drivers/net/wireless/iwlwifi/iwl-agn.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/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-helpers.h"
  52 #include "iwl-sta.h"
  53 #include "iwl-calib.h"
  54
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  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  * iwl_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 iwl_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.assoc_id != priv->active_rxon.assoc_id))
 211                 return 1;
 212
 213         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 214          * be updated with the RXON_ASSOC command -- however only some
 215          * flag transitions are allowed using RXON_ASSOC */
 216
 217         /* Check if we are not switching bands */
 218         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 219             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 220                 return 1;
 221
 222         /* Check if we are switching association toggle */
 223         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 224                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 225                 return 1;
 226
 227         return 0;
 228 }
 229
 230 /**
 231  * iwl4965_commit_rxon - commit staging_rxon to hardware
 232  *
 233  * The RXON command in staging_rxon is committed to the hardware and
 234  * the active_rxon structure is updated with the new data.  This
 235  * function correctly transitions out of the RXON_ASSOC_MSK state if
 236  * a HW tune is required based on the RXON structure changes.
 237  */
 238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 239 {
 240         /* cast away the const for active_rxon in this function */
 241         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 242         int ret;
 243         bool new_assoc =
 244                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 245
 246         if (!iwl_is_alive(priv))
 247                 return -EBUSY;
 248
 249         /* always get timestamp with Rx frame */
 250         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 251         /* allow CTS-to-self if possible. this is relevant only for
 252          * 5000, but will not damage 4965 */
 253         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 254
 255         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 256         if (ret) {
 257                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 258                 return -EINVAL;
 259         }
 260
 261         /* If we don't need to send a full RXON, we can use
 262          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 263          * and other flags for the current radio configuration. */
 264         if (!iwl_full_rxon_required(priv)) {
 265                 ret = iwl_send_rxon_assoc(priv);
 266                 if (ret) {
 267                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 268                         return ret;
 269                 }
 270
 271                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 272                 return 0;
 273         }
 274
 275         /* station table will be cleared */
 276         priv->assoc_station_added = 0;
 277
 278         /* If we are currently associated and the new config requires
 279          * an RXON_ASSOC and the new config wants the associated mask enabled,
 280          * we must clear the associated from the active configuration
 281          * before we apply the new config */
 282         if (iwl_is_associated(priv) && new_assoc) {
 283                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 284                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 285
 286                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 287                                       sizeof(struct iwl_rxon_cmd),
 288                                       &priv->active_rxon);
 289
 290                 /* If the mask clearing failed then we set
 291                  * active_rxon back to what it was previously */
 292                 if (ret) {
 293                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 294                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 295                         return ret;
 296                 }
 297         }
 298
 299         IWL_DEBUG_INFO("Sending RXON\n"
 300                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 301                        "* channel = %d\n"
 302                        "* bssid = %pM\n",
 303                        (new_assoc ? "" : "out"),
 304                        le16_to_cpu(priv->staging_rxon.channel),
 305                        priv->staging_rxon.bssid_addr);
 306
 307         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 308
 309         /* Apply the new configuration
 310          * RXON unassoc clears the station table in uCode, send it before
 311          * we add the bcast station. If assoc bit is set, we will send RXON
 312          * after having added the bcast and bssid station.
 313          */
 314         if (!new_assoc) {
 315                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 316                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 317                 if (ret) {
 318                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 319                         return ret;
 320                 }
 321                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 322         }
 323
 324         iwl_clear_stations_table(priv);
 325
 326         if (!priv->error_recovering)
 327                 priv->start_calib = 0;
 328
 329         /* Add the broadcast address so we can send broadcast frames */
 330         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 331                                                 IWL_INVALID_STATION) {
 332                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 333                 return -EIO;
 334         }
 335
 336         /* If we have set the ASSOC_MSK and we are in BSS mode then
 337          * add the IWL_AP_ID to the station rate table */
 338         if (new_assoc) {
 339                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 340                         ret = iwl_rxon_add_station(priv,
 341                                            priv->active_rxon.bssid_addr, 1);
 342                         if (ret == IWL_INVALID_STATION) {
 343                                 IWL_ERROR("Error adding AP address for TX.\n");
 344                                 return -EIO;
 345                         }
 346                         priv->assoc_station_added = 1;
 347                         if (priv->default_wep_key &&
 348                             iwl_send_static_wepkey_cmd(priv, 0))
 349                                 IWL_ERROR("Could not send WEP static key.\n");
 350                 }
 351
 352                 /* Apply the new configuration
 353                  * RXON assoc doesn't clear the station table in uCode,
 354                  */
 355                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 356                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 357                 if (ret) {
 358                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 359                         return ret;
 360                 }
 361                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 362         }
 363
 364         iwl_init_sensitivity(priv);
 365
 366         /* If we issue a new RXON command which required a tune then we must
 367          * send a new TXPOWER command or we won't be able to Tx any frames */
 368         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 369         if (ret) {
 370                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 371                 return ret;
 372         }
 373
 374         return 0;
 375 }
 376
 377 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 378 {
 379
 380         iwl_set_rxon_chain(priv);
 381         iwl4965_commit_rxon(priv);
 382 }
 383
 384 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 385 {
 386         struct iwl4965_bt_cmd bt_cmd = {
 387                 .flags = 3,
 388                 .lead_time = 0xAA,
 389                 .max_kill = 1,
 390                 .kill_ack_mask = 0,
 391                 .kill_cts_mask = 0,
 392         };
 393
 394         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 395                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 396 }
 397
 398 static void iwl_clear_free_frames(struct iwl_priv *priv)
 399 {
 400         struct list_head *element;
 401
 402         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 403                        priv->frames_count);
 404
 405         while (!list_empty(&priv->free_frames)) {
 406                 element = priv->free_frames.next;
 407                 list_del(element);
 408                 kfree(list_entry(element, struct iwl_frame, list));
 409                 priv->frames_count--;
 410         }
 411
 412         if (priv->frames_count) {
 413                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 414                             priv->frames_count);
 415                 priv->frames_count = 0;
 416         }
 417 }
 418
 419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 420 {
 421         struct iwl_frame *frame;
 422         struct list_head *element;
 423         if (list_empty(&priv->free_frames)) {
 424                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 425                 if (!frame) {
 426                         IWL_ERROR("Could not allocate frame!\n");
 427                         return NULL;
 428                 }
 429
 430                 priv->frames_count++;
 431                 return frame;
 432         }
 433
 434         element = priv->free_frames.next;
 435         list_del(element);
 436         return list_entry(element, struct iwl_frame, list);
 437 }
 438
 439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 440 {
 441         memset(frame, 0, sizeof(*frame));
 442         list_add(&frame->list, &priv->free_frames);
 443 }
 444
 445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 446                                           struct ieee80211_hdr *hdr,
 447                                           const u8 *dest, int left)
 448 {
 449         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 450             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 451              (priv->iw_mode != NL80211_IFTYPE_AP)))
 452                 return 0;
 453
 454         if (priv->ibss_beacon->len > left)
 455                 return 0;
 456
 457         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 458
 459         return priv->ibss_beacon->len;
 460 }
 461
 462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 463 {
 464         int i;
 465         int rate_mask;
 466
 467         /* Set rate mask*/
 468         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 469                 rate_mask = priv->active_rate_basic & 0xF;
 470         else
 471                 rate_mask = priv->active_rate_basic & 0xFF0;
 472
 473         /* Find lowest valid rate */
 474         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 475                                         i = iwl_rates[i].next_ieee) {
 476                 if (rate_mask & (1 << i))
 477                         return iwl_rates[i].plcp;
 478         }
 479
 480         /* No valid rate was found. Assign the lowest one */
 481         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 482                 return IWL_RATE_1M_PLCP;
 483         else
 484                 return IWL_RATE_6M_PLCP;
 485 }
 486
 487 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
 488                                        struct iwl_frame *frame, u8 rate)
 489 {
 490         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 491         unsigned int frame_size;
 492
 493         tx_beacon_cmd = &frame->u.beacon;
 494         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 495
 496         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 497         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 498
 499         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 500                                 iwl_bcast_addr,
 501                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 502
 503         BUG_ON(frame_size > MAX_MPDU_SIZE);
 504         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 505
 506         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 507                 tx_beacon_cmd->tx.rate_n_flags =
 508                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 509         else
 510                 tx_beacon_cmd->tx.rate_n_flags =
 511                         iwl_hw_set_rate_n_flags(rate, 0);
 512
 513         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 514                                      TX_CMD_FLG_TSF_MSK |
 515                                      TX_CMD_FLG_STA_RATE_MSK;
 516
 517         return sizeof(*tx_beacon_cmd) + frame_size;
 518 }
 519 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 520 {
 521         struct iwl_frame *frame;
 522         unsigned int frame_size;
 523         int rc;
 524         u8 rate;
 525
 526         frame = iwl_get_free_frame(priv);
 527
 528         if (!frame) {
 529                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 530                           "command.\n");
 531                 return -ENOMEM;
 532         }
 533
 534         rate = iwl4965_rate_get_lowest_plcp(priv);
 535
 536         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 537
 538         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 539                               &frame->u.cmd[0]);
 540
 541         iwl_free_frame(priv, frame);
 542
 543         return rc;
 544 }
 545
 546 /******************************************************************************
 547  *
 548  * Misc. internal state and helper functions
 549  *
 550  ******************************************************************************/
 551
 552 static void iwl4965_ht_conf(struct iwl_priv *priv,
 553                             struct ieee80211_bss_conf *bss_conf)
 554 {
 555         struct ieee80211_sta_ht_cap *ht_conf = bss_conf->ht_cap;
 556         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 557         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 558
 559         IWL_DEBUG_MAC80211("enter: \n");
 560
 561         iwl_conf->is_ht = bss_conf->assoc_ht;
 562
 563         if (!iwl_conf->is_ht)
 564                 return;
 565
 566         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 567                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 568         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 569                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 570
 571         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 572         iwl_conf->max_amsdu_size =
 573                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 574
 575         iwl_conf->supported_chan_width =
 576                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 577         iwl_conf->extension_chan_offset =
 578                 ht_bss_conf->bss_cap & IEEE80211_HT_PARAM_CHA_SEC_OFFSET;
 579         /* If no above or below channel supplied disable FAT channel */
 580         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 581             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
 582                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 583                 iwl_conf->supported_chan_width = 0;
 584         }
 585
 586         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 587
 588         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 589
 590         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 591         iwl_conf->tx_chan_width =
 592                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY);
 593         iwl_conf->ht_protection =
 594                 ht_bss_conf->bss_op_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 595         iwl_conf->non_GF_STA_present =
 596                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 597
 598         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 599         IWL_DEBUG_MAC80211("leave\n");
 600 }
 601
 602 /*
 603  * QoS  support
 604 */
 605 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 606 {
 607         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 608                 return;
 609
 610         if (!priv->qos_data.qos_enable)
 611                 return;
 612
 613         priv->qos_data.def_qos_parm.qos_flags = 0;
 614
 615         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 616             !priv->qos_data.qos_cap.q_AP.txop_request)
 617                 priv->qos_data.def_qos_parm.qos_flags |=
 618                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 619         if (priv->qos_data.qos_active)
 620                 priv->qos_data.def_qos_parm.qos_flags |=
 621                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 622
 623         if (priv->current_ht_config.is_ht)
 624                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 625
 626         if (force || iwl_is_associated(priv)) {
 627                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 628                                 priv->qos_data.qos_active,
 629                                 priv->qos_data.def_qos_parm.qos_flags);
 630
 631                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 632                                        sizeof(struct iwl_qosparam_cmd),
 633                                        &priv->qos_data.def_qos_parm, NULL);
 634         }
 635 }
 636
 637 #define MAX_UCODE_BEACON_INTERVAL       4096
 638
 639 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 640 {
 641         u16 new_val = 0;
 642         u16 beacon_factor = 0;
 643
 644         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 645                                         / MAX_UCODE_BEACON_INTERVAL;
 646         new_val = beacon_val / beacon_factor;
 647
 648         return new_val;
 649 }
 650
 651 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 652 {
 653         u64 tsf;
 654         s32 interval_tm, rem;
 655         unsigned long flags;
 656         struct ieee80211_conf *conf = NULL;
 657         u16 beacon_int = 0;
 658
 659         conf = ieee80211_get_hw_conf(priv->hw);
 660
 661         spin_lock_irqsave(&priv->lock, flags);
 662         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 663         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 664
 665         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 666                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 667                 priv->rxon_timing.atim_window = 0;
 668         } else {
 669                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 670
 671                 /* TODO: we need to get atim_window from upper stack
 672                  * for now we set to 0 */
 673                 priv->rxon_timing.atim_window = 0;
 674         }
 675
 676         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 677
 678         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 679         interval_tm = beacon_int * 1024;
 680         rem = do_div(tsf, interval_tm);
 681         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 682
 683         spin_unlock_irqrestore(&priv->lock, flags);
 684         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 685                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 686                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 687                         le16_to_cpu(priv->rxon_timing.atim_window));
 688 }
 689
 690 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 691                                    enum ieee80211_band band)
 692 {
 693         if (band == IEEE80211_BAND_5GHZ) {
 694                 priv->staging_rxon.flags &=
 695                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 696                       | RXON_FLG_CCK_MSK);
 697                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 698         } else {
 699                 /* Copied from iwl4965_post_associate() */
 700                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 701                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 702                 else
 703                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 704
 705                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 706                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 707
 708                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 709                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 710                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 711         }
 712 }
 713
 714 /*
 715  * initialize rxon structure with default values from eeprom
 716  */
 717 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 718 {
 719         const struct iwl_channel_info *ch_info;
 720
 721         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 722
 723         switch (priv->iw_mode) {
 724         case NL80211_IFTYPE_AP:
 725                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 726                 break;
 727
 728         case NL80211_IFTYPE_STATION:
 729                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 730                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 731                 break;
 732
 733         case NL80211_IFTYPE_ADHOC:
 734                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 735                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 736                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 737                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 738                 break;
 739
 740         case NL80211_IFTYPE_MONITOR:
 741                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 742                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 743                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 744                 break;
 745         default:
 746                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 747                 break;
 748         }
 749
 750 #if 0
 751         /* TODO:  Figure out when short_preamble would be set and cache from
 752          * that */
 753         if (!hw_to_local(priv->hw)->short_preamble)
 754                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 755         else
 756                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 757 #endif
 758
 759         ch_info = iwl_get_channel_info(priv, priv->band,
 760                                        le16_to_cpu(priv->active_rxon.channel));
 761
 762         if (!ch_info)
 763                 ch_info = &priv->channel_info[0];
 764
 765         /*
 766          * in some case A channels are all non IBSS
 767          * in this case force B/G channel
 768          */
 769         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 770             !(is_channel_ibss(ch_info)))
 771                 ch_info = &priv->channel_info[0];
 772
 773         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 774         priv->band = ch_info->band;
 775
 776         iwl_set_flags_for_band(priv, priv->band);
 777
 778         priv->staging_rxon.ofdm_basic_rates =
 779             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 780         priv->staging_rxon.cck_basic_rates =
 781             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 782
