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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  90 static const struct ieee80211_supported_band *iwl_get_hw_mode(
  91                 struct iwl_priv *priv, enum ieee80211_band band)
  92 {
  93         return priv->hw->wiphy->bands[band];
  94 }
  95
  96 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
  97 {
  98         /* Single white space is for Linksys APs */
  99         if (essid_len == 1 && essid[0] == ' ')
 100                 return 1;
 101
 102         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 103         while (essid_len) {
 104                 essid_len--;
 105                 if (essid[essid_len] != '\0')
 106                         return 0;
 107         }
 108
 109         return 1;
 110 }
 111
 112 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 113 {
 114         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 115         const char *s = essid;
 116         char *d = escaped;
 117
 118         if (iwl4965_is_empty_essid(essid, essid_len)) {
 119                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 120                 return escaped;
 121         }
 122
 123         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 124         while (essid_len--) {
 125                 if (*s == '\0') {
 126                         *d++ = '\\';
 127                         *d++ = '0';
 128                         s++;
 129                 } else
 130                         *d++ = *s++;
 131         }
 132         *d = '\0';
 133         return escaped;
 134 }
 135
 136 /*************** STATION TABLE MANAGEMENT ****
 137  * mac80211 should be examined to determine if sta_info is duplicating
 138  * the functionality provided here
 139  */
 140
 141 /**************************************************************/
 142
 143
 144
 145 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 146 {
 147         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 148
 149         if (hw_decrypt)
 150                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 151         else
 152                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 153
 154 }
 155
 156 /**
 157  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 158  *
 159  * NOTE:  This is really only useful during development and can eventually
 160  * be #ifdef'd out once the driver is stable and folks aren't actively
 161  * making changes
 162  */
 163 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 164 {
 165         int error = 0;
 166         int counter = 1;
 167
 168         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 169                 error |= le32_to_cpu(rxon->flags &
 170                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 171                                  RXON_FLG_RADAR_DETECT_MSK));
 172                 if (error)
 173                         IWL_WARNING("check 24G fields %d | %d\n",
 174                                     counter++, error);
 175         } else {
 176                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 177                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 178                 if (error)
 179                         IWL_WARNING("check 52 fields %d | %d\n",
 180                                     counter++, error);
 181                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 182                 if (error)
 183                         IWL_WARNING("check 52 CCK %d | %d\n",
 184                                     counter++, error);
 185         }
 186         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 187         if (error)
 188                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 189
 190         /* make sure basic rates 6Mbps and 1Mbps are supported */
 191         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 192                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 193         if (error)
 194                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 195
 196         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 197         if (error)
 198                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 199
 200         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 201                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 202         if (error)
 203                 IWL_WARNING("check CCK and short slot %d | %d\n",
 204                             counter++, error);
 205
 206         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 207                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 208         if (error)
 209                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 210                             counter++, error);
 211
 212         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 213                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 214         if (error)
 215                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 216                             counter++, error);
 217
 218         if (error)
 219                 IWL_WARNING("Tuning to channel %d\n",
 220                             le16_to_cpu(rxon->channel));
 221
 222         if (error) {
 223                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 224                 return -1;
 225         }
 226         return 0;
 227 }
 228
 229 /**
 230  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 231  * @priv: staging_rxon is compared to active_rxon
 232  *
 233  * If the RXON structure is changing enough to require a new tune,
 234  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 235  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 236  */
 237 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 238 {
 239
 240         /* These items are only settable from the full RXON command */
 241         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 242             compare_ether_addr(priv->staging_rxon.bssid_addr,
 243                                priv->active_rxon.bssid_addr) ||
 244             compare_ether_addr(priv->staging_rxon.node_addr,
 245                                priv->active_rxon.node_addr) ||
 246             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 247                                priv->active_rxon.wlap_bssid_addr) ||
 248             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 249             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 250             (priv->staging_rxon.air_propagation !=
 251              priv->active_rxon.air_propagation) ||
 252             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 253              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 254             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 255              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 256             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 257             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 258                 return 1;
 259
 260         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 261          * be updated with the RXON_ASSOC command -- however only some
 262          * flag transitions are allowed using RXON_ASSOC */
 263
 264         /* Check if we are not switching bands */
 265         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 266             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 267                 return 1;
 268
 269         /* Check if we are switching association toggle */
 270         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 271                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 272                 return 1;
 273
 274         return 0;
 275 }
 276
 277 /**
 278  * iwl4965_commit_rxon - commit staging_rxon to hardware
 279  *
 280  * The RXON command in staging_rxon is committed to the hardware and
 281  * the active_rxon structure is updated with the new data.  This
 282  * function correctly transitions out of the RXON_ASSOC_MSK state if
 283  * a HW tune is required based on the RXON structure changes.
 284  */
 285 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 286 {
 287         /* cast away the const for active_rxon in this function */
 288         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 289         DECLARE_MAC_BUF(mac);
 290         int rc = 0;
 291
 292         if (!iwl_is_alive(priv))
 293                 return -1;
 294
 295         /* always get timestamp with Rx frame */
 296         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 297
 298         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 299         if (rc) {
 300                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 301                 return -EINVAL;
 302         }
 303
 304         /* If we don't need to send a full RXON, we can use
 305          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 306          * and other flags for the current radio configuration. */
 307         if (!iwl4965_full_rxon_required(priv)) {
 308                 rc = iwl_send_rxon_assoc(priv);
 309                 if (rc) {
 310                         IWL_ERROR("Error setting RXON_ASSOC "
 311                                   "configuration (%d).\n", rc);
 312                         return rc;
 313                 }
 314
 315                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 316
 317                 return 0;
 318         }
 319
 320         /* station table will be cleared */
 321         priv->assoc_station_added = 0;
 322
 323         /* If we are currently associated and the new config requires
 324          * an RXON_ASSOC and the new config wants the associated mask enabled,
 325          * we must clear the associated from the active configuration
 326          * before we apply the new config */
 327         if (iwl_is_associated(priv) &&
 328             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 329                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 330                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 331
 332                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 333                                       sizeof(struct iwl_rxon_cmd),
 334                                       &priv->active_rxon);
 335
 336                 /* If the mask clearing failed then we set
 337                  * active_rxon back to what it was previously */
 338                 if (rc) {
 339                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 340                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 341                                   "configuration (%d).\n", rc);
 342                         return rc;
 343                 }
 344         }
 345
 346         IWL_DEBUG_INFO("Sending RXON\n"
 347                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 348                        "* channel = %d\n"
 349                        "* bssid = %s\n",
 350                        ((priv->staging_rxon.filter_flags &
 351                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 352                        le16_to_cpu(priv->staging_rxon.channel),
 353                        print_mac(mac, priv->staging_rxon.bssid_addr));
 354
 355         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 356         /* Apply the new configuration */
 357         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 358                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 359         if (rc) {
 360                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 361                 return rc;
 362         }
 363
 364         iwl_remove_station(priv, iwl_bcast_addr, 0);
 365         iwlcore_clear_stations_table(priv);
 366
 367         if (!priv->error_recovering)
 368                 priv->start_calib = 0;
 369
 370         iwl_init_sensitivity(priv);
 371
 372         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 373
 374         /* If we issue a new RXON command which required a tune then we must
 375          * send a new TXPOWER command or we won't be able to Tx any frames */
 376         rc = iwl4965_hw_reg_send_txpower(priv);
 377         if (rc) {
 378                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 379                 return rc;
 380         }
 381
 382         /* Add the broadcast address so we can send broadcast frames */
 383         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 384             IWL_INVALID_STATION) {
 385                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 386                 return -EIO;
 387         }
 388
 389         /* If we have set the ASSOC_MSK and we are in BSS mode then
 390          * add the IWL_AP_ID to the station rate table */
 391         if (iwl_is_associated(priv) &&
 392             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 393                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 394                     == IWL_INVALID_STATION) {
 395                         IWL_ERROR("Error adding AP address for transmit.\n");
 396                         return -EIO;
 397                 }
 398                 priv->assoc_station_added = 1;
 399                 if (priv->default_wep_key &&
 400                     iwl_send_static_wepkey_cmd(priv, 0))
 401                         IWL_ERROR("Could not send WEP static key.\n");
 402         }
 403
 404         return 0;
 405 }
 406
 407 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 408 {
 409
 410         iwl_set_rxon_chain(priv);
 411         iwl4965_commit_rxon(priv);
 412 }
 413
 414 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 415 {
 416         struct iwl4965_bt_cmd bt_cmd = {
 417                 .flags = 3,
 418                 .lead_time = 0xAA,
 419                 .max_kill = 1,
 420                 .kill_ack_mask = 0,
 421                 .kill_cts_mask = 0,
 422         };
 423
 424         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 425                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 426 }
 427
 428 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 429 {
 430         int ret = 0;
 431         struct iwl_rx_packet *res;
 432         struct iwl_host_cmd cmd = {
 433                 .id = REPLY_SCAN_ABORT_CMD,
 434                 .meta.flags = CMD_WANT_SKB,
 435         };
 436
 437         /* If there isn't a scan actively going on in the hardware
 438          * then we are in between scan bands and not actually
 439          * actively scanning, so don't send the abort command */
 440         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 441                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 442                 return 0;
 443         }
 444
 445         ret = iwl_send_cmd_sync(priv, &cmd);
 446         if (ret) {
 447                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 448                 return ret;
 449         }
 450
 451         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 452         if (res->u.status != CAN_ABORT_STATUS) {
 453                 /* The scan abort will return 1 for success or
 454                  * 2 for "failure".  A failure condition can be
 455                  * due to simply not being in an active scan which
 456                  * can occur if we send the scan abort before we
 457                  * the microcode has notified us that a scan is
 458                  * completed. */
 459                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 460                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 461                 clear_bit(STATUS_SCAN_HW, &priv->status);
 462         }
 463
 464         dev_kfree_skb_any(cmd.meta.u.skb);
 465
 466         return ret;
 467 }
 468
 469 /*
 470  * CARD_STATE_CMD
 471  *
 472  * Use: Sets the device's internal card state to enable, disable, or halt
 473  *
 474  * When in the 'enable' state the card operates as normal.
 475  * When in the 'disable' state, the card enters into a low power mode.
 476  * When in the 'halt' state, the card is shut down and must be fully
 477  * restarted to come back on.
 478  */
 479 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
 480 {
 481         struct iwl_host_cmd cmd = {
 482                 .id = REPLY_CARD_STATE_CMD,
 483                 .len = sizeof(u32),
 484                 .data = &flags,
 485                 .meta.flags = meta_flag,
 486         };
 487
 488         return iwl_send_cmd(priv, &cmd);
 489 }
 490
 491 static void iwl_clear_free_frames(struct iwl_priv *priv)
 492 {
 493         struct list_head *element;
 494
 495         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 496                        priv->frames_count);
 497
 498         while (!list_empty(&priv->free_frames)) {
 499                 element = priv->free_frames.next;
 500                 list_del(element);
 501                 kfree(list_entry(element, struct iwl_frame, list));
 502                 priv->frames_count--;
 503         }
 504
 505         if (priv->frames_count) {
 506                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 507                             priv->frames_count);
 508                 priv->frames_count = 0;
 509         }
 510 }
 511
 512 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 513 {
 514         struct iwl_frame *frame;
 515         struct list_head *element;
 516         if (list_empty(&priv->free_frames)) {
 517                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 518                 if (!frame) {
 519                         IWL_ERROR("Could not allocate frame!\n");
 520                         return NULL;
 521                 }
 522
 523                 priv->frames_count++;
 524                 return frame;
 525         }
 526
 527         element = priv->free_frames.next;
 528         list_del(element);
 529         return list_entry(element, struct iwl_frame, list);
 530 }
 531
 532 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 533 {
 534         memset(frame, 0, sizeof(*frame));
 535         list_add(&frame->list, &priv->free_frames);
 536 }
 537
 538 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 539                                 struct ieee80211_hdr *hdr,
 540                                 const u8 *dest, int left)
 541 {
 542
 543         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 544             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 545              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 546                 return 0;
 547
 548         if (priv->ibss_beacon->len > left)
 549                 return 0;
 550
 551         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 552
 553         return priv->ibss_beacon->len;
 554 }
 555
 556 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 557 {
 558         int i;
 559         int rate_mask;
 560
 561         /* Set rate mask*/
 562         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 563                 rate_mask = priv->active_rate_basic & 0xF;
 564         else
 565                 rate_mask = priv->active_rate_basic & 0xFF0;
 566
 567         /* Find lowest valid rate */
 568         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 569                                         i = iwl_rates[i].next_ieee) {
 570                 if (rate_mask & (1 << i))
 571                         return iwl_rates[i].plcp;
 572         }
 573
 574         /* No valid rate was found. Assign the lowest one */
 575         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 576                 return IWL_RATE_1M_PLCP;
 577         else
 578                 return IWL_RATE_6M_PLCP;
 579 }
 580
 581 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 582 {
 583         struct iwl_frame *frame;
 584         unsigned int frame_size;
 585         int rc;
 586         u8 rate;
 587
 588         frame = iwl_get_free_frame(priv);
 589
 590         if (!frame) {
 591                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 592                           "command.\n");
 593                 return -ENOMEM;
 594         }
 595
 596         rate = iwl4965_rate_get_lowest_plcp(priv);
 597
 598         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 599
 600         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 601                               &frame->u.cmd[0]);
 602
 603         iwl_free_frame(priv, frame);
 604
 605         return rc;
 606 }
 607
 608 /******************************************************************************
 609  *
 610  * Misc. internal state and helper functions
 611  *
 612  ******************************************************************************/
 613
 614 /**
 615  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
 616  *
 617  * return : set the bit for each supported rate insert in ie
 618  */
 619 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
 620                                     u16 basic_rate, int *left)
 621 {
 622         u16 ret_rates = 0, bit;
 623         int i;
 624         u8 *cnt = ie;
 625         u8 *rates = ie + 1;
 626
 627         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
 628                 if (bit & supported_rate) {
 629                         ret_rates |= bit;
 630                         rates[*cnt] = iwl_rates[i].ieee |
 631                                 ((bit & basic_rate) ? 0x80 : 0x00);
 632                         (*cnt)++;
 633                         (*left)--;
 634                         if ((*left <= 0) ||
 635                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
 636                                 break;
 637                 }
 638         }
 639
 640         return ret_rates;
 641 }
 642
 643 #ifdef CONFIG_IWL4965_HT
 644 static void iwl4965_ht_conf(struct iwl_priv *priv,
 645                             struct ieee80211_bss_conf *bss_conf)
 646 {
 647         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 648         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 649         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 650
 651         IWL_DEBUG_MAC80211("enter: \n");
 652
 653         iwl_conf->is_ht = bss_conf->assoc_ht;
 654
 655         if (!iwl_conf->is_ht)
 656                 return;
 657
 658         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 659
 660         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 661                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 662         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 663                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 664
 665         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 666         iwl_conf->max_amsdu_size =
 667                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 668
 669         iwl_conf->supported_chan_width =
 670                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 671         iwl_conf->extension_chan_offset =
 672                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 673         /* If no above or below channel supplied disable FAT channel */
 674         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
 675             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
 676                 iwl_conf->supported_chan_width = 0;
 677
 678         iwl_conf->tx_mimo_ps_mode =
 679                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 680         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 681
 682         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 683         iwl_conf->tx_chan_width =
 684                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 685         iwl_conf->ht_protection =
 686                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 687         iwl_conf->non_GF_STA_present =
 688                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 689
 690         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 691         IWL_DEBUG_MAC80211("leave\n");
 692 }
 693
 694 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 695                         u8 *pos, int *left)
 696 {
 697         struct ieee80211_ht_cap *ht_cap;
 698
 699         if (!sband || !sband->ht_info.ht_supported)
 700                 return;
 701
 702         if (*left < sizeof(struct ieee80211_ht_cap))
 703                 return;
 704
 705         *pos++ = sizeof(struct ieee80211_ht_cap);
 706         ht_cap = (struct ieee80211_ht_cap *) pos;
 707
 708         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
 709         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
 710         ht_cap->ampdu_params_info =
 711                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
 712                 ((sband->ht_info.ampdu_density << 2) &
 713                         IEEE80211_HT_CAP_AMPDU_DENSITY);
 714         *left -= sizeof(struct ieee80211_ht_cap);
 715 }
 716 #else
 717 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
 718                                    struct ieee80211_bss_conf *bss_conf)
 719 {
 720 }
 721 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 722                         u8 *pos, int *left)
 723 {
 724 }
 725 #endif
 726
 727
 728 /**
 729  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
 730  */
 731 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
 732                                   enum ieee80211_band band,
 733                                   struct ieee80211_mgmt *frame,
 734                                   int left, int is_direct)
 735 {
 736         int len = 0;
 737         u8 *pos = NULL;
 738         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
 739         const struct ieee80211_supported_band *sband =
 740                                                 iwl_get_hw_mode(priv, band);
 741
 742         /* Make sure there is enough space for the probe request,
 743          * two mandatory IEs and the data */
 744         left -= 24;
 745         if (left < 0)
 746                 return 0;
 747         len += 24;
 748
 749         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 750         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
 751         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
 752         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
 753         frame->seq_ctrl = 0;
 754
 755         /* fill in our indirect SSID IE */
 756         /* ...next IE... */
 757
 758         left -= 2;
 759         if (left < 0)
 760                 return 0;
 761         len += 2;
 762         pos = &(frame->u.probe_req.variable[0]);
 763         *pos++ = WLAN_EID_SSID;
 764         *pos++ = 0;
 765
 766         /* fill in our direct SSID IE... */
 767         if (is_direct) {
 768                 /* ...next IE... */
 769                 left -= 2 + priv->essid_len;
 770                 if (left < 0)
 771                         return 0;
 772                 /* ... fill it in... */
 773                 *pos++ = WLAN_EID_SSID;
 774                 *pos++ = priv->essid_len;
 775                 memcpy(pos, priv->essid, priv->essid_len);
 776                 pos += priv->essid_len;
 777                 len += 2 + priv->essid_len;
 778         }
 779
 780         /* fill in supported rate */
 781         /* ...next IE... */
 782         left -= 2;
 783         if (left < 0)
 784                 return 0;
 785
 786         /* ... fill it in... */
 787         *pos++ = WLAN_EID_SUPP_RATES;
 788         *pos = 0;
 789
 790         /* exclude 60M rate */
 791         active_rates = priv->rates_mask;
 792         active_rates &= ~IWL_RATE_60M_MASK;
 793
 794         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
 795
 796         cck_rates = IWL_CCK_RATES_MASK & active_rates;
 797         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
 798                         active_rate_basic, &left);
 799         active_rates &= ~ret_rates;
 800
 801         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
 802                                  active_rate_basic, &left);
 803         active_rates &= ~ret_rates;
 804
 805         len += 2 + *pos;
 806         pos += (*pos) + 1;
 807         if (active_rates == 0)
 808                 goto fill_end;
 809
 810         /* fill in supported extended rate */
 811         /* ...next IE... */
 812         left -= 2;
 813         if (left < 0)
 814                 return 0;
 815         /* ... fill it in... */
 816         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 817         *pos = 0;
 818         iwl4965_supported_rate_to_ie(pos, active_rates,
 819                                  active_rate_basic, &left);
 820         if (*pos > 0)
 821                 len += 2 + *pos;
 822
 823  fill_end:
 824         /* fill in HT IE */
 825         left -= 2;
 826         if (left < 0)
 827                 return 0;
 828
 829         *pos++ = WLAN_EID_HT_CAPABILITY;
 830         *pos = 0;
 831
 832         iwl_ht_cap_to_ie(sband, pos, &left);
 833
 834         if (*pos > 0)
 835                 len += 2 + *pos;
 836         return (u16)len;
 837 }
 838
 839 /*
 840  * QoS  support
 841 */
