REPLY_SCAN_CMD (0x80) */
3396 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3397                               struct iwl4965_rx_mem_buffer *rxb)
3398 {
3399 #ifdef CONFIG_IWLWIFI_DEBUG
3400         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3401         struct iwl4965_scanreq_notification *notif =
3402             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3403
3404         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3405 #endif
3406 }
3407
3408 /* Service SCAN_START_NOTIFICATION (0x82) */
3409 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3410                                     struct iwl4965_rx_mem_buffer *rxb)
3411 {
3412         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3413         struct iwl4965_scanstart_notification *notif =
3414             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3415         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3416         IWL_DEBUG_SCAN("Scan start: "
3417                        "%d [802.11%s] "
3418                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3419                        notif->channel,
3420                        notif->band ? "bg" : "a",
3421                        notif->tsf_high,
3422                        notif->tsf_low, notif->status, notif->beacon_timer);
3423 }
3424
3425 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3426 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3427                                       struct iwl4965_rx_mem_buffer *rxb)
3428 {
3429         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3430         struct iwl4965_scanresults_notification *notif =
3431             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3432
3433         IWL_DEBUG_SCAN("Scan ch.res: "
3434                        "%d [802.11%s] "
3435                        "(TSF: 0x%08X:%08X) - %d "
3436                        "elapsed=%lu usec (%dms since last)\n",
3437                        notif->channel,
3438                        notif->band ? "bg" : "a",
3439                        le32_to_cpu(notif->tsf_high),
3440                        le32_to_cpu(notif->tsf_low),
3441                        le32_to_cpu(notif->statistics[0]),
3442                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3443                        jiffies_to_msecs(elapsed_jiffies
3444                                         (priv->last_scan_jiffies, jiffies)));
3445
3446         priv->last_scan_jiffies = jiffies;
3447         priv->next_scan_jiffies = 0;
3448 }
3449
3450 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3451 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3452                                        struct iwl4965_rx_mem_buffer *rxb)
3453 {
3454         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3455         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3456
3457         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3458                        scan_notif->scanned_channels,
3459                        scan_notif->tsf_low,
3460                        scan_notif->tsf_high, scan_notif->status);
3461
3462         /* The HW is no longer scanning */
3463         clear_bit(STATUS_SCAN_HW, &priv->status);
3464
3465         /* The scan completion notification came in, so kill that timer... */
3466         cancel_delayed_work(&priv->scan_check);
3467
3468         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3469                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3470                        jiffies_to_msecs(elapsed_jiffies
3471                                         (priv->scan_pass_start, jiffies)));
3472
3473         /* Remove this scanned band from the list
3474          * of pending bands to scan */
3475         priv->scan_bands--;
3476
3477         /* If a request to abort was given, or the scan did not succeed
3478          * then we reset the scan state machine and terminate,
3479          * re-queuing another scan if one has been requested */
3480         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3481                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3482                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3483         } else {
3484                 /* If there are more bands on this scan pass reschedule */
3485                 if (priv->scan_bands > 0)
3486                         goto reschedule;
3487         }
3488
3489         priv->last_scan_jiffies = jiffies;
3490         priv->next_scan_jiffies = 0;
3491         IWL_DEBUG_INFO("Setting scan to off\n");
3492
3493         clear_bit(STATUS_SCANNING, &priv->status);
3494
3495         IWL_DEBUG_INFO("Scan took %dms\n",
3496                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3497
3498         queue_work(priv->workqueue, &priv->scan_completed);
3499
3500         return;
3501
3502 reschedule:
3503         priv->scan_pass_start = jiffies;
3504         queue_work(priv->workqueue, &priv->request_scan);
3505 }
3506
3507 /* Handle notification from uCode that card's power state is changing
3508  * due to software, hardware, or critical temperature RFKILL */
3509 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3510                                     struct iwl4965_rx_mem_buffer *rxb)
3511 {
3512         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3513         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3514         unsigned long status = priv->status;
3515
3516         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3517                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3518                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3519
3520         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3521                      RF_CARD_DISABLED)) {
3522
3523                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3524                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3525
3526                 if (!iwl_grab_nic_access(priv)) {
3527                         iwl_write_direct32(
3528                                 priv, HBUS_TARG_MBX_C,
3529                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3530
3531                         iwl_release_nic_access(priv);
3532                 }
3533
3534                 if (!(flags & RXON_CARD_DISABLED)) {
3535                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3536                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3537                         if (!iwl_grab_nic_access(priv)) {
3538                                 iwl_write_direct32(
3539                                         priv, HBUS_TARG_MBX_C,
3540                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3541
3542                                 iwl_release_nic_access(priv);
3543                         }
3544                 }
3545
3546                 if (flags & RF_CARD_DISABLED) {
3547                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3548                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3549                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
3550                         if (!iwl_grab_nic_access(priv))
3551                                 iwl_release_nic_access(priv);
3552                 }
3553         }
3554
3555         if (flags & HW_CARD_DISABLED)
3556                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3557         else
3558                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3559
3560
3561         if (flags & SW_CARD_DISABLED)
3562                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3563         else
3564                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3565
3566         if (!(flags & RXON_CARD_DISABLED))
3567                 iwl4965_scan_cancel(priv);
3568
3569         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3570              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3571             (test_bit(STATUS_RF_KILL_SW, &status) !=
3572              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3573                 queue_work(priv->workqueue, &priv->rf_kill);
3574         else
3575                 wake_up_interruptible(&priv->wait_command_queue);
3576 }
3577
3578 /**
3579  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3580  *
3581  * Setup the RX handlers for each of the reply types sent from the uCode
3582  * to the host.
3583  *
3584  * This function chains into the hardware specific files for them to setup
3585  * any hardware specific handlers as well.
3586  */
3587 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3588 {
3589         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3590         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3591         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3592         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3593         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3594             iwl4965_rx_spectrum_measure_notif;
3595         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3596         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3597             iwl4965_rx_pm_debug_statistics_notif;
3598         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3599
3600         /*
3601          * The same handler is used for both the REPLY to a discrete
3602          * statistics request from the host as well as for the periodic
3603          * statistics notifications (after received beacons) from the uCode.
3604          */
3605         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3606         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3607
3608         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3609         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3610         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3611             iwl4965_rx_scan_results_notif;
3612         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3613             iwl4965_rx_scan_complete_notif;
3614         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3615         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3616
3617         /* Set up hardware specific Rx handlers */
3618         iwl4965_hw_rx_handler_setup(priv);
3619 }
3620
3621 /**
3622  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3623  * @rxb: Rx buffer to reclaim
3624  *
3625  * If an Rx buffer has an async callback associated with it the callback
3626  * will be executed.  The attached skb (if present) will only be freed
3627  * if the callback returns 1
3628  */
3629 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3630                                 struct iwl4965_rx_mem_buffer *rxb)
3631 {
3632         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3633         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3634         int txq_id = SEQ_TO_QUEUE(sequence);
3635         int index = SEQ_TO_INDEX(sequence);
3636         int huge = sequence & SEQ_HUGE_FRAME;
3637         int cmd_index;
3638         struct iwl_cmd *cmd;
3639
3640         /* If a Tx command is being handled and it isn't in the actual
3641          * command queue then there a command routing bug has been introduced
3642          * in the queue management code. */
3643         if (txq_id != IWL_CMD_QUEUE_NUM)
3644                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3645                           txq_id, pkt->hdr.cmd);
3646         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3647
3648         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3649         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3650
3651         /* Input error checking is done when commands are added to queue. */
3652         if (cmd->meta.flags & CMD_WANT_SKB) {
3653                 cmd->meta.source->u.skb = rxb->skb;
3654                 rxb->skb = NULL;
3655         } else if (cmd->meta.u.callback &&
3656                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3657                 rxb->skb = NULL;
3658
3659         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3660
3661         if (!(cmd->meta.flags & CMD_ASYNC)) {
3662                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3663                 wake_up_interruptible(&priv->wait_command_queue);
3664         }
3665 }
3666
3667 /************************** RX-FUNCTIONS ****************************/
3668 /*
3669  * Rx theory of operation
3670  *
3671  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3672  * each of which point to Receive Buffers to be filled by 4965.  These get
3673  * used not only for Rx frames, but for any command response or notification
3674  * from the 4965.  The driver and 4965 manage the Rx buffers by means
3675  * of indexes into the circular buffer.
3676  *
3677  * Rx Queue Indexes
3678  * The host/firmware share two index registers for managing the Rx buffers.
3679  *
3680  * The READ index maps to the first position that the firmware may be writing
3681  * to -- the driver can read up to (but not including) this position and get
3682  * good data.
3683  * The READ index is managed by the firmware once the card is enabled.
3684  *
3685  * The WRITE index maps to the last position the driver has read from -- the
3686  * position preceding WRITE is the last slot the firmware can place a packet.
3687  *
3688  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3689  * WRITE = READ.
3690  *
3691  * During initialization, the host sets up the READ queue position to the first
3692  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3693  *
3694  * When the firmware places a packet in a buffer, it will advance the READ index
3695  * and fire the RX interrupt.  The driver can then query the READ index and
3696  * process as many packets as possible, moving the WRITE index forward as it
3697  * resets the Rx queue buffers with new memory.
3698  *
3699  * The management in the driver is as follows:
3700  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3701  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3702  *   to replenish the iwl->rxq->rx_free.
3703  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3704  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3705  *   'processed' and 'read' driver indexes as well)
3706  * + A received packet is processed and handed to the kernel network stack,
3707  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3708  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3709  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3710  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3711  *   were enough free buffers and RX_STALLED is set it is cleared.
3712  *
3713  *
3714  * Driver sequence:
3715  *
3716  * iwl4965_rx_queue_alloc()   Allocates rx_free
3717  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3718  *                            iwl4965_rx_queue_restock
3719  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3720  *                            queue, updates firmware pointers, and updates
3721  *                            the WRITE index.  If insufficient rx_free buffers
3722  *                            are available, schedules iwl4965_rx_replenish
3723  *
3724  * -- enable interrupts --
3725  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
3726  *                            READ INDEX, detaching the SKB from the pool.
3727  *                            Moves the packet buffer from queue to rx_used.
3728  *                            Calls iwl4965_rx_queue_restock to refill any empty
3729  *                            slots.
3730  * ...
3731  *
3732  */
3733
3734 /**
3735  * iwl4965_rx_queue_space - Return number of free slots available in queue.
3736  */
3737 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3738 {
3739         int s = q->read - q->write;
3740         if (s <= 0)
3741                 s += RX_QUEUE_SIZE;
3742         /* keep some buffer to not confuse full and empty queue */
3743         s -= 2;
3744         if (s < 0)
3745                 s = 0;
3746         return s;
3747 }
3748
3749 /**
3750  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3751  */
3752 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3753 {
3754         u32 reg = 0;
3755         int rc = 0;
3756         unsigned long flags;
3757
3758         spin_lock_irqsave(&q->lock, flags);
3759
3760         if (q->need_update == 0)
3761                 goto exit_unlock;
3762
3763         /* If power-saving is in use, make sure device is awake */
3764         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3765                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3766
3767                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3768                         iwl_set_bit(priv, CSR_GP_CNTRL,
3769                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3770                         goto exit_unlock;
3771                 }
3772
3773                 rc = iwl_grab_nic_access(priv);
3774                 if (rc)
3775                         goto exit_unlock;
3776
3777                 /* Device expects a multiple of 8 */
3778                 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3779                                      q->write & ~0x7);
3780                 iwl_release_nic_access(priv);
3781
3782         /* Else device is assumed to be awake */
3783         } else
3784                 /* Device expects a multiple of 8 */
3785                 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3786
3787
3788         q->need_update = 0;
3789
3790  exit_unlock:
3791         spin_unlock_irqrestore(&q->lock, flags);
3792         return rc;
3793 }
3794
3795 /**
3796  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3797  */
3798 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3799                                           dma_addr_t dma_addr)
3800 {
3801         return cpu_to_le32((u32)(dma_addr >> 8));
3802 }
3803
3804
3805 /**
3806  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3807  *
3808  * If there are slots in the RX queue that need to be restocked,
3809  * and we have free pre-allocated buffers, fill the ranks as much
3810  * as we can, pulling from rx_free.
3811  *
3812  * This moves the 'write' index forward to catch up with 'processed', and
3813  * also updates the memory address in the firmware to reference the new
3814  * target buffer.
3815  */
3816 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3817 {
3818         struct iwl4965_rx_queue *rxq = &priv->rxq;
3819         struct list_head *element;
3820         struct iwl4965_rx_mem_buffer *rxb;
3821         unsigned long flags;
3822         int write, rc;
3823
3824         spin_lock_irqsave(&rxq->lock, flags);
3825         write = rxq->write & ~0x7;
3826         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3827                 /* Get next free Rx buffer, remove from free list */
3828                 element = rxq->rx_free.next;
3829                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3830                 list_del(element);
3831
3832                 /* Point to Rx buffer via next RBD in circular buffer */
3833                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3834                 rxq->queue[rxq->write] = rxb;
3835                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3836                 rxq->free_count--;
3837         }
3838         spin_unlock_irqrestore(&rxq->lock, flags);
3839         /* If the pre-allocated buffer pool is dropping low, schedule to
3840          * refill it */
3841         if (rxq->free_count <= RX_LOW_WATERMARK)
3842                 queue_work(priv->workqueue, &priv->rx_replenish);
3843
3844
3845         /* If we've added more space for the firmware to place data, tell it.
3846          * Increment device's write pointer in multiples of 8. */
3847         if ((write != (rxq->write & ~0x7))
3848             || (abs(rxq->write - rxq->read) > 7)) {
3849                 spin_lock_irqsave(&rxq->lock, flags);
3850                 rxq->need_update = 1;
3851                 spin_unlock_irqrestore(&rxq->lock, flags);
3852                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3853                 if (rc)
3854                         return rc;
3855         }
3856
3857         return 0;
3858 }
3859
3860 /**
3861  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3862  *
3863  * When moving to rx_free an SKB is allocated for the slot.
3864  *
3865  * Also restock the Rx queue via iwl4965_rx_queue_restock.
3866  * This is called as a scheduled work item (except for during initialization)
3867  */
3868 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3869 {
3870         struct iwl4965_rx_queue *rxq = &priv->rxq;
3871         struct list_head *element;
3872         struct iwl4965_rx_mem_buffer *rxb;
3873         unsigned long flags;
3874         spin_lock_irqsave(&rxq->lock, flags);
3875         while (!list_empty(&rxq->rx_used)) {
3876                 element = rxq->rx_used.next;
3877                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3878
3879                 /* Alloc a new receive buffer */
3880                 rxb->skb =
3881                     alloc_skb(priv->hw_setting.rx_buf_size,
3882                                 __GFP_NOWARN | GFP_ATOMIC);
3883                 if (!rxb->skb) {
3884                         if (net_ratelimit())
3885                                 printk(KERN_CRIT DRV_NAME
3886                                        ": Can not allocate SKB buffers\n");
3887                         /* We don't reschedule replenish work here -- we will
3888                          * call the restock method and if it still needs
3889                          * more buffers it will schedule replenish */
3890                         break;
3891                 }
3892                 priv->alloc_rxb_skb++;
3893                 list_del(element);
3894
3895                 /* Get physical address of RB/SKB */
3896                 rxb->dma_addr =
3897                     pci_map_single(priv->pci_dev, rxb->skb->data,
3898                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
3899                 list_add_tail(&rxb->list, &rxq->rx_free);
3900                 rxq->free_count++;
3901         }
3902         spin_unlock_irqrestore(&rxq->lock, flags);
3903 }
3904
3905 /*
3906  * this should be called while priv->lock is locked
3907 */
3908 static void __iwl4965_rx_replenish(void *data)
3909 {
3910         struct iwl_priv *priv = data;
3911
3912         iwl4965_rx_allocate(priv);
3913         iwl4965_rx_queue_restock(priv);
3914 }
3915
3916
3917 void iwl4965_rx_replenish(void *data)
3918 {
3919         struct iwl_priv *priv = data;
3920         unsigned long flags;
3921
3922         iwl4965_rx_allocate(priv);
3923
3924         spin_lock_irqsave(&priv->lock, flags);
3925         iwl4965_rx_queue_restock(priv);
3926         spin_unlock_irqrestore(&priv->lock, flags);
3927 }
3928
3929 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3930  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3931  * This free routine walks the list of POOL entries and if SKB is set to
3932  * non NULL it is unmapped and freed
3933  */
3934 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3935 {
3936         int i;
3937         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3938                 if (rxq->pool[i].skb != NULL) {
3939                         pci_unmap_single(priv->pci_dev,
3940                                          rxq->pool[i].dma_addr,
3941                                          priv->hw_setting.rx_buf_size,
3942                                          PCI_DMA_FROMDEVICE);
3943                         dev_kfree_skb(rxq->pool[i].skb);
3944                 }
3945         }
3946
3947         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3948                             rxq->dma_addr);
3949         rxq->bd = NULL;
3950 }
3951
3952 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3953 {
3954         struct iwl4965_rx_queue *rxq = &priv->rxq;
3955         struct pci_dev *dev = priv->pci_dev;
3956         int i;
3957
3958         spin_lock_init(&rxq->lock);
3959         INIT_LIST_HEAD(&rxq->rx_free);
3960         INIT_LIST_HEAD(&rxq->rx_used);
3961
3962         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3963         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3964         if (!rxq->bd)
3965                 return -ENOMEM;
3966
3967         /* Fill the rx_used queue with _all_ of the Rx buffers */
3968         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3969                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3970
3971         /* Set us so that we have processed and used all buffers, but have
3972          * not restocked the Rx queue with fresh buffers */
3973         rxq->read = rxq->write = 0;
3974         rxq->free_count = 0;
3975         rxq->need_update = 0;
3976         return 0;
3977 }
3978
3979 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3980 {
3981         unsigned long flags;
3982         int i;
3983         spin_lock_irqsave(&rxq->lock, flags);
3984         INIT_LIST_HEAD(&rxq->rx_free);
3985         INIT_LIST_HEAD(&rxq->rx_used);
3986         /* Fill the rx_used queue with _all_ of the Rx buffers */
3987         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3988                 /* In the reset function, these buffers may have been allocated
3989                  * to an SKB, so we need to unmap and free potential storage */
3990                 if (rxq->pool[i].skb != NULL) {
3991                         pci_unmap_single(priv->pci_dev,
3992                                          rxq->pool[i].dma_addr,
3993                                          priv->hw_setting.rx_buf_size,
3994                                          PCI_DMA_FROMDEVICE);
3995                         priv->alloc_rxb_skb--;
3996                         dev_kfree_skb(rxq->pool[i].skb);
3997                         rxq->pool[i].skb = NULL;
3998                 }
3999                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4000         }
4001
4002         /* Set us so that we have processed and used all buffers, but have
4003          * not restocked the Rx queue with fresh buffers */
4004         rxq->read = rxq->write = 0;
4005         rxq->free_count = 0;
4006         spin_unlock_irqrestore(&rxq->lock, flags);
4007 }
4008
4009 /* Convert linear signal-to-noise ratio into dB */
4010 static u8 ratio2dB[100] = {
4011 /*       0   1   2   3   4   5   6   7   8   9 */
4012          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4013         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4014         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4015         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4016         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4017         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4018         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4019         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4020         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4021         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4022 };
4023
4024 /* Calculates a relative dB value from a ratio of linear
4025  *   (i.e. not dB) signal levels.