 783         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 784                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 785         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 786         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 787         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 788         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 789         iwl_set_rxon_chain(priv);
 790 }
 791
 792 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 793 {
 794         priv->iw_mode = mode;
 795
 796         iwl4965_connection_init_rx_config(priv);
 797         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 798
 799         iwl_clear_stations_table(priv);
 800
 801         /* dont commit rxon if rf-kill is on*/
 802         if (!iwl_is_ready_rf(priv))
 803                 return -EAGAIN;
 804
 805         cancel_delayed_work(&priv->scan_check);
 806         if (iwl_scan_cancel_timeout(priv, 100)) {
 807                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 808                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 809                 return -EAGAIN;
 810         }
 811
 812         iwl4965_commit_rxon(priv);
 813
 814         return 0;
 815 }
 816
 817 static void iwl4965_set_rate(struct iwl_priv *priv)
 818 {
 819         const struct ieee80211_supported_band *hw = NULL;
 820         struct ieee80211_rate *rate;
 821         int i;
 822
 823         hw = iwl_get_hw_mode(priv, priv->band);
 824         if (!hw) {
 825                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 826                 return;
 827         }
 828
 829         priv->active_rate = 0;
 830         priv->active_rate_basic = 0;
 831
 832         for (i = 0; i < hw->n_bitrates; i++) {
 833                 rate = &(hw->bitrates[i]);
 834                 if (rate->hw_value < IWL_RATE_COUNT)
 835                         priv->active_rate |= (1 << rate->hw_value);
 836         }
 837
 838         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 839                        priv->active_rate, priv->active_rate_basic);
 840
 841         /*
 842          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 843          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 844          * OFDM
 845          */
 846         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 847                 priv->staging_rxon.cck_basic_rates =
 848                     ((priv->active_rate_basic &
 849                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 850         else
 851                 priv->staging_rxon.cck_basic_rates =
 852                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 853
 854         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 855                 priv->staging_rxon.ofdm_basic_rates =
 856                     ((priv->active_rate_basic &
 857                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 858                       IWL_FIRST_OFDM_RATE) & 0xFF;
 859         else
 860                 priv->staging_rxon.ofdm_basic_rates =
 861                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 862 }
 863
 864 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 865
 866 #include "iwl-spectrum.h"
 867
 868 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 869 #define BEACON_TIME_MASK_HIGH   0xFF000000
 870 #define TIME_UNIT               1024
 871
 872 /*
 873  * extended beacon time format
 874  * time in usec will be changed into a 32-bit value in 8:24 format
 875  * the high 1 byte is the beacon counts
 876  * the lower 3 bytes is the time in usec within one beacon interval
 877  */
 878
 879 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 880 {
 881         u32 quot;
 882         u32 rem;
 883         u32 interval = beacon_interval * 1024;
 884
 885         if (!interval || !usec)
 886                 return 0;
 887
 888         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 889         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 890
 891         return (quot << 24) + rem;
 892 }
 893
 894 /* base is usually what we get from ucode with each received frame,
 895  * the same as HW timer counter counting down
 896  */
 897
 898 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 899 {
 900         u32 base_low = base & BEACON_TIME_MASK_LOW;
 901         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 902         u32 interval = beacon_interval * TIME_UNIT;
 903         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 904             (addon & BEACON_TIME_MASK_HIGH);
 905
 906         if (base_low > addon_low)
 907                 res += base_low - addon_low;
 908         else if (base_low < addon_low) {
 909                 res += interval + base_low - addon_low;
 910                 res += (1 << 24);
 911         } else
 912                 res += (1 << 24);
 913
 914         return cpu_to_le32(res);
 915 }
 916
 917 static int iwl4965_get_measurement(struct iwl_priv *priv,
 918                                struct ieee80211_measurement_params *params,
 919                                u8 type)
 920 {
 921         struct iwl4965_spectrum_cmd spectrum;
 922         struct iwl_rx_packet *res;
 923         struct iwl_host_cmd cmd = {
 924                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 925                 .data = (void *)&spectrum,
 926                 .meta.flags = CMD_WANT_SKB,
 927         };
 928         u32 add_time = le64_to_cpu(params->start_time);
 929         int rc;
 930         int spectrum_resp_status;
 931         int duration = le16_to_cpu(params->duration);
 932
 933         if (iwl_is_associated(priv))
 934                 add_time =
 935                     iwl4965_usecs_to_beacons(
 936                         le64_to_cpu(params->start_time) - priv->last_tsf,
 937                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 938
 939         memset(&spectrum, 0, sizeof(spectrum));
 940
 941         spectrum.channel_count = cpu_to_le16(1);
 942         spectrum.flags =
 943             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 944         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 945         cmd.len = sizeof(spectrum);
 946         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 947
 948         if (iwl_is_associated(priv))
 949                 spectrum.start_time =
 950                     iwl4965_add_beacon_time(priv->last_beacon_time,
 951                                 add_time,
 952                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 953         else
 954                 spectrum.start_time = 0;
 955
 956         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 957         spectrum.channels[0].channel = params->channel;
 958         spectrum.channels[0].type = type;
 959         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 960                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 961                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 962
 963         rc = iwl_send_cmd_sync(priv, &cmd);
 964         if (rc)
 965                 return rc;
 966
 967         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 968         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 969                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 970                 rc = -EIO;
 971         }
 972
 973         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 974         switch (spectrum_resp_status) {
 975         case 0:         /* Command will be handled */
 976                 if (res->u.spectrum.id != 0xff) {
 977                         IWL_DEBUG_INFO
 978                             ("Replaced existing measurement: %d\n",
 979                              res->u.spectrum.id);
 980                         priv->measurement_status &= ~MEASUREMENT_READY;
 981                 }
 982                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 983                 rc = 0;
 984                 break;
 985
 986         case 1:         /* Command will not be handled */
 987                 rc = -EAGAIN;
 988                 break;
 989         }
 990
 991         dev_kfree_skb_any(cmd.meta.u.skb);
 992
 993         return rc;
 994 }
 995 #endif
 996
 997 /******************************************************************************
 998  *
 999  * Generic RX handler implementations
1000  *
1001  ******************************************************************************/
1002 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1003                                 struct iwl_rx_mem_buffer *rxb)
1004 {
1005         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1006         struct iwl_alive_resp *palive;
1007         struct delayed_work *pwork;
1008
1009         palive = &pkt->u.alive_frame;
1010
1011         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1012                        "0x%01X 0x%01X\n",
1013                        palive->is_valid, palive->ver_type,
1014                        palive->ver_subtype);
1015
1016         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1017                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1018                 memcpy(&priv->card_alive_init,
1019                        &pkt->u.alive_frame,
1020                        sizeof(struct iwl_init_alive_resp));
1021                 pwork = &priv->init_alive_start;
1022         } else {
1023                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1024                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1025                        sizeof(struct iwl_alive_resp));
1026                 pwork = &priv->alive_start;
1027         }
1028
1029         /* We delay the ALIVE response by 5ms to
1030          * give the HW RF Kill time to activate... */
1031         if (palive->is_valid == UCODE_VALID_OK)
1032                 queue_delayed_work(priv->workqueue, pwork,
1033                                    msecs_to_jiffies(5));
1034         else
1035                 IWL_WARNING("uCode did not respond OK.\n");
1036 }
1037
1038 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1039                                    struct iwl_rx_mem_buffer *rxb)
1040 {
1041         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1042
1043         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1044                 "seq 0x%04X ser 0x%08X\n",
1045                 le32_to_cpu(pkt->u.err_resp.error_type),
1046                 get_cmd_string(pkt->u.err_resp.cmd_id),
1047                 pkt->u.err_resp.cmd_id,
1048                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1049                 le32_to_cpu(pkt->u.err_resp.error_info));
1050 }
1051
1052 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1053
1054 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1055 {
1056         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1057         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1058         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1059         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1060                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1061         rxon->channel = csa->channel;
1062         priv->staging_rxon.channel = csa->channel;
1063 }
1064
1065 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1066                                           struct iwl_rx_mem_buffer *rxb)
1067 {
1068 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1069         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1070         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1071
1072         if (!report->state) {
1073                 IWL_DEBUG(IWL_DL_11H,
1074                         "Spectrum Measure Notification: Start\n");
1075                 return;
1076         }
1077
1078         memcpy(&priv->measure_report, report, sizeof(*report));
1079         priv->measurement_status |= MEASUREMENT_READY;
1080 #endif
1081 }
1082
1083 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1084                                       struct iwl_rx_mem_buffer *rxb)
1085 {
1086 #ifdef CONFIG_IWLWIFI_DEBUG
1087         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1088         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1089         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1090                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1091 #endif
1092 }
1093
1094 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1095                                              struct iwl_rx_mem_buffer *rxb)
1096 {
1097         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1098         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1099                         "notification for %s:\n",
1100                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1101         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1102 }
1103
1104 static void iwl4965_bg_beacon_update(struct work_struct *work)
1105 {
1106         struct iwl_priv *priv =
1107                 container_of(work, struct iwl_priv, beacon_update);
1108         struct sk_buff *beacon;
1109
1110         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1111         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1112
1113         if (!beacon) {
1114                 IWL_ERROR("update beacon failed\n");
1115                 return;
1116         }
1117
1118         mutex_lock(&priv->mutex);
1119         /* new beacon skb is allocated every time; dispose previous.*/
1120         if (priv->ibss_beacon)
1121                 dev_kfree_skb(priv->ibss_beacon);
1122
1123         priv->ibss_beacon = beacon;
1124         mutex_unlock(&priv->mutex);
1125
1126         iwl4965_send_beacon_cmd(priv);
1127 }
1128
1129 /**
1130  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1131  *
1132  * This callback is provided in order to send a statistics request.
1133  *
1134  * This timer function is continually reset to execute within
1135  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1136  * was received.  We need to ensure we receive the statistics in order
1137  * to update the temperature used for calibrating the TXPOWER.
1138  */
1139 static void iwl4965_bg_statistics_periodic(unsigned long data)
1140 {
1141         struct iwl_priv *priv = (struct iwl_priv *)data;
1142
1143         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1144                 return;
1145
1146         iwl_send_statistics_request(priv, CMD_ASYNC);
1147 }
1148
1149 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1150                                 struct iwl_rx_mem_buffer *rxb)
1151 {
1152 #ifdef CONFIG_IWLWIFI_DEBUG
1153         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1154         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1155         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1156
1157         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1158                 "tsf %d %d rate %d\n",
1159                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1160                 beacon->beacon_notify_hdr.failure_frame,
1161                 le32_to_cpu(beacon->ibss_mgr_status),
1162                 le32_to_cpu(beacon->high_tsf),
1163                 le32_to_cpu(beacon->low_tsf), rate);
1164 #endif
1165
1166         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1167             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1168                 queue_work(priv->workqueue, &priv->beacon_update);
1169 }
1170
1171 /* Handle notification from uCode that card's power state is changing
1172  * due to software, hardware, or critical temperature RFKILL */
1173 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1174                                     struct iwl_rx_mem_buffer *rxb)
1175 {
1176         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1177         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1178         unsigned long status = priv->status;
1179
1180         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1181                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1182                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1183
1184         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1185                      RF_CARD_DISABLED)) {
1186
1187                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1188                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1189
1190                 if (!iwl_grab_nic_access(priv)) {
1191                         iwl_write_direct32(
1192                                 priv, HBUS_TARG_MBX_C,
1193                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1194
1195                         iwl_release_nic_access(priv);
1196                 }
1197
1198                 if (!(flags & RXON_CARD_DISABLED)) {
1199                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1200                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1201                         if (!iwl_grab_nic_access(priv)) {
1202                                 iwl_write_direct32(
1203                                         priv, HBUS_TARG_MBX_C,
1204                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1205
1206                                 iwl_release_nic_access(priv);
1207                         }
1208                 }
1209
1210                 if (flags & RF_CARD_DISABLED) {
1211                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1212                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1213                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1214                         if (!iwl_grab_nic_access(priv))
1215                                 iwl_release_nic_access(priv);
1216                 }
1217         }
1218
1219         if (flags & HW_CARD_DISABLED)
1220                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1221         else
1222                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1223
1224
1225         if (flags & SW_CARD_DISABLED)
1226                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1227         else
1228                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1229
1230         if (!(flags & RXON_CARD_DISABLED))
1231                 iwl_scan_cancel(priv);
1232
1233         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1234              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1235             (test_bit(STATUS_RF_KILL_SW, &status) !=
1236              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1237                 queue_work(priv->workqueue, &priv->rf_kill);
1238         else
1239                 wake_up_interruptible(&priv->wait_command_queue);
1240 }
1241
1242 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1243 {
1244         int ret;
1245         unsigned long flags;
1246
1247         spin_lock_irqsave(&priv->lock, flags);
1248         ret = iwl_grab_nic_access(priv);
1249         if (ret)
1250                 goto err;
1251
1252         if (src == IWL_PWR_SRC_VAUX) {
1253                 u32 val;
1254                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1255                                             &val);
1256
1257                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1258                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1259                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1260                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1261         } else {
1262                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1263                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1264                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1265         }
1266
1267         iwl_release_nic_access(priv);
1268 err:
1269         spin_unlock_irqrestore(&priv->lock, flags);
1270         return ret;
1271 }
1272
1273 /**
1274  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1275  *
1276  * Setup the RX handlers for each of the reply types sent from the uCode
1277  * to the host.
1278  *
1279  * This function chains into the hardware specific files for them to setup
1280  * any hardware specific handlers as well.
1281  */
1282 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1283 {
1284         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1285         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1286         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1287         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1288             iwl4965_rx_spectrum_measure_notif;
1289         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1290         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1291             iwl4965_rx_pm_debug_statistics_notif;
1292         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1293
1294         /*
1295          * The same handler is used for both the REPLY to a discrete
1296          * statistics request from the host as well as for the periodic
1297          * statistics notifications (after received beacons) from the uCode.
1298          */
1299         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1300         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1301
1302         iwl_setup_rx_scan_handlers(priv);
1303
1304         /* status change handler */
1305         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1306
1307         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1308             iwl_rx_missed_beacon_notif;
1309         /* Rx handlers */
1310         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1311         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1312         /* block ack */
1313         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1314         /* Set up hardware specific Rx handlers */
1315         priv->cfg->ops->lib->rx_handler_setup(priv);
1316 }
1317
1318 /*
1319  * this should be called while priv->lock is locked
1320 */
1321 static void __iwl_rx_replenish(struct iwl_priv *priv)
1322 {
1323         iwl_rx_allocate(priv);
1324         iwl_rx_queue_restock(priv);
1325 }
1326
1327
1328 /**
1329  * iwl_rx_handle - Main entry function for receiving responses from uCode
1330  *
1331  * Uses the priv->rx_handlers callback function array to invoke
1332  * the appropriate handlers, including command responses,
1333  * frame-received notifications, and other notifications.
1334  */
1335 void iwl_rx_handle(struct iwl_priv *priv)
1336 {
1337         struct iwl_rx_mem_buffer *rxb;
1338         struct iwl_rx_packet *pkt;
1339         struct iwl_rx_queue *rxq = &priv->rxq;
1340         u32 r, i;
1341         int reclaim;
1342         unsigned long flags;
1343         u8 fill_rx = 0;
1344         u32 count = 8;
1345
1346         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1347          * buffer that the driver may process (last buffer filled by ucode). */
1348         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1349         i = rxq->read;
1350
1351         /* Rx interrupt, but nothing sent from uCode */
1352         if (i == r)
1353                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1354
1355         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1356                 fill_rx = 1;
1357
1358         while (i != r) {
1359                 rxb = rxq->queue[i];
1360
1361                 /* If an RXB doesn't have a Rx queue slot associated with it,
1362                  * then a bug has been introduced in the queue refilling
1363                  * routines -- catch it here */
1364                 BUG_ON(rxb == NULL);
1365
1366                 rxq->queue[i] = NULL;
1367
1368                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1369                                             priv->hw_params.rx_buf_size,
1370                                             PCI_DMA_FROMDEVICE);
1371                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1372
1373                 /* Reclaim a command buffer only if this packet is a response
1374                  *   to a (driver-originated) command.
