SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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;
 556         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 557         struct ieee80211_sta *sta;
 558
 559         IWL_DEBUG_MAC80211("enter: \n");
 560
 561         if (!iwl_conf->is_ht)
 562                 return;
 563
 564
 565         /*
 566          * It is totally wrong to base global information on something
 567          * that is valid only when associated, alas, this driver works
 568          * that way and I don't know how to fix it.
 569          */
 570
 571         rcu_read_lock();
 572         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 573         if (!sta) {
 574                 rcu_read_unlock();
 575                 return;
 576         }
 577         ht_conf = &sta->ht_cap;
 578
 579         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 580                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 581         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 582                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 583
 584         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 585         iwl_conf->max_amsdu_size =
 586                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 587
 588         iwl_conf->supported_chan_width =
 589                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 590
 591         iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
 592         /* If no above or below channel supplied disable FAT channel */
 593         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 594             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
 595                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 596                 iwl_conf->supported_chan_width = 0;
 597         }
 598
 599         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 600
 601         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 602
 603         iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
 604         iwl_conf->ht_protection =
 605                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 606         iwl_conf->non_GF_STA_present =
 607                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 608
 609         rcu_read_unlock();
 610
 611         IWL_DEBUG_MAC80211("leave\n");
 612 }
 613
 614 /*
 615  * QoS  support
 616 */
 617 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 618 {
 619         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 620                 return;
 621
 622         if (!priv->qos_data.qos_enable)
 623                 return;
 624
 625         priv->qos_data.def_qos_parm.qos_flags = 0;
 626
 627         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 628             !priv->qos_data.qos_cap.q_AP.txop_request)
 629                 priv->qos_data.def_qos_parm.qos_flags |=
 630                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 631         if (priv->qos_data.qos_active)
 632                 priv->qos_data.def_qos_parm.qos_flags |=
 633                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 634
 635         if (priv->current_ht_config.is_ht)
 636                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 637
 638         if (force || iwl_is_associated(priv)) {
 639                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 640                                 priv->qos_data.qos_active,
 641                                 priv->qos_data.def_qos_parm.qos_flags);
 642
 643                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 644                                        sizeof(struct iwl_qosparam_cmd),
 645                                        &priv->qos_data.def_qos_parm, NULL);
 646         }
 647 }
 648
 649 #define MAX_UCODE_BEACON_INTERVAL       4096
 650
 651 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 652 {
 653         u16 new_val = 0;
 654         u16 beacon_factor = 0;
 655
 656         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 657                                         / MAX_UCODE_BEACON_INTERVAL;
 658         new_val = beacon_val / beacon_factor;
 659
 660         return new_val;
 661 }
 662
 663 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 664 {
 665         u64 tsf;
 666         s32 interval_tm, rem;
 667         unsigned long flags;
 668         struct ieee80211_conf *conf = NULL;
 669         u16 beacon_int = 0;
 670
 671         conf = ieee80211_get_hw_conf(priv->hw);
 672
 673         spin_lock_irqsave(&priv->lock, flags);
 674         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 675         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 676
 677         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 678                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 679                 priv->rxon_timing.atim_window = 0;
 680         } else {
 681                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 682
 683                 /* TODO: we need to get atim_window from upper stack
 684                  * for now we set to 0 */
 685                 priv->rxon_timing.atim_window = 0;
 686         }
 687
 688         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 689
 690         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 691         interval_tm = beacon_int * 1024;
 692         rem = do_div(tsf, interval_tm);
 693         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 694
 695         spin_unlock_irqrestore(&priv->lock, flags);
 696         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 697                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 698                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 699                         le16_to_cpu(priv->rxon_timing.atim_window));
 700 }
 701
 702 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 703                                    enum ieee80211_band band)
 704 {
 705         if (band == IEEE80211_BAND_5GHZ) {
 706                 priv->staging_rxon.flags &=
 707                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 708                       | RXON_FLG_CCK_MSK);
 709                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 710         } else {
 711                 /* Copied from iwl4965_post_associate() */
 712                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 713                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 714                 else
 715                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 716
 717                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 718                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 719
 720                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 721                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 722                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 723         }
 724 }
 725
 726 /*
 727  * initialize rxon structure with default values from eeprom
 728  */
 729 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 730 {
 731         const struct iwl_channel_info *ch_info;
 732
 733         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 734
 735         switch (priv->iw_mode) {
 736         case NL80211_IFTYPE_AP:
 737                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 738                 break;
 739
 740         case NL80211_IFTYPE_STATION:
 741                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 742                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 743                 break;
 744
 745         case NL80211_IFTYPE_ADHOC:
 746                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 747                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 748                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 749                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 750                 break;
 751
 752         case NL80211_IFTYPE_MONITOR:
 753                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 754                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 755                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 756                 break;
 757         default:
 758                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 759                 break;
 760         }
 761
 762 #if 0
 763         /* TODO:  Figure out when short_preamble would be set and cache from
 764          * that */
 765         if (!hw_to_local(priv->hw)->short_preamble)
 766                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 767         else
 768                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 769 #endif
 770
 771         ch_info = iwl_get_channel_info(priv, priv->band,
 772                                        le16_to_cpu(priv->active_rxon.channel));
 773
 774         if (!ch_info)
 775                 ch_info = &priv->channel_info[0];
 776
 777         /*
 778          * in some case A channels are all non IBSS
 779          * in this case force B/G channel
 780          */
 781         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 782             !(is_channel_ibss(ch_info)))
 783                 ch_info = &priv->channel_info[0];
 784
 785         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 786         priv->band = ch_info->band;
 787
 788         iwl_set_flags_for_band(priv, priv->band);
 789
 790         priv->staging_rxon.ofdm_basic_rates =
 791             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 792         priv->staging_rxon.cck_basic_rates =
 793             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 794
 795         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 796                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 797         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 798         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 799         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 800         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 801         iwl_set_rxon_chain(priv);
 802 }
 803
 804 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 805 {
 806         priv->iw_mode = mode;
 807
 808         iwl4965_connection_init_rx_config(priv);
 809         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 810
 811         iwl_clear_stations_table(priv);
 812
 813         /* dont commit rxon if rf-kill is on*/
 814         if (!iwl_is_ready_rf(priv))
 815                 return -EAGAIN;
 816
 817         cancel_delayed_work(&priv->scan_check);
 818         if (iwl_scan_cancel_timeout(priv, 100)) {
 819                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 820                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 821                 return -EAGAIN;
 822         }
 823
 824         iwl4965_commit_rxon(priv);
 825
 826         return 0;
 827 }
 828
 829 static void iwl4965_set_rate(struct iwl_priv *priv)
 830 {
 831         const struct ieee80211_supported_band *hw = NULL;
 832         struct ieee80211_rate *rate;
 833         int i;
 834
 835         hw = iwl_get_hw_mode(priv, priv->band);
 836         if (!hw) {
 837                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 838                 return;
 839         }
 840
 841         priv->active_rate = 0;
 842         priv->active_rate_basic = 0;
 843
 844         for (i = 0; i < hw->n_bitrates; i++) {
 845                 rate = &(hw->bitrates[i]);
 846                 if (rate->hw_value < IWL_RATE_COUNT)
 847                         priv->active_rate |= (1 << rate->hw_value);
 848         }
 849
 850         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 851                        priv->active_rate, priv->active_rate_basic);
 852
 853         /*
 854          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 855          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 856          * OFDM
 857          */
 858         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 859                 priv->staging_rxon.cck_basic_rates =
 860                     ((priv->active_rate_basic &
 861                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 862         else
 863                 priv->staging_rxon.cck_basic_rates =
 864                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 865
 866         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 867                 priv->staging_rxon.ofdm_basic_rates =
 868                     ((priv->active_rate_basic &
 869                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 870                       IWL_FIRST_OFDM_RATE) & 0xFF;
 871         else
 872                 priv->staging_rxon.ofdm_basic_rates =
 873                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 874 }
 875
 876 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 877
 878 #include "iwl-spectrum.h"
 879
 880 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 881 #define BEACON_TIME_MASK_HIGH   0xFF000000
 882 #define TIME_UNIT               1024
 883
 884 /*
 885  * extended beacon time format
 886  * time in usec will be changed into a 32-bit value in 8:24 format
 887  * the high 1 byte is the beacon counts
 888  * the lower 3 bytes is the time in usec within one beacon interval
 889  */
 890
 891 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 892 {
 893         u32 quot;
 894         u32 rem;
 895         u32 interval = beacon_interval * 1024;
 896
 897         if (!interval || !usec)
 898                 return 0;
 899
 900         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 901         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 902
 903         return (quot << 24) + rem;
 904 }
 905
 906 /* base is usually what we get from ucode with each received frame,
 907  * the same as HW timer counter counting down
 908  */
 909
 910 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 911 {
 912         u32 base_low = base & BEACON_TIME_MASK_LOW;
 913         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 914         u32 interval = beacon_interval * TIME_UNIT;
 915         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 916             (addon & BEACON_TIME_MASK_HIGH);
 917
 918         if (base_low > addon_low)
 919                 res += base_low - addon_low;
 920         else if (base_low < addon_low) {
 921                 res += interval + base_low - addon_low;
 922                 res += (1 << 24);
 923         } else
 924                 res += (1 << 24);
 925
 926         return cpu_to_le32(res);
 927 }
 928
 929 static int iwl4965_get_measurement(struct iwl_priv *priv,
 930                                struct ieee80211_measurement_params *params,
 931                                u8 type)
 932 {
 933         struct iwl4965_spectrum_cmd spectrum;
 934         struct iwl_rx_packet *res;
 935         struct iwl_host_cmd cmd = {
 936                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 937                 .data = (void *)&spectrum,
 938                 .meta.flags = CMD_WANT_SKB,
 939         };
 940         u32 add_time = le64_to_cpu(params->start_time);
 941         int rc;
 942         int spectrum_resp_status;
 943         int duration = le16_to_cpu(params->duration);
 944
 945         if (iwl_is_associated(priv))
 946                 add_time =
 947                     iwl4965_usecs_to_beacons(
 948                         le64_to_cpu(params->start_time) - priv->last_tsf,
 949                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 950
 951         memset(&spectrum, 0, sizeof(spectrum));
 952
 953         spectrum.channel_count = cpu_to_le16(1);
 954         spectrum.flags =
 955             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 956         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 957         cmd.len = sizeof(spectrum);
 958         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 959
 960         if (iwl_is_associated(priv))
 961                 spectrum.start_time =
 962                     iwl4965_add_beacon_time(priv->last_beacon_time,
 963                                 add_time,
 964                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 965         else
 966                 spectrum.start_time = 0;
 967
 968         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 969         spectrum.channels[0].channel = params->channel;
 970         spectrum.channels[0].type = type;
 971         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 972                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 973                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 974
 975         rc = iwl_send_cmd_sync(priv, &cmd);
 976         if (rc)
 977                 return rc;
 978
 979         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 980         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 981                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 982                 rc = -EIO;
 983         }
 984
 985         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 986         switch (spectrum_resp_status) {
 987         case 0:         /* Command will be handled */
 988                 if (res->u.spectrum.id != 0xff) {
 989                         IWL_DEBUG_INFO
 990                             ("Replaced existing measurement: %d\n",
 991                              res->u.spectrum.id);
 992                         priv->measurement_status &= ~MEASUREMENT_READY;
 993                 }
 994                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 995                 rc = 0;
 996                 break;
 997
 998         case 1:         /* Command will not be handled */
 999                 rc = -EAGAIN;
1000                 break;
1001         }
1002
1003         dev_kfree_skb_any(cmd.meta.u.skb);
1004
1005         return rc;
1006 }
1007 #endif
1008
1009 /******************************************************************************
1010  *
1011  * Generic RX handler implementations
1012  *
1013  ******************************************************************************/
1014 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1015                                 struct iwl_rx_mem_buffer *rxb)
1016 {
1017         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1018         struct iwl_alive_resp *palive;
1019         struct delayed_work *pwork;
1020
1021         palive = &pkt->u.alive_frame;
1022
1023         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1024                        "0x%01X 0x%01X\n",
1025                        palive->is_valid, palive->ver_type,
1026                        palive->ver_subtype);
1027
1028         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1029                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1030                 memcpy(&priv->card_alive_init,
1031                        &pkt->u.alive_frame,
1032                        sizeof(struct iwl_init_alive_resp));
1033                 pwork = &priv->init_alive_start;
1034         } else {
1035                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1036                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1037                        sizeof(struct iwl_alive_resp));
1038                 pwork = &priv->alive_start;
1039         }
1040
1041         /* We delay the ALIVE response by 5ms to
1042          * give the HW RF Kill time to activate... */
1043         if (palive->is_valid == UCODE_VALID_OK)
1044                 queue_delayed_work(priv->workqueue, pwork,
1045                                    msecs_to_jiffies(5));
1046         else
1047                 IWL_WARNING("uCode did not respond OK.\n");
1048 }
1049
1050 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1051                                    struct iwl_rx_mem_buffer *rxb)
1052 {
1053         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1054
1055         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1056                 "seq 0x%04X ser 0x%08X\n",
1057                 le32_to_cpu(pkt->u.err_resp.error_type),
1058                 get_cmd_string(pkt->u.err_resp.cmd_id),
1059                 pkt->u.err_resp.cmd_id,
1060                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1061                 le32_to_cpu(pkt->u.err_resp.error_info));
1062 }
1063
1064 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1065
1066 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1067 {
1068         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1069         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1070         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1071         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1072                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1073         rxon->channel = csa->channel;
1074         priv->staging_rxon.channel = csa->channel;
1075 }
1076
1077 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1078                                           struct iwl_rx_mem_buffer *rxb)
1079 {
1080 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1081         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1082         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1083
1084         if (!report->state) {
1085                 IWL_DEBUG(IWL_DL_11H,
1086                         "Spectrum Measure Notification: Start\n");
1087                 return;
1088         }
1089
1090         memcpy(&priv->measure_report, report, sizeof(*report));
1091         priv->measurement_status |= MEASUREMENT_READY;
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1096                                       struct iwl_rx_mem_buffer *rxb)
1097 {
1098 #ifdef CONFIG_IWLWIFI_DEBUG
1099         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1100         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1101         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1102                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1103 #endif
1104 }
1105
1106 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1107                                              struct iwl_rx_mem_buffer *rxb)
1108 {
1109         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1110         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1111                         "notification for %s:\n",
1112                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1113         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1114 }
1115
1116 static void iwl4965_bg_beacon_update(struct work_struct *work)
1117 {
1118         struct iwl_priv *priv =
1119                 container_of(work, struct iwl_priv, beacon_update);
1120         struct sk_buff *beacon;
1121
1122         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1123         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1124
1125         if (!beacon) {
1126                 IWL_ERROR("update beacon failed\n");
1127                 return;
1128         }
1129
1130         mutex_lock(&priv->mutex);
1131         /* new beacon skb is allocated every time; dispose previous.*/
1132         if (priv->ibss_beacon)
1133                 dev_kfree_skb(priv->ibss_beacon);
1134
1135         priv->ibss_beacon = beacon;
1136         mutex_unlock(&priv->mutex);
1137
1138         iwl4965_send_beacon_cmd(priv);
1139 }
1140
1141 /**
1142  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1143  *
1144  * This callback is provided in order to send a statistics request.
