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 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 112  *
 113  * NOTE:  This is really only useful during development and can eventually
 114  * be #ifdef'd out once the driver is stable and folks aren't actively
 115  * making changes
 116  */
 117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 118 {
 119         int error = 0;
 120         int counter = 1;
 121
 122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 123                 error |= le32_to_cpu(rxon->flags &
 124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 125                                  RXON_FLG_RADAR_DETECT_MSK));
 126                 if (error)
 127                         IWL_WARNING("check 24G fields %d | %d\n",
 128                                     counter++, error);
 129         } else {
 130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 132                 if (error)
 133                         IWL_WARNING("check 52 fields %d | %d\n",
 134                                     counter++, error);
 135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 136                 if (error)
 137                         IWL_WARNING("check 52 CCK %d | %d\n",
 138                                     counter++, error);
 139         }
 140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 141         if (error)
 142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 143
 144         /* make sure basic rates 6Mbps and 1Mbps are supported */
 145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 147         if (error)
 148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 149
 150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 151         if (error)
 152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 153
 154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 156         if (error)
 157                 IWL_WARNING("check CCK and short slot %d | %d\n",
 158                             counter++, error);
 159
 160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 162         if (error)
 163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 164                             counter++, error);
 165
 166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 168         if (error)
 169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 170                             counter++, error);
 171
 172         if (error)
 173                 IWL_WARNING("Tuning to channel %d\n",
 174                             le16_to_cpu(rxon->channel));
 175
 176         if (error) {
 177                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 185  * @priv: staging_rxon is compared to active_rxon
 186  *
 187  * If the RXON structure is changing enough to require a new tune,
 188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 190  */
 191 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 192 {
 193
 194         /* These items are only settable from the full RXON command */
 195         if (!(iwl_is_associated(priv)) ||
 196             compare_ether_addr(priv->staging_rxon.bssid_addr,
 197                                priv->active_rxon.bssid_addr) ||
 198             compare_ether_addr(priv->staging_rxon.node_addr,
 199                                priv->active_rxon.node_addr) ||
 200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 201                                priv->active_rxon.wlap_bssid_addr) ||
 202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 204             (priv->staging_rxon.air_propagation !=
 205              priv->active_rxon.air_propagation) ||
 206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 210             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 211             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 212                 return 1;
 213
 214         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 215          * be updated with the RXON_ASSOC command -- however only some
 216          * flag transitions are allowed using RXON_ASSOC */
 217
 218         /* Check if we are not switching bands */
 219         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 220             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 221                 return 1;
 222
 223         /* Check if we are switching association toggle */
 224         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 225                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 226                 return 1;
 227
 228         return 0;
 229 }
 230
 231 /**
 232  * iwl4965_commit_rxon - commit staging_rxon to hardware
 233  *
 234  * The RXON command in staging_rxon is committed to the hardware and
 235  * the active_rxon structure is updated with the new data.  This
 236  * function correctly transitions out of the RXON_ASSOC_MSK state if
 237  * a HW tune is required based on the RXON structure changes.
 238  */
 239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 240 {
 241         /* cast away the const for active_rxon in this function */
 242         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 243         DECLARE_MAC_BUF(mac);
 244         int ret;
 245         bool new_assoc =
 246                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 247
 248         if (!iwl_is_alive(priv))
 249                 return -EBUSY;
 250
 251         /* always get timestamp with Rx frame */
 252         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 253         /* allow CTS-to-self if possible. this is relevant only for
 254          * 5000, but will not damage 4965 */
 255         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 256
 257         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 258         if (ret) {
 259                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 260                 return -EINVAL;
 261         }
 262
 263         /* If we don't need to send a full RXON, we can use
 264          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 265          * and other flags for the current radio configuration. */
 266         if (!iwl4965_full_rxon_required(priv)) {
 267                 ret = iwl_send_rxon_assoc(priv);
 268                 if (ret) {
 269                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 270                         return ret;
 271                 }
 272
 273                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 274                 return 0;
 275         }
 276
 277         /* station table will be cleared */
 278         priv->assoc_station_added = 0;
 279
 280         /* If we are currently associated and the new config requires
 281          * an RXON_ASSOC and the new config wants the associated mask enabled,
 282          * we must clear the associated from the active configuration
 283          * before we apply the new config */
 284         if (iwl_is_associated(priv) && new_assoc) {
 285                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 286                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 287
 288                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 289                                       sizeof(struct iwl_rxon_cmd),
 290                                       &priv->active_rxon);
 291
 292                 /* If the mask clearing failed then we set
 293                  * active_rxon back to what it was previously */
 294                 if (ret) {
 295                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 296                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 297                         return ret;
 298                 }
 299         }
 300
 301         IWL_DEBUG_INFO("Sending RXON\n"
 302                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 303                        "* channel = %d\n"
 304                        "* bssid = %s\n",
 305                        (new_assoc ? "" : "out"),
 306                        le16_to_cpu(priv->staging_rxon.channel),
 307                        print_mac(mac, priv->staging_rxon.bssid_addr));
 308
 309         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 310
 311         /* Apply the new configuration
 312          * RXON unassoc clears the station table in uCode, send it before
 313          * we add the bcast station. If assoc bit is set, we will send RXON
 314          * after having added the bcast and bssid station.
 315          */
 316         if (!new_assoc) {
 317                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 318                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 319                 if (ret) {
 320                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 321                         return ret;
 322                 }
 323                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 324         }
 325
 326         iwl_clear_stations_table(priv);
 327
 328         if (!priv->error_recovering)
 329                 priv->start_calib = 0;
 330
 331         iwl_init_sensitivity(priv);
 332
 333         /* If we issue a new RXON command which required a tune then we must
 334          * send a new TXPOWER command or we won't be able to Tx any frames */
 335         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 336         if (ret) {
 337                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 338                 return ret;
 339         }
 340
 341         /* Add the broadcast address so we can send broadcast frames */
 342         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 343                                                 IWL_INVALID_STATION) {
 344                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 345                 return -EIO;
 346         }
 347
 348         /* If we have set the ASSOC_MSK and we are in BSS mode then
 349          * add the IWL_AP_ID to the station rate table */
 350         if (new_assoc) {
 351                 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 352                         ret = iwl_rxon_add_station(priv,
 353                                            priv->active_rxon.bssid_addr, 1);
 354                         if (ret == IWL_INVALID_STATION) {
 355                                 IWL_ERROR("Error adding AP address for TX.\n");
 356                                 return -EIO;
 357                         }
 358                         priv->assoc_station_added = 1;
 359                         if (priv->default_wep_key &&
 360                             iwl_send_static_wepkey_cmd(priv, 0))
 361                                 IWL_ERROR("Could not send WEP static key.\n");
 362                 }
 363
 364                 /* Apply the new configuration
 365                  * RXON assoc doesn't clear the station table in uCode,
 366                  */
 367                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 368                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 369                 if (ret) {
 370                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 371                         return ret;
 372                 }
 373                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 374         }
 375
 376         return 0;
 377 }
 378
 379 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 380 {
 381
 382         iwl_set_rxon_chain(priv);
 383         iwl4965_commit_rxon(priv);
 384 }
 385
 386 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 387 {
 388         struct iwl4965_bt_cmd bt_cmd = {
 389                 .flags = 3,
 390                 .lead_time = 0xAA,
 391                 .max_kill = 1,
 392                 .kill_ack_mask = 0,
 393                 .kill_cts_mask = 0,
 394         };
 395
 396         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 397                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 398 }
 399
 400 static void iwl_clear_free_frames(struct iwl_priv *priv)
 401 {
 402         struct list_head *element;
 403
 404         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 405                        priv->frames_count);
 406
 407         while (!list_empty(&priv->free_frames)) {
 408                 element = priv->free_frames.next;
 409                 list_del(element);
 410                 kfree(list_entry(element, struct iwl_frame, list));
 411                 priv->frames_count--;
 412         }
 413
 414         if (priv->frames_count) {
 415                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 416                             priv->frames_count);
 417                 priv->frames_count = 0;
 418         }
 419 }
 420
 421 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 422 {
 423         struct iwl_frame *frame;
 424         struct list_head *element;
 425         if (list_empty(&priv->free_frames)) {
 426                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 427                 if (!frame) {
 428                         IWL_ERROR("Could not allocate frame!\n");
 429                         return NULL;
 430                 }
 431
 432                 priv->frames_count++;
 433                 return frame;
 434         }
 435
 436         element = priv->free_frames.next;
 437         list_del(element);
 438         return list_entry(element, struct iwl_frame, list);
 439 }
 440
 441 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 442 {
 443         memset(frame, 0, sizeof(*frame));
 444         list_add(&frame->list, &priv->free_frames);
 445 }
 446
 447 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 448                                 struct ieee80211_hdr *hdr,
 449                                 const u8 *dest, int left)
 450 {
 451
 452         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 453             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 454              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 455                 return 0;
 456
 457         if (priv->ibss_beacon->len > left)
 458                 return 0;
 459
 460         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 461
 462         return priv->ibss_beacon->len;
 463 }
 464
 465 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 466 {
 467         int i;
 468         int rate_mask;
 469
 470         /* Set rate mask*/
 471         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 472                 rate_mask = priv->active_rate_basic & 0xF;
 473         else
 474                 rate_mask = priv->active_rate_basic & 0xFF0;
 475
 476         /* Find lowest valid rate */
 477         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 478                                         i = iwl_rates[i].next_ieee) {
 479                 if (rate_mask & (1 << i))
 480                         return iwl_rates[i].plcp;
 481         }
 482
 483         /* No valid rate was found. Assign the lowest one */
 484         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 485                 return IWL_RATE_1M_PLCP;
 486         else
 487                 return IWL_RATE_6M_PLCP;
 488 }
 489
 490 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 491 {
 492         struct iwl_frame *frame;
 493         unsigned int frame_size;
 494         int rc;
 495         u8 rate;
 496
 497         frame = iwl_get_free_frame(priv);
 498
 499         if (!frame) {
 500                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 501                           "command.\n");
 502                 return -ENOMEM;
 503         }
 504
 505         rate = iwl4965_rate_get_lowest_plcp(priv);
 506
 507         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 508
 509         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 510                               &frame->u.cmd[0]);
 511
 512         iwl_free_frame(priv, frame);
 513
 514         return rc;
 515 }
 516
 517 /******************************************************************************
 518  *
 519  * Misc. internal state and helper functions
 520  *
 521  ******************************************************************************/
 522
 523 static void iwl4965_ht_conf(struct iwl_priv *priv,
 524                             struct ieee80211_bss_conf *bss_conf)
 525 {
 526         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 527         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 528         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 529
 530         IWL_DEBUG_MAC80211("enter: \n");
 531
 532         iwl_conf->is_ht = bss_conf->assoc_ht;
 533
 534         if (!iwl_conf->is_ht)
 535                 return;
 536
 537         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 538
 539         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 540                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 541         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 542                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 543
 544         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 545         iwl_conf->max_amsdu_size =
 546                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 547
 548         iwl_conf->supported_chan_width =
 549                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 550         iwl_conf->extension_chan_offset =
 551                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 552         /* If no above or below channel supplied disable FAT channel */
 553         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 554             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 555                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 556                 iwl_conf->supported_chan_width = 0;
 557         }
 558
 559         iwl_conf->tx_mimo_ps_mode =
 560                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 561         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 562
 563         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 564         iwl_conf->tx_chan_width =
 565                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 566         iwl_conf->ht_protection =
 567                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 568         iwl_conf->non_GF_STA_present =
 569                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 570
 571         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 572         IWL_DEBUG_MAC80211("leave\n");
 573 }
 574
 575 /*
 576  * QoS  support
 577 */
 578 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 579                                        struct iwl4965_qosparam_cmd *qos)
 580 {
 581
 582         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 583                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 584 }
 585
 586 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 587 {
 588         unsigned long flags;
 589
 590         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 591                 return;
 592
 593         if (!priv->qos_data.qos_enable)
 594                 return;
 595
 596         spin_lock_irqsave(&priv->lock, flags);
 597         priv->qos_data.def_qos_parm.qos_flags = 0;
 598
 599         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 600             !priv->qos_data.qos_cap.q_AP.txop_request)
 601                 priv->qos_data.def_qos_parm.qos_flags |=
 602                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 603         if (priv->qos_data.qos_active)
 604                 priv->qos_data.def_qos_parm.qos_flags |=
 605                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 606
 607         if (priv->current_ht_config.is_ht)
 608                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 609
 610         spin_unlock_irqrestore(&priv->lock, flags);
 611
 612         if (force || iwl_is_associated(priv)) {
 613                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 614                                 priv->qos_data.qos_active,
 615                                 priv->qos_data.def_qos_parm.qos_flags);
 616
 617                 iwl4965_send_qos_params_command(priv,
 618                                 &(priv->qos_data.def_qos_parm));
 619         }
 620 }
 621
 622 #define MAX_UCODE_BEACON_INTERVAL       4096
 623 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 624
 625 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 626 {
 627         u16 new_val = 0;
 628         u16 beacon_factor = 0;
 629
 630         beacon_factor =
 631             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 632                 / MAX_UCODE_BEACON_INTERVAL;
 633         new_val = beacon_val / beacon_factor;
 634
 635         return cpu_to_le16(new_val);
 636 }
 637
 638 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 639 {
 640         u64 interval_tm_unit;
 641         u64 tsf, result;
 642         unsigned long flags;
 643         struct ieee80211_conf *conf = NULL;
 644         u16 beacon_int = 0;
 645
 646         conf = ieee80211_get_hw_conf(priv->hw);
 647
 648         spin_lock_irqsave(&priv->lock, flags);
 649         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 650         priv->rxon_timing.timestamp.dw[0] =
 651                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 652
 653         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 654
 655         tsf = priv->timestamp;
 656
 657         beacon_int = priv->beacon_int;
 658         spin_unlock_irqrestore(&priv->lock, flags);
 659
 660         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 661                 if (beacon_int == 0) {
 662                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 663                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 664                 } else {
 665                         priv->rxon_timing.beacon_interval =
 666                                 cpu_to_le16(beacon_int);
 667                         priv->rxon_timing.beacon_interval =
 668                             iwl4965_adjust_beacon_interval(
 669                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 670                 }
 671
 672                 priv->rxon_timing.atim_window = 0;
 673         } else {
 674                 priv->rxon_timing.beacon_interval =
 675                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 676                 /* TODO: we need to get atim_window from upper stack
 677                  * for now we set to 0 */
 678                 priv->rxon_timing.atim_window = 0;
 679         }
 680
 681         interval_tm_unit =
 682                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 683         result = do_div(tsf, interval_tm_unit);
 684         priv->rxon_timing.beacon_init_val =
 685             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 686
 687         IWL_DEBUG_ASSOC
 688             ("beacon interval %d beacon timer %d beacon tim %d\n",
 689                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 690                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 691                 le16_to_cpu(priv->rxon_timing.atim_window));
 692 }
 693
 694 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 695                                    enum ieee80211_band band)
 696 {
 697         if (band == IEEE80211_BAND_5GHZ) {
 698                 priv->staging_rxon.flags &=
 699                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 700                       | RXON_FLG_CCK_MSK);
 701                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 702         } else {
 703                 /* Copied from iwl4965_post_associate() */
 704                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 705                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 706                 else
 707                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 708
 709                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 710                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 711