1375                  * If the packet (e.g. Rx frame) originated from uCode,
1376                  *   there is no command buffer to reclaim.
1377                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1378                  *   but apparently a few don't get set; catch them here. */
1379                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1380                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1381                         (pkt->hdr.cmd != REPLY_RX) &&
1382                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1383                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1384                         (pkt->hdr.cmd != REPLY_TX);
1385
1386                 /* Based on type of command response or notification,
1387                  *   handle those that need handling via function in
1388                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1389                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1390                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1391                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1392                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1393                 } else {
1394                         /* No handling needed */
1395                         IWL_DEBUG(IWL_DL_RX,
1396                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1397                                 r, i, get_cmd_string(pkt->hdr.cmd),
1398                                 pkt->hdr.cmd);
1399                 }
1400
1401                 if (reclaim) {
1402                         /* Invoke any callbacks, transfer the skb to caller, and
1403                          * fire off the (possibly) blocking iwl_send_cmd()
1404                          * as we reclaim the driver command queue */
1405                         if (rxb && rxb->skb)
1406                                 iwl_tx_cmd_complete(priv, rxb);
1407                         else
1408                                 IWL_WARNING("Claim null rxb?\n");
1409                 }
1410
1411                 /* For now we just don't re-use anything.  We can tweak this
1412                  * later to try and re-use notification packets and SKBs that
1413                  * fail to Rx correctly */
1414                 if (rxb->skb != NULL) {
1415                         priv->alloc_rxb_skb--;
1416                         dev_kfree_skb_any(rxb->skb);
1417                         rxb->skb = NULL;
1418                 }
1419
1420                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1421                                  priv->hw_params.rx_buf_size,
1422                                  PCI_DMA_FROMDEVICE);
1423                 spin_lock_irqsave(&rxq->lock, flags);
1424                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1425                 spin_unlock_irqrestore(&rxq->lock, flags);
1426                 i = (i + 1) & RX_QUEUE_MASK;
1427                 /* If there are a lot of unused frames,
1428                  * restock the Rx queue so ucode wont assert. */
1429                 if (fill_rx) {
1430                         count++;
1431                         if (count >= 8) {
1432                                 priv->rxq.read = i;
1433                                 __iwl_rx_replenish(priv);
1434                                 count = 0;
1435                         }
1436                 }
1437         }
1438
1439         /* Backtrack one entry */
1440         priv->rxq.read = i;
1441         iwl_rx_queue_restock(priv);
1442 }
1443
1444 #ifdef CONFIG_IWLWIFI_DEBUG
1445 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1446 {
1447         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1448
1449         IWL_DEBUG_RADIO("RX CONFIG:\n");
1450         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1451         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1452         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1453         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1454                         le32_to_cpu(rxon->filter_flags));
1455         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1456         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1457                         rxon->ofdm_basic_rates);
1458         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1459         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1460         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1461         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1462 }
1463 #endif
1464
1465 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1466 {
1467         IWL_DEBUG_ISR("Enabling interrupts\n");
1468         set_bit(STATUS_INT_ENABLED, &priv->status);
1469         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1470 }
1471
1472 /* call this function to flush any scheduled tasklet */
1473 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1474 {
1475         /* wait to make sure we flush pedding tasklet*/
1476         synchronize_irq(priv->pci_dev->irq);
1477         tasklet_kill(&priv->irq_tasklet);
1478 }
1479
1480 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1481 {
1482         clear_bit(STATUS_INT_ENABLED, &priv->status);
1483
1484         /* disable interrupts from uCode/NIC to host */
1485         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1486
1487         /* acknowledge/clear/reset any interrupts still pending
1488          * from uCode or flow handler (Rx/Tx DMA) */
1489         iwl_write32(priv, CSR_INT, 0xffffffff);
1490         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1491         IWL_DEBUG_ISR("Disabled interrupts\n");
1492 }
1493
1494
1495 /**
1496  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1497  */
1498 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1499 {
1500         /* Set the FW error flag -- cleared on iwl4965_down */
1501         set_bit(STATUS_FW_ERROR, &priv->status);
1502
1503         /* Cancel currently queued command. */
1504         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1505
1506 #ifdef CONFIG_IWLWIFI_DEBUG
1507         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1508                 iwl_dump_nic_error_log(priv);
1509                 iwl_dump_nic_event_log(priv);
1510                 iwl4965_print_rx_config_cmd(priv);
1511         }
1512 #endif
1513
1514         wake_up_interruptible(&priv->wait_command_queue);
1515
1516         /* Keep the restart process from trying to send host
1517          * commands by clearing the INIT status bit */
1518         clear_bit(STATUS_READY, &priv->status);
1519
1520         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1521                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1522                           "Restarting adapter due to uCode error.\n");
1523
1524                 if (iwl_is_associated(priv)) {
1525                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1526                                sizeof(priv->recovery_rxon));
1527                         priv->error_recovering = 1;
1528                 }
1529                 if (priv->cfg->mod_params->restart_fw)
1530                         queue_work(priv->workqueue, &priv->restart);
1531         }
1532 }
1533
1534 static void iwl4965_error_recovery(struct iwl_priv *priv)
1535 {
1536         unsigned long flags;
1537
1538         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1539                sizeof(priv->staging_rxon));
1540         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1541         iwl4965_commit_rxon(priv);
1542
1543         iwl_rxon_add_station(priv, priv->bssid, 1);
1544
1545         spin_lock_irqsave(&priv->lock, flags);
1546         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1547         priv->error_recovering = 0;
1548         spin_unlock_irqrestore(&priv->lock, flags);
1549 }
1550
1551 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1552 {
1553         u32 inta, handled = 0;
1554         u32 inta_fh;
1555         unsigned long flags;
1556 #ifdef CONFIG_IWLWIFI_DEBUG
1557         u32 inta_mask;
1558 #endif
1559
1560         spin_lock_irqsave(&priv->lock, flags);
1561
1562         /* Ack/clear/reset pending uCode interrupts.
1563          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1564          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1565         inta = iwl_read32(priv, CSR_INT);
1566         iwl_write32(priv, CSR_INT, inta);
1567
1568         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1569          * Any new interrupts that happen after this, either while we're
1570          * in this tasklet, or later, will show up in next ISR/tasklet. */
1571         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1572         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1573
1574 #ifdef CONFIG_IWLWIFI_DEBUG
1575         if (priv->debug_level & IWL_DL_ISR) {
1576                 /* just for debug */
1577                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1578                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1579                               inta, inta_mask, inta_fh);
1580         }
1581 #endif
1582
1583         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1584          * atomic, make sure that inta covers all the interrupts that
1585          * we've discovered, even if FH interrupt came in just after
1586          * reading CSR_INT. */
1587         if (inta_fh & CSR49_FH_INT_RX_MASK)
1588                 inta |= CSR_INT_BIT_FH_RX;
1589         if (inta_fh & CSR49_FH_INT_TX_MASK)
1590                 inta |= CSR_INT_BIT_FH_TX;
1591
1592         /* Now service all interrupt bits discovered above. */
1593         if (inta & CSR_INT_BIT_HW_ERR) {
1594                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1595
1596                 /* Tell the device to stop sending interrupts */
1597                 iwl4965_disable_interrupts(priv);
1598
1599                 iwl4965_irq_handle_error(priv);
1600
1601                 handled |= CSR_INT_BIT_HW_ERR;
1602
1603                 spin_unlock_irqrestore(&priv->lock, flags);
1604
1605                 return;
1606         }
1607
1608 #ifdef CONFIG_IWLWIFI_DEBUG
1609         if (priv->debug_level & (IWL_DL_ISR)) {
1610                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1611                 if (inta & CSR_INT_BIT_SCD)
1612                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1613                                       "the frame/frames.\n");
1614
1615                 /* Alive notification via Rx interrupt will do the real work */
1616                 if (inta & CSR_INT_BIT_ALIVE)
1617                         IWL_DEBUG_ISR("Alive interrupt\n");
1618         }
1619 #endif
1620         /* Safely ignore these bits for debug checks below */
1621         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1622
1623         /* HW RF KILL switch toggled */
1624         if (inta & CSR_INT_BIT_RF_KILL) {
1625                 int hw_rf_kill = 0;
1626                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1627                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1628                         hw_rf_kill = 1;
1629
1630                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1631                                 hw_rf_kill ? "disable radio":"enable radio");
1632
1633                 /* driver only loads ucode once setting the interface up.
1634                  * the driver as well won't allow loading if RFKILL is set
1635                  * therefore no need to restart the driver from this handler
1636                  */
1637                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1638                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1639
1640                 handled |= CSR_INT_BIT_RF_KILL;
1641         }
1642
1643         /* Chip got too hot and stopped itself */
1644         if (inta & CSR_INT_BIT_CT_KILL) {
1645                 IWL_ERROR("Microcode CT kill error detected.\n");
1646                 handled |= CSR_INT_BIT_CT_KILL;
1647         }
1648
1649         /* Error detected by uCode */
1650         if (inta & CSR_INT_BIT_SW_ERR) {
1651                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1652                           inta);
1653                 iwl4965_irq_handle_error(priv);
1654                 handled |= CSR_INT_BIT_SW_ERR;
1655         }
1656
1657         /* uCode wakes up after power-down sleep */
1658         if (inta & CSR_INT_BIT_WAKEUP) {
1659                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1660                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1661                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1662                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1663                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1664                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1665                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1666                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1667
1668                 handled |= CSR_INT_BIT_WAKEUP;
1669         }
1670
1671         /* All uCode command responses, including Tx command responses,
1672          * Rx "responses" (frame-received notification), and other
1673          * notifications from uCode come through here*/
1674         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1675                 iwl_rx_handle(priv);
1676                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1677         }
1678
1679         if (inta & CSR_INT_BIT_FH_TX) {
1680                 IWL_DEBUG_ISR("Tx interrupt\n");
1681                 handled |= CSR_INT_BIT_FH_TX;
1682                 /* FH finished to write, send event */
1683                 priv->ucode_write_complete = 1;
1684                 wake_up_interruptible(&priv->wait_command_queue);
1685         }
1686
1687         if (inta & ~handled)
1688                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1689
1690         if (inta & ~CSR_INI_SET_MASK) {
1691                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1692                          inta & ~CSR_INI_SET_MASK);
1693                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1694         }
1695
1696         /* Re-enable all interrupts */
1697         /* only Re-enable if diabled by irq */
1698         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1699                 iwl4965_enable_interrupts(priv);
1700
1701 #ifdef CONFIG_IWLWIFI_DEBUG
1702         if (priv->debug_level & (IWL_DL_ISR)) {
1703                 inta = iwl_read32(priv, CSR_INT);
1704                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1705                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1706                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1707                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1708         }
1709 #endif
1710         spin_unlock_irqrestore(&priv->lock, flags);
1711 }
1712
1713 static irqreturn_t iwl4965_isr(int irq, void *data)
1714 {
1715         struct iwl_priv *priv = data;
1716         u32 inta, inta_mask;
1717         u32 inta_fh;
1718         if (!priv)
1719                 return IRQ_NONE;
1720
1721         spin_lock(&priv->lock);
1722
1723         /* Disable (but don't clear!) interrupts here to avoid
1724          *    back-to-back ISRs and sporadic interrupts from our NIC.
1725          * If we have something to service, the tasklet will re-enable ints.
1726          * If we *don't* have something, we'll re-enable before leaving here. */
1727         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1728         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1729
1730         /* Discover which interrupts are active/pending */
1731         inta = iwl_read32(priv, CSR_INT);
1732         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1733
1734         /* Ignore interrupt if there's nothing in NIC to service.
1735          * This may be due to IRQ shared with another device,
1736          * or due to sporadic interrupts thrown from our NIC. */
1737         if (!inta && !inta_fh) {
1738                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1739                 goto none;
1740         }
1741
1742         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1743                 /* Hardware disappeared. It might have already raised
1744                  * an interrupt */
1745                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1746                 goto unplugged;
1747         }
1748
1749         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1750                       inta, inta_mask, inta_fh);
1751
1752         inta &= ~CSR_INT_BIT_SCD;
1753
1754         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1755         if (likely(inta || inta_fh))
1756                 tasklet_schedule(&priv->irq_tasklet);
1757
1758  unplugged:
1759         spin_unlock(&priv->lock);
1760         return IRQ_HANDLED;
1761
1762  none:
1763         /* re-enable interrupts here since we don't have anything to service. */
1764         /* only Re-enable if diabled by irq */
1765         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1766                 iwl4965_enable_interrupts(priv);
1767         spin_unlock(&priv->lock);
1768         return IRQ_NONE;
1769 }
1770
1771 /******************************************************************************
1772  *
1773  * uCode download functions
1774  *
1775  ******************************************************************************/
1776
1777 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1778 {
1779         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1780         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1781         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1782         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1783         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1784         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1785 }
1786
1787 static void iwl4965_nic_start(struct iwl_priv *priv)
1788 {
1789         /* Remove all resets to allow NIC to operate */
1790         iwl_write32(priv, CSR_RESET, 0);
1791 }
1792
1793
1794 /**
1795  * iwl4965_read_ucode - Read uCode images from disk file.
1796  *
1797  * Copy into buffers for card to fetch via bus-mastering
1798  */
1799 static int iwl4965_read_ucode(struct iwl_priv *priv)
1800 {
1801         struct iwl_ucode *ucode;
1802         int ret;
1803         const struct firmware *ucode_raw;
1804         const char *name = priv->cfg->fw_name;
1805         u8 *src;
1806         size_t len;
1807         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1808
1809         /* Ask kernel firmware_class module to get the boot firmware off disk.
