git.oblomov.eu Git - 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         DECLARE_MAC_BUF(mac);
 243         int ret;
 244         bool new_assoc =
 245                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 246
 247         if (!iwl_is_alive(priv))
 248                 return -EBUSY;
 249
 250         /* always get timestamp with Rx frame */
 251         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 252         /* allow CTS-to-self if possible. this is relevant only for
 253          * 5000, but will not damage 4965 */
 254         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 255
 256         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 257         if (ret) {
 258                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 259                 return -EINVAL;
 260         }
 261
 262         /* If we don't need to send a full RXON, we can use
 263          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 264          * and other flags for the current radio configuration. */
 265         if (!iwl_full_rxon_required(priv)) {
 266                 ret = iwl_send_rxon_assoc(priv);
 267                 if (ret) {
 268                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 269                         return ret;
 270                 }
 271
 272                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 273                 return 0;
 274         }
 275
 276         /* station table will be cleared */
 277         priv->assoc_station_added = 0;
 278
 279         /* If we are currently associated and the new config requires
 280          * an RXON_ASSOC and the new config wants the associated mask enabled,
 281          * we must clear the associated from the active configuration
 282          * before we apply the new config */
 283         if (iwl_is_associated(priv) && new_assoc) {
 284                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 285                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 286
 287                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 288                                       sizeof(struct iwl_rxon_cmd),
 289                                       &priv->active_rxon);
 290
 291                 /* If the mask clearing failed then we set
 292                  * active_rxon back to what it was previously */
 293                 if (ret) {
 294                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 295                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 296                         return ret;
 297                 }
 298         }
 299
 300         IWL_DEBUG_INFO("Sending RXON\n"
 301                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 302                        "* channel = %d\n"
 303                        "* bssid = %s\n",
 304                        (new_assoc ? "" : "out"),
 305                        le16_to_cpu(priv->staging_rxon.channel),
 306                        print_mac(mac, priv->staging_rxon.bssid_addr));
 307
 308         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 309
 310         /* Apply the new configuration
 311          * RXON unassoc clears the station table in uCode, send it before
 312          * we add the bcast station. If assoc bit is set, we will send RXON
 313          * after having added the bcast and bssid station.
 314          */
 315         if (!new_assoc) {
 316                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 317                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 318                 if (ret) {
 319                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 320                         return ret;
 321                 }
 322                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 323         }
 324
 325         iwl_clear_stations_table(priv);
 326
 327         if (!priv->error_recovering)
 328                 priv->start_calib = 0;
 329
 330         /* Add the broadcast address so we can send broadcast frames */
 331         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 332                                                 IWL_INVALID_STATION) {
 333                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 334                 return -EIO;
 335         }
 336
 337         /* If we have set the ASSOC_MSK and we are in BSS mode then
 338          * add the IWL_AP_ID to the station rate table */
 339         if (new_assoc) {
 340                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 341                         ret = iwl_rxon_add_station(priv,
 342                                            priv->active_rxon.bssid_addr, 1);
 343                         if (ret == IWL_INVALID_STATION) {
 344                                 IWL_ERROR("Error adding AP address for TX.\n");
 345                                 return -EIO;
 346                         }
 347                         priv->assoc_station_added = 1;
 348                         if (priv->default_wep_key &&
 349                             iwl_send_static_wepkey_cmd(priv, 0))
 350                                 IWL_ERROR("Could not send WEP static key.\n");
 351                 }
 352
 353                 /* Apply the new configuration
 354                  * RXON assoc doesn't clear the station table in uCode,
 355                  */
 356                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 357                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 358                 if (ret) {
 359                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 360                         return ret;
 361                 }
 362                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 363         }
 364
 365         iwl_init_sensitivity(priv);
 366
 367         /* If we issue a new RXON command which required a tune then we must
 368          * send a new TXPOWER command or we won't be able to Tx any frames */
 369         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 370         if (ret) {
 371                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 372                 return ret;
 373         }
 374
 375         return 0;
 376 }
 377
 378 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 379 {
 380
 381         iwl_set_rxon_chain(priv);
 382         iwl4965_commit_rxon(priv);
 383 }
 384
 385 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 386 {
 387         struct iwl4965_bt_cmd bt_cmd = {
 388                 .flags = 3,
 389                 .lead_time = 0xAA,
 390                 .max_kill = 1,
 391                 .kill_ack_mask = 0,
 392                 .kill_cts_mask = 0,
 393         };
 394
 395         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 396                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 397 }
 398
 399 static void iwl_clear_free_frames(struct iwl_priv *priv)
 400 {
 401         struct list_head *element;
 402
 403         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 404                        priv->frames_count);
 405
 406         while (!list_empty(&priv->free_frames)) {
 407                 element = priv->free_frames.next;
 408                 list_del(element);
 409                 kfree(list_entry(element, struct iwl_frame, list));
 410                 priv->frames_count--;
 411         }
 412
 413         if (priv->frames_count) {
 414                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 415                             priv->frames_count);
 416                 priv->frames_count = 0;
 417         }
 418 }
 419
 420 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 421 {
 422         struct iwl_frame *frame;
 423         struct list_head *element;
 424         if (list_empty(&priv->free_frames)) {
 425                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 426                 if (!frame) {
 427                         IWL_ERROR("Could not allocate frame!\n");
 428                         return NULL;
 429                 }
 430
 431                 priv->frames_count++;
 432                 return frame;
 433         }
 434
 435         element = priv->free_frames.next;
 436         list_del(element);
 437         return list_entry(element, struct iwl_frame, list);
 438 }
 439
 440 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 441 {
 442         memset(frame, 0, sizeof(*frame));
 443         list_add(&frame->list, &priv->free_frames);
 444 }
 445
 446 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 447                                           struct ieee80211_hdr *hdr,
 448                                           const u8 *dest, int left)
 449 {
 450         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 451             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 452              (priv->iw_mode != NL80211_IFTYPE_AP)))
 453                 return 0;
 454
 455         if (priv->ibss_beacon->len > left)
 456                 return 0;
 457
 458         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 459
 460         return priv->ibss_beacon->len;
 461 }
 462
 463 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 464 {
 465         int i;
 466         int rate_mask;
 467
 468         /* Set rate mask*/
 469         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 470                 rate_mask = priv->active_rate_basic & 0xF;
 471         else
 472                 rate_mask = priv->active_rate_basic & 0xFF0;
 473
 474         /* Find lowest valid rate */
 475         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 476                                         i = iwl_rates[i].next_ieee) {
 477                 if (rate_mask & (1 << i))
 478                         return iwl_rates[i].plcp;
 479         }
 480
 481         /* No valid rate was found. Assign the lowest one */
 482         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 483                 return IWL_RATE_1M_PLCP;
 484         else
 485                 return IWL_RATE_6M_PLCP;
 486 }
 487
 488 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
 489                                        struct iwl_frame *frame, u8 rate)
 490 {
 491         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 492         unsigned int frame_size;
 493
 494         tx_beacon_cmd = &frame->u.beacon;
 495         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 496
 497         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 498         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 499
 500         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 501                                 iwl_bcast_addr,
 502                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 503
 504         BUG_ON(frame_size > MAX_MPDU_SIZE);
 505         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 506
 507         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 508                 tx_beacon_cmd->tx.rate_n_flags =
 509                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 510         else
 511                 tx_beacon_cmd->tx.rate_n_flags =
 512                         iwl_hw_set_rate_n_flags(rate, 0);
 513
 514         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 515                                      TX_CMD_FLG_TSF_MSK |
 516                                      TX_CMD_FLG_STA_RATE_MSK;
 517
 518         return sizeof(*tx_beacon_cmd) + frame_size;
 519 }
 520 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 521 {
 522         struct iwl_frame *frame;
 523         unsigned int frame_size;
 524         int rc;
 525         u8 rate;
 526
 527         frame = iwl_get_free_frame(priv);
 528
 529         if (!frame) {
 530                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 531                           "command.\n");
 532                 return -ENOMEM;
 533         }
 534
 535         rate = iwl4965_rate_get_lowest_plcp(priv);
 536
 537         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 538
 539         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 540                               &frame->u.cmd[0]);
 541
 542         iwl_free_frame(priv, frame);
 543
 544         return rc;
 545 }
 546
 547 /******************************************************************************
 548  *