1145  *
1146  * This timer function is continually reset to execute within
1147  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1148  * was received.  We need to ensure we receive the statistics in order
1149  * to update the temperature used for calibrating the TXPOWER.
1150  */
1151 static void iwl4965_bg_statistics_periodic(unsigned long data)
1152 {
1153         struct iwl_priv *priv = (struct iwl_priv *)data;
1154
1155         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1156                 return;
1157
1158         iwl_send_statistics_request(priv, CMD_ASYNC);
1159 }
1160
1161 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1162                                 struct iwl_rx_mem_buffer *rxb)
1163 {
1164 #ifdef CONFIG_IWLWIFI_DEBUG
1165         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1166         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1167         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1168
1169         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1170                 "tsf %d %d rate %d\n",
1171                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1172                 beacon->beacon_notify_hdr.failure_frame,
1173                 le32_to_cpu(beacon->ibss_mgr_status),
1174                 le32_to_cpu(beacon->high_tsf),
1175                 le32_to_cpu(beacon->low_tsf), rate);
1176 #endif
1177
1178         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1179             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1180                 queue_work(priv->workqueue, &priv->beacon_update);
1181 }
1182
1183 /* Handle notification from uCode that card's power state is changing
1184  * due to software, hardware, or critical temperature RFKILL */
1185 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1186                                     struct iwl_rx_mem_buffer *rxb)
1187 {
1188         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1189         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1190         unsigned long status = priv->status;
1191
1192         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1193                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1194                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1195
1196         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1197                      RF_CARD_DISABLED)) {
1198
1199                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1200                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1201
1202                 if (!iwl_grab_nic_access(priv)) {
1203                         iwl_write_direct32(
1204                                 priv, HBUS_TARG_MBX_C,
1205                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207                         iwl_release_nic_access(priv);
1208                 }
1209
1210                 if (!(flags & RXON_CARD_DISABLED)) {
1211                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1212                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1213                         if (!iwl_grab_nic_access(priv)) {
1214                                 iwl_write_direct32(
1215                                         priv, HBUS_TARG_MBX_C,
1216                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1217
1218                                 iwl_release_nic_access(priv);
1219                         }
1220                 }
1221
1222                 if (flags & RF_CARD_DISABLED) {
1223                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1224                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1225                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1226                         if (!iwl_grab_nic_access(priv))
1227                                 iwl_release_nic_access(priv);
1228                 }
1229         }
1230
1231         if (flags & HW_CARD_DISABLED)
1232                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1233         else
1234                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1235
1236
1237         if (flags & SW_CARD_DISABLED)
1238                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1239         else
1240                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1241
1242         if (!(flags & RXON_CARD_DISABLED))
1243                 iwl_scan_cancel(priv);
1244
1245         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1246              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1247             (test_bit(STATUS_RF_KILL_SW, &status) !=
1248              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1249                 queue_work(priv->workqueue, &priv->rf_kill);
1250         else
1251                 wake_up_interruptible(&priv->wait_command_queue);
1252 }
1253
1254 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1255 {
1256         int ret;
1257         unsigned long flags;
1258
1259         spin_lock_irqsave(&priv->lock, flags);
1260         ret = iwl_grab_nic_access(priv);
1261         if (ret)
1262                 goto err;
1263
1264         if (src == IWL_PWR_SRC_VAUX) {
1265                 u32 val;
1266                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1267                                             &val);
1268
1269                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1270                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1271                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1272                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1273         } else {
1274                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1275                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1276                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1277         }
1278
1279         iwl_release_nic_access(priv);
1280 err:
1281         spin_unlock_irqrestore(&priv->lock, flags);
1282         return ret;
1283 }
1284
1285 /**
1286  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1287  *
1288  * Setup the RX handlers for each of the reply types sent from the uCode
1289  * to the host.
1290  *
1291  * This function chains into the hardware specific files for them to setup
1292  * any hardware specific handlers as well.
1293  */
1294 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1295 {
1296         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1297         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1298         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1299         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1300             iwl4965_rx_spectrum_measure_notif;
1301         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1302         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1303             iwl4965_rx_pm_debug_statistics_notif;
1304         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1305
1306         /*
1307          * The same handler is used for both the REPLY to a discrete
1308          * statistics request from the host as well as for the periodic
1309          * statistics notifications (after received beacons) from the uCode.
1310          */
1311         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1312         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1313
1314         iwl_setup_rx_scan_handlers(priv);
1315
1316         /* status change handler */
1317         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1318
1319         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1320             iwl_rx_missed_beacon_notif;
1321         /* Rx handlers */
1322         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1323         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1324         /* block ack */
1325         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1326         /* Set up hardware specific Rx handlers */
1327         priv->cfg->ops->lib->rx_handler_setup(priv);
1328 }
1329
1330 /*
1331  * this should be called while priv->lock is locked
1332 */
1333 static void __iwl_rx_replenish(struct iwl_priv *priv)
1334 {
1335         iwl_rx_allocate(priv);
1336         iwl_rx_queue_restock(priv);
1337 }
1338
1339
1340 /**
1341  * iwl_rx_handle - Main entry function for receiving responses from uCode
1342  *
1343  * Uses the priv->rx_handlers callback function array to invoke
1344  * the appropriate handlers, including command responses,
1345  * frame-received notifications, and other notifications.
1346  */
1347 void iwl_rx_handle(struct iwl_priv *priv)
1348 {
1349         struct iwl_rx_mem_buffer *rxb;
1350         struct iwl_rx_packet *pkt;
1351         struct iwl_rx_queue *rxq = &priv->rxq;
1352         u32 r, i;
1353         int reclaim;
1354         unsigned long flags;
1355         u8 fill_rx = 0;
1356         u32 count = 8;
1357
1358         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1359          * buffer that the driver may process (last buffer filled by ucode). */
1360         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1361         i = rxq->read;
1362
1363         /* Rx interrupt, but nothing sent from uCode */
1364         if (i == r)
1365                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1366
1367         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1368                 fill_rx = 1;
1369
1370         while (i != r) {
1371                 rxb = rxq->queue[i];
1372
1373                 /* If an RXB doesn't have a Rx queue slot associated with it,
1374                  * then a bug has been introduced in the queue refilling
1375                  * routines -- catch it here */
1376                 BUG_ON(rxb == NULL);
1377
1378                 rxq->queue[i] = NULL;
1379
1380                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1381                                             priv->hw_params.rx_buf_size,
1382                                             PCI_DMA_FROMDEVICE);
1383                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1384
1385                 /* Reclaim a command buffer only if this packet is a response
1386                  *   to a (driver-originated) command.
1387                  * If the packet (e.g. Rx frame) originated from uCode,
1388                  *   there is no command buffer to reclaim.
1389                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1390                  *   but apparently a few don't get set; catch them here. */
1391                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1392                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1393                         (pkt->hdr.cmd != REPLY_RX) &&
1394                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1395                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1396                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1397                         (pkt->hdr.cmd != REPLY_TX);
1398
1399                 /* Based on type of command response or notification,
1400                  *   handle those that need handling via function in
1401                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1402                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1403                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1404                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1405                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1406                 } else {
1407                         /* No handling needed */
1408                         IWL_DEBUG(IWL_DL_RX,
1409                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1410                                 r, i, get_cmd_string(pkt->hdr.cmd),
1411                                 pkt->hdr.cmd);
1412                 }
1413
1414                 if (reclaim) {
1415                         /* Invoke any callbacks, transfer the skb to caller, and
1416                          * fire off the (possibly) blocking iwl_send_cmd()
1417                          * as we reclaim the driver command queue */
1418                         if (rxb && rxb->skb)
1419                                 iwl_tx_cmd_complete(priv, rxb);
1420                         else
1421                                 IWL_WARNING("Claim null rxb?\n");
1422                 }
1423
1424                 /* For now we just don't re-use anything.  We can tweak this
1425                  * later to try and re-use notification packets and SKBs that
1426                  * fail to Rx correctly */
1427                 if (rxb->skb != NULL) {
1428                         priv->alloc_rxb_skb--;
1429                         dev_kfree_skb_any(rxb->skb);
1430                         rxb->skb = NULL;
1431                 }
1432
1433                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1434                                  priv->hw_params.rx_buf_size,
1435                                  PCI_DMA_FROMDEVICE);
1436                 spin_lock_irqsave(&rxq->lock, flags);
1437                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1438                 spin_unlock_irqrestore(&rxq->lock, flags);
1439                 i = (i + 1) & RX_QUEUE_MASK;
1440                 /* If there are a lot of unused frames,
1441                  * restock the Rx queue so ucode wont assert. */
1442                 if (fill_rx) {
1443                         count++;
1444                         if (count >= 8) {
1445                                 priv->rxq.read = i;
1446                                 __iwl_rx_replenish(priv);
1447                                 count = 0;
1448                         }
1449                 }
1450         }
1451
1452         /* Backtrack one entry */
1453         priv->rxq.read = i;
1454         iwl_rx_queue_restock(priv);
1455 }
1456
1457 #ifdef CONFIG_IWLWIFI_DEBUG
1458 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1459 {
1460         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1461
1462         IWL_DEBUG_RADIO("RX CONFIG:\n");
1463         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1464         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1465         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1466         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1467                         le32_to_cpu(rxon->filter_flags));
1468         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1469         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1470                         rxon->ofdm_basic_rates);
1471         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1472         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1473         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1474         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1475 }
1476 #endif
1477
1478 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1479 {
1480         IWL_DEBUG_ISR("Enabling interrupts\n");
1481         set_bit(STATUS_INT_ENABLED, &priv->status);
1482         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1483 }
1484
1485 /* call this function to flush any scheduled tasklet */
1486 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1487 {
1488         /* wait to make sure we flush pending tasklet*/
1489         synchronize_irq(priv->pci_dev->irq);
1490         tasklet_kill(&priv->irq_tasklet);
1491 }
1492
1493 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1494 {
1495         clear_bit(STATUS_INT_ENABLED, &priv->status);
1496
1497         /* disable interrupts from uCode/NIC to host */
1498         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1499
1500         /* acknowledge/clear/reset any interrupts still pending
1501          * from uCode or flow handler (Rx/Tx DMA) */
1502         iwl_write32(priv, CSR_INT, 0xffffffff);
1503         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1504         IWL_DEBUG_ISR("Disabled interrupts\n");
1505 }
1506
1507
1508 /**
1509  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1510  */
1511 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1512 {
1513         /* Set the FW error flag -- cleared on iwl4965_down */
1514         set_bit(STATUS_FW_ERROR, &priv->status);
1515
1516         /* Cancel currently queued command. */
1517         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1518
1519 #ifdef CONFIG_IWLWIFI_DEBUG
1520         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1521                 iwl_dump_nic_error_log(priv);
1522                 iwl_dump_nic_event_log(priv);
1523                 iwl4965_print_rx_config_cmd(priv);
1524         }
1525 #endif
1526
1527         wake_up_interruptible(&priv->wait_command_queue);
1528
1529         /* Keep the restart process from trying to send host
1530          * commands by clearing the INIT status bit */
1531         clear_bit(STATUS_READY, &priv->status);
1532
1533         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1534                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1535                           "Restarting adapter due to uCode error.\n");
1536
1537                 if (iwl_is_associated(priv)) {
1538                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1539                                sizeof(priv->recovery_rxon));
1540                         priv->error_recovering = 1;
1541                 }
1542                 if (priv->cfg->mod_params->restart_fw)
1543                         queue_work(priv->workqueue, &priv->restart);
1544         }
1545 }
1546
1547 static void iwl4965_error_recovery(struct iwl_priv *priv)
1548 {
1549         unsigned long flags;
1550
1551         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1552                sizeof(priv->staging_rxon));
1553         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1554         iwl4965_commit_rxon(priv);
1555
1556         iwl_rxon_add_station(priv, priv->bssid, 1);
1557
1558         spin_lock_irqsave(&priv->lock, flags);
1559         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1560         priv->error_recovering = 0;
1561         spin_unlock_irqrestore(&priv->lock, flags);
1562 }
1563
1564 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1565 {
1566         u32 inta, handled = 0;
1567         u32 inta_fh;
1568         unsigned long flags;
1569 #ifdef CONFIG_IWLWIFI_DEBUG
1570         u32 inta_mask;
1571 #endif
1572
1573         spin_lock_irqsave(&priv->lock, flags);
1574
1575         /* Ack/clear/reset pending uCode interrupts.
