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 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                         /* call the host command only if no hw rf-kill set */
2629                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2630                                 iwl4965_send_card_state(priv,
2631                                                         CARD_STATE_CMD_DISABLE,
2632                                                         0);
2633                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2634
2635                         /* make sure mac80211 stop sending Tx frame */
2636                         if (priv->mac80211_registered)
2637                                 ieee80211_stop_queues(priv->hw);
2638                 }
2639                 return;
2640         }
2641
2642         spin_lock_irqsave(&priv->lock, flags);
2643         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2644
2645         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2646         spin_unlock_irqrestore(&priv->lock, flags);
2647
2648         /* wake up ucode */
2649         msleep(10);
2650
2651         spin_lock_irqsave(&priv->lock, flags);
2652         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2653         if (!iwl_grab_nic_access(priv))
2654                 iwl_release_nic_access(priv);
2655         spin_unlock_irqrestore(&priv->lock, flags);
2656
2657         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2658                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2659                                   "disabled by HW switch\n");
2660                 return;
2661         }
2662
2663         queue_work(priv->workqueue, &priv->restart);
2664         return;
2665 }
2666
2667 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2668                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2669 {
2670         u16 fc =
2671             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2672
2673         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2674                 return;
2675
2676         if (!(fc & IEEE80211_FCTL_PROTECTED))
2677                 return;
2678
2679         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2680         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2681         case RX_RES_STATUS_SEC_TYPE_TKIP:
2682                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2683                  * Decryption will be done in SW. */
2684                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2685                     RX_RES_STATUS_BAD_KEY_TTAK)
2686                         break;
2687
2688                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2689                     RX_RES_STATUS_BAD_ICV_MIC)
2690                         stats->flag |= RX_FLAG_MMIC_ERROR;
2691         case RX_RES_STATUS_SEC_TYPE_WEP:
2692         case RX_RES_STATUS_SEC_TYPE_CCMP:
2693                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2694                     RX_RES_STATUS_DECRYPT_OK) {
2695                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2696                         stats->flag |= RX_FLAG_DECRYPTED;
2697                 }
2698                 break;
2699
2700         default:
2701                 break;
2702         }
2703 }
2704
2705
2706 #define IWL_PACKET_RETRY_TIME HZ
2707
2708 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2709 {
2710         u16 sc = le16_to_cpu(header->seq_ctrl);
2711         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2712         u16 frag = sc & IEEE80211_SCTL_FRAG;
2713         u16 *last_seq, *last_frag;
2714         unsigned long *last_time;
2715
2716         switch (priv->iw_mode) {
2717         case IEEE80211_IF_TYPE_IBSS:{
2718                 struct list_head *p;
2719                 struct iwl4965_ibss_seq *entry = NULL;
2720                 u8 *mac = header->addr2;
2721                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2722
2723                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2724                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2725                         if (!compare_ether_addr(entry->mac, mac))
2726                                 break;
2727                 }
2728                 if (p == &priv->ibss_mac_hash[index]) {
2729                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2730                         if (!entry) {
2731                                 IWL_ERROR("Cannot malloc new mac entry\n");
2732                                 return 0;
2733                         }
2734                         memcpy(entry->mac, mac, ETH_ALEN);
2735                         entry->seq_num = seq;
2736                         entry->frag_num = frag;
2737                         entry->packet_time = jiffies;
2738                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2739                         return 0;
2740                 }
2741                 last_seq = &entry->seq_num;
2742                 last_frag = &entry->frag_num;
2743                 last_time = &entry->packet_time;
2744                 break;
2745         }
2746         case IEEE80211_IF_TYPE_STA:
2747                 last_seq = &priv->last_seq_num;
2748                 last_frag = &priv->last_frag_num;
2749                 last_time = &priv->last_packet_time;
2750                 break;
2751         default:
2752                 return 0;
2753         }
2754         if ((*last_seq == seq) &&
2755             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2756                 if (*last_frag == frag)
2757                         goto drop;
2758                 if (*last_frag + 1 != frag)
2759                         /* out-of-order fragment */
2760                         goto drop;
2761         } else
2762                 *last_seq = seq;
2763
2764         *last_frag = frag;
2765         *last_time = jiffies;
2766         return 0;
2767
2768  drop:
2769         return 1;
2770 }
2771
2772 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2773
2774 #include "iwl-spectrum.h"
2775
2776 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2777 #define BEACON_TIME_MASK_HIGH   0xFF000000
2778 #define TIME_UNIT               1024
2779
2780 /*
2781  * extended beacon time format
2782  * time in usec will be changed into a 32-bit value in 8:24 format
2783  * the high 1 byte is the beacon counts
2784  * the lower 3 bytes is the time in usec within one beacon interval
2785  */
2786
2787 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2788 {
2789         u32 quot;
2790         u32 rem;
2791         u32 interval = beacon_interval * 1024;
2792
2793         if (!interval || !usec)
2794                 return 0;
2795
2796         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2797         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2798
2799         return (quot << 24) + rem;
2800 }
2801
2802 /* base is usually what we get from ucode with each received frame,
2803  * the same as HW timer counter counting down
2804  */
2805
2806 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2807 {
2808         u32 base_low = base & BEACON_TIME_MASK_LOW;
2809         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2810         u32 interval = beacon_interval * TIME_UNIT;
2811         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2812             (addon & BEACON_TIME_MASK_HIGH);
2813
2814         if (base_low > addon_low)
2815                 res += base_low - addon_low;
2816         else if (base_low < addon_low) {
2817                 res += interval + base_low - addon_low;
2818                 res += (1 << 24);
2819         } else
2820                 res += (1 << 24);
2821
2822         return cpu_to_le32(res);
2823 }
2824
2825 static int iwl4965_get_measurement(struct iwl_priv *priv,
2826                                struct ieee80211_measurement_params *params,
2827                                u8 type)
2828 {
2829         struct iwl4965_spectrum_cmd spectrum;
2830         struct iwl4965_rx_packet *res;
2831         struct iwl_host_cmd cmd = {
2832                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2833                 .data = (void *)&spectrum,
2834                 .meta.flags = CMD_WANT_SKB,
2835         };
2836         u32 add_time = le64_to_cpu(params->start_time);
2837         int rc;
2838         int spectrum_resp_status;
2839         int duration = le16_to_cpu(params->duration);
2840
2841         if (iwl4965_is_associated(priv))
2842                 add_time =
2843                     iwl4965_usecs_to_beacons(
2844                         le64_to_cpu(params->start_time) - priv->last_tsf,
2845                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2846
2847         memset(&spectrum, 0, sizeof(spectrum));
2848
2849         spectrum.channel_count = cpu_to_le16(1);
2850         spectrum.flags =
2851             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2852         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2853         cmd.len = sizeof(spectrum);
2854         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2855
2856         if (iwl4965_is_associated(priv))
2857                 spectrum.start_time =
2858                     iwl4965_add_beacon_time(priv->last_beacon_time,
2859                                 add_time,
2860                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2861         else
2862                 spectrum.start_time = 0;
2863
2864         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2865         spectrum.channels[0].channel = params->channel;
2866         spectrum.channels[0].type = type;
2867         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2868                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2869                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2870
2871         rc = iwl_send_cmd_sync(priv, &cmd);
2872         if (rc)
2873                 return rc;
2874
2875         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2876         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2877                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2878                 rc = -EIO;
2879         }
2880
2881         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2882         switch (spectrum_resp_status) {
2883         case 0:         /* Command will be handled */
2884                 if (res->u.spectrum.id != 0xff) {
2885                         IWL_DEBUG_INFO
2886                             ("Replaced existing measurement: %d\n",
2887                              res->u.spectrum.id);
2888                         priv->measurement_status &= ~MEASUREMENT_READY;
2889                 }
2890                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2891                 rc = 0;
2892                 break;
2893
2894         case 1:         /* Command will not be handled */
2895                 rc = -EAGAIN;
2896                 break;
2897         }
2898
2899         dev_kfree_skb_any(cmd.meta.u.skb);
2900
2901         return rc;
2902 }
2903 #endif
2904
2905 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2906                                  struct iwl4965_tx_info *tx_sta)
2907 {
2908
2909         tx_sta->status.ack_signal = 0;
2910         tx_sta->status.excessive_retries = 0;
2911         tx_sta->status.queue_length = 0;
2912         tx_sta->status.queue_number = 0;
2913
2914         if (in_interrupt())
2915                 ieee80211_tx_status_irqsafe(priv->hw,
2916                                             tx_sta->skb[0], &(tx_sta->status));
2917         else
2918                 ieee80211_tx_status(priv->hw,
2919                                     tx_sta->skb[0], &(tx_sta->status));
2920
2921         tx_sta->skb[0] = NULL;
2922 }
2923
2924 /**
2925  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2926  *
2927  * When FW advances 'R' index, all entries between old and new 'R' index
2928  * need to be reclaimed. As result, some free space forms.  If there is
2929  * enough free space (> low mark), wake the stack that feeds us.
2930  */
2931 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2932 {
2933         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2934         struct iwl4965_queue *q = &txq->q;
2935         int nfreed = 0;
2936
2937         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2938                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2939                           "is out of range [0-%d] %d %d.\n", txq_id,
2940                           index, q->n_bd, q->write_ptr, q->read_ptr);
2941                 return 0;
2942         }
2943
2944         for (index = iwl_queue_inc_wrap(index, q->n_bd);
2945                 q->read_ptr != index;
2946                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2947                 if (txq_id != IWL_CMD_QUEUE_NUM) {
2948                         iwl4965_txstatus_to_ieee(priv,
2949                                         &(txq->txb[txq->q.read_ptr]));
2950                         iwl4965_hw_txq_free_tfd(priv, txq);
2951                 } else if (nfreed > 1) {
2952                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2953                                         q->write_ptr, q->read_ptr);
2954                         queue_work(priv->workqueue, &priv->restart);
2955                 }
2956                 nfreed++;
2957         }
2958
2959 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2960                         (txq_id != IWL_CMD_QUEUE_NUM) &&
2961                         priv->mac80211_registered)
2962                 ieee80211_wake_queue(priv->hw, txq_id); */
2963
2964
2965         return nfreed;
2966 }
2967
2968 static int iwl4965_is_tx_success(u32 status)
2969 {
2970         status &= TX_STATUS_MSK;
2971         return (status == TX_STATUS_SUCCESS)
2972             || (status == TX_STATUS_DIRECT_DONE);
2973 }
2974
2975 /******************************************************************************
2976  *
2977  * Generic RX handler implementations
2978  *
2979  ******************************************************************************/
2980 #ifdef CONFIG_IWL4965_HT
2981
2982 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2983                                     struct ieee80211_hdr *hdr)
2984 {
2985         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2986                 return IWL_AP_ID;
2987         else {
2988                 u8 *da = ieee80211_get_DA(hdr);
2989                 return iwl4965_hw_find_station(priv, da);
2990         }
2991 }
2992
2993 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2994         struct iwl_priv *priv, int txq_id, int idx)
2995 {
2996         if (priv->txq[txq_id].txb[idx].skb[0])
2997                 return (struct ieee80211_hdr *)priv->txq[txq_id].
2998                                 txb[idx].skb[0]->data;
2999         return NULL;
3000 }
3001
3002 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3003 {
3004         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3005                                 tx_resp->frame_count);
3006         return le32_to_cpu(*scd_ssn) & MAX_SN;
3007
3008 }
3009
3010 /**
3011  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3012  */
3013 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3014                                       struct iwl4965_ht_agg *agg,
3015                                       struct iwl4965_tx_resp_agg *tx_resp,
3016                                       u16 start_idx)
3017 {
3018         u16 status;
3019         struct agg_tx_status *frame_status = &tx_resp->status;
3020         struct ieee80211_tx_status *tx_status = NULL;
3021         struct ieee80211_hdr *hdr = NULL;
3022         int i, sh;
3023         int txq_id, idx;
3024         u16 seq;
3025
3026         if (agg->wait_for_ba)
3027                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3028
3029         agg->frame_count = tx_resp->frame_count;
3030         agg->start_idx = start_idx;
3031         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3032         agg->bitmap = 0;
3033
3034         /* # frames attempted by Tx command */
3035         if (agg->frame_count == 1) {
3036                 /* Only one frame was attempted; no block-ack will arrive */
3037                 status = le16_to_cpu(frame_status[0].status);
3038                 seq  = le16_to_cpu(frame_status[0].sequence);
3039                 idx = SEQ_TO_INDEX(seq);
3040                 txq_id = SEQ_TO_QUEUE(seq);
3041
3042                 /* FIXME: code repetition */
3043                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3044                                    agg->frame_count, agg->start_idx, idx);
3045
3046                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3047                 tx_status->retry_count = tx_resp->failure_frame;
3048                 tx_status->queue_number = status & 0xff;
3049                 tx_status->queue_length = tx_resp->failure_rts;
3050                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3051                 tx_status->flags = iwl4965_is_tx_success(status)?
3052                         IEEE80211_TX_STATUS_ACK : 0;
3053                 iwl4965_hwrate_to_tx_control(priv,
3054                                              le32_to_cpu(tx_resp->rate_n_flags),
3055                                              &tx_status->control);
3056                 /* FIXME: code repetition end */
3057
3058                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3059                                     status & 0xff, tx_resp->failure_frame);
3060                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3061                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3062
3063                 agg->wait_for_ba = 0;
3064         } else {
3065                 /* Two or more frames were attempted; expect block-ack */
3066                 u64 bitmap = 0;
3067                 int start = agg->start_idx;
3068
3069                 /* Construct bit-map of pending frames within Tx window */
3070                 for (i = 0; i < agg->frame_count; i++) {
3071                         u16 sc;
3072                         status = le16_to_cpu(frame_status[i].status);
3073                         seq  = le16_to_cpu(frame_status[i].sequence);
3074                         idx = SEQ_TO_INDEX(seq);
3075                         txq_id = SEQ_TO_QUEUE(seq);
3076
3077                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3078                                       AGG_TX_STATE_ABORT_MSK))
3079                                 continue;
3080
3081                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3082                                            agg->frame_count, txq_id, idx);
3083
3084                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3085
3086                         sc = le16_to_cpu(hdr->seq_ctrl);
3087                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3088                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3089                                           " idx=%d, seq_idx=%d, seq=%d\n",
3090                                           idx, SEQ_TO_SN(sc),
3091                                           hdr->seq_ctrl);
3092                                 return -1;
3093                         }
3094
3095                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3096                                            i, idx, SEQ_TO_SN(sc));
3097
3098                         sh = idx - start;
3099                         if (sh > 64) {
3100                                 sh = (start - idx) + 0xff;
3101                                 bitmap = bitmap << sh;
3102                                 sh = 0;
3103                                 start = idx;
3104                         } else if (sh < -64)
3105                                 sh  = 0xff - (start - idx);
3106                         else if (sh < 0) {
3107                                 sh = start - idx;
3108                                 start = idx;
3109                                 bitmap = bitmap << sh;
3110                                 sh = 0;
3111                         }
3112                         bitmap |= (1 << sh);
3113                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3114                                            start, (u32)(bitmap & 0xFFFFFFFF));
3115                 }
3116
3117                 agg->bitmap = bitmap;
3118                 agg->start_idx = start;
3119                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3120                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3121                                    agg->frame_count, agg->start_idx,
3122                                    agg->bitmap);
3123
3124                 if (bitmap)
3125                         agg->wait_for_ba = 1;
3126         }
3127         return 0;
3128 }
3129 #endif
3130
3131 /**
3132  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3133  */
3134 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3135                             struct iwl4965_rx_mem_buffer *rxb)
3136 {
3137         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3138         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3139         int txq_id = SEQ_TO_QUEUE(sequence);
3140         int index = SEQ_TO_INDEX(sequence);
3141         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3142         struct ieee80211_tx_status *tx_status;
3143         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3144         u32  status = le32_to_cpu(tx_resp->status);
3145 #ifdef CONFIG_IWL4965_HT
3146         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3147         struct ieee80211_hdr *hdr;
3148         __le16 *qc;
3149 #endif
3150
3151         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3152                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3153                           "is out of range [0-%d] %d %d\n", txq_id,
3154                           index, txq->q.n_bd, txq->q.write_ptr,
3155                           txq->q.read_ptr);
3156                 return;
3157         }
3158
3159 #ifdef CONFIG_IWL4965_HT
3160         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3161         qc = ieee80211_get_qos_ctrl(hdr);
3162
3163         if (qc)
3164                 tid = le16_to_cpu(*qc) & 0xf;
3165
3166         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3167         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3168                 IWL_ERROR("Station not known\n");
3169                 return;
3170         }
3171
3172         if (txq->sched_retry) {
3173                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3174                 struct iwl4965_ht_agg *agg = NULL;
3175
3176                 if (!qc)
3177                         return;
3178
3179                 agg = &priv->stations[sta_id].tid[tid].agg;
3180
3181                 iwl4965_tx_status_reply_tx(priv, agg,
3182                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3183
3184                 if ((tx_resp->frame_count == 1) &&
3185                     !iwl4965_is_tx_success(status)) {
3186                         /* TODO: send BAR */
3187                 }
3188
3189                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3190                         int freed;
3191                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3192                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3193                                            "%d index %d\n", scd_ssn , index);
3194                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3195                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3196
3197                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3198                             txq_id >= 0 && priv->mac80211_registered &&
3199                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3200                                 ieee80211_wake_queue(priv->hw, txq_id);
3201
3202                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3203                 }
3204         } else {
3205 #endif /* CONFIG_IWL4965_HT */
3206         tx_status = &(txq->txb[txq->q.read_ptr].status);
3207
3208         tx_status->retry_count = tx_resp->failure_frame;
3209         tx_status->queue_number = status;
3210         tx_status->queue_length = tx_resp->bt_kill_count;
3211         tx_status->queue_length |= tx_resp->failure_rts;
3212         tx_status->flags =
3213             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3214         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3215                                      &tx_status->control);
3216
3217         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3218                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3219                      status, le32_to_cpu(tx_resp->rate_n_flags),
3220                      tx_resp->failure_frame);
3221
3222         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3223         if (index != -1) {
3224                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3225 #ifdef CONFIG_IWL4965_HT
3226                 if (tid != MAX_TID_COUNT)
3227                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3228                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3229                         (txq_id >= 0) &&
3230                         priv->mac80211_registered)
3231                         ieee80211_wake_queue(priv->hw, txq_id);
3232                 if (tid != MAX_TID_COUNT)
3233                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3234 #endif
3235         }
3236 #ifdef CONFIG_IWL4965_HT
3237         }
3238 #endif /* CONFIG_IWL4965_HT */
3239
3240         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3241                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3242 }
3243
3244
3245 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3246                                struct iwl4965_rx_mem_buffer *rxb)
3247 {
3248         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3249         struct iwl4965_alive_resp *palive;
3250         struct delayed_work *pwork;
3251
3252         palive = &pkt->u.alive_frame;
3253
3254         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3255                        "0x%01X 0x%01X\n",
3256                        palive->is_valid, palive->ver_type,
3257                        palive->ver_subtype);
3258
3259         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3260                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3261                 memcpy(&priv->card_alive_init,
3262                        &pkt->u.alive_frame,
3263                        sizeof(struct iwl4965_init_alive_resp));
3264                 pwork = &priv->init_alive_start;
3265         } else {
3266                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3267                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3268                        sizeof(struct iwl4965_alive_resp));
3269                 pwork = &priv->alive_start;
3270         }
3271
3272         /* We delay the ALIVE response by 5ms to
3273          * give the HW RF Kill time to activate... */
3274         if (palive->is_valid == UCODE_VALID_OK)
3275                 queue_delayed_work(priv->workqueue, pwork,
3276                                    msecs_to_jiffies(5));
3277         else
3278                 IWL_WARNING("uCode did not respond OK.\n");
3279 }
3280
3281 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3282                                  struct iwl4965_rx_mem_buffer *rxb)
3283 {
3284         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3285
3286         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3287         return;
3288 }
3289
3290 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3291                                struct iwl4965_rx_mem_buffer *rxb)
3292 {
3293         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3294
3295         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3296                 "seq 0x%04X ser 0x%08X\n",
3297                 le32_to_cpu(pkt->u.err_resp.error_type),
3298                 get_cmd_string(pkt->u.err_resp.cmd_id),
3299                 pkt->u.err_resp.cmd_id,
3300                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3301                 le32_to_cpu(pkt->u.err_resp.error_info));
3302 }
3303
3304 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3305
3306 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3307 {
3308         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3309         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3310         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3311         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3312                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3313         rxon->channel = csa->channel;
3314         priv->staging_rxon.channel = csa->channel;
3315 }
3316
3317 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3318                                           struct iwl4965_rx_mem_buffer *rxb)
3319 {
3320 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3321         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3322         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3323
3324         if (!report->state) {
3325                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3326                           "Spectrum Measure Notification: Start\n");
3327                 return;
3328         }
3329
3330         memcpy(&priv->measure_report, report, sizeof(*report));
3331         priv->measurement_status |= MEASUREMENT_READY;
3332 #endif
3333 }
3334
3335 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3336                                   struct iwl4965_rx_mem_buffer *rxb)
3337 {