 842 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 843                                        struct iwl4965_qosparam_cmd *qos)
 844 {
 845
 846         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 847                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 848 }
 849
 850 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 851 {
 852         unsigned long flags;
 853
 854         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 855                 return;
 856
 857         if (!priv->qos_data.qos_enable)
 858                 return;
 859
 860         spin_lock_irqsave(&priv->lock, flags);
 861         priv->qos_data.def_qos_parm.qos_flags = 0;
 862
 863         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 864             !priv->qos_data.qos_cap.q_AP.txop_request)
 865                 priv->qos_data.def_qos_parm.qos_flags |=
 866                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 867         if (priv->qos_data.qos_active)
 868                 priv->qos_data.def_qos_parm.qos_flags |=
 869                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 870
 871 #ifdef CONFIG_IWL4965_HT
 872         if (priv->current_ht_config.is_ht)
 873                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 874 #endif /* CONFIG_IWL4965_HT */
 875
 876         spin_unlock_irqrestore(&priv->lock, flags);
 877
 878         if (force || iwl_is_associated(priv)) {
 879                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 880                                 priv->qos_data.qos_active,
 881                                 priv->qos_data.def_qos_parm.qos_flags);
 882
 883                 iwl4965_send_qos_params_command(priv,
 884                                 &(priv->qos_data.def_qos_parm));
 885         }
 886 }
 887
 888 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 889 {
 890         /* Filter incoming packets to determine if they are targeted toward
 891          * this network, discarding packets coming from ourselves */
 892         switch (priv->iw_mode) {
 893         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 894                 /* packets from our adapter are dropped (echo) */
 895                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 896                         return 0;
 897                 /* {broad,multi}cast packets to our IBSS go through */
 898                 if (is_multicast_ether_addr(header->addr1))
 899                         return !compare_ether_addr(header->addr3, priv->bssid);
 900                 /* packets to our adapter go through */
 901                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 902         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 903                 /* packets from our adapter are dropped (echo) */
 904                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 905                         return 0;
 906                 /* {broad,multi}cast packets to our BSS go through */
 907                 if (is_multicast_ether_addr(header->addr1))
 908                         return !compare_ether_addr(header->addr2, priv->bssid);
 909                 /* packets to our adapter go through */
 910                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 911         default:
 912                 break;
 913         }
 914
 915         return 1;
 916 }
 917
 918
 919
 920 /**
 921  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 922  *
 923  * NOTE: priv->mutex is not required before calling this function
 924  */
 925 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 926 {
 927         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 928                 clear_bit(STATUS_SCANNING, &priv->status);
 929                 return 0;
 930         }
 931
 932         if (test_bit(STATUS_SCANNING, &priv->status)) {
 933                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 934                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
 935                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
 936                         queue_work(priv->workqueue, &priv->abort_scan);
 937
 938                 } else
 939                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
 940
 941                 return test_bit(STATUS_SCANNING, &priv->status);
 942         }
 943
 944         return 0;
 945 }
 946
 947 /**
 948  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
 949  * @ms: amount of time to wait (in milliseconds) for scan to abort
 950  *
 951  * NOTE: priv->mutex must be held before calling this function
 952  */
 953 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
 954 {
 955         unsigned long now = jiffies;
 956         int ret;
 957
 958         ret = iwl4965_scan_cancel(priv);
 959         if (ret && ms) {
 960                 mutex_unlock(&priv->mutex);
 961                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
 962                                 test_bit(STATUS_SCANNING, &priv->status))
 963                         msleep(1);
 964                 mutex_lock(&priv->mutex);
 965
 966                 return test_bit(STATUS_SCANNING, &priv->status);
 967         }
 968
 969         return ret;
 970 }
 971
 972 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 973 {
 974         /* Reset ieee stats */
 975
 976         /* We don't reset the net_device_stats (ieee->stats) on
 977          * re-association */
 978
 979         priv->last_seq_num = -1;
 980         priv->last_frag_num = -1;
 981         priv->last_packet_time = 0;
 982
 983         iwl4965_scan_cancel(priv);
 984 }
 985
 986 #define MAX_UCODE_BEACON_INTERVAL       4096
 987 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 988
 989 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 990 {
 991         u16 new_val = 0;
 992         u16 beacon_factor = 0;
 993
 994         beacon_factor =
 995             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 996                 / MAX_UCODE_BEACON_INTERVAL;
 997         new_val = beacon_val / beacon_factor;
 998
 999         return cpu_to_le16(new_val);
1000 }
1001
1002 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1003 {
1004         u64 interval_tm_unit;
1005         u64 tsf, result;
1006         unsigned long flags;
1007         struct ieee80211_conf *conf = NULL;
1008         u16 beacon_int = 0;
1009
1010         conf = ieee80211_get_hw_conf(priv->hw);
1011
1012         spin_lock_irqsave(&priv->lock, flags);
1013         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1014         priv->rxon_timing.timestamp.dw[0] =
1015                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1016
1017         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1018
1019         tsf = priv->timestamp;
1020
1021         beacon_int = priv->beacon_int;
1022         spin_unlock_irqrestore(&priv->lock, flags);
1023
1024         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1025                 if (beacon_int == 0) {
1026                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1027                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1028                 } else {
1029                         priv->rxon_timing.beacon_interval =
1030                                 cpu_to_le16(beacon_int);
1031                         priv->rxon_timing.beacon_interval =
1032                             iwl4965_adjust_beacon_interval(
1033                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1034                 }
1035
1036                 priv->rxon_timing.atim_window = 0;
1037         } else {
1038                 priv->rxon_timing.beacon_interval =
1039                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1040                 /* TODO: we need to get atim_window from upper stack
1041                  * for now we set to 0 */
1042                 priv->rxon_timing.atim_window = 0;
1043         }
1044
1045         interval_tm_unit =
1046                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1047         result = do_div(tsf, interval_tm_unit);
1048         priv->rxon_timing.beacon_init_val =
1049             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1050
1051         IWL_DEBUG_ASSOC
1052             ("beacon interval %d beacon timer %d beacon tim %d\n",
1053                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1054                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1055                 le16_to_cpu(priv->rxon_timing.atim_window));
1056 }
1057
1058 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1059 {
1060         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1061                 IWL_ERROR("APs don't scan.\n");
1062                 return 0;
1063         }
1064
1065         if (!iwl_is_ready_rf(priv)) {
1066                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1067                 return -EIO;
1068         }
1069
1070         if (test_bit(STATUS_SCANNING, &priv->status)) {
1071                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1072                 return -EAGAIN;
1073         }
1074
1075         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1076                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1077                                "Queuing.\n");
1078                 return -EAGAIN;
1079         }
1080
1081         IWL_DEBUG_INFO("Starting scan...\n");
1082         priv->scan_bands = 2;
1083         set_bit(STATUS_SCANNING, &priv->status);
1084         priv->scan_start = jiffies;
1085         priv->scan_pass_start = priv->scan_start;
1086
1087         queue_work(priv->workqueue, &priv->request_scan);
1088
1089         return 0;
1090 }
1091
1092
1093 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1094                                           enum ieee80211_band band)
1095 {
1096         if (band == IEEE80211_BAND_5GHZ) {
1097                 priv->staging_rxon.flags &=
1098                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1099                       | RXON_FLG_CCK_MSK);
1100                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1101         } else {
1102                 /* Copied from iwl4965_post_associate() */
1103                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1104                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1105                 else
1106                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1107
1108                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1109                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1110
1111                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1112                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1113                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1114         }
1115 }
1116
1117 /*
1118  * initialize rxon structure with default values from eeprom
1119  */
1120 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1121 {
1122         const struct iwl_channel_info *ch_info;
1123
1124         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1125
1126         switch (priv->iw_mode) {
1127         case IEEE80211_IF_TYPE_AP:
1128                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1129                 break;
1130
1131         case IEEE80211_IF_TYPE_STA:
1132                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1133                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1134                 break;
1135
1136         case IEEE80211_IF_TYPE_IBSS:
1137                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1138                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1139                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1140                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1141                 break;
1142
1143         case IEEE80211_IF_TYPE_MNTR:
1144                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1145                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1146                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1147                 break;
1148         default:
1149                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1150                 break;
1151         }
1152
1153 #if 0
1154         /* TODO:  Figure out when short_preamble would be set and cache from
1155          * that */
1156         if (!hw_to_local(priv->hw)->short_preamble)
1157                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1158         else
1159                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1160 #endif
1161
1162         ch_info = iwl_get_channel_info(priv, priv->band,
1163                                        le16_to_cpu(priv->staging_rxon.channel));
1164
1165         if (!ch_info)
1166                 ch_info = &priv->channel_info[0];
1167
1168         /*
1169          * in some case A channels are all non IBSS
1170          * in this case force B/G channel
1171          */
1172         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1173             !(is_channel_ibss(ch_info)))
1174                 ch_info = &priv->channel_info[0];
1175
1176         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1177         priv->band = ch_info->band;
1178
1179         iwl4965_set_flags_for_phymode(priv, priv->band);
1180
1181         priv->staging_rxon.ofdm_basic_rates =
1182             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1183         priv->staging_rxon.cck_basic_rates =
1184             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1185
1186         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1187                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1188         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1189         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1190         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1191         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1192         iwl_set_rxon_chain(priv);
1193 }
1194
1195 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1196 {
1197         if (mode == IEEE80211_IF_TYPE_IBSS) {
1198                 const struct iwl_channel_info *ch_info;
1199
1200                 ch_info = iwl_get_channel_info(priv,
1201                         priv->band,
1202                         le16_to_cpu(priv->staging_rxon.channel));
1203
1204                 if (!ch_info || !is_channel_ibss(ch_info)) {
1205                         IWL_ERROR("channel %d not IBSS channel\n",
1206                                   le16_to_cpu(priv->staging_rxon.channel));
1207                         return -EINVAL;
1208                 }
1209         }
1210
1211         priv->iw_mode = mode;
1212
1213         iwl4965_connection_init_rx_config(priv);
1214         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1215
1216         iwlcore_clear_stations_table(priv);
1217
1218         /* dont commit rxon if rf-kill is on*/
1219         if (!iwl_is_ready_rf(priv))
1220                 return -EAGAIN;
1221
1222         cancel_delayed_work(&priv->scan_check);
1223         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1224                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1225                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1226                 return -EAGAIN;
1227         }
1228
1229         iwl4965_commit_rxon(priv);
1230
1231         return 0;
1232 }
1233
1234 static void iwl4965_set_rate(struct iwl_priv *priv)
1235 {
1236         const struct ieee80211_supported_band *hw = NULL;
1237         struct ieee80211_rate *rate;
1238         int i;
1239
1240         hw = iwl_get_hw_mode(priv, priv->band);
1241         if (!hw) {
1242                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1243                 return;
1244         }
1245
1246         priv->active_rate = 0;
1247         priv->active_rate_basic = 0;
1248
1249         for (i = 0; i < hw->n_bitrates; i++) {
1250                 rate = &(hw->bitrates[i]);
1251                 if (rate->hw_value < IWL_RATE_COUNT)
1252                         priv->active_rate |= (1 << rate->hw_value);
1253         }
1254
1255         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1256                        priv->active_rate, priv->active_rate_basic);
1257
1258         /*
1259          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1260          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1261          * OFDM
1262          */
1263         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1264                 priv->staging_rxon.cck_basic_rates =
1265                     ((priv->active_rate_basic &
1266                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1267         else
1268                 priv->staging_rxon.cck_basic_rates =
1269                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1270
1271         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1272                 priv->staging_rxon.ofdm_basic_rates =
1273                     ((priv->active_rate_basic &
1274                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1275                       IWL_FIRST_OFDM_RATE) & 0xFF;
1276         else
1277                 priv->staging_rxon.ofdm_basic_rates =
1278                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1279 }
1280
1281 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1282 {
1283         unsigned long flags;
1284
1285         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1286                 return;
1287
1288         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1289                           disable_radio ? "OFF" : "ON");
1290
1291         if (disable_radio) {
1292                 iwl4965_scan_cancel(priv);
1293                 /* FIXME: This is a workaround for AP */
1294                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1295                         spin_lock_irqsave(&priv->lock, flags);
1296                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1297                                     CSR_UCODE_SW_BIT_RFKILL);
1298                         spin_unlock_irqrestore(&priv->lock, flags);
1299                         /* call the host command only if no hw rf-kill set */
1300                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1301                             iwl_is_ready(priv))
1302                                 iwl4965_send_card_state(priv,
1303                                                         CARD_STATE_CMD_DISABLE,
1304                                                         0);
1305                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1306
1307                         /* make sure mac80211 stop sending Tx frame */
1308                         if (priv->mac80211_registered)
1309                                 ieee80211_stop_queues(priv->hw);
1310                 }
1311                 return;
1312         }
1313
1314         spin_lock_irqsave(&priv->lock, flags);
1315         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1316
1317         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1318         spin_unlock_irqrestore(&priv->lock, flags);
1319
1320         /* wake up ucode */
1321         msleep(10);
1322
1323         spin_lock_irqsave(&priv->lock, flags);
1324         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1325         if (!iwl_grab_nic_access(priv))
1326                 iwl_release_nic_access(priv);
1327         spin_unlock_irqrestore(&priv->lock, flags);
1328
1329         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1330                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1331                                   "disabled by HW switch\n");
1332                 return;
1333         }
1334
1335         queue_work(priv->workqueue, &priv->restart);
1336         return;
1337 }
1338
1339 #define IWL_PACKET_RETRY_TIME HZ
1340
1341 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1342 {
1343         u16 sc = le16_to_cpu(header->seq_ctrl);
1344         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1345         u16 frag = sc & IEEE80211_SCTL_FRAG;
1346         u16 *last_seq, *last_frag;
1347         unsigned long *last_time;
1348
1349         switch (priv->iw_mode) {
1350         case IEEE80211_IF_TYPE_IBSS:{
1351                 struct list_head *p;
1352                 struct iwl4965_ibss_seq *entry = NULL;
1353                 u8 *mac = header->addr2;
1354                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1355
1356                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1357                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1358                         if (!compare_ether_addr(entry->mac, mac))
1359                                 break;
1360                 }
1361                 if (p == &priv->ibss_mac_hash[index]) {
1362                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1363                         if (!entry) {
1364                                 IWL_ERROR("Cannot malloc new mac entry\n");
1365                                 return 0;
1366                         }
1367                         memcpy(entry->mac, mac, ETH_ALEN);
1368                         entry->seq_num = seq;
1369                         entry->frag_num = frag;
1370                         entry->packet_time = jiffies;
1371                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1372                         return 0;
1373                 }
1374                 last_seq = &entry->seq_num;
1375                 last_frag = &entry->frag_num;
1376                 last_time = &entry->packet_time;
1377                 break;
1378         }
1379         case IEEE80211_IF_TYPE_STA:
1380                 last_seq = &priv->last_seq_num;
1381                 last_frag = &priv->last_frag_num;
1382                 last_time = &priv->last_packet_time;
1383                 break;
1384         default:
1385                 return 0;
1386         }
1387         if ((*last_seq == seq) &&
1388             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1389                 if (*last_frag == frag)
1390                         goto drop;
1391                 if (*last_frag + 1 != frag)
1392                         /* out-of-order fragment */
1393                         goto drop;
1394         } else
1395                 *last_seq = seq;
1396
1397         *last_frag = frag;
1398         *last_time = jiffies;
1399         return 0;
1400
1401  drop:
1402         return 1;
1403 }
1404
1405 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1406
1407 #include "iwl-spectrum.h"
1408
1409 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1410 #define BEACON_TIME_MASK_HIGH   0xFF000000
1411 #define TIME_UNIT               1024
1412
1413 /*
1414  * extended beacon time format
1415  * time in usec will be changed into a 32-bit value in 8:24 format
1416  * the high 1 byte is the beacon counts
1417  * the lower 3 bytes is the time in usec within one beacon interval
1418  */
1419
1420 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1421 {
1422         u32 quot;
1423         u32 rem;
1424         u32 interval = beacon_interval * 1024;
1425
1426         if (!interval || !usec)
1427                 return 0;
1428
1429         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1430         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1431
1432         return (quot << 24) + rem;
1433 }
1434
1435 /* base is usually what we get from ucode with each received frame,
1436  * the same as HW timer counter counting down
1437  */
1438
1439 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1440 {
1441         u32 base_low = base & BEACON_TIME_MASK_LOW;
1442         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1443         u32 interval = beacon_interval * TIME_UNIT;
1444         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1445             (addon & BEACON_TIME_MASK_HIGH);
1446
1447         if (base_low > addon_low)
1448                 res += base_low - addon_low;
1449         else if (base_low < addon_low) {
1450                 res += interval + base_low - addon_low;
1451                 res += (1 << 24);
1452         } else
1453                 res += (1 << 24);
1454
1455         return cpu_to_le32(res);
1456 }
1457
1458 static int iwl4965_get_measurement(struct iwl_priv *priv,
1459                                struct ieee80211_measurement_params *params,
1460                                u8 type)
1461 {
1462         struct iwl4965_spectrum_cmd spectrum;
1463         struct iwl_rx_packet *res;
1464         struct iwl_host_cmd cmd = {
1465                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1466                 .data = (void *)&spectrum,
1467                 .meta.flags = CMD_WANT_SKB,
1468         };
1469         u32 add_time = le64_to_cpu(params->start_time);
1470         int rc;
1471         int spectrum_resp_status;
1472         int duration = le16_to_cpu(params->duration);
1473
1474         if (iwl_is_associated(priv))
1475                 add_time =
1476                     iwl4965_usecs_to_beacons(
1477                         le64_to_cpu(params->start_time) - priv->last_tsf,
1478                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1479
1480         memset(&spectrum, 0, sizeof(spectrum));
1481
1482         spectrum.channel_count = cpu_to_le16(1);
1483         spectrum.flags =
1484             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1485         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1486         cmd.len = sizeof(spectrum);
1487         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1488
1489         if (iwl_is_associated(priv))
1490                 spectrum.start_time =
1491                     iwl4965_add_beacon_time(priv->last_beacon_time,
1492                                 add_time,
1493                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1494         else
1495                 spectrum.start_time = 0;
1496
1497         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1498         spectrum.channels[0].channel = params->channel;
1499         spectrum.channels[0].type = type;
1500         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1501                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1502                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1503
1504         rc = iwl_send_cmd_sync(priv, &cmd);
1505         if (rc)
1506                 return rc;
1507
1508         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1509         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1510                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1511                 rc = -EIO;
1512         }
1513
1514         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1515         switch (spectrum_resp_status) {
1516         case 0:         /* Command will be handled */
1517                 if (res->u.spectrum.id != 0xff) {
1518                         IWL_DEBUG_INFO
1519                             ("Replaced existing measurement: %d\n",
1520                              res->u.spectrum.id);
1521                         priv->measurement_status &= ~MEASUREMENT_READY;
1522                 }
1523                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1524                 rc = 0;
1525                 break;
1526
1527         case 1:         /* Command will not be handled */
1528                 rc = -EAGAIN;
1529                 break;
1530         }
1531
1532         dev_kfree_skb_any(cmd.meta.u.skb);
1533
1534         return rc;
1535 }
1536 #endif
1537
1538 /******************************************************************************
1539  *
1540  * Generic RX handler implementations
1541  *
1542  ******************************************************************************/
1543 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1544                                 struct iwl_rx_mem_buffer *rxb)
1545 {
1546         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1547         struct iwl_alive_resp *palive;
1548         struct delayed_work *pwork;
1549
1550         palive = &pkt->u.alive_frame;
1551
1552         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1553                        "0x%01X 0x%01X\n",
1554                        palive->is_valid, palive->ver_type,
1555                        palive->ver_subtype);
1556
1557         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1558                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1559                 memcpy(&priv->card_alive_init,
1560                        &pkt->u.alive_frame,
1561                        sizeof(struct iwl_init_alive_resp));
1562                 pwork = &priv->init_alive_start;
1563         } else {
1564                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1565                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1566                        sizeof(struct iwl_alive_resp));
1567                 pwork = &priv->alive_start;
1568         }
1569
1570         /* We delay the ALIVE response by 5ms to