 712                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 713                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 714                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 715         }
 716 }
 717
 718 /*
 719  * initialize rxon structure with default values from eeprom
 720  */
 721 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 722 {
 723         const struct iwl_channel_info *ch_info;
 724
 725         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 726
 727         switch (priv->iw_mode) {
 728         case IEEE80211_IF_TYPE_AP:
 729                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 730                 break;
 731
 732         case IEEE80211_IF_TYPE_STA:
 733                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 734                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 735                 break;
 736
 737         case IEEE80211_IF_TYPE_IBSS:
 738                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 739                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 740                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 741                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 742                 break;
 743
 744         case IEEE80211_IF_TYPE_MNTR:
 745                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 746                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 747                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 748                 break;
 749         default:
 750                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 751                 break;
 752         }
 753
 754 #if 0
 755         /* TODO:  Figure out when short_preamble would be set and cache from
 756          * that */
 757         if (!hw_to_local(priv->hw)->short_preamble)
 758                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 759         else
 760                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 761 #endif
 762
 763         ch_info = iwl_get_channel_info(priv, priv->band,
 764                                        le16_to_cpu(priv->active_rxon.channel));
 765
 766         if (!ch_info)
 767                 ch_info = &priv->channel_info[0];
 768
 769         /*
 770          * in some case A channels are all non IBSS
 771          * in this case force B/G channel
 772          */
 773         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 774             !(is_channel_ibss(ch_info)))
 775                 ch_info = &priv->channel_info[0];
 776
 777         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 778         priv->band = ch_info->band;
 779
 780         iwl_set_flags_for_band(priv, priv->band);
 781
 782         priv->staging_rxon.ofdm_basic_rates =
 783             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 784         priv->staging_rxon.cck_basic_rates =
 785             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 786
 787         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 788                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 789         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 790         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 791         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 792         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 793         iwl_set_rxon_chain(priv);
 794 }
 795
 796 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 797 {
 798         priv->iw_mode = mode;
 799
 800         iwl4965_connection_init_rx_config(priv);
 801         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 802
 803         iwl_clear_stations_table(priv);
 804
 805         /* dont commit rxon if rf-kill is on*/
 806         if (!iwl_is_ready_rf(priv))
 807                 return -EAGAIN;
 808
 809         cancel_delayed_work(&priv->scan_check);
 810         if (iwl_scan_cancel_timeout(priv, 100)) {
 811                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 812                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 813                 return -EAGAIN;
 814         }
 815
 816         iwl4965_commit_rxon(priv);
 817
 818         return 0;
 819 }
 820
 821 static void iwl4965_set_rate(struct iwl_priv *priv)
 822 {
 823         const struct ieee80211_supported_band *hw = NULL;
 824         struct ieee80211_rate *rate;
 825         int i;
 826
 827         hw = iwl_get_hw_mode(priv, priv->band);
 828         if (!hw) {
 829                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 830                 return;
 831         }
 832
 833         priv->active_rate = 0;
 834         priv->active_rate_basic = 0;
 835
 836         for (i = 0; i < hw->n_bitrates; i++) {
 837                 rate = &(hw->bitrates[i]);
 838                 if (rate->hw_value < IWL_RATE_COUNT)
 839                         priv->active_rate |= (1 << rate->hw_value);
 840         }
 841
 842         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 843                        priv->active_rate, priv->active_rate_basic);
 844
 845         /*
 846          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 847          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 848          * OFDM
 849          */
 850         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 851                 priv->staging_rxon.cck_basic_rates =
 852                     ((priv->active_rate_basic &
 853                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 854         else
 855                 priv->staging_rxon.cck_basic_rates =
 856                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 857
 858         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 859                 priv->staging_rxon.ofdm_basic_rates =
 860                     ((priv->active_rate_basic &
 861                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 862                       IWL_FIRST_OFDM_RATE) & 0xFF;
 863         else
 864                 priv->staging_rxon.ofdm_basic_rates =
 865                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 866 }
 867
 868 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 869
 870 #include "iwl-spectrum.h"
 871
 872 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 873 #define BEACON_TIME_MASK_HIGH   0xFF000000
 874 #define TIME_UNIT               1024
 875
 876 /*
 877  * extended beacon time format
 878  * time in usec will be changed into a 32-bit value in 8:24 format
 879  * the high 1 byte is the beacon counts
 880  * the lower 3 bytes is the time in usec within one beacon interval
 881  */
 882
 883 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 884 {
 885         u32 quot;
 886         u32 rem;
 887         u32 interval = beacon_interval * 1024;
 888
 889         if (!interval || !usec)
 890                 return 0;
 891
 892         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 893         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 894
 895         return (quot << 24) + rem;
 896 }
 897
 898 /* base is usually what we get from ucode with each received frame,
 899  * the same as HW timer counter counting down
 900  */
 901
 902 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 903 {
 904         u32 base_low = base & BEACON_TIME_MASK_LOW;
 905         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 906         u32 interval = beacon_interval * TIME_UNIT;
 907         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 908             (addon & BEACON_TIME_MASK_HIGH);
 909
 910         if (base_low > addon_low)
 911                 res += base_low - addon_low;
 912         else if (base_low < addon_low) {
 913                 res += interval + base_low - addon_low;
 914                 res += (1 << 24);
 915         } else
 916                 res += (1 << 24);
 917
 918         return cpu_to_le32(res);
 919 }
 920
 921 static int iwl4965_get_measurement(struct iwl_priv *priv,
 922                                struct ieee80211_measurement_params *params,
 923                                u8 type)
 924 {
 925         struct iwl4965_spectrum_cmd spectrum;
 926         struct iwl_rx_packet *res;
 927         struct iwl_host_cmd cmd = {
 928                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 929                 .data = (void *)&spectrum,
 930                 .meta.flags = CMD_WANT_SKB,
 931         };
 932         u32 add_time = le64_to_cpu(params->start_time);
 933         int rc;
 934         int spectrum_resp_status;
 935         int duration = le16_to_cpu(params->duration);
 936
 937         if (iwl_is_associated(priv))
 938                 add_time =
 939                     iwl4965_usecs_to_beacons(
 940                         le64_to_cpu(params->start_time) - priv->last_tsf,
 941                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 942
 943         memset(&spectrum, 0, sizeof(spectrum));
 944
 945         spectrum.channel_count = cpu_to_le16(1);
 946         spectrum.flags =
 947             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 948         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 949         cmd.len = sizeof(spectrum);
 950         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 951
 952         if (iwl_is_associated(priv))
 953                 spectrum.start_time =
 954                     iwl4965_add_beacon_time(priv->last_beacon_time,
 955                                 add_time,
 956                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 957         else
 958                 spectrum.start_time = 0;
 959
 960         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 961         spectrum.channels[0].channel = params->channel;
 962         spectrum.channels[0].type = type;
 963         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 964                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 965                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 966
 967         rc = iwl_send_cmd_sync(priv, &cmd);
 968         if (rc)
 969                 return rc;
 970
 971         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 972         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 973                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 974                 rc = -EIO;
 975         }
 976
 977         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 978         switch (spectrum_resp_status) {
 979         case 0:         /* Command will be handled */
 980                 if (res->u.spectrum.id != 0xff) {
 981                         IWL_DEBUG_INFO
 982                             ("Replaced existing measurement: %d\n",
 983                              res->u.spectrum.id);
 984                         priv->measurement_status &= ~MEASUREMENT_READY;
 985                 }
 986                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 987                 rc = 0;
 988                 break;
 989
 990         case 1:         /* Command will not be handled */
 991                 rc = -EAGAIN;
 992                 break;
 993         }
 994
 995         dev_kfree_skb_any(cmd.meta.u.skb);
 996
 997         return rc;
 998 }
 999 #endif
1000
1001 /******************************************************************************
1002  *
1003  * Generic RX handler implementations
1004  *
1005  ******************************************************************************/
1006 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1007                                 struct iwl_rx_mem_buffer *rxb)
1008 {
1009         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1010         struct iwl_alive_resp *palive;
1011         struct delayed_work *pwork;
1012
1013         palive = &pkt->u.alive_frame;
1014
1015         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1016                        "0x%01X 0x%01X\n",
1017                        palive->is_valid, palive->ver_type,
1018                        palive->ver_subtype);
1019
1020         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1021                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1022                 memcpy(&priv->card_alive_init,
1023                        &pkt->u.alive_frame,
1024                        sizeof(struct iwl_init_alive_resp));
1025                 pwork = &priv->init_alive_start;
1026         } else {
1027                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1028                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1029                        sizeof(struct iwl_alive_resp));
1030                 pwork = &priv->alive_start;
1031         }
1032
1033         /* We delay the ALIVE response by 5ms to
1034          * give the HW RF Kill time to activate... */
1035         if (palive->is_valid == UCODE_VALID_OK)
1036                 queue_delayed_work(priv->workqueue, pwork,
1037                                    msecs_to_jiffies(5));
1038         else
1039                 IWL_WARNING("uCode did not respond OK.\n");
1040 }
1041
1042 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1043                                    struct iwl_rx_mem_buffer *rxb)
1044 {
1045         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1046
1047         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1048                 "seq 0x%04X ser 0x%08X\n",
1049                 le32_to_cpu(pkt->u.err_resp.error_type),
1050                 get_cmd_string(pkt->u.err_resp.cmd_id),
1051                 pkt->u.err_resp.cmd_id,
1052                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1053                 le32_to_cpu(pkt->u.err_resp.error_info));
1054 }
1055
1056 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1057
1058 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1059 {
1060         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1062         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1063         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1064                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1065         rxon->channel = csa->channel;
1066         priv->staging_rxon.channel = csa->channel;
1067 }
1068
1069 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1070                                           struct iwl_rx_mem_buffer *rxb)
1071 {
1072 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1073         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1074         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1075
1076         if (!report->state) {
1077                 IWL_DEBUG(IWL_DL_11H,
1078                         "Spectrum Measure Notification: Start\n");
1079                 return;
1080         }
1081
1082         memcpy(&priv->measure_report, report, sizeof(*report));
1083         priv->measurement_status |= MEASUREMENT_READY;
1084 #endif
1085 }
1086
1087 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1088                                       struct iwl_rx_mem_buffer *rxb)
1089 {
1090 #ifdef CONFIG_IWLWIFI_DEBUG
1091         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1092         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1093         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1094                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1095 #endif
1096 }
1097
1098 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1099                                              struct iwl_rx_mem_buffer *rxb)
1100 {
1101         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1102         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1103                         "notification for %s:\n",
1104                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1105         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1106 }
1107
1108 static void iwl4965_bg_beacon_update(struct work_struct *work)
1109 {
1110         struct iwl_priv *priv =
1111                 container_of(work, struct iwl_priv, beacon_update);
1112         struct sk_buff *beacon;
1113
1114         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1115         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1116
1117         if (!beacon) {
1118                 IWL_ERROR("update beacon failed\n");
1119                 return;
1120         }
1121
1122         mutex_lock(&priv->mutex);
1123         /* new beacon skb is allocated every time; dispose previous.*/
1124         if (priv->ibss_beacon)
1125                 dev_kfree_skb(priv->ibss_beacon);
1126
1127         priv->ibss_beacon = beacon;
1128         mutex_unlock(&priv->mutex);
1129
1130         iwl4965_send_beacon_cmd(priv);
1131 }
1132
1133 /**
1134  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1135  *
1136  * This callback is provided in order to send a statistics request.
1137  *
1138  * This timer function is continually reset to execute within
1139  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1140  * was received.  We need to ensure we receive the statistics in order
1141  * to update the temperature used for calibrating the TXPOWER.
1142  */
1143 static void iwl4965_bg_statistics_periodic(unsigned long data)
1144 {
1145         struct iwl_priv *priv = (struct iwl_priv *)data;
1146
1147         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1148                 return;
1149
1150         iwl_send_statistics_request(priv, CMD_ASYNC);
1151 }
1152
1153 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1154                                 struct iwl_rx_mem_buffer *rxb)
1155 {
1156 #ifdef CONFIG_IWLWIFI_DEBUG
1157         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1158         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1159         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1160
1161         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1162                 "tsf %d %d rate %d\n",
1163                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1164                 beacon->beacon_notify_hdr.failure_frame,
1165                 le32_to_cpu(beacon->ibss_mgr_status),
1166                 le32_to_cpu(beacon->high_tsf),
1167                 le32_to_cpu(beacon->low_tsf), rate);
1168 #endif
1169
1170         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1171             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1172                 queue_work(priv->workqueue, &priv->beacon_update);
1173 }
1174
1175 /* Handle notification from uCode that card's power state is changing
1176  * due to software, hardware, or critical temperature RFKILL */
1177 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1178                                     struct iwl_rx_mem_buffer *rxb)
1179 {
1180         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1181         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1182         unsigned long status = priv->status;
1183
1184         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1185                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1186                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1187
1188         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1189                      RF_CARD_DISABLED)) {
1190
1191                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1192                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1193
1194                 if (!iwl_grab_nic_access(priv)) {
1195                         iwl_write_direct32(
1196                                 priv, HBUS_TARG_MBX_C,
1197                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1198
1199                         iwl_release_nic_access(priv);
1200                 }
1201
1202                 if (!(flags & RXON_CARD_DISABLED)) {
1203                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1204                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1205                         if (!iwl_grab_nic_access(priv)) {
1206                                 iwl_write_direct32(
1207                                         priv, HBUS_TARG_MBX_C,
1208                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1209
1210                                 iwl_release_nic_access(priv);
1211                         }
1212                 }
1213
1214                 if (flags & RF_CARD_DISABLED) {
1215                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1216                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1217                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1218                         if (!iwl_grab_nic_access(priv))
1219                                 iwl_release_nic_access(priv);
1220                 }
1221         }
1222
1223         if (flags & HW_CARD_DISABLED)
1224                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1225         else
1226                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1227
1228
1229         if (flags & SW_CARD_DISABLED)
1230                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1231         else
1232                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1233
1234         if (!(flags & RXON_CARD_DISABLED))
1235                 iwl_scan_cancel(priv);
1236
1237         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1238              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1239             (test_bit(STATUS_RF_KILL_SW, &status) !=
1240              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1241                 queue_work(priv->workqueue, &priv->rf_kill);
1242         else
1243                 wake_up_interruptible(&priv->wait_command_queue);
1244 }
1245
1246 /**
1247  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1248  *
1249  * Setup the RX handlers for each of the reply types sent from the uCode
1250  * to the host.
1251  *
1252  * This function chains into the hardware specific files for them to setup
1253  * any hardware specific handlers as well.
1254  */
1255 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1256 {
1257         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1258         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1259         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1260         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1261             iwl4965_rx_spectrum_measure_notif;
1262         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1263         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1264             iwl4965_rx_pm_debug_statistics_notif;
1265         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1266
1267         /*
1268          * The same handler is used for both the REPLY to a discrete
1269          * statistics request from the host as well as for the periodic
1270          * statistics notifications (after received beacons) from the uCode.
1271          */
1272         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1273         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1274
1275         iwl_setup_rx_scan_handlers(priv);
1276
1277         /* status change handler */
1278         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1279
1280         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1281             iwl_rx_missed_beacon_notif;
1282         /* Rx handlers */
1283         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1284         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1285         /* block ack */
1286         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1287         /* Set up hardware specific Rx handlers */
1288         priv->cfg->ops->lib->rx_handler_setup(priv);
1289 }
1290
1291 /*
1292  * this should be called while priv->lock is locked
1293 */
1294 static void __iwl_rx_replenish(struct iwl_priv *priv)
1295 {
1296         iwl_rx_allocate(priv);
1297         iwl_rx_queue_restock(priv);
1298 }
1299
1300
1301 /**
1302  * iwl_rx_handle - Main entry function for receiving responses from uCode
1303  *
1304  * Uses the priv->rx_handlers callback function array to invoke
1305  * the appropriate handlers, including command responses,
1306  * frame-received notifications, and other notifications.