3338 #ifdef CONFIG_IWLWIFI_DEBUG
3339         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3340         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3341         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3342                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3343 #endif
3344 }
3345
3346 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3347                                              struct iwl4965_rx_mem_buffer *rxb)
3348 {
3349         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3350         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3351                         "notification for %s:\n",
3352                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3353         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3354 }
3355
3356 static void iwl4965_bg_beacon_update(struct work_struct *work)
3357 {
3358         struct iwl_priv *priv =
3359                 container_of(work, struct iwl_priv, beacon_update);
3360         struct sk_buff *beacon;
3361
3362         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3363         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3364
3365         if (!beacon) {
3366                 IWL_ERROR("update beacon failed\n");
3367                 return;
3368         }
3369
3370         mutex_lock(&priv->mutex);
3371         /* new beacon skb is allocated every time; dispose previous.*/
3372         if (priv->ibss_beacon)
3373                 dev_kfree_skb(priv->ibss_beacon);
3374
3375         priv->ibss_beacon = beacon;
3376         mutex_unlock(&priv->mutex);
3377
3378         iwl4965_send_beacon_cmd(priv);
3379 }
3380
3381 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3382                                 struct iwl4965_rx_mem_buffer *rxb)
3383 {
3384 #ifdef CONFIG_IWLWIFI_DEBUG
3385         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3386         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3387         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3388
3389         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3390                 "tsf %d %d rate %d\n",
3391                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3392                 beacon->beacon_notify_hdr.failure_frame,
3393                 le32_to_cpu(beacon->ibss_mgr_status),
3394                 le32_to_cpu(beacon->high_tsf),
3395                 le32_to_cpu(beacon->low_tsf), rate);
3396 #endif
3397
3398         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3399             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3400                 queue_work(priv->workqueue, &priv->beacon_update);
3401 }
3402
3403 /* Service response to REPLY_SCAN_CMD (0x80) */
3404 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3405                               struct iwl4965_rx_mem_buffer *rxb)
3406 {
3407 #ifdef CONFIG_IWLWIFI_DEBUG
3408         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3409         struct iwl4965_scanreq_notification *notif =
3410             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3411
3412         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3413 #endif
3414 }
3415
3416 /* Service SCAN_START_NOTIFICATION (0x82) */
3417 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3418                                     struct iwl4965_rx_mem_buffer *rxb)
3419 {
3420         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3421         struct iwl4965_scanstart_notification *notif =
3422             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3423         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3424         IWL_DEBUG_SCAN("Scan start: "
3425                        "%d [802.11%s] "
3426                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3427                        notif->channel,
3428                        notif->band ? "bg" : "a",
3429                        notif->tsf_high,
3430                        notif->tsf_low, notif->status, notif->beacon_timer);
3431 }
3432
3433 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3434 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3435                                       struct iwl4965_rx_mem_buffer *rxb)
3436 {
3437         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3438         struct iwl4965_scanresults_notification *notif =
3439             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3440
3441         IWL_DEBUG_SCAN("Scan ch.res: "
3442                        "%d [802.11%s] "
3443                        "(TSF: 0x%08X:%08X) - %d "
3444                        "elapsed=%lu usec (%dms since last)\n",
3445                        notif->channel,
3446                        notif->band ? "bg" : "a",
3447                        le32_to_cpu(notif->tsf_high),
3448                        le32_to_cpu(notif->tsf_low),
3449                        le32_to_cpu(notif->statistics[0]),
3450                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3451                        jiffies_to_msecs(elapsed_jiffies
3452                                         (priv->last_scan_jiffies, jiffies)));
3453
3454         priv->last_scan_jiffies = jiffies;
3455         priv->next_scan_jiffies = 0;
3456 }
3457
3458 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3459 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3460                                        struct iwl4965_rx_mem_buffer *rxb)
3461 {
3462         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3463         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3464
3465         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3466                        scan_notif->scanned_channels,
3467                        scan_notif->tsf_low,
3468                        scan_notif->tsf_high, scan_notif->status);
3469
3470         /* The HW is no longer scanning */
3471         clear_bit(STATUS_SCAN_HW, &priv->status);
3472
3473         /* The scan completion notification came in, so kill that timer... */
3474         cancel_delayed_work(&priv->scan_check);
3475
3476         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3477                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3478                        jiffies_to_msecs(elapsed_jiffies
3479                                         (priv->scan_pass_start, jiffies)));
3480
3481         /* Remove this scanned band from the list
3482          * of pending bands to scan */
3483         priv->scan_bands--;
3484
3485         /* If a request to abort was given, or the scan did not succeed
3486          * then we reset the scan state machine and terminate,
3487          * re-queuing another scan if one has been requested */
3488         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3489                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3490                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3491         } else {
3492                 /* If there are more bands on this scan pass reschedule */
3493                 if (priv->scan_bands > 0)
3494                         goto reschedule;
3495         }
3496
3497         priv->last_scan_jiffies = jiffies;
3498         priv->next_scan_jiffies = 0;
3499         IWL_DEBUG_INFO("Setting scan to off\n");
3500
3501         clear_bit(STATUS_SCANNING, &priv->status);
3502
3503         IWL_DEBUG_INFO("Scan took %dms\n",
3504                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3505
3506         queue_work(priv->workqueue, &priv->scan_completed);
3507
3508         return;
3509
3510 reschedule:
3511         priv->scan_pass_start = jiffies;
3512         queue_work(priv->workqueue, &priv->request_scan);
3513 }
3514
3515 /* Handle notification from uCode that card's power state is changing
3516  * due to software, hardware, or critical temperature RFKILL */
3517 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3518                                     struct iwl4965_rx_mem_buffer *rxb)
3519 {
3520         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3521         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3522         unsigned long status = priv->status;
3523
3524         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3525                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3526                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3527
3528         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3529                      RF_CARD_DISABLED)) {
3530
3531                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3532                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3533
3534                 if (!iwl_grab_nic_access(priv)) {
3535                         iwl_write_direct32(
3536                                 priv, HBUS_TARG_MBX_C,
3537                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3538
3539                         iwl_release_nic_access(priv);
3540                 }
3541
3542                 if (!(flags & RXON_CARD_DISABLED)) {
3543                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3544                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3545                         if (!iwl_grab_nic_access(priv)) {
3546                                 iwl_write_direct32(
3547                                         priv, HBUS_TARG_MBX_C,
3548                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3549
3550                                 iwl_release_nic_access(priv);
3551                         }
3552                 }
3553
3554                 if (flags & RF_CARD_DISABLED) {
3555                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3556                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3557                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
3558                         if (!iwl_grab_nic_access(priv))
3559                                 iwl_release_nic_access(priv);
3560                 }
3561         }
3562
3563         if (flags & HW_CARD_DISABLED)
3564                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3565         else
3566                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3567
3568
3569         if (flags & SW_CARD_DISABLED)
3570                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3571         else
3572                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3573
3574         if (!(flags & RXON_CARD_DISABLED))
3575                 iwl4965_scan_cancel(priv);
3576
3577         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3578              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3579             (test_bit(STATUS_RF_KILL_SW, &status) !=
3580              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3581                 queue_work(priv->workqueue, &priv->rf_kill);
3582         else
3583                 wake_up_interruptible(&priv->wait_command_queue);
3584 }
3585
3586 /**
3587  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3588  *
3589  * Setup the RX handlers for each of the reply types sent from the uCode
3590  * to the host.
3591  *
3592  * This function chains into the hardware specific files for them to setup
3593  * any hardware specific handlers as well.
3594  */
3595 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3596 {
3597         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3598         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3599         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3600         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3601         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3602             iwl4965_rx_spectrum_measure_notif;
3603         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3604         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3605             iwl4965_rx_pm_debug_statistics_notif;
3606         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3607
3608         /*
3609          * The same handler is used for both the REPLY to a discrete
3610          * statistics request from the host as well as for the periodic
3611          * statistics notifications (after received beacons) from the uCode.
3612          */
3613         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3614         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3615
3616         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3617         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3618         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3619             iwl4965_rx_scan_results_notif;
3620         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3621             iwl4965_rx_scan_complete_notif;
3622         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3623         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3624
3625         /* Set up hardware specific Rx handlers */
3626         iwl4965_hw_rx_handler_setup(priv);
3627 }
3628
3629 /**
3630  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3631  * @rxb: Rx buffer to reclaim
3632  *
3633  * If an Rx buffer has an async callback associated with it the callback
3634  * will be executed.  The attached skb (if present) will only be freed
3635  * if the callback returns 1
3636  */
3637 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3638                                 struct iwl4965_rx_mem_buffer *rxb)
3639 {
3640         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3641         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3642         int txq_id = SEQ_TO_QUEUE(sequence);
3643         int index = SEQ_TO_INDEX(sequence);
3644         int huge = sequence & SEQ_HUGE_FRAME;
3645         int cmd_index;
3646         struct iwl_cmd *cmd;
3647
3648         /* If a Tx command is being handled and it isn't in the actual
3649          * command queue then there a command routing bug has been introduced
3650          * in the queue management code. */
3651         if (txq_id != IWL_CMD_QUEUE_NUM)
3652                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3653                           txq_id, pkt->hdr.cmd);
3654         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3655
3656         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3657         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3658
3659         /* Input error checking is done when commands are added to queue. */
3660         if (cmd->meta.flags & CMD_WANT_SKB) {
3661                 cmd->meta.source->u.skb = rxb->skb;
3662                 rxb->skb = NULL;
3663         } else if (cmd->meta.u.callback &&
3664                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3665                 rxb->skb = NULL;
3666
3667         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3668
3669         if (!(cmd->meta.flags & CMD_ASYNC)) {
3670                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3671                 wake_up_interruptible(&priv->wait_command_queue);
3672         }
3673 }
3674
3675 /************************** RX-FUNCTIONS ****************************/
3676 /*
3677  * Rx theory of operation
3678  *
3679  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3680  * each of which point to Receive Buffers to be filled by 4965.  These get
3681  * used not only for Rx frames, but for any command response or notification
3682  * from the 4965.  The driver and 4965 manage the Rx buffers by means
3683  * of indexes into the circular buffer.
3684  *
3685  * Rx Queue Indexes
3686  * The host/firmware share two index registers for managing the Rx buffers.
3687  *
3688  * The READ index maps to the first position that the firmware may be writing
3689  * to -- the driver can read up to (but not including) this position and get
3690  * good data.
3691  * The READ index is managed by the firmware once the card is enabled.
3692  *
3693  * The WRITE index maps to the last position the driver has read from -- the
3694  * position preceding WRITE is the last slot the firmware can place a packet.
3695  *
3696  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3697  * WRITE = READ.
3698  *
3699  * During initialization, the host sets up the READ queue position to the first
3700  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3701  *
3702  * When the firmware places a packet in a buffer, it will advance the READ index
3703  * and fire the RX interrupt.  The driver can then query the READ index and
3704  * process as many packets as possible, moving the WRITE index forward as it
3705  * resets the Rx queue buffers with new memory.
3706  *
3707  * The management in the driver is as follows:
3708  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3709  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3710  *   to replenish the iwl->rxq->rx_free.
3711  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3712  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3713  *   'processed' and 'read' driver indexes as well)
3714  * + A received packet is processed and handed to the kernel network stack,
3715  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3716  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3717  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3718  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3719  *   were enough free buffers and RX_STALLED is set it is cleared.
3720  *
3721  *
3722  * Driver sequence:
3723  *
3724  * iwl4965_rx_queue_alloc()   Allocates rx_free
3725  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3726  *                            iwl4965_rx_queue_restock
3727  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3728  *                            queue, updates firmware pointers, and updates
3729  *                            the WRITE index.  If insufficient rx_free buffers
3730  *                            are available, schedules iwl4965_rx_replenish
3731  *
3732  * -- enable interrupts --
3733  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
3734  *                            READ INDEX, detaching the SKB from the pool.
3735  *                            Moves the packet buffer from queue to rx_used.
3736  *                            Calls iwl4965_rx_queue_restock to refill any empty
3737  *                            slots.
3738  * ...
3739  *
3740  */
3741
3742 /**
3743  * iwl4965_rx_queue_space - Return number of free slots available in queue.
3744  */
3745 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3746 {
3747         int s = q->read - q->write;
3748         if (s <= 0)
3749                 s += RX_QUEUE_SIZE;
3750         /* keep some buffer to not confuse full and empty queue */
3751         s -= 2;
3752         if (s < 0)
3753                 s = 0;
3754         return s;
3755 }
3756
3757 /**
3758  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3759  */
3760 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3761 {
3762         u32 reg = 0;
3763         int rc = 0;
3764         unsigned long flags;
3765
3766         spin_lock_irqsave(&q->lock, flags);
3767
3768         if (q->need_update == 0)
3769                 goto exit_unlock;
3770
3771         /* If power-saving is in use, make sure device is awake */
3772         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3773                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3774
3775                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3776                         iwl_set_bit(priv, CSR_GP_CNTRL,
3777                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3778                         goto exit_unlock;
3779                 }
3780
3781                 rc = iwl_grab_nic_access(priv);
3782                 if (rc)
3783                         goto exit_unlock;
3784
3785                 /* Device expects a multiple of 8 */
3786                 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3787                                      q->write & ~0x7);
3788                 iwl_release_nic_access(priv);
3789
3790         /* Else device is assumed to be awake */
3791         } else
3792                 /* Device expects a multiple of 8 */
3793                 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3794
3795
3796         q->need_update = 0;
3797
3798  exit_unlock:
3799         spin_unlock_irqrestore(&q->lock, flags);
3800         return rc;
3801 }
3802
3803 /**
3804  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3805  */
3806 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3807                                           dma_addr_t dma_addr)
3808 {
3809         return cpu_to_le32((u32)(dma_addr >> 8));
3810 }
3811
3812
3813 /**
3814  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3815  *
3816  * If there are slots in the RX queue that need to be restocked,
3817  * and we have free pre-allocated buffers, fill the ranks as much
3818  * as we can, pulling from rx_free.
3819  *
3820  * This moves the 'write' index forward to catch up with 'processed', and
3821  * also updates the memory address in the firmware to reference the new
3822  * target buffer.
3823  */
3824 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3825 {
3826         struct iwl4965_rx_queue *rxq = &priv->rxq;
3827         struct list_head *element;
3828         struct iwl4965_rx_mem_buffer *rxb;
3829         unsigned long flags;
3830         int write, rc;
3831
3832         spin_lock_irqsave(&rxq->lock, flags);
3833         write = rxq->write & ~0x7;
3834         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3835                 /* Get next free Rx buffer, remove from free list */
3836                 element = rxq->rx_free.next;
3837                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3838                 list_del(element);
3839
3840                 /* Point to Rx buffer via next RBD in circular buffer */
3841                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3842                 rxq->queue[rxq->write] = rxb;
3843                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3844                 rxq->free_count--;
3845         }
3846         spin_unlock_irqrestore(&rxq->lock, flags);
3847         /* If the pre-allocated buffer pool is dropping low, schedule to
3848          * refill it */
3849         if (rxq->free_count <= RX_LOW_WATERMARK)
3850                 queue_work(priv->workqueue, &priv->rx_replenish);
3851
3852
3853         /* If we've added more space for the firmware to place data, tell it.
3854          * Increment device's write pointer in multiples of 8. */
3855         if ((write != (rxq->write & ~0x7))
3856             || (abs(rxq->write - rxq->read) > 7)) {
3857                 spin_lock_irqsave(&rxq->lock, flags);
3858                 rxq->need_update = 1;
3859                 spin_unlock_irqrestore(&rxq->lock, flags);
3860                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3861                 if (rc)
3862                         return rc;
3863         }
3864
3865         return 0;
3866 }
3867
3868 /**
3869  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3870  *
3871  * When moving to rx_free an SKB is allocated for the slot.
3872  *
3873  * Also restock the Rx queue via iwl4965_rx_queue_restock.
3874  * This is called as a scheduled work item (except for during initialization)
3875  */
3876 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3877 {
3878         struct iwl4965_rx_queue *rxq = &priv->rxq;
3879         struct list_head *element;
3880         struct iwl4965_rx_mem_buffer *rxb;
3881         unsigned long flags;
3882         spin_lock_irqsave(&rxq->lock, flags);
3883         while (!list_empty(&rxq->rx_used)) {
3884                 element = rxq->rx_used.next;
3885                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3886
3887                 /* Alloc a new receive buffer */
3888                 rxb->skb =
3889                     alloc_skb(priv->hw_setting.rx_buf_size,
3890                                 __GFP_NOWARN | GFP_ATOMIC);
3891                 if (!rxb->skb) {
3892                         if (net_ratelimit())
3893                                 printk(KERN_CRIT DRV_NAME
3894                                        ": Can not allocate SKB buffers\n");
3895                         /* We don't reschedule replenish work here -- we will
3896                          * call the restock method and if it still needs
3897                          * more buffers it will schedule replenish */
3898                         break;
3899                 }
3900                 priv->alloc_rxb_skb++;
3901                 list_del(element);
3902
3903                 /* Get physical address of RB/SKB */
3904                 rxb->dma_addr =
3905                     pci_map_single(priv->pci_dev, rxb->skb->data,
3906                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
3907                 list_add_tail(&rxb->list, &rxq->rx_free);
3908                 rxq->free_count++;
3909         }
3910         spin_unlock_irqrestore(&rxq->lock, flags);
3911 }
3912
3913 /*
3914  * this should be called while priv->lock is locked
3915 */
3916 static void __iwl4965_rx_replenish(void *data)
3917 {
3918         struct iwl_priv *priv = data;
3919
3920         iwl4965_rx_allocate(priv);
3921         iwl4965_rx_queue_restock(priv);
3922 }
3923
3924
3925 void iwl4965_rx_replenish(void *data)
3926 {
3927         struct iwl_priv *priv = data;
3928         unsigned long flags;
3929
3930         iwl4965_rx_allocate(priv);
3931
3932         spin_lock_irqsave(&priv->lock, flags);
3933         iwl4965_rx_queue_restock(priv);
3934         spin_unlock_irqrestore(&priv->lock, flags);
3935 }
3936
3937 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3938  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3939  * This free routine walks the list of POOL entries and if SKB is set to
3940  * non NULL it is unmapped and freed
3941  */
3942 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3943 {
3944         int i;
3945         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3946                 if (rxq->pool[i].skb != NULL) {
3947                         pci_unmap_single(priv->pci_dev,
3948                                          rxq->pool[i].dma_addr,
3949                                          priv->hw_setting.rx_buf_size,
3950                                          PCI_DMA_FROMDEVICE);
3951                         dev_kfree_skb(rxq->pool[i].skb);
3952                 }
3953         }
3954
3955         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3956                             rxq->dma_addr);
3957         rxq->bd = NULL;
3958 }
3959
3960 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3961 {
3962         struct iwl4965_rx_queue *rxq = &priv->rxq;
3963         struct pci_dev *dev = priv->pci_dev;
3964         int i;
3965
3966         spin_lock_init(&rxq->lock);
3967         INIT_LIST_HEAD(&rxq->rx_free);
3968         INIT_LIST_HEAD(&rxq->rx_used);
3969
3970         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3971         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3972         if (!rxq->bd)
3973                 return -ENOMEM;
3974
3975         /* Fill the rx_used queue with _all_ of the Rx buffers */
3976         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3977                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3978
3979         /* Set us so that we have processed and used all buffers, but have
3980          * not restocked the Rx queue with fresh buffers */
3981         rxq->read = rxq->write = 0;
3982         rxq->free_count = 0;
3983         rxq->need_update = 0;
3984         return 0;
3985 }
3986
3987 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3988 {
3989         unsigned long flags;
3990         int i;
3991         spin_lock_irqsave(&rxq->lock, flags);
3992         INIT_LIST_HEAD(&rxq->rx_free);
3993         INIT_LIST_HEAD(&rxq->rx_used);
3994         /* Fill the rx_used queue with _all_ of the Rx buffers */
3995         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3996                 /* In the reset function, these buffers may have been allocated
3997                  * to an SKB, so we need to unmap and free potential storage */
3998                 if (rxq->pool[i].skb != NULL) {
3999                         pci_unmap_single(priv->pci_dev,
4000                                          rxq->pool[i].dma_addr,
4001                                          priv->hw_setting.rx_buf_size,
4002                                          PCI_DMA_FROMDEVICE);
4003                         priv->alloc_rxb_skb--;
4004                         dev_kfree_skb(rxq->pool[i].skb);
4005                         rxq->pool[i].skb = NULL;
4006                 }
4007                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4008         }
4009
4010         /* Set us so that we have processed and used all buffers, but have
4011          * not restocked the Rx queue with fresh buffers */
4012         rxq->read = rxq->write = 0;
4013         rxq->free_count = 0;
4014         spin_unlock_irqrestore(&rxq->lock, flags);
4015 }
4016
4017 /* Convert linear signal-to-noise ratio into dB */
4018 static u8 ratio2dB[100] = {
4019 /*       0   1   2   3   4   5   6   7   8   9 */
4020          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4021         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4022         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4023         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4024         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4025         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4026         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4027         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4028         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4029         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4030 };
4031
4032 /* Calculates a relative dB value from a ratio of linear
4033  *   (i.e. not dB) signal levels.