1810          * request_firmware() is synchronous, file is in memory on return. */
1811         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1812         if (ret < 0) {
1813                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1814                                         name, ret);
1815                 goto error;
1816         }
1817
1818         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1819                        name, ucode_raw->size);
1820
1821         /* Make sure that we got at least our header! */
1822         if (ucode_raw->size < sizeof(*ucode)) {
1823                 IWL_ERROR("File size way too small!\n");
1824                 ret = -EINVAL;
1825                 goto err_release;
1826         }
1827
1828         /* Data from ucode file:  header followed by uCode images */
1829         ucode = (void *)ucode_raw->data;
1830
1831         ver = le32_to_cpu(ucode->ver);
1832         inst_size = le32_to_cpu(ucode->inst_size);
1833         data_size = le32_to_cpu(ucode->data_size);
1834         init_size = le32_to_cpu(ucode->init_size);
1835         init_data_size = le32_to_cpu(ucode->init_data_size);
1836         boot_size = le32_to_cpu(ucode->boot_size);
1837
1838         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1839         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1840                        inst_size);
1841         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1842                        data_size);
1843         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1844                        init_size);
1845         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1846                        init_data_size);
1847         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1848                        boot_size);
1849
1850         /* Verify size of file vs. image size info in file's header */
1851         if (ucode_raw->size < sizeof(*ucode) +
1852                 inst_size + data_size + init_size +
1853                 init_data_size + boot_size) {
1854
1855                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1856                                (int)ucode_raw->size);
1857                 ret = -EINVAL;
1858                 goto err_release;
1859         }
1860
1861         /* Verify that uCode images will fit in card's SRAM */
1862         if (inst_size > priv->hw_params.max_inst_size) {
1863                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1864                                inst_size);
1865                 ret = -EINVAL;
1866                 goto err_release;
1867         }
1868
1869         if (data_size > priv->hw_params.max_data_size) {
1870                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1871                                 data_size);
1872                 ret = -EINVAL;
1873                 goto err_release;
1874         }
1875         if (init_size > priv->hw_params.max_inst_size) {
1876                 IWL_DEBUG_INFO
1877                     ("uCode init instr len %d too large to fit in\n",
1878                       init_size);
1879                 ret = -EINVAL;
1880                 goto err_release;
1881         }
1882         if (init_data_size > priv->hw_params.max_data_size) {
1883                 IWL_DEBUG_INFO
1884                     ("uCode init data len %d too large to fit in\n",
1885                       init_data_size);
1886                 ret = -EINVAL;
1887                 goto err_release;
1888         }
1889         if (boot_size > priv->hw_params.max_bsm_size) {
1890                 IWL_DEBUG_INFO
1891                     ("uCode boot instr len %d too large to fit in\n",
1892                       boot_size);
1893                 ret = -EINVAL;
1894                 goto err_release;
1895         }
1896
1897         /* Allocate ucode buffers for card's bus-master loading ... */
1898
1899         /* Runtime instructions and 2 copies of data:
1900          * 1) unmodified from disk
1901          * 2) backup cache for save/restore during power-downs */
1902         priv->ucode_code.len = inst_size;
1903         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1904
1905         priv->ucode_data.len = data_size;
1906         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1907
1908         priv->ucode_data_backup.len = data_size;
1909         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1910
1911         /* Initialization instructions and data */
1912         if (init_size && init_data_size) {
1913                 priv->ucode_init.len = init_size;
1914                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1915
1916                 priv->ucode_init_data.len = init_data_size;
1917                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1918
1919                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1920                         goto err_pci_alloc;
1921         }
1922
1923         /* Bootstrap (instructions only, no data) */
1924         if (boot_size) {
1925                 priv->ucode_boot.len = boot_size;
1926                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1927
1928                 if (!priv->ucode_boot.v_addr)
1929                         goto err_pci_alloc;
1930         }
1931
1932         /* Copy images into buffers for card's bus-master reads ... */
1933
1934         /* Runtime instructions (first block of data in file) */
1935         src = &ucode->data[0];
1936         len = priv->ucode_code.len;
1937         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1938         memcpy(priv->ucode_code.v_addr, src, len);
1939         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1940                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1941
1942         /* Runtime data (2nd block)
1943          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1944         src = &ucode->data[inst_size];
1945         len = priv->ucode_data.len;
1946         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1947         memcpy(priv->ucode_data.v_addr, src, len);
1948         memcpy(priv->ucode_data_backup.v_addr, src, len);
1949
1950         /* Initialization instructions (3rd block) */
1951         if (init_size) {
1952                 src = &ucode->data[inst_size + data_size];
1953                 len = priv->ucode_init.len;
1954                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1955                                 len);
1956                 memcpy(priv->ucode_init.v_addr, src, len);
1957         }
1958
1959         /* Initialization data (4th block) */
1960         if (init_data_size) {
1961                 src = &ucode->data[inst_size + data_size + init_size];
1962                 len = priv->ucode_init_data.len;
1963                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1964                                len);
1965                 memcpy(priv->ucode_init_data.v_addr, src, len);
1966         }
1967
1968         /* Bootstrap instructions (5th block) */
1969         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1970         len = priv->ucode_boot.len;
1971         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1972         memcpy(priv->ucode_boot.v_addr, src, len);
1973
1974         /* We have our copies now, allow OS release its copies */
1975         release_firmware(ucode_raw);
1976         return 0;
1977
1978  err_pci_alloc:
1979         IWL_ERROR("failed to allocate pci memory\n");
1980         ret = -ENOMEM;
1981         iwl4965_dealloc_ucode_pci(priv);
1982
1983  err_release:
1984         release_firmware(ucode_raw);
1985
1986  error:
1987         return ret;
1988 }
1989
1990 /**
1991  * iwl_alive_start - called after REPLY_ALIVE notification received
1992  *                   from protocol/runtime uCode (initialization uCode's
1993  *                   Alive gets handled by iwl_init_alive_start()).
1994  */
1995 static void iwl_alive_start(struct iwl_priv *priv)
1996 {
1997         int ret = 0;
1998
1999         IWL_DEBUG_INFO("Runtime Alive received.\n");
2000
2001         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2002                 /* We had an error bringing up the hardware, so take it
2003                  * all the way back down so we can try again */
2004                 IWL_DEBUG_INFO("Alive failed.\n");
2005                 goto restart;
2006         }
2007
2008         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2009          * This is a paranoid check, because we would not have gotten the
2010          * "runtime" alive if code weren't properly loaded.  */
2011         if (iwl_verify_ucode(priv)) {
2012                 /* Runtime instruction load was bad;
2013                  * take it all the way back down so we can try again */
2014                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2015                 goto restart;
2016         }
2017
2018         iwl_clear_stations_table(priv);
2019         ret = priv->cfg->ops->lib->alive_notify(priv);
2020         if (ret) {
2021                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2022                             ret);
2023                 goto restart;
2024         }
2025
2026         /* After the ALIVE response, we can send host commands to 4965 uCode */
2027         set_bit(STATUS_ALIVE, &priv->status);
2028
2029         if (iwl_is_rfkill(priv))
2030                 return;
2031
2032         ieee80211_wake_queues(priv->hw);
2033
2034         priv->active_rate = priv->rates_mask;
2035         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2036
2037         if (iwl_is_associated(priv)) {
2038                 struct iwl_rxon_cmd *active_rxon =
2039                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2040
2041                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2042                        sizeof(priv->staging_rxon));
2043                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2044         } else {
2045                 /* Initialize our rx_config data */
2046                 iwl4965_connection_init_rx_config(priv);
2047                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2048         }
2049
2050         /* Configure Bluetooth device coexistence support */
2051         iwl4965_send_bt_config(priv);
2052
2053         iwl_reset_run_time_calib(priv);
2054
2055         /* Configure the adapter for unassociated operation */
2056         iwl4965_commit_rxon(priv);
2057
2058         /* At this point, the NIC is initialized and operational */
2059         iwl_rf_kill_ct_config(priv);
2060
2061         iwl_leds_register(priv);
2062
2063         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2064         set_bit(STATUS_READY, &priv->status);
2065         wake_up_interruptible(&priv->wait_command_queue);
2066
2067         if (priv->error_recovering)
2068                 iwl4965_error_recovery(priv);
2069
2070         iwl_power_update_mode(priv, 1);
2071
2072         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2073                 iwl4965_set_mode(priv, priv->iw_mode);
2074
2075         return;
2076
2077  restart:
2078         queue_work(priv->workqueue, &priv->restart);
2079 }
2080
2081 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2082
2083 static void __iwl4965_down(struct iwl_priv *priv)
2084 {
2085         unsigned long flags;
2086         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2087
2088         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2089
2090         if (!exit_pending)
2091                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2092
2093         iwl_leds_unregister(priv);
2094
2095         iwl_clear_stations_table(priv);
2096
2097         /* Unblock any waiting calls */
2098         wake_up_interruptible_all(&priv->wait_command_queue);
2099
2100         /* Wipe out the EXIT_PENDING status bit if we are not actually
2101          * exiting the module */
2102         if (!exit_pending)
2103                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2104
2105         /* stop and reset the on-board processor */
2106         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2107
2108         /* tell the device to stop sending interrupts */
2109         spin_lock_irqsave(&priv->lock, flags);
2110         iwl4965_disable_interrupts(priv);
2111         spin_unlock_irqrestore(&priv->lock, flags);
2112         iwl_synchronize_irq(priv);
2113
2114         if (priv->mac80211_registered)
2115                 ieee80211_stop_queues(priv->hw);
2116
2117         /* If we have not previously called iwl4965_init() then
2118          * clear all bits but the RF Kill and SUSPEND bits and return */
2119         if (!iwl_is_init(priv)) {
2120                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2121                                         STATUS_RF_KILL_HW |
2122                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2123                                         STATUS_RF_KILL_SW |
2124                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2125                                         STATUS_GEO_CONFIGURED |
2126                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2127                                         STATUS_IN_SUSPEND |
2128                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2129                                         STATUS_EXIT_PENDING;
2130                 goto exit;
2131         }
2132
2133         /* ...otherwise clear out all the status bits but the RF Kill and
2134          * SUSPEND bits and continue taking the NIC down. */
2135         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2136                                 STATUS_RF_KILL_HW |
2137                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2138                                 STATUS_RF_KILL_SW |
2139                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2140                                 STATUS_GEO_CONFIGURED |
2141                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2142                                 STATUS_IN_SUSPEND |
2143                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2144                                 STATUS_FW_ERROR |
2145                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2146                                 STATUS_EXIT_PENDING;
2147
2148         spin_lock_irqsave(&priv->lock, flags);
2149         iwl_clear_bit(priv, CSR_GP_CNTRL,
2150                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2151         spin_unlock_irqrestore(&priv->lock, flags);
2152
2153         iwl_txq_ctx_stop(priv);
2154         iwl_rxq_stop(priv);
2155
2156         spin_lock_irqsave(&priv->lock, flags);
2157         if (!iwl_grab_nic_access(priv)) {
2158                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2159                                          APMG_CLK_VAL_DMA_CLK_RQT);
2160                 iwl_release_nic_access(priv);
2161         }
2162         spin_unlock_irqrestore(&priv->lock, flags);
2163
2164         udelay(5);
2165
2166         /* FIXME: apm_ops.suspend(priv) */
2167         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2168                 priv->cfg->ops->lib->apm_ops.stop(priv);
2169         else
2170                 priv->cfg->ops->lib->apm_ops.reset(priv);
2171         priv->cfg->ops->lib->free_shared_mem(priv);
2172
2173  exit:
2174         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2175
2176         if (priv->ibss_beacon)
2177                 dev_kfree_skb(priv->ibss_beacon);
2178         priv->ibss_beacon = NULL;
2179
2180         /* clear out any free frames */
2181         iwl_clear_free_frames(priv);
2182 }
2183
2184 static void iwl4965_down(struct iwl_priv *priv)
2185 {
2186         mutex_lock(&priv->mutex);
2187         __iwl4965_down(priv);
2188         mutex_unlock(&priv->mutex);
2189
2190         iwl_cancel_deferred_work(priv);
2191 }
2192
2193 #define MAX_HW_RESTARTS 5
2194
2195 static int __iwl4965_up(struct iwl_priv *priv)
2196 {
2197         int i;
2198         int ret;
2199
2200         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2201                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2202                 return -EIO;
2203         }
2204
2205         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2206                 IWL_ERROR("ucode not available for device bringup\n");
2207                 return -EIO;
2208         }
2209
2210         /* If platform's RF_KILL switch is NOT set to KILL */
2211         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2212                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2213         else
2214                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2215
2216         if (iwl_is_rfkill(priv)) {
2217                 iwl4965_enable_interrupts(priv);
2218                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2219                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2220                 return 0;
2221         }
2222
2223         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2224
2225         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2226         if (ret) {
2227                 IWL_ERROR("Unable to allocate shared memory\n");
2228                 return ret;
2229         }
2230
2231         ret = iwl_hw_nic_init(priv);
2232         if (ret) {
2233                 IWL_ERROR("Unable to init nic\n");
2234                 return ret;
2235         }
2236
2237         /* make sure rfkill handshake bits are cleared */
2238         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2239         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2240                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2241
2242         /* clear (again), then enable host interrupts */
2243         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2244         iwl4965_enable_interrupts(priv);
2245
2246         /* really make sure rfkill handshake bits are cleared */
2247         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2248         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2249
2250         /* Copy original ucode data image from disk into backup cache.