1571          * give the HW RF Kill time to activate... */
1572         if (palive->is_valid == UCODE_VALID_OK)
1573                 queue_delayed_work(priv->workqueue, pwork,
1574                                    msecs_to_jiffies(5));
1575         else
1576                 IWL_WARNING("uCode did not respond OK.\n");
1577 }
1578
1579 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1580                                    struct iwl_rx_mem_buffer *rxb)
1581 {
1582         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1583
1584         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1585                 "seq 0x%04X ser 0x%08X\n",
1586                 le32_to_cpu(pkt->u.err_resp.error_type),
1587                 get_cmd_string(pkt->u.err_resp.cmd_id),
1588                 pkt->u.err_resp.cmd_id,
1589                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1590                 le32_to_cpu(pkt->u.err_resp.error_info));
1591 }
1592
1593 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1594
1595 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1596 {
1597         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1598         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1599         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1600         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1601                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1602         rxon->channel = csa->channel;
1603         priv->staging_rxon.channel = csa->channel;
1604 }
1605
1606 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1607                                           struct iwl_rx_mem_buffer *rxb)
1608 {
1609 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1610         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1611         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1612
1613         if (!report->state) {
1614                 IWL_DEBUG(IWL_DL_11H,
1615                         "Spectrum Measure Notification: Start\n");
1616                 return;
1617         }
1618
1619         memcpy(&priv->measure_report, report, sizeof(*report));
1620         priv->measurement_status |= MEASUREMENT_READY;
1621 #endif
1622 }
1623
1624 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1625                                       struct iwl_rx_mem_buffer *rxb)
1626 {
1627 #ifdef CONFIG_IWLWIFI_DEBUG
1628         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1629         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1630         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1631                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1632 #endif
1633 }
1634
1635 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1636                                              struct iwl_rx_mem_buffer *rxb)
1637 {
1638         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1639         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1640                         "notification for %s:\n",
1641                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1642         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1643 }
1644
1645 static void iwl4965_bg_beacon_update(struct work_struct *work)
1646 {
1647         struct iwl_priv *priv =
1648                 container_of(work, struct iwl_priv, beacon_update);
1649         struct sk_buff *beacon;
1650
1651         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1652         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1653
1654         if (!beacon) {
1655                 IWL_ERROR("update beacon failed\n");
1656                 return;
1657         }
1658
1659         mutex_lock(&priv->mutex);
1660         /* new beacon skb is allocated every time; dispose previous.*/
1661         if (priv->ibss_beacon)
1662                 dev_kfree_skb(priv->ibss_beacon);
1663
1664         priv->ibss_beacon = beacon;
1665         mutex_unlock(&priv->mutex);
1666
1667         iwl4965_send_beacon_cmd(priv);
1668 }
1669
1670 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1671                                 struct iwl_rx_mem_buffer *rxb)
1672 {
1673 #ifdef CONFIG_IWLWIFI_DEBUG
1674         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1675         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1676         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1677
1678         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1679                 "tsf %d %d rate %d\n",
1680                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1681                 beacon->beacon_notify_hdr.failure_frame,
1682                 le32_to_cpu(beacon->ibss_mgr_status),
1683                 le32_to_cpu(beacon->high_tsf),
1684                 le32_to_cpu(beacon->low_tsf), rate);
1685 #endif
1686
1687         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1688             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1689                 queue_work(priv->workqueue, &priv->beacon_update);
1690 }
1691
1692 /* Service response to REPLY_SCAN_CMD (0x80) */
1693 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
1694                               struct iwl_rx_mem_buffer *rxb)
1695 {
1696 #ifdef CONFIG_IWLWIFI_DEBUG
1697         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1698         struct iwl4965_scanreq_notification *notif =
1699             (struct iwl4965_scanreq_notification *)pkt->u.raw;
1700
1701         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1702 #endif
1703 }
1704
1705 /* Service SCAN_START_NOTIFICATION (0x82) */
1706 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
1707                                     struct iwl_rx_mem_buffer *rxb)
1708 {
1709         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1710         struct iwl4965_scanstart_notification *notif =
1711             (struct iwl4965_scanstart_notification *)pkt->u.raw;
1712         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1713         IWL_DEBUG_SCAN("Scan start: "
1714                        "%d [802.11%s] "
1715                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1716                        notif->channel,
1717                        notif->band ? "bg" : "a",
1718                        notif->tsf_high,
1719                        notif->tsf_low, notif->status, notif->beacon_timer);
1720 }
1721
1722 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1723 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
1724                                       struct iwl_rx_mem_buffer *rxb)
1725 {
1726         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1727         struct iwl4965_scanresults_notification *notif =
1728             (struct iwl4965_scanresults_notification *)pkt->u.raw;
1729
1730         IWL_DEBUG_SCAN("Scan ch.res: "
1731                        "%d [802.11%s] "
1732                        "(TSF: 0x%08X:%08X) - %d "
1733                        "elapsed=%lu usec (%dms since last)\n",
1734                        notif->channel,
1735                        notif->band ? "bg" : "a",
1736                        le32_to_cpu(notif->tsf_high),
1737                        le32_to_cpu(notif->tsf_low),
1738                        le32_to_cpu(notif->statistics[0]),
1739                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1740                        jiffies_to_msecs(elapsed_jiffies
1741                                         (priv->last_scan_jiffies, jiffies)));
1742
1743         priv->last_scan_jiffies = jiffies;
1744         priv->next_scan_jiffies = 0;
1745 }
1746
1747 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1748 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
1749                                        struct iwl_rx_mem_buffer *rxb)
1750 {
1751         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1752         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1753
1754         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1755                        scan_notif->scanned_channels,
1756                        scan_notif->tsf_low,
1757                        scan_notif->tsf_high, scan_notif->status);
1758
1759         /* The HW is no longer scanning */
1760         clear_bit(STATUS_SCAN_HW, &priv->status);
1761
1762         /* The scan completion notification came in, so kill that timer... */
1763         cancel_delayed_work(&priv->scan_check);
1764
1765         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1766                        (priv->scan_bands == 2) ? "2.4" : "5.2",
1767                        jiffies_to_msecs(elapsed_jiffies
1768                                         (priv->scan_pass_start, jiffies)));
1769
1770         /* Remove this scanned band from the list
1771          * of pending bands to scan */
1772         priv->scan_bands--;
1773
1774         /* If a request to abort was given, or the scan did not succeed
1775          * then we reset the scan state machine and terminate,
1776          * re-queuing another scan if one has been requested */
1777         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1778                 IWL_DEBUG_INFO("Aborted scan completed.\n");
1779                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1780         } else {
1781                 /* If there are more bands on this scan pass reschedule */
1782                 if (priv->scan_bands > 0)
1783                         goto reschedule;
1784         }
1785
1786         priv->last_scan_jiffies = jiffies;
1787         priv->next_scan_jiffies = 0;
1788         IWL_DEBUG_INFO("Setting scan to off\n");
1789
1790         clear_bit(STATUS_SCANNING, &priv->status);
1791
1792         IWL_DEBUG_INFO("Scan took %dms\n",
1793                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1794
1795         queue_work(priv->workqueue, &priv->scan_completed);
1796
1797         return;
1798
1799 reschedule:
1800         priv->scan_pass_start = jiffies;
1801         queue_work(priv->workqueue, &priv->request_scan);
1802 }
1803
1804 /* Handle notification from uCode that card's power state is changing
1805  * due to software, hardware, or critical temperature RFKILL */
1806 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1807                                     struct iwl_rx_mem_buffer *rxb)
1808 {
1809         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1810         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1811         unsigned long status = priv->status;
1812
1813         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1814                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1815                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1816
1817         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1818                      RF_CARD_DISABLED)) {
1819
1820                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1821                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1822
1823                 if (!iwl_grab_nic_access(priv)) {
1824                         iwl_write_direct32(
1825                                 priv, HBUS_TARG_MBX_C,
1826                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1827
1828                         iwl_release_nic_access(priv);
1829                 }
1830
1831                 if (!(flags & RXON_CARD_DISABLED)) {
1832                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1833                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1834                         if (!iwl_grab_nic_access(priv)) {
1835                                 iwl_write_direct32(
1836                                         priv, HBUS_TARG_MBX_C,
1837                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1838
1839                                 iwl_release_nic_access(priv);
1840                         }
1841                 }
1842
1843                 if (flags & RF_CARD_DISABLED) {
1844                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1845                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1846                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1847                         if (!iwl_grab_nic_access(priv))
1848                                 iwl_release_nic_access(priv);
1849                 }
1850         }
1851
1852         if (flags & HW_CARD_DISABLED)
1853                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1854         else
1855                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1856
1857
1858         if (flags & SW_CARD_DISABLED)
1859                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1860         else
1861                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1862
1863         if (!(flags & RXON_CARD_DISABLED))
1864                 iwl4965_scan_cancel(priv);
1865
1866         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1867              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1868             (test_bit(STATUS_RF_KILL_SW, &status) !=
1869              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1870                 queue_work(priv->workqueue, &priv->rf_kill);
1871         else
1872                 wake_up_interruptible(&priv->wait_command_queue);
1873 }
1874
1875 /**
1876  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1877  *
1878  * Setup the RX handlers for each of the reply types sent from the uCode
1879  * to the host.
1880  *
1881  * This function chains into the hardware specific files for them to setup
1882  * any hardware specific handlers as well.
1883  */
1884 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1885 {
1886         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1887         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1888         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1889         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1890             iwl4965_rx_spectrum_measure_notif;
1891         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1892         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1893             iwl4965_rx_pm_debug_statistics_notif;
1894         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1895
1896         /*
1897          * The same handler is used for both the REPLY to a discrete
1898          * statistics request from the host as well as for the periodic
1899          * statistics notifications (after received beacons) from the uCode.
1900          */
1901         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1902         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1903
1904         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1905         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
1906         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1907             iwl4965_rx_scan_results_notif;
1908         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1909             iwl4965_rx_scan_complete_notif;
1910         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1911
1912         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1913             iwl_rx_missed_beacon_notif;
1914
1915         /* Set up hardware specific Rx handlers */
1916         priv->cfg->ops->lib->rx_handler_setup(priv);
1917 }
1918
1919 /*
1920  * this should be called while priv->lock is locked
1921 */
1922 static void __iwl_rx_replenish(struct iwl_priv *priv)
1923 {
1924         iwl_rx_allocate(priv);
1925         iwl_rx_queue_restock(priv);
1926 }
1927
1928
1929 /**
1930  * iwl_rx_handle - Main entry function for receiving responses from uCode
1931  *
1932  * Uses the priv->rx_handlers callback function array to invoke
1933  * the appropriate handlers, including command responses,
1934  * frame-received notifications, and other notifications.
1935  */
1936 void iwl_rx_handle(struct iwl_priv *priv)
1937 {
1938         struct iwl_rx_mem_buffer *rxb;
1939         struct iwl_rx_packet *pkt;
1940         struct iwl_rx_queue *rxq = &priv->rxq;
1941         u32 r, i;
1942         int reclaim;
1943         unsigned long flags;
1944         u8 fill_rx = 0;
1945         u32 count = 8;
1946
1947         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1948          * buffer that the driver may process (last buffer filled by ucode). */
1949         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1950         i = rxq->read;
1951
1952         /* Rx interrupt, but nothing sent from uCode */
1953         if (i == r)
1954                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1955
1956         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1957                 fill_rx = 1;
1958
1959         while (i != r) {
1960                 rxb = rxq->queue[i];
1961
1962                 /* If an RXB doesn't have a Rx queue slot associated with it,
1963                  * then a bug has been introduced in the queue refilling
1964                  * routines -- catch it here */
1965                 BUG_ON(rxb == NULL);
1966
1967                 rxq->queue[i] = NULL;
1968
1969                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1970                                             priv->hw_params.rx_buf_size,
1971                                             PCI_DMA_FROMDEVICE);
1972                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1973
1974                 /* Reclaim a command buffer only if this packet is a response
1975                  *   to a (driver-originated) command.
1976                  * If the packet (e.g. Rx frame) originated from uCode,
1977                  *   there is no command buffer to reclaim.
1978                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1979                  *   but apparently a few don't get set; catch them here. */
1980                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1981                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1982                         (pkt->hdr.cmd != REPLY_RX) &&
1983                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1984                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1985                         (pkt->hdr.cmd != REPLY_TX);
1986
1987                 /* Based on type of command response or notification,
1988                  *   handle those that need handling via function in
1989                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1990                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1991                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1992                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1993                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1994                 } else {
1995                         /* No handling needed */
1996                         IWL_DEBUG(IWL_DL_RX,
1997                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1998                                 r, i, get_cmd_string(pkt->hdr.cmd),
1999                                 pkt->hdr.cmd);
2000                 }
2001
2002                 if (reclaim) {
2003                         /* Invoke any callbacks, transfer the skb to caller, and
2004                          * fire off the (possibly) blocking iwl_send_cmd()
2005                          * as we reclaim the driver command queue */
2006                         if (rxb && rxb->skb)
2007                                 iwl_tx_cmd_complete(priv, rxb);
2008                         else
2009                                 IWL_WARNING("Claim null rxb?\n");
2010                 }
2011
2012                 /* For now we just don't re-use anything.  We can tweak this
2013                  * later to try and re-use notification packets and SKBs that
2014                  * fail to Rx correctly */
2015                 if (rxb->skb != NULL) {
2016                         priv->alloc_rxb_skb--;
2017                         dev_kfree_skb_any(rxb->skb);
2018                         rxb->skb = NULL;
2019                 }
2020
2021                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2022                                  priv->hw_params.rx_buf_size,
2023                                  PCI_DMA_FROMDEVICE);
2024                 spin_lock_irqsave(&rxq->lock, flags);
2025                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2026                 spin_unlock_irqrestore(&rxq->lock, flags);
2027                 i = (i + 1) & RX_QUEUE_MASK;
2028                 /* If there are a lot of unused frames,
2029                  * restock the Rx queue so ucode wont assert. */
2030                 if (fill_rx) {
2031                         count++;
2032                         if (count >= 8) {
2033                                 priv->rxq.read = i;
2034                                 __iwl_rx_replenish(priv);
2035                                 count = 0;
2036                         }
2037                 }
2038         }
2039
2040         /* Backtrack one entry */
2041         priv->rxq.read = i;
2042         iwl_rx_queue_restock(priv);
2043 }
2044 /* Convert linear signal-to-noise ratio into dB */
2045 static u8 ratio2dB[100] = {
2046 /*       0   1   2   3   4   5   6   7   8   9 */
2047          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2048         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2049         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2050         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2051         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2052         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2053         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2054         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2055         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2056         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2057 };
2058
2059 /* Calculates a relative dB value from a ratio of linear
2060  *   (i.e. not dB) signal levels.
2061  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2062 int iwl4965_calc_db_from_ratio(int sig_ratio)
2063 {
2064         /* 1000:1 or higher just report as 60 dB */
2065         if (sig_ratio >= 1000)
2066                 return 60;
2067
2068         /* 100:1 or higher, divide by 10 and use table,
2069          *   add 20 dB to make up for divide by 10 */
2070         if (sig_ratio >= 100)
2071                 return (20 + (int)ratio2dB[sig_ratio/10]);
2072
2073         /* We shouldn't see this */
2074         if (sig_ratio < 1)
2075                 return 0;
2076
2077         /* Use table for ratios 1:1 - 99:1 */
2078         return (int)ratio2dB[sig_ratio];
2079 }
2080
2081 #define PERFECT_RSSI (-20) /* dBm */
2082 #define WORST_RSSI (-95)   /* dBm */
2083 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2084
2085 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2086  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2087  *   about formulas used below. */
2088 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2089 {
2090         int sig_qual;
2091         int degradation = PERFECT_RSSI - rssi_dbm;
2092
2093         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2094          * as indicator; formula is (signal dbm - noise dbm).
2095          * SNR at or above 40 is a great signal (100%).
2096          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2097          * Weakest usable signal is usually 10 - 15 dB SNR. */
2098         if (noise_dbm) {
2099                 if (rssi_dbm - noise_dbm >= 40)
2100                         return 100;
2101                 else if (rssi_dbm < noise_dbm)
2102                         return 0;
2103                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2104
2105         /* Else use just the signal level.
2106          * This formula is a least squares fit of data points collected and
2107          *   compared with a reference system that had a percentage (%) display
2108          *   for signal quality. */
2109         } else
2110                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2111                             (15 * RSSI_RANGE + 62 * degradation)) /
2112                            (RSSI_RANGE * RSSI_RANGE);
2113
2114         if (sig_qual > 100)
2115                 sig_qual = 100;
2116         else if (sig_qual < 1)
2117                 sig_qual = 0;
2118
2119         return sig_qual;
2120 }
2121
2122 #ifdef CONFIG_IWLWIFI_DEBUG
2123 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2124 {
2125         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2126         DECLARE_MAC_BUF(mac);
2127
2128         IWL_DEBUG_RADIO("RX CONFIG:\n");
2129         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2130         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2131         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2132         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2133                         le32_to_cpu(rxon->filter_flags));
2134         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2135         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2136                         rxon->ofdm_basic_rates);
2137         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2138         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2139                         print_mac(mac, rxon->node_addr));
2140         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2141                         print_mac(mac, rxon->bssid_addr));
2142         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2143 }
2144 #endif
2145
2146 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2147 {
2148         IWL_DEBUG_ISR("Enabling interrupts\n");
2149         set_bit(STATUS_INT_ENABLED, &priv->status);
2150         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2151 }
2152
2153 /* call this function to flush any scheduled tasklet */
2154 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2155 {
2156         /* wait to make sure we flush pedding tasklet*/
2157         synchronize_irq(priv->pci_dev->irq);
2158         tasklet_kill(&priv->irq_tasklet);
2159 }
2160
2161 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2162 {
2163         clear_bit(STATUS_INT_ENABLED, &priv->status);
2164
2165         /* disable interrupts from uCode/NIC to host */
2166         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2167
2168         /* acknowledge/clear/reset any interrupts still pending
2169          * from uCode or flow handler (Rx/Tx DMA) */
2170         iwl_write32(priv, CSR_INT, 0xffffffff);
2171         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2172         IWL_DEBUG_ISR("Disabled interrupts\n");
2173 }
2174
2175
2176 /**
2177  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2178  */
2179 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2180 {
2181         /* Set the FW error flag -- cleared on iwl4965_down */
2182         set_bit(STATUS_FW_ERROR, &priv->status);
2183
2184         /* Cancel currently queued command. */
2185         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2186
2187 #ifdef CONFIG_IWLWIFI_DEBUG
2188         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2189                 iwl_dump_nic_error_log(priv);
2190                 iwl_dump_nic_event_log(priv);
2191                 iwl4965_print_rx_config_cmd(priv);
2192         }
2193 #endif
2194
2195         wake_up_interruptible(&priv->wait_command_queue);
2196
2197         /* Keep the restart process from trying to send host
2198          * commands by clearing the INIT status bit */
2199         clear_bit(STATUS_READY, &priv->status);
2200
2201         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2202                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2203                           "Restarting adapter due to uCode error.\n");
2204
2205                 if (iwl_is_associated(priv)) {
2206                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2207                                sizeof(priv->recovery_rxon));
2208                         priv->error_recovering = 1;
2209                 }
2210                 if (priv->cfg->mod_params->restart_fw)
2211                         queue_work(priv->workqueue, &priv->restart);
2212         }
2213 }
2214
2215 static void iwl4965_error_recovery(struct iwl_priv *priv)
2216 {
2217         unsigned long flags;
2218
2219         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2220                sizeof(priv->staging_rxon));
2221         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2222         iwl4965_commit_rxon(priv);
2223
2224         iwl_rxon_add_station(priv, priv->bssid, 1);
2225
2226         spin_lock_irqsave(&priv->lock, flags);
2227         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2228         priv->error_recovering = 0;
2229         spin_unlock_irqrestore(&priv->lock, flags);
2230 }
2231
2232 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2233 {
2234         u32 inta, handled = 0;
2235         u32 inta_fh;
2236         unsigned long flags;
2237 #ifdef CONFIG_IWLWIFI_DEBUG
2238         u32 inta_mask;
2239 #endif
2240
2241         spin_lock_irqsave(&priv->lock, flags);
2242
2243         /* Ack/clear/reset pending uCode interrupts.
