drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  90 static const struct ieee80211_supported_band *iwl_get_hw_mode(
  91                 struct iwl_priv *priv, enum ieee80211_band band)
  92 {
  93         return priv->hw->wiphy->bands[band];
  94 }
  95
  96 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
  97 {
  98         /* Single white space is for Linksys APs */
  99         if (essid_len == 1 && essid[0] == ' ')
 100                 return 1;
 101
 102         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 103         while (essid_len) {
 104                 essid_len--;
 105                 if (essid[essid_len] != '\0')
 106                         return 0;
 107         }
 108
 109         return 1;
 110 }
 111
 112 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 113 {
 114         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 115         const char *s = essid;
 116         char *d = escaped;
 117
 118         if (iwl4965_is_empty_essid(essid, essid_len)) {
 119                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 120                 return escaped;
 121         }
 122
 123         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 124         while (essid_len--) {
 125                 if (*s == '\0') {
 126                         *d++ = '\\';
 127                         *d++ = '0';
 128                         s++;
 129                 } else
 130                         *d++ = *s++;
 131         }
 132         *d = '\0';
 133         return escaped;
 134 }
 135
 136 /*************** STATION TABLE MANAGEMENT ****
 137  * mac80211 should be examined to determine if sta_info is duplicating
 138  * the functionality provided here
 139  */
 140
 141 /**************************************************************/
 142
 143
 144
 145 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 146 {
 147         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 148
 149         if (hw_decrypt)
 150                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 151         else
 152                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 153
 154 }
 155
 156 /**
 157  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 158  *
 159  * NOTE:  This is really only useful during development and can eventually
 160  * be #ifdef'd out once the driver is stable and folks aren't actively
 161  * making changes
 162  */
 163 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 164 {
 165         int error = 0;
 166         int counter = 1;
 167
 168         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 169                 error |= le32_to_cpu(rxon->flags &
 170                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 171                                  RXON_FLG_RADAR_DETECT_MSK));
 172                 if (error)
 173                         IWL_WARNING("check 24G fields %d | %d\n",
 174                                     counter++, error);
 175         } else {
 176                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 177                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 178                 if (error)
 179                         IWL_WARNING("check 52 fields %d | %d\n",
 180                                     counter++, error);
 181                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 182                 if (error)
 183                         IWL_WARNING("check 52 CCK %d | %d\n",
 184                                     counter++, error);
 185         }
 186         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 187         if (error)
 188                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 189
 190         /* make sure basic rates 6Mbps and 1Mbps are supported */
 191         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 192                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 193         if (error)
 194                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 195
 196         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 197         if (error)
 198                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 199
 200         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 201                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 202         if (error)
 203                 IWL_WARNING("check CCK and short slot %d | %d\n",
 204                             counter++, error);
 205
 206         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 207                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 208         if (error)
 209                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 210                             counter++, error);
 211
 212         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 213                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 214         if (error)
 215                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 216                             counter++, error);
 217
 218         if (error)
 219                 IWL_WARNING("Tuning to channel %d\n",
 220                             le16_to_cpu(rxon->channel));
 221
 222         if (error) {
 223                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 224                 return -1;
 225         }
 226         return 0;
 227 }
 228
 229 /**
 230  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 231  * @priv: staging_rxon is compared to active_rxon
 232  *
 233  * If the RXON structure is changing enough to require a new tune,
 234  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 235  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 236  */
 237 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 238 {
 239
 240         /* These items are only settable from the full RXON command */
 241         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 242             compare_ether_addr(priv->staging_rxon.bssid_addr,
 243                                priv->active_rxon.bssid_addr) ||
 244             compare_ether_addr(priv->staging_rxon.node_addr,
 245                                priv->active_rxon.node_addr) ||
 246             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 247                                priv->active_rxon.wlap_bssid_addr) ||
 248             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 249             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 250             (priv->staging_rxon.air_propagation !=
 251              priv->active_rxon.air_propagation) ||
 252             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 253              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 254             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 255              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 256             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 257             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 258                 return 1;
 259
 260         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 261          * be updated with the RXON_ASSOC command -- however only some
 262          * flag transitions are allowed using RXON_ASSOC */
 263
 264         /* Check if we are not switching bands */
 265         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 266             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 267                 return 1;
 268
 269         /* Check if we are switching association toggle */
 270         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 271                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 272                 return 1;
 273
 274         return 0;
 275 }
 276
 277 /**
 278  * iwl4965_commit_rxon - commit staging_rxon to hardware
 279  *
 280  * The RXON command in staging_rxon is committed to the hardware and
 281  * the active_rxon structure is updated with the new data.  This
 282  * function correctly transitions out of the RXON_ASSOC_MSK state if
 283  * a HW tune is required based on the RXON structure changes.
 284  */
 285 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 286 {
 287         /* cast away the const for active_rxon in this function */
 288         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 289         DECLARE_MAC_BUF(mac);
 290         int rc = 0;
 291
 292         if (!iwl_is_alive(priv))
 293                 return -1;
 294
 295         /* always get timestamp with Rx frame */
 296         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 297
 298         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 299         if (rc) {
 300                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 301                 return -EINVAL;
 302         }
 303
 304         /* If we don't need to send a full RXON, we can use
 305          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 306          * and other flags for the current radio configuration. */
 307         if (!iwl4965_full_rxon_required(priv)) {
 308                 rc = iwl_send_rxon_assoc(priv);
 309                 if (rc) {
 310                         IWL_ERROR("Error setting RXON_ASSOC "
 311                                   "configuration (%d).\n", rc);
 312                         return rc;
 313                 }
 314
 315                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 316
 317                 return 0;
 318         }
 319
 320         /* station table will be cleared */
 321         priv->assoc_station_added = 0;
 322
 323         /* If we are currently associated and the new config requires
 324          * an RXON_ASSOC and the new config wants the associated mask enabled,
 325          * we must clear the associated from the active configuration
 326          * before we apply the new config */
 327         if (iwl_is_associated(priv) &&
 328             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 329                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 330                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 331
 332                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 333                                       sizeof(struct iwl_rxon_cmd),
 334                                       &priv->active_rxon);
 335
 336                 /* If the mask clearing failed then we set
 337                  * active_rxon back to what it was previously */
 338                 if (rc) {
 339                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 340                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 341                                   "configuration (%d).\n", rc);
 342                         return rc;
 343                 }
 344         }
 345
 346         IWL_DEBUG_INFO("Sending RXON\n"
 347                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 348                        "* channel = %d\n"
 349                        "* bssid = %s\n",
 350                        ((priv->staging_rxon.filter_flags &
 351                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 352                        le16_to_cpu(priv->staging_rxon.channel),
 353                        print_mac(mac, priv->staging_rxon.bssid_addr));
 354
 355         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 356         /* Apply the new configuration */
 357         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 358                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 359         if (rc) {
 360                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 361                 return rc;
 362         }
 363
 364         iwl_remove_station(priv, iwl_bcast_addr, 0);
 365         iwlcore_clear_stations_table(priv);
 366
 367         if (!priv->error_recovering)
 368                 priv->start_calib = 0;
 369
 370         iwl_init_sensitivity(priv);
 371
 372         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 373
 374         /* If we issue a new RXON command which required a tune then we must
 375          * send a new TXPOWER command or we won't be able to Tx any frames */
 376         rc = iwl4965_hw_reg_send_txpower(priv);
 377         if (rc) {
 378                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 379                 return rc;
 380         }
 381
 382         /* Add the broadcast address so we can send broadcast frames */
 383         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 384             IWL_INVALID_STATION) {
 385                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 386                 return -EIO;
 387         }
 388
 389         /* If we have set the ASSOC_MSK and we are in BSS mode then
 390          * add the IWL_AP_ID to the station rate table */
 391         if (iwl_is_associated(priv) &&
 392             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 393                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 394                     == IWL_INVALID_STATION) {
 395                         IWL_ERROR("Error adding AP address for transmit.\n");
 396                         return -EIO;
 397                 }
 398                 priv->assoc_station_added = 1;
 399                 if (priv->default_wep_key &&
 400                     iwl_send_static_wepkey_cmd(priv, 0))
 401                         IWL_ERROR("Could not send WEP static key.\n");
 402         }
 403
 404         return 0;
 405 }
 406
 407 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 408 {
 409
 410         iwl_set_rxon_chain(priv);
 411         iwl4965_commit_rxon(priv);
 412 }
 413
 414 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 415 {
 416         struct iwl4965_bt_cmd bt_cmd = {
 417                 .flags = 3,
 418                 .lead_time = 0xAA,
 419                 .max_kill = 1,
 420                 .kill_ack_mask = 0,
 421                 .kill_cts_mask = 0,
 422         };
 423
 424         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 425                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 426 }
 427
 428 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 429 {
 430         int ret = 0;
 431         struct iwl_rx_packet *res;
 432         struct iwl_host_cmd cmd = {
 433                 .id = REPLY_SCAN_ABORT_CMD,
 434                 .meta.flags = CMD_WANT_SKB,
 435         };
 436
 437         /* If there isn't a scan actively going on in the hardware
 438          * then we are in between scan bands and not actually
 439          * actively scanning, so don't send the abort command */
 440         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 441                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 442                 return 0;
 443         }
 444
 445         ret = iwl_send_cmd_sync(priv, &cmd);
 446         if (ret) {
 447                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 448                 return ret;
 449         }
 450
 451         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 452         if (res->u.status != CAN_ABORT_STATUS) {
 453                 /* The scan abort will return 1 for success or
 454                  * 2 for "failure".  A failure condition can be
 455                  * due to simply not being in an active scan which
 456                  * can occur if we send the scan abort before we
 457                  * the microcode has notified us that a scan is
 458                  * completed. */
 459                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 460                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 461                 clear_bit(STATUS_SCAN_HW, &priv->status);
 462         }
 463
 464         dev_kfree_skb_any(cmd.meta.u.skb);
 465
 466         return ret;
 467 }
 468
 469 /*
 470  * CARD_STATE_CMD
 471  *
 472  * Use: Sets the device's internal card state to enable, disable, or halt
 473  *
 474  * When in the 'enable' state the card operates as normal.
 475  * When in the 'disable' state, the card enters into a low power mode.
 476  * When in the 'halt' state, the card is shut down and must be fully
 477  * restarted to come back on.
 478  */
 479 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
 480 {
 481         struct iwl_host_cmd cmd = {
 482                 .id = REPLY_CARD_STATE_CMD,
 483                 .len = sizeof(u32),
 484                 .data = &flags,
 485                 .meta.flags = meta_flag,
 486         };
 487
 488         return iwl_send_cmd(priv, &cmd);
 489 }
 490
 491 static void iwl_clear_free_frames(struct iwl_priv *priv)
 492 {
 493         struct list_head *element;
 494
 495         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 496                        priv->frames_count);
 497
 498         while (!list_empty(&priv->free_frames)) {
 499                 element = priv->free_frames.next;
 500                 list_del(element);
 501                 kfree(list_entry(element, struct iwl_frame, list));
 502                 priv->frames_count--;
 503         }
 504
 505         if (priv->frames_count) {
 506                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 507                             priv->frames_count);
 508                 priv->frames_count = 0;
 509         }
 510 }
 511
 512 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 513 {
 514         struct iwl_frame *frame;
 515         struct list_head *element;
 516         if (list_empty(&priv->free_frames)) {
 517                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 518                 if (!frame) {
 519                         IWL_ERROR("Could not allocate frame!\n");
 520                         return NULL;
 521                 }
 522
 523                 priv->frames_count++;
 524                 return frame;
 525         }
 526
 527         element = priv->free_frames.next;
 528         list_del(element);
 529         return list_entry(element, struct iwl_frame, list);
 530 }
 531
 532 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 533 {
 534         memset(frame, 0, sizeof(*frame));
 535         list_add(&frame->list, &priv->free_frames);
 536 }
 537
 538 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 539                                 struct ieee80211_hdr *hdr,
 540                                 const u8 *dest, int left)
 541 {
 542
 543         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 544             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 545              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 546                 return 0;
 547
 548         if (priv->ibss_beacon->len > left)
 549                 return 0;
 550
 551         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 552
 553         return priv->ibss_beacon->len;
 554 }
 555
 556 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 557 {
 558         int i;
 559         int rate_mask;
 560
 561         /* Set rate mask*/
 562         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 563                 rate_mask = priv->active_rate_basic & 0xF;
 564         else
 565                 rate_mask = priv->active_rate_basic & 0xFF0;
 566
 567         /* Find lowest valid rate */
 568         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 569                                         i = iwl_rates[i].next_ieee) {
 570                 if (rate_mask & (1 << i))
 571                         return iwl_rates[i].plcp;
 572         }
 573
 574         /* No valid rate was found. Assign the lowest one */
 575         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 576                 return IWL_RATE_1M_PLCP;
 577         else
 578                 return IWL_RATE_6M_PLCP;
 579 }
 580
 581 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 582 {
 583         struct iwl_frame *frame;
 584         unsigned int frame_size;
 585         int rc;
 586         u8 rate;
 587
 588         frame = iwl_get_free_frame(priv);
 589
 590         if (!frame) {
 591                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 592                           "command.\n");
 593                 return -ENOMEM;
 594         }
 595
 596         rate = iwl4965_rate_get_lowest_plcp(priv);
 597
 598         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 599
 600         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 601                               &frame->u.cmd[0]);
 602
 603         iwl_free_frame(priv, frame);
 604
 605         return rc;
 606 }
 607
 608 /******************************************************************************
 609  *
 610  * Misc. internal state and helper functions
 611  *
 612  ******************************************************************************/
 613
 614 /**
 615  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
 616  *
 617  * return : set the bit for each supported rate insert in ie
 618  */
 619 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
 620                                     u16 basic_rate, int *left)
 621 {
 622         u16 ret_rates = 0, bit;
 623         int i;
 624         u8 *cnt = ie;
 625         u8 *rates = ie + 1;
 626
 627         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
 628                 if (bit & supported_rate) {
 629                         ret_rates |= bit;
 630                         rates[*cnt] = iwl_rates[i].ieee |
 631                                 ((bit & basic_rate) ? 0x80 : 0x00);
 632                         (*cnt)++;
 633                         (*left)--;
 634                         if ((*left <= 0) ||
 635                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
 636                                 break;
 637                 }
 638         }
 639
 640         return ret_rates;
 641 }
 642
 643 #ifdef CONFIG_IWL4965_HT
 644 static void iwl4965_ht_conf(struct iwl_priv *priv,
 645                             struct ieee80211_bss_conf *bss_conf)
 646 {
 647         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 648         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 649         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 650
 651         IWL_DEBUG_MAC80211("enter: \n");
 652
 653         iwl_conf->is_ht = bss_conf->assoc_ht;
 654
 655         if (!iwl_conf->is_ht)
 656                 return;
 657
 658         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 659
 660         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 661                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 662         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 663                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 664
 665         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 666         iwl_conf->max_amsdu_size =
 667                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 668
 669         iwl_conf->supported_chan_width =
 670                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 671         iwl_conf->extension_chan_offset =
 672                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 673         /* If no above or below channel supplied disable FAT channel */
 674         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
 675             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
 676                 iwl_conf->supported_chan_width = 0;
 677
 678         iwl_conf->tx_mimo_ps_mode =
 679                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 680         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 681
 682         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 683         iwl_conf->tx_chan_width =
 684                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 685         iwl_conf->ht_protection =
 686                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 687         iwl_conf->non_GF_STA_present =
 688                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 689
 690         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 691         IWL_DEBUG_MAC80211("leave\n");
 692 }
 693
 694 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 695                         u8 *pos, int *left)
 696 {
 697         struct ieee80211_ht_cap *ht_cap;
 698
 699         if (!sband || !sband->ht_info.ht_supported)
 700                 return;
 701
 702         if (*left < sizeof(struct ieee80211_ht_cap))
 703                 return;
 704
 705         *pos++ = sizeof(struct ieee80211_ht_cap);
 706         ht_cap = (struct ieee80211_ht_cap *) pos;
 707
 708         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
 709         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
 710         ht_cap->ampdu_params_info =
 711                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
 712                 ((sband->ht_info.ampdu_density << 2) &
 713                         IEEE80211_HT_CAP_AMPDU_DENSITY);
 714         *left -= sizeof(struct ieee80211_ht_cap);
 715 }
 716 #else
 717 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
 718                                    struct ieee80211_bss_conf *bss_conf)
 719 {
 720 }
 721 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 722                         u8 *pos, int *left)
 723 {
 724 }
 725 #endif
 726
 727
 728 /**
 729  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
 730  */
 731 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
 732                                   enum ieee80211_band band,
 733                                   struct ieee80211_mgmt *frame,
 734                                   int left, int is_direct)
 735 {
 736         int len = 0;
 737         u8 *pos = NULL;
 738         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
 739         const struct ieee80211_supported_band *sband =
 740                                                 iwl_get_hw_mode(priv, band);
 741
 742         /* Make sure there is enough space for the probe request,
 743          * two mandatory IEs and the data */
 744         left -= 24;
 745         if (left < 0)
 746                 return 0;
 747         len += 24;
 748
 749         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 750         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
 751         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
 752         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
 753         frame->seq_ctrl = 0;
 754
 755         /* fill in our indirect SSID IE */
 756         /* ...next IE... */
 757
 758         left -= 2;
 759         if (left < 0)
 760                 return 0;
 761         len += 2;
 762         pos = &(frame->u.probe_req.variable[0]);
 763         *pos++ = WLAN_EID_SSID;
 764         *pos++ = 0;
 765
 766         /* fill in our direct SSID IE... */
 767         if (is_direct) {
 768                 /* ...next IE... */
 769                 left -= 2 + priv->essid_len;
 770                 if (left < 0)
 771                         return 0;
 772                 /* ... fill it in... */
 773                 *pos++ = WLAN_EID_SSID;
 774                 *pos++ = priv->essid_len;
 775                 memcpy(pos, priv->essid, priv->essid_len);
 776                 pos += priv->essid_len;
 777                 len += 2 + priv->essid_len;
 778         }
 779
 780         /* fill in supported rate */
 781         /* ...next IE... */
 782         left -= 2;
 783         if (left < 0)
 784                 return 0;
 785
 786         /* ... fill it in... */
 787         *pos++ = WLAN_EID_SUPP_RATES;
 788         *pos = 0;
 789
 790         /* exclude 60M rate */
 791         active_rates = priv->rates_mask;
 792         active_rates &= ~IWL_RATE_60M_MASK;
 793
 794         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
 795
 796         cck_rates = IWL_CCK_RATES_MASK & active_rates;
 797         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
 798                         active_rate_basic, &left);
 799         active_rates &= ~ret_rates;
 800
 801         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
 802                                  active_rate_basic, &left);
 803         active_rates &= ~ret_rates;
 804
 805         len += 2 + *pos;
 806         pos += (*pos) + 1;
 807         if (active_rates == 0)
 808                 goto fill_end;
 809
 810         /* fill in supported extended rate */
 811         /* ...next IE... */
 812         left -= 2;
 813         if (left < 0)
 814                 return 0;
 815         /* ... fill it in... */
 816         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 817         *pos = 0;
 818         iwl4965_supported_rate_to_ie(pos, active_rates,
 819                                  active_rate_basic, &left);
 820         if (*pos > 0)
 821                 len += 2 + *pos;
 822
 823  fill_end:
 824         /* fill in HT IE */
 825         left -= 2;
 826         if (left < 0)
 827                 return 0;
 828
 829         *pos++ = WLAN_EID_HT_CAPABILITY;
 830         *pos = 0;
 831
 832         iwl_ht_cap_to_ie(sband, pos, &left);
 833
 834         if (*pos > 0)
 835                 len += 2 + *pos;
 836         return (u16)len;
 837 }
 838
 839 /*
 840  * QoS  support
 841 */
 842 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 843                                        struct iwl4965_qosparam_cmd *qos)
 844 {
 845
 846         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 847                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 848 }
 849
 850 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 851 {
 852         unsigned long flags;
 853
 854         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 855                 return;
 856
 857         if (!priv->qos_data.qos_enable)
 858                 return;
 859
 860         spin_lock_irqsave(&priv->lock, flags);
 861         priv->qos_data.def_qos_parm.qos_flags = 0;
 862
 863         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 864             !priv->qos_data.qos_cap.q_AP.txop_request)
 865                 priv->qos_data.def_qos_parm.qos_flags |=
 866                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 867         if (priv->qos_data.qos_active)
 868                 priv->qos_data.def_qos_parm.qos_flags |=
 869                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 870
 871 #ifdef CONFIG_IWL4965_HT
 872         if (priv->current_ht_config.is_ht)
 873                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 874 #endif /* CONFIG_IWL4965_HT */
 875
 876         spin_unlock_irqrestore(&priv->lock, flags);