1307  */
1308 void iwl_rx_handle(struct iwl_priv *priv)
1309 {
1310         struct iwl_rx_mem_buffer *rxb;
1311         struct iwl_rx_packet *pkt;
1312         struct iwl_rx_queue *rxq = &priv->rxq;
1313         u32 r, i;
1314         int reclaim;
1315         unsigned long flags;
1316         u8 fill_rx = 0;
1317         u32 count = 8;
1318
1319         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1320          * buffer that the driver may process (last buffer filled by ucode). */
1321         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1322         i = rxq->read;
1323
1324         /* Rx interrupt, but nothing sent from uCode */
1325         if (i == r)
1326                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1327
1328         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1329                 fill_rx = 1;
1330
1331         while (i != r) {
1332                 rxb = rxq->queue[i];
1333
1334                 /* If an RXB doesn't have a Rx queue slot associated with it,
1335                  * then a bug has been introduced in the queue refilling
1336                  * routines -- catch it here */
1337                 BUG_ON(rxb == NULL);
1338
1339                 rxq->queue[i] = NULL;
1340
1341                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1342                                             priv->hw_params.rx_buf_size,
1343                                             PCI_DMA_FROMDEVICE);
1344                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1345
1346                 /* Reclaim a command buffer only if this packet is a response
1347                  *   to a (driver-originated) command.
1348                  * If the packet (e.g. Rx frame) originated from uCode,
1349                  *   there is no command buffer to reclaim.
1350                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1351                  *   but apparently a few don't get set; catch them here. */
1352                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1353                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1354                         (pkt->hdr.cmd != REPLY_RX) &&
1355                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1356                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1357                         (pkt->hdr.cmd != REPLY_TX);
1358
1359                 /* Based on type of command response or notification,
1360                  *   handle those that need handling via function in
1361                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1362                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1363                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1364                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1365                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1366                 } else {
1367                         /* No handling needed */
1368                         IWL_DEBUG(IWL_DL_RX,
1369                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1370                                 r, i, get_cmd_string(pkt->hdr.cmd),
1371                                 pkt->hdr.cmd);
1372                 }
1373
1374                 if (reclaim) {
1375                         /* Invoke any callbacks, transfer the skb to caller, and
1376                          * fire off the (possibly) blocking iwl_send_cmd()
1377                          * as we reclaim the driver command queue */
1378                         if (rxb && rxb->skb)
1379                                 iwl_tx_cmd_complete(priv, rxb);
1380                         else
1381                                 IWL_WARNING("Claim null rxb?\n");
1382                 }
1383
1384                 /* For now we just don't re-use anything.  We can tweak this
1385                  * later to try and re-use notification packets and SKBs that
1386                  * fail to Rx correctly */
1387                 if (rxb->skb != NULL) {
1388                         priv->alloc_rxb_skb--;
1389                         dev_kfree_skb_any(rxb->skb);
1390                         rxb->skb = NULL;
1391                 }
1392
1393                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1394                                  priv->hw_params.rx_buf_size,
1395                                  PCI_DMA_FROMDEVICE);
1396                 spin_lock_irqsave(&rxq->lock, flags);
1397                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1398                 spin_unlock_irqrestore(&rxq->lock, flags);
1399                 i = (i + 1) & RX_QUEUE_MASK;
1400                 /* If there are a lot of unused frames,
1401                  * restock the Rx queue so ucode wont assert. */
1402                 if (fill_rx) {
1403                         count++;
1404                         if (count >= 8) {
1405                                 priv->rxq.read = i;
1406                                 __iwl_rx_replenish(priv);
1407                                 count = 0;
1408                         }
1409                 }
1410         }
1411
1412         /* Backtrack one entry */
1413         priv->rxq.read = i;
1414         iwl_rx_queue_restock(priv);
1415 }
1416
1417 #ifdef CONFIG_IWLWIFI_DEBUG
1418 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1419 {
1420         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1421         DECLARE_MAC_BUF(mac);
1422
1423         IWL_DEBUG_RADIO("RX CONFIG:\n");
1424         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1425         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1426         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1427         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1428                         le32_to_cpu(rxon->filter_flags));
1429         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1430         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1431                         rxon->ofdm_basic_rates);
1432         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1433         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1434                         print_mac(mac, rxon->node_addr));
1435         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1436                         print_mac(mac, rxon->bssid_addr));
1437         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1438 }
1439 #endif
1440
1441 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1442 {
1443         IWL_DEBUG_ISR("Enabling interrupts\n");
1444         set_bit(STATUS_INT_ENABLED, &priv->status);
1445         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1446 }
1447
1448 /* call this function to flush any scheduled tasklet */
1449 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1450 {
1451         /* wait to make sure we flush pedding tasklet*/
1452         synchronize_irq(priv->pci_dev->irq);
1453         tasklet_kill(&priv->irq_tasklet);
1454 }
1455
1456 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1457 {
1458         clear_bit(STATUS_INT_ENABLED, &priv->status);
1459
1460         /* disable interrupts from uCode/NIC to host */
1461         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1462
1463         /* acknowledge/clear/reset any interrupts still pending
1464          * from uCode or flow handler (Rx/Tx DMA) */
1465         iwl_write32(priv, CSR_INT, 0xffffffff);
1466         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1467         IWL_DEBUG_ISR("Disabled interrupts\n");
1468 }
1469
1470
1471 /**
1472  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1473  */
1474 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1475 {
1476         /* Set the FW error flag -- cleared on iwl4965_down */
1477         set_bit(STATUS_FW_ERROR, &priv->status);
1478
1479         /* Cancel currently queued command. */
1480         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1481
1482 #ifdef CONFIG_IWLWIFI_DEBUG
1483         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1484                 iwl_dump_nic_error_log(priv);
1485                 iwl_dump_nic_event_log(priv);
1486                 iwl4965_print_rx_config_cmd(priv);
1487         }
1488 #endif
1489
1490         wake_up_interruptible(&priv->wait_command_queue);
1491
1492         /* Keep the restart process from trying to send host
1493          * commands by clearing the INIT status bit */
1494         clear_bit(STATUS_READY, &priv->status);
1495
1496         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1497                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1498                           "Restarting adapter due to uCode error.\n");
1499
1500                 if (iwl_is_associated(priv)) {
1501                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1502                                sizeof(priv->recovery_rxon));
1503                         priv->error_recovering = 1;
1504                 }
1505                 if (priv->cfg->mod_params->restart_fw)
1506                         queue_work(priv->workqueue, &priv->restart);
1507         }
1508 }
1509
1510 static void iwl4965_error_recovery(struct iwl_priv *priv)
1511 {
1512         unsigned long flags;
1513
1514         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1515                sizeof(priv->staging_rxon));
1516         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1517         iwl4965_commit_rxon(priv);
1518
1519         iwl_rxon_add_station(priv, priv->bssid, 1);
1520
1521         spin_lock_irqsave(&priv->lock, flags);
1522         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1523         priv->error_recovering = 0;
1524         spin_unlock_irqrestore(&priv->lock, flags);
1525 }
1526
1527 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1528 {
1529         u32 inta, handled = 0;
1530         u32 inta_fh;
1531         unsigned long flags;
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533         u32 inta_mask;
1534 #endif
1535
1536         spin_lock_irqsave(&priv->lock, flags);
1537
1538         /* Ack/clear/reset pending uCode interrupts.
1539          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1540          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1541         inta = iwl_read32(priv, CSR_INT);
1542         iwl_write32(priv, CSR_INT, inta);
1543
1544         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1545          * Any new interrupts that happen after this, either while we're
1546          * in this tasklet, or later, will show up in next ISR/tasklet. */
1547         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1548         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1549
1550 #ifdef CONFIG_IWLWIFI_DEBUG
1551         if (priv->debug_level & IWL_DL_ISR) {
1552                 /* just for debug */
1553                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1554                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1555                               inta, inta_mask, inta_fh);
1556         }
1557 #endif
1558
1559         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1560          * atomic, make sure that inta covers all the interrupts that
1561          * we've discovered, even if FH interrupt came in just after
1562          * reading CSR_INT. */
1563         if (inta_fh & CSR49_FH_INT_RX_MASK)
1564                 inta |= CSR_INT_BIT_FH_RX;
1565         if (inta_fh & CSR49_FH_INT_TX_MASK)
1566                 inta |= CSR_INT_BIT_FH_TX;
1567
1568         /* Now service all interrupt bits discovered above. */
1569         if (inta & CSR_INT_BIT_HW_ERR) {
1570                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1571
1572                 /* Tell the device to stop sending interrupts */
1573                 iwl4965_disable_interrupts(priv);
1574
1575                 iwl4965_irq_handle_error(priv);
1576
1577                 handled |= CSR_INT_BIT_HW_ERR;
1578
1579                 spin_unlock_irqrestore(&priv->lock, flags);
1580
1581                 return;
1582         }
1583
1584 #ifdef CONFIG_IWLWIFI_DEBUG
1585         if (priv->debug_level & (IWL_DL_ISR)) {
1586                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1587                 if (inta & CSR_INT_BIT_SCD)
1588                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1589                                       "the frame/frames.\n");
1590
1591                 /* Alive notification via Rx interrupt will do the real work */
1592                 if (inta & CSR_INT_BIT_ALIVE)
1593                         IWL_DEBUG_ISR("Alive interrupt\n");
1594         }
1595 #endif
1596         /* Safely ignore these bits for debug checks below */
1597         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1598
1599         /* HW RF KILL switch toggled */
1600         if (inta & CSR_INT_BIT_RF_KILL) {
1601                 int hw_rf_kill = 0;
1602                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1603                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1604                         hw_rf_kill = 1;
1605
1606                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1607                                 hw_rf_kill ? "disable radio":"enable radio");
1608
1609                 /* driver only loads ucode once setting the interface up.
1610                  * the driver as well won't allow loading if RFKILL is set
1611                  * therefore no need to restart the driver from this handler
1612                  */
1613                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1614                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1615
1616                 handled |= CSR_INT_BIT_RF_KILL;
1617         }
1618
1619         /* Chip got too hot and stopped itself */
1620         if (inta & CSR_INT_BIT_CT_KILL) {
1621                 IWL_ERROR("Microcode CT kill error detected.\n");
1622                 handled |= CSR_INT_BIT_CT_KILL;
1623         }
1624
1625         /* Error detected by uCode */
1626         if (inta & CSR_INT_BIT_SW_ERR) {
1627                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1628                           inta);
1629                 iwl4965_irq_handle_error(priv);
1630                 handled |= CSR_INT_BIT_SW_ERR;
1631         }
1632
1633         /* uCode wakes up after power-down sleep */
1634         if (inta & CSR_INT_BIT_WAKEUP) {
1635                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1636                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1637                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1638                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1639                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1640                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1641                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1642                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1643
1644                 handled |= CSR_INT_BIT_WAKEUP;
1645         }
1646
1647         /* All uCode command responses, including Tx command responses,
1648          * Rx "responses" (frame-received notification), and other
1649          * notifications from uCode come through here*/
1650         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1651                 iwl_rx_handle(priv);
1652                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1653         }
1654
1655         if (inta & CSR_INT_BIT_FH_TX) {
1656                 IWL_DEBUG_ISR("Tx interrupt\n");
1657                 handled |= CSR_INT_BIT_FH_TX;
1658                 /* FH finished to write, send event */
1659                 priv->ucode_write_complete = 1;
1660                 wake_up_interruptible(&priv->wait_command_queue);
1661         }
1662
1663         if (inta & ~handled)
1664                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1665
1666         if (inta & ~CSR_INI_SET_MASK) {
1667                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1668                          inta & ~CSR_INI_SET_MASK);
1669                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1670         }
1671
1672         /* Re-enable all interrupts */
1673         /* only Re-enable if diabled by irq */
1674         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1675                 iwl4965_enable_interrupts(priv);
1676
1677 #ifdef CONFIG_IWLWIFI_DEBUG
1678         if (priv->debug_level & (IWL_DL_ISR)) {
1679                 inta = iwl_read32(priv, CSR_INT);
1680                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1681                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1682                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1683                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1684         }
1685 #endif
1686         spin_unlock_irqrestore(&priv->lock, flags);
1687 }
1688
1689 static irqreturn_t iwl4965_isr(int irq, void *data)
1690 {
1691         struct iwl_priv *priv = data;
1692         u32 inta, inta_mask;
1693         u32 inta_fh;
1694         if (!priv)
1695                 return IRQ_NONE;
1696
1697         spin_lock(&priv->lock);
1698
1699         /* Disable (but don't clear!) interrupts here to avoid
1700          *    back-to-back ISRs and sporadic interrupts from our NIC.
1701          * If we have something to service, the tasklet will re-enable ints.
1702          * If we *don't* have something, we'll re-enable before leaving here. */
1703         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1704         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1705
1706         /* Discover which interrupts are active/pending */
1707         inta = iwl_read32(priv, CSR_INT);
1708         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1709
1710         /* Ignore interrupt if there's nothing in NIC to service.
1711          * This may be due to IRQ shared with another device,
1712          * or due to sporadic interrupts thrown from our NIC. */
1713         if (!inta && !inta_fh) {
1714                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1715                 goto none;
1716         }
1717
1718         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1719                 /* Hardware disappeared. It might have already raised
1720                  * an interrupt */
1721                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1722                 goto unplugged;
1723         }
1724
1725         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1726                       inta, inta_mask, inta_fh);
1727
1728         inta &= ~CSR_INT_BIT_SCD;
1729
1730         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1731         if (likely(inta || inta_fh))
1732                 tasklet_schedule(&priv->irq_tasklet);
1733
1734  unplugged:
1735         spin_unlock(&priv->lock);
1736         return IRQ_HANDLED;
1737
1738  none:
1739         /* re-enable interrupts here since we don't have anything to service. */
1740         /* only Re-enable if diabled by irq */
1741         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1742                 iwl4965_enable_interrupts(priv);
1743         spin_unlock(&priv->lock);
1744         return IRQ_NONE;
1745 }
1746
1747 /******************************************************************************
1748  *
1749  * uCode download functions
1750  *
1751  ******************************************************************************/
1752
1753 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1754 {
1755         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1756         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1757         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1758         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1759         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1760         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1761 }
1762
1763 static void iwl4965_nic_start(struct iwl_priv *priv)
1764 {
1765         /* Remove all resets to allow NIC to operate */
1766         iwl_write32(priv, CSR_RESET, 0);
1767 }
1768
1769
1770 /**
1771  * iwl4965_read_ucode - Read uCode images from disk file.
1772  *
1773  * Copy into buffers for card to fetch via bus-mastering
1774  */
1775 static int iwl4965_read_ucode(struct iwl_priv *priv)
1776 {
1777         struct iwl_ucode *ucode;
1778         int ret;
1779         const struct firmware *ucode_raw;
1780         const char *name = priv->cfg->fw_name;
1781         u8 *src;
1782         size_t len;
1783         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1784
1785         /* Ask kernel firmware_class module to get the boot firmware off disk.
