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-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
  57                                   struct iwl_tx_queue *txq);
  58
  59 /******************************************************************************
  60  *
  61  * module boiler plate
  62  *
  63  ******************************************************************************/
  64
  65 /*
  66  * module name, copyright, version, etc.
  67  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  68  */
  69
  70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  71
  72 #ifdef CONFIG_IWLWIFI_DEBUG
  73 #define VD "d"
  74 #else
  75 #define VD
  76 #endif
  77
  78 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  79 #define VS "s"
  80 #else
  81 #define VS
  82 #endif
  83
  84 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  85
  86
  87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  88 MODULE_VERSION(DRV_VERSION);
  89 MODULE_AUTHOR(DRV_COPYRIGHT);
  90 MODULE_LICENSE("GPL");
  91
  92 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
  93 {
  94         u16 fc = le16_to_cpu(hdr->frame_control);
  95         int hdr_len = ieee80211_get_hdrlen(fc);
  96
  97         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
  98                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
  99         return NULL;
 100 }
 101
 102 static const struct ieee80211_supported_band *iwl_get_hw_mode(
 103                 struct iwl_priv *priv, enum ieee80211_band band)
 104 {
 105         return priv->hw->wiphy->bands[band];
 106 }
 107
 108 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 109 {
 110         /* Single white space is for Linksys APs */
 111         if (essid_len == 1 && essid[0] == ' ')
 112                 return 1;
 113
 114         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 115         while (essid_len) {
 116                 essid_len--;
 117                 if (essid[essid_len] != '\0')
 118                         return 0;
 119         }
 120
 121         return 1;
 122 }
 123
 124 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 125 {
 126         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 127         const char *s = essid;
 128         char *d = escaped;
 129
 130         if (iwl4965_is_empty_essid(essid, essid_len)) {
 131                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 132                 return escaped;
 133         }
 134
 135         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 136         while (essid_len--) {
 137                 if (*s == '\0') {
 138                         *d++ = '\\';
 139                         *d++ = '0';
 140                         s++;
 141                 } else
 142                         *d++ = *s++;
 143         }
 144         *d = '\0';
 145         return escaped;
 146 }
 147
 148
 149 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 150  * DMA services
 151  *
 152  * Theory of operation
 153  *
 154  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 155  * of buffer descriptors, each of which points to one or more data buffers for
 156  * the device to read from or fill.  Driver and device exchange status of each
 157  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 158  * entries in each circular buffer, to protect against confusing empty and full
 159  * queue states.
 160  *
 161  * The device reads or writes the data in the queues via the device's several
 162  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 163  *
 164  * For Tx queue, there are low mark and high mark limits. If, after queuing
 165  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 166  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 167  * Tx queue resumed.
 168  *
 169  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 170  * queue (#4) for sending commands to the device firmware, and 15 other
 171  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 172  *
 173  * See more detailed info in iwl-4965-hw.h.
 174  ***************************************************/
 175
 176 int iwl4965_queue_space(const struct iwl4965_queue *q)
 177 {
 178         int s = q->read_ptr - q->write_ptr;
 179
 180         if (q->read_ptr > q->write_ptr)
 181                 s -= q->n_bd;
 182
 183         if (s <= 0)
 184                 s += q->n_window;
 185         /* keep some reserve to not confuse empty and full situations */
 186         s -= 2;
 187         if (s < 0)
 188                 s = 0;
 189         return s;
 190 }
 191
 192
 193 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 194 {
 195         return q->write_ptr > q->read_ptr ?
 196                 (i >= q->read_ptr && i < q->write_ptr) :
 197                 !(i < q->read_ptr && i >= q->write_ptr);
 198 }
 199
 200 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 201 {
 202         /* This is for scan command, the big buffer at end of command array */
 203         if (is_huge)
 204                 return q->n_window;     /* must be power of 2 */
 205
 206         /* Otherwise, use normal size buffers */
 207         return index & (q->n_window - 1);
 208 }
 209
 210 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 211
 212 /*************** STATION TABLE MANAGEMENT ****
 213  * mac80211 should be examined to determine if sta_info is duplicating
 214  * the functionality provided here
 215  */
 216
 217 /**************************************************************/
 218
 219 #if 0 /* temporary disable till we add real remove station */
 220 /**
 221  * iwl4965_remove_station - Remove driver's knowledge of station.
 222  *
 223  * NOTE:  This does not remove station from device's station table.
 224  */
 225 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 226 {
 227         int index = IWL_INVALID_STATION;
 228         int i;
 229         unsigned long flags;
 230
 231         spin_lock_irqsave(&priv->sta_lock, flags);
 232
 233         if (is_ap)
 234                 index = IWL_AP_ID;
 235         else if (is_broadcast_ether_addr(addr))
 236                 index = priv->hw_params.bcast_sta_id;
 237         else
 238                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 239                         if (priv->stations[i].used &&
 240                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 241                                                 addr)) {
 242                                 index = i;
 243                                 break;
 244                         }
 245
 246         if (unlikely(index == IWL_INVALID_STATION))
 247                 goto out;
 248
 249         if (priv->stations[index].used) {
 250                 priv->stations[index].used = 0;
 251                 priv->num_stations--;
 252         }
 253
 254         BUG_ON(priv->num_stations < 0);
 255
 256 out:
 257         spin_unlock_irqrestore(&priv->sta_lock, flags);
 258         return 0;
 259 }
 260 #endif
 261
 262 /**
 263  * iwl4965_add_station_flags - Add station to tables in driver and device
 264  */
 265 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
 266                                 int is_ap, u8 flags, void *ht_data)
 267 {
 268         int i;
 269         int index = IWL_INVALID_STATION;
 270         struct iwl_station_entry *station;
 271         unsigned long flags_spin;
 272         DECLARE_MAC_BUF(mac);
 273
 274         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 275         if (is_ap)
 276                 index = IWL_AP_ID;
 277         else if (is_broadcast_ether_addr(addr))
 278                 index = priv->hw_params.bcast_sta_id;
 279         else
 280                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
 281                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 282                                                 addr)) {
 283                                 index = i;
 284                                 break;
 285                         }
 286
 287                         if (!priv->stations[i].used &&
 288                             index == IWL_INVALID_STATION)
 289                                 index = i;
 290                 }
 291
 292
 293         /* These two conditions have the same outcome, but keep them separate
 294           since they have different meanings */
 295         if (unlikely(index == IWL_INVALID_STATION)) {
 296                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 297                 return index;
 298         }
 299
 300         if (priv->stations[index].used &&
 301             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 302                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 303                 return index;
 304         }
 305
 306
 307         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 308         station = &priv->stations[index];
 309         station->used = 1;
 310         priv->num_stations++;
 311
 312         /* Set up the REPLY_ADD_STA command to send to device */
 313         memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
 314         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 315         station->sta.mode = 0;
 316         station->sta.sta.sta_id = index;
 317         station->sta.station_flags = 0;
 318
 319 #ifdef CONFIG_IWL4965_HT
 320         /* BCAST station and IBSS stations do not work in HT mode */
 321         if (index != priv->hw_params.bcast_sta_id &&
 322             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 323                 iwl4965_set_ht_add_station(priv, index,
 324                                  (struct ieee80211_ht_info *) ht_data);
 325 #endif /*CONFIG_IWL4965_HT*/
 326
 327         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 328
 329         /* Add station to device's station table */
 330         iwl_send_add_sta(priv, &station->sta, flags);
 331         return index;
 332
 333 }
 334
 335
 336
 337 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 338
 339 /**
 340  * iwl4965_enqueue_hcmd - enqueue a uCode command
 341  * @priv: device private data point
 342  * @cmd: a point to the ucode command structure
 343  *
 344  * The function returns < 0 values to indicate the operation is
 345  * failed. On success, it turns the index (> 0) of command in the
 346  * command queue.
 347  */
 348 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 349 {
 350         struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 351         struct iwl4965_queue *q = &txq->q;
 352         struct iwl_tfd_frame *tfd;
 353         u32 *control_flags;
 354         struct iwl_cmd *out_cmd;
 355         u32 idx;
 356         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 357         dma_addr_t phys_addr;
 358         int ret;
 359         unsigned long flags;
 360
 361         /* If any of the command structures end up being larger than
 362          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 363          * we will need to increase the size of the TFD entries */
 364         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 365                !(cmd->meta.flags & CMD_SIZE_HUGE));
 366
 367         if (iwl_is_rfkill(priv)) {
 368                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 369                 return -EIO;
 370         }
 371
 372         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 373                 IWL_ERROR("No space for Tx\n");
 374                 return -ENOSPC;
 375         }
 376
 377         spin_lock_irqsave(&priv->hcmd_lock, flags);
 378
 379         tfd = &txq->bd[q->write_ptr];
 380         memset(tfd, 0, sizeof(*tfd));
 381
 382         control_flags = (u32 *) tfd;
 383
 384         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 385         out_cmd = &txq->cmd[idx];
 386
 387         out_cmd->hdr.cmd = cmd->id;
 388         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 389         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 390
 391         /* At this point, the out_cmd now has all of the incoming cmd
 392          * information */
 393
 394         out_cmd->hdr.flags = 0;
 395         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 396                         INDEX_TO_SEQ(q->write_ptr));
 397         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 398                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 399
 400         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 401                         offsetof(struct iwl_cmd, hdr);
 402         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 403
 404         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 405                      "%d bytes at %d[%d]:%d\n",
 406                      get_cmd_string(out_cmd->hdr.cmd),
 407                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 408                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 409
 410         txq->need_update = 1;
 411
 412         /* Set up entry in queue's byte count circular buffer */
 413         priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
 414
 415         /* Increment and update queue's write index */
 416         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 417         ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
 418
 419         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 420         return ret ? ret : idx;
 421 }
 422
 423 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 424 {
 425         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
 426
 427         if (hw_decrypt)
 428                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 429         else
 430                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 431
 432 }
 433
 434 /**
 435  * iwl4965_rxon_add_station - add station into station table.
 436  *
 437  * there is only one AP station with id= IWL_AP_ID
 438  * NOTE: mutex must be held before calling this fnction
 439  */
 440 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
 441                                 const u8 *addr, int is_ap)
 442 {
 443         u8 sta_id;
 444
 445         /* Add station to device's station table */
 446 #ifdef CONFIG_IWL4965_HT
 447         struct ieee80211_conf *conf = &priv->hw->conf;
 448         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 449
 450         if ((is_ap) &&
 451             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 452             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 453                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 454                                                    0, cur_ht_config);
 455         else
 456 #endif /* CONFIG_IWL4965_HT */
 457                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 458                                                    0, NULL);
 459
 460         /* Set up default rate scaling table in device's station table */
 461         iwl4965_add_station(priv, addr, is_ap);
 462
 463         return sta_id;
 464 }
 465
 466 /**
 467  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 468  *
 469  * NOTE:  This is really only useful during development and can eventually
 470  * be #ifdef'd out once the driver is stable and folks aren't actively
 471  * making changes
 472  */
 473 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 474 {
 475         int error = 0;
 476         int counter = 1;
 477
 478         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 479                 error |= le32_to_cpu(rxon->flags &
 480                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 481                                  RXON_FLG_RADAR_DETECT_MSK));
 482                 if (error)
 483                         IWL_WARNING("check 24G fields %d | %d\n",
 484                                     counter++, error);
 485         } else {
 486                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 487                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 488                 if (error)
 489                         IWL_WARNING("check 52 fields %d | %d\n",
 490                                     counter++, error);
 491                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 492                 if (error)
 493                         IWL_WARNING("check 52 CCK %d | %d\n",
 494                                     counter++, error);
 495         }
 496         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 497         if (error)
 498                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 499
 500         /* make sure basic rates 6Mbps and 1Mbps are supported */
 501         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 502                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 503         if (error)
 504                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 505
 506         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 507         if (error)
 508                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 509
 510         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 511                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 512         if (error)
 513                 IWL_WARNING("check CCK and short slot %d | %d\n",
 514                             counter++, error);
 515
 516         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 517                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 518         if (error)
 519                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 520                             counter++, error);
 521
 522         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 523                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 524         if (error)
 525                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 526                             counter++, error);
 527
 528         if (error)
 529                 IWL_WARNING("Tuning to channel %d\n",
 530                             le16_to_cpu(rxon->channel));
 531
 532         if (error) {
 533                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 534                 return -1;
 535         }
 536         return 0;
 537 }
 538
 539 /**
 540  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 541  * @priv: staging_rxon is compared to active_rxon
 542  *
 543  * If the RXON structure is changing enough to require a new tune,
 544  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 545  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 546  */
 547 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 548 {
 549
 550         /* These items are only settable from the full RXON command */
 551         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 552             compare_ether_addr(priv->staging_rxon.bssid_addr,
 553                                priv->active_rxon.bssid_addr) ||
 554             compare_ether_addr(priv->staging_rxon.node_addr,
 555                                priv->active_rxon.node_addr) ||
 556             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 557                                priv->active_rxon.wlap_bssid_addr) ||
 558             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 559             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 560             (priv->staging_rxon.air_propagation !=
 561              priv->active_rxon.air_propagation) ||
 562             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 563              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 564             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 565              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 566             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 567             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 568                 return 1;
 569
 570         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 571          * be updated with the RXON_ASSOC command -- however only some
 572          * flag transitions are allowed using RXON_ASSOC */
 573
 574         /* Check if we are not switching bands */
 575         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 576             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 577                 return 1;
 578
 579         /* Check if we are switching association toggle */
 580         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 581                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 582                 return 1;
 583
 584         return 0;
 585 }
 586
 587 /**
 588  * iwl4965_commit_rxon - commit staging_rxon to hardware
 589  *
 590  * The RXON command in staging_rxon is committed to the hardware and
 591  * the active_rxon structure is updated with the new data.  This
 592  * function correctly transitions out of the RXON_ASSOC_MSK state if
 593  * a HW tune is required based on the RXON structure changes.
 594  */
 595 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 596 {
 597         /* cast away the const for active_rxon in this function */
 598         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 599         DECLARE_MAC_BUF(mac);
 600         int rc = 0;
 601
 602         if (!iwl_is_alive(priv))
 603                 return -1;
 604
 605         /* always get timestamp with Rx frame */
 606         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 607
 608         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 609         if (rc) {
 610                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 611                 return -EINVAL;
 612         }
 613
 614         /* If we don't need to send a full RXON, we can use
 615          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 616          * and other flags for the current radio configuration. */
 617         if (!iwl4965_full_rxon_required(priv)) {
 618                 rc = iwl_send_rxon_assoc(priv);
 619                 if (rc) {
 620                         IWL_ERROR("Error setting RXON_ASSOC "
 621                                   "configuration (%d).\n", rc);
 622                         return rc;
 623                 }
 624
 625                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 626
 627                 return 0;
 628         }
 629
 630         /* station table will be cleared */
 631         priv->assoc_station_added = 0;
 632
 633         /* If we are currently associated and the new config requires
 634          * an RXON_ASSOC and the new config wants the associated mask enabled,
 635          * we must clear the associated from the active configuration
 636          * before we apply the new config */
 637         if (iwl_is_associated(priv) &&
 638             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 639                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 640                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 641
 642                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 643                                       sizeof(struct iwl4965_rxon_cmd),
 644                                       &priv->active_rxon);
 645
 646                 /* If the mask clearing failed then we set
 647                  * active_rxon back to what it was previously */
 648                 if (rc) {
 649                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 650                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 651                                   "configuration (%d).\n", rc);
 652                         return rc;
 653                 }
 654         }
 655
 656         IWL_DEBUG_INFO("Sending RXON\n"
 657                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 658                        "* channel = %d\n"
 659                        "* bssid = %s\n",
 660                        ((priv->staging_rxon.filter_flags &
 661                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 662                        le16_to_cpu(priv->staging_rxon.channel),
 663                        print_mac(mac, priv->staging_rxon.bssid_addr));
 664
 665         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 666         /* Apply the new configuration */
 667         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 668                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
 669         if (rc) {
 670                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 671                 return rc;
 672         }
 673
 674         iwlcore_clear_stations_table(priv);
 675
 676         if (!priv->error_recovering)
 677                 priv->start_calib = 0;
 678
 679         iwl_init_sensitivity(priv);
 680
 681         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 682
 683         /* If we issue a new RXON command which required a tune then we must
 684          * send a new TXPOWER command or we won't be able to Tx any frames */
 685         rc = iwl4965_hw_reg_send_txpower(priv);
 686         if (rc) {
 687                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 688                 return rc;
 689         }
 690
 691         /* Add the broadcast address so we can send broadcast frames */
 692         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
 693             IWL_INVALID_STATION) {
 694                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 695                 return -EIO;
 696         }
 697
 698         /* If we have set the ASSOC_MSK and we are in BSS mode then
 699          * add the IWL_AP_ID to the station rate table */
 700         if (iwl_is_associated(priv) &&
 701             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 702                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 703                     == IWL_INVALID_STATION) {
 704                         IWL_ERROR("Error adding AP address for transmit.\n");
 705                         return -EIO;
 706                 }
 707                 priv->assoc_station_added = 1;
 708                 if (priv->default_wep_key &&
 709                     iwl_send_static_wepkey_cmd(priv, 0))
 710                         IWL_ERROR("Could not send WEP static key.\n");
 711         }
 712
 713         return 0;
 714 }
 715
 716 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 717 {
 718
 719         iwl_set_rxon_chain(priv);
 720         iwl4965_commit_rxon(priv);
 721 }
 722
 723 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 724 {
 725         struct iwl4965_bt_cmd bt_cmd = {
 726                 .flags = 3,
 727                 .lead_time = 0xAA,
 728                 .max_kill = 1,
 729                 .kill_ack_mask = 0,
 730                 .kill_cts_mask = 0,
 731         };
 732
 733         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 734                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 735 }
 736
 737 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 738 {
 739         int ret = 0;
 740         struct iwl_rx_packet *res;
 741         struct iwl_host_cmd cmd = {
 742                 .id = REPLY_SCAN_ABORT_CMD,
 743                 .meta.flags = CMD_WANT_SKB,
 744         };
 745
 746         /* If there isn't a scan actively going on in the hardware
 747          * then we are in between scan bands and not actually
 748          * actively scanning, so don't send the abort command */
 749         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 750                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 751                 return 0;
 752         }
 753
 754         ret = iwl_send_cmd_sync(priv, &cmd);
 755         if (ret) {
 756                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 757                 return ret;
 758         }
 759
 760         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 761         if (res->u.status != CAN_ABORT_STATUS) {
 762                 /* The scan abort will return 1 for success or
 763                  * 2 for "failure".  A failure condition can be
 764                  * due to simply not being in an active scan which
 765                  * can occur if we send the scan abort before we
 766                  * the microcode has notified us that a scan is
 767                  * completed. */
 768                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 769                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 770                 clear_bit(STATUS_SCAN_HW, &priv->status);
 771         }
 772
 773         dev_kfree_skb_any(cmd.meta.u.skb);
 774
 775         return ret;
 776 }
 777
 778 /*
 779  * CARD_STATE_CMD
 780  *
 781  * Use: Sets the device's internal card state to enable, disable, or halt
 782  *
 783  * When in the 'enable' state the card operates as normal.
 784  * When in the 'disable' state, the card enters into a low power mode.
 785  * When in the 'halt' state, the card is shut down and must be fully
 786  * restarted to come back on.