1576          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1577          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1578         inta = iwl_read32(priv, CSR_INT);
1579         iwl_write32(priv, CSR_INT, inta);
1580
1581         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1582          * Any new interrupts that happen after this, either while we're
1583          * in this tasklet, or later, will show up in next ISR/tasklet. */
1584         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1585         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1586
1587 #ifdef CONFIG_IWLWIFI_DEBUG
1588         if (priv->debug_level & IWL_DL_ISR) {
1589                 /* just for debug */
1590                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1591                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1592                               inta, inta_mask, inta_fh);
1593         }
1594 #endif
1595
1596         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1597          * atomic, make sure that inta covers all the interrupts that
1598          * we've discovered, even if FH interrupt came in just after
1599          * reading CSR_INT. */
1600         if (inta_fh & CSR49_FH_INT_RX_MASK)
1601                 inta |= CSR_INT_BIT_FH_RX;
1602         if (inta_fh & CSR49_FH_INT_TX_MASK)
1603                 inta |= CSR_INT_BIT_FH_TX;
1604
1605         /* Now service all interrupt bits discovered above. */
1606         if (inta & CSR_INT_BIT_HW_ERR) {
1607                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1608
1609                 /* Tell the device to stop sending interrupts */
1610                 iwl4965_disable_interrupts(priv);
1611
1612                 iwl4965_irq_handle_error(priv);
1613
1614                 handled |= CSR_INT_BIT_HW_ERR;
1615
1616                 spin_unlock_irqrestore(&priv->lock, flags);
1617
1618                 return;
1619         }
1620
1621 #ifdef CONFIG_IWLWIFI_DEBUG
1622         if (priv->debug_level & (IWL_DL_ISR)) {
1623                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1624                 if (inta & CSR_INT_BIT_SCD)
1625                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1626                                       "the frame/frames.\n");
1627
1628                 /* Alive notification via Rx interrupt will do the real work */
1629                 if (inta & CSR_INT_BIT_ALIVE)
1630                         IWL_DEBUG_ISR("Alive interrupt\n");
1631         }
1632 #endif
1633         /* Safely ignore these bits for debug checks below */
1634         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1635
1636         /* HW RF KILL switch toggled */
1637         if (inta & CSR_INT_BIT_RF_KILL) {
1638                 int hw_rf_kill = 0;
1639                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1640                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1641                         hw_rf_kill = 1;
1642
1643                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1644                                 hw_rf_kill ? "disable radio":"enable radio");
1645
1646                 /* driver only loads ucode once setting the interface up.
1647                  * the driver as well won't allow loading if RFKILL is set
1648                  * therefore no need to restart the driver from this handler
1649                  */
1650                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1651                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1652
1653                 handled |= CSR_INT_BIT_RF_KILL;
1654         }
1655
1656         /* Chip got too hot and stopped itself */
1657         if (inta & CSR_INT_BIT_CT_KILL) {
1658                 IWL_ERROR("Microcode CT kill error detected.\n");
1659                 handled |= CSR_INT_BIT_CT_KILL;
1660         }
1661
1662         /* Error detected by uCode */
1663         if (inta & CSR_INT_BIT_SW_ERR) {
1664                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1665                           inta);
1666                 iwl4965_irq_handle_error(priv);
1667                 handled |= CSR_INT_BIT_SW_ERR;
1668         }
1669
1670         /* uCode wakes up after power-down sleep */
1671         if (inta & CSR_INT_BIT_WAKEUP) {
1672                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1673                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1674                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1675                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1676                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1677                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1678                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1679                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1680
1681                 handled |= CSR_INT_BIT_WAKEUP;
1682         }
1683
1684         /* All uCode command responses, including Tx command responses,
1685          * Rx "responses" (frame-received notification), and other
1686          * notifications from uCode come through here*/
1687         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1688                 iwl_rx_handle(priv);
1689                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1690         }
1691
1692         if (inta & CSR_INT_BIT_FH_TX) {
1693                 IWL_DEBUG_ISR("Tx interrupt\n");
1694                 handled |= CSR_INT_BIT_FH_TX;
1695                 /* FH finished to write, send event */
1696                 priv->ucode_write_complete = 1;
1697                 wake_up_interruptible(&priv->wait_command_queue);
1698         }
1699
1700         if (inta & ~handled)
1701                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1702
1703         if (inta & ~CSR_INI_SET_MASK) {
1704                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1705                          inta & ~CSR_INI_SET_MASK);
1706                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1707         }
1708
1709         /* Re-enable all interrupts */
1710         /* only Re-enable if diabled by irq */
1711         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1712                 iwl4965_enable_interrupts(priv);
1713
1714 #ifdef CONFIG_IWLWIFI_DEBUG
1715         if (priv->debug_level & (IWL_DL_ISR)) {
1716                 inta = iwl_read32(priv, CSR_INT);
1717                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1718                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1719                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1720                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1721         }
1722 #endif
1723         spin_unlock_irqrestore(&priv->lock, flags);
1724 }
1725
1726 static irqreturn_t iwl4965_isr(int irq, void *data)
1727 {
1728         struct iwl_priv *priv = data;
1729         u32 inta, inta_mask;
1730         u32 inta_fh;
1731         if (!priv)
1732                 return IRQ_NONE;
1733
1734         spin_lock(&priv->lock);
1735
1736         /* Disable (but don't clear!) interrupts here to avoid
1737          *    back-to-back ISRs and sporadic interrupts from our NIC.
1738          * If we have something to service, the tasklet will re-enable ints.
1739          * If we *don't* have something, we'll re-enable before leaving here. */
1740         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1741         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1742
1743         /* Discover which interrupts are active/pending */
1744         inta = iwl_read32(priv, CSR_INT);
1745         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1746
1747         /* Ignore interrupt if there's nothing in NIC to service.
1748          * This may be due to IRQ shared with another device,
1749          * or due to sporadic interrupts thrown from our NIC. */
1750         if (!inta && !inta_fh) {
1751                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1752                 goto none;
1753         }
1754
1755         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1756                 /* Hardware disappeared. It might have already raised
1757                  * an interrupt */
1758                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1759                 goto unplugged;
1760         }
1761
1762         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1763                       inta, inta_mask, inta_fh);
1764
1765         inta &= ~CSR_INT_BIT_SCD;
1766
1767         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1768         if (likely(inta || inta_fh))
1769                 tasklet_schedule(&priv->irq_tasklet);
1770
1771  unplugged:
1772         spin_unlock(&priv->lock);
1773         return IRQ_HANDLED;
1774
1775  none:
1776         /* re-enable interrupts here since we don't have anything to service. */
1777         /* only Re-enable if diabled by irq */
1778         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1779                 iwl4965_enable_interrupts(priv);
1780         spin_unlock(&priv->lock);
1781         return IRQ_NONE;
1782 }
1783
1784 /******************************************************************************
1785  *
1786  * uCode download functions
1787  *
1788  ******************************************************************************/
1789
1790 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1791 {
1792         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1793         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1794         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1795         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1796         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1797         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1798 }
1799
1800 static void iwl4965_nic_start(struct iwl_priv *priv)
1801 {
1802         /* Remove all resets to allow NIC to operate */
1803         iwl_write32(priv, CSR_RESET, 0);
1804 }
1805
1806
1807 /**
1808  * iwl4965_read_ucode - Read uCode images from disk file.
1809  *
1810  * Copy into buffers for card to fetch via bus-mastering
1811  */
1812 static int iwl4965_read_ucode(struct iwl_priv *priv)
1813 {
1814         struct iwl_ucode *ucode;
1815         int ret;
1816         const struct firmware *ucode_raw;
1817         const char *name = priv->cfg->fw_name;
1818         u8 *src;
1819         size_t len;
1820         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1821
1822         /* Ask kernel firmware_class module to get the boot firmware off disk.
1823          * request_firmware() is synchronous, file is in memory on return. */
1824         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1825         if (ret < 0) {
1826                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1827                                         name, ret);
1828                 goto error;
1829         }
1830
1831         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1832                        name, ucode_raw->size);
1833
1834         /* Make sure that we got at least our header! */
1835         if (ucode_raw->size < sizeof(*ucode)) {
1836                 IWL_ERROR("File size way too small!\n");
1837                 ret = -EINVAL;
1838                 goto err_release;
1839         }
1840
1841         /* Data from ucode file:  header followed by uCode images */
1842         ucode = (void *)ucode_raw->data;
1843
1844         ver = le32_to_cpu(ucode->ver);
1845         inst_size = le32_to_cpu(ucode->inst_size);
1846         data_size = le32_to_cpu(ucode->data_size);
1847         init_size = le32_to_cpu(ucode->init_size);
1848         init_data_size = le32_to_cpu(ucode->init_data_size);
1849         boot_size = le32_to_cpu(ucode->boot_size);
1850
1851         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1852         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1853                        inst_size);
1854         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1855                        data_size);
1856         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1857                        init_size);
1858         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1859                        init_data_size);
1860         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1861                        boot_size);
1862
1863         /* Verify size of file vs. image size info in file's header */
1864         if (ucode_raw->size < sizeof(*ucode) +
1865                 inst_size + data_size + init_size +
1866                 init_data_size + boot_size) {
1867
1868                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1869                                (int)ucode_raw->size);
1870                 ret = -EINVAL;
1871                 goto err_release;
1872         }
1873
1874         /* Verify that uCode images will fit in card's SRAM */
1875         if (inst_size > priv->hw_params.max_inst_size) {
1876                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1877                                inst_size);
1878                 ret = -EINVAL;
1879                 goto err_release;
1880         }
1881
1882         if (data_size > priv->hw_params.max_data_size) {
1883                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1884                                 data_size);
1885                 ret = -EINVAL;
1886                 goto err_release;
1887         }
1888         if (init_size > priv->hw_params.max_inst_size) {
1889                 IWL_DEBUG_INFO
1890                     ("uCode init instr len %d too large to fit in\n",
1891                       init_size);
1892                 ret = -EINVAL;
1893                 goto err_release;
1894         }
1895         if (init_data_size > priv->hw_params.max_data_size) {
1896                 IWL_DEBUG_INFO
1897                     ("uCode init data len %d too large to fit in\n",
1898                       init_data_size);
1899                 ret = -EINVAL;
1900                 goto err_release;
1901         }
1902         if (boot_size > priv->hw_params.max_bsm_size) {
1903                 IWL_DEBUG_INFO
1904                     ("uCode boot instr len %d too large to fit in\n",
1905                       boot_size);
1906                 ret = -EINVAL;
1907                 goto err_release;
1908         }
1909
1910         /* Allocate ucode buffers for card's bus-master loading ... */
1911
1912         /* Runtime instructions and 2 copies of data:
1913          * 1) unmodified from disk
1914          * 2) backup cache for save/restore during power-downs */
1915         priv->ucode_code.len = inst_size;
1916         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1917
1918         priv->ucode_data.len = data_size;
1919         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1920
1921         priv->ucode_data_backup.len = data_size;
1922         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1923
1924         /* Initialization instructions and data */
1925         if (init_size && init_data_size) {
1926                 priv->ucode_init.len = init_size;
1927                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1928
1929                 priv->ucode_init_data.len = init_data_size;
1930                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1931
1932                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1933                         goto err_pci_alloc;
1934         }
1935
1936         /* Bootstrap (instructions only, no data) */
1937         if (boot_size) {
1938                 priv->ucode_boot.len = boot_size;
1939                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1940
1941                 if (!priv->ucode_boot.v_addr)
1942                         goto err_pci_alloc;
1943         }
1944
1945         /* Copy images into buffers for card's bus-master reads ... */
1946
1947         /* Runtime instructions (first block of data in file) */
1948         src = &ucode->data[0];
1949         len = priv->ucode_code.len;
1950         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1951         memcpy(priv->ucode_code.v_addr, src, len);
1952         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1953                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1954
1955         /* Runtime data (2nd block)
1956          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1957         src = &ucode->data[inst_size];
1958         len = priv->ucode_data.len;
1959         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1960         memcpy(priv->ucode_data.v_addr, src, len);
1961         memcpy(priv->ucode_data_backup.v_addr, src, len);
1962
1963         /* Initialization instructions (3rd block) */
1964         if (init_size) {
1965                 src = &ucode->data[inst_size + data_size];
1966                 len = priv->ucode_init.len;
1967                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1968                                 len);
1969                 memcpy(priv->ucode_init.v_addr, src, len);
1970         }
1971
1972         /* Initialization data (4th block) */
1973         if (init_data_size) {
1974                 src = &ucode->data[inst_size + data_size + init_size];
1975                 len = priv->ucode_init_data.len;
1976                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1977                                len);
1978                 memcpy(priv->ucode_init_data.v_addr, src, len);
1979         }
1980
1981         /* Bootstrap instructions (5th block) */
1982         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1983         len = priv->ucode_boot.len;
1984         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1985         memcpy(priv->ucode_boot.v_addr, src, len);
1986
1987         /* We have our copies now, allow OS release its copies */
1988         release_firmware(ucode_raw);
1989         return 0;
1990
1991  err_pci_alloc:
1992         IWL_ERROR("failed to allocate pci memory\n");
1993         ret = -ENOMEM;
1994         iwl4965_dealloc_ucode_pci(priv);
1995
1996  err_release:
1997         release_firmware(ucode_raw);
1998
1999  error:
2000         return ret;
2001 }
2002
2003 /**
2004  * iwl_alive_start - called after REPLY_ALIVE notification received
2005  *                   from protocol/runtime uCode (initialization uCode's
2006  *                   Alive gets handled by iwl_init_alive_start()).