4034  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4035 int iwl4965_calc_db_from_ratio(int sig_ratio)
4036 {
4037         /* 1000:1 or higher just report as 60 dB */
4038         if (sig_ratio >= 1000)
4039                 return 60;
4040
4041         /* 100:1 or higher, divide by 10 and use table,
4042          *   add 20 dB to make up for divide by 10 */
4043         if (sig_ratio >= 100)
4044                 return (20 + (int)ratio2dB[sig_ratio/10]);
4045
4046         /* We shouldn't see this */
4047         if (sig_ratio < 1)
4048                 return 0;
4049
4050         /* Use table for ratios 1:1 - 99:1 */
4051         return (int)ratio2dB[sig_ratio];
4052 }
4053
4054 #define PERFECT_RSSI (-20) /* dBm */
4055 #define WORST_RSSI (-95)   /* dBm */
4056 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4057
4058 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4059  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4060  *   about formulas used below. */
4061 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4062 {
4063         int sig_qual;
4064         int degradation = PERFECT_RSSI - rssi_dbm;
4065
4066         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4067          * as indicator; formula is (signal dbm - noise dbm).
4068          * SNR at or above 40 is a great signal (100%).
4069          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4070          * Weakest usable signal is usually 10 - 15 dB SNR. */
4071         if (noise_dbm) {
4072                 if (rssi_dbm - noise_dbm >= 40)
4073                         return 100;
4074                 else if (rssi_dbm < noise_dbm)
4075                         return 0;
4076                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4077
4078         /* Else use just the signal level.
4079          * This formula is a least squares fit of data points collected and
4080          *   compared with a reference system that had a percentage (%) display
4081          *   for signal quality. */
4082         } else
4083                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4084                             (15 * RSSI_RANGE + 62 * degradation)) /
4085                            (RSSI_RANGE * RSSI_RANGE);
4086
4087         if (sig_qual > 100)
4088                 sig_qual = 100;
4089         else if (sig_qual < 1)
4090                 sig_qual = 0;
4091
4092         return sig_qual;
4093 }
4094
4095 /**
4096  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4097  *
4098  * Uses the priv->rx_handlers callback function array to invoke
4099  * the appropriate handlers, including command responses,
4100  * frame-received notifications, and other notifications.
4101  */
4102 static void iwl4965_rx_handle(struct iwl_priv *priv)
4103 {
4104         struct iwl4965_rx_mem_buffer *rxb;
4105         struct iwl4965_rx_packet *pkt;
4106         struct iwl4965_rx_queue *rxq = &priv->rxq;
4107         u32 r, i;
4108         int reclaim;
4109         unsigned long flags;
4110         u8 fill_rx = 0;
4111         u32 count = 8;
4112
4113         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4114          * buffer that the driver may process (last buffer filled by ucode). */
4115         r = iwl4965_hw_get_rx_read(priv);
4116         i = rxq->read;
4117
4118         /* Rx interrupt, but nothing sent from uCode */
4119         if (i == r)
4120                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4121
4122         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4123                 fill_rx = 1;
4124
4125         while (i != r) {
4126                 rxb = rxq->queue[i];
4127
4128                 /* If an RXB doesn't have a Rx queue slot associated with it,
4129                  * then a bug has been introduced in the queue refilling
4130                  * routines -- catch it here */
4131                 BUG_ON(rxb == NULL);
4132
4133                 rxq->queue[i] = NULL;
4134
4135                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4136                                             priv->hw_setting.rx_buf_size,
4137                                             PCI_DMA_FROMDEVICE);
4138                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4139
4140                 /* Reclaim a command buffer only if this packet is a response
4141                  *   to a (driver-originated) command.
4142                  * If the packet (e.g. Rx frame) originated from uCode,
4143                  *   there is no command buffer to reclaim.
4144                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4145                  *   but apparently a few don't get set; catch them here. */
4146                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4147                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4148                         (pkt->hdr.cmd != REPLY_RX) &&
4149                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4150                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4151                         (pkt->hdr.cmd != REPLY_TX);
4152
4153                 /* Based on type of command response or notification,
4154                  *   handle those that need handling via function in
4155                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4156                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4157                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4158                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4159                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4160                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4161                 } else {
4162                         /* No handling needed */
4163                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4164                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4165                                 r, i, get_cmd_string(pkt->hdr.cmd),
4166                                 pkt->hdr.cmd);
4167                 }
4168
4169                 if (reclaim) {
4170                         /* Invoke any callbacks, transfer the skb to caller, and
4171                          * fire off the (possibly) blocking iwl_send_cmd()
4172                          * as we reclaim the driver command queue */
4173                         if (rxb && rxb->skb)
4174                                 iwl4965_tx_cmd_complete(priv, rxb);
4175                         else
4176                                 IWL_WARNING("Claim null rxb?\n");
4177                 }
4178
4179                 /* For now we just don't re-use anything.  We can tweak this
4180                  * later to try and re-use notification packets and SKBs that
4181                  * fail to Rx correctly */
4182                 if (rxb->skb != NULL) {
4183                         priv->alloc_rxb_skb--;
4184                         dev_kfree_skb_any(rxb->skb);
4185                         rxb->skb = NULL;
4186                 }
4187
4188                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4189                                  priv->hw_setting.rx_buf_size,
4190                                  PCI_DMA_FROMDEVICE);
4191                 spin_lock_irqsave(&rxq->lock, flags);
4192                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4193                 spin_unlock_irqrestore(&rxq->lock, flags);
4194                 i = (i + 1) & RX_QUEUE_MASK;
4195                 /* If there are a lot of unused frames,
4196                  * restock the Rx queue so ucode wont assert. */
4197                 if (fill_rx) {
4198                         count++;
4199                         if (count >= 8) {
4200                                 priv->rxq.read = i;
4201                                 __iwl4965_rx_replenish(priv);
4202                                 count = 0;
4203                         }
4204                 }
4205         }
4206
4207         /* Backtrack one entry */
4208         priv->rxq.read = i;
4209         iwl4965_rx_queue_restock(priv);
4210 }
4211
4212 /**
4213  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4214  */
4215 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4216                                   struct iwl4965_tx_queue *txq)
4217 {
4218         u32 reg = 0;
4219         int rc = 0;
4220         int txq_id = txq->q.id;
4221
4222         if (txq->need_update == 0)
4223                 return rc;
4224
4225         /* if we're trying to save power */
4226         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4227                 /* wake up nic if it's powered down ...
4228                  * uCode will wake up, and interrupt us again, so next
4229                  * time we'll skip this part. */
4230                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4231
4232                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4233                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4234                         iwl_set_bit(priv, CSR_GP_CNTRL,
4235                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4236                         return rc;
4237                 }
4238
4239                 /* restore this queue's parameters in nic hardware. */
4240                 rc = iwl_grab_nic_access(priv);
4241                 if (rc)
4242                         return rc;
4243                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
4244                                      txq->q.write_ptr | (txq_id << 8));
4245                 iwl_release_nic_access(priv);
4246
4247         /* else not in power-save mode, uCode will never sleep when we're
4248          * trying to tx (during RFKILL, we're not trying to tx). */
4249         } else
4250                 iwl_write32(priv, HBUS_TARG_WRPTR,
4251                             txq->q.write_ptr | (txq_id << 8));
4252
4253         txq->need_update = 0;
4254
4255         return rc;
4256 }
4257
4258 #ifdef CONFIG_IWLWIFI_DEBUG
4259 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4260 {
4261         DECLARE_MAC_BUF(mac);
4262
4263         IWL_DEBUG_RADIO("RX CONFIG:\n");
4264         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4265         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4266         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4267         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4268                         le32_to_cpu(rxon->filter_flags));
4269         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4270         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4271                         rxon->ofdm_basic_rates);
4272         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4273         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4274                         print_mac(mac, rxon->node_addr));
4275         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4276                         print_mac(mac, rxon->bssid_addr));
4277         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4278 }
4279 #endif
4280
4281 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4282 {
4283         IWL_DEBUG_ISR("Enabling interrupts\n");
4284         set_bit(STATUS_INT_ENABLED, &priv->status);
4285         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4286 }
4287
4288 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4289 {
4290         clear_bit(STATUS_INT_ENABLED, &priv->status);
4291
4292         /* disable interrupts from uCode/NIC to host */
4293         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4294
4295         /* acknowledge/clear/reset any interrupts still pending
4296          * from uCode or flow handler (Rx/Tx DMA) */
4297         iwl_write32(priv, CSR_INT, 0xffffffff);
4298         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4299         IWL_DEBUG_ISR("Disabled interrupts\n");
4300 }
4301
4302 static const char *desc_lookup(int i)
4303 {
4304         switch (i) {
4305         case 1:
4306                 return "FAIL";
4307         case 2:
4308                 return "BAD_PARAM";
4309         case 3:
4310                 return "BAD_CHECKSUM";
4311         case 4:
4312                 return "NMI_INTERRUPT";
4313         case 5:
4314                 return "SYSASSERT";
4315         case 6:
4316                 return "FATAL_ERROR";
4317         }
4318
4319         return "UNKNOWN";
4320 }
4321
4322 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4323 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4324
4325 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4326 {
4327         u32 data2, line;
4328         u32 desc, time, count, base, data1;
4329         u32 blink1, blink2, ilink1, ilink2;
4330         int rc;
4331
4332         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4333
4334         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4335                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4336                 return;
4337         }
4338
4339         rc = iwl_grab_nic_access(priv);
4340         if (rc) {
4341                 IWL_WARNING("Can not read from adapter at this time.\n");
4342                 return;
4343         }
4344
4345         count = iwl_read_targ_mem(priv, base);
4346
4347         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4348                 IWL_ERROR("Start IWL Error Log Dump:\n");
4349                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4350         }
4351
4352         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
4353         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
4354         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
4355         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
4356         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
4357         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
4358         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
4359         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
4360         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
4361
4362         IWL_ERROR("Desc               Time       "
4363                   "data1      data2      line\n");
4364         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4365                   desc_lookup(desc), desc, time, data1, data2, line);
4366         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4367         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4368                   ilink1, ilink2);
4369
4370         iwl_release_nic_access(priv);
4371 }
4372
4373 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4374
4375 /**
4376  * iwl4965_print_event_log - Dump error event log to syslog
4377  *
4378  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4379  */
4380 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4381                                 u32 num_events, u32 mode)
4382 {
4383         u32 i;
4384         u32 base;       /* SRAM byte address of event log header */
4385         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4386         u32 ptr;        /* SRAM byte address of log data */
4387         u32 ev, time, data; /* event log data */
4388
4389         if (num_events == 0)
4390                 return;
4391
4392         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4393
4394         if (mode == 0)
4395                 event_size = 2 * sizeof(u32);
4396         else
4397                 event_size = 3 * sizeof(u32);
4398
4399         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4400
4401         /* "time" is actually "data" for mode 0 (no timestamp).
4402          * place event id # at far right for easier visual parsing. */
4403         for (i = 0; i < num_events; i++) {
4404                 ev = iwl_read_targ_mem(priv, ptr);
4405                 ptr += sizeof(u32);
4406                 time = iwl_read_targ_mem(priv, ptr);
4407                 ptr += sizeof(u32);
4408                 if (mode == 0)
4409                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4410                 else {
4411                         data = iwl_read_targ_mem(priv, ptr);
4412                         ptr += sizeof(u32);
4413                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4414                 }
4415         }
4416 }
4417
4418 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4419 {
4420         int rc;
4421         u32 base;       /* SRAM byte address of event log header */
4422         u32 capacity;   /* event log capacity in # entries */
4423         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4424         u32 num_wraps;  /* # times uCode wrapped to top of log */
4425         u32 next_entry; /* index of next entry to be written by uCode */
4426         u32 size;       /* # entries that we'll print */
4427
4428         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4429         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4430                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4431                 return;
4432         }
4433
4434         rc = iwl_grab_nic_access(priv);
4435         if (rc) {
4436                 IWL_WARNING("Can not read from adapter at this time.\n");
4437                 return;
4438         }
4439
4440         /* event log header */
4441         capacity = iwl_read_targ_mem(priv, base);
4442         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4443         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4444         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4445
4446         size = num_wraps ? capacity : next_entry;
4447
4448         /* bail out if nothing in log */
4449         if (size == 0) {
4450                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4451                 iwl_release_nic_access(priv);
4452                 return;
4453         }
4454
4455         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4456                   size, num_wraps);
4457
4458         /* if uCode has wrapped back to top of log, start at the oldest entry,
4459          * i.e the next one that uCode would fill. */
4460         if (num_wraps)
4461                 iwl4965_print_event_log(priv, next_entry,
4462                                     capacity - next_entry, mode);
4463
4464         /* (then/else) start at top of log */
4465         iwl4965_print_event_log(priv, 0, next_entry, mode);
4466
4467         iwl_release_nic_access(priv);
4468 }
4469
4470 /**
4471  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4472  */
4473 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4474 {
4475         /* Set the FW error flag -- cleared on iwl4965_down */
4476         set_bit(STATUS_FW_ERROR, &priv->status);
4477
4478         /* Cancel currently queued command. */
4479         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4480
4481 #ifdef CONFIG_IWLWIFI_DEBUG
4482         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4483                 iwl4965_dump_nic_error_log(priv);
4484                 iwl4965_dump_nic_event_log(priv);
4485                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4486         }
4487 #endif
4488
4489         wake_up_interruptible(&priv->wait_command_queue);
4490
4491         /* Keep the restart process from trying to send host
4492          * commands by clearing the INIT status bit */
4493         clear_bit(STATUS_READY, &priv->status);
4494
4495         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4496                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4497                           "Restarting adapter due to uCode error.\n");
4498
4499                 if (iwl4965_is_associated(priv)) {
4500                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4501                                sizeof(priv->recovery_rxon));
4502                         priv->error_recovering = 1;
4503                 }
4504                 queue_work(priv->workqueue, &priv->restart);
4505         }
4506 }
4507
4508 static void iwl4965_error_recovery(struct iwl_priv *priv)
4509 {
4510         unsigned long flags;
4511
4512         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4513                sizeof(priv->staging_rxon));
4514         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4515         iwl4965_commit_rxon(priv);
4516
4517         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4518
4519         spin_lock_irqsave(&priv->lock, flags);
4520         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4521         priv->error_recovering = 0;
4522         spin_unlock_irqrestore(&priv->lock, flags);
4523 }
4524
4525 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4526 {
4527         u32 inta, handled = 0;
4528         u32 inta_fh;
4529         unsigned long flags;
4530 #ifdef CONFIG_IWLWIFI_DEBUG
4531         u32 inta_mask;
4532 #endif
4533
4534         spin_lock_irqsave(&priv->lock, flags);
4535
4536         /* Ack/clear/reset pending uCode interrupts.
4537          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4538          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4539         inta = iwl_read32(priv, CSR_INT);
4540         iwl_write32(priv, CSR_INT, inta);
4541
4542         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4543          * Any new interrupts that happen after this, either while we're
4544          * in this tasklet, or later, will show up in next ISR/tasklet. */
4545         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4546         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4547
4548 #ifdef CONFIG_IWLWIFI_DEBUG
4549         if (iwl_debug_level & IWL_DL_ISR) {
4550                 /* just for debug */
4551                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4552                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4553                               inta, inta_mask, inta_fh);
4554         }
4555 #endif
4556
4557         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4558          * atomic, make sure that inta covers all the interrupts that
4559          * we've discovered, even if FH interrupt came in just after
4560          * reading CSR_INT. */
4561         if (inta_fh & CSR49_FH_INT_RX_MASK)
4562                 inta |= CSR_INT_BIT_FH_RX;
4563         if (inta_fh & CSR49_FH_INT_TX_MASK)
4564                 inta |= CSR_INT_BIT_FH_TX;
4565
4566         /* Now service all interrupt bits discovered above. */
4567         if (inta & CSR_INT_BIT_HW_ERR) {
4568                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4569
4570                 /* Tell the device to stop sending interrupts */
4571                 iwl4965_disable_interrupts(priv);
4572
4573                 iwl4965_irq_handle_error(priv);
4574
4575                 handled |= CSR_INT_BIT_HW_ERR;
4576
4577                 spin_unlock_irqrestore(&priv->lock, flags);
4578
4579                 return;
4580         }
4581
4582 #ifdef CONFIG_IWLWIFI_DEBUG
4583         if (iwl_debug_level & (IWL_DL_ISR)) {
4584                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4585                 if (inta & CSR_INT_BIT_SCD)
4586                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4587                                       "the frame/frames.\n");
4588
4589                 /* Alive notification via Rx interrupt will do the real work */
4590                 if (inta & CSR_INT_BIT_ALIVE)
4591                         IWL_DEBUG_ISR("Alive interrupt\n");
4592         }
4593 #endif
4594         /* Safely ignore these bits for debug checks below */
4595         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4596
4597         /* HW RF KILL switch toggled */
4598         if (inta & CSR_INT_BIT_RF_KILL) {
4599                 int hw_rf_kill = 0;
4600                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4601                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4602                         hw_rf_kill = 1;
4603
4604                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4605                                 "RF_KILL bit toggled to %s.\n",
4606                                 hw_rf_kill ? "disable radio":"enable radio");
4607
4608                 /* Queue restart only if RF_KILL switch was set to "kill"
4609                  *   when we loaded driver, and is now set to "enable".
4610                  * After we're Alive, RF_KILL gets handled by
4611                  *   iwl4965_rx_card_state_notif() */
4612                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4613                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4614                         queue_work(priv->workqueue, &priv->restart);
4615                 }
4616
4617                 handled |= CSR_INT_BIT_RF_KILL;
4618         }
4619
4620         /* Chip got too hot and stopped itself */
4621         if (inta & CSR_INT_BIT_CT_KILL) {
4622                 IWL_ERROR("Microcode CT kill error detected.\n");
4623                 handled |= CSR_INT_BIT_CT_KILL;
4624         }
4625
4626         /* Error detected by uCode */
4627         if (inta & CSR_INT_BIT_SW_ERR) {
4628                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4629                           inta);
4630                 iwl4965_irq_handle_error(priv);
4631                 handled |= CSR_INT_BIT_SW_ERR;
4632         }
4633
4634         /* uCode wakes up after power-down sleep */
4635         if (inta & CSR_INT_BIT_WAKEUP) {
4636                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4637                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4638                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4639                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4640                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4641                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4642                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4643                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4644
4645                 handled |= CSR_INT_BIT_WAKEUP;
4646         }
4647
4648         /* All uCode command responses, including Tx command responses,
4649          * Rx "responses" (frame-received notification), and other
4650          * notifications from uCode come through here*/
4651         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4652                 iwl4965_rx_handle(priv);
4653                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4654         }
4655
4656         if (inta & CSR_INT_BIT_FH_TX) {
4657                 IWL_DEBUG_ISR("Tx interrupt\n");
4658                 handled |= CSR_INT_BIT_FH_TX;
4659         }
4660
4661         if (inta & ~handled)
4662                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4663
4664         if (inta & ~CSR_INI_SET_MASK) {
4665                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4666                          inta & ~CSR_INI_SET_MASK);
4667                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4668         }
4669
4670         /* Re-enable all interrupts */
4671         iwl4965_enable_interrupts(priv);
4672
4673 #ifdef CONFIG_IWLWIFI_DEBUG
4674         if (iwl_debug_level & (IWL_DL_ISR)) {
4675                 inta = iwl_read32(priv, CSR_INT);
4676                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4677                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4678                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4679                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4680         }
4681 #endif
4682         spin_unlock_irqrestore(&priv->lock, flags);
4683 }
4684
4685 static irqreturn_t iwl4965_isr(int irq, void *data)
4686 {
4687         struct iwl_priv *priv = data;
4688         u32 inta, inta_mask;
4689         u32 inta_fh;
4690         if (!priv)
4691                 return IRQ_NONE;
4692
4693         spin_lock(&priv->lock);
4694
4695         /* Disable (but don't clear!) interrupts here to avoid
4696          *    back-to-back ISRs and sporadic interrupts from our NIC.
4697          * If we have something to service, the tasklet will re-enable ints.
4698          * If we *don't* have something, we'll re-enable before leaving here. */
4699         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
4700         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4701
4702         /* Discover which interrupts are active/pending */
4703         inta = iwl_read32(priv, CSR_INT);
4704         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4705
4706         /* Ignore interrupt if there's nothing in NIC to service.
