err.no Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-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
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  90 static const struct ieee80211_supported_band *iwl_get_hw_mode(
  91                 struct iwl_priv *priv, enum ieee80211_band band)
  92 {
  93         return priv->hw->wiphy->bands[band];
  94 }
  95
  96 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
  97 {
  98         /* Single white space is for Linksys APs */
  99         if (essid_len == 1 && essid[0] == ' ')
 100                 return 1;
 101
 102         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 103         while (essid_len) {
 104                 essid_len--;
 105                 if (essid[essid_len] != '\0')
 106                         return 0;
 107         }
 108
 109         return 1;
 110 }
 111
 112 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 113 {
 114         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 115         const char *s = essid;
 116         char *d = escaped;
 117
 118         if (iwl4965_is_empty_essid(essid, essid_len)) {
 119                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 120                 return escaped;
 121         }
 122
 123         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 124         while (essid_len--) {
 125                 if (*s == '\0') {
 126                         *d++ = '\\';
 127                         *d++ = '0';
 128                         s++;
 129                 } else
 130                         *d++ = *s++;
 131         }
 132         *d = '\0';
 133         return escaped;
 134 }
 135
 136 /*************** STATION TABLE MANAGEMENT ****
 137  * mac80211 should be examined to determine if sta_info is duplicating
 138  * the functionality provided here
 139  */
 140
 141 /**************************************************************/
 142
 143
 144
 145 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 146 {
 147         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 148
 149         if (hw_decrypt)
 150                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 151         else
 152                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 153
 154 }
 155
 156 /**
 157  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 158  *
 159  * NOTE:  This is really only useful during development and can eventually
 160  * be #ifdef'd out once the driver is stable and folks aren't actively
 161  * making changes
 162  */
 163 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 164 {
 165         int error = 0;
 166         int counter = 1;
 167
 168         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 169                 error |= le32_to_cpu(rxon->flags &
 170                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 171                                  RXON_FLG_RADAR_DETECT_MSK));
 172                 if (error)
 173                         IWL_WARNING("check 24G fields %d | %d\n",
 174                                     counter++, error);
 175         } else {
 176                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 177                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 178                 if (error)
 179                         IWL_WARNING("check 52 fields %d | %d\n",
 180                                     counter++, error);
 181                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 182                 if (error)
 183                         IWL_WARNING("check 52 CCK %d | %d\n",
 184                                     counter++, error);
 185         }
 186         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 187         if (error)
 188                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 189
 190         /* make sure basic rates 6Mbps and 1Mbps are supported */
 191         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 192                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 193         if (error)
 194                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 195
 196         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 197         if (error)
 198                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 199
 200         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 201                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 202         if (error)
 203                 IWL_WARNING("check CCK and short slot %d | %d\n",
 204                             counter++, error);
 205
 206         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 207                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 208         if (error)
 209                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 210                             counter++, error);
 211
 212         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 213                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 214         if (error)
 215                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 216                             counter++, error);
 217
 218         if (error)
 219                 IWL_WARNING("Tuning to channel %d\n",
 220                             le16_to_cpu(rxon->channel));
 221
 222         if (error) {
 223                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 224                 return -1;
 225         }
 226         return 0;
 227 }
 228
 229 /**
 230  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 231  * @priv: staging_rxon is compared to active_rxon
 232  *
 233  * If the RXON structure is changing enough to require a new tune,
 234  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 235  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 236  */
 237 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 238 {
 239
 240         /* These items are only settable from the full RXON command */
 241         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 242             compare_ether_addr(priv->staging_rxon.bssid_addr,
 243                                priv->active_rxon.bssid_addr) ||
 244             compare_ether_addr(priv->staging_rxon.node_addr,
 245                                priv->active_rxon.node_addr) ||
 246             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 247                                priv->active_rxon.wlap_bssid_addr) ||
 248             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 249             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 250             (priv->staging_rxon.air_propagation !=
 251              priv->active_rxon.air_propagation) ||
 252             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 253              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 254             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 255              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 256             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 257             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 258                 return 1;
 259
 260         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 261          * be updated with the RXON_ASSOC command -- however only some
 262          * flag transitions are allowed using RXON_ASSOC */
 263
 264         /* Check if we are not switching bands */
 265         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 266             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 267                 return 1;
 268
 269         /* Check if we are switching association toggle */
 270         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 271                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 272                 return 1;
 273
 274         return 0;
 275 }
 276
 277 /**
 278  * iwl4965_commit_rxon - commit staging_rxon to hardware
 279  *
 280  * The RXON command in staging_rxon is committed to the hardware and
 281  * the active_rxon structure is updated with the new data.  This
 282  * function correctly transitions out of the RXON_ASSOC_MSK state if
 283  * a HW tune is required based on the RXON structure changes.
 284  */
 285 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 286 {
 287         /* cast away the const for active_rxon in this function */
 288         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 289         DECLARE_MAC_BUF(mac);
 290         int rc = 0;
 291
 292         if (!iwl_is_alive(priv))
 293                 return -1;
 294
 295         /* always get timestamp with Rx frame */
 296         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 297
 298         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 299         if (rc) {
 300                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 301                 return -EINVAL;
 302         }
 303
 304         /* If we don't need to send a full RXON, we can use
 305          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 306          * and other flags for the current radio configuration. */
 307         if (!iwl4965_full_rxon_required(priv)) {
 308                 rc = iwl_send_rxon_assoc(priv);
 309                 if (rc) {
 310                         IWL_ERROR("Error setting RXON_ASSOC "
 311                                   "configuration (%d).\n", rc);
 312                         return rc;
 313                 }
 314
 315                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 316
 317                 return 0;
 318         }
 319
 320         /* station table will be cleared */
 321         priv->assoc_station_added = 0;
 322
 323         /* If we are currently associated and the new config requires
 324          * an RXON_ASSOC and the new config wants the associated mask enabled,
 325          * we must clear the associated from the active configuration
 326          * before we apply the new config */
 327         if (iwl_is_associated(priv) &&
 328             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 329                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 330                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 331
 332                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 333                                       sizeof(struct iwl_rxon_cmd),
 334                                       &priv->active_rxon);
 335
 336                 /* If the mask clearing failed then we set
 337                  * active_rxon back to what it was previously */
 338                 if (rc) {
 339                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 340                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 341                                   "configuration (%d).\n", rc);
 342                         return rc;
 343                 }
 344         }
 345
 346         IWL_DEBUG_INFO("Sending RXON\n"
 347                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 348                        "* channel = %d\n"
 349                        "* bssid = %s\n",
 350                        ((priv->staging_rxon.filter_flags &
 351                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 352                        le16_to_cpu(priv->staging_rxon.channel),
 353                        print_mac(mac, priv->staging_rxon.bssid_addr));
 354
 355         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 356         /* Apply the new configuration */
 357         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 358                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 359         if (rc) {
 360                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 361                 return rc;
 362         }
 363
 364         iwl_remove_station(priv, iwl_bcast_addr, 0);
 365         iwlcore_clear_stations_table(priv);
 366
 367         if (!priv->error_recovering)
 368                 priv->start_calib = 0;
 369
 370         iwl_init_sensitivity(priv);
 371
 372         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 373
 374         /* If we issue a new RXON command which required a tune then we must
 375          * send a new TXPOWER command or we won't be able to Tx any frames */
 376         rc = iwl4965_hw_reg_send_txpower(priv);
 377         if (rc) {
 378                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 379                 return rc;
 380         }
 381
 382         /* Add the broadcast address so we can send broadcast frames */
 383         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 384             IWL_INVALID_STATION) {
 385                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 386                 return -EIO;
 387         }
 388
 389         /* If we have set the ASSOC_MSK and we are in BSS mode then
 390          * add the IWL_AP_ID to the station rate table */
 391         if (iwl_is_associated(priv) &&
 392             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 393                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 394                     == IWL_INVALID_STATION) {
 395                         IWL_ERROR("Error adding AP address for transmit.\n");
 396                         return -EIO;
 397                 }
 398                 priv->assoc_station_added = 1;
 399                 if (priv->default_wep_key &&
 400                     iwl_send_static_wepkey_cmd(priv, 0))
 401                         IWL_ERROR("Could not send WEP static key.\n");
 402         }
 403
 404         return 0;
 405 }
 406
 407 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 408 {
 409
 410         iwl_set_rxon_chain(priv);
 411         iwl4965_commit_rxon(priv);
 412 }
 413
 414 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 415 {
 416         struct iwl4965_bt_cmd bt_cmd = {
 417                 .flags = 3,
 418                 .lead_time = 0xAA,
 419                 .max_kill = 1,
 420                 .kill_ack_mask = 0,
 421                 .kill_cts_mask = 0,
 422         };
 423
 424         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 425                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 426 }
 427
 428 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 429 {
 430         int ret = 0;
 431         struct iwl_rx_packet *res;
 432         struct iwl_host_cmd cmd = {
 433                 .id = REPLY_SCAN_ABORT_CMD,
 434                 .meta.flags = CMD_WANT_SKB,
 435         };
 436
 437         /* If there isn't a scan actively going on in the hardware
 438          * then we are in between scan bands and not actually
 439          * actively scanning, so don't send the abort command */
 440         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 441                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 442                 return 0;
 443         }
 444
 445         ret = iwl_send_cmd_sync(priv, &cmd);
 446         if (ret) {
 447                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 448                 return ret;
 449         }
 450
 451         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 452         if (res->u.status != CAN_ABORT_STATUS) {
 453                 /* The scan abort will return 1 for success or
 454                  * 2 for "failure".  A failure condition can be
 455                  * due to simply not being in an active scan which
 456                  * can occur if we send the scan abort before we
 457                  * the microcode has notified us that a scan is
 458                  * completed. */
 459                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 460                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 461                 clear_bit(STATUS_SCAN_HW, &priv->status);
 462         }
 463
 464         dev_kfree_skb_any(cmd.meta.u.skb);
 465
 466         return ret;
 467 }
 468
 469 /*
 470  * CARD_STATE_CMD
 471  *
 472  * Use: Sets the device's internal card state to enable, disable, or halt
 473  *
 474  * When in the 'enable' state the card operates as normal.
 475  * When in the 'disable' state, the card enters into a low power mode.
 476  * When in the 'halt' state, the card is shut down and must be fully
 477  * restarted to come back on.
 478  */
 479 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
 480 {
 481         struct iwl_host_cmd cmd = {
 482                 .id = REPLY_CARD_STATE_CMD,
 483                 .len = sizeof(u32),
 484                 .data = &flags,
 485                 .meta.flags = meta_flag,
 486         };
 487
 488         return iwl_send_cmd(priv, &cmd);
 489 }
 490
 491 static void iwl_clear_free_frames(struct iwl_priv *priv)
 492 {
 493         struct list_head *element;
 494
 495         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 496                        priv->frames_count);
 497
 498         while (!list_empty(&priv->free_frames)) {
 499                 element = priv->free_frames.next;
 500                 list_del(element);
 501                 kfree(list_entry(element, struct iwl_frame, list));
 502                 priv->frames_count--;
 503         }
 504
 505         if (priv->frames_count) {
 506                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 507                             priv->frames_count);
 508                 priv->frames_count = 0;
 509         }
 510 }
 511
 512 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 513 {
 514         struct iwl_frame *frame;
 515         struct list_head *element;
 516         if (list_empty(&priv->free_frames)) {
 517                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 518                 if (!frame) {
 519                         IWL_ERROR("Could not allocate frame!\n");
 520                         return NULL;
 521                 }
 522
 523                 priv->frames_count++;
 524                 return frame;
 525         }
 526
 527         element = priv->free_frames.next;
 528         list_del(element);
 529         return list_entry(element, struct iwl_frame, list);
 530 }
 531
 532 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 533 {
 534         memset(frame, 0, sizeof(*frame));
 535         list_add(&frame->list, &priv->free_frames);
 536 }
 537
 538 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 539                                 struct ieee80211_hdr *hdr,
 540                                 const u8 *dest, int left)
 541 {
 542
 543         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 544             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 545              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 546                 return 0;
 547
 548         if (priv->ibss_beacon->len > left)
 549                 return 0;
 550
 551         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 552
 553         return priv->ibss_beacon->len;
 554 }
 555
 556 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 557 {
 558         int i;
 559         int rate_mask;
 560
 561         /* Set rate mask*/
 562         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 563                 rate_mask = priv->active_rate_basic & 0xF;
 564         else
 565                 rate_mask = priv->active_rate_basic & 0xFF0;
 566
 567         /* Find lowest valid rate */
 568         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 569                                         i = iwl_rates[i].next_ieee) {
 570                 if (rate_mask & (1 << i))
 571                         return iwl_rates[i].plcp;
 572         }
 573
 574         /* No valid rate was found. Assign the lowest one */
 575         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 576                 return IWL_RATE_1M_PLCP;
 577         else
 578                 return IWL_RATE_6M_PLCP;
 579 }
 580
 581 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 582 {
 583         struct iwl_frame *frame;
 584         unsigned int frame_size;
 585         int rc;
 586         u8 rate;
 587
 588         frame = iwl_get_free_frame(priv);
 589
 590         if (!frame) {
 591                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 592                           "command.\n");
 593                 return -ENOMEM;
 594         }
 595
 596         rate = iwl4965_rate_get_lowest_plcp(priv);
 597
 598         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 599
 600         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 601                               &frame->u.cmd[0]);
 602
 603         iwl_free_frame(priv, frame);
 604
 605         return rc;
 606 }
 607
 608 /******************************************************************************
 609  *
 610  * Misc. internal state and helper functions
 611  *
 612  ******************************************************************************/
 613
 614 /**
 615  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
 616  *
 617  * return : set the bit for each supported rate insert in ie
 618  */
 619 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
 620                                     u16 basic_rate, int *left)
 621 {
 622         u16 ret_rates = 0, bit;
 623         int i;
 624         u8 *cnt = ie;
 625         u8 *rates = ie + 1;
 626
 627         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
 628                 if (bit & supported_rate) {
 629                         ret_rates |= bit;
 630                         rates[*cnt] = iwl_rates[i].ieee |
 631                                 ((bit & basic_rate) ? 0x80 : 0x00);
 632                         (*cnt)++;
 633                         (*left)--;
 634                         if ((*left <= 0) ||
 635                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
 636                                 break;
 637                 }
 638         }
 639
 640         return ret_rates;
 641 }
 642
 643 #ifdef CONFIG_IWL4965_HT
 644 static void iwl4965_ht_conf(struct iwl_priv *priv,
 645                             struct ieee80211_bss_conf *bss_conf)
 646 {
 647         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 648         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 649         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 650
 651         IWL_DEBUG_MAC80211("enter: \n");
 652
 653         iwl_conf->is_ht = bss_conf->assoc_ht;
 654
 655         if (!iwl_conf->is_ht)
 656                 return;
 657
 658         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 659
 660         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 661                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 662         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 663                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 664
 665         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 666         iwl_conf->max_amsdu_size =
 667                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 668
 669         iwl_conf->supported_chan_width =
 670                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 671         iwl_conf->extension_chan_offset =
 672                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 673         /* If no above or below channel supplied disable FAT channel */
 674         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
 675             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
 676                 iwl_conf->supported_chan_width = 0;
 677
 678         iwl_conf->tx_mimo_ps_mode =
 679                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 680         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 681
 682         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 683         iwl_conf->tx_chan_width =
 684                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 685         iwl_conf->ht_protection =
 686                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 687         iwl_conf->non_GF_STA_present =
 688                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 689
 690         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 691         IWL_DEBUG_MAC80211("leave\n");
 692 }
 693
 694 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 695                         u8 *pos, int *left)
 696 {
 697         struct ieee80211_ht_cap *ht_cap;
 698
 699         if (!sband || !sband->ht_info.ht_supported)
 700                 return;
 701
 702         if (*left < sizeof(struct ieee80211_ht_cap))
 703                 return;
 704
 705         *pos++ = sizeof(struct ieee80211_ht_cap);
 706         ht_cap = (struct ieee80211_ht_cap *) pos;
 707
 708         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
 709         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
 710         ht_cap->ampdu_params_info =
 711                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
 712                 ((sband->ht_info.ampdu_density << 2) &
 713                         IEEE80211_HT_CAP_AMPDU_DENSITY);
 714         *left -= sizeof(struct ieee80211_ht_cap);
 715 }
 716 #else
 717 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
 718                                    struct ieee80211_bss_conf *bss_conf)
 719 {
 720 }
 721 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 722                         u8 *pos, int *left)
 723 {
 724 }
 725 #endif
 726
 727
 728 /**
 729  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
 730  */
 731 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
 732                                   enum ieee80211_band band,
 733                                   struct ieee80211_mgmt *frame,
 734                                   int left, int is_direct)
 735 {
 736         int len = 0;
 737         u8 *pos = NULL;
 738         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
 739         const struct ieee80211_supported_band *sband =
 740                                                 iwl_get_hw_mode(priv, band);
 741
 742         /* Make sure there is enough space for the probe request,
 743          * two mandatory IEs and the data */
 744         left -= 24;
 745         if (left < 0)
 746                 return 0;
 747         len += 24;
 748
 749         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 750         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
 751         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
 752         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
 753         frame->seq_ctrl = 0;
 754
 755         /* fill in our indirect SSID IE */
 756         /* ...next IE... */
 757
 758         left -= 2;
 759         if (left < 0)
 760                 return 0;
 761         len += 2;
 762         pos = &(frame->u.probe_req.variable[0]);
 763         *pos++ = WLAN_EID_SSID;
 764         *pos++ = 0;
 765
 766         /* fill in our direct SSID IE... */
 767         if (is_direct) {
 768                 /* ...next IE... */
 769                 left -= 2 + priv->essid_len;
 770                 if (left < 0)
 771                         return 0;
 772                 /* ... fill it in... */
 773                 *pos++ = WLAN_EID_SSID;
 774                 *pos++ = priv->essid_len;
 775                 memcpy(pos, priv->essid, priv->essid_len);
 776                 pos += priv->essid_len;
 777                 len += 2 + priv->essid_len;
 778         }
 779
 780         /* fill in supported rate */
 781         /* ...next IE... */
 782         left -= 2;
 783         if (left < 0)
 784                 return 0;
 785
 786         /* ... fill it in... */
 787         *pos++ = WLAN_EID_SUPP_RATES;
 788         *pos = 0;
 789
 790         /* exclude 60M rate */
 791         active_rates = priv->rates_mask;
 792         active_rates &= ~IWL_RATE_60M_MASK;
 793
 794         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
 795
 796         cck_rates = IWL_CCK_RATES_MASK & active_rates;
 797         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
 798                         active_rate_basic, &left);
 799         active_rates &= ~ret_rates;
 800
 801         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
 802                                  active_rate_basic, &left);
 803         active_rates &= ~ret_rates;
 804
 805         len += 2 + *pos;
 806         pos += (*pos) + 1;
 807         if (active_rates == 0)
 808                 goto fill_end;
 809
 810         /* fill in supported extended rate */
 811         /* ...next IE... */
 812         left -= 2;
 813         if (left < 0)
 814                 return 0;
 815         /* ... fill it in... */
 816         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 817         *pos = 0;
 818         iwl4965_supported_rate_to_ie(pos, active_rates,
 819                                  active_rate_basic, &left);