2244          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2245          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2246         inta = iwl_read32(priv, CSR_INT);
2247         iwl_write32(priv, CSR_INT, inta);
2248
2249         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2250          * Any new interrupts that happen after this, either while we're
2251          * in this tasklet, or later, will show up in next ISR/tasklet. */
2252         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2253         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2254
2255 #ifdef CONFIG_IWLWIFI_DEBUG
2256         if (priv->debug_level & IWL_DL_ISR) {
2257                 /* just for debug */
2258                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2259                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2260                               inta, inta_mask, inta_fh);
2261         }
2262 #endif
2263
2264         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2265          * atomic, make sure that inta covers all the interrupts that
2266          * we've discovered, even if FH interrupt came in just after
2267          * reading CSR_INT. */
2268         if (inta_fh & CSR49_FH_INT_RX_MASK)
2269                 inta |= CSR_INT_BIT_FH_RX;
2270         if (inta_fh & CSR49_FH_INT_TX_MASK)
2271                 inta |= CSR_INT_BIT_FH_TX;
2272
2273         /* Now service all interrupt bits discovered above. */
2274         if (inta & CSR_INT_BIT_HW_ERR) {
2275                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2276
2277                 /* Tell the device to stop sending interrupts */
2278                 iwl4965_disable_interrupts(priv);
2279
2280                 iwl4965_irq_handle_error(priv);
2281
2282                 handled |= CSR_INT_BIT_HW_ERR;
2283
2284                 spin_unlock_irqrestore(&priv->lock, flags);
2285
2286                 return;
2287         }
2288
2289 #ifdef CONFIG_IWLWIFI_DEBUG
2290         if (priv->debug_level & (IWL_DL_ISR)) {
2291                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2292                 if (inta & CSR_INT_BIT_SCD)
2293                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2294                                       "the frame/frames.\n");
2295
2296                 /* Alive notification via Rx interrupt will do the real work */
2297                 if (inta & CSR_INT_BIT_ALIVE)
2298                         IWL_DEBUG_ISR("Alive interrupt\n");
2299         }
2300 #endif
2301         /* Safely ignore these bits for debug checks below */
2302         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2303
2304         /* HW RF KILL switch toggled */
2305         if (inta & CSR_INT_BIT_RF_KILL) {
2306                 int hw_rf_kill = 0;
2307                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2308                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2309                         hw_rf_kill = 1;
2310
2311                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2312                                 hw_rf_kill ? "disable radio":"enable radio");
2313
2314                 /* Queue restart only if RF_KILL switch was set to "kill"
2315                  *   when we loaded driver, and is now set to "enable".
2316                  * After we're Alive, RF_KILL gets handled by
2317                  *   iwl4965_rx_card_state_notif() */
2318                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2319                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2320                         queue_work(priv->workqueue, &priv->restart);
2321                 }
2322
2323                 handled |= CSR_INT_BIT_RF_KILL;
2324         }
2325
2326         /* Chip got too hot and stopped itself */
2327         if (inta & CSR_INT_BIT_CT_KILL) {
2328                 IWL_ERROR("Microcode CT kill error detected.\n");
2329                 handled |= CSR_INT_BIT_CT_KILL;
2330         }
2331
2332         /* Error detected by uCode */
2333         if (inta & CSR_INT_BIT_SW_ERR) {
2334                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2335                           inta);
2336                 iwl4965_irq_handle_error(priv);
2337                 handled |= CSR_INT_BIT_SW_ERR;
2338         }
2339
2340         /* uCode wakes up after power-down sleep */
2341         if (inta & CSR_INT_BIT_WAKEUP) {
2342                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2343                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2344                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2345                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2346                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2347                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2348                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2349                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2350
2351                 handled |= CSR_INT_BIT_WAKEUP;
2352         }
2353
2354         /* All uCode command responses, including Tx command responses,
2355          * Rx "responses" (frame-received notification), and other
2356          * notifications from uCode come through here*/
2357         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2358                 iwl_rx_handle(priv);
2359                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2360         }
2361
2362         if (inta & CSR_INT_BIT_FH_TX) {
2363                 IWL_DEBUG_ISR("Tx interrupt\n");
2364                 handled |= CSR_INT_BIT_FH_TX;
2365                 /* FH finished to write, send event */
2366                 priv->ucode_write_complete = 1;
2367                 wake_up_interruptible(&priv->wait_command_queue);
2368         }
2369
2370         if (inta & ~handled)
2371                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2372
2373         if (inta & ~CSR_INI_SET_MASK) {
2374                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2375                          inta & ~CSR_INI_SET_MASK);
2376                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2377         }
2378
2379         /* Re-enable all interrupts */
2380         /* only Re-enable if diabled by irq */
2381         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2382                 iwl4965_enable_interrupts(priv);
2383
2384 #ifdef CONFIG_IWLWIFI_DEBUG
2385         if (priv->debug_level & (IWL_DL_ISR)) {
2386                 inta = iwl_read32(priv, CSR_INT);
2387                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2388                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2389                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2390                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2391         }
2392 #endif
2393         spin_unlock_irqrestore(&priv->lock, flags);
2394 }
2395
2396 static irqreturn_t iwl4965_isr(int irq, void *data)
2397 {
2398         struct iwl_priv *priv = data;
2399         u32 inta, inta_mask;
2400         u32 inta_fh;
2401         if (!priv)
2402                 return IRQ_NONE;
2403
2404         spin_lock(&priv->lock);
2405
2406         /* Disable (but don't clear!) interrupts here to avoid
2407          *    back-to-back ISRs and sporadic interrupts from our NIC.
2408          * If we have something to service, the tasklet will re-enable ints.
2409          * If we *don't* have something, we'll re-enable before leaving here. */
2410         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2411         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2412
2413         /* Discover which interrupts are active/pending */
2414         inta = iwl_read32(priv, CSR_INT);
2415         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2416
2417         /* Ignore interrupt if there's nothing in NIC to service.
2418          * This may be due to IRQ shared with another device,
2419          * or due to sporadic interrupts thrown from our NIC. */
2420         if (!inta && !inta_fh) {
2421                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2422                 goto none;
2423         }
2424
2425         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2426                 /* Hardware disappeared. It might have already raised
2427                  * an interrupt */
2428                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2429                 goto unplugged;
2430         }
2431
2432         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2433                       inta, inta_mask, inta_fh);
2434
2435         inta &= ~CSR_INT_BIT_SCD;
2436
2437         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2438         if (likely(inta || inta_fh))
2439                 tasklet_schedule(&priv->irq_tasklet);
2440
2441  unplugged:
2442         spin_unlock(&priv->lock);
2443         return IRQ_HANDLED;
2444
2445  none:
2446         /* re-enable interrupts here since we don't have anything to service. */
2447         /* only Re-enable if diabled by irq */
2448         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2449                 iwl4965_enable_interrupts(priv);
2450         spin_unlock(&priv->lock);
2451         return IRQ_NONE;
2452 }
2453
2454 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2455  * sending probe req.  This should be set long enough to hear probe responses
2456  * from more than one AP.  */
2457 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2458 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2459
2460 /* For faster active scanning, scan will move to the next channel if fewer than
2461  * PLCP_QUIET_THRESH packets are heard on this channel within
2462  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2463  * time if it's a quiet channel (nothing responded to our probe, and there's
2464  * no other traffic).
2465  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2466 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2467 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2468
2469 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2470  * Must be set longer than active dwell time.
2471  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2472 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2473 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2474 #define IWL_PASSIVE_DWELL_BASE      (100)
2475 #define IWL_CHANNEL_TUNE_TIME       5
2476
2477 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2478                                                 enum ieee80211_band band)
2479 {
2480         if (band == IEEE80211_BAND_5GHZ)
2481                 return IWL_ACTIVE_DWELL_TIME_52;
2482         else
2483                 return IWL_ACTIVE_DWELL_TIME_24;
2484 }
2485
2486 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2487                                           enum ieee80211_band band)
2488 {
2489         u16 active = iwl4965_get_active_dwell_time(priv, band);
2490         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2491             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2492             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2493
2494         if (iwl_is_associated(priv)) {
2495                 /* If we're associated, we clamp the maximum passive
2496                  * dwell time to be 98% of the beacon interval (minus
2497                  * 2 * channel tune time) */
2498                 passive = priv->beacon_int;
2499                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2500                         passive = IWL_PASSIVE_DWELL_BASE;
2501                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2502         }
2503
2504         if (passive <= active)
2505                 passive = active + 1;
2506
2507         return passive;
2508 }
2509
2510 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2511                                          enum ieee80211_band band,
2512                                      u8 is_active, u8 direct_mask,
2513                                      struct iwl4965_scan_channel *scan_ch)
2514 {
2515         const struct ieee80211_channel *channels = NULL;
2516         const struct ieee80211_supported_band *sband;
2517         const struct iwl_channel_info *ch_info;
2518         u16 passive_dwell = 0;
2519         u16 active_dwell = 0;
2520         int added, i;
2521
2522         sband = iwl_get_hw_mode(priv, band);
2523         if (!sband)
2524                 return 0;
2525
2526         channels = sband->channels;
2527
2528         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2529         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2530
2531         for (i = 0, added = 0; i < sband->n_channels; i++) {
2532                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2533                         continue;
2534
2535                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2536
2537                 ch_info = iwl_get_channel_info(priv, band,
2538                                          scan_ch->channel);
2539                 if (!is_channel_valid(ch_info)) {
2540                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2541                                        scan_ch->channel);
2542                         continue;
2543                 }
2544
2545                 if (!is_active || is_channel_passive(ch_info) ||
2546                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2547                         scan_ch->type = 0;      /* passive */
2548                 else
2549                         scan_ch->type = 1;      /* active */
2550
2551                 if (scan_ch->type & 1)
2552                         scan_ch->type |= (direct_mask << 1);
2553
2554                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2555                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2556
2557                 /* Set txpower levels to defaults */
2558                 scan_ch->tpc.dsp_atten = 110;
2559                 /* scan_pwr_info->tpc.dsp_atten; */
2560
2561                 /*scan_pwr_info->tpc.tx_gain; */
2562                 if (band == IEEE80211_BAND_5GHZ)
2563                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2564                 else {
2565                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2566                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2567                          * power level:
2568                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2569                          */
2570                 }
2571
2572                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2573                                scan_ch->channel,
2574                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2575                                (scan_ch->type & 1) ?
2576                                active_dwell : passive_dwell);
2577
2578                 scan_ch++;
2579                 added++;
2580         }
2581
2582         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2583         return added;
2584 }
2585
2586 /******************************************************************************
2587  *
2588  * uCode download functions
2589  *
2590  ******************************************************************************/
2591
2592 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2593 {
2594         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2595         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2596         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2597         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2598         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2599         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2600 }
2601
2602 static void iwl4965_nic_start(struct iwl_priv *priv)
2603 {
2604         /* Remove all resets to allow NIC to operate */
2605         iwl_write32(priv, CSR_RESET, 0);
2606 }
2607
2608
2609 /**
2610  * iwl4965_read_ucode - Read uCode images from disk file.
2611  *
2612  * Copy into buffers for card to fetch via bus-mastering
2613  */
2614 static int iwl4965_read_ucode(struct iwl_priv *priv)
2615 {
2616         struct iwl4965_ucode *ucode;
2617         int ret;
2618         const struct firmware *ucode_raw;
2619         const char *name = priv->cfg->fw_name;
2620         u8 *src;
2621         size_t len;
2622         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2623
2624         /* Ask kernel firmware_class module to get the boot firmware off disk.
2625          * request_firmware() is synchronous, file is in memory on return. */
2626         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2627         if (ret < 0) {
2628                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2629                                         name, ret);
2630                 goto error;
2631         }
2632
2633         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2634                        name, ucode_raw->size);
2635
2636         /* Make sure that we got at least our header! */
2637         if (ucode_raw->size < sizeof(*ucode)) {
2638                 IWL_ERROR("File size way too small!\n");
2639                 ret = -EINVAL;
2640                 goto err_release;
2641         }
2642
2643         /* Data from ucode file:  header followed by uCode images */
2644         ucode = (void *)ucode_raw->data;
2645
2646         ver = le32_to_cpu(ucode->ver);
2647         inst_size = le32_to_cpu(ucode->inst_size);
2648         data_size = le32_to_cpu(ucode->data_size);
2649         init_size = le32_to_cpu(ucode->init_size);
2650         init_data_size = le32_to_cpu(ucode->init_data_size);
2651         boot_size = le32_to_cpu(ucode->boot_size);
2652
2653         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2654         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2655                        inst_size);
2656         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2657                        data_size);
2658         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2659                        init_size);
2660         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2661                        init_data_size);
2662         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2663                        boot_size);
2664
2665         /* Verify size of file vs. image size info in file's header */
2666         if (ucode_raw->size < sizeof(*ucode) +
2667                 inst_size + data_size + init_size +
2668                 init_data_size + boot_size) {
2669
2670                 IWL_DEBUG_INFO("uCode file size %d too small\n",
2671                                (int)ucode_raw->size);
2672                 ret = -EINVAL;
2673                 goto err_release;
2674         }
2675
2676         /* Verify that uCode images will fit in card's SRAM */
2677         if (inst_size > priv->hw_params.max_inst_size) {
2678                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2679                                inst_size);
2680                 ret = -EINVAL;
2681                 goto err_release;
2682         }
2683
2684         if (data_size > priv->hw_params.max_data_size) {
2685                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2686                                 data_size);
2687                 ret = -EINVAL;
2688                 goto err_release;
2689         }
2690         if (init_size > priv->hw_params.max_inst_size) {
2691                 IWL_DEBUG_INFO
2692                     ("uCode init instr len %d too large to fit in\n",
2693                       init_size);
2694                 ret = -EINVAL;
2695                 goto err_release;
2696         }
2697         if (init_data_size > priv->hw_params.max_data_size) {
2698                 IWL_DEBUG_INFO
2699                     ("uCode init data len %d too large to fit in\n",
2700                       init_data_size);
2701                 ret = -EINVAL;
2702                 goto err_release;
2703         }
2704         if (boot_size > priv->hw_params.max_bsm_size) {
2705                 IWL_DEBUG_INFO
2706                     ("uCode boot instr len %d too large to fit in\n",
2707                       boot_size);
2708                 ret = -EINVAL;
2709                 goto err_release;
2710         }
2711
2712         /* Allocate ucode buffers for card's bus-master loading ... */
2713
2714         /* Runtime instructions and 2 copies of data:
2715          * 1) unmodified from disk
2716          * 2) backup cache for save/restore during power-downs */
2717         priv->ucode_code.len = inst_size;
2718         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2719
2720         priv->ucode_data.len = data_size;
2721         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2722
2723         priv->ucode_data_backup.len = data_size;
2724         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2725
2726         /* Initialization instructions and data */
2727         if (init_size && init_data_size) {
2728                 priv->ucode_init.len = init_size;
2729                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2730
2731                 priv->ucode_init_data.len = init_data_size;
2732                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2733
2734                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2735                         goto err_pci_alloc;
2736         }
2737
2738         /* Bootstrap (instructions only, no data) */
2739         if (boot_size) {
2740                 priv->ucode_boot.len = boot_size;
2741                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2742
2743                 if (!priv->ucode_boot.v_addr)
2744                         goto err_pci_alloc;
2745         }
2746
2747         /* Copy images into buffers for card's bus-master reads ... */
2748
2749         /* Runtime instructions (first block of data in file) */
2750         src = &ucode->data[0];
2751         len = priv->ucode_code.len;
2752         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2753         memcpy(priv->ucode_code.v_addr, src, len);
2754         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2755                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2756
2757         /* Runtime data (2nd block)
2758          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
2759         src = &ucode->data[inst_size];
2760         len = priv->ucode_data.len;
2761         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2762         memcpy(priv->ucode_data.v_addr, src, len);
2763         memcpy(priv->ucode_data_backup.v_addr, src, len);
2764
2765         /* Initialization instructions (3rd block) */
2766         if (init_size) {
2767                 src = &ucode->data[inst_size + data_size];
2768                 len = priv->ucode_init.len;
2769                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2770                                 len);
2771                 memcpy(priv->ucode_init.v_addr, src, len);
2772         }
2773
2774         /* Initialization data (4th block) */
2775         if (init_data_size) {
2776                 src = &ucode->data[inst_size + data_size + init_size];
2777                 len = priv->ucode_init_data.len;
2778                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2779                                len);
2780                 memcpy(priv->ucode_init_data.v_addr, src, len);
2781         }
2782
2783         /* Bootstrap instructions (5th block) */
2784         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2785         len = priv->ucode_boot.len;
2786         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2787         memcpy(priv->ucode_boot.v_addr, src, len);
2788
2789         /* We have our copies now, allow OS release its copies */
2790         release_firmware(ucode_raw);
2791         return 0;
2792
2793  err_pci_alloc:
2794         IWL_ERROR("failed to allocate pci memory\n");
2795         ret = -ENOMEM;
2796         iwl4965_dealloc_ucode_pci(priv);
2797
2798  err_release:
2799         release_firmware(ucode_raw);
2800
2801  error:
2802         return ret;
2803 }
2804
2805 /**
2806  * iwl_alive_start - called after REPLY_ALIVE notification received
2807  *                   from protocol/runtime uCode (initialization uCode's
2808  *                   Alive gets handled by iwl_init_alive_start()).
