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 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 919
 920 static const char *iwl4965_get_tx_fail_reason(u32 status)
 921 {
 922         switch (status & TX_STATUS_MSK) {
 923         case TX_STATUS_SUCCESS:
 924                 return "SUCCESS";
 925                 TX_STATUS_ENTRY(SHORT_LIMIT);
 926                 TX_STATUS_ENTRY(LONG_LIMIT);
 927                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
 928                 TX_STATUS_ENTRY(MGMNT_ABORT);
 929                 TX_STATUS_ENTRY(NEXT_FRAG);
 930                 TX_STATUS_ENTRY(LIFE_EXPIRE);
 931                 TX_STATUS_ENTRY(DEST_PS);
 932                 TX_STATUS_ENTRY(ABORTED);
 933                 TX_STATUS_ENTRY(BT_RETRY);
 934                 TX_STATUS_ENTRY(STA_INVALID);
 935                 TX_STATUS_ENTRY(FRAG_DROPPED);
 936                 TX_STATUS_ENTRY(TID_DISABLE);
 937                 TX_STATUS_ENTRY(FRAME_FLUSHED);
 938                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
 939                 TX_STATUS_ENTRY(TX_LOCKED);
 940                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
 941         }
 942
 943         return "UNKNOWN";
 944 }
 945
 946 /**
 947  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 948  *
 949  * NOTE: priv->mutex is not required before calling this function
 950  */
 951 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 952 {
 953         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 954                 clear_bit(STATUS_SCANNING, &priv->status);
 955                 return 0;
 956         }
 957
 958         if (test_bit(STATUS_SCANNING, &priv->status)) {
 959                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 960                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
 961                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
 962                         queue_work(priv->workqueue, &priv->abort_scan);
 963
 964                 } else
 965                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
 966
 967                 return test_bit(STATUS_SCANNING, &priv->status);
 968         }
 969
 970         return 0;
 971 }
 972
 973 /**
 974  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
 975  * @ms: amount of time to wait (in milliseconds) for scan to abort
 976  *
 977  * NOTE: priv->mutex must be held before calling this function
 978  */
 979 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
 980 {
 981         unsigned long now = jiffies;
 982         int ret;
 983
 984         ret = iwl4965_scan_cancel(priv);
 985         if (ret && ms) {
 986                 mutex_unlock(&priv->mutex);
 987                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
 988                                 test_bit(STATUS_SCANNING, &priv->status))
 989                         msleep(1);
 990                 mutex_lock(&priv->mutex);
 991
 992                 return test_bit(STATUS_SCANNING, &priv->status);
 993         }
 994
 995         return ret;
 996 }
 997
 998 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 999 {
1000         /* Reset ieee stats */
1001
1002         /* We don't reset the net_device_stats (ieee->stats) on
1003          * re-association */
1004
1005         priv->last_seq_num = -1;
1006         priv->last_frag_num = -1;
1007         priv->last_packet_time = 0;
1008
1009         iwl4965_scan_cancel(priv);
1010 }
1011
1012 #define MAX_UCODE_BEACON_INTERVAL       4096
1013 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1014
1015 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1016 {
1017         u16 new_val = 0;
1018         u16 beacon_factor = 0;
1019
1020         beacon_factor =
1021             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1022                 / MAX_UCODE_BEACON_INTERVAL;
1023         new_val = beacon_val / beacon_factor;
1024
1025         return cpu_to_le16(new_val);
1026 }
1027
1028 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1029 {
1030         u64 interval_tm_unit;
1031         u64 tsf, result;
1032         unsigned long flags;
1033         struct ieee80211_conf *conf = NULL;
1034         u16 beacon_int = 0;
1035
1036         conf = ieee80211_get_hw_conf(priv->hw);
1037
1038         spin_lock_irqsave(&priv->lock, flags);
1039         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1040         priv->rxon_timing.timestamp.dw[0] =
1041                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1042
1043         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1044
1045         tsf = priv->timestamp;
1046
1047         beacon_int = priv->beacon_int;
1048         spin_unlock_irqrestore(&priv->lock, flags);
1049
1050         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1051                 if (beacon_int == 0) {
1052                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1053                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1054                 } else {
1055                         priv->rxon_timing.beacon_interval =
1056                                 cpu_to_le16(beacon_int);
1057                         priv->rxon_timing.beacon_interval =
1058                             iwl4965_adjust_beacon_interval(
1059                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1060                 }
1061
1062                 priv->rxon_timing.atim_window = 0;
1063         } else {
1064                 priv->rxon_timing.beacon_interval =
1065                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1066                 /* TODO: we need to get atim_window from upper stack
1067                  * for now we set to 0 */
1068                 priv->rxon_timing.atim_window = 0;
1069         }
1070
1071         interval_tm_unit =
1072                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1073         result = do_div(tsf, interval_tm_unit);
1074         priv->rxon_timing.beacon_init_val =
1075             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1076
1077         IWL_DEBUG_ASSOC
1078             ("beacon interval %d beacon timer %d beacon tim %d\n",
1079                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1080                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1081                 le16_to_cpu(priv->rxon_timing.atim_window));
1082 }
1083
1084 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1085 {
1086         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1087                 IWL_ERROR("APs don't scan.\n");
1088                 return 0;
1089         }
1090
1091         if (!iwl_is_ready_rf(priv)) {
1092                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1093                 return -EIO;
1094         }
1095
1096         if (test_bit(STATUS_SCANNING, &priv->status)) {
1097                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1098                 return -EAGAIN;
1099         }
1100
1101         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1102                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1103                                "Queuing.\n");
1104                 return -EAGAIN;
1105         }
1106
1107         IWL_DEBUG_INFO("Starting scan...\n");
1108         priv->scan_bands = 2;
1109         set_bit(STATUS_SCANNING, &priv->status);
1110         priv->scan_start = jiffies;
1111         priv->scan_pass_start = priv->scan_start;
1112
1113         queue_work(priv->workqueue, &priv->request_scan);
1114
1115         return 0;
1116 }
1117
1118
1119 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1120                                           enum ieee80211_band band)
1121 {
1122         if (band == IEEE80211_BAND_5GHZ) {
1123                 priv->staging_rxon.flags &=
1124                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1125                       | RXON_FLG_CCK_MSK);
1126                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1127         } else {
1128                 /* Copied from iwl4965_post_associate() */
1129                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1130                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1131                 else
1132                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1133
1134                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1135                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1136
1137                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1138                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1139                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1140         }
1141 }
1142
1143 /*
1144  * initialize rxon structure with default values from eeprom
1145  */
1146 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1147 {
1148         const struct iwl_channel_info *ch_info;
1149
1150         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1151
1152         switch (priv->iw_mode) {
1153         case IEEE80211_IF_TYPE_AP:
1154                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1155                 break;
1156
1157         case IEEE80211_IF_TYPE_STA:
1158                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1159                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1160                 break;
1161
1162         case IEEE80211_IF_TYPE_IBSS:
1163                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1164                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1165                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1166                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1167                 break;
1168
1169         case IEEE80211_IF_TYPE_MNTR:
1170                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1171                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1172                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1173                 break;
1174         default:
1175                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1176                 break;
1177         }
1178
1179 #if 0
1180         /* TODO:  Figure out when short_preamble would be set and cache from
1181          * that */
1182         if (!hw_to_local(priv->hw)->short_preamble)
1183                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1184         else
1185                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1186 #endif
1187
1188         ch_info = iwl_get_channel_info(priv, priv->band,
1189                                        le16_to_cpu(priv->staging_rxon.channel));
1190
1191         if (!ch_info)
1192                 ch_info = &priv->channel_info[0];
1193
1194         /*
1195          * in some case A channels are all non IBSS
1196          * in this case force B/G channel
1197          */
1198         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1199             !(is_channel_ibss(ch_info)))
1200                 ch_info = &priv->channel_info[0];
1201
1202         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1203         priv->band = ch_info->band;
1204
1205         iwl4965_set_flags_for_phymode(priv, priv->band);
1206
1207         priv->staging_rxon.ofdm_basic_rates =
1208             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1209         priv->staging_rxon.cck_basic_rates =
1210             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1211
1212         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1213                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1214         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1215         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1216         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1217         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1218         iwl_set_rxon_chain(priv);
1219 }
1220
1221 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1222 {
1223         if (mode == IEEE80211_IF_TYPE_IBSS) {
1224                 const struct iwl_channel_info *ch_info;
1225
1226                 ch_info = iwl_get_channel_info(priv,
1227                         priv->band,
1228                         le16_to_cpu(priv->staging_rxon.channel));
1229
1230                 if (!ch_info || !is_channel_ibss(ch_info)) {
1231                         IWL_ERROR("channel %d not IBSS channel\n",
1232                                   le16_to_cpu(priv->staging_rxon.channel));
1233                         return -EINVAL;
1234                 }
1235         }
1236
1237         priv->iw_mode = mode;
1238
1239         iwl4965_connection_init_rx_config(priv);
1240         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1241
1242         iwlcore_clear_stations_table(priv);
1243
1244         /* dont commit rxon if rf-kill is on*/
1245         if (!iwl_is_ready_rf(priv))
1246                 return -EAGAIN;
1247
1248         cancel_delayed_work(&priv->scan_check);
1249         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1250                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1251                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1252                 return -EAGAIN;
1253         }
1254
1255         iwl4965_commit_rxon(priv);
1256
1257         return 0;
1258 }
1259
1260 static void iwl4965_set_rate(struct iwl_priv *priv)
1261 {
1262         const struct ieee80211_supported_band *hw = NULL;
1263         struct ieee80211_rate *rate;
1264         int i;
1265
1266         hw = iwl_get_hw_mode(priv, priv->band);
1267         if (!hw) {
1268                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1269                 return;
1270         }
1271
1272         priv->active_rate = 0;
1273         priv->active_rate_basic = 0;
1274
1275         for (i = 0; i < hw->n_bitrates; i++) {
1276                 rate = &(hw->bitrates[i]);
1277                 if (rate->hw_value < IWL_RATE_COUNT)
1278                         priv->active_rate |= (1 << rate->hw_value);
1279         }
1280
1281         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1282                        priv->active_rate, priv->active_rate_basic);
1283
1284         /*
1285          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1286          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1287          * OFDM
1288          */
1289         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1290                 priv->staging_rxon.cck_basic_rates =
1291                     ((priv->active_rate_basic &
1292                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1293         else
1294                 priv->staging_rxon.cck_basic_rates =
1295                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1296
1297         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1298                 priv->staging_rxon.ofdm_basic_rates =
1299                     ((priv->active_rate_basic &
1300                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1301                       IWL_FIRST_OFDM_RATE) & 0xFF;
1302         else
1303                 priv->staging_rxon.ofdm_basic_rates =
1304                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1305 }
1306
1307 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1308 {
1309         unsigned long flags;
1310
1311         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1312                 return;
1313
1314         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1315                           disable_radio ? "OFF" : "ON");
1316
1317         if (disable_radio) {
1318                 iwl4965_scan_cancel(priv);
1319                 /* FIXME: This is a workaround for AP */
1320                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1321                         spin_lock_irqsave(&priv->lock, flags);
1322                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1323                                     CSR_UCODE_SW_BIT_RFKILL);
1324                         spin_unlock_irqrestore(&priv->lock, flags);
1325                         /* call the host command only if no hw rf-kill set */
1326                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1327                             iwl_is_ready(priv))
1328                                 iwl4965_send_card_state(priv,
1329                                                         CARD_STATE_CMD_DISABLE,
1330                                                         0);
1331                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1332
1333                         /* make sure mac80211 stop sending Tx frame */
1334                         if (priv->mac80211_registered)
1335                                 ieee80211_stop_queues(priv->hw);
1336                 }
1337                 return;
1338         }
1339
1340         spin_lock_irqsave(&priv->lock, flags);
1341         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1342
1343         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1344         spin_unlock_irqrestore(&priv->lock, flags);
1345
1346         /* wake up ucode */
1347         msleep(10);
1348
1349         spin_lock_irqsave(&priv->lock, flags);
1350         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1351         if (!iwl_grab_nic_access(priv))
1352                 iwl_release_nic_access(priv);
1353         spin_unlock_irqrestore(&priv->lock, flags);
1354
1355         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1356                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1357                                   "disabled by HW switch\n");
1358                 return;
1359         }
1360
1361         queue_work(priv->workqueue, &priv->restart);
1362         return;
1363 }
1364
1365 #define IWL_PACKET_RETRY_TIME HZ
1366
1367 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1368 {
1369         u16 sc = le16_to_cpu(header->seq_ctrl);
1370         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1371         u16 frag = sc & IEEE80211_SCTL_FRAG;
1372         u16 *last_seq, *last_frag;
1373         unsigned long *last_time;
1374
1375         switch (priv->iw_mode) {
1376         case IEEE80211_IF_TYPE_IBSS:{
1377                 struct list_head *p;
1378                 struct iwl4965_ibss_seq *entry = NULL;
1379                 u8 *mac = header->addr2;
1380                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1381
1382                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1383                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1384                         if (!compare_ether_addr(entry->mac, mac))
1385                                 break;
1386                 }
1387                 if (p == &priv->ibss_mac_hash[index]) {
1388                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1389                         if (!entry) {
1390                                 IWL_ERROR("Cannot malloc new mac entry\n");
1391                                 return 0;
1392                         }
1393                         memcpy(entry->mac, mac, ETH_ALEN);
1394                         entry->seq_num = seq;
1395                         entry->frag_num = frag;
1396                         entry->packet_time = jiffies;
1397                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1398                         return 0;
1399                 }
1400                 last_seq = &entry->seq_num;
1401                 last_frag = &entry->frag_num;
1402                 last_time = &entry->packet_time;
1403                 break;
1404         }
1405         case IEEE80211_IF_TYPE_STA:
1406                 last_seq = &priv->last_seq_num;
1407                 last_frag = &priv->last_frag_num;
1408                 last_time = &priv->last_packet_time;
1409                 break;
1410         default:
1411                 return 0;
1412         }
1413         if ((*last_seq == seq) &&
1414             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1415                 if (*last_frag == frag)
1416                         goto drop;
1417                 if (*last_frag + 1 != frag)
1418                         /* out-of-order fragment */
1419                         goto drop;
1420         } else
1421                 *last_seq = seq;
1422
1423         *last_frag = frag;
1424         *last_time = jiffies;
1425         return 0;
1426
1427  drop:
1428         return 1;
1429 }
1430
1431 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1432
1433 #include "iwl-spectrum.h"
1434
1435 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1436 #define BEACON_TIME_MASK_HIGH   0xFF000000
1437 #define TIME_UNIT               1024
1438
1439 /*
1440  * extended beacon time format
1441  * time in usec will be changed into a 32-bit value in 8:24 format
1442  * the high 1 byte is the beacon counts
1443  * the lower 3 bytes is the time in usec within one beacon interval
1444  */
1445
1446 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1447 {
1448         u32 quot;
1449         u32 rem;
1450         u32 interval = beacon_interval * 1024;
1451
1452         if (!interval || !usec)
1453                 return 0;
1454
1455         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1456         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1457
1458         return (quot << 24) + rem;
1459 }
1460
1461 /* base is usually what we get from ucode with each received frame,
1462  * the same as HW timer counter counting down
1463  */
1464
1465 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1466 {
1467         u32 base_low = base & BEACON_TIME_MASK_LOW;
1468         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1469         u32 interval = beacon_interval * TIME_UNIT;
1470         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1471             (addon & BEACON_TIME_MASK_HIGH);
1472
1473         if (base_low > addon_low)
1474                 res += base_low - addon_low;
1475         else if (base_low < addon_low) {
1476                 res += interval + base_low - addon_low;
1477                 res += (1 << 24);
1478         } else
1479                 res += (1 << 24);
1480
1481         return cpu_to_le32(res);
1482 }
1483
1484 static int iwl4965_get_measurement(struct iwl_priv *priv,
1485                                struct ieee80211_measurement_params *params,
1486                                u8 type)
1487 {
1488         struct iwl4965_spectrum_cmd spectrum;
1489         struct iwl_rx_packet *res;
1490         struct iwl_host_cmd cmd = {
1491                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1492                 .data = (void *)&spectrum,
1493                 .meta.flags = CMD_WANT_SKB,
1494         };
1495         u32 add_time = le64_to_cpu(params->start_time);
1496         int rc;
1497         int spectrum_resp_status;
1498         int duration = le16_to_cpu(params->duration);
1499
1500         if (iwl_is_associated(priv))
1501                 add_time =
1502                     iwl4965_usecs_to_beacons(
1503                         le64_to_cpu(params->start_time) - priv->last_tsf,
1504                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1505
1506         memset(&spectrum, 0, sizeof(spectrum));
1507
1508         spectrum.channel_count = cpu_to_le16(1);
1509         spectrum.flags =
1510             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1511         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1512         cmd.len = sizeof(spectrum);
1513         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1514
1515         if (iwl_is_associated(priv))
1516                 spectrum.start_time =
1517                     iwl4965_add_beacon_time(priv->last_beacon_time,
1518                                 add_time,
1519                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1520         else
1521                 spectrum.start_time = 0;
1522
1523         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1524         spectrum.channels[0].channel = params->channel;
1525         spectrum.channels[0].type = type;
1526         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1527                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1528                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1529
1530         rc = iwl_send_cmd_sync(priv, &cmd);
1531         if (rc)
1532                 return rc;
1533
1534         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1535         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1536                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1537                 rc = -EIO;
1538         }
1539
1540         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1541         switch (spectrum_resp_status) {
1542         case 0:         /* Command will be handled */
1543                 if (res->u.spectrum.id != 0xff) {
1544                         IWL_DEBUG_INFO
1545                             ("Replaced existing measurement: %d\n",
1546                              res->u.spectrum.id);
1547                         priv->measurement_status &= ~MEASUREMENT_READY;
1548                 }
1549                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1550                 rc = 0;
1551                 break;
1552
1553         case 1:         /* Command will not be handled */
1554                 rc = -EAGAIN;
1555                 break;
1556         }
1557
1558         dev_kfree_skb_any(cmd.meta.u.skb);
1559
1560         return rc;
1561 }
1562 #endif
1563
1564 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
1565                                      struct iwl_tx_info *tx_sta)
1566 {
1567         ieee80211_tx_status_irqsafe(priv->hw, tx_sta->skb[0]);
1568         tx_sta->skb[0] = NULL;
1569 }
1570
1571 /**
1572  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
1573  *
1574  * When FW advances 'R' index, all entries between old and new 'R' index
1575  * need to be reclaimed. As result, some free space forms.  If there is
1576  * enough free space (> low mark), wake the stack that feeds us.