 877
 878         if (force || iwl_is_associated(priv)) {
 879                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 880                                 priv->qos_data.qos_active,
 881                                 priv->qos_data.def_qos_parm.qos_flags);
 882
 883                 iwl4965_send_qos_params_command(priv,
 884                                 &(priv->qos_data.def_qos_parm));
 885         }
 886 }
 887
 888 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 889 {
 890         /* Filter incoming packets to determine if they are targeted toward
 891          * this network, discarding packets coming from ourselves */
 892         switch (priv->iw_mode) {
 893         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 894                 /* packets from our adapter are dropped (echo) */
 895                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 896                         return 0;
 897                 /* {broad,multi}cast packets to our IBSS go through */
 898                 if (is_multicast_ether_addr(header->addr1))
 899                         return !compare_ether_addr(header->addr3, priv->bssid);
 900                 /* packets to our adapter go through */
 901                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 902         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 903                 /* packets from our adapter are dropped (echo) */
 904                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 905                         return 0;
 906                 /* {broad,multi}cast packets to our BSS go through */
 907                 if (is_multicast_ether_addr(header->addr1))
 908                         return !compare_ether_addr(header->addr2, priv->bssid);
 909                 /* packets to our adapter go through */
 910                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 911         default:
 912                 break;
 913         }
 914
 915         return 1;
 916 }
 917
 918 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 919
 920 static const char *iwl4965_get_tx_fail_reason(u32 status)
 921 {
 922         switch (status & TX_STATUS_MSK) {
 923         case TX_STATUS_SUCCESS:
 924                 return "SUCCESS";
 925                 TX_STATUS_ENTRY(SHORT_LIMIT);
 926                 TX_STATUS_ENTRY(LONG_LIMIT);
 927                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
 928                 TX_STATUS_ENTRY(MGMNT_ABORT);
 929                 TX_STATUS_ENTRY(NEXT_FRAG);
 930                 TX_STATUS_ENTRY(LIFE_EXPIRE);
 931                 TX_STATUS_ENTRY(DEST_PS);
 932                 TX_STATUS_ENTRY(ABORTED);
 933                 TX_STATUS_ENTRY(BT_RETRY);
 934                 TX_STATUS_ENTRY(STA_INVALID);
 935                 TX_STATUS_ENTRY(FRAG_DROPPED);
 936                 TX_STATUS_ENTRY(TID_DISABLE);
 937                 TX_STATUS_ENTRY(FRAME_FLUSHED);
 938                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
 939                 TX_STATUS_ENTRY(TX_LOCKED);
 940                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
 941         }
 942
 943         return "UNKNOWN";
 944 }
 945
 946 /**
 947  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 948  *
 949  * NOTE: priv->mutex is not required before calling this function
 950  */
 951 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 952 {
 953         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 954                 clear_bit(STATUS_SCANNING, &priv->status);
 955                 return 0;
 956         }
 957
 958         if (test_bit(STATUS_SCANNING, &priv->status)) {
 959                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 960                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
 961                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
 962                         queue_work(priv->workqueue, &priv->abort_scan);
 963
 964                 } else
 965                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
 966
 967                 return test_bit(STATUS_SCANNING, &priv->status);
 968         }
 969
 970         return 0;
 971 }
 972
 973 /**
 974  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
 975  * @ms: amount of time to wait (in milliseconds) for scan to abort
 976  *
 977  * NOTE: priv->mutex must be held before calling this function
 978  */
 979 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
 980 {
 981         unsigned long now = jiffies;
 982         int ret;
 983
 984         ret = iwl4965_scan_cancel(priv);
 985         if (ret && ms) {
 986                 mutex_unlock(&priv->mutex);
 987                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
 988                                 test_bit(STATUS_SCANNING, &priv->status))
 989                         msleep(1);
 990                 mutex_lock(&priv->mutex);
 991
 992                 return test_bit(STATUS_SCANNING, &priv->status);
 993         }
 994
 995         return ret;
 996 }
 997
 998 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 999 {
1000         /* Reset ieee stats */
1001
1002         /* We don't reset the net_device_stats (ieee->stats) on
1003          * re-association */
1004
1005         priv->last_seq_num = -1;
1006         priv->last_frag_num = -1;
1007         priv->last_packet_time = 0;
1008
1009         iwl4965_scan_cancel(priv);
1010 }
1011
1012 #define MAX_UCODE_BEACON_INTERVAL       4096
1013 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1014
1015 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1016 {
1017         u16 new_val = 0;
1018         u16 beacon_factor = 0;
1019
1020         beacon_factor =
1021             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1022                 / MAX_UCODE_BEACON_INTERVAL;
1023         new_val = beacon_val / beacon_factor;
1024
1025         return cpu_to_le16(new_val);
1026 }
1027
1028 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1029 {
1030         u64 interval_tm_unit;
1031         u64 tsf, result;
1032         unsigned long flags;
1033         struct ieee80211_conf *conf = NULL;
1034         u16 beacon_int = 0;
1035
1036         conf = ieee80211_get_hw_conf(priv->hw);
1037
1038         spin_lock_irqsave(&priv->lock, flags);
1039         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1040         priv->rxon_timing.timestamp.dw[0] =
1041                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1042
1043         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1044
1045         tsf = priv->timestamp;
1046
1047         beacon_int = priv->beacon_int;
1048         spin_unlock_irqrestore(&priv->lock, flags);
1049
1050         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1051                 if (beacon_int == 0) {
1052                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1053                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1054                 } else {
1055                         priv->rxon_timing.beacon_interval =
1056                                 cpu_to_le16(beacon_int);
1057                         priv->rxon_timing.beacon_interval =
1058                             iwl4965_adjust_beacon_interval(
1059                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1060                 }
1061
1062                 priv->rxon_timing.atim_window = 0;
1063         } else {
1064                 priv->rxon_timing.beacon_interval =
1065                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1066                 /* TODO: we need to get atim_window from upper stack
1067                  * for now we set to 0 */
1068                 priv->rxon_timing.atim_window = 0;
1069         }
1070
1071         interval_tm_unit =
1072                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1073         result = do_div(tsf, interval_tm_unit);
1074         priv->rxon_timing.beacon_init_val =
1075             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1076
1077         IWL_DEBUG_ASSOC
1078             ("beacon interval %d beacon timer %d beacon tim %d\n",
1079                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1080                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1081                 le16_to_cpu(priv->rxon_timing.atim_window));
1082 }
1083
1084 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1085 {
1086         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1087                 IWL_ERROR("APs don't scan.\n");
1088                 return 0;
1089         }
1090
1091         if (!iwl_is_ready_rf(priv)) {
1092                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1093                 return -EIO;
1094         }
1095
1096         if (test_bit(STATUS_SCANNING, &priv->status)) {
1097                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1098                 return -EAGAIN;
1099         }
1100
1101         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1102                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1103                                "Queuing.\n");
1104                 return -EAGAIN;
1105         }
1106
1107         IWL_DEBUG_INFO("Starting scan...\n");
1108         priv->scan_bands = 2;
1109         set_bit(STATUS_SCANNING, &priv->status);
1110         priv->scan_start = jiffies;
1111         priv->scan_pass_start = priv->scan_start;
1112
1113         queue_work(priv->workqueue, &priv->request_scan);
1114
1115         return 0;
1116 }
1117
1118
1119 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1120                                           enum ieee80211_band band)
1121 {
1122         if (band == IEEE80211_BAND_5GHZ) {
1123                 priv->staging_rxon.flags &=
1124                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1125                       | RXON_FLG_CCK_MSK);
1126                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1127         } else {
1128                 /* Copied from iwl4965_post_associate() */
1129                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1130                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1131                 else
1132                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1133
1134                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1135                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1136
1137                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1138                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1139                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1140         }
1141 }
1142
1143 /*
1144  * initialize rxon structure with default values from eeprom
1145  */
1146 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1147 {
1148         const struct iwl_channel_info *ch_info;
1149
1150         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1151
1152         switch (priv->iw_mode) {
1153         case IEEE80211_IF_TYPE_AP:
1154                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1155                 break;
1156
1157         case IEEE80211_IF_TYPE_STA:
1158                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1159                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1160                 break;
1161
1162         case IEEE80211_IF_TYPE_IBSS:
1163                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1164                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1165                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1166                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1167                 break;
1168
1169         case IEEE80211_IF_TYPE_MNTR:
1170                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1171                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1172                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1173                 break;
1174         default:
1175                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1176                 break;
1177         }
1178
1179 #if 0
1180         /* TODO:  Figure out when short_preamble would be set and cache from
1181          * that */
1182         if (!hw_to_local(priv->hw)->short_preamble)
1183                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1184         else
1185                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1186 #endif
1187
1188         ch_info = iwl_get_channel_info(priv, priv->band,
1189                                        le16_to_cpu(priv->staging_rxon.channel));
1190
1191         if (!ch_info)
1192                 ch_info = &priv->channel_info[0];
1193
1194         /*
1195          * in some case A channels are all non IBSS
1196          * in this case force B/G channel
1197          */
1198         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1199             !(is_channel_ibss(ch_info)))
1200                 ch_info = &priv->channel_info[0];
1201
1202         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1203         priv->band = ch_info->band;
1204
1205         iwl4965_set_flags_for_phymode(priv, priv->band);
1206
1207         priv->staging_rxon.ofdm_basic_rates =
1208             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1209         priv->staging_rxon.cck_basic_rates =
1210             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1211
1212         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1213                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1214         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1215         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1216         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1217         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1218         iwl_set_rxon_chain(priv);
1219 }
1220
1221 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1222 {
1223         if (mode == IEEE80211_IF_TYPE_IBSS) {
1224                 const struct iwl_channel_info *ch_info;
1225
1226                 ch_info = iwl_get_channel_info(priv,
1227                         priv->band,
1228                         le16_to_cpu(priv->staging_rxon.channel));
1229
1230                 if (!ch_info || !is_channel_ibss(ch_info)) {
1231                         IWL_ERROR("channel %d not IBSS channel\n",
1232                                   le16_to_cpu(priv->staging_rxon.channel));
1233                         return -EINVAL;
1234                 }
1235         }
1236
1237         priv->iw_mode = mode;
1238
1239         iwl4965_connection_init_rx_config(priv);
1240         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1241
1242         iwlcore_clear_stations_table(priv);
1243
1244         /* dont commit rxon if rf-kill is on*/
1245         if (!iwl_is_ready_rf(priv))
1246                 return -EAGAIN;
1247
1248         cancel_delayed_work(&priv->scan_check);
1249         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1250                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1251                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1252                 return -EAGAIN;
1253         }
1254
1255         iwl4965_commit_rxon(priv);
1256
1257         return 0;
1258 }
1259
1260 static void iwl4965_set_rate(struct iwl_priv *priv)
1261 {
1262         const struct ieee80211_supported_band *hw = NULL;
1263         struct ieee80211_rate *rate;
1264         int i;
1265
1266         hw = iwl_get_hw_mode(priv, priv->band);
1267         if (!hw) {
1268                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1269                 return;
1270         }
1271
1272         priv->active_rate = 0;
1273         priv->active_rate_basic = 0;
1274
1275         for (i = 0; i < hw->n_bitrates; i++) {
1276                 rate = &(hw->bitrates[i]);
1277                 if (rate->hw_value < IWL_RATE_COUNT)
1278                         priv->active_rate |= (1 << rate->hw_value);
1279         }
1280
1281         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1282                        priv->active_rate, priv->active_rate_basic);
1283
1284         /*
1285          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1286          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1287          * OFDM
1288          */
1289         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1290                 priv->staging_rxon.cck_basic_rates =
1291                     ((priv->active_rate_basic &
1292                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1293         else
1294                 priv->staging_rxon.cck_basic_rates =
1295                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1296
1297         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1298                 priv->staging_rxon.ofdm_basic_rates =
1299                     ((priv->active_rate_basic &
1300                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1301                       IWL_FIRST_OFDM_RATE) & 0xFF;
1302         else
1303                 priv->staging_rxon.ofdm_basic_rates =
1304                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1305 }
1306
1307 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1308 {
1309         unsigned long flags;
1310
1311         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1312                 return;
1313
1314         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1315                           disable_radio ? "OFF" : "ON");
1316
1317         if (disable_radio) {
1318                 iwl4965_scan_cancel(priv);
1319                 /* FIXME: This is a workaround for AP */
1320                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1321                         spin_lock_irqsave(&priv->lock, flags);
1322                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1323                                     CSR_UCODE_SW_BIT_RFKILL);
1324                         spin_unlock_irqrestore(&priv->lock, flags);
1325                         /* call the host command only if no hw rf-kill set */
1326                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1327                             iwl_is_ready(priv))
1328                                 iwl4965_send_card_state(priv,
1329                                                         CARD_STATE_CMD_DISABLE,
1330                                                         0);
1331                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1332
1333                         /* make sure mac80211 stop sending Tx frame */
1334                         if (priv->mac80211_registered)
1335                                 ieee80211_stop_queues(priv->hw);
1336                 }
1337                 return;
1338         }
1339
1340         spin_lock_irqsave(&priv->lock, flags);
1341         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1342
1343         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1344         spin_unlock_irqrestore(&priv->lock, flags);
1345
1346         /* wake up ucode */
1347         msleep(10);
1348
1349         spin_lock_irqsave(&priv->lock, flags);
1350         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1351         if (!iwl_grab_nic_access(priv))
1352                 iwl_release_nic_access(priv);
1353         spin_unlock_irqrestore(&priv->lock, flags);
1354
1355         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1356                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1357                                   "disabled by HW switch\n");
1358                 return;
1359         }
1360
1361         queue_work(priv->workqueue, &priv->restart);
1362         return;
1363 }
1364
1365 #define IWL_PACKET_RETRY_TIME HZ
1366
1367 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1368 {
1369         u16 sc = le16_to_cpu(header->seq_ctrl);
1370         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1371         u16 frag = sc & IEEE80211_SCTL_FRAG;
1372         u16 *last_seq, *last_frag;
1373         unsigned long *last_time;
1374
1375         switch (priv->iw_mode) {
1376         case IEEE80211_IF_TYPE_IBSS:{
1377                 struct list_head *p;
1378                 struct iwl4965_ibss_seq *entry = NULL;
1379                 u8 *mac = header->addr2;
1380                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1381
1382                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1383                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1384                         if (!compare_ether_addr(entry->mac, mac))
1385                                 break;
1386                 }
1387                 if (p == &priv->ibss_mac_hash[index]) {
1388                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1389                         if (!entry) {
1390                                 IWL_ERROR("Cannot malloc new mac entry\n");
1391                                 return 0;
1392                         }
1393                         memcpy(entry->mac, mac, ETH_ALEN);
1394                         entry->seq_num = seq;
1395                         entry->frag_num = frag;
1396                         entry->packet_time = jiffies;
1397                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1398                         return 0;
1399                 }
1400                 last_seq = &entry->seq_num;
1401                 last_frag = &entry->frag_num;
1402                 last_time = &entry->packet_time;
1403                 break;
1404         }
1405         case IEEE80211_IF_TYPE_STA:
1406                 last_seq = &priv->last_seq_num;
1407                 last_frag = &priv->last_frag_num;
1408                 last_time = &priv->last_packet_time;
1409                 break;
1410         default:
1411                 return 0;
1412         }
1413         if ((*last_seq == seq) &&
1414             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1415                 if (*last_frag == frag)
1416                         goto drop;
1417                 if (*last_frag + 1 != frag)
1418                         /* out-of-order fragment */
1419                         goto drop;
1420         } else
1421                 *last_seq = seq;
1422
1423         *last_frag = frag;
1424         *last_time = jiffies;
1425         return 0;
1426
1427  drop:
1428         return 1;
1429 }
1430
1431 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1432
1433 #include "iwl-spectrum.h"
1434
1435 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1436 #define BEACON_TIME_MASK_HIGH   0xFF000000
1437 #define TIME_UNIT               1024
1438
1439 /*
1440  * extended beacon time format
1441  * time in usec will be changed into a 32-bit value in 8:24 format
1442  * the high 1 byte is the beacon counts
1443  * the lower 3 bytes is the time in usec within one beacon interval
1444  */
1445
1446 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1447 {
1448         u32 quot;
1449         u32 rem;
1450         u32 interval = beacon_interval * 1024;
1451
1452         if (!interval || !usec)
1453                 return 0;
1454
1455         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1456         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1457
1458         return (quot << 24) + rem;
1459 }
1460
1461 /* base is usually what we get from ucode with each received frame,
1462  * the same as HW timer counter counting down
1463  */
1464
1465 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1466 {
1467         u32 base_low = base & BEACON_TIME_MASK_LOW;
1468         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1469         u32 interval = beacon_interval * TIME_UNIT;
1470         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1471             (addon & BEACON_TIME_MASK_HIGH);
1472
1473         if (base_low > addon_low)
1474                 res += base_low - addon_low;
1475         else if (base_low < addon_low) {
1476                 res += interval + base_low - addon_low;
1477                 res += (1 << 24);
1478         } else
1479                 res += (1 << 24);
1480
1481         return cpu_to_le32(res);
1482 }
1483
1484 static int iwl4965_get_measurement(struct iwl_priv *priv,
1485                                struct ieee80211_measurement_params *params,
1486                                u8 type)
1487 {
1488         struct iwl4965_spectrum_cmd spectrum;
1489         struct iwl_rx_packet *res;
1490         struct iwl_host_cmd cmd = {
1491                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1492                 .data = (void *)&spectrum,
1493                 .meta.flags = CMD_WANT_SKB,
1494         };
1495         u32 add_time = le64_to_cpu(params->start_time);
1496         int rc;
1497         int spectrum_resp_status;
1498         int duration = le16_to_cpu(params->duration);
1499
1500         if (iwl_is_associated(priv))
1501                 add_time =
1502                     iwl4965_usecs_to_beacons(
1503                         le64_to_cpu(params->start_time) - priv->last_tsf,
1504                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1505
1506         memset(&spectrum, 0, sizeof(spectrum));
1507
1508         spectrum.channel_count = cpu_to_le16(1);
1509         spectrum.flags =
1510             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1511         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1512         cmd.len = sizeof(spectrum);
1513         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1514
1515         if (iwl_is_associated(priv))
1516                 spectrum.start_time =
1517                     iwl4965_add_beacon_time(priv->last_beacon_time,
1518                                 add_time,
1519                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1520         else
1521                 spectrum.start_time = 0;
1522
1523         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1524         spectrum.channels[0].channel = params->channel;
1525         spectrum.channels[0].type = type;
1526         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1527                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1528                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1529
1530         rc = iwl_send_cmd_sync(priv, &cmd);
1531         if (rc)
1532                 return rc;
1533
1534         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1535         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1536                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1537                 rc = -EIO;
1538         }
1539
1540         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1541         switch (spectrum_resp_status) {
1542         case 0:         /* Command will be handled */
1543                 if (res->u.spectrum.id != 0xff) {
1544                         IWL_DEBUG_INFO
1545                             ("Replaced existing measurement: %d\n",
1546                              res->u.spectrum.id);
1547                         priv->measurement_status &= ~MEASUREMENT_READY;
1548                 }
1549                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1550                 rc = 0;
1551                 break;
1552
1553         case 1:         /* Command will not be handled */
1554                 rc = -EAGAIN;
1555                 break;
1556         }
1557
1558         dev_kfree_skb_any(cmd.meta.u.skb);
1559
1560         return rc;
1561 }
1562 #endif
1563
1564 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
1565                                      struct iwl_tx_info *tx_sta)
1566 {
1567         ieee80211_tx_status_irqsafe(priv->hw, tx_sta->skb[0]);
1568         tx_sta->skb[0] = NULL;
1569 }
1570
1571 /**
1572  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
1573  *
1574  * When FW advances 'R' index, all entries between old and new 'R' index
1575  * need to be reclaimed. As result, some free space forms.  If there is
1576  * enough free space (> low mark), wake the stack that feeds us.
1577  */
1578 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
1579 {
1580         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1581         struct iwl_queue *q = &txq->q;
1582         int nfreed = 0;
1583
1584         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1585                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1586                           "is out of range [0-%d] %d %d.\n", txq_id,
1587                           index, q->n_bd, q->write_ptr, q->read_ptr);
1588                 return 0;
1589         }
1590
1591         for (index = iwl_queue_inc_wrap(index, q->n_bd);
1592                 q->read_ptr != index;
1593                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1594                 if (txq_id != IWL_CMD_QUEUE_NUM) {
1595                         iwl4965_txstatus_to_ieee(priv,
1596                                         &(txq->txb[txq->q.read_ptr]));
1597                         iwl_hw_txq_free_tfd(priv, txq);
1598                 } else if (nfreed > 1) {
1599                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
1600                                         q->write_ptr, q->read_ptr);
1601                         queue_work(priv->workqueue, &priv->restart);
1602                 }
1603                 nfreed++;
1604         }
1605
1606         return nfreed;
1607 }
1608
1609 static int iwl4965_is_tx_success(u32 status)
1610 {
1611         status &= TX_STATUS_MSK;
1612         return (status == TX_STATUS_SUCCESS)
1613             || (status == TX_STATUS_DIRECT_DONE);
1614 }
1615
1616 /******************************************************************************
1617  *
1618  * Generic RX handler implementations
1619  *
1620  ******************************************************************************/
1621 #ifdef CONFIG_IWL4965_HT
1622
1623 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
1624                                     struct ieee80211_hdr *hdr)
1625 {
1626         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
1627                 return IWL_AP_ID;
1628         else {
1629                 u8 *da = ieee80211_get_DA(hdr);
1630                 return iwl_find_station(priv, da);
1631         }
1632 }
1633
1634 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
1635         struct iwl_priv *priv, int txq_id, int idx)
1636 {
1637         if (priv->txq[txq_id].txb[idx].skb[0])
1638                 return (struct ieee80211_hdr *)priv->txq[txq_id].