4707          * This may be due to IRQ shared with another device,
4708          * or due to sporadic interrupts thrown from our NIC. */
4709         if (!inta && !inta_fh) {
4710                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4711                 goto none;
4712         }
4713
4714         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4715                 /* Hardware disappeared. It might have already raised
4716                  * an interrupt */
4717                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4718                 goto unplugged;
4719         }
4720
4721         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4722                       inta, inta_mask, inta_fh);
4723
4724         inta &= ~CSR_INT_BIT_SCD;
4725
4726         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4727         if (likely(inta || inta_fh))
4728                 tasklet_schedule(&priv->irq_tasklet);
4729
4730  unplugged:
4731         spin_unlock(&priv->lock);
4732         return IRQ_HANDLED;
4733
4734  none:
4735         /* re-enable interrupts here since we don't have anything to service. */
4736         iwl4965_enable_interrupts(priv);
4737         spin_unlock(&priv->lock);
4738         return IRQ_NONE;
4739 }
4740
4741 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4742  * sending probe req.  This should be set long enough to hear probe responses
4743  * from more than one AP.  */
4744 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4745 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4746
4747 /* For faster active scanning, scan will move to the next channel if fewer than
4748  * PLCP_QUIET_THRESH packets are heard on this channel within
4749  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4750  * time if it's a quiet channel (nothing responded to our probe, and there's
4751  * no other traffic).
4752  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4753 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4754 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4755
4756 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4757  * Must be set longer than active dwell time.
4758  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4759 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4760 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4761 #define IWL_PASSIVE_DWELL_BASE      (100)
4762 #define IWL_CHANNEL_TUNE_TIME       5
4763
4764 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4765                                                 enum ieee80211_band band)
4766 {
4767         if (band == IEEE80211_BAND_5GHZ)
4768                 return IWL_ACTIVE_DWELL_TIME_52;
4769         else
4770                 return IWL_ACTIVE_DWELL_TIME_24;
4771 }
4772
4773 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4774                                           enum ieee80211_band band)
4775 {
4776         u16 active = iwl4965_get_active_dwell_time(priv, band);
4777         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4778             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4779             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4780
4781         if (iwl4965_is_associated(priv)) {
4782                 /* If we're associated, we clamp the maximum passive
4783                  * dwell time to be 98% of the beacon interval (minus
4784                  * 2 * channel tune time) */
4785                 passive = priv->beacon_int;
4786                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4787                         passive = IWL_PASSIVE_DWELL_BASE;
4788                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4789         }
4790
4791         if (passive <= active)
4792                 passive = active + 1;
4793
4794         return passive;
4795 }
4796
4797 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4798                                          enum ieee80211_band band,
4799                                      u8 is_active, u8 direct_mask,
4800                                      struct iwl4965_scan_channel *scan_ch)
4801 {
4802         const struct ieee80211_channel *channels = NULL;
4803         const struct ieee80211_supported_band *sband;
4804         const struct iwl_channel_info *ch_info;
4805         u16 passive_dwell = 0;
4806         u16 active_dwell = 0;
4807         int added, i;
4808
4809         sband = iwl4965_get_hw_mode(priv, band);
4810         if (!sband)
4811                 return 0;
4812
4813         channels = sband->channels;
4814
4815         active_dwell = iwl4965_get_active_dwell_time(priv, band);
4816         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4817
4818         for (i = 0, added = 0; i < sband->n_channels; i++) {
4819                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4820                     le16_to_cpu(priv->active_rxon.channel)) {
4821                         if (iwl4965_is_associated(priv)) {
4822                                 IWL_DEBUG_SCAN
4823                                     ("Skipping current channel %d\n",
4824                                      le16_to_cpu(priv->active_rxon.channel));
4825                                 continue;
4826                         }
4827                 } else if (priv->only_active_channel)
4828                         continue;
4829
4830                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4831
4832                 ch_info = iwl_get_channel_info(priv, band,
4833                                          scan_ch->channel);
4834                 if (!is_channel_valid(ch_info)) {
4835                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4836                                        scan_ch->channel);
4837                         continue;
4838                 }
4839
4840                 if (!is_active || is_channel_passive(ch_info) ||
4841                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4842                         scan_ch->type = 0;      /* passive */
4843                 else
4844                         scan_ch->type = 1;      /* active */
4845
4846                 if (scan_ch->type & 1)
4847                         scan_ch->type |= (direct_mask << 1);
4848
4849                 if (is_channel_narrow(ch_info))
4850                         scan_ch->type |= (1 << 7);
4851
4852                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4853                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4854
4855                 /* Set txpower levels to defaults */
4856                 scan_ch->tpc.dsp_atten = 110;
4857                 /* scan_pwr_info->tpc.dsp_atten; */
4858
4859                 /*scan_pwr_info->tpc.tx_gain; */
4860                 if (band == IEEE80211_BAND_5GHZ)
4861                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4862                 else {
4863                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4864                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4865                          * power level:
4866                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4867                          */
4868                 }
4869
4870                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4871                                scan_ch->channel,
4872                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4873                                (scan_ch->type & 1) ?
4874                                active_dwell : passive_dwell);
4875
4876                 scan_ch++;
4877                 added++;
4878         }
4879
4880         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4881         return added;
4882 }
4883
4884 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4885                               struct ieee80211_rate *rates)
4886 {
4887         int i;
4888
4889         for (i = 0; i < IWL_RATE_COUNT; i++) {
4890                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4891                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4892                 rates[i].hw_value_short = i;
4893                 rates[i].flags = 0;
4894                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4895                         /*
4896                          * If CCK != 1M then set short preamble rate flag.
4897                          */
4898                         rates[i].flags |=
4899                                 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4900                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4901                 }
4902         }
4903 }
4904
4905 /**
4906  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4907  */
4908 int iwl4965_init_geos(struct iwl_priv *priv)
4909 {
4910         struct iwl_channel_info *ch;
4911         struct ieee80211_supported_band *sband;
4912         struct ieee80211_channel *channels;
4913         struct ieee80211_channel *geo_ch;
4914         struct ieee80211_rate *rates;
4915         int i = 0;
4916
4917         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4918             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4919                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4920                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4921                 return 0;
4922         }
4923
4924         channels = kzalloc(sizeof(struct ieee80211_channel) *
4925                            priv->channel_count, GFP_KERNEL);
4926         if (!channels)
4927                 return -ENOMEM;
4928
4929         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4930                         GFP_KERNEL);
4931         if (!rates) {
4932                 kfree(channels);
4933                 return -ENOMEM;
4934         }
4935
4936         /* 5.2GHz channels start after the 2.4GHz channels */
4937         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4938         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4939         /* just OFDM */
4940         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4941         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4942
4943         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4944
4945         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4946         sband->channels = channels;
4947         /* OFDM & CCK */
4948         sband->bitrates = rates;
4949         sband->n_bitrates = IWL_RATE_COUNT;
4950
4951         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4952
4953         priv->ieee_channels = channels;
4954         priv->ieee_rates = rates;
4955
4956         iwl4965_init_hw_rates(priv, rates);
4957
4958         for (i = 0;  i < priv->channel_count; i++) {
4959                 ch = &priv->channel_info[i];
4960
4961                 /* FIXME: might be removed if scan is OK */
4962                 if (!is_channel_valid(ch))
4963                         continue;
4964
4965                 if (is_channel_a_band(ch))
4966                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4967                 else
4968                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4969
4970                 geo_ch = &sband->channels[sband->n_channels++];
4971
4972                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4973                 geo_ch->max_power = ch->max_power_avg;
4974                 geo_ch->max_antenna_gain = 0xff;
4975                 geo_ch->hw_value = ch->channel;
4976
4977                 if (is_channel_valid(ch)) {
4978                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4979                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4980
4981                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4982                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4983
4984                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4985                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4986
4987                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4988                                 priv->max_channel_txpower_limit =
4989                                     ch->max_power_avg;
4990                 } else {
4991                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4992                 }
4993
4994                 /* Save flags for reg domain usage */
4995                 geo_ch->orig_flags = geo_ch->flags;
4996
4997                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4998                                 ch->channel, geo_ch->center_freq,
4999                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
5000                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5001                                 "restricted" : "valid",
5002                                  geo_ch->flags);
5003         }
5004
5005         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5006              priv->cfg->sku & IWL_SKU_A) {
5007                 printk(KERN_INFO DRV_NAME
5008                        ": Incorrectly detected BG card as ABG.  Please send "
5009                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5010                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5011                 priv->cfg->sku &= ~IWL_SKU_A;
5012         }
5013
5014         printk(KERN_INFO DRV_NAME
5015                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5016                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5017                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5018
5019         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5020                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5021                         &priv->bands[IEEE80211_BAND_2GHZ];
5022         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5023                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5024                         &priv->bands[IEEE80211_BAND_5GHZ];
5025
5026         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5027
5028         return 0;
5029 }
5030
5031 /*
5032  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5033  */
5034 void iwl4965_free_geos(struct iwl_priv *priv)
5035 {
5036         kfree(priv->ieee_channels);
5037         kfree(priv->ieee_rates);
5038         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5039 }
5040
5041 /******************************************************************************
5042  *
5043  * uCode download functions
5044  *
5045  ******************************************************************************/
5046
5047 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
5048 {
5049         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5050         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5051         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5052         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5053         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5054         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5055 }
5056
5057 /**
5058  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5059  *     looking at all data.
5060  */
5061 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
5062                                  u32 len)
5063 {
5064         u32 val;
5065         u32 save_len = len;
5066         int rc = 0;
5067         u32 errcnt;
5068
5069         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5070
5071         rc = iwl_grab_nic_access(priv);
5072         if (rc)
5073                 return rc;
5074
5075         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5076
5077         errcnt = 0;
5078         for (; len > 0; len -= sizeof(u32), image++) {
5079                 /* read data comes through single port, auto-incr addr */
5080                 /* NOTE: Use the debugless read so we don't flood kernel log
5081                  * if IWL_DL_IO is set */
5082                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5083                 if (val != le32_to_cpu(*image)) {
5084                         IWL_ERROR("uCode INST section is invalid at "
5085                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5086                                   save_len - len, val, le32_to_cpu(*image));
5087                         rc = -EIO;
5088                         errcnt++;
5089                         if (errcnt >= 20)
5090                                 break;
5091                 }
5092         }
5093
5094         iwl_release_nic_access(priv);
5095
5096         if (!errcnt)
5097                 IWL_DEBUG_INFO
5098                     ("ucode image in INSTRUCTION memory is good\n");
5099
5100         return rc;
5101 }
5102
5103
5104 /**
5105  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5106  *   using sample data 100 bytes apart.  If these sample points are good,
5107  *   it's a pretty good bet that everything between them is good, too.
5108  */
5109 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5110 {
5111         u32 val;
5112         int rc = 0;
5113         u32 errcnt = 0;
5114         u32 i;
5115
5116         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5117
5118         rc = iwl_grab_nic_access(priv);
5119         if (rc)
5120                 return rc;
5121
5122         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5123                 /* read data comes through single port, auto-incr addr */
5124                 /* NOTE: Use the debugless read so we don't flood kernel log
5125                  * if IWL_DL_IO is set */
5126                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5127                         i + RTC_INST_LOWER_BOUND);
5128                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5129                 if (val != le32_to_cpu(*image)) {
5130 #if 0 /* Enable this if you want to see details */
5131                         IWL_ERROR("uCode INST section is invalid at "
5132                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5133                                   i, val, *image);
5134 #endif
5135                         rc = -EIO;
5136                         errcnt++;
5137                         if (errcnt >= 3)
5138                                 break;
5139                 }
5140         }
5141
5142         iwl_release_nic_access(priv);
5143
5144         return rc;
5145 }
5146
5147
5148 /**
5149  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5150  *    and verify its contents
5151  */
5152 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5153 {
5154         __le32 *image;
5155         u32 len;
5156         int rc = 0;
5157
5158         /* Try bootstrap */
5159         image = (__le32 *)priv->ucode_boot.v_addr;
5160         len = priv->ucode_boot.len;
5161         rc = iwl4965_verify_inst_sparse(priv, image, len);
5162         if (rc == 0) {
5163                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5164                 return 0;
5165         }
5166
5167         /* Try initialize */
5168         image = (__le32 *)priv->ucode_init.v_addr;
5169         len = priv->ucode_init.len;
5170         rc = iwl4965_verify_inst_sparse(priv, image, len);
5171         if (rc == 0) {
5172                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5173                 return 0;
5174         }
5175
5176         /* Try runtime/protocol */
5177         image = (__le32 *)priv->ucode_code.v_addr;
5178         len = priv->ucode_code.len;
5179         rc = iwl4965_verify_inst_sparse(priv, image, len);
5180         if (rc == 0) {
5181                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5182                 return 0;
5183         }
5184
5185         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5186
5187         /* Since nothing seems to match, show first several data entries in
5188          * instruction SRAM, so maybe visual inspection will give a clue.
5189          * Selection of bootstrap image (vs. other images) is arbitrary. */
5190         image = (__le32 *)priv->ucode_boot.v_addr;
5191         len = priv->ucode_boot.len;
5192         rc = iwl4965_verify_inst_full(priv, image, len);
5193
5194         return rc;
5195 }
5196
5197
5198 /* check contents of special bootstrap uCode SRAM */
5199 static int iwl4965_verify_bsm(struct iwl_priv *priv)
5200 {
5201         __le32 *image = priv->ucode_boot.v_addr;
5202         u32 len = priv->ucode_boot.len;
5203         u32 reg;
5204         u32 val;
5205
5206         IWL_DEBUG_INFO("Begin verify bsm\n");
5207
5208         /* verify BSM SRAM contents */
5209         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
5210         for (reg = BSM_SRAM_LOWER_BOUND;
5211              reg < BSM_SRAM_LOWER_BOUND + len;
5212              reg += sizeof(u32), image ++) {
5213                 val = iwl_read_prph(priv, reg);
5214                 if (val != le32_to_cpu(*image)) {
5215                         IWL_ERROR("BSM uCode verification failed at "
5216                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5217                                   BSM_SRAM_LOWER_BOUND,
5218                                   reg - BSM_SRAM_LOWER_BOUND, len,
5219                                   val, le32_to_cpu(*image));
5220                         return -EIO;
5221                 }
5222         }
5223
5224         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5225
5226         return 0;
5227 }
5228
5229 /**
5230  * iwl4965_load_bsm - Load bootstrap instructions
5231  *
5232  * BSM operation:
5233  *
5234  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5235  * in special SRAM that does not power down during RFKILL.  When powering back
5236  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5237  * the bootstrap program into the on-board processor, and starts it.
5238  *
5239  * The bootstrap program loads (via DMA) instructions and data for a new
5240  * program from host DRAM locations indicated by the host driver in the
5241  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5242  * automatically.
5243  *
5244  * When initializing the NIC, the host driver points the BSM to the
5245  * "initialize" uCode image.  This uCode sets up some internal data, then
5246  * notifies host via "initialize alive" that it is complete.
5247  *
5248  * The host then replaces the BSM_DRAM_* pointer values to point to the
5249  * normal runtime uCode instructions and a backup uCode data cache buffer
5250  * (filled initially with starting data values for the on-board processor),
5251  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5252  * which begins normal operation.
5253  *
5254  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5255  * the backup data cache in DRAM before SRAM is powered down.
5256  *
5257  * When powering back up, the BSM loads the bootstrap program.  This reloads
5258  * the runtime uCode instructions and the backup data cache into SRAM,
5259  * and re-launches the runtime uCode from where it left off.
5260  */
5261 static int iwl4965_load_bsm(struct iwl_priv *priv)
5262 {
5263         __le32 *image = priv->ucode_boot.v_addr;
5264         u32 len = priv->ucode_boot.len;
5265         dma_addr_t pinst;
5266         dma_addr_t pdata;
5267         u32 inst_len;
5268         u32 data_len;
5269         int rc;
5270         int i;
5271         u32 done;
5272         u32 reg_offset;
5273
5274         IWL_DEBUG_INFO("Begin load bsm\n");
5275
5276         /* make sure bootstrap program is no larger than BSM's SRAM size */
5277         if (len > IWL_MAX_BSM_SIZE)
5278                 return -EINVAL;
5279
5280         /* Tell bootstrap uCode where to find the "Initialize" uCode
5281          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5282          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
5283          *        after the "initialize" uCode has run, to point to
5284          *        runtime/protocol instructions and backup data cache. */
5285         pinst = priv->ucode_init.p_addr >> 4;
5286         pdata = priv->ucode_init_data.p_addr >> 4;
5287         inst_len = priv->ucode_init.len;
5288         data_len = priv->ucode_init_data.len;
5289
5290         rc = iwl_grab_nic_access(priv);
5291         if (rc)
5292                 return rc;
5293
5294         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5295         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5296         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5297         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5298
5299         /* Fill BSM memory with bootstrap instructions */
5300         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5301              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5302              reg_offset += sizeof(u32), image++)
5303                 _iwl_write_prph(priv, reg_offset,
5304                                           le32_to_cpu(*image));
5305
5306         rc = iwl4965_verify_bsm(priv);
5307         if (rc) {
5308                 iwl_release_nic_access(priv);
5309                 return rc;
5310         }
5311
5312         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5313         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5314         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
5315                                  RTC_INST_LOWER_BOUND);
5316         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5317
5318         /* Load bootstrap code into instruction SRAM now,
5319          *   to prepare to load "initialize" uCode */
5320         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5321                 BSM_WR_CTRL_REG_BIT_START);
5322
5323         /* Wait for load of bootstrap uCode to finish */
5324         for (i = 0; i < 100; i++) {
5325                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
5326                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5327                         break;
5328                 udelay(10);
5329         }
5330         if (i < 100)
5331                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5332         else {
5333                 IWL_ERROR("BSM write did not complete!\n");
5334                 return -EIO;
5335         }
5336
5337         /* Enable future boot loads whenever power management unit triggers it
5338          *   (e.g. when powering back up after power-save shutdown) */
5339         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5340                 BSM_WR_CTRL_REG_BIT_START_EN);
5341
5342         iwl_release_nic_access(priv);
5343
5344         return 0;
5345 }
5346
5347 static void iwl4965_nic_start(struct iwl_priv *priv)
5348 {
5349         /* Remove all resets to allow NIC to operate */
5350         iwl_write32(priv, CSR_RESET, 0);
5351 }
5352
5353
5354 /**
5355  * iwl4965_read_ucode - Read uCode images from disk file.
5356  *
5357  * Copy into buffers for card to fetch via bus-mastering
5358  */
5359 static int iwl4965_read_ucode(struct iwl_priv *priv)
5360 {
5361         struct iwl4965_ucode *ucode;
5362         int ret;
5363         const struct firmware *ucode_raw;
5364         const char *name = priv->cfg->fw_name;
5365         u8 *src;
5366         size_t len;
5367         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5368
5369         /* Ask kernel firmware_class module to get the boot firmware off disk.