1786          * request_firmware() is synchronous, file is in memory on return. */
1787         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1788         if (ret < 0) {
1789                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1790                                         name, ret);
1791                 goto error;
1792         }
1793
1794         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1795                        name, ucode_raw->size);
1796
1797         /* Make sure that we got at least our header! */
1798         if (ucode_raw->size < sizeof(*ucode)) {
1799                 IWL_ERROR("File size way too small!\n");
1800                 ret = -EINVAL;
1801                 goto err_release;
1802         }
1803
1804         /* Data from ucode file:  header followed by uCode images */
1805         ucode = (void *)ucode_raw->data;
1806
1807         ver = le32_to_cpu(ucode->ver);
1808         inst_size = le32_to_cpu(ucode->inst_size);
1809         data_size = le32_to_cpu(ucode->data_size);
1810         init_size = le32_to_cpu(ucode->init_size);
1811         init_data_size = le32_to_cpu(ucode->init_data_size);
1812         boot_size = le32_to_cpu(ucode->boot_size);
1813
1814         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1815         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1816                        inst_size);
1817         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1818                        data_size);
1819         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1820                        init_size);
1821         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1822                        init_data_size);
1823         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1824                        boot_size);
1825
1826         /* Verify size of file vs. image size info in file's header */
1827         if (ucode_raw->size < sizeof(*ucode) +
1828                 inst_size + data_size + init_size +
1829                 init_data_size + boot_size) {
1830
1831                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1832                                (int)ucode_raw->size);
1833                 ret = -EINVAL;
1834                 goto err_release;
1835         }
1836
1837         /* Verify that uCode images will fit in card's SRAM */
1838         if (inst_size > priv->hw_params.max_inst_size) {
1839                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1840                                inst_size);
1841                 ret = -EINVAL;
1842                 goto err_release;
1843         }
1844
1845         if (data_size > priv->hw_params.max_data_size) {
1846                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1847                                 data_size);
1848                 ret = -EINVAL;
1849                 goto err_release;
1850         }
1851         if (init_size > priv->hw_params.max_inst_size) {
1852                 IWL_DEBUG_INFO
1853                     ("uCode init instr len %d too large to fit in\n",
1854                       init_size);
1855                 ret = -EINVAL;
1856                 goto err_release;
1857         }
1858         if (init_data_size > priv->hw_params.max_data_size) {
1859                 IWL_DEBUG_INFO
1860                     ("uCode init data len %d too large to fit in\n",
1861                       init_data_size);
1862                 ret = -EINVAL;
1863                 goto err_release;
1864         }
1865         if (boot_size > priv->hw_params.max_bsm_size) {
1866                 IWL_DEBUG_INFO
1867                     ("uCode boot instr len %d too large to fit in\n",
1868                       boot_size);
1869                 ret = -EINVAL;
1870                 goto err_release;
1871         }
1872
1873         /* Allocate ucode buffers for card's bus-master loading ... */
1874
1875         /* Runtime instructions and 2 copies of data:
1876          * 1) unmodified from disk
1877          * 2) backup cache for save/restore during power-downs */
1878         priv->ucode_code.len = inst_size;
1879         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1880
1881         priv->ucode_data.len = data_size;
1882         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1883
1884         priv->ucode_data_backup.len = data_size;
1885         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1886
1887         /* Initialization instructions and data */
1888         if (init_size && init_data_size) {
1889                 priv->ucode_init.len = init_size;
1890                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1891
1892                 priv->ucode_init_data.len = init_data_size;
1893                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1894
1895                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1896                         goto err_pci_alloc;
1897         }
1898
1899         /* Bootstrap (instructions only, no data) */
1900         if (boot_size) {
1901                 priv->ucode_boot.len = boot_size;
1902                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1903
1904                 if (!priv->ucode_boot.v_addr)
1905                         goto err_pci_alloc;
1906         }
1907
1908         /* Copy images into buffers for card's bus-master reads ... */
1909
1910         /* Runtime instructions (first block of data in file) */
1911         src = &ucode->data[0];
1912         len = priv->ucode_code.len;
1913         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1914         memcpy(priv->ucode_code.v_addr, src, len);
1915         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1916                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1917
1918         /* Runtime data (2nd block)
1919          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1920         src = &ucode->data[inst_size];
1921         len = priv->ucode_data.len;
1922         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1923         memcpy(priv->ucode_data.v_addr, src, len);
1924         memcpy(priv->ucode_data_backup.v_addr, src, len);
1925
1926         /* Initialization instructions (3rd block) */
1927         if (init_size) {
1928                 src = &ucode->data[inst_size + data_size];
1929                 len = priv->ucode_init.len;
1930                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1931                                 len);
1932                 memcpy(priv->ucode_init.v_addr, src, len);
1933         }
1934
1935         /* Initialization data (4th block) */
1936         if (init_data_size) {
1937                 src = &ucode->data[inst_size + data_size + init_size];
1938                 len = priv->ucode_init_data.len;
1939                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1940                                len);
1941                 memcpy(priv->ucode_init_data.v_addr, src, len);
1942         }
1943
1944         /* Bootstrap instructions (5th block) */
1945         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1946         len = priv->ucode_boot.len;
1947         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1948         memcpy(priv->ucode_boot.v_addr, src, len);
1949
1950         /* We have our copies now, allow OS release its copies */
1951         release_firmware(ucode_raw);
1952         return 0;
1953
1954  err_pci_alloc:
1955         IWL_ERROR("failed to allocate pci memory\n");
1956         ret = -ENOMEM;
1957         iwl4965_dealloc_ucode_pci(priv);
1958
1959  err_release:
1960         release_firmware(ucode_raw);
1961
1962  error:
1963         return ret;
1964 }
1965
1966 /**
1967  * iwl_alive_start - called after REPLY_ALIVE notification received
1968  *                   from protocol/runtime uCode (initialization uCode's
1969  *                   Alive gets handled by iwl_init_alive_start()).
1970  */
1971 static void iwl_alive_start(struct iwl_priv *priv)
1972 {
1973         int ret = 0;
1974
1975         IWL_DEBUG_INFO("Runtime Alive received.\n");
1976
1977         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1978                 /* We had an error bringing up the hardware, so take it
1979                  * all the way back down so we can try again */
1980                 IWL_DEBUG_INFO("Alive failed.\n");
1981                 goto restart;
1982         }
1983
1984         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1985          * This is a paranoid check, because we would not have gotten the
1986          * "runtime" alive if code weren't properly loaded.  */
1987         if (iwl_verify_ucode(priv)) {
1988                 /* Runtime instruction load was bad;
1989                  * take it all the way back down so we can try again */
1990                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1991                 goto restart;
1992         }
1993
1994         iwl_clear_stations_table(priv);
1995         ret = priv->cfg->ops->lib->alive_notify(priv);
1996         if (ret) {
1997                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1998                             ret);
1999                 goto restart;
2000         }
2001
2002         /* After the ALIVE response, we can send host commands to 4965 uCode */
2003         set_bit(STATUS_ALIVE, &priv->status);
2004
2005         if (iwl_is_rfkill(priv))
2006                 return;
2007
2008         ieee80211_wake_queues(priv->hw);
2009
2010         priv->active_rate = priv->rates_mask;
2011         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2012
2013         if (iwl_is_associated(priv)) {
2014                 struct iwl_rxon_cmd *active_rxon =
2015                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2016
2017                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2018                        sizeof(priv->staging_rxon));
2019                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2020         } else {
2021                 /* Initialize our rx_config data */
2022                 iwl4965_connection_init_rx_config(priv);
2023                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2024         }
2025
2026         /* Configure Bluetooth device coexistence support */
2027         iwl4965_send_bt_config(priv);
2028
2029         iwl_reset_run_time_calib(priv);
2030
2031         /* Configure the adapter for unassociated operation */
2032         iwl4965_commit_rxon(priv);
2033
2034         /* At this point, the NIC is initialized and operational */
2035         iwl_rf_kill_ct_config(priv);
2036
2037         iwl_leds_register(priv);
2038
2039         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2040         set_bit(STATUS_READY, &priv->status);
2041         wake_up_interruptible(&priv->wait_command_queue);
2042
2043         if (priv->error_recovering)
2044                 iwl4965_error_recovery(priv);
2045
2046         iwl_power_update_mode(priv, 1);
2047         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2048
2049         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2050                 iwl4965_set_mode(priv, priv->iw_mode);
2051
2052         return;
2053
2054  restart:
2055         queue_work(priv->workqueue, &priv->restart);
2056 }
2057
2058 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2059
2060 static void __iwl4965_down(struct iwl_priv *priv)
2061 {
2062         unsigned long flags;
2063         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2064
2065         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2066
2067         if (!exit_pending)
2068                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2069
2070         iwl_leds_unregister(priv);
2071
2072         iwl_clear_stations_table(priv);
2073
2074         /* Unblock any waiting calls */
2075         wake_up_interruptible_all(&priv->wait_command_queue);
2076
2077         /* Wipe out the EXIT_PENDING status bit if we are not actually
2078          * exiting the module */
2079         if (!exit_pending)
2080                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2081
2082         /* stop and reset the on-board processor */
2083         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2084
2085         /* tell the device to stop sending interrupts */
2086         spin_lock_irqsave(&priv->lock, flags);
2087         iwl4965_disable_interrupts(priv);
2088         spin_unlock_irqrestore(&priv->lock, flags);
2089         iwl_synchronize_irq(priv);
2090
2091         if (priv->mac80211_registered)
2092                 ieee80211_stop_queues(priv->hw);
2093
2094         /* If we have not previously called iwl4965_init() then
2095          * clear all bits but the RF Kill and SUSPEND bits and return */
2096         if (!iwl_is_init(priv)) {
2097                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2098                                         STATUS_RF_KILL_HW |
2099                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2100                                         STATUS_RF_KILL_SW |
2101                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2102                                         STATUS_GEO_CONFIGURED |
2103                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2104                                         STATUS_IN_SUSPEND |
2105                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2106                                         STATUS_EXIT_PENDING;
2107                 goto exit;
2108         }
2109
2110         /* ...otherwise clear out all the status bits but the RF Kill and
2111          * SUSPEND bits and continue taking the NIC down. */
2112         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2113                                 STATUS_RF_KILL_HW |
2114                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2115                                 STATUS_RF_KILL_SW |
2116                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2117                                 STATUS_GEO_CONFIGURED |
2118                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2119                                 STATUS_IN_SUSPEND |
2120                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2121                                 STATUS_FW_ERROR |
2122                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2123                                 STATUS_EXIT_PENDING;
2124
2125         spin_lock_irqsave(&priv->lock, flags);
2126         iwl_clear_bit(priv, CSR_GP_CNTRL,
2127                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2128         spin_unlock_irqrestore(&priv->lock, flags);
2129
2130         iwl_txq_ctx_stop(priv);
2131         iwl_rxq_stop(priv);
2132
2133         spin_lock_irqsave(&priv->lock, flags);
2134         if (!iwl_grab_nic_access(priv)) {
2135                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2136                                          APMG_CLK_VAL_DMA_CLK_RQT);
2137                 iwl_release_nic_access(priv);
2138         }
2139         spin_unlock_irqrestore(&priv->lock, flags);
2140
2141         udelay(5);
2142
2143         /* FIXME: apm_ops.suspend(priv) */
2144         priv->cfg->ops->lib->apm_ops.reset(priv);
2145         priv->cfg->ops->lib->free_shared_mem(priv);
2146
2147  exit:
2148         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2149
2150         if (priv->ibss_beacon)
2151                 dev_kfree_skb(priv->ibss_beacon);
2152         priv->ibss_beacon = NULL;
2153
2154         /* clear out any free frames */
2155         iwl_clear_free_frames(priv);
2156 }
2157
2158 static void iwl4965_down(struct iwl_priv *priv)
2159 {
2160         mutex_lock(&priv->mutex);
2161         __iwl4965_down(priv);
2162         mutex_unlock(&priv->mutex);
2163
2164         iwl_cancel_deferred_work(priv);
2165 }
2166
2167 #define MAX_HW_RESTARTS 5
2168
2169 static int __iwl4965_up(struct iwl_priv *priv)
2170 {
2171         int i;
2172         int ret;
2173
2174         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2175                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2176                 return -EIO;
2177         }
2178
2179         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2180                 IWL_ERROR("ucode not available for device bringup\n");
2181                 return -EIO;
2182         }
2183
2184         /* If platform's RF_KILL switch is NOT set to KILL */
2185         if (iwl_read32(priv, CSR_GP_CNTRL) &
2186                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2187                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2188         else
2189                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2190
2191         if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2192             iwl_is_rfkill(priv)) {
2193                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2194                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2195                 return -ENODEV;
2196         }
2197
2198         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2199
2200         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2201         if (ret) {
2202                 IWL_ERROR("Unable to allocate shared memory\n");
2203                 return ret;
2204         }
2205
2206         ret = iwl_hw_nic_init(priv);
2207         if (ret) {
2208                 IWL_ERROR("Unable to init nic\n");
2209                 return ret;
2210         }
2211
2212         /* make sure rfkill handshake bits are cleared */
2213         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2214         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2215                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2216
2217         /* clear (again), then enable host interrupts */
2218         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2219         iwl4965_enable_interrupts(priv);
2220
2221         /* really make sure rfkill handshake bits are cleared */
2222         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2223         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2224
2225         /* Copy original ucode data image from disk into backup cache.