1577  */
1578 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
1579 {
1580         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1581         struct iwl_queue *q = &txq->q;
1582         int nfreed = 0;
1583
1584         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1585                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1586                           "is out of range [0-%d] %d %d.\n", txq_id,
1587                           index, q->n_bd, q->write_ptr, q->read_ptr);
1588                 return 0;
1589         }
1590
1591         for (index = iwl_queue_inc_wrap(index, q->n_bd);
1592                 q->read_ptr != index;
1593                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1594                 if (txq_id != IWL_CMD_QUEUE_NUM) {
1595                         iwl4965_txstatus_to_ieee(priv,
1596                                         &(txq->txb[txq->q.read_ptr]));
1597                         iwl_hw_txq_free_tfd(priv, txq);
1598                 } else if (nfreed > 1) {
1599                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
1600                                         q->write_ptr, q->read_ptr);
1601                         queue_work(priv->workqueue, &priv->restart);
1602                 }
1603                 nfreed++;
1604         }
1605
1606         return nfreed;
1607 }
1608
1609 static int iwl4965_is_tx_success(u32 status)
1610 {
1611         status &= TX_STATUS_MSK;
1612         return (status == TX_STATUS_SUCCESS)
1613             || (status == TX_STATUS_DIRECT_DONE);
1614 }
1615
1616 /******************************************************************************
1617  *
1618  * Generic RX handler implementations
1619  *
1620  ******************************************************************************/
1621 #ifdef CONFIG_IWL4965_HT
1622
1623 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
1624                                     struct ieee80211_hdr *hdr)
1625 {
1626         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
1627                 return IWL_AP_ID;
1628         else {
1629                 u8 *da = ieee80211_get_DA(hdr);
1630                 return iwl_find_station(priv, da);
1631         }
1632 }
1633
1634 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
1635         struct iwl_priv *priv, int txq_id, int idx)
1636 {
1637         if (priv->txq[txq_id].txb[idx].skb[0])
1638                 return (struct ieee80211_hdr *)priv->txq[txq_id].
1639                                 txb[idx].skb[0]->data;
1640         return NULL;
1641 }
1642
1643 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1644 {
1645         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
1646                                 tx_resp->frame_count);
1647         return le32_to_cpu(*scd_ssn) & MAX_SN;
1648
1649 }
1650
1651 /**
1652  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
1653  */
1654 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1655                                       struct iwl_ht_agg *agg,
1656                                       struct iwl4965_tx_resp_agg *tx_resp,
1657                                       u16 start_idx)
1658 {
1659         u16 status;
1660         struct agg_tx_status *frame_status = &tx_resp->status;
1661         struct ieee80211_tx_info *info = NULL;
1662         struct ieee80211_hdr *hdr = NULL;
1663         int i, sh;
1664         int txq_id, idx;
1665         u16 seq;
1666
1667         if (agg->wait_for_ba)
1668                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
1669
1670         agg->frame_count = tx_resp->frame_count;
1671         agg->start_idx = start_idx;
1672         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1673         agg->bitmap = 0;
1674
1675         /* # frames attempted by Tx command */
1676         if (agg->frame_count == 1) {
1677                 /* Only one frame was attempted; no block-ack will arrive */
1678                 status = le16_to_cpu(frame_status[0].status);
1679                 seq  = le16_to_cpu(frame_status[0].sequence);
1680                 idx = SEQ_TO_INDEX(seq);
1681                 txq_id = SEQ_TO_QUEUE(seq);
1682
1683                 /* FIXME: code repetition */
1684                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1685                                    agg->frame_count, agg->start_idx, idx);
1686
1687                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1688                 info->status.retry_count = tx_resp->failure_frame;
1689                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1690                 info->flags |= iwl4965_is_tx_success(status)?
1691                         IEEE80211_TX_STAT_ACK : 0;
1692                 iwl4965_hwrate_to_tx_control(priv,
1693                                              le32_to_cpu(tx_resp->rate_n_flags),
1694                                              info);
1695                 /* FIXME: code repetition end */
1696
1697                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1698                                     status & 0xff, tx_resp->failure_frame);
1699                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
1700                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
1701
1702                 agg->wait_for_ba = 0;
1703         } else {
1704                 /* Two or more frames were attempted; expect block-ack */
1705                 u64 bitmap = 0;
1706                 int start = agg->start_idx;
1707
1708                 /* Construct bit-map of pending frames within Tx window */
1709                 for (i = 0; i < agg->frame_count; i++) {
1710                         u16 sc;
1711                         status = le16_to_cpu(frame_status[i].status);
1712                         seq  = le16_to_cpu(frame_status[i].sequence);
1713                         idx = SEQ_TO_INDEX(seq);
1714                         txq_id = SEQ_TO_QUEUE(seq);
1715
1716                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1717                                       AGG_TX_STATE_ABORT_MSK))
1718                                 continue;
1719
1720                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1721                                            agg->frame_count, txq_id, idx);
1722
1723                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
1724
1725                         sc = le16_to_cpu(hdr->seq_ctrl);
1726                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1727                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
1728                                           " idx=%d, seq_idx=%d, seq=%d\n",
1729                                           idx, SEQ_TO_SN(sc),
1730                                           hdr->seq_ctrl);
1731                                 return -1;
1732                         }
1733
1734                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1735                                            i, idx, SEQ_TO_SN(sc));
1736
1737                         sh = idx - start;
1738                         if (sh > 64) {
1739                                 sh = (start - idx) + 0xff;
1740                                 bitmap = bitmap << sh;
1741                                 sh = 0;
1742                                 start = idx;
1743                         } else if (sh < -64)
1744                                 sh  = 0xff - (start - idx);
1745                         else if (sh < 0) {
1746                                 sh = start - idx;
1747                                 start = idx;
1748                                 bitmap = bitmap << sh;
1749                                 sh = 0;
1750                         }
1751                         bitmap |= (1 << sh);
1752                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1753                                            start, (u32)(bitmap & 0xFFFFFFFF));
1754                 }
1755
1756                 agg->bitmap = bitmap;
1757                 agg->start_idx = start;
1758                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1759                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1760                                    agg->frame_count, agg->start_idx,
1761                                    (unsigned long long)agg->bitmap);
1762
1763                 if (bitmap)
1764                         agg->wait_for_ba = 1;
1765         }
1766         return 0;
1767 }
1768 #endif
1769
1770 /**
1771  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1772  */
1773 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1774                                 struct iwl_rx_mem_buffer *rxb)
1775 {
1776         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1777         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1778         int txq_id = SEQ_TO_QUEUE(sequence);
1779         int index = SEQ_TO_INDEX(sequence);
1780         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1781         struct ieee80211_tx_info *info;
1782         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1783         u32  status = le32_to_cpu(tx_resp->status);
1784 #ifdef CONFIG_IWL4965_HT
1785         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
1786         u16 fc;
1787         struct ieee80211_hdr *hdr;
1788         u8 *qc = NULL;
1789 #endif
1790
1791         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1792                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1793                           "is out of range [0-%d] %d %d\n", txq_id,
1794                           index, txq->q.n_bd, txq->q.write_ptr,
1795                           txq->q.read_ptr);
1796                 return;
1797         }
1798
1799         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1800         memset(&info->status, 0, sizeof(info->status));
1801
1802 #ifdef CONFIG_IWL4965_HT
1803         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
1804         fc = le16_to_cpu(hdr->frame_control);
1805         if (ieee80211_is_qos_data(fc)) {
1806                 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
1807                 tid = qc[0] & 0xf;
1808         }
1809
1810         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
1811         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1812                 IWL_ERROR("Station not known\n");
1813                 return;
1814         }
1815
1816         if (txq->sched_retry) {
1817                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
1818                 struct iwl_ht_agg *agg = NULL;
1819
1820                 if (!qc)
1821                         return;
1822
1823                 agg = &priv->stations[sta_id].tid[tid].agg;
1824
1825                 iwl4965_tx_status_reply_tx(priv, agg,
1826                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
1827
1828                 if ((tx_resp->frame_count == 1) &&
1829                     !iwl4965_is_tx_success(status)) {
1830                         /* TODO: send BAR */
1831                 }
1832
1833                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1834                         int freed, ampdu_q;
1835                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1836                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1837                                            "%d index %d\n", scd_ssn , index);
1838                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1839                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1840
1841                         if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1842                             txq_id >= 0 && priv->mac80211_registered &&
1843                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1844                                 /* calculate mac80211 ampdu sw queue to wake */
1845                                 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
1846                                           priv->hw->queues;
1847                                 if (agg->state == IWL_AGG_OFF)
1848                                         ieee80211_wake_queue(priv->hw, txq_id);
1849                                 else
1850                                         ieee80211_wake_queue(priv->hw, ampdu_q);
1851                         }
1852                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1853                 }
1854         } else {
1855 #endif /* CONFIG_IWL4965_HT */
1856
1857         info->status.retry_count = tx_resp->failure_frame;
1858         info->flags |=
1859             iwl4965_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
1860         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
1861                                      info);
1862
1863         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
1864                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
1865                      status, le32_to_cpu(tx_resp->rate_n_flags),
1866                      tx_resp->failure_frame);
1867
1868         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
1869 #ifdef CONFIG_IWL4965_HT
1870         if (index != -1) {
1871                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1872                 if (tid != MAX_TID_COUNT)
1873                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1874                 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1875                         (txq_id >= 0) && priv->mac80211_registered)
1876                         ieee80211_wake_queue(priv->hw, txq_id);
1877                 if (tid != MAX_TID_COUNT)
1878                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1879         }
1880         }
1881 #endif /* CONFIG_IWL4965_HT */
1882
1883         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1884                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
1885 }
1886
1887
1888 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1889                                 struct iwl_rx_mem_buffer *rxb)
1890 {
1891         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1892         struct iwl_alive_resp *palive;
1893         struct delayed_work *pwork;
1894
1895         palive = &pkt->u.alive_frame;
1896
1897         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1898                        "0x%01X 0x%01X\n",
1899                        palive->is_valid, palive->ver_type,
1900                        palive->ver_subtype);
1901
1902         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1903                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1904                 memcpy(&priv->card_alive_init,
1905                        &pkt->u.alive_frame,
1906                        sizeof(struct iwl_init_alive_resp));
1907                 pwork = &priv->init_alive_start;
1908         } else {
1909                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1910                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1911                        sizeof(struct iwl_alive_resp));
1912                 pwork = &priv->alive_start;
1913         }
1914
1915         /* We delay the ALIVE response by 5ms to
1916          * give the HW RF Kill time to activate... */
1917         if (palive->is_valid == UCODE_VALID_OK)
1918                 queue_delayed_work(priv->workqueue, pwork,
1919                                    msecs_to_jiffies(5));
1920         else
1921                 IWL_WARNING("uCode did not respond OK.\n");
1922 }
1923
1924 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
1925                                      struct iwl_rx_mem_buffer *rxb)
1926 {
1927         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1928
1929         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1930         return;
1931 }
1932
1933 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1934                                    struct iwl_rx_mem_buffer *rxb)
1935 {
1936         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1937
1938         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1939                 "seq 0x%04X ser 0x%08X\n",
1940                 le32_to_cpu(pkt->u.err_resp.error_type),
1941                 get_cmd_string(pkt->u.err_resp.cmd_id),
1942                 pkt->u.err_resp.cmd_id,
1943                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1944                 le32_to_cpu(pkt->u.err_resp.error_info));
1945 }
1946
1947 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1948
1949 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1950 {
1951         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1952         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1953         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1954         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1955                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1956         rxon->channel = csa->channel;
1957         priv->staging_rxon.channel = csa->channel;
1958 }
1959
1960 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1961                                           struct iwl_rx_mem_buffer *rxb)
1962 {
1963 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1964         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1965         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1966
1967         if (!report->state) {
1968                 IWL_DEBUG(IWL_DL_11H,
1969                         "Spectrum Measure Notification: Start\n");
1970                 return;
1971         }
1972
1973         memcpy(&priv->measure_report, report, sizeof(*report));
1974         priv->measurement_status |= MEASUREMENT_READY;
1975 #endif
1976 }
1977
1978 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1979                                       struct iwl_rx_mem_buffer *rxb)
1980 {
1981 #ifdef CONFIG_IWLWIFI_DEBUG
1982         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1983         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1984         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1985                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1986 #endif
1987 }
1988
1989 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1990                                              struct iwl_rx_mem_buffer *rxb)
1991 {
1992         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1993         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1994                         "notification for %s:\n",
1995                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1996         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1997 }
1998
1999 static void iwl4965_bg_beacon_update(struct work_struct *work)
2000 {
2001         struct iwl_priv *priv =
2002                 container_of(work, struct iwl_priv, beacon_update);
2003         struct sk_buff *beacon;
2004
2005         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2006         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2007
2008         if (!beacon) {
2009                 IWL_ERROR("update beacon failed\n");
2010                 return;
2011         }
2012
2013         mutex_lock(&priv->mutex);
2014         /* new beacon skb is allocated every time; dispose previous.*/
2015         if (priv->ibss_beacon)
2016                 dev_kfree_skb(priv->ibss_beacon);
2017
2018         priv->ibss_beacon = beacon;
2019         mutex_unlock(&priv->mutex);
2020
2021         iwl4965_send_beacon_cmd(priv);
2022 }
2023
2024 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2025                                 struct iwl_rx_mem_buffer *rxb)
2026 {
2027 #ifdef CONFIG_IWLWIFI_DEBUG
2028         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2029         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2030         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2031
2032         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2033                 "tsf %d %d rate %d\n",
2034                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2035                 beacon->beacon_notify_hdr.failure_frame,
2036                 le32_to_cpu(beacon->ibss_mgr_status),
2037                 le32_to_cpu(beacon->high_tsf),
2038                 le32_to_cpu(beacon->low_tsf), rate);
2039 #endif
2040
2041         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2042             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2043                 queue_work(priv->workqueue, &priv->beacon_update);
2044 }
2045
2046 /* Service response to REPLY_SCAN_CMD (0x80) */
2047 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2048                               struct iwl_rx_mem_buffer *rxb)
2049 {
2050 #ifdef CONFIG_IWLWIFI_DEBUG
2051         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2052         struct iwl4965_scanreq_notification *notif =
2053             (struct iwl4965_scanreq_notification *)pkt->u.raw;
2054
2055         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2056 #endif
2057 }
2058
2059 /* Service SCAN_START_NOTIFICATION (0x82) */
2060 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2061                                     struct iwl_rx_mem_buffer *rxb)
2062 {
2063         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2064         struct iwl4965_scanstart_notification *notif =
2065             (struct iwl4965_scanstart_notification *)pkt->u.raw;
2066         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2067         IWL_DEBUG_SCAN("Scan start: "
2068                        "%d [802.11%s] "
2069                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2070                        notif->channel,
2071                        notif->band ? "bg" : "a",
2072                        notif->tsf_high,
2073                        notif->tsf_low, notif->status, notif->beacon_timer);
2074 }
2075
2076 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2077 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2078                                       struct iwl_rx_mem_buffer *rxb)
2079 {
2080         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2081         struct iwl4965_scanresults_notification *notif =
2082             (struct iwl4965_scanresults_notification *)pkt->u.raw;
2083
2084         IWL_DEBUG_SCAN("Scan ch.res: "
2085                        "%d [802.11%s] "
2086                        "(TSF: 0x%08X:%08X) - %d "
2087                        "elapsed=%lu usec (%dms since last)\n",
2088                        notif->channel,
2089                        notif->band ? "bg" : "a",
2090                        le32_to_cpu(notif->tsf_high),
2091                        le32_to_cpu(notif->tsf_low),
2092                        le32_to_cpu(notif->statistics[0]),
2093                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2094                        jiffies_to_msecs(elapsed_jiffies
2095                                         (priv->last_scan_jiffies, jiffies)));
2096
2097         priv->last_scan_jiffies = jiffies;
2098         priv->next_scan_jiffies = 0;
2099 }
2100
2101 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2102 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2103                                        struct iwl_rx_mem_buffer *rxb)
2104 {
2105         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2106         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2107
2108         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2109                        scan_notif->scanned_channels,
2110                        scan_notif->tsf_low,
2111                        scan_notif->tsf_high, scan_notif->status);
2112
2113         /* The HW is no longer scanning */
2114         clear_bit(STATUS_SCAN_HW, &priv->status);
2115
2116         /* The scan completion notification came in, so kill that timer... */
2117         cancel_delayed_work(&priv->scan_check);
2118
2119         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2120                        (priv->scan_bands == 2) ? "2.4" : "5.2",
2121                        jiffies_to_msecs(elapsed_jiffies
2122                                         (priv->scan_pass_start, jiffies)));
2123
2124         /* Remove this scanned band from the list
2125          * of pending bands to scan */
2126         priv->scan_bands--;
2127
2128         /* If a request to abort was given, or the scan did not succeed
2129          * then we reset the scan state machine and terminate,
2130          * re-queuing another scan if one has been requested */
2131         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2132                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2133                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2134         } else {
2135                 /* If there are more bands on this scan pass reschedule */
2136                 if (priv->scan_bands > 0)
2137                         goto reschedule;
2138         }
2139
2140         priv->last_scan_jiffies = jiffies;
2141         priv->next_scan_jiffies = 0;
2142         IWL_DEBUG_INFO("Setting scan to off\n");
2143
2144         clear_bit(STATUS_SCANNING, &priv->status);
2145
2146         IWL_DEBUG_INFO("Scan took %dms\n",
2147                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2148
2149         queue_work(priv->workqueue, &priv->scan_completed);
2150
2151         return;
2152
2153 reschedule:
2154         priv->scan_pass_start = jiffies;
2155         queue_work(priv->workqueue, &priv->request_scan);
2156 }
2157
2158 /* Handle notification from uCode that card's power state is changing
2159  * due to software, hardware, or critical temperature RFKILL */
2160 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2161                                     struct iwl_rx_mem_buffer *rxb)
2162 {
2163         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2164         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2165         unsigned long status = priv->status;
2166
2167         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2168                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2169                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2170
2171         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2172                      RF_CARD_DISABLED)) {
2173
2174                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2175                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2176
2177                 if (!iwl_grab_nic_access(priv)) {
2178                         iwl_write_direct32(
2179                                 priv, HBUS_TARG_MBX_C,
2180                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2181
2182                         iwl_release_nic_access(priv);
2183                 }
2184
2185                 if (!(flags & RXON_CARD_DISABLED)) {
2186                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2187                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2188                         if (!iwl_grab_nic_access(priv)) {
2189                                 iwl_write_direct32(
2190                                         priv, HBUS_TARG_MBX_C,
2191                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2192
2193                                 iwl_release_nic_access(priv);
2194                         }
2195                 }
2196
2197                 if (flags & RF_CARD_DISABLED) {
2198                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2199                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2200                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2201                         if (!iwl_grab_nic_access(priv))
2202                                 iwl_release_nic_access(priv);
2203                 }
2204         }
2205
2206         if (flags & HW_CARD_DISABLED)
2207                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2208         else
2209                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2210
2211
2212         if (flags & SW_CARD_DISABLED)
2213                 set_bit(STATUS_RF_KILL_SW, &priv->status);
2214         else
2215                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2216
2217         if (!(flags & RXON_CARD_DISABLED))
2218                 iwl4965_scan_cancel(priv);
2219
2220         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2221              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2222             (test_bit(STATUS_RF_KILL_SW, &status) !=
2223              test_bit(STATUS_RF_KILL_SW, &priv->status)))
2224                 queue_work(priv->workqueue, &priv->rf_kill);
2225         else
2226                 wake_up_interruptible(&priv->wait_command_queue);
2227 }
2228
2229 /**
2230  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2231  *
2232  * Setup the RX handlers for each of the reply types sent from the uCode
2233  * to the host.