5370          * request_firmware() is synchronous, file is in memory on return. */
5371         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5372         if (ret < 0) {
5373                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5374                                         name, ret);
5375                 goto error;
5376         }
5377
5378         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5379                        name, ucode_raw->size);
5380
5381         /* Make sure that we got at least our header! */
5382         if (ucode_raw->size < sizeof(*ucode)) {
5383                 IWL_ERROR("File size way too small!\n");
5384                 ret = -EINVAL;
5385                 goto err_release;
5386         }
5387
5388         /* Data from ucode file:  header followed by uCode images */
5389         ucode = (void *)ucode_raw->data;
5390
5391         ver = le32_to_cpu(ucode->ver);
5392         inst_size = le32_to_cpu(ucode->inst_size);
5393         data_size = le32_to_cpu(ucode->data_size);
5394         init_size = le32_to_cpu(ucode->init_size);
5395         init_data_size = le32_to_cpu(ucode->init_data_size);
5396         boot_size = le32_to_cpu(ucode->boot_size);
5397
5398         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5399         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5400                        inst_size);
5401         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5402                        data_size);
5403         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5404                        init_size);
5405         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5406                        init_data_size);
5407         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5408                        boot_size);
5409
5410         /* Verify size of file vs. image size info in file's header */
5411         if (ucode_raw->size < sizeof(*ucode) +
5412                 inst_size + data_size + init_size +
5413                 init_data_size + boot_size) {
5414
5415                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5416                                (int)ucode_raw->size);
5417                 ret = -EINVAL;
5418                 goto err_release;
5419         }
5420
5421         /* Verify that uCode images will fit in card's SRAM */
5422         if (inst_size > IWL_MAX_INST_SIZE) {
5423                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5424                                inst_size);
5425                 ret = -EINVAL;
5426                 goto err_release;
5427         }
5428
5429         if (data_size > IWL_MAX_DATA_SIZE) {
5430                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5431                                 data_size);
5432                 ret = -EINVAL;
5433                 goto err_release;
5434         }
5435         if (init_size > IWL_MAX_INST_SIZE) {
5436                 IWL_DEBUG_INFO
5437                     ("uCode init instr len %d too large to fit in\n",
5438                       init_size);
5439                 ret = -EINVAL;
5440                 goto err_release;
5441         }
5442         if (init_data_size > IWL_MAX_DATA_SIZE) {
5443                 IWL_DEBUG_INFO
5444                     ("uCode init data len %d too large to fit in\n",
5445                       init_data_size);
5446                 ret = -EINVAL;
5447                 goto err_release;
5448         }
5449         if (boot_size > IWL_MAX_BSM_SIZE) {
5450                 IWL_DEBUG_INFO
5451                     ("uCode boot instr len %d too large to fit in\n",
5452                       boot_size);
5453                 ret = -EINVAL;
5454                 goto err_release;
5455         }
5456
5457         /* Allocate ucode buffers for card's bus-master loading ... */
5458
5459         /* Runtime instructions and 2 copies of data:
5460          * 1) unmodified from disk
5461          * 2) backup cache for save/restore during power-downs */
5462         priv->ucode_code.len = inst_size;
5463         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5464
5465         priv->ucode_data.len = data_size;
5466         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5467
5468         priv->ucode_data_backup.len = data_size;
5469         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5470
5471         /* Initialization instructions and data */
5472         if (init_size && init_data_size) {
5473                 priv->ucode_init.len = init_size;
5474                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5475
5476                 priv->ucode_init_data.len = init_data_size;
5477                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5478
5479                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5480                         goto err_pci_alloc;
5481         }
5482
5483         /* Bootstrap (instructions only, no data) */
5484         if (boot_size) {
5485                 priv->ucode_boot.len = boot_size;
5486                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5487
5488                 if (!priv->ucode_boot.v_addr)
5489                         goto err_pci_alloc;
5490         }
5491
5492         /* Copy images into buffers for card's bus-master reads ... */
5493
5494         /* Runtime instructions (first block of data in file) */
5495         src = &ucode->data[0];
5496         len = priv->ucode_code.len;
5497         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5498         memcpy(priv->ucode_code.v_addr, src, len);
5499         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5500                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5501
5502         /* Runtime data (2nd block)
5503          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
5504         src = &ucode->data[inst_size];
5505         len = priv->ucode_data.len;
5506         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5507         memcpy(priv->ucode_data.v_addr, src, len);
5508         memcpy(priv->ucode_data_backup.v_addr, src, len);
5509
5510         /* Initialization instructions (3rd block) */
5511         if (init_size) {
5512                 src = &ucode->data[inst_size + data_size];
5513                 len = priv->ucode_init.len;
5514                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5515                                 len);
5516                 memcpy(priv->ucode_init.v_addr, src, len);
5517         }
5518
5519         /* Initialization data (4th block) */
5520         if (init_data_size) {
5521                 src = &ucode->data[inst_size + data_size + init_size];
5522                 len = priv->ucode_init_data.len;
5523                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5524                                len);
5525                 memcpy(priv->ucode_init_data.v_addr, src, len);
5526         }
5527
5528         /* Bootstrap instructions (5th block) */
5529         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5530         len = priv->ucode_boot.len;
5531         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5532         memcpy(priv->ucode_boot.v_addr, src, len);
5533
5534         /* We have our copies now, allow OS release its copies */
5535         release_firmware(ucode_raw);
5536         return 0;
5537
5538  err_pci_alloc:
5539         IWL_ERROR("failed to allocate pci memory\n");
5540         ret = -ENOMEM;
5541         iwl4965_dealloc_ucode_pci(priv);
5542
5543  err_release:
5544         release_firmware(ucode_raw);
5545
5546  error:
5547         return ret;
5548 }
5549
5550
5551 /**
5552  * iwl4965_set_ucode_ptrs - Set uCode address location
5553  *
5554  * Tell initialization uCode where to find runtime uCode.
5555  *
5556  * BSM registers initially contain pointers to initialization uCode.
5557  * We need to replace them to load runtime uCode inst and data,
5558  * and to save runtime data when powering down.
5559  */
5560 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5561 {
5562         dma_addr_t pinst;
5563         dma_addr_t pdata;
5564         int rc = 0;
5565         unsigned long flags;
5566
5567         /* bits 35:4 for 4965 */
5568         pinst = priv->ucode_code.p_addr >> 4;
5569         pdata = priv->ucode_data_backup.p_addr >> 4;
5570
5571         spin_lock_irqsave(&priv->lock, flags);
5572         rc = iwl_grab_nic_access(priv);
5573         if (rc) {
5574                 spin_unlock_irqrestore(&priv->lock, flags);
5575                 return rc;
5576         }
5577
5578         /* Tell bootstrap uCode where to find image to load */
5579         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5580         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5581         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5582                                  priv->ucode_data.len);
5583
5584         /* Inst bytecount must be last to set up, bit 31 signals uCode
5585          *   that all new ptr/size info is in place */
5586         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5587                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5588
5589         iwl_release_nic_access(priv);
5590
5591         spin_unlock_irqrestore(&priv->lock, flags);
5592
5593         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5594
5595         return rc;
5596 }
5597
5598 /**
5599  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5600  *
5601  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5602  *
5603  * The 4965 "initialize" ALIVE reply contains calibration data for:
5604  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
5605  *   (3945 does not contain this data).
5606  *
5607  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5608 */
5609 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5610 {
5611         /* Check alive response for "valid" sign from uCode */
5612         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5613                 /* We had an error bringing up the hardware, so take it
5614                  * all the way back down so we can try again */
5615                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5616                 goto restart;
5617         }
5618
5619         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5620          * This is a paranoid check, because we would not have gotten the
5621          * "initialize" alive if code weren't properly loaded.  */
5622         if (iwl4965_verify_ucode(priv)) {
5623                 /* Runtime instruction load was bad;
5624                  * take it all the way back down so we can try again */
5625                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5626                 goto restart;
5627         }
5628
5629         /* Calculate temperature */
5630         priv->temperature = iwl4965_get_temperature(priv);
5631
5632         /* Send pointers to protocol/runtime uCode image ... init code will
5633          * load and launch runtime uCode, which will send us another "Alive"
5634          * notification. */
5635         IWL_DEBUG_INFO("Initialization Alive received.\n");
5636         if (iwl4965_set_ucode_ptrs(priv)) {
5637                 /* Runtime instruction load won't happen;
5638                  * take it all the way back down so we can try again */
5639                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5640                 goto restart;
5641         }
5642         return;
5643
5644  restart:
5645         queue_work(priv->workqueue, &priv->restart);
5646 }
5647
5648
5649 /**
5650  * iwl4965_alive_start - called after REPLY_ALIVE notification received
5651  *                   from protocol/runtime uCode (initialization uCode's
5652  *                   Alive gets handled by iwl4965_init_alive_start()).
5653  */
5654 static void iwl4965_alive_start(struct iwl_priv *priv)
5655 {
5656         int rc = 0;
5657
5658         IWL_DEBUG_INFO("Runtime Alive received.\n");
5659
5660         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5661                 /* We had an error bringing up the hardware, so take it
5662                  * all the way back down so we can try again */
5663                 IWL_DEBUG_INFO("Alive failed.\n");
5664                 goto restart;
5665         }
5666
5667         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5668          * This is a paranoid check, because we would not have gotten the
5669          * "runtime" alive if code weren't properly loaded.  */
5670         if (iwl4965_verify_ucode(priv)) {
5671                 /* Runtime instruction load was bad;
5672                  * take it all the way back down so we can try again */
5673                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5674                 goto restart;
5675         }
5676
5677         iwlcore_clear_stations_table(priv);
5678
5679         rc = iwl4965_alive_notify(priv);
5680         if (rc) {
5681                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5682                             rc);
5683                 goto restart;
5684         }
5685
5686         /* After the ALIVE response, we can send host commands to 4965 uCode */
5687         set_bit(STATUS_ALIVE, &priv->status);
5688
5689         /* Clear out the uCode error bit if it is set */
5690         clear_bit(STATUS_FW_ERROR, &priv->status);
5691
5692         if (iwl4965_is_rfkill(priv))
5693                 return;
5694
5695         ieee80211_start_queues(priv->hw);
5696
5697         priv->active_rate = priv->rates_mask;
5698         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5699
5700         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5701
5702         if (iwl4965_is_associated(priv)) {
5703                 struct iwl4965_rxon_cmd *active_rxon =
5704                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5705
5706                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5707                        sizeof(priv->staging_rxon));
5708                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5709         } else {
5710                 /* Initialize our rx_config data */
5711                 iwl4965_connection_init_rx_config(priv);
5712                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5713         }
5714
5715         /* Configure Bluetooth device coexistence support */
5716         iwl4965_send_bt_config(priv);
5717
5718         /* Configure the adapter for unassociated operation */
5719         iwl4965_commit_rxon(priv);
5720
5721         /* At this point, the NIC is initialized and operational */
5722         priv->notif_missed_beacons = 0;
5723
5724         iwl4965_rf_kill_ct_config(priv);
5725
5726         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5727         set_bit(STATUS_READY, &priv->status);
5728         wake_up_interruptible(&priv->wait_command_queue);
5729
5730         iwl_leds_register(priv);
5731
5732         if (priv->error_recovering)
5733                 iwl4965_error_recovery(priv);
5734
5735         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
5736         return;
5737
5738  restart:
5739         queue_work(priv->workqueue, &priv->restart);
5740 }
5741
5742 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5743
5744 static void __iwl4965_down(struct iwl_priv *priv)
5745 {
5746         unsigned long flags;
5747         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5748         struct ieee80211_conf *conf = NULL;
5749
5750         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5751
5752         conf = ieee80211_get_hw_conf(priv->hw);
5753
5754         if (!exit_pending)
5755                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5756
5757         iwl_leds_unregister(priv);
5758
5759         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
5760
5761         iwlcore_clear_stations_table(priv);
5762
5763         /* Unblock any waiting calls */
5764         wake_up_interruptible_all(&priv->wait_command_queue);
5765
5766         /* Wipe out the EXIT_PENDING status bit if we are not actually
5767          * exiting the module */
5768         if (!exit_pending)
5769                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5770
5771         /* stop and reset the on-board processor */
5772         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5773
5774         /* tell the device to stop sending interrupts */
5775         iwl4965_disable_interrupts(priv);
5776
5777         if (priv->mac80211_registered)
5778                 ieee80211_stop_queues(priv->hw);
5779
5780         /* If we have not previously called iwl4965_init() then
5781          * clear all bits but the RF Kill and SUSPEND bits and return */
5782         if (!iwl4965_is_init(priv)) {
5783                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5784                                         STATUS_RF_KILL_HW |
5785                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5786                                         STATUS_RF_KILL_SW |
5787                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5788                                         STATUS_GEO_CONFIGURED |
5789                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5790                                         STATUS_IN_SUSPEND;
5791                 goto exit;
5792         }
5793
5794         /* ...otherwise clear out all the status bits but the RF Kill and
5795          * SUSPEND bits and continue taking the NIC down. */
5796         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5797                                 STATUS_RF_KILL_HW |
5798                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5799                                 STATUS_RF_KILL_SW |
5800                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5801                                 STATUS_GEO_CONFIGURED |
5802                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5803                                 STATUS_IN_SUSPEND |
5804                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5805                                 STATUS_FW_ERROR;
5806
5807         spin_lock_irqsave(&priv->lock, flags);
5808         iwl_clear_bit(priv, CSR_GP_CNTRL,
5809                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5810         spin_unlock_irqrestore(&priv->lock, flags);
5811
5812         iwl4965_hw_txq_ctx_stop(priv);
5813         iwl4965_hw_rxq_stop(priv);
5814
5815         spin_lock_irqsave(&priv->lock, flags);
5816         if (!iwl_grab_nic_access(priv)) {
5817                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5818                                          APMG_CLK_VAL_DMA_CLK_RQT);
5819                 iwl_release_nic_access(priv);
5820         }
5821         spin_unlock_irqrestore(&priv->lock, flags);
5822
5823         udelay(5);
5824
5825         iwl4965_hw_nic_stop_master(priv);
5826         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5827         iwl4965_hw_nic_reset(priv);
5828
5829  exit:
5830         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5831
5832         if (priv->ibss_beacon)
5833                 dev_kfree_skb(priv->ibss_beacon);
5834         priv->ibss_beacon = NULL;
5835
5836         /* clear out any free frames */
5837         iwl4965_clear_free_frames(priv);
5838 }
5839
5840 static void iwl4965_down(struct iwl_priv *priv)
5841 {
5842         mutex_lock(&priv->mutex);
5843         __iwl4965_down(priv);
5844         mutex_unlock(&priv->mutex);
5845
5846         iwl4965_cancel_deferred_work(priv);
5847 }
5848
5849 #define MAX_HW_RESTARTS 5
5850
5851 static int __iwl4965_up(struct iwl_priv *priv)
5852 {
5853         int rc, i;
5854
5855         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5856                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5857                 return -EIO;
5858         }
5859
5860         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5861                 IWL_WARNING("Radio disabled by SW RF kill (module "
5862                             "parameter)\n");
5863                 iwl_rfkill_set_hw_state(priv);
5864                 return -ENODEV;
5865         }
5866
5867         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5868                 IWL_ERROR("ucode not available for device bringup\n");
5869                 return -EIO;
5870         }
5871
5872         /* If platform's RF_KILL switch is NOT set to KILL */
5873         if (iwl_read32(priv, CSR_GP_CNTRL) &
5874                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5875                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5876         else {
5877                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5878                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5879                         iwl_rfkill_set_hw_state(priv);
5880                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5881                         return -ENODEV;
5882                 }
5883         }
5884
5885         iwl_rfkill_set_hw_state(priv);
5886         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5887
5888         rc = iwl4965_hw_nic_init(priv);
5889         if (rc) {
5890                 IWL_ERROR("Unable to int nic\n");
5891                 return rc;
5892         }
5893
5894         /* make sure rfkill handshake bits are cleared */
5895         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5896         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5897                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5898
5899         /* clear (again), then enable host interrupts */
5900         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5901         iwl4965_enable_interrupts(priv);
5902
5903         /* really make sure rfkill handshake bits are cleared */
5904         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5905         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5906
5907         /* Copy original ucode data image from disk into backup cache.
5908          * This will be used to initialize the on-board processor's
5909          * data SRAM for a clean start when the runtime program first loads. */
5910         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5911                priv->ucode_data.len);
5912
5913         /* We return success when we resume from suspend and rf_kill is on. */
5914         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5915                 return 0;
5916
5917         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5918
5919                 iwlcore_clear_stations_table(priv);
5920
5921                 /* load bootstrap state machine,
5922                  * load bootstrap program into processor's memory,
5923                  * prepare to load the "initialize" uCode */
5924                 rc = iwl4965_load_bsm(priv);
5925
5926                 if (rc) {
5927                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5928                         continue;
5929                 }
5930
5931                 /* start card; "initialize" will load runtime ucode */
5932                 iwl4965_nic_start(priv);
5933
5934                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5935
5936                 return 0;
5937         }
5938
5939         set_bit(STATUS_EXIT_PENDING, &priv->status);
5940         __iwl4965_down(priv);
5941
5942         /* tried to restart and config the device for as long as our
5943          * patience could withstand */
5944         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5945         return -EIO;
5946 }
5947
5948
5949 /*****************************************************************************
5950  *
5951  * Workqueue callbacks
5952  *
5953  *****************************************************************************/
5954
5955 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5956 {
5957         struct iwl_priv *priv =
5958             container_of(data, struct iwl_priv, init_alive_start.work);
5959
5960         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5961                 return;
5962
5963         mutex_lock(&priv->mutex);
5964         iwl4965_init_alive_start(priv);
5965         mutex_unlock(&priv->mutex);
5966 }
5967
5968 static void iwl4965_bg_alive_start(struct work_struct *data)
5969 {
5970         struct iwl_priv *priv =
5971             container_of(data, struct iwl_priv, alive_start.work);
5972
5973         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5974                 return;
5975
5976         mutex_lock(&priv->mutex);
5977         iwl4965_alive_start(priv);
5978         mutex_unlock(&priv->mutex);
5979 }
5980
5981 static void iwl4965_bg_rf_kill(struct work_struct *work)
5982 {
5983         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5984
5985         wake_up_interruptible(&priv->wait_command_queue);
5986
5987         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5988                 return;
5989
5990         mutex_lock(&priv->mutex);
5991
5992         if (!iwl4965_is_rfkill(priv)) {
5993                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5994                           "HW and/or SW RF Kill no longer active, restarting "
5995                           "device\n");
5996                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5997                         queue_work(priv->workqueue, &priv->restart);
5998         } else {
5999                 /* make sure mac80211 stop sending Tx frame */
6000                 if (priv->mac80211_registered)
6001                         ieee80211_stop_queues(priv->hw);
6002
6003                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6004                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6005                                           "disabled by SW switch\n");
6006                 else
6007                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6008                                     "Kill switch must be turned off for "
6009                                     "wireless networking to work.\n");
6010         }
6011         iwl_rfkill_set_hw_state(priv);
6012
6013         mutex_unlock(&priv->mutex);
6014 }
6015
6016 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6017
6018 static void iwl4965_bg_scan_check(struct work_struct *data)
6019 {
6020         struct iwl_priv *priv =
6021             container_of(data, struct iwl_priv, scan_check.work);
6022
6023         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6024                 return;
6025
6026         mutex_lock(&priv->mutex);
6027         if (test_bit(STATUS_SCANNING, &priv->status) ||
6028             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6029                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6030                           "Scan completion watchdog resetting adapter (%dms)\n",
6031                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6032
6033                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6034                         iwl4965_send_scan_abort(priv);
6035         }
6036         mutex_unlock(&priv->mutex);
6037 }
6038
6039 static void iwl4965_bg_request_scan(struct work_struct *data)
6040 {
6041         struct iwl_priv *priv =
6042             container_of(data, struct iwl_priv, request_scan);
6043         struct iwl_host_cmd cmd = {
6044                 .id = REPLY_SCAN_CMD,
6045                 .len = sizeof(struct iwl4965_scan_cmd),
6046                 .meta.flags = CMD_SIZE_HUGE,
6047         };
6048         struct iwl4965_scan_cmd *scan;
6049         struct ieee80211_conf *conf = NULL;
6050         u16 cmd_len;
6051         enum ieee80211_band band;
6052         u8 direct_mask;
6053         int ret = 0;
6054
6055         conf = ieee80211_get_hw_conf(priv->hw);
6056
6057         mutex_lock(&priv->mutex);
6058
6059         if (!iwl4965_is_ready(priv)) {
6060                 IWL_WARNING("request scan called when driver not ready.\n");
6061                 goto done;
6062         }
6063
6064         /* Make sure the scan wasn't cancelled before this queued work
6065          * was given the chance to run... */
6066         if (!test_bit(STATUS_SCANNING, &priv->status))
6067                 goto done;
6068
6069         /* This should never be called or scheduled if there is currently
6070          * a scan active in the hardware. */
6071         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6072                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6073                                "Ignoring second request.\n");
6074                 ret = -EIO;
6075                 goto done;
6076         }
6077
6078         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6079                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6080                 goto done;
6081         }
6082
6083         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6084                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6085                 goto done;
6086         }
6087
6088         if (iwl4965_is_rfkill(priv)) {
6089                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6090                 goto done;
6091         }
6092
6093         if (!test_bit(STATUS_READY, &priv->status)) {
6094                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6095                 goto done;
6096         }
6097
6098         if (!priv->scan_bands) {
6099                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6100                 goto done;
6101         }
6102
6103         if (!priv->scan) {
6104                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6105                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6106                 if (!priv->scan) {
6107                         ret = -ENOMEM;
6108                         goto done;
6109                 }
6110         }
6111         scan = priv->scan;
6112         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6113
6114         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6115         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6116
6117         if (iwl4965_is_associated(priv)) {
6118                 u16 interval = 0;
6119                 u32 extra;
6120                 u32 suspend_time = 100;
6121                 u32 scan_suspend_time = 100;
6122                 unsigned long flags;
6123
6124                 IWL_DEBUG_INFO("Scanning while associated...\n");
6125
6126                 spin_lock_irqsave(&priv->lock, flags);
6127                 interval = priv->beacon_int;
6128                 spin_unlock_irqrestore(&priv->lock, flags);
6129
6130                 scan->suspend_time = 0;
6131                 scan->max_out_time = cpu_to_le32(200 * 1024);
6132                 if (!interval)
6133                         interval = suspend_time;
6134
6135                 extra = (suspend_time / interval) << 22;
6136                 scan_suspend_time = (extra |
6137                     ((suspend_time % interval) * 1024));
6138                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6139                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6140                                scan_suspend_time, interval);
6141         }
6142
6143         /* We should add the ability for user to lock to PASSIVE ONLY */
6144         if (priv->one_direct_scan) {
6145                 IWL_DEBUG_SCAN
6146                     ("Kicking off one direct scan for '%s'\n",
6147                      iwl4965_escape_essid(priv->direct_ssid,
6148                                       priv->direct_ssid_len));
6149                 scan->direct_scan[0].id = WLAN_EID_SSID;
6150                 scan->direct_scan[0].len = priv->direct_ssid_len;
6151                 memcpy(scan->direct_scan[0].ssid,
6152                        priv->direct_ssid, priv->direct_ssid_len);
6153                 direct_mask = 1;
6154         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6155                 scan->direct_scan[0].id = WLAN_EID_SSID;
6156                 scan->direct_scan[0].len = priv->essid_len;
6157                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6158                 direct_mask = 1;
6159         } else {
6160                 direct_mask = 0;
6161         }
6162
6163         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6164         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6165         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6166
6167
6168         switch (priv->scan_bands) {
6169         case 2:
6170                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6171                 scan->tx_cmd.rate_n_flags =
6172                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6173                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6174
6175                 scan->good_CRC_th = 0;
6176                 band = IEEE80211_BAND_2GHZ;
6177                 break;
6178
6179         case 1:
6180                 scan->tx_cmd.rate_n_flags =
6181                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6182                                 RATE_MCS_ANT_B_MSK);
6183                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6184                 band = IEEE80211_BAND_5GHZ;
6185                 break;
6186
6187         default:
6188                 IWL_WARNING("Invalid scan band count\n");
6189                 goto done;
6190         }
6191
6192         /* We don't build a direct scan probe request; the uCode will do
6193          * that based on the direct_mask added to each channel entry */
6194         cmd_len = iwl4965_fill_probe_req(priv, band,
6195                                         (struct ieee80211_mgmt *)scan->data,
6196                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6197
6198         scan->tx_cmd.len = cpu_to_le16(cmd_len);
6199         /* select Rx chains */
6200
6201         /* Force use of chains B and C (0x6) for scan Rx.