1639                                 txb[idx].skb[0]->data;
1640         return NULL;
1641 }
1642
1643 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1644 {
1645         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
1646                                 tx_resp->frame_count);
1647         return le32_to_cpu(*scd_ssn) & MAX_SN;
1648
1649 }
1650
1651 /**
1652  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
1653  */
1654 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1655                                       struct iwl_ht_agg *agg,
1656                                       struct iwl4965_tx_resp_agg *tx_resp,
1657                                       u16 start_idx)
1658 {
1659         u16 status;
1660         struct agg_tx_status *frame_status = &tx_resp->status;
1661         struct ieee80211_tx_info *info = NULL;
1662         struct ieee80211_hdr *hdr = NULL;
1663         int i, sh;
1664         int txq_id, idx;
1665         u16 seq;
1666
1667         if (agg->wait_for_ba)
1668                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
1669
1670         agg->frame_count = tx_resp->frame_count;
1671         agg->start_idx = start_idx;
1672         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1673         agg->bitmap = 0;
1674
1675         /* # frames attempted by Tx command */
1676         if (agg->frame_count == 1) {
1677                 /* Only one frame was attempted; no block-ack will arrive */
1678                 status = le16_to_cpu(frame_status[0].status);
1679                 seq  = le16_to_cpu(frame_status[0].sequence);
1680                 idx = SEQ_TO_INDEX(seq);
1681                 txq_id = SEQ_TO_QUEUE(seq);
1682
1683                 /* FIXME: code repetition */
1684                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1685                                    agg->frame_count, agg->start_idx, idx);
1686
1687                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1688                 info->status.retry_count = tx_resp->failure_frame;
1689                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1690                 info->flags |= iwl4965_is_tx_success(status)?
1691                         IEEE80211_TX_STAT_ACK : 0;
1692                 iwl4965_hwrate_to_tx_control(priv,
1693                                              le32_to_cpu(tx_resp->rate_n_flags),
1694                                              info);
1695                 /* FIXME: code repetition end */
1696
1697                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1698                                     status & 0xff, tx_resp->failure_frame);
1699                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
1700                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
1701
1702                 agg->wait_for_ba = 0;
1703         } else {
1704                 /* Two or more frames were attempted; expect block-ack */
1705                 u64 bitmap = 0;
1706                 int start = agg->start_idx;
1707
1708                 /* Construct bit-map of pending frames within Tx window */
1709                 for (i = 0; i < agg->frame_count; i++) {
1710                         u16 sc;
1711                         status = le16_to_cpu(frame_status[i].status);
1712                         seq  = le16_to_cpu(frame_status[i].sequence);
1713                         idx = SEQ_TO_INDEX(seq);
1714                         txq_id = SEQ_TO_QUEUE(seq);
1715
1716                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1717                                       AGG_TX_STATE_ABORT_MSK))
1718                                 continue;
1719
1720                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1721                                            agg->frame_count, txq_id, idx);
1722
1723                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
1724
1725                         sc = le16_to_cpu(hdr->seq_ctrl);
1726                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1727                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
1728                                           " idx=%d, seq_idx=%d, seq=%d\n",
1729                                           idx, SEQ_TO_SN(sc),
1730                                           hdr->seq_ctrl);
1731                                 return -1;
1732                         }
1733
1734                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1735                                            i, idx, SEQ_TO_SN(sc));
1736
1737                         sh = idx - start;
1738                         if (sh > 64) {
1739                                 sh = (start - idx) + 0xff;
1740                                 bitmap = bitmap << sh;
1741                                 sh = 0;
1742                                 start = idx;
1743                         } else if (sh < -64)
1744                                 sh  = 0xff - (start - idx);
1745                         else if (sh < 0) {
1746                                 sh = start - idx;
1747                                 start = idx;
1748                                 bitmap = bitmap << sh;
1749                                 sh = 0;
1750                         }
1751                         bitmap |= (1 << sh);
1752                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1753                                            start, (u32)(bitmap & 0xFFFFFFFF));
1754                 }
1755
1756                 agg->bitmap = bitmap;
1757                 agg->start_idx = start;
1758                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1759                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1760                                    agg->frame_count, agg->start_idx,
1761                                    (unsigned long long)agg->bitmap);
1762
1763                 if (bitmap)
1764                         agg->wait_for_ba = 1;
1765         }
1766         return 0;
1767 }
1768 #endif
1769
1770 /**
1771  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1772  */
1773 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1774                                 struct iwl_rx_mem_buffer *rxb)
1775 {
1776         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1777         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1778         int txq_id = SEQ_TO_QUEUE(sequence);
1779         int index = SEQ_TO_INDEX(sequence);
1780         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1781         struct ieee80211_tx_info *info;
1782         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1783         u32  status = le32_to_cpu(tx_resp->status);
1784 #ifdef CONFIG_IWL4965_HT
1785         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
1786         u16 fc;
1787         struct ieee80211_hdr *hdr;
1788         u8 *qc = NULL;
1789 #endif
1790
1791         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1792                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1793                           "is out of range [0-%d] %d %d\n", txq_id,
1794                           index, txq->q.n_bd, txq->q.write_ptr,
1795                           txq->q.read_ptr);
1796                 return;
1797         }
1798
1799         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1800         memset(&info->status, 0, sizeof(info->status));
1801
1802 #ifdef CONFIG_IWL4965_HT
1803         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
1804         fc = le16_to_cpu(hdr->frame_control);
1805         if (ieee80211_is_qos_data(fc)) {
1806                 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
1807                 tid = qc[0] & 0xf;
1808         }
1809
1810         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
1811         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1812                 IWL_ERROR("Station not known\n");
1813                 return;
1814         }
1815
1816         if (txq->sched_retry) {
1817                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
1818                 struct iwl_ht_agg *agg = NULL;
1819
1820                 if (!qc)
1821                         return;
1822
1823                 agg = &priv->stations[sta_id].tid[tid].agg;
1824
1825                 iwl4965_tx_status_reply_tx(priv, agg,
1826                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
1827
1828                 if ((tx_resp->frame_count == 1) &&
1829                     !iwl4965_is_tx_success(status)) {
1830                         /* TODO: send BAR */
1831                 }
1832
1833                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1834                         int freed, ampdu_q;
1835                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1836                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1837                                            "%d index %d\n", scd_ssn , index);
1838                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1839                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1840
1841                         if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1842                             txq_id >= 0 && priv->mac80211_registered &&
1843                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1844                                 /* calculate mac80211 ampdu sw queue to wake */
1845                                 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
1846                                           priv->hw->queues;
1847                                 if (agg->state == IWL_AGG_OFF)
1848                                         ieee80211_wake_queue(priv->hw, txq_id);
1849                                 else
1850                                         ieee80211_wake_queue(priv->hw, ampdu_q);
1851                         }
1852                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1853                 }
1854         } else {
1855 #endif /* CONFIG_IWL4965_HT */
1856
1857         info->status.retry_count = tx_resp->failure_frame;
1858         info->flags |=
1859             iwl4965_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
1860         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
1861                                      info);
1862
1863         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
1864                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
1865                      status, le32_to_cpu(tx_resp->rate_n_flags),
1866                      tx_resp->failure_frame);
1867
1868         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
1869 #ifdef CONFIG_IWL4965_HT
1870         if (index != -1) {
1871                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1872                 if (tid != MAX_TID_COUNT)
1873                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1874                 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1875                         (txq_id >= 0) && priv->mac80211_registered)
1876                         ieee80211_wake_queue(priv->hw, txq_id);
1877                 if (tid != MAX_TID_COUNT)
1878                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1879         }
1880         }
1881 #endif /* CONFIG_IWL4965_HT */
1882
1883         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1884                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
1885 }
1886
1887
1888 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1889                                 struct iwl_rx_mem_buffer *rxb)
1890 {
1891         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1892         struct iwl_alive_resp *palive;
1893         struct delayed_work *pwork;
1894
1895         palive = &pkt->u.alive_frame;
1896
1897         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1898                        "0x%01X 0x%01X\n",
1899                        palive->is_valid, palive->ver_type,
1900                        palive->ver_subtype);
1901
1902         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1903                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1904                 memcpy(&priv->card_alive_init,
1905                        &pkt->u.alive_frame,
1906                        sizeof(struct iwl_init_alive_resp));
1907                 pwork = &priv->init_alive_start;
1908         } else {
1909                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1910                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1911                        sizeof(struct iwl_alive_resp));
1912                 pwork = &priv->alive_start;
1913         }
1914
1915         /* We delay the ALIVE response by 5ms to
1916          * give the HW RF Kill time to activate... */
1917         if (palive->is_valid == UCODE_VALID_OK)
1918                 queue_delayed_work(priv->workqueue, pwork,
1919                                    msecs_to_jiffies(5));
1920         else
1921                 IWL_WARNING("uCode did not respond OK.\n");
1922 }
1923
1924 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1925                                    struct iwl_rx_mem_buffer *rxb)
1926 {
1927         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1928
1929         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1930                 "seq 0x%04X ser 0x%08X\n",
1931                 le32_to_cpu(pkt->u.err_resp.error_type),
1932                 get_cmd_string(pkt->u.err_resp.cmd_id),
1933                 pkt->u.err_resp.cmd_id,
1934                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1935                 le32_to_cpu(pkt->u.err_resp.error_info));
1936 }
1937
1938 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1939
1940 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1941 {
1942         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1943         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1944         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1945         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1946                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1947         rxon->channel = csa->channel;
1948         priv->staging_rxon.channel = csa->channel;
1949 }
1950
1951 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1952                                           struct iwl_rx_mem_buffer *rxb)
1953 {
1954 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1955         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1956         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1957
1958         if (!report->state) {
1959                 IWL_DEBUG(IWL_DL_11H,
1960                         "Spectrum Measure Notification: Start\n");
1961                 return;
1962         }
1963
1964         memcpy(&priv->measure_report, report, sizeof(*report));
1965         priv->measurement_status |= MEASUREMENT_READY;
1966 #endif
1967 }
1968
1969 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1970                                       struct iwl_rx_mem_buffer *rxb)
1971 {
1972 #ifdef CONFIG_IWLWIFI_DEBUG
1973         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1974         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1975         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1976                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1977 #endif
1978 }
1979
1980 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1981                                              struct iwl_rx_mem_buffer *rxb)
1982 {
1983         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1984         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1985                         "notification for %s:\n",
1986                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1987         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1988 }
1989
1990 static void iwl4965_bg_beacon_update(struct work_struct *work)
1991 {
1992         struct iwl_priv *priv =
1993                 container_of(work, struct iwl_priv, beacon_update);
1994         struct sk_buff *beacon;
1995
1996         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1997         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1998
1999         if (!beacon) {
2000                 IWL_ERROR("update beacon failed\n");
2001                 return;
2002         }
2003
2004         mutex_lock(&priv->mutex);
2005         /* new beacon skb is allocated every time; dispose previous.*/
2006         if (priv->ibss_beacon)
2007                 dev_kfree_skb(priv->ibss_beacon);
2008
2009         priv->ibss_beacon = beacon;
2010         mutex_unlock(&priv->mutex);
2011
2012         iwl4965_send_beacon_cmd(priv);
2013 }
2014
2015 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2016                                 struct iwl_rx_mem_buffer *rxb)
2017 {
2018 #ifdef CONFIG_IWLWIFI_DEBUG
2019         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2020         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2021         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2022
2023         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2024                 "tsf %d %d rate %d\n",
2025                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2026                 beacon->beacon_notify_hdr.failure_frame,
2027                 le32_to_cpu(beacon->ibss_mgr_status),
2028                 le32_to_cpu(beacon->high_tsf),
2029                 le32_to_cpu(beacon->low_tsf), rate);
2030 #endif
2031
2032         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2033             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2034                 queue_work(priv->workqueue, &priv->beacon_update);
2035 }
2036
2037 /* Service response to REPLY_SCAN_CMD (0x80) */
2038 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2039                               struct iwl_rx_mem_buffer *rxb)
2040 {
2041 #ifdef CONFIG_IWLWIFI_DEBUG
2042         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2043         struct iwl4965_scanreq_notification *notif =
2044             (struct iwl4965_scanreq_notification *)pkt->u.raw;
2045
2046         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2047 #endif
2048 }
2049
2050 /* Service SCAN_START_NOTIFICATION (0x82) */
2051 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2052                                     struct iwl_rx_mem_buffer *rxb)
2053 {
2054         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2055         struct iwl4965_scanstart_notification *notif =
2056             (struct iwl4965_scanstart_notification *)pkt->u.raw;
2057         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2058         IWL_DEBUG_SCAN("Scan start: "
2059                        "%d [802.11%s] "
2060                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2061                        notif->channel,
2062                        notif->band ? "bg" : "a",
2063                        notif->tsf_high,
2064                        notif->tsf_low, notif->status, notif->beacon_timer);
2065 }
2066
2067 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2068 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2069                                       struct iwl_rx_mem_buffer *rxb)
2070 {
2071         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2072         struct iwl4965_scanresults_notification *notif =
2073             (struct iwl4965_scanresults_notification *)pkt->u.raw;
2074
2075         IWL_DEBUG_SCAN("Scan ch.res: "
2076                        "%d [802.11%s] "
2077                        "(TSF: 0x%08X:%08X) - %d "
2078                        "elapsed=%lu usec (%dms since last)\n",
2079                        notif->channel,
2080                        notif->band ? "bg" : "a",
2081                        le32_to_cpu(notif->tsf_high),
2082                        le32_to_cpu(notif->tsf_low),
2083                        le32_to_cpu(notif->statistics[0]),
2084                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2085                        jiffies_to_msecs(elapsed_jiffies
2086                                         (priv->last_scan_jiffies, jiffies)));
2087
2088         priv->last_scan_jiffies = jiffies;
2089         priv->next_scan_jiffies = 0;
2090 }
2091
2092 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2093 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2094                                        struct iwl_rx_mem_buffer *rxb)
2095 {
2096         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2097         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2098
2099         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2100                        scan_notif->scanned_channels,
2101                        scan_notif->tsf_low,
2102                        scan_notif->tsf_high, scan_notif->status);
2103
2104         /* The HW is no longer scanning */
2105         clear_bit(STATUS_SCAN_HW, &priv->status);
2106
2107         /* The scan completion notification came in, so kill that timer... */
2108         cancel_delayed_work(&priv->scan_check);
2109
2110         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2111                        (priv->scan_bands == 2) ? "2.4" : "5.2",
2112                        jiffies_to_msecs(elapsed_jiffies
2113                                         (priv->scan_pass_start, jiffies)));
2114
2115         /* Remove this scanned band from the list
2116          * of pending bands to scan */
2117         priv->scan_bands--;
2118
2119         /* If a request to abort was given, or the scan did not succeed
2120          * then we reset the scan state machine and terminate,
2121          * re-queuing another scan if one has been requested */
2122         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2123                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2124                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2125         } else {
2126                 /* If there are more bands on this scan pass reschedule */
2127                 if (priv->scan_bands > 0)
2128                         goto reschedule;
2129         }
2130
2131         priv->last_scan_jiffies = jiffies;
2132         priv->next_scan_jiffies = 0;
2133         IWL_DEBUG_INFO("Setting scan to off\n");
2134
2135         clear_bit(STATUS_SCANNING, &priv->status);
2136
2137         IWL_DEBUG_INFO("Scan took %dms\n",
2138                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2139
2140         queue_work(priv->workqueue, &priv->scan_completed);
2141
2142         return;
2143
2144 reschedule:
2145         priv->scan_pass_start = jiffies;
2146         queue_work(priv->workqueue, &priv->request_scan);
2147 }
2148
2149 /* Handle notification from uCode that card's power state is changing
2150  * due to software, hardware, or critical temperature RFKILL */
2151 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2152                                     struct iwl_rx_mem_buffer *rxb)
2153 {
2154         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2155         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2156         unsigned long status = priv->status;
2157
2158         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2159                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2160                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2161
2162         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2163                      RF_CARD_DISABLED)) {
2164
2165                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2166                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2167
2168                 if (!iwl_grab_nic_access(priv)) {
2169                         iwl_write_direct32(
2170                                 priv, HBUS_TARG_MBX_C,
2171                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2172
2173                         iwl_release_nic_access(priv);
2174                 }
2175
2176                 if (!(flags & RXON_CARD_DISABLED)) {
2177                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2178                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2179                         if (!iwl_grab_nic_access(priv)) {
2180                                 iwl_write_direct32(
2181                                         priv, HBUS_TARG_MBX_C,
2182                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2183
2184                                 iwl_release_nic_access(priv);
2185                         }
2186                 }
2187
2188                 if (flags & RF_CARD_DISABLED) {
2189                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2190                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2191                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2192                         if (!iwl_grab_nic_access(priv))
2193                                 iwl_release_nic_access(priv);
2194                 }
2195         }
2196
2197         if (flags & HW_CARD_DISABLED)
2198                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2199         else
2200                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2201
2202
2203         if (flags & SW_CARD_DISABLED)
2204                 set_bit(STATUS_RF_KILL_SW, &priv->status);
2205         else
2206                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2207
2208         if (!(flags & RXON_CARD_DISABLED))
2209                 iwl4965_scan_cancel(priv);
2210
2211         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2212              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2213             (test_bit(STATUS_RF_KILL_SW, &status) !=
2214              test_bit(STATUS_RF_KILL_SW, &priv->status)))
2215                 queue_work(priv->workqueue, &priv->rf_kill);
2216         else
2217                 wake_up_interruptible(&priv->wait_command_queue);
2218 }
2219
2220 /**
2221  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2222  *
2223  * Setup the RX handlers for each of the reply types sent from the uCode
2224  * to the host.
2225  *
2226  * This function chains into the hardware specific files for them to setup
2227  * any hardware specific handlers as well.
2228  */
2229 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2230 {
2231         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
2232         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2233         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2234         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2235             iwl4965_rx_spectrum_measure_notif;
2236         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2237         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2238             iwl4965_rx_pm_debug_statistics_notif;
2239         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
2240
2241         /*
2242          * The same handler is used for both the REPLY to a discrete
2243          * statistics request from the host as well as for the periodic
2244          * statistics notifications (after received beacons) from the uCode.
2245          */
2246         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2247         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
2248
2249         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2250         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
2251         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2252             iwl4965_rx_scan_results_notif;
2253         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2254             iwl4965_rx_scan_complete_notif;
2255         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2256         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2257
2258         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
2259             iwl_rx_missed_beacon_notif;
2260
2261         /* Set up hardware specific Rx handlers */
2262         priv->cfg->ops->lib->rx_handler_setup(priv);
2263 }
2264
2265 /**
2266  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2267  * @rxb: Rx buffer to reclaim
2268  *
2269  * If an Rx buffer has an async callback associated with it the callback
2270  * will be executed.  The attached skb (if present) will only be freed
2271  * if the callback returns 1
2272  */
2273 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
2274                                     struct iwl_rx_mem_buffer *rxb)
2275 {
2276         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2277         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2278         int txq_id = SEQ_TO_QUEUE(sequence);
2279         int index = SEQ_TO_INDEX(sequence);
2280         int huge = sequence & SEQ_HUGE_FRAME;
2281         int cmd_index;
2282         struct iwl_cmd *cmd;
2283
2284         /* If a Tx command is being handled and it isn't in the actual
2285          * command queue then there a command routing bug has been introduced
2286          * in the queue management code. */
2287         if (txq_id != IWL_CMD_QUEUE_NUM)
2288                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2289                           txq_id, pkt->hdr.cmd);
2290         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2291
2292         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2293         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2294
2295         /* Input error checking is done when commands are added to queue. */
2296         if (cmd->meta.flags & CMD_WANT_SKB) {
2297                 cmd->meta.source->u.skb = rxb->skb;
2298                 rxb->skb = NULL;
2299         } else if (cmd->meta.u.callback &&
2300                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
2301                 rxb->skb = NULL;
2302
2303         iwl4965_tx_queue_reclaim(priv, txq_id, index);
2304
2305         if (!(cmd->meta.flags & CMD_ASYNC)) {
2306                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2307                 wake_up_interruptible(&priv->wait_command_queue);
2308         }
2309 }
2310
2311 /*
2312  * this should be called while priv->lock is locked
2313 */
2314 static void __iwl_rx_replenish(struct iwl_priv *priv)
2315 {
2316         iwl_rx_allocate(priv);
2317         iwl_rx_queue_restock(priv);
2318 }
2319
2320
2321 /**
2322  * iwl_rx_handle - Main entry function for receiving responses from uCode
2323  *
2324  * Uses the priv->rx_handlers callback function array to invoke
2325  * the appropriate handlers, including command responses,
2326  * frame-received notifications, and other notifications.