2234  *
2235  * This function chains into the hardware specific files for them to setup
2236  * any hardware specific handlers as well.
2237  */
2238 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2239 {
2240         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
2241         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2242         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2243         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2244         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2245             iwl4965_rx_spectrum_measure_notif;
2246         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2247         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2248             iwl4965_rx_pm_debug_statistics_notif;
2249         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
2250
2251         /*
2252          * The same handler is used for both the REPLY to a discrete
2253          * statistics request from the host as well as for the periodic
2254          * statistics notifications (after received beacons) from the uCode.
2255          */
2256         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2257         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
2258
2259         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2260         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
2261         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2262             iwl4965_rx_scan_results_notif;
2263         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2264             iwl4965_rx_scan_complete_notif;
2265         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2266         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2267
2268         /* Set up hardware specific Rx handlers */
2269         priv->cfg->ops->lib->rx_handler_setup(priv);
2270 }
2271
2272 /**
2273  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2274  * @rxb: Rx buffer to reclaim
2275  *
2276  * If an Rx buffer has an async callback associated with it the callback
2277  * will be executed.  The attached skb (if present) will only be freed
2278  * if the callback returns 1
2279  */
2280 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
2281                                     struct iwl_rx_mem_buffer *rxb)
2282 {
2283         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2284         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2285         int txq_id = SEQ_TO_QUEUE(sequence);
2286         int index = SEQ_TO_INDEX(sequence);
2287         int huge = sequence & SEQ_HUGE_FRAME;
2288         int cmd_index;
2289         struct iwl_cmd *cmd;
2290
2291         /* If a Tx command is being handled and it isn't in the actual
2292          * command queue then there a command routing bug has been introduced
2293          * in the queue management code. */
2294         if (txq_id != IWL_CMD_QUEUE_NUM)
2295                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2296                           txq_id, pkt->hdr.cmd);
2297         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2298
2299         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2300         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2301
2302         /* Input error checking is done when commands are added to queue. */
2303         if (cmd->meta.flags & CMD_WANT_SKB) {
2304                 cmd->meta.source->u.skb = rxb->skb;
2305                 rxb->skb = NULL;
2306         } else if (cmd->meta.u.callback &&
2307                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
2308                 rxb->skb = NULL;
2309
2310         iwl4965_tx_queue_reclaim(priv, txq_id, index);
2311
2312         if (!(cmd->meta.flags & CMD_ASYNC)) {
2313                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2314                 wake_up_interruptible(&priv->wait_command_queue);
2315         }
2316 }
2317
2318 /*
2319  * this should be called while priv->lock is locked
2320 */
2321 static void __iwl_rx_replenish(struct iwl_priv *priv)
2322 {
2323         iwl_rx_allocate(priv);
2324         iwl_rx_queue_restock(priv);
2325 }
2326
2327
2328 /**
2329  * iwl_rx_handle - Main entry function for receiving responses from uCode
2330  *
2331  * Uses the priv->rx_handlers callback function array to invoke
2332  * the appropriate handlers, including command responses,
2333  * frame-received notifications, and other notifications.
2334  */
2335 void iwl_rx_handle(struct iwl_priv *priv)
2336 {
2337         struct iwl_rx_mem_buffer *rxb;
2338         struct iwl_rx_packet *pkt;
2339         struct iwl_rx_queue *rxq = &priv->rxq;
2340         u32 r, i;
2341         int reclaim;
2342         unsigned long flags;
2343         u8 fill_rx = 0;
2344         u32 count = 8;
2345
2346         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2347          * buffer that the driver may process (last buffer filled by ucode). */
2348         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2349         i = rxq->read;
2350
2351         /* Rx interrupt, but nothing sent from uCode */
2352         if (i == r)
2353                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2354
2355         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2356                 fill_rx = 1;
2357
2358         while (i != r) {
2359                 rxb = rxq->queue[i];
2360
2361                 /* If an RXB doesn't have a Rx queue slot associated with it,
2362                  * then a bug has been introduced in the queue refilling
2363                  * routines -- catch it here */
2364                 BUG_ON(rxb == NULL);
2365
2366                 rxq->queue[i] = NULL;
2367
2368                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2369                                             priv->hw_params.rx_buf_size,
2370                                             PCI_DMA_FROMDEVICE);
2371                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2372
2373                 /* Reclaim a command buffer only if this packet is a response
2374                  *   to a (driver-originated) command.
2375                  * If the packet (e.g. Rx frame) originated from uCode,
2376                  *   there is no command buffer to reclaim.
2377                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2378                  *   but apparently a few don't get set; catch them here. */
2379                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2380                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2381                         (pkt->hdr.cmd != REPLY_RX) &&
2382                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2383                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2384                         (pkt->hdr.cmd != REPLY_TX);
2385
2386                 /* Based on type of command response or notification,
2387                  *   handle those that need handling via function in
2388                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
2389                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2390                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2391                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2392                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2393                 } else {
2394                         /* No handling needed */
2395                         IWL_DEBUG(IWL_DL_RX,
2396                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2397                                 r, i, get_cmd_string(pkt->hdr.cmd),
2398                                 pkt->hdr.cmd);
2399                 }
2400
2401                 if (reclaim) {
2402                         /* Invoke any callbacks, transfer the skb to caller, and
2403                          * fire off the (possibly) blocking iwl_send_cmd()
2404                          * as we reclaim the driver command queue */
2405                         if (rxb && rxb->skb)
2406                                 iwl4965_tx_cmd_complete(priv, rxb);
2407                         else
2408                                 IWL_WARNING("Claim null rxb?\n");
2409                 }
2410
2411                 /* For now we just don't re-use anything.  We can tweak this
2412                  * later to try and re-use notification packets and SKBs that
2413                  * fail to Rx correctly */
2414                 if (rxb->skb != NULL) {
2415                         priv->alloc_rxb_skb--;
2416                         dev_kfree_skb_any(rxb->skb);
2417                         rxb->skb = NULL;
2418                 }
2419
2420                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2421                                  priv->hw_params.rx_buf_size,
2422                                  PCI_DMA_FROMDEVICE);
2423                 spin_lock_irqsave(&rxq->lock, flags);
2424                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2425                 spin_unlock_irqrestore(&rxq->lock, flags);
2426                 i = (i + 1) & RX_QUEUE_MASK;
2427                 /* If there are a lot of unused frames,
2428                  * restock the Rx queue so ucode wont assert. */
2429                 if (fill_rx) {
2430                         count++;
2431                         if (count >= 8) {
2432                                 priv->rxq.read = i;
2433                                 __iwl_rx_replenish(priv);
2434                                 count = 0;
2435                         }
2436                 }
2437         }
2438
2439         /* Backtrack one entry */
2440         priv->rxq.read = i;
2441         iwl_rx_queue_restock(priv);
2442 }
2443 /* Convert linear signal-to-noise ratio into dB */
2444 static u8 ratio2dB[100] = {
2445 /*       0   1   2   3   4   5   6   7   8   9 */
2446          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2447         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2448         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2449         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2450         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2451         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2452         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2453         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2454         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2455         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2456 };
2457
2458 /* Calculates a relative dB value from a ratio of linear
2459  *   (i.e. not dB) signal levels.
2460  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2461 int iwl4965_calc_db_from_ratio(int sig_ratio)
2462 {
2463         /* 1000:1 or higher just report as 60 dB */
2464         if (sig_ratio >= 1000)
2465                 return 60;
2466
2467         /* 100:1 or higher, divide by 10 and use table,
2468          *   add 20 dB to make up for divide by 10 */
2469         if (sig_ratio >= 100)
2470                 return (20 + (int)ratio2dB[sig_ratio/10]);
2471
2472         /* We shouldn't see this */
2473         if (sig_ratio < 1)
2474                 return 0;
2475
2476         /* Use table for ratios 1:1 - 99:1 */
2477         return (int)ratio2dB[sig_ratio];
2478 }
2479
2480 #define PERFECT_RSSI (-20) /* dBm */
2481 #define WORST_RSSI (-95)   /* dBm */
2482 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2483
2484 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2485  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2486  *   about formulas used below. */
2487 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2488 {
2489         int sig_qual;
2490         int degradation = PERFECT_RSSI - rssi_dbm;
2491
2492         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2493          * as indicator; formula is (signal dbm - noise dbm).
2494          * SNR at or above 40 is a great signal (100%).
2495          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2496          * Weakest usable signal is usually 10 - 15 dB SNR. */
2497         if (noise_dbm) {
2498                 if (rssi_dbm - noise_dbm >= 40)
2499                         return 100;
2500                 else if (rssi_dbm < noise_dbm)
2501                         return 0;
2502                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2503
2504         /* Else use just the signal level.
2505          * This formula is a least squares fit of data points collected and
2506          *   compared with a reference system that had a percentage (%) display
2507          *   for signal quality. */
2508         } else
2509                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2510                             (15 * RSSI_RANGE + 62 * degradation)) /
2511                            (RSSI_RANGE * RSSI_RANGE);
2512
2513         if (sig_qual > 100)
2514                 sig_qual = 100;
2515         else if (sig_qual < 1)
2516                 sig_qual = 0;
2517
2518         return sig_qual;
2519 }
2520
2521 #ifdef CONFIG_IWLWIFI_DEBUG
2522 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2523 {
2524         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2525         DECLARE_MAC_BUF(mac);
2526
2527         IWL_DEBUG_RADIO("RX CONFIG:\n");
2528         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2529         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2530         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2531         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2532                         le32_to_cpu(rxon->filter_flags));
2533         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2534         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2535                         rxon->ofdm_basic_rates);
2536         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2537         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2538                         print_mac(mac, rxon->node_addr));
2539         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2540                         print_mac(mac, rxon->bssid_addr));
2541         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2542 }
2543 #endif
2544
2545 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2546 {
2547         IWL_DEBUG_ISR("Enabling interrupts\n");
2548         set_bit(STATUS_INT_ENABLED, &priv->status);
2549         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2550 }
2551
2552 /* call this function to flush any scheduled tasklet */
2553 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2554 {
2555         /* wait to make sure we flush pedding tasklet*/
2556         synchronize_irq(priv->pci_dev->irq);
2557         tasklet_kill(&priv->irq_tasklet);
2558 }
2559
2560 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2561 {
2562         clear_bit(STATUS_INT_ENABLED, &priv->status);
2563
2564         /* disable interrupts from uCode/NIC to host */
2565         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2566
2567         /* acknowledge/clear/reset any interrupts still pending
2568          * from uCode or flow handler (Rx/Tx DMA) */
2569         iwl_write32(priv, CSR_INT, 0xffffffff);
2570         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2571         IWL_DEBUG_ISR("Disabled interrupts\n");
2572 }
2573
2574
2575 /**
2576  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2577  */
2578 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2579 {
2580         /* Set the FW error flag -- cleared on iwl4965_down */
2581         set_bit(STATUS_FW_ERROR, &priv->status);
2582
2583         /* Cancel currently queued command. */
2584         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2585
2586 #ifdef CONFIG_IWLWIFI_DEBUG
2587         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2588                 iwl_dump_nic_error_log(priv);
2589                 iwl_dump_nic_event_log(priv);
2590                 iwl4965_print_rx_config_cmd(priv);
2591         }
2592 #endif
2593
2594         wake_up_interruptible(&priv->wait_command_queue);
2595
2596         /* Keep the restart process from trying to send host
2597          * commands by clearing the INIT status bit */
2598         clear_bit(STATUS_READY, &priv->status);
2599
2600         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2601                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2602                           "Restarting adapter due to uCode error.\n");
2603
2604                 if (iwl_is_associated(priv)) {
2605                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2606                                sizeof(priv->recovery_rxon));
2607                         priv->error_recovering = 1;
2608                 }
2609                 if (priv->cfg->mod_params->restart_fw)
2610                         queue_work(priv->workqueue, &priv->restart);
2611         }
2612 }
2613
2614 static void iwl4965_error_recovery(struct iwl_priv *priv)
2615 {
2616         unsigned long flags;
2617
2618         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2619                sizeof(priv->staging_rxon));
2620         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2621         iwl4965_commit_rxon(priv);
2622
2623         iwl_rxon_add_station(priv, priv->bssid, 1);
2624
2625         spin_lock_irqsave(&priv->lock, flags);
2626         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2627         priv->error_recovering = 0;
2628         spin_unlock_irqrestore(&priv->lock, flags);
2629 }
2630
2631 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2632 {
2633         u32 inta, handled = 0;
2634         u32 inta_fh;
2635         unsigned long flags;
2636 #ifdef CONFIG_IWLWIFI_DEBUG
2637         u32 inta_mask;
2638 #endif
2639
2640         spin_lock_irqsave(&priv->lock, flags);
2641
2642         /* Ack/clear/reset pending uCode interrupts.
2643          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2644          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2645         inta = iwl_read32(priv, CSR_INT);
2646         iwl_write32(priv, CSR_INT, inta);
2647
2648         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2649          * Any new interrupts that happen after this, either while we're
2650          * in this tasklet, or later, will show up in next ISR/tasklet. */
2651         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2652         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2653
2654 #ifdef CONFIG_IWLWIFI_DEBUG
2655         if (priv->debug_level & IWL_DL_ISR) {
2656                 /* just for debug */
2657                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2658                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2659                               inta, inta_mask, inta_fh);
2660         }
2661 #endif
2662
2663         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2664          * atomic, make sure that inta covers all the interrupts that
2665          * we've discovered, even if FH interrupt came in just after
2666          * reading CSR_INT. */
2667         if (inta_fh & CSR49_FH_INT_RX_MASK)
2668                 inta |= CSR_INT_BIT_FH_RX;
2669         if (inta_fh & CSR49_FH_INT_TX_MASK)
2670                 inta |= CSR_INT_BIT_FH_TX;
2671
2672         /* Now service all interrupt bits discovered above. */
2673         if (inta & CSR_INT_BIT_HW_ERR) {
2674                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2675
2676                 /* Tell the device to stop sending interrupts */
2677                 iwl4965_disable_interrupts(priv);
2678
2679                 iwl4965_irq_handle_error(priv);
2680
2681                 handled |= CSR_INT_BIT_HW_ERR;
2682
2683                 spin_unlock_irqrestore(&priv->lock, flags);
2684
2685                 return;
2686         }
2687
2688 #ifdef CONFIG_IWLWIFI_DEBUG
2689         if (priv->debug_level & (IWL_DL_ISR)) {
2690                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2691                 if (inta & CSR_INT_BIT_SCD)
2692                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2693                                       "the frame/frames.\n");
2694
2695                 /* Alive notification via Rx interrupt will do the real work */
2696                 if (inta & CSR_INT_BIT_ALIVE)
2697                         IWL_DEBUG_ISR("Alive interrupt\n");
2698         }
2699 #endif
2700         /* Safely ignore these bits for debug checks below */
2701         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2702
2703         /* HW RF KILL switch toggled */
2704         if (inta & CSR_INT_BIT_RF_KILL) {
2705                 int hw_rf_kill = 0;
2706                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2707                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2708                         hw_rf_kill = 1;
2709
2710                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2711                                 hw_rf_kill ? "disable radio":"enable radio");
2712
2713                 /* Queue restart only if RF_KILL switch was set to "kill"
2714                  *   when we loaded driver, and is now set to "enable".
2715                  * After we're Alive, RF_KILL gets handled by
2716                  *   iwl4965_rx_card_state_notif() */
2717                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2718                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2719                         queue_work(priv->workqueue, &priv->restart);
2720                 }
2721
2722                 handled |= CSR_INT_BIT_RF_KILL;
2723         }
2724
2725         /* Chip got too hot and stopped itself */
2726         if (inta & CSR_INT_BIT_CT_KILL) {
2727                 IWL_ERROR("Microcode CT kill error detected.\n");
2728                 handled |= CSR_INT_BIT_CT_KILL;
2729         }
2730
2731         /* Error detected by uCode */
2732         if (inta & CSR_INT_BIT_SW_ERR) {
2733                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2734                           inta);
2735                 iwl4965_irq_handle_error(priv);
2736                 handled |= CSR_INT_BIT_SW_ERR;
2737         }
2738
2739         /* uCode wakes up after power-down sleep */
2740         if (inta & CSR_INT_BIT_WAKEUP) {
2741                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2742                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2743                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2744                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2745                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2746                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2747                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2748                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2749
2750                 handled |= CSR_INT_BIT_WAKEUP;
2751         }
2752
2753         /* All uCode command responses, including Tx command responses,
2754          * Rx "responses" (frame-received notification), and other
2755          * notifications from uCode come through here*/
2756         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2757                 iwl_rx_handle(priv);
2758                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2759         }
2760
2761         if (inta & CSR_INT_BIT_FH_TX) {
2762                 IWL_DEBUG_ISR("Tx interrupt\n");
2763                 handled |= CSR_INT_BIT_FH_TX;
2764                 /* FH finished to write, send event */
2765                 priv->ucode_write_complete = 1;
2766                 wake_up_interruptible(&priv->wait_command_queue);
2767         }
2768
2769         if (inta & ~handled)
2770                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2771
2772         if (inta & ~CSR_INI_SET_MASK) {
2773                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2774                          inta & ~CSR_INI_SET_MASK);
2775                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2776         }
2777
2778         /* Re-enable all interrupts */
2779         /* only Re-enable if diabled by irq */
2780         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2781                 iwl4965_enable_interrupts(priv);
2782
2783 #ifdef CONFIG_IWLWIFI_DEBUG
2784         if (priv->debug_level & (IWL_DL_ISR)) {
2785                 inta = iwl_read32(priv, CSR_INT);
2786                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2787                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2788                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2789                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2790         }
2791 #endif
2792         spin_unlock_irqrestore(&priv->lock, flags);
2793 }
2794
2795 static irqreturn_t iwl4965_isr(int irq, void *data)
2796 {
2797         struct iwl_priv *priv = data;
2798         u32 inta, inta_mask;
2799         u32 inta_fh;
2800         if (!priv)
2801                 return IRQ_NONE;
2802
2803         spin_lock(&priv->lock);
2804
2805         /* Disable (but don't clear!) interrupts here to avoid
2806          *    back-to-back ISRs and sporadic interrupts from our NIC.