4026  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4027 int iwl4965_calc_db_from_ratio(int sig_ratio)
4028 {
4029         /* 1000:1 or higher just report as 60 dB */
4030         if (sig_ratio >= 1000)
4031                 return 60;
4032
4033         /* 100:1 or higher, divide by 10 and use table,
4034          *   add 20 dB to make up for divide by 10 */
4035         if (sig_ratio >= 100)
4036                 return (20 + (int)ratio2dB[sig_ratio/10]);
4037
4038         /* We shouldn't see this */
4039         if (sig_ratio < 1)
4040                 return 0;
4041
4042         /* Use table for ratios 1:1 - 99:1 */
4043         return (int)ratio2dB[sig_ratio];
4044 }
4045
4046 #define PERFECT_RSSI (-20) /* dBm */
4047 #define WORST_RSSI (-95)   /* dBm */
4048 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4049
4050 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4051  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4052  *   about formulas used below. */
4053 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4054 {
4055         int sig_qual;
4056         int degradation = PERFECT_RSSI - rssi_dbm;
4057
4058         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4059          * as indicator; formula is (signal dbm - noise dbm).
4060          * SNR at or above 40 is a great signal (100%).
4061          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4062          * Weakest usable signal is usually 10 - 15 dB SNR. */
4063         if (noise_dbm) {
4064                 if (rssi_dbm - noise_dbm >= 40)
4065                         return 100;
4066                 else if (rssi_dbm < noise_dbm)
4067                         return 0;
4068                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4069
4070         /* Else use just the signal level.
4071          * This formula is a least squares fit of data points collected and
4072          *   compared with a reference system that had a percentage (%) display
4073          *   for signal quality. */
4074         } else
4075                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4076                             (15 * RSSI_RANGE + 62 * degradation)) /
4077                            (RSSI_RANGE * RSSI_RANGE);
4078
4079         if (sig_qual > 100)
4080                 sig_qual = 100;
4081         else if (sig_qual < 1)
4082                 sig_qual = 0;
4083
4084         return sig_qual;
4085 }
4086
4087 /**
4088  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4089  *
4090  * Uses the priv->rx_handlers callback function array to invoke
4091  * the appropriate handlers, including command responses,
4092  * frame-received notifications, and other notifications.
4093  */
4094 static void iwl4965_rx_handle(struct iwl_priv *priv)
4095 {
4096         struct iwl4965_rx_mem_buffer *rxb;
4097         struct iwl4965_rx_packet *pkt;
4098         struct iwl4965_rx_queue *rxq = &priv->rxq;
4099         u32 r, i;
4100         int reclaim;
4101         unsigned long flags;
4102         u8 fill_rx = 0;
4103         u32 count = 8;
4104
4105         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4106          * buffer that the driver may process (last buffer filled by ucode). */
4107         r = iwl4965_hw_get_rx_read(priv);
4108         i = rxq->read;
4109
4110         /* Rx interrupt, but nothing sent from uCode */
4111         if (i == r)
4112                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4113
4114         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4115                 fill_rx = 1;
4116
4117         while (i != r) {
4118                 rxb = rxq->queue[i];
4119
4120                 /* If an RXB doesn't have a Rx queue slot associated with it,
4121                  * then a bug has been introduced in the queue refilling
4122                  * routines -- catch it here */
4123                 BUG_ON(rxb == NULL);
4124
4125                 rxq->queue[i] = NULL;
4126
4127                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4128                                             priv->hw_setting.rx_buf_size,
4129                                             PCI_DMA_FROMDEVICE);
4130                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4131
4132                 /* Reclaim a command buffer only if this packet is a response
4133                  *   to a (driver-originated) command.
4134                  * If the packet (e.g. Rx frame) originated from uCode,
4135                  *   there is no command buffer to reclaim.
4136                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4137                  *   but apparently a few don't get set; catch them here. */
4138                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4139                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4140                         (pkt->hdr.cmd != REPLY_RX) &&
4141                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4142                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4143                         (pkt->hdr.cmd != REPLY_TX);
4144
4145                 /* Based on type of command response or notification,
4146                  *   handle those that need handling via function in
4147                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4148                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4149                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4150                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4151                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4152                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4153                 } else {
4154                         /* No handling needed */
4155                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4156                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4157                                 r, i, get_cmd_string(pkt->hdr.cmd),
4158                                 pkt->hdr.cmd);
4159                 }
4160
4161                 if (reclaim) {
4162                         /* Invoke any callbacks, transfer the skb to caller, and
4163                          * fire off the (possibly) blocking iwl_send_cmd()
4164                          * as we reclaim the driver command queue */
4165                         if (rxb && rxb->skb)
4166                                 iwl4965_tx_cmd_complete(priv, rxb);
4167                         else
4168                                 IWL_WARNING("Claim null rxb?\n");
4169                 }
4170
4171                 /* For now we just don't re-use anything.  We can tweak this
4172                  * later to try and re-use notification packets and SKBs that
4173                  * fail to Rx correctly */
4174                 if (rxb->skb != NULL) {
4175                         priv->alloc_rxb_skb--;
4176                         dev_kfree_skb_any(rxb->skb);
4177                         rxb->skb = NULL;
4178                 }
4179
4180                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4181                                  priv->hw_setting.rx_buf_size,
4182                                  PCI_DMA_FROMDEVICE);
4183                 spin_lock_irqsave(&rxq->lock, flags);
4184                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4185                 spin_unlock_irqrestore(&rxq->lock, flags);
4186                 i = (i + 1) & RX_QUEUE_MASK;
4187                 /* If there are a lot of unused frames,
4188                  * restock the Rx queue so ucode wont assert. */
4189                 if (fill_rx) {
4190                         count++;
4191                         if (count >= 8) {
4192                                 priv->rxq.read = i;
4193                                 __iwl4965_rx_replenish(priv);
4194                                 count = 0;
4195                         }
4196                 }
4197         }
4198
4199         /* Backtrack one entry */
4200         priv->rxq.read = i;
4201         iwl4965_rx_queue_restock(priv);
4202 }
4203
4204 /**
4205  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4206  */
4207 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4208                                   struct iwl4965_tx_queue *txq)
4209 {
4210         u32 reg = 0;
4211         int rc = 0;
4212         int txq_id = txq->q.id;
4213
4214         if (txq->need_update == 0)
4215                 return rc;
4216
4217         /* if we're trying to save power */
4218         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4219                 /* wake up nic if it's powered down ...
4220                  * uCode will wake up, and interrupt us again, so next
4221                  * time we'll skip this part. */
4222                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4223
4224                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4225                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4226                         iwl_set_bit(priv, CSR_GP_CNTRL,
4227                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4228                         return rc;
4229                 }
4230
4231                 /* restore this queue's parameters in nic hardware. */
4232                 rc = iwl_grab_nic_access(priv);
4233                 if (rc)
4234                         return rc;
4235                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
4236                                      txq->q.write_ptr | (txq_id << 8));
4237                 iwl_release_nic_access(priv);
4238
4239         /* else not in power-save mode, uCode will never sleep when we're
4240          * trying to tx (during RFKILL, we're not trying to tx). */
4241         } else
4242                 iwl_write32(priv, HBUS_TARG_WRPTR,
4243                             txq->q.write_ptr | (txq_id << 8));
4244
4245         txq->need_update = 0;
4246
4247         return rc;
4248 }
4249
4250 #ifdef CONFIG_IWLWIFI_DEBUG
4251 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4252 {
4253         DECLARE_MAC_BUF(mac);
4254
4255         IWL_DEBUG_RADIO("RX CONFIG:\n");
4256         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4257         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4258         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4259         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4260                         le32_to_cpu(rxon->filter_flags));
4261         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4262         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4263                         rxon->ofdm_basic_rates);
4264         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4265         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4266                         print_mac(mac, rxon->node_addr));
4267         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4268                         print_mac(mac, rxon->bssid_addr));
4269         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4270 }
4271 #endif
4272
4273 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4274 {
4275         IWL_DEBUG_ISR("Enabling interrupts\n");
4276         set_bit(STATUS_INT_ENABLED, &priv->status);
4277         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4278 }
4279
4280 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4281 {
4282         clear_bit(STATUS_INT_ENABLED, &priv->status);
4283
4284         /* disable interrupts from uCode/NIC to host */
4285         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4286
4287         /* acknowledge/clear/reset any interrupts still pending
4288          * from uCode or flow handler (Rx/Tx DMA) */
4289         iwl_write32(priv, CSR_INT, 0xffffffff);
4290         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4291         IWL_DEBUG_ISR("Disabled interrupts\n");
4292 }
4293
4294 static const char *desc_lookup(int i)
4295 {
4296         switch (i) {
4297         case 1:
4298                 return "FAIL";
4299         case 2:
4300                 return "BAD_PARAM";
4301         case 3:
4302                 return "BAD_CHECKSUM";
4303         case 4:
4304                 return "NMI_INTERRUPT";
4305         case 5:
4306                 return "SYSASSERT";
4307         case 6:
4308                 return "FATAL_ERROR";
4309         }
4310
4311         return "UNKNOWN";
4312 }
4313
4314 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4315 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4316
4317 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4318 {
4319         u32 data2, line;
4320         u32 desc, time, count, base, data1;
4321         u32 blink1, blink2, ilink1, ilink2;
4322         int rc;
4323
4324         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4325
4326         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4327                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4328                 return;
4329         }
4330
4331         rc = iwl_grab_nic_access(priv);
4332         if (rc) {
4333                 IWL_WARNING("Can not read from adapter at this time.\n");
4334                 return;
4335         }
4336
4337         count = iwl_read_targ_mem(priv, base);
4338
4339         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4340                 IWL_ERROR("Start IWL Error Log Dump:\n");
4341                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4342         }
4343
4344         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
4345         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
4346         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
4347         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
4348         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
4349         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
4350         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
4351         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
4352         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
4353
4354         IWL_ERROR("Desc               Time       "
4355                   "data1      data2      line\n");
4356         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4357                   desc_lookup(desc), desc, time, data1, data2, line);
4358         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4359         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4360                   ilink1, ilink2);
4361
4362         iwl_release_nic_access(priv);
4363 }
4364
4365 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4366
4367 /**
4368  * iwl4965_print_event_log - Dump error event log to syslog
4369  *
4370  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4371  */
4372 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4373                                 u32 num_events, u32 mode)
4374 {
4375         u32 i;
4376         u32 base;       /* SRAM byte address of event log header */
4377         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4378         u32 ptr;        /* SRAM byte address of log data */
4379         u32 ev, time, data; /* event log data */
4380
4381         if (num_events == 0)
4382                 return;
4383
4384         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4385
4386         if (mode == 0)
4387                 event_size = 2 * sizeof(u32);
4388         else
4389                 event_size = 3 * sizeof(u32);
4390
4391         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4392
4393         /* "time" is actually "data" for mode 0 (no timestamp).
4394          * place event id # at far right for easier visual parsing. */
4395         for (i = 0; i < num_events; i++) {
4396                 ev = iwl_read_targ_mem(priv, ptr);
4397                 ptr += sizeof(u32);
4398                 time = iwl_read_targ_mem(priv, ptr);
4399                 ptr += sizeof(u32);
4400                 if (mode == 0)
4401                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4402                 else {
4403                         data = iwl_read_targ_mem(priv, ptr);
4404                         ptr += sizeof(u32);
4405                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4406                 }
4407         }
4408 }
4409
4410 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4411 {
4412         int rc;
4413         u32 base;       /* SRAM byte address of event log header */
4414         u32 capacity;   /* event log capacity in # entries */
4415         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4416         u32 num_wraps;  /* # times uCode wrapped to top of log */
4417         u32 next_entry; /* index of next entry to be written by uCode */
4418         u32 size;       /* # entries that we'll print */
4419
4420         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4421         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4422                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4423                 return;
4424         }
4425
4426         rc = iwl_grab_nic_access(priv);
4427         if (rc) {
4428                 IWL_WARNING("Can not read from adapter at this time.\n");
4429                 return;
4430         }
4431
4432         /* event log header */
4433         capacity = iwl_read_targ_mem(priv, base);
4434         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4435         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4436         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4437
4438         size = num_wraps ? capacity : next_entry;
4439
4440         /* bail out if nothing in log */
4441         if (size == 0) {
4442                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4443                 iwl_release_nic_access(priv);
4444                 return;
4445         }
4446
4447         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4448                   size, num_wraps);
4449
4450         /* if uCode has wrapped back to top of log, start at the oldest entry,
4451          * i.e the next one that uCode would fill. */
4452         if (num_wraps)
4453                 iwl4965_print_event_log(priv, next_entry,
4454                                     capacity - next_entry, mode);
4455
4456         /* (then/else) start at top of log */
4457         iwl4965_print_event_log(priv, 0, next_entry, mode);
4458
4459         iwl_release_nic_access(priv);
4460 }
4461
4462 /**
4463  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4464  */
4465 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4466 {
4467         /* Set the FW error flag -- cleared on iwl4965_down */
4468         set_bit(STATUS_FW_ERROR, &priv->status);
4469
4470         /* Cancel currently queued command. */
4471         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4472
4473 #ifdef CONFIG_IWLWIFI_DEBUG
4474         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4475                 iwl4965_dump_nic_error_log(priv);
4476                 iwl4965_dump_nic_event_log(priv);
4477                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4478         }
4479 #endif
4480
4481         wake_up_interruptible(&priv->wait_command_queue);
4482
4483         /* Keep the restart process from trying to send host
4484          * commands by clearing the INIT status bit */
4485         clear_bit(STATUS_READY, &priv->status);
4486
4487         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4488                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4489                           "Restarting adapter due to uCode error.\n");
4490
4491                 if (iwl4965_is_associated(priv)) {
4492                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4493                                sizeof(priv->recovery_rxon));
4494                         priv->error_recovering = 1;
4495                 }
4496                 queue_work(priv->workqueue, &priv->restart);
4497         }
4498 }
4499
4500 static void iwl4965_error_recovery(struct iwl_priv *priv)
4501 {
4502         unsigned long flags;
4503
4504         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4505                sizeof(priv->staging_rxon));
4506         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4507         iwl4965_commit_rxon(priv);
4508
4509         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4510
4511         spin_lock_irqsave(&priv->lock, flags);
4512         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4513         priv->error_recovering = 0;
4514         spin_unlock_irqrestore(&priv->lock, flags);
4515 }
4516
4517 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4518 {
4519         u32 inta, handled = 0;
4520         u32 inta_fh;
4521         unsigned long flags;
4522 #ifdef CONFIG_IWLWIFI_DEBUG
4523         u32 inta_mask;
4524 #endif
4525
4526         spin_lock_irqsave(&priv->lock, flags);
4527
4528         /* Ack/clear/reset pending uCode interrupts.
4529          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4530          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4531         inta = iwl_read32(priv, CSR_INT);
4532         iwl_write32(priv, CSR_INT, inta);
4533
4534         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4535          * Any new interrupts that happen after this, either while we're
4536          * in this tasklet, or later, will show up in next ISR/tasklet. */
4537         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4538         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4539
4540 #ifdef CONFIG_IWLWIFI_DEBUG
4541         if (iwl_debug_level & IWL_DL_ISR) {
4542                 /* just for debug */
4543                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4544                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4545                               inta, inta_mask, inta_fh);
4546         }
4547 #endif
4548
4549         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4550          * atomic, make sure that inta covers all the interrupts that
4551          * we've discovered, even if FH interrupt came in just after
4552          * reading CSR_INT. */
4553         if (inta_fh & CSR49_FH_INT_RX_MASK)
4554                 inta |= CSR_INT_BIT_FH_RX;
4555         if (inta_fh & CSR49_FH_INT_TX_MASK)
4556                 inta |= CSR_INT_BIT_FH_TX;
4557
4558         /* Now service all interrupt bits discovered above. */
4559         if (inta & CSR_INT_BIT_HW_ERR) {
4560                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4561
4562                 /* Tell the device to stop sending interrupts */
4563                 iwl4965_disable_interrupts(priv);
4564
4565                 iwl4965_irq_handle_error(priv);
4566
4567                 handled |= CSR_INT_BIT_HW_ERR;
4568
4569                 spin_unlock_irqrestore(&priv->lock, flags);
4570
4571                 return;
4572         }
4573
4574 #ifdef CONFIG_IWLWIFI_DEBUG
4575         if (iwl_debug_level & (IWL_DL_ISR)) {
4576                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4577                 if (inta & CSR_INT_BIT_SCD)
4578                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4579                                       "the frame/frames.\n");
4580
4581                 /* Alive notification via Rx interrupt will do the real work */
4582                 if (inta & CSR_INT_BIT_ALIVE)
4583                         IWL_DEBUG_ISR("Alive interrupt\n");
4584         }
4585 #endif
4586         /* Safely ignore these bits for debug checks below */
4587         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4588
4589         /* HW RF KILL switch toggled */
4590         if (inta & CSR_INT_BIT_RF_KILL) {
4591                 int hw_rf_kill = 0;
4592                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4593                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4594                         hw_rf_kill = 1;
4595
4596                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4597                                 "RF_KILL bit toggled to %s.\n",
4598                                 hw_rf_kill ? "disable radio":"enable radio");
4599
4600                 /* Queue restart only if RF_KILL switch was set to "kill"
4601                  *   when we loaded driver, and is now set to "enable".