 787  */
 788 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
 789 {
 790         struct iwl_host_cmd cmd = {
 791                 .id = REPLY_CARD_STATE_CMD,
 792                 .len = sizeof(u32),
 793                 .data = &flags,
 794                 .meta.flags = meta_flag,
 795         };
 796
 797         return iwl_send_cmd(priv, &cmd);
 798 }
 799
 800 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
 801 {
 802         struct list_head *element;
 803
 804         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 805                        priv->frames_count);
 806
 807         while (!list_empty(&priv->free_frames)) {
 808                 element = priv->free_frames.next;
 809                 list_del(element);
 810                 kfree(list_entry(element, struct iwl4965_frame, list));
 811                 priv->frames_count--;
 812         }
 813
 814         if (priv->frames_count) {
 815                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 816                             priv->frames_count);
 817                 priv->frames_count = 0;
 818         }
 819 }
 820
 821 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
 822 {
 823         struct iwl4965_frame *frame;
 824         struct list_head *element;
 825         if (list_empty(&priv->free_frames)) {
 826                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 827                 if (!frame) {
 828                         IWL_ERROR("Could not allocate frame!\n");
 829                         return NULL;
 830                 }
 831
 832                 priv->frames_count++;
 833                 return frame;
 834         }
 835
 836         element = priv->free_frames.next;
 837         list_del(element);
 838         return list_entry(element, struct iwl4965_frame, list);
 839 }
 840
 841 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
 842 {
 843         memset(frame, 0, sizeof(*frame));
 844         list_add(&frame->list, &priv->free_frames);
 845 }
 846
 847 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 848                                 struct ieee80211_hdr *hdr,
 849                                 const u8 *dest, int left)
 850 {
 851
 852         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 853             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 854              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 855                 return 0;
 856
 857         if (priv->ibss_beacon->len > left)
 858                 return 0;
 859
 860         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 861
 862         return priv->ibss_beacon->len;
 863 }
 864
 865 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 866 {
 867         int i;
 868         int rate_mask;
 869
 870         /* Set rate mask*/
 871         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 872                 rate_mask = priv->active_rate_basic & 0xF;
 873         else
 874                 rate_mask = priv->active_rate_basic & 0xFF0;
 875
 876         /* Find lowest valid rate */
 877         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 878                                         i = iwl4965_rates[i].next_ieee) {
 879                 if (rate_mask & (1 << i))
 880                         return iwl4965_rates[i].plcp;
 881         }
 882
 883         /* No valid rate was found. Assign the lowest one */
 884         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 885                 return IWL_RATE_1M_PLCP;
 886         else
 887                 return IWL_RATE_6M_PLCP;
 888 }
 889
 890 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 891 {
 892         struct iwl4965_frame *frame;
 893         unsigned int frame_size;
 894         int rc;
 895         u8 rate;
 896
 897         frame = iwl4965_get_free_frame(priv);
 898
 899         if (!frame) {
 900                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 901                           "command.\n");
 902                 return -ENOMEM;
 903         }
 904
 905         rate = iwl4965_rate_get_lowest_plcp(priv);
 906
 907         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 908
 909         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 910                               &frame->u.cmd[0]);
 911
 912         iwl4965_free_frame(priv, frame);
 913
 914         return rc;
 915 }
 916
 917 /******************************************************************************
 918  *
 919  * Misc. internal state and helper functions
 920  *
 921  ******************************************************************************/
 922
 923 /**
 924  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
 925  *
 926  * return : set the bit for each supported rate insert in ie
 927  */
 928 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
 929                                     u16 basic_rate, int *left)
 930 {
 931         u16 ret_rates = 0, bit;
 932         int i;
 933         u8 *cnt = ie;
 934         u8 *rates = ie + 1;
 935
 936         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
 937                 if (bit & supported_rate) {
 938                         ret_rates |= bit;
 939                         rates[*cnt] = iwl4965_rates[i].ieee |
 940                                 ((bit & basic_rate) ? 0x80 : 0x00);
 941                         (*cnt)++;
 942                         (*left)--;
 943                         if ((*left <= 0) ||
 944                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
 945                                 break;
 946                 }
 947         }
 948
 949         return ret_rates;
 950 }
 951
 952 #ifdef CONFIG_IWL4965_HT
 953 static void iwl4965_ht_conf(struct iwl_priv *priv,
 954                             struct ieee80211_bss_conf *bss_conf)
 955 {
 956         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 957         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 958         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 959
 960         IWL_DEBUG_MAC80211("enter: \n");
 961
 962         iwl_conf->is_ht = bss_conf->assoc_ht;
 963
 964         if (!iwl_conf->is_ht)
 965                 return;
 966
 967         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 968
 969         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 970                 iwl_conf->sgf |= 0x1;
 971         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 972                 iwl_conf->sgf |= 0x2;
 973
 974         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 975         iwl_conf->max_amsdu_size =
 976                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 977
 978         iwl_conf->supported_chan_width =
 979                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 980         iwl_conf->extension_chan_offset =
 981                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 982         /* If no above or below channel supplied disable FAT channel */
 983         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
 984             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
 985                 iwl_conf->supported_chan_width = 0;
 986
 987         iwl_conf->tx_mimo_ps_mode =
 988                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 989         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 990
 991         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 992         iwl_conf->tx_chan_width =
 993                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 994         iwl_conf->ht_protection =
 995                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 996         iwl_conf->non_GF_STA_present =
 997                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 998
 999         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
1000         IWL_DEBUG_MAC80211("leave\n");
1001 }
1002
1003 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1004                         u8 *pos, int *left)
1005 {
1006         struct ieee80211_ht_cap *ht_cap;
1007
1008         if (!sband || !sband->ht_info.ht_supported)
1009                 return;
1010
1011         if (*left < sizeof(struct ieee80211_ht_cap))
1012                 return;
1013
1014         *pos++ = sizeof(struct ieee80211_ht_cap);
1015         ht_cap = (struct ieee80211_ht_cap *) pos;
1016
1017         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1018         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1019         ht_cap->ampdu_params_info =
1020                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
1021                 ((sband->ht_info.ampdu_density << 2) &
1022                         IEEE80211_HT_CAP_AMPDU_DENSITY);
1023         *left -= sizeof(struct ieee80211_ht_cap);
1024 }
1025 #else
1026 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
1027                                    struct ieee80211_bss_conf *bss_conf)
1028 {
1029 }
1030 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1031                         u8 *pos, int *left)
1032 {
1033 }
1034 #endif
1035
1036
1037 /**
1038  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1039  */
1040 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1041                                   enum ieee80211_band band,
1042                                   struct ieee80211_mgmt *frame,
1043                                   int left, int is_direct)
1044 {
1045         int len = 0;
1046         u8 *pos = NULL;
1047         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1048         const struct ieee80211_supported_band *sband =
1049                                                 iwl_get_hw_mode(priv, band);
1050
1051         /* Make sure there is enough space for the probe request,
1052          * two mandatory IEs and the data */
1053         left -= 24;
1054         if (left < 0)
1055                 return 0;
1056         len += 24;
1057
1058         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1059         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1060         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1061         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1062         frame->seq_ctrl = 0;
1063
1064         /* fill in our indirect SSID IE */
1065         /* ...next IE... */
1066
1067         left -= 2;
1068         if (left < 0)
1069                 return 0;
1070         len += 2;
1071         pos = &(frame->u.probe_req.variable[0]);
1072         *pos++ = WLAN_EID_SSID;
1073         *pos++ = 0;
1074
1075         /* fill in our direct SSID IE... */
1076         if (is_direct) {
1077                 /* ...next IE... */
1078                 left -= 2 + priv->essid_len;
1079                 if (left < 0)
1080                         return 0;
1081                 /* ... fill it in... */
1082                 *pos++ = WLAN_EID_SSID;
1083                 *pos++ = priv->essid_len;
1084                 memcpy(pos, priv->essid, priv->essid_len);
1085                 pos += priv->essid_len;
1086                 len += 2 + priv->essid_len;
1087         }
1088
1089         /* fill in supported rate */
1090         /* ...next IE... */
1091         left -= 2;
1092         if (left < 0)
1093                 return 0;
1094
1095         /* ... fill it in... */
1096         *pos++ = WLAN_EID_SUPP_RATES;
1097         *pos = 0;
1098
1099         /* exclude 60M rate */
1100         active_rates = priv->rates_mask;
1101         active_rates &= ~IWL_RATE_60M_MASK;
1102
1103         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1104
1105         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1106         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1107                         active_rate_basic, &left);
1108         active_rates &= ~ret_rates;
1109
1110         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1111                                  active_rate_basic, &left);
1112         active_rates &= ~ret_rates;
1113
1114         len += 2 + *pos;
1115         pos += (*pos) + 1;
1116         if (active_rates == 0)
1117                 goto fill_end;
1118
1119         /* fill in supported extended rate */
1120         /* ...next IE... */
1121         left -= 2;
1122         if (left < 0)
1123                 return 0;
1124         /* ... fill it in... */
1125         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1126         *pos = 0;
1127         iwl4965_supported_rate_to_ie(pos, active_rates,
1128                                  active_rate_basic, &left);
1129         if (*pos > 0)
1130                 len += 2 + *pos;
1131
1132  fill_end:
1133         /* fill in HT IE */
1134         left -= 2;
1135         if (left < 0)
1136                 return 0;
1137
1138         *pos++ = WLAN_EID_HT_CAPABILITY;
1139         *pos = 0;
1140
1141         iwl_ht_cap_to_ie(sband, pos, &left);
1142
1143         if (*pos > 0)
1144                 len += 2 + *pos;
1145         return (u16)len;
1146 }
1147
1148 /*
1149  * QoS  support
1150 */
1151 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1152                                        struct iwl4965_qosparam_cmd *qos)
1153 {
1154
1155         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1156                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1157 }
1158
1159 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1160 {
1161         unsigned long flags;
1162
1163         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1164                 return;
1165
1166         if (!priv->qos_data.qos_enable)
1167                 return;
1168
1169         spin_lock_irqsave(&priv->lock, flags);
1170         priv->qos_data.def_qos_parm.qos_flags = 0;
1171
1172         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1173             !priv->qos_data.qos_cap.q_AP.txop_request)
1174                 priv->qos_data.def_qos_parm.qos_flags |=
1175                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1176         if (priv->qos_data.qos_active)
1177                 priv->qos_data.def_qos_parm.qos_flags |=
1178                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1179
1180 #ifdef CONFIG_IWL4965_HT
1181         if (priv->current_ht_config.is_ht)
1182                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1183 #endif /* CONFIG_IWL4965_HT */
1184
1185         spin_unlock_irqrestore(&priv->lock, flags);
1186
1187         if (force || iwl_is_associated(priv)) {
1188                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1189                                 priv->qos_data.qos_active,
1190                                 priv->qos_data.def_qos_parm.qos_flags);
1191
1192                 iwl4965_send_qos_params_command(priv,
1193                                 &(priv->qos_data.def_qos_parm));
1194         }
1195 }
1196
1197 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1198 {
1199         /* Filter incoming packets to determine if they are targeted toward
1200          * this network, discarding packets coming from ourselves */
1201         switch (priv->iw_mode) {
1202         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
1203                 /* packets from our adapter are dropped (echo) */
1204                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1205                         return 0;
1206                 /* {broad,multi}cast packets to our IBSS go through */
1207                 if (is_multicast_ether_addr(header->addr1))
1208                         return !compare_ether_addr(header->addr3, priv->bssid);
1209                 /* packets to our adapter go through */
1210                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1211         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1212                 /* packets from our adapter are dropped (echo) */
1213                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1214                         return 0;
1215                 /* {broad,multi}cast packets to our BSS go through */
1216                 if (is_multicast_ether_addr(header->addr1))
1217                         return !compare_ether_addr(header->addr2, priv->bssid);
1218                 /* packets to our adapter go through */
1219                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1220         default:
1221                 break;
1222         }
1223
1224         return 1;
1225 }
1226
1227 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1228
1229 static const char *iwl4965_get_tx_fail_reason(u32 status)
1230 {
1231         switch (status & TX_STATUS_MSK) {
1232         case TX_STATUS_SUCCESS:
1233                 return "SUCCESS";
1234                 TX_STATUS_ENTRY(SHORT_LIMIT);
1235                 TX_STATUS_ENTRY(LONG_LIMIT);
1236                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1237                 TX_STATUS_ENTRY(MGMNT_ABORT);
1238                 TX_STATUS_ENTRY(NEXT_FRAG);
1239                 TX_STATUS_ENTRY(LIFE_EXPIRE);
1240                 TX_STATUS_ENTRY(DEST_PS);
1241                 TX_STATUS_ENTRY(ABORTED);
1242                 TX_STATUS_ENTRY(BT_RETRY);
1243                 TX_STATUS_ENTRY(STA_INVALID);
1244                 TX_STATUS_ENTRY(FRAG_DROPPED);
1245                 TX_STATUS_ENTRY(TID_DISABLE);
1246                 TX_STATUS_ENTRY(FRAME_FLUSHED);
1247                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1248                 TX_STATUS_ENTRY(TX_LOCKED);
1249                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1250         }
1251
1252         return "UNKNOWN";
1253 }
1254
1255 /**
1256  * iwl4965_scan_cancel - Cancel any currently executing HW scan
1257  *
1258  * NOTE: priv->mutex is not required before calling this function
1259  */
1260 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1261 {
1262         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1263                 clear_bit(STATUS_SCANNING, &priv->status);
1264                 return 0;
1265         }
1266
1267         if (test_bit(STATUS_SCANNING, &priv->status)) {
1268                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1269                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1270                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1271                         queue_work(priv->workqueue, &priv->abort_scan);
1272
1273                 } else
1274                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1275
1276                 return test_bit(STATUS_SCANNING, &priv->status);
1277         }
1278
1279         return 0;
1280 }
1281
1282 /**
1283  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1284  * @ms: amount of time to wait (in milliseconds) for scan to abort
1285  *
1286  * NOTE: priv->mutex must be held before calling this function
1287  */
1288 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1289 {
1290         unsigned long now = jiffies;
1291         int ret;
1292
1293         ret = iwl4965_scan_cancel(priv);
1294         if (ret && ms) {
1295                 mutex_unlock(&priv->mutex);
1296                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1297                                 test_bit(STATUS_SCANNING, &priv->status))
1298                         msleep(1);
1299                 mutex_lock(&priv->mutex);
1300
1301                 return test_bit(STATUS_SCANNING, &priv->status);
1302         }
1303
1304         return ret;
1305 }
1306
1307 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1308 {
1309         /* Reset ieee stats */
1310
1311         /* We don't reset the net_device_stats (ieee->stats) on
1312          * re-association */
1313
1314         priv->last_seq_num = -1;
1315         priv->last_frag_num = -1;
1316         priv->last_packet_time = 0;
1317
1318         iwl4965_scan_cancel(priv);
1319 }
1320
1321 #define MAX_UCODE_BEACON_INTERVAL       4096
1322 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1323
1324 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1325 {
1326         u16 new_val = 0;
1327         u16 beacon_factor = 0;
1328
1329         beacon_factor =
1330             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1331                 / MAX_UCODE_BEACON_INTERVAL;
1332         new_val = beacon_val / beacon_factor;
1333
1334         return cpu_to_le16(new_val);
1335 }
1336
1337 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1338 {
1339         u64 interval_tm_unit;
1340         u64 tsf, result;
1341         unsigned long flags;
1342         struct ieee80211_conf *conf = NULL;
1343         u16 beacon_int = 0;
1344
1345         conf = ieee80211_get_hw_conf(priv->hw);
1346
1347         spin_lock_irqsave(&priv->lock, flags);
1348         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1349         priv->rxon_timing.timestamp.dw[0] =
1350                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1351
1352         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1353
1354         tsf = priv->timestamp;
1355
1356         beacon_int = priv->beacon_int;
1357         spin_unlock_irqrestore(&priv->lock, flags);
1358
1359         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1360                 if (beacon_int == 0) {
1361                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1362                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1363                 } else {
1364                         priv->rxon_timing.beacon_interval =
1365                                 cpu_to_le16(beacon_int);
1366                         priv->rxon_timing.beacon_interval =
1367                             iwl4965_adjust_beacon_interval(
1368                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1369                 }
1370
1371                 priv->rxon_timing.atim_window = 0;
1372         } else {
1373                 priv->rxon_timing.beacon_interval =
1374                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1375                 /* TODO: we need to get atim_window from upper stack
1376                  * for now we set to 0 */
1377                 priv->rxon_timing.atim_window = 0;
1378         }
1379
1380         interval_tm_unit =
1381                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1382         result = do_div(tsf, interval_tm_unit);
1383         priv->rxon_timing.beacon_init_val =
1384             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1385
1386         IWL_DEBUG_ASSOC
1387             ("beacon interval %d beacon timer %d beacon tim %d\n",
1388                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1389                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1390                 le16_to_cpu(priv->rxon_timing.atim_window));
1391 }
1392
1393 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1394 {
1395         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1396                 IWL_ERROR("APs don't scan.\n");
1397                 return 0;
1398         }
1399
1400         if (!iwl_is_ready_rf(priv)) {
1401                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1402                 return -EIO;
1403         }
1404
1405         if (test_bit(STATUS_SCANNING, &priv->status)) {
1406                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1407                 return -EAGAIN;
1408         }
1409
1410         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1411                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1412                                "Queuing.\n");
1413                 return -EAGAIN;
1414         }
1415
1416         IWL_DEBUG_INFO("Starting scan...\n");
1417         priv->scan_bands = 2;
1418         set_bit(STATUS_SCANNING, &priv->status);
1419         priv->scan_start = jiffies;
1420         priv->scan_pass_start = priv->scan_start;
1421
1422         queue_work(priv->workqueue, &priv->request_scan);
1423
1424         return 0;
1425 }
1426
1427
1428 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1429                                           enum ieee80211_band band)
1430 {
1431         if (band == IEEE80211_BAND_5GHZ) {
1432                 priv->staging_rxon.flags &=
1433                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1434                       | RXON_FLG_CCK_MSK);
1435                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1436         } else {
1437                 /* Copied from iwl4965_post_associate() */
1438                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1439                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1440                 else
1441                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1442
1443                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1444                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1445
1446                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1447                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1448                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1449         }
1450 }
1451
1452 /*
1453  * initialize rxon structure with default values from eeprom
1454  */
1455 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1456 {
1457         const struct iwl_channel_info *ch_info;
1458
1459         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1460
1461         switch (priv->iw_mode) {
1462         case IEEE80211_IF_TYPE_AP:
1463                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1464                 break;
1465
1466         case IEEE80211_IF_TYPE_STA:
1467                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1468                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1469                 break;
1470
1471         case IEEE80211_IF_TYPE_IBSS:
1472                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1473                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1474                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1475                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1476                 break;
1477
1478         case IEEE80211_IF_TYPE_MNTR:
1479                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1480                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1481                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1482                 break;
1483         default:
1484                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1485                 break;
1486         }
1487
1488 #if 0
1489         /* TODO:  Figure out when short_preamble would be set and cache from
1490          * that */
1491         if (!hw_to_local(priv->hw)->short_preamble)
1492                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1493         else
1494                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1495 #endif
1496
1497         ch_info = iwl_get_channel_info(priv, priv->band,
1498                                        le16_to_cpu(priv->staging_rxon.channel));
1499
1500         if (!ch_info)
1501                 ch_info = &priv->channel_info[0];
1502
1503         /*
1504          * in some case A channels are all non IBSS
1505          * in this case force B/G channel
1506          */
1507         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1508             !(is_channel_ibss(ch_info)))
1509                 ch_info = &priv->channel_info[0];
1510
1511         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1512         priv->band = ch_info->band;
1513
1514         iwl4965_set_flags_for_phymode(priv, priv->band);
1515
1516         priv->staging_rxon.ofdm_basic_rates =
1517             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1518         priv->staging_rxon.cck_basic_rates =
1519             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1520
1521         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1522                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1523         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1524         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1525         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1526         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1527         iwl_set_rxon_chain(priv);
1528 }
1529
1530 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1531 {
1532         if (mode == IEEE80211_IF_TYPE_IBSS) {
1533                 const struct iwl_channel_info *ch_info;
1534
1535                 ch_info = iwl_get_channel_info(priv,
1536                         priv->band,
1537                         le16_to_cpu(priv->staging_rxon.channel));
1538
1539                 if (!ch_info || !is_channel_ibss(ch_info)) {
1540                         IWL_ERROR("channel %d not IBSS channel\n",
1541                                   le16_to_cpu(priv->staging_rxon.channel));
1542                         return -EINVAL;
1543                 }
1544         }
1545
1546         priv->iw_mode = mode;
1547
1548         iwl4965_connection_init_rx_config(priv);
1549         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1550
1551         iwlcore_clear_stations_table(priv);
1552
1553         /* dont commit rxon if rf-kill is on*/
1554         if (!iwl_is_ready_rf(priv))
1555                 return -EAGAIN;
1556
1557         cancel_delayed_work(&priv->scan_check);
1558         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1559                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1560                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1561                 return -EAGAIN;
1562         }
1563
1564         iwl4965_commit_rxon(priv);
1565
1566         return 0;
1567 }
1568
1569 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1570                                       struct ieee80211_tx_control *ctl,
1571                                       struct iwl_cmd *cmd,
1572                                       struct sk_buff *skb_frag,
1573                                       int sta_id)
1574 {
1575         struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1576         struct iwl_wep_key *wepkey;
1577         int keyidx = 0;
1578
1579         BUG_ON(ctl->hw_key->hw_key_idx > 3);
1580
1581         switch (keyinfo->alg) {
1582         case ALG_CCMP:
1583                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1584                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1585                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1586                         cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1587                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1588                 break;
1589
1590         case ALG_TKIP:
1591                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1592                 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1593                         IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1594                 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1595                 break;
1596
1597         case ALG_WEP:
1598                 wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx];
1599                 cmd->cmd.tx.sec_ctl = 0;
1600                 if (priv->default_wep_key) {
1601                         /* the WEP key was sent as static */
1602                         keyidx = ctl->hw_key->hw_key_idx;
1603                         memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1604                                                         wepkey->key_size);
1605                         if (wepkey->key_size == WEP_KEY_LEN_128)
1606                                 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1607                 } else {
1608                         /* the WEP key was sent as dynamic */
1609                         keyidx = keyinfo->keyidx;
1610                         memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1611                                                         keyinfo->keylen);
1612                         if (keyinfo->keylen == WEP_KEY_LEN_128)
1613                                 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1614                 }
1615
1616                 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1617                         (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
1618
1619                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1620                              "with key %d\n", keyidx);
1621                 break;
1622
1623         default:
1624                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1625                 break;
1626         }
1627 }
1628
1629 /*
1630  * handle build REPLY_TX command notification.
1631  */
1632 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
1633                                   struct iwl_cmd *cmd,
1634                                   struct ieee80211_tx_control *ctrl,
1635                                   struct ieee80211_hdr *hdr,
1636                                   int is_unicast, u8 std_id)
1637 {
1638         __le16 *qc;
1639         u16 fc = le16_to_cpu(hdr->frame_control);
1640         __le32 tx_flags = cmd->cmd.tx.tx_flags;
1641
1642         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1643         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
1644                 tx_flags |= TX_CMD_FLG_ACK_MSK;
1645                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
1646                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1647                 if (ieee80211_is_probe_response(fc) &&
1648                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1649                         tx_flags |= TX_CMD_FLG_TSF_MSK;
1650         } else {
1651                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1652                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1653         }
1654
1655         if (ieee80211_is_back_request(fc))
1656                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
1657
1658
1659         cmd->cmd.tx.sta_id = std_id;
1660         if (ieee80211_get_morefrag(hdr))
1661                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1662
1663         qc = ieee80211_get_qos_ctrl(hdr);
1664         if (qc) {
1665                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
1666                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1667         } else
1668                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1669
1670         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
1671                 tx_flags |= TX_CMD_FLG_RTS_MSK;
1672                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1673         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
1674                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1675                 tx_flags |= TX_CMD_FLG_CTS_MSK;
1676         }
1677
1678         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1679                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1680
1681         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1682         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1683                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
1684                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
1685                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
1686                 else
1687                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
1688         } else {
1689                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
1690         }
1691
1692         cmd->cmd.tx.driver_txop = 0;
1693         cmd->cmd.tx.tx_flags = tx_flags;
1694         cmd->cmd.tx.next_frame_len = 0;
1695 }
1696 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
1697 {
1698         /* 0 - mgmt, 1 - cnt, 2 - data */
1699         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
1700         priv->tx_stats[idx].cnt++;
1701         priv->tx_stats[idx].bytes += len;
1702 }
1703 /**
1704  * iwl4965_get_sta_id - Find station's index within station table
1705  *
1706  * If new IBSS station, create new entry in station table
1707  */
1708 static int iwl4965_get_sta_id(struct iwl_priv *priv,
1709                                 struct ieee80211_hdr *hdr)
1710 {
1711         int sta_id;
1712         u16 fc = le16_to_cpu(hdr->frame_control);
1713         DECLARE_MAC_BUF(mac);
1714
1715         /* If this frame is broadcast or management, use broadcast station id */
1716         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1717             is_multicast_ether_addr(hdr->addr1))
1718                 return priv->hw_params.bcast_sta_id;
1719
1720         switch (priv->iw_mode) {
1721
1722         /* If we are a client station in a BSS network, use the special
1723          * AP station entry (that's the only station we communicate with) */
1724         case IEEE80211_IF_TYPE_STA:
1725                 return IWL_AP_ID;
1726
1727         /* If we are an AP, then find the station, or use BCAST */
1728         case IEEE80211_IF_TYPE_AP:
1729                 sta_id = iwl_find_station(priv, hdr->addr1);
1730                 if (sta_id != IWL_INVALID_STATION)
1731                         return sta_id;
1732                 return priv->hw_params.bcast_sta_id;
1733
1734         /* If this frame is going out to an IBSS network, find the station,
1735          * or create a new station table entry */
1736         case IEEE80211_IF_TYPE_IBSS:
1737                 sta_id = iwl_find_station(priv, hdr->addr1);
1738                 if (sta_id != IWL_INVALID_STATION)
1739                         return sta_id;
1740
1741                 /* Create new station table entry */
1742                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
1743                                                    0, CMD_ASYNC, NULL);
1744
1745                 if (sta_id != IWL_INVALID_STATION)
1746                         return sta_id;
1747
1748                 IWL_DEBUG_DROP("Station %s not in station map. "
1749                                "Defaulting to broadcast...\n",
1750                                print_mac(mac, hdr->addr1));
1751                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1752                 return priv->hw_params.bcast_sta_id;
1753
1754         default:
1755                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
1756                 return priv->hw_params.bcast_sta_id;
1757         }
1758 }
1759
1760 /*
1761  * start REPLY_TX command process
1762  */
1763 static int iwl4965_tx_skb(struct iwl_priv *priv,
1764                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
1765 {
1766         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1767         struct iwl_tfd_frame *tfd;
1768         u32 *control_flags;
1769         int txq_id = ctl->queue;
1770         struct iwl_tx_queue *txq = NULL;
1771         struct iwl4965_queue *q = NULL;
1772         dma_addr_t phys_addr;
1773         dma_addr_t txcmd_phys;
1774         dma_addr_t scratch_phys;
1775         struct iwl_cmd *out_cmd = NULL;
1776         u16 len, idx, len_org;
1777         u8 id, hdr_len, unicast;
1778         u8 sta_id;
1779         u16 seq_number = 0;
1780         u16 fc;
1781         __le16 *qc;
1782         u8 wait_write_ptr = 0;
1783         unsigned long flags;
1784         int rc;
1785
1786         spin_lock_irqsave(&priv->lock, flags);
1787         if (iwl_is_rfkill(priv)) {
1788                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1789                 goto drop_unlock;
1790         }
1791
1792         if (!priv->vif) {
1793                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
1794                 goto drop_unlock;
1795         }
1796
1797         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
1798                 IWL_ERROR("ERROR: No TX rate available.\n");
1799                 goto drop_unlock;
1800         }
1801
1802         unicast = !is_multicast_ether_addr(hdr->addr1);
1803         id = 0;
1804
1805         fc = le16_to_cpu(hdr->frame_control);
1806
1807 #ifdef CONFIG_IWLWIFI_DEBUG
1808         if (ieee80211_is_auth(fc))
1809                 IWL_DEBUG_TX("Sending AUTH frame\n");
1810         else if (ieee80211_is_assoc_request(fc))
1811                 IWL_DEBUG_TX("Sending ASSOC frame\n");
1812         else if (ieee80211_is_reassoc_request(fc))
1813                 IWL_DEBUG_TX("Sending REASSOC frame\n");
1814 #endif
1815
1816         /* drop all data frame if we are not associated */
1817         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
1818            (!iwl_is_associated(priv) ||
1819             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
1820             !priv->assoc_station_added)) {
1821                 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
1822                 goto drop_unlock;
1823         }
1824
1825         spin_unlock_irqrestore(&priv->lock, flags);
1826
1827         hdr_len = ieee80211_get_hdrlen(fc);
1828
1829         /* Find (or create) index into station table for destination station */
1830         sta_id = iwl4965_get_sta_id(priv, hdr);
1831         if (sta_id == IWL_INVALID_STATION) {
1832                 DECLARE_MAC_BUF(mac);
1833
1834                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
1835                                print_mac(mac, hdr->addr1));
1836                 goto drop;
1837         }
1838
1839         IWL_DEBUG_TX("station Id %d\n", sta_id);
1840
1841         qc = ieee80211_get_qos_ctrl(hdr);
1842         if (qc) {
1843                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1844                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
1845                                 IEEE80211_SCTL_SEQ;
1846                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1847                         (hdr->seq_ctrl &
1848                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
1849                 seq_number += 0x10;
1850 #ifdef CONFIG_IWL4965_HT
1851                 /* aggregation is on for this <sta,tid> */
1852                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1853                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
1854                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
1855 #endif /* CONFIG_IWL4965_HT */
1856         }
1857
1858         /* Descriptor for chosen Tx queue */
1859         txq = &priv->txq[txq_id];
1860         q = &txq->q;
1861
1862         spin_lock_irqsave(&priv->lock, flags);
1863
1864         /* Set up first empty TFD within this queue's circular TFD buffer */
1865         tfd = &txq->bd[q->write_ptr];
1866         memset(tfd, 0, sizeof(*tfd));
1867         control_flags = (u32 *) tfd;
1868         idx = get_cmd_index(q, q->write_ptr, 0);
1869
1870         /* Set up driver data for this TFD */
1871         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
1872         txq->txb[q->write_ptr].skb[0] = skb;
1873         memcpy(&(txq->txb[q->write_ptr].status.control),
1874                ctl, sizeof(struct ieee80211_tx_control));
1875
1876         /* Set up first empty entry in queue's array of Tx/cmd buffers */
1877         out_cmd = &txq->cmd[idx];
1878         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1879         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
1880
1881         /*
1882          * Set up the Tx-command (not MAC!) header.