2007  */
2008 static void iwl_alive_start(struct iwl_priv *priv)
2009 {
2010         int ret = 0;
2011
2012         IWL_DEBUG_INFO("Runtime Alive received.\n");
2013
2014         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2015                 /* We had an error bringing up the hardware, so take it
2016                  * all the way back down so we can try again */
2017                 IWL_DEBUG_INFO("Alive failed.\n");
2018                 goto restart;
2019         }
2020
2021         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2022          * This is a paranoid check, because we would not have gotten the
2023          * "runtime" alive if code weren't properly loaded.  */
2024         if (iwl_verify_ucode(priv)) {
2025                 /* Runtime instruction load was bad;
2026                  * take it all the way back down so we can try again */
2027                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2028                 goto restart;
2029         }
2030
2031         iwl_clear_stations_table(priv);
2032         ret = priv->cfg->ops->lib->alive_notify(priv);
2033         if (ret) {
2034                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2035                             ret);
2036                 goto restart;
2037         }
2038
2039         /* After the ALIVE response, we can send host commands to 4965 uCode */
2040         set_bit(STATUS_ALIVE, &priv->status);
2041
2042         if (iwl_is_rfkill(priv))
2043                 return;
2044
2045         ieee80211_wake_queues(priv->hw);
2046
2047         priv->active_rate = priv->rates_mask;
2048         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2049
2050         if (iwl_is_associated(priv)) {
2051                 struct iwl_rxon_cmd *active_rxon =
2052                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2053
2054                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2055                        sizeof(priv->staging_rxon));
2056                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2057         } else {
2058                 /* Initialize our rx_config data */
2059                 iwl4965_connection_init_rx_config(priv);
2060                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2061         }
2062
2063         /* Configure Bluetooth device coexistence support */
2064         iwl4965_send_bt_config(priv);
2065
2066         iwl_reset_run_time_calib(priv);
2067
2068         /* Configure the adapter for unassociated operation */
2069         iwl4965_commit_rxon(priv);
2070
2071         /* At this point, the NIC is initialized and operational */
2072         iwl_rf_kill_ct_config(priv);
2073
2074         iwl_leds_register(priv);
2075
2076         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2077         set_bit(STATUS_READY, &priv->status);
2078         wake_up_interruptible(&priv->wait_command_queue);
2079
2080         if (priv->error_recovering)
2081                 iwl4965_error_recovery(priv);
2082
2083         iwl_power_update_mode(priv, 1);
2084
2085         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2086                 iwl4965_set_mode(priv, priv->iw_mode);
2087
2088         return;
2089
2090  restart:
2091         queue_work(priv->workqueue, &priv->restart);
2092 }
2093
2094 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2095
2096 static void __iwl4965_down(struct iwl_priv *priv)
2097 {
2098         unsigned long flags;
2099         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2100
2101         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2102
2103         if (!exit_pending)
2104                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2105
2106         iwl_leds_unregister(priv);
2107
2108         iwl_clear_stations_table(priv);
2109
2110         /* Unblock any waiting calls */
2111         wake_up_interruptible_all(&priv->wait_command_queue);
2112
2113         /* Wipe out the EXIT_PENDING status bit if we are not actually
2114          * exiting the module */
2115         if (!exit_pending)
2116                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2117
2118         /* stop and reset the on-board processor */
2119         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2120
2121         /* tell the device to stop sending interrupts */
2122         spin_lock_irqsave(&priv->lock, flags);
2123         iwl4965_disable_interrupts(priv);
2124         spin_unlock_irqrestore(&priv->lock, flags);
2125         iwl_synchronize_irq(priv);
2126
2127         if (priv->mac80211_registered)
2128                 ieee80211_stop_queues(priv->hw);
2129
2130         /* If we have not previously called iwl4965_init() then
2131          * clear all bits but the RF Kill and SUSPEND bits and return */
2132         if (!iwl_is_init(priv)) {
2133                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2134                                         STATUS_RF_KILL_HW |
2135                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2136                                         STATUS_RF_KILL_SW |
2137                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2138                                         STATUS_GEO_CONFIGURED |
2139                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2140                                         STATUS_IN_SUSPEND |
2141                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2142                                         STATUS_EXIT_PENDING;
2143                 goto exit;
2144         }
2145
2146         /* ...otherwise clear out all the status bits but the RF Kill and
2147          * SUSPEND bits and continue taking the NIC down. */
2148         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2149                                 STATUS_RF_KILL_HW |
2150                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2151                                 STATUS_RF_KILL_SW |
2152                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2153                                 STATUS_GEO_CONFIGURED |
2154                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2155                                 STATUS_IN_SUSPEND |
2156                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2157                                 STATUS_FW_ERROR |
2158                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2159                                 STATUS_EXIT_PENDING;
2160
2161         spin_lock_irqsave(&priv->lock, flags);
2162         iwl_clear_bit(priv, CSR_GP_CNTRL,
2163                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2164         spin_unlock_irqrestore(&priv->lock, flags);
2165
2166         iwl_txq_ctx_stop(priv);
2167         iwl_rxq_stop(priv);
2168
2169         spin_lock_irqsave(&priv->lock, flags);
2170         if (!iwl_grab_nic_access(priv)) {
2171                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2172                                          APMG_CLK_VAL_DMA_CLK_RQT);
2173                 iwl_release_nic_access(priv);
2174         }
2175         spin_unlock_irqrestore(&priv->lock, flags);
2176
2177         udelay(5);
2178
2179         /* FIXME: apm_ops.suspend(priv) */
2180         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2181                 priv->cfg->ops->lib->apm_ops.stop(priv);
2182         else
2183                 priv->cfg->ops->lib->apm_ops.reset(priv);
2184         priv->cfg->ops->lib->free_shared_mem(priv);
2185
2186  exit:
2187         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2188
2189         if (priv->ibss_beacon)
2190                 dev_kfree_skb(priv->ibss_beacon);
2191         priv->ibss_beacon = NULL;
2192
2193         /* clear out any free frames */
2194         iwl_clear_free_frames(priv);
2195 }
2196
2197 static void iwl4965_down(struct iwl_priv *priv)
2198 {
2199         mutex_lock(&priv->mutex);
2200         __iwl4965_down(priv);
2201         mutex_unlock(&priv->mutex);
2202
2203         iwl_cancel_deferred_work(priv);
2204 }
2205
2206 #define MAX_HW_RESTARTS 5
2207
2208 static int __iwl4965_up(struct iwl_priv *priv)
2209 {
2210         int i;
2211         int ret;
2212
2213         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2214                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2215                 return -EIO;
2216         }
2217
2218         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2219                 IWL_ERROR("ucode not available for device bringup\n");
2220                 return -EIO;
2221         }
2222
2223         /* If platform's RF_KILL switch is NOT set to KILL */
2224         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2225                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2226         else
2227                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2228
2229         if (iwl_is_rfkill(priv)) {
2230                 iwl4965_enable_interrupts(priv);
2231                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2232                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2233                 return 0;
2234         }
2235
2236         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2237
2238         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2239         if (ret) {
2240                 IWL_ERROR("Unable to allocate shared memory\n");
2241                 return ret;
2242         }
2243
2244         ret = iwl_hw_nic_init(priv);
2245         if (ret) {
2246                 IWL_ERROR("Unable to init nic\n");
2247                 return ret;
2248         }
2249
2250         /* make sure rfkill handshake bits are cleared */
2251         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2252         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2253                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2254
2255         /* clear (again), then enable host interrupts */
2256         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2257         iwl4965_enable_interrupts(priv);
2258
2259         /* really make sure rfkill handshake bits are cleared */
2260         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2261         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2262
2263         /* Copy original ucode data image from disk into backup cache.
2264          * This will be used to initialize the on-board processor's
2265          * data SRAM for a clean start when the runtime program first loads. */
2266         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2267                priv->ucode_data.len);
2268
2269         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2270
2271                 iwl_clear_stations_table(priv);
2272
2273                 /* load bootstrap state machine,
2274                  * load bootstrap program into processor's memory,
2275                  * prepare to load the "initialize" uCode */
2276                 ret = priv->cfg->ops->lib->load_ucode(priv);
2277
2278                 if (ret) {
2279                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2280                         continue;
2281                 }
2282
2283                 /* Clear out the uCode error bit if it is set */
2284                 clear_bit(STATUS_FW_ERROR, &priv->status);
2285
2286                 /* start card; "initialize" will load runtime ucode */
2287                 iwl4965_nic_start(priv);
2288
2289                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2290
2291                 return 0;
2292         }
2293
2294         set_bit(STATUS_EXIT_PENDING, &priv->status);
2295         __iwl4965_down(priv);
2296         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2297
2298         /* tried to restart and config the device for as long as our
2299          * patience could withstand */
2300         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2301         return -EIO;
2302 }
2303
2304
2305 /*****************************************************************************
2306  *
2307  * Workqueue callbacks
2308  *
2309  *****************************************************************************/
2310
2311 static void iwl_bg_init_alive_start(struct work_struct *data)
2312 {
2313         struct iwl_priv *priv =
2314             container_of(data, struct iwl_priv, init_alive_start.work);
2315
2316         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2317                 return;
2318
2319         mutex_lock(&priv->mutex);
2320         priv->cfg->ops->lib->init_alive_start(priv);
2321         mutex_unlock(&priv->mutex);
2322 }
2323
2324 static void iwl_bg_alive_start(struct work_struct *data)
2325 {
2326         struct iwl_priv *priv =
2327             container_of(data, struct iwl_priv, alive_start.work);
2328
2329         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2330                 return;
2331
2332         mutex_lock(&priv->mutex);
2333         iwl_alive_start(priv);
2334         mutex_unlock(&priv->mutex);
2335         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2336 }
2337
2338 static void iwl4965_bg_rf_kill(struct work_struct *work)
2339 {
2340         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2341
2342         wake_up_interruptible(&priv->wait_command_queue);
2343
2344         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2345                 return;
2346
2347         mutex_lock(&priv->mutex);
2348
2349         if (!iwl_is_rfkill(priv)) {
2350                 IWL_DEBUG(IWL_DL_RF_KILL,
2351                           "HW and/or SW RF Kill no longer active, restarting "
2352                           "device\n");
2353                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2354                         queue_work(priv->workqueue, &priv->restart);
2355         } else {
2356                 /* make sure mac80211 stop sending Tx frame */
2357                 if (priv->mac80211_registered)
2358                         ieee80211_stop_queues(priv->hw);
2359
2360                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2361                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2362                                           "disabled by SW switch\n");
2363                 else
2364                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2365                                     "Kill switch must be turned off for "
2366                                     "wireless networking to work.\n");
2367         }
2368         mutex_unlock(&priv->mutex);
2369         iwl_rfkill_set_hw_state(priv);
2370 }
2371
2372 static void iwl4965_bg_set_monitor(struct work_struct *work)
2373 {
2374         struct iwl_priv *priv = container_of(work,
2375                                 struct iwl_priv, set_monitor);
2376         int ret;
2377
2378         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2379
2380         mutex_lock(&priv->mutex);
2381
2382         ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2383
2384         if (ret) {
2385                 if (ret == -EAGAIN)
2386                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2387                 else
2388                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2389         }
2390
2391         mutex_unlock(&priv->mutex);
2392 }
2393
2394 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2395 {
2396         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2397                         run_time_calib_work);
2398
2399         mutex_lock(&priv->mutex);
2400
2401         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2402             test_bit(STATUS_SCANNING, &priv->status)) {
2403                 mutex_unlock(&priv->mutex);
2404                 return;
2405         }
2406
2407         if (priv->start_calib) {
2408                 iwl_chain_noise_calibration(priv, &priv->statistics);
2409
2410                 iwl_sensitivity_calibration(priv, &priv->statistics);
2411         }
2412
2413         mutex_unlock(&priv->mutex);
2414         return;
2415 }
2416
2417 static void iwl4965_bg_up(struct work_struct *data)
2418 {
2419         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2420
2421         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2422                 return;
2423
2424         mutex_lock(&priv->mutex);
2425         __iwl4965_up(priv);
2426         mutex_unlock(&priv->mutex);
2427         iwl_rfkill_set_hw_state(priv);
2428 }
2429
2430 static void iwl4965_bg_restart(struct work_struct *data)
2431 {
2432         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2433
2434         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2435                 return;
2436
2437         iwl4965_down(priv);
2438         queue_work(priv->workqueue, &priv->up);
2439 }
2440
2441 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2442 {
2443         struct iwl_priv *priv =
2444             container_of(data, struct iwl_priv, rx_replenish);
2445
2446         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2447                 return;
2448
2449         mutex_lock(&priv->mutex);
2450         iwl_rx_replenish(priv);
2451         mutex_unlock(&priv->mutex);
2452 }
2453
2454 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2455
2456 static void iwl4965_post_associate(struct iwl_priv *priv)
2457 {
2458         struct ieee80211_conf *conf = NULL;
2459         int ret = 0;
2460         unsigned long flags;
2461
2462         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2463                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2464                 return;
2465         }
2466
2467         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2468                         priv->assoc_id, priv->active_rxon.bssid_addr);
2469
2470
2471         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2472                 return;
2473
2474
2475         if (!priv->vif || !priv->is_open)
2476                 return;
2477
2478         iwl_power_cancel_timeout(priv);
2479         iwl_scan_cancel_timeout(priv, 200);
2480
2481         conf = ieee80211_get_hw_conf(priv->hw);
2482
2483         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2484         iwl4965_commit_rxon(priv);
2485
2486         iwl_setup_rxon_timing(priv);
2487         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2488                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2489         if (ret)
2490                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2491                             "Attempting to continue.\n");
2492
2493         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2494
2495         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2496
2497         iwl_set_rxon_chain(priv);
2498         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2499
2500         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2501                         priv->assoc_id, priv->beacon_int);
2502
2503         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2504                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2505         else
2506                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2507
2508         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2509                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2510                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2511                 else
2512                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2513
2514                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2515                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2516
2517         }
2518
2519         iwl4965_commit_rxon(priv);
2520
2521         switch (priv->iw_mode) {
2522         case NL80211_IFTYPE_STATION:
2523                 break;
2524
2525         case NL80211_IFTYPE_ADHOC:
2526
2527                 /* assume default assoc id */
2528                 priv->assoc_id = 1;
2529
2530                 iwl_rxon_add_station(priv, priv->bssid, 0);
2531                 iwl4965_send_beacon_cmd(priv);
2532
2533                 break;
2534
2535         default:
2536                 IWL_ERROR("%s Should not be called in %d mode\n",
2537                           __func__, priv->iw_mode);
2538                 break;
2539         }
2540
2541         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2542                 priv->assoc_station_added = 1;
2543
2544         spin_lock_irqsave(&priv->lock, flags);
2545         iwl_activate_qos(priv, 0);
2546         spin_unlock_irqrestore(&priv->lock, flags);
2547
2548         /* the chain noise calibration will enabled PM upon completion
2549          * If chain noise has already been run, then we need to enable
2550          * power management here */
2551         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2552                 iwl_power_enable_management(priv);
2553
2554         /* Enable Rx differential gain and sensitivity calibrations */
2555         iwl_chain_noise_reset(priv);
2556         priv->start_calib = 1;
2557
2558 }
2559
2560 /*****************************************************************************
2561  *
2562  * mac80211 entry point functions
2563  *
2564  *****************************************************************************/
2565
2566 #define UCODE_READY_TIMEOUT     (4 * HZ)
2567
2568 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2569 {
2570         struct iwl_priv *priv = hw->priv;
2571         int ret;
2572         u16 pci_cmd;
2573
2574         IWL_DEBUG_MAC80211("enter\n");
2575
2576         if (pci_enable_device(priv->pci_dev)) {
2577                 IWL_ERROR("Fail to pci_enable_device\n");
2578                 return -ENODEV;
2579         }
2580         pci_restore_state(priv->pci_dev);
2581         pci_enable_msi(priv->pci_dev);
2582
2583         /* enable interrupts if needed: hw bug w/a */
2584         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2585         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2586                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2587                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2588         }
2589
2590         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2591                           DRV_NAME, priv);
2592         if (ret) {
2593                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2594                 goto out_disable_msi;
2595         }
2596
2597         /* we should be verifying the device is ready to be opened */
2598         mutex_lock(&priv->mutex);
2599
2600         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2601         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2602          * ucode filename and max sizes are card-specific. */
2603
2604         if (!priv->ucode_code.len) {
2605                 ret = iwl4965_read_ucode(priv);
2606                 if (ret) {
2607                         IWL_ERROR("Could not read microcode: %d\n", ret);
2608                         mutex_unlock(&priv->mutex);
2609                         goto out_release_irq;
2610                 }
2611         }
2612
2613         ret = __iwl4965_up(priv);
2614
2615         mutex_unlock(&priv->mutex);
2616
2617         iwl_rfkill_set_hw_state(priv);
2618
2619         if (ret)
2620                 goto out_release_irq;
2621
2622         if (iwl_is_rfkill(priv))
2623                 goto out;
2624
2625         IWL_DEBUG_INFO("Start UP work done.\n");
2626
2627         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2628                 return 0;
2629
2630         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2631          * mac80211 will not be run successfully. */
2632         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2633                         test_bit(STATUS_READY, &priv->status),
2634                         UCODE_READY_TIMEOUT);
2635         if (!ret) {
2636                 if (!test_bit(STATUS_READY, &priv->status)) {
2637                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2638                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2639                         ret = -ETIMEDOUT;
2640                         goto out_release_irq;
2641                 }
2642         }
2643
2644 out:
2645         priv->is_open = 1;
2646         IWL_DEBUG_MAC80211("leave\n");
2647         return 0;
2648
2649 out_release_irq:
2650         free_irq(priv->pci_dev->irq, priv);
2651 out_disable_msi:
2652         pci_disable_msi(priv->pci_dev);
2653         pci_disable_device(priv->pci_dev);
2654         priv->is_open = 0;
2655         IWL_DEBUG_MAC80211("leave - failed\n");
2656         return ret;
2657 }
2658
2659 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2660 {
2661         struct iwl_priv *priv = hw->priv;
2662
2663         IWL_DEBUG_MAC80211("enter\n");
2664
2665         if (!priv->is_open) {
2666                 IWL_DEBUG_MAC80211("leave - skip\n");
2667                 return;
2668         }
2669
2670         priv->is_open = 0;
2671
2672         if (iwl_is_ready_rf(priv)) {
2673                 /* stop mac, cancel any scan request and clear
2674                  * RXON_FILTER_ASSOC_MSK BIT
2675                  */
2676                 mutex_lock(&priv->mutex);
2677                 iwl_scan_cancel_timeout(priv, 100);
2678                 mutex_unlock(&priv->mutex);
2679         }
2680
2681         iwl4965_down(priv);
2682
2683         flush_workqueue(priv->workqueue);
2684         free_irq(priv->pci_dev->irq, priv);
2685         pci_disable_msi(priv->pci_dev);
2686         pci_save_state(priv->pci_dev);
2687         pci_disable_device(priv->pci_dev);
2688
2689         IWL_DEBUG_MAC80211("leave\n");
2690 }
2691
2692 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2693 {
2694         struct iwl_priv *priv = hw->priv;
2695
2696         IWL_DEBUG_MACDUMP("enter\n");
2697
2698         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2699                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2700
2701         if (iwl_tx_skb(priv, skb))
2702                 dev_kfree_skb_any(skb);
2703
2704         IWL_DEBUG_MACDUMP("leave\n");
2705         return 0;
2706 }
2707
2708 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2709                                  struct ieee80211_if_init_conf *conf)
2710 {
2711         struct iwl_priv *priv = hw->priv;
2712         unsigned long flags;
2713
2714         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2715
2716         if (priv->vif) {
2717                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2718                 return -EOPNOTSUPP;
2719         }
2720
2721         spin_lock_irqsave(&priv->lock, flags);
2722         priv->vif = conf->vif;
2723
2724         spin_unlock_irqrestore(&priv->lock, flags);
2725
2726         mutex_lock(&priv->mutex);
2727
2728         if (conf->mac_addr) {
2729                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2730                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2731         }
2732
2733         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2734                 /* we are not ready, will run again when ready */
2735                 set_bit(STATUS_MODE_PENDING, &priv->status);
2736
2737         mutex_unlock(&priv->mutex);
2738
2739         IWL_DEBUG_MAC80211("leave\n");
2740         return 0;
2741 }
2742
2743 /**
2744  * iwl4965_mac_config - mac80211 config callback
2745  *
2746  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2747  * be set inappropriately and the driver currently sets the hardware up to
2748  * use it whenever needed.