2251          * This will be used to initialize the on-board processor's
2252          * data SRAM for a clean start when the runtime program first loads. */
2253         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2254                priv->ucode_data.len);
2255
2256         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2257
2258                 iwl_clear_stations_table(priv);
2259
2260                 /* load bootstrap state machine,
2261                  * load bootstrap program into processor's memory,
2262                  * prepare to load the "initialize" uCode */
2263                 ret = priv->cfg->ops->lib->load_ucode(priv);
2264
2265                 if (ret) {
2266                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2267                         continue;
2268                 }
2269
2270                 /* Clear out the uCode error bit if it is set */
2271                 clear_bit(STATUS_FW_ERROR, &priv->status);
2272
2273                 /* start card; "initialize" will load runtime ucode */
2274                 iwl4965_nic_start(priv);
2275
2276                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2277
2278                 return 0;
2279         }
2280
2281         set_bit(STATUS_EXIT_PENDING, &priv->status);
2282         __iwl4965_down(priv);
2283         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2284
2285         /* tried to restart and config the device for as long as our
2286          * patience could withstand */
2287         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2288         return -EIO;
2289 }
2290
2291
2292 /*****************************************************************************
2293  *
2294  * Workqueue callbacks
2295  *
2296  *****************************************************************************/
2297
2298 static void iwl_bg_init_alive_start(struct work_struct *data)
2299 {
2300         struct iwl_priv *priv =
2301             container_of(data, struct iwl_priv, init_alive_start.work);
2302
2303         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2304                 return;
2305
2306         mutex_lock(&priv->mutex);
2307         priv->cfg->ops->lib->init_alive_start(priv);
2308         mutex_unlock(&priv->mutex);
2309 }
2310
2311 static void iwl_bg_alive_start(struct work_struct *data)
2312 {
2313         struct iwl_priv *priv =
2314             container_of(data, struct iwl_priv, alive_start.work);
2315
2316         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2317                 return;
2318
2319         mutex_lock(&priv->mutex);
2320         iwl_alive_start(priv);
2321         mutex_unlock(&priv->mutex);
2322         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2323 }
2324
2325 static void iwl4965_bg_rf_kill(struct work_struct *work)
2326 {
2327         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2328
2329         wake_up_interruptible(&priv->wait_command_queue);
2330
2331         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2332                 return;
2333
2334         mutex_lock(&priv->mutex);
2335
2336         if (!iwl_is_rfkill(priv)) {
2337                 IWL_DEBUG(IWL_DL_RF_KILL,
2338                           "HW and/or SW RF Kill no longer active, restarting "
2339                           "device\n");
2340                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2341                         queue_work(priv->workqueue, &priv->restart);
2342         } else {
2343                 /* make sure mac80211 stop sending Tx frame */
2344                 if (priv->mac80211_registered)
2345                         ieee80211_stop_queues(priv->hw);
2346
2347                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2348                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2349                                           "disabled by SW switch\n");
2350                 else
2351                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2352                                     "Kill switch must be turned off for "
2353                                     "wireless networking to work.\n");
2354         }
2355         mutex_unlock(&priv->mutex);
2356         iwl_rfkill_set_hw_state(priv);
2357 }
2358
2359 static void iwl4965_bg_set_monitor(struct work_struct *work)
2360 {
2361         struct iwl_priv *priv = container_of(work,
2362                                 struct iwl_priv, set_monitor);
2363         int ret;
2364
2365         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2366
2367         mutex_lock(&priv->mutex);
2368
2369         ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2370
2371         if (ret) {
2372                 if (ret == -EAGAIN)
2373                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2374                 else
2375                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2376         }
2377
2378         mutex_unlock(&priv->mutex);
2379 }
2380
2381 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2382 {
2383         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2384                         run_time_calib_work);
2385
2386         mutex_lock(&priv->mutex);
2387
2388         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2389             test_bit(STATUS_SCANNING, &priv->status)) {
2390                 mutex_unlock(&priv->mutex);
2391                 return;
2392         }
2393
2394         if (priv->start_calib) {
2395                 iwl_chain_noise_calibration(priv, &priv->statistics);
2396
2397                 iwl_sensitivity_calibration(priv, &priv->statistics);
2398         }
2399
2400         mutex_unlock(&priv->mutex);
2401         return;
2402 }
2403
2404 static void iwl4965_bg_up(struct work_struct *data)
2405 {
2406         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2407
2408         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2409                 return;
2410
2411         mutex_lock(&priv->mutex);
2412         __iwl4965_up(priv);
2413         mutex_unlock(&priv->mutex);
2414         iwl_rfkill_set_hw_state(priv);
2415 }
2416
2417 static void iwl4965_bg_restart(struct work_struct *data)
2418 {
2419         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2420
2421         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2422                 return;
2423
2424         iwl4965_down(priv);
2425         queue_work(priv->workqueue, &priv->up);
2426 }
2427
2428 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2429 {
2430         struct iwl_priv *priv =
2431             container_of(data, struct iwl_priv, rx_replenish);
2432
2433         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2434                 return;
2435
2436         mutex_lock(&priv->mutex);
2437         iwl_rx_replenish(priv);
2438         mutex_unlock(&priv->mutex);
2439 }
2440
2441 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2442
2443 static void iwl4965_post_associate(struct iwl_priv *priv)
2444 {
2445         struct ieee80211_conf *conf = NULL;
2446         int ret = 0;
2447         unsigned long flags;
2448
2449         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2450                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2451                 return;
2452         }
2453
2454         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2455                         priv->assoc_id, priv->active_rxon.bssid_addr);
2456
2457
2458         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2459                 return;
2460
2461
2462         if (!priv->vif || !priv->is_open)
2463                 return;
2464
2465         iwl_power_cancel_timeout(priv);
2466         iwl_scan_cancel_timeout(priv, 200);
2467
2468         conf = ieee80211_get_hw_conf(priv->hw);
2469
2470         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2471         iwl4965_commit_rxon(priv);
2472
2473         iwl_setup_rxon_timing(priv);
2474         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2475                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2476         if (ret)
2477                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2478                             "Attempting to continue.\n");
2479
2480         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2481
2482         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2483
2484         iwl_set_rxon_chain(priv);
2485         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2486
2487         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2488                         priv->assoc_id, priv->beacon_int);
2489
2490         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2491                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2492         else
2493                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2494
2495         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2496                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2497                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2498                 else
2499                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2500
2501                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2502                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2503
2504         }
2505
2506         iwl4965_commit_rxon(priv);
2507
2508         switch (priv->iw_mode) {
2509         case NL80211_IFTYPE_STATION:
2510                 break;
2511
2512         case NL80211_IFTYPE_ADHOC:
2513
2514                 /* assume default assoc id */
2515                 priv->assoc_id = 1;
2516
2517                 iwl_rxon_add_station(priv, priv->bssid, 0);
2518                 iwl4965_send_beacon_cmd(priv);
2519
2520                 break;
2521
2522         default:
2523                 IWL_ERROR("%s Should not be called in %d mode\n",
2524                           __func__, priv->iw_mode);
2525                 break;
2526         }
2527
2528         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2529                 priv->assoc_station_added = 1;
2530
2531         spin_lock_irqsave(&priv->lock, flags);
2532         iwl_activate_qos(priv, 0);
2533         spin_unlock_irqrestore(&priv->lock, flags);
2534
2535         /* the chain noise calibration will enabled PM upon completion
2536          * If chain noise has already been run, then we need to enable
2537          * power management here */
2538         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2539                 iwl_power_enable_management(priv);
2540
2541         /* Enable Rx differential gain and sensitivity calibrations */
2542         iwl_chain_noise_reset(priv);
2543         priv->start_calib = 1;
2544
2545 }
2546
2547 /*****************************************************************************
2548  *
2549  * mac80211 entry point functions
2550  *
2551  *****************************************************************************/
2552
2553 #define UCODE_READY_TIMEOUT     (4 * HZ)
2554
2555 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2556 {
2557         struct iwl_priv *priv = hw->priv;
2558         int ret;
2559         u16 pci_cmd;
2560
2561         IWL_DEBUG_MAC80211("enter\n");
2562
2563         if (pci_enable_device(priv->pci_dev)) {
2564                 IWL_ERROR("Fail to pci_enable_device\n");
2565                 return -ENODEV;
2566         }
2567         pci_restore_state(priv->pci_dev);
2568         pci_enable_msi(priv->pci_dev);
2569
2570         /* enable interrupts if needed: hw bug w/a */
2571         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2572         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2573                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2574                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2575         }
2576
2577         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2578                           DRV_NAME, priv);
2579         if (ret) {
2580                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2581                 goto out_disable_msi;
2582         }
2583
2584         /* we should be verifying the device is ready to be opened */
2585         mutex_lock(&priv->mutex);
2586
2587         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2588         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2589          * ucode filename and max sizes are card-specific. */
2590
2591         if (!priv->ucode_code.len) {
2592                 ret = iwl4965_read_ucode(priv);
2593                 if (ret) {
2594                         IWL_ERROR("Could not read microcode: %d\n", ret);
2595                         mutex_unlock(&priv->mutex);
2596                         goto out_release_irq;
2597                 }
2598         }
2599
2600         ret = __iwl4965_up(priv);
2601
2602         mutex_unlock(&priv->mutex);
2603
2604         iwl_rfkill_set_hw_state(priv);
2605
2606         if (ret)
2607                 goto out_release_irq;
2608
2609         if (iwl_is_rfkill(priv))
2610                 goto out;
2611
2612         IWL_DEBUG_INFO("Start UP work done.\n");
2613
2614         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2615                 return 0;
2616
2617         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2618          * mac80211 will not be run successfully. */
2619         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2620                         test_bit(STATUS_READY, &priv->status),
2621                         UCODE_READY_TIMEOUT);
2622         if (!ret) {
2623                 if (!test_bit(STATUS_READY, &priv->status)) {
2624                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2625                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2626                         ret = -ETIMEDOUT;
2627                         goto out_release_irq;
2628                 }
2629         }
2630
2631 out:
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                 mutex_unlock(&priv->mutex);
2666         }
2667
2668         iwl4965_down(priv);
2669
2670         flush_workqueue(priv->workqueue);
2671         free_irq(priv->pci_dev->irq, priv);
2672         pci_disable_msi(priv->pci_dev);
2673         pci_save_state(priv->pci_dev);
2674         pci_disable_device(priv->pci_dev);
2675
2676         IWL_DEBUG_MAC80211("leave\n");
2677 }
2678
2679 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2680 {
2681         struct iwl_priv *priv = hw->priv;
2682
2683         IWL_DEBUG_MACDUMP("enter\n");
2684
2685         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2686                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2687
2688         if (iwl_tx_skb(priv, skb))
2689                 dev_kfree_skb_any(skb);
2690
2691         IWL_DEBUG_MACDUMP("leave\n");
2692         return 0;
2693 }
2694
2695 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2696                                  struct ieee80211_if_init_conf *conf)
2697 {
2698         struct iwl_priv *priv = hw->priv;
2699         unsigned long flags;
2700
2701         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2702
2703         if (priv->vif) {
2704                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2705                 return -EOPNOTSUPP;
2706         }
2707
2708         spin_lock_irqsave(&priv->lock, flags);
2709         priv->vif = conf->vif;
2710
2711         spin_unlock_irqrestore(&priv->lock, flags);
2712
2713         mutex_lock(&priv->mutex);
2714
2715         if (conf->mac_addr) {
2716                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2717                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2718         }
2719
2720         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2721                 /* we are not ready, will run again when ready */
2722                 set_bit(STATUS_MODE_PENDING, &priv->status);
2723
2724         mutex_unlock(&priv->mutex);
2725
2726         IWL_DEBUG_MAC80211("leave\n");
2727         return 0;
2728 }
2729
2730 /**
2731  * iwl4965_mac_config - mac80211 config callback
2732  *
2733  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2734  * be set inappropriately and the driver currently sets the hardware up to
2735  * use it whenever needed.
2736  */
2737 static int iwl4965_mac_config(struct ieee80211_hw *hw, u32 changed)
2738 {
2739         struct iwl_priv *priv = hw->priv;
2740         const struct iwl_channel_info *ch_info;
2741         struct ieee80211_conf *conf = &hw->conf;
2742         unsigned long flags;
2743         int ret = 0;
2744         u16 channel;
2745
2746         mutex_lock(&priv->mutex);
2747         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2748
2749         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2750                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2751                 goto out;
2752         }
2753
2754         if (!conf->radio_enabled)
2755                 iwl_radio_kill_sw_disable_radio(priv);
2756
2757         if (!iwl_is_ready(priv)) {
2758                 IWL_DEBUG_MAC80211("leave - not ready\n");
2759                 ret = -EIO;
2760                 goto out;
2761         }
2762
2763         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2764                      test_bit(STATUS_SCANNING, &priv->status))) {
2765                 IWL_DEBUG_MAC80211("leave - scanning\n");
2766                 mutex_unlock(&priv->mutex);
2767                 return 0;
2768         }
2769
2770         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2771         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2772         if (!is_channel_valid(ch_info)) {
2773                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2774                 ret = -EINVAL;
2775                 goto out;
2776         }
2777
2778         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2779             !is_channel_ibss(ch_info)) {
2780                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2781                         conf->channel->hw_value, conf->channel->band);
2782                 ret = -EINVAL;
2783                 goto out;
2784         }
2785
2786         spin_lock_irqsave(&priv->lock, flags);
2787
2788
2789         /* if we are switching from ht to 2.4 clear flags
2790          * from any ht related info since 2.4 does not
2791          * support ht */
2792         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2793 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2794             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2795 #endif
2796         )
2797                 priv->staging_rxon.flags = 0;
2798
2799         iwl_set_rxon_channel(priv, conf->channel);
2800
2801         iwl_set_flags_for_band(priv, conf->channel->band);
2802
2803         /* The list of supported rates and rate mask can be different
2804          * for each band; since the band may have changed, reset
2805          * the rate mask to what mac80211 lists */
2806         iwl4965_set_rate(priv);
2807
2808         spin_unlock_irqrestore(&priv->lock, flags);
2809
2810 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2811         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2812                 iwl4965_hw_channel_switch(priv, conf->channel);
2813                 goto out;
2814         }
2815 #endif
2816
2817         if (!conf->radio_enabled) {
2818                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2819                 goto out;
2820         }
2821
2822         if (iwl_is_rfkill(priv)) {
2823                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2824                 ret = -EIO;
2825                 goto out;
2826         }
2827
2828         if (conf->flags & IEEE80211_CONF_PS)
2829                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2830         else
2831                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2832         if (ret)
2833                 IWL_DEBUG_MAC80211("Error setting power level\n");
2834
2835         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2836                            priv->tx_power_user_lmt, conf->power_level);
2837
2838         iwl_set_tx_power(priv, conf->power_level, false);
2839
2840         iwl4965_set_rate(priv);
2841
2842         if (memcmp(&priv->active_rxon,
2843                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2844                 iwl4965_commit_rxon(priv);
2845         else
2846                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2847
2848         IWL_DEBUG_MAC80211("leave\n");
2849
2850 out:
2851         mutex_unlock(&priv->mutex);
2852         return ret;
2853 }
2854
2855 static void iwl4965_config_ap(struct iwl_priv *priv)
2856 {
2857         int ret = 0;
2858         unsigned long flags;
2859
2860         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2861                 return;
2862
2863         /* The following should be done only at AP bring up */
2864         if (!iwl_is_associated(priv)) {
2865
2866                 /* RXON - unassoc (to set timing command) */
2867                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2868                 iwl4965_commit_rxon(priv);
2869
2870                 /* RXON Timing */
2871                 iwl_setup_rxon_timing(priv);
2872                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2873                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2874                 if (ret)
2875                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2876                                         "Attempting to continue.\n");
2877
2878                 iwl_set_rxon_chain(priv);
2879
2880                 /* FIXME: what should be the assoc_id for AP? */
2881                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2882                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2883                         priv->staging_rxon.flags |=
2884                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2885                 else
2886                         priv->staging_rxon.flags &=
2887                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2888
2889                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2890                         if (priv->assoc_capability &
2891                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2892                                 priv->staging_rxon.flags |=
2893                                         RXON_FLG_SHORT_SLOT_MSK;
2894                         else
2895                                 priv->staging_rxon.flags &=
2896                                         ~RXON_FLG_SHORT_SLOT_MSK;
2897
2898                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2899                                 priv->staging_rxon.flags &=
2900                                         ~RXON_FLG_SHORT_SLOT_MSK;
2901                 }
2902                 /* restore RXON assoc */
2903                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2904                 iwl4965_commit_rxon(priv);
2905                 spin_lock_irqsave(&priv->lock, flags);
2906                 iwl_activate_qos(priv, 1);
2907                 spin_unlock_irqrestore(&priv->lock, flags);
2908                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2909         }