2226          * This will be used to initialize the on-board processor's
2227          * data SRAM for a clean start when the runtime program first loads. */
2228         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2229                priv->ucode_data.len);
2230
2231         /* We return success when we resume from suspend and rf_kill is on. */
2232         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2233             test_bit(STATUS_RF_KILL_SW, &priv->status))
2234                 return 0;
2235
2236         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2237
2238                 iwl_clear_stations_table(priv);
2239
2240                 /* load bootstrap state machine,
2241                  * load bootstrap program into processor's memory,
2242                  * prepare to load the "initialize" uCode */
2243                 ret = priv->cfg->ops->lib->load_ucode(priv);
2244
2245                 if (ret) {
2246                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2247                         continue;
2248                 }
2249
2250                 /* Clear out the uCode error bit if it is set */
2251                 clear_bit(STATUS_FW_ERROR, &priv->status);
2252
2253                 /* start card; "initialize" will load runtime ucode */
2254                 iwl4965_nic_start(priv);
2255
2256                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2257
2258                 return 0;
2259         }
2260
2261         set_bit(STATUS_EXIT_PENDING, &priv->status);
2262         __iwl4965_down(priv);
2263         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2264
2265         /* tried to restart and config the device for as long as our
2266          * patience could withstand */
2267         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2268         return -EIO;
2269 }
2270
2271
2272 /*****************************************************************************
2273  *
2274  * Workqueue callbacks
2275  *
2276  *****************************************************************************/
2277
2278 static void iwl_bg_init_alive_start(struct work_struct *data)
2279 {
2280         struct iwl_priv *priv =
2281             container_of(data, struct iwl_priv, init_alive_start.work);
2282
2283         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2284                 return;
2285
2286         mutex_lock(&priv->mutex);
2287         priv->cfg->ops->lib->init_alive_start(priv);
2288         mutex_unlock(&priv->mutex);
2289 }
2290
2291 static void iwl_bg_alive_start(struct work_struct *data)
2292 {
2293         struct iwl_priv *priv =
2294             container_of(data, struct iwl_priv, alive_start.work);
2295
2296         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2297                 return;
2298
2299         mutex_lock(&priv->mutex);
2300         iwl_alive_start(priv);
2301         mutex_unlock(&priv->mutex);
2302 }
2303
2304 static void iwl4965_bg_rf_kill(struct work_struct *work)
2305 {
2306         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2307
2308         wake_up_interruptible(&priv->wait_command_queue);
2309
2310         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2311                 return;
2312
2313         mutex_lock(&priv->mutex);
2314
2315         if (!iwl_is_rfkill(priv)) {
2316                 IWL_DEBUG(IWL_DL_RF_KILL,
2317                           "HW and/or SW RF Kill no longer active, restarting "
2318                           "device\n");
2319                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2320                         queue_work(priv->workqueue, &priv->restart);
2321         } else {
2322                 /* make sure mac80211 stop sending Tx frame */
2323                 if (priv->mac80211_registered)
2324                         ieee80211_stop_queues(priv->hw);
2325
2326                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2327                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2328                                           "disabled by SW switch\n");
2329                 else
2330                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2331                                     "Kill switch must be turned off for "
2332                                     "wireless networking to work.\n");
2333         }
2334         mutex_unlock(&priv->mutex);
2335         iwl_rfkill_set_hw_state(priv);
2336 }
2337
2338 static void iwl4965_bg_set_monitor(struct work_struct *work)
2339 {
2340         struct iwl_priv *priv = container_of(work,
2341                                 struct iwl_priv, set_monitor);
2342         int ret;
2343
2344         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2345
2346         mutex_lock(&priv->mutex);
2347
2348         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2349
2350         if (ret) {
2351                 if (ret == -EAGAIN)
2352                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2353                 else
2354                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2355         }
2356
2357         mutex_unlock(&priv->mutex);
2358 }
2359
2360 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2361 {
2362         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2363                         run_time_calib_work);
2364
2365         mutex_lock(&priv->mutex);
2366
2367         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2368             test_bit(STATUS_SCANNING, &priv->status)) {
2369                 mutex_unlock(&priv->mutex);
2370                 return;
2371         }
2372
2373         if (priv->start_calib) {
2374                 iwl_chain_noise_calibration(priv, &priv->statistics);
2375
2376                 iwl_sensitivity_calibration(priv, &priv->statistics);
2377         }
2378
2379         mutex_unlock(&priv->mutex);
2380         return;
2381 }
2382
2383 static void iwl4965_bg_up(struct work_struct *data)
2384 {
2385         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2386
2387         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2388                 return;
2389
2390         mutex_lock(&priv->mutex);
2391         __iwl4965_up(priv);
2392         mutex_unlock(&priv->mutex);
2393         iwl_rfkill_set_hw_state(priv);
2394 }
2395
2396 static void iwl4965_bg_restart(struct work_struct *data)
2397 {
2398         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2399
2400         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2401                 return;
2402
2403         iwl4965_down(priv);
2404         queue_work(priv->workqueue, &priv->up);
2405 }
2406
2407 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2408 {
2409         struct iwl_priv *priv =
2410             container_of(data, struct iwl_priv, rx_replenish);
2411
2412         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2413                 return;
2414
2415         mutex_lock(&priv->mutex);
2416         iwl_rx_replenish(priv);
2417         mutex_unlock(&priv->mutex);
2418 }
2419
2420 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2421
2422 static void iwl4965_post_associate(struct iwl_priv *priv)
2423 {
2424         struct ieee80211_conf *conf = NULL;
2425         int ret = 0;
2426         DECLARE_MAC_BUF(mac);
2427
2428         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2429                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2430                 return;
2431         }
2432
2433         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2434                         priv->assoc_id,
2435                         print_mac(mac, priv->active_rxon.bssid_addr));
2436
2437
2438         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2439                 return;
2440
2441
2442         if (!priv->vif || !priv->is_open)
2443                 return;
2444
2445         iwl_scan_cancel_timeout(priv, 200);
2446
2447         conf = ieee80211_get_hw_conf(priv->hw);
2448
2449         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2450         iwl4965_commit_rxon(priv);
2451
2452         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2453         iwl4965_setup_rxon_timing(priv);
2454         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2455                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2456         if (ret)
2457                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2458                             "Attempting to continue.\n");
2459
2460         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2461
2462         if (priv->current_ht_config.is_ht)
2463                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2464
2465         iwl_set_rxon_chain(priv);
2466         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2467
2468         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2469                         priv->assoc_id, priv->beacon_int);
2470
2471         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2472                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2473         else
2474                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2475
2476         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2477                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2478                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2479                 else
2480                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2481
2482                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2483                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2484
2485         }
2486
2487         iwl4965_commit_rxon(priv);
2488
2489         switch (priv->iw_mode) {
2490         case IEEE80211_IF_TYPE_STA:
2491                 break;
2492
2493         case IEEE80211_IF_TYPE_IBSS:
2494
2495                 /* assume default assoc id */
2496                 priv->assoc_id = 1;
2497
2498                 iwl_rxon_add_station(priv, priv->bssid, 0);
2499                 iwl4965_send_beacon_cmd(priv);
2500
2501                 break;
2502
2503         default:
2504                 IWL_ERROR("%s Should not be called in %d mode\n",
2505                                 __FUNCTION__, priv->iw_mode);
2506                 break;
2507         }
2508
2509         /* Enable Rx differential gain and sensitivity calibrations */
2510         iwl_chain_noise_reset(priv);
2511         priv->start_calib = 1;
2512
2513         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2514                 priv->assoc_station_added = 1;
2515
2516         iwl4965_activate_qos(priv, 0);
2517
2518         iwl_power_update_mode(priv, 0);
2519         /* we have just associated, don't start scan too early */
2520         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2521 }
2522
2523
2524 static void iwl4965_bg_post_associate(struct work_struct *data)
2525 {
2526         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2527                                              post_associate.work);
2528
2529         mutex_lock(&priv->mutex);
2530         iwl4965_post_associate(priv);
2531         mutex_unlock(&priv->mutex);
2532
2533 }
2534
2535 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2536
2537 static void iwl_bg_scan_completed(struct work_struct *work)
2538 {
2539         struct iwl_priv *priv =
2540             container_of(work, struct iwl_priv, scan_completed);
2541
2542         IWL_DEBUG_SCAN("SCAN complete scan\n");
2543
2544         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2545                 return;
2546
2547         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2548                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2549
2550         ieee80211_scan_completed(priv->hw);
2551
2552         /* Since setting the TXPOWER may have been deferred while
2553          * performing the scan, fire one off */
2554         mutex_lock(&priv->mutex);
2555         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2556         mutex_unlock(&priv->mutex);
2557 }
2558
2559 /*****************************************************************************
2560  *
2561  * mac80211 entry point functions
2562  *
2563  *****************************************************************************/
2564
2565 #define UCODE_READY_TIMEOUT     (4 * HZ)
2566
2567 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2568 {
2569         struct iwl_priv *priv = hw->priv;
2570         int ret;
2571
2572         IWL_DEBUG_MAC80211("enter\n");
2573
2574         if (pci_enable_device(priv->pci_dev)) {
2575                 IWL_ERROR("Fail to pci_enable_device\n");
2576                 return -ENODEV;
2577         }
2578         pci_restore_state(priv->pci_dev);
2579         pci_enable_msi(priv->pci_dev);
2580
2581         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2582                           DRV_NAME, priv);
2583         if (ret) {
2584                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2585                 goto out_disable_msi;
2586         }
2587
2588         /* we should be verifying the device is ready to be opened */
2589         mutex_lock(&priv->mutex);
2590
2591         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2592         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2593          * ucode filename and max sizes are card-specific. */
2594
2595         if (!priv->ucode_code.len) {
2596                 ret = iwl4965_read_ucode(priv);
2597                 if (ret) {
2598                         IWL_ERROR("Could not read microcode: %d\n", ret);
2599                         mutex_unlock(&priv->mutex);
2600                         goto out_release_irq;
2601                 }
2602         }
2603
2604         ret = __iwl4965_up(priv);
2605
2606         mutex_unlock(&priv->mutex);
2607
2608         iwl_rfkill_set_hw_state(priv);
2609
2610         if (ret)
2611                 goto out_release_irq;
2612
2613         IWL_DEBUG_INFO("Start UP work done.\n");
2614
2615         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2616                 return 0;
2617
2618         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2619          * mac80211 will not be run successfully. */
2620         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2621                         test_bit(STATUS_READY, &priv->status),
2622                         UCODE_READY_TIMEOUT);
2623         if (!ret) {
2624                 if (!test_bit(STATUS_READY, &priv->status)) {
2625                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2626                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2627                         ret = -ETIMEDOUT;
2628                         goto out_release_irq;
2629                 }
2630         }
2631
2632         priv->is_open = 1;
2633         IWL_DEBUG_MAC80211("leave\n");
2634         return 0;
2635
2636 out_release_irq:
2637         free_irq(priv->pci_dev->irq, priv);
2638 out_disable_msi:
2639         pci_disable_msi(priv->pci_dev);
2640         pci_disable_device(priv->pci_dev);
2641         priv->is_open = 0;
2642         IWL_DEBUG_MAC80211("leave - failed\n");
2643         return ret;
2644 }
2645
2646 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2647 {
2648         struct iwl_priv *priv = hw->priv;
2649
2650         IWL_DEBUG_MAC80211("enter\n");
2651
2652         if (!priv->is_open) {
2653                 IWL_DEBUG_MAC80211("leave - skip\n");
2654                 return;
2655         }
2656
2657         priv->is_open = 0;
2658
2659         if (iwl_is_ready_rf(priv)) {
2660                 /* stop mac, cancel any scan request and clear
2661                  * RXON_FILTER_ASSOC_MSK BIT
2662                  */
2663                 mutex_lock(&priv->mutex);
2664                 iwl_scan_cancel_timeout(priv, 100);
2665                 cancel_delayed_work(&priv->post_associate);
2666                 mutex_unlock(&priv->mutex);
2667         }
2668
2669         iwl4965_down(priv);
2670
2671         flush_workqueue(priv->workqueue);
2672         free_irq(priv->pci_dev->irq, priv);
2673         pci_disable_msi(priv->pci_dev);
2674         pci_save_state(priv->pci_dev);
2675         pci_disable_device(priv->pci_dev);
2676
2677         IWL_DEBUG_MAC80211("leave\n");
2678 }
2679
2680 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2681 {
2682         struct iwl_priv *priv = hw->priv;
2683
2684         IWL_DEBUG_MAC80211("enter\n");
2685
2686         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2687                 IWL_DEBUG_MAC80211("leave - monitor\n");
2688                 dev_kfree_skb_any(skb);
2689                 return 0;
2690         }
2691
2692         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2693                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2694
2695         if (iwl_tx_skb(priv, skb))
2696                 dev_kfree_skb_any(skb);
2697
2698         IWL_DEBUG_MAC80211("leave\n");
2699         return 0;
2700 }
2701
2702 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2703                                  struct ieee80211_if_init_conf *conf)
2704 {
2705         struct iwl_priv *priv = hw->priv;
2706         unsigned long flags;
2707         DECLARE_MAC_BUF(mac);
2708
2709         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2710
2711         if (priv->vif) {
2712                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2713                 return -EOPNOTSUPP;
2714         }
2715
2716         spin_lock_irqsave(&priv->lock, flags);
2717         priv->vif = conf->vif;
2718
2719         spin_unlock_irqrestore(&priv->lock, flags);
2720
2721         mutex_lock(&priv->mutex);
2722
2723         if (conf->mac_addr) {
2724                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2725                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2726         }
2727
2728         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2729                 /* we are not ready, will run again when ready */
2730                 set_bit(STATUS_MODE_PENDING, &priv->status);
2731
2732         mutex_unlock(&priv->mutex);
2733
2734         IWL_DEBUG_MAC80211("leave\n");
2735         return 0;
2736 }
2737
2738 /**
2739  * iwl4965_mac_config - mac80211 config callback
2740  *
2741  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2742  * be set inappropriately and the driver currently sets the hardware up to
2743  * use it whenever needed.
2744  */
2745 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2746 {
2747         struct iwl_priv *priv = hw->priv;
2748         const struct iwl_channel_info *ch_info;
2749         unsigned long flags;
2750         int ret = 0;
2751         u16 channel;
2752
2753         mutex_lock(&priv->mutex);
2754         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2755
2756         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2757
2758         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2759                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2760                 goto out;
2761         }
2762
2763         if (!conf->radio_enabled)
2764                 iwl_radio_kill_sw_disable_radio(priv);
2765
2766         if (!iwl_is_ready(priv)) {
2767                 IWL_DEBUG_MAC80211("leave - not ready\n");
2768                 ret = -EIO;
2769                 goto out;
2770         }
2771
2772         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2773                      test_bit(STATUS_SCANNING, &priv->status))) {
2774                 IWL_DEBUG_MAC80211("leave - scanning\n");
2775                 set_bit(STATUS_CONF_PENDING, &priv->status);
2776                 mutex_unlock(&priv->mutex);
2777                 return 0;
2778         }
2779
2780         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2781         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2782         if (!is_channel_valid(ch_info)) {
2783                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2784                 ret = -EINVAL;
2785                 goto out;
2786         }
2787
2788         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2789             !is_channel_ibss(ch_info)) {
2790                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2791                         conf->channel->hw_value, conf->channel->band);
2792                 ret = -EINVAL;
2793                 goto out;
2794         }
2795
2796         spin_lock_irqsave(&priv->lock, flags);
2797
2798         /* if we are switching from ht to 2.4 clear flags
2799          * from any ht related info since 2.4 does not
2800          * support ht */
2801         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2802 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2803             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2804 #endif
2805         )
2806                 priv->staging_rxon.flags = 0;
2807
2808         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2809
2810         iwl_set_flags_for_band(priv, conf->channel->band);
2811
2812         /* The list of supported rates and rate mask can be different
2813          * for each band; since the band may have changed, reset
2814          * the rate mask to what mac80211 lists */
2815         iwl4965_set_rate(priv);
2816
2817         spin_unlock_irqrestore(&priv->lock, flags);
2818
2819 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2820         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2821                 iwl4965_hw_channel_switch(priv, conf->channel);
2822                 goto out;
2823         }
2824 #endif
2825
2826         if (!conf->radio_enabled) {
2827                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2828                 goto out;
2829         }
2830
2831         if (iwl_is_rfkill(priv)) {
2832                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2833                 ret = -EIO;
2834                 goto out;
2835         }
2836
2837         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2838                            priv->tx_power_user_lmt, conf->power_level);
2839
2840         iwl_set_tx_power(priv, conf->power_level, false);
2841
2842         iwl4965_set_rate(priv);
2843
2844         if (memcmp(&priv->active_rxon,
2845                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2846                 iwl4965_commit_rxon(priv);
2847         else
2848                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2849
2850         IWL_DEBUG_MAC80211("leave\n");
2851
2852 out:
2853         clear_bit(STATUS_CONF_PENDING, &priv->status);
2854         mutex_unlock(&priv->mutex);
2855         return ret;
2856 }
2857
2858 static void iwl4965_config_ap(struct iwl_priv *priv)
2859 {
2860         int ret = 0;
2861
2862         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2863                 return;
2864
2865         /* The following should be done only at AP bring up */
2866         if (!(iwl_is_associated(priv))) {
2867
2868                 /* RXON - unassoc (to set timing command) */
2869                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2870                 iwl4965_commit_rxon(priv);
2871
2872                 /* RXON Timing */
2873                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2874                 iwl4965_setup_rxon_timing(priv);
2875                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2876                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2877                 if (ret)
2878                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2879                                         "Attempting to continue.\n");
2880
2881                 iwl_set_rxon_chain(priv);
2882
2883                 /* FIXME: what should be the assoc_id for AP? */
2884                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2885                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2886                         priv->staging_rxon.flags |=
2887                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2888                 else
2889                         priv->staging_rxon.flags &=
2890                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2891
2892                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2893                         if (priv->assoc_capability &
2894                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2895                                 priv->staging_rxon.flags |=
2896                                         RXON_FLG_SHORT_SLOT_MSK;
2897                         else
2898                                 priv->staging_rxon.flags &=