1883          * Store the chosen Tx queue and TFD index within the sequence field;
1884          * after Tx, uCode's Tx response will return this value so driver can
1885          * locate the frame within the tx queue and do post-tx processing.
1886          */
1887         out_cmd->hdr.cmd = REPLY_TX;
1888         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1889                                 INDEX_TO_SEQ(q->write_ptr)));
1890
1891         /* Copy MAC header from skb into command buffer */
1892         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
1893
1894         /*
1895          * Use the first empty entry in this queue's command buffer array
1896          * to contain the Tx command and MAC header concatenated together
1897          * (payload data will be in another buffer).
1898          * Size of this varies, due to varying MAC header length.
1899          * If end is not dword aligned, we'll have 2 extra bytes at the end
1900          * of the MAC header (device reads on dword boundaries).
1901          * We'll tell device about this padding later.
1902          */
1903         len = priv->hw_params.tx_cmd_len +
1904                 sizeof(struct iwl_cmd_header) + hdr_len;
1905
1906         len_org = len;
1907         len = (len + 3) & ~3;
1908
1909         if (len_org != len)
1910                 len_org = 1;
1911         else
1912                 len_org = 0;
1913
1914         /* Physical address of this Tx command's header (not MAC header!),
1915          * within command buffer array. */
1916         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
1917                      offsetof(struct iwl_cmd, hdr);
1918
1919         /* Add buffer containing Tx command and MAC(!) header to TFD's
1920          * first entry */
1921         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
1922
1923         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
1924                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
1925
1926         /* Set up TFD's 2nd entry to point directly to remainder of skb,
1927          * if any (802.11 null frames have no payload). */
1928         len = skb->len - hdr_len;
1929         if (len) {
1930                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1931                                            len, PCI_DMA_TODEVICE);
1932                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
1933         }
1934
1935         /* Tell 4965 about any 2-byte padding after MAC header */
1936         if (len_org)
1937                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
1938
1939         /* Total # bytes to be transmitted */
1940         len = (u16)skb->len;
1941         out_cmd->cmd.tx.len = cpu_to_le16(len);
1942
1943         /* TODO need this for burst mode later on */
1944         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
1945
1946         /* set is_hcca to 0; it probably will never be implemented */
1947         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
1948
1949         iwl_update_tx_stats(priv, fc, len);
1950
1951         scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
1952                 offsetof(struct iwl4965_tx_cmd, scratch);
1953         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
1954         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
1955
1956         if (!ieee80211_get_morefrag(hdr)) {
1957                 txq->need_update = 1;
1958                 if (qc) {
1959                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1960                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
1961                 }
1962         } else {
1963                 wait_write_ptr = 1;
1964                 txq->need_update = 0;
1965         }
1966
1967         iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
1968                            sizeof(out_cmd->cmd.tx));
1969
1970         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
1971                            ieee80211_get_hdrlen(fc));
1972
1973         /* Set up entry for this TFD in Tx byte-count array */
1974         priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
1975
1976         /* Tell device the write index *just past* this latest filled TFD */
1977         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1978         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
1979         spin_unlock_irqrestore(&priv->lock, flags);
1980
1981         if (rc)
1982                 return rc;
1983
1984         if ((iwl4965_queue_space(q) < q->high_mark)
1985             && priv->mac80211_registered) {
1986                 if (wait_write_ptr) {
1987                         spin_lock_irqsave(&priv->lock, flags);
1988                         txq->need_update = 1;
1989                         iwl4965_tx_queue_update_write_ptr(priv, txq);
1990                         spin_unlock_irqrestore(&priv->lock, flags);
1991                 }
1992
1993                 ieee80211_stop_queue(priv->hw, ctl->queue);
1994         }
1995
1996         return 0;
1997
1998 drop_unlock:
1999         spin_unlock_irqrestore(&priv->lock, flags);
2000 drop:
2001         return -1;
2002 }
2003
2004 static void iwl4965_set_rate(struct iwl_priv *priv)
2005 {
2006         const struct ieee80211_supported_band *hw = NULL;
2007         struct ieee80211_rate *rate;
2008         int i;
2009
2010         hw = iwl_get_hw_mode(priv, priv->band);
2011         if (!hw) {
2012                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2013                 return;
2014         }
2015
2016         priv->active_rate = 0;
2017         priv->active_rate_basic = 0;
2018
2019         for (i = 0; i < hw->n_bitrates; i++) {
2020                 rate = &(hw->bitrates[i]);
2021                 if (rate->hw_value < IWL_RATE_COUNT)
2022                         priv->active_rate |= (1 << rate->hw_value);
2023         }
2024
2025         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2026                        priv->active_rate, priv->active_rate_basic);
2027
2028         /*
2029          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2030          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2031          * OFDM
2032          */
2033         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2034                 priv->staging_rxon.cck_basic_rates =
2035                     ((priv->active_rate_basic &
2036                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2037         else
2038                 priv->staging_rxon.cck_basic_rates =
2039                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2040
2041         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2042                 priv->staging_rxon.ofdm_basic_rates =
2043                     ((priv->active_rate_basic &
2044                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2045                       IWL_FIRST_OFDM_RATE) & 0xFF;
2046         else
2047                 priv->staging_rxon.ofdm_basic_rates =
2048                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2049 }
2050
2051 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2052 {
2053         unsigned long flags;
2054
2055         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2056                 return;
2057
2058         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2059                           disable_radio ? "OFF" : "ON");
2060
2061         if (disable_radio) {
2062                 iwl4965_scan_cancel(priv);
2063                 /* FIXME: This is a workaround for AP */
2064                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2065                         spin_lock_irqsave(&priv->lock, flags);
2066                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2067                                     CSR_UCODE_SW_BIT_RFKILL);
2068                         spin_unlock_irqrestore(&priv->lock, flags);
2069                         /* call the host command only if no hw rf-kill set */
2070                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
2071                             iwl_is_ready(priv))
2072                                 iwl4965_send_card_state(priv,
2073                                                         CARD_STATE_CMD_DISABLE,
2074                                                         0);
2075                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2076
2077                         /* make sure mac80211 stop sending Tx frame */
2078                         if (priv->mac80211_registered)
2079                                 ieee80211_stop_queues(priv->hw);
2080                 }
2081                 return;
2082         }
2083
2084         spin_lock_irqsave(&priv->lock, flags);
2085         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2086
2087         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2088         spin_unlock_irqrestore(&priv->lock, flags);
2089
2090         /* wake up ucode */
2091         msleep(10);
2092
2093         spin_lock_irqsave(&priv->lock, flags);
2094         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2095         if (!iwl_grab_nic_access(priv))
2096                 iwl_release_nic_access(priv);
2097         spin_unlock_irqrestore(&priv->lock, flags);
2098
2099         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2100                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2101                                   "disabled by HW switch\n");
2102                 return;
2103         }
2104
2105         queue_work(priv->workqueue, &priv->restart);
2106         return;
2107 }
2108
2109 #define IWL_PACKET_RETRY_TIME HZ
2110
2111 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2112 {
2113         u16 sc = le16_to_cpu(header->seq_ctrl);
2114         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2115         u16 frag = sc & IEEE80211_SCTL_FRAG;
2116         u16 *last_seq, *last_frag;
2117         unsigned long *last_time;
2118
2119         switch (priv->iw_mode) {
2120         case IEEE80211_IF_TYPE_IBSS:{
2121                 struct list_head *p;
2122                 struct iwl4965_ibss_seq *entry = NULL;
2123                 u8 *mac = header->addr2;
2124                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2125
2126                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2127                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2128                         if (!compare_ether_addr(entry->mac, mac))
2129                                 break;
2130                 }
2131                 if (p == &priv->ibss_mac_hash[index]) {
2132                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2133                         if (!entry) {
2134                                 IWL_ERROR("Cannot malloc new mac entry\n");
2135                                 return 0;
2136                         }
2137                         memcpy(entry->mac, mac, ETH_ALEN);
2138                         entry->seq_num = seq;
2139                         entry->frag_num = frag;
2140                         entry->packet_time = jiffies;
2141                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2142                         return 0;
2143                 }
2144                 last_seq = &entry->seq_num;
2145                 last_frag = &entry->frag_num;
2146                 last_time = &entry->packet_time;
2147                 break;
2148         }
2149         case IEEE80211_IF_TYPE_STA:
2150                 last_seq = &priv->last_seq_num;
2151                 last_frag = &priv->last_frag_num;
2152                 last_time = &priv->last_packet_time;
2153                 break;
2154         default:
2155                 return 0;
2156         }
2157         if ((*last_seq == seq) &&
2158             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2159                 if (*last_frag == frag)
2160                         goto drop;
2161                 if (*last_frag + 1 != frag)
2162                         /* out-of-order fragment */
2163                         goto drop;
2164         } else
2165                 *last_seq = seq;
2166
2167         *last_frag = frag;
2168         *last_time = jiffies;
2169         return 0;
2170
2171  drop:
2172         return 1;
2173 }
2174
2175 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2176
2177 #include "iwl-spectrum.h"
2178
2179 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2180 #define BEACON_TIME_MASK_HIGH   0xFF000000
2181 #define TIME_UNIT               1024
2182
2183 /*
2184  * extended beacon time format
2185  * time in usec will be changed into a 32-bit value in 8:24 format
2186  * the high 1 byte is the beacon counts
2187  * the lower 3 bytes is the time in usec within one beacon interval
2188  */
2189
2190 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2191 {
2192         u32 quot;
2193         u32 rem;
2194         u32 interval = beacon_interval * 1024;
2195
2196         if (!interval || !usec)
2197                 return 0;
2198
2199         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2200         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2201
2202         return (quot << 24) + rem;
2203 }
2204
2205 /* base is usually what we get from ucode with each received frame,
2206  * the same as HW timer counter counting down
2207  */
2208
2209 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2210 {
2211         u32 base_low = base & BEACON_TIME_MASK_LOW;
2212         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2213         u32 interval = beacon_interval * TIME_UNIT;
2214         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2215             (addon & BEACON_TIME_MASK_HIGH);
2216
2217         if (base_low > addon_low)
2218                 res += base_low - addon_low;
2219         else if (base_low < addon_low) {
2220                 res += interval + base_low - addon_low;
2221                 res += (1 << 24);
2222         } else
2223                 res += (1 << 24);
2224
2225         return cpu_to_le32(res);
2226 }
2227
2228 static int iwl4965_get_measurement(struct iwl_priv *priv,
2229                                struct ieee80211_measurement_params *params,
2230                                u8 type)
2231 {
2232         struct iwl4965_spectrum_cmd spectrum;
2233         struct iwl_rx_packet *res;
2234         struct iwl_host_cmd cmd = {
2235                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2236                 .data = (void *)&spectrum,
2237                 .meta.flags = CMD_WANT_SKB,
2238         };
2239         u32 add_time = le64_to_cpu(params->start_time);
2240         int rc;
2241         int spectrum_resp_status;
2242         int duration = le16_to_cpu(params->duration);
2243
2244         if (iwl_is_associated(priv))
2245                 add_time =
2246                     iwl4965_usecs_to_beacons(
2247                         le64_to_cpu(params->start_time) - priv->last_tsf,
2248                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2249
2250         memset(&spectrum, 0, sizeof(spectrum));
2251
2252         spectrum.channel_count = cpu_to_le16(1);
2253         spectrum.flags =
2254             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2255         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2256         cmd.len = sizeof(spectrum);
2257         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2258
2259         if (iwl_is_associated(priv))
2260                 spectrum.start_time =
2261                     iwl4965_add_beacon_time(priv->last_beacon_time,
2262                                 add_time,
2263                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2264         else
2265                 spectrum.start_time = 0;
2266
2267         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2268         spectrum.channels[0].channel = params->channel;
2269         spectrum.channels[0].type = type;
2270         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2271                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2272                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2273
2274         rc = iwl_send_cmd_sync(priv, &cmd);
2275         if (rc)
2276                 return rc;
2277
2278         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2279         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2280                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2281                 rc = -EIO;
2282         }
2283
2284         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2285         switch (spectrum_resp_status) {
2286         case 0:         /* Command will be handled */
2287                 if (res->u.spectrum.id != 0xff) {
2288                         IWL_DEBUG_INFO
2289                             ("Replaced existing measurement: %d\n",
2290                              res->u.spectrum.id);
2291                         priv->measurement_status &= ~MEASUREMENT_READY;
2292                 }
2293                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2294                 rc = 0;
2295                 break;
2296
2297         case 1:         /* Command will not be handled */
2298                 rc = -EAGAIN;
2299                 break;
2300         }
2301
2302         dev_kfree_skb_any(cmd.meta.u.skb);
2303
2304         return rc;
2305 }
2306 #endif
2307
2308 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2309                                  struct iwl4965_tx_info *tx_sta)
2310 {
2311
2312         tx_sta->status.ack_signal = 0;
2313         tx_sta->status.excessive_retries = 0;
2314
2315         if (in_interrupt())
2316                 ieee80211_tx_status_irqsafe(priv->hw,
2317                                             tx_sta->skb[0], &(tx_sta->status));
2318         else
2319                 ieee80211_tx_status(priv->hw,
2320                                     tx_sta->skb[0], &(tx_sta->status));
2321
2322         tx_sta->skb[0] = NULL;
2323 }
2324
2325 /**
2326  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2327  *
2328  * When FW advances 'R' index, all entries between old and new 'R' index
2329  * need to be reclaimed. As result, some free space forms.  If there is
2330  * enough free space (> low mark), wake the stack that feeds us.
2331  */
2332 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2333 {
2334         struct iwl_tx_queue *txq = &priv->txq[txq_id];
2335         struct iwl4965_queue *q = &txq->q;
2336         int nfreed = 0;
2337
2338         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2339                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2340                           "is out of range [0-%d] %d %d.\n", txq_id,
2341                           index, q->n_bd, q->write_ptr, q->read_ptr);
2342                 return 0;
2343         }
2344
2345         for (index = iwl_queue_inc_wrap(index, q->n_bd);
2346                 q->read_ptr != index;
2347                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2348                 if (txq_id != IWL_CMD_QUEUE_NUM) {
2349                         iwl4965_txstatus_to_ieee(priv,
2350                                         &(txq->txb[txq->q.read_ptr]));
2351                         iwl_hw_txq_free_tfd(priv, txq);
2352                 } else if (nfreed > 1) {
2353                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2354                                         q->write_ptr, q->read_ptr);
2355                         queue_work(priv->workqueue, &priv->restart);
2356                 }
2357                 nfreed++;
2358         }
2359
2360         return nfreed;
2361 }
2362
2363 static int iwl4965_is_tx_success(u32 status)
2364 {
2365         status &= TX_STATUS_MSK;
2366         return (status == TX_STATUS_SUCCESS)
2367             || (status == TX_STATUS_DIRECT_DONE);
2368 }
2369
2370 /******************************************************************************
2371  *
2372  * Generic RX handler implementations
2373  *
2374  ******************************************************************************/
2375 #ifdef CONFIG_IWL4965_HT
2376
2377 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2378                                     struct ieee80211_hdr *hdr)
2379 {
2380         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2381                 return IWL_AP_ID;
2382         else {
2383                 u8 *da = ieee80211_get_DA(hdr);
2384                 return iwl_find_station(priv, da);
2385         }
2386 }
2387
2388 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2389         struct iwl_priv *priv, int txq_id, int idx)
2390 {
2391         if (priv->txq[txq_id].txb[idx].skb[0])
2392                 return (struct ieee80211_hdr *)priv->txq[txq_id].
2393                                 txb[idx].skb[0]->data;
2394         return NULL;
2395 }
2396
2397 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2398 {
2399         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2400                                 tx_resp->frame_count);
2401         return le32_to_cpu(*scd_ssn) & MAX_SN;
2402
2403 }
2404
2405 /**
2406  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2407  */
2408 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2409                                       struct iwl_ht_agg *agg,
2410                                       struct iwl4965_tx_resp_agg *tx_resp,
2411                                       u16 start_idx)
2412 {
2413         u16 status;
2414         struct agg_tx_status *frame_status = &tx_resp->status;
2415         struct ieee80211_tx_status *tx_status = NULL;
2416         struct ieee80211_hdr *hdr = NULL;
2417         int i, sh;
2418         int txq_id, idx;
2419         u16 seq;
2420
2421         if (agg->wait_for_ba)
2422                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2423
2424         agg->frame_count = tx_resp->frame_count;
2425         agg->start_idx = start_idx;
2426         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2427         agg->bitmap = 0;
2428
2429         /* # frames attempted by Tx command */
2430         if (agg->frame_count == 1) {
2431                 /* Only one frame was attempted; no block-ack will arrive */
2432                 status = le16_to_cpu(frame_status[0].status);
2433                 seq  = le16_to_cpu(frame_status[0].sequence);
2434                 idx = SEQ_TO_INDEX(seq);
2435                 txq_id = SEQ_TO_QUEUE(seq);
2436
2437                 /* FIXME: code repetition */
2438                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2439                                    agg->frame_count, agg->start_idx, idx);
2440
2441                 tx_status = &(priv->txq[txq_id].txb[idx].status);
2442                 tx_status->retry_count = tx_resp->failure_frame;
2443                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2444                 tx_status->flags = iwl4965_is_tx_success(status)?
2445                         IEEE80211_TX_STATUS_ACK : 0;
2446                 iwl4965_hwrate_to_tx_control(priv,
2447                                              le32_to_cpu(tx_resp->rate_n_flags),
2448                                              &tx_status->control);
2449                 /* FIXME: code repetition end */
2450
2451                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2452                                     status & 0xff, tx_resp->failure_frame);
2453                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2454                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2455
2456                 agg->wait_for_ba = 0;
2457         } else {
2458                 /* Two or more frames were attempted; expect block-ack */
2459                 u64 bitmap = 0;
2460                 int start = agg->start_idx;
2461
2462                 /* Construct bit-map of pending frames within Tx window */
2463                 for (i = 0; i < agg->frame_count; i++) {
2464                         u16 sc;
2465                         status = le16_to_cpu(frame_status[i].status);
2466                         seq  = le16_to_cpu(frame_status[i].sequence);
2467                         idx = SEQ_TO_INDEX(seq);
2468                         txq_id = SEQ_TO_QUEUE(seq);
2469
2470                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2471                                       AGG_TX_STATE_ABORT_MSK))
2472                                 continue;
2473
2474                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2475                                            agg->frame_count, txq_id, idx);
2476
2477                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2478
2479                         sc = le16_to_cpu(hdr->seq_ctrl);
2480                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2481                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
2482                                           " idx=%d, seq_idx=%d, seq=%d\n",
2483                                           idx, SEQ_TO_SN(sc),
2484                                           hdr->seq_ctrl);
2485                                 return -1;
2486                         }
2487
2488                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2489                                            i, idx, SEQ_TO_SN(sc));
2490
2491                         sh = idx - start;
2492                         if (sh > 64) {
2493                                 sh = (start - idx) + 0xff;
2494                                 bitmap = bitmap << sh;
2495                                 sh = 0;
2496                                 start = idx;
2497                         } else if (sh < -64)
2498                                 sh  = 0xff - (start - idx);
2499                         else if (sh < 0) {
2500                                 sh = start - idx;
2501                                 start = idx;
2502                                 bitmap = bitmap << sh;
2503                                 sh = 0;
2504                         }
2505                         bitmap |= (1 << sh);
2506                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2507                                            start, (u32)(bitmap & 0xFFFFFFFF));
2508                 }
2509
2510                 agg->bitmap = bitmap;
2511                 agg->start_idx = start;
2512                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2513                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2514                                    agg->frame_count, agg->start_idx,
2515                                    (unsigned long long)agg->bitmap);
2516
2517                 if (bitmap)
2518                         agg->wait_for_ba = 1;
2519         }
2520         return 0;
2521 }
2522 #endif
2523
2524 /**
2525  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2526  */
2527 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2528                                 struct iwl_rx_mem_buffer *rxb)
2529 {
2530         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2531         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2532         int txq_id = SEQ_TO_QUEUE(sequence);
2533         int index = SEQ_TO_INDEX(sequence);
2534         struct iwl_tx_queue *txq = &priv->txq[txq_id];
2535         struct ieee80211_tx_status *tx_status;
2536         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2537         u32  status = le32_to_cpu(tx_resp->status);
2538 #ifdef CONFIG_IWL4965_HT
2539         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2540         struct ieee80211_hdr *hdr;
2541         __le16 *qc;
2542 #endif
2543
2544         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2545                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2546                           "is out of range [0-%d] %d %d\n", txq_id,
2547                           index, txq->q.n_bd, txq->q.write_ptr,
2548                           txq->q.read_ptr);
2549                 return;
2550         }
2551
2552 #ifdef CONFIG_IWL4965_HT
2553         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2554         qc = ieee80211_get_qos_ctrl(hdr);
2555
2556         if (qc)
2557                 tid = le16_to_cpu(*qc) & 0xf;
2558
2559         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2560         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2561                 IWL_ERROR("Station not known\n");
2562                 return;
2563         }
2564
2565         if (txq->sched_retry) {
2566                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2567                 struct iwl_ht_agg *agg = NULL;
2568
2569                 if (!qc)
2570                         return;
2571
2572                 agg = &priv->stations[sta_id].tid[tid].agg;
2573
2574                 iwl4965_tx_status_reply_tx(priv, agg,
2575                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2576
2577                 if ((tx_resp->frame_count == 1) &&
2578                     !iwl4965_is_tx_success(status)) {
2579                         /* TODO: send BAR */
2580                 }
2581
2582                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2583                         int freed, ampdu_q;
2584                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2585                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2586                                            "%d index %d\n", scd_ssn , index);
2587                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2588                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2589
2590                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2591                             txq_id >= 0 && priv->mac80211_registered &&
2592                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
2593                                 /* calculate mac80211 ampdu sw queue to wake */
2594                                 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
2595                                           priv->hw->queues;
2596                                 if (agg->state == IWL_AGG_OFF)
2597                                         ieee80211_wake_queue(priv->hw, txq_id);
2598                                 else
2599                                         ieee80211_wake_queue(priv->hw, ampdu_q);
2600                         }
2601                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2602                 }
2603         } else {
2604 #endif /* CONFIG_IWL4965_HT */
2605         tx_status = &(txq->txb[txq->q.read_ptr].status);
2606
2607         tx_status->retry_count = tx_resp->failure_frame;
2608         tx_status->flags =
2609             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
2610         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
2611                                      &tx_status->control);
2612
2613         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
2614                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
2615                      status, le32_to_cpu(tx_resp->rate_n_flags),
2616                      tx_resp->failure_frame);
2617
2618         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
2619 #ifdef CONFIG_IWL4965_HT
2620         if (index != -1) {
2621                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2622                 if (tid != MAX_TID_COUNT)
2623                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2624                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2625                         (txq_id >= 0) && priv->mac80211_registered)
2626                         ieee80211_wake_queue(priv->hw, txq_id);
2627                 if (tid != MAX_TID_COUNT)
2628                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2629         }
2630         }
2631 #endif /* CONFIG_IWL4965_HT */
2632
2633         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2634                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
2635 }
2636
2637
2638 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
2639                                    struct iwl_rx_mem_buffer *rxb)
2640 {
2641         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2642         struct iwl4965_alive_resp *palive;
2643         struct delayed_work *pwork;
2644
2645         palive = &pkt->u.alive_frame;
2646
2647         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2648                        "0x%01X 0x%01X\n",
2649                        palive->is_valid, palive->ver_type,
2650                        palive->ver_subtype);
2651
2652         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2653                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2654                 memcpy(&priv->card_alive_init,
2655                        &pkt->u.alive_frame,
2656                        sizeof(struct iwl4965_init_alive_resp));
2657                 pwork = &priv->init_alive_start;
2658         } else {
2659                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2660                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2661                        sizeof(struct iwl4965_alive_resp));
2662                 pwork = &priv->alive_start;
2663         }
2664
2665         /* We delay the ALIVE response by 5ms to
2666          * give the HW RF Kill time to activate... */
2667         if (palive->is_valid == UCODE_VALID_OK)
2668                 queue_delayed_work(priv->workqueue, pwork,
2669                                    msecs_to_jiffies(5));
2670         else
2671                 IWL_WARNING("uCode did not respond OK.\n");
2672 }
2673
2674 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
2675                                      struct iwl_rx_mem_buffer *rxb)
2676 {
2677         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2678
2679         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2680         return;
2681 }
2682
2683 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
2684                                    struct iwl_rx_mem_buffer *rxb)
2685 {
2686         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2687
2688         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2689                 "seq 0x%04X ser 0x%08X\n",
2690                 le32_to_cpu(pkt->u.err_resp.error_type),
2691                 get_cmd_string(pkt->u.err_resp.cmd_id),
2692                 pkt->u.err_resp.cmd_id,
2693                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2694                 le32_to_cpu(pkt->u.err_resp.error_info));
2695 }
2696
2697 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2698
2699 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2700 {
2701         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2702         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
2703         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
2704         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2705                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2706         rxon->channel = csa->channel;
2707         priv->staging_rxon.channel = csa->channel;
2708 }
2709
2710 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2711                                           struct iwl_rx_mem_buffer *rxb)
2712 {
2713 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2714         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2715         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2716
2717         if (!report->state) {
2718                 IWL_DEBUG(IWL_DL_11H,
2719                         "Spectrum Measure Notification: Start\n");
2720                 return;
2721         }
2722
2723         memcpy(&priv->measure_report, report, sizeof(*report));
2724         priv->measurement_status |= MEASUREMENT_READY;
2725 #endif
2726 }
2727
2728 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2729                                       struct iwl_rx_mem_buffer *rxb)
2730 {
2731 #ifdef CONFIG_IWLWIFI_DEBUG
2732         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2733         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2734         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2735                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2736 #endif
2737 }
2738
2739 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2740                                              struct iwl_rx_mem_buffer *rxb)
2741 {
2742         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2743         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2744                         "notification for %s:\n",