2910         iwl4965_send_beacon_cmd(priv);
2911
2912         /* FIXME - we need to add code here to detect a totally new
2913          * configuration, reset the AP, unassoc, rxon timing, assoc,
2914          * clear sta table, add BCAST sta... */
2915 }
2916
2917 /* temporary */
2918 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2919
2920 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2921                                         struct ieee80211_vif *vif,
2922                                     struct ieee80211_if_conf *conf)
2923 {
2924         struct iwl_priv *priv = hw->priv;
2925         unsigned long flags;
2926         int rc;
2927
2928         if (conf == NULL)
2929                 return -EIO;
2930
2931         if (priv->vif != vif) {
2932                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2933                 return 0;
2934         }
2935
2936         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2937             conf->changed & IEEE80211_IFCC_BEACON) {
2938                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2939                 if (!beacon)
2940                         return -ENOMEM;
2941                 rc = iwl4965_mac_beacon_update(hw, beacon);
2942                 if (rc)
2943                         return rc;
2944         }
2945
2946         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2947             (!conf->ssid_len)) {
2948                 IWL_DEBUG_MAC80211
2949                     ("Leaving in AP mode because HostAPD is not ready.\n");
2950                 return 0;
2951         }
2952
2953         if (!iwl_is_alive(priv))
2954                 return -EAGAIN;
2955
2956         mutex_lock(&priv->mutex);
2957
2958         if (conf->bssid)
2959                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2960
2961 /*
2962  * very dubious code was here; the probe filtering flag is never set:
2963  *
2964         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2965             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2966  */
2967
2968         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2969                 if (!conf->bssid) {
2970                         conf->bssid = priv->mac_addr;
2971                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2972                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2973                                            conf->bssid);
2974                 }
2975                 if (priv->ibss_beacon)
2976                         dev_kfree_skb(priv->ibss_beacon);
2977
2978                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2979         }
2980
2981         if (iwl_is_rfkill(priv))
2982                 goto done;
2983
2984         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2985             !is_multicast_ether_addr(conf->bssid)) {
2986                 /* If there is currently a HW scan going on in the background
2987                  * then we need to cancel it else the RXON below will fail. */
2988                 if (iwl_scan_cancel_timeout(priv, 100)) {
2989                         IWL_WARNING("Aborted scan still in progress "
2990                                     "after 100ms\n");
2991                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2992                         mutex_unlock(&priv->mutex);
2993                         return -EAGAIN;
2994                 }
2995                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2996
2997                 /* TODO: Audit driver for usage of these members and see
2998                  * if mac80211 deprecates them (priv->bssid looks like it
2999                  * shouldn't be there, but I haven't scanned the IBSS code
3000                  * to verify) - jpk */
3001                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3002
3003                 if (priv->iw_mode == NL80211_IFTYPE_AP)
3004                         iwl4965_config_ap(priv);
3005                 else {
3006                         rc = iwl4965_commit_rxon(priv);
3007                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3008                                 iwl_rxon_add_station(
3009                                         priv, priv->active_rxon.bssid_addr, 1);
3010                 }
3011
3012         } else {
3013                 iwl_scan_cancel_timeout(priv, 100);
3014                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3015                 iwl4965_commit_rxon(priv);
3016         }
3017
3018  done:
3019         spin_lock_irqsave(&priv->lock, flags);
3020         if (!conf->ssid_len)
3021                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3022         else
3023                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3024
3025         priv->essid_len = conf->ssid_len;
3026         spin_unlock_irqrestore(&priv->lock, flags);
3027
3028         IWL_DEBUG_MAC80211("leave\n");
3029         mutex_unlock(&priv->mutex);
3030
3031         return 0;
3032 }
3033
3034 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3035                                  unsigned int changed_flags,
3036                                  unsigned int *total_flags,
3037                                  int mc_count, struct dev_addr_list *mc_list)
3038 {
3039         struct iwl_priv *priv = hw->priv;
3040
3041         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3042                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3043                                    NL80211_IFTYPE_MONITOR,
3044                                    changed_flags, *total_flags);
3045                 /* queue work 'cuz mac80211 is holding a lock which
3046                  * prevents us from issuing (synchronous) f/w cmds */
3047                 queue_work(priv->workqueue, &priv->set_monitor);
3048         }
3049         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3050                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3051 }
3052
3053 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3054                                      struct ieee80211_if_init_conf *conf)
3055 {
3056         struct iwl_priv *priv = hw->priv;
3057
3058         IWL_DEBUG_MAC80211("enter\n");
3059
3060         mutex_lock(&priv->mutex);
3061
3062         if (iwl_is_ready_rf(priv)) {
3063                 iwl_scan_cancel_timeout(priv, 100);
3064                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3065                 iwl4965_commit_rxon(priv);
3066         }
3067         if (priv->vif == conf->vif) {
3068                 priv->vif = NULL;
3069                 memset(priv->bssid, 0, ETH_ALEN);
3070                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3071                 priv->essid_len = 0;
3072         }
3073         mutex_unlock(&priv->mutex);
3074
3075         IWL_DEBUG_MAC80211("leave\n");
3076
3077 }
3078
3079 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3080 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3081                                      struct ieee80211_vif *vif,
3082                                      struct ieee80211_bss_conf *bss_conf,
3083                                      u32 changes)
3084 {
3085         struct iwl_priv *priv = hw->priv;
3086
3087         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3088
3089         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3090                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3091                                    bss_conf->use_short_preamble);
3092                 if (bss_conf->use_short_preamble)
3093                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3094                 else
3095                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3096         }
3097
3098         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3099                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3100                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3101                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3102                 else
3103                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3104         }
3105
3106         if (changes & BSS_CHANGED_HT) {
3107                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3108                 iwl4965_ht_conf(priv, bss_conf);
3109                 iwl_set_rxon_chain(priv);
3110         }
3111
3112         if (changes & BSS_CHANGED_ASSOC) {
3113                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3114                 /* This should never happen as this function should
3115                  * never be called from interrupt context. */
3116                 if (WARN_ON_ONCE(in_interrupt()))
3117                         return;
3118                 if (bss_conf->assoc) {
3119                         priv->assoc_id = bss_conf->aid;
3120                         priv->beacon_int = bss_conf->beacon_int;
3121                         priv->power_data.dtim_period = bss_conf->dtim_period;
3122                         priv->timestamp = bss_conf->timestamp;
3123                         priv->assoc_capability = bss_conf->assoc_capability;
3124
3125                         /* we have just associated, don't start scan too early
3126                          * leave time for EAPOL exchange to complete
3127                          */
3128                         priv->next_scan_jiffies = jiffies +
3129                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3130                         mutex_lock(&priv->mutex);
3131                         iwl4965_post_associate(priv);
3132                         mutex_unlock(&priv->mutex);
3133                 } else {
3134                         priv->assoc_id = 0;
3135                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3136                 }
3137         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3138                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3139                         iwl_send_rxon_assoc(priv);
3140         }
3141
3142 }
3143
3144 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3145 {
3146         unsigned long flags;
3147         struct iwl_priv *priv = hw->priv;
3148         int ret;
3149
3150         IWL_DEBUG_MAC80211("enter\n");
3151
3152         mutex_lock(&priv->mutex);
3153         spin_lock_irqsave(&priv->lock, flags);
3154
3155         if (!iwl_is_ready_rf(priv)) {
3156                 ret = -EIO;
3157                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3158                 goto out_unlock;
3159         }
3160
3161         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3162                 ret = -EIO;
3163                 IWL_ERROR("ERROR: APs don't scan\n");
3164                 goto out_unlock;
3165         }
3166
3167         /* We don't schedule scan within next_scan_jiffies period.
3168          * Avoid scanning during possible EAPOL exchange, return
3169          * success immediately.
3170          */
3171         if (priv->next_scan_jiffies &&
3172             time_after(priv->next_scan_jiffies, jiffies)) {
3173                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3174                 queue_work(priv->workqueue, &priv->scan_completed);
3175                 ret = 0;
3176                 goto out_unlock;
3177         }
3178
3179         /* if we just finished scan ask for delay */
3180         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3181             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3182                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3183                 queue_work(priv->workqueue, &priv->scan_completed);
3184                 ret = 0;
3185                 goto out_unlock;
3186         }
3187
3188         if (ssid_len) {
3189                 priv->one_direct_scan = 1;
3190                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3191                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3192         } else {
3193                 priv->one_direct_scan = 0;
3194         }
3195
3196         ret = iwl_scan_initiate(priv);
3197
3198         IWL_DEBUG_MAC80211("leave\n");
3199
3200 out_unlock:
3201         spin_unlock_irqrestore(&priv->lock, flags);
3202         mutex_unlock(&priv->mutex);
3203
3204         return ret;
3205 }
3206
3207 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3208                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3209                         u32 iv32, u16 *phase1key)
3210 {
3211         struct iwl_priv *priv = hw->priv;
3212         u8 sta_id = IWL_INVALID_STATION;
3213         unsigned long flags;
3214         __le16 key_flags = 0;
3215         int i;
3216
3217         IWL_DEBUG_MAC80211("enter\n");
3218
3219         sta_id = iwl_find_station(priv, addr);
3220         if (sta_id == IWL_INVALID_STATION) {
3221                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3222                                    addr);
3223                 return;
3224         }
3225
3226         iwl_scan_cancel_timeout(priv, 100);
3227
3228         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3229         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3230         key_flags &= ~STA_KEY_FLG_INVALID;
3231
3232         if (sta_id == priv->hw_params.bcast_sta_id)
3233                 key_flags |= STA_KEY_MULTICAST_MSK;
3234
3235         spin_lock_irqsave(&priv->sta_lock, flags);
3236
3237         priv->stations[sta_id].sta.key.key_flags = key_flags;
3238         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3239
3240         for (i = 0; i < 5; i++)
3241                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3242                         cpu_to_le16(phase1key[i]);
3243
3244         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3245         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3246
3247         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3248
3249         spin_unlock_irqrestore(&priv->sta_lock, flags);
3250
3251         IWL_DEBUG_MAC80211("leave\n");
3252 }
3253
3254 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3255                            const u8 *local_addr, const u8 *addr,
3256                            struct ieee80211_key_conf *key)
3257 {
3258         struct iwl_priv *priv = hw->priv;
3259         int ret = 0;
3260         u8 sta_id = IWL_INVALID_STATION;
3261         u8 is_default_wep_key = 0;
3262
3263         IWL_DEBUG_MAC80211("enter\n");
3264
3265         if (priv->hw_params.sw_crypto) {
3266                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3267                 return -EOPNOTSUPP;
3268         }
3269
3270         if (is_zero_ether_addr(addr))
3271                 /* only support pairwise keys */
3272                 return -EOPNOTSUPP;
3273
3274         sta_id = iwl_find_station(priv, addr);
3275         if (sta_id == IWL_INVALID_STATION) {
3276                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3277                                    addr);
3278                 return -EINVAL;
3279
3280         }
3281
3282         mutex_lock(&priv->mutex);
3283         iwl_scan_cancel_timeout(priv, 100);
3284         mutex_unlock(&priv->mutex);
3285
3286         /* If we are getting WEP group key and we didn't receive any key mapping
3287          * so far, we are in legacy wep mode (group key only), otherwise we are
3288          * in 1X mode.
3289          * In legacy wep mode, we use another host command to the uCode */
3290         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3291                 priv->iw_mode != NL80211_IFTYPE_AP) {
3292                 if (cmd == SET_KEY)
3293                         is_default_wep_key = !priv->key_mapping_key;
3294                 else
3295                         is_default_wep_key =
3296                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3297         }
3298
3299         switch (cmd) {
3300         case SET_KEY:
3301                 if (is_default_wep_key)
3302                         ret = iwl_set_default_wep_key(priv, key);
3303                 else
3304                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3305
3306                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3307                 break;
3308         case DISABLE_KEY:
3309                 if (is_default_wep_key)
3310                         ret = iwl_remove_default_wep_key(priv, key);
3311                 else
3312                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3313
3314                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3315                 break;
3316         default:
3317                 ret = -EINVAL;
3318         }
3319
3320         IWL_DEBUG_MAC80211("leave\n");
3321
3322         return ret;
3323 }
3324
3325 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3326                            const struct ieee80211_tx_queue_params *params)
3327 {
3328         struct iwl_priv *priv = hw->priv;
3329         unsigned long flags;
3330         int q;
3331
3332         IWL_DEBUG_MAC80211("enter\n");
3333
3334         if (!iwl_is_ready_rf(priv)) {
3335                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3336                 return -EIO;
3337         }
3338
3339         if (queue >= AC_NUM) {
3340                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3341                 return 0;
3342         }
3343
3344         if (!priv->qos_data.qos_enable) {
3345                 priv->qos_data.qos_active = 0;
3346                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3347                 return 0;
3348         }
3349         q = AC_NUM - 1 - queue;
3350
3351         spin_lock_irqsave(&priv->lock, flags);
3352
3353         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3354         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3355         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3356         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3357                         cpu_to_le16((params->txop * 32));
3358
3359         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3360         priv->qos_data.qos_active = 1;
3361
3362         if (priv->iw_mode == NL80211_IFTYPE_AP)
3363                 iwl_activate_qos(priv, 1);
3364         else if (priv->assoc_id && iwl_is_associated(priv))
3365                 iwl_activate_qos(priv, 0);
3366
3367         spin_unlock_irqrestore(&priv->lock, flags);
3368
3369         IWL_DEBUG_MAC80211("leave\n");
3370         return 0;
3371 }
3372
3373 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3374                              enum ieee80211_ampdu_mlme_action action,
3375                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3376 {
3377         struct iwl_priv *priv = hw->priv;
3378
3379         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3380                      sta->addr, tid);
3381
3382         if (!(priv->cfg->sku & IWL_SKU_N))
3383                 return -EACCES;
3384
3385         switch (action) {
3386         case IEEE80211_AMPDU_RX_START:
3387                 IWL_DEBUG_HT("start Rx\n");
3388                 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3389         case IEEE80211_AMPDU_RX_STOP:
3390                 IWL_DEBUG_HT("stop Rx\n");
3391                 return iwl_rx_agg_stop(priv, sta->addr, tid);
3392         case IEEE80211_AMPDU_TX_START:
3393                 IWL_DEBUG_HT("start Tx\n");
3394                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3395         case IEEE80211_AMPDU_TX_STOP:
3396                 IWL_DEBUG_HT("stop Tx\n");
3397                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3398         default:
3399                 IWL_DEBUG_HT("unknown\n");
3400                 return -EINVAL;
3401                 break;
3402         }
3403         return 0;
3404 }
3405 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3406                                 struct ieee80211_tx_queue_stats *stats)
3407 {
3408         struct iwl_priv *priv = hw->priv;
3409         int i, avail;
3410         struct iwl_tx_queue *txq;
3411         struct iwl_queue *q;
3412         unsigned long flags;
3413
3414         IWL_DEBUG_MAC80211("enter\n");
3415
3416         if (!iwl_is_ready_rf(priv)) {
3417                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3418                 return -EIO;
3419         }
3420
3421         spin_lock_irqsave(&priv->lock, flags);
3422
3423         for (i = 0; i < AC_NUM; i++) {
3424                 txq = &priv->txq[i];
3425                 q = &txq->q;
3426                 avail = iwl_queue_space(q);
3427
3428                 stats[i].len = q->n_window - avail;
3429                 stats[i].limit = q->n_window - q->high_mark;
3430                 stats[i].count = q->n_window;
3431
3432         }
3433         spin_unlock_irqrestore(&priv->lock, flags);
3434
3435         IWL_DEBUG_MAC80211("leave\n");
3436
3437         return 0;
3438 }
3439
3440 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3441                              struct ieee80211_low_level_stats *stats)
3442 {
3443         struct iwl_priv *priv = hw->priv;
3444
3445         priv = hw->priv;
3446         IWL_DEBUG_MAC80211("enter\n");
3447         IWL_DEBUG_MAC80211("leave\n");
3448
3449         return 0;
3450 }
3451
3452 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3453 {
3454         struct iwl_priv *priv = hw->priv;
3455         unsigned long flags;
3456
3457         mutex_lock(&priv->mutex);
3458         IWL_DEBUG_MAC80211("enter\n");
3459
3460         spin_lock_irqsave(&priv->lock, flags);
3461         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3462         spin_unlock_irqrestore(&priv->lock, flags);
3463
3464         iwl_reset_qos(priv);
3465
3466         spin_lock_irqsave(&priv->lock, flags);
3467         priv->assoc_id = 0;
3468         priv->assoc_capability = 0;
3469         priv->assoc_station_added = 0;
3470
3471         /* new association get rid of ibss beacon skb */
3472         if (priv->ibss_beacon)
3473                 dev_kfree_skb(priv->ibss_beacon);
3474
3475         priv->ibss_beacon = NULL;
3476
3477         priv->beacon_int = priv->hw->conf.beacon_int;
3478         priv->timestamp = 0;
3479         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3480                 priv->beacon_int = 0;
3481
3482         spin_unlock_irqrestore(&priv->lock, flags);
3483
3484         if (!iwl_is_ready_rf(priv)) {
3485                 IWL_DEBUG_MAC80211("leave - not ready\n");
3486                 mutex_unlock(&priv->mutex);
3487                 return;
3488         }
3489
3490         /* we are restarting association process
3491          * clear RXON_FILTER_ASSOC_MSK bit
3492          */
3493         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3494                 iwl_scan_cancel_timeout(priv, 100);
3495                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3496                 iwl4965_commit_rxon(priv);
3497         }
3498
3499         iwl_power_update_mode(priv, 0);
3500
3501         /* Per mac80211.h: This is only used in IBSS mode... */
3502         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3503
3504                 /* switch to CAM during association period.