 820         if (*pos > 0)
 821                 len += 2 + *pos;
 822
 823  fill_end:
 824         /* fill in HT IE */
 825         left -= 2;
 826         if (left < 0)
 827                 return 0;
 828
 829         *pos++ = WLAN_EID_HT_CAPABILITY;
 830         *pos = 0;
 831
 832         iwl_ht_cap_to_ie(sband, pos, &left);
 833
 834         if (*pos > 0)
 835                 len += 2 + *pos;
 836         return (u16)len;
 837 }
 838
 839 /*
 840  * QoS  support
 841 */
 842 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 843                                        struct iwl4965_qosparam_cmd *qos)
 844 {
 845
 846         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 847                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 848 }
 849
 850 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 851 {
 852         unsigned long flags;
 853
 854         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 855                 return;
 856
 857         if (!priv->qos_data.qos_enable)
 858                 return;
 859
 860         spin_lock_irqsave(&priv->lock, flags);
 861         priv->qos_data.def_qos_parm.qos_flags = 0;
 862
 863         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 864             !priv->qos_data.qos_cap.q_AP.txop_request)
 865                 priv->qos_data.def_qos_parm.qos_flags |=
 866                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 867         if (priv->qos_data.qos_active)
 868                 priv->qos_data.def_qos_parm.qos_flags |=
 869                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 870
 871 #ifdef CONFIG_IWL4965_HT
 872         if (priv->current_ht_config.is_ht)
 873                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 874 #endif /* CONFIG_IWL4965_HT */
 875
 876         spin_unlock_irqrestore(&priv->lock, flags);
 877
 878         if (force || iwl_is_associated(priv)) {
 879                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 880                                 priv->qos_data.qos_active,
 881                                 priv->qos_data.def_qos_parm.qos_flags);
 882
 883                 iwl4965_send_qos_params_command(priv,
 884                                 &(priv->qos_data.def_qos_parm));
 885         }
 886 }
 887
 888 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 889 {
 890         /* Filter incoming packets to determine if they are targeted toward
 891          * this network, discarding packets coming from ourselves */
 892         switch (priv->iw_mode) {
 893         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 894                 /* packets from our adapter are dropped (echo) */
 895                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 896                         return 0;
 897                 /* {broad,multi}cast packets to our IBSS go through */
 898                 if (is_multicast_ether_addr(header->addr1))
 899                         return !compare_ether_addr(header->addr3, priv->bssid);
 900                 /* packets to our adapter go through */
 901                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 902         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 903                 /* packets from our adapter are dropped (echo) */
 904                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 905                         return 0;
 906                 /* {broad,multi}cast packets to our BSS go through */
 907                 if (is_multicast_ether_addr(header->addr1))
 908                         return !compare_ether_addr(header->addr2, priv->bssid);
 909                 /* packets to our adapter go through */
 910                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 911         default:
 912                 break;
 913         }
 914
 915         return 1;
 916 }
 917
 918
 919
 920 /**
 921  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 922  *
 923  * NOTE: priv->mutex is not required before calling this function
 924  */
 925 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 926 {
 927         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 928                 clear_bit(STATUS_SCANNING, &priv->status);
 929                 return 0;
 930         }
 931
 932         if (test_bit(STATUS_SCANNING, &priv->status)) {
 933                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 934                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
 935                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
 936                         queue_work(priv->workqueue, &priv->abort_scan);
 937
 938                 } else
 939                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
 940
 941                 return test_bit(STATUS_SCANNING, &priv->status);
 942         }
 943
 944         return 0;
 945 }
 946
 947 /**
 948  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
 949  * @ms: amount of time to wait (in milliseconds) for scan to abort
 950  *
 951  * NOTE: priv->mutex must be held before calling this function
 952  */
 953 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
 954 {
 955         unsigned long now = jiffies;
 956         int ret;
 957
 958         ret = iwl4965_scan_cancel(priv);
 959         if (ret && ms) {
 960                 mutex_unlock(&priv->mutex);
 961                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
 962                                 test_bit(STATUS_SCANNING, &priv->status))
 963                         msleep(1);
 964                 mutex_lock(&priv->mutex);
 965
 966                 return test_bit(STATUS_SCANNING, &priv->status);
 967         }
 968
 969         return ret;
 970 }
 971
 972 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 973 {
 974         /* Reset ieee stats */
 975
 976         /* We don't reset the net_device_stats (ieee->stats) on
 977          * re-association */
 978
 979         priv->last_seq_num = -1;
 980         priv->last_frag_num = -1;
 981         priv->last_packet_time = 0;
 982
 983         iwl4965_scan_cancel(priv);
 984 }
 985
 986 #define MAX_UCODE_BEACON_INTERVAL       4096
 987 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 988
 989 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 990 {
 991         u16 new_val = 0;
 992         u16 beacon_factor = 0;
 993
 994         beacon_factor =
 995             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 996                 / MAX_UCODE_BEACON_INTERVAL;
 997         new_val = beacon_val / beacon_factor;
 998
 999         return cpu_to_le16(new_val);
1000 }
1001
1002 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1003 {
1004         u64 interval_tm_unit;
1005         u64 tsf, result;
1006         unsigned long flags;
1007         struct ieee80211_conf *conf = NULL;
1008         u16 beacon_int = 0;
1009
1010         conf = ieee80211_get_hw_conf(priv->hw);
1011
1012         spin_lock_irqsave(&priv->lock, flags);
1013         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1014         priv->rxon_timing.timestamp.dw[0] =
1015                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1016
1017         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1018
1019         tsf = priv->timestamp;
1020
1021         beacon_int = priv->beacon_int;
1022         spin_unlock_irqrestore(&priv->lock, flags);
1023
1024         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1025                 if (beacon_int == 0) {
1026                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1027                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1028                 } else {
1029                         priv->rxon_timing.beacon_interval =
1030                                 cpu_to_le16(beacon_int);
1031                         priv->rxon_timing.beacon_interval =
1032                             iwl4965_adjust_beacon_interval(
1033                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1034                 }
1035
1036                 priv->rxon_timing.atim_window = 0;
1037         } else {
1038                 priv->rxon_timing.beacon_interval =
1039                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1040                 /* TODO: we need to get atim_window from upper stack
1041                  * for now we set to 0 */
1042                 priv->rxon_timing.atim_window = 0;
1043         }
1044
1045         interval_tm_unit =
1046                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1047         result = do_div(tsf, interval_tm_unit);
1048         priv->rxon_timing.beacon_init_val =
1049             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1050
1051         IWL_DEBUG_ASSOC
1052             ("beacon interval %d beacon timer %d beacon tim %d\n",
1053                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1054                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1055                 le16_to_cpu(priv->rxon_timing.atim_window));
1056 }
1057
1058 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1059 {
1060         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1061                 IWL_ERROR("APs don't scan.\n");
1062                 return 0;
1063         }
1064
1065         if (!iwl_is_ready_rf(priv)) {
1066                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1067                 return -EIO;
1068         }
1069
1070         if (test_bit(STATUS_SCANNING, &priv->status)) {
1071                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1072                 return -EAGAIN;
1073         }
1074
1075         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1076                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1077                                "Queuing.\n");
1078                 return -EAGAIN;
1079         }
1080
1081         IWL_DEBUG_INFO("Starting scan...\n");
1082         priv->scan_bands = 2;
1083         set_bit(STATUS_SCANNING, &priv->status);
1084         priv->scan_start = jiffies;
1085         priv->scan_pass_start = priv->scan_start;
1086
1087         queue_work(priv->workqueue, &priv->request_scan);
1088
1089         return 0;
1090 }
1091
1092
1093 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1094                                           enum ieee80211_band band)
1095 {
1096         if (band == IEEE80211_BAND_5GHZ) {
1097                 priv->staging_rxon.flags &=
1098                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1099                       | RXON_FLG_CCK_MSK);
1100                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1101         } else {
1102                 /* Copied from iwl4965_post_associate() */
1103                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1104                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1105                 else
1106                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1107
1108                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1109                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1110
1111                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1112                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1113                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1114         }
1115 }
1116
1117 /*
1118  * initialize rxon structure with default values from eeprom
1119  */
1120 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1121 {
1122         const struct iwl_channel_info *ch_info;
1123
1124         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1125
1126         switch (priv->iw_mode) {
1127         case IEEE80211_IF_TYPE_AP:
1128                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1129                 break;
1130
1131         case IEEE80211_IF_TYPE_STA:
1132                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1133                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1134                 break;
1135
1136         case IEEE80211_IF_TYPE_IBSS:
1137                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1138                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1139                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1140                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1141                 break;
1142
1143         case IEEE80211_IF_TYPE_MNTR:
1144                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1145                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1146                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1147                 break;
1148         default:
1149                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1150                 break;
1151         }
1152
1153 #if 0
1154         /* TODO:  Figure out when short_preamble would be set and cache from
1155          * that */
1156         if (!hw_to_local(priv->hw)->short_preamble)
1157                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1158         else
1159                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1160 #endif
1161
1162         ch_info = iwl_get_channel_info(priv, priv->band,
1163                                        le16_to_cpu(priv->staging_rxon.channel));
1164
1165         if (!ch_info)
1166                 ch_info = &priv->channel_info[0];
1167
1168         /*
1169          * in some case A channels are all non IBSS
1170          * in this case force B/G channel
1171          */
1172         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1173             !(is_channel_ibss(ch_info)))
1174                 ch_info = &priv->channel_info[0];
1175
1176         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1177         priv->band = ch_info->band;
1178
1179         iwl4965_set_flags_for_phymode(priv, priv->band);
1180
1181         priv->staging_rxon.ofdm_basic_rates =
1182             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1183         priv->staging_rxon.cck_basic_rates =
1184             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1185
1186         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1187                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1188         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1189         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1190         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1191         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1192         iwl_set_rxon_chain(priv);
1193 }
1194
1195 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1196 {
1197         if (mode == IEEE80211_IF_TYPE_IBSS) {
1198                 const struct iwl_channel_info *ch_info;
1199
1200                 ch_info = iwl_get_channel_info(priv,
1201                         priv->band,
1202                         le16_to_cpu(priv->staging_rxon.channel));
1203
1204                 if (!ch_info || !is_channel_ibss(ch_info)) {
1205                         IWL_ERROR("channel %d not IBSS channel\n",
1206                                   le16_to_cpu(priv->staging_rxon.channel));
1207                         return -EINVAL;
1208                 }
1209         }
1210
1211         priv->iw_mode = mode;
1212
1213         iwl4965_connection_init_rx_config(priv);
1214         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1215
1216         iwlcore_clear_stations_table(priv);
1217
1218         /* dont commit rxon if rf-kill is on*/
1219         if (!iwl_is_ready_rf(priv))
1220                 return -EAGAIN;
1221
1222         cancel_delayed_work(&priv->scan_check);
1223         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1224                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1225                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1226                 return -EAGAIN;
1227         }
1228
1229         iwl4965_commit_rxon(priv);
1230
1231         return 0;
1232 }
1233
1234 static void iwl4965_set_rate(struct iwl_priv *priv)
1235 {
1236         const struct ieee80211_supported_band *hw = NULL;
1237         struct ieee80211_rate *rate;
1238         int i;
1239
1240         hw = iwl_get_hw_mode(priv, priv->band);
1241         if (!hw) {
1242                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1243                 return;
1244         }
1245
1246         priv->active_rate = 0;
1247         priv->active_rate_basic = 0;
1248
1249         for (i = 0; i < hw->n_bitrates; i++) {
1250                 rate = &(hw->bitrates[i]);
1251                 if (rate->hw_value < IWL_RATE_COUNT)
1252                         priv->active_rate |= (1 << rate->hw_value);
1253         }
1254
1255         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1256                        priv->active_rate, priv->active_rate_basic);
1257
1258         /*
1259          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1260          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1261          * OFDM
1262          */
1263         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1264                 priv->staging_rxon.cck_basic_rates =
1265                     ((priv->active_rate_basic &
1266                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1267         else
1268                 priv->staging_rxon.cck_basic_rates =
1269                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1270
1271         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1272                 priv->staging_rxon.ofdm_basic_rates =
1273                     ((priv->active_rate_basic &
1274                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1275                       IWL_FIRST_OFDM_RATE) & 0xFF;
1276         else
1277                 priv->staging_rxon.ofdm_basic_rates =
1278                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1279 }
1280
1281 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1282 {
1283         unsigned long flags;
1284
1285         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1286                 return;
1287
1288         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1289                           disable_radio ? "OFF" : "ON");
1290
1291         if (disable_radio) {
1292                 iwl4965_scan_cancel(priv);
1293                 /* FIXME: This is a workaround for AP */
1294                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1295                         spin_lock_irqsave(&priv->lock, flags);
1296                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1297                                     CSR_UCODE_SW_BIT_RFKILL);
1298                         spin_unlock_irqrestore(&priv->lock, flags);
1299                         /* call the host command only if no hw rf-kill set */
1300                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1301                             iwl_is_ready(priv))
1302                                 iwl4965_send_card_state(priv,
1303                                                         CARD_STATE_CMD_DISABLE,
1304                                                         0);
1305                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1306
1307                         /* make sure mac80211 stop sending Tx frame */
1308                         if (priv->mac80211_registered)
1309                                 ieee80211_stop_queues(priv->hw);
1310                 }
1311                 return;
1312         }
1313
1314         spin_lock_irqsave(&priv->lock, flags);
1315         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1316
1317         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1318         spin_unlock_irqrestore(&priv->lock, flags);
1319
1320         /* wake up ucode */
1321         msleep(10);
1322
1323         spin_lock_irqsave(&priv->lock, flags);
1324         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1325         if (!iwl_grab_nic_access(priv))
1326                 iwl_release_nic_access(priv);
1327         spin_unlock_irqrestore(&priv->lock, flags);
1328
1329         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1330                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1331                                   "disabled by HW switch\n");
1332                 return;
1333         }
1334
1335         queue_work(priv->workqueue, &priv->restart);
1336         return;
1337 }
1338
1339 #define IWL_PACKET_RETRY_TIME HZ
1340
1341 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1342 {
1343         u16 sc = le16_to_cpu(header->seq_ctrl);
1344         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1345         u16 frag = sc & IEEE80211_SCTL_FRAG;
1346         u16 *last_seq, *last_frag;
1347         unsigned long *last_time;
1348
1349         switch (priv->iw_mode) {
1350         case IEEE80211_IF_TYPE_IBSS:{
1351                 struct list_head *p;
1352                 struct iwl4965_ibss_seq *entry = NULL;
1353                 u8 *mac = header->addr2;
1354                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1355
1356                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1357                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1358                         if (!compare_ether_addr(entry->mac, mac))
1359                                 break;
1360                 }
1361                 if (p == &priv->ibss_mac_hash[index]) {
1362                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1363                         if (!entry) {
1364                                 IWL_ERROR("Cannot malloc new mac entry\n");
1365                                 return 0;
1366                         }
1367                         memcpy(entry->mac, mac, ETH_ALEN);
1368                         entry->seq_num = seq;
1369                         entry->frag_num = frag;
1370                         entry->packet_time = jiffies;
1371                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1372                         return 0;
1373                 }
1374                 last_seq = &entry->seq_num;
1375                 last_frag = &entry->frag_num;
1376                 last_time = &entry->packet_time;
1377                 break;
1378         }
1379         case IEEE80211_IF_TYPE_STA:
1380                 last_seq = &priv->last_seq_num;
1381                 last_frag = &priv->last_frag_num;
1382                 last_time = &priv->last_packet_time;
1383                 break;
1384         default:
1385                 return 0;
1386         }
1387         if ((*last_seq == seq) &&
1388             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1389                 if (*last_frag == frag)
1390                         goto drop;
1391                 if (*last_frag + 1 != frag)
1392                         /* out-of-order fragment */
1393                         goto drop;
1394         } else
1395                 *last_seq = seq;
1396
1397         *last_frag = frag;
1398         *last_time = jiffies;
1399         return 0;
1400
1401  drop:
1402         return 1;
1403 }
1404
1405 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1406
1407 #include "iwl-spectrum.h"
1408
1409 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1410 #define BEACON_TIME_MASK_HIGH   0xFF000000
1411 #define TIME_UNIT               1024
1412
1413 /*
1414  * extended beacon time format
1415  * time in usec will be changed into a 32-bit value in 8:24 format
1416  * the high 1 byte is the beacon counts
1417  * the lower 3 bytes is the time in usec within one beacon interval
1418  */
1419
1420 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1421 {
1422         u32 quot;
1423         u32 rem;
1424         u32 interval = beacon_interval * 1024;
1425
1426         if (!interval || !usec)
1427                 return 0;
1428
1429         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1430         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1431
1432         return (quot << 24) + rem;
1433 }
1434
1435 /* base is usually what we get from ucode with each received frame,
1436  * the same as HW timer counter counting down
1437  */
1438
1439 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1440 {
1441         u32 base_low = base & BEACON_TIME_MASK_LOW;
1442         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1443         u32 interval = beacon_interval * TIME_UNIT;
1444         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1445             (addon & BEACON_TIME_MASK_HIGH);
1446
1447         if (base_low > addon_low)
1448                 res += base_low - addon_low;
1449         else if (base_low < addon_low) {
1450                 res += interval + base_low - addon_low;
1451                 res += (1 << 24);
1452         } else
1453                 res += (1 << 24);
1454
1455         return cpu_to_le32(res);
1456 }
1457
1458 static int iwl4965_get_measurement(struct iwl_priv *priv,
1459                                struct ieee80211_measurement_params *params,
1460                                u8 type)
1461 {
1462         struct iwl4965_spectrum_cmd spectrum;
1463         struct iwl_rx_packet *res;
1464         struct iwl_host_cmd cmd = {
1465                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1466                 .data = (void *)&spectrum,
1467                 .meta.flags = CMD_WANT_SKB,
1468         };
1469         u32 add_time = le64_to_cpu(params->start_time);
1470         int rc;
1471         int spectrum_resp_status;
1472         int duration = le16_to_cpu(params->duration);
1473
1474         if (iwl_is_associated(priv))
1475                 add_time =
1476                     iwl4965_usecs_to_beacons(
1477                         le64_to_cpu(params->start_time) - priv->last_tsf,
1478                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1479
1480         memset(&spectrum, 0, sizeof(spectrum));
1481
1482         spectrum.channel_count = cpu_to_le16(1);
1483         spectrum.flags =
1484             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1485         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1486         cmd.len = sizeof(spectrum);
1487         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1488
1489         if (iwl_is_associated(priv))
1490                 spectrum.start_time =
1491                     iwl4965_add_beacon_time(priv->last_beacon_time,
1492                                 add_time,
1493                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1494         else
1495                 spectrum.start_time = 0;
1496
1497         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1498         spectrum.channels[0].channel = params->channel;
1499         spectrum.channels[0].type = type;
1500         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1501                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1502                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1503
1504         rc = iwl_send_cmd_sync(priv, &cmd);
1505         if (rc)
1506                 return rc;
1507
1508         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1509         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1510                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1511                 rc = -EIO;
1512         }
1513
1514         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1515         switch (spectrum_resp_status) {
1516         case 0:         /* Command will be handled */
1517                 if (res->u.spectrum.id != 0xff) {
1518                         IWL_DEBUG_INFO
1519                             ("Replaced existing measurement: %d\n",
1520                              res->u.spectrum.id);
1521                         priv->measurement_status &= ~MEASUREMENT_READY;
1522                 }
1523                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1524                 rc = 0;
1525                 break;
1526
1527         case 1:         /* Command will not be handled */
1528                 rc = -EAGAIN;
1529                 break;
1530         }
1531
1532         dev_kfree_skb_any(cmd.meta.u.skb);
1533
1534         return rc;
1535 }
1536 #endif
1537
1538 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
1539                                      struct iwl_tx_info *tx_sta)
1540 {
1541         ieee80211_tx_status_irqsafe(priv->hw, tx_sta->skb[0]);
1542         tx_sta->skb[0] = NULL;
1543 }
1544
1545 /**
1546  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
1547  *
1548  * When FW advances 'R' index, all entries between old and new 'R' index
1549  * need to be reclaimed. As result, some free space forms.  If there is
1550  * enough free space (> low mark), wake the stack that feeds us.