2807          * If we have something to service, the tasklet will re-enable ints.
2808          * If we *don't* have something, we'll re-enable before leaving here. */
2809         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2810         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2811
2812         /* Discover which interrupts are active/pending */
2813         inta = iwl_read32(priv, CSR_INT);
2814         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2815
2816         /* Ignore interrupt if there's nothing in NIC to service.
2817          * This may be due to IRQ shared with another device,
2818          * or due to sporadic interrupts thrown from our NIC. */
2819         if (!inta && !inta_fh) {
2820                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2821                 goto none;
2822         }
2823
2824         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2825                 /* Hardware disappeared. It might have already raised
2826                  * an interrupt */
2827                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2828                 goto unplugged;
2829         }
2830
2831         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2832                       inta, inta_mask, inta_fh);
2833
2834         inta &= ~CSR_INT_BIT_SCD;
2835
2836         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2837         if (likely(inta || inta_fh))
2838                 tasklet_schedule(&priv->irq_tasklet);
2839
2840  unplugged:
2841         spin_unlock(&priv->lock);
2842         return IRQ_HANDLED;
2843
2844  none:
2845         /* re-enable interrupts here since we don't have anything to service. */
2846         /* only Re-enable if diabled by irq */
2847         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2848                 iwl4965_enable_interrupts(priv);
2849         spin_unlock(&priv->lock);
2850         return IRQ_NONE;
2851 }
2852
2853 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2854  * sending probe req.  This should be set long enough to hear probe responses
2855  * from more than one AP.  */
2856 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2857 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2858
2859 /* For faster active scanning, scan will move to the next channel if fewer than
2860  * PLCP_QUIET_THRESH packets are heard on this channel within
2861  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2862  * time if it's a quiet channel (nothing responded to our probe, and there's
2863  * no other traffic).
2864  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2865 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2866 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2867
2868 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2869  * Must be set longer than active dwell time.
2870  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2871 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2872 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2873 #define IWL_PASSIVE_DWELL_BASE      (100)
2874 #define IWL_CHANNEL_TUNE_TIME       5
2875
2876 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2877                                                 enum ieee80211_band band)
2878 {
2879         if (band == IEEE80211_BAND_5GHZ)
2880                 return IWL_ACTIVE_DWELL_TIME_52;
2881         else
2882                 return IWL_ACTIVE_DWELL_TIME_24;
2883 }
2884
2885 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2886                                           enum ieee80211_band band)
2887 {
2888         u16 active = iwl4965_get_active_dwell_time(priv, band);
2889         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2890             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2891             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2892
2893         if (iwl_is_associated(priv)) {
2894                 /* If we're associated, we clamp the maximum passive
2895                  * dwell time to be 98% of the beacon interval (minus
2896                  * 2 * channel tune time) */
2897                 passive = priv->beacon_int;
2898                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2899                         passive = IWL_PASSIVE_DWELL_BASE;
2900                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2901         }
2902
2903         if (passive <= active)
2904                 passive = active + 1;
2905
2906         return passive;
2907 }
2908
2909 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2910                                          enum ieee80211_band band,
2911                                      u8 is_active, u8 direct_mask,
2912                                      struct iwl4965_scan_channel *scan_ch)
2913 {
2914         const struct ieee80211_channel *channels = NULL;
2915         const struct ieee80211_supported_band *sband;
2916         const struct iwl_channel_info *ch_info;
2917         u16 passive_dwell = 0;
2918         u16 active_dwell = 0;
2919         int added, i;
2920
2921         sband = iwl_get_hw_mode(priv, band);
2922         if (!sband)
2923                 return 0;
2924
2925         channels = sband->channels;
2926
2927         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2928         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2929
2930         for (i = 0, added = 0; i < sband->n_channels; i++) {
2931                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2932                         continue;
2933
2934                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2935
2936                 ch_info = iwl_get_channel_info(priv, band,
2937                                          scan_ch->channel);
2938                 if (!is_channel_valid(ch_info)) {
2939                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2940                                        scan_ch->channel);
2941                         continue;
2942                 }
2943
2944                 if (!is_active || is_channel_passive(ch_info) ||
2945                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2946                         scan_ch->type = 0;      /* passive */
2947                 else
2948                         scan_ch->type = 1;      /* active */
2949
2950                 if (scan_ch->type & 1)
2951                         scan_ch->type |= (direct_mask << 1);
2952
2953                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2954                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2955
2956                 /* Set txpower levels to defaults */
2957                 scan_ch->tpc.dsp_atten = 110;
2958                 /* scan_pwr_info->tpc.dsp_atten; */
2959
2960                 /*scan_pwr_info->tpc.tx_gain; */
2961                 if (band == IEEE80211_BAND_5GHZ)
2962                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2963                 else {
2964                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2965                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2966                          * power level:
2967                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2968                          */
2969                 }
2970
2971                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2972                                scan_ch->channel,
2973                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2974                                (scan_ch->type & 1) ?
2975                                active_dwell : passive_dwell);
2976
2977                 scan_ch++;
2978                 added++;
2979         }
2980
2981         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2982         return added;
2983 }
2984
2985 /******************************************************************************
2986  *
2987  * uCode download functions
2988  *
2989  ******************************************************************************/
2990
2991 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2992 {
2993         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2994         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2995         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2996         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2997         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2998         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2999 }
3000
3001 static void iwl4965_nic_start(struct iwl_priv *priv)
3002 {
3003         /* Remove all resets to allow NIC to operate */
3004         iwl_write32(priv, CSR_RESET, 0);
3005 }
3006
3007
3008 /**
3009  * iwl4965_read_ucode - Read uCode images from disk file.
3010  *
3011  * Copy into buffers for card to fetch via bus-mastering
3012  */
3013 static int iwl4965_read_ucode(struct iwl_priv *priv)
3014 {
3015         struct iwl4965_ucode *ucode;
3016         int ret;
3017         const struct firmware *ucode_raw;
3018         const char *name = priv->cfg->fw_name;
3019         u8 *src;
3020         size_t len;
3021         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3022
3023         /* Ask kernel firmware_class module to get the boot firmware off disk.
3024          * request_firmware() is synchronous, file is in memory on return. */
3025         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3026         if (ret < 0) {
3027                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3028                                         name, ret);
3029                 goto error;
3030         }
3031
3032         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3033                        name, ucode_raw->size);
3034
3035         /* Make sure that we got at least our header! */
3036         if (ucode_raw->size < sizeof(*ucode)) {
3037                 IWL_ERROR("File size way too small!\n");
3038                 ret = -EINVAL;
3039                 goto err_release;
3040         }
3041
3042         /* Data from ucode file:  header followed by uCode images */
3043         ucode = (void *)ucode_raw->data;
3044
3045         ver = le32_to_cpu(ucode->ver);
3046         inst_size = le32_to_cpu(ucode->inst_size);
3047         data_size = le32_to_cpu(ucode->data_size);
3048         init_size = le32_to_cpu(ucode->init_size);
3049         init_data_size = le32_to_cpu(ucode->init_data_size);
3050         boot_size = le32_to_cpu(ucode->boot_size);
3051
3052         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3053         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3054                        inst_size);
3055         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3056                        data_size);
3057         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3058                        init_size);
3059         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3060                        init_data_size);
3061         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3062                        boot_size);
3063
3064         /* Verify size of file vs. image size info in file's header */
3065         if (ucode_raw->size < sizeof(*ucode) +
3066                 inst_size + data_size + init_size +
3067                 init_data_size + boot_size) {
3068
3069                 IWL_DEBUG_INFO("uCode file size %d too small\n",
3070                                (int)ucode_raw->size);
3071                 ret = -EINVAL;
3072                 goto err_release;
3073         }
3074
3075         /* Verify that uCode images will fit in card's SRAM */
3076         if (inst_size > priv->hw_params.max_inst_size) {
3077                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3078                                inst_size);
3079                 ret = -EINVAL;
3080                 goto err_release;
3081         }
3082
3083         if (data_size > priv->hw_params.max_data_size) {
3084                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3085                                 data_size);
3086                 ret = -EINVAL;
3087                 goto err_release;
3088         }
3089         if (init_size > priv->hw_params.max_inst_size) {
3090                 IWL_DEBUG_INFO
3091                     ("uCode init instr len %d too large to fit in\n",
3092                       init_size);
3093                 ret = -EINVAL;
3094                 goto err_release;
3095         }
3096         if (init_data_size > priv->hw_params.max_data_size) {
3097                 IWL_DEBUG_INFO
3098                     ("uCode init data len %d too large to fit in\n",
3099                       init_data_size);
3100                 ret = -EINVAL;
3101                 goto err_release;
3102         }
3103         if (boot_size > priv->hw_params.max_bsm_size) {
3104                 IWL_DEBUG_INFO
3105                     ("uCode boot instr len %d too large to fit in\n",
3106                       boot_size);
3107                 ret = -EINVAL;
3108                 goto err_release;
3109         }
3110
3111         /* Allocate ucode buffers for card's bus-master loading ... */
3112
3113         /* Runtime instructions and 2 copies of data:
3114          * 1) unmodified from disk
3115          * 2) backup cache for save/restore during power-downs */
3116         priv->ucode_code.len = inst_size;
3117         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3118
3119         priv->ucode_data.len = data_size;
3120         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3121
3122         priv->ucode_data_backup.len = data_size;
3123         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3124
3125         /* Initialization instructions and data */
3126         if (init_size && init_data_size) {
3127                 priv->ucode_init.len = init_size;
3128                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3129
3130                 priv->ucode_init_data.len = init_data_size;
3131                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3132
3133                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3134                         goto err_pci_alloc;
3135         }
3136
3137         /* Bootstrap (instructions only, no data) */
3138         if (boot_size) {
3139                 priv->ucode_boot.len = boot_size;
3140                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3141
3142                 if (!priv->ucode_boot.v_addr)
3143                         goto err_pci_alloc;
3144         }
3145
3146         /* Copy images into buffers for card's bus-master reads ... */
3147
3148         /* Runtime instructions (first block of data in file) */
3149         src = &ucode->data[0];
3150         len = priv->ucode_code.len;
3151         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3152         memcpy(priv->ucode_code.v_addr, src, len);
3153         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3154                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3155
3156         /* Runtime data (2nd block)
3157          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
3158         src = &ucode->data[inst_size];
3159         len = priv->ucode_data.len;
3160         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3161         memcpy(priv->ucode_data.v_addr, src, len);
3162         memcpy(priv->ucode_data_backup.v_addr, src, len);
3163
3164         /* Initialization instructions (3rd block) */
3165         if (init_size) {
3166                 src = &ucode->data[inst_size + data_size];
3167                 len = priv->ucode_init.len;
3168                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3169                                 len);
3170                 memcpy(priv->ucode_init.v_addr, src, len);
3171         }
3172
3173         /* Initialization data (4th block) */
3174         if (init_data_size) {
3175                 src = &ucode->data[inst_size + data_size + init_size];
3176                 len = priv->ucode_init_data.len;
3177                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3178                                len);
3179                 memcpy(priv->ucode_init_data.v_addr, src, len);
3180         }
3181
3182         /* Bootstrap instructions (5th block) */
3183         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3184         len = priv->ucode_boot.len;
3185         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
3186         memcpy(priv->ucode_boot.v_addr, src, len);
3187
3188         /* We have our copies now, allow OS release its copies */
3189         release_firmware(ucode_raw);
3190         return 0;
3191
3192  err_pci_alloc:
3193         IWL_ERROR("failed to allocate pci memory\n");
3194         ret = -ENOMEM;
3195         iwl4965_dealloc_ucode_pci(priv);
3196
3197  err_release:
3198         release_firmware(ucode_raw);
3199
3200  error:
3201         return ret;
3202 }
3203
3204 /**
3205  * iwl_alive_start - called after REPLY_ALIVE notification received
3206  *                   from protocol/runtime uCode (initialization uCode's
3207  *                   Alive gets handled by iwl_init_alive_start()).
3208  */
3209 static void iwl_alive_start(struct iwl_priv *priv)
3210 {
3211         int ret = 0;
3212
3213         IWL_DEBUG_INFO("Runtime Alive received.\n");
3214
3215         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3216                 /* We had an error bringing up the hardware, so take it
3217                  * all the way back down so we can try again */
3218                 IWL_DEBUG_INFO("Alive failed.\n");
3219                 goto restart;
3220         }
3221
3222         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3223          * This is a paranoid check, because we would not have gotten the
3224          * "runtime" alive if code weren't properly loaded.  */
3225         if (iwl_verify_ucode(priv)) {
3226                 /* Runtime instruction load was bad;
3227                  * take it all the way back down so we can try again */
3228                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3229                 goto restart;
3230         }
3231
3232         iwlcore_clear_stations_table(priv);
3233         ret = priv->cfg->ops->lib->alive_notify(priv);
3234         if (ret) {
3235                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
3236                             ret);
3237                 goto restart;
3238         }
3239
3240         /* After the ALIVE response, we can send host commands to 4965 uCode */
3241         set_bit(STATUS_ALIVE, &priv->status);
3242
3243         /* Clear out the uCode error bit if it is set */
3244         clear_bit(STATUS_FW_ERROR, &priv->status);
3245
3246         if (iwl_is_rfkill(priv))
3247                 return;
3248
3249         ieee80211_wake_queues(priv->hw);
3250
3251         priv->active_rate = priv->rates_mask;
3252         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3253
3254         if (iwl_is_associated(priv)) {
3255                 struct iwl_rxon_cmd *active_rxon =
3256                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
3257
3258                 memcpy(&priv->staging_rxon, &priv->active_rxon,
3259                        sizeof(priv->staging_rxon));
3260                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3261         } else {
3262                 /* Initialize our rx_config data */
3263                 iwl4965_connection_init_rx_config(priv);
3264                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
3265         }
3266
3267         /* Configure Bluetooth device coexistence support */
3268         iwl4965_send_bt_config(priv);
3269
3270         iwl_reset_run_time_calib(priv);
3271
3272         /* Configure the adapter for unassociated operation */
3273         iwl4965_commit_rxon(priv);
3274
3275         /* At this point, the NIC is initialized and operational */
3276         iwl4965_rf_kill_ct_config(priv);
3277
3278         iwl_leds_register(priv);
3279
3280         IWL_DEBUG_INFO("ALIVE processing complete.\n");
3281         set_bit(STATUS_READY, &priv->status);
3282         wake_up_interruptible(&priv->wait_command_queue);
3283
3284         if (priv->error_recovering)
3285                 iwl4965_error_recovery(priv);
3286
3287         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
3288         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
3289         return;
3290
3291  restart:
3292         queue_work(priv->workqueue, &priv->restart);
3293 }
3294
3295 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
3296
3297 static void __iwl4965_down(struct iwl_priv *priv)
3298 {
3299         unsigned long flags;
3300         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3301
3302         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3303
3304         if (!exit_pending)
3305                 set_bit(STATUS_EXIT_PENDING, &priv->status);
3306
3307         iwl_leds_unregister(priv);
3308
3309         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3310
3311         iwlcore_clear_stations_table(priv);
3312
3313         /* Unblock any waiting calls */
3314         wake_up_interruptible_all(&priv->wait_command_queue);
3315
3316         /* Wipe out the EXIT_PENDING status bit if we are not actually
3317          * exiting the module */
3318         if (!exit_pending)
3319                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3320
3321         /* stop and reset the on-board processor */
3322         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3323
3324         /* tell the device to stop sending interrupts */
3325         spin_lock_irqsave(&priv->lock, flags);
3326         iwl4965_disable_interrupts(priv);
3327         spin_unlock_irqrestore(&priv->lock, flags);
3328         iwl_synchronize_irq(priv);
3329
3330         if (priv->mac80211_registered)
3331                 ieee80211_stop_queues(priv->hw);
3332
3333         /* If we have not previously called iwl4965_init() then
3334          * clear all bits but the RF Kill and SUSPEND bits and return */
3335         if (!iwl_is_init(priv)) {
3336                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3337                                         STATUS_RF_KILL_HW |
3338                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3339                                         STATUS_RF_KILL_SW |
3340                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3341                                         STATUS_GEO_CONFIGURED |
3342                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3343                                         STATUS_IN_SUSPEND;
3344                 goto exit;
3345         }
3346
3347         /* ...otherwise clear out all the status bits but the RF Kill and
3348          * SUSPEND bits and continue taking the NIC down. */
3349         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3350                                 STATUS_RF_KILL_HW |
3351                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3352                                 STATUS_RF_KILL_SW |
3353                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3354                                 STATUS_GEO_CONFIGURED |
3355                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3356                                 STATUS_IN_SUSPEND |
3357                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3358                                 STATUS_FW_ERROR;
3359
3360         spin_lock_irqsave(&priv->lock, flags);
3361         iwl_clear_bit(priv, CSR_GP_CNTRL,
3362                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3363         spin_unlock_irqrestore(&priv->lock, flags);
3364
3365         iwl_txq_ctx_stop(priv);
3366         iwl_rxq_stop(priv);
3367
3368         spin_lock_irqsave(&priv->lock, flags);
3369         if (!iwl_grab_nic_access(priv)) {
3370                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3371                                          APMG_CLK_VAL_DMA_CLK_RQT);
3372                 iwl_release_nic_access(priv);
3373         }
3374         spin_unlock_irqrestore(&priv->lock, flags);
3375
3376         udelay(5);
3377
3378         /* FIXME: apm_ops.suspend(priv) */
3379         priv->cfg->ops->lib->apm_ops.reset(priv);
3380         priv->cfg->ops->lib->free_shared_mem(priv);
3381
3382  exit:
3383         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3384
3385         if (priv->ibss_beacon)
3386                 dev_kfree_skb(priv->ibss_beacon);
3387         priv->ibss_beacon = NULL;
3388
3389         /* clear out any free frames */
3390         iwl_clear_free_frames(priv);
3391 }
3392
3393 static void iwl4965_down(struct iwl_priv *priv)
3394 {
3395         mutex_lock(&priv->mutex);
3396         __iwl4965_down(priv);
3397         mutex_unlock(&priv->mutex);
3398
3399         iwl4965_cancel_deferred_work(priv);
3400 }
3401
3402 #define MAX_HW_RESTARTS 5
3403
3404 static int __iwl4965_up(struct iwl_priv *priv)
3405 {
3406         int i;
3407         int ret;
3408
3409         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3410                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3411                 return -EIO;
3412         }
3413
3414         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3415                 IWL_WARNING("Radio disabled by SW RF kill (module "
3416                             "parameter)\n");
3417                 iwl_rfkill_set_hw_state(priv);
3418                 return -ENODEV;
3419         }
3420
3421         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3422                 IWL_ERROR("ucode not available for device bringup\n");
3423                 return -EIO;
3424         }
3425
3426         /* If platform's RF_KILL switch is NOT set to KILL */
3427         if (iwl_read32(priv, CSR_GP_CNTRL) &
3428                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3429                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3430         else {
3431                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3432                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3433                         iwl_rfkill_set_hw_state(priv);
3434                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3435                         return -ENODEV;
3436                 }
3437         }
3438
3439         iwl_rfkill_set_hw_state(priv);
3440         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3441
3442         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3443         if (ret) {
3444                 IWL_ERROR("Unable to allocate shared memory\n");
3445                 return ret;
3446         }
3447
3448         ret = iwl_hw_nic_init(priv);
3449         if (ret) {
3450                 IWL_ERROR("Unable to init nic\n");
3451                 return ret;
3452         }
3453
3454         /* make sure rfkill handshake bits are cleared */
3455         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3456         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3457                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3458
3459         /* clear (again), then enable host interrupts */
3460         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3461         iwl4965_enable_interrupts(priv);
3462
3463         /* really make sure rfkill handshake bits are cleared */
3464         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3465         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3466
3467         /* Copy original ucode data image from disk into backup cache.