3505                  * the ucode will block any association/authentication
3506                  * frome during assiciation period if it can not hear
3507                  * the AP because of PM. the timer enable PM back is
3508                  * association do not complete
3509                  */
3510                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3511                                                      IEEE80211_CHAN_RADAR))
3512                                 iwl_power_disable_management(priv, 3000);
3513
3514                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3515                 mutex_unlock(&priv->mutex);
3516                 return;
3517         }
3518
3519         iwl4965_set_rate(priv);
3520
3521         mutex_unlock(&priv->mutex);
3522
3523         IWL_DEBUG_MAC80211("leave\n");
3524 }
3525
3526 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3527 {
3528         struct iwl_priv *priv = hw->priv;
3529         unsigned long flags;
3530         __le64 timestamp;
3531
3532         mutex_lock(&priv->mutex);
3533         IWL_DEBUG_MAC80211("enter\n");
3534
3535         if (!iwl_is_ready_rf(priv)) {
3536                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3537                 mutex_unlock(&priv->mutex);
3538                 return -EIO;
3539         }
3540
3541         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3542                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3543                 mutex_unlock(&priv->mutex);
3544                 return -EIO;
3545         }
3546
3547         spin_lock_irqsave(&priv->lock, flags);
3548
3549         if (priv->ibss_beacon)
3550                 dev_kfree_skb(priv->ibss_beacon);
3551
3552         priv->ibss_beacon = skb;
3553
3554         priv->assoc_id = 0;
3555         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3556         priv->timestamp = le64_to_cpu(timestamp);
3557
3558         IWL_DEBUG_MAC80211("leave\n");
3559         spin_unlock_irqrestore(&priv->lock, flags);
3560
3561         iwl_reset_qos(priv);
3562
3563         iwl4965_post_associate(priv);
3564
3565         mutex_unlock(&priv->mutex);
3566
3567         return 0;
3568 }
3569
3570 /*****************************************************************************
3571  *
3572  * sysfs attributes
3573  *
3574  *****************************************************************************/
3575
3576 #ifdef CONFIG_IWLWIFI_DEBUG
3577
3578 /*
3579  * The following adds a new attribute to the sysfs representation
3580  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3581  * used for controlling the debug level.
3582  *
3583  * See the level definitions in iwl for details.
3584  */
3585
3586 static ssize_t show_debug_level(struct device *d,
3587                                 struct device_attribute *attr, char *buf)
3588 {
3589         struct iwl_priv *priv = d->driver_data;
3590
3591         return sprintf(buf, "0x%08X\n", priv->debug_level);
3592 }
3593 static ssize_t store_debug_level(struct device *d,
3594                                 struct device_attribute *attr,
3595                                  const char *buf, size_t count)
3596 {
3597         struct iwl_priv *priv = d->driver_data;
3598         unsigned long val;
3599         int ret;
3600
3601         ret = strict_strtoul(buf, 0, &val);
3602         if (ret)
3603                 printk(KERN_INFO DRV_NAME
3604                        ": %s is not in hex or decimal form.\n", buf);
3605         else
3606                 priv->debug_level = val;
3607
3608         return strnlen(buf, count);
3609 }
3610
3611 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3612                         show_debug_level, store_debug_level);
3613
3614
3615 #endif /* CONFIG_IWLWIFI_DEBUG */
3616
3617
3618 static ssize_t show_version(struct device *d,
3619                                 struct device_attribute *attr, char *buf)
3620 {
3621         struct iwl_priv *priv = d->driver_data;
3622         struct iwl_alive_resp *palive = &priv->card_alive;
3623         ssize_t pos = 0;
3624         u16 eeprom_ver;
3625
3626         if (palive->is_valid)
3627                 pos += sprintf(buf + pos,
3628                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3629                                 "fw type: 0x%01X 0x%01X\n",
3630                                 palive->ucode_major, palive->ucode_minor,
3631                                 palive->sw_rev[0], palive->sw_rev[1],
3632                                 palive->ver_type, palive->ver_subtype);
3633         else
3634                 pos += sprintf(buf + pos, "fw not loaded\n");
3635
3636         if (priv->eeprom) {
3637                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3638                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3639                                  eeprom_ver);
3640         } else {
3641                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3642         }
3643
3644         return pos;
3645 }
3646
3647 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3648
3649 static ssize_t show_temperature(struct device *d,
3650                                 struct device_attribute *attr, char *buf)
3651 {
3652         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3653
3654         if (!iwl_is_alive(priv))
3655                 return -EAGAIN;
3656
3657         return sprintf(buf, "%d\n", priv->temperature);
3658 }
3659
3660 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3661
3662 static ssize_t show_tx_power(struct device *d,
3663                              struct device_attribute *attr, char *buf)
3664 {
3665         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3666         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3667 }
3668
3669 static ssize_t store_tx_power(struct device *d,
3670                               struct device_attribute *attr,
3671                               const char *buf, size_t count)
3672 {
3673         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3674         unsigned long val;
3675         int ret;
3676
3677         ret = strict_strtoul(buf, 10, &val);
3678         if (ret)
3679                 printk(KERN_INFO DRV_NAME
3680                        ": %s is not in decimal form.\n", buf);
3681         else
3682                 iwl_set_tx_power(priv, val, false);
3683
3684         return count;
3685 }
3686
3687 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3688
3689 static ssize_t show_flags(struct device *d,
3690                           struct device_attribute *attr, char *buf)
3691 {
3692         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3693
3694         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3695 }
3696
3697 static ssize_t store_flags(struct device *d,
3698                            struct device_attribute *attr,
3699                            const char *buf, size_t count)
3700 {
3701         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3702         unsigned long val;
3703         u32 flags;
3704         int ret = strict_strtoul(buf, 0, &val);
3705         if (ret)
3706                 return ret;
3707         flags = (u32)val;
3708
3709         mutex_lock(&priv->mutex);
3710         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3711                 /* Cancel any currently running scans... */
3712                 if (iwl_scan_cancel_timeout(priv, 100))
3713                         IWL_WARNING("Could not cancel scan.\n");
3714                 else {
3715                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3716                         priv->staging_rxon.flags = cpu_to_le32(flags);
3717                         iwl4965_commit_rxon(priv);
3718                 }
3719         }
3720         mutex_unlock(&priv->mutex);
3721
3722         return count;
3723 }
3724
3725 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3726
3727 static ssize_t show_filter_flags(struct device *d,
3728                                  struct device_attribute *attr, char *buf)
3729 {
3730         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3731
3732         return sprintf(buf, "0x%04X\n",
3733                 le32_to_cpu(priv->active_rxon.filter_flags));
3734 }
3735
3736 static ssize_t store_filter_flags(struct device *d,
3737                                   struct device_attribute *attr,
3738                                   const char *buf, size_t count)
3739 {
3740         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3741         unsigned long val;
3742         u32 filter_flags;
3743         int ret = strict_strtoul(buf, 0, &val);
3744         if (ret)
3745                 return ret;
3746         filter_flags = (u32)val;
3747
3748         mutex_lock(&priv->mutex);
3749         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3750                 /* Cancel any currently running scans... */
3751                 if (iwl_scan_cancel_timeout(priv, 100))
3752                         IWL_WARNING("Could not cancel scan.\n");
3753                 else {
3754                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3755                                        "0x%04X\n", filter_flags);
3756                         priv->staging_rxon.filter_flags =
3757                                 cpu_to_le32(filter_flags);
3758                         iwl4965_commit_rxon(priv);
3759                 }
3760         }
3761         mutex_unlock(&priv->mutex);
3762
3763         return count;
3764 }
3765
3766 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3767                    store_filter_flags);
3768
3769 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3770
3771 static ssize_t show_measurement(struct device *d,
3772                                 struct device_attribute *attr, char *buf)
3773 {
3774         struct iwl_priv *priv = dev_get_drvdata(d);
3775         struct iwl4965_spectrum_notification measure_report;
3776         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3777         u8 *data = (u8 *)&measure_report;
3778         unsigned long flags;
3779
3780         spin_lock_irqsave(&priv->lock, flags);
3781         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3782                 spin_unlock_irqrestore(&priv->lock, flags);
3783                 return 0;
3784         }
3785         memcpy(&measure_report, &priv->measure_report, size);
3786         priv->measurement_status = 0;
3787         spin_unlock_irqrestore(&priv->lock, flags);
3788
3789         while (size && (PAGE_SIZE - len)) {
3790                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3791                                    PAGE_SIZE - len, 1);
3792                 len = strlen(buf);
3793                 if (PAGE_SIZE - len)
3794                         buf[len++] = '\n';
3795
3796                 ofs += 16;
3797                 size -= min(size, 16U);
3798         }
3799
3800         return len;
3801 }
3802
3803 static ssize_t store_measurement(struct device *d,
3804                                  struct device_attribute *attr,
3805                                  const char *buf, size_t count)
3806 {
3807         struct iwl_priv *priv = dev_get_drvdata(d);
3808         struct ieee80211_measurement_params params = {
3809                 .channel = le16_to_cpu(priv->active_rxon.channel),
3810                 .start_time = cpu_to_le64(priv->last_tsf),
3811                 .duration = cpu_to_le16(1),
3812         };
3813         u8 type = IWL_MEASURE_BASIC;
3814         u8 buffer[32];
3815         u8 channel;
3816
3817         if (count) {
3818                 char *p = buffer;
3819                 strncpy(buffer, buf, min(sizeof(buffer), count));
3820                 channel = simple_strtoul(p, NULL, 0);
3821                 if (channel)
3822                         params.channel = channel;
3823
3824                 p = buffer;
3825                 while (*p && *p != ' ')
3826                         p++;
3827                 if (*p)
3828                         type = simple_strtoul(p + 1, NULL, 0);
3829         }
3830
3831         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3832                        "channel %d (for '%s')\n", type, params.channel, buf);
3833         iwl4965_get_measurement(priv, &params, type);
3834
3835         return count;
3836 }
3837
3838 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3839                    show_measurement, store_measurement);
3840 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3841
3842 static ssize_t store_retry_rate(struct device *d,
3843                                 struct device_attribute *attr,
3844                                 const char *buf, size_t count)
3845 {
3846         struct iwl_priv *priv = dev_get_drvdata(d);
3847         long val;
3848         int ret  = strict_strtol(buf, 10, &val);
3849         if (!ret)
3850                 return ret;
3851
3852         priv->retry_rate = (val > 0) ? val : 1;
3853
3854         return count;
3855 }
3856
3857 static ssize_t show_retry_rate(struct device *d,
3858                                struct device_attribute *attr, char *buf)
3859 {
3860         struct iwl_priv *priv = dev_get_drvdata(d);
3861         return sprintf(buf, "%d", priv->retry_rate);
3862 }
3863
3864 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3865                    store_retry_rate);
3866
3867 static ssize_t store_power_level(struct device *d,
3868                                  struct device_attribute *attr,
3869                                  const char *buf, size_t count)
3870 {
3871         struct iwl_priv *priv = dev_get_drvdata(d);
3872         int ret;
3873         unsigned long mode;
3874
3875
3876         mutex_lock(&priv->mutex);
3877
3878         if (!iwl_is_ready(priv)) {
3879                 ret = -EAGAIN;
3880                 goto out;
3881         }
3882
3883         ret = strict_strtoul(buf, 10, &mode);
3884         if (ret)
3885                 goto out;
3886
3887         ret = iwl_power_set_user_mode(priv, mode);
3888         if (ret) {
3889                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3890                 goto out;
3891         }
3892         ret = count;
3893
3894  out:
3895         mutex_unlock(&priv->mutex);
3896         return ret;
3897 }
3898
3899 static ssize_t show_power_level(struct device *d,
3900                                 struct device_attribute *attr, char *buf)
3901 {
3902         struct iwl_priv *priv = dev_get_drvdata(d);
3903         int mode = priv->power_data.user_power_setting;
3904         int system = priv->power_data.system_power_setting;
3905         int level = priv->power_data.power_mode;
3906         char *p = buf;
3907
3908         switch (system) {
3909         case IWL_POWER_SYS_AUTO:
3910                 p += sprintf(p, "SYSTEM:auto");
3911                 break;
3912         case IWL_POWER_SYS_AC:
3913                 p += sprintf(p, "SYSTEM:ac");
3914                 break;
3915         case IWL_POWER_SYS_BATTERY:
3916                 p += sprintf(p, "SYSTEM:battery");
3917                 break;
3918         }
3919
3920         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3921         p += sprintf(p, "\tINDEX:%d", level);
3922         p += sprintf(p, "\n");
3923         return p - buf + 1;
3924 }
3925
3926 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3927                    store_power_level);
3928
3929 static ssize_t show_channels(struct device *d,
3930                              struct device_attribute *attr, char *buf)
3931 {
3932
3933         struct iwl_priv *priv = dev_get_drvdata(d);
3934         struct ieee80211_channel *channels = NULL;
3935         const struct ieee80211_supported_band *supp_band = NULL;
3936         int len = 0, i;
3937         int count = 0;
3938
3939         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3940                 return -EAGAIN;
3941
3942         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3943         channels = supp_band->channels;
3944         count = supp_band->n_channels;
3945
3946         len += sprintf(&buf[len],
3947                         "Displaying %d channels in 2.4GHz band "
3948                         "(802.11bg):\n", count);
3949
3950         for (i = 0; i < count; i++)
3951                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3952                                 ieee80211_frequency_to_channel(
3953                                 channels[i].center_freq),
3954                                 channels[i].max_power,
3955                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3956                                 " (IEEE 802.11h required)" : "",
3957                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3958                                 || (channels[i].flags &
3959                                 IEEE80211_CHAN_RADAR)) ? "" :
3960                                 ", IBSS",
3961                                 channels[i].flags &
3962                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3963                                 "passive only" : "active/passive");
3964
3965         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3966         channels = supp_band->channels;
3967         count = supp_band->n_channels;
3968
3969         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3970                         "(802.11a):\n", count);
3971
3972         for (i = 0; i < count; i++)
3973                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3974                                 ieee80211_frequency_to_channel(
3975                                 channels[i].center_freq),
3976                                 channels[i].max_power,
3977                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3978                                 " (IEEE 802.11h required)" : "",
3979                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3980                                 || (channels[i].flags &
3981                                 IEEE80211_CHAN_RADAR)) ? "" :
3982                                 ", IBSS",
3983                                 channels[i].flags &
3984                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3985                                 "passive only" : "active/passive");
3986
3987         return len;
3988 }
3989
3990 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3991
3992 static ssize_t show_statistics(struct device *d,
3993                                struct device_attribute *attr, char *buf)
3994 {
3995         struct iwl_priv *priv = dev_get_drvdata(d);
3996         u32 size = sizeof(struct iwl_notif_statistics);
3997         u32 len = 0, ofs = 0;
3998         u8 *data = (u8 *)&priv->statistics;