1551  */
1552 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
1553 {
1554         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1555         struct iwl_queue *q = &txq->q;
1556         int nfreed = 0;
1557
1558         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1559                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1560                           "is out of range [0-%d] %d %d.\n", txq_id,
1561                           index, q->n_bd, q->write_ptr, q->read_ptr);
1562                 return 0;
1563         }
1564
1565         for (index = iwl_queue_inc_wrap(index, q->n_bd);
1566                 q->read_ptr != index;
1567                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1568                 if (txq_id != IWL_CMD_QUEUE_NUM) {
1569                         iwl4965_txstatus_to_ieee(priv,
1570                                         &(txq->txb[txq->q.read_ptr]));
1571                         iwl_hw_txq_free_tfd(priv, txq);
1572                 } else if (nfreed > 1) {
1573                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
1574                                         q->write_ptr, q->read_ptr);
1575                         queue_work(priv->workqueue, &priv->restart);
1576                 }
1577                 nfreed++;
1578         }
1579
1580         return nfreed;
1581 }
1582
1583 /******************************************************************************
1584  *
1585  * Generic RX handler implementations
1586  *
1587  ******************************************************************************/
1588 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1589                                 struct iwl_rx_mem_buffer *rxb)
1590 {
1591         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1592         struct iwl_alive_resp *palive;
1593         struct delayed_work *pwork;
1594
1595         palive = &pkt->u.alive_frame;
1596
1597         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1598                        "0x%01X 0x%01X\n",
1599                        palive->is_valid, palive->ver_type,
1600                        palive->ver_subtype);
1601
1602         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1603                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1604                 memcpy(&priv->card_alive_init,
1605                        &pkt->u.alive_frame,
1606                        sizeof(struct iwl_init_alive_resp));
1607                 pwork = &priv->init_alive_start;
1608         } else {
1609                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1610                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1611                        sizeof(struct iwl_alive_resp));
1612                 pwork = &priv->alive_start;
1613         }
1614
1615         /* We delay the ALIVE response by 5ms to
1616          * give the HW RF Kill time to activate... */
1617         if (palive->is_valid == UCODE_VALID_OK)
1618                 queue_delayed_work(priv->workqueue, pwork,
1619                                    msecs_to_jiffies(5));
1620         else
1621                 IWL_WARNING("uCode did not respond OK.\n");
1622 }
1623
1624 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1625                                    struct iwl_rx_mem_buffer *rxb)
1626 {
1627         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1628
1629         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1630                 "seq 0x%04X ser 0x%08X\n",
1631                 le32_to_cpu(pkt->u.err_resp.error_type),
1632                 get_cmd_string(pkt->u.err_resp.cmd_id),
1633                 pkt->u.err_resp.cmd_id,
1634                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1635                 le32_to_cpu(pkt->u.err_resp.error_info));
1636 }
1637
1638 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1639
1640 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1641 {
1642         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1643         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1644         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1645         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1646                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1647         rxon->channel = csa->channel;
1648         priv->staging_rxon.channel = csa->channel;
1649 }
1650
1651 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1652                                           struct iwl_rx_mem_buffer *rxb)
1653 {
1654 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1655         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1656         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1657
1658         if (!report->state) {
1659                 IWL_DEBUG(IWL_DL_11H,
1660                         "Spectrum Measure Notification: Start\n");
1661                 return;
1662         }
1663
1664         memcpy(&priv->measure_report, report, sizeof(*report));
1665         priv->measurement_status |= MEASUREMENT_READY;
1666 #endif
1667 }
1668
1669 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1670                                       struct iwl_rx_mem_buffer *rxb)
1671 {
1672 #ifdef CONFIG_IWLWIFI_DEBUG
1673         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1674         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1675         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1676                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1677 #endif
1678 }
1679
1680 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1681                                              struct iwl_rx_mem_buffer *rxb)
1682 {
1683         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1684         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1685                         "notification for %s:\n",
1686                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1687         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1688 }
1689
1690 static void iwl4965_bg_beacon_update(struct work_struct *work)
1691 {
1692         struct iwl_priv *priv =
1693                 container_of(work, struct iwl_priv, beacon_update);
1694         struct sk_buff *beacon;
1695
1696         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1697         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1698
1699         if (!beacon) {
1700                 IWL_ERROR("update beacon failed\n");
1701                 return;
1702         }
1703
1704         mutex_lock(&priv->mutex);
1705         /* new beacon skb is allocated every time; dispose previous.*/
1706         if (priv->ibss_beacon)
1707                 dev_kfree_skb(priv->ibss_beacon);
1708
1709         priv->ibss_beacon = beacon;
1710         mutex_unlock(&priv->mutex);
1711
1712         iwl4965_send_beacon_cmd(priv);
1713 }
1714
1715 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1716                                 struct iwl_rx_mem_buffer *rxb)
1717 {
1718 #ifdef CONFIG_IWLWIFI_DEBUG
1719         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1720         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1721         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1722
1723         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1724                 "tsf %d %d rate %d\n",
1725                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1726                 beacon->beacon_notify_hdr.failure_frame,
1727                 le32_to_cpu(beacon->ibss_mgr_status),
1728                 le32_to_cpu(beacon->high_tsf),
1729                 le32_to_cpu(beacon->low_tsf), rate);
1730 #endif
1731
1732         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1733             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1734                 queue_work(priv->workqueue, &priv->beacon_update);
1735 }
1736
1737 /* Service response to REPLY_SCAN_CMD (0x80) */
1738 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
1739                               struct iwl_rx_mem_buffer *rxb)
1740 {
1741 #ifdef CONFIG_IWLWIFI_DEBUG
1742         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1743         struct iwl4965_scanreq_notification *notif =
1744             (struct iwl4965_scanreq_notification *)pkt->u.raw;
1745
1746         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1747 #endif
1748 }
1749
1750 /* Service SCAN_START_NOTIFICATION (0x82) */
1751 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
1752                                     struct iwl_rx_mem_buffer *rxb)
1753 {
1754         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1755         struct iwl4965_scanstart_notification *notif =
1756             (struct iwl4965_scanstart_notification *)pkt->u.raw;
1757         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1758         IWL_DEBUG_SCAN("Scan start: "
1759                        "%d [802.11%s] "
1760                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1761                        notif->channel,
1762                        notif->band ? "bg" : "a",
1763                        notif->tsf_high,
1764                        notif->tsf_low, notif->status, notif->beacon_timer);
1765 }
1766
1767 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1768 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
1769                                       struct iwl_rx_mem_buffer *rxb)
1770 {
1771         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1772         struct iwl4965_scanresults_notification *notif =
1773             (struct iwl4965_scanresults_notification *)pkt->u.raw;
1774
1775         IWL_DEBUG_SCAN("Scan ch.res: "
1776                        "%d [802.11%s] "
1777                        "(TSF: 0x%08X:%08X) - %d "
1778                        "elapsed=%lu usec (%dms since last)\n",
1779                        notif->channel,
1780                        notif->band ? "bg" : "a",
1781                        le32_to_cpu(notif->tsf_high),
1782                        le32_to_cpu(notif->tsf_low),
1783                        le32_to_cpu(notif->statistics[0]),
1784                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1785                        jiffies_to_msecs(elapsed_jiffies
1786                                         (priv->last_scan_jiffies, jiffies)));
1787
1788         priv->last_scan_jiffies = jiffies;
1789         priv->next_scan_jiffies = 0;
1790 }
1791
1792 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1793 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
1794                                        struct iwl_rx_mem_buffer *rxb)
1795 {
1796         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1797         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1798
1799         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1800                        scan_notif->scanned_channels,
1801                        scan_notif->tsf_low,
1802                        scan_notif->tsf_high, scan_notif->status);
1803
1804         /* The HW is no longer scanning */
1805         clear_bit(STATUS_SCAN_HW, &priv->status);
1806
1807         /* The scan completion notification came in, so kill that timer... */
1808         cancel_delayed_work(&priv->scan_check);
1809
1810         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1811                        (priv->scan_bands == 2) ? "2.4" : "5.2",
1812                        jiffies_to_msecs(elapsed_jiffies
1813                                         (priv->scan_pass_start, jiffies)));
1814
1815         /* Remove this scanned band from the list
1816          * of pending bands to scan */
1817         priv->scan_bands--;
1818
1819         /* If a request to abort was given, or the scan did not succeed
1820          * then we reset the scan state machine and terminate,
1821          * re-queuing another scan if one has been requested */
1822         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1823                 IWL_DEBUG_INFO("Aborted scan completed.\n");
1824                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1825         } else {
1826                 /* If there are more bands on this scan pass reschedule */
1827                 if (priv->scan_bands > 0)
1828                         goto reschedule;
1829         }
1830
1831         priv->last_scan_jiffies = jiffies;
1832         priv->next_scan_jiffies = 0;
1833         IWL_DEBUG_INFO("Setting scan to off\n");
1834
1835         clear_bit(STATUS_SCANNING, &priv->status);
1836
1837         IWL_DEBUG_INFO("Scan took %dms\n",
1838                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1839
1840         queue_work(priv->workqueue, &priv->scan_completed);
1841
1842         return;
1843
1844 reschedule:
1845         priv->scan_pass_start = jiffies;
1846         queue_work(priv->workqueue, &priv->request_scan);
1847 }
1848
1849 /* Handle notification from uCode that card's power state is changing
1850  * due to software, hardware, or critical temperature RFKILL */
1851 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1852                                     struct iwl_rx_mem_buffer *rxb)
1853 {
1854         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1855         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1856         unsigned long status = priv->status;
1857
1858         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1859                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1860                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1861
1862         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1863                      RF_CARD_DISABLED)) {
1864
1865                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1866                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1867
1868                 if (!iwl_grab_nic_access(priv)) {
1869                         iwl_write_direct32(
1870                                 priv, HBUS_TARG_MBX_C,
1871                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1872
1873                         iwl_release_nic_access(priv);
1874                 }
1875
1876                 if (!(flags & RXON_CARD_DISABLED)) {
1877                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1878                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1879                         if (!iwl_grab_nic_access(priv)) {
1880                                 iwl_write_direct32(
1881                                         priv, HBUS_TARG_MBX_C,
1882                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1883
1884                                 iwl_release_nic_access(priv);
1885                         }
1886                 }
1887
1888                 if (flags & RF_CARD_DISABLED) {
1889                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1890                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1891                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1892                         if (!iwl_grab_nic_access(priv))
1893                                 iwl_release_nic_access(priv);
1894                 }
1895         }
1896
1897         if (flags & HW_CARD_DISABLED)
1898                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1899         else
1900                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1901
1902
1903         if (flags & SW_CARD_DISABLED)
1904                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1905         else
1906                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1907
1908         if (!(flags & RXON_CARD_DISABLED))
1909                 iwl4965_scan_cancel(priv);
1910
1911         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1912              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1913             (test_bit(STATUS_RF_KILL_SW, &status) !=
1914              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1915                 queue_work(priv->workqueue, &priv->rf_kill);
1916         else
1917                 wake_up_interruptible(&priv->wait_command_queue);
1918 }
1919
1920 /**
1921  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1922  *
1923  * Setup the RX handlers for each of the reply types sent from the uCode
1924  * to the host.
1925  *
1926  * This function chains into the hardware specific files for them to setup
1927  * any hardware specific handlers as well.
1928  */
1929 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1930 {
1931         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1932         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1933         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1934         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1935             iwl4965_rx_spectrum_measure_notif;
1936         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1937         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1938             iwl4965_rx_pm_debug_statistics_notif;
1939         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1940
1941         /*
1942          * The same handler is used for both the REPLY to a discrete
1943          * statistics request from the host as well as for the periodic
1944          * statistics notifications (after received beacons) from the uCode.
1945          */
1946         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1947         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1948
1949         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1950         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
1951         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1952             iwl4965_rx_scan_results_notif;
1953         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1954             iwl4965_rx_scan_complete_notif;
1955         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1956
1957         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1958             iwl_rx_missed_beacon_notif;
1959
1960         /* Set up hardware specific Rx handlers */
1961         priv->cfg->ops->lib->rx_handler_setup(priv);
1962 }
1963
1964 /**
1965  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
1966  * @rxb: Rx buffer to reclaim
1967  *
1968  * If an Rx buffer has an async callback associated with it the callback
1969  * will be executed.  The attached skb (if present) will only be freed
1970  * if the callback returns 1
1971  */
1972 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
1973                                     struct iwl_rx_mem_buffer *rxb)
1974 {
1975         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1976         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1977         int txq_id = SEQ_TO_QUEUE(sequence);
1978         int index = SEQ_TO_INDEX(sequence);
1979         int huge = sequence & SEQ_HUGE_FRAME;
1980         int cmd_index;
1981         struct iwl_cmd *cmd;
1982
1983         /* If a Tx command is being handled and it isn't in the actual
1984          * command queue then there a command routing bug has been introduced
1985          * in the queue management code. */
1986         if (txq_id != IWL_CMD_QUEUE_NUM)
1987                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
1988                           txq_id, pkt->hdr.cmd);
1989         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
1990
1991         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
1992         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
1993
1994         /* Input error checking is done when commands are added to queue. */
1995         if (cmd->meta.flags & CMD_WANT_SKB) {
1996                 cmd->meta.source->u.skb = rxb->skb;
1997                 rxb->skb = NULL;
1998         } else if (cmd->meta.u.callback &&
1999                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
2000                 rxb->skb = NULL;
2001
2002         iwl4965_tx_queue_reclaim(priv, txq_id, index);
2003
2004         if (!(cmd->meta.flags & CMD_ASYNC)) {
2005                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2006                 wake_up_interruptible(&priv->wait_command_queue);
2007         }
2008 }
2009
2010 /*
2011  * this should be called while priv->lock is locked
2012 */
2013 static void __iwl_rx_replenish(struct iwl_priv *priv)
2014 {
2015         iwl_rx_allocate(priv);
2016         iwl_rx_queue_restock(priv);
2017 }
2018
2019
2020 /**
2021  * iwl_rx_handle - Main entry function for receiving responses from uCode
2022  *
2023  * Uses the priv->rx_handlers callback function array to invoke
2024  * the appropriate handlers, including command responses,
2025  * frame-received notifications, and other notifications.
2026  */
2027 void iwl_rx_handle(struct iwl_priv *priv)
2028 {
2029         struct iwl_rx_mem_buffer *rxb;
2030         struct iwl_rx_packet *pkt;
2031         struct iwl_rx_queue *rxq = &priv->rxq;
2032         u32 r, i;
2033         int reclaim;
2034         unsigned long flags;
2035         u8 fill_rx = 0;
2036         u32 count = 8;
2037
2038         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2039          * buffer that the driver may process (last buffer filled by ucode). */
2040         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2041         i = rxq->read;
2042
2043         /* Rx interrupt, but nothing sent from uCode */
2044         if (i == r)
2045                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2046
2047         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2048                 fill_rx = 1;
2049
2050         while (i != r) {
2051                 rxb = rxq->queue[i];
2052
2053                 /* If an RXB doesn't have a Rx queue slot associated with it,
2054                  * then a bug has been introduced in the queue refilling
2055                  * routines -- catch it here */
2056                 BUG_ON(rxb == NULL);
2057
2058                 rxq->queue[i] = NULL;
2059
2060                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2061                                             priv->hw_params.rx_buf_size,
2062                                             PCI_DMA_FROMDEVICE);
2063                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2064
2065                 /* Reclaim a command buffer only if this packet is a response
2066                  *   to a (driver-originated) command.
2067                  * If the packet (e.g. Rx frame) originated from uCode,
2068                  *   there is no command buffer to reclaim.
2069                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2070                  *   but apparently a few don't get set; catch them here. */
2071                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2072                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2073                         (pkt->hdr.cmd != REPLY_RX) &&
2074                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2075                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2076                         (pkt->hdr.cmd != REPLY_TX);
2077
2078                 /* Based on type of command response or notification,
2079                  *   handle those that need handling via function in
2080                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
2081                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2082                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2083                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2084                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2085                 } else {
2086                         /* No handling needed */
2087                         IWL_DEBUG(IWL_DL_RX,
2088                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2089                                 r, i, get_cmd_string(pkt->hdr.cmd),
2090                                 pkt->hdr.cmd);
2091                 }
2092
2093                 if (reclaim) {
2094                         /* Invoke any callbacks, transfer the skb to caller, and
2095                          * fire off the (possibly) blocking iwl_send_cmd()
2096                          * as we reclaim the driver command queue */
2097                         if (rxb && rxb->skb)
2098                                 iwl4965_tx_cmd_complete(priv, rxb);
2099                         else
2100                                 IWL_WARNING("Claim null rxb?\n");
2101                 }
2102
2103                 /* For now we just don't re-use anything.  We can tweak this
2104                  * later to try and re-use notification packets and SKBs that
2105                  * fail to Rx correctly */
2106                 if (rxb->skb != NULL) {
2107                         priv->alloc_rxb_skb--;
2108                         dev_kfree_skb_any(rxb->skb);
2109                         rxb->skb = NULL;
2110                 }
2111
2112                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2113                                  priv->hw_params.rx_buf_size,
2114                                  PCI_DMA_FROMDEVICE);
2115                 spin_lock_irqsave(&rxq->lock, flags);
2116                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2117                 spin_unlock_irqrestore(&rxq->lock, flags);
2118                 i = (i + 1) & RX_QUEUE_MASK;
2119                 /* If there are a lot of unused frames,
2120                  * restock the Rx queue so ucode wont assert. */
2121                 if (fill_rx) {
2122                         count++;
2123                         if (count >= 8) {
2124                                 priv->rxq.read = i;
2125                                 __iwl_rx_replenish(priv);
2126                                 count = 0;
2127                         }
2128                 }
2129         }
2130
2131         /* Backtrack one entry */
2132         priv->rxq.read = i;
2133         iwl_rx_queue_restock(priv);
2134 }
2135 /* Convert linear signal-to-noise ratio into dB */
2136 static u8 ratio2dB[100] = {
2137 /*       0   1   2   3   4   5   6   7   8   9 */
2138          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2139         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2140         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2141         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2142         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2143         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2144         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2145         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2146         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2147         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2148 };
2149
2150 /* Calculates a relative dB value from a ratio of linear
2151  *   (i.e. not dB) signal levels.
2152  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2153 int iwl4965_calc_db_from_ratio(int sig_ratio)
2154 {
2155         /* 1000:1 or higher just report as 60 dB */
2156         if (sig_ratio >= 1000)
2157                 return 60;
2158
2159         /* 100:1 or higher, divide by 10 and use table,
2160          *   add 20 dB to make up for divide by 10 */
2161         if (sig_ratio >= 100)
2162                 return (20 + (int)ratio2dB[sig_ratio/10]);
2163
2164         /* We shouldn't see this */
2165         if (sig_ratio < 1)
2166                 return 0;
2167
2168         /* Use table for ratios 1:1 - 99:1 */
2169         return (int)ratio2dB[sig_ratio];
2170 }
2171
2172 #define PERFECT_RSSI (-20) /* dBm */
2173 #define WORST_RSSI (-95)   /* dBm */
2174 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2175
2176 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2177  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2178  *   about formulas used below. */
2179 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2180 {
2181         int sig_qual;
2182         int degradation = PERFECT_RSSI - rssi_dbm;
2183
2184         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2185          * as indicator; formula is (signal dbm - noise dbm).
2186          * SNR at or above 40 is a great signal (100%).
2187          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2188          * Weakest usable signal is usually 10 - 15 dB SNR. */
2189         if (noise_dbm) {
2190                 if (rssi_dbm - noise_dbm >= 40)
2191                         return 100;
2192                 else if (rssi_dbm < noise_dbm)
2193                         return 0;
2194                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2195
2196         /* Else use just the signal level.