3468          * This will be used to initialize the on-board processor's
3469          * data SRAM for a clean start when the runtime program first loads. */
3470         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3471                priv->ucode_data.len);
3472
3473         /* We return success when we resume from suspend and rf_kill is on. */
3474         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3475                 return 0;
3476
3477         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3478
3479                 iwlcore_clear_stations_table(priv);
3480
3481                 /* load bootstrap state machine,
3482                  * load bootstrap program into processor's memory,
3483                  * prepare to load the "initialize" uCode */
3484                 ret = priv->cfg->ops->lib->load_ucode(priv);
3485
3486                 if (ret) {
3487                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3488                         continue;
3489                 }
3490
3491                 /* start card; "initialize" will load runtime ucode */
3492                 iwl4965_nic_start(priv);
3493
3494                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3495
3496                 return 0;
3497         }
3498
3499         set_bit(STATUS_EXIT_PENDING, &priv->status);
3500         __iwl4965_down(priv);
3501
3502         /* tried to restart and config the device for as long as our
3503          * patience could withstand */
3504         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3505         return -EIO;
3506 }
3507
3508
3509 /*****************************************************************************
3510  *
3511  * Workqueue callbacks
3512  *
3513  *****************************************************************************/
3514
3515 static void iwl_bg_init_alive_start(struct work_struct *data)
3516 {
3517         struct iwl_priv *priv =
3518             container_of(data, struct iwl_priv, init_alive_start.work);
3519
3520         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3521                 return;
3522
3523         mutex_lock(&priv->mutex);
3524         priv->cfg->ops->lib->init_alive_start(priv);
3525         mutex_unlock(&priv->mutex);
3526 }
3527
3528 static void iwl_bg_alive_start(struct work_struct *data)
3529 {
3530         struct iwl_priv *priv =
3531             container_of(data, struct iwl_priv, alive_start.work);
3532
3533         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3534                 return;
3535
3536         mutex_lock(&priv->mutex);
3537         iwl_alive_start(priv);
3538         mutex_unlock(&priv->mutex);
3539 }
3540
3541 static void iwl4965_bg_rf_kill(struct work_struct *work)
3542 {
3543         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3544
3545         wake_up_interruptible(&priv->wait_command_queue);
3546
3547         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3548                 return;
3549
3550         mutex_lock(&priv->mutex);
3551
3552         if (!iwl_is_rfkill(priv)) {
3553                 IWL_DEBUG(IWL_DL_RF_KILL,
3554                           "HW and/or SW RF Kill no longer active, restarting "
3555                           "device\n");
3556                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3557                         queue_work(priv->workqueue, &priv->restart);
3558         } else {
3559                 /* make sure mac80211 stop sending Tx frame */
3560                 if (priv->mac80211_registered)
3561                         ieee80211_stop_queues(priv->hw);
3562
3563                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3564                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3565                                           "disabled by SW switch\n");
3566                 else
3567                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3568                                     "Kill switch must be turned off for "
3569                                     "wireless networking to work.\n");
3570         }
3571         iwl_rfkill_set_hw_state(priv);
3572
3573         mutex_unlock(&priv->mutex);
3574 }
3575
3576 static void iwl4965_bg_set_monitor(struct work_struct *work)
3577 {
3578         struct iwl_priv *priv = container_of(work,
3579                                 struct iwl_priv, set_monitor);
3580
3581         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3582
3583         mutex_lock(&priv->mutex);
3584
3585         if (!iwl_is_ready(priv))
3586                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3587         else
3588                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3589                         IWL_ERROR("iwl4965_set_mode() failed\n");
3590
3591         mutex_unlock(&priv->mutex);
3592 }
3593
3594 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3595
3596 static void iwl4965_bg_scan_check(struct work_struct *data)
3597 {
3598         struct iwl_priv *priv =
3599             container_of(data, struct iwl_priv, scan_check.work);
3600
3601         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3602                 return;
3603
3604         mutex_lock(&priv->mutex);
3605         if (test_bit(STATUS_SCANNING, &priv->status) ||
3606             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3607                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3608                         "adapter (%dms)\n",
3609                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3610
3611                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3612                         iwl4965_send_scan_abort(priv);
3613         }
3614         mutex_unlock(&priv->mutex);
3615 }
3616
3617 static void iwl4965_bg_request_scan(struct work_struct *data)
3618 {
3619         struct iwl_priv *priv =
3620             container_of(data, struct iwl_priv, request_scan);
3621         struct iwl_host_cmd cmd = {
3622                 .id = REPLY_SCAN_CMD,
3623                 .len = sizeof(struct iwl4965_scan_cmd),
3624                 .meta.flags = CMD_SIZE_HUGE,
3625         };
3626         struct iwl4965_scan_cmd *scan;
3627         struct ieee80211_conf *conf = NULL;
3628         u16 cmd_len;
3629         enum ieee80211_band band;
3630         u8 direct_mask;
3631         int ret = 0;
3632
3633         conf = ieee80211_get_hw_conf(priv->hw);
3634
3635         mutex_lock(&priv->mutex);
3636
3637         if (!iwl_is_ready(priv)) {
3638                 IWL_WARNING("request scan called when driver not ready.\n");
3639                 goto done;
3640         }
3641
3642         /* Make sure the scan wasn't cancelled before this queued work
3643          * was given the chance to run... */
3644         if (!test_bit(STATUS_SCANNING, &priv->status))
3645                 goto done;
3646
3647         /* This should never be called or scheduled if there is currently
3648          * a scan active in the hardware. */
3649         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3650                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3651                                "Ignoring second request.\n");
3652                 ret = -EIO;
3653                 goto done;
3654         }
3655
3656         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3657                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3658                 goto done;
3659         }
3660
3661         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3662                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3663                 goto done;
3664         }
3665
3666         if (iwl_is_rfkill(priv)) {
3667                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3668                 goto done;
3669         }
3670
3671         if (!test_bit(STATUS_READY, &priv->status)) {
3672                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3673                 goto done;
3674         }
3675
3676         if (!priv->scan_bands) {
3677                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3678                 goto done;
3679         }
3680
3681         if (!priv->scan) {
3682                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3683                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3684                 if (!priv->scan) {
3685                         ret = -ENOMEM;
3686                         goto done;
3687                 }
3688         }
3689         scan = priv->scan;
3690         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3691
3692         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3693         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3694
3695         if (iwl_is_associated(priv)) {
3696                 u16 interval = 0;
3697                 u32 extra;
3698                 u32 suspend_time = 100;
3699                 u32 scan_suspend_time = 100;
3700                 unsigned long flags;
3701
3702                 IWL_DEBUG_INFO("Scanning while associated...\n");
3703
3704                 spin_lock_irqsave(&priv->lock, flags);
3705                 interval = priv->beacon_int;
3706                 spin_unlock_irqrestore(&priv->lock, flags);
3707
3708                 scan->suspend_time = 0;
3709                 scan->max_out_time = cpu_to_le32(200 * 1024);
3710                 if (!interval)
3711                         interval = suspend_time;
3712
3713                 extra = (suspend_time / interval) << 22;
3714                 scan_suspend_time = (extra |
3715                     ((suspend_time % interval) * 1024));
3716                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3717                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3718                                scan_suspend_time, interval);
3719         }
3720
3721         /* We should add the ability for user to lock to PASSIVE ONLY */
3722         if (priv->one_direct_scan) {
3723                 IWL_DEBUG_SCAN
3724                     ("Kicking off one direct scan for '%s'\n",
3725                      iwl4965_escape_essid(priv->direct_ssid,
3726                                       priv->direct_ssid_len));
3727                 scan->direct_scan[0].id = WLAN_EID_SSID;
3728                 scan->direct_scan[0].len = priv->direct_ssid_len;
3729                 memcpy(scan->direct_scan[0].ssid,
3730                        priv->direct_ssid, priv->direct_ssid_len);
3731                 direct_mask = 1;
3732         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3733                 IWL_DEBUG_SCAN
3734                   ("Kicking off one direct scan for '%s' when not associated\n",
3735                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3736                 scan->direct_scan[0].id = WLAN_EID_SSID;
3737                 scan->direct_scan[0].len = priv->essid_len;
3738                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3739                 direct_mask = 1;
3740         } else {
3741                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3742                 direct_mask = 0;
3743         }
3744
3745         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3746         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3747         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3748
3749
3750         switch (priv->scan_bands) {
3751         case 2:
3752                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3753                 scan->tx_cmd.rate_n_flags =
3754                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3755                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3756
3757                 scan->good_CRC_th = 0;
3758                 band = IEEE80211_BAND_2GHZ;
3759                 break;
3760
3761         case 1:
3762                 scan->tx_cmd.rate_n_flags =
3763                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3764                                 RATE_MCS_ANT_B_MSK);
3765                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3766                 band = IEEE80211_BAND_5GHZ;
3767                 break;
3768
3769         default:
3770                 IWL_WARNING("Invalid scan band count\n");
3771                 goto done;
3772         }
3773
3774         /* We don't build a direct scan probe request; the uCode will do
3775          * that based on the direct_mask added to each channel entry */
3776         cmd_len = iwl4965_fill_probe_req(priv, band,
3777                                         (struct ieee80211_mgmt *)scan->data,
3778                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3779
3780         scan->tx_cmd.len = cpu_to_le16(cmd_len);
3781         /* select Rx chains */
3782
3783         /* Force use of chains B and C (0x6) for scan Rx.
3784          * Avoid A (0x1) because of its off-channel reception on A-band.
3785          * MIMO is not used here, but value is required to make uCode happy. */
3786         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3787                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3788                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3789                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3790
3791         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3792                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3793
3794         if (direct_mask)
3795                 scan->channel_count =
3796                         iwl4965_get_channels_for_scan(
3797                                 priv, band, 1, /* active */
3798                                 direct_mask,
3799                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3800         else
3801                 scan->channel_count =
3802                         iwl4965_get_channels_for_scan(
3803                                 priv, band, 0, /* passive */
3804                                 direct_mask,
3805                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3806
3807         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3808                                RXON_FILTER_BCON_AWARE_MSK);
3809         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3810             scan->channel_count * sizeof(struct iwl4965_scan_channel);
3811         cmd.data = scan;
3812         scan->len = cpu_to_le16(cmd.len);
3813
3814         set_bit(STATUS_SCAN_HW, &priv->status);
3815         ret = iwl_send_cmd_sync(priv, &cmd);
3816         if (ret)
3817                 goto done;
3818
3819         queue_delayed_work(priv->workqueue, &priv->scan_check,
3820                            IWL_SCAN_CHECK_WATCHDOG);
3821
3822         mutex_unlock(&priv->mutex);
3823         return;
3824
3825  done:
3826         /* inform mac80211 scan aborted */
3827         queue_work(priv->workqueue, &priv->scan_completed);
3828         mutex_unlock(&priv->mutex);
3829 }
3830
3831 static void iwl4965_bg_up(struct work_struct *data)
3832 {
3833         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3834
3835         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3836                 return;
3837
3838         mutex_lock(&priv->mutex);
3839         __iwl4965_up(priv);
3840         mutex_unlock(&priv->mutex);
3841 }
3842
3843 static void iwl4965_bg_restart(struct work_struct *data)
3844 {
3845         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3846
3847         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3848                 return;
3849
3850         iwl4965_down(priv);
3851         queue_work(priv->workqueue, &priv->up);
3852 }
3853
3854 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3855 {
3856         struct iwl_priv *priv =
3857             container_of(data, struct iwl_priv, rx_replenish);
3858
3859         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3860                 return;
3861
3862         mutex_lock(&priv->mutex);
3863         iwl_rx_replenish(priv);
3864         mutex_unlock(&priv->mutex);
3865 }
3866
3867 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3868
3869 static void iwl4965_post_associate(struct iwl_priv *priv)
3870 {
3871         struct ieee80211_conf *conf = NULL;
3872         int ret = 0;
3873         DECLARE_MAC_BUF(mac);
3874
3875         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3876                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3877                 return;
3878         }
3879
3880         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3881                         priv->assoc_id,
3882                         print_mac(mac, priv->active_rxon.bssid_addr));
3883
3884
3885         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3886                 return;
3887
3888
3889         if (!priv->vif || !priv->is_open)
3890                 return;
3891
3892         iwl4965_scan_cancel_timeout(priv, 200);
3893
3894         conf = ieee80211_get_hw_conf(priv->hw);
3895
3896         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3897         iwl4965_commit_rxon(priv);
3898
3899         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3900         iwl4965_setup_rxon_timing(priv);
3901         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3902                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3903         if (ret)
3904                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3905                             "Attempting to continue.\n");
3906
3907         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3908
3909 #ifdef CONFIG_IWL4965_HT
3910         if (priv->current_ht_config.is_ht)
3911                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3912 #endif /* CONFIG_IWL4965_HT*/
3913         iwl_set_rxon_chain(priv);
3914         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3915
3916         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3917                         priv->assoc_id, priv->beacon_int);
3918
3919         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3920                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3921         else
3922                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3923
3924         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3925                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3926                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3927                 else
3928                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3929
3930                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3931                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3932
3933         }
3934
3935         iwl4965_commit_rxon(priv);
3936
3937         switch (priv->iw_mode) {
3938         case IEEE80211_IF_TYPE_STA:
3939                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3940                 break;
3941
3942         case IEEE80211_IF_TYPE_IBSS:
3943
3944                 /* clear out the station table */
3945                 iwlcore_clear_stations_table(priv);
3946
3947                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3948                 iwl_rxon_add_station(priv, priv->bssid, 0);
3949                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3950                 iwl4965_send_beacon_cmd(priv);
3951
3952                 break;
3953
3954         default:
3955                 IWL_ERROR("%s Should not be called in %d mode\n",
3956                                 __FUNCTION__, priv->iw_mode);
3957                 break;
3958         }
3959
3960         iwl4965_sequence_reset(priv);
3961
3962         /* Enable Rx differential gain and sensitivity calibrations */
3963         iwl_chain_noise_reset(priv);
3964         priv->start_calib = 1;
3965
3966         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3967                 priv->assoc_station_added = 1;
3968
3969         iwl4965_activate_qos(priv, 0);
3970
3971         iwl_power_update_mode(priv, 0);
3972         /* we have just associated, don't start scan too early */
3973         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3974 }
3975
3976
3977 static void iwl4965_bg_post_associate(struct work_struct *data)
3978 {
3979         struct iwl_priv *priv = container_of(data, struct iwl_priv,
3980                                              post_associate.work);
3981
3982         mutex_lock(&priv->mutex);
3983         iwl4965_post_associate(priv);
3984         mutex_unlock(&priv->mutex);
3985
3986 }
3987
3988 static void iwl4965_bg_abort_scan(struct work_struct *work)
3989 {
3990         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3991
3992         if (!iwl_is_ready(priv))
3993                 return;
3994
3995         mutex_lock(&priv->mutex);
3996
3997         set_bit(STATUS_SCAN_ABORTING, &priv->status);
3998         iwl4965_send_scan_abort(priv);
3999
4000         mutex_unlock(&priv->mutex);
4001 }
4002
4003 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4004
4005 static void iwl4965_bg_scan_completed(struct work_struct *work)
4006 {
4007         struct iwl_priv *priv =
4008             container_of(work, struct iwl_priv, scan_completed);
4009
4010         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4011
4012         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4013                 return;
4014
4015         if (test_bit(STATUS_CONF_PENDING, &priv->status))
4016                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4017
4018         ieee80211_scan_completed(priv->hw);
4019
4020         /* Since setting the TXPOWER may have been deferred while
4021          * performing the scan, fire one off */
4022         mutex_lock(&priv->mutex);
4023         iwl4965_hw_reg_send_txpower(priv);
4024         mutex_unlock(&priv->mutex);
4025 }
4026
4027 /*****************************************************************************
4028  *
4029  * mac80211 entry point functions
4030  *
4031  *****************************************************************************/
4032
4033 #define UCODE_READY_TIMEOUT     (2 * HZ)
4034
4035 static int iwl4965_mac_start(struct ieee80211_hw *hw)
4036 {
4037         struct iwl_priv *priv = hw->priv;
4038         int ret;
4039
4040         IWL_DEBUG_MAC80211("enter\n");
4041
4042         if (pci_enable_device(priv->pci_dev)) {
4043                 IWL_ERROR("Fail to pci_enable_device\n");
4044                 return -ENODEV;
4045         }
4046         pci_restore_state(priv->pci_dev);
4047         pci_enable_msi(priv->pci_dev);
4048
4049         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4050                           DRV_NAME, priv);
4051         if (ret) {
4052                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4053                 goto out_disable_msi;
4054         }
4055
4056         /* we should be verifying the device is ready to be opened */
4057         mutex_lock(&priv->mutex);
4058
4059         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
4060         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4061          * ucode filename and max sizes are card-specific. */
4062
4063         if (!priv->ucode_code.len) {
4064                 ret = iwl4965_read_ucode(priv);
4065                 if (ret) {
4066                         IWL_ERROR("Could not read microcode: %d\n", ret);
4067                         mutex_unlock(&priv->mutex);
4068                         goto out_release_irq;
4069                 }
4070         }
4071
4072         ret = __iwl4965_up(priv);
4073
4074         mutex_unlock(&priv->mutex);
4075
4076         if (ret)
4077                 goto out_release_irq;
4078
4079         IWL_DEBUG_INFO("Start UP work done.\n");
4080
4081         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4082                 return 0;
4083
4084         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4085          * mac80211 will not be run successfully. */
4086         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4087                         test_bit(STATUS_READY, &priv->status),
4088                         UCODE_READY_TIMEOUT);
4089         if (!ret) {
4090                 if (!test_bit(STATUS_READY, &priv->status)) {
4091                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4092                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
4093                         ret = -ETIMEDOUT;
4094                         goto out_release_irq;
4095                 }
4096         }
4097
4098         priv->is_open = 1;
4099         IWL_DEBUG_MAC80211("leave\n");
4100         return 0;
4101
4102 out_release_irq:
4103         free_irq(priv->pci_dev->irq, priv);
4104 out_disable_msi:
4105         pci_disable_msi(priv->pci_dev);
4106         pci_disable_device(priv->pci_dev);
4107         priv->is_open = 0;
4108         IWL_DEBUG_MAC80211("leave - failed\n");
4109         return ret;
4110 }
4111
4112 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
4113 {
4114         struct iwl_priv *priv = hw->priv;
4115
4116         IWL_DEBUG_MAC80211("enter\n");
4117
4118         if (!priv->is_open) {
4119                 IWL_DEBUG_MAC80211("leave - skip\n");
4120                 return;
4121         }
4122
4123         priv->is_open = 0;
4124
4125         if (iwl_is_ready_rf(priv)) {
4126                 /* stop mac, cancel any scan request and clear
4127                  * RXON_FILTER_ASSOC_MSK BIT
4128                  */
4129                 mutex_lock(&priv->mutex);
4130                 iwl4965_scan_cancel_timeout(priv, 100);
4131                 cancel_delayed_work(&priv->post_associate);
4132                 mutex_unlock(&priv->mutex);
4133         }
4134
4135         iwl4965_down(priv);
4136
4137         flush_workqueue(priv->workqueue);
4138         free_irq(priv->pci_dev->irq, priv);
4139         pci_disable_msi(priv->pci_dev);
4140         pci_save_state(priv->pci_dev);
4141         pci_disable_device(priv->pci_dev);
4142
4143         IWL_DEBUG_MAC80211("leave\n");
4144 }
4145
4146 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4147 {
4148         struct iwl_priv *priv = hw->priv;
4149
4150         IWL_DEBUG_MAC80211("enter\n");
4151
4152         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4153                 IWL_DEBUG_MAC80211("leave - monitor\n");
4154                 return -1;
4155         }
4156
4157         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4158                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4159
4160         if (iwl_tx_skb(priv, skb))
4161                 dev_kfree_skb_any(skb);
4162
4163         IWL_DEBUG_MAC80211("leave\n");
4164         return 0;
4165 }
4166
4167 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
4168                                  struct ieee80211_if_init_conf *conf)
4169 {
4170         struct iwl_priv *priv = hw->priv;
4171         unsigned long flags;
4172         DECLARE_MAC_BUF(mac);
4173
4174         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4175
4176         if (priv->vif) {
4177                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4178                 return -EOPNOTSUPP;
4179         }
4180
4181         spin_lock_irqsave(&priv->lock, flags);
4182         priv->vif = conf->vif;
4183
4184         spin_unlock_irqrestore(&priv->lock, flags);
4185
4186         mutex_lock(&priv->mutex);
4187
4188         if (conf->mac_addr) {
4189                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4190                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4191         }
4192
4193         if (iwl_is_ready(priv))
4194                 iwl4965_set_mode(priv, conf->type);
4195
4196         mutex_unlock(&priv->mutex);
4197
4198         IWL_DEBUG_MAC80211("leave\n");
4199         return 0;
4200 }
4201
4202 /**
4203  * iwl4965_mac_config - mac80211 config callback
4204  *
4205  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4206  * be set inappropriately and the driver currently sets the hardware up to
4207  * use it whenever needed.