2745                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2746         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2747 }
2748
2749 static void iwl4965_bg_beacon_update(struct work_struct *work)
2750 {
2751         struct iwl_priv *priv =
2752                 container_of(work, struct iwl_priv, beacon_update);
2753         struct sk_buff *beacon;
2754
2755         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2756         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
2757
2758         if (!beacon) {
2759                 IWL_ERROR("update beacon failed\n");
2760                 return;
2761         }
2762
2763         mutex_lock(&priv->mutex);
2764         /* new beacon skb is allocated every time; dispose previous.*/
2765         if (priv->ibss_beacon)
2766                 dev_kfree_skb(priv->ibss_beacon);
2767
2768         priv->ibss_beacon = beacon;
2769         mutex_unlock(&priv->mutex);
2770
2771         iwl4965_send_beacon_cmd(priv);
2772 }
2773
2774 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2775                                 struct iwl_rx_mem_buffer *rxb)
2776 {
2777 #ifdef CONFIG_IWLWIFI_DEBUG
2778         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2779         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2780         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2781
2782         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2783                 "tsf %d %d rate %d\n",
2784                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2785                 beacon->beacon_notify_hdr.failure_frame,
2786                 le32_to_cpu(beacon->ibss_mgr_status),
2787                 le32_to_cpu(beacon->high_tsf),
2788                 le32_to_cpu(beacon->low_tsf), rate);
2789 #endif
2790
2791         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2792             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2793                 queue_work(priv->workqueue, &priv->beacon_update);
2794 }
2795
2796 /* Service response to REPLY_SCAN_CMD (0x80) */
2797 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2798                               struct iwl_rx_mem_buffer *rxb)
2799 {
2800 #ifdef CONFIG_IWLWIFI_DEBUG
2801         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2802         struct iwl4965_scanreq_notification *notif =
2803             (struct iwl4965_scanreq_notification *)pkt->u.raw;
2804
2805         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2806 #endif
2807 }
2808
2809 /* Service SCAN_START_NOTIFICATION (0x82) */
2810 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2811                                     struct iwl_rx_mem_buffer *rxb)
2812 {
2813         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2814         struct iwl4965_scanstart_notification *notif =
2815             (struct iwl4965_scanstart_notification *)pkt->u.raw;
2816         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2817         IWL_DEBUG_SCAN("Scan start: "
2818                        "%d [802.11%s] "
2819                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2820                        notif->channel,
2821                        notif->band ? "bg" : "a",
2822                        notif->tsf_high,
2823                        notif->tsf_low, notif->status, notif->beacon_timer);
2824 }
2825
2826 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2827 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2828                                       struct iwl_rx_mem_buffer *rxb)
2829 {
2830         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2831         struct iwl4965_scanresults_notification *notif =
2832             (struct iwl4965_scanresults_notification *)pkt->u.raw;
2833
2834         IWL_DEBUG_SCAN("Scan ch.res: "
2835                        "%d [802.11%s] "
2836                        "(TSF: 0x%08X:%08X) - %d "
2837                        "elapsed=%lu usec (%dms since last)\n",
2838                        notif->channel,
2839                        notif->band ? "bg" : "a",
2840                        le32_to_cpu(notif->tsf_high),
2841                        le32_to_cpu(notif->tsf_low),
2842                        le32_to_cpu(notif->statistics[0]),
2843                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2844                        jiffies_to_msecs(elapsed_jiffies
2845                                         (priv->last_scan_jiffies, jiffies)));
2846
2847         priv->last_scan_jiffies = jiffies;
2848         priv->next_scan_jiffies = 0;
2849 }
2850
2851 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2852 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2853                                        struct iwl_rx_mem_buffer *rxb)
2854 {
2855         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2856         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2857
2858         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2859                        scan_notif->scanned_channels,
2860                        scan_notif->tsf_low,
2861                        scan_notif->tsf_high, scan_notif->status);
2862
2863         /* The HW is no longer scanning */
2864         clear_bit(STATUS_SCAN_HW, &priv->status);
2865
2866         /* The scan completion notification came in, so kill that timer... */
2867         cancel_delayed_work(&priv->scan_check);
2868
2869         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2870                        (priv->scan_bands == 2) ? "2.4" : "5.2",
2871                        jiffies_to_msecs(elapsed_jiffies
2872                                         (priv->scan_pass_start, jiffies)));
2873
2874         /* Remove this scanned band from the list
2875          * of pending bands to scan */
2876         priv->scan_bands--;
2877
2878         /* If a request to abort was given, or the scan did not succeed
2879          * then we reset the scan state machine and terminate,
2880          * re-queuing another scan if one has been requested */
2881         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2882                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2883                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2884         } else {
2885                 /* If there are more bands on this scan pass reschedule */
2886                 if (priv->scan_bands > 0)
2887                         goto reschedule;
2888         }
2889
2890         priv->last_scan_jiffies = jiffies;
2891         priv->next_scan_jiffies = 0;
2892         IWL_DEBUG_INFO("Setting scan to off\n");
2893
2894         clear_bit(STATUS_SCANNING, &priv->status);
2895
2896         IWL_DEBUG_INFO("Scan took %dms\n",
2897                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2898
2899         queue_work(priv->workqueue, &priv->scan_completed);
2900
2901         return;
2902
2903 reschedule:
2904         priv->scan_pass_start = jiffies;
2905         queue_work(priv->workqueue, &priv->request_scan);
2906 }
2907
2908 /* Handle notification from uCode that card's power state is changing
2909  * due to software, hardware, or critical temperature RFKILL */
2910 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2911                                     struct iwl_rx_mem_buffer *rxb)
2912 {
2913         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2914         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2915         unsigned long status = priv->status;
2916
2917         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2918                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2919                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2920
2921         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2922                      RF_CARD_DISABLED)) {
2923
2924                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2925                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2926
2927                 if (!iwl_grab_nic_access(priv)) {
2928                         iwl_write_direct32(
2929                                 priv, HBUS_TARG_MBX_C,
2930                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2931
2932                         iwl_release_nic_access(priv);
2933                 }
2934
2935                 if (!(flags & RXON_CARD_DISABLED)) {
2936                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2937                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2938                         if (!iwl_grab_nic_access(priv)) {
2939                                 iwl_write_direct32(
2940                                         priv, HBUS_TARG_MBX_C,
2941                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2942
2943                                 iwl_release_nic_access(priv);
2944                         }
2945                 }
2946
2947                 if (flags & RF_CARD_DISABLED) {
2948                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2949                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2950                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2951                         if (!iwl_grab_nic_access(priv))
2952                                 iwl_release_nic_access(priv);
2953                 }
2954         }
2955
2956         if (flags & HW_CARD_DISABLED)
2957                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2958         else
2959                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2960
2961
2962         if (flags & SW_CARD_DISABLED)
2963                 set_bit(STATUS_RF_KILL_SW, &priv->status);
2964         else
2965                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2966
2967         if (!(flags & RXON_CARD_DISABLED))
2968                 iwl4965_scan_cancel(priv);
2969
2970         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2971              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2972             (test_bit(STATUS_RF_KILL_SW, &status) !=
2973              test_bit(STATUS_RF_KILL_SW, &priv->status)))
2974                 queue_work(priv->workqueue, &priv->rf_kill);
2975         else
2976                 wake_up_interruptible(&priv->wait_command_queue);
2977 }
2978
2979 /**
2980  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2981  *
2982  * Setup the RX handlers for each of the reply types sent from the uCode
2983  * to the host.
2984  *
2985  * This function chains into the hardware specific files for them to setup
2986  * any hardware specific handlers as well.
2987  */
2988 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2989 {
2990         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
2991         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2992         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2993         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2994         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2995             iwl4965_rx_spectrum_measure_notif;
2996         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2997         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2998             iwl4965_rx_pm_debug_statistics_notif;
2999         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3000
3001         /*
3002          * The same handler is used for both the REPLY to a discrete
3003          * statistics request from the host as well as for the periodic
3004          * statistics notifications (after received beacons) from the uCode.
3005          */
3006         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3007         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3008
3009         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3010         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3011         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3012             iwl4965_rx_scan_results_notif;
3013         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3014             iwl4965_rx_scan_complete_notif;
3015         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3016         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3017
3018         /* Set up hardware specific Rx handlers */
3019         priv->cfg->ops->lib->rx_handler_setup(priv);
3020 }
3021
3022 /**
3023  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3024  * @rxb: Rx buffer to reclaim
3025  *
3026  * If an Rx buffer has an async callback associated with it the callback
3027  * will be executed.  The attached skb (if present) will only be freed
3028  * if the callback returns 1
3029  */
3030 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3031                                     struct iwl_rx_mem_buffer *rxb)
3032 {
3033         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3034         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3035         int txq_id = SEQ_TO_QUEUE(sequence);
3036         int index = SEQ_TO_INDEX(sequence);
3037         int huge = sequence & SEQ_HUGE_FRAME;
3038         int cmd_index;
3039         struct iwl_cmd *cmd;
3040
3041         /* If a Tx command is being handled and it isn't in the actual
3042          * command queue then there a command routing bug has been introduced
3043          * in the queue management code. */
3044         if (txq_id != IWL_CMD_QUEUE_NUM)
3045                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3046                           txq_id, pkt->hdr.cmd);
3047         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3048
3049         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3050         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3051
3052         /* Input error checking is done when commands are added to queue. */
3053         if (cmd->meta.flags & CMD_WANT_SKB) {
3054                 cmd->meta.source->u.skb = rxb->skb;
3055                 rxb->skb = NULL;
3056         } else if (cmd->meta.u.callback &&
3057                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3058                 rxb->skb = NULL;
3059
3060         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3061
3062         if (!(cmd->meta.flags & CMD_ASYNC)) {
3063                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3064                 wake_up_interruptible(&priv->wait_command_queue);
3065         }
3066 }
3067
3068 /*
3069  * this should be called while priv->lock is locked
3070 */
3071 static void __iwl_rx_replenish(struct iwl_priv *priv)
3072 {
3073         iwl_rx_allocate(priv);
3074         iwl_rx_queue_restock(priv);
3075 }
3076
3077
3078 /**
3079  * iwl_rx_handle - Main entry function for receiving responses from uCode
3080  *
3081  * Uses the priv->rx_handlers callback function array to invoke
3082  * the appropriate handlers, including command responses,
3083  * frame-received notifications, and other notifications.
3084  */
3085 void iwl_rx_handle(struct iwl_priv *priv)
3086 {
3087         struct iwl_rx_mem_buffer *rxb;
3088         struct iwl_rx_packet *pkt;
3089         struct iwl_rx_queue *rxq = &priv->rxq;
3090         u32 r, i;
3091         int reclaim;
3092         unsigned long flags;
3093         u8 fill_rx = 0;
3094         u32 count = 8;
3095
3096         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3097          * buffer that the driver may process (last buffer filled by ucode). */
3098         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
3099         i = rxq->read;
3100
3101         /* Rx interrupt, but nothing sent from uCode */
3102         if (i == r)
3103                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
3104
3105         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3106                 fill_rx = 1;
3107
3108         while (i != r) {
3109                 rxb = rxq->queue[i];
3110
3111                 /* If an RXB doesn't have a Rx queue slot associated with it,
3112                  * then a bug has been introduced in the queue refilling
3113                  * routines -- catch it here */
3114                 BUG_ON(rxb == NULL);
3115
3116                 rxq->queue[i] = NULL;
3117
3118                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3119                                             priv->hw_params.rx_buf_size,
3120                                             PCI_DMA_FROMDEVICE);
3121                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3122
3123                 /* Reclaim a command buffer only if this packet is a response
3124                  *   to a (driver-originated) command.
3125                  * If the packet (e.g. Rx frame) originated from uCode,
3126                  *   there is no command buffer to reclaim.
3127                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3128                  *   but apparently a few don't get set; catch them here. */
3129                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3130                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3131                         (pkt->hdr.cmd != REPLY_RX) &&
3132                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3133                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3134                         (pkt->hdr.cmd != REPLY_TX);
3135
3136                 /* Based on type of command response or notification,
3137                  *   handle those that need handling via function in
3138                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
3139                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3140                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
3141                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3142                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3143                 } else {
3144                         /* No handling needed */
3145                         IWL_DEBUG(IWL_DL_RX,
3146                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3147                                 r, i, get_cmd_string(pkt->hdr.cmd),
3148                                 pkt->hdr.cmd);
3149                 }
3150
3151                 if (reclaim) {
3152                         /* Invoke any callbacks, transfer the skb to caller, and
3153                          * fire off the (possibly) blocking iwl_send_cmd()
3154                          * as we reclaim the driver command queue */
3155                         if (rxb && rxb->skb)
3156                                 iwl4965_tx_cmd_complete(priv, rxb);
3157                         else
3158                                 IWL_WARNING("Claim null rxb?\n");
3159                 }
3160
3161                 /* For now we just don't re-use anything.  We can tweak this
3162                  * later to try and re-use notification packets and SKBs that
3163                  * fail to Rx correctly */
3164                 if (rxb->skb != NULL) {
3165                         priv->alloc_rxb_skb--;
3166                         dev_kfree_skb_any(rxb->skb);
3167                         rxb->skb = NULL;
3168                 }
3169
3170                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3171                                  priv->hw_params.rx_buf_size,
3172                                  PCI_DMA_FROMDEVICE);
3173                 spin_lock_irqsave(&rxq->lock, flags);
3174                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3175                 spin_unlock_irqrestore(&rxq->lock, flags);
3176                 i = (i + 1) & RX_QUEUE_MASK;
3177                 /* If there are a lot of unused frames,
3178                  * restock the Rx queue so ucode wont assert. */
3179                 if (fill_rx) {
3180                         count++;
3181                         if (count >= 8) {
3182                                 priv->rxq.read = i;
3183                                 __iwl_rx_replenish(priv);
3184                                 count = 0;
3185                         }
3186                 }
3187         }
3188
3189         /* Backtrack one entry */
3190         priv->rxq.read = i;
3191         iwl_rx_queue_restock(priv);
3192 }
3193 /* Convert linear signal-to-noise ratio into dB */
3194 static u8 ratio2dB[100] = {
3195 /*       0   1   2   3   4   5   6   7   8   9 */
3196          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3197         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3198         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3199         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3200         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3201         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3202         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3203         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3204         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3205         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3206 };
3207
3208 /* Calculates a relative dB value from a ratio of linear
3209  *   (i.e. not dB) signal levels.
3210  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3211 int iwl4965_calc_db_from_ratio(int sig_ratio)
3212 {
3213         /* 1000:1 or higher just report as 60 dB */
3214         if (sig_ratio >= 1000)
3215                 return 60;
3216
3217         /* 100:1 or higher, divide by 10 and use table,
3218          *   add 20 dB to make up for divide by 10 */
3219         if (sig_ratio >= 100)
3220                 return (20 + (int)ratio2dB[sig_ratio/10]);
3221
3222         /* We shouldn't see this */
3223         if (sig_ratio < 1)
3224                 return 0;
3225
3226         /* Use table for ratios 1:1 - 99:1 */
3227         return (int)ratio2dB[sig_ratio];
3228 }
3229
3230 #define PERFECT_RSSI (-20) /* dBm */
3231 #define WORST_RSSI (-95)   /* dBm */
3232 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3233
3234 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3235  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3236  *   about formulas used below. */
3237 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3238 {
3239         int sig_qual;
3240         int degradation = PERFECT_RSSI - rssi_dbm;
3241
3242         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3243          * as indicator; formula is (signal dbm - noise dbm).
3244          * SNR at or above 40 is a great signal (100%).
3245          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3246          * Weakest usable signal is usually 10 - 15 dB SNR. */
3247         if (noise_dbm) {
3248                 if (rssi_dbm - noise_dbm >= 40)
3249                         return 100;
3250                 else if (rssi_dbm < noise_dbm)
3251                         return 0;
3252                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3253
3254         /* Else use just the signal level.
3255          * This formula is a least squares fit of data points collected and
3256          *   compared with a reference system that had a percentage (%) display
3257          *   for signal quality. */
3258         } else
3259                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3260                             (15 * RSSI_RANGE + 62 * degradation)) /
3261                            (RSSI_RANGE * RSSI_RANGE);
3262
3263         if (sig_qual > 100)
3264                 sig_qual = 100;
3265         else if (sig_qual < 1)
3266                 sig_qual = 0;
3267
3268         return sig_qual;
3269 }
3270
3271 /**
3272  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
3273  */
3274 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
3275                                   struct iwl_tx_queue *txq)
3276 {
3277         u32 reg = 0;
3278         int rc = 0;
3279         int txq_id = txq->q.id;
3280
3281         if (txq->need_update == 0)
3282                 return rc;
3283
3284         /* if we're trying to save power */
3285         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3286                 /* wake up nic if it's powered down ...
3287                  * uCode will wake up, and interrupt us again, so next
3288                  * time we'll skip this part. */
3289                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3290
3291                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3292                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3293                         iwl_set_bit(priv, CSR_GP_CNTRL,
3294                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3295                         return rc;
3296                 }
3297
3298                 /* restore this queue's parameters in nic hardware. */
3299                 rc = iwl_grab_nic_access(priv);
3300                 if (rc)
3301                         return rc;
3302                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3303                                      txq->q.write_ptr | (txq_id << 8));
3304                 iwl_release_nic_access(priv);
3305
3306         /* else not in power-save mode, uCode will never sleep when we're
3307          * trying to tx (during RFKILL, we're not trying to tx). */
3308         } else
3309                 iwl_write32(priv, HBUS_TARG_WRPTR,
3310                             txq->q.write_ptr | (txq_id << 8));
3311
3312         txq->need_update = 0;
3313
3314         return rc;
3315 }
3316
3317 #ifdef CONFIG_IWLWIFI_DEBUG
3318 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
3319 {
3320         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
3321         DECLARE_MAC_BUF(mac);
3322
3323         IWL_DEBUG_RADIO("RX CONFIG:\n");
3324         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3325         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3326         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3327         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3328                         le32_to_cpu(rxon->filter_flags));
3329         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3330         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3331                         rxon->ofdm_basic_rates);
3332         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3333         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3334                         print_mac(mac, rxon->node_addr));
3335         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3336                         print_mac(mac, rxon->bssid_addr));
3337         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3338 }
3339 #endif
3340
3341 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
3342 {
3343         IWL_DEBUG_ISR("Enabling interrupts\n");
3344         set_bit(STATUS_INT_ENABLED, &priv->status);
3345         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3346 }
3347
3348 /* call this function to flush any scheduled tasklet */
3349 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3350 {
3351         /* wait to make sure we flush pedding tasklet*/
3352         synchronize_irq(priv->pci_dev->irq);
3353         tasklet_kill(&priv->irq_tasklet);
3354 }
3355
3356 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
3357 {
3358         clear_bit(STATUS_INT_ENABLED, &priv->status);
3359
3360         /* disable interrupts from uCode/NIC to host */
3361         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3362
3363         /* acknowledge/clear/reset any interrupts still pending
3364          * from uCode or flow handler (Rx/Tx DMA) */
3365         iwl_write32(priv, CSR_INT, 0xffffffff);
3366         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3367         IWL_DEBUG_ISR("Disabled interrupts\n");
3368 }
3369
3370 static const char *desc_lookup(int i)
3371 {
3372         switch (i) {
3373         case 1:
3374                 return "FAIL";
3375         case 2:
3376                 return "BAD_PARAM";
3377         case 3:
3378                 return "BAD_CHECKSUM";
3379         case 4:
3380                 return "NMI_INTERRUPT";
3381         case 5:
3382                 return "SYSASSERT";
3383         case 6:
3384                 return "FATAL_ERROR";
3385         }
3386
3387         return "UNKNOWN";
3388 }
3389
3390 #define ERROR_START_OFFSET  (1 * sizeof(u32))
3391 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
3392
3393 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
3394 {
3395         u32 data2, line;
3396         u32 desc, time, count, base, data1;
3397         u32 blink1, blink2, ilink1, ilink2;
3398         int rc;
3399
3400         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3401
3402         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3403                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3404                 return;
3405         }
3406
3407         rc = iwl_grab_nic_access(priv);
3408         if (rc) {
3409                 IWL_WARNING("Can not read from adapter at this time.\n");
3410                 return;
3411         }
3412
3413         count = iwl_read_targ_mem(priv, base);
3414
3415         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3416                 IWL_ERROR("Start IWL Error Log Dump:\n");
3417                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3418         }
3419
3420         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
3421         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
3422         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
3423         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
3424         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
3425         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
3426         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
3427         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
3428         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
3429
3430         IWL_ERROR("Desc               Time       "
3431                   "data1      data2      line\n");
3432         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3433                   desc_lookup(desc), desc, time, data1, data2, line);
3434         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
3435         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
3436                   ilink1, ilink2);
3437
3438         iwl_release_nic_access(priv);
3439 }
3440
3441 #define EVENT_START_OFFSET  (4 * sizeof(u32))
3442
3443 /**
3444  * iwl4965_print_event_log - Dump error event log to syslog
3445  *
3446  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3447  */
3448 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
3449                                 u32 num_events, u32 mode)
3450 {
3451         u32 i;
3452         u32 base;       /* SRAM byte address of event log header */
3453         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3454         u32 ptr;        /* SRAM byte address of log data */
3455         u32 ev, time, data; /* event log data */
3456
3457         if (num_events == 0)
3458                 return;
3459
3460         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3461
3462         if (mode == 0)
3463                 event_size = 2 * sizeof(u32);
3464         else
3465                 event_size = 3 * sizeof(u32);
3466
3467         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3468
3469         /* "time" is actually "data" for mode 0 (no timestamp).
3470          * place event id # at far right for easier visual parsing. */
3471         for (i = 0; i < num_events; i++) {
3472                 ev = iwl_read_targ_mem(priv, ptr);
3473                 ptr += sizeof(u32);
3474                 time = iwl_read_targ_mem(priv, ptr);
3475                 ptr += sizeof(u32);
3476                 if (mode == 0)
3477                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
3478                 else {
3479                         data = iwl_read_targ_mem(priv, ptr);
3480                         ptr += sizeof(u32);
3481                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
3482                 }
3483         }
3484 }
3485
3486 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
3487 {
3488         int rc;
3489         u32 base;       /* SRAM byte address of event log header */
3490         u32 capacity;   /* event log capacity in # entries */
3491         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
3492         u32 num_wraps;  /* # times uCode wrapped to top of log */
3493         u32 next_entry; /* index of next entry to be written by uCode */
3494         u32 size;       /* # entries that we'll print */
3495
3496         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3497         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3498                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
3499                 return;
3500         }
3501
3502         rc = iwl_grab_nic_access(priv);
3503         if (rc) {
3504                 IWL_WARNING("Can not read from adapter at this time.\n");
3505                 return;
3506         }
3507
3508         /* event log header */
3509         capacity = iwl_read_targ_mem(priv, base);
3510         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3511         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3512         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3513
3514         size = num_wraps ? capacity : next_entry;
3515
3516         /* bail out if nothing in log */
3517         if (size == 0) {
3518                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
3519                 iwl_release_nic_access(priv);
3520                 return;
3521         }
3522
3523         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
3524                   size, num_wraps);
3525
3526         /* if uCode has wrapped back to top of log, start at the oldest entry,
3527          * i.e the next one that uCode would fill. */
3528         if (num_wraps)
3529                 iwl4965_print_event_log(priv, next_entry,
3530                                     capacity - next_entry, mode);
3531
3532         /* (then/else) start at top of log */
3533         iwl4965_print_event_log(priv, 0, next_entry, mode);
3534
3535         iwl_release_nic_access(priv);
3536 }
3537
3538 /**
3539  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
3540  */
3541 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
3542 {
3543         /* Set the FW error flag -- cleared on iwl4965_down */
3544         set_bit(STATUS_FW_ERROR, &priv->status);
3545
3546         /* Cancel currently queued command. */
3547         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3548
3549 #ifdef CONFIG_IWLWIFI_DEBUG
3550         if (priv->debug_level & IWL_DL_FW_ERRORS) {
3551                 iwl4965_dump_nic_error_log(priv);
3552                 iwl4965_dump_nic_event_log(priv);
3553                 iwl4965_print_rx_config_cmd(priv);
3554         }
3555 #endif
3556
3557         wake_up_interruptible(&priv->wait_command_queue);
3558
3559         /* Keep the restart process from trying to send host
3560          * commands by clearing the INIT status bit */
3561         clear_bit(STATUS_READY, &priv->status);
3562
3563         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3564                 IWL_DEBUG(IWL_DL_FW_ERRORS,
3565                           "Restarting adapter due to uCode error.\n");
3566
3567                 if (iwl_is_associated(priv)) {
3568                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
3569                                sizeof(priv->recovery_rxon));
3570                         priv->error_recovering = 1;
3571                 }
3572                 if (priv->cfg->mod_params->restart_fw)
3573                         queue_work(priv->workqueue, &priv->restart);
3574         }
3575 }
3576
3577 static void iwl4965_error_recovery(struct iwl_priv *priv)
3578 {
3579         unsigned long flags;
3580
3581         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
3582                sizeof(priv->staging_rxon));
3583         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3584         iwl4965_commit_rxon(priv);
3585
3586         iwl4965_rxon_add_station(priv, priv->bssid, 1);
3587
3588         spin_lock_irqsave(&priv->lock, flags);
3589         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
3590         priv->error_recovering = 0;
3591         spin_unlock_irqrestore(&priv->lock, flags);
3592 }
3593
3594 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
3595 {
3596         u32 inta, handled = 0;
3597         u32 inta_fh;
3598         unsigned long flags;
3599 #ifdef CONFIG_IWLWIFI_DEBUG
3600         u32 inta_mask;
3601 #endif
3602
3603         spin_lock_irqsave(&priv->lock, flags);
3604
3605         /* Ack/clear/reset pending uCode interrupts.