 549  * Misc. internal state and helper functions
 550  *
 551  ******************************************************************************/
 552
 553 static void iwl4965_ht_conf(struct iwl_priv *priv,
 554                             struct ieee80211_bss_conf *bss_conf)
 555 {
 556         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 557         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 558         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 559
 560         IWL_DEBUG_MAC80211("enter: \n");
 561
 562         iwl_conf->is_ht = bss_conf->assoc_ht;
 563
 564         if (!iwl_conf->is_ht)
 565                 return;
 566
 567         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 568                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 569         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 570                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 571
 572         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 573         iwl_conf->max_amsdu_size =
 574                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 575
 576         iwl_conf->supported_chan_width =
 577                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 578         iwl_conf->extension_chan_offset =
 579                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 580         /* If no above or below channel supplied disable FAT channel */
 581         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 582             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 583                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 584                 iwl_conf->supported_chan_width = 0;
 585         }
 586
 587         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 588
 589         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 590
 591         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 592         iwl_conf->tx_chan_width =
 593                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 594         iwl_conf->ht_protection =
 595                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 596         iwl_conf->non_GF_STA_present =
 597                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 598
 599         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 600         IWL_DEBUG_MAC80211("leave\n");
 601 }
 602
 603 /*
 604  * QoS  support
 605 */
 606 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 607 {
 608         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 609                 return;
 610
 611         if (!priv->qos_data.qos_enable)
 612                 return;
 613
 614         priv->qos_data.def_qos_parm.qos_flags = 0;
 615
 616         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 617             !priv->qos_data.qos_cap.q_AP.txop_request)
 618                 priv->qos_data.def_qos_parm.qos_flags |=
 619                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 620         if (priv->qos_data.qos_active)
 621                 priv->qos_data.def_qos_parm.qos_flags |=
 622                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 623
 624         if (priv->current_ht_config.is_ht)
 625                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 626
 627         if (force || iwl_is_associated(priv)) {
 628                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 629                                 priv->qos_data.qos_active,
 630                                 priv->qos_data.def_qos_parm.qos_flags);
 631
 632                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 633                                        sizeof(struct iwl_qosparam_cmd),
 634                                        &priv->qos_data.def_qos_parm, NULL);
 635         }
 636 }
 637
 638 #define MAX_UCODE_BEACON_INTERVAL       4096
 639
 640 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 641 {
 642         u16 new_val = 0;
 643         u16 beacon_factor = 0;
 644
 645         beacon_factor =
 646             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 647                 / MAX_UCODE_BEACON_INTERVAL;
 648         new_val = beacon_val / beacon_factor;
 649
 650         return cpu_to_le16(new_val);
 651 }
 652
 653 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 654 {
 655         u64 interval_tm_unit;
 656         u64 tsf, result;
 657         unsigned long flags;
 658         struct ieee80211_conf *conf = NULL;
 659         u16 beacon_int = 0;
 660
 661         conf = ieee80211_get_hw_conf(priv->hw);
 662
 663         spin_lock_irqsave(&priv->lock, flags);
 664         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 665         priv->rxon_timing.timestamp.dw[0] =
 666                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 667
 668         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 669
 670         tsf = priv->timestamp;
 671
 672         beacon_int = priv->beacon_int;
 673         spin_unlock_irqrestore(&priv->lock, flags);
 674
 675         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 676                 if (beacon_int == 0) {
 677                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 678                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 679                 } else {
 680                         priv->rxon_timing.beacon_interval =
 681                                 cpu_to_le16(beacon_int);
 682                         priv->rxon_timing.beacon_interval =
 683                             iwl4965_adjust_beacon_interval(
 684                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 685                 }
 686
 687                 priv->rxon_timing.atim_window = 0;
 688         } else {
 689                 priv->rxon_timing.beacon_interval =
 690                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 691                 /* TODO: we need to get atim_window from upper stack
 692                  * for now we set to 0 */
 693                 priv->rxon_timing.atim_window = 0;
 694         }
 695
 696         interval_tm_unit =
 697                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 698         result = do_div(tsf, interval_tm_unit);
 699         priv->rxon_timing.beacon_init_val =
 700             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 701
 702         IWL_DEBUG_ASSOC
 703             ("beacon interval %d beacon timer %d beacon tim %d\n",
 704                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 705                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 706                 le16_to_cpu(priv->rxon_timing.atim_window));
 707 }
 708
 709 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 710                                    enum ieee80211_band band)
 711 {
 712         if (band == IEEE80211_BAND_5GHZ) {
 713                 priv->staging_rxon.flags &=
 714                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 715                       | RXON_FLG_CCK_MSK);
 716                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 717         } else {
 718                 /* Copied from iwl4965_post_associate() */
 719                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 720                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 721                 else
 722                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 723
 724                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 725                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 726
 727                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 728                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 729                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 730         }
 731 }
 732
 733 /*
 734  * initialize rxon structure with default values from eeprom
 735  */
 736 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 737 {
 738         const struct iwl_channel_info *ch_info;
 739
 740         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 741
 742         switch (priv->iw_mode) {
 743         case NL80211_IFTYPE_AP:
 744                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 745                 break;
 746
 747         case NL80211_IFTYPE_STATION:
 748                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 749                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 750                 break;
 751
 752         case NL80211_IFTYPE_ADHOC:
 753                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 754                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 755                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 756                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 757                 break;
 758
 759         case NL80211_IFTYPE_MONITOR:
 760                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 761                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 762                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 763                 break;
 764         default:
 765                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 766                 break;
 767         }
 768
 769 #if 0
 770         /* TODO:  Figure out when short_preamble would be set and cache from
 771          * that */
 772         if (!hw_to_local(priv->hw)->short_preamble)
 773                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 774         else
 775                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 776 #endif
 777
 778         ch_info = iwl_get_channel_info(priv, priv->band,
 779                                        le16_to_cpu(priv->active_rxon.channel));
 780
 781         if (!ch_info)
 782                 ch_info = &priv->channel_info[0];
 783
 784         /*
 785          * in some case A channels are all non IBSS
 786          * in this case force B/G channel
 787          */
 788         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 789             !(is_channel_ibss(ch_info)))
 790                 ch_info = &priv->channel_info[0];
 791
 792         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 793         priv->band = ch_info->band;
 794
 795         iwl_set_flags_for_band(priv, priv->band);
 796
 797         priv->staging_rxon.ofdm_basic_rates =
 798             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 799         priv->staging_rxon.cck_basic_rates =
 800             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 801
 802         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 803                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 804         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 805         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 806         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 807         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 808         iwl_set_rxon_chain(priv);
 809 }
 810
 811 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 812 {
 813         priv->iw_mode = mode;
 814
 815         iwl4965_connection_init_rx_config(priv);
 816         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 817
 818         iwl_clear_stations_table(priv);
 819
 820         /* dont commit rxon if rf-kill is on*/
 821         if (!iwl_is_ready_rf(priv))
 822                 return -EAGAIN;
 823
 824         cancel_delayed_work(&priv->scan_check);
 825         if (iwl_scan_cancel_timeout(priv, 100)) {
 826                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 827                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 828                 return -EAGAIN;
 829         }
 830
 831         iwl4965_commit_rxon(priv);
 832
 833         return 0;
 834 }
 835
 836 static void iwl4965_set_rate(struct iwl_priv *priv)
 837 {
 838         const struct ieee80211_supported_band *hw = NULL;
 839         struct ieee80211_rate *rate;
 840         int i;
 841
 842         hw = iwl_get_hw_mode(priv, priv->band);
 843         if (!hw) {
 844                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 845                 return;
 846         }
 847
 848         priv->active_rate = 0;
 849         priv->active_rate_basic = 0;
 850