4602                  * After we're Alive, RF_KILL gets handled by
4603                  *   iwl4965_rx_card_state_notif() */
4604                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4605                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4606                         queue_work(priv->workqueue, &priv->restart);
4607                 }
4608
4609                 handled |= CSR_INT_BIT_RF_KILL;
4610         }
4611
4612         /* Chip got too hot and stopped itself */
4613         if (inta & CSR_INT_BIT_CT_KILL) {
4614                 IWL_ERROR("Microcode CT kill error detected.\n");
4615                 handled |= CSR_INT_BIT_CT_KILL;
4616         }
4617
4618         /* Error detected by uCode */
4619         if (inta & CSR_INT_BIT_SW_ERR) {
4620                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4621                           inta);
4622                 iwl4965_irq_handle_error(priv);
4623                 handled |= CSR_INT_BIT_SW_ERR;
4624         }
4625
4626         /* uCode wakes up after power-down sleep */
4627         if (inta & CSR_INT_BIT_WAKEUP) {
4628                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4629                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4630                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4631                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4632                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4633                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4634                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4635                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4636
4637                 handled |= CSR_INT_BIT_WAKEUP;
4638         }
4639
4640         /* All uCode command responses, including Tx command responses,
4641          * Rx "responses" (frame-received notification), and other
4642          * notifications from uCode come through here*/
4643         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4644                 iwl4965_rx_handle(priv);
4645                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4646         }
4647
4648         if (inta & CSR_INT_BIT_FH_TX) {
4649                 IWL_DEBUG_ISR("Tx interrupt\n");
4650                 handled |= CSR_INT_BIT_FH_TX;
4651         }
4652
4653         if (inta & ~handled)
4654                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4655
4656         if (inta & ~CSR_INI_SET_MASK) {
4657                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4658                          inta & ~CSR_INI_SET_MASK);
4659                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4660         }
4661
4662         /* Re-enable all interrupts */
4663         iwl4965_enable_interrupts(priv);
4664
4665 #ifdef CONFIG_IWLWIFI_DEBUG
4666         if (iwl_debug_level & (IWL_DL_ISR)) {
4667                 inta = iwl_read32(priv, CSR_INT);
4668                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4669                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4670                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4671                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4672         }
4673 #endif
4674         spin_unlock_irqrestore(&priv->lock, flags);
4675 }
4676
4677 static irqreturn_t iwl4965_isr(int irq, void *data)
4678 {
4679         struct iwl_priv *priv = data;
4680         u32 inta, inta_mask;
4681         u32 inta_fh;
4682         if (!priv)
4683                 return IRQ_NONE;
4684
4685         spin_lock(&priv->lock);
4686
4687         /* Disable (but don't clear!) interrupts here to avoid
4688          *    back-to-back ISRs and sporadic interrupts from our NIC.
4689          * If we have something to service, the tasklet will re-enable ints.
4690          * If we *don't* have something, we'll re-enable before leaving here. */
4691         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
4692         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4693
4694         /* Discover which interrupts are active/pending */
4695         inta = iwl_read32(priv, CSR_INT);
4696         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4697
4698         /* Ignore interrupt if there's nothing in NIC to service.
4699          * This may be due to IRQ shared with another device,
4700          * or due to sporadic interrupts thrown from our NIC. */
4701         if (!inta && !inta_fh) {
4702                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4703                 goto none;
4704         }
4705
4706         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4707                 /* Hardware disappeared. It might have already raised
4708                  * an interrupt */
4709                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4710                 goto unplugged;
4711         }
4712
4713         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4714                       inta, inta_mask, inta_fh);
4715
4716         inta &= ~CSR_INT_BIT_SCD;
4717
4718         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4719         if (likely(inta || inta_fh))
4720                 tasklet_schedule(&priv->irq_tasklet);
4721
4722  unplugged:
4723         spin_unlock(&priv->lock);
4724         return IRQ_HANDLED;
4725
4726  none:
4727         /* re-enable interrupts here since we don't have anything to service. */
4728         iwl4965_enable_interrupts(priv);
4729         spin_unlock(&priv->lock);
4730         return IRQ_NONE;
4731 }
4732
4733 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4734  * sending probe req.  This should be set long enough to hear probe responses
4735  * from more than one AP.  */
4736 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4737 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4738
4739 /* For faster active scanning, scan will move to the next channel if fewer than
4740  * PLCP_QUIET_THRESH packets are heard on this channel within
4741  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4742  * time if it's a quiet channel (nothing responded to our probe, and there's
4743  * no other traffic).
4744  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4745 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4746 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4747
4748 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4749  * Must be set longer than active dwell time.
4750  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4751 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4752 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4753 #define IWL_PASSIVE_DWELL_BASE      (100)
4754 #define IWL_CHANNEL_TUNE_TIME       5
4755
4756 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4757                                                 enum ieee80211_band band)
4758 {
4759         if (band == IEEE80211_BAND_5GHZ)
4760                 return IWL_ACTIVE_DWELL_TIME_52;
4761         else
4762                 return IWL_ACTIVE_DWELL_TIME_24;
4763 }
4764
4765 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4766                                           enum ieee80211_band band)
4767 {
4768         u16 active = iwl4965_get_active_dwell_time(priv, band);
4769         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4770             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4771             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4772
4773         if (iwl4965_is_associated(priv)) {
4774                 /* If we're associated, we clamp the maximum passive
4775                  * dwell time to be 98% of the beacon interval (minus
4776                  * 2 * channel tune time) */
4777                 passive = priv->beacon_int;
4778                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4779                         passive = IWL_PASSIVE_DWELL_BASE;
4780                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4781         }
4782
4783         if (passive <= active)
4784                 passive = active + 1;
4785
4786         return passive;
4787 }
4788
4789 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4790                                          enum ieee80211_band band,
4791                                      u8 is_active, u8 direct_mask,
4792                                      struct iwl4965_scan_channel *scan_ch)
4793 {
4794         const struct ieee80211_channel *channels = NULL;
4795         const struct ieee80211_supported_band *sband;
4796         const struct iwl_channel_info *ch_info;
4797         u16 passive_dwell = 0;
4798         u16 active_dwell = 0;
4799         int added, i;
4800
4801         sband = iwl4965_get_hw_mode(priv, band);
4802         if (!sband)
4803                 return 0;
4804
4805         channels = sband->channels;
4806
4807         active_dwell = iwl4965_get_active_dwell_time(priv, band);
4808         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4809
4810         for (i = 0, added = 0; i < sband->n_channels; i++) {
4811                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4812                     le16_to_cpu(priv->active_rxon.channel)) {
4813                         if (iwl4965_is_associated(priv)) {
4814                                 IWL_DEBUG_SCAN
4815                                     ("Skipping current channel %d\n",
4816                                      le16_to_cpu(priv->active_rxon.channel));
4817                                 continue;
4818                         }
4819                 } else if (priv->only_active_channel)
4820                         continue;
4821
4822                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4823
4824                 ch_info = iwl_get_channel_info(priv, band,
4825                                          scan_ch->channel);
4826                 if (!is_channel_valid(ch_info)) {
4827                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4828                                        scan_ch->channel);
4829                         continue;
4830                 }
4831
4832                 if (!is_active || is_channel_passive(ch_info) ||
4833                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4834                         scan_ch->type = 0;      /* passive */
4835                 else
4836                         scan_ch->type = 1;      /* active */
4837
4838                 if (scan_ch->type & 1)
4839                         scan_ch->type |= (direct_mask << 1);
4840
4841                 if (is_channel_narrow(ch_info))
4842                         scan_ch->type |= (1 << 7);
4843
4844                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4845                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4846
4847                 /* Set txpower levels to defaults */
4848                 scan_ch->tpc.dsp_atten = 110;
4849                 /* scan_pwr_info->tpc.dsp_atten; */
4850
4851                 /*scan_pwr_info->tpc.tx_gain; */
4852                 if (band == IEEE80211_BAND_5GHZ)
4853                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4854                 else {
4855                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4856                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4857                          * power level:
4858                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4859                          */
4860                 }
4861
4862                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4863                                scan_ch->channel,
4864                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4865                                (scan_ch->type & 1) ?
4866                                active_dwell : passive_dwell);
4867
4868                 scan_ch++;
4869                 added++;
4870         }
4871
4872         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4873         return added;
4874 }
4875
4876 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4877                               struct ieee80211_rate *rates)
4878 {
4879         int i;
4880
4881         for (i = 0; i < IWL_RATE_COUNT; i++) {
4882                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4883                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4884                 rates[i].hw_value_short = i;
4885                 rates[i].flags = 0;
4886                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4887                         /*
4888                          * If CCK != 1M then set short preamble rate flag.
4889                          */
4890                         rates[i].flags |=
4891                                 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4892                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4893                 }
4894         }
4895 }
4896
4897 /**
4898  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4899  */
4900 int iwl4965_init_geos(struct iwl_priv *priv)
4901 {
4902         struct iwl_channel_info *ch;
4903         struct ieee80211_supported_band *sband;
4904         struct ieee80211_channel *channels;
4905         struct ieee80211_channel *geo_ch;
4906         struct ieee80211_rate *rates;
4907         int i = 0;
4908
4909         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4910             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4911                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4912                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4913                 return 0;
4914         }
4915
4916         channels = kzalloc(sizeof(struct ieee80211_channel) *
4917                            priv->channel_count, GFP_KERNEL);
4918         if (!channels)
4919                 return -ENOMEM;
4920
4921         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4922                         GFP_KERNEL);
4923         if (!rates) {
4924                 kfree(channels);
4925                 return -ENOMEM;
4926         }
4927
4928         /* 5.2GHz channels start after the 2.4GHz channels */
4929         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4930         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4931         /* just OFDM */
4932         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4933         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4934
4935         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4936
4937         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4938         sband->channels = channels;
4939         /* OFDM & CCK */
4940         sband->bitrates = rates;
4941         sband->n_bitrates = IWL_RATE_COUNT;
4942
4943         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4944
4945         priv->ieee_channels = channels;
4946         priv->ieee_rates = rates;
4947
4948         iwl4965_init_hw_rates(priv, rates);
4949
4950         for (i = 0;  i < priv->channel_count; i++) {
4951                 ch = &priv->channel_info[i];
4952
4953                 /* FIXME: might be removed if scan is OK */
4954                 if (!is_channel_valid(ch))
4955                         continue;
4956
4957                 if (is_channel_a_band(ch))
4958                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4959                 else
4960                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4961
4962                 geo_ch = &sband->channels[sband->n_channels++];
4963
4964                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4965                 geo_ch->max_power = ch->max_power_avg;
4966                 geo_ch->max_antenna_gain = 0xff;
4967                 geo_ch->hw_value = ch->channel;
4968
4969                 if (is_channel_valid(ch)) {
4970                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4971                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4972
4973                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4974                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4975
4976                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4977                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4978
4979                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4980                                 priv->max_channel_txpower_limit =
4981                                     ch->max_power_avg;
4982                 } else {
4983                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4984                 }
4985
4986                 /* Save flags for reg domain usage */
4987                 geo_ch->orig_flags = geo_ch->flags;
4988
4989                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4990                                 ch->channel, geo_ch->center_freq,
4991                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4992                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4993                                 "restricted" : "valid",
4994                                  geo_ch->flags);
4995         }
4996
4997         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4998              priv->cfg->sku & IWL_SKU_A) {
4999                 printk(KERN_INFO DRV_NAME
5000                        ": Incorrectly detected BG card as ABG.  Please send "
5001                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5002                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5003                 priv->cfg->sku &= ~IWL_SKU_A;
5004         }
5005
5006         printk(KERN_INFO DRV_NAME
5007                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5008                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5009                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5010
5011         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5012                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5013                         &priv->bands[IEEE80211_BAND_2GHZ];
5014         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5015                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5016                         &priv->bands[IEEE80211_BAND_5GHZ];
5017
5018         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5019
5020         return 0;
5021 }
5022
5023 /*
5024  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5025  */
5026 void iwl4965_free_geos(struct iwl_priv *priv)
5027 {
5028         kfree(priv->ieee_channels);
5029         kfree(priv->ieee_rates);
5030         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5031 }
5032
5033 /******************************************************************************
5034  *
5035  * uCode download functions
5036  *
5037  ******************************************************************************/
5038
5039 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
5040 {
5041         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5042         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5043         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5044         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5045         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5046         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5047 }
5048
5049 /**
5050  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5051  *     looking at all data.
5052  */
5053 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
5054                                  u32 len)
5055 {
5056         u32 val;
5057         u32 save_len = len;
5058         int rc = 0;
5059         u32 errcnt;
5060
5061         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5062
5063         rc = iwl_grab_nic_access(priv);
5064         if (rc)
5065                 return rc;
5066
5067         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5068
5069         errcnt = 0;
5070         for (; len > 0; len -= sizeof(u32), image++) {
5071                 /* read data comes through single port, auto-incr addr */
5072                 /* NOTE: Use the debugless read so we don't flood kernel log
5073                  * if IWL_DL_IO is set */
5074                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5075                 if (val != le32_to_cpu(*image)) {
5076                         IWL_ERROR("uCode INST section is invalid at "
5077                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5078                                   save_len - len, val, le32_to_cpu(*image));
5079                         rc = -EIO;
5080                         errcnt++;
5081                         if (errcnt >= 20)
5082                                 break;
5083                 }
5084         }
5085
5086         iwl_release_nic_access(priv);
5087
5088         if (!errcnt)
5089                 IWL_DEBUG_INFO
5090                     ("ucode image in INSTRUCTION memory is good\n");
5091
5092         return rc;
5093 }
5094
5095
5096 /**
5097  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5098  *   using sample data 100 bytes apart.  If these sample points are good,
5099  *   it's a pretty good bet that everything between them is good, too.
5100  */
5101 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5102 {
5103         u32 val;
5104         int rc = 0;
5105         u32 errcnt = 0;
5106         u32 i;
5107
5108         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5109
5110         rc = iwl_grab_nic_access(priv);
5111         if (rc)
5112                 return rc;
5113
5114         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5115                 /* read data comes through single port, auto-incr addr */
5116                 /* NOTE: Use the debugless read so we don't flood kernel log
5117                  * if IWL_DL_IO is set */
5118                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5119                         i + RTC_INST_LOWER_BOUND);
5120                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5121                 if (val != le32_to_cpu(*image)) {
5122 #if 0 /* Enable this if you want to see details */
5123                         IWL_ERROR("uCode INST section is invalid at "
5124                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5125                                   i, val, *image);
5126 #endif
5127                         rc = -EIO;
5128                         errcnt++;
5129                         if (errcnt >= 3)
5130                                 break;
5131                 }
5132         }
5133
5134         iwl_release_nic_access(priv);
5135
5136         return rc;
5137 }
5138
5139
5140 /**
5141  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5142  *    and verify its contents
5143  */
5144 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5145 {
5146         __le32 *image;
5147         u32 len;
5148         int rc = 0;
5149
5150         /* Try bootstrap */
5151         image = (__le32 *)priv->ucode_boot.v_addr;
5152         len = priv->ucode_boot.len;
5153         rc = iwl4965_verify_inst_sparse(priv, image, len);
5154         if (rc == 0) {
5155                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5156                 return 0;
5157         }
5158
5159         /* Try initialize */
5160         image = (__le32 *)priv->ucode_init.v_addr;
5161         len = priv->ucode_init.len;
5162         rc = iwl4965_verify_inst_sparse(priv, image, len);
5163         if (rc == 0) {
5164                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5165                 return 0;
5166         }
5167
5168         /* Try runtime/protocol */
5169         image = (__le32 *)priv->ucode_code.v_addr;
5170         len = priv->ucode_code.len;
5171         rc = iwl4965_verify_inst_sparse(priv, image, len);
5172         if (rc == 0) {
5173                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5174                 return 0;
5175         }
5176
5177         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5178
5179         /* Since nothing seems to match, show first several data entries in
5180          * instruction SRAM, so maybe visual inspection will give a clue.
5181          * Selection of bootstrap image (vs. other images) is arbitrary. */
5182         image = (__le32 *)priv->ucode_boot.v_addr;
5183         len = priv->ucode_boot.len;
5184         rc = iwl4965_verify_inst_full(priv, image, len);
5185
5186         return rc;
5187 }
5188
5189
5190 /* check contents of special bootstrap uCode SRAM */
5191 static int iwl4965_verify_bsm(struct iwl_priv *priv)
5192 {
5193         __le32 *image = priv->ucode_boot.v_addr;
5194         u32 len = priv->ucode_boot.len;
5195         u32 reg;
5196         u32 val;
5197
5198         IWL_DEBUG_INFO("Begin verify bsm\n");
5199
5200         /* verify BSM SRAM contents */
5201         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
5202         for (reg = BSM_SRAM_LOWER_BOUND;
5203              reg < BSM_SRAM_LOWER_BOUND + len;
5204              reg += sizeof(u32), image ++) {
5205                 val = iwl_read_prph(priv, reg);
5206                 if (val != le32_to_cpu(*image)) {
5207                         IWL_ERROR("BSM uCode verification failed at "
5208                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5209                                   BSM_SRAM_LOWER_BOUND,
5210                                   reg - BSM_SRAM_LOWER_BOUND, len,
5211                                   val, le32_to_cpu(*image));
5212                         return -EIO;
5213                 }
5214         }
5215
5216         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5217
5218         return 0;
5219 }
5220
5221 /**
5222  * iwl4965_load_bsm - Load bootstrap instructions
5223  *
5224  * BSM operation:
5225  *
5226  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5227  * in special SRAM that does not power down during RFKILL.  When powering back
5228  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5229  * the bootstrap program into the on-board processor, and starts it.
5230  *
5231  * The bootstrap program loads (via DMA) instructions and data for a new
5232  * program from host DRAM locations indicated by the host driver in the
5233  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5234  * automatically.
5235  *
5236  * When initializing the NIC, the host driver points the BSM to the
5237  * "initialize" uCode image.  This uCode sets up some internal data, then
5238  * notifies host via "initialize alive" that it is complete.