6202          * Avoid A (0x1) because of its off-channel reception on A-band.
6203          * MIMO is not used here, but value is required to make uCode happy. */
6204         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6205                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6206                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6207                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6208
6209         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6210                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6211
6212         if (direct_mask) {
6213                 IWL_DEBUG_SCAN
6214                     ("Initiating direct scan for %s.\n",
6215                      iwl4965_escape_essid(priv->essid, priv->essid_len));
6216                 scan->channel_count =
6217                         iwl4965_get_channels_for_scan(
6218                                 priv, band, 1, /* active */
6219                                 direct_mask,
6220                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6221         } else {
6222                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6223                 scan->channel_count =
6224                         iwl4965_get_channels_for_scan(
6225                                 priv, band, 0, /* passive */
6226                                 direct_mask,
6227                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6228         }
6229
6230         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6231             scan->channel_count * sizeof(struct iwl4965_scan_channel);
6232         cmd.data = scan;
6233         scan->len = cpu_to_le16(cmd.len);
6234
6235         set_bit(STATUS_SCAN_HW, &priv->status);
6236         ret = iwl_send_cmd_sync(priv, &cmd);
6237         if (ret)
6238                 goto done;
6239
6240         queue_delayed_work(priv->workqueue, &priv->scan_check,
6241                            IWL_SCAN_CHECK_WATCHDOG);
6242
6243         mutex_unlock(&priv->mutex);
6244         return;
6245
6246  done:
6247         /* inform mac80211 scan aborted */
6248         queue_work(priv->workqueue, &priv->scan_completed);
6249         mutex_unlock(&priv->mutex);
6250 }
6251
6252 static void iwl4965_bg_up(struct work_struct *data)
6253 {
6254         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6255
6256         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6257                 return;
6258
6259         mutex_lock(&priv->mutex);
6260         __iwl4965_up(priv);
6261         mutex_unlock(&priv->mutex);
6262 }
6263
6264 static void iwl4965_bg_restart(struct work_struct *data)
6265 {
6266         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6267
6268         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6269                 return;
6270
6271         iwl4965_down(priv);
6272         queue_work(priv->workqueue, &priv->up);
6273 }
6274
6275 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6276 {
6277         struct iwl_priv *priv =
6278             container_of(data, struct iwl_priv, rx_replenish);
6279
6280         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6281                 return;
6282
6283         mutex_lock(&priv->mutex);
6284         iwl4965_rx_replenish(priv);
6285         mutex_unlock(&priv->mutex);
6286 }
6287
6288 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6289
6290 static void iwl4965_bg_post_associate(struct work_struct *data)
6291 {
6292         struct iwl_priv *priv = container_of(data, struct iwl_priv,
6293                                              post_associate.work);
6294         struct ieee80211_conf *conf = NULL;
6295         int ret = 0;
6296         DECLARE_MAC_BUF(mac);
6297
6298         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6299                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6300                 return;
6301         }
6302
6303         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6304                         priv->assoc_id,
6305                         print_mac(mac, priv->active_rxon.bssid_addr));
6306
6307
6308         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6309                 return;
6310
6311         mutex_lock(&priv->mutex);
6312
6313         if (!priv->vif || !priv->is_open) {
6314                 mutex_unlock(&priv->mutex);
6315                 return;
6316         }
6317         iwl4965_scan_cancel_timeout(priv, 200);
6318
6319         conf = ieee80211_get_hw_conf(priv->hw);
6320
6321         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6322         iwl4965_commit_rxon(priv);
6323
6324         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6325         iwl4965_setup_rxon_timing(priv);
6326         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6327                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6328         if (ret)
6329                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6330                             "Attempting to continue.\n");
6331
6332         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6333
6334 #ifdef CONFIG_IWL4965_HT
6335         if (priv->current_ht_config.is_ht)
6336                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6337 #endif /* CONFIG_IWL4965_HT*/
6338         iwl4965_set_rxon_chain(priv);
6339         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6340
6341         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6342                         priv->assoc_id, priv->beacon_int);
6343
6344         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6345                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6346         else
6347                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6348
6349         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6350                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6351                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6352                 else
6353                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6354
6355                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6356                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6357
6358         }
6359
6360         iwl4965_commit_rxon(priv);
6361
6362         switch (priv->iw_mode) {
6363         case IEEE80211_IF_TYPE_STA:
6364                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6365                 break;
6366
6367         case IEEE80211_IF_TYPE_IBSS:
6368
6369                 /* clear out the station table */
6370                 iwlcore_clear_stations_table(priv);
6371
6372                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6373                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6374                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6375                 iwl4965_send_beacon_cmd(priv);
6376
6377                 break;
6378
6379         default:
6380                 IWL_ERROR("%s Should not be called in %d mode\n",
6381                                 __FUNCTION__, priv->iw_mode);
6382                 break;
6383         }
6384
6385         iwl4965_sequence_reset(priv);
6386
6387 #ifdef CONFIG_IWL4965_SENSITIVITY
6388         /* Enable Rx differential gain and sensitivity calibrations */
6389         iwl4965_chain_noise_reset(priv);
6390         priv->start_calib = 1;
6391 #endif /* CONFIG_IWL4965_SENSITIVITY */
6392
6393         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6394                 priv->assoc_station_added = 1;
6395
6396         iwl4965_activate_qos(priv, 0);
6397
6398         /* we have just associated, don't start scan too early */
6399         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6400         mutex_unlock(&priv->mutex);
6401 }
6402
6403 static void iwl4965_bg_abort_scan(struct work_struct *work)
6404 {
6405         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6406
6407         if (!iwl4965_is_ready(priv))
6408                 return;
6409
6410         mutex_lock(&priv->mutex);
6411
6412         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6413         iwl4965_send_scan_abort(priv);
6414
6415         mutex_unlock(&priv->mutex);
6416 }
6417
6418 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6419
6420 static void iwl4965_bg_scan_completed(struct work_struct *work)
6421 {
6422         struct iwl_priv *priv =
6423             container_of(work, struct iwl_priv, scan_completed);
6424
6425         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6426
6427         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6428                 return;
6429
6430         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6431                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6432
6433         ieee80211_scan_completed(priv->hw);
6434
6435         /* Since setting the TXPOWER may have been deferred while
6436          * performing the scan, fire one off */
6437         mutex_lock(&priv->mutex);
6438         iwl4965_hw_reg_send_txpower(priv);
6439         mutex_unlock(&priv->mutex);
6440 }
6441
6442 /*****************************************************************************
6443  *
6444  * mac80211 entry point functions
6445  *
6446  *****************************************************************************/
6447
6448 #define UCODE_READY_TIMEOUT     (2 * HZ)
6449
6450 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6451 {
6452         struct iwl_priv *priv = hw->priv;
6453         int ret;
6454
6455         IWL_DEBUG_MAC80211("enter\n");
6456
6457         if (pci_enable_device(priv->pci_dev)) {
6458                 IWL_ERROR("Fail to pci_enable_device\n");
6459                 return -ENODEV;
6460         }
6461         pci_restore_state(priv->pci_dev);
6462         pci_enable_msi(priv->pci_dev);
6463
6464         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6465                           DRV_NAME, priv);
6466         if (ret) {
6467                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6468                 goto out_disable_msi;
6469         }
6470
6471         /* we should be verifying the device is ready to be opened */
6472         mutex_lock(&priv->mutex);
6473
6474         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6475         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6476          * ucode filename and max sizes are card-specific. */
6477
6478         if (!priv->ucode_code.len) {
6479                 ret = iwl4965_read_ucode(priv);
6480                 if (ret) {
6481                         IWL_ERROR("Could not read microcode: %d\n", ret);
6482                         mutex_unlock(&priv->mutex);
6483                         goto out_release_irq;
6484                 }
6485         }
6486
6487         ret = __iwl4965_up(priv);
6488
6489         mutex_unlock(&priv->mutex);
6490
6491         if (ret)
6492                 goto out_release_irq;
6493
6494         IWL_DEBUG_INFO("Start UP work done.\n");
6495
6496         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6497                 return 0;
6498
6499         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6500          * mac80211 will not be run successfully. */
6501         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6502                         test_bit(STATUS_READY, &priv->status),
6503                         UCODE_READY_TIMEOUT);
6504         if (!ret) {
6505                 if (!test_bit(STATUS_READY, &priv->status)) {
6506                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6507                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6508                         ret = -ETIMEDOUT;
6509                         goto out_release_irq;
6510                 }
6511         }
6512
6513         priv->is_open = 1;
6514         IWL_DEBUG_MAC80211("leave\n");
6515         return 0;
6516
6517 out_release_irq:
6518         free_irq(priv->pci_dev->irq, priv);
6519 out_disable_msi:
6520         pci_disable_msi(priv->pci_dev);
6521         pci_disable_device(priv->pci_dev);
6522         priv->is_open = 0;
6523         IWL_DEBUG_MAC80211("leave - failed\n");
6524         return ret;
6525 }
6526
6527 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6528 {
6529         struct iwl_priv *priv = hw->priv;
6530
6531         IWL_DEBUG_MAC80211("enter\n");
6532
6533         if (!priv->is_open) {
6534                 IWL_DEBUG_MAC80211("leave - skip\n");
6535                 return;
6536         }
6537
6538         priv->is_open = 0;
6539
6540         if (iwl4965_is_ready_rf(priv)) {
6541                 /* stop mac, cancel any scan request and clear
6542                  * RXON_FILTER_ASSOC_MSK BIT
6543                  */
6544                 mutex_lock(&priv->mutex);
6545                 iwl4965_scan_cancel_timeout(priv, 100);
6546                 cancel_delayed_work(&priv->post_associate);
6547                 mutex_unlock(&priv->mutex);
6548         }
6549
6550         iwl4965_down(priv);
6551
6552         flush_workqueue(priv->workqueue);
6553         free_irq(priv->pci_dev->irq, priv);
6554         pci_disable_msi(priv->pci_dev);
6555         pci_save_state(priv->pci_dev);
6556         pci_disable_device(priv->pci_dev);
6557
6558         IWL_DEBUG_MAC80211("leave\n");
6559 }
6560
6561 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6562                       struct ieee80211_tx_control *ctl)
6563 {
6564         struct iwl_priv *priv = hw->priv;
6565
6566         IWL_DEBUG_MAC80211("enter\n");
6567
6568         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6569                 IWL_DEBUG_MAC80211("leave - monitor\n");
6570                 return -1;
6571         }
6572
6573         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6574                      ctl->tx_rate->bitrate);
6575
6576         if (iwl4965_tx_skb(priv, skb, ctl))
6577                 dev_kfree_skb_any(skb);
6578
6579         IWL_DEBUG_MAC80211("leave\n");
6580         return 0;
6581 }
6582
6583 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6584                                  struct ieee80211_if_init_conf *conf)
6585 {
6586         struct iwl_priv *priv = hw->priv;
6587         unsigned long flags;
6588         DECLARE_MAC_BUF(mac);
6589
6590         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6591
6592         if (priv->vif) {
6593                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6594                 return -EOPNOTSUPP;
6595         }
6596
6597         spin_lock_irqsave(&priv->lock, flags);
6598         priv->vif = conf->vif;
6599
6600         spin_unlock_irqrestore(&priv->lock, flags);
6601
6602         mutex_lock(&priv->mutex);
6603
6604         if (conf->mac_addr) {
6605                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6606                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6607         }
6608
6609         if (iwl4965_is_ready(priv))
6610                 iwl4965_set_mode(priv, conf->type);
6611
6612         mutex_unlock(&priv->mutex);
6613
6614         IWL_DEBUG_MAC80211("leave\n");
6615         return 0;
6616 }
6617
6618 /**
6619  * iwl4965_mac_config - mac80211 config callback
6620  *
6621  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6622  * be set inappropriately and the driver currently sets the hardware up to
6623  * use it whenever needed.
6624  */
6625 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6626 {
6627         struct iwl_priv *priv = hw->priv;
6628         const struct iwl_channel_info *ch_info;
6629         unsigned long flags;
6630         int ret = 0;
6631
6632         mutex_lock(&priv->mutex);
6633         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6634
6635         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6636
6637         if (!iwl4965_is_ready(priv)) {
6638                 IWL_DEBUG_MAC80211("leave - not ready\n");
6639                 ret = -EIO;
6640                 goto out;
6641         }
6642
6643         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6644                      test_bit(STATUS_SCANNING, &priv->status))) {
6645                 IWL_DEBUG_MAC80211("leave - scanning\n");
6646                 set_bit(STATUS_CONF_PENDING, &priv->status);
6647                 mutex_unlock(&priv->mutex);
6648                 return 0;
6649         }
6650
6651         spin_lock_irqsave(&priv->lock, flags);
6652
6653         ch_info = iwl_get_channel_info(priv, conf->channel->band,
6654                         ieee80211_frequency_to_channel(conf->channel->center_freq));
6655         if (!is_channel_valid(ch_info)) {
6656                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6657                 spin_unlock_irqrestore(&priv->lock, flags);
6658                 ret = -EINVAL;
6659                 goto out;
6660         }
6661
6662 #ifdef CONFIG_IWL4965_HT
6663         /* if we are switching from ht to 2.4 clear flags
6664          * from any ht related info since 2.4 does not
6665          * support ht */
6666         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6667 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6668             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6669 #endif
6670         )
6671                 priv->staging_rxon.flags = 0;
6672 #endif /* CONFIG_IWL4965_HT */
6673
6674         iwlcore_set_rxon_channel(priv, conf->channel->band,
6675                 ieee80211_frequency_to_channel(conf->channel->center_freq));
6676
6677         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6678
6679         /* The list of supported rates and rate mask can be different
6680          * for each band; since the band may have changed, reset
6681          * the rate mask to what mac80211 lists */
6682         iwl4965_set_rate(priv);
6683
6684         spin_unlock_irqrestore(&priv->lock, flags);
6685
6686 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6687         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6688                 iwl4965_hw_channel_switch(priv, conf->channel);
6689                 goto out;
6690         }
6691 #endif
6692
6693         if (priv->cfg->ops->lib->radio_kill_sw)
6694                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
6695
6696         if (!conf->radio_enabled) {
6697                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6698                 goto out;
6699         }
6700
6701         if (iwl4965_is_rfkill(priv)) {
6702                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6703                 ret = -EIO;
6704                 goto out;
6705         }
6706
6707         iwl4965_set_rate(priv);
6708
6709         if (memcmp(&priv->active_rxon,
6710                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6711                 iwl4965_commit_rxon(priv);
6712         else
6713                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6714
6715         IWL_DEBUG_MAC80211("leave\n");
6716
6717 out:
6718         clear_bit(STATUS_CONF_PENDING, &priv->status);
6719         mutex_unlock(&priv->mutex);
6720         return ret;
6721 }
6722
6723 static void iwl4965_config_ap(struct iwl_priv *priv)
6724 {
6725         int ret = 0;
6726
6727         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6728                 return;
6729
6730         /* The following should be done only at AP bring up */
6731         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6732
6733                 /* RXON - unassoc (to set timing command) */
6734                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6735                 iwl4965_commit_rxon(priv);
6736
6737                 /* RXON Timing */
6738                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6739                 iwl4965_setup_rxon_timing(priv);
6740                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6741                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6742                 if (ret)
6743                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6744                                         "Attempting to continue.\n");
6745
6746                 iwl4965_set_rxon_chain(priv);
6747
6748                 /* FIXME: what should be the assoc_id for AP? */
6749                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6750                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6751                         priv->staging_rxon.flags |=
6752                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6753                 else
6754                         priv->staging_rxon.flags &=
6755                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6756
6757                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6758                         if (priv->assoc_capability &
6759                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6760                                 priv->staging_rxon.flags |=
6761                                         RXON_FLG_SHORT_SLOT_MSK;
6762                         else
6763                                 priv->staging_rxon.flags &=
6764                                         ~RXON_FLG_SHORT_SLOT_MSK;
6765
6766                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6767                                 priv->staging_rxon.flags &=
6768                                         ~RXON_FLG_SHORT_SLOT_MSK;
6769                 }
6770                 /* restore RXON assoc */
6771                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6772                 iwl4965_commit_rxon(priv);
6773                 iwl4965_activate_qos(priv, 1);
6774                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6775         }
6776         iwl4965_send_beacon_cmd(priv);
6777
6778         /* FIXME - we need to add code here to detect a totally new
6779          * configuration, reset the AP, unassoc, rxon timing, assoc,
6780          * clear sta table, add BCAST sta... */
6781 }
6782
6783 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6784                                         struct ieee80211_vif *vif,
6785                                     struct ieee80211_if_conf *conf)
6786 {
6787         struct iwl_priv *priv = hw->priv;
6788         DECLARE_MAC_BUF(mac);
6789         unsigned long flags;
6790         int rc;
6791
6792         if (conf == NULL)
6793                 return -EIO;
6794
6795         if (priv->vif != vif) {
6796                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6797                 mutex_unlock(&priv->mutex);
6798                 return 0;
6799         }
6800
6801         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6802             (!conf->beacon || !conf->ssid_len)) {
6803                 IWL_DEBUG_MAC80211
6804                     ("Leaving in AP mode because HostAPD is not ready.\n");
6805                 return 0;
6806         }
6807
6808         if (!iwl4965_is_alive(priv))
6809                 return -EAGAIN;
6810
6811         mutex_lock(&priv->mutex);
6812
6813         if (conf->bssid)
6814                 IWL_DEBUG_MAC80211("bssid: %s\n",
6815                                    print_mac(mac, conf->bssid));
6816
6817 /*