2749  */
2750 static int iwl4965_mac_config(struct ieee80211_hw *hw, u32 changed)
2751 {
2752         struct iwl_priv *priv = hw->priv;
2753         const struct iwl_channel_info *ch_info;
2754         struct ieee80211_conf *conf = &hw->conf;
2755         unsigned long flags;
2756         int ret = 0;
2757         u16 channel;
2758
2759         mutex_lock(&priv->mutex);
2760         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2761
2762         priv->current_ht_config.is_ht = conf->ht.enabled;
2763
2764         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2765                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2766                 goto out;
2767         }
2768
2769         if (!conf->radio_enabled)
2770                 iwl_radio_kill_sw_disable_radio(priv);
2771
2772         if (!iwl_is_ready(priv)) {
2773                 IWL_DEBUG_MAC80211("leave - not ready\n");
2774                 ret = -EIO;
2775                 goto out;
2776         }
2777
2778         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2779                      test_bit(STATUS_SCANNING, &priv->status))) {
2780                 IWL_DEBUG_MAC80211("leave - scanning\n");
2781                 mutex_unlock(&priv->mutex);
2782                 return 0;
2783         }
2784
2785         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2786         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2787         if (!is_channel_valid(ch_info)) {
2788                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2789                 ret = -EINVAL;
2790                 goto out;
2791         }
2792
2793         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2794             !is_channel_ibss(ch_info)) {
2795                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2796                         conf->channel->hw_value, conf->channel->band);
2797                 ret = -EINVAL;
2798                 goto out;
2799         }
2800
2801         spin_lock_irqsave(&priv->lock, flags);
2802
2803
2804         /* if we are switching from ht to 2.4 clear flags
2805          * from any ht related info since 2.4 does not
2806          * support ht */
2807         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2808 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2809             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2810 #endif
2811         )
2812                 priv->staging_rxon.flags = 0;
2813
2814         iwl_set_rxon_channel(priv, conf->channel);
2815
2816         iwl_set_flags_for_band(priv, conf->channel->band);
2817
2818         /* The list of supported rates and rate mask can be different
2819          * for each band; since the band may have changed, reset
2820          * the rate mask to what mac80211 lists */
2821         iwl4965_set_rate(priv);
2822
2823         spin_unlock_irqrestore(&priv->lock, flags);
2824
2825 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2826         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2827                 iwl4965_hw_channel_switch(priv, conf->channel);
2828                 goto out;
2829         }
2830 #endif
2831
2832         if (!conf->radio_enabled) {
2833                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2834                 goto out;
2835         }
2836
2837         if (iwl_is_rfkill(priv)) {
2838                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2839                 ret = -EIO;
2840                 goto out;
2841         }
2842
2843         if (conf->flags & IEEE80211_CONF_PS)
2844                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2845         else
2846                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2847         if (ret)
2848                 IWL_DEBUG_MAC80211("Error setting power level\n");
2849
2850         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2851                            priv->tx_power_user_lmt, conf->power_level);
2852
2853         iwl_set_tx_power(priv, conf->power_level, false);
2854
2855         iwl4965_set_rate(priv);
2856
2857         if (memcmp(&priv->active_rxon,
2858                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2859                 iwl4965_commit_rxon(priv);
2860         else
2861                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2862
2863         IWL_DEBUG_MAC80211("leave\n");
2864
2865 out:
2866         mutex_unlock(&priv->mutex);
2867         return ret;
2868 }
2869
2870 static void iwl4965_config_ap(struct iwl_priv *priv)
2871 {
2872         int ret = 0;
2873         unsigned long flags;
2874
2875         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2876                 return;
2877
2878         /* The following should be done only at AP bring up */
2879         if (!iwl_is_associated(priv)) {
2880
2881                 /* RXON - unassoc (to set timing command) */
2882                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2883                 iwl4965_commit_rxon(priv);
2884
2885                 /* RXON Timing */
2886                 iwl_setup_rxon_timing(priv);
2887                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2888                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2889                 if (ret)
2890                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2891                                         "Attempting to continue.\n");
2892
2893                 iwl_set_rxon_chain(priv);
2894
2895                 /* FIXME: what should be the assoc_id for AP? */
2896                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2897                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2898                         priv->staging_rxon.flags |=
2899                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2900                 else
2901                         priv->staging_rxon.flags &=
2902                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2903
2904                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2905                         if (priv->assoc_capability &
2906                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2907                                 priv->staging_rxon.flags |=
2908                                         RXON_FLG_SHORT_SLOT_MSK;
2909                         else
2910                                 priv->staging_rxon.flags &=
2911                                         ~RXON_FLG_SHORT_SLOT_MSK;
2912
2913                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2914                                 priv->staging_rxon.flags &=
2915                                         ~RXON_FLG_SHORT_SLOT_MSK;
2916                 }
2917                 /* restore RXON assoc */
2918                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2919                 iwl4965_commit_rxon(priv);
2920                 spin_lock_irqsave(&priv->lock, flags);
2921                 iwl_activate_qos(priv, 1);
2922                 spin_unlock_irqrestore(&priv->lock, flags);
2923                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2924         }
2925         iwl4965_send_beacon_cmd(priv);
2926
2927         /* FIXME - we need to add code here to detect a totally new
2928          * configuration, reset the AP, unassoc, rxon timing, assoc,
2929          * clear sta table, add BCAST sta... */
2930 }
2931
2932 /* temporary */
2933 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2934
2935 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2936                                         struct ieee80211_vif *vif,
2937                                     struct ieee80211_if_conf *conf)
2938 {
2939         struct iwl_priv *priv = hw->priv;
2940         unsigned long flags;
2941         int rc;
2942
2943         if (conf == NULL)
2944                 return -EIO;
2945
2946         if (priv->vif != vif) {
2947                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2948                 return 0;
2949         }
2950
2951         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2952             conf->changed & IEEE80211_IFCC_BEACON) {
2953                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2954                 if (!beacon)
2955                         return -ENOMEM;
2956                 rc = iwl4965_mac_beacon_update(hw, beacon);
2957                 if (rc)
2958                         return rc;
2959         }
2960
2961         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2962             (!conf->ssid_len)) {
2963                 IWL_DEBUG_MAC80211
2964                     ("Leaving in AP mode because HostAPD is not ready.\n");
2965                 return 0;
2966         }
2967
2968         if (!iwl_is_alive(priv))
2969                 return -EAGAIN;
2970
2971         mutex_lock(&priv->mutex);
2972
2973         if (conf->bssid)
2974                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2975
2976 /*
2977  * very dubious code was here; the probe filtering flag is never set:
2978  *
2979         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2980             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2981  */
2982
2983         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2984                 if (!conf->bssid) {
2985                         conf->bssid = priv->mac_addr;
2986                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2987                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2988                                            conf->bssid);
2989                 }
2990                 if (priv->ibss_beacon)
2991                         dev_kfree_skb(priv->ibss_beacon);
2992
2993                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2994         }
2995
2996         if (iwl_is_rfkill(priv))
2997                 goto done;
2998
2999         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3000             !is_multicast_ether_addr(conf->bssid)) {
3001                 /* If there is currently a HW scan going on in the background
3002                  * then we need to cancel it else the RXON below will fail. */
3003                 if (iwl_scan_cancel_timeout(priv, 100)) {
3004                         IWL_WARNING("Aborted scan still in progress "
3005                                     "after 100ms\n");
3006                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3007                         mutex_unlock(&priv->mutex);
3008                         return -EAGAIN;
3009                 }
3010                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3011
3012                 /* TODO: Audit driver for usage of these members and see
3013                  * if mac80211 deprecates them (priv->bssid looks like it
3014                  * shouldn't be there, but I haven't scanned the IBSS code
3015                  * to verify) - jpk */
3016                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3017
3018                 if (priv->iw_mode == NL80211_IFTYPE_AP)
3019                         iwl4965_config_ap(priv);
3020                 else {
3021                         rc = iwl4965_commit_rxon(priv);
3022                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3023                                 iwl_rxon_add_station(
3024                                         priv, priv->active_rxon.bssid_addr, 1);
3025                 }
3026
3027         } else {
3028                 iwl_scan_cancel_timeout(priv, 100);
3029                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3030                 iwl4965_commit_rxon(priv);
3031         }
3032
3033  done:
3034         spin_lock_irqsave(&priv->lock, flags);
3035         if (!conf->ssid_len)
3036                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3037         else
3038                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3039
3040         priv->essid_len = conf->ssid_len;
3041         spin_unlock_irqrestore(&priv->lock, flags);
3042
3043         IWL_DEBUG_MAC80211("leave\n");
3044         mutex_unlock(&priv->mutex);
3045
3046         return 0;
3047 }
3048
3049 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3050                                  unsigned int changed_flags,
3051                                  unsigned int *total_flags,
3052                                  int mc_count, struct dev_addr_list *mc_list)
3053 {
3054         struct iwl_priv *priv = hw->priv;
3055
3056         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3057                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3058                                    NL80211_IFTYPE_MONITOR,
3059                                    changed_flags, *total_flags);
3060                 /* queue work 'cuz mac80211 is holding a lock which
3061                  * prevents us from issuing (synchronous) f/w cmds */
3062                 queue_work(priv->workqueue, &priv->set_monitor);
3063         }
3064         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3065                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3066 }
3067
3068 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3069                                      struct ieee80211_if_init_conf *conf)
3070 {
3071         struct iwl_priv *priv = hw->priv;
3072
3073         IWL_DEBUG_MAC80211("enter\n");
3074
3075         mutex_lock(&priv->mutex);
3076
3077         if (iwl_is_ready_rf(priv)) {
3078                 iwl_scan_cancel_timeout(priv, 100);
3079                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3080                 iwl4965_commit_rxon(priv);
3081         }
3082         if (priv->vif == conf->vif) {
3083                 priv->vif = NULL;
3084                 memset(priv->bssid, 0, ETH_ALEN);
3085                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3086                 priv->essid_len = 0;
3087         }
3088         mutex_unlock(&priv->mutex);
3089
3090         IWL_DEBUG_MAC80211("leave\n");
3091
3092 }
3093
3094 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3095 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3096                                      struct ieee80211_vif *vif,
3097                                      struct ieee80211_bss_conf *bss_conf,
3098                                      u32 changes)
3099 {
3100         struct iwl_priv *priv = hw->priv;
3101
3102         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3103
3104         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3105                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3106                                    bss_conf->use_short_preamble);
3107                 if (bss_conf->use_short_preamble)
3108                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3109                 else
3110                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3111         }
3112
3113         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3114                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3115                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3116                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3117                 else
3118                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3119         }
3120
3121         if (changes & BSS_CHANGED_HT) {
3122                 iwl4965_ht_conf(priv, bss_conf);
3123                 iwl_set_rxon_chain(priv);
3124         }
3125
3126         if (changes & BSS_CHANGED_ASSOC) {
3127                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3128                 /* This should never happen as this function should
3129                  * never be called from interrupt context. */
3130                 if (WARN_ON_ONCE(in_interrupt()))
3131                         return;
3132                 if (bss_conf->assoc) {
3133                         priv->assoc_id = bss_conf->aid;
3134                         priv->beacon_int = bss_conf->beacon_int;
3135                         priv->power_data.dtim_period = bss_conf->dtim_period;
3136                         priv->timestamp = bss_conf->timestamp;
3137                         priv->assoc_capability = bss_conf->assoc_capability;
3138
3139                         /* we have just associated, don't start scan too early
3140                          * leave time for EAPOL exchange to complete
3141                          */
3142                         priv->next_scan_jiffies = jiffies +
3143                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3144                         mutex_lock(&priv->mutex);
3145                         iwl4965_post_associate(priv);
3146                         mutex_unlock(&priv->mutex);
3147                 } else {
3148                         priv->assoc_id = 0;
3149                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3150                 }
3151         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3152                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3153                         iwl_send_rxon_assoc(priv);
3154         }
3155
3156 }
3157
3158 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3159 {
3160         unsigned long flags;
3161         struct iwl_priv *priv = hw->priv;
3162         int ret;
3163
3164         IWL_DEBUG_MAC80211("enter\n");
3165
3166         mutex_lock(&priv->mutex);
3167         spin_lock_irqsave(&priv->lock, flags);
3168
3169         if (!iwl_is_ready_rf(priv)) {
3170                 ret = -EIO;
3171                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3172                 goto out_unlock;
3173         }
3174
3175         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3176                 ret = -EIO;
3177                 IWL_ERROR("ERROR: APs don't scan\n");
3178                 goto out_unlock;
3179         }
3180
3181         /* We don't schedule scan within next_scan_jiffies period.