5239  *
5240  * The host then replaces the BSM_DRAM_* pointer values to point to the
5241  * normal runtime uCode instructions and a backup uCode data cache buffer
5242  * (filled initially with starting data values for the on-board processor),
5243  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5244  * which begins normal operation.
5245  *
5246  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5247  * the backup data cache in DRAM before SRAM is powered down.
5248  *
5249  * When powering back up, the BSM loads the bootstrap program.  This reloads
5250  * the runtime uCode instructions and the backup data cache into SRAM,
5251  * and re-launches the runtime uCode from where it left off.
5252  */
5253 static int iwl4965_load_bsm(struct iwl_priv *priv)
5254 {
5255         __le32 *image = priv->ucode_boot.v_addr;
5256         u32 len = priv->ucode_boot.len;
5257         dma_addr_t pinst;
5258         dma_addr_t pdata;
5259         u32 inst_len;
5260         u32 data_len;
5261         int rc;
5262         int i;
5263         u32 done;
5264         u32 reg_offset;
5265
5266         IWL_DEBUG_INFO("Begin load bsm\n");
5267
5268         /* make sure bootstrap program is no larger than BSM's SRAM size */
5269         if (len > IWL_MAX_BSM_SIZE)
5270                 return -EINVAL;
5271
5272         /* Tell bootstrap uCode where to find the "Initialize" uCode
5273          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5274          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
5275          *        after the "initialize" uCode has run, to point to
5276          *        runtime/protocol instructions and backup data cache. */
5277         pinst = priv->ucode_init.p_addr >> 4;
5278         pdata = priv->ucode_init_data.p_addr >> 4;
5279         inst_len = priv->ucode_init.len;
5280         data_len = priv->ucode_init_data.len;
5281
5282         rc = iwl_grab_nic_access(priv);
5283         if (rc)
5284                 return rc;
5285
5286         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5287         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5288         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5289         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5290
5291         /* Fill BSM memory with bootstrap instructions */
5292         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5293              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5294              reg_offset += sizeof(u32), image++)
5295                 _iwl_write_prph(priv, reg_offset,
5296                                           le32_to_cpu(*image));
5297
5298         rc = iwl4965_verify_bsm(priv);
5299         if (rc) {
5300                 iwl_release_nic_access(priv);
5301                 return rc;
5302         }
5303
5304         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5305         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5306         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
5307                                  RTC_INST_LOWER_BOUND);
5308         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5309
5310         /* Load bootstrap code into instruction SRAM now,
5311          *   to prepare to load "initialize" uCode */
5312         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5313                 BSM_WR_CTRL_REG_BIT_START);
5314
5315         /* Wait for load of bootstrap uCode to finish */
5316         for (i = 0; i < 100; i++) {
5317                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
5318                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5319                         break;
5320                 udelay(10);
5321         }
5322         if (i < 100)
5323                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5324         else {
5325                 IWL_ERROR("BSM write did not complete!\n");
5326                 return -EIO;
5327         }
5328
5329         /* Enable future boot loads whenever power management unit triggers it
5330          *   (e.g. when powering back up after power-save shutdown) */
5331         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5332                 BSM_WR_CTRL_REG_BIT_START_EN);
5333
5334         iwl_release_nic_access(priv);
5335
5336         return 0;
5337 }
5338
5339 static void iwl4965_nic_start(struct iwl_priv *priv)
5340 {
5341         /* Remove all resets to allow NIC to operate */
5342         iwl_write32(priv, CSR_RESET, 0);
5343 }
5344
5345
5346 /**
5347  * iwl4965_read_ucode - Read uCode images from disk file.
5348  *
5349  * Copy into buffers for card to fetch via bus-mastering
5350  */
5351 static int iwl4965_read_ucode(struct iwl_priv *priv)
5352 {
5353         struct iwl4965_ucode *ucode;
5354         int ret;
5355         const struct firmware *ucode_raw;
5356         const char *name = priv->cfg->fw_name;
5357         u8 *src;
5358         size_t len;
5359         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5360
5361         /* Ask kernel firmware_class module to get the boot firmware off disk.
5362          * request_firmware() is synchronous, file is in memory on return. */
5363         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5364         if (ret < 0) {
5365                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5366                                         name, ret);
5367                 goto error;
5368         }
5369
5370         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5371                        name, ucode_raw->size);
5372
5373         /* Make sure that we got at least our header! */
5374         if (ucode_raw->size < sizeof(*ucode)) {
5375                 IWL_ERROR("File size way too small!\n");
5376                 ret = -EINVAL;
5377                 goto err_release;
5378         }
5379
5380         /* Data from ucode file:  header followed by uCode images */
5381         ucode = (void *)ucode_raw->data;
5382
5383         ver = le32_to_cpu(ucode->ver);
5384         inst_size = le32_to_cpu(ucode->inst_size);
5385         data_size = le32_to_cpu(ucode->data_size);
5386         init_size = le32_to_cpu(ucode->init_size);
5387         init_data_size = le32_to_cpu(ucode->init_data_size);
5388         boot_size = le32_to_cpu(ucode->boot_size);
5389
5390         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5391         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5392                        inst_size);
5393         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5394                        data_size);
5395         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5396                        init_size);
5397         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5398                        init_data_size);
5399         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5400                        boot_size);
5401
5402         /* Verify size of file vs. image size info in file's header */
5403         if (ucode_raw->size < sizeof(*ucode) +
5404                 inst_size + data_size + init_size +
5405                 init_data_size + boot_size) {
5406
5407                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5408                                (int)ucode_raw->size);
5409                 ret = -EINVAL;
5410                 goto err_release;
5411         }
5412
5413         /* Verify that uCode images will fit in card's SRAM */
5414         if (inst_size > IWL_MAX_INST_SIZE) {
5415                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5416                                inst_size);
5417                 ret = -EINVAL;
5418                 goto err_release;
5419         }
5420
5421         if (data_size > IWL_MAX_DATA_SIZE) {
5422                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5423                                 data_size);
5424                 ret = -EINVAL;
5425                 goto err_release;
5426         }
5427         if (init_size > IWL_MAX_INST_SIZE) {
5428                 IWL_DEBUG_INFO
5429                     ("uCode init instr len %d too large to fit in\n",
5430                       init_size);
5431                 ret = -EINVAL;
5432                 goto err_release;
5433         }
5434         if (init_data_size > IWL_MAX_DATA_SIZE) {
5435                 IWL_DEBUG_INFO
5436                     ("uCode init data len %d too large to fit in\n",
5437                       init_data_size);
5438                 ret = -EINVAL;
5439                 goto err_release;
5440         }
5441         if (boot_size > IWL_MAX_BSM_SIZE) {
5442                 IWL_DEBUG_INFO
5443                     ("uCode boot instr len %d too large to fit in\n",
5444                       boot_size);
5445                 ret = -EINVAL;
5446                 goto err_release;
5447         }
5448
5449         /* Allocate ucode buffers for card's bus-master loading ... */
5450
5451         /* Runtime instructions and 2 copies of data:
5452          * 1) unmodified from disk
5453          * 2) backup cache for save/restore during power-downs */
5454         priv->ucode_code.len = inst_size;
5455         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5456
5457         priv->ucode_data.len = data_size;
5458         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5459
5460         priv->ucode_data_backup.len = data_size;
5461         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5462
5463         /* Initialization instructions and data */
5464         if (init_size && init_data_size) {
5465                 priv->ucode_init.len = init_size;
5466                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5467
5468                 priv->ucode_init_data.len = init_data_size;
5469                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5470
5471                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5472                         goto err_pci_alloc;
5473         }
5474
5475         /* Bootstrap (instructions only, no data) */
5476         if (boot_size) {
5477                 priv->ucode_boot.len = boot_size;
5478                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5479
5480                 if (!priv->ucode_boot.v_addr)
5481                         goto err_pci_alloc;
5482         }
5483
5484         /* Copy images into buffers for card's bus-master reads ... */
5485
5486         /* Runtime instructions (first block of data in file) */
5487         src = &ucode->data[0];
5488         len = priv->ucode_code.len;
5489         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5490         memcpy(priv->ucode_code.v_addr, src, len);
5491         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5492                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5493
5494         /* Runtime data (2nd block)
5495          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
5496         src = &ucode->data[inst_size];
5497         len = priv->ucode_data.len;
5498         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5499         memcpy(priv->ucode_data.v_addr, src, len);
5500         memcpy(priv->ucode_data_backup.v_addr, src, len);
5501
5502         /* Initialization instructions (3rd block) */
5503         if (init_size) {
5504                 src = &ucode->data[inst_size + data_size];
5505                 len = priv->ucode_init.len;
5506                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5507                                 len);
5508                 memcpy(priv->ucode_init.v_addr, src, len);
5509         }
5510
5511         /* Initialization data (4th block) */
5512         if (init_data_size) {
5513                 src = &ucode->data[inst_size + data_size + init_size];
5514                 len = priv->ucode_init_data.len;
5515                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5516                                len);
5517                 memcpy(priv->ucode_init_data.v_addr, src, len);
5518         }
5519
5520         /* Bootstrap instructions (5th block) */
5521         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5522         len = priv->ucode_boot.len;
5523         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5524         memcpy(priv->ucode_boot.v_addr, src, len);
5525
5526         /* We have our copies now, allow OS release its copies */
5527         release_firmware(ucode_raw);
5528         return 0;
5529
5530  err_pci_alloc:
5531         IWL_ERROR("failed to allocate pci memory\n");
5532         ret = -ENOMEM;
5533         iwl4965_dealloc_ucode_pci(priv);
5534
5535  err_release:
5536         release_firmware(ucode_raw);
5537
5538  error:
5539         return ret;
5540 }
5541
5542
5543 /**
5544  * iwl4965_set_ucode_ptrs - Set uCode address location
5545  *
5546  * Tell initialization uCode where to find runtime uCode.
5547  *
5548  * BSM registers initially contain pointers to initialization uCode.
5549  * We need to replace them to load runtime uCode inst and data,
5550  * and to save runtime data when powering down.
5551  */
5552 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5553 {
5554         dma_addr_t pinst;
5555         dma_addr_t pdata;
5556         int rc = 0;
5557         unsigned long flags;
5558
5559         /* bits 35:4 for 4965 */
5560         pinst = priv->ucode_code.p_addr >> 4;
5561         pdata = priv->ucode_data_backup.p_addr >> 4;
5562
5563         spin_lock_irqsave(&priv->lock, flags);
5564         rc = iwl_grab_nic_access(priv);
5565         if (rc) {
5566                 spin_unlock_irqrestore(&priv->lock, flags);
5567                 return rc;
5568         }
5569
5570         /* Tell bootstrap uCode where to find image to load */
5571         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5572         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5573         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5574                                  priv->ucode_data.len);
5575
5576         /* Inst bytecount must be last to set up, bit 31 signals uCode
5577          *   that all new ptr/size info is in place */
5578         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5579                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5580
5581         iwl_release_nic_access(priv);
5582
5583         spin_unlock_irqrestore(&priv->lock, flags);
5584
5585         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5586
5587         return rc;
5588 }
5589
5590 /**
5591  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5592  *
5593  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5594  *
5595  * The 4965 "initialize" ALIVE reply contains calibration data for:
5596  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
5597  *   (3945 does not contain this data).
5598  *
5599  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5600 */
5601 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5602 {
5603         /* Check alive response for "valid" sign from uCode */
5604         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5605                 /* We had an error bringing up the hardware, so take it
5606                  * all the way back down so we can try again */
5607                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5608                 goto restart;
5609         }
5610
5611         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5612          * This is a paranoid check, because we would not have gotten the
5613          * "initialize" alive if code weren't properly loaded.  */
5614         if (iwl4965_verify_ucode(priv)) {
5615                 /* Runtime instruction load was bad;
5616                  * take it all the way back down so we can try again */
5617                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5618                 goto restart;
5619         }
5620
5621         /* Calculate temperature */
5622         priv->temperature = iwl4965_get_temperature(priv);
5623
5624         /* Send pointers to protocol/runtime uCode image ... init code will
5625          * load and launch runtime uCode, which will send us another "Alive"
5626          * notification. */
5627         IWL_DEBUG_INFO("Initialization Alive received.\n");
5628         if (iwl4965_set_ucode_ptrs(priv)) {
5629                 /* Runtime instruction load won't happen;
5630                  * take it all the way back down so we can try again */
5631                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5632                 goto restart;
5633         }
5634         return;
5635
5636  restart:
5637         queue_work(priv->workqueue, &priv->restart);
5638 }
5639
5640
5641 /**
5642  * iwl4965_alive_start - called after REPLY_ALIVE notification received
5643  *                   from protocol/runtime uCode (initialization uCode's
5644  *                   Alive gets handled by iwl4965_init_alive_start()).
5645  */
5646 static void iwl4965_alive_start(struct iwl_priv *priv)
5647 {
5648         int rc = 0;
5649
5650         IWL_DEBUG_INFO("Runtime Alive received.\n");
5651
5652         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5653                 /* We had an error bringing up the hardware, so take it
5654                  * all the way back down so we can try again */
5655                 IWL_DEBUG_INFO("Alive failed.\n");
5656                 goto restart;
5657         }
5658
5659         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5660          * This is a paranoid check, because we would not have gotten the
5661          * "runtime" alive if code weren't properly loaded.  */
5662         if (iwl4965_verify_ucode(priv)) {
5663                 /* Runtime instruction load was bad;
5664                  * take it all the way back down so we can try again */
5665                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5666                 goto restart;
5667         }
5668
5669         iwlcore_clear_stations_table(priv);
5670
5671         rc = iwl4965_alive_notify(priv);
5672         if (rc) {
5673                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5674                             rc);
5675                 goto restart;
5676         }
5677
5678         /* After the ALIVE response, we can send host commands to 4965 uCode */
5679         set_bit(STATUS_ALIVE, &priv->status);
5680
5681         /* Clear out the uCode error bit if it is set */
5682         clear_bit(STATUS_FW_ERROR, &priv->status);
5683
5684         if (iwl4965_is_rfkill(priv))
5685                 return;
5686
5687         ieee80211_start_queues(priv->hw);
5688
5689         priv->active_rate = priv->rates_mask;
5690         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5691
5692         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5693
5694         if (iwl4965_is_associated(priv)) {
5695                 struct iwl4965_rxon_cmd *active_rxon =
5696                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5697
5698                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5699                        sizeof(priv->staging_rxon));
5700                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5701         } else {
5702                 /* Initialize our rx_config data */
5703                 iwl4965_connection_init_rx_config(priv);
5704                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5705         }
5706
5707         /* Configure Bluetooth device coexistence support */
5708         iwl4965_send_bt_config(priv);
5709
5710         /* Configure the adapter for unassociated operation */
5711         iwl4965_commit_rxon(priv);
5712
5713         /* At this point, the NIC is initialized and operational */
5714         priv->notif_missed_beacons = 0;
5715
5716         iwl4965_rf_kill_ct_config(priv);
5717
5718         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5719         set_bit(STATUS_READY, &priv->status);
5720         wake_up_interruptible(&priv->wait_command_queue);
5721
5722         iwl_leds_register(priv);
5723
5724         if (priv->error_recovering)
5725                 iwl4965_error_recovery(priv);
5726
5727         return;
5728
5729  restart:
5730         queue_work(priv->workqueue, &priv->restart);
5731 }
5732
5733 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5734
5735 static void __iwl4965_down(struct iwl_priv *priv)
5736 {
5737         unsigned long flags;
5738         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5739         struct ieee80211_conf *conf = NULL;
5740
5741         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5742
5743         conf = ieee80211_get_hw_conf(priv->hw);
5744
5745         if (!exit_pending)
5746                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5747
5748         iwl_leds_unregister(priv);
5749
5750         iwlcore_clear_stations_table(priv);
5751
5752         /* Unblock any waiting calls */
5753         wake_up_interruptible_all(&priv->wait_command_queue);
5754
5755         /* Wipe out the EXIT_PENDING status bit if we are not actually
5756          * exiting the module */
5757         if (!exit_pending)
5758                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5759
5760         /* stop and reset the on-board processor */
5761         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5762
5763         /* tell the device to stop sending interrupts */
5764         iwl4965_disable_interrupts(priv);
5765
5766         if (priv->mac80211_registered)
5767                 ieee80211_stop_queues(priv->hw);
5768
5769         /* If we have not previously called iwl4965_init() then
5770          * clear all bits but the RF Kill and SUSPEND bits and return */
5771         if (!iwl4965_is_init(priv)) {
5772                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5773                                         STATUS_RF_KILL_HW |
5774                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5775                                         STATUS_RF_KILL_SW |
5776                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5777                                         STATUS_GEO_CONFIGURED |
5778                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5779                                         STATUS_IN_SUSPEND;
5780                 goto exit;
5781         }
5782
5783         /* ...otherwise clear out all the status bits but the RF Kill and
5784          * SUSPEND bits and continue taking the NIC down. */
5785         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5786                                 STATUS_RF_KILL_HW |
5787                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5788                                 STATUS_RF_KILL_SW |
5789                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5790                                 STATUS_GEO_CONFIGURED |
5791                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5792                                 STATUS_IN_SUSPEND |
5793                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5794                                 STATUS_FW_ERROR;
5795
5796         spin_lock_irqsave(&priv->lock, flags);
5797         iwl_clear_bit(priv, CSR_GP_CNTRL,
5798                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5799         spin_unlock_irqrestore(&priv->lock, flags);
5800
5801         iwl4965_hw_txq_ctx_stop(priv);
5802         iwl4965_hw_rxq_stop(priv);
5803
5804         spin_lock_irqsave(&priv->lock, flags);
5805         if (!iwl_grab_nic_access(priv)) {
5806                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5807                                          APMG_CLK_VAL_DMA_CLK_RQT);
5808                 iwl_release_nic_access(priv);
5809         }
5810         spin_unlock_irqrestore(&priv->lock, flags);
5811
5812         udelay(5);
5813
5814         iwl4965_hw_nic_stop_master(priv);
5815         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5816         iwl4965_hw_nic_reset(priv);
5817
5818  exit:
5819         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5820
5821         if (priv->ibss_beacon)
5822                 dev_kfree_skb(priv->ibss_beacon);
5823         priv->ibss_beacon = NULL;
5824
5825         /* clear out any free frames */
5826         iwl4965_clear_free_frames(priv);
5827 }
5828
5829 static void iwl4965_down(struct iwl_priv *priv)
5830 {
5831         mutex_lock(&priv->mutex);
5832         __iwl4965_down(priv);
5833         mutex_unlock(&priv->mutex);
5834
5835         iwl4965_cancel_deferred_work(priv);
5836 }
5837
5838 #define MAX_HW_RESTARTS 5
5839
5840 static int __iwl4965_up(struct iwl_priv *priv)
5841 {
5842         int rc, i;
5843
5844         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5845                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5846                 return -EIO;
5847         }
5848
5849         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5850                 IWL_WARNING("Radio disabled by SW RF kill (module "
5851                             "parameter)\n");
5852                 return -ENODEV;
5853         }
5854
5855         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5856                 IWL_ERROR("ucode not available for device bringup\n");
5857                 return -EIO;
5858         }
5859
5860         /* If platform's RF_KILL switch is NOT set to KILL */
5861         if (iwl_read32(priv, CSR_GP_CNTRL) &
5862                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5863                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5864         else {
5865                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5866                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5867                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5868                         return -ENODEV;
5869                 }
5870         }
5871
5872         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5873
5874         rc = iwl4965_hw_nic_init(priv);
5875         if (rc) {
5876                 IWL_ERROR("Unable to int nic\n");
5877                 return rc;
5878         }
5879
5880         /* make sure rfkill handshake bits are cleared */
5881         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5882         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5883                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5884
5885         /* clear (again), then enable host interrupts */
5886         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5887         iwl4965_enable_interrupts(priv);
5888
5889         /* really make sure rfkill handshake bits are cleared */
5890         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5891         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5892
5893         /* Copy original ucode data image from disk into backup cache.