3606          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3607          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
3608         inta = iwl_read32(priv, CSR_INT);
3609         iwl_write32(priv, CSR_INT, inta);
3610
3611         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3612          * Any new interrupts that happen after this, either while we're
3613          * in this tasklet, or later, will show up in next ISR/tasklet. */
3614         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3615         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
3616
3617 #ifdef CONFIG_IWLWIFI_DEBUG
3618         if (priv->debug_level & IWL_DL_ISR) {
3619                 /* just for debug */
3620                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3621                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3622                               inta, inta_mask, inta_fh);
3623         }
3624 #endif
3625
3626         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3627          * atomic, make sure that inta covers all the interrupts that
3628          * we've discovered, even if FH interrupt came in just after
3629          * reading CSR_INT. */
3630         if (inta_fh & CSR49_FH_INT_RX_MASK)
3631                 inta |= CSR_INT_BIT_FH_RX;
3632         if (inta_fh & CSR49_FH_INT_TX_MASK)
3633                 inta |= CSR_INT_BIT_FH_TX;
3634
3635         /* Now service all interrupt bits discovered above. */
3636         if (inta & CSR_INT_BIT_HW_ERR) {
3637                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
3638
3639                 /* Tell the device to stop sending interrupts */
3640                 iwl4965_disable_interrupts(priv);
3641
3642                 iwl4965_irq_handle_error(priv);
3643
3644                 handled |= CSR_INT_BIT_HW_ERR;
3645
3646                 spin_unlock_irqrestore(&priv->lock, flags);
3647
3648                 return;
3649         }
3650
3651 #ifdef CONFIG_IWLWIFI_DEBUG
3652         if (priv->debug_level & (IWL_DL_ISR)) {
3653                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
3654                 if (inta & CSR_INT_BIT_SCD)
3655                         IWL_DEBUG_ISR("Scheduler finished to transmit "
3656                                       "the frame/frames.\n");
3657
3658                 /* Alive notification via Rx interrupt will do the real work */
3659                 if (inta & CSR_INT_BIT_ALIVE)
3660                         IWL_DEBUG_ISR("Alive interrupt\n");
3661         }
3662 #endif
3663         /* Safely ignore these bits for debug checks below */
3664         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
3665
3666         /* HW RF KILL switch toggled */
3667         if (inta & CSR_INT_BIT_RF_KILL) {
3668                 int hw_rf_kill = 0;
3669                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
3670                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
3671                         hw_rf_kill = 1;
3672
3673                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
3674                                 hw_rf_kill ? "disable radio":"enable radio");
3675
3676                 /* Queue restart only if RF_KILL switch was set to "kill"
3677                  *   when we loaded driver, and is now set to "enable".
3678                  * After we're Alive, RF_KILL gets handled by
3679                  *   iwl4965_rx_card_state_notif() */
3680                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
3681                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
3682                         queue_work(priv->workqueue, &priv->restart);
3683                 }
3684
3685                 handled |= CSR_INT_BIT_RF_KILL;
3686         }
3687
3688         /* Chip got too hot and stopped itself */
3689         if (inta & CSR_INT_BIT_CT_KILL) {
3690                 IWL_ERROR("Microcode CT kill error detected.\n");
3691                 handled |= CSR_INT_BIT_CT_KILL;
3692         }
3693
3694         /* Error detected by uCode */
3695         if (inta & CSR_INT_BIT_SW_ERR) {
3696                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
3697                           inta);
3698                 iwl4965_irq_handle_error(priv);
3699                 handled |= CSR_INT_BIT_SW_ERR;
3700         }
3701
3702         /* uCode wakes up after power-down sleep */
3703         if (inta & CSR_INT_BIT_WAKEUP) {
3704                 IWL_DEBUG_ISR("Wakeup interrupt\n");
3705                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3706                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
3707                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
3708                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
3709                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
3710                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
3711                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
3712
3713                 handled |= CSR_INT_BIT_WAKEUP;
3714         }
3715
3716         /* All uCode command responses, including Tx command responses,
3717          * Rx "responses" (frame-received notification), and other
3718          * notifications from uCode come through here*/
3719         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3720                 iwl_rx_handle(priv);
3721                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3722         }
3723
3724         if (inta & CSR_INT_BIT_FH_TX) {
3725                 IWL_DEBUG_ISR("Tx interrupt\n");
3726                 handled |= CSR_INT_BIT_FH_TX;
3727         }
3728
3729         if (inta & ~handled)
3730                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
3731
3732         if (inta & ~CSR_INI_SET_MASK) {
3733                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
3734                          inta & ~CSR_INI_SET_MASK);
3735                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
3736         }
3737
3738         /* Re-enable all interrupts */
3739         /* only Re-enable if diabled by irq */
3740         if (test_bit(STATUS_INT_ENABLED, &priv->status))
3741                 iwl4965_enable_interrupts(priv);
3742
3743 #ifdef CONFIG_IWLWIFI_DEBUG
3744         if (priv->debug_level & (IWL_DL_ISR)) {
3745                 inta = iwl_read32(priv, CSR_INT);
3746                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3747                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3748                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3749                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3750         }
3751 #endif
3752         spin_unlock_irqrestore(&priv->lock, flags);
3753 }
3754
3755 static irqreturn_t iwl4965_isr(int irq, void *data)
3756 {
3757         struct iwl_priv *priv = data;
3758         u32 inta, inta_mask;
3759         u32 inta_fh;
3760         if (!priv)
3761                 return IRQ_NONE;
3762
3763         spin_lock(&priv->lock);
3764
3765         /* Disable (but don't clear!) interrupts here to avoid
3766          *    back-to-back ISRs and sporadic interrupts from our NIC.
3767          * If we have something to service, the tasklet will re-enable ints.
3768          * If we *don't* have something, we'll re-enable before leaving here. */
3769         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
3770         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3771
3772         /* Discover which interrupts are active/pending */
3773         inta = iwl_read32(priv, CSR_INT);
3774         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3775
3776         /* Ignore interrupt if there's nothing in NIC to service.
3777          * This may be due to IRQ shared with another device,
3778          * or due to sporadic interrupts thrown from our NIC. */
3779         if (!inta && !inta_fh) {
3780                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3781                 goto none;
3782         }
3783
3784         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3785                 /* Hardware disappeared. It might have already raised
3786                  * an interrupt */
3787                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
3788                 goto unplugged;
3789         }
3790
3791         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3792                       inta, inta_mask, inta_fh);
3793
3794         inta &= ~CSR_INT_BIT_SCD;
3795
3796         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
3797         if (likely(inta || inta_fh))
3798                 tasklet_schedule(&priv->irq_tasklet);
3799
3800  unplugged:
3801         spin_unlock(&priv->lock);
3802         return IRQ_HANDLED;
3803
3804  none:
3805         /* re-enable interrupts here since we don't have anything to service. */
3806         /* only Re-enable if diabled by irq */
3807         if (test_bit(STATUS_INT_ENABLED, &priv->status))
3808                 iwl4965_enable_interrupts(priv);
3809         spin_unlock(&priv->lock);
3810         return IRQ_NONE;
3811 }
3812
3813 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3814  * sending probe req.  This should be set long enough to hear probe responses
3815  * from more than one AP.  */
3816 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
3817 #define IWL_ACTIVE_DWELL_TIME_52    (10)
3818
3819 /* For faster active scanning, scan will move to the next channel if fewer than
3820  * PLCP_QUIET_THRESH packets are heard on this channel within
3821  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
3822  * time if it's a quiet channel (nothing responded to our probe, and there's
3823  * no other traffic).
3824  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3825 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
3826 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
3827
3828 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3829  * Must be set longer than active dwell time.
3830  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
3831 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
3832 #define IWL_PASSIVE_DWELL_TIME_52   (10)
3833 #define IWL_PASSIVE_DWELL_BASE      (100)
3834 #define IWL_CHANNEL_TUNE_TIME       5
3835
3836 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
3837                                                 enum ieee80211_band band)
3838 {
3839         if (band == IEEE80211_BAND_5GHZ)
3840                 return IWL_ACTIVE_DWELL_TIME_52;
3841         else
3842                 return IWL_ACTIVE_DWELL_TIME_24;
3843 }
3844
3845 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
3846                                           enum ieee80211_band band)
3847 {
3848         u16 active = iwl4965_get_active_dwell_time(priv, band);
3849         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
3850             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
3851             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
3852
3853         if (iwl_is_associated(priv)) {
3854                 /* If we're associated, we clamp the maximum passive
3855                  * dwell time to be 98% of the beacon interval (minus
3856                  * 2 * channel tune time) */
3857                 passive = priv->beacon_int;
3858                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
3859                         passive = IWL_PASSIVE_DWELL_BASE;
3860                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
3861         }
3862
3863         if (passive <= active)
3864                 passive = active + 1;
3865
3866         return passive;
3867 }
3868
3869 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
3870                                          enum ieee80211_band band,
3871                                      u8 is_active, u8 direct_mask,
3872                                      struct iwl4965_scan_channel *scan_ch)
3873 {
3874         const struct ieee80211_channel *channels = NULL;
3875         const struct ieee80211_supported_band *sband;
3876         const struct iwl_channel_info *ch_info;
3877         u16 passive_dwell = 0;
3878         u16 active_dwell = 0;
3879         int added, i;
3880
3881         sband = iwl_get_hw_mode(priv, band);
3882         if (!sband)
3883                 return 0;
3884
3885         channels = sband->channels;
3886
3887         active_dwell = iwl4965_get_active_dwell_time(priv, band);
3888         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
3889
3890         for (i = 0, added = 0; i < sband->n_channels; i++) {
3891                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3892                         continue;
3893
3894                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
3895
3896                 ch_info = iwl_get_channel_info(priv, band,
3897                                          scan_ch->channel);
3898                 if (!is_channel_valid(ch_info)) {
3899                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
3900                                        scan_ch->channel);
3901                         continue;
3902                 }
3903
3904                 if (!is_active || is_channel_passive(ch_info) ||
3905                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
3906                         scan_ch->type = 0;      /* passive */
3907                 else
3908                         scan_ch->type = 1;      /* active */
3909
3910                 if (scan_ch->type & 1)
3911                         scan_ch->type |= (direct_mask << 1);
3912
3913                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3914                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3915
3916                 /* Set txpower levels to defaults */
3917                 scan_ch->tpc.dsp_atten = 110;
3918                 /* scan_pwr_info->tpc.dsp_atten; */
3919
3920                 /*scan_pwr_info->tpc.tx_gain; */
3921                 if (band == IEEE80211_BAND_5GHZ)
3922                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3923                 else {
3924                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3925                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3926                          * power level:
3927                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3928                          */
3929                 }
3930
3931                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3932                                scan_ch->channel,
3933                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3934                                (scan_ch->type & 1) ?
3935                                active_dwell : passive_dwell);
3936
3937                 scan_ch++;
3938                 added++;
3939         }
3940
3941         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3942         return added;
3943 }
3944
3945 /******************************************************************************
3946  *
3947  * uCode download functions
3948  *
3949  ******************************************************************************/
3950
3951 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
3952 {
3953         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3954         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3955         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3956         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3957         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3958         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3959 }
3960
3961 static void iwl4965_nic_start(struct iwl_priv *priv)
3962 {
3963         /* Remove all resets to allow NIC to operate */
3964         iwl_write32(priv, CSR_RESET, 0);
3965 }
3966
3967
3968 /**
3969  * iwl4965_read_ucode - Read uCode images from disk file.
3970  *
3971  * Copy into buffers for card to fetch via bus-mastering
3972  */
3973 static int iwl4965_read_ucode(struct iwl_priv *priv)
3974 {
3975         struct iwl4965_ucode *ucode;
3976         int ret;
3977         const struct firmware *ucode_raw;
3978         const char *name = priv->cfg->fw_name;
3979         u8 *src;
3980         size_t len;
3981         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3982
3983         /* Ask kernel firmware_class module to get the boot firmware off disk.
3984          * request_firmware() is synchronous, file is in memory on return. */
3985         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3986         if (ret < 0) {
3987                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3988                                         name, ret);
3989                 goto error;
3990         }
3991
3992         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3993                        name, ucode_raw->size);
3994
3995         /* Make sure that we got at least our header! */
3996         if (ucode_raw->size < sizeof(*ucode)) {
3997                 IWL_ERROR("File size way too small!\n");
3998                 ret = -EINVAL;
3999                 goto err_release;
4000         }
4001
4002         /* Data from ucode file:  header followed by uCode images */
4003         ucode = (void *)ucode_raw->data;
4004
4005         ver = le32_to_cpu(ucode->ver);
4006         inst_size = le32_to_cpu(ucode->inst_size);
4007         data_size = le32_to_cpu(ucode->data_size);
4008         init_size = le32_to_cpu(ucode->init_size);
4009         init_data_size = le32_to_cpu(ucode->init_data_size);
4010         boot_size = le32_to_cpu(ucode->boot_size);
4011
4012         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
4013         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
4014                        inst_size);
4015         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
4016                        data_size);
4017         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
4018                        init_size);
4019         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
4020                        init_data_size);
4021         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
4022                        boot_size);
4023
4024         /* Verify size of file vs. image size info in file's header */
4025         if (ucode_raw->size < sizeof(*ucode) +
4026                 inst_size + data_size + init_size +
4027                 init_data_size + boot_size) {
4028
4029                 IWL_DEBUG_INFO("uCode file size %d too small\n",
4030                                (int)ucode_raw->size);
4031                 ret = -EINVAL;
4032                 goto err_release;
4033         }
4034
4035         /* Verify that uCode images will fit in card's SRAM */
4036         if (inst_size > priv->hw_params.max_inst_size) {
4037                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4038                                inst_size);
4039                 ret = -EINVAL;
4040                 goto err_release;
4041         }
4042
4043         if (data_size > priv->hw_params.max_data_size) {
4044                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4045                                 data_size);
4046                 ret = -EINVAL;
4047                 goto err_release;
4048         }
4049         if (init_size > priv->hw_params.max_inst_size) {
4050                 IWL_DEBUG_INFO
4051                     ("uCode init instr len %d too large to fit in\n",
4052                       init_size);
4053                 ret = -EINVAL;
4054                 goto err_release;
4055         }
4056         if (init_data_size > priv->hw_params.max_data_size) {
4057                 IWL_DEBUG_INFO
4058                     ("uCode init data len %d too large to fit in\n",
4059                       init_data_size);
4060                 ret = -EINVAL;
4061                 goto err_release;
4062         }
4063         if (boot_size > priv->hw_params.max_bsm_size) {
4064                 IWL_DEBUG_INFO
4065                     ("uCode boot instr len %d too large to fit in\n",
4066                       boot_size);
4067                 ret = -EINVAL;
4068                 goto err_release;
4069         }
4070
4071         /* Allocate ucode buffers for card's bus-master loading ... */
4072
4073         /* Runtime instructions and 2 copies of data:
4074          * 1) unmodified from disk
4075          * 2) backup cache for save/restore during power-downs */
4076         priv->ucode_code.len = inst_size;
4077         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
4078
4079         priv->ucode_data.len = data_size;
4080         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
4081
4082         priv->ucode_data_backup.len = data_size;
4083         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4084
4085         /* Initialization instructions and data */
4086         if (init_size && init_data_size) {
4087                 priv->ucode_init.len = init_size;
4088                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4089
4090                 priv->ucode_init_data.len = init_data_size;
4091                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4092
4093                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4094                         goto err_pci_alloc;
4095         }
4096
4097         /* Bootstrap (instructions only, no data) */
4098         if (boot_size) {
4099                 priv->ucode_boot.len = boot_size;
4100                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
4101
4102                 if (!priv->ucode_boot.v_addr)
4103                         goto err_pci_alloc;
4104         }
4105
4106         /* Copy images into buffers for card's bus-master reads ... */
4107
4108         /* Runtime instructions (first block of data in file) */
4109         src = &ucode->data[0];
4110         len = priv->ucode_code.len;
4111         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
4112         memcpy(priv->ucode_code.v_addr, src, len);
4113         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4114                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4115
4116         /* Runtime data (2nd block)
4117          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
4118         src = &ucode->data[inst_size];
4119         len = priv->ucode_data.len;
4120         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
4121         memcpy(priv->ucode_data.v_addr, src, len);
4122         memcpy(priv->ucode_data_backup.v_addr, src, len);
4123
4124         /* Initialization instructions (3rd block) */
4125         if (init_size) {
4126                 src = &ucode->data[inst_size + data_size];
4127                 len = priv->ucode_init.len;
4128                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4129                                 len);
4130                 memcpy(priv->ucode_init.v_addr, src, len);
4131         }
4132
4133         /* Initialization data (4th block) */
4134         if (init_data_size) {
4135                 src = &ucode->data[inst_size + data_size + init_size];
4136                 len = priv->ucode_init_data.len;
4137                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
4138                                len);
4139                 memcpy(priv->ucode_init_data.v_addr, src, len);
4140         }
4141
4142         /* Bootstrap instructions (5th block) */
4143         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4144         len = priv->ucode_boot.len;
4145         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
4146         memcpy(priv->ucode_boot.v_addr, src, len);
4147
4148         /* We have our copies now, allow OS release its copies */
4149         release_firmware(ucode_raw);
4150         return 0;
4151
4152  err_pci_alloc:
4153         IWL_ERROR("failed to allocate pci memory\n");
4154         ret = -ENOMEM;
4155         iwl4965_dealloc_ucode_pci(priv);
4156
4157  err_release:
4158         release_firmware(ucode_raw);
4159
4160  error:
4161         return ret;
4162 }
4163
4164 /**
4165  * iwl4965_alive_start - called after REPLY_ALIVE notification received
4166  *                   from protocol/runtime uCode (initialization uCode's
4167  *                   Alive gets handled by iwl4965_init_alive_start()).
4168  */
4169 static void iwl4965_alive_start(struct iwl_priv *priv)
4170 {
4171         int ret = 0;
4172
4173         IWL_DEBUG_INFO("Runtime Alive received.\n");
4174
4175         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4176                 /* We had an error bringing up the hardware, so take it
4177                  * all the way back down so we can try again */
4178                 IWL_DEBUG_INFO("Alive failed.\n");
4179                 goto restart;
4180         }
4181
4182         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4183          * This is a paranoid check, because we would not have gotten the
4184          * "runtime" alive if code weren't properly loaded.  */
4185         if (iwl_verify_ucode(priv)) {
4186                 /* Runtime instruction load was bad;
4187                  * take it all the way back down so we can try again */
4188                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4189                 goto restart;
4190         }
4191
4192         iwlcore_clear_stations_table(priv);
4193
4194         ret = priv->cfg->ops->lib->alive_notify(priv);
4195         if (ret) {
4196                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
4197                             ret);
4198                 goto restart;
4199         }
4200
4201         /* After the ALIVE response, we can send host commands to 4965 uCode */
4202         set_bit(STATUS_ALIVE, &priv->status);
4203
4204         /* Clear out the uCode error bit if it is set */
4205         clear_bit(STATUS_FW_ERROR, &priv->status);
4206
4207         if (iwl_is_rfkill(priv))
4208                 return;
4209
4210         ieee80211_start_queues(priv->hw);
4211
4212         priv->active_rate = priv->rates_mask;
4213         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4214
4215         if (iwl_is_associated(priv)) {
4216                 struct iwl4965_rxon_cmd *active_rxon =
4217                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
4218
4219                 memcpy(&priv->staging_rxon, &priv->active_rxon,
4220                        sizeof(priv->staging_rxon));
4221                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4222         } else {
4223                 /* Initialize our rx_config data */
4224                 iwl4965_connection_init_rx_config(priv);
4225                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4226         }
4227
4228         /* Configure Bluetooth device coexistence support */
4229         iwl4965_send_bt_config(priv);
4230
4231         /* Configure the adapter for unassociated operation */
4232         iwl4965_commit_rxon(priv);
4233
4234         /* At this point, the NIC is initialized and operational */
4235         priv->notif_missed_beacons = 0;
4236
4237         iwl4965_rf_kill_ct_config(priv);
4238
4239         iwl_leds_register(priv);
4240
4241         IWL_DEBUG_INFO("ALIVE processing complete.\n");
4242         set_bit(STATUS_READY, &priv->status);
4243         wake_up_interruptible(&priv->wait_command_queue);
4244
4245         if (priv->error_recovering)
4246                 iwl4965_error_recovery(priv);
4247
4248         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
4249         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
4250         return;
4251
4252  restart:
4253         queue_work(priv->workqueue, &priv->restart);
4254 }
4255
4256 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
4257
4258 static void __iwl4965_down(struct iwl_priv *priv)
4259 {
4260         unsigned long flags;
4261         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4262         struct ieee80211_conf *conf = NULL;
4263
4264         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4265
4266         conf = ieee80211_get_hw_conf(priv->hw);
4267
4268         if (!exit_pending)
4269                 set_bit(STATUS_EXIT_PENDING, &priv->status);
4270
4271         iwl_leds_unregister(priv);
4272
4273         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
4274
4275         iwlcore_clear_stations_table(priv);
4276
4277         /* Unblock any waiting calls */
4278         wake_up_interruptible_all(&priv->wait_command_queue);
4279
4280         /* Wipe out the EXIT_PENDING status bit if we are not actually
4281          * exiting the module */
4282         if (!exit_pending)
4283                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4284
4285         /* stop and reset the on-board processor */
4286         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4287
4288         /* tell the device to stop sending interrupts */
4289         spin_lock_irqsave(&priv->lock, flags);
4290         iwl4965_disable_interrupts(priv);
4291         spin_unlock_irqrestore(&priv->lock, flags);
4292         iwl_synchronize_irq(priv);
4293
4294         if (priv->mac80211_registered)
4295                 ieee80211_stop_queues(priv->hw);
4296
4297         /* If we have not previously called iwl4965_init() then
4298          * clear all bits but the RF Kill and SUSPEND bits and return */
4299         if (!iwl_is_init(priv)) {
4300                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4301                                         STATUS_RF_KILL_HW |
4302                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4303                                         STATUS_RF_KILL_SW |
4304                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4305                                         STATUS_GEO_CONFIGURED |
4306                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4307                                         STATUS_IN_SUSPEND;
4308                 goto exit;
4309         }
4310
4311         /* ...otherwise clear out all the status bits but the RF Kill and
4312          * SUSPEND bits and continue taking the NIC down. */
4313         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4314                                 STATUS_RF_KILL_HW |
4315                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4316                                 STATUS_RF_KILL_SW |
4317                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4318                                 STATUS_GEO_CONFIGURED |
4319                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4320                                 STATUS_IN_SUSPEND |
4321                         test_bit(STATUS_FW_ERROR, &priv->status) <<
4322                                 STATUS_FW_ERROR;
4323
4324         spin_lock_irqsave(&priv->lock, flags);
4325         iwl_clear_bit(priv, CSR_GP_CNTRL,
4326                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4327         spin_unlock_irqrestore(&priv->lock, flags);
4328
4329         iwl4965_hw_txq_ctx_stop(priv);
4330         iwl4965_hw_rxq_stop(priv);
4331
4332         spin_lock_irqsave(&priv->lock, flags);
4333         if (!iwl_grab_nic_access(priv)) {
4334                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4335                                          APMG_CLK_VAL_DMA_CLK_RQT);
4336                 iwl_release_nic_access(priv);
4337         }
4338         spin_unlock_irqrestore(&priv->lock, flags);
4339
4340         udelay(5);
4341
4342         iwl4965_hw_nic_stop_master(priv);
4343         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
4344         iwl4965_hw_nic_reset(priv);
4345         priv->cfg->ops->lib->free_shared_mem(priv);
4346
4347  exit:
4348         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
4349
4350         if (priv->ibss_beacon)
4351                 dev_kfree_skb(priv->ibss_beacon);
4352         priv->ibss_beacon = NULL;
4353
4354         /* clear out any free frames */
4355         iwl4965_clear_free_frames(priv);
4356 }
4357
4358 static void iwl4965_down(struct iwl_priv *priv)
4359 {
4360         mutex_lock(&priv->mutex);
4361         __iwl4965_down(priv);
4362         mutex_unlock(&priv->mutex);
4363
4364         iwl4965_cancel_deferred_work(priv);
4365 }
4366
4367 #define MAX_HW_RESTARTS 5
4368
4369 static int __iwl4965_up(struct iwl_priv *priv)
4370 {
4371         int i;
4372         int ret;
4373
4374         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4375                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
4376                 return -EIO;
4377         }
4378
4379         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
4380                 IWL_WARNING("Radio disabled by SW RF kill (module "
4381                             "parameter)\n");
4382                 iwl_rfkill_set_hw_state(priv);
4383                 return -ENODEV;
4384         }
4385
4386         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
4387                 IWL_ERROR("ucode not available for device bringup\n");
4388                 return -EIO;
4389         }
4390
4391         /* If platform's RF_KILL switch is NOT set to KILL */
4392         if (iwl_read32(priv, CSR_GP_CNTRL) &
4393                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4394                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4395         else {
4396                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4397                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
4398                         iwl_rfkill_set_hw_state(priv);
4399                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
4400                         return -ENODEV;
4401                 }
4402         }
4403
4404         iwl_rfkill_set_hw_state(priv);
4405         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4406
4407         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
4408         if (ret) {
4409                 IWL_ERROR("Unable to allocate shared memory\n");
4410                 return ret;
4411         }
4412
4413         ret = iwl_hw_nic_init(priv);
4414         if (ret) {
4415                 IWL_ERROR("Unable to init nic\n");
4416                 return ret;
4417         }
4418
4419         /* make sure rfkill handshake bits are cleared */
4420         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4421         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4422                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4423
4424         /* clear (again), then enable host interrupts */
4425         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4426         iwl4965_enable_interrupts(priv);
4427
4428         /* really make sure rfkill handshake bits are cleared */
4429         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4430         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4431
4432         /* Copy original ucode data image from disk into backup cache.