2327  */
2328 void iwl_rx_handle(struct iwl_priv *priv)
2329 {
2330         struct iwl_rx_mem_buffer *rxb;
2331         struct iwl_rx_packet *pkt;
2332         struct iwl_rx_queue *rxq = &priv->rxq;
2333         u32 r, i;
2334         int reclaim;
2335         unsigned long flags;
2336         u8 fill_rx = 0;
2337         u32 count = 8;
2338
2339         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2340          * buffer that the driver may process (last buffer filled by ucode). */
2341         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2342         i = rxq->read;
2343
2344         /* Rx interrupt, but nothing sent from uCode */
2345         if (i == r)
2346                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2347
2348         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2349                 fill_rx = 1;
2350
2351         while (i != r) {
2352                 rxb = rxq->queue[i];
2353
2354                 /* If an RXB doesn't have a Rx queue slot associated with it,
2355                  * then a bug has been introduced in the queue refilling
2356                  * routines -- catch it here */
2357                 BUG_ON(rxb == NULL);
2358
2359                 rxq->queue[i] = NULL;
2360
2361                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2362                                             priv->hw_params.rx_buf_size,
2363                                             PCI_DMA_FROMDEVICE);
2364                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2365
2366                 /* Reclaim a command buffer only if this packet is a response
2367                  *   to a (driver-originated) command.
2368                  * If the packet (e.g. Rx frame) originated from uCode,
2369                  *   there is no command buffer to reclaim.
2370                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2371                  *   but apparently a few don't get set; catch them here. */
2372                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2373                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2374                         (pkt->hdr.cmd != REPLY_RX) &&
2375                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2376                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2377                         (pkt->hdr.cmd != REPLY_TX);
2378
2379                 /* Based on type of command response or notification,
2380                  *   handle those that need handling via function in
2381                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
2382                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2383                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2384                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2385                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2386                 } else {
2387                         /* No handling needed */
2388                         IWL_DEBUG(IWL_DL_RX,
2389                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2390                                 r, i, get_cmd_string(pkt->hdr.cmd),
2391                                 pkt->hdr.cmd);
2392                 }
2393
2394                 if (reclaim) {
2395                         /* Invoke any callbacks, transfer the skb to caller, and
2396                          * fire off the (possibly) blocking iwl_send_cmd()
2397                          * as we reclaim the driver command queue */
2398                         if (rxb && rxb->skb)
2399                                 iwl4965_tx_cmd_complete(priv, rxb);
2400                         else
2401                                 IWL_WARNING("Claim null rxb?\n");
2402                 }
2403
2404                 /* For now we just don't re-use anything.  We can tweak this
2405                  * later to try and re-use notification packets and SKBs that
2406                  * fail to Rx correctly */
2407                 if (rxb->skb != NULL) {
2408                         priv->alloc_rxb_skb--;
2409                         dev_kfree_skb_any(rxb->skb);
2410                         rxb->skb = NULL;
2411                 }
2412
2413                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2414                                  priv->hw_params.rx_buf_size,
2415                                  PCI_DMA_FROMDEVICE);
2416                 spin_lock_irqsave(&rxq->lock, flags);
2417                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2418                 spin_unlock_irqrestore(&rxq->lock, flags);
2419                 i = (i + 1) & RX_QUEUE_MASK;
2420                 /* If there are a lot of unused frames,
2421                  * restock the Rx queue so ucode wont assert. */
2422                 if (fill_rx) {
2423                         count++;
2424                         if (count >= 8) {
2425                                 priv->rxq.read = i;
2426                                 __iwl_rx_replenish(priv);
2427                                 count = 0;
2428                         }
2429                 }
2430         }
2431
2432         /* Backtrack one entry */
2433         priv->rxq.read = i;
2434         iwl_rx_queue_restock(priv);
2435 }
2436 /* Convert linear signal-to-noise ratio into dB */
2437 static u8 ratio2dB[100] = {
2438 /*       0   1   2   3   4   5   6   7   8   9 */
2439          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2440         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2441         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2442         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2443         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2444         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2445         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2446         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2447         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2448         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2449 };
2450
2451 /* Calculates a relative dB value from a ratio of linear
2452  *   (i.e. not dB) signal levels.
2453  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2454 int iwl4965_calc_db_from_ratio(int sig_ratio)
2455 {
2456         /* 1000:1 or higher just report as 60 dB */
2457         if (sig_ratio >= 1000)
2458                 return 60;
2459
2460         /* 100:1 or higher, divide by 10 and use table,
2461          *   add 20 dB to make up for divide by 10 */
2462         if (sig_ratio >= 100)
2463                 return (20 + (int)ratio2dB[sig_ratio/10]);
2464
2465         /* We shouldn't see this */
2466         if (sig_ratio < 1)
2467                 return 0;
2468
2469         /* Use table for ratios 1:1 - 99:1 */
2470         return (int)ratio2dB[sig_ratio];
2471 }
2472
2473 #define PERFECT_RSSI (-20) /* dBm */
2474 #define WORST_RSSI (-95)   /* dBm */
2475 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2476
2477 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2478  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2479  *   about formulas used below. */
2480 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2481 {
2482         int sig_qual;
2483         int degradation = PERFECT_RSSI - rssi_dbm;
2484
2485         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2486          * as indicator; formula is (signal dbm - noise dbm).
2487          * SNR at or above 40 is a great signal (100%).
2488          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2489          * Weakest usable signal is usually 10 - 15 dB SNR. */
2490         if (noise_dbm) {
2491                 if (rssi_dbm - noise_dbm >= 40)
2492                         return 100;
2493                 else if (rssi_dbm < noise_dbm)
2494                         return 0;
2495                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2496
2497         /* Else use just the signal level.
2498          * This formula is a least squares fit of data points collected and
2499          *   compared with a reference system that had a percentage (%) display
2500          *   for signal quality. */
2501         } else
2502                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2503                             (15 * RSSI_RANGE + 62 * degradation)) /
2504                            (RSSI_RANGE * RSSI_RANGE);
2505
2506         if (sig_qual > 100)
2507                 sig_qual = 100;
2508         else if (sig_qual < 1)
2509                 sig_qual = 0;
2510
2511         return sig_qual;
2512 }
2513
2514 #ifdef CONFIG_IWLWIFI_DEBUG
2515 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2516 {
2517         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2518         DECLARE_MAC_BUF(mac);
2519
2520         IWL_DEBUG_RADIO("RX CONFIG:\n");
2521         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2522         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2523         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2524         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2525                         le32_to_cpu(rxon->filter_flags));
2526         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2527         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2528                         rxon->ofdm_basic_rates);
2529         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2530         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2531                         print_mac(mac, rxon->node_addr));
2532         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2533                         print_mac(mac, rxon->bssid_addr));
2534         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2535 }
2536 #endif
2537
2538 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2539 {
2540         IWL_DEBUG_ISR("Enabling interrupts\n");
2541         set_bit(STATUS_INT_ENABLED, &priv->status);
2542         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2543 }
2544
2545 /* call this function to flush any scheduled tasklet */
2546 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2547 {
2548         /* wait to make sure we flush pedding tasklet*/
2549         synchronize_irq(priv->pci_dev->irq);
2550         tasklet_kill(&priv->irq_tasklet);
2551 }
2552
2553 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2554 {
2555         clear_bit(STATUS_INT_ENABLED, &priv->status);
2556
2557         /* disable interrupts from uCode/NIC to host */
2558         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2559
2560         /* acknowledge/clear/reset any interrupts still pending
2561          * from uCode or flow handler (Rx/Tx DMA) */
2562         iwl_write32(priv, CSR_INT, 0xffffffff);
2563         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2564         IWL_DEBUG_ISR("Disabled interrupts\n");
2565 }
2566
2567
2568 /**
2569  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2570  */
2571 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2572 {
2573         /* Set the FW error flag -- cleared on iwl4965_down */
2574         set_bit(STATUS_FW_ERROR, &priv->status);
2575
2576         /* Cancel currently queued command. */
2577         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2578
2579 #ifdef CONFIG_IWLWIFI_DEBUG
2580         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2581                 iwl_dump_nic_error_log(priv);
2582                 iwl_dump_nic_event_log(priv);
2583                 iwl4965_print_rx_config_cmd(priv);
2584         }
2585 #endif
2586
2587         wake_up_interruptible(&priv->wait_command_queue);
2588
2589         /* Keep the restart process from trying to send host
2590          * commands by clearing the INIT status bit */
2591         clear_bit(STATUS_READY, &priv->status);
2592
2593         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2594                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2595                           "Restarting adapter due to uCode error.\n");
2596
2597                 if (iwl_is_associated(priv)) {
2598                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2599                                sizeof(priv->recovery_rxon));
2600                         priv->error_recovering = 1;
2601                 }
2602                 if (priv->cfg->mod_params->restart_fw)
2603                         queue_work(priv->workqueue, &priv->restart);
2604         }
2605 }
2606
2607 static void iwl4965_error_recovery(struct iwl_priv *priv)
2608 {
2609         unsigned long flags;
2610
2611         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2612                sizeof(priv->staging_rxon));
2613         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2614         iwl4965_commit_rxon(priv);
2615
2616         iwl_rxon_add_station(priv, priv->bssid, 1);
2617
2618         spin_lock_irqsave(&priv->lock, flags);
2619         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2620         priv->error_recovering = 0;
2621         spin_unlock_irqrestore(&priv->lock, flags);
2622 }
2623
2624 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2625 {
2626         u32 inta, handled = 0;
2627         u32 inta_fh;
2628         unsigned long flags;
2629 #ifdef CONFIG_IWLWIFI_DEBUG
2630         u32 inta_mask;
2631 #endif
2632
2633         spin_lock_irqsave(&priv->lock, flags);
2634
2635         /* Ack/clear/reset pending uCode interrupts.
2636          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2637          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2638         inta = iwl_read32(priv, CSR_INT);
2639         iwl_write32(priv, CSR_INT, inta);
2640
2641         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2642          * Any new interrupts that happen after this, either while we're
2643          * in this tasklet, or later, will show up in next ISR/tasklet. */
2644         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2645         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2646
2647 #ifdef CONFIG_IWLWIFI_DEBUG
2648         if (priv->debug_level & IWL_DL_ISR) {
2649                 /* just for debug */
2650                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2651                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2652                               inta, inta_mask, inta_fh);
2653         }
2654 #endif
2655
2656         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2657          * atomic, make sure that inta covers all the interrupts that
2658          * we've discovered, even if FH interrupt came in just after
2659          * reading CSR_INT. */
2660         if (inta_fh & CSR49_FH_INT_RX_MASK)
2661                 inta |= CSR_INT_BIT_FH_RX;
2662         if (inta_fh & CSR49_FH_INT_TX_MASK)
2663                 inta |= CSR_INT_BIT_FH_TX;
2664
2665         /* Now service all interrupt bits discovered above. */
2666         if (inta & CSR_INT_BIT_HW_ERR) {
2667                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2668
2669                 /* Tell the device to stop sending interrupts */
2670                 iwl4965_disable_interrupts(priv);
2671
2672                 iwl4965_irq_handle_error(priv);
2673
2674                 handled |= CSR_INT_BIT_HW_ERR;
2675
2676                 spin_unlock_irqrestore(&priv->lock, flags);
2677
2678                 return;
2679         }
2680
2681 #ifdef CONFIG_IWLWIFI_DEBUG
2682         if (priv->debug_level & (IWL_DL_ISR)) {
2683                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2684                 if (inta & CSR_INT_BIT_SCD)
2685                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2686                                       "the frame/frames.\n");
2687
2688                 /* Alive notification via Rx interrupt will do the real work */
2689                 if (inta & CSR_INT_BIT_ALIVE)
2690                         IWL_DEBUG_ISR("Alive interrupt\n");
2691         }
2692 #endif
2693         /* Safely ignore these bits for debug checks below */
2694         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2695
2696         /* HW RF KILL switch toggled */
2697         if (inta & CSR_INT_BIT_RF_KILL) {
2698                 int hw_rf_kill = 0;
2699                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2700                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2701                         hw_rf_kill = 1;
2702
2703                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2704                                 hw_rf_kill ? "disable radio":"enable radio");
2705
2706                 /* Queue restart only if RF_KILL switch was set to "kill"
2707                  *   when we loaded driver, and is now set to "enable".
2708                  * After we're Alive, RF_KILL gets handled by
2709                  *   iwl4965_rx_card_state_notif() */
2710                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2711                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2712                         queue_work(priv->workqueue, &priv->restart);
2713                 }
2714
2715                 handled |= CSR_INT_BIT_RF_KILL;
2716         }
2717
2718         /* Chip got too hot and stopped itself */
2719         if (inta & CSR_INT_BIT_CT_KILL) {
2720                 IWL_ERROR("Microcode CT kill error detected.\n");
2721                 handled |= CSR_INT_BIT_CT_KILL;
2722         }
2723
2724         /* Error detected by uCode */
2725         if (inta & CSR_INT_BIT_SW_ERR) {
2726                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2727                           inta);
2728                 iwl4965_irq_handle_error(priv);
2729                 handled |= CSR_INT_BIT_SW_ERR;
2730         }
2731
2732         /* uCode wakes up after power-down sleep */
2733         if (inta & CSR_INT_BIT_WAKEUP) {
2734                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2735                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2736                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2737                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2738                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2739                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2740                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2741                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2742
2743                 handled |= CSR_INT_BIT_WAKEUP;
2744         }
2745
2746         /* All uCode command responses, including Tx command responses,
2747          * Rx "responses" (frame-received notification), and other
2748          * notifications from uCode come through here*/
2749         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2750                 iwl_rx_handle(priv);
2751                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2752         }
2753
2754         if (inta & CSR_INT_BIT_FH_TX) {
2755                 IWL_DEBUG_ISR("Tx interrupt\n");
2756                 handled |= CSR_INT_BIT_FH_TX;
2757                 /* FH finished to write, send event */
2758                 priv->ucode_write_complete = 1;
2759                 wake_up_interruptible(&priv->wait_command_queue);
2760         }
2761
2762         if (inta & ~handled)
2763                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2764
2765         if (inta & ~CSR_INI_SET_MASK) {
2766                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2767                          inta & ~CSR_INI_SET_MASK);
2768                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2769         }
2770
2771         /* Re-enable all interrupts */
2772         /* only Re-enable if diabled by irq */
2773         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2774                 iwl4965_enable_interrupts(priv);
2775
2776 #ifdef CONFIG_IWLWIFI_DEBUG
2777         if (priv->debug_level & (IWL_DL_ISR)) {
2778                 inta = iwl_read32(priv, CSR_INT);
2779                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2780                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2781                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2782                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2783         }
2784 #endif
2785         spin_unlock_irqrestore(&priv->lock, flags);
2786 }
2787
2788 static irqreturn_t iwl4965_isr(int irq, void *data)
2789 {
2790         struct iwl_priv *priv = data;
2791         u32 inta, inta_mask;
2792         u32 inta_fh;
2793         if (!priv)
2794                 return IRQ_NONE;
2795
2796         spin_lock(&priv->lock);
2797
2798         /* Disable (but don't clear!) interrupts here to avoid
2799          *    back-to-back ISRs and sporadic interrupts from our NIC.
2800          * If we have something to service, the tasklet will re-enable ints.
2801          * If we *don't* have something, we'll re-enable before leaving here. */
2802         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2803         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2804
2805         /* Discover which interrupts are active/pending */
2806         inta = iwl_read32(priv, CSR_INT);
2807         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2808
2809         /* Ignore interrupt if there's nothing in NIC to service.
2810          * This may be due to IRQ shared with another device,
2811          * or due to sporadic interrupts thrown from our NIC. */
2812         if (!inta && !inta_fh) {
2813                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2814                 goto none;
2815         }
2816
2817         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2818                 /* Hardware disappeared. It might have already raised
2819                  * an interrupt */
2820                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2821                 goto unplugged;
2822         }
2823
2824         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2825                       inta, inta_mask, inta_fh);
2826
2827         inta &= ~CSR_INT_BIT_SCD;
2828
2829         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2830         if (likely(inta || inta_fh))
2831                 tasklet_schedule(&priv->irq_tasklet);
2832
2833  unplugged:
2834         spin_unlock(&priv->lock);
2835         return IRQ_HANDLED;
2836
2837  none:
2838         /* re-enable interrupts here since we don't have anything to service. */
2839         /* only Re-enable if diabled by irq */
2840         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2841                 iwl4965_enable_interrupts(priv);
2842         spin_unlock(&priv->lock);
2843         return IRQ_NONE;
2844 }
2845
2846 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2847  * sending probe req.  This should be set long enough to hear probe responses
2848  * from more than one AP.  */
2849 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2850 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2851
2852 /* For faster active scanning, scan will move to the next channel if fewer than
2853  * PLCP_QUIET_THRESH packets are heard on this channel within
2854  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2855  * time if it's a quiet channel (nothing responded to our probe, and there's
2856  * no other traffic).
2857  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2858 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2859 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2860
2861 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2862  * Must be set longer than active dwell time.
2863  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2864 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2865 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2866 #define IWL_PASSIVE_DWELL_BASE      (100)
2867 #define IWL_CHANNEL_TUNE_TIME       5
2868
2869 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2870                                                 enum ieee80211_band band)
2871 {
2872         if (band == IEEE80211_BAND_5GHZ)
2873                 return IWL_ACTIVE_DWELL_TIME_52;
2874         else
2875                 return IWL_ACTIVE_DWELL_TIME_24;
2876 }
2877
2878 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2879                                           enum ieee80211_band band)
2880 {
2881         u16 active = iwl4965_get_active_dwell_time(priv, band);
2882         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2883             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2884             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2885
2886         if (iwl_is_associated(priv)) {
2887                 /* If we're associated, we clamp the maximum passive
2888                  * dwell time to be 98% of the beacon interval (minus
2889                  * 2 * channel tune time) */
2890                 passive = priv->beacon_int;
2891                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2892                         passive = IWL_PASSIVE_DWELL_BASE;
2893                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2894         }
2895
2896         if (passive <= active)
2897                 passive = active + 1;
2898
2899         return passive;
2900 }
2901
2902 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2903                                          enum ieee80211_band band,
2904                                      u8 is_active, u8 direct_mask,
2905                                      struct iwl4965_scan_channel *scan_ch)
2906 {
2907         const struct ieee80211_channel *channels = NULL;
2908         const struct ieee80211_supported_band *sband;
2909         const struct iwl_channel_info *ch_info;
2910         u16 passive_dwell = 0;
2911         u16 active_dwell = 0;
2912         int added, i;
2913
2914         sband = iwl_get_hw_mode(priv, band);
2915         if (!sband)
2916                 return 0;
2917
2918         channels = sband->channels;
2919
2920         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2921         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2922
2923         for (i = 0, added = 0; i < sband->n_channels; i++) {
2924                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2925                         continue;
2926
2927                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2928
2929                 ch_info = iwl_get_channel_info(priv, band,
2930                                          scan_ch->channel);
2931                 if (!is_channel_valid(ch_info)) {
2932                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2933                                        scan_ch->channel);
2934                         continue;
2935                 }
2936
2937                 if (!is_active || is_channel_passive(ch_info) ||
2938                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2939                         scan_ch->type = 0;      /* passive */
2940                 else
2941                         scan_ch->type = 1;      /* active */
2942
2943                 if (scan_ch->type & 1)
2944                         scan_ch->type |= (direct_mask << 1);
2945
2946                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2947                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2948
2949                 /* Set txpower levels to defaults */
2950                 scan_ch->tpc.dsp_atten = 110;
2951                 /* scan_pwr_info->tpc.dsp_atten; */
2952
2953                 /*scan_pwr_info->tpc.tx_gain; */
2954                 if (band == IEEE80211_BAND_5GHZ)
2955                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2956                 else {
2957                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2958                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2959                          * power level:
2960                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2961                          */
2962                 }
2963
2964                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2965                                scan_ch->channel,
2966                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2967                                (scan_ch->type & 1) ?
2968                                active_dwell : passive_dwell);
2969
2970                 scan_ch++;
2971                 added++;
2972         }
2973
2974         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2975         return added;
2976 }
2977
2978 /******************************************************************************
2979  *
2980  * uCode download functions
2981  *
2982  ******************************************************************************/
2983
2984 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2985 {
2986         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2987         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2988         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2989         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2990         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2991         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2992 }
2993
2994 static void iwl4965_nic_start(struct iwl_priv *priv)
2995 {
2996         /* Remove all resets to allow NIC to operate */
2997         iwl_write32(priv, CSR_RESET, 0);
2998 }
2999
3000
3001 /**
3002  * iwl4965_read_ucode - Read uCode images from disk file.
3003  *
3004  * Copy into buffers for card to fetch via bus-mastering
3005  */
3006 static int iwl4965_read_ucode(struct iwl_priv *priv)
3007 {
3008         struct iwl4965_ucode *ucode;
3009         int ret;
3010         const struct firmware *ucode_raw;
3011         const char *name = priv->cfg->fw_name;
3012         u8 *src;
3013         size_t len;
3014         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3015
3016         /* Ask kernel firmware_class module to get the boot firmware off disk.