5894          * This will be used to initialize the on-board processor's
5895          * data SRAM for a clean start when the runtime program first loads. */
5896         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5897                priv->ucode_data.len);
5898
5899         /* We return success when we resume from suspend and rf_kill is on. */
5900         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5901                 return 0;
5902
5903         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5904
5905                 iwlcore_clear_stations_table(priv);
5906
5907                 /* load bootstrap state machine,
5908                  * load bootstrap program into processor's memory,
5909                  * prepare to load the "initialize" uCode */
5910                 rc = iwl4965_load_bsm(priv);
5911
5912                 if (rc) {
5913                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5914                         continue;
5915                 }
5916
5917                 /* start card; "initialize" will load runtime ucode */
5918                 iwl4965_nic_start(priv);
5919
5920                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5921
5922                 return 0;
5923         }
5924
5925         set_bit(STATUS_EXIT_PENDING, &priv->status);
5926         __iwl4965_down(priv);
5927
5928         /* tried to restart and config the device for as long as our
5929          * patience could withstand */
5930         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5931         return -EIO;
5932 }
5933
5934
5935 /*****************************************************************************
5936  *
5937  * Workqueue callbacks
5938  *
5939  *****************************************************************************/
5940
5941 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5942 {
5943         struct iwl_priv *priv =
5944             container_of(data, struct iwl_priv, init_alive_start.work);
5945
5946         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5947                 return;
5948
5949         mutex_lock(&priv->mutex);
5950         iwl4965_init_alive_start(priv);
5951         mutex_unlock(&priv->mutex);
5952 }
5953
5954 static void iwl4965_bg_alive_start(struct work_struct *data)
5955 {
5956         struct iwl_priv *priv =
5957             container_of(data, struct iwl_priv, alive_start.work);
5958
5959         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5960                 return;
5961
5962         mutex_lock(&priv->mutex);
5963         iwl4965_alive_start(priv);
5964         mutex_unlock(&priv->mutex);
5965 }
5966
5967 static void iwl4965_bg_rf_kill(struct work_struct *work)
5968 {
5969         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5970
5971         wake_up_interruptible(&priv->wait_command_queue);
5972
5973         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5974                 return;
5975
5976         mutex_lock(&priv->mutex);
5977
5978         if (!iwl4965_is_rfkill(priv)) {
5979                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5980                           "HW and/or SW RF Kill no longer active, restarting "
5981                           "device\n");
5982                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5983                         queue_work(priv->workqueue, &priv->restart);
5984         } else {
5985
5986                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5987                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5988                                           "disabled by SW switch\n");
5989                 else
5990                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5991                                     "Kill switch must be turned off for "
5992                                     "wireless networking to work.\n");
5993         }
5994         mutex_unlock(&priv->mutex);
5995 }
5996
5997 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5998
5999 static void iwl4965_bg_scan_check(struct work_struct *data)
6000 {
6001         struct iwl_priv *priv =
6002             container_of(data, struct iwl_priv, scan_check.work);
6003
6004         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6005                 return;
6006
6007         mutex_lock(&priv->mutex);
6008         if (test_bit(STATUS_SCANNING, &priv->status) ||
6009             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6010                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6011                           "Scan completion watchdog resetting adapter (%dms)\n",
6012                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6013
6014                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6015                         iwl4965_send_scan_abort(priv);
6016         }
6017         mutex_unlock(&priv->mutex);
6018 }
6019
6020 static void iwl4965_bg_request_scan(struct work_struct *data)
6021 {
6022         struct iwl_priv *priv =
6023             container_of(data, struct iwl_priv, request_scan);
6024         struct iwl_host_cmd cmd = {
6025                 .id = REPLY_SCAN_CMD,
6026                 .len = sizeof(struct iwl4965_scan_cmd),
6027                 .meta.flags = CMD_SIZE_HUGE,
6028         };
6029         struct iwl4965_scan_cmd *scan;
6030         struct ieee80211_conf *conf = NULL;
6031         u16 cmd_len;
6032         enum ieee80211_band band;
6033         u8 direct_mask;
6034         int ret = 0;
6035
6036         conf = ieee80211_get_hw_conf(priv->hw);
6037
6038         mutex_lock(&priv->mutex);
6039
6040         if (!iwl4965_is_ready(priv)) {
6041                 IWL_WARNING("request scan called when driver not ready.\n");
6042                 goto done;
6043         }
6044
6045         /* Make sure the scan wasn't cancelled before this queued work
6046          * was given the chance to run... */
6047         if (!test_bit(STATUS_SCANNING, &priv->status))
6048                 goto done;
6049
6050         /* This should never be called or scheduled if there is currently
6051          * a scan active in the hardware. */
6052         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6053                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6054                                "Ignoring second request.\n");
6055                 ret = -EIO;
6056                 goto done;
6057         }
6058
6059         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6060                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6061                 goto done;
6062         }
6063
6064         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6065                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6066                 goto done;
6067         }
6068
6069         if (iwl4965_is_rfkill(priv)) {
6070                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6071                 goto done;
6072         }
6073
6074         if (!test_bit(STATUS_READY, &priv->status)) {
6075                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6076                 goto done;
6077         }
6078
6079         if (!priv->scan_bands) {
6080                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6081                 goto done;
6082         }
6083
6084         if (!priv->scan) {
6085                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6086                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6087                 if (!priv->scan) {
6088                         ret = -ENOMEM;
6089                         goto done;
6090                 }
6091         }
6092         scan = priv->scan;
6093         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6094
6095         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6096         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6097
6098         if (iwl4965_is_associated(priv)) {
6099                 u16 interval = 0;
6100                 u32 extra;
6101                 u32 suspend_time = 100;
6102                 u32 scan_suspend_time = 100;
6103                 unsigned long flags;
6104
6105                 IWL_DEBUG_INFO("Scanning while associated...\n");
6106
6107                 spin_lock_irqsave(&priv->lock, flags);
6108                 interval = priv->beacon_int;
6109                 spin_unlock_irqrestore(&priv->lock, flags);
6110
6111                 scan->suspend_time = 0;
6112                 scan->max_out_time = cpu_to_le32(200 * 1024);
6113                 if (!interval)
6114                         interval = suspend_time;
6115
6116                 extra = (suspend_time / interval) << 22;
6117                 scan_suspend_time = (extra |
6118                     ((suspend_time % interval) * 1024));
6119                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6120                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6121                                scan_suspend_time, interval);
6122         }
6123
6124         /* We should add the ability for user to lock to PASSIVE ONLY */
6125         if (priv->one_direct_scan) {
6126                 IWL_DEBUG_SCAN
6127                     ("Kicking off one direct scan for '%s'\n",
6128                      iwl4965_escape_essid(priv->direct_ssid,
6129                                       priv->direct_ssid_len));
6130                 scan->direct_scan[0].id = WLAN_EID_SSID;
6131                 scan->direct_scan[0].len = priv->direct_ssid_len;
6132                 memcpy(scan->direct_scan[0].ssid,
6133                        priv->direct_ssid, priv->direct_ssid_len);
6134                 direct_mask = 1;
6135         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6136                 scan->direct_scan[0].id = WLAN_EID_SSID;
6137                 scan->direct_scan[0].len = priv->essid_len;
6138                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6139                 direct_mask = 1;
6140         } else {
6141                 direct_mask = 0;
6142         }
6143
6144         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6145         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6146         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6147
6148
6149         switch (priv->scan_bands) {
6150         case 2:
6151                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6152                 scan->tx_cmd.rate_n_flags =
6153                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6154                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6155
6156                 scan->good_CRC_th = 0;
6157                 band = IEEE80211_BAND_2GHZ;
6158                 break;
6159
6160         case 1:
6161                 scan->tx_cmd.rate_n_flags =
6162                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6163                                 RATE_MCS_ANT_B_MSK);
6164                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6165                 band = IEEE80211_BAND_5GHZ;
6166                 break;
6167
6168         default:
6169                 IWL_WARNING("Invalid scan band count\n");
6170                 goto done;
6171         }
6172
6173         /* We don't build a direct scan probe request; the uCode will do
6174          * that based on the direct_mask added to each channel entry */
6175         cmd_len = iwl4965_fill_probe_req(priv, band,
6176                                         (struct ieee80211_mgmt *)scan->data,
6177                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6178
6179         scan->tx_cmd.len = cpu_to_le16(cmd_len);
6180         /* select Rx chains */
6181
6182         /* Force use of chains B and C (0x6) for scan Rx.
6183          * Avoid A (0x1) because of its off-channel reception on A-band.
6184          * MIMO is not used here, but value is required to make uCode happy. */
6185         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6186                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6187                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6188                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6189
6190         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6191                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6192
6193         if (direct_mask) {
6194                 IWL_DEBUG_SCAN
6195                     ("Initiating direct scan for %s.\n",
6196                      iwl4965_escape_essid(priv->essid, priv->essid_len));
6197                 scan->channel_count =
6198                         iwl4965_get_channels_for_scan(
6199                                 priv, band, 1, /* active */
6200                                 direct_mask,
6201                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6202         } else {
6203                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6204                 scan->channel_count =
6205                         iwl4965_get_channels_for_scan(
6206                                 priv, band, 0, /* passive */
6207                                 direct_mask,
6208                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6209         }
6210
6211         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6212             scan->channel_count * sizeof(struct iwl4965_scan_channel);
6213         cmd.data = scan;
6214         scan->len = cpu_to_le16(cmd.len);
6215
6216         set_bit(STATUS_SCAN_HW, &priv->status);
6217         ret = iwl_send_cmd_sync(priv, &cmd);
6218         if (ret)
6219                 goto done;
6220
6221         queue_delayed_work(priv->workqueue, &priv->scan_check,
6222                            IWL_SCAN_CHECK_WATCHDOG);
6223
6224         mutex_unlock(&priv->mutex);
6225         return;
6226
6227  done:
6228         /* inform mac80211 scan aborted */
6229         queue_work(priv->workqueue, &priv->scan_completed);
6230         mutex_unlock(&priv->mutex);
6231 }
6232
6233 static void iwl4965_bg_up(struct work_struct *data)
6234 {
6235         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6236
6237         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6238                 return;
6239
6240         mutex_lock(&priv->mutex);
6241         __iwl4965_up(priv);
6242         mutex_unlock(&priv->mutex);
6243 }
6244
6245 static void iwl4965_bg_restart(struct work_struct *data)
6246 {
6247         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6248
6249         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6250                 return;
6251
6252         iwl4965_down(priv);
6253         queue_work(priv->workqueue, &priv->up);
6254 }
6255
6256 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6257 {
6258         struct iwl_priv *priv =
6259             container_of(data, struct iwl_priv, rx_replenish);
6260
6261         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6262                 return;
6263
6264         mutex_lock(&priv->mutex);
6265         iwl4965_rx_replenish(priv);
6266         mutex_unlock(&priv->mutex);
6267 }
6268
6269 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6270
6271 static void iwl4965_bg_post_associate(struct work_struct *data)
6272 {
6273         struct iwl_priv *priv = container_of(data, struct iwl_priv,
6274                                              post_associate.work);
6275         struct ieee80211_conf *conf = NULL;
6276         int ret = 0;
6277         DECLARE_MAC_BUF(mac);
6278
6279         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6280                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6281                 return;
6282         }
6283
6284         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6285                         priv->assoc_id,
6286                         print_mac(mac, priv->active_rxon.bssid_addr));
6287
6288
6289         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6290                 return;
6291
6292         mutex_lock(&priv->mutex);
6293
6294         if (!priv->vif || !priv->is_open) {
6295                 mutex_unlock(&priv->mutex);
6296                 return;
6297         }
6298         iwl4965_scan_cancel_timeout(priv, 200);
6299
6300         conf = ieee80211_get_hw_conf(priv->hw);
6301
6302         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6303         iwl4965_commit_rxon(priv);
6304
6305         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6306         iwl4965_setup_rxon_timing(priv);
6307         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6308                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6309         if (ret)
6310                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6311                             "Attempting to continue.\n");
6312
6313         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6314
6315 #ifdef CONFIG_IWL4965_HT
6316         if (priv->current_ht_config.is_ht)
6317                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6318 #endif /* CONFIG_IWL4965_HT*/
6319         iwl4965_set_rxon_chain(priv);
6320         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6321
6322         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6323                         priv->assoc_id, priv->beacon_int);
6324
6325         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6326                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6327         else
6328                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6329
6330         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6331                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6332                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6333                 else
6334                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6335
6336                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6337                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6338
6339         }
6340
6341         iwl4965_commit_rxon(priv);
6342
6343         switch (priv->iw_mode) {
6344         case IEEE80211_IF_TYPE_STA:
6345                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6346                 break;
6347
6348         case IEEE80211_IF_TYPE_IBSS:
6349
6350                 /* clear out the station table */
6351                 iwlcore_clear_stations_table(priv);
6352
6353                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6354                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6355                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6356                 iwl4965_send_beacon_cmd(priv);
6357
6358                 break;
6359
6360         default:
6361                 IWL_ERROR("%s Should not be called in %d mode\n",
6362                                 __FUNCTION__, priv->iw_mode);
6363                 break;
6364         }
6365
6366         iwl4965_sequence_reset(priv);
6367
6368 #ifdef CONFIG_IWL4965_SENSITIVITY
6369         /* Enable Rx differential gain and sensitivity calibrations */
6370         iwl4965_chain_noise_reset(priv);
6371         priv->start_calib = 1;
6372 #endif /* CONFIG_IWL4965_SENSITIVITY */
6373
6374         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6375                 priv->assoc_station_added = 1;
6376
6377         iwl4965_activate_qos(priv, 0);
6378
6379         /* we have just associated, don't start scan too early */
6380         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6381         mutex_unlock(&priv->mutex);
6382 }
6383
6384 static void iwl4965_bg_abort_scan(struct work_struct *work)
6385 {
6386         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6387
6388         if (!iwl4965_is_ready(priv))
6389                 return;
6390
6391         mutex_lock(&priv->mutex);
6392
6393         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6394         iwl4965_send_scan_abort(priv);
6395
6396         mutex_unlock(&priv->mutex);
6397 }
6398
6399 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6400
6401 static void iwl4965_bg_scan_completed(struct work_struct *work)
6402 {
6403         struct iwl_priv *priv =
6404             container_of(work, struct iwl_priv, scan_completed);
6405
6406         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6407
6408         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6409                 return;
6410
6411         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6412                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6413
6414         ieee80211_scan_completed(priv->hw);
6415
6416         /* Since setting the TXPOWER may have been deferred while
6417          * performing the scan, fire one off */
6418         mutex_lock(&priv->mutex);
6419         iwl4965_hw_reg_send_txpower(priv);
6420         mutex_unlock(&priv->mutex);
6421 }
6422
6423 /*****************************************************************************
6424  *
6425  * mac80211 entry point functions
6426  *
6427  *****************************************************************************/
6428
6429 #define UCODE_READY_TIMEOUT     (2 * HZ)
6430
6431 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6432 {
6433         struct iwl_priv *priv = hw->priv;
6434         int ret;
6435
6436         IWL_DEBUG_MAC80211("enter\n");
6437
6438         if (pci_enable_device(priv->pci_dev)) {
6439                 IWL_ERROR("Fail to pci_enable_device\n");
6440                 return -ENODEV;
6441         }
6442         pci_restore_state(priv->pci_dev);
6443         pci_enable_msi(priv->pci_dev);
6444
6445         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6446                           DRV_NAME, priv);
6447         if (ret) {
6448                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6449                 goto out_disable_msi;
6450         }
6451
6452         /* we should be verifying the device is ready to be opened */
6453         mutex_lock(&priv->mutex);
6454
6455         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6456         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6457          * ucode filename and max sizes are card-specific. */
6458
6459         if (!priv->ucode_code.len) {
6460                 ret = iwl4965_read_ucode(priv);
6461                 if (ret) {
6462                         IWL_ERROR("Could not read microcode: %d\n", ret);
6463                         mutex_unlock(&priv->mutex);
6464                         goto out_release_irq;
6465                 }
6466         }
6467
6468         ret = __iwl4965_up(priv);
6469
6470         mutex_unlock(&priv->mutex);
6471
6472         if (ret)
6473                 goto out_release_irq;
6474
6475         IWL_DEBUG_INFO("Start UP work done.\n");
6476
6477         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6478                 return 0;
6479
6480         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6481          * mac80211 will not be run successfully. */
6482         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6483                         test_bit(STATUS_READY, &priv->status),
6484                         UCODE_READY_TIMEOUT);
6485         if (!ret) {
6486                 if (!test_bit(STATUS_READY, &priv->status)) {
6487                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6488                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6489                         ret = -ETIMEDOUT;
6490                         goto out_release_irq;
6491                 }
6492         }
6493
6494         priv->is_open = 1;
6495         IWL_DEBUG_MAC80211("leave\n");
6496         return 0;
6497
6498 out_release_irq:
6499         free_irq(priv->pci_dev->irq, priv);
6500 out_disable_msi:
6501         pci_disable_msi(priv->pci_dev);
6502         pci_disable_device(priv->pci_dev);
6503         priv->is_open = 0;
6504         IWL_DEBUG_MAC80211("leave - failed\n");
6505         return ret;
6506 }
6507
6508 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6509 {
6510         struct iwl_priv *priv = hw->priv;
6511
6512         IWL_DEBUG_MAC80211("enter\n");
6513
6514         if (!priv->is_open) {
6515                 IWL_DEBUG_MAC80211("leave - skip\n");
6516                 return;
6517         }
6518
6519         priv->is_open = 0;
6520
6521         if (iwl4965_is_ready_rf(priv)) {
6522                 /* stop mac, cancel any scan request and clear
6523                  * RXON_FILTER_ASSOC_MSK BIT
6524                  */
6525                 mutex_lock(&priv->mutex);
6526                 iwl4965_scan_cancel_timeout(priv, 100);
6527                 cancel_delayed_work(&priv->post_associate);
6528                 mutex_unlock(&priv->mutex);
6529         }
6530
6531         iwl4965_down(priv);
6532
6533         flush_workqueue(priv->workqueue);
6534         free_irq(priv->pci_dev->irq, priv);
6535         pci_disable_msi(priv->pci_dev);
6536         pci_save_state(priv->pci_dev);
6537         pci_disable_device(priv->pci_dev);
6538
6539         IWL_DEBUG_MAC80211("leave\n");
6540 }
6541
6542 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6543                       struct ieee80211_tx_control *ctl)
6544 {
6545         struct iwl_priv *priv = hw->priv;
6546
6547         IWL_DEBUG_MAC80211("enter\n");
6548
6549         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6550                 IWL_DEBUG_MAC80211("leave - monitor\n");
6551                 return -1;
6552         }
6553
6554         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6555                      ctl->tx_rate->bitrate);
6556
6557         if (iwl4965_tx_skb(priv, skb, ctl))
6558                 dev_kfree_skb_any(skb);
6559
6560         IWL_DEBUG_MAC80211("leave\n");
6561         return 0;
6562 }
6563
6564 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6565                                  struct ieee80211_if_init_conf *conf)
6566 {
6567         struct iwl_priv *priv = hw->priv;
6568         unsigned long flags;
6569         DECLARE_MAC_BUF(mac);
6570
6571         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6572
6573         if (priv->vif) {
6574                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6575                 return -EOPNOTSUPP;
6576         }
6577
6578         spin_lock_irqsave(&priv->lock, flags);
6579         priv->vif = conf->vif;
6580
6581         spin_unlock_irqrestore(&priv->lock, flags);
6582
6583         mutex_lock(&priv->mutex);
6584
6585         if (conf->mac_addr) {
6586                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6587                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6588         }
6589
6590         if (iwl4965_is_ready(priv))
6591                 iwl4965_set_mode(priv, conf->type);
6592
6593         mutex_unlock(&priv->mutex);
6594
6595         IWL_DEBUG_MAC80211("leave\n");
6596         return 0;
6597 }
6598
6599 /**
6600  * iwl4965_mac_config - mac80211 config callback
6601  *
6602  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6603  * be set inappropriately and the driver currently sets the hardware up to
6604  * use it whenever needed.