4433          * This will be used to initialize the on-board processor's
4434          * data SRAM for a clean start when the runtime program first loads. */
4435         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
4436                priv->ucode_data.len);
4437
4438         /* We return success when we resume from suspend and rf_kill is on. */
4439         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
4440                 return 0;
4441
4442         for (i = 0; i < MAX_HW_RESTARTS; i++) {
4443
4444                 iwlcore_clear_stations_table(priv);
4445
4446                 /* load bootstrap state machine,
4447                  * load bootstrap program into processor's memory,
4448                  * prepare to load the "initialize" uCode */
4449                 ret = priv->cfg->ops->lib->load_ucode(priv);
4450
4451                 if (ret) {
4452                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
4453                         continue;
4454                 }
4455
4456                 /* start card; "initialize" will load runtime ucode */
4457                 iwl4965_nic_start(priv);
4458
4459                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
4460
4461                 return 0;
4462         }
4463
4464         set_bit(STATUS_EXIT_PENDING, &priv->status);
4465         __iwl4965_down(priv);
4466
4467         /* tried to restart and config the device for as long as our
4468          * patience could withstand */
4469         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
4470         return -EIO;
4471 }
4472
4473
4474 /*****************************************************************************
4475  *
4476  * Workqueue callbacks
4477  *
4478  *****************************************************************************/
4479
4480 static void iwl4965_bg_init_alive_start(struct work_struct *data)
4481 {
4482         struct iwl_priv *priv =
4483             container_of(data, struct iwl_priv, init_alive_start.work);
4484
4485         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4486                 return;
4487
4488         mutex_lock(&priv->mutex);
4489         priv->cfg->ops->lib->init_alive_start(priv);
4490         mutex_unlock(&priv->mutex);
4491 }
4492
4493 static void iwl4965_bg_alive_start(struct work_struct *data)
4494 {
4495         struct iwl_priv *priv =
4496             container_of(data, struct iwl_priv, alive_start.work);
4497
4498         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4499                 return;
4500
4501         mutex_lock(&priv->mutex);
4502         iwl4965_alive_start(priv);
4503         mutex_unlock(&priv->mutex);
4504 }
4505
4506 static void iwl4965_bg_rf_kill(struct work_struct *work)
4507 {
4508         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
4509
4510         wake_up_interruptible(&priv->wait_command_queue);
4511
4512         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4513                 return;
4514
4515         mutex_lock(&priv->mutex);
4516
4517         if (!iwl_is_rfkill(priv)) {
4518                 IWL_DEBUG(IWL_DL_RF_KILL,
4519                           "HW and/or SW RF Kill no longer active, restarting "
4520                           "device\n");
4521                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4522                         queue_work(priv->workqueue, &priv->restart);
4523         } else {
4524                 /* make sure mac80211 stop sending Tx frame */
4525                 if (priv->mac80211_registered)
4526                         ieee80211_stop_queues(priv->hw);
4527
4528                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
4529                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
4530                                           "disabled by SW switch\n");
4531                 else
4532                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
4533                                     "Kill switch must be turned off for "
4534                                     "wireless networking to work.\n");
4535         }
4536         iwl_rfkill_set_hw_state(priv);
4537
4538         mutex_unlock(&priv->mutex);
4539 }
4540
4541 static void iwl4965_bg_set_monitor(struct work_struct *work)
4542 {
4543         struct iwl_priv *priv = container_of(work,
4544                                 struct iwl_priv, set_monitor);
4545
4546         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
4547
4548         mutex_lock(&priv->mutex);
4549
4550         if (!iwl_is_ready(priv))
4551                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
4552         else
4553                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
4554                         IWL_ERROR("iwl4965_set_mode() failed\n");
4555
4556         mutex_unlock(&priv->mutex);
4557 }
4558
4559 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
4560
4561 static void iwl4965_bg_scan_check(struct work_struct *data)
4562 {
4563         struct iwl_priv *priv =
4564             container_of(data, struct iwl_priv, scan_check.work);
4565
4566         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4567                 return;
4568
4569         mutex_lock(&priv->mutex);
4570         if (test_bit(STATUS_SCANNING, &priv->status) ||
4571             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4572                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
4573                         "adapter (%dms)\n",
4574                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
4575
4576                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4577                         iwl4965_send_scan_abort(priv);
4578         }
4579         mutex_unlock(&priv->mutex);
4580 }
4581
4582 static void iwl4965_bg_request_scan(struct work_struct *data)
4583 {
4584         struct iwl_priv *priv =
4585             container_of(data, struct iwl_priv, request_scan);
4586         struct iwl_host_cmd cmd = {
4587                 .id = REPLY_SCAN_CMD,
4588                 .len = sizeof(struct iwl4965_scan_cmd),
4589                 .meta.flags = CMD_SIZE_HUGE,
4590         };
4591         struct iwl4965_scan_cmd *scan;
4592         struct ieee80211_conf *conf = NULL;
4593         u16 cmd_len;
4594         enum ieee80211_band band;
4595         u8 direct_mask;
4596         int ret = 0;
4597
4598         conf = ieee80211_get_hw_conf(priv->hw);
4599
4600         mutex_lock(&priv->mutex);
4601
4602         if (!iwl_is_ready(priv)) {
4603                 IWL_WARNING("request scan called when driver not ready.\n");
4604                 goto done;
4605         }
4606
4607         /* Make sure the scan wasn't cancelled before this queued work
4608          * was given the chance to run... */
4609         if (!test_bit(STATUS_SCANNING, &priv->status))
4610                 goto done;
4611
4612         /* This should never be called or scheduled if there is currently
4613          * a scan active in the hardware. */
4614         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
4615                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
4616                                "Ignoring second request.\n");
4617                 ret = -EIO;
4618                 goto done;
4619         }
4620
4621         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4622                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
4623                 goto done;
4624         }
4625
4626         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4627                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
4628                 goto done;
4629         }
4630
4631         if (iwl_is_rfkill(priv)) {
4632                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
4633                 goto done;
4634         }
4635
4636         if (!test_bit(STATUS_READY, &priv->status)) {
4637                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
4638                 goto done;
4639         }
4640
4641         if (!priv->scan_bands) {
4642                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
4643                 goto done;
4644         }
4645
4646         if (!priv->scan) {
4647                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
4648                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
4649                 if (!priv->scan) {
4650                         ret = -ENOMEM;
4651                         goto done;
4652                 }
4653         }
4654         scan = priv->scan;
4655         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
4656
4657         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
4658         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
4659
4660         if (iwl_is_associated(priv)) {
4661                 u16 interval = 0;
4662                 u32 extra;
4663                 u32 suspend_time = 100;
4664                 u32 scan_suspend_time = 100;
4665                 unsigned long flags;
4666
4667                 IWL_DEBUG_INFO("Scanning while associated...\n");
4668
4669                 spin_lock_irqsave(&priv->lock, flags);
4670                 interval = priv->beacon_int;
4671                 spin_unlock_irqrestore(&priv->lock, flags);
4672
4673                 scan->suspend_time = 0;
4674                 scan->max_out_time = cpu_to_le32(200 * 1024);
4675                 if (!interval)
4676                         interval = suspend_time;
4677
4678                 extra = (suspend_time / interval) << 22;
4679                 scan_suspend_time = (extra |
4680                     ((suspend_time % interval) * 1024));
4681                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
4682                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
4683                                scan_suspend_time, interval);
4684         }
4685
4686         /* We should add the ability for user to lock to PASSIVE ONLY */
4687         if (priv->one_direct_scan) {
4688                 IWL_DEBUG_SCAN
4689                     ("Kicking off one direct scan for '%s'\n",
4690                      iwl4965_escape_essid(priv->direct_ssid,
4691                                       priv->direct_ssid_len));
4692                 scan->direct_scan[0].id = WLAN_EID_SSID;
4693                 scan->direct_scan[0].len = priv->direct_ssid_len;
4694                 memcpy(scan->direct_scan[0].ssid,
4695                        priv->direct_ssid, priv->direct_ssid_len);
4696                 direct_mask = 1;
4697         } else if (!iwl_is_associated(priv) && priv->essid_len) {
4698                 IWL_DEBUG_SCAN
4699                   ("Kicking off one direct scan for '%s' when not associated\n",
4700                    iwl4965_escape_essid(priv->essid, priv->essid_len));
4701                 scan->direct_scan[0].id = WLAN_EID_SSID;
4702                 scan->direct_scan[0].len = priv->essid_len;
4703                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
4704                 direct_mask = 1;
4705         } else {
4706                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
4707                 direct_mask = 0;
4708         }
4709
4710         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
4711         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
4712         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
4713
4714
4715         switch (priv->scan_bands) {
4716         case 2:
4717                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
4718                 scan->tx_cmd.rate_n_flags =
4719                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
4720                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
4721
4722                 scan->good_CRC_th = 0;
4723                 band = IEEE80211_BAND_2GHZ;
4724                 break;
4725
4726         case 1:
4727                 scan->tx_cmd.rate_n_flags =
4728                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
4729                                 RATE_MCS_ANT_B_MSK);
4730                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
4731                 band = IEEE80211_BAND_5GHZ;
4732                 break;
4733
4734         default:
4735                 IWL_WARNING("Invalid scan band count\n");
4736                 goto done;
4737         }
4738
4739         /* We don't build a direct scan probe request; the uCode will do
4740          * that based on the direct_mask added to each channel entry */
4741         cmd_len = iwl4965_fill_probe_req(priv, band,
4742                                         (struct ieee80211_mgmt *)scan->data,
4743                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
4744
4745         scan->tx_cmd.len = cpu_to_le16(cmd_len);
4746         /* select Rx chains */
4747
4748         /* Force use of chains B and C (0x6) for scan Rx.
4749          * Avoid A (0x1) because of its off-channel reception on A-band.
4750          * MIMO is not used here, but value is required to make uCode happy. */
4751         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
4752                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
4753                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
4754                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
4755
4756         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
4757                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4758
4759         if (direct_mask)
4760                 scan->channel_count =
4761                         iwl4965_get_channels_for_scan(
4762                                 priv, band, 1, /* active */
4763                                 direct_mask,
4764                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4765         else
4766                 scan->channel_count =
4767                         iwl4965_get_channels_for_scan(
4768                                 priv, band, 0, /* passive */
4769                                 direct_mask,
4770                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4771
4772         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
4773                                RXON_FILTER_BCON_AWARE_MSK);
4774         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
4775             scan->channel_count * sizeof(struct iwl4965_scan_channel);
4776         cmd.data = scan;
4777         scan->len = cpu_to_le16(cmd.len);
4778
4779         set_bit(STATUS_SCAN_HW, &priv->status);
4780         ret = iwl_send_cmd_sync(priv, &cmd);
4781         if (ret)
4782                 goto done;
4783
4784         queue_delayed_work(priv->workqueue, &priv->scan_check,
4785                            IWL_SCAN_CHECK_WATCHDOG);
4786
4787         mutex_unlock(&priv->mutex);
4788         return;
4789
4790  done:
4791         /* inform mac80211 scan aborted */
4792         queue_work(priv->workqueue, &priv->scan_completed);
4793         mutex_unlock(&priv->mutex);
4794 }
4795
4796 static void iwl4965_bg_up(struct work_struct *data)
4797 {
4798         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
4799
4800         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4801                 return;
4802
4803         mutex_lock(&priv->mutex);
4804         __iwl4965_up(priv);
4805         mutex_unlock(&priv->mutex);
4806 }
4807
4808 static void iwl4965_bg_restart(struct work_struct *data)
4809 {
4810         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
4811
4812         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4813                 return;
4814
4815         iwl4965_down(priv);
4816         queue_work(priv->workqueue, &priv->up);
4817 }
4818
4819 static void iwl4965_bg_rx_replenish(struct work_struct *data)
4820 {
4821         struct iwl_priv *priv =
4822             container_of(data, struct iwl_priv, rx_replenish);
4823
4824         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4825                 return;
4826
4827         mutex_lock(&priv->mutex);
4828         iwl_rx_replenish(priv);
4829         mutex_unlock(&priv->mutex);
4830 }
4831
4832 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4833
4834 static void iwl4965_post_associate(struct iwl_priv *priv)
4835 {
4836         struct ieee80211_conf *conf = NULL;
4837         int ret = 0;
4838         DECLARE_MAC_BUF(mac);
4839
4840         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4841                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
4842                 return;
4843         }
4844
4845         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
4846                         priv->assoc_id,
4847                         print_mac(mac, priv->active_rxon.bssid_addr));
4848
4849
4850         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4851                 return;
4852
4853
4854         if (!priv->vif || !priv->is_open)
4855                 return;
4856
4857         iwl4965_scan_cancel_timeout(priv, 200);
4858
4859         conf = ieee80211_get_hw_conf(priv->hw);
4860
4861         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4862         iwl4965_commit_rxon(priv);
4863
4864         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4865         iwl4965_setup_rxon_timing(priv);
4866         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4867                               sizeof(priv->rxon_timing), &priv->rxon_timing);
4868         if (ret)
4869                 IWL_WARNING("REPLY_RXON_TIMING failed - "
4870                             "Attempting to continue.\n");
4871
4872         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4873
4874 #ifdef CONFIG_IWL4965_HT
4875         if (priv->current_ht_config.is_ht)
4876                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4877 #endif /* CONFIG_IWL4965_HT*/
4878         iwl_set_rxon_chain(priv);
4879         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4880
4881         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4882                         priv->assoc_id, priv->beacon_int);
4883
4884         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4885                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4886         else
4887                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4888
4889         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4890                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4891                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4892                 else
4893                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4894
4895                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4896                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4897
4898         }
4899
4900         iwl4965_commit_rxon(priv);
4901
4902         switch (priv->iw_mode) {
4903         case IEEE80211_IF_TYPE_STA:
4904                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
4905                 break;
4906
4907         case IEEE80211_IF_TYPE_IBSS:
4908
4909                 /* clear out the station table */
4910                 iwlcore_clear_stations_table(priv);
4911
4912                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
4913                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
4914                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
4915                 iwl4965_send_beacon_cmd(priv);
4916
4917                 break;
4918
4919         default:
4920                 IWL_ERROR("%s Should not be called in %d mode\n",
4921                                 __FUNCTION__, priv->iw_mode);
4922                 break;
4923         }
4924
4925         iwl4965_sequence_reset(priv);
4926
4927         /* Enable Rx differential gain and sensitivity calibrations */
4928         iwl_chain_noise_reset(priv);
4929         priv->start_calib = 1;
4930
4931         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4932                 priv->assoc_station_added = 1;
4933
4934         iwl4965_activate_qos(priv, 0);
4935
4936         iwl_power_update_mode(priv, 0);
4937         /* we have just associated, don't start scan too early */
4938         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4939 }
4940
4941
4942 static void iwl4965_bg_post_associate(struct work_struct *data)
4943 {
4944         struct iwl_priv *priv = container_of(data, struct iwl_priv,
4945                                              post_associate.work);
4946
4947         mutex_lock(&priv->mutex);
4948         iwl4965_post_associate(priv);
4949         mutex_unlock(&priv->mutex);
4950
4951 }
4952
4953 static void iwl4965_bg_abort_scan(struct work_struct *work)
4954 {
4955         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
4956
4957         if (!iwl_is_ready(priv))
4958                 return;
4959
4960         mutex_lock(&priv->mutex);
4961
4962         set_bit(STATUS_SCAN_ABORTING, &priv->status);
4963         iwl4965_send_scan_abort(priv);
4964
4965         mutex_unlock(&priv->mutex);
4966 }
4967
4968 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4969
4970 static void iwl4965_bg_scan_completed(struct work_struct *work)
4971 {
4972         struct iwl_priv *priv =
4973             container_of(work, struct iwl_priv, scan_completed);
4974
4975         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4976
4977         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4978                 return;
4979
4980         if (test_bit(STATUS_CONF_PENDING, &priv->status))
4981                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4982
4983         ieee80211_scan_completed(priv->hw);
4984
4985         /* Since setting the TXPOWER may have been deferred while
4986          * performing the scan, fire one off */
4987         mutex_lock(&priv->mutex);
4988         iwl4965_hw_reg_send_txpower(priv);
4989         mutex_unlock(&priv->mutex);
4990 }
4991
4992 /*****************************************************************************
4993  *
4994  * mac80211 entry point functions
4995  *
4996  *****************************************************************************/
4997
4998 #define UCODE_READY_TIMEOUT     (2 * HZ)
4999
5000 static int iwl4965_mac_start(struct ieee80211_hw *hw)
5001 {
5002         struct iwl_priv *priv = hw->priv;
5003         int ret;
5004
5005         IWL_DEBUG_MAC80211("enter\n");
5006
5007         if (pci_enable_device(priv->pci_dev)) {
5008                 IWL_ERROR("Fail to pci_enable_device\n");
5009                 return -ENODEV;
5010         }
5011         pci_restore_state(priv->pci_dev);
5012         pci_enable_msi(priv->pci_dev);
5013
5014         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
5015                           DRV_NAME, priv);
5016         if (ret) {
5017                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
5018                 goto out_disable_msi;
5019         }
5020
5021         /* we should be verifying the device is ready to be opened */
5022         mutex_lock(&priv->mutex);
5023
5024         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
5025         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5026          * ucode filename and max sizes are card-specific. */
5027
5028         if (!priv->ucode_code.len) {
5029                 ret = iwl4965_read_ucode(priv);
5030                 if (ret) {
5031                         IWL_ERROR("Could not read microcode: %d\n", ret);
5032                         mutex_unlock(&priv->mutex);
5033                         goto out_release_irq;
5034                 }
5035         }
5036
5037         ret = __iwl4965_up(priv);
5038
5039         mutex_unlock(&priv->mutex);
5040
5041         if (ret)
5042                 goto out_release_irq;
5043
5044         IWL_DEBUG_INFO("Start UP work done.\n");
5045
5046         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5047                 return 0;
5048
5049         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5050          * mac80211 will not be run successfully. */
5051         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5052                         test_bit(STATUS_READY, &priv->status),
5053                         UCODE_READY_TIMEOUT);
5054         if (!ret) {
5055                 if (!test_bit(STATUS_READY, &priv->status)) {
5056                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
5057                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
5058                         ret = -ETIMEDOUT;
5059                         goto out_release_irq;
5060                 }
5061         }
5062
5063         priv->is_open = 1;
5064         IWL_DEBUG_MAC80211("leave\n");
5065         return 0;
5066
5067 out_release_irq:
5068         free_irq(priv->pci_dev->irq, priv);
5069 out_disable_msi:
5070         pci_disable_msi(priv->pci_dev);
5071         pci_disable_device(priv->pci_dev);
5072         priv->is_open = 0;
5073         IWL_DEBUG_MAC80211("leave - failed\n");
5074         return ret;
5075 }
5076
5077 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
5078 {
5079         struct iwl_priv *priv = hw->priv;
5080
5081         IWL_DEBUG_MAC80211("enter\n");
5082
5083         if (!priv->is_open) {
5084                 IWL_DEBUG_MAC80211("leave - skip\n");
5085                 return;
5086         }
5087
5088         priv->is_open = 0;
5089
5090         if (iwl_is_ready_rf(priv)) {
5091                 /* stop mac, cancel any scan request and clear
5092                  * RXON_FILTER_ASSOC_MSK BIT
5093                  */
5094                 mutex_lock(&priv->mutex);
5095                 iwl4965_scan_cancel_timeout(priv, 100);
5096                 cancel_delayed_work(&priv->post_associate);
5097                 mutex_unlock(&priv->mutex);
5098         }
5099
5100         iwl4965_down(priv);
5101
5102         flush_workqueue(priv->workqueue);
5103         free_irq(priv->pci_dev->irq, priv);
5104         pci_disable_msi(priv->pci_dev);
5105         pci_save_state(priv->pci_dev);
5106         pci_disable_device(priv->pci_dev);
5107
5108         IWL_DEBUG_MAC80211("leave\n");
5109 }
5110
5111 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
5112                       struct ieee80211_tx_control *ctl)
5113 {
5114         struct iwl_priv *priv = hw->priv;
5115
5116         IWL_DEBUG_MAC80211("enter\n");
5117
5118         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
5119                 IWL_DEBUG_MAC80211("leave - monitor\n");
5120                 return -1;
5121         }
5122
5123         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
5124                      ctl->tx_rate->bitrate);
5125
5126         if (iwl4965_tx_skb(priv, skb, ctl))
5127                 dev_kfree_skb_any(skb);
5128
5129         IWL_DEBUG_MAC80211("leave\n");
5130         return 0;
5131 }
5132
5133 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
5134                                  struct ieee80211_if_init_conf *conf)
5135 {
5136         struct iwl_priv *priv = hw->priv;
5137         unsigned long flags;
5138         DECLARE_MAC_BUF(mac);
5139
5140         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
5141
5142         if (priv->vif) {
5143                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
5144                 return -EOPNOTSUPP;
5145         }
5146
5147         spin_lock_irqsave(&priv->lock, flags);
5148         priv->vif = conf->vif;
5149
5150         spin_unlock_irqrestore(&priv->lock, flags);
5151
5152         mutex_lock(&priv->mutex);
5153
5154         if (conf->mac_addr) {
5155                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
5156                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
5157         }
5158
5159         if (iwl_is_ready(priv))
5160                 iwl4965_set_mode(priv, conf->type);
5161
5162         mutex_unlock(&priv->mutex);
5163
5164         IWL_DEBUG_MAC80211("leave\n");
5165         return 0;
5166 }
5167
5168 /**
5169  * iwl4965_mac_config - mac80211 config callback
5170  *
5171  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5172  * be set inappropriately and the driver currently sets the hardware up to
5173  * use it whenever needed.