2899                                         ~RXON_FLG_SHORT_SLOT_MSK;
2900
2901                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2902                                 priv->staging_rxon.flags &=
2903                                         ~RXON_FLG_SHORT_SLOT_MSK;
2904                 }
2905                 /* restore RXON assoc */
2906                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2907                 iwl4965_commit_rxon(priv);
2908                 iwl4965_activate_qos(priv, 1);
2909                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2910         }
2911         iwl4965_send_beacon_cmd(priv);
2912
2913         /* FIXME - we need to add code here to detect a totally new
2914          * configuration, reset the AP, unassoc, rxon timing, assoc,
2915          * clear sta table, add BCAST sta... */
2916 }
2917
2918 /* temporary */
2919 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2920
2921 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2922                                         struct ieee80211_vif *vif,
2923                                     struct ieee80211_if_conf *conf)
2924 {
2925         struct iwl_priv *priv = hw->priv;
2926         DECLARE_MAC_BUF(mac);
2927         unsigned long flags;
2928         int rc;
2929
2930         if (conf == NULL)
2931                 return -EIO;
2932
2933         if (priv->vif != vif) {
2934                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2935                 return 0;
2936         }
2937
2938         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2939             conf->changed & IEEE80211_IFCC_BEACON) {
2940                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2941                 if (!beacon)
2942                         return -ENOMEM;
2943                 rc = iwl4965_mac_beacon_update(hw, beacon);
2944                 if (rc)
2945                         return rc;
2946         }
2947
2948         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2949             (!conf->ssid_len)) {
2950                 IWL_DEBUG_MAC80211
2951                     ("Leaving in AP mode because HostAPD is not ready.\n");
2952                 return 0;
2953         }
2954
2955         if (!iwl_is_alive(priv))
2956                 return -EAGAIN;
2957
2958         mutex_lock(&priv->mutex);
2959
2960         if (conf->bssid)
2961                 IWL_DEBUG_MAC80211("bssid: %s\n",
2962                                    print_mac(mac, conf->bssid));
2963
2964 /*
2965  * very dubious code was here; the probe filtering flag is never set:
2966  *
2967         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2968             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2969  */
2970
2971         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2972                 if (!conf->bssid) {
2973                         conf->bssid = priv->mac_addr;
2974                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2975                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2976                                            print_mac(mac, conf->bssid));
2977                 }
2978                 if (priv->ibss_beacon)
2979                         dev_kfree_skb(priv->ibss_beacon);
2980
2981                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2982         }
2983
2984         if (iwl_is_rfkill(priv))
2985                 goto done;
2986
2987         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2988             !is_multicast_ether_addr(conf->bssid)) {
2989                 /* If there is currently a HW scan going on in the background
2990                  * then we need to cancel it else the RXON below will fail. */
2991                 if (iwl_scan_cancel_timeout(priv, 100)) {
2992                         IWL_WARNING("Aborted scan still in progress "
2993                                     "after 100ms\n");
2994                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2995                         mutex_unlock(&priv->mutex);
2996                         return -EAGAIN;
2997                 }
2998                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2999
3000                 /* TODO: Audit driver for usage of these members and see
3001                  * if mac80211 deprecates them (priv->bssid looks like it
3002                  * shouldn't be there, but I haven't scanned the IBSS code
3003                  * to verify) - jpk */
3004                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3005
3006                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3007                         iwl4965_config_ap(priv);
3008                 else {
3009                         rc = iwl4965_commit_rxon(priv);
3010                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3011                                 iwl_rxon_add_station(
3012                                         priv, priv->active_rxon.bssid_addr, 1);
3013                 }
3014
3015         } else {
3016                 iwl_scan_cancel_timeout(priv, 100);
3017                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3018                 iwl4965_commit_rxon(priv);
3019         }
3020
3021  done:
3022         spin_lock_irqsave(&priv->lock, flags);
3023         if (!conf->ssid_len)
3024                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3025         else
3026                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3027
3028         priv->essid_len = conf->ssid_len;
3029         spin_unlock_irqrestore(&priv->lock, flags);
3030
3031         IWL_DEBUG_MAC80211("leave\n");
3032         mutex_unlock(&priv->mutex);
3033
3034         return 0;
3035 }
3036
3037 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3038                                  unsigned int changed_flags,
3039                                  unsigned int *total_flags,
3040                                  int mc_count, struct dev_addr_list *mc_list)
3041 {
3042         struct iwl_priv *priv = hw->priv;
3043
3044         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3045                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3046                                    IEEE80211_IF_TYPE_MNTR,
3047                                    changed_flags, *total_flags);
3048                 /* queue work 'cuz mac80211 is holding a lock which
3049                  * prevents us from issuing (synchronous) f/w cmds */
3050                 queue_work(priv->workqueue, &priv->set_monitor);
3051         }
3052         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3053                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3054 }
3055
3056 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3057                                      struct ieee80211_if_init_conf *conf)
3058 {
3059         struct iwl_priv *priv = hw->priv;
3060
3061         IWL_DEBUG_MAC80211("enter\n");
3062
3063         mutex_lock(&priv->mutex);
3064
3065         if (iwl_is_ready_rf(priv)) {
3066                 iwl_scan_cancel_timeout(priv, 100);
3067                 cancel_delayed_work(&priv->post_associate);
3068                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3069                 iwl4965_commit_rxon(priv);
3070         }
3071         if (priv->vif == conf->vif) {
3072                 priv->vif = NULL;
3073                 memset(priv->bssid, 0, ETH_ALEN);
3074                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3075                 priv->essid_len = 0;
3076         }
3077         mutex_unlock(&priv->mutex);
3078
3079         IWL_DEBUG_MAC80211("leave\n");
3080
3081 }
3082
3083 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3084 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3085                                      struct ieee80211_vif *vif,
3086                                      struct ieee80211_bss_conf *bss_conf,
3087                                      u32 changes)
3088 {
3089         struct iwl_priv *priv = hw->priv;
3090
3091         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3092
3093         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3094                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3095                                    bss_conf->use_short_preamble);
3096                 if (bss_conf->use_short_preamble)
3097                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3098                 else
3099                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3100         }
3101
3102         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3103                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3104                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3105                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3106                 else
3107                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3108         }
3109
3110         if (changes & BSS_CHANGED_HT) {
3111                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3112                 iwl4965_ht_conf(priv, bss_conf);
3113                 iwl_set_rxon_chain(priv);
3114         }
3115
3116         if (changes & BSS_CHANGED_ASSOC) {
3117                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3118                 /* This should never happen as this function should
3119                  * never be called from interrupt context. */
3120                 if (WARN_ON_ONCE(in_interrupt()))
3121                         return;
3122                 if (bss_conf->assoc) {
3123                         priv->assoc_id = bss_conf->aid;
3124                         priv->beacon_int = bss_conf->beacon_int;
3125                         priv->timestamp = bss_conf->timestamp;
3126                         priv->assoc_capability = bss_conf->assoc_capability;
3127                         priv->next_scan_jiffies = jiffies +
3128                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3129                         mutex_lock(&priv->mutex);
3130                         iwl4965_post_associate(priv);
3131                         mutex_unlock(&priv->mutex);
3132                 } else {
3133                         priv->assoc_id = 0;
3134                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3135                 }
3136         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3137                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3138                         iwl_send_rxon_assoc(priv);
3139         }
3140
3141 }
3142
3143 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3144 {
3145         int rc = 0;
3146         unsigned long flags;
3147         struct iwl_priv *priv = hw->priv;
3148
3149         IWL_DEBUG_MAC80211("enter\n");
3150
3151         mutex_lock(&priv->mutex);
3152         spin_lock_irqsave(&priv->lock, flags);
3153
3154         if (!iwl_is_ready_rf(priv)) {
3155                 rc = -EIO;
3156                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3157                 goto out_unlock;
3158         }
3159
3160         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3161                 rc = -EIO;
3162                 IWL_ERROR("ERROR: APs don't scan\n");
3163                 goto out_unlock;
3164         }
3165
3166         /* we don't schedule scan within next_scan_jiffies period */
3167         if (priv->next_scan_jiffies &&
3168                         time_after(priv->next_scan_jiffies, jiffies)) {
3169                 rc = -EAGAIN;
3170                 goto out_unlock;
3171         }
3172         /* if we just finished scan ask for delay */
3173         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3174                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3175                 rc = -EAGAIN;
3176                 goto out_unlock;
3177         }
3178         if (len) {
3179                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3180                                iwl_escape_essid(ssid, len), (int)len);
3181
3182                 priv->one_direct_scan = 1;
3183                 priv->direct_ssid_len = (u8)
3184                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3185                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3186         } else
3187                 priv->one_direct_scan = 0;
3188
3189         rc = iwl_scan_initiate(priv);
3190
3191         IWL_DEBUG_MAC80211("leave\n");
3192
3193 out_unlock:
3194         spin_unlock_irqrestore(&priv->lock, flags);
3195         mutex_unlock(&priv->mutex);
3196
3197         return rc;
3198 }
3199
3200 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3201                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3202                         u32 iv32, u16 *phase1key)
3203 {
3204         struct iwl_priv *priv = hw->priv;
3205         u8 sta_id = IWL_INVALID_STATION;
3206         unsigned long flags;
3207         __le16 key_flags = 0;
3208         int i;
3209         DECLARE_MAC_BUF(mac);
3210
3211         IWL_DEBUG_MAC80211("enter\n");
3212
3213         sta_id = iwl_find_station(priv, addr);
3214         if (sta_id == IWL_INVALID_STATION) {
3215                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3216                                    print_mac(mac, addr));
3217                 return;
3218         }
3219
3220         iwl_scan_cancel_timeout(priv, 100);
3221
3222         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3223         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3224         key_flags &= ~STA_KEY_FLG_INVALID;
3225
3226         if (sta_id == priv->hw_params.bcast_sta_id)
3227                 key_flags |= STA_KEY_MULTICAST_MSK;
3228
3229         spin_lock_irqsave(&priv->sta_lock, flags);
3230
3231         priv->stations[sta_id].sta.key.key_flags = key_flags;
3232         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3233
3234         for (i = 0; i < 5; i++)
3235                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3236                         cpu_to_le16(phase1key[i]);
3237
3238         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3239         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3240
3241         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3242
3243         spin_unlock_irqrestore(&priv->sta_lock, flags);
3244
3245         IWL_DEBUG_MAC80211("leave\n");
3246 }
3247
3248 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3249                            const u8 *local_addr, const u8 *addr,
3250                            struct ieee80211_key_conf *key)
3251 {
3252         struct iwl_priv *priv = hw->priv;
3253         DECLARE_MAC_BUF(mac);
3254         int ret = 0;
3255         u8 sta_id = IWL_INVALID_STATION;
3256         u8 is_default_wep_key = 0;
3257
3258         IWL_DEBUG_MAC80211("enter\n");
3259
3260         if (priv->hw_params.sw_crypto) {
3261                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3262                 return -EOPNOTSUPP;
3263         }
3264
3265         if (is_zero_ether_addr(addr))
3266                 /* only support pairwise keys */
3267                 return -EOPNOTSUPP;
3268
3269         sta_id = iwl_find_station(priv, addr);
3270         if (sta_id == IWL_INVALID_STATION) {
3271                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3272                                    print_mac(mac, addr));
3273                 return -EINVAL;
3274
3275         }
3276
3277         mutex_lock(&priv->mutex);
3278         iwl_scan_cancel_timeout(priv, 100);
3279         mutex_unlock(&priv->mutex);
3280
3281         /* If we are getting WEP group key and we didn't receive any key mapping
3282          * so far, we are in legacy wep mode (group key only), otherwise we are
3283          * in 1X mode.
3284          * In legacy wep mode, we use another host command to the uCode */
3285         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3286                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3287                 if (cmd == SET_KEY)
3288                         is_default_wep_key = !priv->key_mapping_key;
3289                 else
3290                         is_default_wep_key =
3291                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3292         }
3293
3294         switch (cmd) {
3295         case SET_KEY:
3296                 if (is_default_wep_key)
3297                         ret = iwl_set_default_wep_key(priv, key);
3298                 else
3299                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3300
3301                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3302                 break;
3303         case DISABLE_KEY:
3304                 if (is_default_wep_key)
3305                         ret = iwl_remove_default_wep_key(priv, key);
3306                 else
3307                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3308
3309                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3310                 break;
3311         default:
3312                 ret = -EINVAL;
3313         }
3314
3315         IWL_DEBUG_MAC80211("leave\n");
3316
3317         return ret;
3318 }
3319
3320 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3321                            const struct ieee80211_tx_queue_params *params)
3322 {
3323         struct iwl_priv *priv = hw->priv;
3324         unsigned long flags;
3325         int q;
3326
3327         IWL_DEBUG_MAC80211("enter\n");
3328
3329         if (!iwl_is_ready_rf(priv)) {
3330                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3331                 return -EIO;
3332         }
3333
3334         if (queue >= AC_NUM) {
3335                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3336                 return 0;
3337         }
3338
3339         if (!priv->qos_data.qos_enable) {
3340                 priv->qos_data.qos_active = 0;
3341                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3342                 return 0;
3343         }
3344         q = AC_NUM - 1 - queue;
3345
3346         spin_lock_irqsave(&priv->lock, flags);
3347
3348         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3349         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3350         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3351         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3352                         cpu_to_le16((params->txop * 32));
3353
3354         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3355         priv->qos_data.qos_active = 1;
3356
3357         spin_unlock_irqrestore(&priv->lock, flags);
3358
3359         mutex_lock(&priv->mutex);
3360         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3361                 iwl4965_activate_qos(priv, 1);
3362         else if (priv->assoc_id && iwl_is_associated(priv))
3363                 iwl4965_activate_qos(priv, 0);
3364
3365         mutex_unlock(&priv->mutex);
3366
3367         IWL_DEBUG_MAC80211("leave\n");
3368         return 0;
3369 }
3370
3371 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3372                                 struct ieee80211_tx_queue_stats *stats)
3373 {
3374         struct iwl_priv *priv = hw->priv;
3375         int i, avail;
3376         struct iwl_tx_queue *txq;
3377         struct iwl_queue *q;
3378         unsigned long flags;
3379
3380         IWL_DEBUG_MAC80211("enter\n");
3381
3382         if (!iwl_is_ready_rf(priv)) {
3383                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3384                 return -EIO;
3385         }
3386
3387         spin_lock_irqsave(&priv->lock, flags);
3388
3389         for (i = 0; i < AC_NUM; i++) {
3390                 txq = &priv->txq[i];
3391                 q = &txq->q;
3392                 avail = iwl_queue_space(q);
3393
3394                 stats[i].len = q->n_window - avail;
3395                 stats[i].limit = q->n_window - q->high_mark;
3396                 stats[i].count = q->n_window;
3397
3398         }
3399         spin_unlock_irqrestore(&priv->lock, flags);
3400
3401         IWL_DEBUG_MAC80211("leave\n");
3402
3403         return 0;
3404 }
3405
3406 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3407                              struct ieee80211_low_level_stats *stats)
3408 {
3409         struct iwl_priv *priv = hw->priv;
3410
3411         priv = hw->priv;
3412         IWL_DEBUG_MAC80211("enter\n");
3413         IWL_DEBUG_MAC80211("leave\n");
3414
3415         return 0;
3416 }
3417
3418 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3419 {
3420         struct iwl_priv *priv = hw->priv;
3421         unsigned long flags;
3422
3423         mutex_lock(&priv->mutex);
3424         IWL_DEBUG_MAC80211("enter\n");
3425
3426         spin_lock_irqsave(&priv->lock, flags);
3427         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3428         spin_unlock_irqrestore(&priv->lock, flags);
3429
3430         iwl_reset_qos(priv);
3431
3432         cancel_delayed_work(&priv->post_associate);
3433
3434         spin_lock_irqsave(&priv->lock, flags);
3435         priv->assoc_id = 0;
3436         priv->assoc_capability = 0;
3437         priv->assoc_station_added = 0;
3438
3439         /* new association get rid of ibss beacon skb */
3440         if (priv->ibss_beacon)
3441                 dev_kfree_skb(priv->ibss_beacon);
3442
3443         priv->ibss_beacon = NULL;
3444
3445         priv->beacon_int = priv->hw->conf.beacon_int;
3446         priv->timestamp = 0;
3447         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3448                 priv->beacon_int = 0;
3449
3450         spin_unlock_irqrestore(&priv->lock, flags);
3451
3452         if (!iwl_is_ready_rf(priv)) {
3453                 IWL_DEBUG_MAC80211("leave - not ready\n");
3454                 mutex_unlock(&priv->mutex);
3455                 return;
3456         }
3457
3458         /* we are restarting association process
3459          * clear RXON_FILTER_ASSOC_MSK bit
3460          */
3461         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3462                 iwl_scan_cancel_timeout(priv, 100);
3463                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3464                 iwl4965_commit_rxon(priv);
3465         }
3466
3467         iwl_power_update_mode(priv, 0);
3468
3469         /* Per mac80211.h: This is only used in IBSS mode... */
3470         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3471
3472                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3473                 mutex_unlock(&priv->mutex);
3474                 return;
3475         }
3476
3477         iwl4965_set_rate(priv);
3478
3479         mutex_unlock(&priv->mutex);
3480
3481         IWL_DEBUG_MAC80211("leave\n");
3482 }
3483
3484 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3485 {
3486         struct iwl_priv *priv = hw->priv;
3487         unsigned long flags;
3488         __le64 timestamp;
3489
3490         mutex_lock(&priv->mutex);
3491         IWL_DEBUG_MAC80211("enter\n");
3492
3493         if (!iwl_is_ready_rf(priv)) {
3494                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3495                 mutex_unlock(&priv->mutex);
3496                 return -EIO;
3497         }
3498
3499         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3500                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3501                 mutex_unlock(&priv->mutex);
3502                 return -EIO;
3503         }
3504
3505         spin_lock_irqsave(&priv->lock, flags);
3506
3507         if (priv->ibss_beacon)
3508                 dev_kfree_skb(priv->ibss_beacon);
3509
3510         priv->ibss_beacon = skb;
3511
3512         priv->assoc_id = 0;
3513         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3514         priv->timestamp = le64_to_cpu(timestamp) +  (priv->beacon_int * 1000);
3515
3516         IWL_DEBUG_MAC80211("leave\n");
3517         spin_unlock_irqrestore(&priv->lock, flags);
3518
3519         iwl_reset_qos(priv);
3520
3521         iwl4965_post_associate(priv);
3522
3523         mutex_unlock(&priv->mutex);
3524
3525         return 0;
3526 }
3527
3528 /*****************************************************************************
3529  *
3530  * sysfs attributes
3531  *
3532  *****************************************************************************/
3533
3534 #ifdef CONFIG_IWLWIFI_DEBUG
3535
3536 /*
3537  * The following adds a new attribute to the sysfs representation
3538  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3539  * used for controlling the debug level.