3182          * Avoid scanning during possible EAPOL exchange, return
3183          * success immediately.
3184          */
3185         if (priv->next_scan_jiffies &&
3186             time_after(priv->next_scan_jiffies, jiffies)) {
3187                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3188                 queue_work(priv->workqueue, &priv->scan_completed);
3189                 ret = 0;
3190                 goto out_unlock;
3191         }
3192
3193         /* if we just finished scan ask for delay */
3194         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3195             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3196                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3197                 queue_work(priv->workqueue, &priv->scan_completed);
3198                 ret = 0;
3199                 goto out_unlock;
3200         }
3201
3202         if (ssid_len) {
3203                 priv->one_direct_scan = 1;
3204                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3205                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3206         } else {
3207                 priv->one_direct_scan = 0;
3208         }
3209
3210         ret = iwl_scan_initiate(priv);
3211
3212         IWL_DEBUG_MAC80211("leave\n");
3213
3214 out_unlock:
3215         spin_unlock_irqrestore(&priv->lock, flags);
3216         mutex_unlock(&priv->mutex);
3217
3218         return ret;
3219 }
3220
3221 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3222                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3223                         u32 iv32, u16 *phase1key)
3224 {
3225         struct iwl_priv *priv = hw->priv;
3226         u8 sta_id = IWL_INVALID_STATION;
3227         unsigned long flags;
3228         __le16 key_flags = 0;
3229         int i;
3230
3231         IWL_DEBUG_MAC80211("enter\n");
3232
3233         sta_id = iwl_find_station(priv, addr);
3234         if (sta_id == IWL_INVALID_STATION) {
3235                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3236                                    addr);
3237                 return;
3238         }
3239
3240         iwl_scan_cancel_timeout(priv, 100);
3241
3242         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3243         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3244         key_flags &= ~STA_KEY_FLG_INVALID;
3245
3246         if (sta_id == priv->hw_params.bcast_sta_id)
3247                 key_flags |= STA_KEY_MULTICAST_MSK;
3248
3249         spin_lock_irqsave(&priv->sta_lock, flags);
3250
3251         priv->stations[sta_id].sta.key.key_flags = key_flags;
3252         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3253
3254         for (i = 0; i < 5; i++)
3255                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3256                         cpu_to_le16(phase1key[i]);
3257
3258         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3259         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3260
3261         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3262
3263         spin_unlock_irqrestore(&priv->sta_lock, flags);
3264
3265         IWL_DEBUG_MAC80211("leave\n");
3266 }
3267
3268 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3269                            const u8 *local_addr, const u8 *addr,
3270                            struct ieee80211_key_conf *key)
3271 {
3272         struct iwl_priv *priv = hw->priv;
3273         int ret = 0;
3274         u8 sta_id = IWL_INVALID_STATION;
3275         u8 is_default_wep_key = 0;
3276
3277         IWL_DEBUG_MAC80211("enter\n");
3278
3279         if (priv->hw_params.sw_crypto) {
3280                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3281                 return -EOPNOTSUPP;
3282         }
3283
3284         if (is_zero_ether_addr(addr))
3285                 /* only support pairwise keys */
3286                 return -EOPNOTSUPP;
3287
3288         sta_id = iwl_find_station(priv, addr);
3289         if (sta_id == IWL_INVALID_STATION) {
3290                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3291                                    addr);
3292                 return -EINVAL;
3293
3294         }
3295
3296         mutex_lock(&priv->mutex);
3297         iwl_scan_cancel_timeout(priv, 100);
3298         mutex_unlock(&priv->mutex);
3299
3300         /* If we are getting WEP group key and we didn't receive any key mapping
3301          * so far, we are in legacy wep mode (group key only), otherwise we are
3302          * in 1X mode.
3303          * In legacy wep mode, we use another host command to the uCode */
3304         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3305                 priv->iw_mode != NL80211_IFTYPE_AP) {
3306                 if (cmd == SET_KEY)
3307                         is_default_wep_key = !priv->key_mapping_key;
3308                 else
3309                         is_default_wep_key =
3310                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3311         }
3312
3313         switch (cmd) {
3314         case SET_KEY:
3315                 if (is_default_wep_key)
3316                         ret = iwl_set_default_wep_key(priv, key);
3317                 else
3318                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3319
3320                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3321                 break;
3322         case DISABLE_KEY:
3323                 if (is_default_wep_key)
3324                         ret = iwl_remove_default_wep_key(priv, key);
3325                 else
3326                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3327
3328                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3329                 break;
3330         default:
3331                 ret = -EINVAL;
3332         }
3333
3334         IWL_DEBUG_MAC80211("leave\n");
3335
3336         return ret;
3337 }
3338
3339 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3340                            const struct ieee80211_tx_queue_params *params)
3341 {
3342         struct iwl_priv *priv = hw->priv;
3343         unsigned long flags;
3344         int q;
3345
3346         IWL_DEBUG_MAC80211("enter\n");
3347
3348         if (!iwl_is_ready_rf(priv)) {
3349                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3350                 return -EIO;
3351         }
3352
3353         if (queue >= AC_NUM) {
3354                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3355                 return 0;
3356         }
3357
3358         if (!priv->qos_data.qos_enable) {
3359                 priv->qos_data.qos_active = 0;
3360                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3361                 return 0;
3362         }
3363         q = AC_NUM - 1 - queue;
3364
3365         spin_lock_irqsave(&priv->lock, flags);
3366
3367         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3368         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3369         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3370         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3371                         cpu_to_le16((params->txop * 32));
3372
3373         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3374         priv->qos_data.qos_active = 1;
3375
3376         if (priv->iw_mode == NL80211_IFTYPE_AP)
3377                 iwl_activate_qos(priv, 1);
3378         else if (priv->assoc_id && iwl_is_associated(priv))
3379                 iwl_activate_qos(priv, 0);
3380
3381         spin_unlock_irqrestore(&priv->lock, flags);
3382
3383         IWL_DEBUG_MAC80211("leave\n");
3384         return 0;
3385 }
3386
3387 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3388                              enum ieee80211_ampdu_mlme_action action,
3389                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3390 {
3391         struct iwl_priv *priv = hw->priv;
3392
3393         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3394                      sta->addr, tid);
3395
3396         if (!(priv->cfg->sku & IWL_SKU_N))
3397                 return -EACCES;
3398
3399         switch (action) {
3400         case IEEE80211_AMPDU_RX_START:
3401                 IWL_DEBUG_HT("start Rx\n");
3402                 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3403         case IEEE80211_AMPDU_RX_STOP:
3404                 IWL_DEBUG_HT("stop Rx\n");
3405                 return iwl_rx_agg_stop(priv, sta->addr, tid);
3406         case IEEE80211_AMPDU_TX_START:
3407                 IWL_DEBUG_HT("start Tx\n");
3408                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3409         case IEEE80211_AMPDU_TX_STOP:
3410                 IWL_DEBUG_HT("stop Tx\n");
3411                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3412         default:
3413                 IWL_DEBUG_HT("unknown\n");
3414                 return -EINVAL;
3415                 break;
3416         }
3417         return 0;
3418 }
3419 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3420                                 struct ieee80211_tx_queue_stats *stats)
3421 {
3422         struct iwl_priv *priv = hw->priv;
3423         int i, avail;
3424         struct iwl_tx_queue *txq;
3425         struct iwl_queue *q;
3426         unsigned long flags;
3427
3428         IWL_DEBUG_MAC80211("enter\n");
3429
3430         if (!iwl_is_ready_rf(priv)) {
3431                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3432                 return -EIO;
3433         }
3434
3435         spin_lock_irqsave(&priv->lock, flags);
3436
3437         for (i = 0; i < AC_NUM; i++) {
3438                 txq = &priv->txq[i];
3439                 q = &txq->q;
3440                 avail = iwl_queue_space(q);
3441
3442                 stats[i].len = q->n_window - avail;
3443                 stats[i].limit = q->n_window - q->high_mark;
3444                 stats[i].count = q->n_window;
3445
3446         }
3447         spin_unlock_irqrestore(&priv->lock, flags);
3448
3449         IWL_DEBUG_MAC80211("leave\n");
3450
3451         return 0;
3452 }
3453
3454 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3455                              struct ieee80211_low_level_stats *stats)
3456 {
3457         struct iwl_priv *priv = hw->priv;
3458
3459         priv = hw->priv;
3460         IWL_DEBUG_MAC80211("enter\n");
3461         IWL_DEBUG_MAC80211("leave\n");
3462
3463         return 0;
3464 }
3465
3466 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3467 {
3468         struct iwl_priv *priv = hw->priv;
3469         unsigned long flags;
3470
3471         mutex_lock(&priv->mutex);
3472         IWL_DEBUG_MAC80211("enter\n");
3473
3474         spin_lock_irqsave(&priv->lock, flags);
3475         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3476         spin_unlock_irqrestore(&priv->lock, flags);
3477
3478         iwl_reset_qos(priv);
3479
3480         spin_lock_irqsave(&priv->lock, flags);
3481         priv->assoc_id = 0;
3482         priv->assoc_capability = 0;
3483         priv->assoc_station_added = 0;
3484
3485         /* new association get rid of ibss beacon skb */
3486         if (priv->ibss_beacon)
3487                 dev_kfree_skb(priv->ibss_beacon);
3488
3489         priv->ibss_beacon = NULL;
3490
3491         priv->beacon_int = priv->hw->conf.beacon_int;
3492         priv->timestamp = 0;
3493         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3494                 priv->beacon_int = 0;
3495
3496         spin_unlock_irqrestore(&priv->lock, flags);
3497
3498         if (!iwl_is_ready_rf(priv)) {
3499                 IWL_DEBUG_MAC80211("leave - not ready\n");
3500                 mutex_unlock(&priv->mutex);
3501                 return;
3502         }
3503
3504         /* we are restarting association process
3505          * clear RXON_FILTER_ASSOC_MSK bit
3506          */
3507         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3508                 iwl_scan_cancel_timeout(priv, 100);
3509                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3510                 iwl4965_commit_rxon(priv);
3511         }
3512
3513         iwl_power_update_mode(priv, 0);
3514
3515         /* Per mac80211.h: This is only used in IBSS mode... */
3516         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3517
3518                 /* switch to CAM during association period.
3519                  * the ucode will block any association/authentication
3520                  * frome during assiciation period if it can not hear
3521                  * the AP because of PM. the timer enable PM back is
3522                  * association do not complete
3523                  */
3524                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3525                                                      IEEE80211_CHAN_RADAR))
3526                                 iwl_power_disable_management(priv, 3000);
3527
3528                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3529                 mutex_unlock(&priv->mutex);
3530                 return;
3531         }
3532
3533         iwl4965_set_rate(priv);
3534
3535         mutex_unlock(&priv->mutex);
3536
3537         IWL_DEBUG_MAC80211("leave\n");
3538 }
3539
3540 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3541 {
3542         struct iwl_priv *priv = hw->priv;
3543         unsigned long flags;
3544         __le64 timestamp;
3545
3546         mutex_lock(&priv->mutex);
3547         IWL_DEBUG_MAC80211("enter\n");
3548
3549         if (!iwl_is_ready_rf(priv)) {
3550                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3551                 mutex_unlock(&priv->mutex);
3552                 return -EIO;
3553         }
3554
3555         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3556                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3557                 mutex_unlock(&priv->mutex);
3558                 return -EIO;
3559         }
3560
3561         spin_lock_irqsave(&priv->lock, flags);
3562
3563         if (priv->ibss_beacon)
3564                 dev_kfree_skb(priv->ibss_beacon);
3565
3566         priv->ibss_beacon = skb;
3567
3568         priv->assoc_id = 0;
3569         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3570         priv->timestamp = le64_to_cpu(timestamp);
3571
3572         IWL_DEBUG_MAC80211("leave\n");
3573         spin_unlock_irqrestore(&priv->lock, flags);
3574
3575         iwl_reset_qos(priv);
3576
3577         iwl4965_post_associate(priv);
3578
3579         mutex_unlock(&priv->mutex);
3580
3581         return 0;
3582 }
3583
3584 /*****************************************************************************
3585  *
3586  * sysfs attributes
3587  *
3588  *****************************************************************************/
3589
3590 #ifdef CONFIG_IWLWIFI_DEBUG
3591
3592 /*
3593  * The following adds a new attribute to the sysfs representation
3594  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3595  * used for controlling the debug level.