3017          * request_firmware() is synchronous, file is in memory on return. */
3018         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3019         if (ret < 0) {
3020                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3021                                         name, ret);
3022                 goto error;
3023         }
3024
3025         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3026                        name, ucode_raw->size);
3027
3028         /* Make sure that we got at least our header! */
3029         if (ucode_raw->size < sizeof(*ucode)) {
3030                 IWL_ERROR("File size way too small!\n");
3031                 ret = -EINVAL;
3032                 goto err_release;
3033         }
3034
3035         /* Data from ucode file:  header followed by uCode images */
3036         ucode = (void *)ucode_raw->data;
3037
3038         ver = le32_to_cpu(ucode->ver);
3039         inst_size = le32_to_cpu(ucode->inst_size);
3040         data_size = le32_to_cpu(ucode->data_size);
3041         init_size = le32_to_cpu(ucode->init_size);
3042         init_data_size = le32_to_cpu(ucode->init_data_size);
3043         boot_size = le32_to_cpu(ucode->boot_size);
3044
3045         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3046         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3047                        inst_size);
3048         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3049                        data_size);
3050         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3051                        init_size);
3052         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3053                        init_data_size);
3054         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3055                        boot_size);
3056
3057         /* Verify size of file vs. image size info in file's header */
3058         if (ucode_raw->size < sizeof(*ucode) +
3059                 inst_size + data_size + init_size +
3060                 init_data_size + boot_size) {
3061
3062                 IWL_DEBUG_INFO("uCode file size %d too small\n",
3063                                (int)ucode_raw->size);
3064                 ret = -EINVAL;
3065                 goto err_release;
3066         }
3067
3068         /* Verify that uCode images will fit in card's SRAM */
3069         if (inst_size > priv->hw_params.max_inst_size) {
3070                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3071                                inst_size);
3072                 ret = -EINVAL;
3073                 goto err_release;
3074         }
3075
3076         if (data_size > priv->hw_params.max_data_size) {
3077                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3078                                 data_size);
3079                 ret = -EINVAL;
3080                 goto err_release;
3081         }
3082         if (init_size > priv->hw_params.max_inst_size) {
3083                 IWL_DEBUG_INFO
3084                     ("uCode init instr len %d too large to fit in\n",
3085                       init_size);
3086                 ret = -EINVAL;
3087                 goto err_release;
3088         }
3089         if (init_data_size > priv->hw_params.max_data_size) {
3090                 IWL_DEBUG_INFO
3091                     ("uCode init data len %d too large to fit in\n",
3092                       init_data_size);
3093                 ret = -EINVAL;
3094                 goto err_release;
3095         }
3096         if (boot_size > priv->hw_params.max_bsm_size) {
3097                 IWL_DEBUG_INFO
3098                     ("uCode boot instr len %d too large to fit in\n",
3099                       boot_size);
3100                 ret = -EINVAL;
3101                 goto err_release;
3102         }
3103
3104         /* Allocate ucode buffers for card's bus-master loading ... */
3105
3106         /* Runtime instructions and 2 copies of data:
3107          * 1) unmodified from disk
3108          * 2) backup cache for save/restore during power-downs */
3109         priv->ucode_code.len = inst_size;
3110         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3111
3112         priv->ucode_data.len = data_size;
3113         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3114
3115         priv->ucode_data_backup.len = data_size;
3116         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3117
3118         /* Initialization instructions and data */
3119         if (init_size && init_data_size) {
3120                 priv->ucode_init.len = init_size;
3121                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3122
3123                 priv->ucode_init_data.len = init_data_size;
3124                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3125
3126                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3127                         goto err_pci_alloc;
3128         }
3129
3130         /* Bootstrap (instructions only, no data) */
3131         if (boot_size) {
3132                 priv->ucode_boot.len = boot_size;
3133                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3134
3135                 if (!priv->ucode_boot.v_addr)
3136                         goto err_pci_alloc;
3137         }
3138
3139         /* Copy images into buffers for card's bus-master reads ... */
3140
3141         /* Runtime instructions (first block of data in file) */
3142         src = &ucode->data[0];
3143         len = priv->ucode_code.len;
3144         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3145         memcpy(priv->ucode_code.v_addr, src, len);
3146         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3147                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3148
3149         /* Runtime data (2nd block)
3150          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
3151         src = &ucode->data[inst_size];
3152         len = priv->ucode_data.len;
3153         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3154         memcpy(priv->ucode_data.v_addr, src, len);
3155         memcpy(priv->ucode_data_backup.v_addr, src, len);
3156
3157         /* Initialization instructions (3rd block) */
3158         if (init_size) {
3159                 src = &ucode->data[inst_size + data_size];
3160                 len = priv->ucode_init.len;
3161                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3162                                 len);
3163                 memcpy(priv->ucode_init.v_addr, src, len);
3164         }
3165
3166         /* Initialization data (4th block) */
3167         if (init_data_size) {
3168                 src = &ucode->data[inst_size + data_size + init_size];
3169                 len = priv->ucode_init_data.len;
3170                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3171                                len);
3172                 memcpy(priv->ucode_init_data.v_addr, src, len);
3173         }
3174
3175         /* Bootstrap instructions (5th block) */
3176         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3177         len = priv->ucode_boot.len;
3178         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
3179         memcpy(priv->ucode_boot.v_addr, src, len);
3180
3181         /* We have our copies now, allow OS release its copies */
3182         release_firmware(ucode_raw);
3183         return 0;
3184
3185  err_pci_alloc:
3186         IWL_ERROR("failed to allocate pci memory\n");
3187         ret = -ENOMEM;
3188         iwl4965_dealloc_ucode_pci(priv);
3189
3190  err_release:
3191         release_firmware(ucode_raw);
3192
3193  error:
3194         return ret;
3195 }
3196
3197 /**
3198  * iwl_alive_start - called after REPLY_ALIVE notification received
3199  *                   from protocol/runtime uCode (initialization uCode's
3200  *                   Alive gets handled by iwl_init_alive_start()).
3201  */
3202 static void iwl_alive_start(struct iwl_priv *priv)
3203 {
3204         int ret = 0;
3205
3206         IWL_DEBUG_INFO("Runtime Alive received.\n");
3207
3208         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3209                 /* We had an error bringing up the hardware, so take it
3210                  * all the way back down so we can try again */
3211                 IWL_DEBUG_INFO("Alive failed.\n");
3212                 goto restart;
3213         }
3214
3215         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3216          * This is a paranoid check, because we would not have gotten the
3217          * "runtime" alive if code weren't properly loaded.  */
3218         if (iwl_verify_ucode(priv)) {
3219                 /* Runtime instruction load was bad;
3220                  * take it all the way back down so we can try again */
3221                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3222                 goto restart;
3223         }
3224
3225         iwlcore_clear_stations_table(priv);
3226         ret = priv->cfg->ops->lib->alive_notify(priv);
3227         if (ret) {
3228                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
3229                             ret);
3230                 goto restart;
3231         }
3232
3233         /* After the ALIVE response, we can send host commands to 4965 uCode */
3234         set_bit(STATUS_ALIVE, &priv->status);
3235
3236         /* Clear out the uCode error bit if it is set */
3237         clear_bit(STATUS_FW_ERROR, &priv->status);
3238
3239         if (iwl_is_rfkill(priv))
3240                 return;
3241
3242         ieee80211_wake_queues(priv->hw);
3243
3244         priv->active_rate = priv->rates_mask;
3245         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3246
3247         if (iwl_is_associated(priv)) {
3248                 struct iwl_rxon_cmd *active_rxon =
3249                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
3250
3251                 memcpy(&priv->staging_rxon, &priv->active_rxon,
3252                        sizeof(priv->staging_rxon));
3253                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3254         } else {
3255                 /* Initialize our rx_config data */
3256                 iwl4965_connection_init_rx_config(priv);
3257                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
3258         }
3259
3260         /* Configure Bluetooth device coexistence support */
3261         iwl4965_send_bt_config(priv);
3262
3263         iwl_reset_run_time_calib(priv);
3264
3265         /* Configure the adapter for unassociated operation */
3266         iwl4965_commit_rxon(priv);
3267
3268         /* At this point, the NIC is initialized and operational */
3269         iwl4965_rf_kill_ct_config(priv);
3270
3271         iwl_leds_register(priv);
3272
3273         IWL_DEBUG_INFO("ALIVE processing complete.\n");
3274         set_bit(STATUS_READY, &priv->status);
3275         wake_up_interruptible(&priv->wait_command_queue);
3276
3277         if (priv->error_recovering)
3278                 iwl4965_error_recovery(priv);
3279
3280         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
3281         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
3282         return;
3283
3284  restart:
3285         queue_work(priv->workqueue, &priv->restart);
3286 }
3287
3288 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
3289
3290 static void __iwl4965_down(struct iwl_priv *priv)
3291 {
3292         unsigned long flags;
3293         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3294
3295         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3296
3297         if (!exit_pending)
3298                 set_bit(STATUS_EXIT_PENDING, &priv->status);
3299
3300         iwl_leds_unregister(priv);
3301
3302         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3303
3304         iwlcore_clear_stations_table(priv);
3305
3306         /* Unblock any waiting calls */
3307         wake_up_interruptible_all(&priv->wait_command_queue);
3308
3309         /* Wipe out the EXIT_PENDING status bit if we are not actually
3310          * exiting the module */
3311         if (!exit_pending)
3312                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3313
3314         /* stop and reset the on-board processor */
3315         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3316
3317         /* tell the device to stop sending interrupts */
3318         spin_lock_irqsave(&priv->lock, flags);
3319         iwl4965_disable_interrupts(priv);
3320         spin_unlock_irqrestore(&priv->lock, flags);
3321         iwl_synchronize_irq(priv);
3322
3323         if (priv->mac80211_registered)
3324                 ieee80211_stop_queues(priv->hw);
3325
3326         /* If we have not previously called iwl4965_init() then
3327          * clear all bits but the RF Kill and SUSPEND bits and return */
3328         if (!iwl_is_init(priv)) {
3329                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3330                                         STATUS_RF_KILL_HW |
3331                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3332                                         STATUS_RF_KILL_SW |
3333                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3334                                         STATUS_GEO_CONFIGURED |
3335                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3336                                         STATUS_IN_SUSPEND;
3337                 goto exit;
3338         }
3339
3340         /* ...otherwise clear out all the status bits but the RF Kill and
3341          * SUSPEND bits and continue taking the NIC down. */
3342         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3343                                 STATUS_RF_KILL_HW |
3344                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3345                                 STATUS_RF_KILL_SW |
3346                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3347                                 STATUS_GEO_CONFIGURED |
3348                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3349                                 STATUS_IN_SUSPEND |
3350                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3351                                 STATUS_FW_ERROR;
3352
3353         spin_lock_irqsave(&priv->lock, flags);
3354         iwl_clear_bit(priv, CSR_GP_CNTRL,
3355                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3356         spin_unlock_irqrestore(&priv->lock, flags);
3357
3358         iwl_txq_ctx_stop(priv);
3359         iwl_rxq_stop(priv);
3360
3361         spin_lock_irqsave(&priv->lock, flags);
3362         if (!iwl_grab_nic_access(priv)) {
3363                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3364                                          APMG_CLK_VAL_DMA_CLK_RQT);
3365                 iwl_release_nic_access(priv);
3366         }
3367         spin_unlock_irqrestore(&priv->lock, flags);
3368
3369         udelay(5);
3370
3371         /* FIXME: apm_ops.suspend(priv) */
3372         priv->cfg->ops->lib->apm_ops.reset(priv);
3373         priv->cfg->ops->lib->free_shared_mem(priv);
3374
3375  exit:
3376         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3377
3378         if (priv->ibss_beacon)
3379                 dev_kfree_skb(priv->ibss_beacon);
3380         priv->ibss_beacon = NULL;
3381
3382         /* clear out any free frames */
3383         iwl_clear_free_frames(priv);
3384 }
3385
3386 static void iwl4965_down(struct iwl_priv *priv)
3387 {
3388         mutex_lock(&priv->mutex);
3389         __iwl4965_down(priv);
3390         mutex_unlock(&priv->mutex);
3391
3392         iwl4965_cancel_deferred_work(priv);
3393 }
3394
3395 #define MAX_HW_RESTARTS 5
3396
3397 static int __iwl4965_up(struct iwl_priv *priv)
3398 {
3399         int i;
3400         int ret;
3401
3402         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3403                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3404                 return -EIO;
3405         }
3406
3407         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3408                 IWL_WARNING("Radio disabled by SW RF kill (module "
3409                             "parameter)\n");
3410                 iwl_rfkill_set_hw_state(priv);
3411                 return -ENODEV;
3412         }
3413
3414         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3415                 IWL_ERROR("ucode not available for device bringup\n");
3416                 return -EIO;
3417         }
3418
3419         /* If platform's RF_KILL switch is NOT set to KILL */
3420         if (iwl_read32(priv, CSR_GP_CNTRL) &
3421                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3422                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3423         else {
3424                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3425                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3426                         iwl_rfkill_set_hw_state(priv);
3427                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3428                         return -ENODEV;
3429                 }
3430         }
3431
3432         iwl_rfkill_set_hw_state(priv);
3433         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3434
3435         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3436         if (ret) {
3437                 IWL_ERROR("Unable to allocate shared memory\n");
3438                 return ret;
3439         }
3440
3441         ret = iwl_hw_nic_init(priv);
3442         if (ret) {
3443                 IWL_ERROR("Unable to init nic\n");
3444                 return ret;
3445         }
3446
3447         /* make sure rfkill handshake bits are cleared */
3448         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3449         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3450                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3451
3452         /* clear (again), then enable host interrupts */
3453         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3454         iwl4965_enable_interrupts(priv);
3455
3456         /* really make sure rfkill handshake bits are cleared */
3457         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3458         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3459
3460         /* Copy original ucode data image from disk into backup cache.
3461          * This will be used to initialize the on-board processor's
3462          * data SRAM for a clean start when the runtime program first loads. */
3463         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3464                priv->ucode_data.len);
3465
3466         /* We return success when we resume from suspend and rf_kill is on. */
3467         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3468                 return 0;
3469
3470         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3471
3472                 iwlcore_clear_stations_table(priv);
3473
3474                 /* load bootstrap state machine,
3475                  * load bootstrap program into processor's memory,
3476                  * prepare to load the "initialize" uCode */
3477                 ret = priv->cfg->ops->lib->load_ucode(priv);
3478
3479                 if (ret) {
3480                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3481                         continue;
3482                 }
3483
3484                 /* start card; "initialize" will load runtime ucode */
3485                 iwl4965_nic_start(priv);
3486
3487                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3488
3489                 return 0;
3490         }
3491
3492         set_bit(STATUS_EXIT_PENDING, &priv->status);
3493         __iwl4965_down(priv);
3494
3495         /* tried to restart and config the device for as long as our
3496          * patience could withstand */
3497         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3498         return -EIO;
3499 }
3500
3501
3502 /*****************************************************************************
3503  *
3504  * Workqueue callbacks
3505  *
3506  *****************************************************************************/
3507
3508 static void iwl_bg_init_alive_start(struct work_struct *data)
3509 {
3510         struct iwl_priv *priv =
3511             container_of(data, struct iwl_priv, init_alive_start.work);
3512
3513         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3514                 return;
3515
3516         mutex_lock(&priv->mutex);
3517         priv->cfg->ops->lib->init_alive_start(priv);
3518         mutex_unlock(&priv->mutex);
3519 }
3520
3521 static void iwl_bg_alive_start(struct work_struct *data)
3522 {
3523         struct iwl_priv *priv =
3524             container_of(data, struct iwl_priv, alive_start.work);
3525
3526         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3527                 return;
3528
3529         mutex_lock(&priv->mutex);
3530         iwl_alive_start(priv);
3531         mutex_unlock(&priv->mutex);
3532 }
3533
3534 static void iwl4965_bg_rf_kill(struct work_struct *work)
3535 {
3536         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3537
3538         wake_up_interruptible(&priv->wait_command_queue);
3539
3540         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3541                 return;
3542
3543         mutex_lock(&priv->mutex);
3544
3545         if (!iwl_is_rfkill(priv)) {
3546                 IWL_DEBUG(IWL_DL_RF_KILL,
3547                           "HW and/or SW RF Kill no longer active, restarting "
3548                           "device\n");
3549                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3550                         queue_work(priv->workqueue, &priv->restart);
3551         } else {
3552                 /* make sure mac80211 stop sending Tx frame */
3553                 if (priv->mac80211_registered)
3554                         ieee80211_stop_queues(priv->hw);
3555
3556                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3557                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3558                                           "disabled by SW switch\n");
3559                 else
3560                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3561                                     "Kill switch must be turned off for "
3562                                     "wireless networking to work.\n");
3563         }
3564         iwl_rfkill_set_hw_state(priv);
3565
3566         mutex_unlock(&priv->mutex);
3567 }
3568
3569 static void iwl4965_bg_set_monitor(struct work_struct *work)
3570 {
3571         struct iwl_priv *priv = container_of(work,
3572                                 struct iwl_priv, set_monitor);
3573
3574         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3575
3576         mutex_lock(&priv->mutex);
3577
3578         if (!iwl_is_ready(priv))
3579                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3580         else
3581                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3582                         IWL_ERROR("iwl4965_set_mode() failed\n");
3583
3584         mutex_unlock(&priv->mutex);
3585 }
3586
3587 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3588
3589 static void iwl4965_bg_scan_check(struct work_struct *data)
3590 {
3591         struct iwl_priv *priv =
3592             container_of(data, struct iwl_priv, scan_check.work);
3593
3594         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3595                 return;
3596
3597         mutex_lock(&priv->mutex);
3598         if (test_bit(STATUS_SCANNING, &priv->status) ||
3599             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3600                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3601                         "adapter (%dms)\n",
3602                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3603
3604                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3605                         iwl4965_send_scan_abort(priv);
3606         }
3607         mutex_unlock(&priv->mutex);
3608 }
3609
3610 static void iwl4965_bg_request_scan(struct work_struct *data)
3611 {
3612         struct iwl_priv *priv =
3613             container_of(data, struct iwl_priv, request_scan);
3614         struct iwl_host_cmd cmd = {
3615                 .id = REPLY_SCAN_CMD,
3616                 .len = sizeof(struct iwl4965_scan_cmd),
3617                 .meta.flags = CMD_SIZE_HUGE,
3618         };
3619         struct iwl4965_scan_cmd *scan;
3620         struct ieee80211_conf *conf = NULL;
3621         u16 cmd_len;
3622         enum ieee80211_band band;
3623         u8 direct_mask;
3624         int ret = 0;
3625
3626         conf = ieee80211_get_hw_conf(priv->hw);
3627
3628         mutex_lock(&priv->mutex);
3629
3630         if (!iwl_is_ready(priv)) {
3631                 IWL_WARNING("request scan called when driver not ready.\n");
3632                 goto done;
3633         }
3634
3635         /* Make sure the scan wasn't cancelled before this queued work
3636          * was given the chance to run... */
3637         if (!test_bit(STATUS_SCANNING, &priv->status))
3638                 goto done;
3639
3640         /* This should never be called or scheduled if there is currently
3641          * a scan active in the hardware. */
3642         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3643                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3644                                "Ignoring second request.\n");
3645                 ret = -EIO;
3646                 goto done;
3647         }
3648
3649         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3650                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3651                 goto done;
3652         }
3653
3654         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3655                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3656                 goto done;
3657         }
3658
3659         if (iwl_is_rfkill(priv)) {
3660                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3661                 goto done;
3662         }
3663
3664         if (!test_bit(STATUS_READY, &priv->status)) {
3665                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3666                 goto done;
3667         }
3668
3669         if (!priv->scan_bands) {
3670                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3671                 goto done;
3672         }
3673
3674         if (!priv->scan) {
3675                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3676                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3677                 if (!priv->scan) {
3678                         ret = -ENOMEM;
3679                         goto done;
3680                 }
3681         }
3682         scan = priv->scan;
3683         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3684
3685         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3686         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3687
3688         if (iwl_is_associated(priv)) {
3689                 u16 interval = 0;
3690                 u32 extra;
3691                 u32 suspend_time = 100;
3692                 u32 scan_suspend_time = 100;
3693                 unsigned long flags;
3694
3695                 IWL_DEBUG_INFO("Scanning while associated...\n");
3696
3697                 spin_lock_irqsave(&priv->lock, flags);
3698                 interval = priv->beacon_int;
3699                 spin_unlock_irqrestore(&priv->lock, flags);
3700
3701                 scan->suspend_time = 0;
3702                 scan->max_out_time = cpu_to_le32(200 * 1024);
3703                 if (!interval)
3704                         interval = suspend_time;
3705
3706                 extra = (suspend_time / interval) << 22;
3707                 scan_suspend_time = (extra |
3708                     ((suspend_time % interval) * 1024));
3709                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3710                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3711                                scan_suspend_time, interval);
3712         }
3713
3714         /* We should add the ability for user to lock to PASSIVE ONLY */
3715         if (priv->one_direct_scan) {
3716                 IWL_DEBUG_SCAN
3717                     ("Kicking off one direct scan for '%s'\n",
3718                      iwl4965_escape_essid(priv->direct_ssid,
3719                                       priv->direct_ssid_len));
3720                 scan->direct_scan[0].id = WLAN_EID_SSID;
3721                 scan->direct_scan[0].len = priv->direct_ssid_len;
3722                 memcpy(scan->direct_scan[0].ssid,
3723                        priv->direct_ssid, priv->direct_ssid_len);
3724                 direct_mask = 1;
3725         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3726                 IWL_DEBUG_SCAN
3727                   ("Kicking off one direct scan for '%s' when not associated\n",
3728                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3729                 scan->direct_scan[0].id = WLAN_EID_SSID;
3730                 scan->direct_scan[0].len = priv->essid_len;
3731                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3732                 direct_mask = 1;
3733         } else {
3734                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3735                 direct_mask = 0;
3736         }
3737
3738         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3739         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3740         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3741
3742
3743         switch (priv->scan_bands) {
3744         case 2:
3745                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3746                 scan->tx_cmd.rate_n_flags =
3747                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3748                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3749
3750                 scan->good_CRC_th = 0;
3751                 band = IEEE80211_BAND_2GHZ;
3752                 break;
3753
3754         case 1:
3755                 scan->tx_cmd.rate_n_flags =
3756                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3757                                 RATE_MCS_ANT_B_MSK);
3758                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3759                 band = IEEE80211_BAND_5GHZ;
3760                 break;
3761
3762         default:
3763                 IWL_WARNING("Invalid scan band count\n");
3764                 goto done;
3765         }
3766
3767         /* We don't build a direct scan probe request; the uCode will do
3768          * that based on the direct_mask added to each channel entry */
3769         cmd_len = iwl4965_fill_probe_req(priv, band,
3770                                         (struct ieee80211_mgmt *)scan->data,
3771                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3772
3773         scan->tx_cmd.len = cpu_to_le16(cmd_len);
3774         /* select Rx chains */
3775
3776         /* Force use of chains B and C (0x6) for scan Rx.