3540  *
3541  * See the level definitions in iwl for details.
3542  */
3543
3544 static ssize_t show_debug_level(struct device *d,
3545                                 struct device_attribute *attr, char *buf)
3546 {
3547         struct iwl_priv *priv = d->driver_data;
3548
3549         return sprintf(buf, "0x%08X\n", priv->debug_level);
3550 }
3551 static ssize_t store_debug_level(struct device *d,
3552                                 struct device_attribute *attr,
3553                                  const char *buf, size_t count)
3554 {
3555         struct iwl_priv *priv = d->driver_data;
3556         char *p = (char *)buf;
3557         u32 val;
3558
3559         val = simple_strtoul(p, &p, 0);
3560         if (p == buf)
3561                 printk(KERN_INFO DRV_NAME
3562                        ": %s is not in hex or decimal form.\n", buf);
3563         else
3564                 priv->debug_level = val;
3565
3566         return strnlen(buf, count);
3567 }
3568
3569 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3570                         show_debug_level, store_debug_level);
3571
3572
3573 #endif /* CONFIG_IWLWIFI_DEBUG */
3574
3575
3576 static ssize_t show_version(struct device *d,
3577                                 struct device_attribute *attr, char *buf)
3578 {
3579         struct iwl_priv *priv = d->driver_data;
3580         struct iwl_alive_resp *palive = &priv->card_alive;
3581         ssize_t pos = 0;
3582         u16 eeprom_ver;
3583
3584         if (palive->is_valid)
3585                 pos += sprintf(buf + pos,
3586                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3587                                 "fw type: 0x%01X 0x%01X\n",
3588                                 palive->ucode_major, palive->ucode_minor,
3589                                 palive->sw_rev[0], palive->sw_rev[1],
3590                                 palive->ver_type, palive->ver_subtype);
3591         else
3592                 pos += sprintf(buf + pos, "fw not loaded\n");
3593
3594         if (priv->eeprom) {
3595                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3596                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3597                                  eeprom_ver);
3598         } else {
3599                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3600         }
3601
3602         return pos;
3603 }
3604
3605 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3606
3607 static ssize_t show_temperature(struct device *d,
3608                                 struct device_attribute *attr, char *buf)
3609 {
3610         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3611
3612         if (!iwl_is_alive(priv))
3613                 return -EAGAIN;
3614
3615         return sprintf(buf, "%d\n", priv->temperature);
3616 }
3617
3618 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3619
3620 static ssize_t show_rs_window(struct device *d,
3621                               struct device_attribute *attr,
3622                               char *buf)
3623 {
3624         struct iwl_priv *priv = d->driver_data;
3625         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3626 }
3627 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3628
3629 static ssize_t show_tx_power(struct device *d,
3630                              struct device_attribute *attr, char *buf)
3631 {
3632         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3633         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3634 }
3635
3636 static ssize_t store_tx_power(struct device *d,
3637                               struct device_attribute *attr,
3638                               const char *buf, size_t count)
3639 {
3640         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3641         char *p = (char *)buf;
3642         u32 val;
3643
3644         val = simple_strtoul(p, &p, 10);
3645         if (p == buf)
3646                 printk(KERN_INFO DRV_NAME
3647                        ": %s is not in decimal form.\n", buf);
3648         else
3649                 iwl_set_tx_power(priv, val, false);
3650
3651         return count;
3652 }
3653
3654 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3655
3656 static ssize_t show_flags(struct device *d,
3657                           struct device_attribute *attr, char *buf)
3658 {
3659         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3660
3661         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3662 }
3663
3664 static ssize_t store_flags(struct device *d,
3665                            struct device_attribute *attr,
3666                            const char *buf, size_t count)
3667 {
3668         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3669         u32 flags = simple_strtoul(buf, NULL, 0);
3670
3671         mutex_lock(&priv->mutex);
3672         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3673                 /* Cancel any currently running scans... */
3674                 if (iwl_scan_cancel_timeout(priv, 100))
3675                         IWL_WARNING("Could not cancel scan.\n");
3676                 else {
3677                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3678                                        flags);
3679                         priv->staging_rxon.flags = cpu_to_le32(flags);
3680                         iwl4965_commit_rxon(priv);
3681                 }
3682         }
3683         mutex_unlock(&priv->mutex);
3684
3685         return count;
3686 }
3687
3688 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3689
3690 static ssize_t show_filter_flags(struct device *d,
3691                                  struct device_attribute *attr, char *buf)
3692 {
3693         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3694
3695         return sprintf(buf, "0x%04X\n",
3696                 le32_to_cpu(priv->active_rxon.filter_flags));
3697 }
3698
3699 static ssize_t store_filter_flags(struct device *d,
3700                                   struct device_attribute *attr,
3701                                   const char *buf, size_t count)
3702 {
3703         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3704         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3705
3706         mutex_lock(&priv->mutex);
3707         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3708                 /* Cancel any currently running scans... */
3709                 if (iwl_scan_cancel_timeout(priv, 100))
3710                         IWL_WARNING("Could not cancel scan.\n");
3711                 else {
3712                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3713                                        "0x%04X\n", filter_flags);
3714                         priv->staging_rxon.filter_flags =
3715                                 cpu_to_le32(filter_flags);
3716                         iwl4965_commit_rxon(priv);
3717                 }
3718         }
3719         mutex_unlock(&priv->mutex);
3720
3721         return count;
3722 }
3723
3724 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3725                    store_filter_flags);
3726
3727 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3728
3729 static ssize_t show_measurement(struct device *d,
3730                                 struct device_attribute *attr, char *buf)
3731 {
3732         struct iwl_priv *priv = dev_get_drvdata(d);
3733         struct iwl4965_spectrum_notification measure_report;
3734         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3735         u8 *data = (u8 *) & measure_report;
3736         unsigned long flags;
3737
3738         spin_lock_irqsave(&priv->lock, flags);
3739         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3740                 spin_unlock_irqrestore(&priv->lock, flags);
3741                 return 0;
3742         }
3743         memcpy(&measure_report, &priv->measure_report, size);
3744         priv->measurement_status = 0;
3745         spin_unlock_irqrestore(&priv->lock, flags);
3746
3747         while (size && (PAGE_SIZE - len)) {
3748                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3749                                    PAGE_SIZE - len, 1);
3750                 len = strlen(buf);
3751                 if (PAGE_SIZE - len)
3752                         buf[len++] = '\n';
3753
3754                 ofs += 16;
3755                 size -= min(size, 16U);
3756         }
3757
3758         return len;
3759 }
3760
3761 static ssize_t store_measurement(struct device *d,
3762                                  struct device_attribute *attr,
3763                                  const char *buf, size_t count)
3764 {
3765         struct iwl_priv *priv = dev_get_drvdata(d);
3766         struct ieee80211_measurement_params params = {
3767                 .channel = le16_to_cpu(priv->active_rxon.channel),
3768                 .start_time = cpu_to_le64(priv->last_tsf),
3769                 .duration = cpu_to_le16(1),
3770         };
3771         u8 type = IWL_MEASURE_BASIC;
3772         u8 buffer[32];
3773         u8 channel;
3774
3775         if (count) {
3776                 char *p = buffer;
3777                 strncpy(buffer, buf, min(sizeof(buffer), count));
3778                 channel = simple_strtoul(p, NULL, 0);
3779                 if (channel)
3780                         params.channel = channel;
3781
3782                 p = buffer;
3783                 while (*p && *p != ' ')
3784                         p++;
3785                 if (*p)
3786                         type = simple_strtoul(p + 1, NULL, 0);
3787         }
3788
3789         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3790                        "channel %d (for '%s')\n", type, params.channel, buf);
3791         iwl4965_get_measurement(priv, &params, type);
3792
3793         return count;
3794 }
3795
3796 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3797                    show_measurement, store_measurement);
3798 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3799
3800 static ssize_t store_retry_rate(struct device *d,
3801                                 struct device_attribute *attr,
3802                                 const char *buf, size_t count)
3803 {
3804         struct iwl_priv *priv = dev_get_drvdata(d);
3805
3806         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3807         if (priv->retry_rate <= 0)
3808                 priv->retry_rate = 1;
3809
3810         return count;
3811 }
3812
3813 static ssize_t show_retry_rate(struct device *d,
3814                                struct device_attribute *attr, char *buf)
3815 {
3816         struct iwl_priv *priv = dev_get_drvdata(d);
3817         return sprintf(buf, "%d", priv->retry_rate);
3818 }
3819
3820 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3821                    store_retry_rate);
3822
3823 static ssize_t store_power_level(struct device *d,
3824                                  struct device_attribute *attr,
3825                                  const char *buf, size_t count)
3826 {
3827         struct iwl_priv *priv = dev_get_drvdata(d);
3828         int rc;
3829         int mode;
3830
3831         mode = simple_strtoul(buf, NULL, 0);
3832         mutex_lock(&priv->mutex);
3833
3834         if (!iwl_is_ready(priv)) {
3835                 rc = -EAGAIN;
3836                 goto out;
3837         }
3838
3839         rc = iwl_power_set_user_mode(priv, mode);
3840         if (rc) {
3841                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3842                 goto out;
3843         }
3844         rc = count;
3845
3846  out:
3847         mutex_unlock(&priv->mutex);
3848         return rc;
3849 }
3850
3851 #define MAX_WX_STRING 80
3852
3853 /* Values are in microsecond */
3854 static const s32 timeout_duration[] = {
3855         350000,
3856         250000,
3857         75000,
3858         37000,
3859         25000,
3860 };
3861 static const s32 period_duration[] = {
3862         400000,
3863         700000,
3864         1000000,
3865         1000000,
3866         1000000
3867 };
3868
3869 static ssize_t show_power_level(struct device *d,
3870                                 struct device_attribute *attr, char *buf)
3871 {
3872         struct iwl_priv *priv = dev_get_drvdata(d);
3873         int level = priv->power_data.power_mode;
3874         char *p = buf;
3875
3876         p += sprintf(p, "%d ", level);
3877         switch (level) {
3878         case IWL_POWER_MODE_CAM:
3879         case IWL_POWER_AC:
3880                 p += sprintf(p, "(AC)");
3881                 break;
3882         case IWL_POWER_BATTERY:
3883                 p += sprintf(p, "(BATTERY)");
3884                 break;
3885         default:
3886                 p += sprintf(p,
3887                              "(Timeout %dms, Period %dms)",
3888                              timeout_duration[level - 1] / 1000,
3889                              period_duration[level - 1] / 1000);
3890         }
3891 /*
3892         if (!(priv->power_mode & IWL_POWER_ENABLED))
3893                 p += sprintf(p, " OFF\n");
3894         else
3895                 p += sprintf(p, " \n");
3896 */
3897         p += sprintf(p, " \n");
3898         return (p - buf + 1);
3899 }
3900
3901 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3902                    store_power_level);
3903
3904 static ssize_t show_channels(struct device *d,
3905                              struct device_attribute *attr, char *buf)
3906 {
3907
3908         struct iwl_priv *priv = dev_get_drvdata(d);
3909         struct ieee80211_channel *channels = NULL;
3910         const struct ieee80211_supported_band *supp_band = NULL;
3911         int len = 0, i;
3912         int count = 0;
3913
3914         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3915                 return -EAGAIN;
3916
3917         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3918         channels = supp_band->channels;
3919         count = supp_band->n_channels;
3920
3921         len += sprintf(&buf[len],
3922                         "Displaying %d channels in 2.4GHz band "
3923                         "(802.11bg):\n", count);
3924
3925         for (i = 0; i < count; i++)
3926                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3927                                 ieee80211_frequency_to_channel(
3928                                 channels[i].center_freq),
3929                                 channels[i].max_power,
3930                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3931                                 " (IEEE 802.11h required)" : "",
3932                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3933                                 || (channels[i].flags &
3934                                 IEEE80211_CHAN_RADAR)) ? "" :
3935                                 ", IBSS",
3936                                 channels[i].flags &
3937                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3938                                 "passive only" : "active/passive");
3939
3940         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3941         channels = supp_band->channels;
3942         count = supp_band->n_channels;
3943
3944         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3945                         "(802.11a):\n", count);
3946
3947         for (i = 0; i < count; i++)
3948                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3949                                 ieee80211_frequency_to_channel(
3950                                 channels[i].center_freq),
3951                                 channels[i].max_power,
3952                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3953                                 " (IEEE 802.11h required)" : "",
3954                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3955                                 || (channels[i].flags &
3956                                 IEEE80211_CHAN_RADAR)) ? "" :
3957                                 ", IBSS",
3958                                 channels[i].flags &
3959                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3960                                 "passive only" : "active/passive");
3961
3962         return len;
3963 }
3964
3965 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3966
3967 static ssize_t show_statistics(struct device *d,
3968                                struct device_attribute *attr, char *buf)
3969 {
3970         struct iwl_priv *priv = dev_get_drvdata(d);
3971         u32 size = sizeof(struct iwl_notif_statistics);
3972         u32 len = 0, ofs = 0;
3973         u8 *data = (u8 *) & priv->statistics;
3974         int rc = 0;
3975
3976         if (!iwl_is_alive(priv))
3977                 return -EAGAIN;
3978
3979         mutex_lock(&priv->mutex);
3980         rc = iwl_send_statistics_request(priv, 0);
3981         mutex_unlock(&priv->mutex);
3982
3983         if (rc) {
3984                 len = sprintf(buf,
3985                               "Error sending statistics request: 0x%08X\n", rc);
3986                 return len;
3987         }
3988
3989         while (size && (PAGE_SIZE - len)) {
3990                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3991                                    PAGE_SIZE - len, 1);
3992                 len = strlen(buf);
3993                 if (PAGE_SIZE - len)
3994                         buf[len++] = '\n';
3995
3996                 ofs += 16;
3997                 size -= min(size, 16U);
3998         }
3999
4000         return len;
4001 }
4002