5174  */
5175 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
5176 {
5177         struct iwl_priv *priv = hw->priv;
5178         const struct iwl_channel_info *ch_info;
5179         unsigned long flags;
5180         int ret = 0;
5181
5182         mutex_lock(&priv->mutex);
5183         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
5184
5185         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
5186
5187         if (!iwl_is_ready(priv)) {
5188                 IWL_DEBUG_MAC80211("leave - not ready\n");
5189                 ret = -EIO;
5190                 goto out;
5191         }
5192
5193         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
5194                      test_bit(STATUS_SCANNING, &priv->status))) {
5195                 IWL_DEBUG_MAC80211("leave - scanning\n");
5196                 set_bit(STATUS_CONF_PENDING, &priv->status);
5197                 mutex_unlock(&priv->mutex);
5198                 return 0;
5199         }
5200
5201         spin_lock_irqsave(&priv->lock, flags);
5202
5203         ch_info = iwl_get_channel_info(priv, conf->channel->band,
5204                         ieee80211_frequency_to_channel(conf->channel->center_freq));
5205         if (!is_channel_valid(ch_info)) {
5206                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5207                 spin_unlock_irqrestore(&priv->lock, flags);
5208                 ret = -EINVAL;
5209                 goto out;
5210         }
5211
5212 #ifdef CONFIG_IWL4965_HT
5213         /* if we are switching from ht to 2.4 clear flags
5214          * from any ht related info since 2.4 does not
5215          * support ht */
5216         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
5217 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5218             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
5219 #endif
5220         )
5221                 priv->staging_rxon.flags = 0;
5222 #endif /* CONFIG_IWL4965_HT */
5223
5224         iwl_set_rxon_channel(priv, conf->channel->band,
5225                 ieee80211_frequency_to_channel(conf->channel->center_freq));
5226
5227         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
5228
5229         /* The list of supported rates and rate mask can be different
5230          * for each band; since the band may have changed, reset
5231          * the rate mask to what mac80211 lists */
5232         iwl4965_set_rate(priv);
5233
5234         spin_unlock_irqrestore(&priv->lock, flags);
5235
5236 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5237         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
5238                 iwl4965_hw_channel_switch(priv, conf->channel);
5239                 goto out;
5240         }
5241 #endif
5242
5243         if (priv->cfg->ops->lib->radio_kill_sw)
5244                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
5245
5246         if (!conf->radio_enabled) {
5247                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
5248                 goto out;
5249         }
5250
5251         if (iwl_is_rfkill(priv)) {
5252                 IWL_DEBUG_MAC80211("leave - RF kill\n");
5253                 ret = -EIO;
5254                 goto out;
5255         }
5256
5257         iwl4965_set_rate(priv);
5258
5259         if (memcmp(&priv->active_rxon,
5260                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
5261                 iwl4965_commit_rxon(priv);
5262         else
5263                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5264
5265         IWL_DEBUG_MAC80211("leave\n");
5266
5267 out:
5268         clear_bit(STATUS_CONF_PENDING, &priv->status);
5269         mutex_unlock(&priv->mutex);
5270         return ret;
5271 }
5272
5273 static void iwl4965_config_ap(struct iwl_priv *priv)
5274 {
5275         int ret = 0;
5276
5277         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5278                 return;
5279
5280         /* The following should be done only at AP bring up */
5281         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
5282
5283                 /* RXON - unassoc (to set timing command) */
5284                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5285                 iwl4965_commit_rxon(priv);
5286
5287                 /* RXON Timing */
5288                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5289                 iwl4965_setup_rxon_timing(priv);
5290                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5291                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
5292                 if (ret)
5293                         IWL_WARNING("REPLY_RXON_TIMING failed - "
5294                                         "Attempting to continue.\n");
5295
5296                 iwl_set_rxon_chain(priv);
5297
5298                 /* FIXME: what should be the assoc_id for AP? */
5299                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5300                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5301                         priv->staging_rxon.flags |=
5302                                 RXON_FLG_SHORT_PREAMBLE_MSK;
5303                 else
5304                         priv->staging_rxon.flags &=
5305                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5306
5307                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5308                         if (priv->assoc_capability &
5309                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5310                                 priv->staging_rxon.flags |=
5311                                         RXON_FLG_SHORT_SLOT_MSK;
5312                         else
5313                                 priv->staging_rxon.flags &=
5314                                         ~RXON_FLG_SHORT_SLOT_MSK;
5315
5316                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5317                                 priv->staging_rxon.flags &=
5318                                         ~RXON_FLG_SHORT_SLOT_MSK;
5319                 }
5320                 /* restore RXON assoc */
5321                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5322                 iwl4965_commit_rxon(priv);
5323                 iwl4965_activate_qos(priv, 1);
5324                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
5325         }
5326         iwl4965_send_beacon_cmd(priv);
5327
5328         /* FIXME - we need to add code here to detect a totally new
5329          * configuration, reset the AP, unassoc, rxon timing, assoc,
5330          * clear sta table, add BCAST sta... */
5331 }
5332
5333 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
5334                                         struct ieee80211_vif *vif,
5335                                     struct ieee80211_if_conf *conf)
5336 {
5337         struct iwl_priv *priv = hw->priv;
5338         DECLARE_MAC_BUF(mac);
5339         unsigned long flags;
5340         int rc;
5341
5342         if (conf == NULL)
5343                 return -EIO;
5344
5345         if (priv->vif != vif) {
5346                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5347                 return 0;
5348         }
5349
5350         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
5351             (!conf->beacon || !conf->ssid_len)) {
5352                 IWL_DEBUG_MAC80211
5353                     ("Leaving in AP mode because HostAPD is not ready.\n");
5354                 return 0;
5355         }
5356
5357         if (!iwl_is_alive(priv))
5358                 return -EAGAIN;
5359
5360         mutex_lock(&priv->mutex);
5361
5362         if (conf->bssid)
5363                 IWL_DEBUG_MAC80211("bssid: %s\n",
5364                                    print_mac(mac, conf->bssid));
5365
5366 /*
5367  * very dubious code was here; the probe filtering flag is never set:
5368  *
5369         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5370             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5371  */
5372
5373         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5374                 if (!conf->bssid) {
5375                         conf->bssid = priv->mac_addr;
5376                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5377                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
5378                                            print_mac(mac, conf->bssid));
5379                 }
5380                 if (priv->ibss_beacon)
5381                         dev_kfree_skb(priv->ibss_beacon);
5382
5383                 priv->ibss_beacon = conf->beacon;
5384         }
5385
5386         if (iwl_is_rfkill(priv))
5387                 goto done;
5388
5389         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5390             !is_multicast_ether_addr(conf->bssid)) {
5391                 /* If there is currently a HW scan going on in the background
5392                  * then we need to cancel it else the RXON below will fail. */
5393                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
5394                         IWL_WARNING("Aborted scan still in progress "
5395                                     "after 100ms\n");
5396                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5397                         mutex_unlock(&priv->mutex);
5398                         return -EAGAIN;
5399                 }
5400                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5401
5402                 /* TODO: Audit driver for usage of these members and see
5403                  * if mac80211 deprecates them (priv->bssid looks like it
5404                  * shouldn't be there, but I haven't scanned the IBSS code
5405                  * to verify) - jpk */
5406                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5407
5408                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5409                         iwl4965_config_ap(priv);
5410                 else {
5411                         rc = iwl4965_commit_rxon(priv);
5412                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
5413                                 iwl4965_rxon_add_station(
5414                                         priv, priv->active_rxon.bssid_addr, 1);
5415                 }
5416
5417         } else {
5418                 iwl4965_scan_cancel_timeout(priv, 100);
5419                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5420                 iwl4965_commit_rxon(priv);
5421         }
5422
5423  done:
5424         spin_lock_irqsave(&priv->lock, flags);
5425         if (!conf->ssid_len)
5426                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5427         else
5428                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
5429
5430         priv->essid_len = conf->ssid_len;
5431         spin_unlock_irqrestore(&priv->lock, flags);
5432
5433         IWL_DEBUG_MAC80211("leave\n");
5434         mutex_unlock(&priv->mutex);
5435
5436         return 0;
5437 }
5438
5439 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
5440                                  unsigned int changed_flags,
5441                                  unsigned int *total_flags,
5442                                  int mc_count, struct dev_addr_list *mc_list)
5443 {
5444         /*
5445          * XXX: dummy
5446          * see also iwl4965_connection_init_rx_config
5447          */
5448         struct iwl_priv *priv = hw->priv;
5449         int new_flags = 0;
5450         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5451                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5452                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
5453                                            IEEE80211_IF_TYPE_MNTR,
5454                                            changed_flags, *total_flags);
5455                         /* queue work 'cuz mac80211 is holding a lock which
5456                          * prevents us from issuing (synchronous) f/w cmds */
5457                         queue_work(priv->workqueue, &priv->set_monitor);
5458                         new_flags &= FIF_PROMISC_IN_BSS |
5459                                      FIF_OTHER_BSS |
5460                                      FIF_ALLMULTI;
5461                 }
5462         }
5463         *total_flags = new_flags;
5464 }
5465
5466 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
5467                                      struct ieee80211_if_init_conf *conf)
5468 {
5469         struct iwl_priv *priv = hw->priv;
5470
5471         IWL_DEBUG_MAC80211("enter\n");
5472
5473         mutex_lock(&priv->mutex);
5474
5475         if (iwl_is_ready_rf(priv)) {
5476                 iwl4965_scan_cancel_timeout(priv, 100);
5477                 cancel_delayed_work(&priv->post_associate);
5478                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5479                 iwl4965_commit_rxon(priv);
5480         }
5481         if (priv->vif == conf->vif) {
5482                 priv->vif = NULL;
5483                 memset(priv->bssid, 0, ETH_ALEN);
5484                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5485                 priv->essid_len = 0;
5486         }
5487         mutex_unlock(&priv->mutex);
5488
5489         IWL_DEBUG_MAC80211("leave\n");
5490
5491 }
5492
5493 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
5494 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
5495                                      struct ieee80211_vif *vif,
5496                                      struct ieee80211_bss_conf *bss_conf,
5497                                      u32 changes)
5498 {
5499         struct iwl_priv *priv = hw->priv;
5500
5501         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
5502
5503         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
5504                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
5505                                    bss_conf->use_short_preamble);
5506                 if (bss_conf->use_short_preamble)
5507                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5508                 else
5509                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5510         }
5511
5512         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
5513                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
5514                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
5515                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
5516                 else
5517                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5518         }
5519
5520         if (changes & BSS_CHANGED_HT) {
5521                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
5522                 iwl4965_ht_conf(priv, bss_conf);
5523                 iwl_set_rxon_chain(priv);
5524         }
5525
5526         if (changes & BSS_CHANGED_ASSOC) {
5527                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
5528                 /* This should never happen as this function should
5529                  * never be called from interrupt context. */
5530                 if (WARN_ON_ONCE(in_interrupt()))
5531                         return;
5532                 if (bss_conf->assoc) {
5533                         priv->assoc_id = bss_conf->aid;
5534                         priv->beacon_int = bss_conf->beacon_int;
5535                         priv->timestamp = bss_conf->timestamp;
5536                         priv->assoc_capability = bss_conf->assoc_capability;
5537                         priv->next_scan_jiffies = jiffies +
5538                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
5539                         mutex_lock(&priv->mutex);
5540                         iwl4965_post_associate(priv);
5541                         mutex_unlock(&priv->mutex);
5542                 } else {
5543                         priv->assoc_id = 0;
5544                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
5545                 }
5546         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
5547                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
5548                         iwl_send_rxon_assoc(priv);
5549         }
5550
5551 }
5552
5553 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
5554 {
5555         int rc = 0;
5556         unsigned long flags;
5557         struct iwl_priv *priv = hw->priv;
5558
5559         IWL_DEBUG_MAC80211("enter\n");
5560
5561         mutex_lock(&priv->mutex);
5562         spin_lock_irqsave(&priv->lock, flags);
5563
5564         if (!iwl_is_ready_rf(priv)) {
5565                 rc = -EIO;
5566                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
5567                 goto out_unlock;
5568         }
5569
5570         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
5571                 rc = -EIO;
5572                 IWL_ERROR("ERROR: APs don't scan\n");
5573                 goto out_unlock;
5574         }
5575
5576         /* we don't schedule scan within next_scan_jiffies period */
5577         if (priv->next_scan_jiffies &&
5578                         time_after(priv->next_scan_jiffies, jiffies)) {
5579                 rc = -EAGAIN;
5580                 goto out_unlock;
5581         }
5582         /* if we just finished scan ask for delay */
5583         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
5584                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
5585                 rc = -EAGAIN;
5586                 goto out_unlock;
5587         }
5588         if (len) {
5589                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
5590                                iwl4965_escape_essid(ssid, len), (int)len);
5591
5592                 priv->one_direct_scan = 1;
5593                 priv->direct_ssid_len = (u8)
5594                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
5595                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
5596         } else
5597                 priv->one_direct_scan = 0;
5598
5599         rc = iwl4965_scan_initiate(priv);
5600
5601         IWL_DEBUG_MAC80211("leave\n");
5602
5603 out_unlock:
5604         spin_unlock_irqrestore(&priv->lock, flags);
5605         mutex_unlock(&priv->mutex);
5606
5607         return rc;
5608 }
5609
5610 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
5611                         struct ieee80211_key_conf *keyconf, const u8 *addr,
5612                         u32 iv32, u16 *phase1key)
5613 {
5614         struct iwl_priv *priv = hw->priv;
5615         u8 sta_id = IWL_INVALID_STATION;
5616         unsigned long flags;
5617         __le16 key_flags = 0;
5618         int i;
5619         DECLARE_MAC_BUF(mac);
5620
5621         IWL_DEBUG_MAC80211("enter\n");
5622
5623         sta_id = iwl_find_station(priv, addr);
5624         if (sta_id == IWL_INVALID_STATION) {
5625                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5626                                    print_mac(mac, addr));
5627                 return;
5628         }
5629
5630         iwl4965_scan_cancel_timeout(priv, 100);
5631
5632         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
5633         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
5634         key_flags &= ~STA_KEY_FLG_INVALID;
5635
5636         if (sta_id == priv->hw_params.bcast_sta_id)
5637                 key_flags |= STA_KEY_MULTICAST_MSK;
5638
5639         spin_lock_irqsave(&priv->sta_lock, flags);
5640
5641         priv->stations[sta_id].sta.key.key_flags = key_flags;
5642         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
5643
5644         for (i = 0; i < 5; i++)
5645                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
5646                         cpu_to_le16(phase1key[i]);
5647
5648         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
5649         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
5650
5651         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
5652
5653         spin_unlock_irqrestore(&priv->sta_lock, flags);
5654
5655         IWL_DEBUG_MAC80211("leave\n");
5656 }
5657
5658 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
5659                            const u8 *local_addr, const u8 *addr,
5660                            struct ieee80211_key_conf *key)
5661 {
5662         struct iwl_priv *priv = hw->priv;
5663         DECLARE_MAC_BUF(mac);
5664         int ret = 0;
5665         u8 sta_id = IWL_INVALID_STATION;
5666         u8 is_default_wep_key = 0;
5667
5668         IWL_DEBUG_MAC80211("enter\n");
5669
5670         if (priv->hw_params.sw_crypto) {
5671                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
5672                 return -EOPNOTSUPP;
5673         }
5674
5675         if (is_zero_ether_addr(addr))
5676                 /* only support pairwise keys */
5677                 return -EOPNOTSUPP;
5678
5679         sta_id = iwl_find_station(priv, addr);
5680         if (sta_id == IWL_INVALID_STATION) {
5681                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5682                                    print_mac(mac, addr));
5683                 return -EINVAL;
5684
5685         }
5686
5687         mutex_lock(&priv->mutex);
5688         iwl4965_scan_cancel_timeout(priv, 100);
5689         mutex_unlock(&priv->mutex);
5690
5691         /* If we are getting WEP group key and we didn't receive any key mapping
5692          * so far, we are in legacy wep mode (group key only), otherwise we are
5693          * in 1X mode.
5694          * In legacy wep mode, we use another host command to the uCode */
5695         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
5696                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5697                 if (cmd == SET_KEY)
5698                         is_default_wep_key = !priv->key_mapping_key;
5699                 else
5700                         is_default_wep_key = priv->default_wep_key;
5701         }
5702
5703         switch (cmd) {
5704         case SET_KEY:
5705                 if (is_default_wep_key)
5706                         ret = iwl_set_default_wep_key(priv, key);
5707                 else
5708                         ret = iwl_set_dynamic_key(priv, key, sta_id);
5709
5710                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
5711                 break;
5712         case DISABLE_KEY:
5713                 if (is_default_wep_key)
5714                         ret = iwl_remove_default_wep_key(priv, key);
5715                 else
5716                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
5717
5718                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
5719                 break;
5720         default:
5721                 ret = -EINVAL;
5722         }
5723
5724         IWL_DEBUG_MAC80211("leave\n");
5725
5726         return ret;
5727 }
5728
5729 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
5730                            const struct ieee80211_tx_queue_params *params)
5731 {
5732         struct iwl_priv *priv = hw->priv;
5733         unsigned long flags;
5734         int q;
5735
5736         IWL_DEBUG_MAC80211("enter\n");
5737
5738         if (!iwl_is_ready_rf(priv)) {
5739                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5740                 return -EIO;
5741         }
5742
5743         if (queue >= AC_NUM) {
5744                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
5745                 return 0;
5746         }
5747
5748         if (!priv->qos_data.qos_enable) {
5749                 priv->qos_data.qos_active = 0;
5750                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
5751                 return 0;
5752         }
5753         q = AC_NUM - 1 - queue;
5754
5755         spin_lock_irqsave(&priv->lock, flags);
5756
5757         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5758         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5759         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5760         priv->qos_data.def_qos_parm.ac[q].edca_txop =
5761                         cpu_to_le16((params->txop * 32));
5762
5763         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5764         priv->qos_data.qos_active = 1;
5765
5766         spin_unlock_irqrestore(&priv->lock, flags);
5767
5768         mutex_lock(&priv->mutex);
5769         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5770                 iwl4965_activate_qos(priv, 1);
5771         else if (priv->assoc_id && iwl_is_associated(priv))
5772                 iwl4965_activate_qos(priv, 0);
5773
5774         mutex_unlock(&priv->mutex);
5775
5776         IWL_DEBUG_MAC80211("leave\n");
5777         return 0;
5778 }
5779
5780 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
5781                                 struct ieee80211_tx_queue_stats *stats)
5782 {
5783         struct iwl_priv *priv = hw->priv;
5784         int i, avail;
5785         struct iwl_tx_queue *txq;
5786         struct iwl4965_queue *q;
5787         unsigned long flags;
5788
5789         IWL_DEBUG_MAC80211("enter\n");
5790
5791         if (!iwl_is_ready_rf(priv)) {
5792                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5793                 return -EIO;
5794         }
5795
5796         spin_lock_irqsave(&priv->lock, flags);
5797
5798         for (i = 0; i < AC_NUM; i++) {
5799                 txq = &priv->txq[i];
5800                 q = &txq->q;
5801                 avail = iwl4965_queue_space(q);
5802
5803                 stats[i].len = q->n_window - avail;
5804                 stats[i].limit = q->n_window - q->high_mark;
5805                 stats[i].count = q->n_window;
5806
5807         }
5808         spin_unlock_irqrestore(&priv->lock, flags);
5809
5810         IWL_DEBUG_MAC80211("leave\n");
5811
5812         return 0;
5813 }
5814
5815 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
5816                              struct ieee80211_low_level_stats *stats)
5817 {
5818         struct iwl_priv *priv = hw->priv;
5819
5820         priv = hw->priv;
5821         IWL_DEBUG_MAC80211("enter\n");
5822         IWL_DEBUG_MAC80211("leave\n");
5823
5824         return 0;
5825 }
5826
5827 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
5828 {
5829         struct iwl_priv *priv;
5830
5831         priv = hw->priv;
5832         IWL_DEBUG_MAC80211("enter\n");
5833         IWL_DEBUG_MAC80211("leave\n");
5834
5835         return 0;
5836 }
5837
5838 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
5839 {
5840         struct iwl_priv *priv = hw->priv;
5841         unsigned long flags;
5842
5843         mutex_lock(&priv->mutex);
5844         IWL_DEBUG_MAC80211("enter\n");
5845
5846         priv->lq_mngr.lq_ready = 0;
5847 #ifdef CONFIG_IWL4965_HT
5848         spin_lock_irqsave(&priv->lock, flags);
5849         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
5850         spin_unlock_irqrestore(&priv->lock, flags);
5851 #endif /* CONFIG_IWL4965_HT */
5852
5853         iwl_reset_qos(priv);
5854
5855         cancel_delayed_work(&priv->post_associate);
5856
5857         spin_lock_irqsave(&priv->lock, flags);
5858         priv->assoc_id = 0;
5859         priv->assoc_capability = 0;
5860         priv->assoc_station_added = 0;
5861
5862         /* new association get rid of ibss beacon skb */
5863         if (priv->ibss_beacon)
5864                 dev_kfree_skb(priv->ibss_beacon);
5865
5866         priv->ibss_beacon = NULL;
5867
5868         priv->beacon_int = priv->hw->conf.beacon_int;
5869         priv->timestamp = 0;
5870         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
5871                 priv->beacon_int = 0;
5872
5873         spin_unlock_irqrestore(&priv->lock, flags);
5874
5875         if (!iwl_is_ready_rf(priv)) {
5876                 IWL_DEBUG_MAC80211("leave - not ready\n");
5877                 mutex_unlock(&priv->mutex);
5878                 return;
5879         }
5880
5881         /* we are restarting association process
5882          * clear RXON_FILTER_ASSOC_MSK bit
5883          */
5884         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5885                 iwl4965_scan_cancel_timeout(priv, 100);
5886                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5887                 iwl4965_commit_rxon(priv);
5888         }
5889
5890         iwl_power_update_mode(priv, 0);
5891
5892         /* Per mac80211.h: This is only used in IBSS mode... */
5893         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5894
5895                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5896                 mutex_unlock(&priv->mutex);
5897                 return;
5898         }
5899
5900         iwl4965_set_rate(priv);
5901
5902         mutex_unlock(&priv->mutex);
5903
5904         IWL_DEBUG_MAC80211("leave\n");
5905 }
5906
5907 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
5908                                  struct ieee80211_tx_control *control)
5909 {
5910         struct iwl_priv *priv = hw->priv;
5911         unsigned long flags;
5912
5913         mutex_lock(&priv->mutex);
5914         IWL_DEBUG_MAC80211("enter\n");
5915
5916         if (!iwl_is_ready_rf(priv)) {
5917                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5918                 mutex_unlock(&priv->mutex);
5919                 return -EIO;
5920         }
5921
5922         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5923                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5924                 mutex_unlock(&priv->mutex);
5925                 return -EIO;
5926         }
5927
5928         spin_lock_irqsave(&priv->lock, flags);
5929
5930         if (priv->ibss_beacon)
5931                 dev_kfree_skb(priv->ibss_beacon);
5932
5933         priv->ibss_beacon = skb;
5934
5935         priv->assoc_id = 0;
5936
5937         IWL_DEBUG_MAC80211("leave\n");
5938         spin_unlock_irqrestore(&priv->lock, flags);
5939
5940         iwl_reset_qos(priv);
5941
5942         queue_work(priv->workqueue, &priv->post_associate.work);
5943
5944         mutex_unlock(&priv->mutex);
5945
5946         return 0;
5947 }
5948
5949 /*****************************************************************************
5950  *
5951  * sysfs attributes
5952  *
5953  *****************************************************************************/
5954
5955 #ifdef CONFIG_IWLWIFI_DEBUG
5956
5957 /*
5958  * The following adds a new attribute to the sysfs representation
5959  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5960  * used for controlling the debug level.
5961  *
5962  * See the level definitions in iwl for details.