 851         for (i = 0; i < hw->n_bitrates; i++) {
 852                 rate = &(hw->bitrates[i]);
 853                 if (rate->hw_value < IWL_RATE_COUNT)
 854                         priv->active_rate |= (1 << rate->hw_value);
 855         }
 856
 857         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 858                        priv->active_rate, priv->active_rate_basic);
 859
 860         /*
 861          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 862          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 863          * OFDM
 864          */
 865         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 866                 priv->staging_rxon.cck_basic_rates =
 867                     ((priv->active_rate_basic &
 868                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 869         else
 870                 priv->staging_rxon.cck_basic_rates =
 871                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 872
 873         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 874                 priv->staging_rxon.ofdm_basic_rates =
 875                     ((priv->active_rate_basic &
 876                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 877                       IWL_FIRST_OFDM_RATE) & 0xFF;
 878         else
 879                 priv->staging_rxon.ofdm_basic_rates =
 880                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 881 }
 882
 883 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 884
 885 #include "iwl-spectrum.h"
 886
 887 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 888 #define BEACON_TIME_MASK_HIGH   0xFF000000
 889 #define TIME_UNIT               1024
 890
 891 /*
 892  * extended beacon time format
 893  * time in usec will be changed into a 32-bit value in 8:24 format
 894  * the high 1 byte is the beacon counts
 895  * the lower 3 bytes is the time in usec within one beacon interval
 896  */
 897
 898 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 899 {
 900         u32 quot;
 901         u32 rem;
 902         u32 interval = beacon_interval * 1024;
 903
 904         if (!interval || !usec)
 905                 return 0;
 906
 907         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 908         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 909
 910         return (quot << 24) + rem;
 911 }
 912
 913 /* base is usually what we get from ucode with each received frame,
 914  * the same as HW timer counter counting down
 915  */
 916
 917 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 918 {
 919         u32 base_low = base & BEACON_TIME_MASK_LOW;
 920         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 921         u32 interval = beacon_interval * TIME_UNIT;
 922         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 923             (addon & BEACON_TIME_MASK_HIGH);
 924
 925         if (base_low > addon_low)
 926                 res += base_low - addon_low;
 927         else if (base_low < addon_low) {
 928                 res += interval + base_low - addon_low;
 929                 res += (1 << 24);
 930         } else
 931                 res += (1 << 24);
 932
 933         return cpu_to_le32(res);
 934 }
 935
 936 static int iwl4965_get_measurement(struct iwl_priv *priv,
 937                                struct ieee80211_measurement_params *params,
 938                                u8 type)
 939 {
 940         struct iwl4965_spectrum_cmd spectrum;
 941         struct iwl_rx_packet *res;
 942         struct iwl_host_cmd cmd = {
 943                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 944                 .data = (void *)&spectrum,
 945                 .meta.flags = CMD_WANT_SKB,
 946         };
 947         u32 add_time = le64_to_cpu(params->start_time);
 948         int rc;
 949         int spectrum_resp_status;
 950         int duration = le16_to_cpu(params->duration);
 951
 952         if (iwl_is_associated(priv))
 953                 add_time =
 954                     iwl4965_usecs_to_beacons(
 955                         le64_to_cpu(params->start_time) - priv->last_tsf,
 956                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 957
 958         memset(&spectrum, 0, sizeof(spectrum));
 959
 960         spectrum.channel_count = cpu_to_le16(1);
 961         spectrum.flags =
 962             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 963         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 964         cmd.len = sizeof(spectrum);
 965         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 966
 967         if (iwl_is_associated(priv))
 968                 spectrum.start_time =
 969                     iwl4965_add_beacon_time(priv->last_beacon_time,
 970                                 add_time,
 971                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 972         else
 973                 spectrum.start_time = 0;
 974
 975         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 976         spectrum.channels[0].channel = params->channel;
 977         spectrum.channels[0].type = type;
 978         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 979                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 980                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 981
 982         rc = iwl_send_cmd_sync(priv, &cmd);
 983         if (rc)
 984                 return rc;
 985
 986         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 987         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 988                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 989                 rc = -EIO;
 990         }
 991
 992         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 993         switch (spectrum_resp_status) {
 994         case 0:         /* Command will be handled */
 995                 if (res->u.spectrum.id != 0xff) {
 996                         IWL_DEBUG_INFO
 997                             ("Replaced existing measurement: %d\n",
 998                              res->u.spectrum.id);
 999                         priv->measurement_status &= ~MEASUREMENT_READY;
1000                 }
1001                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1002                 rc = 0;
1003                 break;
1004
1005         case 1:         /* Command will not be handled */
1006                 rc = -EAGAIN;
1007                 break;
1008         }
1009
1010         dev_kfree_skb_any(cmd.meta.u.skb);
1011
1012         return rc;
1013 }
1014 #endif
1015
1016 /******************************************************************************
1017  *
1018  * Generic RX handler implementations
1019  *
1020  ******************************************************************************/
1021 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1022                                 struct iwl_rx_mem_buffer *rxb)
1023 {
1024         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1025         struct iwl_alive_resp *palive;
1026         struct delayed_work *pwork;
1027
1028         palive = &pkt->u.alive_frame;
1029
1030         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1031                        "0x%01X 0x%01X\n",
1032                        palive->is_valid, palive->ver_type,
1033                        palive->ver_subtype);
1034
1035         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1036                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1037                 memcpy(&priv->card_alive_init,
1038                        &pkt->u.alive_frame,
1039                        sizeof(struct iwl_init_alive_resp));
1040                 pwork = &priv->init_alive_start;
1041         } else {
1042                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1043                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1044                        sizeof(struct iwl_alive_resp));
1045                 pwork = &priv->alive_start;
1046         }
1047
1048         /* We delay the ALIVE response by 5ms to
1049          * give the HW RF Kill time to activate... */
1050         if (palive->is_valid == UCODE_VALID_OK)
1051                 queue_delayed_work(priv->workqueue, pwork,
1052                                    msecs_to_jiffies(5));
1053         else
1054                 IWL_WARNING("uCode did not respond OK.\n");
1055 }
1056
1057 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1058                                    struct iwl_rx_mem_buffer *rxb)
1059 {
1060         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061
1062         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1063                 "seq 0x%04X ser 0x%08X\n",
1064                 le32_to_cpu(pkt->u.err_resp.error_type),
1065                 get_cmd_string(pkt->u.err_resp.cmd_id),
1066                 pkt->u.err_resp.cmd_id,
1067                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1068                 le32_to_cpu(pkt->u.err_resp.error_info));
1069 }
1070
1071 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1072
1073 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1074 {
1075         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1076         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1077         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1078         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1079                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1080         rxon->channel = csa->channel;
1081         priv->staging_rxon.channel = csa->channel;
1082 }
1083
1084 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1085                                           struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1088         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1090
1091         if (!report->state) {
1092                 IWL_DEBUG(IWL_DL_11H,
1093                         "Spectrum Measure Notification: Start\n");
1094                 return;
1095         }
1096
1097         memcpy(&priv->measure_report, report, sizeof(*report));
1098         priv->measurement_status |= MEASUREMENT_READY;
1099 #endif
1100 }
1101
1102 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1103                                       struct iwl_rx_mem_buffer *rxb)
1104 {
1105 #ifdef CONFIG_IWLWIFI_DEBUG
1106         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1107         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1108         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1109                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1110 #endif
1111 }
1112
1113 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1114                                              struct iwl_rx_mem_buffer *rxb)
1115 {
1116         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1117         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1118                         "notification for %s:\n",
1119                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1120         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1121 }
1122
1123 static void iwl4965_bg_beacon_update(struct work_struct *work)
1124 {
1125         struct iwl_priv *priv =
1126                 container_of(work, struct iwl_priv, beacon_update);
1127         struct sk_buff *beacon;
1128
1129         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1130         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1131
1132         if (!beacon) {
1133                 IWL_ERROR("update beacon failed\n");
1134                 return;
1135         }
1136
1137         mutex_lock(&priv->mutex);
1138         /* new beacon skb is allocated every time; dispose previous.*/
1139         if (priv->ibss_beacon)
1140                 dev_kfree_skb(priv->ibss_beacon);
1141
1142         priv->ibss_beacon = beacon;
1143         mutex_unlock(&priv->mutex);
1144
1145         iwl4965_send_beacon_cmd(priv);
1146 }
1147
1148 /**
1149  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1150  *
1151  * This callback is provided in order to send a statistics request.
1152  *
1153  * This timer function is continually reset to execute within
1154  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1155  * was received.  We need to ensure we receive the statistics in order
1156  * to update the temperature used for calibrating the TXPOWER.