3777          * Avoid A (0x1) because of its off-channel reception on A-band.
3778          * MIMO is not used here, but value is required to make uCode happy. */
3779         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3780                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3781                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3782                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3783
3784         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3785                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3786
3787         if (direct_mask)
3788                 scan->channel_count =
3789                         iwl4965_get_channels_for_scan(
3790                                 priv, band, 1, /* active */
3791                                 direct_mask,
3792                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3793         else
3794                 scan->channel_count =
3795                         iwl4965_get_channels_for_scan(
3796                                 priv, band, 0, /* passive */
3797                                 direct_mask,
3798                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3799
3800         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3801                                RXON_FILTER_BCON_AWARE_MSK);
3802         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3803             scan->channel_count * sizeof(struct iwl4965_scan_channel);
3804         cmd.data = scan;
3805         scan->len = cpu_to_le16(cmd.len);
3806
3807         set_bit(STATUS_SCAN_HW, &priv->status);
3808         ret = iwl_send_cmd_sync(priv, &cmd);
3809         if (ret)
3810                 goto done;
3811
3812         queue_delayed_work(priv->workqueue, &priv->scan_check,
3813                            IWL_SCAN_CHECK_WATCHDOG);
3814
3815         mutex_unlock(&priv->mutex);
3816         return;
3817
3818  done:
3819         /* inform mac80211 scan aborted */
3820         queue_work(priv->workqueue, &priv->scan_completed);
3821         mutex_unlock(&priv->mutex);
3822 }
3823
3824 static void iwl4965_bg_up(struct work_struct *data)
3825 {
3826         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3827
3828         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3829                 return;
3830
3831         mutex_lock(&priv->mutex);
3832         __iwl4965_up(priv);
3833         mutex_unlock(&priv->mutex);
3834 }
3835
3836 static void iwl4965_bg_restart(struct work_struct *data)
3837 {
3838         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3839
3840         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3841                 return;
3842
3843         iwl4965_down(priv);
3844         queue_work(priv->workqueue, &priv->up);
3845 }
3846
3847 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3848 {
3849         struct iwl_priv *priv =
3850             container_of(data, struct iwl_priv, rx_replenish);
3851
3852         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3853                 return;
3854
3855         mutex_lock(&priv->mutex);
3856         iwl_rx_replenish(priv);
3857         mutex_unlock(&priv->mutex);
3858 }
3859
3860 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3861
3862 static void iwl4965_post_associate(struct iwl_priv *priv)
3863 {
3864         struct ieee80211_conf *conf = NULL;
3865         int ret = 0;
3866         DECLARE_MAC_BUF(mac);
3867
3868         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3869                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3870                 return;
3871         }
3872
3873         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3874                         priv->assoc_id,
3875                         print_mac(mac, priv->active_rxon.bssid_addr));
3876
3877
3878         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3879                 return;
3880
3881
3882         if (!priv->vif || !priv->is_open)
3883                 return;
3884
3885         iwl4965_scan_cancel_timeout(priv, 200);
3886
3887         conf = ieee80211_get_hw_conf(priv->hw);
3888
3889         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3890         iwl4965_commit_rxon(priv);
3891
3892         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3893         iwl4965_setup_rxon_timing(priv);
3894         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3895                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3896         if (ret)
3897                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3898                             "Attempting to continue.\n");
3899
3900         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3901
3902 #ifdef CONFIG_IWL4965_HT
3903         if (priv->current_ht_config.is_ht)
3904                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3905 #endif /* CONFIG_IWL4965_HT*/
3906         iwl_set_rxon_chain(priv);
3907         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3908
3909         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3910                         priv->assoc_id, priv->beacon_int);
3911
3912         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3913                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3914         else
3915                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3916
3917         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3918                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3919                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3920                 else
3921                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3922
3923                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3924                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3925
3926         }
3927
3928         iwl4965_commit_rxon(priv);
3929
3930         switch (priv->iw_mode) {
3931         case IEEE80211_IF_TYPE_STA:
3932                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3933                 break;
3934
3935         case IEEE80211_IF_TYPE_IBSS:
3936
3937                 /* clear out the station table */
3938                 iwlcore_clear_stations_table(priv);
3939
3940                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3941                 iwl_rxon_add_station(priv, priv->bssid, 0);
3942                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3943                 iwl4965_send_beacon_cmd(priv);
3944
3945                 break;
3946
3947         default:
3948                 IWL_ERROR("%s Should not be called in %d mode\n",
3949                                 __FUNCTION__, priv->iw_mode);
3950                 break;
3951         }
3952
3953         iwl4965_sequence_reset(priv);
3954
3955         /* Enable Rx differential gain and sensitivity calibrations */
3956         iwl_chain_noise_reset(priv);
3957         priv->start_calib = 1;
3958
3959         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3960                 priv->assoc_station_added = 1;
3961
3962         iwl4965_activate_qos(priv, 0);
3963
3964         iwl_power_update_mode(priv, 0);
3965         /* we have just associated, don't start scan too early */
3966         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3967 }
3968
3969
3970 static void iwl4965_bg_post_associate(struct work_struct *data)
3971 {
3972         struct iwl_priv *priv = container_of(data, struct iwl_priv,
3973                                              post_associate.work);
3974
3975         mutex_lock(&priv->mutex);
3976         iwl4965_post_associate(priv);
3977         mutex_unlock(&priv->mutex);
3978
3979 }
3980
3981 static void iwl4965_bg_abort_scan(struct work_struct *work)
3982 {
3983         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3984
3985         if (!iwl_is_ready(priv))
3986                 return;
3987
3988         mutex_lock(&priv->mutex);
3989
3990         set_bit(STATUS_SCAN_ABORTING, &priv->status);
3991         iwl4965_send_scan_abort(priv);
3992
3993         mutex_unlock(&priv->mutex);
3994 }
3995
3996 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3997
3998 static void iwl4965_bg_scan_completed(struct work_struct *work)
3999 {
4000         struct iwl_priv *priv =
4001             container_of(work, struct iwl_priv, scan_completed);
4002
4003         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4004
4005         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4006                 return;
4007
4008         if (test_bit(STATUS_CONF_PENDING, &priv->status))
4009                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4010
4011         ieee80211_scan_completed(priv->hw);
4012
4013         /* Since setting the TXPOWER may have been deferred while
4014          * performing the scan, fire one off */
4015         mutex_lock(&priv->mutex);
4016         iwl4965_hw_reg_send_txpower(priv);
4017         mutex_unlock(&priv->mutex);
4018 }
4019
4020 /*****************************************************************************
4021  *
4022  * mac80211 entry point functions
4023  *
4024  *****************************************************************************/
4025
4026 #define UCODE_READY_TIMEOUT     (2 * HZ)
4027
4028 static int iwl4965_mac_start(struct ieee80211_hw *hw)
4029 {
4030         struct iwl_priv *priv = hw->priv;
4031         int ret;
4032
4033         IWL_DEBUG_MAC80211("enter\n");
4034
4035         if (pci_enable_device(priv->pci_dev)) {
4036                 IWL_ERROR("Fail to pci_enable_device\n");
4037                 return -ENODEV;
4038         }
4039         pci_restore_state(priv->pci_dev);
4040         pci_enable_msi(priv->pci_dev);
4041
4042         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4043                           DRV_NAME, priv);
4044         if (ret) {
4045                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4046                 goto out_disable_msi;
4047         }
4048
4049         /* we should be verifying the device is ready to be opened */
4050         mutex_lock(&priv->mutex);
4051
4052         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
4053         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4054          * ucode filename and max sizes are card-specific. */
4055
4056         if (!priv->ucode_code.len) {
4057                 ret = iwl4965_read_ucode(priv);
4058                 if (ret) {
4059                         IWL_ERROR("Could not read microcode: %d\n", ret);
4060                         mutex_unlock(&priv->mutex);
4061                         goto out_release_irq;
4062                 }
4063         }
4064
4065         ret = __iwl4965_up(priv);
4066
4067         mutex_unlock(&priv->mutex);
4068
4069         if (ret)
4070                 goto out_release_irq;
4071
4072         IWL_DEBUG_INFO("Start UP work done.\n");
4073
4074         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4075                 return 0;
4076
4077         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4078          * mac80211 will not be run successfully. */
4079         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4080                         test_bit(STATUS_READY, &priv->status),
4081                         UCODE_READY_TIMEOUT);
4082         if (!ret) {
4083                 if (!test_bit(STATUS_READY, &priv->status)) {
4084                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4085                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
4086                         ret = -ETIMEDOUT;
4087                         goto out_release_irq;
4088                 }
4089         }
4090
4091         priv->is_open = 1;
4092         IWL_DEBUG_MAC80211("leave\n");
4093         return 0;
4094
4095 out_release_irq:
4096         free_irq(priv->pci_dev->irq, priv);
4097 out_disable_msi:
4098         pci_disable_msi(priv->pci_dev);
4099         pci_disable_device(priv->pci_dev);
4100         priv->is_open = 0;
4101         IWL_DEBUG_MAC80211("leave - failed\n");
4102         return ret;
4103 }
4104
4105 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
4106 {
4107         struct iwl_priv *priv = hw->priv;
4108
4109         IWL_DEBUG_MAC80211("enter\n");
4110
4111         if (!priv->is_open) {
4112                 IWL_DEBUG_MAC80211("leave - skip\n");
4113                 return;
4114         }
4115
4116         priv->is_open = 0;
4117
4118         if (iwl_is_ready_rf(priv)) {
4119                 /* stop mac, cancel any scan request and clear
4120                  * RXON_FILTER_ASSOC_MSK BIT
4121                  */
4122                 mutex_lock(&priv->mutex);
4123                 iwl4965_scan_cancel_timeout(priv, 100);
4124                 cancel_delayed_work(&priv->post_associate);
4125                 mutex_unlock(&priv->mutex);
4126         }
4127
4128         iwl4965_down(priv);
4129
4130         flush_workqueue(priv->workqueue);
4131         free_irq(priv->pci_dev->irq, priv);
4132         pci_disable_msi(priv->pci_dev);
4133         pci_save_state(priv->pci_dev);
4134         pci_disable_device(priv->pci_dev);
4135
4136         IWL_DEBUG_MAC80211("leave\n");
4137 }
4138
4139 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4140 {
4141         struct iwl_priv *priv = hw->priv;
4142
4143         IWL_DEBUG_MAC80211("enter\n");
4144
4145         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4146                 IWL_DEBUG_MAC80211("leave - monitor\n");
4147                 return -1;
4148         }
4149
4150         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4151                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4152
4153         if (iwl_tx_skb(priv, skb))
4154                 dev_kfree_skb_any(skb);
4155
4156         IWL_DEBUG_MAC80211("leave\n");
4157         return 0;
4158 }
4159
4160 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
4161                                  struct ieee80211_if_init_conf *conf)
4162 {
4163         struct iwl_priv *priv = hw->priv;
4164         unsigned long flags;
4165         DECLARE_MAC_BUF(mac);
4166
4167         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4168
4169         if (priv->vif) {
4170                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4171                 return -EOPNOTSUPP;
4172         }
4173
4174         spin_lock_irqsave(&priv->lock, flags);
4175         priv->vif = conf->vif;
4176
4177         spin_unlock_irqrestore(&priv->lock, flags);
4178
4179         mutex_lock(&priv->mutex);
4180
4181         if (conf->mac_addr) {
4182                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4183                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4184         }
4185
4186         if (iwl_is_ready(priv))
4187                 iwl4965_set_mode(priv, conf->type);
4188
4189         mutex_unlock(&priv->mutex);
4190
4191         IWL_DEBUG_MAC80211("leave\n");
4192         return 0;
4193 }
4194
4195 /**
4196  * iwl4965_mac_config - mac80211 config callback
4197  *
4198  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4199  * be set inappropriately and the driver currently sets the hardware up to
4200  * use it whenever needed.
4201  */
4202 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
4203 {
4204         struct iwl_priv *priv = hw->priv;
4205         const struct iwl_channel_info *ch_info;
4206         unsigned long flags;
4207         int ret = 0;
4208
4209         mutex_lock(&priv->mutex);
4210         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4211
4212         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
4213
4214         if (!iwl_is_ready(priv)) {
4215                 IWL_DEBUG_MAC80211("leave - not ready\n");
4216                 ret = -EIO;
4217                 goto out;
4218         }
4219
4220         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
4221                      test_bit(STATUS_SCANNING, &priv->status))) {
4222                 IWL_DEBUG_MAC80211("leave - scanning\n");
4223                 set_bit(STATUS_CONF_PENDING, &priv->status);
4224                 mutex_unlock(&priv->mutex);
4225                 return 0;
4226         }
4227
4228         spin_lock_irqsave(&priv->lock, flags);
4229
4230         ch_info = iwl_get_channel_info(priv, conf->channel->band,
4231                         ieee80211_frequency_to_channel(conf->channel->center_freq));
4232         if (!is_channel_valid(ch_info)) {
4233                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4234                 spin_unlock_irqrestore(&priv->lock, flags);
4235                 ret = -EINVAL;
4236                 goto out;
4237         }
4238
4239 #ifdef CONFIG_IWL4965_HT
4240         /* if we are switching from ht to 2.4 clear flags
4241          * from any ht related info since 2.4 does not
4242          * support ht */
4243         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
4244 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4245             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
4246 #endif
4247         )
4248                 priv->staging_rxon.flags = 0;
4249 #endif /* CONFIG_IWL4965_HT */
4250
4251         iwl_set_rxon_channel(priv, conf->channel->band,
4252                 ieee80211_frequency_to_channel(conf->channel->center_freq));
4253
4254         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
4255
4256         /* The list of supported rates and rate mask can be different
4257          * for each band; since the band may have changed, reset
4258          * the rate mask to what mac80211 lists */
4259         iwl4965_set_rate(priv);
4260
4261         spin_unlock_irqrestore(&priv->lock, flags);
4262
4263 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4264         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4265                 iwl4965_hw_channel_switch(priv, conf->channel);
4266                 goto out;
4267         }
4268 #endif
4269
4270         if (priv->cfg->ops->lib->radio_kill_sw)
4271                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
4272
4273         if (!conf->radio_enabled) {
4274                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4275                 goto out;
4276         }
4277
4278         if (iwl_is_rfkill(priv)) {
4279                 IWL_DEBUG_MAC80211("leave - RF kill\n");
4280                 ret = -EIO;
4281                 goto out;
4282         }
4283
4284         iwl4965_set_rate(priv);
4285
4286         if (memcmp(&priv->active_rxon,
4287                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
4288                 iwl4965_commit_rxon(priv);
4289         else
4290                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4291
4292         IWL_DEBUG_MAC80211("leave\n");
4293
4294 out:
4295         clear_bit(STATUS_CONF_PENDING, &priv->status);
4296         mutex_unlock(&priv->mutex);
4297         return ret;
4298 }
4299
4300 static void iwl4965_config_ap(struct iwl_priv *priv)
4301 {
4302         int ret = 0;
4303
4304         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4305                 return;
4306
4307         /* The following should be done only at AP bring up */
4308         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4309
4310                 /* RXON - unassoc (to set timing command) */
4311                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4312                 iwl4965_commit_rxon(priv);
4313
4314                 /* RXON Timing */
4315                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4316                 iwl4965_setup_rxon_timing(priv);
4317                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4318                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
4319                 if (ret)
4320                         IWL_WARNING("REPLY_RXON_TIMING failed - "
4321                                         "Attempting to continue.\n");
4322
4323                 iwl_set_rxon_chain(priv);
4324
4325                 /* FIXME: what should be the assoc_id for AP? */
4326                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4327                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4328                         priv->staging_rxon.flags |=
4329                                 RXON_FLG_SHORT_PREAMBLE_MSK;
4330                 else
4331                         priv->staging_rxon.flags &=
4332                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4333
4334                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4335                         if (priv->assoc_capability &
4336                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4337                                 priv->staging_rxon.flags |=
4338                                         RXON_FLG_SHORT_SLOT_MSK;
4339                         else
4340                                 priv->staging_rxon.flags &=
4341                                         ~RXON_FLG_SHORT_SLOT_MSK;
4342
4343                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4344                                 priv->staging_rxon.flags &=
4345                                         ~RXON_FLG_SHORT_SLOT_MSK;
4346                 }
4347                 /* restore RXON assoc */
4348                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4349                 iwl4965_commit_rxon(priv);
4350                 iwl4965_activate_qos(priv, 1);
4351                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4352         }
4353         iwl4965_send_beacon_cmd(priv);
4354
4355         /* FIXME - we need to add code here to detect a totally new
4356          * configuration, reset the AP, unassoc, rxon timing, assoc,
4357          * clear sta table, add BCAST sta... */
4358 }
4359
4360 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4361                                         struct ieee80211_vif *vif,
4362                                     struct ieee80211_if_conf *conf)
4363 {
4364         struct iwl_priv *priv = hw->priv;
4365         DECLARE_MAC_BUF(mac);
4366         unsigned long flags;
4367         int rc;
4368
4369         if (conf == NULL)
4370                 return -EIO;
4371
4372         if (priv->vif != vif) {
4373                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4374                 return 0;
4375         }
4376
4377         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4378             (!conf->beacon || !conf->ssid_len)) {
4379                 IWL_DEBUG_MAC80211
4380                     ("Leaving in AP mode because HostAPD is not ready.\n");
4381                 return 0;
4382         }
4383
4384         if (!iwl_is_alive(priv))
4385                 return -EAGAIN;
4386
4387         mutex_lock(&priv->mutex);
4388
4389         if (conf->bssid)