4208  */
4209 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
4210 {
4211         struct iwl_priv *priv = hw->priv;
4212         const struct iwl_channel_info *ch_info;
4213         unsigned long flags;
4214         int ret = 0;
4215
4216         mutex_lock(&priv->mutex);
4217         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4218
4219         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
4220
4221         if (!iwl_is_ready(priv)) {
4222                 IWL_DEBUG_MAC80211("leave - not ready\n");
4223                 ret = -EIO;
4224                 goto out;
4225         }
4226
4227         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
4228                      test_bit(STATUS_SCANNING, &priv->status))) {
4229                 IWL_DEBUG_MAC80211("leave - scanning\n");
4230                 set_bit(STATUS_CONF_PENDING, &priv->status);
4231                 mutex_unlock(&priv->mutex);
4232                 return 0;
4233         }
4234
4235         spin_lock_irqsave(&priv->lock, flags);
4236
4237         ch_info = iwl_get_channel_info(priv, conf->channel->band,
4238                         ieee80211_frequency_to_channel(conf->channel->center_freq));
4239         if (!is_channel_valid(ch_info)) {
4240                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4241                 spin_unlock_irqrestore(&priv->lock, flags);
4242                 ret = -EINVAL;
4243                 goto out;
4244         }
4245
4246 #ifdef CONFIG_IWL4965_HT
4247         /* if we are switching from ht to 2.4 clear flags
4248          * from any ht related info since 2.4 does not
4249          * support ht */
4250         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
4251 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4252             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
4253 #endif
4254         )
4255                 priv->staging_rxon.flags = 0;
4256 #endif /* CONFIG_IWL4965_HT */
4257
4258         iwl_set_rxon_channel(priv, conf->channel->band,
4259                 ieee80211_frequency_to_channel(conf->channel->center_freq));
4260
4261         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
4262
4263         /* The list of supported rates and rate mask can be different
4264          * for each band; since the band may have changed, reset
4265          * the rate mask to what mac80211 lists */
4266         iwl4965_set_rate(priv);
4267
4268         spin_unlock_irqrestore(&priv->lock, flags);
4269
4270 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4271         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4272                 iwl4965_hw_channel_switch(priv, conf->channel);
4273                 goto out;
4274         }
4275 #endif
4276
4277         if (priv->cfg->ops->lib->radio_kill_sw)
4278                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
4279
4280         if (!conf->radio_enabled) {
4281                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4282                 goto out;
4283         }
4284
4285         if (iwl_is_rfkill(priv)) {
4286                 IWL_DEBUG_MAC80211("leave - RF kill\n");
4287                 ret = -EIO;
4288                 goto out;
4289         }
4290
4291         iwl4965_set_rate(priv);
4292
4293         if (memcmp(&priv->active_rxon,
4294                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
4295                 iwl4965_commit_rxon(priv);
4296         else
4297                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4298
4299         IWL_DEBUG_MAC80211("leave\n");
4300
4301 out:
4302         clear_bit(STATUS_CONF_PENDING, &priv->status);
4303         mutex_unlock(&priv->mutex);
4304         return ret;
4305 }
4306
4307 static void iwl4965_config_ap(struct iwl_priv *priv)
4308 {
4309         int ret = 0;
4310
4311         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4312                 return;
4313
4314         /* The following should be done only at AP bring up */
4315         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4316
4317                 /* RXON - unassoc (to set timing command) */
4318                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4319                 iwl4965_commit_rxon(priv);
4320
4321                 /* RXON Timing */
4322                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4323                 iwl4965_setup_rxon_timing(priv);
4324                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4325                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
4326                 if (ret)
4327                         IWL_WARNING("REPLY_RXON_TIMING failed - "
4328                                         "Attempting to continue.\n");
4329
4330                 iwl_set_rxon_chain(priv);
4331
4332                 /* FIXME: what should be the assoc_id for AP? */
4333                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4334                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4335                         priv->staging_rxon.flags |=
4336                                 RXON_FLG_SHORT_PREAMBLE_MSK;
4337                 else
4338                         priv->staging_rxon.flags &=
4339                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4340
4341                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4342                         if (priv->assoc_capability &
4343                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4344                                 priv->staging_rxon.flags |=
4345                                         RXON_FLG_SHORT_SLOT_MSK;
4346                         else
4347                                 priv->staging_rxon.flags &=
4348                                         ~RXON_FLG_SHORT_SLOT_MSK;
4349
4350                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4351                                 priv->staging_rxon.flags &=
4352                                         ~RXON_FLG_SHORT_SLOT_MSK;
4353                 }
4354                 /* restore RXON assoc */
4355                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4356                 iwl4965_commit_rxon(priv);
4357                 iwl4965_activate_qos(priv, 1);
4358                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4359         }
4360         iwl4965_send_beacon_cmd(priv);
4361
4362         /* FIXME - we need to add code here to detect a totally new
4363          * configuration, reset the AP, unassoc, rxon timing, assoc,
4364          * clear sta table, add BCAST sta... */
4365 }
4366
4367 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4368                                         struct ieee80211_vif *vif,
4369                                     struct ieee80211_if_conf *conf)
4370 {
4371         struct iwl_priv *priv = hw->priv;
4372         DECLARE_MAC_BUF(mac);
4373         unsigned long flags;
4374         int rc;
4375
4376         if (conf == NULL)
4377                 return -EIO;
4378
4379         if (priv->vif != vif) {
4380                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4381                 return 0;
4382         }
4383
4384         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4385             (!conf->beacon || !conf->ssid_len)) {
4386                 IWL_DEBUG_MAC80211
4387                     ("Leaving in AP mode because HostAPD is not ready.\n");
4388                 return 0;
4389         }
4390
4391         if (!iwl_is_alive(priv))
4392                 return -EAGAIN;
4393
4394         mutex_lock(&priv->mutex);
4395
4396         if (conf->bssid)
4397                 IWL_DEBUG_MAC80211("bssid: %s\n",
4398                                    print_mac(mac, conf->bssid));
4399
4400 /*
4401  * very dubious code was here; the probe filtering flag is never set:
4402  *
4403         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4404             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4405  */
4406
4407         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4408                 if (!conf->bssid) {
4409                         conf->bssid = priv->mac_addr;
4410                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4411                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4412                                            print_mac(mac, conf->bssid));
4413                 }
4414                 if (priv->ibss_beacon)
4415                         dev_kfree_skb(priv->ibss_beacon);
4416
4417                 priv->ibss_beacon = conf->beacon;
4418         }
4419
4420         if (iwl_is_rfkill(priv))
4421                 goto done;
4422
4423         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4424             !is_multicast_ether_addr(conf->bssid)) {
4425                 /* If there is currently a HW scan going on in the background
4426                  * then we need to cancel it else the RXON below will fail. */
4427                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4428                         IWL_WARNING("Aborted scan still in progress "
4429                                     "after 100ms\n");
4430                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4431                         mutex_unlock(&priv->mutex);
4432                         return -EAGAIN;
4433                 }
4434                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4435
4436                 /* TODO: Audit driver for usage of these members and see
4437                  * if mac80211 deprecates them (priv->bssid looks like it
4438                  * shouldn't be there, but I haven't scanned the IBSS code
4439                  * to verify) - jpk */
4440                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4441
4442                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4443                         iwl4965_config_ap(priv);
4444                 else {
4445                         rc = iwl4965_commit_rxon(priv);
4446                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4447                                 iwl_rxon_add_station(
4448                                         priv, priv->active_rxon.bssid_addr, 1);
4449                 }
4450
4451         } else {
4452                 iwl4965_scan_cancel_timeout(priv, 100);
4453                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4454                 iwl4965_commit_rxon(priv);
4455         }
4456
4457  done:
4458         spin_lock_irqsave(&priv->lock, flags);
4459         if (!conf->ssid_len)
4460                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4461         else
4462                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4463
4464         priv->essid_len = conf->ssid_len;
4465         spin_unlock_irqrestore(&priv->lock, flags);
4466
4467         IWL_DEBUG_MAC80211("leave\n");
4468         mutex_unlock(&priv->mutex);
4469
4470         return 0;
4471 }
4472
4473 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4474                                  unsigned int changed_flags,
4475                                  unsigned int *total_flags,
4476                                  int mc_count, struct dev_addr_list *mc_list)
4477 {
4478         /*
4479          * XXX: dummy
4480          * see also iwl4965_connection_init_rx_config
4481          */
4482         struct iwl_priv *priv = hw->priv;
4483         int new_flags = 0;
4484         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4485                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4486                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4487                                            IEEE80211_IF_TYPE_MNTR,
4488                                            changed_flags, *total_flags);
4489                         /* queue work 'cuz mac80211 is holding a lock which
4490                          * prevents us from issuing (synchronous) f/w cmds */
4491                         queue_work(priv->workqueue, &priv->set_monitor);
4492                         new_flags &= FIF_PROMISC_IN_BSS |
4493                                      FIF_OTHER_BSS |
4494                                      FIF_ALLMULTI;
4495                 }
4496         }
4497         *total_flags = new_flags;
4498 }
4499
4500 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4501                                      struct ieee80211_if_init_conf *conf)
4502 {
4503         struct iwl_priv *priv = hw->priv;
4504
4505         IWL_DEBUG_MAC80211("enter\n");
4506
4507         mutex_lock(&priv->mutex);
4508
4509         if (iwl_is_ready_rf(priv)) {
4510                 iwl4965_scan_cancel_timeout(priv, 100);
4511                 cancel_delayed_work(&priv->post_associate);
4512                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4513                 iwl4965_commit_rxon(priv);
4514         }
4515         if (priv->vif == conf->vif) {
4516                 priv->vif = NULL;
4517                 memset(priv->bssid, 0, ETH_ALEN);
4518                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4519                 priv->essid_len = 0;
4520         }
4521         mutex_unlock(&priv->mutex);
4522
4523         IWL_DEBUG_MAC80211("leave\n");
4524
4525 }
4526
4527 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4528 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4529                                      struct ieee80211_vif *vif,
4530                                      struct ieee80211_bss_conf *bss_conf,
4531                                      u32 changes)
4532 {
4533         struct iwl_priv *priv = hw->priv;
4534
4535         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4536
4537         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4538                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4539                                    bss_conf->use_short_preamble);
4540                 if (bss_conf->use_short_preamble)
4541                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4542                 else
4543                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4544         }
4545
4546         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4547                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4548                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4549                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4550                 else
4551                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4552         }
4553
4554         if (changes & BSS_CHANGED_HT) {
4555                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4556                 iwl4965_ht_conf(priv, bss_conf);
4557                 iwl_set_rxon_chain(priv);
4558         }
4559
4560         if (changes & BSS_CHANGED_ASSOC) {
4561                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4562                 /* This should never happen as this function should
4563                  * never be called from interrupt context. */
4564                 if (WARN_ON_ONCE(in_interrupt()))
4565                         return;
4566                 if (bss_conf->assoc) {
4567                         priv->assoc_id = bss_conf->aid;
4568                         priv->beacon_int = bss_conf->beacon_int;
4569                         priv->timestamp = bss_conf->timestamp;
4570                         priv->assoc_capability = bss_conf->assoc_capability;
4571                         priv->next_scan_jiffies = jiffies +
4572                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4573                         mutex_lock(&priv->mutex);
4574                         iwl4965_post_associate(priv);
4575                         mutex_unlock(&priv->mutex);
4576                 } else {
4577                         priv->assoc_id = 0;
4578                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4579                 }
4580         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4581                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4582                         iwl_send_rxon_assoc(priv);
4583         }
4584
4585 }
4586
4587 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4588 {
4589         int rc = 0;
4590         unsigned long flags;
4591         struct iwl_priv *priv = hw->priv;
4592
4593         IWL_DEBUG_MAC80211("enter\n");
4594
4595         mutex_lock(&priv->mutex);
4596         spin_lock_irqsave(&priv->lock, flags);
4597
4598         if (!iwl_is_ready_rf(priv)) {
4599                 rc = -EIO;
4600                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4601                 goto out_unlock;
4602         }
4603
4604         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4605                 rc = -EIO;
4606                 IWL_ERROR("ERROR: APs don't scan\n");
4607                 goto out_unlock;
4608         }
4609
4610         /* we don't schedule scan within next_scan_jiffies period */
4611         if (priv->next_scan_jiffies &&
4612                         time_after(priv->next_scan_jiffies, jiffies)) {
4613                 rc = -EAGAIN;
4614                 goto out_unlock;
4615         }
4616         /* if we just finished scan ask for delay */
4617         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4618                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4619                 rc = -EAGAIN;
4620                 goto out_unlock;
4621         }
4622         if (len) {
4623                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4624                                iwl4965_escape_essid(ssid, len), (int)len);
4625
4626                 priv->one_direct_scan = 1;
4627                 priv->direct_ssid_len = (u8)
4628                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4629                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4630         } else
4631                 priv->one_direct_scan = 0;
4632
4633         rc = iwl4965_scan_initiate(priv);
4634
4635         IWL_DEBUG_MAC80211("leave\n");
4636
4637 out_unlock:
4638         spin_unlock_irqrestore(&priv->lock, flags);
4639         mutex_unlock(&priv->mutex);
4640
4641         return rc;
4642 }
4643
4644 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4645                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4646                         u32 iv32, u16 *phase1key)
4647 {
4648         struct iwl_priv *priv = hw->priv;
4649         u8 sta_id = IWL_INVALID_STATION;
4650         unsigned long flags;
4651         __le16 key_flags = 0;
4652         int i;
4653         DECLARE_MAC_BUF(mac);
4654
4655         IWL_DEBUG_MAC80211("enter\n");
4656
4657         sta_id = iwl_find_station(priv, addr);
4658         if (sta_id == IWL_INVALID_STATION) {
4659                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4660                                    print_mac(mac, addr));
4661                 return;
4662         }
4663
4664         iwl4965_scan_cancel_timeout(priv, 100);
4665
4666         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4667         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4668         key_flags &= ~STA_KEY_FLG_INVALID;
4669
4670         if (sta_id == priv->hw_params.bcast_sta_id)
4671                 key_flags |= STA_KEY_MULTICAST_MSK;
4672
4673         spin_lock_irqsave(&priv->sta_lock, flags);
4674
4675         priv->stations[sta_id].sta.key.key_flags = key_flags;
4676         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4677
4678         for (i = 0; i < 5; i++)
4679                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4680                         cpu_to_le16(phase1key[i]);
4681
4682         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4683         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4684
4685         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4686
4687         spin_unlock_irqrestore(&priv->sta_lock, flags);
4688
4689         IWL_DEBUG_MAC80211("leave\n");
4690 }
4691
4692 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4693                            const u8 *local_addr, const u8 *addr,
4694                            struct ieee80211_key_conf *key)
4695 {
4696         struct iwl_priv *priv = hw->priv;
4697         DECLARE_MAC_BUF(mac);
4698         int ret = 0;
4699         u8 sta_id = IWL_INVALID_STATION;
4700         u8 is_default_wep_key = 0;
4701
4702         IWL_DEBUG_MAC80211("enter\n");
4703
4704         if (priv->hw_params.sw_crypto) {
4705                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4706                 return -EOPNOTSUPP;
4707         }
4708
4709         if (is_zero_ether_addr(addr))
4710                 /* only support pairwise keys */
4711                 return -EOPNOTSUPP;
4712
4713         sta_id = iwl_find_station(priv, addr);
4714         if (sta_id == IWL_INVALID_STATION) {
4715                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4716                                    print_mac(mac, addr));
4717                 return -EINVAL;
4718
4719         }
4720
4721         mutex_lock(&priv->mutex);
4722         iwl4965_scan_cancel_timeout(priv, 100);
4723         mutex_unlock(&priv->mutex);
4724
4725         /* If we are getting WEP group key and we didn't receive any key mapping
4726          * so far, we are in legacy wep mode (group key only), otherwise we are
4727          * in 1X mode.