2197          * This formula is a least squares fit of data points collected and
2198          *   compared with a reference system that had a percentage (%) display
2199          *   for signal quality. */
2200         } else
2201                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2202                             (15 * RSSI_RANGE + 62 * degradation)) /
2203                            (RSSI_RANGE * RSSI_RANGE);
2204
2205         if (sig_qual > 100)
2206                 sig_qual = 100;
2207         else if (sig_qual < 1)
2208                 sig_qual = 0;
2209
2210         return sig_qual;
2211 }
2212
2213 #ifdef CONFIG_IWLWIFI_DEBUG
2214 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2215 {
2216         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2217         DECLARE_MAC_BUF(mac);
2218
2219         IWL_DEBUG_RADIO("RX CONFIG:\n");
2220         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2221         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2222         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2223         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2224                         le32_to_cpu(rxon->filter_flags));
2225         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2226         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2227                         rxon->ofdm_basic_rates);
2228         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2229         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2230                         print_mac(mac, rxon->node_addr));
2231         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2232                         print_mac(mac, rxon->bssid_addr));
2233         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2234 }
2235 #endif
2236
2237 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2238 {
2239         IWL_DEBUG_ISR("Enabling interrupts\n");
2240         set_bit(STATUS_INT_ENABLED, &priv->status);
2241         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2242 }
2243
2244 /* call this function to flush any scheduled tasklet */
2245 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2246 {
2247         /* wait to make sure we flush pedding tasklet*/
2248         synchronize_irq(priv->pci_dev->irq);
2249         tasklet_kill(&priv->irq_tasklet);
2250 }
2251
2252 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2253 {
2254         clear_bit(STATUS_INT_ENABLED, &priv->status);
2255
2256         /* disable interrupts from uCode/NIC to host */
2257         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2258
2259         /* acknowledge/clear/reset any interrupts still pending
2260          * from uCode or flow handler (Rx/Tx DMA) */
2261         iwl_write32(priv, CSR_INT, 0xffffffff);
2262         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2263         IWL_DEBUG_ISR("Disabled interrupts\n");
2264 }
2265
2266
2267 /**
2268  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2269  */
2270 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2271 {
2272         /* Set the FW error flag -- cleared on iwl4965_down */
2273         set_bit(STATUS_FW_ERROR, &priv->status);
2274
2275         /* Cancel currently queued command. */
2276         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2277
2278 #ifdef CONFIG_IWLWIFI_DEBUG
2279         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2280                 iwl_dump_nic_error_log(priv);
2281                 iwl_dump_nic_event_log(priv);
2282                 iwl4965_print_rx_config_cmd(priv);
2283         }
2284 #endif
2285
2286         wake_up_interruptible(&priv->wait_command_queue);
2287
2288         /* Keep the restart process from trying to send host
2289          * commands by clearing the INIT status bit */
2290         clear_bit(STATUS_READY, &priv->status);
2291
2292         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2293                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2294                           "Restarting adapter due to uCode error.\n");
2295
2296                 if (iwl_is_associated(priv)) {
2297                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2298                                sizeof(priv->recovery_rxon));
2299                         priv->error_recovering = 1;
2300                 }
2301                 if (priv->cfg->mod_params->restart_fw)
2302                         queue_work(priv->workqueue, &priv->restart);
2303         }
2304 }
2305
2306 static void iwl4965_error_recovery(struct iwl_priv *priv)
2307 {
2308         unsigned long flags;
2309
2310         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2311                sizeof(priv->staging_rxon));
2312         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2313         iwl4965_commit_rxon(priv);
2314
2315         iwl_rxon_add_station(priv, priv->bssid, 1);
2316
2317         spin_lock_irqsave(&priv->lock, flags);
2318         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2319         priv->error_recovering = 0;
2320         spin_unlock_irqrestore(&priv->lock, flags);
2321 }
2322
2323 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2324 {
2325         u32 inta, handled = 0;
2326         u32 inta_fh;
2327         unsigned long flags;
2328 #ifdef CONFIG_IWLWIFI_DEBUG
2329         u32 inta_mask;
2330 #endif
2331
2332         spin_lock_irqsave(&priv->lock, flags);
2333
2334         /* Ack/clear/reset pending uCode interrupts.
2335          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2336          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2337         inta = iwl_read32(priv, CSR_INT);
2338         iwl_write32(priv, CSR_INT, inta);
2339
2340         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2341          * Any new interrupts that happen after this, either while we're
2342          * in this tasklet, or later, will show up in next ISR/tasklet. */
2343         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2344         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2345
2346 #ifdef CONFIG_IWLWIFI_DEBUG
2347         if (priv->debug_level & IWL_DL_ISR) {
2348                 /* just for debug */
2349                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2350                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2351                               inta, inta_mask, inta_fh);
2352         }
2353 #endif
2354
2355         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2356          * atomic, make sure that inta covers all the interrupts that
2357          * we've discovered, even if FH interrupt came in just after
2358          * reading CSR_INT. */
2359         if (inta_fh & CSR49_FH_INT_RX_MASK)
2360                 inta |= CSR_INT_BIT_FH_RX;
2361         if (inta_fh & CSR49_FH_INT_TX_MASK)
2362                 inta |= CSR_INT_BIT_FH_TX;
2363
2364         /* Now service all interrupt bits discovered above. */
2365         if (inta & CSR_INT_BIT_HW_ERR) {
2366                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2367
2368                 /* Tell the device to stop sending interrupts */
2369                 iwl4965_disable_interrupts(priv);
2370
2371                 iwl4965_irq_handle_error(priv);
2372
2373                 handled |= CSR_INT_BIT_HW_ERR;
2374
2375                 spin_unlock_irqrestore(&priv->lock, flags);
2376
2377                 return;
2378         }
2379
2380 #ifdef CONFIG_IWLWIFI_DEBUG
2381         if (priv->debug_level & (IWL_DL_ISR)) {
2382                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2383                 if (inta & CSR_INT_BIT_SCD)
2384                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2385                                       "the frame/frames.\n");
2386
2387                 /* Alive notification via Rx interrupt will do the real work */
2388                 if (inta & CSR_INT_BIT_ALIVE)
2389                         IWL_DEBUG_ISR("Alive interrupt\n");
2390         }
2391 #endif
2392         /* Safely ignore these bits for debug checks below */
2393         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2394
2395         /* HW RF KILL switch toggled */
2396         if (inta & CSR_INT_BIT_RF_KILL) {
2397                 int hw_rf_kill = 0;
2398                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2399                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2400                         hw_rf_kill = 1;
2401
2402                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2403                                 hw_rf_kill ? "disable radio":"enable radio");
2404
2405                 /* Queue restart only if RF_KILL switch was set to "kill"
2406                  *   when we loaded driver, and is now set to "enable".
2407                  * After we're Alive, RF_KILL gets handled by
2408                  *   iwl4965_rx_card_state_notif() */
2409                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2410                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2411                         queue_work(priv->workqueue, &priv->restart);
2412                 }
2413
2414                 handled |= CSR_INT_BIT_RF_KILL;
2415         }
2416
2417         /* Chip got too hot and stopped itself */
2418         if (inta & CSR_INT_BIT_CT_KILL) {
2419                 IWL_ERROR("Microcode CT kill error detected.\n");
2420                 handled |= CSR_INT_BIT_CT_KILL;
2421         }
2422
2423         /* Error detected by uCode */
2424         if (inta & CSR_INT_BIT_SW_ERR) {
2425                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2426                           inta);
2427                 iwl4965_irq_handle_error(priv);
2428                 handled |= CSR_INT_BIT_SW_ERR;
2429         }
2430
2431         /* uCode wakes up after power-down sleep */
2432         if (inta & CSR_INT_BIT_WAKEUP) {
2433                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2434                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2435                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2436                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2437                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2438                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2439                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2440                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2441
2442                 handled |= CSR_INT_BIT_WAKEUP;
2443         }
2444
2445         /* All uCode command responses, including Tx command responses,
2446          * Rx "responses" (frame-received notification), and other
2447          * notifications from uCode come through here*/
2448         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2449                 iwl_rx_handle(priv);
2450                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2451         }
2452
2453         if (inta & CSR_INT_BIT_FH_TX) {
2454                 IWL_DEBUG_ISR("Tx interrupt\n");
2455                 handled |= CSR_INT_BIT_FH_TX;
2456                 /* FH finished to write, send event */
2457                 priv->ucode_write_complete = 1;
2458                 wake_up_interruptible(&priv->wait_command_queue);
2459         }
2460
2461         if (inta & ~handled)
2462                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2463
2464         if (inta & ~CSR_INI_SET_MASK) {
2465                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2466                          inta & ~CSR_INI_SET_MASK);
2467                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2468         }
2469
2470         /* Re-enable all interrupts */
2471         /* only Re-enable if diabled by irq */
2472         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2473                 iwl4965_enable_interrupts(priv);
2474
2475 #ifdef CONFIG_IWLWIFI_DEBUG
2476         if (priv->debug_level & (IWL_DL_ISR)) {
2477                 inta = iwl_read32(priv, CSR_INT);
2478                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2479                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2480                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2481                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2482         }
2483 #endif
2484         spin_unlock_irqrestore(&priv->lock, flags);
2485 }
2486
2487 static irqreturn_t iwl4965_isr(int irq, void *data)
2488 {
2489         struct iwl_priv *priv = data;
2490         u32 inta, inta_mask;
2491         u32 inta_fh;
2492         if (!priv)
2493                 return IRQ_NONE;
2494
2495         spin_lock(&priv->lock);
2496
2497         /* Disable (but don't clear!) interrupts here to avoid
2498          *    back-to-back ISRs and sporadic interrupts from our NIC.
2499          * If we have something to service, the tasklet will re-enable ints.
2500          * If we *don't* have something, we'll re-enable before leaving here. */
2501         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2502         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2503
2504         /* Discover which interrupts are active/pending */
2505         inta = iwl_read32(priv, CSR_INT);
2506         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2507
2508         /* Ignore interrupt if there's nothing in NIC to service.
2509          * This may be due to IRQ shared with another device,
2510          * or due to sporadic interrupts thrown from our NIC. */
2511         if (!inta && !inta_fh) {
2512                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2513                 goto none;
2514         }
2515
2516         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2517                 /* Hardware disappeared. It might have already raised
2518                  * an interrupt */
2519                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2520                 goto unplugged;
2521         }
2522
2523         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2524                       inta, inta_mask, inta_fh);
2525
2526         inta &= ~CSR_INT_BIT_SCD;
2527
2528         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2529         if (likely(inta || inta_fh))
2530                 tasklet_schedule(&priv->irq_tasklet);
2531
2532  unplugged:
2533         spin_unlock(&priv->lock);
2534         return IRQ_HANDLED;
2535
2536  none:
2537         /* re-enable interrupts here since we don't have anything to service. */
2538         /* only Re-enable if diabled by irq */
2539         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2540                 iwl4965_enable_interrupts(priv);
2541         spin_unlock(&priv->lock);
2542         return IRQ_NONE;
2543 }
2544
2545 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2546  * sending probe req.  This should be set long enough to hear probe responses
2547  * from more than one AP.  */
2548 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2549 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2550
2551 /* For faster active scanning, scan will move to the next channel if fewer than
2552  * PLCP_QUIET_THRESH packets are heard on this channel within
2553  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2554  * time if it's a quiet channel (nothing responded to our probe, and there's
2555  * no other traffic).
2556  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2557 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2558 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2559
2560 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2561  * Must be set longer than active dwell time.
2562  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2563 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2564 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2565 #define IWL_PASSIVE_DWELL_BASE      (100)
2566 #define IWL_CHANNEL_TUNE_TIME       5
2567
2568 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2569                                                 enum ieee80211_band band)
2570 {
2571         if (band == IEEE80211_BAND_5GHZ)
2572                 return IWL_ACTIVE_DWELL_TIME_52;
2573         else
2574                 return IWL_ACTIVE_DWELL_TIME_24;
2575 }
2576
2577 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2578                                           enum ieee80211_band band)
2579 {
2580         u16 active = iwl4965_get_active_dwell_time(priv, band);
2581         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2582             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2583             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2584
2585         if (iwl_is_associated(priv)) {
2586                 /* If we're associated, we clamp the maximum passive
2587                  * dwell time to be 98% of the beacon interval (minus
2588                  * 2 * channel tune time) */
2589                 passive = priv->beacon_int;
2590                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2591                         passive = IWL_PASSIVE_DWELL_BASE;
2592                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2593         }
2594
2595         if (passive <= active)
2596                 passive = active + 1;
2597
2598         return passive;
2599 }
2600
2601 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2602                                          enum ieee80211_band band,
2603                                      u8 is_active, u8 direct_mask,
2604                                      struct iwl4965_scan_channel *scan_ch)
2605 {
2606         const struct ieee80211_channel *channels = NULL;
2607         const struct ieee80211_supported_band *sband;
2608         const struct iwl_channel_info *ch_info;
2609         u16 passive_dwell = 0;
2610         u16 active_dwell = 0;
2611         int added, i;
2612
2613         sband = iwl_get_hw_mode(priv, band);
2614         if (!sband)
2615                 return 0;
2616
2617         channels = sband->channels;
2618
2619         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2620         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2621
2622         for (i = 0, added = 0; i < sband->n_channels; i++) {
2623                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2624                         continue;
2625
2626                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2627
2628                 ch_info = iwl_get_channel_info(priv, band,
2629                                          scan_ch->channel);
2630                 if (!is_channel_valid(ch_info)) {
2631                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2632                                        scan_ch->channel);
2633                         continue;
2634                 }
2635
2636                 if (!is_active || is_channel_passive(ch_info) ||
2637                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2638                         scan_ch->type = 0;      /* passive */
2639                 else
2640                         scan_ch->type = 1;      /* active */
2641
2642                 if (scan_ch->type & 1)
2643                         scan_ch->type |= (direct_mask << 1);
2644
2645                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2646                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2647
2648                 /* Set txpower levels to defaults */
2649                 scan_ch->tpc.dsp_atten = 110;
2650                 /* scan_pwr_info->tpc.dsp_atten; */
2651
2652                 /*scan_pwr_info->tpc.tx_gain; */
2653                 if (band == IEEE80211_BAND_5GHZ)
2654                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2655                 else {
2656                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2657                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2658                          * power level:
2659                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2660                          */
2661                 }
2662
2663                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2664                                scan_ch->channel,
2665                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2666                                (scan_ch->type & 1) ?
2667                                active_dwell : passive_dwell);
2668
2669                 scan_ch++;
2670                 added++;
2671         }
2672
2673         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2674         return added;
2675 }
2676
2677 /******************************************************************************
2678  *
2679  * uCode download functions
2680  *
2681  ******************************************************************************/
2682
2683 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2684 {
2685         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2686         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2687         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2688         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2689         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2690         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2691 }
2692
2693 static void iwl4965_nic_start(struct iwl_priv *priv)
2694 {
2695         /* Remove all resets to allow NIC to operate */
2696         iwl_write32(priv, CSR_RESET, 0);
2697 }
2698
2699
2700 /**
2701  * iwl4965_read_ucode - Read uCode images from disk file.
2702  *
2703  * Copy into buffers for card to fetch via bus-mastering
2704  */
2705 static int iwl4965_read_ucode(struct iwl_priv *priv)
2706 {
2707         struct iwl4965_ucode *ucode;
2708         int ret;
2709         const struct firmware *ucode_raw;
2710         const char *name = priv->cfg->fw_name;
2711         u8 *src;
2712         size_t len;
2713         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2714
2715         /* Ask kernel firmware_class module to get the boot firmware off disk.
2716          * request_firmware() is synchronous, file is in memory on return. */
2717         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2718         if (ret < 0) {
2719                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2720                                         name, ret);
2721                 goto error;
2722         }
2723
2724         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2725                        name, ucode_raw->size);
2726
2727         /* Make sure that we got at least our header! */
2728         if (ucode_raw->size < sizeof(*ucode)) {
2729                 IWL_ERROR("File size way too small!\n");
2730                 ret = -EINVAL;
2731                 goto err_release;
2732         }
2733
2734         /* Data from ucode file:  header followed by uCode images */
2735         ucode = (void *)ucode_raw->data;
2736
2737         ver = le32_to_cpu(ucode->ver);
2738         inst_size = le32_to_cpu(ucode->inst_size);
2739         data_size = le32_to_cpu(ucode->data_size);
2740         init_size = le32_to_cpu(ucode->init_size);
2741         init_data_size = le32_to_cpu(ucode->init_data_size);
2742         boot_size = le32_to_cpu(ucode->boot_size);
2743
2744         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2745         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2746                        inst_size);
2747         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2748                        data_size);
2749         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2750                        init_size);
2751         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2752                        init_data_size);
2753         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2754                        boot_size);
2755
2756         /* Verify size of file vs. image size info in file's header */
2757         if (ucode_raw->size < sizeof(*ucode) +
2758                 inst_size + data_size + init_size +
2759                 init_data_size + boot_size) {
2760
2761                 IWL_DEBUG_INFO("uCode file size %d too small\n",
2762                                (int)ucode_raw->size);
2763                 ret = -EINVAL;
2764                 goto err_release;
2765         }
2766
2767         /* Verify that uCode images will fit in card's SRAM */
2768         if (inst_size > priv->hw_params.max_inst_size) {
2769                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2770                                inst_size);
2771                 ret = -EINVAL;
2772                 goto err_release;
2773         }
2774
2775         if (data_size > priv->hw_params.max_data_size) {
2776                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2777                                 data_size);
2778                 ret = -EINVAL;
2779                 goto err_release;
2780         }
2781         if (init_size > priv->hw_params.max_inst_size) {
2782                 IWL_DEBUG_INFO
2783                     ("uCode init instr len %d too large to fit in\n",
2784                       init_size);
2785                 ret = -EINVAL;
2786                 goto err_release;
2787         }
2788         if (init_data_size > priv->hw_params.max_data_size) {
2789                 IWL_DEBUG_INFO
2790                     ("uCode init data len %d too large to fit in\n",
2791                       init_data_size);
2792                 ret = -EINVAL;
2793                 goto err_release;
2794         }
2795         if (boot_size > priv->hw_params.max_bsm_size) {
2796                 IWL_DEBUG_INFO
2797                     ("uCode boot instr len %d too large to fit in\n",
2798                       boot_size);
2799                 ret = -EINVAL;
2800                 goto err_release;
2801         }
2802
2803         /* Allocate ucode buffers for card's bus-master loading ... */
2804
2805         /* Runtime instructions and 2 copies of data:
2806          * 1) unmodified from disk
2807          * 2) backup cache for save/restore during power-downs */
2808         priv->ucode_code.len = inst_size;
2809         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2810
2811         priv->ucode_data.len = data_size;
2812         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2813
2814         priv->ucode_data_backup.len = data_size;
2815         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2816
2817         /* Initialization instructions and data */
2818         if (init_size && init_data_size) {
2819                 priv->ucode_init.len = init_size;
2820                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2821
2822                 priv->ucode_init_data.len = init_data_size;
2823                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2824
2825                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2826                         goto err_pci_alloc;
2827         }
2828
2829         /* Bootstrap (instructions only, no data) */
2830         if (boot_size) {
2831                 priv->ucode_boot.len = boot_size;
2832                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2833
2834                 if (!priv->ucode_boot.v_addr)
2835                         goto err_pci_alloc;
2836         }
2837
2838         /* Copy images into buffers for card's bus-master reads ... */
2839
2840         /* Runtime instructions (first block of data in file) */
2841         src = &ucode->data[0];
2842         len = priv->ucode_code.len;
2843         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2844         memcpy(priv->ucode_code.v_addr, src, len);
2845         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2846                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2847
2848         /* Runtime data (2nd block)
2849          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
2850         src = &ucode->data[inst_size];
2851         len = priv->ucode_data.len;
2852         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2853         memcpy(priv->ucode_data.v_addr, src, len);
2854         memcpy(priv->ucode_data_backup.v_addr, src, len);
2855
2856         /* Initialization instructions (3rd block) */
2857         if (init_size) {
2858                 src = &ucode->data[inst_size + data_size];
2859                 len = priv->ucode_init.len;
2860                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2861                                 len);
2862                 memcpy(priv->ucode_init.v_addr, src, len);
2863         }
2864
2865         /* Initialization data (4th block) */
2866         if (init_data_size) {
2867                 src = &ucode->data[inst_size + data_size + init_size];
2868                 len = priv->ucode_init_data.len;
2869                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2870                                len);
2871                 memcpy(priv->ucode_init_data.v_addr, src, len);
2872         }
2873
2874         /* Bootstrap instructions (5th block) */
2875         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2876         len = priv->ucode_boot.len;
2877         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2878         memcpy(priv->ucode_boot.v_addr, src, len);
2879
2880         /* We have our copies now, allow OS release its copies */
2881         release_firmware(ucode_raw);
2882         return 0;
2883
2884  err_pci_alloc:
2885         IWL_ERROR("failed to allocate pci memory\n");
2886         ret = -ENOMEM;
2887         iwl4965_dealloc_ucode_pci(priv);
2888
2889  err_release:
2890         release_firmware(ucode_raw);
2891
2892  error:
2893         return ret;
2894 }
2895
2896 /**
2897  * iwl_alive_start - called after REPLY_ALIVE notification received
2898  *                   from protocol/runtime uCode (initialization uCode's
2899  *                   Alive gets handled by iwl_init_alive_start()).