6818  * very dubious code was here; the probe filtering flag is never set:
6819  *
6820         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6821             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6822  */
6823
6824         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6825                 if (!conf->bssid) {
6826                         conf->bssid = priv->mac_addr;
6827                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6828                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6829                                            print_mac(mac, conf->bssid));
6830                 }
6831                 if (priv->ibss_beacon)
6832                         dev_kfree_skb(priv->ibss_beacon);
6833
6834                 priv->ibss_beacon = conf->beacon;
6835         }
6836
6837         if (iwl4965_is_rfkill(priv))
6838                 goto done;
6839
6840         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6841             !is_multicast_ether_addr(conf->bssid)) {
6842                 /* If there is currently a HW scan going on in the background
6843                  * then we need to cancel it else the RXON below will fail. */
6844                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6845                         IWL_WARNING("Aborted scan still in progress "
6846                                     "after 100ms\n");
6847                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6848                         mutex_unlock(&priv->mutex);
6849                         return -EAGAIN;
6850                 }
6851                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6852
6853                 /* TODO: Audit driver for usage of these members and see
6854                  * if mac80211 deprecates them (priv->bssid looks like it
6855                  * shouldn't be there, but I haven't scanned the IBSS code
6856                  * to verify) - jpk */
6857                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6858
6859                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6860                         iwl4965_config_ap(priv);
6861                 else {
6862                         rc = iwl4965_commit_rxon(priv);
6863                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6864                                 iwl4965_rxon_add_station(
6865                                         priv, priv->active_rxon.bssid_addr, 1);
6866                 }
6867
6868         } else {
6869                 iwl4965_scan_cancel_timeout(priv, 100);
6870                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6871                 iwl4965_commit_rxon(priv);
6872         }
6873
6874  done:
6875         spin_lock_irqsave(&priv->lock, flags);
6876         if (!conf->ssid_len)
6877                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6878         else
6879                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6880
6881         priv->essid_len = conf->ssid_len;
6882         spin_unlock_irqrestore(&priv->lock, flags);
6883
6884         IWL_DEBUG_MAC80211("leave\n");
6885         mutex_unlock(&priv->mutex);
6886
6887         return 0;
6888 }
6889
6890 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6891                                  unsigned int changed_flags,
6892                                  unsigned int *total_flags,
6893                                  int mc_count, struct dev_addr_list *mc_list)
6894 {
6895         /*
6896          * XXX: dummy
6897          * see also iwl4965_connection_init_rx_config
6898          */
6899         *total_flags = 0;
6900 }
6901
6902 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6903                                      struct ieee80211_if_init_conf *conf)
6904 {
6905         struct iwl_priv *priv = hw->priv;
6906
6907         IWL_DEBUG_MAC80211("enter\n");
6908
6909         mutex_lock(&priv->mutex);
6910
6911         if (iwl4965_is_ready_rf(priv)) {
6912                 iwl4965_scan_cancel_timeout(priv, 100);
6913                 cancel_delayed_work(&priv->post_associate);
6914                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6915                 iwl4965_commit_rxon(priv);
6916         }
6917         if (priv->vif == conf->vif) {
6918                 priv->vif = NULL;
6919                 memset(priv->bssid, 0, ETH_ALEN);
6920                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6921                 priv->essid_len = 0;
6922         }
6923         mutex_unlock(&priv->mutex);
6924
6925         IWL_DEBUG_MAC80211("leave\n");
6926
6927 }
6928
6929 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6930                                      struct ieee80211_vif *vif,
6931                                      struct ieee80211_bss_conf *bss_conf,
6932                                      u32 changes)
6933 {
6934         struct iwl_priv *priv = hw->priv;
6935
6936         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6937                 if (bss_conf->use_short_preamble)
6938                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6939                 else
6940                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6941         }
6942
6943         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6944                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6945                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6946                 else
6947                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6948         }
6949
6950         if (changes & BSS_CHANGED_ASSOC) {
6951                 /*
6952                  * TODO:
6953                  * do stuff instead of sniffing assoc resp
6954                  */
6955         }
6956
6957         if (iwl4965_is_associated(priv))
6958                 iwl4965_send_rxon_assoc(priv);
6959 }
6960
6961 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6962 {
6963         int rc = 0;
6964         unsigned long flags;
6965         struct iwl_priv *priv = hw->priv;
6966
6967         IWL_DEBUG_MAC80211("enter\n");
6968
6969         mutex_lock(&priv->mutex);
6970         spin_lock_irqsave(&priv->lock, flags);
6971
6972         if (!iwl4965_is_ready_rf(priv)) {
6973                 rc = -EIO;
6974                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6975                 goto out_unlock;
6976         }
6977
6978         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
6979                 rc = -EIO;
6980                 IWL_ERROR("ERROR: APs don't scan\n");
6981                 goto out_unlock;
6982         }
6983
6984         /* we don't schedule scan within next_scan_jiffies period */
6985         if (priv->next_scan_jiffies &&
6986                         time_after(priv->next_scan_jiffies, jiffies)) {
6987                 rc = -EAGAIN;
6988                 goto out_unlock;
6989         }
6990         /* if we just finished scan ask for delay */
6991         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6992                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
6993                 rc = -EAGAIN;
6994                 goto out_unlock;
6995         }
6996         if (len) {
6997                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6998                                iwl4965_escape_essid(ssid, len), (int)len);
6999
7000                 priv->one_direct_scan = 1;
7001                 priv->direct_ssid_len = (u8)
7002                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7003                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7004         } else
7005                 priv->one_direct_scan = 0;
7006
7007         rc = iwl4965_scan_initiate(priv);
7008
7009         IWL_DEBUG_MAC80211("leave\n");
7010
7011 out_unlock:
7012         spin_unlock_irqrestore(&priv->lock, flags);
7013         mutex_unlock(&priv->mutex);
7014
7015         return rc;
7016 }
7017
7018 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
7019                         struct ieee80211_key_conf *keyconf, const u8 *addr,
7020                         u32 iv32, u16 *phase1key)
7021 {
7022         struct iwl_priv *priv = hw->priv;
7023         u8 sta_id = IWL_INVALID_STATION;
7024         unsigned long flags;
7025         __le16 key_flags = 0;
7026         int i;
7027         DECLARE_MAC_BUF(mac);
7028
7029         IWL_DEBUG_MAC80211("enter\n");
7030
7031         sta_id = iwl4965_hw_find_station(priv, addr);
7032         if (sta_id == IWL_INVALID_STATION) {
7033                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7034                                    print_mac(mac, addr));
7035                 return;
7036         }
7037
7038         iwl4965_scan_cancel_timeout(priv, 100);
7039
7040         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
7041         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
7042         key_flags &= ~STA_KEY_FLG_INVALID;
7043
7044         if (sta_id == priv->hw_setting.bcast_sta_id)
7045                 key_flags |= STA_KEY_MULTICAST_MSK;
7046
7047         spin_lock_irqsave(&priv->sta_lock, flags);
7048
7049         priv->stations[sta_id].sta.key.key_offset =
7050                                         (sta_id % STA_KEY_MAX_NUM);/* FIXME */
7051         priv->stations[sta_id].sta.key.key_flags = key_flags;
7052         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
7053
7054         for (i = 0; i < 5; i++)
7055                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
7056                         cpu_to_le16(phase1key[i]);
7057
7058         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
7059         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7060
7061         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
7062
7063         spin_unlock_irqrestore(&priv->sta_lock, flags);
7064
7065         IWL_DEBUG_MAC80211("leave\n");
7066 }
7067
7068 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7069                            const u8 *local_addr, const u8 *addr,
7070                            struct ieee80211_key_conf *key)
7071 {
7072         struct iwl_priv *priv = hw->priv;
7073         DECLARE_MAC_BUF(mac);
7074         int ret = 0;
7075         u8 sta_id = IWL_INVALID_STATION;
7076         u8 static_key;
7077
7078         IWL_DEBUG_MAC80211("enter\n");
7079
7080         if (!priv->cfg->mod_params->hw_crypto) {
7081                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7082                 return -EOPNOTSUPP;
7083         }
7084
7085         if (is_zero_ether_addr(addr))
7086                 /* only support pairwise keys */
7087                 return -EOPNOTSUPP;
7088
7089         /* FIXME: need to differenciate between static and dynamic key
7090          * in the level of mac80211 */
7091         static_key = !iwl4965_is_associated(priv);
7092
7093         if (!static_key) {
7094                 sta_id = iwl4965_hw_find_station(priv, addr);
7095                 if (sta_id == IWL_INVALID_STATION) {
7096                         IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7097                                            print_mac(mac, addr));
7098                         return -EINVAL;
7099                 }
7100         }
7101
7102         iwl4965_scan_cancel_timeout(priv, 100);
7103
7104         switch (cmd) {
7105         case SET_KEY:
7106                 if (static_key)
7107                         ret = iwl4965_set_static_key(priv, key);
7108                 else
7109                         ret = iwl4965_set_dynamic_key(priv, key, sta_id);
7110
7111                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
7112                 break;
7113         case DISABLE_KEY:
7114                 if (static_key)
7115                         ret = iwl4965_remove_static_key(priv);
7116                 else
7117                         ret = iwl4965_clear_sta_key_info(priv, sta_id);
7118
7119                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7120                 break;
7121         default:
7122                 ret = -EINVAL;
7123         }
7124
7125         IWL_DEBUG_MAC80211("leave\n");
7126
7127         return ret;
7128 }
7129
7130 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7131                            const struct ieee80211_tx_queue_params *params)
7132 {
7133         struct iwl_priv *priv = hw->priv;
7134         unsigned long flags;
7135         int q;
7136
7137         IWL_DEBUG_MAC80211("enter\n");
7138
7139         if (!iwl4965_is_ready_rf(priv)) {
7140                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7141                 return -EIO;
7142         }
7143
7144         if (queue >= AC_NUM) {
7145                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7146                 return 0;
7147         }
7148
7149         if (!priv->qos_data.qos_enable) {
7150                 priv->qos_data.qos_active = 0;
7151                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7152                 return 0;
7153         }
7154         q = AC_NUM - 1 - queue;
7155
7156         spin_lock_irqsave(&priv->lock, flags);
7157
7158         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7159         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7160         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7161         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7162                         cpu_to_le16((params->txop * 32));
7163
7164         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7165         priv->qos_data.qos_active = 1;
7166
7167         spin_unlock_irqrestore(&priv->lock, flags);
7168
7169         mutex_lock(&priv->mutex);
7170         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7171                 iwl4965_activate_qos(priv, 1);
7172         else if (priv->assoc_id && iwl4965_is_associated(priv))
7173                 iwl4965_activate_qos(priv, 0);
7174
7175         mutex_unlock(&priv->mutex);
7176
7177         IWL_DEBUG_MAC80211("leave\n");
7178         return 0;
7179 }
7180
7181 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7182                                 struct ieee80211_tx_queue_stats *stats)
7183 {
7184         struct iwl_priv *priv = hw->priv;
7185         int i, avail;
7186         struct iwl4965_tx_queue *txq;
7187         struct iwl4965_queue *q;
7188         unsigned long flags;
7189
7190         IWL_DEBUG_MAC80211("enter\n");
7191
7192         if (!iwl4965_is_ready_rf(priv)) {
7193                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7194                 return -EIO;
7195         }
7196
7197         spin_lock_irqsave(&priv->lock, flags);
7198
7199         for (i = 0; i < AC_NUM; i++) {
7200                 txq = &priv->txq[i];
7201                 q = &txq->q;
7202                 avail = iwl4965_queue_space(q);
7203
7204                 stats->data[i].len = q->n_window - avail;
7205                 stats->data[i].limit = q->n_window - q->high_mark;
7206                 stats->data[i].count = q->n_window;
7207
7208         }
7209         spin_unlock_irqrestore(&priv->lock, flags);
7210
7211         IWL_DEBUG_MAC80211("leave\n");
7212
7213         return 0;
7214 }
7215
7216 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7217                              struct ieee80211_low_level_stats *stats)
7218 {
7219         IWL_DEBUG_MAC80211("enter\n");
7220         IWL_DEBUG_MAC80211("leave\n");
7221
7222         return 0;
7223 }
7224
7225 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7226 {
7227         IWL_DEBUG_MAC80211("enter\n");
7228         IWL_DEBUG_MAC80211("leave\n");
7229
7230         return 0;
7231 }
7232
7233 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7234 {
7235         struct iwl_priv *priv = hw->priv;
7236         unsigned long flags;
7237
7238         mutex_lock(&priv->mutex);
7239         IWL_DEBUG_MAC80211("enter\n");
7240
7241         priv->lq_mngr.lq_ready = 0;
7242 #ifdef CONFIG_IWL4965_HT
7243         spin_lock_irqsave(&priv->lock, flags);
7244         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7245         spin_unlock_irqrestore(&priv->lock, flags);
7246 #endif /* CONFIG_IWL4965_HT */
7247
7248         iwlcore_reset_qos(priv);
7249
7250         cancel_delayed_work(&priv->post_associate);
7251
7252         spin_lock_irqsave(&priv->lock, flags);
7253         priv->assoc_id = 0;
7254         priv->assoc_capability = 0;
7255         priv->call_post_assoc_from_beacon = 0;
7256         priv->assoc_station_added = 0;
7257
7258         /* new association get rid of ibss beacon skb */
7259         if (priv->ibss_beacon)
7260                 dev_kfree_skb(priv->ibss_beacon);
7261
7262         priv->ibss_beacon = NULL;
7263
7264         priv->beacon_int = priv->hw->conf.beacon_int;
7265         priv->timestamp1 = 0;
7266         priv->timestamp0 = 0;
7267         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7268                 priv->beacon_int = 0;
7269
7270         spin_unlock_irqrestore(&priv->lock, flags);
7271
7272         if (!iwl4965_is_ready_rf(priv)) {
7273                 IWL_DEBUG_MAC80211("leave - not ready\n");
7274                 mutex_unlock(&priv->mutex);
7275                 return;
7276         }
7277
7278         /* we are restarting association process
7279          * clear RXON_FILTER_ASSOC_MSK bit
7280          */
7281         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7282                 iwl4965_scan_cancel_timeout(priv, 100);
7283                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7284                 iwl4965_commit_rxon(priv);
7285         }
7286
7287         /* Per mac80211.h: This is only used in IBSS mode... */
7288         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7289
7290                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7291                 mutex_unlock(&priv->mutex);
7292                 return;
7293         }
7294
7295         priv->only_active_channel = 0;
7296
7297         iwl4965_set_rate(priv);
7298
7299         mutex_unlock(&priv->mutex);
7300
7301         IWL_DEBUG_MAC80211("leave\n");
7302 }
7303
7304 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7305                                  struct ieee80211_tx_control *control)
7306 {
7307         struct iwl_priv *priv = hw->priv;
7308         unsigned long flags;
7309
7310         mutex_lock(&priv->mutex);
7311         IWL_DEBUG_MAC80211("enter\n");
7312
7313         if (!iwl4965_is_ready_rf(priv)) {
7314                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7315                 mutex_unlock(&priv->mutex);
7316                 return -EIO;
7317         }
7318
7319         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7320                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7321                 mutex_unlock(&priv->mutex);
7322                 return -EIO;
7323         }
7324
7325         spin_lock_irqsave(&priv->lock, flags);
7326
7327         if (priv->ibss_beacon)
7328                 dev_kfree_skb(priv->ibss_beacon);
7329
7330         priv->ibss_beacon = skb;
7331
7332         priv->assoc_id = 0;
7333
7334         IWL_DEBUG_MAC80211("leave\n");
7335         spin_unlock_irqrestore(&priv->lock, flags);
7336
7337         iwlcore_reset_qos(priv);
7338
7339         queue_work(priv->workqueue, &priv->post_associate.work);
7340
7341         mutex_unlock(&priv->mutex);
7342
7343         return 0;
7344 }
7345
7346 #ifdef CONFIG_IWL4965_HT
7347
7348 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7349                                  struct iwl_priv *priv)
7350 {
7351         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7352         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7353         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7354
7355         IWL_DEBUG_MAC80211("enter: \n");
7356
7357         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7358                 iwl_conf->is_ht = 0;
7359                 return;
7360         }
7361
7362         iwl_conf->is_ht = 1;
7363         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7364
7365         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7366                 iwl_conf->sgf |= 0x1;
7367         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7368                 iwl_conf->sgf |= 0x2;
7369
7370         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7371         iwl_conf->max_amsdu_size =
7372                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7373
7374         iwl_conf->supported_chan_width =
7375                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7376         iwl_conf->extension_chan_offset =
7377                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7378         /* If no above or below channel supplied disable FAT channel */
7379         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7380             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7381                 iwl_conf->supported_chan_width = 0;
7382
7383         iwl_conf->tx_mimo_ps_mode =
7384                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7385         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7386
7387         iwl_conf->control_channel = ht_bss_conf->primary_channel;
7388         iwl_conf->tx_chan_width =
7389                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7390         iwl_conf->ht_protection =
7391                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7392         iwl_conf->non_GF_STA_present =
7393                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7394
7395         IWL_DEBUG_MAC80211("control channel %d\n",
7396                 iwl_conf->control_channel);
7397         IWL_DEBUG_MAC80211("leave\n");
7398 }
7399
7400 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7401                                struct ieee80211_conf *conf)
7402 {
7403         struct iwl_priv *priv = hw->priv;
7404
7405         IWL_DEBUG_MAC80211("enter: \n");
7406
7407         iwl4965_ht_info_fill(conf, priv);
7408         iwl4965_set_rxon_chain(priv);
7409
7410         if (priv && priv->assoc_id &&
7411             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
7412                 unsigned long flags;
7413
7414                 spin_lock_irqsave(&priv->lock, flags);
7415                 if (priv->beacon_int)
7416                         queue_work(priv->workqueue, &priv->post_associate.work);
7417                 else
7418                         priv->call_post_assoc_from_beacon = 1;
7419                 spin_unlock_irqrestore(&priv->lock, flags);
7420         }
7421
7422         IWL_DEBUG_MAC80211("leave:\n");
7423         return 0;
7424 }
7425
7426 #endif /*CONFIG_IWL4965_HT*/
7427
7428 /*****************************************************************************
7429  *
7430  * sysfs attributes
7431  *
7432  *****************************************************************************/
7433
7434 #ifdef CONFIG_IWLWIFI_DEBUG
7435
7436 /*
7437  * The following adds a new attribute to the sysfs representation
7438  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7439  * used for controlling the debug level.
7440  *
7441  * See the level definitions in iwl for details.