4728          * In legacy wep mode, we use another host command to the uCode */
4729         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4730                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4731                 if (cmd == SET_KEY)
4732                         is_default_wep_key = !priv->key_mapping_key;
4733                 else
4734                         is_default_wep_key =
4735                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4736         }
4737
4738         switch (cmd) {
4739         case SET_KEY:
4740                 if (is_default_wep_key)
4741                         ret = iwl_set_default_wep_key(priv, key);
4742                 else
4743                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4744
4745                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4746                 break;
4747         case DISABLE_KEY:
4748                 if (is_default_wep_key)
4749                         ret = iwl_remove_default_wep_key(priv, key);
4750                 else
4751                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4752
4753                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4754                 break;
4755         default:
4756                 ret = -EINVAL;
4757         }
4758
4759         IWL_DEBUG_MAC80211("leave\n");
4760
4761         return ret;
4762 }
4763
4764 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4765                            const struct ieee80211_tx_queue_params *params)
4766 {
4767         struct iwl_priv *priv = hw->priv;
4768         unsigned long flags;
4769         int q;
4770
4771         IWL_DEBUG_MAC80211("enter\n");
4772
4773         if (!iwl_is_ready_rf(priv)) {
4774                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4775                 return -EIO;
4776         }
4777
4778         if (queue >= AC_NUM) {
4779                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4780                 return 0;
4781         }
4782
4783         if (!priv->qos_data.qos_enable) {
4784                 priv->qos_data.qos_active = 0;
4785                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4786                 return 0;
4787         }
4788         q = AC_NUM - 1 - queue;
4789
4790         spin_lock_irqsave(&priv->lock, flags);
4791
4792         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4793         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4794         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4795         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4796                         cpu_to_le16((params->txop * 32));
4797
4798         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4799         priv->qos_data.qos_active = 1;
4800
4801         spin_unlock_irqrestore(&priv->lock, flags);
4802
4803         mutex_lock(&priv->mutex);
4804         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4805                 iwl4965_activate_qos(priv, 1);
4806         else if (priv->assoc_id && iwl_is_associated(priv))
4807                 iwl4965_activate_qos(priv, 0);
4808
4809         mutex_unlock(&priv->mutex);
4810
4811         IWL_DEBUG_MAC80211("leave\n");
4812         return 0;
4813 }
4814
4815 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4816                                 struct ieee80211_tx_queue_stats *stats)
4817 {
4818         struct iwl_priv *priv = hw->priv;
4819         int i, avail;
4820         struct iwl_tx_queue *txq;
4821         struct iwl_queue *q;
4822         unsigned long flags;
4823
4824         IWL_DEBUG_MAC80211("enter\n");
4825
4826         if (!iwl_is_ready_rf(priv)) {
4827                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4828                 return -EIO;
4829         }
4830
4831         spin_lock_irqsave(&priv->lock, flags);
4832
4833         for (i = 0; i < AC_NUM; i++) {
4834                 txq = &priv->txq[i];
4835                 q = &txq->q;
4836                 avail = iwl_queue_space(q);
4837
4838                 stats[i].len = q->n_window - avail;
4839                 stats[i].limit = q->n_window - q->high_mark;
4840                 stats[i].count = q->n_window;
4841
4842         }
4843         spin_unlock_irqrestore(&priv->lock, flags);
4844
4845         IWL_DEBUG_MAC80211("leave\n");
4846
4847         return 0;
4848 }
4849
4850 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4851                              struct ieee80211_low_level_stats *stats)
4852 {
4853         struct iwl_priv *priv = hw->priv;
4854
4855         priv = hw->priv;
4856         IWL_DEBUG_MAC80211("enter\n");
4857         IWL_DEBUG_MAC80211("leave\n");
4858
4859         return 0;
4860 }
4861
4862 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4863 {
4864         struct iwl_priv *priv;
4865
4866         priv = hw->priv;
4867         IWL_DEBUG_MAC80211("enter\n");
4868         IWL_DEBUG_MAC80211("leave\n");
4869
4870         return 0;
4871 }
4872
4873 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4874 {
4875         struct iwl_priv *priv = hw->priv;
4876         unsigned long flags;
4877
4878         mutex_lock(&priv->mutex);
4879         IWL_DEBUG_MAC80211("enter\n");
4880
4881         priv->lq_mngr.lq_ready = 0;
4882 #ifdef CONFIG_IWL4965_HT
4883         spin_lock_irqsave(&priv->lock, flags);
4884         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4885         spin_unlock_irqrestore(&priv->lock, flags);
4886 #endif /* CONFIG_IWL4965_HT */
4887
4888         iwl_reset_qos(priv);
4889
4890         cancel_delayed_work(&priv->post_associate);
4891
4892         spin_lock_irqsave(&priv->lock, flags);
4893         priv->assoc_id = 0;
4894         priv->assoc_capability = 0;
4895         priv->assoc_station_added = 0;
4896
4897         /* new association get rid of ibss beacon skb */
4898         if (priv->ibss_beacon)
4899                 dev_kfree_skb(priv->ibss_beacon);
4900
4901         priv->ibss_beacon = NULL;
4902
4903         priv->beacon_int = priv->hw->conf.beacon_int;
4904         priv->timestamp = 0;
4905         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4906                 priv->beacon_int = 0;
4907
4908         spin_unlock_irqrestore(&priv->lock, flags);
4909
4910         if (!iwl_is_ready_rf(priv)) {
4911                 IWL_DEBUG_MAC80211("leave - not ready\n");
4912                 mutex_unlock(&priv->mutex);
4913                 return;
4914         }
4915
4916         /* we are restarting association process
4917          * clear RXON_FILTER_ASSOC_MSK bit
4918          */
4919         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4920                 iwl4965_scan_cancel_timeout(priv, 100);
4921                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4922                 iwl4965_commit_rxon(priv);
4923         }
4924
4925         iwl_power_update_mode(priv, 0);
4926
4927         /* Per mac80211.h: This is only used in IBSS mode... */
4928         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4929
4930                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4931                 mutex_unlock(&priv->mutex);
4932                 return;
4933         }
4934
4935         iwl4965_set_rate(priv);
4936
4937         mutex_unlock(&priv->mutex);
4938
4939         IWL_DEBUG_MAC80211("leave\n");
4940 }
4941
4942 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4943 {
4944         struct iwl_priv *priv = hw->priv;
4945         unsigned long flags;
4946
4947         mutex_lock(&priv->mutex);
4948         IWL_DEBUG_MAC80211("enter\n");
4949
4950         if (!iwl_is_ready_rf(priv)) {
4951                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4952                 mutex_unlock(&priv->mutex);
4953                 return -EIO;
4954         }
4955
4956         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4957                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4958                 mutex_unlock(&priv->mutex);
4959                 return -EIO;
4960         }
4961
4962         spin_lock_irqsave(&priv->lock, flags);
4963
4964         if (priv->ibss_beacon)
4965                 dev_kfree_skb(priv->ibss_beacon);
4966
4967         priv->ibss_beacon = skb;
4968
4969         priv->assoc_id = 0;
4970
4971         IWL_DEBUG_MAC80211("leave\n");
4972         spin_unlock_irqrestore(&priv->lock, flags);
4973
4974         iwl_reset_qos(priv);
4975
4976         queue_work(priv->workqueue, &priv->post_associate.work);
4977
4978         mutex_unlock(&priv->mutex);
4979
4980         return 0;
4981 }
4982
4983 /*****************************************************************************
4984  *
4985  * sysfs attributes
4986  *
4987  *****************************************************************************/
4988
4989 #ifdef CONFIG_IWLWIFI_DEBUG
4990
4991 /*
4992  * The following adds a new attribute to the sysfs representation
4993  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4994  * used for controlling the debug level.
4995  *
4996  * See the level definitions in iwl for details.
4997  */
4998
4999 static ssize_t show_debug_level(struct device *d,
5000                                 struct device_attribute *attr, char *buf)
5001 {
5002         struct iwl_priv *priv = d->driver_data;
5003
5004         return sprintf(buf, "0x%08X\n", priv->debug_level);
5005 }
5006 static ssize_t store_debug_level(struct device *d,
5007                                 struct device_attribute *attr,
5008                                  const char *buf, size_t count)
5009 {
5010         struct iwl_priv *priv = d->driver_data;
5011         char *p = (char *)buf;
5012         u32 val;
5013
5014         val = simple_strtoul(p, &p, 0);
5015         if (p == buf)
5016                 printk(KERN_INFO DRV_NAME
5017                        ": %s is not in hex or decimal form.\n", buf);
5018         else
5019                 priv->debug_level = val;
5020
5021         return strnlen(buf, count);
5022 }
5023
5024 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5025                         show_debug_level, store_debug_level);
5026
5027
5028 #endif /* CONFIG_IWLWIFI_DEBUG */
5029
5030
5031 static ssize_t show_version(struct device *d,
5032                                 struct device_attribute *attr, char *buf)
5033 {
5034         struct iwl_priv *priv = d->driver_data;
5035         struct iwl_alive_resp *palive = &priv->card_alive;
5036
5037         if (palive->is_valid)
5038                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5039                                     "fw type: 0x%01X 0x%01X\n",
5040                                 palive->ucode_major, palive->ucode_minor,
5041                                 palive->sw_rev[0], palive->sw_rev[1],
5042                                 palive->ver_type, palive->ver_subtype);
5043
5044         else
5045                 return sprintf(buf, "fw not loaded\n");
5046 }
5047
5048 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5049
5050 static ssize_t show_temperature(struct device *d,
5051                                 struct device_attribute *attr, char *buf)
5052 {
5053         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5054
5055         if (!iwl_is_alive(priv))
5056                 return -EAGAIN;
5057
5058         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
5059 }
5060
5061 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5062
5063 static ssize_t show_rs_window(struct device *d,
5064                               struct device_attribute *attr,
5065                               char *buf)
5066 {
5067         struct iwl_priv *priv = d->driver_data;
5068         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
5069 }
5070 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5071
5072 static ssize_t show_tx_power(struct device *d,
5073                              struct device_attribute *attr, char *buf)
5074 {
5075         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5076         return sprintf(buf, "%d\n", priv->user_txpower_limit);
5077 }
5078
5079 static ssize_t store_tx_power(struct device *d,
5080                               struct device_attribute *attr,
5081                               const char *buf, size_t count)
5082 {
5083         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5084         char *p = (char *)buf;
5085         u32 val;
5086
5087         val = simple_strtoul(p, &p, 10);
5088         if (p == buf)
5089                 printk(KERN_INFO DRV_NAME
5090                        ": %s is not in decimal form.\n", buf);
5091         else
5092                 iwl4965_hw_reg_set_txpower(priv, val);
5093
5094         return count;
5095 }
5096
5097 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5098
5099 static ssize_t show_flags(struct device *d,
5100                           struct device_attribute *attr, char *buf)
5101 {
5102         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5103
5104         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5105 }
5106
5107 static ssize_t store_flags(struct device *d,
5108                            struct device_attribute *attr,
5109                            const char *buf, size_t count)
5110 {
5111         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5112         u32 flags = simple_strtoul(buf, NULL, 0);
5113
5114         mutex_lock(&priv->mutex);
5115         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5116                 /* Cancel any currently running scans... */
5117                 if (iwl4965_scan_cancel_timeout(priv, 100))
5118                         IWL_WARNING("Could not cancel scan.\n");
5119                 else {
5120                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5121                                        flags);
5122                         priv->staging_rxon.flags = cpu_to_le32(flags);
5123                         iwl4965_commit_rxon(priv);
5124                 }
5125         }
5126         mutex_unlock(&priv->mutex);
5127
5128         return count;
5129 }
5130
5131 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5132
5133 static ssize_t show_filter_flags(struct device *d,
5134                                  struct device_attribute *attr, char *buf)
5135 {
5136         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5137
5138         return sprintf(buf, "0x%04X\n",
5139                 le32_to_cpu(priv->active_rxon.filter_flags));
5140 }
5141
5142 static ssize_t store_filter_flags(struct device *d,
5143                                   struct device_attribute *attr,
5144                                   const char *buf, size_t count)
5145 {
5146         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5147         u32 filter_flags = simple_strtoul(buf, NULL, 0);
5148
5149         mutex_lock(&priv->mutex);
5150         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5151                 /* Cancel any currently running scans... */
5152                 if (iwl4965_scan_cancel_timeout(priv, 100))
5153                         IWL_WARNING("Could not cancel scan.\n");
5154                 else {
5155                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5156                                        "0x%04X\n", filter_flags);
5157                         priv->staging_rxon.filter_flags =
5158                                 cpu_to_le32(filter_flags);
5159                         iwl4965_commit_rxon(priv);
5160                 }
5161         }
5162         mutex_unlock(&priv->mutex);
5163
5164         return count;
5165 }
5166
5167 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5168                    store_filter_flags);
5169
5170 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5171
5172 static ssize_t show_measurement(struct device *d,
5173                                 struct device_attribute *attr, char *buf)
5174 {
5175         struct iwl_priv *priv = dev_get_drvdata(d);
5176         struct iwl4965_spectrum_notification measure_report;
5177         u32 size = sizeof(measure_report), len = 0, ofs = 0;
5178         u8 *data = (u8 *) & measure_report;
5179         unsigned long flags;
5180
5181         spin_lock_irqsave(&priv->lock, flags);
5182         if (!(priv->measurement_status & MEASUREMENT_READY)) {
5183                 spin_unlock_irqrestore(&priv->lock, flags);
5184                 return 0;
5185         }
5186         memcpy(&measure_report, &priv->measure_report, size);
5187         priv->measurement_status = 0;
5188         spin_unlock_irqrestore(&priv->lock, flags);
5189
5190         while (size && (PAGE_SIZE - len)) {
5191                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5192                                    PAGE_SIZE - len, 1);
5193                 len = strlen(buf);
5194                 if (PAGE_SIZE - len)
5195                         buf[len++] = '\n';
5196
5197                 ofs += 16;
5198                 size -= min(size, 16U);
5199         }
5200
5201         return len;
5202 }
5203
5204 static ssize_t store_measurement(struct device *d,
5205                                  struct device_attribute *attr,
5206                                  const char *buf, size_t count)
5207 {
5208         struct iwl_priv *priv = dev_get_drvdata(d);
5209         struct ieee80211_measurement_params params = {
5210                 .channel = le16_to_cpu(priv->active_rxon.channel),
5211                 .start_time = cpu_to_le64(priv->last_tsf),
5212                 .duration = cpu_to_le16(1),
5213         };
5214         u8 type = IWL_MEASURE_BASIC;
5215         u8 buffer[32];
5216         u8 channel;
5217
5218         if (count) {
5219                 char *p = buffer;
5220                 strncpy(buffer, buf, min(sizeof(buffer), count));
5221                 channel = simple_strtoul(p, NULL, 0);
5222                 if (channel)
5223                         params.channel = channel;
5224
5225                 p = buffer;
5226                 while (*p && *p != ' ')
5227                         p++;
5228                 if (*p)
5229                         type = simple_strtoul(p + 1, NULL, 0);
5230         }
5231
5232         IWL_DEBUG_INFO("Invoking measurement of type %d on "
5233                        "channel %d (for '%s')\n", type, params.channel, buf);
5234         iwl4965_get_measurement(priv, &params, type);
5235
5236         return count;
5237 }
5238
5239 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5240                    show_measurement, store_measurement);
5241 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
5242
5243 static ssize_t store_retry_rate(struct device *d,
5244                                 struct device_attribute *attr,
5245                                 const char *buf, size_t count)
5246 {
5247         struct iwl_priv *priv = dev_get_drvdata(d);
5248
5249         priv->retry_rate = simple_strtoul(buf, NULL, 0);
5250         if (priv->retry_rate <= 0)
5251                 priv->retry_rate = 1;
5252
5253         return count;
5254 }
5255
5256 static ssize_t show_retry_rate(struct device *d,
5257                                struct device_attribute *attr, char *buf)
5258 {
5259         struct iwl_priv *priv = dev_get_drvdata(d);
5260         return sprintf(buf, "%d", priv->retry_rate);
5261 }
5262
5263 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5264                    store_retry_rate);
5265
5266 static ssize_t store_power_level(struct device *d,
5267                                  struct device_attribute *attr,
5268                                  const char *buf, size_t count)
5269 {
5270         struct iwl_priv *priv = dev_get_drvdata(d);
5271         int rc;
5272         int mode;
5273
5274         mode = simple_strtoul(buf, NULL, 0);
5275         mutex_lock(&priv->mutex);
5276
5277         if (!iwl_is_ready(priv)) {
5278                 rc = -EAGAIN;
5279                 goto out;
5280         }
5281
5282         rc = iwl_power_set_user_mode(priv, mode);
5283         if (rc) {
5284                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5285                 goto out;
5286         }
5287         rc = count;
5288
5289  out:
5290         mutex_unlock(&priv->mutex);
5291         return rc;
5292 }
5293
5294 #define MAX_WX_STRING 80
5295
5296 /* Values are in microsecond */
5297 static const s32 timeout_duration[] = {