6605  */
6606 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6607 {
6608         struct iwl_priv *priv = hw->priv;
6609         const struct iwl_channel_info *ch_info;
6610         unsigned long flags;
6611         int ret = 0;
6612
6613         mutex_lock(&priv->mutex);
6614         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6615
6616         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6617
6618         if (!iwl4965_is_ready(priv)) {
6619                 IWL_DEBUG_MAC80211("leave - not ready\n");
6620                 ret = -EIO;
6621                 goto out;
6622         }
6623
6624         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6625                      test_bit(STATUS_SCANNING, &priv->status))) {
6626                 IWL_DEBUG_MAC80211("leave - scanning\n");
6627                 set_bit(STATUS_CONF_PENDING, &priv->status);
6628                 mutex_unlock(&priv->mutex);
6629                 return 0;
6630         }
6631
6632         spin_lock_irqsave(&priv->lock, flags);
6633
6634         ch_info = iwl_get_channel_info(priv, conf->channel->band,
6635                         ieee80211_frequency_to_channel(conf->channel->center_freq));
6636         if (!is_channel_valid(ch_info)) {
6637                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6638                 spin_unlock_irqrestore(&priv->lock, flags);
6639                 ret = -EINVAL;
6640                 goto out;
6641         }
6642
6643 #ifdef CONFIG_IWL4965_HT
6644         /* if we are switching from ht to 2.4 clear flags
6645          * from any ht related info since 2.4 does not
6646          * support ht */
6647         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6648 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6649             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6650 #endif
6651         )
6652                 priv->staging_rxon.flags = 0;
6653 #endif /* CONFIG_IWL4965_HT */
6654
6655         iwlcore_set_rxon_channel(priv, conf->channel->band,
6656                 ieee80211_frequency_to_channel(conf->channel->center_freq));
6657
6658         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6659
6660         /* The list of supported rates and rate mask can be different
6661          * for each band; since the band may have changed, reset
6662          * the rate mask to what mac80211 lists */
6663         iwl4965_set_rate(priv);
6664
6665         spin_unlock_irqrestore(&priv->lock, flags);
6666
6667 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6668         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6669                 iwl4965_hw_channel_switch(priv, conf->channel);
6670                 goto out;
6671         }
6672 #endif
6673
6674         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
6675
6676         if (!conf->radio_enabled) {
6677                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6678                 goto out;
6679         }
6680
6681         if (iwl4965_is_rfkill(priv)) {
6682                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6683                 ret = -EIO;
6684                 goto out;
6685         }
6686
6687         iwl4965_set_rate(priv);
6688
6689         if (memcmp(&priv->active_rxon,
6690                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6691                 iwl4965_commit_rxon(priv);
6692         else
6693                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6694
6695         IWL_DEBUG_MAC80211("leave\n");
6696
6697 out:
6698         clear_bit(STATUS_CONF_PENDING, &priv->status);
6699         mutex_unlock(&priv->mutex);
6700         return ret;
6701 }
6702
6703 static void iwl4965_config_ap(struct iwl_priv *priv)
6704 {
6705         int ret = 0;
6706
6707         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6708                 return;
6709
6710         /* The following should be done only at AP bring up */
6711         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6712
6713                 /* RXON - unassoc (to set timing command) */
6714                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6715                 iwl4965_commit_rxon(priv);
6716
6717                 /* RXON Timing */
6718                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6719                 iwl4965_setup_rxon_timing(priv);
6720                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6721                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6722                 if (ret)
6723                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6724                                         "Attempting to continue.\n");
6725
6726                 iwl4965_set_rxon_chain(priv);
6727
6728                 /* FIXME: what should be the assoc_id for AP? */
6729                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6730                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6731                         priv->staging_rxon.flags |=
6732                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6733                 else
6734                         priv->staging_rxon.flags &=
6735                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6736
6737                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6738                         if (priv->assoc_capability &
6739                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6740                                 priv->staging_rxon.flags |=
6741                                         RXON_FLG_SHORT_SLOT_MSK;
6742                         else
6743                                 priv->staging_rxon.flags &=
6744                                         ~RXON_FLG_SHORT_SLOT_MSK;
6745
6746                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6747                                 priv->staging_rxon.flags &=
6748                                         ~RXON_FLG_SHORT_SLOT_MSK;
6749                 }
6750                 /* restore RXON assoc */
6751                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6752                 iwl4965_commit_rxon(priv);
6753                 iwl4965_activate_qos(priv, 1);
6754                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6755         }
6756         iwl4965_send_beacon_cmd(priv);
6757
6758         /* FIXME - we need to add code here to detect a totally new
6759          * configuration, reset the AP, unassoc, rxon timing, assoc,
6760          * clear sta table, add BCAST sta... */
6761 }
6762
6763 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6764                                         struct ieee80211_vif *vif,
6765                                     struct ieee80211_if_conf *conf)
6766 {
6767         struct iwl_priv *priv = hw->priv;
6768         DECLARE_MAC_BUF(mac);
6769         unsigned long flags;
6770         int rc;
6771
6772         if (conf == NULL)
6773                 return -EIO;
6774
6775         if (priv->vif != vif) {
6776                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6777                 mutex_unlock(&priv->mutex);
6778                 return 0;
6779         }
6780
6781         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6782             (!conf->beacon || !conf->ssid_len)) {
6783                 IWL_DEBUG_MAC80211
6784                     ("Leaving in AP mode because HostAPD is not ready.\n");
6785                 return 0;
6786         }
6787
6788         if (!iwl4965_is_alive(priv))
6789                 return -EAGAIN;
6790
6791         mutex_lock(&priv->mutex);
6792
6793         if (conf->bssid)
6794                 IWL_DEBUG_MAC80211("bssid: %s\n",
6795                                    print_mac(mac, conf->bssid));
6796
6797 /*
6798  * very dubious code was here; the probe filtering flag is never set:
6799  *
6800         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6801             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6802  */
6803
6804         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6805                 if (!conf->bssid) {
6806                         conf->bssid = priv->mac_addr;
6807                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6808                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6809                                            print_mac(mac, conf->bssid));
6810                 }
6811                 if (priv->ibss_beacon)
6812                         dev_kfree_skb(priv->ibss_beacon);
6813
6814                 priv->ibss_beacon = conf->beacon;
6815         }
6816
6817         if (iwl4965_is_rfkill(priv))
6818                 goto done;
6819
6820         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6821             !is_multicast_ether_addr(conf->bssid)) {
6822                 /* If there is currently a HW scan going on in the background
6823                  * then we need to cancel it else the RXON below will fail. */
6824                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6825                         IWL_WARNING("Aborted scan still in progress "
6826                                     "after 100ms\n");
6827                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6828                         mutex_unlock(&priv->mutex);
6829                         return -EAGAIN;
6830                 }
6831                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6832
6833                 /* TODO: Audit driver for usage of these members and see
6834                  * if mac80211 deprecates them (priv->bssid looks like it
6835                  * shouldn't be there, but I haven't scanned the IBSS code
6836                  * to verify) - jpk */
6837                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6838
6839                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6840                         iwl4965_config_ap(priv);
6841                 else {
6842                         rc = iwl4965_commit_rxon(priv);
6843                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6844                                 iwl4965_rxon_add_station(
6845                                         priv, priv->active_rxon.bssid_addr, 1);
6846                 }
6847
6848         } else {
6849                 iwl4965_scan_cancel_timeout(priv, 100);
6850                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6851                 iwl4965_commit_rxon(priv);
6852         }
6853
6854  done:
6855         spin_lock_irqsave(&priv->lock, flags);
6856         if (!conf->ssid_len)
6857                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6858         else
6859                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6860
6861         priv->essid_len = conf->ssid_len;
6862         spin_unlock_irqrestore(&priv->lock, flags);
6863
6864         IWL_DEBUG_MAC80211("leave\n");
6865         mutex_unlock(&priv->mutex);
6866
6867         return 0;
6868 }
6869
6870 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6871                                  unsigned int changed_flags,
6872                                  unsigned int *total_flags,
6873                                  int mc_count, struct dev_addr_list *mc_list)
6874 {
6875         /*
6876          * XXX: dummy
6877          * see also iwl4965_connection_init_rx_config
6878          */
6879         *total_flags = 0;
6880 }
6881
6882 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6883                                      struct ieee80211_if_init_conf *conf)
6884 {
6885         struct iwl_priv *priv = hw->priv;
6886
6887         IWL_DEBUG_MAC80211("enter\n");
6888
6889         mutex_lock(&priv->mutex);
6890
6891         if (iwl4965_is_ready_rf(priv)) {
6892                 iwl4965_scan_cancel_timeout(priv, 100);
6893                 cancel_delayed_work(&priv->post_associate);
6894                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6895                 iwl4965_commit_rxon(priv);
6896         }
6897         if (priv->vif == conf->vif) {
6898                 priv->vif = NULL;
6899                 memset(priv->bssid, 0, ETH_ALEN);
6900                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6901                 priv->essid_len = 0;
6902         }
6903         mutex_unlock(&priv->mutex);
6904
6905         IWL_DEBUG_MAC80211("leave\n");
6906
6907 }
6908
6909 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6910                                      struct ieee80211_vif *vif,
6911                                      struct ieee80211_bss_conf *bss_conf,
6912                                      u32 changes)
6913 {
6914         struct iwl_priv *priv = hw->priv;
6915
6916         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6917                 if (bss_conf->use_short_preamble)
6918                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6919                 else
6920                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6921         }
6922
6923         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6924                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6925                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6926                 else
6927                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6928         }
6929
6930         if (changes & BSS_CHANGED_ASSOC) {
6931                 /*
6932                  * TODO:
6933                  * do stuff instead of sniffing assoc resp
6934                  */
6935         }
6936
6937         if (iwl4965_is_associated(priv))
6938                 iwl4965_send_rxon_assoc(priv);
6939 }
6940
6941 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6942 {
6943         int rc = 0;
6944         unsigned long flags;
6945         struct iwl_priv *priv = hw->priv;
6946
6947         IWL_DEBUG_MAC80211("enter\n");
6948
6949         mutex_lock(&priv->mutex);
6950         spin_lock_irqsave(&priv->lock, flags);
6951
6952         if (!iwl4965_is_ready_rf(priv)) {
6953                 rc = -EIO;
6954                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6955                 goto out_unlock;
6956         }
6957
6958         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
6959                 rc = -EIO;
6960                 IWL_ERROR("ERROR: APs don't scan\n");
6961                 goto out_unlock;
6962         }
6963
6964         /* we don't schedule scan within next_scan_jiffies period */
6965         if (priv->next_scan_jiffies &&
6966                         time_after(priv->next_scan_jiffies, jiffies)) {
6967                 rc = -EAGAIN;
6968                 goto out_unlock;
6969         }
6970         /* if we just finished scan ask for delay */
6971         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6972                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
6973                 rc = -EAGAIN;
6974                 goto out_unlock;
6975         }
6976         if (len) {
6977                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6978                                iwl4965_escape_essid(ssid, len), (int)len);
6979
6980                 priv->one_direct_scan = 1;
6981                 priv->direct_ssid_len = (u8)
6982                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6983                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6984         } else
6985                 priv->one_direct_scan = 0;
6986
6987         rc = iwl4965_scan_initiate(priv);
6988
6989         IWL_DEBUG_MAC80211("leave\n");
6990
6991 out_unlock:
6992         spin_unlock_irqrestore(&priv->lock, flags);
6993         mutex_unlock(&priv->mutex);
6994
6995         return rc;
6996 }
6997
6998 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6999                         struct ieee80211_key_conf *keyconf, const u8 *addr,
7000                         u32 iv32, u16 *phase1key)
7001 {
7002         struct iwl_priv *priv = hw->priv;
7003         u8 sta_id = IWL_INVALID_STATION;
7004         unsigned long flags;
7005         __le16 key_flags = 0;
7006         int i;
7007         DECLARE_MAC_BUF(mac);
7008
7009         IWL_DEBUG_MAC80211("enter\n");
7010
7011         sta_id = iwl4965_hw_find_station(priv, addr);
7012         if (sta_id == IWL_INVALID_STATION) {
7013                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7014                                    print_mac(mac, addr));
7015                 return;
7016         }
7017
7018         iwl4965_scan_cancel_timeout(priv, 100);
7019
7020         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
7021         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
7022         key_flags &= ~STA_KEY_FLG_INVALID;
7023
7024         if (sta_id == priv->hw_setting.bcast_sta_id)
7025                 key_flags |= STA_KEY_MULTICAST_MSK;
7026
7027         spin_lock_irqsave(&priv->sta_lock, flags);
7028
7029         priv->stations[sta_id].sta.key.key_offset =
7030                                         (sta_id % STA_KEY_MAX_NUM);/* FIXME */
7031         priv->stations[sta_id].sta.key.key_flags = key_flags;
7032         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
7033
7034         for (i = 0; i < 5; i++)
7035                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
7036                         cpu_to_le16(phase1key[i]);
7037
7038         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
7039         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7040
7041         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
7042
7043         spin_unlock_irqrestore(&priv->sta_lock, flags);
7044
7045         IWL_DEBUG_MAC80211("leave\n");
7046 }
7047
7048 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7049                            const u8 *local_addr, const u8 *addr,
7050                            struct ieee80211_key_conf *key)
7051 {
7052         struct iwl_priv *priv = hw->priv;
7053         DECLARE_MAC_BUF(mac);
7054         int ret = 0;
7055         u8 sta_id = IWL_INVALID_STATION;
7056         u8 static_key;
7057
7058         IWL_DEBUG_MAC80211("enter\n");
7059
7060         if (!priv->cfg->mod_params->hw_crypto) {
7061                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7062                 return -EOPNOTSUPP;
7063         }
7064
7065         if (is_zero_ether_addr(addr))
7066                 /* only support pairwise keys */
7067                 return -EOPNOTSUPP;
7068
7069         /* FIXME: need to differenciate between static and dynamic key
7070          * in the level of mac80211 */
7071         static_key = !iwl4965_is_associated(priv);
7072
7073         if (!static_key) {
7074                 sta_id = iwl4965_hw_find_station(priv, addr);
7075                 if (sta_id == IWL_INVALID_STATION) {
7076                         IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7077                                            print_mac(mac, addr));
7078                         return -EINVAL;
7079                 }
7080         }
7081
7082         iwl4965_scan_cancel_timeout(priv, 100);
7083
7084         switch (cmd) {
7085         case SET_KEY:
7086                 if (static_key)
7087                         ret = iwl4965_set_static_key(priv, key);
7088                 else
7089                         ret = iwl4965_set_dynamic_key(priv, key, sta_id);
7090
7091                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
7092                 break;
7093         case DISABLE_KEY:
7094                 if (static_key)
7095                         ret = iwl4965_remove_static_key(priv);
7096                 else
7097                         ret = iwl4965_clear_sta_key_info(priv, sta_id);
7098
7099                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7100                 break;
7101         default:
7102                 ret = -EINVAL;
7103         }
7104
7105         IWL_DEBUG_MAC80211("leave\n");
7106
7107         return ret;
7108 }
7109
7110 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7111                            const struct ieee80211_tx_queue_params *params)
7112 {
7113         struct iwl_priv *priv = hw->priv;
7114         unsigned long flags;
7115         int q;
7116
7117         IWL_DEBUG_MAC80211("enter\n");
7118
7119         if (!iwl4965_is_ready_rf(priv)) {
7120                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7121                 return -EIO;
7122         }
7123
7124         if (queue >= AC_NUM) {
7125                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7126                 return 0;
7127         }
7128
7129         if (!priv->qos_data.qos_enable) {
7130                 priv->qos_data.qos_active = 0;
7131                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7132                 return 0;
7133         }
7134         q = AC_NUM - 1 - queue;
7135
7136         spin_lock_irqsave(&priv->lock, flags);
7137
7138         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7139         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7140         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7141         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7142                         cpu_to_le16((params->txop * 32));