3596  *
3597  * See the level definitions in iwl for details.
3598  */
3599
3600 static ssize_t show_debug_level(struct device *d,
3601                                 struct device_attribute *attr, char *buf)
3602 {
3603         struct iwl_priv *priv = d->driver_data;
3604
3605         return sprintf(buf, "0x%08X\n", priv->debug_level);
3606 }
3607 static ssize_t store_debug_level(struct device *d,
3608                                 struct device_attribute *attr,
3609                                  const char *buf, size_t count)
3610 {
3611         struct iwl_priv *priv = d->driver_data;
3612         unsigned long val;
3613         int ret;
3614
3615         ret = strict_strtoul(buf, 0, &val);
3616         if (ret)
3617                 printk(KERN_INFO DRV_NAME
3618                        ": %s is not in hex or decimal form.\n", buf);
3619         else
3620                 priv->debug_level = val;
3621
3622         return strnlen(buf, count);
3623 }
3624
3625 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3626                         show_debug_level, store_debug_level);
3627
3628
3629 #endif /* CONFIG_IWLWIFI_DEBUG */
3630
3631
3632 static ssize_t show_version(struct device *d,
3633                                 struct device_attribute *attr, char *buf)
3634 {
3635         struct iwl_priv *priv = d->driver_data;
3636         struct iwl_alive_resp *palive = &priv->card_alive;
3637         ssize_t pos = 0;
3638         u16 eeprom_ver;
3639
3640         if (palive->is_valid)
3641                 pos += sprintf(buf + pos,
3642                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3643                                 "fw type: 0x%01X 0x%01X\n",
3644                                 palive->ucode_major, palive->ucode_minor,
3645                                 palive->sw_rev[0], palive->sw_rev[1],
3646                                 palive->ver_type, palive->ver_subtype);
3647         else
3648                 pos += sprintf(buf + pos, "fw not loaded\n");
3649
3650         if (priv->eeprom) {
3651                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3652                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3653                                  eeprom_ver);
3654         } else {
3655                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3656         }
3657
3658         return pos;
3659 }
3660
3661 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3662
3663 static ssize_t show_temperature(struct device *d,
3664                                 struct device_attribute *attr, char *buf)
3665 {
3666         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3667
3668         if (!iwl_is_alive(priv))
3669                 return -EAGAIN;
3670
3671         return sprintf(buf, "%d\n", priv->temperature);
3672 }
3673
3674 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3675
3676 static ssize_t show_tx_power(struct device *d,
3677                              struct device_attribute *attr, char *buf)
3678 {
3679         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3680         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3681 }
3682
3683 static ssize_t store_tx_power(struct device *d,
3684                               struct device_attribute *attr,
3685                               const char *buf, size_t count)
3686 {
3687         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3688         unsigned long val;
3689         int ret;
3690
3691         ret = strict_strtoul(buf, 10, &val);
3692         if (ret)
3693                 printk(KERN_INFO DRV_NAME
3694                        ": %s is not in decimal form.\n", buf);
3695         else
3696                 iwl_set_tx_power(priv, val, false);
3697
3698         return count;
3699 }
3700
3701 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3702
3703 static ssize_t show_flags(struct device *d,
3704                           struct device_attribute *attr, char *buf)
3705 {
3706         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3707
3708         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3709 }
3710
3711 static ssize_t store_flags(struct device *d,
3712                            struct device_attribute *attr,
3713                            const char *buf, size_t count)
3714 {
3715         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3716         unsigned long val;
3717         u32 flags;
3718         int ret = strict_strtoul(buf, 0, &val);
3719         if (ret)
3720                 return ret;
3721         flags = (u32)val;
3722
3723         mutex_lock(&priv->mutex);
3724         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3725                 /* Cancel any currently running scans... */
3726                 if (iwl_scan_cancel_timeout(priv, 100))
3727                         IWL_WARNING("Could not cancel scan.\n");
3728                 else {
3729                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3730                         priv->staging_rxon.flags = cpu_to_le32(flags);
3731                         iwl4965_commit_rxon(priv);
3732                 }
3733         }
3734         mutex_unlock(&priv->mutex);
3735
3736         return count;
3737 }
3738
3739 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3740
3741 static ssize_t show_filter_flags(struct device *d,
3742                                  struct device_attribute *attr, char *buf)
3743 {
3744         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3745
3746         return sprintf(buf, "0x%04X\n",
3747                 le32_to_cpu(priv->active_rxon.filter_flags));
3748 }
3749
3750 static ssize_t store_filter_flags(struct device *d,
3751                                   struct device_attribute *attr,
3752                                   const char *buf, size_t count)
3753 {
3754         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3755         unsigned long val;
3756         u32 filter_flags;
3757         int ret = strict_strtoul(buf, 0, &val);
3758         if (ret)
3759                 return ret;
3760         filter_flags = (u32)val;
3761
3762         mutex_lock(&priv->mutex);
3763         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3764                 /* Cancel any currently running scans... */
3765                 if (iwl_scan_cancel_timeout(priv, 100))
3766                         IWL_WARNING("Could not cancel scan.\n");
3767                 else {
3768                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3769                                        "0x%04X\n", filter_flags);
3770                         priv->staging_rxon.filter_flags =
3771                                 cpu_to_le32(filter_flags);
3772                         iwl4965_commit_rxon(priv);
3773                 }
3774         }
3775         mutex_unlock(&priv->mutex);
3776
3777         return count;
3778 }
3779
3780 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3781                    store_filter_flags);
3782
3783 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3784
3785 static ssize_t show_measurement(struct device *d,
3786                                 struct device_attribute *attr, char *buf)
3787 {
3788         struct iwl_priv *priv = dev_get_drvdata(d);
3789         struct iwl4965_spectrum_notification measure_report;
3790         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3791         u8 *data = (u8 *)&measure_report;
3792         unsigned long flags;
3793
3794         spin_lock_irqsave(&priv->lock, flags);
3795         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3796                 spin_unlock_irqrestore(&priv->lock, flags);
3797                 return 0;
3798         }
3799         memcpy(&measure_report, &priv->measure_report, size);
3800         priv->measurement_status = 0;
3801         spin_unlock_irqrestore(&priv->lock, flags);
3802
3803         while (size && (PAGE_SIZE - len)) {
3804                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3805                                    PAGE_SIZE - len, 1);
3806                 len = strlen(buf);
3807                 if (PAGE_SIZE - len)
3808                         buf[len++] = '\n';
3809
3810                 ofs += 16;
3811                 size -= min(size, 16U);
3812         }
3813
3814         return len;
3815 }
3816
3817 static ssize_t store_measurement(struct device *d,
3818                                  struct device_attribute *attr,
3819                                  const char *buf, size_t count)
3820 {
3821         struct iwl_priv *priv = dev_get_drvdata(d);
3822         struct ieee80211_measurement_params params = {
3823                 .channel = le16_to_cpu(priv->active_rxon.channel),
3824                 .start_time = cpu_to_le64(priv->last_tsf),
3825                 .duration = cpu_to_le16(1),
3826         };
3827         u8 type = IWL_MEASURE_BASIC;
3828         u8 buffer[32];
3829         u8 channel;
3830
3831         if (count) {
3832                 char *p = buffer;
3833                 strncpy(buffer, buf, min(sizeof(buffer), count));
3834                 channel = simple_strtoul(p, NULL, 0);
3835                 if (channel)
3836                         params.channel = channel;
3837
3838                 p = buffer;
3839                 while (*p && *p != ' ')
3840                         p++;
3841                 if (*p)
3842                         type = simple_strtoul(p + 1, NULL, 0);
3843         }
3844
3845         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3846                        "channel %d (for '%s')\n", type, params.channel, buf);
3847         iwl4965_get_measurement(priv, &params, type);
3848
3849         return count;
3850 }
3851
3852 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3853                    show_measurement, store_measurement);
3854 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3855
3856 static ssize_t store_retry_rate(struct device *d,
3857                                 struct device_attribute *attr,
3858                                 const char *buf, size_t count)
3859 {
3860         struct iwl_priv *priv = dev_get_drvdata(d);
3861         long val;
3862         int ret  = strict_strtol(buf, 10, &val);
3863         if (!ret)
3864                 return ret;
3865
3866         priv->retry_rate = (val > 0) ? val : 1;
3867
3868         return count;
3869 }
3870
3871 static ssize_t show_retry_rate(struct device *d,
3872                                struct device_attribute *attr, char *buf)
3873 {
3874         struct iwl_priv *priv = dev_get_drvdata(d);
3875         return sprintf(buf, "%d", priv->retry_rate);
3876 }
3877
3878 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3879                    store_retry_rate);
3880
3881 static ssize_t store_power_level(struct device *d,
3882                                  struct device_attribute *attr,
3883                                  const char *buf, size_t count)
3884 {
3885         struct iwl_priv *priv = dev_get_drvdata(d);
3886         int ret;
3887         unsigned long mode;
3888
3889
3890         mutex_lock(&priv->mutex);
3891
3892         if (!iwl_is_ready(priv)) {
3893                 ret = -EAGAIN;
3894                 goto out;
3895         }
3896
3897         ret = strict_strtoul(buf, 10, &mode);
3898         if (ret)
3899                 goto out;
3900
3901         ret = iwl_power_set_user_mode(priv, mode);
3902         if (ret) {
3903                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3904                 goto out;
3905         }
3906         ret = count;
3907
3908  out:
3909         mutex_unlock(&priv->mutex);
3910         return ret;
3911 }
3912
3913 static ssize_t show_power_level(struct device *d,
3914                                 struct device_attribute *attr, char *buf)
3915 {
3916         struct iwl_priv *priv = dev_get_drvdata(d);
3917         int mode = priv->power_data.user_power_setting;
3918         int system = priv->power_data.system_power_setting;
3919         int level = priv->power_data.power_mode;
3920         char *p = buf;
3921
3922         switch (system) {
3923         case IWL_POWER_SYS_AUTO:
3924                 p += sprintf(p, "SYSTEM:auto");
3925                 break;
3926         case IWL_POWER_SYS_AC:
3927                 p += sprintf(p, "SYSTEM:ac");
3928                 break;
3929         case IWL_POWER_SYS_BATTERY:
3930                 p += sprintf(p, "SYSTEM:battery");
3931                 break;
3932         }
3933
3934         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3935         p += sprintf(p, "\tINDEX:%d", level);
3936         p += sprintf(p, "\n");
3937         return p - buf + 1;
3938 }
3939
3940 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3941                    store_power_level);
3942
3943 static ssize_t show_channels(struct device *d,
3944                              struct device_attribute *attr, char *buf)
3945 {
3946
3947         struct iwl_priv *priv = dev_get_drvdata(d);
3948         struct ieee80211_channel *channels = NULL;
3949         const struct ieee80211_supported_band *supp_band = NULL;
3950         int len = 0, i;
3951         int count = 0;
3952
3953         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3954                 return -EAGAIN;
3955
3956         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3957         channels = supp_band->channels;
3958         count = supp_band->n_channels;
3959
3960         len += sprintf(&buf[len],
3961                         "Displaying %d channels in 2.4GHz band "
3962                         "(802.11bg):\n", count);
3963
3964         for (i = 0; i < count; i++)
3965                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3966                                 ieee80211_frequency_to_channel(
3967                                 channels[i].center_freq),
3968                                 channels[i].max_power,
3969                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3970                                 " (IEEE 802.11h required)" : "",
3971                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3972                                 || (channels[i].flags &
3973                                 IEEE80211_CHAN_RADAR)) ? "" :
3974                                 ", IBSS",
3975                                 channels[i].flags &
3976                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3977                                 "passive only" : "active/passive");
3978
3979         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3980         channels = supp_band->channels;
3981         count = supp_band->n_channels;
3982
3983         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3984                         "(802.11a):\n", count);
3985
3986         for (i = 0; i < count; i++)
3987                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3988                                 ieee80211_frequency_to_channel(
3989                                 channels[i].center_freq),
3990                                 channels[i].max_power,
3991                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3992                                 " (IEEE 802.11h required)" : "",
3993                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3994                                 || (channels[i].flags &
3995                                 IEEE80211_CHAN_RADAR)) ? "" :
3996                                 ", IBSS",
3997                                 channels[i].flags &
3998                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3999                                 "passive only" : "active/passive");
4000
4001         return len;
4002 }
4003
4004 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4005
4006 static ssize_t show_statistics(struct device *d,
4007                                struct device_attribute *attr, char *buf)
4008 {
4009         struct iwl_priv *priv = dev_get_drvdata(d);
4010         u32 size = sizeof(struct iwl_notif_statistics);
4011         u32 len = 0, ofs = 0;
4012         u8 *data = (u8 *)&priv->statistics;
4013         int rc = 0;
4014
4015         if (!iwl_is_alive(priv))
4016                 return -EAGAIN;
4017
4018         mutex_lock(&priv->mutex);
4019         rc = iwl_send_statistics_request(priv, 0);
4020         mutex_unlock(&priv->mutex);
4021
4022         if (rc) {
4023                 len = sprintf(buf,
4024                               "Error sending statistics request: 0x%08X\n", rc);
4025                 return len;
4026         }
4027
4028         while (size && (PAGE_SIZE - len)) {
4029                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4030                                    PAGE_SIZE - len, 1);
4031                 len = strlen(buf);
4032                 if (PAGE_SIZE - len)
4033                         buf[len++] = '\n';
4034
4035                 ofs += 16;
4036                 size -= min(size, 16U);
4037         }
4038
4039         return len;
4040 }
4041
4042 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4043
4044 static ssize_t show_status(struct device *d,
4045                            struct device_attribute *attr, char *buf)
4046 {
4047         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4048         if (!iwl_is_alive(priv))
4049                 return -EAGAIN;
4050         return sprintf(buf, "0x%08x\n", (int)priv->status);
4051 }
4052