1157  */
1158 static void iwl4965_bg_statistics_periodic(unsigned long data)
1159 {
1160         struct iwl_priv *priv = (struct iwl_priv *)data;
1161
1162         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1163                 return;
1164
1165         iwl_send_statistics_request(priv, CMD_ASYNC);
1166 }
1167
1168 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1169                                 struct iwl_rx_mem_buffer *rxb)
1170 {
1171 #ifdef CONFIG_IWLWIFI_DEBUG
1172         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1173         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1174         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1175
1176         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1177                 "tsf %d %d rate %d\n",
1178                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1179                 beacon->beacon_notify_hdr.failure_frame,
1180                 le32_to_cpu(beacon->ibss_mgr_status),
1181                 le32_to_cpu(beacon->high_tsf),
1182                 le32_to_cpu(beacon->low_tsf), rate);
1183 #endif
1184
1185         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1186             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1187                 queue_work(priv->workqueue, &priv->beacon_update);
1188 }
1189
1190 /* Handle notification from uCode that card's power state is changing
1191  * due to software, hardware, or critical temperature RFKILL */
1192 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1193                                     struct iwl_rx_mem_buffer *rxb)
1194 {
1195         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1196         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1197         unsigned long status = priv->status;
1198
1199         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1200                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1201                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1202
1203         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1204                      RF_CARD_DISABLED)) {
1205
1206                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1207                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1208
1209                 if (!iwl_grab_nic_access(priv)) {
1210                         iwl_write_direct32(
1211                                 priv, HBUS_TARG_MBX_C,
1212                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1213
1214                         iwl_release_nic_access(priv);
1215                 }
1216
1217                 if (!(flags & RXON_CARD_DISABLED)) {
1218                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1219                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1220                         if (!iwl_grab_nic_access(priv)) {
1221                                 iwl_write_direct32(
1222                                         priv, HBUS_TARG_MBX_C,
1223                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1224
1225                                 iwl_release_nic_access(priv);
1226                         }
1227                 }
1228
1229                 if (flags & RF_CARD_DISABLED) {
1230                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1231                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1232                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1233                         if (!iwl_grab_nic_access(priv))
1234                                 iwl_release_nic_access(priv);
1235                 }
1236         }
1237
1238         if (flags & HW_CARD_DISABLED)
1239                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1240         else
1241                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1242
1243
1244         if (flags & SW_CARD_DISABLED)
1245                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1246         else
1247                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1248
1249         if (!(flags & RXON_CARD_DISABLED))
1250                 iwl_scan_cancel(priv);
1251
1252         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1253              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1254             (test_bit(STATUS_RF_KILL_SW, &status) !=
1255              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1256                 queue_work(priv->workqueue, &priv->rf_kill);
1257         else
1258                 wake_up_interruptible(&priv->wait_command_queue);
1259 }
1260
1261 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1262 {
1263         int ret;
1264         unsigned long flags;
1265
1266         spin_lock_irqsave(&priv->lock, flags);
1267         ret = iwl_grab_nic_access(priv);
1268         if (ret)
1269                 goto err;
1270
1271         if (src == IWL_PWR_SRC_VAUX) {
1272                 u32 val;
1273                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1274                                             &val);
1275
1276                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1277                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1278                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1279                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1280         } else {
1281                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1283                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1284         }
1285
1286         iwl_release_nic_access(priv);
1287 err:
1288         spin_unlock_irqrestore(&priv->lock, flags);
1289         return ret;
1290 }
1291
1292 /**
1293  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1294  *
1295  * Setup the RX handlers for each of the reply types sent from the uCode
1296  * to the host.
1297  *
1298  * This function chains into the hardware specific files for them to setup
1299  * any hardware specific handlers as well.
1300  */
1301 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1302 {
1303         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1304         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1305         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1306         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1307             iwl4965_rx_spectrum_measure_notif;
1308         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1309         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1310             iwl4965_rx_pm_debug_statistics_notif;
1311         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1312
1313         /*
1314          * The same handler is used for both the REPLY to a discrete
1315          * statistics request from the host as well as for the periodic
1316          * statistics notifications (after received beacons) from the uCode.
1317          */
1318         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1319         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1320
1321         iwl_setup_rx_scan_handlers(priv);
1322
1323         /* status change handler */
1324         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1325
1326         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1327             iwl_rx_missed_beacon_notif;
1328         /* Rx handlers */
1329         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1330         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1331         /* block ack */
1332         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1333         /* Set up hardware specific Rx handlers */
1334         priv->cfg->ops->lib->rx_handler_setup(priv);
1335 }
1336
1337 /*
1338  * this should be called while priv->lock is locked
1339 */
1340 static void __iwl_rx_replenish(struct iwl_priv *priv)
1341 {
1342         iwl_rx_allocate(priv);
1343         iwl_rx_queue_restock(priv);
1344 }
1345
1346
1347 /**
1348  * iwl_rx_handle - Main entry function for receiving responses from uCode
1349  *
1350  * Uses the priv->rx_handlers callback function array to invoke
1351  * the appropriate handlers, including command responses,
1352  * frame-received notifications, and other notifications.
1353  */
1354 void iwl_rx_handle(struct iwl_priv *priv)
1355 {
1356         struct iwl_rx_mem_buffer *rxb;
1357         struct iwl_rx_packet *pkt;
1358         struct iwl_rx_queue *rxq = &priv->rxq;
1359         u32 r, i;
1360         int reclaim;
1361         unsigned long flags;
1362         u8 fill_rx = 0;
1363         u32 count = 8;
1364
1365         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1366          * buffer that the driver may process (last buffer filled by ucode). */
1367         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1368         i = rxq->read;
1369
1370         /* Rx interrupt, but nothing sent from uCode */
1371         if (i == r)
1372                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1373
1374         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1375                 fill_rx = 1;
1376
1377         while (i != r) {
1378                 rxb = rxq->queue[i];
1379
1380                 /* If an RXB doesn't have a Rx queue slot associated with it,
1381                  * then a bug has been introduced in the queue refilling
1382                  * routines -- catch it here */
1383                 BUG_ON(rxb == NULL);
1384
1385                 rxq->queue[i] = NULL;
1386
1387                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->aligned_dma_addr,
1388                                             priv->hw_params.rx_buf_size,
1389                                             PCI_DMA_FROMDEVICE);
1390                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1391
1392                 /* Reclaim a command buffer only if this packet is a response
1393                  *   to a (driver-originated) command.
1394                  * If the packet (e.g. Rx frame) originated from uCode,
1395                  *   there is no command buffer to reclaim.
1396                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1397                  *   but apparently a few don't get set; catch them here. */
1398                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1399                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1400                         (pkt->hdr.cmd != REPLY_RX) &&
1401                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1402                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1403                         (pkt->hdr.cmd != REPLY_TX);
1404
1405                 /* Based on type of command response or notification,
1406                  *   handle those that need handling via function in
1407                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1408                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1409                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1410                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1411                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1412                 } else {
1413                         /* No handling needed */
1414                         IWL_DEBUG(IWL_DL_RX,
1415                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1416                                 r, i, get_cmd_string(pkt->hdr.cmd),
1417                                 pkt->hdr.cmd);
1418                 }
1419
1420                 if (reclaim) {
1421                         /* Invoke any callbacks, transfer the skb to caller, and
1422                          * fire off the (possibly) blocking iwl_send_cmd()
1423                          * as we reclaim the driver command queue */
1424                         if (rxb && rxb->skb)
1425                                 iwl_tx_cmd_complete(priv, rxb);
1426                         else
1427                                 IWL_WARNING("Claim null rxb?\n");
1428                 }
1429
1430                 /* For now we just don't re-use anything.  We can tweak this
1431                  * later to try and re-use notification packets and SKBs that
1432                  * fail to Rx correctly */
1433                 if (rxb->skb != NULL) {
1434                         priv->alloc_rxb_skb--;
1435                         dev_kfree_skb_any(rxb->skb);
1436                         rxb->skb = NULL;
1437                 }
1438
1439                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1440                                  priv->hw_params.rx_buf_size + 256,
1441                                  PCI_DMA_FROMDEVICE);
1442                 spin_lock_irqsave(&rxq->lock, flags);
1443                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1444                 spin_unlock_irqrestore(&rxq->lock, flags);
1445                 i = (i + 1) & RX_QUEUE_MASK;
1446                 /* If there are a lot of unused frames,
1447                  * restock the Rx queue so ucode wont assert. */
1448                 if (fill_rx) {