5963  */
5964
5965 static ssize_t show_debug_level(struct device *d,
5966                                 struct device_attribute *attr, char *buf)
5967 {
5968         struct iwl_priv *priv = d->driver_data;
5969
5970         return sprintf(buf, "0x%08X\n", priv->debug_level);
5971 }
5972 static ssize_t store_debug_level(struct device *d,
5973                                 struct device_attribute *attr,
5974                                  const char *buf, size_t count)
5975 {
5976         struct iwl_priv *priv = d->driver_data;
5977         char *p = (char *)buf;
5978         u32 val;
5979
5980         val = simple_strtoul(p, &p, 0);
5981         if (p == buf)
5982                 printk(KERN_INFO DRV_NAME
5983                        ": %s is not in hex or decimal form.\n", buf);
5984         else
5985                 priv->debug_level = val;
5986
5987         return strnlen(buf, count);
5988 }
5989
5990 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5991                         show_debug_level, store_debug_level);
5992
5993
5994 #endif /* CONFIG_IWLWIFI_DEBUG */
5995
5996
5997 static ssize_t show_version(struct device *d,
5998                                 struct device_attribute *attr, char *buf)
5999 {
6000         struct iwl_priv *priv = d->driver_data;
6001         struct iwl4965_alive_resp *palive = &priv->card_alive;
6002
6003         if (palive->is_valid)
6004                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
6005                                     "fw type: 0x%01X 0x%01X\n",
6006                                 palive->ucode_major, palive->ucode_minor,
6007                                 palive->sw_rev[0], palive->sw_rev[1],
6008                                 palive->ver_type, palive->ver_subtype);
6009
6010         else
6011                 return sprintf(buf, "fw not loaded\n");
6012 }
6013
6014 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
6015
6016 static ssize_t show_temperature(struct device *d,
6017                                 struct device_attribute *attr, char *buf)
6018 {
6019         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6020
6021         if (!iwl_is_alive(priv))
6022                 return -EAGAIN;
6023
6024         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
6025 }
6026
6027 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6028
6029 static ssize_t show_rs_window(struct device *d,
6030                               struct device_attribute *attr,
6031                               char *buf)
6032 {
6033         struct iwl_priv *priv = d->driver_data;
6034         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
6035 }
6036 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
6037
6038 static ssize_t show_tx_power(struct device *d,
6039                              struct device_attribute *attr, char *buf)
6040 {
6041         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6042         return sprintf(buf, "%d\n", priv->user_txpower_limit);
6043 }
6044
6045 static ssize_t store_tx_power(struct device *d,
6046                               struct device_attribute *attr,
6047                               const char *buf, size_t count)
6048 {
6049         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6050         char *p = (char *)buf;
6051         u32 val;
6052
6053         val = simple_strtoul(p, &p, 10);
6054         if (p == buf)
6055                 printk(KERN_INFO DRV_NAME
6056                        ": %s is not in decimal form.\n", buf);
6057         else
6058                 iwl4965_hw_reg_set_txpower(priv, val);
6059
6060         return count;
6061 }
6062
6063 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6064
6065 static ssize_t show_flags(struct device *d,
6066                           struct device_attribute *attr, char *buf)
6067 {
6068         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6069
6070         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
6071 }
6072
6073 static ssize_t store_flags(struct device *d,
6074                            struct device_attribute *attr,
6075                            const char *buf, size_t count)
6076 {
6077         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6078         u32 flags = simple_strtoul(buf, NULL, 0);
6079
6080         mutex_lock(&priv->mutex);
6081         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
6082                 /* Cancel any currently running scans... */
6083                 if (iwl4965_scan_cancel_timeout(priv, 100))
6084                         IWL_WARNING("Could not cancel scan.\n");
6085                 else {
6086                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6087                                        flags);
6088                         priv->staging_rxon.flags = cpu_to_le32(flags);
6089                         iwl4965_commit_rxon(priv);
6090                 }
6091         }
6092         mutex_unlock(&priv->mutex);
6093
6094         return count;
6095 }
6096
6097 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
6098
6099 static ssize_t show_filter_flags(struct device *d,
6100                                  struct device_attribute *attr, char *buf)
6101 {
6102         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6103
6104         return sprintf(buf, "0x%04X\n",
6105                 le32_to_cpu(priv->active_rxon.filter_flags));
6106 }
6107
6108 static ssize_t store_filter_flags(struct device *d,
6109                                   struct device_attribute *attr,
6110                                   const char *buf, size_t count)
6111 {
6112         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6113         u32 filter_flags = simple_strtoul(buf, NULL, 0);
6114
6115         mutex_lock(&priv->mutex);
6116         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
6117                 /* Cancel any currently running scans... */
6118                 if (iwl4965_scan_cancel_timeout(priv, 100))
6119                         IWL_WARNING("Could not cancel scan.\n");
6120                 else {
6121                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
6122                                        "0x%04X\n", filter_flags);
6123                         priv->staging_rxon.filter_flags =
6124                                 cpu_to_le32(filter_flags);
6125                         iwl4965_commit_rxon(priv);
6126                 }
6127         }
6128         mutex_unlock(&priv->mutex);
6129
6130         return count;
6131 }
6132
6133 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
6134                    store_filter_flags);
6135
6136 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6137
6138 static ssize_t show_measurement(struct device *d,
6139                                 struct device_attribute *attr, char *buf)
6140 {
6141         struct iwl_priv *priv = dev_get_drvdata(d);
6142         struct iwl4965_spectrum_notification measure_report;
6143         u32 size = sizeof(measure_report), len = 0, ofs = 0;
6144         u8 *data = (u8 *) & measure_report;
6145         unsigned long flags;
6146
6147         spin_lock_irqsave(&priv->lock, flags);
6148         if (!(priv->measurement_status & MEASUREMENT_READY)) {
6149                 spin_unlock_irqrestore(&priv->lock, flags);
6150                 return 0;
6151         }
6152         memcpy(&measure_report, &priv->measure_report, size);
6153         priv->measurement_status = 0;
6154         spin_unlock_irqrestore(&priv->lock, flags);
6155
6156         while (size && (PAGE_SIZE - len)) {
6157                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6158                                    PAGE_SIZE - len, 1);
6159                 len = strlen(buf);
6160                 if (PAGE_SIZE - len)
6161                         buf[len++] = '\n';
6162
6163                 ofs += 16;
6164                 size -= min(size, 16U);
6165         }
6166
6167         return len;
6168 }
6169
6170 static ssize_t store_measurement(struct device *d,
6171                                  struct device_attribute *attr,
6172                                  const char *buf, size_t count)
6173 {
6174         struct iwl_priv *priv = dev_get_drvdata(d);
6175         struct ieee80211_measurement_params params = {
6176                 .channel = le16_to_cpu(priv->active_rxon.channel),
6177                 .start_time = cpu_to_le64(priv->last_tsf),
6178                 .duration = cpu_to_le16(1),
6179         };
6180         u8 type = IWL_MEASURE_BASIC;
6181         u8 buffer[32];
6182         u8 channel;
6183
6184         if (count) {
6185                 char *p = buffer;
6186                 strncpy(buffer, buf, min(sizeof(buffer), count));
6187                 channel = simple_strtoul(p, NULL, 0);
6188                 if (channel)
6189                         params.channel = channel;
6190
6191                 p = buffer;
6192                 while (*p && *p != ' ')
6193                         p++;
6194                 if (*p)
6195                         type = simple_strtoul(p + 1, NULL, 0);
6196         }
6197
6198         IWL_DEBUG_INFO("Invoking measurement of type %d on "
6199                        "channel %d (for '%s')\n", type, params.channel, buf);
6200         iwl4965_get_measurement(priv, &params, type);
6201
6202         return count;
6203 }
6204
6205 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
6206                    show_measurement, store_measurement);
6207 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
6208
6209 static ssize_t store_retry_rate(struct device *d,
6210                                 struct device_attribute *attr,
6211                                 const char *buf, size_t count)
6212 {
6213         struct iwl_priv *priv = dev_get_drvdata(d);
6214
6215         priv->retry_rate = simple_strtoul(buf, NULL, 0);
6216         if (priv->retry_rate <= 0)
6217                 priv->retry_rate = 1;
6218
6219         return count;
6220 }
6221
6222 static ssize_t show_retry_rate(struct device *d,
6223                                struct device_attribute *attr, char *buf)
6224 {
6225         struct iwl_priv *priv = dev_get_drvdata(d);
6226         return sprintf(buf, "%d", priv->retry_rate);
6227 }
6228
6229 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
6230                    store_retry_rate);
6231
6232 static ssize_t store_power_level(struct device *d,
6233                                  struct device_attribute *attr,
6234                                  const char *buf, size_t count)
6235 {
6236         struct iwl_priv *priv = dev_get_drvdata(d);
6237         int rc;
6238         int mode;
6239
6240         mode = simple_strtoul(buf, NULL, 0);
6241         mutex_lock(&priv->mutex);
6242
6243         if (!iwl_is_ready(priv)) {
6244                 rc = -EAGAIN;
6245                 goto out;
6246         }
6247
6248         rc = iwl_power_set_user_mode(priv, mode);
6249         if (rc) {
6250                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
6251                 goto out;
6252         }
6253         rc = count;
6254
6255  out:
6256         mutex_unlock(&priv->mutex);
6257         return rc;
6258 }
6259
6260 #define MAX_WX_STRING 80
6261
6262 /* Values are in microsecond */
6263 static const s32 timeout_duration[] = {
6264         350000,
6265         250000,
6266         75000,
6267         37000,
6268         25000,
6269 };
6270 static const s32 period_duration[] = {
6271         400000,
6272         700000,
6273         1000000,
6274         1000000,
6275         1000000
6276 };
6277
6278 static ssize_t show_power_level(struct device *d,
6279                                 struct device_attribute *attr, char *buf)
6280 {
6281         struct iwl_priv *priv = dev_get_drvdata(d);
6282         int level = priv->power_data.power_mode;
6283         char *p = buf;
6284
6285         p += sprintf(p, "%d ", level);
6286         switch (level) {
6287         case IWL_POWER_MODE_CAM:
6288         case IWL_POWER_AC:
6289                 p += sprintf(p, "(AC)");
6290                 break;
6291         case IWL_POWER_BATTERY:
6292                 p += sprintf(p, "(BATTERY)");
6293                 break;
6294         default:
6295                 p += sprintf(p,
6296                              "(Timeout %dms, Period %dms)",
6297                              timeout_duration[level - 1] / 1000,
6298                              period_duration[level - 1] / 1000);
6299         }
6300 /*
6301         if (!(priv->power_mode & IWL_POWER_ENABLED))
6302                 p += sprintf(p, " OFF\n");
6303         else
6304                 p += sprintf(p, " \n");
6305 */
6306         p += sprintf(p, " \n");
6307         return (p - buf + 1);
6308 }
6309
6310 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
6311                    store_power_level);
6312
6313 static ssize_t show_channels(struct device *d,
6314                              struct device_attribute *attr, char *buf)
6315 {
6316         /* all this shit doesn't belong into sysfs anyway */
6317         return 0;
6318 }
6319
6320 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
6321
6322 static ssize_t show_statistics(struct device *d,
6323                                struct device_attribute *attr, char *buf)
6324 {
6325         struct iwl_priv *priv = dev_get_drvdata(d);
6326         u32 size = sizeof(struct iwl4965_notif_statistics);
6327         u32 len = 0, ofs = 0;
6328         u8 *data = (u8 *) & priv->statistics;
6329         int rc = 0;
6330
6331         if (!iwl_is_alive(priv))
6332                 return -EAGAIN;
6333
6334         mutex_lock(&priv->mutex);
6335         rc = iwl_send_statistics_request(priv, 0);
6336         mutex_unlock(&priv->mutex);
6337
6338         if (rc) {
6339                 len = sprintf(buf,
6340                               "Error sending statistics request: 0x%08X\n", rc);
6341                 return len;
6342         }
6343
6344         while (size && (PAGE_SIZE - len)) {
6345                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6346                                    PAGE_SIZE - len, 1);
6347                 len = strlen(buf);
6348                 if (PAGE_SIZE - len)
6349                         buf[len++] = '\n';
6350
6351                 ofs += 16;
6352                 size -= min(size, 16U);
6353         }
6354
6355         return len;
6356 }
6357
6358 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
6359
6360 static ssize_t show_status(struct device *d,
6361                            struct device_attribute *attr, char *buf)
6362 {
6363         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6364         if (!iwl_is_alive(priv))
6365                 return -EAGAIN;
6366         return sprintf(buf, "0x%08x\n", (int)priv->status);
6367 }
6368
6369 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
6370
6371 static ssize_t dump_error_log(struct device *d,
6372                               struct device_attribute *attr,
6373                               const char *buf, size_t count)
6374 {
6375         char *p = (char *)buf;
6376
6377         if (p[0] == '1')
6378                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
6379
6380         return strnlen(buf, count);
6381 }
6382
6383 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
6384
6385 static ssize_t dump_event_log(struct device *d,
6386                               struct device_attribute *attr,
6387                               const char *buf, size_t count)
6388 {
6389         char *p = (char *)buf;
6390
6391         if (p[0] == '1')
6392                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
6393
6394         return strnlen(buf, count);
6395 }
6396
6397 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6398
6399 /*****************************************************************************
6400  *
6401  * driver setup and teardown
6402  *
6403  *****************************************************************************/
6404
6405 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
6406 {
6407         priv->workqueue = create_workqueue(DRV_NAME);
6408
6409         init_waitqueue_head(&priv->wait_command_queue);
6410
6411         INIT_WORK(&priv->up, iwl4965_bg_up);
6412         INIT_WORK(&priv->restart, iwl4965_bg_restart);
6413         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
6414         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
6415         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
6416         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
6417         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
6418         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
6419         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
6420         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
6421         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
6422         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
6423         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
6424
6425         iwl4965_hw_setup_deferred_work(priv);
6426
6427         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6428                      iwl4965_irq_tasklet, (unsigned long)priv);
6429 }
6430
6431 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
6432 {
6433         iwl4965_hw_cancel_deferred_work(priv);
6434
6435         cancel_delayed_work_sync(&priv->init_alive_start);
6436         cancel_delayed_work(&priv->scan_check);
6437         cancel_delayed_work(&priv->alive_start);
6438         cancel_delayed_work(&priv->post_associate);
6439         cancel_work_sync(&priv->beacon_update);
6440 }
6441
6442 static struct attribute *iwl4965_sysfs_entries[] = {
6443         &dev_attr_channels.attr,
6444         &dev_attr_dump_errors.attr,
6445         &dev_attr_dump_events.attr,
6446         &dev_attr_flags.attr,
6447         &dev_attr_filter_flags.attr,
6448 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6449         &dev_attr_measurement.attr,
6450 #endif
6451         &dev_attr_power_level.attr,
6452         &dev_attr_retry_rate.attr,
6453         &dev_attr_rs_window.attr,
6454         &dev_attr_statistics.attr,
6455         &dev_attr_status.attr,
6456         &dev_attr_temperature.attr,
6457         &dev_attr_tx_power.attr,
6458 #ifdef CONFIG_IWLWIFI_DEBUG
6459         &dev_attr_debug_level.attr,
6460 #endif
6461         &dev_attr_version.attr,
6462
6463         NULL
6464 };
6465
6466 static struct attribute_group iwl4965_attribute_group = {
6467         .name = NULL,           /* put in device directory */
6468         .attrs = iwl4965_sysfs_entries,
6469 };
6470
6471 static struct ieee80211_ops iwl4965_hw_ops = {
6472         .tx = iwl4965_mac_tx,
6473         .start = iwl4965_mac_start,
6474         .stop = iwl4965_mac_stop,
6475         .add_interface = iwl4965_mac_add_interface,
6476         .remove_interface = iwl4965_mac_remove_interface,
6477         .config = iwl4965_mac_config,
6478         .config_interface = iwl4965_mac_config_interface,
6479         .configure_filter = iwl4965_configure_filter,
6480         .set_key = iwl4965_mac_set_key,
6481         .update_tkip_key = iwl4965_mac_update_tkip_key,
6482         .get_stats = iwl4965_mac_get_stats,
6483         .get_tx_stats = iwl4965_mac_get_tx_stats,
6484         .conf_tx = iwl4965_mac_conf_tx,
6485         .get_tsf = iwl4965_mac_get_tsf,
6486         .reset_tsf = iwl4965_mac_reset_tsf,
6487         .beacon_update = iwl4965_mac_beacon_update,
6488         .bss_info_changed = iwl4965_bss_info_changed,
6489 #ifdef CONFIG_IWL4965_HT
6490         .ampdu_action = iwl4965_mac_ampdu_action,
6491 #endif  /* CONFIG_IWL4965_HT */
6492         .hw_scan = iwl4965_mac_hw_scan
6493 };
6494
6495 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
6496 {
6497         int err = 0;
6498         struct iwl_priv *priv;
6499         struct ieee80211_hw *hw;
6500         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
6501         unsigned long flags;
6502         DECLARE_MAC_BUF(mac);
6503
6504         /************************
6505          * 1. Allocating HW data
6506          ************************/
6507
6508         /* Disabling hardware scan means that mac80211 will perform scans
6509          * "the hard way", rather than using device's scan. */
6510         if (cfg->mod_params->disable_hw_scan) {
6511                 if (cfg->mod_params->debug & IWL_DL_INFO)
6512                         dev_printk(KERN_DEBUG, &(pdev->dev),
6513                                    "Disabling hw_scan\n");
6514                 iwl4965_hw_ops.hw_scan = NULL;
6515         }
6516
6517         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
6518         if (!hw) {
6519                 err = -ENOMEM;
6520                 goto out;
6521         }
6522         priv = hw->priv;
6523         /* At this point both hw and priv are allocated. */
6524
6525         SET_IEEE80211_DEV(hw, &pdev->dev);
6526
6527         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
6528         priv->cfg = cfg;
6529         priv->pci_dev = pdev;
6530
6531 #ifdef CONFIG_IWLWIFI_DEBUG
6532         priv->debug_level = priv->cfg->mod_params->debug;
6533         atomic_set(&priv->restrict_refcnt, 0);
6534 #endif
6535
6536         /**************************
6537          * 2. Initializing PCI bus
6538          **************************/
6539         if (pci_enable_device(pdev)) {
6540                 err = -ENODEV;
6541                 goto out_ieee80211_free_hw;
6542         }
6543
6544         pci_set_master(pdev);
6545
6546         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
6547         if (!err)
6548                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
6549         if (err) {
6550                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6551                 if (!err)
6552                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
6553                 /* both attempts failed: */
6554                 if (err) {
6555                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
6556                                 DRV_NAME);
6557                         goto out_pci_disable_device;
6558                 }
6559         }
6560
6561         err = pci_request_regions(pdev, DRV_NAME);
6562         if (err)
6563                 goto out_pci_disable_device;
6564
6565         pci_set_drvdata(pdev, priv);
6566
6567         /* We disable the RETRY_TIMEOUT register (0x41) to keep
6568          * PCI Tx retries from interfering with C3 CPU state */
6569         pci_write_config_byte(pdev, 0x41, 0x00);
6570
6571         /***********************
6572          * 3. Read REV register
6573          ***********************/
6574         priv->hw_base = pci_iomap(pdev, 0, 0);
6575         if (!priv->hw_base) {
6576                 err = -ENODEV;
6577                 goto out_pci_release_regions;
6578         }
6579
6580         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
6581                 (unsigned long long) pci_resource_len(pdev, 0));
6582         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
6583
6584         iwl_hw_detect(priv);
6585         printk(KERN_INFO DRV_NAME
6586                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
6587                 priv->cfg->name, priv->hw_rev);
6588
6589         /* amp init */
6590         err = priv->cfg->ops->lib->apm_ops.init(priv);
6591         if (err < 0) {
6592                 IWL_DEBUG_INFO("Failed to init APMG\n");
6593                 goto out_iounmap;
6594         }
6595         /*****************
6596          * 4. Read EEPROM
6597          *****************/
6598         /* Read the EEPROM */
6599         err = iwl_eeprom_init(priv);
6600         if (err) {
6601                 IWL_ERROR("Unable to init EEPROM\n");
6602                 goto out_iounmap;
6603         }
6604         err = iwl_eeprom_check_version(priv);
6605         if (err)
6606                 goto out_iounmap;
6607
6608         /* extract MAC Address */
6609         iwl_eeprom_get_mac(priv, priv->mac_addr);
6610         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
6611         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6612
6613         /************************
6614          * 5. Setup HW constants
6615          ************************/
6616         /* Device-specific setup */
6617         if (priv->cfg->ops->lib->set_hw_params(priv)) {
6618                 IWL_ERROR("failed to set hw parameters\n");
6619                 goto out_free_eeprom;
6620         }
6621
6622         /*******************
6623          * 6. Setup hw/priv
6624          *******************/
6625
6626         err = iwl_setup(priv);
6627         if (err)
6628                 goto out_free_eeprom;
6629         /* At this point both hw and priv are initialized. */
6630
6631         /**********************************
6632          * 7. Initialize module parameters
6633          **********************************/
6634
6635         /* Disable radio (SW RF KILL) via parameter when loading driver */
6636         if (priv->cfg->mod_params->disable) {
6637                 set_bit(STATUS_RF_KILL_SW, &priv->status);
6638                 IWL_DEBUG_INFO("Radio disabled.\n");
6639         }
6640
6641         if (priv->cfg->mod_params->enable_qos)
6642                 priv->qos_data.qos_enable = 1;
6643
6644         /********************
6645          * 8. Setup services
6646          ********************/
6647         spin_lock_irqsave(&priv->lock, flags);
6648         iwl4965_disable_interrupts(priv);
6649         spin_unlock_irqrestore(&priv->lock, flags);
6650
6651         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6652         if (err) {
6653                 IWL_ERROR("failed to create sysfs device attributes\n");
6654                 goto out_free_eeprom;
6655         }
6656
6657         err = iwl_dbgfs_register(priv, DRV_NAME);
6658         if (err) {
6659                 IWL_ERROR("failed to create debugfs files\n");
6660                 goto out_remove_sysfs;
6661         }
6662
6663         iwl4965_setup_deferred_work(priv);
6664         iwl4965_setup_rx_handlers(priv);
6665
6666         /********************
6667          * 9. Conclude
6668          ********************/
6669         pci_save_state(pdev);
6670         pci_disable_device(pdev);
6671
6672         /* notify iwlcore to init */
6673         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
6674         return 0;
6675
6676  out_remove_sysfs:
6677         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6678  out_free_eeprom:
6679         iwl_eeprom_free(priv);
6680  out_iounmap:
6681         pci_iounmap(pdev, priv->hw_base);
6682  out_pci_release_regions:
6683         pci_release_regions(pdev);
6684         pci_set_drvdata(pdev, NULL);
6685  out_pci_disable_device:
6686         pci_disable_device(pdev);
6687  out_ieee80211_free_hw:
6688         ieee80211_free_hw(priv->hw);
6689  out:
6690         return err;
6691 }
6692
6693 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
6694 {
6695         struct iwl_priv *priv = pci_get_drvdata(pdev);
6696         struct list_head *p, *q;
6697         int i;
6698         unsigned long flags;
6699
6700         if (!priv)
6701                 return;
6702
6703         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
6704
6705         if (priv->mac80211_registered) {
6706                 ieee80211_unregister_hw(priv->hw);
6707                 priv->mac80211_registered = 0;
6708         }
6709
6710         set_bit(STATUS_EXIT_PENDING, &priv->status);
6711
6712         iwl4965_down(priv);
6713
6714         /* make sure we flush any pending irq or
6715          * tasklet for the driver
6716          */
6717         spin_lock_irqsave(&priv->lock, flags);
6718         iwl4965_disable_interrupts(priv);
6719         spin_unlock_irqrestore(&priv->lock, flags);
6720
6721         iwl_synchronize_irq(priv);
6722
6723         /* Free MAC hash list for ADHOC */
6724         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
6725                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
6726                         list_del(p);
6727                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
6728                 }
6729         }
6730
6731         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
6732         iwl_dbgfs_unregister(priv);
6733         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6734
6735         iwl4965_dealloc_ucode_pci(priv);
6736
6737         if (priv->rxq.bd)
6738                 iwl_rx_queue_free(priv, &priv->rxq);
6739         iwl_hw_txq_ctx_free(priv);
6740
6741         iwlcore_clear_stations_table(priv);
6742         iwl_eeprom_free(priv);
6743
6744
6745         /*netif_stop_queue(dev); */
6746         flush_workqueue(priv->workqueue);
6747
6748         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
6749          * priv->workqueue... so we can't take down the workqueue
6750          * until now... */
6751         destroy_workqueue(priv->workqueue);
6752         priv->workqueue = NULL;
6753
6754         pci_iounmap(pdev, priv->hw_base);
6755         pci_release_regions(pdev);
6756         pci_disable_device(pdev);
6757         pci_set_drvdata(pdev, NULL);
6758
6759         iwl_free_channel_map(priv);
6760         iwlcore_free_geos(priv);
6761
6762         if (priv->ibss_beacon)
6763                 dev_kfree_skb(priv->ibss_beacon);
6764
6765         ieee80211_free_hw(priv->hw);
6766 }
6767
6768 #ifdef CONFIG_PM
6769
6770 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
6771 {
6772         struct iwl_priv *priv = pci_get_drvdata(pdev);
6773
6774         if (priv->is_open) {
6775                 set_bit(STATUS_IN_SUSPEND, &priv->status);
6776                 iwl4965_mac_stop(priv->hw);
6777                 priv->is_open = 1;
6778         }
6779
6780         pci_set_power_state(pdev, PCI_D3hot);
6781
6782         return 0;
6783 }
6784
6785 static int iwl4965_pci_resume(struct pci_dev *pdev)
6786 {
6787         struct iwl_priv *priv = pci_get_drvdata(pdev);
6788
6789         pci_set_power_state(pdev, PCI_D0);
6790
6791         if (priv->is_open)
6792                 iwl4965_mac_start(priv->hw);
6793
6794         clear_bit(STATUS_IN_SUSPEND, &priv->status);
6795         return 0;
6796 }
6797
6798 #endif /* CONFIG_PM */
6799
6800 /*****************************************************************************
6801  *
6802  * driver and module entry point
6803  *
6804  *****************************************************************************/
6805
6806 /* Hardware specific file defines the PCI IDs table for that hardware module */
6807 static struct pci_device_id iwl_hw_card_ids[] = {
6808         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
6809         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
6810 #ifdef CONFIG_IWL5000
6811         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
6812         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
6813         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
6814 #endif /* CONFIG_IWL5000 */
6815         {0}
6816 };
6817 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
6818
6819 static struct pci_driver iwl_driver = {
6820         .name = DRV_NAME,
6821         .id_table = iwl_hw_card_ids,
6822         .probe = iwl4965_pci_probe,
6823         .remove = __devexit_p(iwl4965_pci_remove),
6824 #ifdef CONFIG_PM
6825         .suspend = iwl4965_pci_suspend,
6826         .resume = iwl4965_pci_resume,
6827 #endif
6828 };
6829
6830 static int __init iwl4965_init(void)
6831 {
6832
6833         int ret;
6834         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6835         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
6836
6837         ret = iwl4965_rate_control_register();
6838         if (ret) {
6839                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
6840                 return ret;
6841         }
6842
6843         ret = pci_register_driver(&iwl_driver);
6844         if (ret) {
6845                 IWL_ERROR("Unable to initialize PCI module\n");
6846                 goto error_register;
6847         }
6848
6849         return ret;
6850
6851 error_register:
6852         iwl4965_rate_control_unregister();
6853         return ret;
6854 }
6855
6856 static void __exit iwl4965_exit(void)
6857 {
6858         pci_unregister_driver(&iwl_driver);
6859         iwl4965_rate_control_unregister();
6860 }
6861
6862 module_exit(iwl4965_exit);
6863 module_init(iwl4965_init);