4003 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4004
4005 static ssize_t show_status(struct device *d,
4006                            struct device_attribute *attr, char *buf)
4007 {
4008         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4009         if (!iwl_is_alive(priv))
4010                 return -EAGAIN;
4011         return sprintf(buf, "0x%08x\n", (int)priv->status);
4012 }
4013
4014 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4015
4016 /*****************************************************************************
4017  *
4018  * driver setup and teardown
4019  *
4020  *****************************************************************************/
4021
4022 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4023 {
4024         priv->workqueue = create_workqueue(DRV_NAME);
4025
4026         init_waitqueue_head(&priv->wait_command_queue);
4027
4028         INIT_WORK(&priv->up, iwl4965_bg_up);
4029         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4030         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4031         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4032         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4033         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4034         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4035         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4036         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4037         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4038
4039         /* FIXME : remove when resolved PENDING */
4040         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4041         iwl_setup_scan_deferred_work(priv);
4042
4043         if (priv->cfg->ops->lib->setup_deferred_work)
4044                 priv->cfg->ops->lib->setup_deferred_work(priv);
4045
4046         init_timer(&priv->statistics_periodic);
4047         priv->statistics_periodic.data = (unsigned long)priv;
4048         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4049
4050         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4051                      iwl4965_irq_tasklet, (unsigned long)priv);
4052 }
4053
4054 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4055 {
4056         if (priv->cfg->ops->lib->cancel_deferred_work)
4057                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4058
4059         cancel_delayed_work_sync(&priv->init_alive_start);
4060         cancel_delayed_work(&priv->scan_check);
4061         cancel_delayed_work(&priv->alive_start);
4062         cancel_delayed_work(&priv->post_associate);
4063         cancel_work_sync(&priv->beacon_update);
4064         del_timer_sync(&priv->statistics_periodic);
4065 }
4066
4067 static struct attribute *iwl4965_sysfs_entries[] = {
4068         &dev_attr_channels.attr,
4069         &dev_attr_flags.attr,
4070         &dev_attr_filter_flags.attr,
4071 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4072         &dev_attr_measurement.attr,
4073 #endif
4074         &dev_attr_power_level.attr,
4075         &dev_attr_retry_rate.attr,
4076         &dev_attr_rs_window.attr,
4077         &dev_attr_statistics.attr,
4078         &dev_attr_status.attr,
4079         &dev_attr_temperature.attr,
4080         &dev_attr_tx_power.attr,
4081 #ifdef CONFIG_IWLWIFI_DEBUG
4082         &dev_attr_debug_level.attr,
4083 #endif
4084         &dev_attr_version.attr,
4085
4086         NULL
4087 };
4088
4089 static struct attribute_group iwl4965_attribute_group = {
4090         .name = NULL,           /* put in device directory */
4091         .attrs = iwl4965_sysfs_entries,
4092 };
4093
4094 static struct ieee80211_ops iwl4965_hw_ops = {
4095         .tx = iwl4965_mac_tx,
4096         .start = iwl4965_mac_start,
4097         .stop = iwl4965_mac_stop,
4098         .add_interface = iwl4965_mac_add_interface,
4099         .remove_interface = iwl4965_mac_remove_interface,
4100         .config = iwl4965_mac_config,
4101         .config_interface = iwl4965_mac_config_interface,
4102         .configure_filter = iwl4965_configure_filter,
4103         .set_key = iwl4965_mac_set_key,
4104         .update_tkip_key = iwl4965_mac_update_tkip_key,
4105         .get_stats = iwl4965_mac_get_stats,
4106         .get_tx_stats = iwl4965_mac_get_tx_stats,
4107         .conf_tx = iwl4965_mac_conf_tx,
4108         .reset_tsf = iwl4965_mac_reset_tsf,
4109         .bss_info_changed = iwl4965_bss_info_changed,
4110         .ampdu_action = iwl4965_mac_ampdu_action,
4111         .hw_scan = iwl4965_mac_hw_scan
4112 };
4113
4114 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4115 {
4116         int err = 0;
4117         struct iwl_priv *priv;
4118         struct ieee80211_hw *hw;
4119         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4120         unsigned long flags;
4121         DECLARE_MAC_BUF(mac);
4122
4123         /************************
4124          * 1. Allocating HW data
4125          ************************/
4126
4127         /* Disabling hardware scan means that mac80211 will perform scans
4128          * "the hard way", rather than using device's scan. */
4129         if (cfg->mod_params->disable_hw_scan) {
4130                 if (cfg->mod_params->debug & IWL_DL_INFO)
4131                         dev_printk(KERN_DEBUG, &(pdev->dev),
4132                                    "Disabling hw_scan\n");
4133                 iwl4965_hw_ops.hw_scan = NULL;
4134         }
4135
4136         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4137         if (!hw) {
4138                 err = -ENOMEM;
4139                 goto out;
4140         }
4141         priv = hw->priv;
4142         /* At this point both hw and priv are allocated. */
4143
4144         SET_IEEE80211_DEV(hw, &pdev->dev);
4145
4146         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4147         priv->cfg = cfg;
4148         priv->pci_dev = pdev;
4149
4150 #ifdef CONFIG_IWLWIFI_DEBUG
4151         priv->debug_level = priv->cfg->mod_params->debug;
4152         atomic_set(&priv->restrict_refcnt, 0);
4153 #endif
4154
4155         /**************************
4156          * 2. Initializing PCI bus
4157          **************************/
4158         if (pci_enable_device(pdev)) {
4159                 err = -ENODEV;
4160                 goto out_ieee80211_free_hw;
4161         }
4162
4163         pci_set_master(pdev);
4164
4165         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4166         if (!err)
4167                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4168         if (err) {
4169                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4170                 if (!err)
4171                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4172                 /* both attempts failed: */
4173                 if (err) {
4174                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4175                                 DRV_NAME);
4176                         goto out_pci_disable_device;
4177                 }
4178         }
4179
4180         err = pci_request_regions(pdev, DRV_NAME);
4181         if (err)
4182                 goto out_pci_disable_device;
4183
4184         pci_set_drvdata(pdev, priv);
4185
4186         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4187          * PCI Tx retries from interfering with C3 CPU state */
4188         pci_write_config_byte(pdev, 0x41, 0x00);
4189
4190         /***********************
4191          * 3. Read REV register
4192          ***********************/
4193         priv->hw_base = pci_iomap(pdev, 0, 0);
4194         if (!priv->hw_base) {
4195                 err = -ENODEV;
4196                 goto out_pci_release_regions;
4197         }
4198
4199         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4200                 (unsigned long long) pci_resource_len(pdev, 0));
4201         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4202
4203         iwl_hw_detect(priv);
4204         printk(KERN_INFO DRV_NAME
4205                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4206                 priv->cfg->name, priv->hw_rev);
4207
4208         /* amp init */
4209         err = priv->cfg->ops->lib->apm_ops.init(priv);
4210         if (err < 0) {
4211                 IWL_DEBUG_INFO("Failed to init APMG\n");
4212                 goto out_iounmap;
4213         }
4214         /*****************
4215          * 4. Read EEPROM
4216          *****************/
4217         /* Read the EEPROM */
4218         err = iwl_eeprom_init(priv);
4219         if (err) {
4220                 IWL_ERROR("Unable to init EEPROM\n");
4221                 goto out_iounmap;
4222         }
4223         err = iwl_eeprom_check_version(priv);
4224         if (err)
4225                 goto out_iounmap;
4226
4227         /* extract MAC Address */
4228         iwl_eeprom_get_mac(priv, priv->mac_addr);
4229         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4230         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4231
4232         /************************
4233          * 5. Setup HW constants
4234          ************************/
4235         if (iwl_set_hw_params(priv)) {
4236                 IWL_ERROR("failed to set hw parameters\n");
4237                 goto out_free_eeprom;
4238         }
4239
4240         /*******************
4241          * 6. Setup priv
4242          *******************/
4243
4244         err = iwl_init_drv(priv);
4245         if (err)
4246                 goto out_free_eeprom;
4247         /* At this point both hw and priv are initialized. */
4248
4249         /**********************************
4250          * 7. Initialize module parameters
4251          **********************************/
4252
4253         /* Disable radio (SW RF KILL) via parameter when loading driver */
4254         if (priv->cfg->mod_params->disable) {
4255                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4256                 IWL_DEBUG_INFO("Radio disabled.\n");
4257         }
4258
4259         /********************
4260          * 8. Setup services
4261          ********************/
4262         spin_lock_irqsave(&priv->lock, flags);
4263         iwl4965_disable_interrupts(priv);
4264         spin_unlock_irqrestore(&priv->lock, flags);
4265
4266         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4267         if (err) {
4268                 IWL_ERROR("failed to create sysfs device attributes\n");
4269                 goto out_uninit_drv;
4270         }
4271
4272
4273         iwl_setup_deferred_work(priv);
4274         iwl_setup_rx_handlers(priv);
4275
4276         /********************
4277          * 9. Conclude
4278          ********************/
4279         pci_save_state(pdev);
4280         pci_disable_device(pdev);
4281
4282         /**********************************
4283          * 10. Setup and register mac80211
4284          **********************************/
4285
4286         err = iwl_setup_mac(priv);
4287         if (err)
4288                 goto out_remove_sysfs;
4289
4290         err = iwl_dbgfs_register(priv, DRV_NAME);
4291         if (err)
4292                 IWL_ERROR("failed to create debugfs files\n");
4293
4294         err = iwl_rfkill_init(priv);
4295         if (err)
4296                 IWL_ERROR("Unable to initialize RFKILL system. "
4297                                   "Ignoring error: %d\n", err);
4298         iwl_power_initialize(priv);
4299         return 0;
4300
4301  out_remove_sysfs:
4302         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4303  out_uninit_drv:
4304         iwl_uninit_drv(priv);
4305  out_free_eeprom:
4306         iwl_eeprom_free(priv);
4307  out_iounmap:
4308         pci_iounmap(pdev, priv->hw_base);
4309  out_pci_release_regions:
4310         pci_release_regions(pdev);
4311         pci_set_drvdata(pdev, NULL);
4312  out_pci_disable_device:
4313         pci_disable_device(pdev);
4314  out_ieee80211_free_hw:
4315         ieee80211_free_hw(priv->hw);
4316  out:
4317         return err;
4318 }
4319
4320 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4321 {
4322         struct iwl_priv *priv = pci_get_drvdata(pdev);
4323         unsigned long flags;
4324
4325         if (!priv)
4326                 return;
4327
4328         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4329
4330         iwl_dbgfs_unregister(priv);
4331         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4332
4333         if (priv->mac80211_registered) {
4334                 ieee80211_unregister_hw(priv->hw);
4335                 priv->mac80211_registered = 0;
4336         }
4337
4338         set_bit(STATUS_EXIT_PENDING, &priv->status);
4339
4340         iwl4965_down(priv);
4341
4342         /* make sure we flush any pending irq or
4343          * tasklet for the driver
4344          */
4345         spin_lock_irqsave(&priv->lock, flags);
4346         iwl4965_disable_interrupts(priv);
4347         spin_unlock_irqrestore(&priv->lock, flags);
4348
4349         iwl_synchronize_irq(priv);
4350
4351         iwl_rfkill_unregister(priv);
4352         iwl4965_dealloc_ucode_pci(priv);
4353
4354         if (priv->rxq.bd)
4355                 iwl_rx_queue_free(priv, &priv->rxq);
4356         iwl_hw_txq_ctx_free(priv);
4357
4358         iwl_clear_stations_table(priv);
4359         iwl_eeprom_free(priv);
4360
4361
4362         /*netif_stop_queue(dev); */
4363         flush_workqueue(priv->workqueue);
4364
4365         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4366          * priv->workqueue... so we can't take down the workqueue
4367          * until now... */
4368         destroy_workqueue(priv->workqueue);
4369         priv->workqueue = NULL;
4370
4371         pci_iounmap(pdev, priv->hw_base);
4372         pci_release_regions(pdev);
4373         pci_disable_device(pdev);
4374         pci_set_drvdata(pdev, NULL);
4375
4376         iwl_uninit_drv(priv);
4377
4378         if (priv->ibss_beacon)
4379                 dev_kfree_skb(priv->ibss_beacon);
4380
4381         ieee80211_free_hw(priv->hw);
4382 }
4383
4384 #ifdef CONFIG_PM
4385
4386 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4387 {
4388         struct iwl_priv *priv = pci_get_drvdata(pdev);
4389
4390         if (priv->is_open) {
4391                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4392                 iwl4965_mac_stop(priv->hw);
4393                 priv->is_open = 1;
4394         }
4395
4396         pci_set_power_state(pdev, PCI_D3hot);
4397
4398         return 0;
4399 }
4400
4401 static int iwl4965_pci_resume(struct pci_dev *pdev)
4402 {
4403         struct iwl_priv *priv = pci_get_drvdata(pdev);
4404
4405         pci_set_power_state(pdev, PCI_D0);
4406
4407         if (priv->is_open)
4408                 iwl4965_mac_start(priv->hw);
4409
4410         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4411         return 0;
4412 }
4413
4414 #endif /* CONFIG_PM */
4415
4416 /*****************************************************************************
4417  *
4418  * driver and module entry point
4419  *
4420  *****************************************************************************/
4421
4422 /* Hardware specific file defines the PCI IDs table for that hardware module */
4423 static struct pci_device_id iwl_hw_card_ids[] = {
4424         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4425         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4426 #ifdef CONFIG_IWL5000
4427         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4428         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4429         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4430         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4431         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4432         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4433         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4434         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4435         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4436         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4437         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4438 #endif /* CONFIG_IWL5000 */
4439         {0}
4440 };
4441 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4442
4443 static struct pci_driver iwl_driver = {
4444         .name = DRV_NAME,
4445         .id_table = iwl_hw_card_ids,
4446         .probe = iwl4965_pci_probe,
4447         .remove = __devexit_p(iwl4965_pci_remove),
4448 #ifdef CONFIG_PM
4449         .suspend = iwl4965_pci_suspend,
4450         .resume = iwl4965_pci_resume,
4451 #endif
4452 };
4453
4454 static int __init iwl4965_init(void)
4455 {
4456
4457         int ret;
4458         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4459         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4460
4461         ret = iwl4965_rate_control_register();
4462         if (ret) {
4463                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4464                 return ret;
4465         }
4466
4467         ret = pci_register_driver(&iwl_driver);
4468         if (ret) {
4469                 IWL_ERROR("Unable to initialize PCI module\n");
4470                 goto error_register;
4471         }
4472
4473         return ret;
4474
4475 error_register:
4476         iwl4965_rate_control_unregister();
4477         return ret;
4478 }
4479
4480 static void __exit iwl4965_exit(void)
4481 {
4482         pci_unregister_driver(&iwl_driver);
4483         iwl4965_rate_control_unregister();
4484 }
4485
4486 module_exit(iwl4965_exit);
4487 module_init(iwl4965_init);