1449                         count++;
1450                         if (count >= 8) {
1451                                 priv->rxq.read = i;
1452                                 __iwl_rx_replenish(priv);
1453                                 count = 0;
1454                         }
1455                 }
1456         }
1457
1458         /* Backtrack one entry */
1459         priv->rxq.read = i;
1460         iwl_rx_queue_restock(priv);
1461 }
1462
1463 #ifdef CONFIG_IWLWIFI_DEBUG
1464 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1465 {
1466         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1467         DECLARE_MAC_BUF(mac);
1468
1469         IWL_DEBUG_RADIO("RX CONFIG:\n");
1470         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1471         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1472         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1473         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1474                         le32_to_cpu(rxon->filter_flags));
1475         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1476         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1477                         rxon->ofdm_basic_rates);
1478         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1479         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1480                         print_mac(mac, rxon->node_addr));
1481         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1482                         print_mac(mac, rxon->bssid_addr));
1483         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1484 }
1485 #endif
1486
1487 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1488 {
1489         IWL_DEBUG_ISR("Enabling interrupts\n");
1490         set_bit(STATUS_INT_ENABLED, &priv->status);
1491         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1492 }
1493
1494 /* call this function to flush any scheduled tasklet */
1495 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1496 {
1497         /* wait to make sure we flush pedding tasklet*/
1498         synchronize_irq(priv->pci_dev->irq);
1499         tasklet_kill(&priv->irq_tasklet);
1500 }
1501
1502 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1503 {
1504         clear_bit(STATUS_INT_ENABLED, &priv->status);
1505
1506         /* disable interrupts from uCode/NIC to host */
1507         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1508
1509         /* acknowledge/clear/reset any interrupts still pending
1510          * from uCode or flow handler (Rx/Tx DMA) */
1511         iwl_write32(priv, CSR_INT, 0xffffffff);
1512         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1513         IWL_DEBUG_ISR("Disabled interrupts\n");
1514 }
1515
1516
1517 /**
1518  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1519  */
1520 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1521 {
1522         /* Set the FW error flag -- cleared on iwl4965_down */
1523         set_bit(STATUS_FW_ERROR, &priv->status);
1524
1525         /* Cancel currently queued command. */
1526         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1527
1528 #ifdef CONFIG_IWLWIFI_DEBUG
1529         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1530                 iwl_dump_nic_error_log(priv);
1531                 iwl_dump_nic_event_log(priv);
1532                 iwl4965_print_rx_config_cmd(priv);
1533         }
1534 #endif
1535
1536         wake_up_interruptible(&priv->wait_command_queue);
1537
1538         /* Keep the restart process from trying to send host
1539          * commands by clearing the INIT status bit */
1540         clear_bit(STATUS_READY, &priv->status);
1541
1542         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1543                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1544                           "Restarting adapter due to uCode error.\n");
1545
1546                 if (iwl_is_associated(priv)) {
1547                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1548                                sizeof(priv->recovery_rxon));
1549                         priv->error_recovering = 1;
1550                 }
1551                 if (priv->cfg->mod_params->restart_fw)
1552                         queue_work(priv->workqueue, &priv->restart);
1553         }
1554 }
1555
1556 static void iwl4965_error_recovery(struct iwl_priv *priv)
1557 {
1558         unsigned long flags;
1559
1560         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1561                sizeof(priv->staging_rxon));
1562         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1563         iwl4965_commit_rxon(priv);
1564
1565         iwl_rxon_add_station(priv, priv->bssid, 1);
1566
1567         spin_lock_irqsave(&priv->lock, flags);
1568         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1569         priv->error_recovering = 0;
1570         spin_unlock_irqrestore(&priv->lock, flags);
1571 }
1572
1573 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1574 {
1575         u32 inta, handled = 0;
1576         u32 inta_fh;
1577         unsigned long flags;
1578 #ifdef CONFIG_IWLWIFI_DEBUG
1579         u32 inta_mask;
1580 #endif
1581
1582         spin_lock_irqsave(&priv->lock, flags);
1583
1584         /* Ack/clear/reset pending uCode interrupts.
1585          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1586          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1587         inta = iwl_read32(priv, CSR_INT);
1588         iwl_write32(priv, CSR_INT, inta);
1589
1590         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1591          * Any new interrupts that happen after this, either while we're
1592          * in this tasklet, or later, will show up in next ISR/tasklet. */
1593         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1594         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1595
1596 #ifdef CONFIG_IWLWIFI_DEBUG
1597         if (priv->debug_level & IWL_DL_ISR) {
1598                 /* just for debug */
1599                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1600                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1601                               inta, inta_mask, inta_fh);
1602         }
1603 #endif
1604
1605         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1606          * atomic, make sure that inta covers all the interrupts that
1607          * we've discovered, even if FH interrupt came in just after
1608          * reading CSR_INT. */
1609         if (inta_fh & CSR49_FH_INT_RX_MASK)
1610                 inta |= CSR_INT_BIT_FH_RX;
1611         if (inta_fh & CSR49_FH_INT_TX_MASK)
1612                 inta |= CSR_INT_BIT_FH_TX;
1613
1614         /* Now service all interrupt bits discovered above. */
1615         if (inta & CSR_INT_BIT_HW_ERR) {
1616                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1617
1618                 /* Tell the device to stop sending interrupts */
1619                 iwl4965_disable_interrupts(priv);
1620
1621                 iwl4965_irq_handle_error(priv);
1622
1623                 handled |= CSR_INT_BIT_HW_ERR;
1624
1625                 spin_unlock_irqrestore(&priv->lock, flags);
1626
1627                 return;
1628         }
1629
1630 #ifdef CONFIG_IWLWIFI_DEBUG
1631         if (priv->debug_level & (IWL_DL_ISR)) {
1632                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1633                 if (inta & CSR_INT_BIT_SCD)
1634                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1635                                       "the frame/frames.\n");
1636
1637                 /* Alive notification via Rx interrupt will do the real work */
1638                 if (inta & CSR_INT_BIT_ALIVE)
1639                         IWL_DEBUG_ISR("Alive interrupt\n");
1640         }
1641 #endif
1642         /* Safely ignore these bits for debug checks below */
1643         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1644
1645         /* HW RF KILL switch toggled */
1646         if (inta & CSR_INT_BIT_RF_KILL) {
1647                 int hw_rf_kill = 0;
1648                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1649                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1650                         hw_rf_kill = 1;
1651
1652                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1653                                 hw_rf_kill ? "disable radio":"enable radio");
1654
1655                 /* driver only loads ucode once setting the interface up.
1656                  * the driver as well won't allow loading if RFKILL is set
1657                  * therefore no need to restart the driver from this handler
1658                  */
1659                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1660                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1661
1662                 handled |= CSR_INT_BIT_RF_KILL;
1663         }
1664
1665         /* Chip got too hot and stopped itself */
1666         if (inta & CSR_INT_BIT_CT_KILL) {
1667                 IWL_ERROR("Microcode CT kill error detected.\n");
1668                 handled |= CSR_INT_BIT_CT_KILL;
1669         }
1670
1671         /* Error detected by uCode */
1672         if (inta & CSR_INT_BIT_SW_ERR) {
1673                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1674                           inta);
1675                 iwl4965_irq_handle_error(priv);
1676                 handled |= CSR_INT_BIT_SW_ERR;
1677         }
1678
1679         /* uCode wakes up after power-down sleep */
1680         if (inta & CSR_INT_BIT_WAKEUP) {
1681                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1682                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1683                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1684                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1685                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1686                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1687                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1688                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1689
1690                 handled |= CSR_INT_BIT_WAKEUP;
1691         }
1692
1693         /* All uCode command responses, including Tx command responses,
1694          * Rx "responses" (frame-received notification), and other
1695          * notifications from uCode come through here*/
1696         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1697                 iwl_rx_handle(priv);
1698                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1699         }
1700
1701         if (inta & CSR_INT_BIT_FH_TX) {
1702                 IWL_DEBUG_ISR("Tx interrupt\n");
1703                 handled |= CSR_INT_BIT_FH_TX;
1704                 /* FH finished to write, send event */
1705                 priv->ucode_write_complete = 1;
1706                 wake_up_interruptible(&priv->wait_command_queue);
1707         }
1708
1709         if (inta & ~handled)
1710                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1711
1712         if (inta & ~CSR_INI_SET_MASK) {
1713                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1714                          inta & ~CSR_INI_SET_MASK);
1715                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1716         }
1717
1718         /* Re-enable all interrupts */
1719         /* only Re-enable if diabled by irq */
1720         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1721                 iwl4965_enable_interrupts(priv);
1722
1723 #ifdef CONFIG_IWLWIFI_DEBUG
1724         if (priv->debug_level & (IWL_DL_ISR)) {
1725                 inta = iwl_read32(priv, CSR_INT);
1726                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1727                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1728                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1729                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1730         }
1731 #endif
1732         spin_unlock_irqrestore(&priv->lock, flags);
1733 }
1734
1735 static irqreturn_t iwl4965_isr(int irq, void *data)
1736 {
1737         struct iwl_priv *priv = data;
1738         u32 inta, inta_mask;
1739         u32 inta_fh;
1740         if (!priv)
1741                 return IRQ_NONE;
1742
1743         spin_lock(&priv->lock);
1744
1745         /* Disable (but don't clear!) interrupts here to avoid
1746          *    back-to-back ISRs and sporadic interrupts from our NIC.
1747          * If we have something to service, the tasklet will re-enable ints.
1748          * If we *don't* have something, we'll re-enable before leaving here. */
1749         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1750         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1751
1752         /* Discover which interrupts are active/pending */
1753         inta = iwl_read32(priv, CSR_INT);
1754         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1755
1756         /* Ignore interrupt if there's nothing in NIC to service.