2809  */
2810 static void iwl_alive_start(struct iwl_priv *priv)
2811 {
2812         int ret = 0;
2813
2814         IWL_DEBUG_INFO("Runtime Alive received.\n");
2815
2816         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2817                 /* We had an error bringing up the hardware, so take it
2818                  * all the way back down so we can try again */
2819                 IWL_DEBUG_INFO("Alive failed.\n");
2820                 goto restart;
2821         }
2822
2823         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2824          * This is a paranoid check, because we would not have gotten the
2825          * "runtime" alive if code weren't properly loaded.  */
2826         if (iwl_verify_ucode(priv)) {
2827                 /* Runtime instruction load was bad;
2828                  * take it all the way back down so we can try again */
2829                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2830                 goto restart;
2831         }
2832
2833         iwlcore_clear_stations_table(priv);
2834         ret = priv->cfg->ops->lib->alive_notify(priv);
2835         if (ret) {
2836                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2837                             ret);
2838                 goto restart;
2839         }
2840
2841         /* After the ALIVE response, we can send host commands to 4965 uCode */
2842         set_bit(STATUS_ALIVE, &priv->status);
2843
2844         /* Clear out the uCode error bit if it is set */
2845         clear_bit(STATUS_FW_ERROR, &priv->status);
2846
2847         if (iwl_is_rfkill(priv))
2848                 return;
2849
2850         ieee80211_wake_queues(priv->hw);
2851
2852         priv->active_rate = priv->rates_mask;
2853         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2854
2855         if (iwl_is_associated(priv)) {
2856                 struct iwl_rxon_cmd *active_rxon =
2857                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2858
2859                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2860                        sizeof(priv->staging_rxon));
2861                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2862         } else {
2863                 /* Initialize our rx_config data */
2864                 iwl4965_connection_init_rx_config(priv);
2865                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2866         }
2867
2868         /* Configure Bluetooth device coexistence support */
2869         iwl4965_send_bt_config(priv);
2870
2871         iwl_reset_run_time_calib(priv);
2872
2873         /* Configure the adapter for unassociated operation */
2874         iwl4965_commit_rxon(priv);
2875
2876         /* At this point, the NIC is initialized and operational */
2877         iwl4965_rf_kill_ct_config(priv);
2878
2879         iwl_leds_register(priv);
2880
2881         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2882         set_bit(STATUS_READY, &priv->status);
2883         wake_up_interruptible(&priv->wait_command_queue);
2884
2885         if (priv->error_recovering)
2886                 iwl4965_error_recovery(priv);
2887
2888         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2889         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2890         return;
2891
2892  restart:
2893         queue_work(priv->workqueue, &priv->restart);
2894 }
2895
2896 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
2897
2898 static void __iwl4965_down(struct iwl_priv *priv)
2899 {
2900         unsigned long flags;
2901         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2902
2903         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2904
2905         if (!exit_pending)
2906                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2907
2908         iwl_leds_unregister(priv);
2909
2910         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2911
2912         iwlcore_clear_stations_table(priv);
2913
2914         /* Unblock any waiting calls */
2915         wake_up_interruptible_all(&priv->wait_command_queue);
2916
2917         /* Wipe out the EXIT_PENDING status bit if we are not actually
2918          * exiting the module */
2919         if (!exit_pending)
2920                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2921
2922         /* stop and reset the on-board processor */
2923         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2924
2925         /* tell the device to stop sending interrupts */
2926         spin_lock_irqsave(&priv->lock, flags);
2927         iwl4965_disable_interrupts(priv);
2928         spin_unlock_irqrestore(&priv->lock, flags);
2929         iwl_synchronize_irq(priv);
2930
2931         if (priv->mac80211_registered)
2932                 ieee80211_stop_queues(priv->hw);
2933
2934         /* If we have not previously called iwl4965_init() then
2935          * clear all bits but the RF Kill and SUSPEND bits and return */
2936         if (!iwl_is_init(priv)) {
2937                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2938                                         STATUS_RF_KILL_HW |
2939                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2940                                         STATUS_RF_KILL_SW |
2941                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2942                                         STATUS_GEO_CONFIGURED |
2943                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2944                                         STATUS_IN_SUSPEND;
2945                 goto exit;
2946         }
2947
2948         /* ...otherwise clear out all the status bits but the RF Kill and
2949          * SUSPEND bits and continue taking the NIC down. */
2950         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2951                                 STATUS_RF_KILL_HW |
2952                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2953                                 STATUS_RF_KILL_SW |
2954                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2955                                 STATUS_GEO_CONFIGURED |
2956                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2957                                 STATUS_IN_SUSPEND |
2958                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2959                                 STATUS_FW_ERROR;
2960
2961         spin_lock_irqsave(&priv->lock, flags);
2962         iwl_clear_bit(priv, CSR_GP_CNTRL,
2963                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2964         spin_unlock_irqrestore(&priv->lock, flags);
2965
2966         iwl_txq_ctx_stop(priv);
2967         iwl_rxq_stop(priv);
2968
2969         spin_lock_irqsave(&priv->lock, flags);
2970         if (!iwl_grab_nic_access(priv)) {
2971                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2972                                          APMG_CLK_VAL_DMA_CLK_RQT);
2973                 iwl_release_nic_access(priv);
2974         }
2975         spin_unlock_irqrestore(&priv->lock, flags);
2976
2977         udelay(5);
2978
2979         /* FIXME: apm_ops.suspend(priv) */
2980         priv->cfg->ops->lib->apm_ops.reset(priv);
2981         priv->cfg->ops->lib->free_shared_mem(priv);
2982
2983  exit:
2984         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2985
2986         if (priv->ibss_beacon)
2987                 dev_kfree_skb(priv->ibss_beacon);
2988         priv->ibss_beacon = NULL;
2989
2990         /* clear out any free frames */
2991         iwl_clear_free_frames(priv);
2992 }
2993
2994 static void iwl4965_down(struct iwl_priv *priv)
2995 {
2996         mutex_lock(&priv->mutex);
2997         __iwl4965_down(priv);
2998         mutex_unlock(&priv->mutex);
2999
3000         iwl4965_cancel_deferred_work(priv);
3001 }
3002
3003 #define MAX_HW_RESTARTS 5
3004
3005 static int __iwl4965_up(struct iwl_priv *priv)
3006 {
3007         int i;
3008         int ret;
3009
3010         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3011                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3012                 return -EIO;
3013         }
3014
3015         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3016                 IWL_WARNING("Radio disabled by SW RF kill (module "
3017                             "parameter)\n");
3018                 iwl_rfkill_set_hw_state(priv);
3019                 return -ENODEV;
3020         }
3021
3022         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3023                 IWL_ERROR("ucode not available for device bringup\n");
3024                 return -EIO;
3025         }
3026
3027         /* If platform's RF_KILL switch is NOT set to KILL */
3028         if (iwl_read32(priv, CSR_GP_CNTRL) &
3029                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3030                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3031         else {
3032                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3033                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3034                         iwl_rfkill_set_hw_state(priv);
3035                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3036                         return -ENODEV;
3037                 }
3038         }
3039
3040         iwl_rfkill_set_hw_state(priv);
3041         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3042
3043         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3044         if (ret) {
3045                 IWL_ERROR("Unable to allocate shared memory\n");
3046                 return ret;
3047         }
3048
3049         ret = iwl_hw_nic_init(priv);
3050         if (ret) {
3051                 IWL_ERROR("Unable to init nic\n");
3052                 return ret;
3053         }
3054
3055         /* make sure rfkill handshake bits are cleared */
3056         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3057         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3058                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3059
3060         /* clear (again), then enable host interrupts */
3061         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3062         iwl4965_enable_interrupts(priv);
3063
3064         /* really make sure rfkill handshake bits are cleared */
3065         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3066         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3067
3068         /* Copy original ucode data image from disk into backup cache.
3069          * This will be used to initialize the on-board processor's
3070          * data SRAM for a clean start when the runtime program first loads. */
3071         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3072                priv->ucode_data.len);
3073
3074         /* We return success when we resume from suspend and rf_kill is on. */
3075         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3076                 return 0;
3077
3078         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3079
3080                 iwlcore_clear_stations_table(priv);
3081
3082                 /* load bootstrap state machine,
3083                  * load bootstrap program into processor's memory,
3084                  * prepare to load the "initialize" uCode */
3085                 ret = priv->cfg->ops->lib->load_ucode(priv);
3086
3087                 if (ret) {
3088                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3089                         continue;
3090                 }
3091
3092                 /* start card; "initialize" will load runtime ucode */
3093                 iwl4965_nic_start(priv);
3094
3095                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3096
3097                 return 0;
3098         }
3099
3100         set_bit(STATUS_EXIT_PENDING, &priv->status);
3101         __iwl4965_down(priv);
3102
3103         /* tried to restart and config the device for as long as our
3104          * patience could withstand */
3105         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3106         return -EIO;
3107 }
3108
3109
3110 /*****************************************************************************
3111  *
3112  * Workqueue callbacks
3113  *
3114  *****************************************************************************/
3115
3116 static void iwl_bg_init_alive_start(struct work_struct *data)
3117 {
3118         struct iwl_priv *priv =
3119             container_of(data, struct iwl_priv, init_alive_start.work);
3120
3121         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3122                 return;
3123
3124         mutex_lock(&priv->mutex);
3125         priv->cfg->ops->lib->init_alive_start(priv);
3126         mutex_unlock(&priv->mutex);
3127 }
3128
3129 static void iwl_bg_alive_start(struct work_struct *data)
3130 {
3131         struct iwl_priv *priv =
3132             container_of(data, struct iwl_priv, alive_start.work);
3133
3134         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3135                 return;
3136
3137         mutex_lock(&priv->mutex);
3138         iwl_alive_start(priv);
3139         mutex_unlock(&priv->mutex);
3140 }
3141
3142 static void iwl4965_bg_rf_kill(struct work_struct *work)
3143 {
3144         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3145
3146         wake_up_interruptible(&priv->wait_command_queue);
3147
3148         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3149                 return;
3150
3151         mutex_lock(&priv->mutex);
3152
3153         if (!iwl_is_rfkill(priv)) {
3154                 IWL_DEBUG(IWL_DL_RF_KILL,
3155                           "HW and/or SW RF Kill no longer active, restarting "
3156                           "device\n");
3157                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3158                         queue_work(priv->workqueue, &priv->restart);
3159         } else {
3160                 /* make sure mac80211 stop sending Tx frame */
3161                 if (priv->mac80211_registered)
3162                         ieee80211_stop_queues(priv->hw);
3163
3164                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3165                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3166                                           "disabled by SW switch\n");
3167                 else
3168                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3169                                     "Kill switch must be turned off for "
3170                                     "wireless networking to work.\n");
3171         }
3172         iwl_rfkill_set_hw_state(priv);
3173
3174         mutex_unlock(&priv->mutex);
3175 }
3176
3177 static void iwl4965_bg_set_monitor(struct work_struct *work)
3178 {
3179         struct iwl_priv *priv = container_of(work,
3180                                 struct iwl_priv, set_monitor);
3181
3182         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3183
3184         mutex_lock(&priv->mutex);
3185
3186         if (!iwl_is_ready(priv))
3187                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3188         else
3189                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3190                         IWL_ERROR("iwl4965_set_mode() failed\n");
3191
3192         mutex_unlock(&priv->mutex);
3193 }
3194
3195 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3196
3197 static void iwl4965_bg_scan_check(struct work_struct *data)
3198 {
3199         struct iwl_priv *priv =
3200             container_of(data, struct iwl_priv, scan_check.work);
3201
3202         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3203                 return;
3204
3205         mutex_lock(&priv->mutex);
3206         if (test_bit(STATUS_SCANNING, &priv->status) ||
3207             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3208                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3209                         "adapter (%dms)\n",
3210                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3211
3212                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3213                         iwl4965_send_scan_abort(priv);
3214         }
3215         mutex_unlock(&priv->mutex);
3216 }
3217
3218 static void iwl4965_bg_request_scan(struct work_struct *data)
3219 {
3220         struct iwl_priv *priv =
3221             container_of(data, struct iwl_priv, request_scan);
3222         struct iwl_host_cmd cmd = {
3223                 .id = REPLY_SCAN_CMD,
3224                 .len = sizeof(struct iwl4965_scan_cmd),
3225                 .meta.flags = CMD_SIZE_HUGE,
3226         };
3227         struct iwl4965_scan_cmd *scan;
3228         struct ieee80211_conf *conf = NULL;
3229         u16 cmd_len;
3230         enum ieee80211_band band;
3231         u8 direct_mask;
3232         int ret = 0;
3233
3234         conf = ieee80211_get_hw_conf(priv->hw);
3235
3236         mutex_lock(&priv->mutex);
3237
3238         if (!iwl_is_ready(priv)) {
3239                 IWL_WARNING("request scan called when driver not ready.\n");
3240                 goto done;
3241         }
3242
3243         /* Make sure the scan wasn't cancelled before this queued work
3244          * was given the chance to run... */
3245         if (!test_bit(STATUS_SCANNING, &priv->status))
3246                 goto done;
3247
3248         /* This should never be called or scheduled if there is currently
3249          * a scan active in the hardware. */
3250         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3251                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3252                                "Ignoring second request.\n");
3253                 ret = -EIO;
3254                 goto done;
3255         }
3256
3257         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3258                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3259                 goto done;
3260         }
3261
3262         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3263                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3264                 goto done;
3265         }
3266
3267         if (iwl_is_rfkill(priv)) {
3268                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3269                 goto done;
3270         }
3271
3272         if (!test_bit(STATUS_READY, &priv->status)) {
3273                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3274                 goto done;
3275         }
3276
3277         if (!priv->scan_bands) {
3278                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3279                 goto done;
3280         }
3281
3282         if (!priv->scan) {
3283                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3284                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3285                 if (!priv->scan) {
3286                         ret = -ENOMEM;
3287                         goto done;
3288                 }
3289         }
3290         scan = priv->scan;
3291         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3292
3293         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3294         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3295
3296         if (iwl_is_associated(priv)) {
3297                 u16 interval = 0;
3298                 u32 extra;
3299                 u32 suspend_time = 100;
3300                 u32 scan_suspend_time = 100;
3301                 unsigned long flags;
3302
3303                 IWL_DEBUG_INFO("Scanning while associated...\n");
3304
3305                 spin_lock_irqsave(&priv->lock, flags);
3306                 interval = priv->beacon_int;
3307                 spin_unlock_irqrestore(&priv->lock, flags);
3308
3309                 scan->suspend_time = 0;
3310                 scan->max_out_time = cpu_to_le32(200 * 1024);
3311                 if (!interval)
3312                         interval = suspend_time;
3313
3314                 extra = (suspend_time / interval) << 22;
3315                 scan_suspend_time = (extra |
3316                     ((suspend_time % interval) * 1024));
3317                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3318                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3319                                scan_suspend_time, interval);
3320         }
3321
3322         /* We should add the ability for user to lock to PASSIVE ONLY */
3323         if (priv->one_direct_scan) {
3324                 IWL_DEBUG_SCAN
3325                     ("Kicking off one direct scan for '%s'\n",
3326                      iwl4965_escape_essid(priv->direct_ssid,
3327                                       priv->direct_ssid_len));
3328                 scan->direct_scan[0].id = WLAN_EID_SSID;
3329                 scan->direct_scan[0].len = priv->direct_ssid_len;
3330                 memcpy(scan->direct_scan[0].ssid,
3331                        priv->direct_ssid, priv->direct_ssid_len);
3332                 direct_mask = 1;
3333         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3334                 IWL_DEBUG_SCAN
3335                   ("Kicking off one direct scan for '%s' when not associated\n",
3336                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3337                 scan->direct_scan[0].id = WLAN_EID_SSID;
3338                 scan->direct_scan[0].len = priv->essid_len;
3339                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3340                 direct_mask = 1;
3341         } else {
3342                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3343                 direct_mask = 0;
3344         }
3345
3346         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3347         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3348         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3349
3350
3351         switch (priv->scan_bands) {
3352         case 2:
3353                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3354                 scan->tx_cmd.rate_n_flags =
3355                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3356                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3357
3358                 scan->good_CRC_th = 0;
3359                 band = IEEE80211_BAND_2GHZ;
3360                 break;
3361
3362         case 1:
3363                 scan->tx_cmd.rate_n_flags =
3364                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3365                                 RATE_MCS_ANT_B_MSK);
3366                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3367                 band = IEEE80211_BAND_5GHZ;
3368                 break;
3369
3370         default:
3371                 IWL_WARNING("Invalid scan band count\n");
3372                 goto done;
3373         }
3374
3375         /* We don't build a direct scan probe request; the uCode will do
3376          * that based on the direct_mask added to each channel entry */
3377         cmd_len = iwl4965_fill_probe_req(priv, band,
3378                                         (struct ieee80211_mgmt *)scan->data,
3379                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3380
3381         scan->tx_cmd.len = cpu_to_le16(cmd_len);
3382         /* select Rx chains */
3383
3384         /* Force use of chains B and C (0x6) for scan Rx.
3385          * Avoid A (0x1) because of its off-channel reception on A-band.