2900  */
2901 static void iwl_alive_start(struct iwl_priv *priv)
2902 {
2903         int ret = 0;
2904
2905         IWL_DEBUG_INFO("Runtime Alive received.\n");
2906
2907         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2908                 /* We had an error bringing up the hardware, so take it
2909                  * all the way back down so we can try again */
2910                 IWL_DEBUG_INFO("Alive failed.\n");
2911                 goto restart;
2912         }
2913
2914         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2915          * This is a paranoid check, because we would not have gotten the
2916          * "runtime" alive if code weren't properly loaded.  */
2917         if (iwl_verify_ucode(priv)) {
2918                 /* Runtime instruction load was bad;
2919                  * take it all the way back down so we can try again */
2920                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2921                 goto restart;
2922         }
2923
2924         iwlcore_clear_stations_table(priv);
2925         ret = priv->cfg->ops->lib->alive_notify(priv);
2926         if (ret) {
2927                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2928                             ret);
2929                 goto restart;
2930         }
2931
2932         /* After the ALIVE response, we can send host commands to 4965 uCode */
2933         set_bit(STATUS_ALIVE, &priv->status);
2934
2935         /* Clear out the uCode error bit if it is set */
2936         clear_bit(STATUS_FW_ERROR, &priv->status);
2937
2938         if (iwl_is_rfkill(priv))
2939                 return;
2940
2941         ieee80211_wake_queues(priv->hw);
2942
2943         priv->active_rate = priv->rates_mask;
2944         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2945
2946         if (iwl_is_associated(priv)) {
2947                 struct iwl_rxon_cmd *active_rxon =
2948                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2949
2950                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2951                        sizeof(priv->staging_rxon));
2952                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2953         } else {
2954                 /* Initialize our rx_config data */
2955                 iwl4965_connection_init_rx_config(priv);
2956                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2957         }
2958
2959         /* Configure Bluetooth device coexistence support */
2960         iwl4965_send_bt_config(priv);
2961
2962         iwl_reset_run_time_calib(priv);
2963
2964         /* Configure the adapter for unassociated operation */
2965         iwl4965_commit_rxon(priv);
2966
2967         /* At this point, the NIC is initialized and operational */
2968         iwl4965_rf_kill_ct_config(priv);
2969
2970         iwl_leds_register(priv);
2971
2972         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2973         set_bit(STATUS_READY, &priv->status);
2974         wake_up_interruptible(&priv->wait_command_queue);
2975
2976         if (priv->error_recovering)
2977                 iwl4965_error_recovery(priv);
2978
2979         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2980         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2981         return;
2982
2983  restart:
2984         queue_work(priv->workqueue, &priv->restart);
2985 }
2986
2987 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
2988
2989 static void __iwl4965_down(struct iwl_priv *priv)
2990 {
2991         unsigned long flags;
2992         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2993
2994         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2995
2996         if (!exit_pending)
2997                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2998
2999         iwl_leds_unregister(priv);
3000
3001         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3002
3003         iwlcore_clear_stations_table(priv);
3004
3005         /* Unblock any waiting calls */
3006         wake_up_interruptible_all(&priv->wait_command_queue);
3007
3008         /* Wipe out the EXIT_PENDING status bit if we are not actually
3009          * exiting the module */
3010         if (!exit_pending)
3011                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3012
3013         /* stop and reset the on-board processor */
3014         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3015
3016         /* tell the device to stop sending interrupts */
3017         spin_lock_irqsave(&priv->lock, flags);
3018         iwl4965_disable_interrupts(priv);
3019         spin_unlock_irqrestore(&priv->lock, flags);
3020         iwl_synchronize_irq(priv);
3021
3022         if (priv->mac80211_registered)
3023                 ieee80211_stop_queues(priv->hw);
3024
3025         /* If we have not previously called iwl4965_init() then
3026          * clear all bits but the RF Kill and SUSPEND bits and return */
3027         if (!iwl_is_init(priv)) {
3028                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3029                                         STATUS_RF_KILL_HW |
3030                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3031                                         STATUS_RF_KILL_SW |
3032                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3033                                         STATUS_GEO_CONFIGURED |
3034                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3035                                         STATUS_IN_SUSPEND;
3036                 goto exit;
3037         }
3038
3039         /* ...otherwise clear out all the status bits but the RF Kill and
3040          * SUSPEND bits and continue taking the NIC down. */
3041         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3042                                 STATUS_RF_KILL_HW |
3043                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3044                                 STATUS_RF_KILL_SW |
3045                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3046                                 STATUS_GEO_CONFIGURED |
3047                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3048                                 STATUS_IN_SUSPEND |
3049                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3050                                 STATUS_FW_ERROR;
3051
3052         spin_lock_irqsave(&priv->lock, flags);
3053         iwl_clear_bit(priv, CSR_GP_CNTRL,
3054                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3055         spin_unlock_irqrestore(&priv->lock, flags);
3056
3057         iwl_txq_ctx_stop(priv);
3058         iwl_rxq_stop(priv);
3059
3060         spin_lock_irqsave(&priv->lock, flags);
3061         if (!iwl_grab_nic_access(priv)) {
3062                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3063                                          APMG_CLK_VAL_DMA_CLK_RQT);
3064                 iwl_release_nic_access(priv);
3065         }
3066         spin_unlock_irqrestore(&priv->lock, flags);
3067
3068         udelay(5);
3069
3070         /* FIXME: apm_ops.suspend(priv) */
3071         priv->cfg->ops->lib->apm_ops.reset(priv);
3072         priv->cfg->ops->lib->free_shared_mem(priv);
3073
3074  exit:
3075         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3076
3077         if (priv->ibss_beacon)
3078                 dev_kfree_skb(priv->ibss_beacon);
3079         priv->ibss_beacon = NULL;
3080
3081         /* clear out any free frames */
3082         iwl_clear_free_frames(priv);
3083 }
3084
3085 static void iwl4965_down(struct iwl_priv *priv)
3086 {
3087         mutex_lock(&priv->mutex);
3088         __iwl4965_down(priv);
3089         mutex_unlock(&priv->mutex);
3090
3091         iwl4965_cancel_deferred_work(priv);
3092 }
3093
3094 #define MAX_HW_RESTARTS 5
3095
3096 static int __iwl4965_up(struct iwl_priv *priv)
3097 {
3098         int i;
3099         int ret;
3100
3101         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3102                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3103                 return -EIO;
3104         }
3105
3106         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3107                 IWL_WARNING("Radio disabled by SW RF kill (module "
3108                             "parameter)\n");
3109                 iwl_rfkill_set_hw_state(priv);
3110                 return -ENODEV;
3111         }
3112
3113         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3114                 IWL_ERROR("ucode not available for device bringup\n");
3115                 return -EIO;
3116         }
3117
3118         /* If platform's RF_KILL switch is NOT set to KILL */
3119         if (iwl_read32(priv, CSR_GP_CNTRL) &
3120                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3121                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3122         else {
3123                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3124                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3125                         iwl_rfkill_set_hw_state(priv);
3126                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3127                         return -ENODEV;
3128                 }
3129         }
3130
3131         iwl_rfkill_set_hw_state(priv);
3132         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3133
3134         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3135         if (ret) {
3136                 IWL_ERROR("Unable to allocate shared memory\n");
3137                 return ret;
3138         }
3139
3140         ret = iwl_hw_nic_init(priv);
3141         if (ret) {
3142                 IWL_ERROR("Unable to init nic\n");
3143                 return ret;
3144         }
3145
3146         /* make sure rfkill handshake bits are cleared */
3147         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3148         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3149                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3150
3151         /* clear (again), then enable host interrupts */
3152         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3153         iwl4965_enable_interrupts(priv);
3154
3155         /* really make sure rfkill handshake bits are cleared */
3156         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3157         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3158
3159         /* Copy original ucode data image from disk into backup cache.
3160          * This will be used to initialize the on-board processor's
3161          * data SRAM for a clean start when the runtime program first loads. */
3162         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3163                priv->ucode_data.len);
3164
3165         /* We return success when we resume from suspend and rf_kill is on. */
3166         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3167                 return 0;
3168
3169         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3170
3171                 iwlcore_clear_stations_table(priv);
3172
3173                 /* load bootstrap state machine,
3174                  * load bootstrap program into processor's memory,
3175                  * prepare to load the "initialize" uCode */
3176                 ret = priv->cfg->ops->lib->load_ucode(priv);
3177
3178                 if (ret) {
3179                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3180                         continue;
3181                 }
3182
3183                 /* start card; "initialize" will load runtime ucode */
3184                 iwl4965_nic_start(priv);
3185
3186                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3187
3188                 return 0;
3189         }
3190
3191         set_bit(STATUS_EXIT_PENDING, &priv->status);
3192         __iwl4965_down(priv);
3193
3194         /* tried to restart and config the device for as long as our
3195          * patience could withstand */
3196         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3197         return -EIO;
3198 }
3199
3200
3201 /*****************************************************************************
3202  *
3203  * Workqueue callbacks
3204  *
3205  *****************************************************************************/
3206
3207 static void iwl_bg_init_alive_start(struct work_struct *data)
3208 {
3209         struct iwl_priv *priv =
3210             container_of(data, struct iwl_priv, init_alive_start.work);
3211
3212         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3213                 return;
3214
3215         mutex_lock(&priv->mutex);
3216         priv->cfg->ops->lib->init_alive_start(priv);
3217         mutex_unlock(&priv->mutex);
3218 }
3219
3220 static void iwl_bg_alive_start(struct work_struct *data)
3221 {
3222         struct iwl_priv *priv =
3223             container_of(data, struct iwl_priv, alive_start.work);
3224
3225         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3226                 return;
3227
3228         mutex_lock(&priv->mutex);
3229         iwl_alive_start(priv);
3230         mutex_unlock(&priv->mutex);
3231 }
3232
3233 static void iwl4965_bg_rf_kill(struct work_struct *work)
3234 {
3235         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3236
3237         wake_up_interruptible(&priv->wait_command_queue);
3238
3239         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3240                 return;
3241
3242         mutex_lock(&priv->mutex);
3243
3244         if (!iwl_is_rfkill(priv)) {
3245                 IWL_DEBUG(IWL_DL_RF_KILL,
3246                           "HW and/or SW RF Kill no longer active, restarting "
3247                           "device\n");
3248                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3249                         queue_work(priv->workqueue, &priv->restart);
3250         } else {
3251                 /* make sure mac80211 stop sending Tx frame */
3252                 if (priv->mac80211_registered)
3253                         ieee80211_stop_queues(priv->hw);
3254
3255                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3256                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3257                                           "disabled by SW switch\n");
3258                 else
3259                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3260                                     "Kill switch must be turned off for "
3261                                     "wireless networking to work.\n");
3262         }
3263         iwl_rfkill_set_hw_state(priv);
3264
3265         mutex_unlock(&priv->mutex);
3266 }
3267
3268 static void iwl4965_bg_set_monitor(struct work_struct *work)
3269 {
3270         struct iwl_priv *priv = container_of(work,
3271                                 struct iwl_priv, set_monitor);
3272
3273         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3274
3275         mutex_lock(&priv->mutex);
3276
3277         if (!iwl_is_ready(priv))
3278                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3279         else
3280                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3281                         IWL_ERROR("iwl4965_set_mode() failed\n");
3282
3283         mutex_unlock(&priv->mutex);
3284 }
3285
3286 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3287
3288 static void iwl4965_bg_scan_check(struct work_struct *data)
3289 {
3290         struct iwl_priv *priv =
3291             container_of(data, struct iwl_priv, scan_check.work);
3292
3293         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3294                 return;
3295
3296         mutex_lock(&priv->mutex);
3297         if (test_bit(STATUS_SCANNING, &priv->status) ||
3298             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3299                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3300                         "adapter (%dms)\n",
3301                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3302
3303                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3304                         iwl4965_send_scan_abort(priv);
3305         }
3306         mutex_unlock(&priv->mutex);
3307 }
3308
3309 static void iwl4965_bg_request_scan(struct work_struct *data)
3310 {
3311         struct iwl_priv *priv =
3312             container_of(data, struct iwl_priv, request_scan);
3313         struct iwl_host_cmd cmd = {
3314                 .id = REPLY_SCAN_CMD,
3315                 .len = sizeof(struct iwl4965_scan_cmd),
3316                 .meta.flags = CMD_SIZE_HUGE,
3317         };
3318         struct iwl4965_scan_cmd *scan;
3319         struct ieee80211_conf *conf = NULL;
3320         u16 cmd_len;
3321         enum ieee80211_band band;
3322         u8 direct_mask;
3323         int ret = 0;
3324
3325         conf = ieee80211_get_hw_conf(priv->hw);
3326
3327         mutex_lock(&priv->mutex);
3328
3329         if (!iwl_is_ready(priv)) {
3330                 IWL_WARNING("request scan called when driver not ready.\n");
3331                 goto done;
3332         }
3333
3334         /* Make sure the scan wasn't cancelled before this queued work
3335          * was given the chance to run... */
3336         if (!test_bit(STATUS_SCANNING, &priv->status))
3337                 goto done;
3338
3339         /* This should never be called or scheduled if there is currently
3340          * a scan active in the hardware. */
3341         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3342                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3343                                "Ignoring second request.\n");
3344                 ret = -EIO;
3345                 goto done;
3346         }
3347
3348         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3349                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3350                 goto done;
3351         }
3352
3353         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3354                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3355                 goto done;
3356         }
3357
3358         if (iwl_is_rfkill(priv)) {
3359                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3360                 goto done;
3361         }
3362
3363         if (!test_bit(STATUS_READY, &priv->status)) {
3364                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3365                 goto done;
3366         }
3367
3368         if (!priv->scan_bands) {
3369                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3370                 goto done;
3371         }
3372
3373         if (!priv->scan) {
3374                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3375                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3376                 if (!priv->scan) {
3377                         ret = -ENOMEM;
3378                         goto done;
3379                 }
3380         }
3381         scan = priv->scan;
3382         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3383
3384         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3385         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3386
3387         if (iwl_is_associated(priv)) {
3388                 u16 interval = 0;
3389                 u32 extra;
3390                 u32 suspend_time = 100;
3391                 u32 scan_suspend_time = 100;
3392                 unsigned long flags;
3393
3394                 IWL_DEBUG_INFO("Scanning while associated...\n");
3395
3396                 spin_lock_irqsave(&priv->lock, flags);
3397                 interval = priv->beacon_int;
3398                 spin_unlock_irqrestore(&priv->lock, flags);
3399
3400                 scan->suspend_time = 0;
3401                 scan->max_out_time = cpu_to_le32(200 * 1024);
3402                 if (!interval)
3403                         interval = suspend_time;
3404
3405                 extra = (suspend_time / interval) << 22;
3406                 scan_suspend_time = (extra |
3407                     ((suspend_time % interval) * 1024));
3408                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3409                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3410                                scan_suspend_time, interval);
3411         }
3412
3413         /* We should add the ability for user to lock to PASSIVE ONLY */
3414         if (priv->one_direct_scan) {
3415                 IWL_DEBUG_SCAN
3416                     ("Kicking off one direct scan for '%s'\n",
3417                      iwl4965_escape_essid(priv->direct_ssid,
3418                                       priv->direct_ssid_len));
3419                 scan->direct_scan[0].id = WLAN_EID_SSID;
3420                 scan->direct_scan[0].len = priv->direct_ssid_len;
3421                 memcpy(scan->direct_scan[0].ssid,
3422                        priv->direct_ssid, priv->direct_ssid_len);
3423                 direct_mask = 1;
3424         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3425                 IWL_DEBUG_SCAN
3426                   ("Kicking off one direct scan for '%s' when not associated\n",
3427                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3428                 scan->direct_scan[0].id = WLAN_EID_SSID;
3429                 scan->direct_scan[0].len = priv->essid_len;
3430                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3431                 direct_mask = 1;
3432         } else {
3433                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3434                 direct_mask = 0;
3435         }
3436
3437         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3438         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3439         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3440
3441
3442         switch (priv->scan_bands) {
3443         case 2:
3444                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3445                 scan->tx_cmd.rate_n_flags =
3446                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3447                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3448
3449                 scan->good_CRC_th = 0;
3450                 band = IEEE80211_BAND_2GHZ;
3451                 break;
3452
3453         case 1:
3454                 scan->tx_cmd.rate_n_flags =
3455                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3456                                 RATE_MCS_ANT_B_MSK);
3457                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3458                 band = IEEE80211_BAND_5GHZ;
3459                 break;
3460
3461         default:
3462                 IWL_WARNING("Invalid scan band count\n");
3463                 goto done;
3464         }
3465
3466         /* We don't build a direct scan probe request; the uCode will do
3467          * that based on the direct_mask added to each channel entry */
3468         cmd_len = iwl4965_fill_probe_req(priv, band,
3469                                         (struct ieee80211_mgmt *)scan->data,
3470                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3471
3472         scan->tx_cmd.len = cpu_to_le16(cmd_len);
3473         /* select Rx chains */
3474
3475         /* Force use of chains B and C (0x6) for scan Rx.
3476          * Avoid A (0x1) because of its off-channel reception on A-band.