7442  */
7443
7444 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7445 {
7446         return sprintf(buf, "0x%08X\n", iwl_debug_level);
7447 }
7448 static ssize_t store_debug_level(struct device_driver *d,
7449                                  const char *buf, size_t count)
7450 {
7451         char *p = (char *)buf;
7452         u32 val;
7453
7454         val = simple_strtoul(p, &p, 0);
7455         if (p == buf)
7456                 printk(KERN_INFO DRV_NAME
7457                        ": %s is not in hex or decimal form.\n", buf);
7458         else
7459                 iwl_debug_level = val;
7460
7461         return strnlen(buf, count);
7462 }
7463
7464 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7465                    show_debug_level, store_debug_level);
7466
7467 #endif /* CONFIG_IWLWIFI_DEBUG */
7468
7469
7470 static ssize_t show_temperature(struct device *d,
7471                                 struct device_attribute *attr, char *buf)
7472 {
7473         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7474
7475         if (!iwl4965_is_alive(priv))
7476                 return -EAGAIN;
7477
7478         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7479 }
7480
7481 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7482
7483 static ssize_t show_rs_window(struct device *d,
7484                               struct device_attribute *attr,
7485                               char *buf)
7486 {
7487         struct iwl_priv *priv = d->driver_data;
7488         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7489 }
7490 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7491
7492 static ssize_t show_tx_power(struct device *d,
7493                              struct device_attribute *attr, char *buf)
7494 {
7495         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7496         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7497 }
7498
7499 static ssize_t store_tx_power(struct device *d,
7500                               struct device_attribute *attr,
7501                               const char *buf, size_t count)
7502 {
7503         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7504         char *p = (char *)buf;
7505         u32 val;
7506
7507         val = simple_strtoul(p, &p, 10);
7508         if (p == buf)
7509                 printk(KERN_INFO DRV_NAME
7510                        ": %s is not in decimal form.\n", buf);
7511         else
7512                 iwl4965_hw_reg_set_txpower(priv, val);
7513
7514         return count;
7515 }
7516
7517 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7518
7519 static ssize_t show_flags(struct device *d,
7520                           struct device_attribute *attr, char *buf)
7521 {
7522         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7523
7524         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7525 }
7526
7527 static ssize_t store_flags(struct device *d,
7528                            struct device_attribute *attr,
7529                            const char *buf, size_t count)
7530 {
7531         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7532         u32 flags = simple_strtoul(buf, NULL, 0);
7533
7534         mutex_lock(&priv->mutex);
7535         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7536                 /* Cancel any currently running scans... */
7537                 if (iwl4965_scan_cancel_timeout(priv, 100))
7538                         IWL_WARNING("Could not cancel scan.\n");
7539                 else {
7540                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7541                                        flags);
7542                         priv->staging_rxon.flags = cpu_to_le32(flags);
7543                         iwl4965_commit_rxon(priv);
7544                 }
7545         }
7546         mutex_unlock(&priv->mutex);
7547
7548         return count;
7549 }
7550
7551 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7552
7553 static ssize_t show_filter_flags(struct device *d,
7554                                  struct device_attribute *attr, char *buf)
7555 {
7556         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7557
7558         return sprintf(buf, "0x%04X\n",
7559                 le32_to_cpu(priv->active_rxon.filter_flags));
7560 }
7561
7562 static ssize_t store_filter_flags(struct device *d,
7563                                   struct device_attribute *attr,
7564                                   const char *buf, size_t count)
7565 {
7566         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7567         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7568
7569         mutex_lock(&priv->mutex);
7570         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7571                 /* Cancel any currently running scans... */
7572                 if (iwl4965_scan_cancel_timeout(priv, 100))
7573                         IWL_WARNING("Could not cancel scan.\n");
7574                 else {
7575                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7576                                        "0x%04X\n", filter_flags);
7577                         priv->staging_rxon.filter_flags =
7578                                 cpu_to_le32(filter_flags);
7579                         iwl4965_commit_rxon(priv);
7580                 }
7581         }
7582         mutex_unlock(&priv->mutex);
7583
7584         return count;
7585 }
7586
7587 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7588                    store_filter_flags);
7589
7590 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7591
7592 static ssize_t show_measurement(struct device *d,
7593                                 struct device_attribute *attr, char *buf)
7594 {
7595         struct iwl_priv *priv = dev_get_drvdata(d);
7596         struct iwl4965_spectrum_notification measure_report;
7597         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7598         u8 *data = (u8 *) & measure_report;
7599         unsigned long flags;
7600
7601         spin_lock_irqsave(&priv->lock, flags);
7602         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7603                 spin_unlock_irqrestore(&priv->lock, flags);
7604                 return 0;
7605         }
7606         memcpy(&measure_report, &priv->measure_report, size);
7607         priv->measurement_status = 0;
7608         spin_unlock_irqrestore(&priv->lock, flags);
7609
7610         while (size && (PAGE_SIZE - len)) {
7611                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7612                                    PAGE_SIZE - len, 1);
7613                 len = strlen(buf);
7614                 if (PAGE_SIZE - len)
7615                         buf[len++] = '\n';
7616
7617                 ofs += 16;
7618                 size -= min(size, 16U);
7619         }
7620
7621         return len;
7622 }
7623
7624 static ssize_t store_measurement(struct device *d,
7625                                  struct device_attribute *attr,
7626                                  const char *buf, size_t count)
7627 {
7628         struct iwl_priv *priv = dev_get_drvdata(d);
7629         struct ieee80211_measurement_params params = {
7630                 .channel = le16_to_cpu(priv->active_rxon.channel),
7631                 .start_time = cpu_to_le64(priv->last_tsf),
7632                 .duration = cpu_to_le16(1),
7633         };
7634         u8 type = IWL_MEASURE_BASIC;
7635         u8 buffer[32];
7636         u8 channel;
7637
7638         if (count) {
7639                 char *p = buffer;
7640                 strncpy(buffer, buf, min(sizeof(buffer), count));
7641                 channel = simple_strtoul(p, NULL, 0);
7642                 if (channel)
7643                         params.channel = channel;
7644
7645                 p = buffer;
7646                 while (*p && *p != ' ')
7647                         p++;
7648                 if (*p)
7649                         type = simple_strtoul(p + 1, NULL, 0);
7650         }
7651
7652         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7653                        "channel %d (for '%s')\n", type, params.channel, buf);
7654         iwl4965_get_measurement(priv, &params, type);
7655
7656         return count;
7657 }
7658
7659 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7660                    show_measurement, store_measurement);
7661 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7662
7663 static ssize_t store_retry_rate(struct device *d,
7664                                 struct device_attribute *attr,
7665                                 const char *buf, size_t count)
7666 {
7667         struct iwl_priv *priv = dev_get_drvdata(d);
7668
7669         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7670         if (priv->retry_rate <= 0)
7671                 priv->retry_rate = 1;
7672
7673         return count;
7674 }
7675
7676 static ssize_t show_retry_rate(struct device *d,
7677                                struct device_attribute *attr, char *buf)
7678 {
7679         struct iwl_priv *priv = dev_get_drvdata(d);
7680         return sprintf(buf, "%d", priv->retry_rate);
7681 }
7682
7683 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7684                    store_retry_rate);
7685
7686 static ssize_t store_power_level(struct device *d,
7687                                  struct device_attribute *attr,
7688                                  const char *buf, size_t count)
7689 {
7690         struct iwl_priv *priv = dev_get_drvdata(d);
7691         int rc;
7692         int mode;
7693
7694         mode = simple_strtoul(buf, NULL, 0);
7695         mutex_lock(&priv->mutex);
7696
7697         if (!iwl4965_is_ready(priv)) {
7698                 rc = -EAGAIN;
7699                 goto out;
7700         }
7701
7702         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7703                 mode = IWL_POWER_AC;
7704         else
7705                 mode |= IWL_POWER_ENABLED;
7706
7707         if (mode != priv->power_mode) {
7708                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7709                 if (rc) {
7710                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7711                         goto out;
7712                 }
7713                 priv->power_mode = mode;
7714         }
7715
7716         rc = count;
7717
7718  out:
7719         mutex_unlock(&priv->mutex);
7720         return rc;
7721 }
7722
7723 #define MAX_WX_STRING 80
7724
7725 /* Values are in microsecond */
7726 static const s32 timeout_duration[] = {
7727         350000,
7728         250000,
7729         75000,
7730         37000,
7731         25000,
7732 };
7733 static const s32 period_duration[] = {
7734         400000,
7735         700000,
7736         1000000,
7737         1000000,
7738         1000000
7739 };
7740
7741 static ssize_t show_power_level(struct device *d,
7742                                 struct device_attribute *attr, char *buf)
7743 {
7744         struct iwl_priv *priv = dev_get_drvdata(d);
7745         int level = IWL_POWER_LEVEL(priv->power_mode);
7746         char *p = buf;
7747
7748         p += sprintf(p, "%d ", level);
7749         switch (level) {
7750         case IWL_POWER_MODE_CAM:
7751         case IWL_POWER_AC:
7752                 p += sprintf(p, "(AC)");
7753                 break;
7754         case IWL_POWER_BATTERY:
7755                 p += sprintf(p, "(BATTERY)");
7756                 break;
7757         default:
7758                 p += sprintf(p,
7759                              "(Timeout %dms, Period %dms)",
7760                              timeout_duration[level - 1] / 1000,
7761                              period_duration[level - 1] / 1000);
7762         }
7763
7764         if (!(priv->power_mode & IWL_POWER_ENABLED))
7765                 p += sprintf(p, " OFF\n");
7766         else
7767                 p += sprintf(p, " \n");
7768
7769         return (p - buf + 1);
7770
7771 }
7772
7773 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7774                    store_power_level);
7775
7776 static ssize_t show_channels(struct device *d,
7777                              struct device_attribute *attr, char *buf)
7778 {
7779         /* all this shit doesn't belong into sysfs anyway */
7780         return 0;
7781 }
7782
7783 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7784
7785 static ssize_t show_statistics(struct device *d,
7786                                struct device_attribute *attr, char *buf)
7787 {
7788         struct iwl_priv *priv = dev_get_drvdata(d);
7789         u32 size = sizeof(struct iwl4965_notif_statistics);
7790         u32 len = 0, ofs = 0;
7791         u8 *data = (u8 *) & priv->statistics;
7792         int rc = 0;
7793
7794         if (!iwl4965_is_alive(priv))
7795                 return -EAGAIN;
7796
7797         mutex_lock(&priv->mutex);
7798         rc = iwl4965_send_statistics_request(priv);
7799         mutex_unlock(&priv->mutex);
7800
7801         if (rc) {
7802                 len = sprintf(buf,
7803                               "Error sending statistics request: 0x%08X\n", rc);
7804                 return len;
7805         }
7806
7807         while (size && (PAGE_SIZE - len)) {
7808                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7809                                    PAGE_SIZE - len, 1);
7810                 len = strlen(buf);
7811                 if (PAGE_SIZE - len)
7812                         buf[len++] = '\n';
7813
7814                 ofs += 16;
7815                 size -= min(size, 16U);
7816         }
7817
7818         return len;
7819 }
7820
7821 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7822
7823 static ssize_t show_antenna(struct device *d,
7824                             struct device_attribute *attr, char *buf)
7825 {
7826         struct iwl_priv *priv = dev_get_drvdata(d);
7827
7828         if (!iwl4965_is_alive(priv))
7829                 return -EAGAIN;
7830
7831         return sprintf(buf, "%d\n", priv->antenna);
7832 }
7833
7834 static ssize_t store_antenna(struct device *d,
7835                              struct device_attribute *attr,
7836                              const char *buf, size_t count)
7837 {
7838         int ant;
7839         struct iwl_priv *priv = dev_get_drvdata(d);
7840
7841         if (count == 0)
7842                 return 0;
7843
7844         if (sscanf(buf, "%1i", &ant) != 1) {
7845                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7846                 return count;
7847         }
7848
7849         if ((ant >= 0) && (ant <= 2)) {
7850                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7851                 priv->antenna = (enum iwl4965_antenna)ant;
7852         } else
7853                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7854
7855
7856         return count;
7857 }
7858
7859 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7860
7861 static ssize_t show_status(struct device *d,
7862                            struct device_attribute *attr, char *buf)
7863 {
7864         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7865         if (!iwl4965_is_alive(priv))
7866                 return -EAGAIN;
7867         return sprintf(buf, "0x%08x\n", (int)priv->status);
7868 }
7869
7870 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7871
7872 static ssize_t dump_error_log(struct device *d,
7873                               struct device_attribute *attr,
7874                               const char *buf, size_t count)
7875 {
7876         char *p = (char *)buf;
7877
7878         if (p[0] == '1')
7879                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7880
7881         return strnlen(buf, count);
7882 }
7883
7884 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7885
7886 static ssize_t dump_event_log(struct device *d,
7887                               struct device_attribute *attr,
7888                               const char *buf, size_t count)
7889 {
7890         char *p = (char *)buf;
7891
7892         if (p[0] == '1')
7893                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7894
7895         return strnlen(buf, count);
7896 }
7897
7898 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7899
7900 /*****************************************************************************
7901  *
7902  * driver setup and teardown
7903  *
7904  *****************************************************************************/
7905
7906 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7907 {
7908         priv->workqueue = create_workqueue(DRV_NAME);
7909
7910         init_waitqueue_head(&priv->wait_command_queue);
7911
7912         INIT_WORK(&priv->up, iwl4965_bg_up);
7913         INIT_WORK(&priv->restart, iwl4965_bg_restart);
7914         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7915         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7916         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7917         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7918         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7919         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7920         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7921         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7922         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7923         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7924
7925         iwl4965_hw_setup_deferred_work(priv);
7926
7927         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7928                      iwl4965_irq_tasklet, (unsigned long)priv);
7929 }
7930
7931 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7932 {
7933         iwl4965_hw_cancel_deferred_work(priv);
7934
7935         cancel_delayed_work_sync(&priv->init_alive_start);
7936         cancel_delayed_work(&priv->scan_check);
7937         cancel_delayed_work(&priv->alive_start);
7938         cancel_delayed_work(&priv->post_associate);
7939         cancel_work_sync(&priv->beacon_update);
7940 }
7941
7942 static struct attribute *iwl4965_sysfs_entries[] = {
7943         &dev_attr_antenna.attr,
7944         &dev_attr_channels.attr,
7945         &dev_attr_dump_errors.attr,
7946         &dev_attr_dump_events.attr,
7947         &dev_attr_flags.attr,
7948         &dev_attr_filter_flags.attr,
7949 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7950         &dev_attr_measurement.attr,
7951 #endif
7952         &dev_attr_power_level.attr,
7953         &dev_attr_retry_rate.attr,
7954         &dev_attr_rs_window.attr,
7955         &dev_attr_statistics.attr,
7956         &dev_attr_status.attr,
7957         &dev_attr_temperature.attr,
7958         &dev_attr_tx_power.attr,
7959
7960         NULL
7961 };
7962
7963 static struct attribute_group iwl4965_attribute_group = {
7964         .name = NULL,           /* put in device directory */
7965         .attrs = iwl4965_sysfs_entries,
7966 };
7967
7968 static struct ieee80211_ops iwl4965_hw_ops = {
7969         .tx = iwl4965_mac_tx,
7970         .start = iwl4965_mac_start,
7971         .stop = iwl4965_mac_stop,
7972         .add_interface = iwl4965_mac_add_interface,
7973         .remove_interface = iwl4965_mac_remove_interface,
7974         .config = iwl4965_mac_config,
7975         .config_interface = iwl4965_mac_config_interface,
7976         .configure_filter = iwl4965_configure_filter,
7977         .set_key = iwl4965_mac_set_key,
7978         .update_tkip_key = iwl4965_mac_update_tkip_key,
7979         .get_stats = iwl4965_mac_get_stats,
7980         .get_tx_stats = iwl4965_mac_get_tx_stats,
7981         .conf_tx = iwl4965_mac_conf_tx,
7982         .get_tsf = iwl4965_mac_get_tsf,
7983         .reset_tsf = iwl4965_mac_reset_tsf,
7984         .beacon_update = iwl4965_mac_beacon_update,
7985         .bss_info_changed = iwl4965_bss_info_changed,
7986 #ifdef CONFIG_IWL4965_HT
7987         .conf_ht = iwl4965_mac_conf_ht,
7988         .ampdu_action = iwl4965_mac_ampdu_action,
7989 #endif  /* CONFIG_IWL4965_HT */
7990         .hw_scan = iwl4965_mac_hw_scan
7991 };
7992
7993 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7994 {
7995         int err = 0;
7996         struct iwl_priv *priv;
7997         struct ieee80211_hw *hw;
7998         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7999         DECLARE_MAC_BUF(mac);
8000
8001         /************************
8002          * 1. Allocating HW data
8003          ************************/
8004
8005         /* Disabling hardware scan means that mac80211 will perform scans
8006          * "the hard way", rather than using device's scan. */
8007         if (cfg->mod_params->disable_hw_scan) {
8008                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8009                 iwl4965_hw_ops.hw_scan = NULL;
8010         }
8011
8012         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
8013         if (!hw) {
8014                 err = -ENOMEM;
8015                 goto out;
8016         }
8017         priv = hw->priv;
8018         /* At this point both hw and priv are allocated. */
8019
8020         SET_IEEE80211_DEV(hw, &pdev->dev);
8021
8022         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8023         priv->cfg = cfg;
8024         priv->pci_dev = pdev;
8025
8026 #ifdef CONFIG_IWLWIFI_DEBUG
8027         iwl_debug_level = priv->cfg->mod_params->debug;
8028         atomic_set(&priv->restrict_refcnt, 0);
8029 #endif
8030
8031         /**************************
8032          * 2. Initializing PCI bus
8033          **************************/
8034         if (pci_enable_device(pdev)) {
8035                 err = -ENODEV;
8036                 goto out_ieee80211_free_hw;
8037         }
8038
8039         pci_set_master(pdev);
8040
8041         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8042         if (!err)
8043                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8044                 if (err) {
8045                         printk(KERN_WARNING DRV_NAME
8046                                 ": No suitable DMA available.\n");
8047                         goto out_pci_disable_device;
8048         }
8049
8050         err = pci_request_regions(pdev, DRV_NAME);
8051         if (err)
8052                 goto out_pci_disable_device;
8053
8054         pci_set_drvdata(pdev, priv);
8055
8056         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8057          * PCI Tx retries from interfering with C3 CPU state */
8058         pci_write_config_byte(pdev, 0x41, 0x00);
8059
8060         /***********************
8061          * 3. Read REV register
8062          ***********************/
8063         priv->hw_base = pci_iomap(pdev, 0, 0);
8064         if (!priv->hw_base) {
8065                 err = -ENODEV;
8066                 goto out_pci_release_regions;
8067         }
8068
8069         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8070                 (unsigned long long) pci_resource_len(pdev, 0));
8071         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8072
8073         printk(KERN_INFO DRV_NAME
8074                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8075
8076         /*****************
8077          * 4. Read EEPROM
8078          *****************/
8079         /* nic init */
8080         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8081                 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8082
8083         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8084         err = iwl_poll_bit(priv, CSR_GP_CNTRL,
8085                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8086                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8087         if (err < 0) {
8088                 IWL_DEBUG_INFO("Failed to init the card\n");
8089                 goto out_iounmap;
8090         }
8091         /* Read the EEPROM */
8092         err = iwl_eeprom_init(priv);
8093         if (err) {
8094                 IWL_ERROR("Unable to init EEPROM\n");
8095                 goto out_iounmap;
8096         }
8097         /* MAC Address location in EEPROM same for 3945/4965 */
8098         iwl_eeprom_get_mac(priv, priv->mac_addr);
8099         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8100         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8101
8102         /************************
8103          * 5. Setup HW constants
8104          ************************/
8105         /* Device-specific setup */
8106         if (iwl4965_hw_set_hw_setting(priv)) {
8107                 IWL_ERROR("failed to set hw settings\n");
8108                 goto out_iounmap;
8109         }
8110
8111         /*******************
8112          * 6. Setup hw/priv
8113          *******************/
8114
8115         err = iwl_setup(priv);
8116         if (err)
8117                 goto out_unset_hw_settings;
8118         /* At this point both hw and priv are initialized. */
8119
8120         /**********************************
8121          * 7. Initialize module parameters
8122          **********************************/
8123
8124         /* Disable radio (SW RF KILL) via parameter when loading driver */
8125         if (priv->cfg->mod_params->disable) {
8126                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8127                 IWL_DEBUG_INFO("Radio disabled.\n");
8128         }
8129
8130         if (priv->cfg->mod_params->enable_qos)
8131                 priv->qos_data.qos_enable = 1;
8132
8133         /********************
8134          * 8. Setup services
8135          ********************/
8136         iwl4965_disable_interrupts(priv);
8137
8138         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8139         if (err) {
8140                 IWL_ERROR("failed to create sysfs device attributes\n");
8141                 goto out_unset_hw_settings;
8142         }
8143
8144         err = iwl_dbgfs_register(priv, DRV_NAME);
8145         if (err) {
8146                 IWL_ERROR("failed to create debugfs files\n");
8147                 goto out_remove_sysfs;
8148         }
8149
8150         iwl4965_setup_deferred_work(priv);
8151         iwl4965_setup_rx_handlers(priv);
8152
8153         /********************
8154          * 9. Conclude
8155          ********************/
8156         pci_save_state(pdev);
8157         pci_disable_device(pdev);
8158
8159         /* notify iwlcore to init */
8160         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
8161         return 0;
8162
8163  out_remove_sysfs:
8164         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8165  out_unset_hw_settings:
8166         iwl4965_unset_hw_setting(priv);
8167  out_iounmap:
8168         pci_iounmap(pdev, priv->hw_base);
8169  out_pci_release_regions:
8170         pci_release_regions(pdev);
8171         pci_set_drvdata(pdev, NULL);
8172  out_pci_disable_device:
8173         pci_disable_device(pdev);
8174  out_ieee80211_free_hw:
8175         ieee80211_free_hw(priv->hw);
8176  out:
8177         return err;
8178 }
8179
8180 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
8181 {
8182         struct iwl_priv *priv = pci_get_drvdata(pdev);
8183         struct list_head *p, *q;
8184         int i;
8185
8186         if (!priv)
8187                 return;
8188
8189         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8190
8191         set_bit(STATUS_EXIT_PENDING, &priv->status);
8192
8193         iwl4965_down(priv);
8194
8195         /* Free MAC hash list for ADHOC */
8196         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8197                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8198                         list_del(p);
8199                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8200                 }
8201         }
8202
8203         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
8204         iwl_dbgfs_unregister(priv);
8205         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8206
8207         iwl4965_dealloc_ucode_pci(priv);
8208
8209         if (priv->rxq.bd)
8210                 iwl4965_rx_queue_free(priv, &priv->rxq);
8211         iwl4965_hw_txq_ctx_free(priv);
8212
8213         iwl4965_unset_hw_setting(priv);
8214         iwlcore_clear_stations_table(priv);
8215
8216         if (priv->mac80211_registered) {
8217                 ieee80211_unregister_hw(priv->hw);
8218                 iwl4965_rate_control_unregister(priv->hw);
8219         }
8220
8221         /*netif_stop_queue(dev); */
8222         flush_workqueue(priv->workqueue);
8223
8224         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8225          * priv->workqueue... so we can't take down the workqueue
8226          * until now... */
8227         destroy_workqueue(priv->workqueue);
8228         priv->workqueue = NULL;
8229
8230         pci_iounmap(pdev, priv->hw_base);
8231         pci_release_regions(pdev);
8232         pci_disable_device(pdev);
8233         pci_set_drvdata(pdev, NULL);
8234
8235         iwl_free_channel_map(priv);
8236         iwl4965_free_geos(priv);
8237
8238         if (priv->ibss_beacon)
8239                 dev_kfree_skb(priv->ibss_beacon);
8240
8241         ieee80211_free_hw(priv->hw);
8242 }
8243
8244 #ifdef CONFIG_PM
8245
8246 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8247 {
8248         struct iwl_priv *priv = pci_get_drvdata(pdev);
8249
8250         if (priv->is_open) {
8251                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8252                 iwl4965_mac_stop(priv->hw);
8253                 priv->is_open = 1;
8254         }
8255
8256         pci_set_power_state(pdev, PCI_D3hot);
8257
8258         return 0;
8259 }
8260
8261 static int iwl4965_pci_resume(struct pci_dev *pdev)
8262 {
8263         struct iwl_priv *priv = pci_get_drvdata(pdev);
8264
8265         pci_set_power_state(pdev, PCI_D0);
8266
8267         if (priv->is_open)
8268                 iwl4965_mac_start(priv->hw);
8269
8270         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8271         return 0;
8272 }
8273
8274 #endif /* CONFIG_PM */
8275
8276 /*****************************************************************************
8277  *
8278  * driver and module entry point
8279  *
8280  *****************************************************************************/
8281
8282 static struct pci_driver iwl4965_driver = {
8283         .name = DRV_NAME,
8284         .id_table = iwl4965_hw_card_ids,
8285         .probe = iwl4965_pci_probe,
8286         .remove = __devexit_p(iwl4965_pci_remove),
8287 #ifdef CONFIG_PM
8288         .suspend = iwl4965_pci_suspend,
8289         .resume = iwl4965_pci_resume,
8290 #endif
8291 };
8292
8293 static int __init iwl4965_init(void)
8294 {
8295
8296         int ret;
8297         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8298         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8299         ret = pci_register_driver(&iwl4965_driver);
8300         if (ret) {
8301                 IWL_ERROR("Unable to initialize PCI module\n");
8302                 return ret;
8303         }
8304 #ifdef CONFIG_IWLWIFI_DEBUG
8305         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8306         if (ret) {
8307                 IWL_ERROR("Unable to create driver sysfs file\n");
8308                 pci_unregister_driver(&iwl4965_driver);
8309                 return ret;
8310         }
8311 #endif
8312
8313         return ret;
8314 }
8315
8316 static void __exit iwl4965_exit(void)
8317 {
8318 #ifdef CONFIG_IWLWIFI_DEBUG
8319         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8320 #endif
8321         pci_unregister_driver(&iwl4965_driver);
8322 }
8323
8324 module_exit(iwl4965_exit);
8325 module_init(iwl4965_init);