3386          * MIMO is not used here, but value is required to make uCode happy. */
3387         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3388                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3389                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3390                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3391
3392         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3393                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3394
3395         if (direct_mask)
3396                 scan->channel_count =
3397                         iwl4965_get_channels_for_scan(
3398                                 priv, band, 1, /* active */
3399                                 direct_mask,
3400                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3401         else
3402                 scan->channel_count =
3403                         iwl4965_get_channels_for_scan(
3404                                 priv, band, 0, /* passive */
3405                                 direct_mask,
3406                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3407
3408         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3409                                RXON_FILTER_BCON_AWARE_MSK);
3410         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3411             scan->channel_count * sizeof(struct iwl4965_scan_channel);
3412         cmd.data = scan;
3413         scan->len = cpu_to_le16(cmd.len);
3414
3415         set_bit(STATUS_SCAN_HW, &priv->status);
3416         ret = iwl_send_cmd_sync(priv, &cmd);
3417         if (ret)
3418                 goto done;
3419
3420         queue_delayed_work(priv->workqueue, &priv->scan_check,
3421                            IWL_SCAN_CHECK_WATCHDOG);
3422
3423         mutex_unlock(&priv->mutex);
3424         return;
3425
3426  done:
3427         /* inform mac80211 scan aborted */
3428         queue_work(priv->workqueue, &priv->scan_completed);
3429         mutex_unlock(&priv->mutex);
3430 }
3431
3432 static void iwl4965_bg_up(struct work_struct *data)
3433 {
3434         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3435
3436         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3437                 return;
3438
3439         mutex_lock(&priv->mutex);
3440         __iwl4965_up(priv);
3441         mutex_unlock(&priv->mutex);
3442 }
3443
3444 static void iwl4965_bg_restart(struct work_struct *data)
3445 {
3446         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3447
3448         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3449                 return;
3450
3451         iwl4965_down(priv);
3452         queue_work(priv->workqueue, &priv->up);
3453 }
3454
3455 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3456 {
3457         struct iwl_priv *priv =
3458             container_of(data, struct iwl_priv, rx_replenish);
3459
3460         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3461                 return;
3462
3463         mutex_lock(&priv->mutex);
3464         iwl_rx_replenish(priv);
3465         mutex_unlock(&priv->mutex);
3466 }
3467
3468 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3469
3470 static void iwl4965_post_associate(struct iwl_priv *priv)
3471 {
3472         struct ieee80211_conf *conf = NULL;
3473         int ret = 0;
3474         DECLARE_MAC_BUF(mac);
3475
3476         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3477                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3478                 return;
3479         }
3480
3481         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3482                         priv->assoc_id,
3483                         print_mac(mac, priv->active_rxon.bssid_addr));
3484
3485
3486         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3487                 return;
3488
3489
3490         if (!priv->vif || !priv->is_open)
3491                 return;
3492
3493         iwl4965_scan_cancel_timeout(priv, 200);
3494
3495         conf = ieee80211_get_hw_conf(priv->hw);
3496
3497         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3498         iwl4965_commit_rxon(priv);
3499
3500         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3501         iwl4965_setup_rxon_timing(priv);
3502         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3503                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3504         if (ret)
3505                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3506                             "Attempting to continue.\n");
3507
3508         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3509
3510 #ifdef CONFIG_IWL4965_HT
3511         if (priv->current_ht_config.is_ht)
3512                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3513 #endif /* CONFIG_IWL4965_HT*/
3514         iwl_set_rxon_chain(priv);
3515         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3516
3517         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3518                         priv->assoc_id, priv->beacon_int);
3519
3520         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3521                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3522         else
3523                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3524
3525         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3526                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3527                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3528                 else
3529                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3530
3531                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3532                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3533
3534         }
3535
3536         iwl4965_commit_rxon(priv);
3537
3538         switch (priv->iw_mode) {
3539         case IEEE80211_IF_TYPE_STA:
3540                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3541                 break;
3542
3543         case IEEE80211_IF_TYPE_IBSS:
3544
3545                 /* clear out the station table */
3546                 iwlcore_clear_stations_table(priv);
3547
3548                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3549                 iwl_rxon_add_station(priv, priv->bssid, 0);
3550                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3551                 iwl4965_send_beacon_cmd(priv);
3552
3553                 break;
3554
3555         default:
3556                 IWL_ERROR("%s Should not be called in %d mode\n",
3557                                 __FUNCTION__, priv->iw_mode);
3558                 break;
3559         }
3560
3561         iwl4965_sequence_reset(priv);
3562
3563         /* Enable Rx differential gain and sensitivity calibrations */
3564         iwl_chain_noise_reset(priv);
3565         priv->start_calib = 1;
3566
3567         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3568                 priv->assoc_station_added = 1;
3569
3570         iwl4965_activate_qos(priv, 0);
3571
3572         iwl_power_update_mode(priv, 0);
3573         /* we have just associated, don't start scan too early */
3574         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3575 }
3576
3577
3578 static void iwl4965_bg_post_associate(struct work_struct *data)
3579 {
3580         struct iwl_priv *priv = container_of(data, struct iwl_priv,
3581                                              post_associate.work);
3582
3583         mutex_lock(&priv->mutex);
3584         iwl4965_post_associate(priv);
3585         mutex_unlock(&priv->mutex);
3586
3587 }
3588
3589 static void iwl4965_bg_abort_scan(struct work_struct *work)
3590 {
3591         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3592
3593         if (!iwl_is_ready(priv))
3594                 return;
3595
3596         mutex_lock(&priv->mutex);
3597
3598         set_bit(STATUS_SCAN_ABORTING, &priv->status);
3599         iwl4965_send_scan_abort(priv);
3600
3601         mutex_unlock(&priv->mutex);
3602 }
3603
3604 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3605
3606 static void iwl4965_bg_scan_completed(struct work_struct *work)
3607 {
3608         struct iwl_priv *priv =
3609             container_of(work, struct iwl_priv, scan_completed);
3610
3611         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
3612
3613         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3614                 return;
3615
3616         if (test_bit(STATUS_CONF_PENDING, &priv->status))
3617                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
3618
3619         ieee80211_scan_completed(priv->hw);
3620
3621         /* Since setting the TXPOWER may have been deferred while
3622          * performing the scan, fire one off */
3623         mutex_lock(&priv->mutex);
3624         iwl4965_hw_reg_send_txpower(priv);
3625         mutex_unlock(&priv->mutex);
3626 }
3627
3628 /*****************************************************************************
3629  *
3630  * mac80211 entry point functions
3631  *
3632  *****************************************************************************/
3633
3634 #define UCODE_READY_TIMEOUT     (2 * HZ)
3635
3636 static int iwl4965_mac_start(struct ieee80211_hw *hw)
3637 {
3638         struct iwl_priv *priv = hw->priv;
3639         int ret;
3640
3641         IWL_DEBUG_MAC80211("enter\n");
3642
3643         if (pci_enable_device(priv->pci_dev)) {
3644                 IWL_ERROR("Fail to pci_enable_device\n");
3645                 return -ENODEV;
3646         }
3647         pci_restore_state(priv->pci_dev);
3648         pci_enable_msi(priv->pci_dev);
3649
3650         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3651                           DRV_NAME, priv);
3652         if (ret) {
3653                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3654                 goto out_disable_msi;
3655         }
3656
3657         /* we should be verifying the device is ready to be opened */
3658         mutex_lock(&priv->mutex);
3659
3660         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
3661         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3662          * ucode filename and max sizes are card-specific. */
3663
3664         if (!priv->ucode_code.len) {
3665                 ret = iwl4965_read_ucode(priv);
3666                 if (ret) {
3667                         IWL_ERROR("Could not read microcode: %d\n", ret);
3668                         mutex_unlock(&priv->mutex);
3669                         goto out_release_irq;
3670                 }
3671         }
3672
3673         ret = __iwl4965_up(priv);
3674
3675         mutex_unlock(&priv->mutex);
3676
3677         if (ret)
3678                 goto out_release_irq;
3679
3680         IWL_DEBUG_INFO("Start UP work done.\n");
3681
3682         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3683                 return 0;
3684
3685         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3686          * mac80211 will not be run successfully. */
3687         if (priv->ucode_type == UCODE_RT) {
3688                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3689                                 test_bit(STATUS_READY, &priv->status),
3690                                 UCODE_READY_TIMEOUT);
3691                 if (!ret) {
3692                         if (!test_bit(STATUS_READY, &priv->status)) {
3693                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3694                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
3695                                 ret = -ETIMEDOUT;
3696                                 goto out_release_irq;
3697                         }
3698                 }
3699
3700                 priv->is_open = 1;
3701         }
3702         IWL_DEBUG_MAC80211("leave\n");
3703         return 0;
3704
3705 out_release_irq:
3706         free_irq(priv->pci_dev->irq, priv);
3707 out_disable_msi:
3708         pci_disable_msi(priv->pci_dev);
3709         pci_disable_device(priv->pci_dev);
3710         priv->is_open = 0;
3711         IWL_DEBUG_MAC80211("leave - failed\n");
3712         return ret;
3713 }
3714
3715 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
3716 {
3717         struct iwl_priv *priv = hw->priv;
3718
3719         IWL_DEBUG_MAC80211("enter\n");
3720
3721         if (!priv->is_open) {
3722                 IWL_DEBUG_MAC80211("leave - skip\n");
3723                 return;
3724         }
3725
3726         priv->is_open = 0;
3727
3728         if (iwl_is_ready_rf(priv)) {
3729                 /* stop mac, cancel any scan request and clear
3730                  * RXON_FILTER_ASSOC_MSK BIT
3731                  */
3732                 mutex_lock(&priv->mutex);
3733                 iwl4965_scan_cancel_timeout(priv, 100);
3734                 cancel_delayed_work(&priv->post_associate);
3735                 mutex_unlock(&priv->mutex);
3736         }
3737
3738         iwl4965_down(priv);
3739
3740         flush_workqueue(priv->workqueue);
3741         free_irq(priv->pci_dev->irq, priv);
3742         pci_disable_msi(priv->pci_dev);
3743         pci_save_state(priv->pci_dev);
3744         pci_disable_device(priv->pci_dev);
3745
3746         IWL_DEBUG_MAC80211("leave\n");
3747 }
3748
3749 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3750 {
3751         struct iwl_priv *priv = hw->priv;
3752
3753         IWL_DEBUG_MAC80211("enter\n");
3754
3755         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3756                 IWL_DEBUG_MAC80211("leave - monitor\n");
3757                 return -1;
3758         }
3759
3760         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3761                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3762
3763         if (iwl_tx_skb(priv, skb))
3764                 dev_kfree_skb_any(skb);
3765
3766         IWL_DEBUG_MAC80211("leave\n");
3767         return 0;
3768 }
3769
3770 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
3771                                  struct ieee80211_if_init_conf *conf)
3772 {
3773         struct iwl_priv *priv = hw->priv;
3774         unsigned long flags;
3775         DECLARE_MAC_BUF(mac);
3776
3777         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
3778
3779         if (priv->vif) {
3780                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
3781                 return -EOPNOTSUPP;
3782         }
3783
3784         spin_lock_irqsave(&priv->lock, flags);
3785         priv->vif = conf->vif;
3786
3787         spin_unlock_irqrestore(&priv->lock, flags);
3788
3789         mutex_lock(&priv->mutex);
3790
3791         if (conf->mac_addr) {
3792                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3793                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3794         }
3795
3796         if (iwl_is_ready(priv))
3797                 iwl4965_set_mode(priv, conf->type);
3798
3799         mutex_unlock(&priv->mutex);
3800
3801         IWL_DEBUG_MAC80211("leave\n");
3802         return 0;
3803 }
3804
3805 /**
3806  * iwl4965_mac_config - mac80211 config callback
3807  *
3808  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3809  * be set inappropriately and the driver currently sets the hardware up to
3810  * use it whenever needed.
3811  */
3812 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3813 {
3814         struct iwl_priv *priv = hw->priv;
3815         const struct iwl_channel_info *ch_info;
3816         unsigned long flags;
3817         int ret = 0;
3818
3819         mutex_lock(&priv->mutex);
3820         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3821
3822         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3823
3824         if (!iwl_is_ready(priv)) {
3825                 IWL_DEBUG_MAC80211("leave - not ready\n");
3826                 ret = -EIO;
3827                 goto out;
3828         }
3829
3830         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3831                      test_bit(STATUS_SCANNING, &priv->status))) {
3832                 IWL_DEBUG_MAC80211("leave - scanning\n");
3833                 set_bit(STATUS_CONF_PENDING, &priv->status);
3834                 mutex_unlock(&priv->mutex);
3835                 return 0;
3836         }
3837
3838         spin_lock_irqsave(&priv->lock, flags);
3839
3840         ch_info = iwl_get_channel_info(priv, conf->channel->band,
3841                         ieee80211_frequency_to_channel(conf->channel->center_freq));
3842         if (!is_channel_valid(ch_info)) {
3843                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3844                 spin_unlock_irqrestore(&priv->lock, flags);
3845                 ret = -EINVAL;
3846                 goto out;
3847         }
3848
3849 #ifdef CONFIG_IWL4965_HT
3850         /* if we are switching from ht to 2.4 clear flags
3851          * from any ht related info since 2.4 does not
3852          * support ht */
3853         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
3854 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3855             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3856 #endif
3857         )
3858                 priv->staging_rxon.flags = 0;
3859 #endif /* CONFIG_IWL4965_HT */
3860
3861         iwl_set_rxon_channel(priv, conf->channel->band,
3862                 ieee80211_frequency_to_channel(conf->channel->center_freq));
3863
3864         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
3865
3866         /* The list of supported rates and rate mask can be different
3867          * for each band; since the band may have changed, reset
3868          * the rate mask to what mac80211 lists */
3869         iwl4965_set_rate(priv);
3870
3871         spin_unlock_irqrestore(&priv->lock, flags);
3872
3873 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3874         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3875                 iwl4965_hw_channel_switch(priv, conf->channel);
3876                 goto out;
3877         }
3878 #endif
3879
3880         if (priv->cfg->ops->lib->radio_kill_sw)
3881                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
3882
3883         if (!conf->radio_enabled) {
3884                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3885                 goto out;
3886         }
3887
3888         if (iwl_is_rfkill(priv)) {
3889                 IWL_DEBUG_MAC80211("leave - RF kill\n");
3890                 ret = -EIO;
3891                 goto out;
3892         }
3893
3894         iwl4965_set_rate(priv);
3895
3896         if (memcmp(&priv->active_rxon,
3897                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3898                 iwl4965_commit_rxon(priv);
3899         else
3900                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3901
3902         IWL_DEBUG_MAC80211("leave\n");
3903
3904 out:
3905         clear_bit(STATUS_CONF_PENDING, &priv->status);
3906         mutex_unlock(&priv->mutex);
3907         return ret;
3908 }
3909
3910 static void iwl4965_config_ap(struct iwl_priv *priv)
3911 {
3912         int ret = 0;
3913
3914         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3915                 return;
3916
3917         /* The following should be done only at AP bring up */
3918         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3919
3920                 /* RXON - unassoc (to set timing command) */
3921                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3922                 iwl4965_commit_rxon(priv);
3923
3924                 /* RXON Timing */
3925                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3926                 iwl4965_setup_rxon_timing(priv);
3927                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3928                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
3929                 if (ret)
3930                         IWL_WARNING("REPLY_RXON_TIMING failed - "
3931                                         "Attempting to continue.\n");
3932
3933                 iwl_set_rxon_chain(priv);
3934
3935                 /* FIXME: what should be the assoc_id for AP? */
3936                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3937                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3938                         priv->staging_rxon.flags |=
3939                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3940                 else
3941                         priv->staging_rxon.flags &=
3942                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3943
3944                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3945                         if (priv->assoc_capability &
3946                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3947                                 priv->staging_rxon.flags |=
3948                                         RXON_FLG_SHORT_SLOT_MSK;
3949                         else
3950                                 priv->staging_rxon.flags &=
3951                                         ~RXON_FLG_SHORT_SLOT_MSK;
3952
3953                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3954                                 priv->staging_rxon.flags &=
3955                                         ~RXON_FLG_SHORT_SLOT_MSK;
3956                 }
3957                 /* restore RXON assoc */
3958                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3959                 iwl4965_commit_rxon(priv);
3960                 iwl4965_activate_qos(priv, 1);
3961                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3962         }
3963         iwl4965_send_beacon_cmd(priv);
3964
3965         /* FIXME - we need to add code here to detect a totally new
3966          * configuration, reset the AP, unassoc, rxon timing, assoc,
3967          * clear sta table, add BCAST sta... */
3968 }
3969
3970 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
3971                                         struct ieee80211_vif *vif,
3972                                     struct ieee80211_if_conf *conf)
3973 {
3974         struct iwl_priv *priv = hw->priv;
3975         DECLARE_MAC_BUF(mac);
3976         unsigned long flags;
3977         int rc;
3978
3979         if (conf == NULL)
3980                 return -EIO;
3981
3982         if (priv->vif != vif) {
3983                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
3984                 return 0;
3985         }
3986
3987         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3988             (!conf->beacon || !conf->ssid_len)) {
3989                 IWL_DEBUG_MAC80211
3990                     ("Leaving in AP mode because HostAPD is not ready.\n");
3991                 return 0;
3992         }
3993
3994         if (!iwl_is_alive(priv))
3995                 return -EAGAIN;
3996
3997         mutex_lock(&priv->mutex);
3998
3999         if (conf->bssid)
4000                 IWL_DEBUG_MAC80211("bssid: %s\n",
4001                                    print_mac(mac, conf->bssid));
4002
4003 /*
4004  * very dubious code was here; the probe filtering flag is never set:
4005  *
4006         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4007             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4008  */
4009
4010         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4011                 if (!conf->bssid) {
4012                         conf->bssid = priv->mac_addr;
4013                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4014                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4015                                            print_mac(mac, conf->bssid));
4016                 }
4017                 if (priv->ibss_beacon)
4018                         dev_kfree_skb(priv->ibss_beacon);
4019
4020                 priv->ibss_beacon = conf->beacon;
4021         }
4022
4023         if (iwl_is_rfkill(priv))
4024                 goto done;
4025
4026         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4027             !is_multicast_ether_addr(conf->bssid)) {
4028                 /* If there is currently a HW scan going on in the background
4029                  * then we need to cancel it else the RXON below will fail. */
4030                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4031                         IWL_WARNING("Aborted scan still in progress "
4032                                     "after 100ms\n");
4033                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4034                         mutex_unlock(&priv->mutex);
4035                         return -EAGAIN;
4036                 }
4037                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4038
4039                 /* TODO: Audit driver for usage of these members and see
4040                  * if mac80211 deprecates them (priv->bssid looks like it
4041                  * shouldn't be there, but I haven't scanned the IBSS code
4042                  * to verify) - jpk */
4043                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4044
4045                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4046                         iwl4965_config_ap(priv);
4047                 else {
4048                         rc = iwl4965_commit_rxon(priv);
4049                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4050                                 iwl_rxon_add_station(
4051                                         priv, priv->active_rxon.bssid_addr, 1);
4052                 }
4053
4054         } else {
4055                 iwl4965_scan_cancel_timeout(priv, 100);
4056                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4057                 iwl4965_commit_rxon(priv);
4058         }
4059
4060  done:
4061         spin_lock_irqsave(&priv->lock, flags);
4062         if (!conf->ssid_len)
4063                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4064         else
4065                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4066
4067         priv->essid_len = conf->ssid_len;
4068         spin_unlock_irqrestore(&priv->lock, flags);
4069
4070         IWL_DEBUG_MAC80211("leave\n");
4071         mutex_unlock(&priv->mutex);
4072
4073         return 0;
4074 }
4075
4076 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4077                                  unsigned int changed_flags,
4078                                  unsigned int *total_flags,
4079                                  int mc_count, struct dev_addr_list *mc_list)
4080 {
4081         /*
4082          * XXX: dummy
4083          * see also iwl4965_connection_init_rx_config
4084          */
4085         struct iwl_priv *priv = hw->priv;
4086         int new_flags = 0;
4087         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4088                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4089                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4090                                            IEEE80211_IF_TYPE_MNTR,
4091                                            changed_flags, *total_flags);
4092                         /* queue work 'cuz mac80211 is holding a lock which
4093                          * prevents us from issuing (synchronous) f/w cmds */
4094                         queue_work(priv->workqueue, &priv->set_monitor);
4095                         new_flags &= FIF_PROMISC_IN_BSS |
4096                                      FIF_OTHER_BSS |
4097                                      FIF_ALLMULTI;
4098                 }
4099         }
4100         *total_flags = new_flags;
4101 }
4102
4103 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4104                                      struct ieee80211_if_init_conf *conf)
4105 {
4106         struct iwl_priv *priv = hw->priv;
4107
4108         IWL_DEBUG_MAC80211("enter\n");
4109
4110         mutex_lock(&priv->mutex);
4111
4112         if (iwl_is_ready_rf(priv)) {
4113                 iwl4965_scan_cancel_timeout(priv, 100);
4114                 cancel_delayed_work(&priv->post_associate);
4115                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4116                 iwl4965_commit_rxon(priv);
4117         }
4118         if (priv->vif == conf->vif) {
4119                 priv->vif = NULL;
4120                 memset(priv->bssid, 0, ETH_ALEN);
4121                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4122                 priv->essid_len = 0;
4123         }
4124         mutex_unlock(&priv->mutex);
4125
4126         IWL_DEBUG_MAC80211("leave\n");
4127
4128 }
4129
4130 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4131 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4132                                      struct ieee80211_vif *vif,
4133                                      struct ieee80211_bss_conf *bss_conf,
4134                                      u32 changes)
4135 {
4136         struct iwl_priv *priv = hw->priv;
4137
4138         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4139
4140         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4141                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4142                                    bss_conf->use_short_preamble);
4143                 if (bss_conf->use_short_preamble)
4144                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4145                 else
4146                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4147         }
4148
4149         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4150                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4151                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4152                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4153                 else
4154                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4155         }
4156
4157         if (changes & BSS_CHANGED_HT) {
4158                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4159                 iwl4965_ht_conf(priv, bss_conf);
4160                 iwl_set_rxon_chain(priv);
4161         }
4162
4163         if (changes & BSS_CHANGED_ASSOC) {
4164                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4165                 /* This should never happen as this function should
4166                  * never be called from interrupt context. */
4167                 if (WARN_ON_ONCE(in_interrupt()))
4168                         return;
4169                 if (bss_conf->assoc) {
4170                         priv->assoc_id = bss_conf->aid;
4171                         priv->beacon_int = bss_conf->beacon_int;
4172                         priv->timestamp = bss_conf->timestamp;
4173                         priv->assoc_capability = bss_conf->assoc_capability;
4174                         priv->next_scan_jiffies = jiffies +
4175                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4176                         mutex_lock(&priv->mutex);
4177                         iwl4965_post_associate(priv);
4178                         mutex_unlock(&priv->mutex);
4179                 } else {
4180                         priv->assoc_id = 0;
4181                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4182                 }
4183         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4184                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4185                         iwl_send_rxon_assoc(priv);
4186         }
4187
4188 }
4189
4190 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4191 {
4192         int rc = 0;
4193         unsigned long flags;
4194         struct iwl_priv *priv = hw->priv;
4195
4196         IWL_DEBUG_MAC80211("enter\n");
4197
4198         mutex_lock(&priv->mutex);
4199         spin_lock_irqsave(&priv->lock, flags);
4200
4201         if (!iwl_is_ready_rf(priv)) {
4202                 rc = -EIO;
4203                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4204                 goto out_unlock;
4205         }
4206
4207         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4208                 rc = -EIO;
4209                 IWL_ERROR("ERROR: APs don't scan\n");
4210                 goto out_unlock;
4211         }
4212
4213         /* we don't schedule scan within next_scan_jiffies period */
4214         if (priv->next_scan_jiffies &&
4215                         time_after(priv->next_scan_jiffies, jiffies)) {
4216                 rc = -EAGAIN;
4217                 goto out_unlock;
4218         }
4219         /* if we just finished scan ask for delay */
4220         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4221                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4222                 rc = -EAGAIN;
4223                 goto out_unlock;
4224         }
4225         if (len) {
4226                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4227                                iwl4965_escape_essid(ssid, len), (int)len);
4228
4229                 priv->one_direct_scan = 1;
4230                 priv->direct_ssid_len = (u8)
4231                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4232                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4233         } else
4234                 priv->one_direct_scan = 0;
4235
4236         rc = iwl4965_scan_initiate(priv);
4237
4238         IWL_DEBUG_MAC80211("leave\n");
4239
4240 out_unlock:
4241         spin_unlock_irqrestore(&priv->lock, flags);
4242         mutex_unlock(&priv->mutex);
4243
4244         return rc;
4245 }
4246
4247 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4248                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4249                         u32 iv32, u16 *phase1key)
4250 {
4251         struct iwl_priv *priv = hw->priv;
4252         u8 sta_id = IWL_INVALID_STATION;
4253         unsigned long flags;
4254         __le16 key_flags = 0;
4255         int i;
4256         DECLARE_MAC_BUF(mac);
4257
4258         IWL_DEBUG_MAC80211("enter\n");
4259
4260         sta_id = iwl_find_station(priv, addr);
4261         if (sta_id == IWL_INVALID_STATION) {
4262                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4263                                    print_mac(mac, addr));
4264                 return;
4265         }
4266
4267         iwl4965_scan_cancel_timeout(priv, 100);
4268
4269         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4270         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4271         key_flags &= ~STA_KEY_FLG_INVALID;
4272
4273         if (sta_id == priv->hw_params.bcast_sta_id)
4274                 key_flags |= STA_KEY_MULTICAST_MSK;
4275
4276         spin_lock_irqsave(&priv->sta_lock, flags);
4277
4278         priv->stations[sta_id].sta.key.key_flags = key_flags;
4279         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4280
4281         for (i = 0; i < 5; i++)
4282                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4283                         cpu_to_le16(phase1key[i]);
4284
4285         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4286         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4287
4288         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4289
4290         spin_unlock_irqrestore(&priv->sta_lock, flags);
4291
4292         IWL_DEBUG_MAC80211("leave\n");
4293 }
4294
4295 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4296                            const u8 *local_addr, const u8 *addr,
4297                            struct ieee80211_key_conf *key)
4298 {
4299         struct iwl_priv *priv = hw->priv;
4300         DECLARE_MAC_BUF(mac);
4301         int ret = 0;
4302         u8 sta_id = IWL_INVALID_STATION;
4303         u8 is_default_wep_key = 0;
4304
4305         IWL_DEBUG_MAC80211("enter\n");
4306
4307         if (priv->hw_params.sw_crypto) {
4308                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4309                 return -EOPNOTSUPP;
4310         }
4311
4312         if (is_zero_ether_addr(addr))
4313                 /* only support pairwise keys */
4314                 return -EOPNOTSUPP;
4315
4316         sta_id = iwl_find_station(priv, addr);
4317         if (sta_id == IWL_INVALID_STATION) {
4318                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4319                                    print_mac(mac, addr));
4320                 return -EINVAL;
4321
4322         }
4323
4324         mutex_lock(&priv->mutex);
4325         iwl4965_scan_cancel_timeout(priv, 100);
4326         mutex_unlock(&priv->mutex);
4327
4328         /* If we are getting WEP group key and we didn't receive any key mapping
4329          * so far, we are in legacy wep mode (group key only), otherwise we are
4330          * in 1X mode.