4390                 IWL_DEBUG_MAC80211("bssid: %s\n",
4391                                    print_mac(mac, conf->bssid));
4392
4393 /*
4394  * very dubious code was here; the probe filtering flag is never set:
4395  *
4396         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4397             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4398  */
4399
4400         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4401                 if (!conf->bssid) {
4402                         conf->bssid = priv->mac_addr;
4403                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4404                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4405                                            print_mac(mac, conf->bssid));
4406                 }
4407                 if (priv->ibss_beacon)
4408                         dev_kfree_skb(priv->ibss_beacon);
4409
4410                 priv->ibss_beacon = conf->beacon;
4411         }
4412
4413         if (iwl_is_rfkill(priv))
4414                 goto done;
4415
4416         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4417             !is_multicast_ether_addr(conf->bssid)) {
4418                 /* If there is currently a HW scan going on in the background
4419                  * then we need to cancel it else the RXON below will fail. */
4420                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4421                         IWL_WARNING("Aborted scan still in progress "
4422                                     "after 100ms\n");
4423                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4424                         mutex_unlock(&priv->mutex);
4425                         return -EAGAIN;
4426                 }
4427                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4428
4429                 /* TODO: Audit driver for usage of these members and see
4430                  * if mac80211 deprecates them (priv->bssid looks like it
4431                  * shouldn't be there, but I haven't scanned the IBSS code
4432                  * to verify) - jpk */
4433                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4434
4435                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4436                         iwl4965_config_ap(priv);
4437                 else {
4438                         rc = iwl4965_commit_rxon(priv);
4439                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4440                                 iwl_rxon_add_station(
4441                                         priv, priv->active_rxon.bssid_addr, 1);
4442                 }
4443
4444         } else {
4445                 iwl4965_scan_cancel_timeout(priv, 100);
4446                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4447                 iwl4965_commit_rxon(priv);
4448         }
4449
4450  done:
4451         spin_lock_irqsave(&priv->lock, flags);
4452         if (!conf->ssid_len)
4453                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4454         else
4455                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4456
4457         priv->essid_len = conf->ssid_len;
4458         spin_unlock_irqrestore(&priv->lock, flags);
4459
4460         IWL_DEBUG_MAC80211("leave\n");
4461         mutex_unlock(&priv->mutex);
4462
4463         return 0;
4464 }
4465
4466 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4467                                  unsigned int changed_flags,
4468                                  unsigned int *total_flags,
4469                                  int mc_count, struct dev_addr_list *mc_list)
4470 {
4471         /*
4472          * XXX: dummy
4473          * see also iwl4965_connection_init_rx_config
4474          */
4475         struct iwl_priv *priv = hw->priv;
4476         int new_flags = 0;
4477         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4478                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4479                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4480                                            IEEE80211_IF_TYPE_MNTR,
4481                                            changed_flags, *total_flags);
4482                         /* queue work 'cuz mac80211 is holding a lock which
4483                          * prevents us from issuing (synchronous) f/w cmds */
4484                         queue_work(priv->workqueue, &priv->set_monitor);
4485                         new_flags &= FIF_PROMISC_IN_BSS |
4486                                      FIF_OTHER_BSS |
4487                                      FIF_ALLMULTI;
4488                 }
4489         }
4490         *total_flags = new_flags;
4491 }
4492
4493 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4494                                      struct ieee80211_if_init_conf *conf)
4495 {
4496         struct iwl_priv *priv = hw->priv;
4497
4498         IWL_DEBUG_MAC80211("enter\n");
4499
4500         mutex_lock(&priv->mutex);
4501
4502         if (iwl_is_ready_rf(priv)) {
4503                 iwl4965_scan_cancel_timeout(priv, 100);
4504                 cancel_delayed_work(&priv->post_associate);
4505                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4506                 iwl4965_commit_rxon(priv);
4507         }
4508         if (priv->vif == conf->vif) {
4509                 priv->vif = NULL;
4510                 memset(priv->bssid, 0, ETH_ALEN);
4511                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4512                 priv->essid_len = 0;
4513         }
4514         mutex_unlock(&priv->mutex);
4515
4516         IWL_DEBUG_MAC80211("leave\n");
4517
4518 }
4519
4520 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4521 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4522                                      struct ieee80211_vif *vif,
4523                                      struct ieee80211_bss_conf *bss_conf,
4524                                      u32 changes)
4525 {
4526         struct iwl_priv *priv = hw->priv;
4527
4528         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4529
4530         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4531                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4532                                    bss_conf->use_short_preamble);
4533                 if (bss_conf->use_short_preamble)
4534                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4535                 else
4536                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4537         }
4538
4539         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4540                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4541                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4542                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4543                 else
4544                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4545         }
4546
4547         if (changes & BSS_CHANGED_HT) {
4548                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4549                 iwl4965_ht_conf(priv, bss_conf);
4550                 iwl_set_rxon_chain(priv);
4551         }
4552
4553         if (changes & BSS_CHANGED_ASSOC) {
4554                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4555                 /* This should never happen as this function should
4556                  * never be called from interrupt context. */
4557                 if (WARN_ON_ONCE(in_interrupt()))
4558                         return;
4559                 if (bss_conf->assoc) {
4560                         priv->assoc_id = bss_conf->aid;
4561                         priv->beacon_int = bss_conf->beacon_int;
4562                         priv->timestamp = bss_conf->timestamp;
4563                         priv->assoc_capability = bss_conf->assoc_capability;
4564                         priv->next_scan_jiffies = jiffies +
4565                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4566                         mutex_lock(&priv->mutex);
4567                         iwl4965_post_associate(priv);
4568                         mutex_unlock(&priv->mutex);
4569                 } else {
4570                         priv->assoc_id = 0;
4571                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4572                 }
4573         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4574                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4575                         iwl_send_rxon_assoc(priv);
4576         }
4577
4578 }
4579
4580 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4581 {
4582         int rc = 0;
4583         unsigned long flags;
4584         struct iwl_priv *priv = hw->priv;
4585
4586         IWL_DEBUG_MAC80211("enter\n");
4587
4588         mutex_lock(&priv->mutex);
4589         spin_lock_irqsave(&priv->lock, flags);
4590
4591         if (!iwl_is_ready_rf(priv)) {
4592                 rc = -EIO;
4593                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4594                 goto out_unlock;
4595         }
4596
4597         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4598                 rc = -EIO;
4599                 IWL_ERROR("ERROR: APs don't scan\n");
4600                 goto out_unlock;
4601         }
4602
4603         /* we don't schedule scan within next_scan_jiffies period */
4604         if (priv->next_scan_jiffies &&
4605                         time_after(priv->next_scan_jiffies, jiffies)) {
4606                 rc = -EAGAIN;
4607                 goto out_unlock;
4608         }
4609         /* if we just finished scan ask for delay */
4610         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4611                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4612                 rc = -EAGAIN;
4613                 goto out_unlock;
4614         }
4615         if (len) {
4616                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4617                                iwl4965_escape_essid(ssid, len), (int)len);
4618
4619                 priv->one_direct_scan = 1;
4620                 priv->direct_ssid_len = (u8)
4621                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4622                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4623         } else
4624                 priv->one_direct_scan = 0;
4625
4626         rc = iwl4965_scan_initiate(priv);
4627
4628         IWL_DEBUG_MAC80211("leave\n");
4629
4630 out_unlock:
4631         spin_unlock_irqrestore(&priv->lock, flags);
4632         mutex_unlock(&priv->mutex);
4633
4634         return rc;
4635 }
4636
4637 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4638                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4639                         u32 iv32, u16 *phase1key)
4640 {
4641         struct iwl_priv *priv = hw->priv;
4642         u8 sta_id = IWL_INVALID_STATION;
4643         unsigned long flags;
4644         __le16 key_flags = 0;
4645         int i;
4646         DECLARE_MAC_BUF(mac);
4647
4648         IWL_DEBUG_MAC80211("enter\n");
4649
4650         sta_id = iwl_find_station(priv, addr);
4651         if (sta_id == IWL_INVALID_STATION) {
4652                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4653                                    print_mac(mac, addr));
4654                 return;
4655         }
4656
4657         iwl4965_scan_cancel_timeout(priv, 100);
4658
4659         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4660         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4661         key_flags &= ~STA_KEY_FLG_INVALID;
4662
4663         if (sta_id == priv->hw_params.bcast_sta_id)
4664                 key_flags |= STA_KEY_MULTICAST_MSK;
4665
4666         spin_lock_irqsave(&priv->sta_lock, flags);
4667
4668         priv->stations[sta_id].sta.key.key_flags = key_flags;
4669         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4670
4671         for (i = 0; i < 5; i++)
4672                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4673                         cpu_to_le16(phase1key[i]);
4674
4675         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4676         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4677
4678         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4679
4680         spin_unlock_irqrestore(&priv->sta_lock, flags);
4681
4682         IWL_DEBUG_MAC80211("leave\n");
4683 }
4684
4685 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4686                            const u8 *local_addr, const u8 *addr,
4687                            struct ieee80211_key_conf *key)
4688 {
4689         struct iwl_priv *priv = hw->priv;
4690         DECLARE_MAC_BUF(mac);
4691         int ret = 0;
4692         u8 sta_id = IWL_INVALID_STATION;
4693         u8 is_default_wep_key = 0;
4694
4695         IWL_DEBUG_MAC80211("enter\n");
4696
4697         if (priv->hw_params.sw_crypto) {
4698                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4699                 return -EOPNOTSUPP;
4700         }
4701
4702         if (is_zero_ether_addr(addr))
4703                 /* only support pairwise keys */
4704                 return -EOPNOTSUPP;
4705
4706         sta_id = iwl_find_station(priv, addr);
4707         if (sta_id == IWL_INVALID_STATION) {
4708                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4709                                    print_mac(mac, addr));
4710                 return -EINVAL;
4711
4712         }
4713
4714         mutex_lock(&priv->mutex);
4715         iwl4965_scan_cancel_timeout(priv, 100);
4716         mutex_unlock(&priv->mutex);
4717
4718         /* If we are getting WEP group key and we didn't receive any key mapping
4719          * so far, we are in legacy wep mode (group key only), otherwise we are
4720          * in 1X mode.
4721          * In legacy wep mode, we use another host command to the uCode */
4722         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4723                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4724                 if (cmd == SET_KEY)
4725                         is_default_wep_key = !priv->key_mapping_key;
4726                 else
4727                         is_default_wep_key =
4728                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4729         }
4730
4731         switch (cmd) {
4732         case SET_KEY:
4733                 if (is_default_wep_key)
4734                         ret = iwl_set_default_wep_key(priv, key);
4735                 else
4736                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4737
4738                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4739                 break;
4740         case DISABLE_KEY:
4741                 if (is_default_wep_key)
4742                         ret = iwl_remove_default_wep_key(priv, key);
4743                 else
4744                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4745
4746                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4747                 break;
4748         default:
4749                 ret = -EINVAL;
4750         }
4751
4752         IWL_DEBUG_MAC80211("leave\n");
4753
4754         return ret;
4755 }
4756
4757 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4758                            const struct ieee80211_tx_queue_params *params)
4759 {
4760         struct iwl_priv *priv = hw->priv;
4761         unsigned long flags;
4762         int q;
4763
4764         IWL_DEBUG_MAC80211("enter\n");
4765
4766         if (!iwl_is_ready_rf(priv)) {
4767                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4768                 return -EIO;
4769         }
4770
4771         if (queue >= AC_NUM) {
4772                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4773                 return 0;
4774         }
4775
4776         if (!priv->qos_data.qos_enable) {
4777                 priv->qos_data.qos_active = 0;
4778                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4779                 return 0;
4780         }
4781         q = AC_NUM - 1 - queue;
4782
4783         spin_lock_irqsave(&priv->lock, flags);
4784
4785         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4786         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4787         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4788         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4789                         cpu_to_le16((params->txop * 32));
4790
4791         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4792         priv->qos_data.qos_active = 1;
4793
4794         spin_unlock_irqrestore(&priv->lock, flags);
4795
4796         mutex_lock(&priv->mutex);
4797         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4798                 iwl4965_activate_qos(priv, 1);
4799         else if (priv->assoc_id && iwl_is_associated(priv))
4800                 iwl4965_activate_qos(priv, 0);
4801
4802         mutex_unlock(&priv->mutex);
4803
4804         IWL_DEBUG_MAC80211("leave\n");
4805         return 0;
4806 }
4807
4808 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4809                                 struct ieee80211_tx_queue_stats *stats)
4810 {
4811         struct iwl_priv *priv = hw->priv;
4812         int i, avail;
4813         struct iwl_tx_queue *txq;
4814         struct iwl_queue *q;
4815         unsigned long flags;
4816
4817         IWL_DEBUG_MAC80211("enter\n");
4818
4819         if (!iwl_is_ready_rf(priv)) {
4820                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4821                 return -EIO;
4822         }
4823
4824         spin_lock_irqsave(&priv->lock, flags);
4825
4826         for (i = 0; i < AC_NUM; i++) {
4827                 txq = &priv->txq[i];
4828                 q = &txq->q;
4829                 avail = iwl_queue_space(q);
4830
4831                 stats[i].len = q->n_window - avail;
4832                 stats[i].limit = q->n_window - q->high_mark;
4833                 stats[i].count = q->n_window;
4834
4835         }
4836         spin_unlock_irqrestore(&priv->lock, flags);
4837
4838         IWL_DEBUG_MAC80211("leave\n");
4839
4840         return 0;
4841 }
4842
4843 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4844                              struct ieee80211_low_level_stats *stats)
4845 {
4846         struct iwl_priv *priv = hw->priv;
4847
4848         priv = hw->priv;
4849         IWL_DEBUG_MAC80211("enter\n");
4850         IWL_DEBUG_MAC80211("leave\n");
4851
4852         return 0;
4853 }
4854
4855 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4856 {
4857         struct iwl_priv *priv;
4858
4859         priv = hw->priv;
4860         IWL_DEBUG_MAC80211("enter\n");
4861         IWL_DEBUG_MAC80211("leave\n");
4862
4863         return 0;
4864 }
4865
4866 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4867 {
4868         struct iwl_priv *priv = hw->priv;
4869         unsigned long flags;
4870
4871         mutex_lock(&priv->mutex);
4872         IWL_DEBUG_MAC80211("enter\n");
4873
4874         priv->lq_mngr.lq_ready = 0;
4875 #ifdef CONFIG_IWL4965_HT
4876         spin_lock_irqsave(&priv->lock, flags);
4877         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4878         spin_unlock_irqrestore(&priv->lock, flags);
4879 #endif /* CONFIG_IWL4965_HT */
4880
4881         iwl_reset_qos(priv);
4882
4883         cancel_delayed_work(&priv->post_associate);
4884
4885         spin_lock_irqsave(&priv->lock, flags);
4886         priv->assoc_id = 0;
4887         priv->assoc_capability = 0;
4888         priv->assoc_station_added = 0;
4889
4890         /* new association get rid of ibss beacon skb */
4891         if (priv->ibss_beacon)
4892                 dev_kfree_skb(priv->ibss_beacon);
4893
4894         priv->ibss_beacon = NULL;
4895
4896         priv->beacon_int = priv->hw->conf.beacon_int;
4897         priv->timestamp = 0;
4898         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4899                 priv->beacon_int = 0;
4900
4901         spin_unlock_irqrestore(&priv->lock, flags);
4902
4903         if (!iwl_is_ready_rf(priv)) {
4904                 IWL_DEBUG_MAC80211("leave - not ready\n");
4905                 mutex_unlock(&priv->mutex);
4906                 return;
4907         }
4908
4909         /* we are restarting association process
4910          * clear RXON_FILTER_ASSOC_MSK bit
4911          */
4912         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4913                 iwl4965_scan_cancel_timeout(priv, 100);
4914                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4915                 iwl4965_commit_rxon(priv);
4916         }
4917
4918         iwl_power_update_mode(priv, 0);
4919
4920         /* Per mac80211.h: This is only used in IBSS mode... */
4921         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4922
4923                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4924                 mutex_unlock(&priv->mutex);
4925                 return;
4926         }
4927
4928         iwl4965_set_rate(priv);
4929
4930         mutex_unlock(&priv->mutex);
4931
4932         IWL_DEBUG_MAC80211("leave\n");
4933 }
4934
4935 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4936 {
4937         struct iwl_priv *priv = hw->priv;
4938         unsigned long flags;
4939
4940         mutex_lock(&priv->mutex);
4941         IWL_DEBUG_MAC80211("enter\n");
4942
4943         if (!iwl_is_ready_rf(priv)) {
4944                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4945                 mutex_unlock(&priv->mutex);
4946                 return -EIO;
4947         }
4948
4949         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4950                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4951                 mutex_unlock(&priv->mutex);
4952                 return -EIO;
4953         }
4954
4955         spin_lock_irqsave(&priv->lock, flags);
4956
4957         if (priv->ibss_beacon)
4958                 dev_kfree_skb(priv->ibss_beacon);
4959
4960         priv->ibss_beacon = skb;
4961
4962         priv->assoc_id = 0;
4963
4964         IWL_DEBUG_MAC80211("leave\n");
4965         spin_unlock_irqrestore(&priv->lock, flags);
4966
4967         iwl_reset_qos(priv);
4968
4969         queue_work(priv->workqueue, &priv->post_associate.work);
4970
4971         mutex_unlock(&priv->mutex);
4972
4973         return 0;
4974 }
4975
4976 /*****************************************************************************
4977  *
4978  * sysfs attributes
4979  *
4980  *****************************************************************************/
4981
4982 #ifdef CONFIG_IWLWIFI_DEBUG
4983
4984 /*
4985  * The following adds a new attribute to the sysfs representation
4986  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4987  * used for controlling the debug level.
4988  *
4989  * See the level definitions in iwl for details.