3999         int rc = 0;
4000
4001         if (!iwl_is_alive(priv))
4002                 return -EAGAIN;
4003
4004         mutex_lock(&priv->mutex);
4005         rc = iwl_send_statistics_request(priv, 0);
4006         mutex_unlock(&priv->mutex);
4007
4008         if (rc) {
4009                 len = sprintf(buf,
4010                               "Error sending statistics request: 0x%08X\n", rc);
4011                 return len;
4012         }
4013
4014         while (size && (PAGE_SIZE - len)) {
4015                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4016                                    PAGE_SIZE - len, 1);
4017                 len = strlen(buf);
4018                 if (PAGE_SIZE - len)
4019                         buf[len++] = '\n';
4020
4021                 ofs += 16;
4022                 size -= min(size, 16U);
4023         }
4024
4025         return len;
4026 }
4027
4028 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4029
4030 static ssize_t show_status(struct device *d,
4031                            struct device_attribute *attr, char *buf)
4032 {
4033         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4034         if (!iwl_is_alive(priv))
4035                 return -EAGAIN;
4036         return sprintf(buf, "0x%08x\n", (int)priv->status);
4037 }
4038
4039 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4040
4041 /*****************************************************************************
4042  *
4043  * driver setup and teardown
4044  *
4045  *****************************************************************************/
4046
4047 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4048 {
4049         priv->workqueue = create_workqueue(DRV_NAME);
4050
4051         init_waitqueue_head(&priv->wait_command_queue);
4052
4053         INIT_WORK(&priv->up, iwl4965_bg_up);
4054         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4055         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4056         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4057         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4058         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4059         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4060         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4061         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4062
4063         iwl_setup_scan_deferred_work(priv);
4064         iwl_setup_power_deferred_work(priv);
4065
4066         if (priv->cfg->ops->lib->setup_deferred_work)
4067                 priv->cfg->ops->lib->setup_deferred_work(priv);
4068
4069         init_timer(&priv->statistics_periodic);
4070         priv->statistics_periodic.data = (unsigned long)priv;
4071         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4072
4073         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4074                      iwl4965_irq_tasklet, (unsigned long)priv);
4075 }
4076
4077 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4078 {
4079         if (priv->cfg->ops->lib->cancel_deferred_work)
4080                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4081
4082         cancel_delayed_work_sync(&priv->init_alive_start);
4083         cancel_delayed_work(&priv->scan_check);
4084         cancel_delayed_work_sync(&priv->set_power_save);
4085         cancel_delayed_work(&priv->alive_start);
4086         cancel_work_sync(&priv->beacon_update);
4087         del_timer_sync(&priv->statistics_periodic);
4088 }
4089
4090 static struct attribute *iwl4965_sysfs_entries[] = {
4091         &dev_attr_channels.attr,
4092         &dev_attr_flags.attr,
4093         &dev_attr_filter_flags.attr,
4094 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4095         &dev_attr_measurement.attr,
4096 #endif
4097         &dev_attr_power_level.attr,
4098         &dev_attr_retry_rate.attr,
4099         &dev_attr_statistics.attr,
4100         &dev_attr_status.attr,
4101         &dev_attr_temperature.attr,
4102         &dev_attr_tx_power.attr,
4103 #ifdef CONFIG_IWLWIFI_DEBUG
4104         &dev_attr_debug_level.attr,
4105 #endif
4106         &dev_attr_version.attr,
4107
4108         NULL
4109 };
4110
4111 static struct attribute_group iwl4965_attribute_group = {
4112         .name = NULL,           /* put in device directory */
4113         .attrs = iwl4965_sysfs_entries,
4114 };
4115
4116 static struct ieee80211_ops iwl4965_hw_ops = {
4117         .tx = iwl4965_mac_tx,
4118         .start = iwl4965_mac_start,
4119         .stop = iwl4965_mac_stop,
4120         .add_interface = iwl4965_mac_add_interface,
4121         .remove_interface = iwl4965_mac_remove_interface,
4122         .config = iwl4965_mac_config,
4123         .config_interface = iwl4965_mac_config_interface,
4124         .configure_filter = iwl4965_configure_filter,
4125         .set_key = iwl4965_mac_set_key,
4126         .update_tkip_key = iwl4965_mac_update_tkip_key,
4127         .get_stats = iwl4965_mac_get_stats,
4128         .get_tx_stats = iwl4965_mac_get_tx_stats,
4129         .conf_tx = iwl4965_mac_conf_tx,
4130         .reset_tsf = iwl4965_mac_reset_tsf,
4131         .bss_info_changed = iwl4965_bss_info_changed,
4132         .ampdu_action = iwl4965_mac_ampdu_action,
4133         .hw_scan = iwl_mac_hw_scan
4134 };
4135
4136 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4137 {
4138         int err = 0;
4139         struct iwl_priv *priv;
4140         struct ieee80211_hw *hw;
4141         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4142         unsigned long flags;
4143
4144         /************************
4145          * 1. Allocating HW data
4146          ************************/
4147
4148         /* Disabling hardware scan means that mac80211 will perform scans
4149          * "the hard way", rather than using device's scan. */
4150         if (cfg->mod_params->disable_hw_scan) {
4151                 if (cfg->mod_params->debug & IWL_DL_INFO)
4152                         dev_printk(KERN_DEBUG, &(pdev->dev),
4153                                    "Disabling hw_scan\n");
4154                 iwl4965_hw_ops.hw_scan = NULL;
4155         }
4156
4157         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4158         if (!hw) {
4159                 err = -ENOMEM;
4160                 goto out;
4161         }
4162         priv = hw->priv;
4163         /* At this point both hw and priv are allocated. */
4164
4165         SET_IEEE80211_DEV(hw, &pdev->dev);
4166
4167         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4168         priv->cfg = cfg;
4169         priv->pci_dev = pdev;
4170
4171 #ifdef CONFIG_IWLWIFI_DEBUG
4172         priv->debug_level = priv->cfg->mod_params->debug;
4173         atomic_set(&priv->restrict_refcnt, 0);
4174 #endif
4175
4176         /**************************
4177          * 2. Initializing PCI bus
4178          **************************/
4179         if (pci_enable_device(pdev)) {
4180                 err = -ENODEV;
4181                 goto out_ieee80211_free_hw;
4182         }
4183
4184         pci_set_master(pdev);
4185
4186         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4187         if (!err)
4188                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4189         if (err) {
4190                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4191                 if (!err)
4192                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4193                 /* both attempts failed: */
4194                 if (err) {
4195                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4196                                 DRV_NAME);
4197                         goto out_pci_disable_device;
4198                 }
4199         }
4200
4201         err = pci_request_regions(pdev, DRV_NAME);
4202         if (err)
4203                 goto out_pci_disable_device;
4204
4205         pci_set_drvdata(pdev, priv);
4206
4207
4208         /***********************
4209          * 3. Read REV register
4210          ***********************/
4211         priv->hw_base = pci_iomap(pdev, 0, 0);
4212         if (!priv->hw_base) {
4213                 err = -ENODEV;
4214                 goto out_pci_release_regions;
4215         }
4216
4217         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4218                 (unsigned long long) pci_resource_len(pdev, 0));
4219         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4220
4221         iwl_hw_detect(priv);
4222         printk(KERN_INFO DRV_NAME
4223                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4224                 priv->cfg->name, priv->hw_rev);
4225
4226         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4227          * PCI Tx retries from interfering with C3 CPU state */
4228         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4229
4230         /* amp init */
4231         err = priv->cfg->ops->lib->apm_ops.init(priv);
4232         if (err < 0) {
4233                 IWL_DEBUG_INFO("Failed to init APMG\n");
4234                 goto out_iounmap;
4235         }
4236         /*****************
4237          * 4. Read EEPROM
4238          *****************/
4239         /* Read the EEPROM */
4240         err = iwl_eeprom_init(priv);
4241         if (err) {
4242                 IWL_ERROR("Unable to init EEPROM\n");
4243                 goto out_iounmap;
4244         }
4245         err = iwl_eeprom_check_version(priv);
4246         if (err)
4247                 goto out_iounmap;
4248
4249         /* extract MAC Address */
4250         iwl_eeprom_get_mac(priv, priv->mac_addr);
4251         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4252         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4253
4254         /************************
4255          * 5. Setup HW constants
4256          ************************/
4257         if (iwl_set_hw_params(priv)) {
4258                 IWL_ERROR("failed to set hw parameters\n");
4259                 goto out_free_eeprom;
4260         }
4261
4262         /*******************
4263          * 6. Setup priv
4264          *******************/
4265
4266         err = iwl_init_drv(priv);
4267         if (err)
4268                 goto out_free_eeprom;
4269         /* At this point both hw and priv are initialized. */
4270
4271         /**********************************
4272          * 7. Initialize module parameters
4273          **********************************/
4274
4275         /* Disable radio (SW RF KILL) via parameter when loading driver */
4276         if (priv->cfg->mod_params->disable) {
4277                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4278                 IWL_DEBUG_INFO("Radio disabled.\n");
4279         }
4280
4281         /********************
4282          * 8. Setup services
4283          ********************/
4284         spin_lock_irqsave(&priv->lock, flags);
4285         iwl4965_disable_interrupts(priv);
4286         spin_unlock_irqrestore(&priv->lock, flags);
4287
4288         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4289         if (err) {
4290                 IWL_ERROR("failed to create sysfs device attributes\n");
4291                 goto out_uninit_drv;
4292         }
4293
4294
4295         iwl_setup_deferred_work(priv);
4296         iwl_setup_rx_handlers(priv);
4297
4298         /********************
4299          * 9. Conclude
4300          ********************/
4301         pci_save_state(pdev);
4302         pci_disable_device(pdev);
4303
4304         /**********************************
4305          * 10. Setup and register mac80211
4306          **********************************/
4307
4308         err = iwl_setup_mac(priv);
4309         if (err)
4310                 goto out_remove_sysfs;
4311
4312         err = iwl_dbgfs_register(priv, DRV_NAME);
4313         if (err)
4314                 IWL_ERROR("failed to create debugfs files\n");
4315
4316         err = iwl_rfkill_init(priv);
4317         if (err)
4318                 IWL_ERROR("Unable to initialize RFKILL system. "
4319                                   "Ignoring error: %d\n", err);
4320         iwl_power_initialize(priv);
4321         return 0;
4322
4323  out_remove_sysfs:
4324         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4325  out_uninit_drv:
4326         iwl_uninit_drv(priv);
4327  out_free_eeprom:
4328         iwl_eeprom_free(priv);
4329  out_iounmap:
4330         pci_iounmap(pdev, priv->hw_base);
4331  out_pci_release_regions:
4332         pci_release_regions(pdev);
4333         pci_set_drvdata(pdev, NULL);
4334  out_pci_disable_device:
4335         pci_disable_device(pdev);
4336  out_ieee80211_free_hw:
4337         ieee80211_free_hw(priv->hw);
4338  out:
4339         return err;
4340 }
4341
4342 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4343 {
4344         struct iwl_priv *priv = pci_get_drvdata(pdev);
4345         unsigned long flags;
4346
4347         if (!priv)
4348                 return;
4349
4350         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4351
4352         iwl_dbgfs_unregister(priv);
4353         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4354
4355         /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4356          * to be called and iwl4965_down since we are removing the device
4357          * we need to set STATUS_EXIT_PENDING bit.
4358          */
4359         set_bit(STATUS_EXIT_PENDING, &priv->status);
4360         if (priv->mac80211_registered) {
4361                 ieee80211_unregister_hw(priv->hw);
4362                 priv->mac80211_registered = 0;
4363         } else {
4364                 iwl4965_down(priv);
4365         }
4366
4367         /* make sure we flush any pending irq or
4368          * tasklet for the driver
4369          */
4370         spin_lock_irqsave(&priv->lock, flags);
4371         iwl4965_disable_interrupts(priv);
4372         spin_unlock_irqrestore(&priv->lock, flags);
4373
4374         iwl_synchronize_irq(priv);
4375
4376         iwl_rfkill_unregister(priv);
4377         iwl4965_dealloc_ucode_pci(priv);
4378
4379         if (priv->rxq.bd)
4380                 iwl_rx_queue_free(priv, &priv->rxq);
4381         iwl_hw_txq_ctx_free(priv);
4382
4383         iwl_clear_stations_table(priv);
4384         iwl_eeprom_free(priv);
4385
4386
4387         /*netif_stop_queue(dev); */
4388         flush_workqueue(priv->workqueue);
4389
4390         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4391          * priv->workqueue... so we can't take down the workqueue
4392          * until now... */
4393         destroy_workqueue(priv->workqueue);
4394         priv->workqueue = NULL;
4395
4396         pci_iounmap(pdev, priv->hw_base);
4397         pci_release_regions(pdev);
4398         pci_disable_device(pdev);
4399         pci_set_drvdata(pdev, NULL);
4400
4401         iwl_uninit_drv(priv);
4402
4403         if (priv->ibss_beacon)
4404                 dev_kfree_skb(priv->ibss_beacon);
4405
4406         ieee80211_free_hw(priv->hw);
4407 }
4408
4409 #ifdef CONFIG_PM
4410
4411 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4412 {
4413         struct iwl_priv *priv = pci_get_drvdata(pdev);
4414
4415         if (priv->is_open) {
4416                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4417                 iwl4965_mac_stop(priv->hw);
4418                 priv->is_open = 1;
4419         }
4420
4421         pci_set_power_state(pdev, PCI_D3hot);
4422
4423         return 0;
4424 }
4425
4426 static int iwl4965_pci_resume(struct pci_dev *pdev)
4427 {
4428         struct iwl_priv *priv = pci_get_drvdata(pdev);
4429
4430         pci_set_power_state(pdev, PCI_D0);
4431
4432         if (priv->is_open)
4433                 iwl4965_mac_start(priv->hw);
4434
4435         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4436         return 0;
4437 }
4438
4439 #endif /* CONFIG_PM */
4440
4441 /*****************************************************************************
4442  *
4443  * driver and module entry point
4444  *
4445  *****************************************************************************/
4446
4447 /* Hardware specific file defines the PCI IDs table for that hardware module */
4448 static struct pci_device_id iwl_hw_card_ids[] = {
4449 #ifdef CONFIG_IWL4965
4450         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4451         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4452 #endif /* CONFIG_IWL4965 */
4453 #ifdef CONFIG_IWL5000
4454         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4455         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4456         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4457         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4458         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4459         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4460         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4461         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4462         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4463         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4464 /* 5350 WiFi/WiMax */
4465         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4466         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4467         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4468 #endif /* CONFIG_IWL5000 */
4469         {0}
4470 };
4471 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4472
4473 static struct pci_driver iwl_driver = {
4474         .name = DRV_NAME,
4475         .id_table = iwl_hw_card_ids,
4476         .probe = iwl4965_pci_probe,
4477         .remove = __devexit_p(iwl4965_pci_remove),
4478 #ifdef CONFIG_PM
4479         .suspend = iwl4965_pci_suspend,
4480         .resume = iwl4965_pci_resume,
4481 #endif
4482 };
4483
4484 static int __init iwl4965_init(void)
4485 {
4486
4487         int ret;
4488         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4489         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4490
4491         ret = iwlagn_rate_control_register();
4492         if (ret) {
4493                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4494                 return ret;
4495         }
4496
4497         ret = pci_register_driver(&iwl_driver);
4498         if (ret) {
4499                 IWL_ERROR("Unable to initialize PCI module\n");
4500                 goto error_register;
4501         }
4502
4503         return ret;
4504
4505 error_register:
4506         iwlagn_rate_control_unregister();
4507         return ret;
4508 }
4509
4510 static void __exit iwl4965_exit(void)
4511 {
4512         pci_unregister_driver(&iwl_driver);
4513         iwlagn_rate_control_unregister();
4514 }
4515
4516 module_exit(iwl4965_exit);
4517 module_init(iwl4965_init);