4331          * In legacy wep mode, we use another host command to the uCode */
4332         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4333                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4334                 if (cmd == SET_KEY)
4335                         is_default_wep_key = !priv->key_mapping_key;
4336                 else
4337                         is_default_wep_key =
4338                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4339         }
4340
4341         switch (cmd) {
4342         case SET_KEY:
4343                 if (is_default_wep_key)
4344                         ret = iwl_set_default_wep_key(priv, key);
4345                 else
4346                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4347
4348                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4349                 break;
4350         case DISABLE_KEY:
4351                 if (is_default_wep_key)
4352                         ret = iwl_remove_default_wep_key(priv, key);
4353                 else
4354                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4355
4356                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4357                 break;
4358         default:
4359                 ret = -EINVAL;
4360         }
4361
4362         IWL_DEBUG_MAC80211("leave\n");
4363
4364         return ret;
4365 }
4366
4367 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4368                            const struct ieee80211_tx_queue_params *params)
4369 {
4370         struct iwl_priv *priv = hw->priv;
4371         unsigned long flags;
4372         int q;
4373
4374         IWL_DEBUG_MAC80211("enter\n");
4375
4376         if (!iwl_is_ready_rf(priv)) {
4377                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4378                 return -EIO;
4379         }
4380
4381         if (queue >= AC_NUM) {
4382                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4383                 return 0;
4384         }
4385
4386         if (!priv->qos_data.qos_enable) {
4387                 priv->qos_data.qos_active = 0;
4388                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4389                 return 0;
4390         }
4391         q = AC_NUM - 1 - queue;
4392
4393         spin_lock_irqsave(&priv->lock, flags);
4394
4395         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4396         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4397         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4398         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4399                         cpu_to_le16((params->txop * 32));
4400
4401         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4402         priv->qos_data.qos_active = 1;
4403
4404         spin_unlock_irqrestore(&priv->lock, flags);
4405
4406         mutex_lock(&priv->mutex);
4407         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4408                 iwl4965_activate_qos(priv, 1);
4409         else if (priv->assoc_id && iwl_is_associated(priv))
4410                 iwl4965_activate_qos(priv, 0);
4411
4412         mutex_unlock(&priv->mutex);
4413
4414         IWL_DEBUG_MAC80211("leave\n");
4415         return 0;
4416 }
4417
4418 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4419                                 struct ieee80211_tx_queue_stats *stats)
4420 {
4421         struct iwl_priv *priv = hw->priv;
4422         int i, avail;
4423         struct iwl_tx_queue *txq;
4424         struct iwl_queue *q;
4425         unsigned long flags;
4426
4427         IWL_DEBUG_MAC80211("enter\n");
4428
4429         if (!iwl_is_ready_rf(priv)) {
4430                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4431                 return -EIO;
4432         }
4433
4434         spin_lock_irqsave(&priv->lock, flags);
4435
4436         for (i = 0; i < AC_NUM; i++) {
4437                 txq = &priv->txq[i];
4438                 q = &txq->q;
4439                 avail = iwl_queue_space(q);
4440
4441                 stats[i].len = q->n_window - avail;
4442                 stats[i].limit = q->n_window - q->high_mark;
4443                 stats[i].count = q->n_window;
4444
4445         }
4446         spin_unlock_irqrestore(&priv->lock, flags);
4447
4448         IWL_DEBUG_MAC80211("leave\n");
4449
4450         return 0;
4451 }
4452
4453 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4454                              struct ieee80211_low_level_stats *stats)
4455 {
4456         struct iwl_priv *priv = hw->priv;
4457
4458         priv = hw->priv;
4459         IWL_DEBUG_MAC80211("enter\n");
4460         IWL_DEBUG_MAC80211("leave\n");
4461
4462         return 0;
4463 }
4464
4465 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4466 {
4467         struct iwl_priv *priv;
4468
4469         priv = hw->priv;
4470         IWL_DEBUG_MAC80211("enter\n");
4471         IWL_DEBUG_MAC80211("leave\n");
4472
4473         return 0;
4474 }
4475
4476 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4477 {
4478         struct iwl_priv *priv = hw->priv;
4479         unsigned long flags;
4480
4481         mutex_lock(&priv->mutex);
4482         IWL_DEBUG_MAC80211("enter\n");
4483
4484         priv->lq_mngr.lq_ready = 0;
4485 #ifdef CONFIG_IWL4965_HT
4486         spin_lock_irqsave(&priv->lock, flags);
4487         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4488         spin_unlock_irqrestore(&priv->lock, flags);
4489 #endif /* CONFIG_IWL4965_HT */
4490
4491         iwl_reset_qos(priv);
4492
4493         cancel_delayed_work(&priv->post_associate);
4494
4495         spin_lock_irqsave(&priv->lock, flags);
4496         priv->assoc_id = 0;
4497         priv->assoc_capability = 0;
4498         priv->assoc_station_added = 0;
4499
4500         /* new association get rid of ibss beacon skb */
4501         if (priv->ibss_beacon)
4502                 dev_kfree_skb(priv->ibss_beacon);
4503
4504         priv->ibss_beacon = NULL;
4505
4506         priv->beacon_int = priv->hw->conf.beacon_int;
4507         priv->timestamp = 0;
4508         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4509                 priv->beacon_int = 0;
4510
4511         spin_unlock_irqrestore(&priv->lock, flags);
4512
4513         if (!iwl_is_ready_rf(priv)) {
4514                 IWL_DEBUG_MAC80211("leave - not ready\n");
4515                 mutex_unlock(&priv->mutex);
4516                 return;
4517         }
4518
4519         /* we are restarting association process
4520          * clear RXON_FILTER_ASSOC_MSK bit
4521          */
4522         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4523                 iwl4965_scan_cancel_timeout(priv, 100);
4524                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4525                 iwl4965_commit_rxon(priv);
4526         }
4527
4528         iwl_power_update_mode(priv, 0);
4529
4530         /* Per mac80211.h: This is only used in IBSS mode... */
4531         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4532
4533                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4534                 mutex_unlock(&priv->mutex);
4535                 return;
4536         }
4537
4538         iwl4965_set_rate(priv);
4539
4540         mutex_unlock(&priv->mutex);
4541
4542         IWL_DEBUG_MAC80211("leave\n");
4543 }
4544
4545 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4546 {
4547         struct iwl_priv *priv = hw->priv;
4548         unsigned long flags;
4549
4550         mutex_lock(&priv->mutex);
4551         IWL_DEBUG_MAC80211("enter\n");
4552
4553         if (!iwl_is_ready_rf(priv)) {
4554                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4555                 mutex_unlock(&priv->mutex);
4556                 return -EIO;
4557         }
4558
4559         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4560                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4561                 mutex_unlock(&priv->mutex);
4562                 return -EIO;
4563         }
4564
4565         spin_lock_irqsave(&priv->lock, flags);
4566
4567         if (priv->ibss_beacon)
4568                 dev_kfree_skb(priv->ibss_beacon);
4569
4570         priv->ibss_beacon = skb;
4571
4572         priv->assoc_id = 0;
4573
4574         IWL_DEBUG_MAC80211("leave\n");
4575         spin_unlock_irqrestore(&priv->lock, flags);
4576
4577         iwl_reset_qos(priv);
4578
4579         queue_work(priv->workqueue, &priv->post_associate.work);
4580
4581         mutex_unlock(&priv->mutex);
4582
4583         return 0;
4584 }
4585
4586 /*****************************************************************************
4587  *
4588  * sysfs attributes
4589  *
4590  *****************************************************************************/
4591
4592 #ifdef CONFIG_IWLWIFI_DEBUG
4593
4594 /*
4595  * The following adds a new attribute to the sysfs representation
4596  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4597  * used for controlling the debug level.
4598  *
4599  * See the level definitions in iwl for details.
4600  */
4601
4602 static ssize_t show_debug_level(struct device *d,
4603                                 struct device_attribute *attr, char *buf)
4604 {
4605         struct iwl_priv *priv = d->driver_data;
4606
4607         return sprintf(buf, "0x%08X\n", priv->debug_level);
4608 }
4609 static ssize_t store_debug_level(struct device *d,
4610                                 struct device_attribute *attr,
4611                                  const char *buf, size_t count)
4612 {
4613         struct iwl_priv *priv = d->driver_data;
4614         char *p = (char *)buf;
4615         u32 val;
4616
4617         val = simple_strtoul(p, &p, 0);
4618         if (p == buf)
4619                 printk(KERN_INFO DRV_NAME
4620                        ": %s is not in hex or decimal form.\n", buf);
4621         else
4622                 priv->debug_level = val;
4623
4624         return strnlen(buf, count);
4625 }
4626
4627 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4628                         show_debug_level, store_debug_level);
4629
4630
4631 #endif /* CONFIG_IWLWIFI_DEBUG */
4632
4633
4634 static ssize_t show_version(struct device *d,
4635                                 struct device_attribute *attr, char *buf)
4636 {
4637         struct iwl_priv *priv = d->driver_data;
4638         struct iwl_alive_resp *palive = &priv->card_alive;
4639
4640         if (palive->is_valid)
4641                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4642                                     "fw type: 0x%01X 0x%01X\n",
4643                                 palive->ucode_major, palive->ucode_minor,
4644                                 palive->sw_rev[0], palive->sw_rev[1],
4645                                 palive->ver_type, palive->ver_subtype);
4646
4647         else
4648                 return sprintf(buf, "fw not loaded\n");
4649 }
4650
4651 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4652
4653 static ssize_t show_temperature(struct device *d,
4654                                 struct device_attribute *attr, char *buf)
4655 {
4656         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4657
4658         if (!iwl_is_alive(priv))
4659                 return -EAGAIN;
4660
4661         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
4662 }
4663
4664 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4665
4666 static ssize_t show_rs_window(struct device *d,
4667                               struct device_attribute *attr,
4668                               char *buf)
4669 {
4670         struct iwl_priv *priv = d->driver_data;
4671         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
4672 }
4673 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4674
4675 static ssize_t show_tx_power(struct device *d,
4676                              struct device_attribute *attr, char *buf)
4677 {
4678         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4679         return sprintf(buf, "%d\n", priv->user_txpower_limit);
4680 }
4681
4682 static ssize_t store_tx_power(struct device *d,
4683                               struct device_attribute *attr,
4684                               const char *buf, size_t count)
4685 {
4686         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4687         char *p = (char *)buf;
4688         u32 val;
4689
4690         val = simple_strtoul(p, &p, 10);
4691         if (p == buf)
4692                 printk(KERN_INFO DRV_NAME
4693                        ": %s is not in decimal form.\n", buf);
4694         else
4695                 iwl4965_hw_reg_set_txpower(priv, val);
4696
4697         return count;
4698 }
4699
4700 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4701
4702 static ssize_t show_flags(struct device *d,
4703                           struct device_attribute *attr, char *buf)
4704 {
4705         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4706
4707         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4708 }
4709
4710 static ssize_t store_flags(struct device *d,
4711                            struct device_attribute *attr,
4712                            const char *buf, size_t count)
4713 {
4714         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4715         u32 flags = simple_strtoul(buf, NULL, 0);
4716
4717         mutex_lock(&priv->mutex);
4718         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4719                 /* Cancel any currently running scans... */
4720                 if (iwl4965_scan_cancel_timeout(priv, 100))
4721                         IWL_WARNING("Could not cancel scan.\n");
4722                 else {
4723                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4724                                        flags);
4725                         priv->staging_rxon.flags = cpu_to_le32(flags);
4726                         iwl4965_commit_rxon(priv);
4727                 }
4728         }
4729         mutex_unlock(&priv->mutex);
4730
4731         return count;
4732 }
4733
4734 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4735
4736 static ssize_t show_filter_flags(struct device *d,
4737                                  struct device_attribute *attr, char *buf)
4738 {
4739         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4740
4741         return sprintf(buf, "0x%04X\n",
4742                 le32_to_cpu(priv->active_rxon.filter_flags));
4743 }
4744
4745 static ssize_t store_filter_flags(struct device *d,
4746                                   struct device_attribute *attr,
4747                                   const char *buf, size_t count)
4748 {
4749         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4750         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4751
4752         mutex_lock(&priv->mutex);
4753         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4754                 /* Cancel any currently running scans... */
4755                 if (iwl4965_scan_cancel_timeout(priv, 100))
4756                         IWL_WARNING("Could not cancel scan.\n");
4757                 else {
4758                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4759                                        "0x%04X\n", filter_flags);
4760                         priv->staging_rxon.filter_flags =
4761                                 cpu_to_le32(filter_flags);
4762                         iwl4965_commit_rxon(priv);
4763                 }
4764         }
4765         mutex_unlock(&priv->mutex);
4766
4767         return count;
4768 }
4769
4770 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4771                    store_filter_flags);
4772
4773 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4774
4775 static ssize_t show_measurement(struct device *d,
4776                                 struct device_attribute *attr, char *buf)
4777 {
4778         struct iwl_priv *priv = dev_get_drvdata(d);
4779         struct iwl4965_spectrum_notification measure_report;
4780         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4781         u8 *data = (u8 *) & measure_report;
4782         unsigned long flags;
4783
4784         spin_lock_irqsave(&priv->lock, flags);
4785         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4786                 spin_unlock_irqrestore(&priv->lock, flags);
4787                 return 0;
4788         }
4789         memcpy(&measure_report, &priv->measure_report, size);
4790         priv->measurement_status = 0;
4791         spin_unlock_irqrestore(&priv->lock, flags);
4792
4793         while (size && (PAGE_SIZE - len)) {
4794                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4795                                    PAGE_SIZE - len, 1);
4796                 len = strlen(buf);
4797                 if (PAGE_SIZE - len)
4798                         buf[len++] = '\n';
4799
4800                 ofs += 16;
4801                 size -= min(size, 16U);
4802         }
4803
4804         return len;
4805 }
4806
4807 static ssize_t store_measurement(struct device *d,
4808                                  struct device_attribute *attr,
4809                                  const char *buf, size_t count)
4810 {
4811         struct iwl_priv *priv = dev_get_drvdata(d);
4812         struct ieee80211_measurement_params params = {
4813                 .channel = le16_to_cpu(priv->active_rxon.channel),
4814                 .start_time = cpu_to_le64(priv->last_tsf),
4815                 .duration = cpu_to_le16(1),
4816         };
4817         u8 type = IWL_MEASURE_BASIC;
4818         u8 buffer[32];
4819         u8 channel;
4820
4821         if (count) {
4822                 char *p = buffer;
4823                 strncpy(buffer, buf, min(sizeof(buffer), count));
4824                 channel = simple_strtoul(p, NULL, 0);
4825                 if (channel)
4826                         params.channel = channel;
4827
4828                 p = buffer;
4829                 while (*p && *p != ' ')
4830                         p++;
4831                 if (*p)
4832                         type = simple_strtoul(p + 1, NULL, 0);
4833         }
4834
4835         IWL_DEBUG_INFO("Invoking measurement of type %d on "
4836                        "channel %d (for '%s')\n", type, params.channel, buf);
4837         iwl4965_get_measurement(priv, &params, type);
4838
4839         return count;
4840 }
4841
4842 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4843                    show_measurement, store_measurement);
4844 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4845
4846 static ssize_t store_retry_rate(struct device *d,
4847                                 struct device_attribute *attr,
4848                                 const char *buf, size_t count)
4849 {
4850         struct iwl_priv *priv = dev_get_drvdata(d);
4851
4852         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4853         if (priv->retry_rate <= 0)
4854                 priv->retry_rate = 1;
4855
4856         return count;
4857 }
4858
4859 static ssize_t show_retry_rate(struct device *d,
4860                                struct device_attribute *attr, char *buf)
4861 {
4862         struct iwl_priv *priv = dev_get_drvdata(d);
4863         return sprintf(buf, "%d", priv->retry_rate);
4864 }
4865
4866 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4867                    store_retry_rate);
4868
4869 static ssize_t store_power_level(struct device *d,
4870                                  struct device_attribute *attr,
4871                                  const char *buf, size_t count)
4872 {
4873         struct iwl_priv *priv = dev_get_drvdata(d);
4874         int rc;
4875         int mode;
4876
4877         mode = simple_strtoul(buf, NULL, 0);
4878         mutex_lock(&priv->mutex);
4879
4880         if (!iwl_is_ready(priv)) {
4881                 rc = -EAGAIN;
4882                 goto out;
4883         }
4884
4885         rc = iwl_power_set_user_mode(priv, mode);
4886         if (rc) {
4887                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4888                 goto out;
4889         }
4890         rc = count;
4891
4892  out:
4893         mutex_unlock(&priv->mutex);
4894         return rc;
4895 }
4896
4897 #define MAX_WX_STRING 80
4898
4899 /* Values are in microsecond */
4900 static const s32 timeout_duration[] = {