1757          * This may be due to IRQ shared with another device,
1758          * or due to sporadic interrupts thrown from our NIC. */
1759         if (!inta && !inta_fh) {
1760                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1761                 goto none;
1762         }
1763
1764         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1765                 /* Hardware disappeared. It might have already raised
1766                  * an interrupt */
1767                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1768                 goto unplugged;
1769         }
1770
1771         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1772                       inta, inta_mask, inta_fh);
1773
1774         inta &= ~CSR_INT_BIT_SCD;
1775
1776         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1777         if (likely(inta || inta_fh))
1778                 tasklet_schedule(&priv->irq_tasklet);
1779
1780  unplugged:
1781         spin_unlock(&priv->lock);
1782         return IRQ_HANDLED;
1783
1784  none:
1785         /* re-enable interrupts here since we don't have anything to service. */
1786         /* only Re-enable if diabled by irq */
1787         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1788                 iwl4965_enable_interrupts(priv);
1789         spin_unlock(&priv->lock);
1790         return IRQ_NONE;
1791 }
1792
1793 /******************************************************************************
1794  *
1795  * uCode download functions
1796  *
1797  ******************************************************************************/
1798
1799 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1800 {
1801         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1802         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1803         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1804         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1805         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1806         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1807 }
1808
1809 static void iwl4965_nic_start(struct iwl_priv *priv)
1810 {
1811         /* Remove all resets to allow NIC to operate */
1812         iwl_write32(priv, CSR_RESET, 0);
1813 }
1814
1815
1816 /**
1817  * iwl4965_read_ucode - Read uCode images from disk file.
1818  *
1819  * Copy into buffers for card to fetch via bus-mastering
1820  */
1821 static int iwl4965_read_ucode(struct iwl_priv *priv)
1822 {
1823         struct iwl_ucode *ucode;
1824         int ret;
1825         const struct firmware *ucode_raw;
1826         const char *name = priv->cfg->fw_name;
1827         u8 *src;
1828         size_t len;
1829         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1830
1831         /* Ask kernel firmware_class module to get the boot firmware off disk.
1832          * request_firmware() is synchronous, file is in memory on return. */
1833         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1834         if (ret < 0) {
1835                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1836                                         name, ret);
1837                 goto error;
1838         }
1839
1840         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1841                        name, ucode_raw->size);
1842
1843         /* Make sure that we got at least our header! */
1844         if (ucode_raw->size < sizeof(*ucode)) {
1845                 IWL_ERROR("File size way too small!\n");
1846                 ret = -EINVAL;
1847                 goto err_release;
1848         }
1849
1850         /* Data from ucode file:  header followed by uCode images */
1851         ucode = (void *)ucode_raw->data;
1852
1853         ver = le32_to_cpu(ucode->ver);
1854         inst_size = le32_to_cpu(ucode->inst_size);
1855         data_size = le32_to_cpu(ucode->data_size);
1856         init_size = le32_to_cpu(ucode->init_size);
1857         init_data_size = le32_to_cpu(ucode->init_data_size);
1858         boot_size = le32_to_cpu(ucode->boot_size);
1859
1860         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1861         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1862                        inst_size);
1863         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1864                        data_size);
1865         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1866                        init_size);
1867         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1868                        init_data_size);
1869         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1870                        boot_size);
1871
1872         /* Verify size of file vs. image size info in file's header */
1873         if (ucode_raw->size < sizeof(*ucode) +
1874                 inst_size + data_size + init_size +
1875                 init_data_size + boot_size) {
1876
1877                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1878                                (int)ucode_raw->size);
1879                 ret = -EINVAL;
1880                 goto err_release;
1881         }
1882
1883         /* Verify that uCode images will fit in card's SRAM */
1884         if (inst_size > priv->hw_params.max_inst_size) {
1885                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1886                                inst_size);
1887                 ret = -EINVAL;
1888                 goto err_release;
1889         }
1890
1891         if (data_size > priv->hw_params.max_data_size) {
1892                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1893                                 data_size);
1894                 ret = -EINVAL;
1895                 goto err_release;
1896         }
1897         if (init_size > priv->hw_params.max_inst_size) {
1898                 IWL_DEBUG_INFO
1899                     ("uCode init instr len %d too large to fit in\n",
1900                       init_size);
1901                 ret = -EINVAL;
1902                 goto err_release;
1903         }
1904         if (init_data_size > priv->hw_params.max_data_size) {
1905                 IWL_DEBUG_INFO
1906                     ("uCode init data len %d too large to fit in\n",
1907                       init_data_size);
1908                 ret = -EINVAL;
1909                 goto err_release;
1910         }
1911         if (boot_size > priv->hw_params.max_bsm_size) {
1912                 IWL_DEBUG_INFO
1913                     ("uCode boot instr len %d too large to fit in\n",
1914                       boot_size);
1915                 ret = -EINVAL;
1916                 goto err_release;
1917         }
1918
1919         /* Allocate ucode buffers for card's bus-master loading ... */
1920
1921         /* Runtime instructions and 2 copies of data:
1922          * 1) unmodified from disk
1923          * 2) backup cache for save/restore during power-downs */
1924         priv->ucode_code.len = inst_size;
1925         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1926
1927         priv->ucode_data.len = data_size;
1928         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1929
1930         priv->ucode_data_backup.len = data_size;
1931         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1932
1933         /* Initialization instructions and data */
1934         if (init_size && init_data_size) {
1935                 priv->ucode_init.len = init_size;
1936                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1937
1938                 priv->ucode_init_data.len = init_data_size;
1939                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1940
1941                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1942                         goto err_pci_alloc;
1943         }
1944
1945         /* Bootstrap (instructions only, no data) */
1946         if (boot_size) {
1947                 priv->ucode_boot.len = boot_size;
1948                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1949
1950                 if (!priv->ucode_boot.v_addr)
1951                         goto err_pci_alloc;
1952         }
1953
1954         /* Copy images into buffers for card's bus-master reads ... */
1955
1956         /* Runtime instructions (first block of data in file) */
1957         src = &ucode->data[0];
1958         len = priv->ucode_code.len;
1959         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1960         memcpy(priv->ucode_code.v_addr, src, len);
1961         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1962                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1963
1964         /* Runtime data (2nd block)
1965          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1966         src = &ucode->data[inst_size];
1967         len = priv->ucode_data.len;
1968         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1969         memcpy(priv->ucode_data.v_addr, src, len);
1970         memcpy(priv->ucode_data_backup.v_addr, src, len);
1971
1972         /* Initialization instructions (3rd block) */
1973         if (init_size) {
1974                 src = &ucode->data[inst_size + data_size];
1975                 len = priv->ucode_init.len;
1976                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1977                                 len);
1978                 memcpy(priv->ucode_init.v_addr, src, len);
1979         }
1980
1981         /* Initialization data (4th block) */
1982         if (init_data_size) {
1983                 src = &ucode->data[inst_size + data_size + init_size];
1984                 len = priv->ucode_init_data.len;
1985                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1986                                len);
1987                 memcpy(priv->ucode_init_data.v_addr, src, len);
1988         }
1989
1990         /* Bootstrap instructions (5th block) */
1991         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1992         len = priv->ucode_boot.len;
1993         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1994         memcpy(priv->ucode_boot.v_addr, src, len);
1995
1996         /* We have our copies now, allow OS release its copies */
1997         release_firmware(ucode_raw);
1998         return 0;
1999
2000  err_pci_alloc:
2001         IWL_ERROR("failed to allocate pci memory\n");
2002         ret = -ENOMEM;
2003         iwl4965_dealloc_ucode_pci(priv);
2004
2005  err_release:
2006         release_firmware(ucode_raw);
2007
2008  error:
2009         return ret;
2010 }
2011
2012 /**
2013  * iwl_alive_start - called after REPLY_ALIVE notification received
2014  *                   from protocol/runtime uCode (initialization uCode's
2015  *                   Alive gets handled by iwl_init_alive_start()).