3477          * MIMO is not used here, but value is required to make uCode happy. */
3478         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3479                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3480                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3481                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3482
3483         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3484                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3485
3486         if (direct_mask)
3487                 scan->channel_count =
3488                         iwl4965_get_channels_for_scan(
3489                                 priv, band, 1, /* active */
3490                                 direct_mask,
3491                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3492         else
3493                 scan->channel_count =
3494                         iwl4965_get_channels_for_scan(
3495                                 priv, band, 0, /* passive */
3496                                 direct_mask,
3497                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3498
3499         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3500                                RXON_FILTER_BCON_AWARE_MSK);
3501         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3502             scan->channel_count * sizeof(struct iwl4965_scan_channel);
3503         cmd.data = scan;
3504         scan->len = cpu_to_le16(cmd.len);
3505
3506         set_bit(STATUS_SCAN_HW, &priv->status);
3507         ret = iwl_send_cmd_sync(priv, &cmd);
3508         if (ret)
3509                 goto done;
3510
3511         queue_delayed_work(priv->workqueue, &priv->scan_check,
3512                            IWL_SCAN_CHECK_WATCHDOG);
3513
3514         mutex_unlock(&priv->mutex);
3515         return;
3516
3517  done:
3518         /* inform mac80211 scan aborted */
3519         queue_work(priv->workqueue, &priv->scan_completed);
3520         mutex_unlock(&priv->mutex);
3521 }
3522
3523 static void iwl4965_bg_up(struct work_struct *data)
3524 {
3525         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3526
3527         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3528                 return;
3529
3530         mutex_lock(&priv->mutex);
3531         __iwl4965_up(priv);
3532         mutex_unlock(&priv->mutex);
3533 }
3534
3535 static void iwl4965_bg_restart(struct work_struct *data)
3536 {
3537         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3538
3539         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3540                 return;
3541
3542         iwl4965_down(priv);
3543         queue_work(priv->workqueue, &priv->up);
3544 }
3545
3546 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3547 {
3548         struct iwl_priv *priv =
3549             container_of(data, struct iwl_priv, rx_replenish);
3550
3551         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3552                 return;
3553
3554         mutex_lock(&priv->mutex);
3555         iwl_rx_replenish(priv);
3556         mutex_unlock(&priv->mutex);
3557 }
3558
3559 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3560
3561 static void iwl4965_post_associate(struct iwl_priv *priv)
3562 {
3563         struct ieee80211_conf *conf = NULL;
3564         int ret = 0;
3565         DECLARE_MAC_BUF(mac);
3566
3567         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3568                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3569                 return;
3570         }
3571
3572         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3573                         priv->assoc_id,
3574                         print_mac(mac, priv->active_rxon.bssid_addr));
3575
3576
3577         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3578                 return;
3579
3580
3581         if (!priv->vif || !priv->is_open)
3582                 return;
3583
3584         iwl4965_scan_cancel_timeout(priv, 200);
3585
3586         conf = ieee80211_get_hw_conf(priv->hw);
3587
3588         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3589         iwl4965_commit_rxon(priv);
3590
3591         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3592         iwl4965_setup_rxon_timing(priv);
3593         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3594                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3595         if (ret)
3596                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3597                             "Attempting to continue.\n");
3598
3599         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3600
3601 #ifdef CONFIG_IWL4965_HT
3602         if (priv->current_ht_config.is_ht)
3603                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3604 #endif /* CONFIG_IWL4965_HT*/
3605         iwl_set_rxon_chain(priv);
3606         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3607
3608         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3609                         priv->assoc_id, priv->beacon_int);
3610
3611         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3612                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3613         else
3614                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3615
3616         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3617                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3618                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3619                 else
3620                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3621
3622                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3623                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3624
3625         }
3626
3627         iwl4965_commit_rxon(priv);
3628
3629         switch (priv->iw_mode) {
3630         case IEEE80211_IF_TYPE_STA:
3631                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3632                 break;
3633
3634         case IEEE80211_IF_TYPE_IBSS:
3635
3636                 /* clear out the station table */
3637                 iwlcore_clear_stations_table(priv);
3638
3639                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3640                 iwl_rxon_add_station(priv, priv->bssid, 0);
3641                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3642                 iwl4965_send_beacon_cmd(priv);
3643
3644                 break;
3645
3646         default:
3647                 IWL_ERROR("%s Should not be called in %d mode\n",
3648                                 __FUNCTION__, priv->iw_mode);
3649                 break;
3650         }
3651
3652         iwl4965_sequence_reset(priv);
3653
3654         /* Enable Rx differential gain and sensitivity calibrations */
3655         iwl_chain_noise_reset(priv);
3656         priv->start_calib = 1;
3657
3658         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3659                 priv->assoc_station_added = 1;
3660
3661         iwl4965_activate_qos(priv, 0);
3662
3663         iwl_power_update_mode(priv, 0);
3664         /* we have just associated, don't start scan too early */
3665         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3666 }
3667
3668
3669 static void iwl4965_bg_post_associate(struct work_struct *data)
3670 {
3671         struct iwl_priv *priv = container_of(data, struct iwl_priv,
3672                                              post_associate.work);
3673
3674         mutex_lock(&priv->mutex);
3675         iwl4965_post_associate(priv);
3676         mutex_unlock(&priv->mutex);
3677
3678 }
3679
3680 static void iwl4965_bg_abort_scan(struct work_struct *work)
3681 {
3682         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3683
3684         if (!iwl_is_ready(priv))
3685                 return;
3686
3687         mutex_lock(&priv->mutex);
3688
3689         set_bit(STATUS_SCAN_ABORTING, &priv->status);
3690         iwl4965_send_scan_abort(priv);
3691
3692         mutex_unlock(&priv->mutex);
3693 }
3694
3695 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3696
3697 static void iwl4965_bg_scan_completed(struct work_struct *work)
3698 {
3699         struct iwl_priv *priv =
3700             container_of(work, struct iwl_priv, scan_completed);
3701
3702         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
3703
3704         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3705                 return;
3706
3707         if (test_bit(STATUS_CONF_PENDING, &priv->status))
3708                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
3709
3710         ieee80211_scan_completed(priv->hw);
3711
3712         /* Since setting the TXPOWER may have been deferred while
3713          * performing the scan, fire one off */
3714         mutex_lock(&priv->mutex);
3715         iwl4965_hw_reg_send_txpower(priv);
3716         mutex_unlock(&priv->mutex);
3717 }
3718
3719 /*****************************************************************************
3720  *
3721  * mac80211 entry point functions
3722  *
3723  *****************************************************************************/
3724
3725 #define UCODE_READY_TIMEOUT     (2 * HZ)
3726
3727 static int iwl4965_mac_start(struct ieee80211_hw *hw)
3728 {
3729         struct iwl_priv *priv = hw->priv;
3730         int ret;
3731
3732         IWL_DEBUG_MAC80211("enter\n");
3733
3734         if (pci_enable_device(priv->pci_dev)) {
3735                 IWL_ERROR("Fail to pci_enable_device\n");
3736                 return -ENODEV;
3737         }
3738         pci_restore_state(priv->pci_dev);
3739         pci_enable_msi(priv->pci_dev);
3740
3741         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3742                           DRV_NAME, priv);
3743         if (ret) {
3744                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3745                 goto out_disable_msi;
3746         }
3747
3748         /* we should be verifying the device is ready to be opened */
3749         mutex_lock(&priv->mutex);
3750
3751         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
3752         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3753          * ucode filename and max sizes are card-specific. */
3754
3755         if (!priv->ucode_code.len) {
3756                 ret = iwl4965_read_ucode(priv);
3757                 if (ret) {
3758                         IWL_ERROR("Could not read microcode: %d\n", ret);
3759                         mutex_unlock(&priv->mutex);
3760                         goto out_release_irq;
3761                 }
3762         }
3763
3764         ret = __iwl4965_up(priv);
3765
3766         mutex_unlock(&priv->mutex);
3767
3768         if (ret)
3769                 goto out_release_irq;
3770
3771         IWL_DEBUG_INFO("Start UP work done.\n");
3772
3773         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3774                 return 0;
3775
3776         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3777          * mac80211 will not be run successfully. */
3778         if (priv->ucode_type == UCODE_RT) {
3779                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3780                                 test_bit(STATUS_READY, &priv->status),
3781                                 UCODE_READY_TIMEOUT);
3782                 if (!ret) {
3783                         if (!test_bit(STATUS_READY, &priv->status)) {
3784                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3785                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
3786                                 ret = -ETIMEDOUT;
3787                                 goto out_release_irq;
3788                         }
3789                 }
3790
3791                 priv->is_open = 1;
3792         }
3793         IWL_DEBUG_MAC80211("leave\n");
3794         return 0;
3795
3796 out_release_irq:
3797         free_irq(priv->pci_dev->irq, priv);
3798 out_disable_msi:
3799         pci_disable_msi(priv->pci_dev);
3800         pci_disable_device(priv->pci_dev);
3801         priv->is_open = 0;
3802         IWL_DEBUG_MAC80211("leave - failed\n");
3803         return ret;
3804 }
3805
3806 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
3807 {
3808         struct iwl_priv *priv = hw->priv;
3809
3810         IWL_DEBUG_MAC80211("enter\n");
3811
3812         if (!priv->is_open) {
3813                 IWL_DEBUG_MAC80211("leave - skip\n");
3814                 return;
3815         }
3816
3817         priv->is_open = 0;
3818
3819         if (iwl_is_ready_rf(priv)) {
3820                 /* stop mac, cancel any scan request and clear
3821                  * RXON_FILTER_ASSOC_MSK BIT
3822                  */
3823                 mutex_lock(&priv->mutex);
3824                 iwl4965_scan_cancel_timeout(priv, 100);
3825                 cancel_delayed_work(&priv->post_associate);
3826                 mutex_unlock(&priv->mutex);
3827         }
3828
3829         iwl4965_down(priv);
3830
3831         flush_workqueue(priv->workqueue);
3832         free_irq(priv->pci_dev->irq, priv);
3833         pci_disable_msi(priv->pci_dev);
3834         pci_save_state(priv->pci_dev);
3835         pci_disable_device(priv->pci_dev);
3836
3837         IWL_DEBUG_MAC80211("leave\n");
3838 }
3839
3840 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3841 {
3842         struct iwl_priv *priv = hw->priv;
3843
3844         IWL_DEBUG_MAC80211("enter\n");
3845
3846         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3847                 IWL_DEBUG_MAC80211("leave - monitor\n");
3848                 return -1;
3849         }
3850
3851         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3852                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3853
3854         if (iwl_tx_skb(priv, skb))
3855                 dev_kfree_skb_any(skb);
3856
3857         IWL_DEBUG_MAC80211("leave\n");
3858         return 0;
3859 }
3860
3861 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
3862                                  struct ieee80211_if_init_conf *conf)
3863 {
3864         struct iwl_priv *priv = hw->priv;
3865         unsigned long flags;
3866         DECLARE_MAC_BUF(mac);
3867
3868         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
3869
3870         if (priv->vif) {
3871                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
3872                 return -EOPNOTSUPP;
3873         }
3874
3875         spin_lock_irqsave(&priv->lock, flags);
3876         priv->vif = conf->vif;
3877
3878         spin_unlock_irqrestore(&priv->lock, flags);
3879
3880         mutex_lock(&priv->mutex);
3881
3882         if (conf->mac_addr) {
3883                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3884                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3885         }
3886
3887         if (iwl_is_ready(priv))
3888                 iwl4965_set_mode(priv, conf->type);
3889
3890         mutex_unlock(&priv->mutex);
3891
3892         IWL_DEBUG_MAC80211("leave\n");
3893         return 0;
3894 }
3895
3896 /**
3897  * iwl4965_mac_config - mac80211 config callback
3898  *
3899  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3900  * be set inappropriately and the driver currently sets the hardware up to
3901  * use it whenever needed.
3902  */
3903 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3904 {
3905         struct iwl_priv *priv = hw->priv;
3906         const struct iwl_channel_info *ch_info;
3907         unsigned long flags;
3908         int ret = 0;
3909
3910         mutex_lock(&priv->mutex);
3911         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3912
3913         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3914
3915         if (!iwl_is_ready(priv)) {
3916                 IWL_DEBUG_MAC80211("leave - not ready\n");
3917                 ret = -EIO;
3918                 goto out;
3919         }
3920
3921         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3922                      test_bit(STATUS_SCANNING, &priv->status))) {
3923                 IWL_DEBUG_MAC80211("leave - scanning\n");
3924                 set_bit(STATUS_CONF_PENDING, &priv->status);
3925                 mutex_unlock(&priv->mutex);
3926                 return 0;
3927         }
3928
3929         spin_lock_irqsave(&priv->lock, flags);
3930
3931         ch_info = iwl_get_channel_info(priv, conf->channel->band,
3932                         ieee80211_frequency_to_channel(conf->channel->center_freq));
3933         if (!is_channel_valid(ch_info)) {
3934                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3935                 spin_unlock_irqrestore(&priv->lock, flags);
3936                 ret = -EINVAL;
3937                 goto out;
3938         }
3939
3940 #ifdef CONFIG_IWL4965_HT
3941         /* if we are switching from ht to 2.4 clear flags
3942          * from any ht related info since 2.4 does not
3943          * support ht */
3944         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
3945 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3946             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3947 #endif
3948         )
3949                 priv->staging_rxon.flags = 0;
3950 #endif /* CONFIG_IWL4965_HT */
3951
3952         iwl_set_rxon_channel(priv, conf->channel->band,
3953                 ieee80211_frequency_to_channel(conf->channel->center_freq));
3954
3955         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
3956
3957         /* The list of supported rates and rate mask can be different
3958          * for each band; since the band may have changed, reset
3959          * the rate mask to what mac80211 lists */
3960         iwl4965_set_rate(priv);
3961
3962         spin_unlock_irqrestore(&priv->lock, flags);
3963
3964 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3965         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3966                 iwl4965_hw_channel_switch(priv, conf->channel);
3967                 goto out;
3968         }
3969 #endif
3970
3971         if (priv->cfg->ops->lib->radio_kill_sw)
3972                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
3973
3974         if (!conf->radio_enabled) {
3975                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3976                 goto out;
3977         }
3978
3979         if (iwl_is_rfkill(priv)) {
3980                 IWL_DEBUG_MAC80211("leave - RF kill\n");
3981                 ret = -EIO;
3982                 goto out;
3983         }
3984
3985         iwl4965_set_rate(priv);
3986
3987         if (memcmp(&priv->active_rxon,
3988                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3989                 iwl4965_commit_rxon(priv);
3990         else
3991                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3992
3993         IWL_DEBUG_MAC80211("leave\n");
3994
3995 out:
3996         clear_bit(STATUS_CONF_PENDING, &priv->status);
3997         mutex_unlock(&priv->mutex);
3998         return ret;
3999 }
4000
4001 static void iwl4965_config_ap(struct iwl_priv *priv)
4002 {
4003         int ret = 0;
4004
4005         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4006                 return;
4007
4008         /* The following should be done only at AP bring up */
4009         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4010
4011                 /* RXON - unassoc (to set timing command) */
4012                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4013                 iwl4965_commit_rxon(priv);
4014
4015                 /* RXON Timing */
4016                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4017                 iwl4965_setup_rxon_timing(priv);
4018                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4019                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
4020                 if (ret)
4021                         IWL_WARNING("REPLY_RXON_TIMING failed - "
4022                                         "Attempting to continue.\n");
4023
4024                 iwl_set_rxon_chain(priv);
4025
4026                 /* FIXME: what should be the assoc_id for AP? */
4027                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4028                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4029                         priv->staging_rxon.flags |=
4030                                 RXON_FLG_SHORT_PREAMBLE_MSK;
4031                 else
4032                         priv->staging_rxon.flags &=
4033                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4034
4035                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4036                         if (priv->assoc_capability &
4037                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4038                                 priv->staging_rxon.flags |=
4039                                         RXON_FLG_SHORT_SLOT_MSK;
4040                         else
4041                                 priv->staging_rxon.flags &=
4042                                         ~RXON_FLG_SHORT_SLOT_MSK;
4043
4044                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4045                                 priv->staging_rxon.flags &=
4046                                         ~RXON_FLG_SHORT_SLOT_MSK;
4047                 }
4048                 /* restore RXON assoc */
4049                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4050                 iwl4965_commit_rxon(priv);
4051                 iwl4965_activate_qos(priv, 1);
4052                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4053         }
4054         iwl4965_send_beacon_cmd(priv);
4055
4056         /* FIXME - we need to add code here to detect a totally new
4057          * configuration, reset the AP, unassoc, rxon timing, assoc,
4058          * clear sta table, add BCAST sta... */
4059 }
4060
4061 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4062                                         struct ieee80211_vif *vif,
4063                                     struct ieee80211_if_conf *conf)
4064 {
4065         struct iwl_priv *priv = hw->priv;
4066         DECLARE_MAC_BUF(mac);
4067         unsigned long flags;
4068         int rc;
4069
4070         if (conf == NULL)
4071                 return -EIO;
4072
4073         if (priv->vif != vif) {
4074                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4075                 return 0;
4076         }
4077
4078         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4079             (!conf->beacon || !conf->ssid_len)) {
4080                 IWL_DEBUG_MAC80211
4081                     ("Leaving in AP mode because HostAPD is not ready.\n");
4082                 return 0;
4083         }
4084
4085         if (!iwl_is_alive(priv))
4086                 return -EAGAIN;
4087
4088         mutex_lock(&priv->mutex);
4089
4090         if (conf->bssid)
4091                 IWL_DEBUG_MAC80211("bssid: %s\n",
4092                                    print_mac(mac, conf->bssid));
4093
4094 /*
4095  * very dubious code was here; the probe filtering flag is never set:
4096  *
4097         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4098             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4099  */
4100
4101         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4102                 if (!conf->bssid) {
4103                         conf->bssid = priv->mac_addr;
4104                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4105                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4106                                            print_mac(mac, conf->bssid));
4107                 }
4108                 if (priv->ibss_beacon)
4109                         dev_kfree_skb(priv->ibss_beacon);
4110
4111                 priv->ibss_beacon = conf->beacon;
4112         }
4113
4114         if (iwl_is_rfkill(priv))
4115                 goto done;
4116
4117         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4118             !is_multicast_ether_addr(conf->bssid)) {
4119                 /* If there is currently a HW scan going on in the background
4120                  * then we need to cancel it else the RXON below will fail. */
4121                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4122                         IWL_WARNING("Aborted scan still in progress "
4123                                     "after 100ms\n");
4124                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4125                         mutex_unlock(&priv->mutex);
4126                         return -EAGAIN;
4127                 }
4128                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4129
4130                 /* TODO: Audit driver for usage of these members and see
4131                  * if mac80211 deprecates them (priv->bssid looks like it
4132                  * shouldn't be there, but I haven't scanned the IBSS code
4133                  * to verify) - jpk */
4134                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4135
4136                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4137                         iwl4965_config_ap(priv);
4138                 else {
4139                         rc = iwl4965_commit_rxon(priv);
4140                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4141                                 iwl_rxon_add_station(
4142                                         priv, priv->active_rxon.bssid_addr, 1);
4143                 }
4144
4145         } else {
4146                 iwl4965_scan_cancel_timeout(priv, 100);
4147                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4148                 iwl4965_commit_rxon(priv);
4149         }
4150
4151  done:
4152         spin_lock_irqsave(&priv->lock, flags);
4153         if (!conf->ssid_len)
4154                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4155         else
4156                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4157
4158         priv->essid_len = conf->ssid_len;
4159         spin_unlock_irqrestore(&priv->lock, flags);
4160
4161         IWL_DEBUG_MAC80211("leave\n");
4162         mutex_unlock(&priv->mutex);
4163
4164         return 0;
4165 }
4166
4167 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4168                                  unsigned int changed_flags,
4169                                  unsigned int *total_flags,
4170                                  int mc_count, struct dev_addr_list *mc_list)
4171 {
4172         /*
4173          * XXX: dummy
4174          * see also iwl4965_connection_init_rx_config
4175          */
4176         struct iwl_priv *priv = hw->priv;
4177         int new_flags = 0;
4178         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4179                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4180                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4181                                            IEEE80211_IF_TYPE_MNTR,
4182                                            changed_flags, *total_flags);
4183                         /* queue work 'cuz mac80211 is holding a lock which
4184                          * prevents us from issuing (synchronous) f/w cmds */
4185                         queue_work(priv->workqueue, &priv->set_monitor);
4186                         new_flags &= FIF_PROMISC_IN_BSS |
4187                                      FIF_OTHER_BSS |
4188                                      FIF_ALLMULTI;
4189                 }
4190         }
4191         *total_flags = new_flags;
4192 }
4193
4194 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4195                                      struct ieee80211_if_init_conf *conf)
4196 {
4197         struct iwl_priv *priv = hw->priv;
4198
4199         IWL_DEBUG_MAC80211("enter\n");
4200
4201         mutex_lock(&priv->mutex);
4202
4203         if (iwl_is_ready_rf(priv)) {
4204                 iwl4965_scan_cancel_timeout(priv, 100);
4205                 cancel_delayed_work(&priv->post_associate);
4206                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4207                 iwl4965_commit_rxon(priv);
4208         }
4209         if (priv->vif == conf->vif) {
4210                 priv->vif = NULL;
4211                 memset(priv->bssid, 0, ETH_ALEN);
4212                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4213                 priv->essid_len = 0;
4214         }
4215         mutex_unlock(&priv->mutex);
4216
4217         IWL_DEBUG_MAC80211("leave\n");
4218
4219 }
4220
4221 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4222 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4223                                      struct ieee80211_vif *vif,
4224                                      struct ieee80211_bss_conf *bss_conf,
4225                                      u32 changes)
4226 {
4227         struct iwl_priv *priv = hw->priv;
4228
4229         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4230
4231         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4232                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4233                                    bss_conf->use_short_preamble);
4234                 if (bss_conf->use_short_preamble)
4235                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4236                 else
4237                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4238         }
4239
4240         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4241                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4242                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4243                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4244                 else
4245                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4246         }
4247
4248         if (changes & BSS_CHANGED_HT) {
4249                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4250                 iwl4965_ht_conf(priv, bss_conf);
4251                 iwl_set_rxon_chain(priv);
4252         }
4253
4254         if (changes & BSS_CHANGED_ASSOC) {
4255                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4256                 /* This should never happen as this function should
4257                  * never be called from interrupt context. */
4258                 if (WARN_ON_ONCE(in_interrupt()))
4259                         return;
4260                 if (bss_conf->assoc) {
4261                         priv->assoc_id = bss_conf->aid;
4262                         priv->beacon_int = bss_conf->beacon_int;
4263                         priv->timestamp = bss_conf->timestamp;
4264                         priv->assoc_capability = bss_conf->assoc_capability;
4265                         priv->next_scan_jiffies = jiffies +
4266                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4267                         mutex_lock(&priv->mutex);
4268                         iwl4965_post_associate(priv);
4269                         mutex_unlock(&priv->mutex);
4270                 } else {
4271                         priv->assoc_id = 0;
4272                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4273                 }
4274         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4275                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4276                         iwl_send_rxon_assoc(priv);
4277         }
4278
4279 }
4280
4281 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4282 {
4283         int rc = 0;
4284         unsigned long flags;
4285         struct iwl_priv *priv = hw->priv;
4286
4287         IWL_DEBUG_MAC80211("enter\n");
4288
4289         mutex_lock(&priv->mutex);
4290         spin_lock_irqsave(&priv->lock, flags);
4291
4292         if (!iwl_is_ready_rf(priv)) {
4293                 rc = -EIO;
4294                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4295                 goto out_unlock;
4296         }
4297
4298         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4299                 rc = -EIO;
4300                 IWL_ERROR("ERROR: APs don't scan\n");
4301                 goto out_unlock;
4302         }
4303
4304         /* we don't schedule scan within next_scan_jiffies period */
4305         if (priv->next_scan_jiffies &&
4306                         time_after(priv->next_scan_jiffies, jiffies)) {
4307                 rc = -EAGAIN;
4308                 goto out_unlock;
4309         }
4310         /* if we just finished scan ask for delay */
4311         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4312                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4313                 rc = -EAGAIN;
4314                 goto out_unlock;
4315         }
4316         if (len) {
4317                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4318                                iwl4965_escape_essid(ssid, len), (int)len);
4319
4320                 priv->one_direct_scan = 1;
4321                 priv->direct_ssid_len = (u8)
4322                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4323                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4324         } else
4325                 priv->one_direct_scan = 0;
4326
4327         rc = iwl4965_scan_initiate(priv);
4328
4329         IWL_DEBUG_MAC80211("leave\n");
4330
4331 out_unlock:
4332         spin_unlock_irqrestore(&priv->lock, flags);
4333         mutex_unlock(&priv->mutex);
4334
4335         return rc;
4336 }
4337
4338 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4339                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4340                         u32 iv32, u16 *phase1key)
4341 {
4342         struct iwl_priv *priv = hw->priv;
4343         u8 sta_id = IWL_INVALID_STATION;
4344         unsigned long flags;
4345         __le16 key_flags = 0;
4346         int i;
4347         DECLARE_MAC_BUF(mac);
4348
4349         IWL_DEBUG_MAC80211("enter\n");
4350
4351         sta_id = iwl_find_station(priv, addr);
4352         if (sta_id == IWL_INVALID_STATION) {
4353                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4354                                    print_mac(mac, addr));
4355                 return;
4356         }
4357
4358         iwl4965_scan_cancel_timeout(priv, 100);
4359
4360         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4361         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4362         key_flags &= ~STA_KEY_FLG_INVALID;
4363
4364         if (sta_id == priv->hw_params.bcast_sta_id)
4365                 key_flags |= STA_KEY_MULTICAST_MSK;
4366
4367         spin_lock_irqsave(&priv->sta_lock, flags);
4368
4369         priv->stations[sta_id].sta.key.key_flags = key_flags;
4370         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4371
4372         for (i = 0; i < 5; i++)
4373                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4374                         cpu_to_le16(phase1key[i]);
4375
4376         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4377         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4378
4379         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4380
4381         spin_unlock_irqrestore(&priv->sta_lock, flags);
4382
4383         IWL_DEBUG_MAC80211("leave\n");
4384 }
4385
4386 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4387                            const u8 *local_addr, const u8 *addr,
4388                            struct ieee80211_key_conf *key)
4389 {
4390         struct iwl_priv *priv = hw->priv;
4391         DECLARE_MAC_BUF(mac);
4392         int ret = 0;
4393         u8 sta_id = IWL_INVALID_STATION;
4394         u8 is_default_wep_key = 0;
4395
4396         IWL_DEBUG_MAC80211("enter\n");
4397
4398         if (priv->hw_params.sw_crypto) {
4399                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4400                 return -EOPNOTSUPP;
4401         }
4402
4403         if (is_zero_ether_addr(addr))
4404                 /* only support pairwise keys */
4405                 return -EOPNOTSUPP;
4406
4407         sta_id = iwl_find_station(priv, addr);
4408         if (sta_id == IWL_INVALID_STATION) {
4409                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4410                                    print_mac(mac, addr));
4411                 return -EINVAL;
4412
4413         }
4414
4415         mutex_lock(&priv->mutex);
4416         iwl4965_scan_cancel_timeout(priv, 100);
4417         mutex_unlock(&priv->mutex);
4418
4419         /* If we are getting WEP group key and we didn't receive any key mapping
4420          * so far, we are in legacy wep mode (group key only), otherwise we are
4421          * in 1X mode.