4901         350000,
4902         250000,
4903         75000,
4904         37000,
4905         25000,
4906 };
4907 static const s32 period_duration[] = {
4908         400000,
4909         700000,
4910         1000000,
4911         1000000,
4912         1000000
4913 };
4914
4915 static ssize_t show_power_level(struct device *d,
4916                                 struct device_attribute *attr, char *buf)
4917 {
4918         struct iwl_priv *priv = dev_get_drvdata(d);
4919         int level = priv->power_data.power_mode;
4920         char *p = buf;
4921
4922         p += sprintf(p, "%d ", level);
4923         switch (level) {
4924         case IWL_POWER_MODE_CAM:
4925         case IWL_POWER_AC:
4926                 p += sprintf(p, "(AC)");
4927                 break;
4928         case IWL_POWER_BATTERY:
4929                 p += sprintf(p, "(BATTERY)");
4930                 break;
4931         default:
4932                 p += sprintf(p,
4933                              "(Timeout %dms, Period %dms)",
4934                              timeout_duration[level - 1] / 1000,
4935                              period_duration[level - 1] / 1000);
4936         }
4937 /*
4938         if (!(priv->power_mode & IWL_POWER_ENABLED))
4939                 p += sprintf(p, " OFF\n");
4940         else
4941                 p += sprintf(p, " \n");
4942 */
4943         p += sprintf(p, " \n");
4944         return (p - buf + 1);
4945 }
4946
4947 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4948                    store_power_level);
4949
4950 static ssize_t show_channels(struct device *d,
4951                              struct device_attribute *attr, char *buf)
4952 {
4953         /* all this shit doesn't belong into sysfs anyway */
4954         return 0;
4955 }
4956
4957 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4958
4959 static ssize_t show_statistics(struct device *d,
4960                                struct device_attribute *attr, char *buf)
4961 {
4962         struct iwl_priv *priv = dev_get_drvdata(d);
4963         u32 size = sizeof(struct iwl4965_notif_statistics);
4964         u32 len = 0, ofs = 0;
4965         u8 *data = (u8 *) & priv->statistics;
4966         int rc = 0;
4967
4968         if (!iwl_is_alive(priv))
4969                 return -EAGAIN;
4970
4971         mutex_lock(&priv->mutex);
4972         rc = iwl_send_statistics_request(priv, 0);
4973         mutex_unlock(&priv->mutex);
4974
4975         if (rc) {
4976                 len = sprintf(buf,
4977                               "Error sending statistics request: 0x%08X\n", rc);
4978                 return len;
4979         }
4980
4981         while (size && (PAGE_SIZE - len)) {
4982                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4983                                    PAGE_SIZE - len, 1);
4984                 len = strlen(buf);
4985                 if (PAGE_SIZE - len)
4986                         buf[len++] = '\n';
4987
4988                 ofs += 16;
4989                 size -= min(size, 16U);
4990         }
4991
4992         return len;
4993 }
4994
4995 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4996
4997 static ssize_t show_status(struct device *d,
4998                            struct device_attribute *attr, char *buf)
4999 {
5000         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5001         if (!iwl_is_alive(priv))
5002                 return -EAGAIN;
5003         return sprintf(buf, "0x%08x\n", (int)priv->status);
5004 }
5005
5006 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5007
5008 /*****************************************************************************
5009  *
5010  * driver setup and teardown
5011  *
5012  *****************************************************************************/
5013
5014 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5015 {
5016         priv->workqueue = create_workqueue(DRV_NAME);
5017
5018         init_waitqueue_head(&priv->wait_command_queue);
5019
5020         INIT_WORK(&priv->up, iwl4965_bg_up);
5021         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5022         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5023         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5024         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5025         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5026         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5027         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5028         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5029         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5030         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5031         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5032         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5033
5034         iwl4965_hw_setup_deferred_work(priv);
5035
5036         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5037                      iwl4965_irq_tasklet, (unsigned long)priv);
5038 }
5039
5040 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5041 {
5042         iwl4965_hw_cancel_deferred_work(priv);
5043
5044         cancel_delayed_work_sync(&priv->init_alive_start);
5045         cancel_delayed_work(&priv->scan_check);
5046         cancel_delayed_work(&priv->alive_start);
5047         cancel_delayed_work(&priv->post_associate);
5048         cancel_work_sync(&priv->beacon_update);
5049 }
5050
5051 static struct attribute *iwl4965_sysfs_entries[] = {
5052         &dev_attr_channels.attr,
5053         &dev_attr_flags.attr,
5054         &dev_attr_filter_flags.attr,
5055 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5056         &dev_attr_measurement.attr,
5057 #endif
5058         &dev_attr_power_level.attr,
5059         &dev_attr_retry_rate.attr,
5060         &dev_attr_rs_window.attr,
5061         &dev_attr_statistics.attr,
5062         &dev_attr_status.attr,
5063         &dev_attr_temperature.attr,
5064         &dev_attr_tx_power.attr,
5065 #ifdef CONFIG_IWLWIFI_DEBUG
5066         &dev_attr_debug_level.attr,
5067 #endif
5068         &dev_attr_version.attr,
5069
5070         NULL
5071 };
5072
5073 static struct attribute_group iwl4965_attribute_group = {
5074         .name = NULL,           /* put in device directory */
5075         .attrs = iwl4965_sysfs_entries,
5076 };
5077
5078 static struct ieee80211_ops iwl4965_hw_ops = {
5079         .tx = iwl4965_mac_tx,
5080         .start = iwl4965_mac_start,
5081         .stop = iwl4965_mac_stop,
5082         .add_interface = iwl4965_mac_add_interface,
5083         .remove_interface = iwl4965_mac_remove_interface,
5084         .config = iwl4965_mac_config,
5085         .config_interface = iwl4965_mac_config_interface,
5086         .configure_filter = iwl4965_configure_filter,
5087         .set_key = iwl4965_mac_set_key,
5088         .update_tkip_key = iwl4965_mac_update_tkip_key,
5089         .get_stats = iwl4965_mac_get_stats,
5090         .get_tx_stats = iwl4965_mac_get_tx_stats,
5091         .conf_tx = iwl4965_mac_conf_tx,
5092         .get_tsf = iwl4965_mac_get_tsf,
5093         .reset_tsf = iwl4965_mac_reset_tsf,
5094         .beacon_update = iwl4965_mac_beacon_update,
5095         .bss_info_changed = iwl4965_bss_info_changed,
5096 #ifdef CONFIG_IWL4965_HT
5097         .ampdu_action = iwl4965_mac_ampdu_action,
5098 #endif  /* CONFIG_IWL4965_HT */
5099         .hw_scan = iwl4965_mac_hw_scan
5100 };
5101
5102 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5103 {
5104         int err = 0;
5105         struct iwl_priv *priv;
5106         struct ieee80211_hw *hw;
5107         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5108         unsigned long flags;
5109         DECLARE_MAC_BUF(mac);
5110
5111         /************************
5112          * 1. Allocating HW data
5113          ************************/
5114
5115         /* Disabling hardware scan means that mac80211 will perform scans
5116          * "the hard way", rather than using device's scan. */
5117         if (cfg->mod_params->disable_hw_scan) {
5118                 if (cfg->mod_params->debug & IWL_DL_INFO)
5119                         dev_printk(KERN_DEBUG, &(pdev->dev),
5120                                    "Disabling hw_scan\n");
5121                 iwl4965_hw_ops.hw_scan = NULL;
5122         }
5123
5124         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5125         if (!hw) {
5126                 err = -ENOMEM;
5127                 goto out;
5128         }
5129         priv = hw->priv;
5130         /* At this point both hw and priv are allocated. */
5131
5132         SET_IEEE80211_DEV(hw, &pdev->dev);
5133
5134         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5135         priv->cfg = cfg;
5136         priv->pci_dev = pdev;
5137
5138 #ifdef CONFIG_IWLWIFI_DEBUG
5139         priv->debug_level = priv->cfg->mod_params->debug;
5140         atomic_set(&priv->restrict_refcnt, 0);
5141 #endif
5142
5143         /**************************
5144          * 2. Initializing PCI bus
5145          **************************/
5146         if (pci_enable_device(pdev)) {
5147                 err = -ENODEV;
5148                 goto out_ieee80211_free_hw;
5149         }
5150
5151         pci_set_master(pdev);
5152
5153         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5154         if (!err)
5155                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5156         if (err) {
5157                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5158                 if (!err)
5159                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5160                 /* both attempts failed: */
5161                 if (err) {
5162                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5163                                 DRV_NAME);
5164                         goto out_pci_disable_device;
5165                 }
5166         }
5167
5168         err = pci_request_regions(pdev, DRV_NAME);
5169         if (err)
5170                 goto out_pci_disable_device;
5171
5172         pci_set_drvdata(pdev, priv);
5173
5174         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5175          * PCI Tx retries from interfering with C3 CPU state */
5176         pci_write_config_byte(pdev, 0x41, 0x00);
5177
5178         /***********************
5179          * 3. Read REV register
5180          ***********************/
5181         priv->hw_base = pci_iomap(pdev, 0, 0);
5182         if (!priv->hw_base) {
5183                 err = -ENODEV;
5184                 goto out_pci_release_regions;
5185         }
5186
5187         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5188                 (unsigned long long) pci_resource_len(pdev, 0));
5189         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5190
5191         iwl_hw_detect(priv);
5192         printk(KERN_INFO DRV_NAME
5193                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5194                 priv->cfg->name, priv->hw_rev);
5195
5196         /* amp init */
5197         err = priv->cfg->ops->lib->apm_ops.init(priv);
5198         if (err < 0) {
5199                 IWL_DEBUG_INFO("Failed to init APMG\n");
5200                 goto out_iounmap;
5201         }
5202         /*****************
5203          * 4. Read EEPROM
5204          *****************/
5205         /* Read the EEPROM */
5206         err = iwl_eeprom_init(priv);
5207         if (err) {
5208                 IWL_ERROR("Unable to init EEPROM\n");
5209                 goto out_iounmap;
5210         }
5211         err = iwl_eeprom_check_version(priv);
5212         if (err)
5213                 goto out_iounmap;
5214
5215         /* extract MAC Address */
5216         iwl_eeprom_get_mac(priv, priv->mac_addr);
5217         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5218         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5219
5220         /************************
5221          * 5. Setup HW constants
5222          ************************/
5223         /* Device-specific setup */
5224         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5225                 IWL_ERROR("failed to set hw parameters\n");
5226                 goto out_free_eeprom;
5227         }
5228
5229         /*******************
5230          * 6. Setup priv
5231          *******************/
5232
5233         err = iwl_init_drv(priv);
5234         if (err)
5235                 goto out_free_eeprom;
5236         /* At this point both hw and priv are initialized. */
5237
5238         /**********************************
5239          * 7. Initialize module parameters
5240          **********************************/
5241
5242         /* Disable radio (SW RF KILL) via parameter when loading driver */
5243         if (priv->cfg->mod_params->disable) {
5244                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5245                 IWL_DEBUG_INFO("Radio disabled.\n");
5246         }
5247
5248         /********************
5249          * 8. Setup services
5250          ********************/
5251         spin_lock_irqsave(&priv->lock, flags);
5252         iwl4965_disable_interrupts(priv);
5253         spin_unlock_irqrestore(&priv->lock, flags);
5254
5255         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5256         if (err) {
5257                 IWL_ERROR("failed to create sysfs device attributes\n");
5258                 goto out_uninit_drv;
5259         }
5260
5261
5262         iwl4965_setup_deferred_work(priv);
5263         iwl4965_setup_rx_handlers(priv);
5264
5265         /********************
5266          * 9. Conclude
5267          ********************/
5268         pci_save_state(pdev);
5269         pci_disable_device(pdev);
5270
5271         /**********************************
5272          * 10. Setup and register mac80211
5273          **********************************/
5274
5275         err = iwl_setup_mac(priv);
5276         if (err)
5277                 goto out_remove_sysfs;
5278
5279         err = iwl_dbgfs_register(priv, DRV_NAME);
5280         if (err)
5281                 IWL_ERROR("failed to create debugfs files\n");
5282
5283         /* notify iwlcore to init */
5284         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5285         return 0;
5286
5287  out_remove_sysfs:
5288         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5289  out_uninit_drv:
5290         iwl_uninit_drv(priv);
5291  out_free_eeprom:
5292         iwl_eeprom_free(priv);
5293  out_iounmap:
5294         pci_iounmap(pdev, priv->hw_base);
5295  out_pci_release_regions:
5296         pci_release_regions(pdev);
5297         pci_set_drvdata(pdev, NULL);
5298  out_pci_disable_device:
5299         pci_disable_device(pdev);
5300  out_ieee80211_free_hw:
5301         ieee80211_free_hw(priv->hw);
5302  out:
5303         return err;
5304 }
5305
5306 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5307 {
5308         struct iwl_priv *priv = pci_get_drvdata(pdev);
5309         struct list_head *p, *q;
5310         int i;
5311         unsigned long flags;
5312
5313         if (!priv)
5314                 return;
5315
5316         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5317
5318         if (priv->mac80211_registered) {
5319                 ieee80211_unregister_hw(priv->hw);
5320                 priv->mac80211_registered = 0;
5321         }
5322
5323         set_bit(STATUS_EXIT_PENDING, &priv->status);
5324
5325         iwl4965_down(priv);
5326
5327         /* make sure we flush any pending irq or
5328          * tasklet for the driver
5329          */
5330         spin_lock_irqsave(&priv->lock, flags);
5331         iwl4965_disable_interrupts(priv);
5332         spin_unlock_irqrestore(&priv->lock, flags);
5333
5334         iwl_synchronize_irq(priv);
5335
5336         /* Free MAC hash list for ADHOC */
5337         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5338                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5339                         list_del(p);
5340                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5341                 }
5342         }
5343
5344         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5345         iwl_dbgfs_unregister(priv);
5346         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5347
5348         iwl4965_dealloc_ucode_pci(priv);
5349
5350         if (priv->rxq.bd)
5351                 iwl_rx_queue_free(priv, &priv->rxq);
5352         iwl_hw_txq_ctx_free(priv);
5353
5354         iwlcore_clear_stations_table(priv);
5355         iwl_eeprom_free(priv);
5356
5357
5358         /*netif_stop_queue(dev); */
5359         flush_workqueue(priv->workqueue);
5360
5361         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5362          * priv->workqueue... so we can't take down the workqueue
5363          * until now... */
5364         destroy_workqueue(priv->workqueue);
5365         priv->workqueue = NULL;
5366
5367         pci_iounmap(pdev, priv->hw_base);
5368         pci_release_regions(pdev);
5369         pci_disable_device(pdev);
5370         pci_set_drvdata(pdev, NULL);
5371
5372         iwl_uninit_drv(priv);
5373
5374         if (priv->ibss_beacon)
5375                 dev_kfree_skb(priv->ibss_beacon);
5376
5377         ieee80211_free_hw(priv->hw);
5378 }
5379
5380 #ifdef CONFIG_PM
5381
5382 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5383 {
5384         struct iwl_priv *priv = pci_get_drvdata(pdev);
5385
5386         if (priv->is_open) {
5387                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5388                 iwl4965_mac_stop(priv->hw);
5389                 priv->is_open = 1;
5390         }
5391
5392         pci_set_power_state(pdev, PCI_D3hot);
5393
5394         return 0;
5395 }
5396
5397 static int iwl4965_pci_resume(struct pci_dev *pdev)
5398 {
5399         struct iwl_priv *priv = pci_get_drvdata(pdev);
5400
5401         pci_set_power_state(pdev, PCI_D0);
5402
5403         if (priv->is_open)
5404                 iwl4965_mac_start(priv->hw);
5405
5406         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5407         return 0;
5408 }
5409
5410 #endif /* CONFIG_PM */
5411
5412 /*****************************************************************************
5413  *
5414  * driver and module entry point
5415  *
5416  *****************************************************************************/
5417
5418 /* Hardware specific file defines the PCI IDs table for that hardware module */
5419 static struct pci_device_id iwl_hw_card_ids[] = {
5420         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5421         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5422 #ifdef CONFIG_IWL5000
5423         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5424         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5425         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5426 #endif /* CONFIG_IWL5000 */
5427         {0}
5428 };
5429 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5430
5431 static struct pci_driver iwl_driver = {
5432         .name = DRV_NAME,
5433         .id_table = iwl_hw_card_ids,
5434         .probe = iwl4965_pci_probe,
5435         .remove = __devexit_p(iwl4965_pci_remove),
5436 #ifdef CONFIG_PM
5437         .suspend = iwl4965_pci_suspend,
5438         .resume = iwl4965_pci_resume,
5439 #endif
5440 };
5441
5442 static int __init iwl4965_init(void)
5443 {
5444
5445         int ret;
5446         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5447         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5448
5449         ret = iwl4965_rate_control_register();
5450         if (ret) {
5451                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5452                 return ret;
5453         }
5454
5455         ret = pci_register_driver(&iwl_driver);
5456         if (ret) {
5457                 IWL_ERROR("Unable to initialize PCI module\n");
5458                 goto error_register;
5459         }
5460
5461         return ret;
5462
5463 error_register:
5464         iwl4965_rate_control_unregister();
5465         return ret;
5466 }
5467
5468 static void __exit iwl4965_exit(void)
5469 {
5470         pci_unregister_driver(&iwl_driver);
5471         iwl4965_rate_control_unregister();
5472 }
5473
5474 module_exit(iwl4965_exit);
5475 module_init(iwl4965_init);