2016  */
2017 static void iwl_alive_start(struct iwl_priv *priv)
2018 {
2019         int ret = 0;
2020
2021         IWL_DEBUG_INFO("Runtime Alive received.\n");
2022
2023         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2024                 /* We had an error bringing up the hardware, so take it
2025                  * all the way back down so we can try again */
2026                 IWL_DEBUG_INFO("Alive failed.\n");
2027                 goto restart;
2028         }
2029
2030         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2031          * This is a paranoid check, because we would not have gotten the
2032          * "runtime" alive if code weren't properly loaded.  */
2033         if (iwl_verify_ucode(priv)) {
2034                 /* Runtime instruction load was bad;
2035                  * take it all the way back down so we can try again */
2036                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2037                 goto restart;
2038         }
2039
2040         iwl_clear_stations_table(priv);
2041         ret = priv->cfg->ops->lib->alive_notify(priv);
2042         if (ret) {
2043                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2044                             ret);
2045                 goto restart;
2046         }
2047
2048         /* After the ALIVE response, we can send host commands to 4965 uCode */
2049         set_bit(STATUS_ALIVE, &priv->status);
2050
2051         if (iwl_is_rfkill(priv))
2052                 return;
2053
2054         ieee80211_wake_queues(priv->hw);
2055
2056         priv->active_rate = priv->rates_mask;
2057         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2058
2059         if (iwl_is_associated(priv)) {
2060                 struct iwl_rxon_cmd *active_rxon =
2061                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2062
2063                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2064                        sizeof(priv->staging_rxon));
2065                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2066         } else {
2067                 /* Initialize our rx_config data */
2068                 iwl4965_connection_init_rx_config(priv);
2069                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2070         }
2071
2072         /* Configure Bluetooth device coexistence support */
2073         iwl4965_send_bt_config(priv);
2074
2075         iwl_reset_run_time_calib(priv);
2076
2077         /* Configure the adapter for unassociated operation */
2078         iwl4965_commit_rxon(priv);
2079
2080         /* At this point, the NIC is initialized and operational */
2081         iwl_rf_kill_ct_config(priv);
2082
2083         iwl_leds_register(priv);
2084
2085         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2086         set_bit(STATUS_READY, &priv->status);
2087         wake_up_interruptible(&priv->wait_command_queue);
2088
2089         if (priv->error_recovering)
2090                 iwl4965_error_recovery(priv);
2091
2092         iwl_power_update_mode(priv, 1);
2093
2094         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2095                 iwl4965_set_mode(priv, priv->iw_mode);
2096
2097         return;
2098
2099  restart:
2100         queue_work(priv->workqueue, &priv->restart);
2101 }
2102
2103 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2104
2105 static void __iwl4965_down(struct iwl_priv *priv)
2106 {
2107         unsigned long flags;
2108         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2109
2110         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2111
2112         if (!exit_pending)
2113                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2114
2115         iwl_leds_unregister(priv);
2116
2117         iwl_clear_stations_table(priv);
2118
2119         /* Unblock any waiting calls */
2120         wake_up_interruptible_all(&priv->wait_command_queue);
2121
2122         /* Wipe out the EXIT_PENDING status bit if we are not actually
2123          * exiting the module */
2124         if (!exit_pending)
2125                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2126
2127         /* stop and reset the on-board processor */
2128         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2129
2130         /* tell the device to stop sending interrupts */
2131         spin_lock_irqsave(&priv->lock, flags);
2132         iwl4965_disable_interrupts(priv);
2133         spin_unlock_irqrestore(&priv->lock, flags);
2134         iwl_synchronize_irq(priv);
2135
2136         if (priv->mac80211_registered)
2137                 ieee80211_stop_queues(priv->hw);
2138
2139         /* If we have not previously called iwl4965_init() then
2140          * clear all bits but the RF Kill and SUSPEND bits and return */
2141         if (!iwl_is_init(priv)) {
2142                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2143                                         STATUS_RF_KILL_HW |
2144                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2145                                         STATUS_RF_KILL_SW |
2146                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2147                                         STATUS_GEO_CONFIGURED |
2148                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2149                                         STATUS_IN_SUSPEND |
2150                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2151                                         STATUS_EXIT_PENDING;
2152                 goto exit;
2153         }
2154
2155         /* ...otherwise clear out all the status bits but the RF Kill and
2156          * SUSPEND bits and continue taking the NIC down. */
2157         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2158                                 STATUS_RF_KILL_HW |
2159                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2160                                 STATUS_RF_KILL_SW |
2161                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2162                                 STATUS_GEO_CONFIGURED |
2163                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2164                                 STATUS_IN_SUSPEND |
2165                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2166                                 STATUS_FW_ERROR |
2167                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2168                                 STATUS_EXIT_PENDING;
2169
2170         spin_lock_irqsave(&priv->lock, flags);
2171         iwl_clear_bit(priv, CSR_GP_CNTRL,
2172                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2173         spin_unlock_irqrestore(&priv->lock, flags);
2174
2175         iwl_txq_ctx_stop(priv);
2176         iwl_rxq_stop(priv);
2177
2178         spin_lock_irqsave(&priv->lock, flags);
2179         if (!iwl_grab_nic_access(priv)) {
2180                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2181                                          APMG_CLK_VAL_DMA_CLK_RQT);
2182                 iwl_release_nic_access(priv);
2183         }
2184         spin_unlock_irqrestore(&priv->lock, flags);
2185
2186         udelay(5);
2187
2188         /* FIXME: apm_ops.suspend(priv) */
2189         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2190                 priv->cfg->ops->lib->apm_ops.stop(priv);
2191         else
2192                 priv->cfg->ops->lib->apm_ops.reset(priv);
2193         priv->cfg->ops->lib->free_shared_mem(priv);
2194
2195  exit:
2196         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2197
2198         if (priv->ibss_beacon)
2199                 dev_kfree_skb(priv->ibss_beacon);
2200         priv->ibss_beacon = NULL;
2201
2202         /* clear out any free frames */
2203         iwl_clear_free_frames(priv);
2204 }
2205
2206 static void iwl4965_down(struct iwl_priv *priv)
2207 {
2208         mutex_lock(&priv->mutex);
2209         __iwl4965_down(priv);
2210         mutex_unlock(&priv->mutex);
2211
2212         iwl_cancel_deferred_work(priv);
2213 }
2214
2215 #define MAX_HW_RESTARTS 5
2216
2217 static int __iwl4965_up(struct iwl_priv *priv)
2218 {
2219         int i;
2220         int ret;
2221
2222         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2223                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2224                 return -EIO;
2225         }
2226
2227         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2228                 IWL_ERROR("ucode not available for device bringup\n");
2229                 return -EIO;
2230         }
2231
2232         /* If platform's RF_KILL switch is NOT set to KILL */
2233         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2234                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2235         else
2236                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2237
2238         if (iwl_is_rfkill(priv)) {
2239                 iwl4965_enable_interrupts(priv);
2240                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2241                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2242                 return 0;
2243         }
2244
2245         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2246
2247         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2248         if (ret) {
2249                 IWL_ERROR("Unable to allocate shared memory\n");
2250                 return ret;
2251         }
2252
2253         ret = iwl_hw_nic_init(priv);
2254         if (ret) {
2255                 IWL_ERROR("Unable to init nic\n");
2256                 return ret;
2257         }
2258
2259         /* 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,
2262                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2263
2264         /* clear (again), then enable host interrupts */
2265         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2266         iwl4965_enable_interrupts(priv);
2267
2268         /* really make sure rfkill handshake bits are cleared */
2269         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2270         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2271
2272         /* Copy original ucode data image from disk into backup cache.