4422          * In legacy wep mode, we use another host command to the uCode */
4423         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4424                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4425                 if (cmd == SET_KEY)
4426                         is_default_wep_key = !priv->key_mapping_key;
4427                 else
4428                         is_default_wep_key =
4429                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4430         }
4431
4432         switch (cmd) {
4433         case SET_KEY:
4434                 if (is_default_wep_key)
4435                         ret = iwl_set_default_wep_key(priv, key);
4436                 else
4437                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4438
4439                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4440                 break;
4441         case DISABLE_KEY:
4442                 if (is_default_wep_key)
4443                         ret = iwl_remove_default_wep_key(priv, key);
4444                 else
4445                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4446
4447                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4448                 break;
4449         default:
4450                 ret = -EINVAL;
4451         }
4452
4453         IWL_DEBUG_MAC80211("leave\n");
4454
4455         return ret;
4456 }
4457
4458 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4459                            const struct ieee80211_tx_queue_params *params)
4460 {
4461         struct iwl_priv *priv = hw->priv;
4462         unsigned long flags;
4463         int q;
4464
4465         IWL_DEBUG_MAC80211("enter\n");
4466
4467         if (!iwl_is_ready_rf(priv)) {
4468                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4469                 return -EIO;
4470         }
4471
4472         if (queue >= AC_NUM) {
4473                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4474                 return 0;
4475         }
4476
4477         if (!priv->qos_data.qos_enable) {
4478                 priv->qos_data.qos_active = 0;
4479                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4480                 return 0;
4481         }
4482         q = AC_NUM - 1 - queue;
4483
4484         spin_lock_irqsave(&priv->lock, flags);
4485
4486         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4487         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4488         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4489         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4490                         cpu_to_le16((params->txop * 32));
4491
4492         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4493         priv->qos_data.qos_active = 1;
4494
4495         spin_unlock_irqrestore(&priv->lock, flags);
4496
4497         mutex_lock(&priv->mutex);
4498         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4499                 iwl4965_activate_qos(priv, 1);
4500         else if (priv->assoc_id && iwl_is_associated(priv))
4501                 iwl4965_activate_qos(priv, 0);
4502
4503         mutex_unlock(&priv->mutex);
4504
4505         IWL_DEBUG_MAC80211("leave\n");
4506         return 0;
4507 }
4508
4509 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4510                                 struct ieee80211_tx_queue_stats *stats)
4511 {
4512         struct iwl_priv *priv = hw->priv;
4513         int i, avail;
4514         struct iwl_tx_queue *txq;
4515         struct iwl_queue *q;
4516         unsigned long flags;
4517
4518         IWL_DEBUG_MAC80211("enter\n");
4519
4520         if (!iwl_is_ready_rf(priv)) {
4521                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4522                 return -EIO;
4523         }
4524
4525         spin_lock_irqsave(&priv->lock, flags);
4526
4527         for (i = 0; i < AC_NUM; i++) {
4528                 txq = &priv->txq[i];
4529                 q = &txq->q;
4530                 avail = iwl_queue_space(q);
4531
4532                 stats[i].len = q->n_window - avail;
4533                 stats[i].limit = q->n_window - q->high_mark;
4534                 stats[i].count = q->n_window;
4535
4536         }
4537         spin_unlock_irqrestore(&priv->lock, flags);
4538
4539         IWL_DEBUG_MAC80211("leave\n");
4540
4541         return 0;
4542 }
4543
4544 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4545                              struct ieee80211_low_level_stats *stats)
4546 {
4547         struct iwl_priv *priv = hw->priv;
4548
4549         priv = hw->priv;
4550         IWL_DEBUG_MAC80211("enter\n");
4551         IWL_DEBUG_MAC80211("leave\n");
4552
4553         return 0;
4554 }
4555
4556 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4557 {
4558         struct iwl_priv *priv;
4559
4560         priv = hw->priv;
4561         IWL_DEBUG_MAC80211("enter\n");
4562         IWL_DEBUG_MAC80211("leave\n");
4563
4564         return 0;
4565 }
4566
4567 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4568 {
4569         struct iwl_priv *priv = hw->priv;
4570         unsigned long flags;
4571
4572         mutex_lock(&priv->mutex);
4573         IWL_DEBUG_MAC80211("enter\n");
4574
4575         priv->lq_mngr.lq_ready = 0;
4576 #ifdef CONFIG_IWL4965_HT
4577         spin_lock_irqsave(&priv->lock, flags);
4578         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4579         spin_unlock_irqrestore(&priv->lock, flags);
4580 #endif /* CONFIG_IWL4965_HT */
4581
4582         iwl_reset_qos(priv);
4583
4584         cancel_delayed_work(&priv->post_associate);
4585
4586         spin_lock_irqsave(&priv->lock, flags);
4587         priv->assoc_id = 0;
4588         priv->assoc_capability = 0;
4589         priv->assoc_station_added = 0;
4590
4591         /* new association get rid of ibss beacon skb */
4592         if (priv->ibss_beacon)
4593                 dev_kfree_skb(priv->ibss_beacon);
4594
4595         priv->ibss_beacon = NULL;
4596
4597         priv->beacon_int = priv->hw->conf.beacon_int;
4598         priv->timestamp = 0;
4599         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4600                 priv->beacon_int = 0;
4601
4602         spin_unlock_irqrestore(&priv->lock, flags);
4603
4604         if (!iwl_is_ready_rf(priv)) {
4605                 IWL_DEBUG_MAC80211("leave - not ready\n");
4606                 mutex_unlock(&priv->mutex);
4607                 return;
4608         }
4609
4610         /* we are restarting association process
4611          * clear RXON_FILTER_ASSOC_MSK bit
4612          */
4613         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4614                 iwl4965_scan_cancel_timeout(priv, 100);
4615                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4616                 iwl4965_commit_rxon(priv);
4617         }
4618
4619         iwl_power_update_mode(priv, 0);
4620
4621         /* Per mac80211.h: This is only used in IBSS mode... */
4622         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4623
4624                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4625                 mutex_unlock(&priv->mutex);
4626                 return;
4627         }
4628
4629         iwl4965_set_rate(priv);
4630
4631         mutex_unlock(&priv->mutex);
4632
4633         IWL_DEBUG_MAC80211("leave\n");
4634 }
4635
4636 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4637 {
4638         struct iwl_priv *priv = hw->priv;
4639         unsigned long flags;
4640
4641         mutex_lock(&priv->mutex);
4642         IWL_DEBUG_MAC80211("enter\n");
4643
4644         if (!iwl_is_ready_rf(priv)) {
4645                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4646                 mutex_unlock(&priv->mutex);
4647                 return -EIO;
4648         }
4649
4650         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4651                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4652                 mutex_unlock(&priv->mutex);
4653                 return -EIO;
4654         }
4655
4656         spin_lock_irqsave(&priv->lock, flags);
4657
4658         if (priv->ibss_beacon)
4659                 dev_kfree_skb(priv->ibss_beacon);
4660
4661         priv->ibss_beacon = skb;
4662
4663         priv->assoc_id = 0;
4664
4665         IWL_DEBUG_MAC80211("leave\n");
4666         spin_unlock_irqrestore(&priv->lock, flags);
4667
4668         iwl_reset_qos(priv);
4669
4670         queue_work(priv->workqueue, &priv->post_associate.work);
4671
4672         mutex_unlock(&priv->mutex);
4673
4674         return 0;
4675 }
4676
4677 /*****************************************************************************
4678  *
4679  * sysfs attributes
4680  *
4681  *****************************************************************************/
4682
4683 #ifdef CONFIG_IWLWIFI_DEBUG
4684
4685 /*
4686  * The following adds a new attribute to the sysfs representation
4687  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4688  * used for controlling the debug level.
4689  *
4690  * See the level definitions in iwl for details.
4691  */
4692
4693 static ssize_t show_debug_level(struct device *d,
4694                                 struct device_attribute *attr, char *buf)
4695 {
4696         struct iwl_priv *priv = d->driver_data;
4697
4698         return sprintf(buf, "0x%08X\n", priv->debug_level);
4699 }
4700 static ssize_t store_debug_level(struct device *d,
4701                                 struct device_attribute *attr,
4702                                  const char *buf, size_t count)
4703 {
4704         struct iwl_priv *priv = d->driver_data;
4705         char *p = (char *)buf;
4706         u32 val;
4707
4708         val = simple_strtoul(p, &p, 0);
4709         if (p == buf)
4710                 printk(KERN_INFO DRV_NAME
4711                        ": %s is not in hex or decimal form.\n", buf);
4712         else
4713                 priv->debug_level = val;
4714
4715         return strnlen(buf, count);
4716 }
4717
4718 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4719                         show_debug_level, store_debug_level);
4720
4721
4722 #endif /* CONFIG_IWLWIFI_DEBUG */
4723
4724
4725 static ssize_t show_version(struct device *d,
4726                                 struct device_attribute *attr, char *buf)
4727 {
4728         struct iwl_priv *priv = d->driver_data;
4729         struct iwl_alive_resp *palive = &priv->card_alive;
4730
4731         if (palive->is_valid)
4732                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4733                                     "fw type: 0x%01X 0x%01X\n",
4734                                 palive->ucode_major, palive->ucode_minor,
4735                                 palive->sw_rev[0], palive->sw_rev[1],
4736                                 palive->ver_type, palive->ver_subtype);
4737
4738         else
4739                 return sprintf(buf, "fw not loaded\n");
4740 }
4741
4742 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4743
4744 static ssize_t show_temperature(struct device *d,
4745                                 struct device_attribute *attr, char *buf)
4746 {
4747         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4748
4749         if (!iwl_is_alive(priv))
4750                 return -EAGAIN;
4751
4752         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
4753 }
4754
4755 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4756
4757 static ssize_t show_rs_window(struct device *d,
4758                               struct device_attribute *attr,
4759                               char *buf)
4760 {
4761         struct iwl_priv *priv = d->driver_data;
4762         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
4763 }
4764 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4765
4766 static ssize_t show_tx_power(struct device *d,
4767                              struct device_attribute *attr, char *buf)
4768 {
4769         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4770         return sprintf(buf, "%d\n", priv->user_txpower_limit);
4771 }
4772
4773 static ssize_t store_tx_power(struct device *d,
4774                               struct device_attribute *attr,
4775                               const char *buf, size_t count)
4776 {
4777         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4778         char *p = (char *)buf;
4779         u32 val;
4780
4781         val = simple_strtoul(p, &p, 10);
4782         if (p == buf)
4783                 printk(KERN_INFO DRV_NAME
4784                        ": %s is not in decimal form.\n", buf);
4785         else
4786                 iwl4965_hw_reg_set_txpower(priv, val);
4787
4788         return count;
4789 }
4790
4791 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4792
4793 static ssize_t show_flags(struct device *d,
4794                           struct device_attribute *attr, char *buf)
4795 {
4796         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4797
4798         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4799 }
4800
4801 static ssize_t store_flags(struct device *d,
4802                            struct device_attribute *attr,
4803                            const char *buf, size_t count)
4804 {
4805         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4806         u32 flags = simple_strtoul(buf, NULL, 0);
4807
4808         mutex_lock(&priv->mutex);
4809         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4810                 /* Cancel any currently running scans... */
4811                 if (iwl4965_scan_cancel_timeout(priv, 100))
4812                         IWL_WARNING("Could not cancel scan.\n");
4813                 else {
4814                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4815                                        flags);
4816                         priv->staging_rxon.flags = cpu_to_le32(flags);
4817                         iwl4965_commit_rxon(priv);
4818                 }
4819         }
4820         mutex_unlock(&priv->mutex);
4821
4822         return count;
4823 }
4824
4825 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4826
4827 static ssize_t show_filter_flags(struct device *d,
4828                                  struct device_attribute *attr, char *buf)
4829 {
4830         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4831
4832         return sprintf(buf, "0x%04X\n",
4833                 le32_to_cpu(priv->active_rxon.filter_flags));
4834 }
4835
4836 static ssize_t store_filter_flags(struct device *d,
4837                                   struct device_attribute *attr,
4838                                   const char *buf, size_t count)
4839 {
4840         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4841         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4842
4843         mutex_lock(&priv->mutex);
4844         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4845                 /* Cancel any currently running scans... */
4846                 if (iwl4965_scan_cancel_timeout(priv, 100))
4847                         IWL_WARNING("Could not cancel scan.\n");
4848                 else {
4849                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4850                                        "0x%04X\n", filter_flags);
4851                         priv->staging_rxon.filter_flags =
4852                                 cpu_to_le32(filter_flags);
4853                         iwl4965_commit_rxon(priv);
4854                 }
4855         }
4856         mutex_unlock(&priv->mutex);
4857
4858         return count;
4859 }
4860
4861 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4862                    store_filter_flags);
4863
4864 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4865
4866 static ssize_t show_measurement(struct device *d,
4867                                 struct device_attribute *attr, char *buf)
4868 {
4869         struct iwl_priv *priv = dev_get_drvdata(d);
4870         struct iwl4965_spectrum_notification measure_report;
4871         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4872         u8 *data = (u8 *) & measure_report;
4873         unsigned long flags;
4874
4875         spin_lock_irqsave(&priv->lock, flags);
4876         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4877                 spin_unlock_irqrestore(&priv->lock, flags);
4878                 return 0;
4879         }
4880         memcpy(&measure_report, &priv->measure_report, size);
4881         priv->measurement_status = 0;
4882         spin_unlock_irqrestore(&priv->lock, flags);
4883
4884         while (size && (PAGE_SIZE - len)) {
4885                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4886                                    PAGE_SIZE - len, 1);
4887                 len = strlen(buf);
4888                 if (PAGE_SIZE - len)
4889                         buf[len++] = '\n';
4890
4891                 ofs += 16;
4892                 size -= min(size, 16U);
4893         }
4894
4895         return len;
4896 }
4897
4898 static ssize_t store_measurement(struct device *d,
4899                                  struct device_attribute *attr,
4900                                  const char *buf, size_t count)
4901 {
4902         struct iwl_priv *priv = dev_get_drvdata(d);
4903         struct ieee80211_measurement_params params = {
4904                 .channel = le16_to_cpu(priv->active_rxon.channel),
4905                 .start_time = cpu_to_le64(priv->last_tsf),
4906                 .duration = cpu_to_le16(1),
4907         };
4908         u8 type = IWL_MEASURE_BASIC;
4909         u8 buffer[32];
4910         u8 channel;
4911
4912         if (count) {
4913                 char *p = buffer;
4914                 strncpy(buffer, buf, min(sizeof(buffer), count));
4915                 channel = simple_strtoul(p, NULL, 0);
4916                 if (channel)
4917                         params.channel = channel;
4918
4919                 p = buffer;
4920                 while (*p && *p != ' ')
4921                         p++;
4922                 if (*p)
4923                         type = simple_strtoul(p + 1, NULL, 0);
4924         }
4925
4926         IWL_DEBUG_INFO("Invoking measurement of type %d on "
4927                        "channel %d (for '%s')\n", type, params.channel, buf);
4928         iwl4965_get_measurement(priv, &params, type);
4929
4930         return count;
4931 }
4932
4933 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4934                    show_measurement, store_measurement);
4935 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4936
4937 static ssize_t store_retry_rate(struct device *d,
4938                                 struct device_attribute *attr,
4939                                 const char *buf, size_t count)
4940 {
4941         struct iwl_priv *priv = dev_get_drvdata(d);
4942
4943         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4944         if (priv->retry_rate <= 0)
4945                 priv->retry_rate = 1;
4946
4947         return count;
4948 }
4949
4950 static ssize_t show_retry_rate(struct device *d,
4951                                struct device_attribute *attr, char *buf)
4952 {
4953         struct iwl_priv *priv = dev_get_drvdata(d);
4954         return sprintf(buf, "%d", priv->retry_rate);
4955 }
4956
4957 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4958                    store_retry_rate);
4959
4960 static ssize_t store_power_level(struct device *d,
4961                                  struct device_attribute *attr,
4962                                  const char *buf, size_t count)
4963 {
4964         struct iwl_priv *priv = dev_get_drvdata(d);
4965         int rc;
4966         int mode;
4967
4968         mode = simple_strtoul(buf, NULL, 0);
4969         mutex_lock(&priv->mutex);
4970
4971         if (!iwl_is_ready(priv)) {
4972                 rc = -EAGAIN;
4973                 goto out;
4974         }
4975
4976         rc = iwl_power_set_user_mode(priv, mode);
4977         if (rc) {
4978                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4979                 goto out;
4980         }
4981         rc = count;
4982
4983  out:
4984         mutex_unlock(&priv->mutex);
4985         return rc;
4986 }
4987
4988 #define MAX_WX_STRING 80
4989
4990 /* Values are in microsecond */
4991 static const s32 timeout_duration[] = {