5298         350000,
5299         250000,
5300         75000,
5301         37000,
5302         25000,
5303 };
5304 static const s32 period_duration[] = {
5305         400000,
5306         700000,
5307         1000000,
5308         1000000,
5309         1000000
5310 };
5311
5312 static ssize_t show_power_level(struct device *d,
5313                                 struct device_attribute *attr, char *buf)
5314 {
5315         struct iwl_priv *priv = dev_get_drvdata(d);
5316         int level = priv->power_data.power_mode;
5317         char *p = buf;
5318
5319         p += sprintf(p, "%d ", level);
5320         switch (level) {
5321         case IWL_POWER_MODE_CAM:
5322         case IWL_POWER_AC:
5323                 p += sprintf(p, "(AC)");
5324                 break;
5325         case IWL_POWER_BATTERY:
5326                 p += sprintf(p, "(BATTERY)");
5327                 break;
5328         default:
5329                 p += sprintf(p,
5330                              "(Timeout %dms, Period %dms)",
5331                              timeout_duration[level - 1] / 1000,
5332                              period_duration[level - 1] / 1000);
5333         }
5334 /*
5335         if (!(priv->power_mode & IWL_POWER_ENABLED))
5336                 p += sprintf(p, " OFF\n");
5337         else
5338                 p += sprintf(p, " \n");
5339 */
5340         p += sprintf(p, " \n");
5341         return (p - buf + 1);
5342 }
5343
5344 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5345                    store_power_level);
5346
5347 static ssize_t show_channels(struct device *d,
5348                              struct device_attribute *attr, char *buf)
5349 {
5350         /* all this shit doesn't belong into sysfs anyway */
5351         return 0;
5352 }
5353
5354 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5355
5356 static ssize_t show_statistics(struct device *d,
5357                                struct device_attribute *attr, char *buf)
5358 {
5359         struct iwl_priv *priv = dev_get_drvdata(d);
5360         u32 size = sizeof(struct iwl4965_notif_statistics);
5361         u32 len = 0, ofs = 0;
5362         u8 *data = (u8 *) & priv->statistics;
5363         int rc = 0;
5364
5365         if (!iwl_is_alive(priv))
5366                 return -EAGAIN;
5367
5368         mutex_lock(&priv->mutex);
5369         rc = iwl_send_statistics_request(priv, 0);
5370         mutex_unlock(&priv->mutex);
5371
5372         if (rc) {
5373                 len = sprintf(buf,
5374                               "Error sending statistics request: 0x%08X\n", rc);
5375                 return len;
5376         }
5377
5378         while (size && (PAGE_SIZE - len)) {
5379                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5380                                    PAGE_SIZE - len, 1);
5381                 len = strlen(buf);
5382                 if (PAGE_SIZE - len)
5383                         buf[len++] = '\n';
5384
5385                 ofs += 16;
5386                 size -= min(size, 16U);
5387         }
5388
5389         return len;
5390 }
5391
5392 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5393
5394 static ssize_t show_status(struct device *d,
5395                            struct device_attribute *attr, char *buf)
5396 {
5397         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5398         if (!iwl_is_alive(priv))
5399                 return -EAGAIN;
5400         return sprintf(buf, "0x%08x\n", (int)priv->status);
5401 }
5402
5403 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5404
5405 /*****************************************************************************
5406  *
5407  * driver setup and teardown
5408  *
5409  *****************************************************************************/
5410
5411 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5412 {
5413         priv->workqueue = create_workqueue(DRV_NAME);
5414
5415         init_waitqueue_head(&priv->wait_command_queue);
5416
5417         INIT_WORK(&priv->up, iwl4965_bg_up);
5418         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5419         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5420         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5421         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5422         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5423         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5424         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5425         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5426         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5427         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5428         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5429         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5430
5431         iwl4965_hw_setup_deferred_work(priv);
5432
5433         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5434                      iwl4965_irq_tasklet, (unsigned long)priv);
5435 }
5436
5437 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5438 {
5439         iwl4965_hw_cancel_deferred_work(priv);
5440
5441         cancel_delayed_work_sync(&priv->init_alive_start);
5442         cancel_delayed_work(&priv->scan_check);
5443         cancel_delayed_work(&priv->alive_start);
5444         cancel_delayed_work(&priv->post_associate);
5445         cancel_work_sync(&priv->beacon_update);
5446 }
5447
5448 static struct attribute *iwl4965_sysfs_entries[] = {
5449         &dev_attr_channels.attr,
5450         &dev_attr_flags.attr,
5451         &dev_attr_filter_flags.attr,
5452 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5453         &dev_attr_measurement.attr,
5454 #endif
5455         &dev_attr_power_level.attr,
5456         &dev_attr_retry_rate.attr,
5457         &dev_attr_rs_window.attr,
5458         &dev_attr_statistics.attr,
5459         &dev_attr_status.attr,
5460         &dev_attr_temperature.attr,
5461         &dev_attr_tx_power.attr,
5462 #ifdef CONFIG_IWLWIFI_DEBUG
5463         &dev_attr_debug_level.attr,
5464 #endif
5465         &dev_attr_version.attr,
5466
5467         NULL
5468 };
5469
5470 static struct attribute_group iwl4965_attribute_group = {
5471         .name = NULL,           /* put in device directory */
5472         .attrs = iwl4965_sysfs_entries,
5473 };
5474
5475 static struct ieee80211_ops iwl4965_hw_ops = {
5476         .tx = iwl4965_mac_tx,
5477         .start = iwl4965_mac_start,
5478         .stop = iwl4965_mac_stop,
5479         .add_interface = iwl4965_mac_add_interface,
5480         .remove_interface = iwl4965_mac_remove_interface,
5481         .config = iwl4965_mac_config,
5482         .config_interface = iwl4965_mac_config_interface,
5483         .configure_filter = iwl4965_configure_filter,
5484         .set_key = iwl4965_mac_set_key,
5485         .update_tkip_key = iwl4965_mac_update_tkip_key,
5486         .get_stats = iwl4965_mac_get_stats,
5487         .get_tx_stats = iwl4965_mac_get_tx_stats,
5488         .conf_tx = iwl4965_mac_conf_tx,
5489         .get_tsf = iwl4965_mac_get_tsf,
5490         .reset_tsf = iwl4965_mac_reset_tsf,
5491         .beacon_update = iwl4965_mac_beacon_update,
5492         .bss_info_changed = iwl4965_bss_info_changed,
5493 #ifdef CONFIG_IWL4965_HT
5494         .ampdu_action = iwl4965_mac_ampdu_action,
5495 #endif  /* CONFIG_IWL4965_HT */
5496         .hw_scan = iwl4965_mac_hw_scan
5497 };
5498
5499 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5500 {
5501         int err = 0;
5502         struct iwl_priv *priv;
5503         struct ieee80211_hw *hw;
5504         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5505         unsigned long flags;
5506         DECLARE_MAC_BUF(mac);
5507
5508         /************************
5509          * 1. Allocating HW data
5510          ************************/
5511
5512         /* Disabling hardware scan means that mac80211 will perform scans
5513          * "the hard way", rather than using device's scan. */
5514         if (cfg->mod_params->disable_hw_scan) {
5515                 if (cfg->mod_params->debug & IWL_DL_INFO)
5516                         dev_printk(KERN_DEBUG, &(pdev->dev),
5517                                    "Disabling hw_scan\n");
5518                 iwl4965_hw_ops.hw_scan = NULL;
5519         }
5520
5521         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5522         if (!hw) {
5523                 err = -ENOMEM;
5524                 goto out;
5525         }
5526         priv = hw->priv;
5527         /* At this point both hw and priv are allocated. */
5528
5529         SET_IEEE80211_DEV(hw, &pdev->dev);
5530
5531         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5532         priv->cfg = cfg;
5533         priv->pci_dev = pdev;
5534
5535 #ifdef CONFIG_IWLWIFI_DEBUG
5536         priv->debug_level = priv->cfg->mod_params->debug;
5537         atomic_set(&priv->restrict_refcnt, 0);
5538 #endif
5539
5540         /**************************
5541          * 2. Initializing PCI bus
5542          **************************/
5543         if (pci_enable_device(pdev)) {
5544                 err = -ENODEV;
5545                 goto out_ieee80211_free_hw;
5546         }
5547
5548         pci_set_master(pdev);
5549
5550         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5551         if (!err)
5552                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5553         if (err) {
5554                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5555                 if (!err)
5556                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5557                 /* both attempts failed: */
5558                 if (err) {
5559                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5560                                 DRV_NAME);
5561                         goto out_pci_disable_device;
5562                 }
5563         }
5564
5565         err = pci_request_regions(pdev, DRV_NAME);
5566         if (err)
5567                 goto out_pci_disable_device;
5568
5569         pci_set_drvdata(pdev, priv);
5570
5571         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5572          * PCI Tx retries from interfering with C3 CPU state */
5573         pci_write_config_byte(pdev, 0x41, 0x00);
5574
5575         /***********************
5576          * 3. Read REV register
5577          ***********************/
5578         priv->hw_base = pci_iomap(pdev, 0, 0);
5579         if (!priv->hw_base) {
5580                 err = -ENODEV;
5581                 goto out_pci_release_regions;
5582         }
5583
5584         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5585                 (unsigned long long) pci_resource_len(pdev, 0));
5586         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5587
5588         iwl_hw_detect(priv);
5589         printk(KERN_INFO DRV_NAME
5590                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5591                 priv->cfg->name, priv->hw_rev);
5592
5593         /* amp init */
5594         err = priv->cfg->ops->lib->apm_ops.init(priv);
5595         if (err < 0) {
5596                 IWL_DEBUG_INFO("Failed to init APMG\n");
5597                 goto out_iounmap;
5598         }
5599         /*****************
5600          * 4. Read EEPROM
5601          *****************/
5602         /* Read the EEPROM */
5603         err = iwl_eeprom_init(priv);
5604         if (err) {
5605                 IWL_ERROR("Unable to init EEPROM\n");
5606                 goto out_iounmap;
5607         }
5608         err = iwl_eeprom_check_version(priv);
5609         if (err)
5610                 goto out_iounmap;
5611
5612         /* extract MAC Address */
5613         iwl_eeprom_get_mac(priv, priv->mac_addr);
5614         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5615         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5616
5617         /************************
5618          * 5. Setup HW constants
5619          ************************/
5620         /* Device-specific setup */
5621         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5622                 IWL_ERROR("failed to set hw parameters\n");
5623                 goto out_free_eeprom;
5624         }
5625
5626         /*******************
5627          * 6. Setup priv
5628          *******************/
5629
5630         err = iwl_init_drv(priv);
5631         if (err)
5632                 goto out_free_eeprom;
5633         /* At this point both hw and priv are initialized. */
5634
5635         /**********************************
5636          * 7. Initialize module parameters
5637          **********************************/
5638
5639         /* Disable radio (SW RF KILL) via parameter when loading driver */
5640         if (priv->cfg->mod_params->disable) {
5641                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5642                 IWL_DEBUG_INFO("Radio disabled.\n");
5643         }
5644
5645         /********************
5646          * 8. Setup services
5647          ********************/
5648         spin_lock_irqsave(&priv->lock, flags);
5649         iwl4965_disable_interrupts(priv);
5650         spin_unlock_irqrestore(&priv->lock, flags);
5651
5652         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5653         if (err) {
5654                 IWL_ERROR("failed to create sysfs device attributes\n");
5655                 goto out_uninit_drv;
5656         }
5657
5658
5659         iwl4965_setup_deferred_work(priv);
5660         iwl4965_setup_rx_handlers(priv);
5661
5662         /********************
5663          * 9. Conclude
5664          ********************/
5665         pci_save_state(pdev);
5666         pci_disable_device(pdev);
5667
5668         /**********************************
5669          * 10. Setup and register mac80211
5670          **********************************/
5671
5672         err = iwl_setup_mac(priv);
5673         if (err)
5674                 goto out_remove_sysfs;
5675
5676         err = iwl_dbgfs_register(priv, DRV_NAME);
5677         if (err)
5678                 IWL_ERROR("failed to create debugfs files\n");
5679
5680         /* notify iwlcore to init */
5681         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5682         return 0;
5683
5684  out_remove_sysfs:
5685         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5686  out_uninit_drv:
5687         iwl_uninit_drv(priv);
5688  out_free_eeprom:
5689         iwl_eeprom_free(priv);
5690  out_iounmap:
5691         pci_iounmap(pdev, priv->hw_base);
5692  out_pci_release_regions:
5693         pci_release_regions(pdev);
5694         pci_set_drvdata(pdev, NULL);
5695  out_pci_disable_device:
5696         pci_disable_device(pdev);
5697  out_ieee80211_free_hw:
5698         ieee80211_free_hw(priv->hw);
5699  out:
5700         return err;
5701 }
5702
5703 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5704 {
5705         struct iwl_priv *priv = pci_get_drvdata(pdev);
5706         struct list_head *p, *q;
5707         int i;
5708         unsigned long flags;
5709
5710         if (!priv)
5711                 return;
5712
5713         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5714
5715         if (priv->mac80211_registered) {
5716                 ieee80211_unregister_hw(priv->hw);
5717                 priv->mac80211_registered = 0;
5718         }
5719
5720         set_bit(STATUS_EXIT_PENDING, &priv->status);
5721
5722         iwl4965_down(priv);
5723
5724         /* make sure we flush any pending irq or
5725          * tasklet for the driver
5726          */
5727         spin_lock_irqsave(&priv->lock, flags);
5728         iwl4965_disable_interrupts(priv);
5729         spin_unlock_irqrestore(&priv->lock, flags);
5730
5731         iwl_synchronize_irq(priv);
5732
5733         /* Free MAC hash list for ADHOC */
5734         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5735                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5736                         list_del(p);
5737                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5738                 }
5739         }
5740
5741         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5742         iwl_dbgfs_unregister(priv);
5743         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5744
5745         iwl4965_dealloc_ucode_pci(priv);
5746
5747         if (priv->rxq.bd)
5748                 iwl_rx_queue_free(priv, &priv->rxq);
5749         iwl_hw_txq_ctx_free(priv);
5750
5751         iwlcore_clear_stations_table(priv);
5752         iwl_eeprom_free(priv);
5753
5754
5755         /*netif_stop_queue(dev); */
5756         flush_workqueue(priv->workqueue);
5757
5758         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5759          * priv->workqueue... so we can't take down the workqueue
5760          * until now... */
5761         destroy_workqueue(priv->workqueue);
5762         priv->workqueue = NULL;
5763
5764         pci_iounmap(pdev, priv->hw_base);
5765         pci_release_regions(pdev);
5766         pci_disable_device(pdev);
5767         pci_set_drvdata(pdev, NULL);
5768
5769         iwl_uninit_drv(priv);
5770
5771         if (priv->ibss_beacon)
5772                 dev_kfree_skb(priv->ibss_beacon);
5773
5774         ieee80211_free_hw(priv->hw);
5775 }
5776
5777 #ifdef CONFIG_PM
5778
5779 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5780 {
5781         struct iwl_priv *priv = pci_get_drvdata(pdev);
5782
5783         if (priv->is_open) {
5784                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5785                 iwl4965_mac_stop(priv->hw);
5786                 priv->is_open = 1;
5787         }
5788
5789         pci_set_power_state(pdev, PCI_D3hot);
5790
5791         return 0;
5792 }
5793
5794 static int iwl4965_pci_resume(struct pci_dev *pdev)
5795 {
5796         struct iwl_priv *priv = pci_get_drvdata(pdev);
5797
5798         pci_set_power_state(pdev, PCI_D0);
5799
5800         if (priv->is_open)
5801                 iwl4965_mac_start(priv->hw);
5802
5803         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5804         return 0;
5805 }
5806
5807 #endif /* CONFIG_PM */
5808
5809 /*****************************************************************************
5810  *
5811  * driver and module entry point
5812  *
5813  *****************************************************************************/
5814
5815 /* Hardware specific file defines the PCI IDs table for that hardware module */
5816 static struct pci_device_id iwl_hw_card_ids[] = {
5817         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5818         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5819 #ifdef CONFIG_IWL5000
5820         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5821         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5822         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5823 #endif /* CONFIG_IWL5000 */
5824         {0}
5825 };
5826 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5827
5828 static struct pci_driver iwl_driver = {
5829         .name = DRV_NAME,
5830         .id_table = iwl_hw_card_ids,
5831         .probe = iwl4965_pci_probe,
5832         .remove = __devexit_p(iwl4965_pci_remove),
5833 #ifdef CONFIG_PM
5834         .suspend = iwl4965_pci_suspend,
5835         .resume = iwl4965_pci_resume,
5836 #endif
5837 };
5838
5839 static int __init iwl4965_init(void)
5840 {
5841
5842         int ret;
5843         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5844         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5845
5846         ret = iwl4965_rate_control_register();
5847         if (ret) {
5848                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5849                 return ret;
5850         }
5851
5852         ret = pci_register_driver(&iwl_driver);
5853         if (ret) {
5854                 IWL_ERROR("Unable to initialize PCI module\n");
5855                 goto error_register;
5856         }
5857
5858         return ret;
5859
5860 error_register:
5861         iwl4965_rate_control_unregister();
5862         return ret;
5863 }
5864
5865 static void __exit iwl4965_exit(void)
5866 {
5867         pci_unregister_driver(&iwl_driver);
5868         iwl4965_rate_control_unregister();
5869 }
5870
5871 module_exit(iwl4965_exit);
5872 module_init(iwl4965_init);