7143
7144         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7145         priv->qos_data.qos_active = 1;
7146
7147         spin_unlock_irqrestore(&priv->lock, flags);
7148
7149         mutex_lock(&priv->mutex);
7150         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7151                 iwl4965_activate_qos(priv, 1);
7152         else if (priv->assoc_id && iwl4965_is_associated(priv))
7153                 iwl4965_activate_qos(priv, 0);
7154
7155         mutex_unlock(&priv->mutex);
7156
7157         IWL_DEBUG_MAC80211("leave\n");
7158         return 0;
7159 }
7160
7161 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7162                                 struct ieee80211_tx_queue_stats *stats)
7163 {
7164         struct iwl_priv *priv = hw->priv;
7165         int i, avail;
7166         struct iwl4965_tx_queue *txq;
7167         struct iwl4965_queue *q;
7168         unsigned long flags;
7169
7170         IWL_DEBUG_MAC80211("enter\n");
7171
7172         if (!iwl4965_is_ready_rf(priv)) {
7173                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7174                 return -EIO;
7175         }
7176
7177         spin_lock_irqsave(&priv->lock, flags);
7178
7179         for (i = 0; i < AC_NUM; i++) {
7180                 txq = &priv->txq[i];
7181                 q = &txq->q;
7182                 avail = iwl4965_queue_space(q);
7183
7184                 stats->data[i].len = q->n_window - avail;
7185                 stats->data[i].limit = q->n_window - q->high_mark;
7186                 stats->data[i].count = q->n_window;
7187
7188         }
7189         spin_unlock_irqrestore(&priv->lock, flags);
7190
7191         IWL_DEBUG_MAC80211("leave\n");
7192
7193         return 0;
7194 }
7195
7196 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7197                              struct ieee80211_low_level_stats *stats)
7198 {
7199         IWL_DEBUG_MAC80211("enter\n");
7200         IWL_DEBUG_MAC80211("leave\n");
7201
7202         return 0;
7203 }
7204
7205 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7206 {
7207         IWL_DEBUG_MAC80211("enter\n");
7208         IWL_DEBUG_MAC80211("leave\n");
7209
7210         return 0;
7211 }
7212
7213 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7214 {
7215         struct iwl_priv *priv = hw->priv;
7216         unsigned long flags;
7217
7218         mutex_lock(&priv->mutex);
7219         IWL_DEBUG_MAC80211("enter\n");
7220
7221         priv->lq_mngr.lq_ready = 0;
7222 #ifdef CONFIG_IWL4965_HT
7223         spin_lock_irqsave(&priv->lock, flags);
7224         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7225         spin_unlock_irqrestore(&priv->lock, flags);
7226 #endif /* CONFIG_IWL4965_HT */
7227
7228         iwlcore_reset_qos(priv);
7229
7230         cancel_delayed_work(&priv->post_associate);
7231
7232         spin_lock_irqsave(&priv->lock, flags);
7233         priv->assoc_id = 0;
7234         priv->assoc_capability = 0;
7235         priv->call_post_assoc_from_beacon = 0;
7236         priv->assoc_station_added = 0;
7237
7238         /* new association get rid of ibss beacon skb */
7239         if (priv->ibss_beacon)
7240                 dev_kfree_skb(priv->ibss_beacon);
7241
7242         priv->ibss_beacon = NULL;
7243
7244         priv->beacon_int = priv->hw->conf.beacon_int;
7245         priv->timestamp1 = 0;
7246         priv->timestamp0 = 0;
7247         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7248                 priv->beacon_int = 0;
7249
7250         spin_unlock_irqrestore(&priv->lock, flags);
7251
7252         if (!iwl4965_is_ready_rf(priv)) {
7253                 IWL_DEBUG_MAC80211("leave - not ready\n");
7254                 mutex_unlock(&priv->mutex);
7255                 return;
7256         }
7257
7258         /* we are restarting association process
7259          * clear RXON_FILTER_ASSOC_MSK bit
7260          */
7261         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7262                 iwl4965_scan_cancel_timeout(priv, 100);
7263                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7264                 iwl4965_commit_rxon(priv);
7265         }
7266
7267         /* Per mac80211.h: This is only used in IBSS mode... */
7268         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7269
7270                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7271                 mutex_unlock(&priv->mutex);
7272                 return;
7273         }
7274
7275         priv->only_active_channel = 0;
7276
7277         iwl4965_set_rate(priv);
7278
7279         mutex_unlock(&priv->mutex);
7280
7281         IWL_DEBUG_MAC80211("leave\n");
7282 }
7283
7284 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7285                                  struct ieee80211_tx_control *control)
7286 {
7287         struct iwl_priv *priv = hw->priv;
7288         unsigned long flags;
7289
7290         mutex_lock(&priv->mutex);
7291         IWL_DEBUG_MAC80211("enter\n");
7292
7293         if (!iwl4965_is_ready_rf(priv)) {
7294                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7295                 mutex_unlock(&priv->mutex);
7296                 return -EIO;
7297         }
7298
7299         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7300                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7301                 mutex_unlock(&priv->mutex);
7302                 return -EIO;
7303         }
7304
7305         spin_lock_irqsave(&priv->lock, flags);
7306
7307         if (priv->ibss_beacon)
7308                 dev_kfree_skb(priv->ibss_beacon);
7309
7310         priv->ibss_beacon = skb;
7311
7312         priv->assoc_id = 0;
7313
7314         IWL_DEBUG_MAC80211("leave\n");
7315         spin_unlock_irqrestore(&priv->lock, flags);
7316
7317         iwlcore_reset_qos(priv);
7318
7319         queue_work(priv->workqueue, &priv->post_associate.work);
7320
7321         mutex_unlock(&priv->mutex);
7322
7323         return 0;
7324 }
7325
7326 #ifdef CONFIG_IWL4965_HT
7327
7328 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7329                                  struct iwl_priv *priv)
7330 {
7331         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7332         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7333         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7334
7335         IWL_DEBUG_MAC80211("enter: \n");
7336
7337         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7338                 iwl_conf->is_ht = 0;
7339                 return;
7340         }
7341
7342         iwl_conf->is_ht = 1;
7343         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7344
7345         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7346                 iwl_conf->sgf |= 0x1;
7347         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7348                 iwl_conf->sgf |= 0x2;
7349
7350         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7351         iwl_conf->max_amsdu_size =
7352                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7353
7354         iwl_conf->supported_chan_width =
7355                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7356         iwl_conf->extension_chan_offset =
7357                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7358         /* If no above or below channel supplied disable FAT channel */
7359         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7360             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7361                 iwl_conf->supported_chan_width = 0;
7362
7363         iwl_conf->tx_mimo_ps_mode =
7364                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7365         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7366
7367         iwl_conf->control_channel = ht_bss_conf->primary_channel;
7368         iwl_conf->tx_chan_width =
7369                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7370         iwl_conf->ht_protection =
7371                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7372         iwl_conf->non_GF_STA_present =
7373                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7374
7375         IWL_DEBUG_MAC80211("control channel %d\n",
7376                 iwl_conf->control_channel);
7377         IWL_DEBUG_MAC80211("leave\n");
7378 }
7379
7380 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7381                                struct ieee80211_conf *conf)
7382 {
7383         struct iwl_priv *priv = hw->priv;
7384
7385         IWL_DEBUG_MAC80211("enter: \n");
7386
7387         iwl4965_ht_info_fill(conf, priv);
7388         iwl4965_set_rxon_chain(priv);
7389
7390         if (priv && priv->assoc_id &&
7391             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
7392                 unsigned long flags;
7393
7394                 spin_lock_irqsave(&priv->lock, flags);
7395                 if (priv->beacon_int)
7396                         queue_work(priv->workqueue, &priv->post_associate.work);
7397                 else
7398                         priv->call_post_assoc_from_beacon = 1;
7399                 spin_unlock_irqrestore(&priv->lock, flags);
7400         }
7401
7402         IWL_DEBUG_MAC80211("leave:\n");
7403         return 0;
7404 }
7405
7406 #endif /*CONFIG_IWL4965_HT*/
7407
7408 /*****************************************************************************
7409  *
7410  * sysfs attributes
7411  *
7412  *****************************************************************************/
7413
7414 #ifdef CONFIG_IWLWIFI_DEBUG
7415
7416 /*
7417  * The following adds a new attribute to the sysfs representation
7418  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7419  * used for controlling the debug level.
7420  *
7421  * See the level definitions in iwl for details.
7422  */
7423
7424 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7425 {
7426         return sprintf(buf, "0x%08X\n", iwl_debug_level);
7427 }
7428 static ssize_t store_debug_level(struct device_driver *d,
7429                                  const char *buf, size_t count)
7430 {
7431         char *p = (char *)buf;
7432         u32 val;
7433
7434         val = simple_strtoul(p, &p, 0);
7435         if (p == buf)
7436                 printk(KERN_INFO DRV_NAME
7437                        ": %s is not in hex or decimal form.\n", buf);
7438         else
7439                 iwl_debug_level = val;
7440
7441         return strnlen(buf, count);
7442 }
7443
7444 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7445                    show_debug_level, store_debug_level);
7446
7447 #endif /* CONFIG_IWLWIFI_DEBUG */
7448
7449 static ssize_t show_rf_kill(struct device *d,
7450                             struct device_attribute *attr, char *buf)
7451 {
7452         /*
7453          * 0 - RF kill not enabled
7454          * 1 - SW based RF kill active (sysfs)
7455          * 2 - HW based RF kill active
7456          * 3 - Both HW and SW based RF kill active
7457          */
7458         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7459         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7460                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7461
7462         return sprintf(buf, "%i\n", val);
7463 }
7464
7465 static ssize_t store_rf_kill(struct device *d,
7466                              struct device_attribute *attr,
7467                              const char *buf, size_t count)
7468 {
7469         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7470
7471         mutex_lock(&priv->mutex);
7472         iwl4965_radio_kill_sw(priv, buf[0] == '1');
7473         mutex_unlock(&priv->mutex);
7474
7475         return count;
7476 }
7477
7478 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7479
7480 static ssize_t show_temperature(struct device *d,
7481                                 struct device_attribute *attr, char *buf)
7482 {
7483         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7484
7485         if (!iwl4965_is_alive(priv))
7486                 return -EAGAIN;
7487
7488         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7489 }
7490
7491 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7492
7493 static ssize_t show_rs_window(struct device *d,
7494                               struct device_attribute *attr,
7495                               char *buf)
7496 {
7497         struct iwl_priv *priv = d->driver_data;
7498         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7499 }
7500 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7501
7502 static ssize_t show_tx_power(struct device *d,
7503                              struct device_attribute *attr, char *buf)
7504 {
7505         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7506         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7507 }
7508
7509 static ssize_t store_tx_power(struct device *d,
7510                               struct device_attribute *attr,
7511                               const char *buf, size_t count)
7512 {
7513         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7514         char *p = (char *)buf;
7515         u32 val;
7516
7517         val = simple_strtoul(p, &p, 10);
7518         if (p == buf)
7519                 printk(KERN_INFO DRV_NAME
7520                        ": %s is not in decimal form.\n", buf);
7521         else
7522                 iwl4965_hw_reg_set_txpower(priv, val);
7523
7524         return count;
7525 }
7526
7527 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7528
7529 static ssize_t show_flags(struct device *d,
7530                           struct device_attribute *attr, char *buf)
7531 {
7532         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7533
7534         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7535 }
7536
7537 static ssize_t store_flags(struct device *d,
7538                            struct device_attribute *attr,
7539                            const char *buf, size_t count)
7540 {
7541         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7542         u32 flags = simple_strtoul(buf, NULL, 0);
7543
7544         mutex_lock(&priv->mutex);
7545         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7546                 /* Cancel any currently running scans... */
7547                 if (iwl4965_scan_cancel_timeout(priv, 100))
7548                         IWL_WARNING("Could not cancel scan.\n");
7549                 else {
7550                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7551                                        flags);
7552                         priv->staging_rxon.flags = cpu_to_le32(flags);
7553                         iwl4965_commit_rxon(priv);
7554                 }
7555         }
7556         mutex_unlock(&priv->mutex);
7557
7558         return count;
7559 }
7560
7561 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7562
7563 static ssize_t show_filter_flags(struct device *d,
7564                                  struct device_attribute *attr, char *buf)
7565 {
7566         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7567
7568         return sprintf(buf, "0x%04X\n",
7569                 le32_to_cpu(priv->active_rxon.filter_flags));
7570 }
7571
7572 static ssize_t store_filter_flags(struct device *d,
7573                                   struct device_attribute *attr,
7574                                   const char *buf, size_t count)
7575 {
7576         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7577         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7578
7579         mutex_lock(&priv->mutex);
7580         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7581                 /* Cancel any currently running scans... */
7582                 if (iwl4965_scan_cancel_timeout(priv, 100))
7583                         IWL_WARNING("Could not cancel scan.\n");
7584                 else {
7585                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7586                                        "0x%04X\n", filter_flags);
7587                         priv->staging_rxon.filter_flags =
7588                                 cpu_to_le32(filter_flags);
7589                         iwl4965_commit_rxon(priv);
7590                 }
7591         }
7592         mutex_unlock(&priv->mutex);
7593
7594         return count;
7595 }
7596
7597 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7598                    store_filter_flags);
7599
7600 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7601
7602 static ssize_t show_measurement(struct device *d,
7603                                 struct device_attribute *attr, char *buf)
7604 {
7605         struct iwl_priv *priv = dev_get_drvdata(d);
7606         struct iwl4965_spectrum_notification measure_report;
7607         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7608         u8 *data = (u8 *) & measure_report;
7609         unsigned long flags;
7610
7611         spin_lock_irqsave(&priv->lock, flags);
7612         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7613                 spin_unlock_irqrestore(&priv->lock, flags);
7614                 return 0;
7615         }
7616         memcpy(&measure_report, &priv->measure_report, size);
7617         priv->measurement_status = 0;
7618         spin_unlock_irqrestore(&priv->lock, flags);
7619
7620         while (size && (PAGE_SIZE - len)) {
7621                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7622                                    PAGE_SIZE - len, 1);
7623                 len = strlen(buf);
7624                 if (PAGE_SIZE - len)
7625                         buf[len++] = '\n';
7626
7627                 ofs += 16;
7628                 size -= min(size, 16U);
7629         }
7630
7631         return len;
7632 }
7633
7634 static ssize_t store_measurement(struct device *d,
7635                                  struct device_attribute *attr,
7636                                  const char *buf, size_t count)
7637 {
7638         struct iwl_priv *priv = dev_get_drvdata(d);
7639         struct ieee80211_measurement_params params = {
7640                 .channel = le16_to_cpu(priv->active_rxon.channel),
7641                 .start_time = cpu_to_le64(priv->last_tsf),
7642                 .duration = cpu_to_le16(1),
7643         };
7644         u8 type = IWL_MEASURE_BASIC;
7645         u8 buffer[32];
7646         u8 channel;
7647
7648         if (count) {
7649                 char *p = buffer;
7650                 strncpy(buffer, buf, min(sizeof(buffer), count));
7651                 channel = simple_strtoul(p, NULL, 0);
7652                 if (channel)
7653                         params.channel = channel;
7654
7655                 p = buffer;
7656                 while (*p && *p != ' ')
7657                         p++;
7658                 if (*p)
7659                         type = simple_strtoul(p + 1, NULL, 0);
7660         }
7661
7662         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7663                        "channel %d (for '%s')\n", type, params.channel, buf);
7664         iwl4965_get_measurement(priv, &params, type);
7665
7666         return count;
7667 }
7668
7669 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7670                    show_measurement, store_measurement);
7671 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7672
7673 static ssize_t store_retry_rate(struct device *d,
7674                                 struct device_attribute *attr,
7675                                 const char *buf, size_t count)
7676 {
7677         struct iwl_priv *priv = dev_get_drvdata(d);
7678
7679         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7680         if (priv->retry_rate <= 0)
7681                 priv->retry_rate = 1;
7682
7683         return count;
7684 }
7685
7686 static ssize_t show_retry_rate(struct device *d,
7687                                struct device_attribute *attr, char *buf)
7688 {
7689         struct iwl_priv *priv = dev_get_drvdata(d);
7690         return sprintf(buf, "%d", priv->retry_rate);
7691 }
7692
7693 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7694                    store_retry_rate);
7695
7696 static ssize_t store_power_level(struct device *d,
7697                                  struct device_attribute *attr,
7698                                  const char *buf, size_t count)
7699 {
7700         struct iwl_priv *priv = dev_get_drvdata(d);
7701         int rc;
7702         int mode;
7703
7704         mode = simple_strtoul(buf, NULL, 0);
7705         mutex_lock(&priv->mutex);
7706
7707         if (!iwl4965_is_ready(priv)) {
7708                 rc = -EAGAIN;
7709                 goto out;
7710         }
7711
7712         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7713                 mode = IWL_POWER_AC;
7714         else
7715                 mode |= IWL_POWER_ENABLED;
7716
7717         if (mode != priv->power_mode) {
7718                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7719                 if (rc) {
7720                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7721                         goto out;
7722                 }
7723                 priv->power_mode = mode;
7724         }