4990  */
4991
4992 static ssize_t show_debug_level(struct device *d,
4993                                 struct device_attribute *attr, char *buf)
4994 {
4995         struct iwl_priv *priv = d->driver_data;
4996
4997         return sprintf(buf, "0x%08X\n", priv->debug_level);
4998 }
4999 static ssize_t store_debug_level(struct device *d,
5000                                 struct device_attribute *attr,
5001                                  const char *buf, size_t count)
5002 {
5003         struct iwl_priv *priv = d->driver_data;
5004         char *p = (char *)buf;
5005         u32 val;
5006
5007         val = simple_strtoul(p, &p, 0);
5008         if (p == buf)
5009                 printk(KERN_INFO DRV_NAME
5010                        ": %s is not in hex or decimal form.\n", buf);
5011         else
5012                 priv->debug_level = val;
5013
5014         return strnlen(buf, count);
5015 }
5016
5017 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5018                         show_debug_level, store_debug_level);
5019
5020
5021 #endif /* CONFIG_IWLWIFI_DEBUG */
5022
5023
5024 static ssize_t show_version(struct device *d,
5025                                 struct device_attribute *attr, char *buf)
5026 {
5027         struct iwl_priv *priv = d->driver_data;
5028         struct iwl_alive_resp *palive = &priv->card_alive;
5029
5030         if (palive->is_valid)
5031                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5032                                     "fw type: 0x%01X 0x%01X\n",
5033                                 palive->ucode_major, palive->ucode_minor,
5034                                 palive->sw_rev[0], palive->sw_rev[1],
5035                                 palive->ver_type, palive->ver_subtype);
5036
5037         else
5038                 return sprintf(buf, "fw not loaded\n");
5039 }
5040
5041 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5042
5043 static ssize_t show_temperature(struct device *d,
5044                                 struct device_attribute *attr, char *buf)
5045 {
5046         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5047
5048         if (!iwl_is_alive(priv))
5049                 return -EAGAIN;
5050
5051         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
5052 }
5053
5054 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5055
5056 static ssize_t show_rs_window(struct device *d,
5057                               struct device_attribute *attr,
5058                               char *buf)
5059 {
5060         struct iwl_priv *priv = d->driver_data;
5061         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
5062 }
5063 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5064
5065 static ssize_t show_tx_power(struct device *d,
5066                              struct device_attribute *attr, char *buf)
5067 {
5068         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5069         return sprintf(buf, "%d\n", priv->user_txpower_limit);
5070 }
5071
5072 static ssize_t store_tx_power(struct device *d,
5073                               struct device_attribute *attr,
5074                               const char *buf, size_t count)
5075 {
5076         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5077         char *p = (char *)buf;
5078         u32 val;
5079
5080         val = simple_strtoul(p, &p, 10);
5081         if (p == buf)
5082                 printk(KERN_INFO DRV_NAME
5083                        ": %s is not in decimal form.\n", buf);
5084         else
5085                 iwl4965_hw_reg_set_txpower(priv, val);
5086
5087         return count;
5088 }
5089
5090 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5091
5092 static ssize_t show_flags(struct device *d,
5093                           struct device_attribute *attr, char *buf)
5094 {
5095         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5096
5097         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5098 }
5099
5100 static ssize_t store_flags(struct device *d,
5101                            struct device_attribute *attr,
5102                            const char *buf, size_t count)
5103 {
5104         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5105         u32 flags = simple_strtoul(buf, NULL, 0);
5106
5107         mutex_lock(&priv->mutex);
5108         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5109                 /* Cancel any currently running scans... */
5110                 if (iwl4965_scan_cancel_timeout(priv, 100))
5111                         IWL_WARNING("Could not cancel scan.\n");
5112                 else {
5113                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5114                                        flags);
5115                         priv->staging_rxon.flags = cpu_to_le32(flags);
5116                         iwl4965_commit_rxon(priv);
5117                 }
5118         }
5119         mutex_unlock(&priv->mutex);
5120
5121         return count;
5122 }
5123
5124 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5125
5126 static ssize_t show_filter_flags(struct device *d,
5127                                  struct device_attribute *attr, char *buf)
5128 {
5129         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5130
5131         return sprintf(buf, "0x%04X\n",
5132                 le32_to_cpu(priv->active_rxon.filter_flags));
5133 }
5134
5135 static ssize_t store_filter_flags(struct device *d,
5136                                   struct device_attribute *attr,
5137                                   const char *buf, size_t count)
5138 {
5139         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5140         u32 filter_flags = simple_strtoul(buf, NULL, 0);
5141
5142         mutex_lock(&priv->mutex);
5143         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5144                 /* Cancel any currently running scans... */
5145                 if (iwl4965_scan_cancel_timeout(priv, 100))
5146                         IWL_WARNING("Could not cancel scan.\n");
5147                 else {
5148                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5149                                        "0x%04X\n", filter_flags);
5150                         priv->staging_rxon.filter_flags =
5151                                 cpu_to_le32(filter_flags);
5152                         iwl4965_commit_rxon(priv);
5153                 }
5154         }
5155         mutex_unlock(&priv->mutex);
5156
5157         return count;
5158 }
5159
5160 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5161                    store_filter_flags);
5162
5163 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5164
5165 static ssize_t show_measurement(struct device *d,
5166                                 struct device_attribute *attr, char *buf)
5167 {
5168         struct iwl_priv *priv = dev_get_drvdata(d);
5169         struct iwl4965_spectrum_notification measure_report;
5170         u32 size = sizeof(measure_report), len = 0, ofs = 0;
5171         u8 *data = (u8 *) & measure_report;
5172         unsigned long flags;
5173
5174         spin_lock_irqsave(&priv->lock, flags);
5175         if (!(priv->measurement_status & MEASUREMENT_READY)) {
5176                 spin_unlock_irqrestore(&priv->lock, flags);
5177                 return 0;
5178         }
5179         memcpy(&measure_report, &priv->measure_report, size);
5180         priv->measurement_status = 0;
5181         spin_unlock_irqrestore(&priv->lock, flags);
5182
5183         while (size && (PAGE_SIZE - len)) {
5184                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5185                                    PAGE_SIZE - len, 1);
5186                 len = strlen(buf);
5187                 if (PAGE_SIZE - len)
5188                         buf[len++] = '\n';
5189
5190                 ofs += 16;
5191                 size -= min(size, 16U);
5192         }
5193
5194         return len;
5195 }
5196
5197 static ssize_t store_measurement(struct device *d,
5198                                  struct device_attribute *attr,
5199                                  const char *buf, size_t count)
5200 {
5201         struct iwl_priv *priv = dev_get_drvdata(d);
5202         struct ieee80211_measurement_params params = {
5203                 .channel = le16_to_cpu(priv->active_rxon.channel),
5204                 .start_time = cpu_to_le64(priv->last_tsf),
5205                 .duration = cpu_to_le16(1),
5206         };
5207         u8 type = IWL_MEASURE_BASIC;
5208         u8 buffer[32];
5209         u8 channel;
5210
5211         if (count) {
5212                 char *p = buffer;
5213                 strncpy(buffer, buf, min(sizeof(buffer), count));
5214                 channel = simple_strtoul(p, NULL, 0);
5215                 if (channel)
5216                         params.channel = channel;
5217
5218                 p = buffer;
5219                 while (*p && *p != ' ')
5220                         p++;
5221                 if (*p)
5222                         type = simple_strtoul(p + 1, NULL, 0);
5223         }
5224
5225         IWL_DEBUG_INFO("Invoking measurement of type %d on "
5226                        "channel %d (for '%s')\n", type, params.channel, buf);
5227         iwl4965_get_measurement(priv, &params, type);
5228
5229         return count;
5230 }
5231
5232 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5233                    show_measurement, store_measurement);
5234 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
5235
5236 static ssize_t store_retry_rate(struct device *d,
5237                                 struct device_attribute *attr,
5238                                 const char *buf, size_t count)
5239 {
5240         struct iwl_priv *priv = dev_get_drvdata(d);
5241
5242         priv->retry_rate = simple_strtoul(buf, NULL, 0);
5243         if (priv->retry_rate <= 0)
5244                 priv->retry_rate = 1;
5245
5246         return count;
5247 }
5248
5249 static ssize_t show_retry_rate(struct device *d,
5250                                struct device_attribute *attr, char *buf)
5251 {
5252         struct iwl_priv *priv = dev_get_drvdata(d);
5253         return sprintf(buf, "%d", priv->retry_rate);
5254 }
5255
5256 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5257                    store_retry_rate);
5258
5259 static ssize_t store_power_level(struct device *d,
5260                                  struct device_attribute *attr,
5261                                  const char *buf, size_t count)
5262 {
5263         struct iwl_priv *priv = dev_get_drvdata(d);
5264         int rc;
5265         int mode;
5266
5267         mode = simple_strtoul(buf, NULL, 0);
5268         mutex_lock(&priv->mutex);
5269
5270         if (!iwl_is_ready(priv)) {
5271                 rc = -EAGAIN;
5272                 goto out;
5273         }
5274
5275         rc = iwl_power_set_user_mode(priv, mode);
5276         if (rc) {
5277                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5278                 goto out;
5279         }
5280         rc = count;
5281
5282  out:
5283         mutex_unlock(&priv->mutex);
5284         return rc;
5285 }
5286
5287 #define MAX_WX_STRING 80
5288
5289 /* Values are in microsecond */
5290 static const s32 timeout_duration[] = {
5291         350000,
5292         250000,
5293         75000,
5294         37000,
5295         25000,
5296 };
5297 static const s32 period_duration[] = {
5298         400000,
5299         700000,
5300         1000000,
5301         1000000,
5302         1000000
5303 };
5304
5305 static ssize_t show_power_level(struct device *d,
5306                                 struct device_attribute *attr, char *buf)
5307 {
5308         struct iwl_priv *priv = dev_get_drvdata(d);
5309         int level = priv->power_data.power_mode;
5310         char *p = buf;
5311
5312         p += sprintf(p, "%d ", level);
5313         switch (level) {
5314         case IWL_POWER_MODE_CAM:
5315         case IWL_POWER_AC:
5316                 p += sprintf(p, "(AC)");
5317                 break;
5318         case IWL_POWER_BATTERY:
5319                 p += sprintf(p, "(BATTERY)");
5320                 break;
5321         default:
5322                 p += sprintf(p,
5323                              "(Timeout %dms, Period %dms)",
5324                              timeout_duration[level - 1] / 1000,
5325                              period_duration[level - 1] / 1000);
5326         }
5327 /*
5328         if (!(priv->power_mode & IWL_POWER_ENABLED))
5329                 p += sprintf(p, " OFF\n");
5330         else
5331                 p += sprintf(p, " \n");
5332 */
5333         p += sprintf(p, " \n");
5334         return (p - buf + 1);
5335 }
5336
5337 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5338                    store_power_level);
5339
5340 static ssize_t show_channels(struct device *d,
5341                              struct device_attribute *attr, char *buf)
5342 {
5343         /* all this shit doesn't belong into sysfs anyway */
5344         return 0;
5345 }
5346
5347 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5348
5349 static ssize_t show_statistics(struct device *d,
5350                                struct device_attribute *attr, char *buf)
5351 {
5352         struct iwl_priv *priv = dev_get_drvdata(d);
5353         u32 size = sizeof(struct iwl4965_notif_statistics);
5354         u32 len = 0, ofs = 0;
5355         u8 *data = (u8 *) & priv->statistics;
5356         int rc = 0;
5357
5358         if (!iwl_is_alive(priv))
5359                 return -EAGAIN;
5360
5361         mutex_lock(&priv->mutex);
5362         rc = iwl_send_statistics_request(priv, 0);
5363         mutex_unlock(&priv->mutex);
5364
5365         if (rc) {
5366                 len = sprintf(buf,
5367                               "Error sending statistics request: 0x%08X\n", rc);
5368                 return len;
5369         }
5370
5371         while (size && (PAGE_SIZE - len)) {
5372                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5373                                    PAGE_SIZE - len, 1);
5374                 len = strlen(buf);
5375                 if (PAGE_SIZE - len)
5376                         buf[len++] = '\n';
5377
5378                 ofs += 16;
5379                 size -= min(size, 16U);
5380         }
5381
5382         return len;
5383 }
5384
5385 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5386
5387 static ssize_t show_status(struct device *d,
5388                            struct device_attribute *attr, char *buf)
5389 {
5390         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5391         if (!iwl_is_alive(priv))
5392                 return -EAGAIN;
5393         return sprintf(buf, "0x%08x\n", (int)priv->status);
5394 }
5395
5396 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5397
5398 /*****************************************************************************
5399  *
5400  * driver setup and teardown
5401  *
5402  *****************************************************************************/
5403
5404 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5405 {
5406         priv->workqueue = create_workqueue(DRV_NAME);
5407
5408         init_waitqueue_head(&priv->wait_command_queue);
5409
5410         INIT_WORK(&priv->up, iwl4965_bg_up);
5411         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5412         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5413         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5414         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5415         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5416         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5417         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5418         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5419         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5420         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5421         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5422         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5423
5424         iwl4965_hw_setup_deferred_work(priv);
5425
5426         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5427                      iwl4965_irq_tasklet, (unsigned long)priv);
5428 }
5429
5430 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5431 {
5432         iwl4965_hw_cancel_deferred_work(priv);
5433
5434         cancel_delayed_work_sync(&priv->init_alive_start);
5435         cancel_delayed_work(&priv->scan_check);
5436         cancel_delayed_work(&priv->alive_start);
5437         cancel_delayed_work(&priv->post_associate);
5438         cancel_work_sync(&priv->beacon_update);
5439 }
5440
5441 static struct attribute *iwl4965_sysfs_entries[] = {
5442         &dev_attr_channels.attr,
5443         &dev_attr_flags.attr,
5444         &dev_attr_filter_flags.attr,
5445 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5446         &dev_attr_measurement.attr,
5447 #endif
5448         &dev_attr_power_level.attr,
5449         &dev_attr_retry_rate.attr,
5450         &dev_attr_rs_window.attr,
5451         &dev_attr_statistics.attr,
5452         &dev_attr_status.attr,
5453         &dev_attr_temperature.attr,
5454         &dev_attr_tx_power.attr,
5455 #ifdef CONFIG_IWLWIFI_DEBUG
5456         &dev_attr_debug_level.attr,
5457 #endif
5458         &dev_attr_version.attr,
5459
5460         NULL
5461 };
5462
5463 static struct attribute_group iwl4965_attribute_group = {
5464         .name = NULL,           /* put in device directory */
5465         .attrs = iwl4965_sysfs_entries,
5466 };
5467
5468 static struct ieee80211_ops iwl4965_hw_ops = {
5469         .tx = iwl4965_mac_tx,
5470         .start = iwl4965_mac_start,
5471         .stop = iwl4965_mac_stop,
5472         .add_interface = iwl4965_mac_add_interface,
5473         .remove_interface = iwl4965_mac_remove_interface,
5474         .config = iwl4965_mac_config,
5475         .config_interface = iwl4965_mac_config_interface,
5476         .configure_filter = iwl4965_configure_filter,
5477         .set_key = iwl4965_mac_set_key,
5478         .update_tkip_key = iwl4965_mac_update_tkip_key,
5479         .get_stats = iwl4965_mac_get_stats,
5480         .get_tx_stats = iwl4965_mac_get_tx_stats,
5481         .conf_tx = iwl4965_mac_conf_tx,
5482         .get_tsf = iwl4965_mac_get_tsf,
5483         .reset_tsf = iwl4965_mac_reset_tsf,
5484         .beacon_update = iwl4965_mac_beacon_update,
5485         .bss_info_changed = iwl4965_bss_info_changed,
5486 #ifdef CONFIG_IWL4965_HT
5487         .ampdu_action = iwl4965_mac_ampdu_action,
5488 #endif  /* CONFIG_IWL4965_HT */
5489         .hw_scan = iwl4965_mac_hw_scan
5490 };
5491
5492 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5493 {
5494         int err = 0;
5495         struct iwl_priv *priv;
5496         struct ieee80211_hw *hw;
5497         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5498         unsigned long flags;
5499         DECLARE_MAC_BUF(mac);
5500
5501         /************************
5502          * 1. Allocating HW data
5503          ************************/
5504
5505         /* Disabling hardware scan means that mac80211 will perform scans
5506          * "the hard way", rather than using device's scan. */
5507         if (cfg->mod_params->disable_hw_scan) {
5508                 if (cfg->mod_params->debug & IWL_DL_INFO)
5509                         dev_printk(KERN_DEBUG, &(pdev->dev),
5510                                    "Disabling hw_scan\n");
5511                 iwl4965_hw_ops.hw_scan = NULL;
5512         }
5513
5514         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5515         if (!hw) {
5516                 err = -ENOMEM;
5517                 goto out;
5518         }
5519         priv = hw->priv;
5520         /* At this point both hw and priv are allocated. */
5521
5522         SET_IEEE80211_DEV(hw, &pdev->dev);
5523
5524         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5525         priv->cfg = cfg;
5526         priv->pci_dev = pdev;
5527
5528 #ifdef CONFIG_IWLWIFI_DEBUG
5529         priv->debug_level = priv->cfg->mod_params->debug;
5530         atomic_set(&priv->restrict_refcnt, 0);
5531 #endif
5532
5533         /**************************
5534          * 2. Initializing PCI bus
5535          **************************/
5536         if (pci_enable_device(pdev)) {
5537                 err = -ENODEV;
5538                 goto out_ieee80211_free_hw;
5539         }
5540
5541         pci_set_master(pdev);
5542
5543         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5544         if (!err)
5545                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5546         if (err) {
5547                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5548                 if (!err)
5549                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5550                 /* both attempts failed: */
5551                 if (err) {
5552                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5553                                 DRV_NAME);
5554                         goto out_pci_disable_device;
5555                 }
5556         }
5557
5558         err = pci_request_regions(pdev, DRV_NAME);
5559         if (err)
5560                 goto out_pci_disable_device;
5561
5562         pci_set_drvdata(pdev, priv);
5563
5564         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5565          * PCI Tx retries from interfering with C3 CPU state */
5566         pci_write_config_byte(pdev, 0x41, 0x00);
5567
5568         /***********************
5569          * 3. Read REV register
5570          ***********************/
5571         priv->hw_base = pci_iomap(pdev, 0, 0);
5572         if (!priv->hw_base) {
5573                 err = -ENODEV;
5574                 goto out_pci_release_regions;
5575         }
5576
5577         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5578                 (unsigned long long) pci_resource_len(pdev, 0));
5579         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5580
5581         iwl_hw_detect(priv);
5582         printk(KERN_INFO DRV_NAME
5583                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5584                 priv->cfg->name, priv->hw_rev);
5585
5586         /* amp init */
5587         err = priv->cfg->ops->lib->apm_ops.init(priv);
5588         if (err < 0) {
5589                 IWL_DEBUG_INFO("Failed to init APMG\n");
5590                 goto out_iounmap;
5591         }
5592         /*****************
5593          * 4. Read EEPROM
5594          *****************/
5595         /* Read the EEPROM */
5596         err = iwl_eeprom_init(priv);
5597         if (err) {
5598                 IWL_ERROR("Unable to init EEPROM\n");
5599                 goto out_iounmap;
5600         }
5601         err = iwl_eeprom_check_version(priv);
5602         if (err)
5603                 goto out_iounmap;
5604
5605         /* extract MAC Address */
5606         iwl_eeprom_get_mac(priv, priv->mac_addr);
5607         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5608         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5609
5610         /************************
5611          * 5. Setup HW constants
5612          ************************/
5613         /* Device-specific setup */
5614         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5615                 IWL_ERROR("failed to set hw parameters\n");
5616                 goto out_free_eeprom;
5617         }
5618
5619         /*******************
5620          * 6. Setup priv
5621          *******************/
5622
5623         err = iwl_init_drv(priv);
5624         if (err)
5625                 goto out_free_eeprom;
5626         /* At this point both hw and priv are initialized. */
5627
5628         /**********************************
5629          * 7. Initialize module parameters
5630          **********************************/
5631
5632         /* Disable radio (SW RF KILL) via parameter when loading driver */
5633         if (priv->cfg->mod_params->disable) {
5634                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5635                 IWL_DEBUG_INFO("Radio disabled.\n");
5636         }
5637
5638         /********************
5639          * 8. Setup services
5640          ********************/
5641         spin_lock_irqsave(&priv->lock, flags);
5642         iwl4965_disable_interrupts(priv);
5643         spin_unlock_irqrestore(&priv->lock, flags);
5644
5645         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5646         if (err) {
5647                 IWL_ERROR("failed to create sysfs device attributes\n");
5648                 goto out_uninit_drv;
5649         }
5650
5651
5652         iwl4965_setup_deferred_work(priv);
5653         iwl4965_setup_rx_handlers(priv);
5654
5655         /********************
5656          * 9. Conclude
5657          ********************/
5658         pci_save_state(pdev);
5659         pci_disable_device(pdev);
5660
5661         /**********************************
5662          * 10. Setup and register mac80211
5663          **********************************/
5664
5665         err = iwl_setup_mac(priv);
5666         if (err)
5667                 goto out_remove_sysfs;
5668
5669         err = iwl_dbgfs_register(priv, DRV_NAME);
5670         if (err)
5671                 IWL_ERROR("failed to create debugfs files\n");
5672
5673         /* notify iwlcore to init */
5674         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5675         return 0;
5676
5677  out_remove_sysfs:
5678         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5679  out_uninit_drv:
5680         iwl_uninit_drv(priv);
5681  out_free_eeprom:
5682         iwl_eeprom_free(priv);
5683  out_iounmap:
5684         pci_iounmap(pdev, priv->hw_base);
5685  out_pci_release_regions:
5686         pci_release_regions(pdev);
5687         pci_set_drvdata(pdev, NULL);
5688  out_pci_disable_device:
5689         pci_disable_device(pdev);
5690  out_ieee80211_free_hw:
5691         ieee80211_free_hw(priv->hw);
5692  out:
5693         return err;
5694 }
5695
5696 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5697 {
5698         struct iwl_priv *priv = pci_get_drvdata(pdev);
5699         struct list_head *p, *q;
5700         int i;
5701         unsigned long flags;
5702
5703         if (!priv)
5704                 return;
5705
5706         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5707
5708         if (priv->mac80211_registered) {
5709                 ieee80211_unregister_hw(priv->hw);
5710                 priv->mac80211_registered = 0;
5711         }
5712
5713         set_bit(STATUS_EXIT_PENDING, &priv->status);
5714
5715         iwl4965_down(priv);
5716
5717         /* make sure we flush any pending irq or
5718          * tasklet for the driver
5719          */
5720         spin_lock_irqsave(&priv->lock, flags);
5721         iwl4965_disable_interrupts(priv);
5722         spin_unlock_irqrestore(&priv->lock, flags);
5723
5724         iwl_synchronize_irq(priv);
5725
5726         /* Free MAC hash list for ADHOC */
5727         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5728                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5729                         list_del(p);
5730                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5731                 }
5732         }
5733
5734         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5735         iwl_dbgfs_unregister(priv);
5736         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5737
5738         iwl4965_dealloc_ucode_pci(priv);
5739
5740         if (priv->rxq.bd)
5741                 iwl_rx_queue_free(priv, &priv->rxq);
5742         iwl_hw_txq_ctx_free(priv);
5743
5744         iwlcore_clear_stations_table(priv);
5745         iwl_eeprom_free(priv);
5746
5747
5748         /*netif_stop_queue(dev); */
5749         flush_workqueue(priv->workqueue);
5750
5751         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5752          * priv->workqueue... so we can't take down the workqueue
5753          * until now... */
5754         destroy_workqueue(priv->workqueue);
5755         priv->workqueue = NULL;
5756
5757         pci_iounmap(pdev, priv->hw_base);
5758         pci_release_regions(pdev);
5759         pci_disable_device(pdev);
5760         pci_set_drvdata(pdev, NULL);
5761
5762         iwl_uninit_drv(priv);
5763
5764         if (priv->ibss_beacon)
5765                 dev_kfree_skb(priv->ibss_beacon);
5766
5767         ieee80211_free_hw(priv->hw);
5768 }
5769
5770 #ifdef CONFIG_PM
5771
5772 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5773 {
5774         struct iwl_priv *priv = pci_get_drvdata(pdev);
5775
5776         if (priv->is_open) {
5777                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5778                 iwl4965_mac_stop(priv->hw);
5779                 priv->is_open = 1;
5780         }
5781
5782         pci_set_power_state(pdev, PCI_D3hot);
5783
5784         return 0;
5785 }
5786
5787 static int iwl4965_pci_resume(struct pci_dev *pdev)
5788 {
5789         struct iwl_priv *priv = pci_get_drvdata(pdev);
5790
5791         pci_set_power_state(pdev, PCI_D0);
5792
5793         if (priv->is_open)
5794                 iwl4965_mac_start(priv->hw);
5795
5796         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5797         return 0;
5798 }
5799
5800 #endif /* CONFIG_PM */
5801
5802 /*****************************************************************************
5803  *
5804  * driver and module entry point
5805  *
5806  *****************************************************************************/
5807
5808 /* Hardware specific file defines the PCI IDs table for that hardware module */
5809 static struct pci_device_id iwl_hw_card_ids[] = {
5810         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5811         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5812 #ifdef CONFIG_IWL5000
5813         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5814         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5815         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5816 #endif /* CONFIG_IWL5000 */
5817         {0}
5818 };
5819 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5820
5821 static struct pci_driver iwl_driver = {
5822         .name = DRV_NAME,
5823         .id_table = iwl_hw_card_ids,
5824         .probe = iwl4965_pci_probe,
5825         .remove = __devexit_p(iwl4965_pci_remove),
5826 #ifdef CONFIG_PM
5827         .suspend = iwl4965_pci_suspend,
5828         .resume = iwl4965_pci_resume,
5829 #endif
5830 };
5831
5832 static int __init iwl4965_init(void)
5833 {
5834
5835         int ret;
5836         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5837         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5838
5839         ret = iwl4965_rate_control_register();
5840         if (ret) {
5841                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5842                 return ret;
5843         }
5844
5845         ret = pci_register_driver(&iwl_driver);
5846         if (ret) {
5847                 IWL_ERROR("Unable to initialize PCI module\n");
5848                 goto error_register;
5849         }
5850
5851         return ret;
5852
5853 error_register:
5854         iwl4965_rate_control_unregister();
5855         return ret;
5856 }
5857
5858 static void __exit iwl4965_exit(void)
5859 {
5860         pci_unregister_driver(&iwl_driver);
5861         iwl4965_rate_control_unregister();
5862 }
5863
5864 module_exit(iwl4965_exit);
5865 module_init(iwl4965_init);