4053 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4054
4055 /*****************************************************************************
4056  *
4057  * driver setup and teardown
4058  *
4059  *****************************************************************************/
4060
4061 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4062 {
4063         priv->workqueue = create_workqueue(DRV_NAME);
4064
4065         init_waitqueue_head(&priv->wait_command_queue);
4066
4067         INIT_WORK(&priv->up, iwl4965_bg_up);
4068         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4069         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4070         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4071         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4072         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4073         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4074         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4075         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4076
4077         iwl_setup_scan_deferred_work(priv);
4078         iwl_setup_power_deferred_work(priv);
4079
4080         if (priv->cfg->ops->lib->setup_deferred_work)
4081                 priv->cfg->ops->lib->setup_deferred_work(priv);
4082
4083         init_timer(&priv->statistics_periodic);
4084         priv->statistics_periodic.data = (unsigned long)priv;
4085         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4086
4087         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4088                      iwl4965_irq_tasklet, (unsigned long)priv);
4089 }
4090
4091 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4092 {
4093         if (priv->cfg->ops->lib->cancel_deferred_work)
4094                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4095
4096         cancel_delayed_work_sync(&priv->init_alive_start);
4097         cancel_delayed_work(&priv->scan_check);
4098         cancel_delayed_work_sync(&priv->set_power_save);
4099         cancel_delayed_work(&priv->alive_start);
4100         cancel_work_sync(&priv->beacon_update);
4101         del_timer_sync(&priv->statistics_periodic);
4102 }
4103
4104 static struct attribute *iwl4965_sysfs_entries[] = {
4105         &dev_attr_channels.attr,
4106         &dev_attr_flags.attr,
4107         &dev_attr_filter_flags.attr,
4108 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4109         &dev_attr_measurement.attr,
4110 #endif
4111         &dev_attr_power_level.attr,
4112         &dev_attr_retry_rate.attr,
4113         &dev_attr_statistics.attr,
4114         &dev_attr_status.attr,
4115         &dev_attr_temperature.attr,
4116         &dev_attr_tx_power.attr,
4117 #ifdef CONFIG_IWLWIFI_DEBUG
4118         &dev_attr_debug_level.attr,
4119 #endif
4120         &dev_attr_version.attr,
4121
4122         NULL
4123 };
4124
4125 static struct attribute_group iwl4965_attribute_group = {
4126         .name = NULL,           /* put in device directory */
4127         .attrs = iwl4965_sysfs_entries,
4128 };
4129
4130 static struct ieee80211_ops iwl4965_hw_ops = {
4131         .tx = iwl4965_mac_tx,
4132         .start = iwl4965_mac_start,
4133         .stop = iwl4965_mac_stop,
4134         .add_interface = iwl4965_mac_add_interface,
4135         .remove_interface = iwl4965_mac_remove_interface,
4136         .config = iwl4965_mac_config,
4137         .config_interface = iwl4965_mac_config_interface,
4138         .configure_filter = iwl4965_configure_filter,
4139         .set_key = iwl4965_mac_set_key,
4140         .update_tkip_key = iwl4965_mac_update_tkip_key,
4141         .get_stats = iwl4965_mac_get_stats,
4142         .get_tx_stats = iwl4965_mac_get_tx_stats,
4143         .conf_tx = iwl4965_mac_conf_tx,
4144         .reset_tsf = iwl4965_mac_reset_tsf,
4145         .bss_info_changed = iwl4965_bss_info_changed,
4146         .ampdu_action = iwl4965_mac_ampdu_action,
4147         .hw_scan = iwl_mac_hw_scan
4148 };
4149
4150 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4151 {
4152         int err = 0;
4153         struct iwl_priv *priv;
4154         struct ieee80211_hw *hw;
4155         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4156         unsigned long flags;
4157
4158         /************************
4159          * 1. Allocating HW data
4160          ************************/
4161
4162         /* Disabling hardware scan means that mac80211 will perform scans
4163          * "the hard way", rather than using device's scan. */
4164         if (cfg->mod_params->disable_hw_scan) {
4165                 if (cfg->mod_params->debug & IWL_DL_INFO)
4166                         dev_printk(KERN_DEBUG, &(pdev->dev),
4167                                    "Disabling hw_scan\n");
4168                 iwl4965_hw_ops.hw_scan = NULL;
4169         }
4170
4171         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4172         if (!hw) {
4173                 err = -ENOMEM;
4174                 goto out;
4175         }
4176         priv = hw->priv;
4177         /* At this point both hw and priv are allocated. */
4178
4179         SET_IEEE80211_DEV(hw, &pdev->dev);
4180
4181         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4182         priv->cfg = cfg;
4183         priv->pci_dev = pdev;
4184
4185 #ifdef CONFIG_IWLWIFI_DEBUG
4186         priv->debug_level = priv->cfg->mod_params->debug;
4187         atomic_set(&priv->restrict_refcnt, 0);
4188 #endif
4189
4190         /**************************
4191          * 2. Initializing PCI bus
4192          **************************/
4193         if (pci_enable_device(pdev)) {
4194                 err = -ENODEV;
4195                 goto out_ieee80211_free_hw;
4196         }
4197
4198         pci_set_master(pdev);
4199
4200         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4201         if (!err)
4202                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4203         if (err) {
4204                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4205                 if (!err)
4206                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4207                 /* both attempts failed: */
4208                 if (err) {
4209                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4210                                 DRV_NAME);
4211                         goto out_pci_disable_device;
4212                 }
4213         }
4214
4215         err = pci_request_regions(pdev, DRV_NAME);
4216         if (err)
4217                 goto out_pci_disable_device;
4218
4219         pci_set_drvdata(pdev, priv);
4220
4221
4222         /***********************
4223          * 3. Read REV register
4224          ***********************/
4225         priv->hw_base = pci_iomap(pdev, 0, 0);
4226         if (!priv->hw_base) {
4227                 err = -ENODEV;
4228                 goto out_pci_release_regions;
4229         }
4230
4231         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4232                 (unsigned long long) pci_resource_len(pdev, 0));
4233         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4234
4235         iwl_hw_detect(priv);
4236         printk(KERN_INFO DRV_NAME
4237                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4238                 priv->cfg->name, priv->hw_rev);
4239
4240         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4241          * PCI Tx retries from interfering with C3 CPU state */
4242         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4243
4244         /* amp init */
4245         err = priv->cfg->ops->lib->apm_ops.init(priv);
4246         if (err < 0) {
4247                 IWL_DEBUG_INFO("Failed to init APMG\n");
4248                 goto out_iounmap;
4249         }
4250         /*****************
4251          * 4. Read EEPROM
4252          *****************/
4253         /* Read the EEPROM */
4254         err = iwl_eeprom_init(priv);
4255         if (err) {
4256                 IWL_ERROR("Unable to init EEPROM\n");
4257                 goto out_iounmap;
4258         }
4259         err = iwl_eeprom_check_version(priv);
4260         if (err)
4261                 goto out_iounmap;
4262
4263         /* extract MAC Address */
4264         iwl_eeprom_get_mac(priv, priv->mac_addr);
4265         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4266         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4267
4268         /************************
4269          * 5. Setup HW constants
4270          ************************/
4271         if (iwl_set_hw_params(priv)) {
4272                 IWL_ERROR("failed to set hw parameters\n");
4273                 goto out_free_eeprom;
4274         }
4275
4276         /*******************
4277          * 6. Setup priv
4278          *******************/
4279
4280         err = iwl_init_drv(priv);
4281         if (err)
4282                 goto out_free_eeprom;
4283         /* At this point both hw and priv are initialized. */
4284
4285         /**********************************
4286          * 7. Initialize module parameters
4287          **********************************/
4288
4289         /* Disable radio (SW RF KILL) via parameter when loading driver */
4290         if (priv->cfg->mod_params->disable) {
4291                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4292                 IWL_DEBUG_INFO("Radio disabled.\n");
4293         }
4294
4295         /********************
4296          * 8. Setup services
4297          ********************/
4298         spin_lock_irqsave(&priv->lock, flags);
4299         iwl4965_disable_interrupts(priv);
4300         spin_unlock_irqrestore(&priv->lock, flags);
4301
4302         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4303         if (err) {
4304                 IWL_ERROR("failed to create sysfs device attributes\n");
4305                 goto out_uninit_drv;
4306         }
4307
4308
4309         iwl_setup_deferred_work(priv);
4310         iwl_setup_rx_handlers(priv);
4311
4312         /********************
4313          * 9. Conclude
4314          ********************/
4315         pci_save_state(pdev);
4316         pci_disable_device(pdev);
4317
4318         /**********************************
4319          * 10. Setup and register mac80211
4320          **********************************/
4321
4322         err = iwl_setup_mac(priv);
4323         if (err)
4324                 goto out_remove_sysfs;
4325
4326         err = iwl_dbgfs_register(priv, DRV_NAME);
4327         if (err)
4328                 IWL_ERROR("failed to create debugfs files\n");
4329
4330         err = iwl_rfkill_init(priv);
4331         if (err)
4332                 IWL_ERROR("Unable to initialize RFKILL system. "
4333                                   "Ignoring error: %d\n", err);
4334         iwl_power_initialize(priv);
4335         return 0;
4336
4337  out_remove_sysfs:
4338         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4339  out_uninit_drv:
4340         iwl_uninit_drv(priv);
4341  out_free_eeprom:
4342         iwl_eeprom_free(priv);
4343  out_iounmap:
4344         pci_iounmap(pdev, priv->hw_base);
4345  out_pci_release_regions:
4346         pci_release_regions(pdev);
4347         pci_set_drvdata(pdev, NULL);
4348  out_pci_disable_device:
4349         pci_disable_device(pdev);
4350  out_ieee80211_free_hw:
4351         ieee80211_free_hw(priv->hw);
4352  out:
4353         return err;
4354 }
4355
4356 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4357 {
4358         struct iwl_priv *priv = pci_get_drvdata(pdev);
4359         unsigned long flags;
4360
4361         if (!priv)
4362                 return;
4363
4364         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4365
4366         iwl_dbgfs_unregister(priv);
4367         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4368
4369         /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4370          * to be called and iwl4965_down since we are removing the device
4371          * we need to set STATUS_EXIT_PENDING bit.
4372          */
4373         set_bit(STATUS_EXIT_PENDING, &priv->status);
4374         if (priv->mac80211_registered) {
4375                 ieee80211_unregister_hw(priv->hw);
4376                 priv->mac80211_registered = 0;
4377         } else {
4378                 iwl4965_down(priv);
4379         }
4380
4381         /* make sure we flush any pending irq or
4382          * tasklet for the driver
4383          */
4384         spin_lock_irqsave(&priv->lock, flags);
4385         iwl4965_disable_interrupts(priv);
4386         spin_unlock_irqrestore(&priv->lock, flags);
4387
4388         iwl_synchronize_irq(priv);
4389
4390         iwl_rfkill_unregister(priv);
4391         iwl4965_dealloc_ucode_pci(priv);
4392
4393         if (priv->rxq.bd)
4394                 iwl_rx_queue_free(priv, &priv->rxq);
4395         iwl_hw_txq_ctx_free(priv);
4396
4397         iwl_clear_stations_table(priv);
4398         iwl_eeprom_free(priv);
4399
4400
4401         /*netif_stop_queue(dev); */
4402         flush_workqueue(priv->workqueue);
4403
4404         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4405          * priv->workqueue... so we can't take down the workqueue
4406          * until now... */
4407         destroy_workqueue(priv->workqueue);
4408         priv->workqueue = NULL;
4409
4410         pci_iounmap(pdev, priv->hw_base);
4411         pci_release_regions(pdev);
4412         pci_disable_device(pdev);
4413         pci_set_drvdata(pdev, NULL);
4414
4415         iwl_uninit_drv(priv);
4416
4417         if (priv->ibss_beacon)
4418                 dev_kfree_skb(priv->ibss_beacon);
4419
4420         ieee80211_free_hw(priv->hw);
4421 }
4422
4423 #ifdef CONFIG_PM
4424
4425 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4426 {
4427         struct iwl_priv *priv = pci_get_drvdata(pdev);
4428
4429         if (priv->is_open) {
4430                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4431                 iwl4965_mac_stop(priv->hw);
4432                 priv->is_open = 1;
4433         }
4434
4435         pci_set_power_state(pdev, PCI_D3hot);
4436
4437         return 0;
4438 }
4439
4440 static int iwl4965_pci_resume(struct pci_dev *pdev)
4441 {
4442         struct iwl_priv *priv = pci_get_drvdata(pdev);
4443
4444         pci_set_power_state(pdev, PCI_D0);
4445
4446         if (priv->is_open)
4447                 iwl4965_mac_start(priv->hw);
4448
4449         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4450         return 0;
4451 }
4452
4453 #endif /* CONFIG_PM */
4454
4455 /*****************************************************************************
4456  *
4457  * driver and module entry point
4458  *
4459  *****************************************************************************/
4460
4461 /* Hardware specific file defines the PCI IDs table for that hardware module */
4462 static struct pci_device_id iwl_hw_card_ids[] = {
4463 #ifdef CONFIG_IWL4965
4464         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4465         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4466 #endif /* CONFIG_IWL4965 */
4467 #ifdef CONFIG_IWL5000
4468         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4469         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4470         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4471         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4472         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4473         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4474         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4475         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4476         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4477         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4478 /* 5350 WiFi/WiMax */
4479         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4480         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4481         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4482 #endif /* CONFIG_IWL5000 */
4483         {0}
4484 };
4485 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4486
4487 static struct pci_driver iwl_driver = {
4488         .name = DRV_NAME,
4489         .id_table = iwl_hw_card_ids,
4490         .probe = iwl4965_pci_probe,
4491         .remove = __devexit_p(iwl4965_pci_remove),
4492 #ifdef CONFIG_PM
4493         .suspend = iwl4965_pci_suspend,
4494         .resume = iwl4965_pci_resume,
4495 #endif
4496 };
4497
4498 static int __init iwl4965_init(void)
4499 {
4500
4501         int ret;
4502         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4503         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4504
4505         ret = iwlagn_rate_control_register();
4506         if (ret) {
4507                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4508                 return ret;
4509         }
4510
4511         ret = pci_register_driver(&iwl_driver);
4512         if (ret) {
4513                 IWL_ERROR("Unable to initialize PCI module\n");
4514                 goto error_register;
4515         }
4516
4517         return ret;
4518
4519 error_register:
4520         iwlagn_rate_control_unregister();
4521         return ret;
4522 }
4523
4524 static void __exit iwl4965_exit(void)
4525 {
4526         pci_unregister_driver(&iwl_driver);
4527         iwlagn_rate_control_unregister();
4528 }
4529
4530 module_exit(iwl4965_exit);
4531 module_init(iwl4965_init);