7725
7726         rc = count;
7727
7728  out:
7729         mutex_unlock(&priv->mutex);
7730         return rc;
7731 }
7732
7733 #define MAX_WX_STRING 80
7734
7735 /* Values are in microsecond */
7736 static const s32 timeout_duration[] = {
7737         350000,
7738         250000,
7739         75000,
7740         37000,
7741         25000,
7742 };
7743 static const s32 period_duration[] = {
7744         400000,
7745         700000,
7746         1000000,
7747         1000000,
7748         1000000
7749 };
7750
7751 static ssize_t show_power_level(struct device *d,
7752                                 struct device_attribute *attr, char *buf)
7753 {
7754         struct iwl_priv *priv = dev_get_drvdata(d);
7755         int level = IWL_POWER_LEVEL(priv->power_mode);
7756         char *p = buf;
7757
7758         p += sprintf(p, "%d ", level);
7759         switch (level) {
7760         case IWL_POWER_MODE_CAM:
7761         case IWL_POWER_AC:
7762                 p += sprintf(p, "(AC)");
7763                 break;
7764         case IWL_POWER_BATTERY:
7765                 p += sprintf(p, "(BATTERY)");
7766                 break;
7767         default:
7768                 p += sprintf(p,
7769                              "(Timeout %dms, Period %dms)",
7770                              timeout_duration[level - 1] / 1000,
7771                              period_duration[level - 1] / 1000);
7772         }
7773
7774         if (!(priv->power_mode & IWL_POWER_ENABLED))
7775                 p += sprintf(p, " OFF\n");
7776         else
7777                 p += sprintf(p, " \n");
7778
7779         return (p - buf + 1);
7780
7781 }
7782
7783 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7784                    store_power_level);
7785
7786 static ssize_t show_channels(struct device *d,
7787                              struct device_attribute *attr, char *buf)
7788 {
7789         /* all this shit doesn't belong into sysfs anyway */
7790         return 0;
7791 }
7792
7793 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7794
7795 static ssize_t show_statistics(struct device *d,
7796                                struct device_attribute *attr, char *buf)
7797 {
7798         struct iwl_priv *priv = dev_get_drvdata(d);
7799         u32 size = sizeof(struct iwl4965_notif_statistics);
7800         u32 len = 0, ofs = 0;
7801         u8 *data = (u8 *) & priv->statistics;
7802         int rc = 0;
7803
7804         if (!iwl4965_is_alive(priv))
7805                 return -EAGAIN;
7806
7807         mutex_lock(&priv->mutex);
7808         rc = iwl4965_send_statistics_request(priv);
7809         mutex_unlock(&priv->mutex);
7810
7811         if (rc) {
7812                 len = sprintf(buf,
7813                               "Error sending statistics request: 0x%08X\n", rc);
7814                 return len;
7815         }
7816
7817         while (size && (PAGE_SIZE - len)) {
7818                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7819                                    PAGE_SIZE - len, 1);
7820                 len = strlen(buf);
7821                 if (PAGE_SIZE - len)
7822                         buf[len++] = '\n';
7823
7824                 ofs += 16;
7825                 size -= min(size, 16U);
7826         }
7827
7828         return len;
7829 }
7830
7831 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7832
7833 static ssize_t show_antenna(struct device *d,
7834                             struct device_attribute *attr, char *buf)
7835 {
7836         struct iwl_priv *priv = dev_get_drvdata(d);
7837
7838         if (!iwl4965_is_alive(priv))
7839                 return -EAGAIN;
7840
7841         return sprintf(buf, "%d\n", priv->antenna);
7842 }
7843
7844 static ssize_t store_antenna(struct device *d,
7845                              struct device_attribute *attr,
7846                              const char *buf, size_t count)
7847 {
7848         int ant;
7849         struct iwl_priv *priv = dev_get_drvdata(d);
7850
7851         if (count == 0)
7852                 return 0;
7853
7854         if (sscanf(buf, "%1i", &ant) != 1) {
7855                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7856                 return count;
7857         }
7858
7859         if ((ant >= 0) && (ant <= 2)) {
7860                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7861                 priv->antenna = (enum iwl4965_antenna)ant;
7862         } else
7863                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7864
7865
7866         return count;
7867 }
7868
7869 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7870
7871 static ssize_t show_status(struct device *d,
7872                            struct device_attribute *attr, char *buf)
7873 {
7874         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7875         if (!iwl4965_is_alive(priv))
7876                 return -EAGAIN;
7877         return sprintf(buf, "0x%08x\n", (int)priv->status);
7878 }
7879
7880 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7881
7882 static ssize_t dump_error_log(struct device *d,
7883                               struct device_attribute *attr,
7884                               const char *buf, size_t count)
7885 {
7886         char *p = (char *)buf;
7887
7888         if (p[0] == '1')
7889                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7890
7891         return strnlen(buf, count);
7892 }
7893
7894 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7895
7896 static ssize_t dump_event_log(struct device *d,
7897                               struct device_attribute *attr,
7898                               const char *buf, size_t count)
7899 {
7900         char *p = (char *)buf;
7901
7902         if (p[0] == '1')
7903                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7904
7905         return strnlen(buf, count);
7906 }
7907
7908 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7909
7910 /*****************************************************************************
7911  *
7912  * driver setup and teardown
7913  *
7914  *****************************************************************************/
7915
7916 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7917 {
7918         priv->workqueue = create_workqueue(DRV_NAME);
7919
7920         init_waitqueue_head(&priv->wait_command_queue);
7921
7922         INIT_WORK(&priv->up, iwl4965_bg_up);
7923         INIT_WORK(&priv->restart, iwl4965_bg_restart);
7924         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7925         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7926         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7927         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7928         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7929         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7930         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7931         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7932         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7933         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7934
7935         iwl4965_hw_setup_deferred_work(priv);
7936
7937         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7938                      iwl4965_irq_tasklet, (unsigned long)priv);
7939 }
7940
7941 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7942 {
7943         iwl4965_hw_cancel_deferred_work(priv);
7944
7945         cancel_delayed_work_sync(&priv->init_alive_start);
7946         cancel_delayed_work(&priv->scan_check);
7947         cancel_delayed_work(&priv->alive_start);
7948         cancel_delayed_work(&priv->post_associate);
7949         cancel_work_sync(&priv->beacon_update);
7950 }
7951
7952 static struct attribute *iwl4965_sysfs_entries[] = {
7953         &dev_attr_antenna.attr,
7954         &dev_attr_channels.attr,
7955         &dev_attr_dump_errors.attr,
7956         &dev_attr_dump_events.attr,
7957         &dev_attr_flags.attr,
7958         &dev_attr_filter_flags.attr,
7959 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7960         &dev_attr_measurement.attr,
7961 #endif
7962         &dev_attr_power_level.attr,
7963         &dev_attr_retry_rate.attr,
7964         &dev_attr_rf_kill.attr,
7965         &dev_attr_rs_window.attr,
7966         &dev_attr_statistics.attr,
7967         &dev_attr_status.attr,
7968         &dev_attr_temperature.attr,
7969         &dev_attr_tx_power.attr,
7970
7971         NULL
7972 };
7973
7974 static struct attribute_group iwl4965_attribute_group = {
7975         .name = NULL,           /* put in device directory */
7976         .attrs = iwl4965_sysfs_entries,
7977 };
7978
7979 static struct ieee80211_ops iwl4965_hw_ops = {
7980         .tx = iwl4965_mac_tx,
7981         .start = iwl4965_mac_start,
7982         .stop = iwl4965_mac_stop,
7983         .add_interface = iwl4965_mac_add_interface,
7984         .remove_interface = iwl4965_mac_remove_interface,
7985         .config = iwl4965_mac_config,
7986         .config_interface = iwl4965_mac_config_interface,
7987         .configure_filter = iwl4965_configure_filter,
7988         .set_key = iwl4965_mac_set_key,
7989         .update_tkip_key = iwl4965_mac_update_tkip_key,
7990         .get_stats = iwl4965_mac_get_stats,
7991         .get_tx_stats = iwl4965_mac_get_tx_stats,
7992         .conf_tx = iwl4965_mac_conf_tx,
7993         .get_tsf = iwl4965_mac_get_tsf,
7994         .reset_tsf = iwl4965_mac_reset_tsf,
7995         .beacon_update = iwl4965_mac_beacon_update,
7996         .bss_info_changed = iwl4965_bss_info_changed,
7997 #ifdef CONFIG_IWL4965_HT
7998         .conf_ht = iwl4965_mac_conf_ht,
7999         .ampdu_action = iwl4965_mac_ampdu_action,
8000 #endif  /* CONFIG_IWL4965_HT */
8001         .hw_scan = iwl4965_mac_hw_scan
8002 };
8003
8004 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8005 {
8006         int err = 0;
8007         struct iwl_priv *priv;
8008         struct ieee80211_hw *hw;
8009         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
8010         DECLARE_MAC_BUF(mac);
8011
8012         /************************
8013          * 1. Allocating HW data
8014          ************************/
8015
8016         /* Disabling hardware scan means that mac80211 will perform scans
8017          * "the hard way", rather than using device's scan. */
8018         if (cfg->mod_params->disable_hw_scan) {
8019                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8020                 iwl4965_hw_ops.hw_scan = NULL;
8021         }
8022
8023         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
8024         if (!hw) {
8025                 err = -ENOMEM;
8026                 goto out;
8027         }
8028         priv = hw->priv;
8029         /* At this point both hw and priv are allocated. */
8030
8031         SET_IEEE80211_DEV(hw, &pdev->dev);
8032
8033         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8034         priv->cfg = cfg;
8035         priv->pci_dev = pdev;
8036
8037 #ifdef CONFIG_IWLWIFI_DEBUG
8038         iwl_debug_level = priv->cfg->mod_params->debug;
8039         atomic_set(&priv->restrict_refcnt, 0);
8040 #endif
8041
8042         /**************************
8043          * 2. Initializing PCI bus
8044          **************************/
8045         if (pci_enable_device(pdev)) {
8046                 err = -ENODEV;
8047                 goto out_ieee80211_free_hw;
8048         }
8049
8050         pci_set_master(pdev);
8051
8052         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8053         if (!err)
8054                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8055                 if (err) {
8056                         printk(KERN_WARNING DRV_NAME
8057                                 ": No suitable DMA available.\n");
8058                         goto out_pci_disable_device;
8059         }
8060
8061         err = pci_request_regions(pdev, DRV_NAME);
8062         if (err)
8063                 goto out_pci_disable_device;
8064
8065         pci_set_drvdata(pdev, priv);
8066
8067         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8068          * PCI Tx retries from interfering with C3 CPU state */
8069         pci_write_config_byte(pdev, 0x41, 0x00);
8070
8071         /***********************
8072          * 3. Read REV register
8073          ***********************/
8074         priv->hw_base = pci_iomap(pdev, 0, 0);
8075         if (!priv->hw_base) {
8076                 err = -ENODEV;
8077                 goto out_pci_release_regions;
8078         }
8079
8080         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8081                 (unsigned long long) pci_resource_len(pdev, 0));
8082         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8083
8084         printk(KERN_INFO DRV_NAME
8085                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8086
8087         /*****************
8088          * 4. Read EEPROM
8089          *****************/
8090         /* nic init */
8091         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8092                 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8093
8094         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8095         err = iwl_poll_bit(priv, CSR_GP_CNTRL,
8096                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8097                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8098         if (err < 0) {
8099                 IWL_DEBUG_INFO("Failed to init the card\n");
8100                 goto out_iounmap;
8101         }
8102         /* Read the EEPROM */
8103         err = iwl_eeprom_init(priv);
8104         if (err) {
8105                 IWL_ERROR("Unable to init EEPROM\n");
8106                 goto out_iounmap;
8107         }
8108         /* MAC Address location in EEPROM same for 3945/4965 */
8109         iwl_eeprom_get_mac(priv, priv->mac_addr);
8110         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8111         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8112
8113         /************************
8114          * 5. Setup HW constants
8115          ************************/
8116         /* Device-specific setup */
8117         if (iwl4965_hw_set_hw_setting(priv)) {
8118                 IWL_ERROR("failed to set hw settings\n");
8119                 goto out_iounmap;
8120         }
8121
8122         /*******************
8123          * 6. Setup hw/priv
8124          *******************/
8125
8126         err = iwl_setup(priv);
8127         if (err)
8128                 goto out_unset_hw_settings;
8129         /* At this point both hw and priv are initialized. */
8130
8131         /**********************************
8132          * 7. Initialize module parameters
8133          **********************************/
8134
8135         /* Disable radio (SW RF KILL) via parameter when loading driver */
8136         if (priv->cfg->mod_params->disable) {
8137                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8138                 IWL_DEBUG_INFO("Radio disabled.\n");
8139         }
8140
8141         if (priv->cfg->mod_params->enable_qos)
8142                 priv->qos_data.qos_enable = 1;
8143
8144         /********************
8145          * 8. Setup services
8146          ********************/
8147         iwl4965_disable_interrupts(priv);
8148
8149         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8150         if (err) {
8151                 IWL_ERROR("failed to create sysfs device attributes\n");
8152                 goto out_unset_hw_settings;
8153         }
8154
8155         err = iwl_dbgfs_register(priv, DRV_NAME);
8156         if (err) {
8157                 IWL_ERROR("failed to create debugfs files\n");
8158                 goto out_remove_sysfs;
8159         }
8160
8161         iwl4965_setup_deferred_work(priv);
8162         iwl4965_setup_rx_handlers(priv);
8163
8164         /********************
8165          * 9. Conclude
8166          ********************/
8167         pci_save_state(pdev);
8168         pci_disable_device(pdev);
8169
8170         return 0;
8171
8172  out_remove_sysfs:
8173         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8174  out_unset_hw_settings:
8175         iwl4965_unset_hw_setting(priv);
8176  out_iounmap:
8177         pci_iounmap(pdev, priv->hw_base);
8178  out_pci_release_regions:
8179         pci_release_regions(pdev);
8180         pci_set_drvdata(pdev, NULL);
8181  out_pci_disable_device:
8182         pci_disable_device(pdev);
8183  out_ieee80211_free_hw:
8184         ieee80211_free_hw(priv->hw);
8185  out:
8186         return err;
8187 }
8188
8189 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
8190 {
8191         struct iwl_priv *priv = pci_get_drvdata(pdev);
8192         struct list_head *p, *q;
8193         int i;
8194
8195         if (!priv)
8196                 return;
8197
8198         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8199
8200         set_bit(STATUS_EXIT_PENDING, &priv->status);
8201
8202         iwl4965_down(priv);
8203
8204         /* Free MAC hash list for ADHOC */
8205         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8206                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8207                         list_del(p);
8208                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8209                 }
8210         }
8211
8212         iwl_dbgfs_unregister(priv);
8213         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8214
8215         iwl4965_dealloc_ucode_pci(priv);
8216
8217         if (priv->rxq.bd)
8218                 iwl4965_rx_queue_free(priv, &priv->rxq);
8219         iwl4965_hw_txq_ctx_free(priv);
8220
8221         iwl4965_unset_hw_setting(priv);
8222         iwlcore_clear_stations_table(priv);
8223
8224         if (priv->mac80211_registered) {
8225                 ieee80211_unregister_hw(priv->hw);
8226                 iwl4965_rate_control_unregister(priv->hw);
8227         }
8228
8229         /*netif_stop_queue(dev); */
8230         flush_workqueue(priv->workqueue);
8231
8232         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8233          * priv->workqueue... so we can't take down the workqueue
8234          * until now... */
8235         destroy_workqueue(priv->workqueue);
8236         priv->workqueue = NULL;
8237
8238         pci_iounmap(pdev, priv->hw_base);
8239         pci_release_regions(pdev);
8240         pci_disable_device(pdev);
8241         pci_set_drvdata(pdev, NULL);
8242
8243         iwl_free_channel_map(priv);
8244         iwl4965_free_geos(priv);
8245
8246         if (priv->ibss_beacon)
8247                 dev_kfree_skb(priv->ibss_beacon);
8248
8249         ieee80211_free_hw(priv->hw);
8250 }
8251
8252 #ifdef CONFIG_PM
8253
8254 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8255 {
8256         struct iwl_priv *priv = pci_get_drvdata(pdev);
8257
8258         if (priv->is_open) {
8259                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8260                 iwl4965_mac_stop(priv->hw);
8261                 priv->is_open = 1;
8262         }
8263
8264         pci_set_power_state(pdev, PCI_D3hot);
8265
8266         return 0;
8267 }
8268
8269 static int iwl4965_pci_resume(struct pci_dev *pdev)
8270 {
8271         struct iwl_priv *priv = pci_get_drvdata(pdev);
8272
8273         pci_set_power_state(pdev, PCI_D0);
8274
8275         if (priv->is_open)
8276                 iwl4965_mac_start(priv->hw);
8277
8278         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8279         return 0;
8280 }
8281
8282 #endif /* CONFIG_PM */
8283
8284 /*****************************************************************************
8285  *
8286  * driver and module entry point
8287  *
8288  *****************************************************************************/
8289
8290 static struct pci_driver iwl4965_driver = {
8291         .name = DRV_NAME,
8292         .id_table = iwl4965_hw_card_ids,
8293         .probe = iwl4965_pci_probe,
8294         .remove = __devexit_p(iwl4965_pci_remove),
8295 #ifdef CONFIG_PM
8296         .suspend = iwl4965_pci_suspend,
8297         .resume = iwl4965_pci_resume,
8298 #endif
8299 };
8300
8301 static int __init iwl4965_init(void)
8302 {
8303
8304         int ret;
8305         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8306         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8307         ret = pci_register_driver(&iwl4965_driver);
8308         if (ret) {
8309                 IWL_ERROR("Unable to initialize PCI module\n");
8310                 return ret;
8311         }
8312 #ifdef CONFIG_IWLWIFI_DEBUG
8313         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8314         if (ret) {
8315                 IWL_ERROR("Unable to create driver sysfs file\n");
8316                 pci_unregister_driver(&iwl4965_driver);
8317                 return ret;
8318         }
8319 #endif
8320
8321         return ret;
8322 }
8323
8324 static void __exit iwl4965_exit(void)
8325 {
8326 #ifdef CONFIG_IWLWIFI_DEBUG
8327         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8328 #endif
8329         pci_unregister_driver(&iwl4965_driver);
8330 }
8331
8332 module_exit(iwl4965_exit);
8333 module_init(iwl4965_init);