4992         350000,
4993         250000,
4994         75000,
4995         37000,
4996         25000,
4997 };
4998 static const s32 period_duration[] = {
4999         400000,
5000         700000,
5001         1000000,
5002         1000000,
5003         1000000
5004 };
5005
5006 static ssize_t show_power_level(struct device *d,
5007                                 struct device_attribute *attr, char *buf)
5008 {
5009         struct iwl_priv *priv = dev_get_drvdata(d);
5010         int level = priv->power_data.power_mode;
5011         char *p = buf;
5012
5013         p += sprintf(p, "%d ", level);
5014         switch (level) {
5015         case IWL_POWER_MODE_CAM:
5016         case IWL_POWER_AC:
5017                 p += sprintf(p, "(AC)");
5018                 break;
5019         case IWL_POWER_BATTERY:
5020                 p += sprintf(p, "(BATTERY)");
5021                 break;
5022         default:
5023                 p += sprintf(p,
5024                              "(Timeout %dms, Period %dms)",
5025                              timeout_duration[level - 1] / 1000,
5026                              period_duration[level - 1] / 1000);
5027         }
5028 /*
5029         if (!(priv->power_mode & IWL_POWER_ENABLED))
5030                 p += sprintf(p, " OFF\n");
5031         else
5032                 p += sprintf(p, " \n");
5033 */
5034         p += sprintf(p, " \n");
5035         return (p - buf + 1);
5036 }
5037
5038 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5039                    store_power_level);
5040
5041 static ssize_t show_channels(struct device *d,
5042                              struct device_attribute *attr, char *buf)
5043 {
5044         /* all this shit doesn't belong into sysfs anyway */
5045         return 0;
5046 }
5047
5048 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5049
5050 static ssize_t show_statistics(struct device *d,
5051                                struct device_attribute *attr, char *buf)
5052 {
5053         struct iwl_priv *priv = dev_get_drvdata(d);
5054         u32 size = sizeof(struct iwl4965_notif_statistics);
5055         u32 len = 0, ofs = 0;
5056         u8 *data = (u8 *) & priv->statistics;
5057         int rc = 0;
5058
5059         if (!iwl_is_alive(priv))
5060                 return -EAGAIN;
5061
5062         mutex_lock(&priv->mutex);
5063         rc = iwl_send_statistics_request(priv, 0);
5064         mutex_unlock(&priv->mutex);
5065
5066         if (rc) {
5067                 len = sprintf(buf,
5068                               "Error sending statistics request: 0x%08X\n", rc);
5069                 return len;
5070         }
5071
5072         while (size && (PAGE_SIZE - len)) {
5073                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5074                                    PAGE_SIZE - len, 1);
5075                 len = strlen(buf);
5076                 if (PAGE_SIZE - len)
5077                         buf[len++] = '\n';
5078
5079                 ofs += 16;
5080                 size -= min(size, 16U);
5081         }
5082
5083         return len;
5084 }
5085
5086 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5087
5088 static ssize_t show_status(struct device *d,
5089                            struct device_attribute *attr, char *buf)
5090 {
5091         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5092         if (!iwl_is_alive(priv))
5093                 return -EAGAIN;
5094         return sprintf(buf, "0x%08x\n", (int)priv->status);
5095 }
5096
5097 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5098
5099 /*****************************************************************************
5100  *
5101  * driver setup and teardown
5102  *
5103  *****************************************************************************/
5104
5105 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5106 {
5107         priv->workqueue = create_workqueue(DRV_NAME);
5108
5109         init_waitqueue_head(&priv->wait_command_queue);
5110
5111         INIT_WORK(&priv->up, iwl4965_bg_up);
5112         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5113         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5114         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5115         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5116         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5117         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5118         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5119         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5120         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5121         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5122         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5123         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5124
5125         iwl4965_hw_setup_deferred_work(priv);
5126
5127         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5128                      iwl4965_irq_tasklet, (unsigned long)priv);
5129 }
5130
5131 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5132 {
5133         iwl4965_hw_cancel_deferred_work(priv);
5134
5135         cancel_delayed_work_sync(&priv->init_alive_start);
5136         cancel_delayed_work(&priv->scan_check);
5137         cancel_delayed_work(&priv->alive_start);
5138         cancel_delayed_work(&priv->post_associate);
5139         cancel_work_sync(&priv->beacon_update);
5140 }
5141
5142 static struct attribute *iwl4965_sysfs_entries[] = {
5143         &dev_attr_channels.attr,
5144         &dev_attr_flags.attr,
5145         &dev_attr_filter_flags.attr,
5146 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5147         &dev_attr_measurement.attr,
5148 #endif
5149         &dev_attr_power_level.attr,
5150         &dev_attr_retry_rate.attr,
5151         &dev_attr_rs_window.attr,
5152         &dev_attr_statistics.attr,
5153         &dev_attr_status.attr,
5154         &dev_attr_temperature.attr,
5155         &dev_attr_tx_power.attr,
5156 #ifdef CONFIG_IWLWIFI_DEBUG
5157         &dev_attr_debug_level.attr,
5158 #endif
5159         &dev_attr_version.attr,
5160
5161         NULL
5162 };
5163
5164 static struct attribute_group iwl4965_attribute_group = {
5165         .name = NULL,           /* put in device directory */
5166         .attrs = iwl4965_sysfs_entries,
5167 };
5168
5169 static struct ieee80211_ops iwl4965_hw_ops = {
5170         .tx = iwl4965_mac_tx,
5171         .start = iwl4965_mac_start,
5172         .stop = iwl4965_mac_stop,
5173         .add_interface = iwl4965_mac_add_interface,
5174         .remove_interface = iwl4965_mac_remove_interface,
5175         .config = iwl4965_mac_config,
5176         .config_interface = iwl4965_mac_config_interface,
5177         .configure_filter = iwl4965_configure_filter,
5178         .set_key = iwl4965_mac_set_key,
5179         .update_tkip_key = iwl4965_mac_update_tkip_key,
5180         .get_stats = iwl4965_mac_get_stats,
5181         .get_tx_stats = iwl4965_mac_get_tx_stats,
5182         .conf_tx = iwl4965_mac_conf_tx,
5183         .get_tsf = iwl4965_mac_get_tsf,
5184         .reset_tsf = iwl4965_mac_reset_tsf,
5185         .beacon_update = iwl4965_mac_beacon_update,
5186         .bss_info_changed = iwl4965_bss_info_changed,
5187 #ifdef CONFIG_IWL4965_HT
5188         .ampdu_action = iwl4965_mac_ampdu_action,
5189 #endif  /* CONFIG_IWL4965_HT */
5190         .hw_scan = iwl4965_mac_hw_scan
5191 };
5192
5193 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5194 {
5195         int err = 0;
5196         struct iwl_priv *priv;
5197         struct ieee80211_hw *hw;
5198         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5199         unsigned long flags;
5200         DECLARE_MAC_BUF(mac);
5201
5202         /************************
5203          * 1. Allocating HW data
5204          ************************/
5205
5206         /* Disabling hardware scan means that mac80211 will perform scans
5207          * "the hard way", rather than using device's scan. */
5208         if (cfg->mod_params->disable_hw_scan) {
5209                 if (cfg->mod_params->debug & IWL_DL_INFO)
5210                         dev_printk(KERN_DEBUG, &(pdev->dev),
5211                                    "Disabling hw_scan\n");
5212                 iwl4965_hw_ops.hw_scan = NULL;
5213         }
5214
5215         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5216         if (!hw) {
5217                 err = -ENOMEM;
5218                 goto out;
5219         }
5220         priv = hw->priv;
5221         /* At this point both hw and priv are allocated. */
5222
5223         SET_IEEE80211_DEV(hw, &pdev->dev);
5224
5225         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5226         priv->cfg = cfg;
5227         priv->pci_dev = pdev;
5228
5229 #ifdef CONFIG_IWLWIFI_DEBUG
5230         priv->debug_level = priv->cfg->mod_params->debug;
5231         atomic_set(&priv->restrict_refcnt, 0);
5232 #endif
5233
5234         /**************************
5235          * 2. Initializing PCI bus
5236          **************************/
5237         if (pci_enable_device(pdev)) {
5238                 err = -ENODEV;
5239                 goto out_ieee80211_free_hw;
5240         }
5241
5242         pci_set_master(pdev);
5243
5244         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5245         if (!err)
5246                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5247         if (err) {
5248                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5249                 if (!err)
5250                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5251                 /* both attempts failed: */
5252                 if (err) {
5253                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5254                                 DRV_NAME);
5255                         goto out_pci_disable_device;
5256                 }
5257         }
5258
5259         err = pci_request_regions(pdev, DRV_NAME);
5260         if (err)
5261                 goto out_pci_disable_device;
5262
5263         pci_set_drvdata(pdev, priv);
5264
5265         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5266          * PCI Tx retries from interfering with C3 CPU state */
5267         pci_write_config_byte(pdev, 0x41, 0x00);
5268
5269         /***********************
5270          * 3. Read REV register
5271          ***********************/
5272         priv->hw_base = pci_iomap(pdev, 0, 0);
5273         if (!priv->hw_base) {
5274                 err = -ENODEV;
5275                 goto out_pci_release_regions;
5276         }
5277
5278         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5279                 (unsigned long long) pci_resource_len(pdev, 0));
5280         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5281
5282         iwl_hw_detect(priv);
5283         printk(KERN_INFO DRV_NAME
5284                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5285                 priv->cfg->name, priv->hw_rev);
5286
5287         /* amp init */
5288         err = priv->cfg->ops->lib->apm_ops.init(priv);
5289         if (err < 0) {
5290                 IWL_DEBUG_INFO("Failed to init APMG\n");
5291                 goto out_iounmap;
5292         }
5293         /*****************
5294          * 4. Read EEPROM
5295          *****************/
5296         /* Read the EEPROM */
5297         err = iwl_eeprom_init(priv);
5298         if (err) {
5299                 IWL_ERROR("Unable to init EEPROM\n");
5300                 goto out_iounmap;
5301         }
5302         err = iwl_eeprom_check_version(priv);
5303         if (err)
5304                 goto out_iounmap;
5305
5306         /* extract MAC Address */
5307         iwl_eeprom_get_mac(priv, priv->mac_addr);
5308         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5309         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5310
5311         /************************
5312          * 5. Setup HW constants
5313          ************************/
5314         /* Device-specific setup */
5315         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5316                 IWL_ERROR("failed to set hw parameters\n");
5317                 goto out_free_eeprom;
5318         }
5319
5320         /*******************
5321          * 6. Setup priv
5322          *******************/
5323
5324         err = iwl_init_drv(priv);
5325         if (err)
5326                 goto out_free_eeprom;
5327         /* At this point both hw and priv are initialized. */
5328
5329         /**********************************
5330          * 7. Initialize module parameters
5331          **********************************/
5332
5333         /* Disable radio (SW RF KILL) via parameter when loading driver */
5334         if (priv->cfg->mod_params->disable) {
5335                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5336                 IWL_DEBUG_INFO("Radio disabled.\n");
5337         }
5338
5339         /********************
5340          * 8. Setup services
5341          ********************/
5342         spin_lock_irqsave(&priv->lock, flags);
5343         iwl4965_disable_interrupts(priv);
5344         spin_unlock_irqrestore(&priv->lock, flags);
5345
5346         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5347         if (err) {
5348                 IWL_ERROR("failed to create sysfs device attributes\n");
5349                 goto out_uninit_drv;
5350         }
5351
5352
5353         iwl4965_setup_deferred_work(priv);
5354         iwl4965_setup_rx_handlers(priv);
5355
5356         /********************
5357          * 9. Conclude
5358          ********************/
5359         pci_save_state(pdev);
5360         pci_disable_device(pdev);
5361
5362         /**********************************
5363          * 10. Setup and register mac80211
5364          **********************************/
5365
5366         err = iwl_setup_mac(priv);
5367         if (err)
5368                 goto out_remove_sysfs;
5369
5370         err = iwl_dbgfs_register(priv, DRV_NAME);
5371         if (err)
5372                 IWL_ERROR("failed to create debugfs files\n");
5373
5374         /* notify iwlcore to init */
5375         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5376         return 0;
5377
5378  out_remove_sysfs:
5379         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5380  out_uninit_drv:
5381         iwl_uninit_drv(priv);
5382  out_free_eeprom:
5383         iwl_eeprom_free(priv);
5384  out_iounmap:
5385         pci_iounmap(pdev, priv->hw_base);
5386  out_pci_release_regions:
5387         pci_release_regions(pdev);
5388         pci_set_drvdata(pdev, NULL);
5389  out_pci_disable_device:
5390         pci_disable_device(pdev);
5391  out_ieee80211_free_hw:
5392         ieee80211_free_hw(priv->hw);
5393  out:
5394         return err;
5395 }
5396
5397 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5398 {
5399         struct iwl_priv *priv = pci_get_drvdata(pdev);
5400         struct list_head *p, *q;
5401         int i;
5402         unsigned long flags;
5403
5404         if (!priv)
5405                 return;
5406
5407         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5408
5409         if (priv->mac80211_registered) {
5410                 ieee80211_unregister_hw(priv->hw);
5411                 priv->mac80211_registered = 0;
5412         }
5413
5414         set_bit(STATUS_EXIT_PENDING, &priv->status);
5415
5416         iwl4965_down(priv);
5417
5418         /* make sure we flush any pending irq or
5419          * tasklet for the driver
5420          */
5421         spin_lock_irqsave(&priv->lock, flags);
5422         iwl4965_disable_interrupts(priv);
5423         spin_unlock_irqrestore(&priv->lock, flags);
5424
5425         iwl_synchronize_irq(priv);
5426
5427         /* Free MAC hash list for ADHOC */
5428         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5429                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5430                         list_del(p);
5431                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5432                 }
5433         }
5434
5435         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5436         iwl_dbgfs_unregister(priv);
5437         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5438
5439         iwl4965_dealloc_ucode_pci(priv);
5440
5441         if (priv->rxq.bd)
5442                 iwl_rx_queue_free(priv, &priv->rxq);
5443         iwl_hw_txq_ctx_free(priv);
5444
5445         iwlcore_clear_stations_table(priv);
5446         iwl_eeprom_free(priv);
5447
5448
5449         /*netif_stop_queue(dev); */
5450         flush_workqueue(priv->workqueue);
5451
5452         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5453          * priv->workqueue... so we can't take down the workqueue
5454          * until now... */
5455         destroy_workqueue(priv->workqueue);
5456         priv->workqueue = NULL;
5457
5458         pci_iounmap(pdev, priv->hw_base);
5459         pci_release_regions(pdev);
5460         pci_disable_device(pdev);
5461         pci_set_drvdata(pdev, NULL);
5462
5463         iwl_uninit_drv(priv);
5464
5465         if (priv->ibss_beacon)
5466                 dev_kfree_skb(priv->ibss_beacon);
5467
5468         ieee80211_free_hw(priv->hw);
5469 }
5470
5471 #ifdef CONFIG_PM
5472
5473 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5474 {
5475         struct iwl_priv *priv = pci_get_drvdata(pdev);
5476
5477         if (priv->is_open) {
5478                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5479                 iwl4965_mac_stop(priv->hw);
5480                 priv->is_open = 1;
5481         }
5482
5483         pci_set_power_state(pdev, PCI_D3hot);
5484
5485         return 0;
5486 }
5487
5488 static int iwl4965_pci_resume(struct pci_dev *pdev)
5489 {
5490         struct iwl_priv *priv = pci_get_drvdata(pdev);
5491
5492         pci_set_power_state(pdev, PCI_D0);
5493
5494         if (priv->is_open)
5495                 iwl4965_mac_start(priv->hw);
5496
5497         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5498         return 0;
5499 }
5500
5501 #endif /* CONFIG_PM */
5502
5503 /*****************************************************************************
5504  *
5505  * driver and module entry point
5506  *
5507  *****************************************************************************/
5508
5509 /* Hardware specific file defines the PCI IDs table for that hardware module */
5510 static struct pci_device_id iwl_hw_card_ids[] = {
5511         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5512         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5513 #ifdef CONFIG_IWL5000
5514         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5515         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5516         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5517 #endif /* CONFIG_IWL5000 */
5518         {0}
5519 };
5520 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5521
5522 static struct pci_driver iwl_driver = {
5523         .name = DRV_NAME,
5524         .id_table = iwl_hw_card_ids,
5525         .probe = iwl4965_pci_probe,
5526         .remove = __devexit_p(iwl4965_pci_remove),
5527 #ifdef CONFIG_PM
5528         .suspend = iwl4965_pci_suspend,
5529         .resume = iwl4965_pci_resume,
5530 #endif
5531 };
5532
5533 static int __init iwl4965_init(void)
5534 {
5535
5536         int ret;
5537         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5538         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5539
5540         ret = iwl4965_rate_control_register();
5541         if (ret) {
5542                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5543                 return ret;
5544         }
5545
5546         ret = pci_register_driver(&iwl_driver);
5547         if (ret) {
5548                 IWL_ERROR("Unable to initialize PCI module\n");
5549                 goto error_register;
5550         }
5551
5552         return ret;
5553
5554 error_register:
5555         iwl4965_rate_control_unregister();
5556         return ret;
5557 }
5558
5559 static void __exit iwl4965_exit(void)
5560 {
5561         pci_unregister_driver(&iwl_driver);
5562         iwl4965_rate_control_unregister();
5563 }
5564
5565 module_exit(iwl4965_exit);
5566 module_init(iwl4965_init);