2273          * This will be used to initialize the on-board processor's
2274          * data SRAM for a clean start when the runtime program first loads. */
2275         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2276                priv->ucode_data.len);
2277
2278         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2279
2280                 iwl_clear_stations_table(priv);
2281
2282                 /* load bootstrap state machine,
2283                  * load bootstrap program into processor's memory,
2284                  * prepare to load the "initialize" uCode */
2285                 ret = priv->cfg->ops->lib->load_ucode(priv);
2286
2287                 if (ret) {
2288                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2289                         continue;
2290                 }
2291
2292                 /* Clear out the uCode error bit if it is set */
2293                 clear_bit(STATUS_FW_ERROR, &priv->status);
2294
2295                 /* start card; "initialize" will load runtime ucode */
2296                 iwl4965_nic_start(priv);
2297
2298                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2299
2300                 return 0;
2301         }
2302
2303         set_bit(STATUS_EXIT_PENDING, &priv->status);
2304         __iwl4965_down(priv);
2305         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2306
2307         /* tried to restart and config the device for as long as our
2308          * patience could withstand */
2309         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2310         return -EIO;
2311 }
2312
2313
2314 /*****************************************************************************
2315  *
2316  * Workqueue callbacks
2317  *
2318  *****************************************************************************/
2319
2320 static void iwl_bg_init_alive_start(struct work_struct *data)
2321 {
2322         struct iwl_priv *priv =
2323             container_of(data, struct iwl_priv, init_alive_start.work);
2324
2325         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2326                 return;
2327
2328         mutex_lock(&priv->mutex);
2329         priv->cfg->ops->lib->init_alive_start(priv);
2330         mutex_unlock(&priv->mutex);
2331 }
2332
2333 static void iwl_bg_alive_start(struct work_struct *data)
2334 {
2335         struct iwl_priv *priv =
2336             container_of(data, struct iwl_priv, alive_start.work);
2337
2338         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2339                 return;
2340
2341         mutex_lock(&priv->mutex);
2342         iwl_alive_start(priv);
2343         mutex_unlock(&priv->mutex);
2344 }
2345
2346 static void iwl4965_bg_rf_kill(struct work_struct *work)
2347 {
2348         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2349
2350         wake_up_interruptible(&priv->wait_command_queue);
2351
2352         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2353                 return;
2354
2355         mutex_lock(&priv->mutex);
2356
2357         if (!iwl_is_rfkill(priv)) {
2358                 IWL_DEBUG(IWL_DL_RF_KILL,
2359                           "HW and/or SW RF Kill no longer active, restarting "
2360                           "device\n");
2361                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2362                         queue_work(priv->workqueue, &priv->restart);
2363         } else {
2364                 /* make sure mac80211 stop sending Tx frame */
2365                 if (priv->mac80211_registered)
2366                         ieee80211_stop_queues(priv->hw);
2367
2368                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2369                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2370                                           "disabled by SW switch\n");
2371                 else
2372                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2373                                     "Kill switch must be turned off for "
2374                                     "wireless networking to work.\n");
2375         }
2376         mutex_unlock(&priv->mutex);
2377         iwl_rfkill_set_hw_state(priv);
2378 }
2379
2380 static void iwl4965_bg_set_monitor(struct work_struct *work)
2381 {
2382         struct iwl_priv *priv = container_of(work,
2383                                 struct iwl_priv, set_monitor);
2384         int ret;
2385
2386         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2387
2388         mutex_lock(&priv->mutex);
2389
2390         ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2391
2392         if (ret) {
2393                 if (ret == -EAGAIN)
2394                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2395                 else
2396                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2397         }
2398
2399         mutex_unlock(&priv->mutex);
2400 }
2401
2402 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2403 {
2404         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2405                         run_time_calib_work);
2406
2407         mutex_lock(&priv->mutex);
2408
2409         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2410             test_bit(STATUS_SCANNING, &priv->status)) {
2411                 mutex_unlock(&priv->mutex);
2412                 return;
2413         }
2414
2415         if (priv->start_calib) {
2416                 iwl_chain_noise_calibration(priv, &priv->statistics);
2417
2418                 iwl_sensitivity_calibration(priv, &priv->statistics);
2419         }
2420
2421         mutex_unlock(&priv->mutex);
2422         return;
2423 }
2424
2425 static void iwl4965_bg_up(struct work_struct *data)
2426 {
2427         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2428
2429         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2430                 return;
2431
2432         mutex_lock(&priv->mutex);
2433         __iwl4965_up(priv);
2434         mutex_unlock(&priv->mutex);
2435         iwl_rfkill_set_hw_state(priv);
2436 }
2437
2438 static void iwl4965_bg_restart(struct work_struct *data)
2439 {
2440         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2441
2442         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2443                 return;
2444
2445         iwl4965_down(priv);
2446         queue_work(priv->workqueue, &priv->up);
2447 }
2448
2449 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2450 {
2451         struct iwl_priv *priv =
2452             container_of(data, struct iwl_priv, rx_replenish);
2453
2454         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2455                 return;
2456
2457         mutex_lock(&priv->mutex);
2458         iwl_rx_replenish(priv);
2459         mutex_unlock(&priv->mutex);
2460 }
2461
2462 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2463
2464 static void iwl4965_post_associate(struct iwl_priv *priv)
2465 {
2466         struct ieee80211_conf *conf = NULL;
2467         int ret = 0;
2468         DECLARE_MAC_BUF(mac);
2469         unsigned long flags;
2470
2471         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2472                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2473                 return;
2474         }
2475
2476         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2477                         priv->assoc_id,
2478                         print_mac(mac, priv->active_rxon.bssid_addr));
2479
2480
2481         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2482                 return;
2483
2484
2485         if (!priv->vif || !priv->is_open)
2486                 return;
2487
2488         iwl_power_cancel_timeout(priv);
2489         iwl_scan_cancel_timeout(priv, 200);
2490
2491         conf = ieee80211_get_hw_conf(priv->hw);
2492
2493         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2494         iwl4965_commit_rxon(priv);
2495
2496         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2497         iwl4965_setup_rxon_timing(priv);
2498         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2499                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2500         if (ret)
2501                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2502                             "Attempting to continue.\n");
2503
2504         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2505
2506         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2507
2508         iwl_set_rxon_chain(priv);
2509         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2510
2511         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2512                         priv->assoc_id, priv->beacon_int);
2513
2514         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2515                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2516         else
2517                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2518
2519         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2520                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2521                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2522                 else
2523                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2524
2525                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2526                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2527
2528         }
2529
2530         iwl4965_commit_rxon(priv);
2531
2532         switch (priv->iw_mode) {
2533         case NL80211_IFTYPE_STATION:
2534                 break;
2535
2536         case NL80211_IFTYPE_ADHOC:
2537
2538                 /* assume default assoc id */
2539                 priv->assoc_id = 1;
2540
2541                 iwl_rxon_add_station(priv, priv->bssid, 0);
2542                 iwl4965_send_beacon_cmd(priv);
2543
2544                 break;
2545
2546         default:
2547                 IWL_ERROR("%s Should not be called in %d mode\n",
2548                           __func__, priv->iw_mode);
2549                 break;
2550         }
2551
2552         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2553                 priv->assoc_station_added = 1;
2554
2555         spin_lock_irqsave(&priv->lock, flags);
2556         iwl_activate_qos(priv, 0);
2557         spin_unlock_irqrestore(&priv->lock, flags);
2558
2559         /* the chain noise calibration will enabled PM upon completion
2560          * If chain noise has already been run, then we need to enable
2561          * power management here */
2562         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2563                 iwl_power_enable_management(priv);
2564
2565         /* Enable Rx differential gain and sensitivity calibrations */
2566         iwl_chain_noise_reset(priv);
2567         priv->start_calib = 1;
2568
2569 }
2570
2571 /*****************************************************************************
2572  *
2573  * mac80211 entry point functions
2574  *
2575  *****************************************************************************/
2576
2577 #define UCODE_READY_TIMEOUT     (4 * HZ)
2578
2579 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2580 {
2581         struct iwl_priv *priv = hw->priv;
2582         int ret;
2583         u16 pci_cmd;
2584
2585         IWL_DEBUG_MAC80211("enter\n");
2586
2587         if (pci_enable_device(priv->pci_dev)) {
2588                 IWL_ERROR("Fail to pci_enable_device\n");
2589                 return -ENODEV;
2590         }
2591         pci_restore_state(priv->pci_dev);
2592         pci_enable_msi(priv->pci_dev);
2593
2594         /* enable interrupts if needed: hw bug w/a */
2595         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2596         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2597                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2598                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2599         }
2600
2601         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2602                           DRV_NAME, priv);
2603         if (ret) {
2604                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2605                 goto out_disable_msi;
2606         }
2607
2608         /* we should be verifying the device is ready to be opened */
2609         mutex_lock(&priv->mutex);
2610
2611         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2612         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2613          * ucode filename and max sizes are card-specific. */
2614
2615         if (!priv->ucode_code.len) {
2616                 ret = iwl4965_read_ucode(priv);
2617                 if (ret) {
2618                         IWL_ERROR("Could not read microcode: %d\n", ret);
2619                         mutex_unlock(&priv->mutex);
2620                         goto out_release_irq;
2621                 }
2622         }
2623
2624         ret = __iwl4965_up(priv);
2625
2626         mutex_unlock(&priv->mutex);
2627
2628         iwl_rfkill_set_hw_state(priv);
2629
2630         if (ret)
2631                 goto out_release_irq;
2632
2633         if (iwl_is_rfkill(priv))
2634                 goto out;
2635
2636         IWL_DEBUG_INFO("Start UP work done.\n");
2637
2638         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2639                 return 0;
2640
2641         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2642          * mac80211 will not be run successfully. */
2643         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2644                         test_bit(STATUS_READY, &priv->status),
2645                         UCODE_READY_TIMEOUT);
2646         if (!ret) {
2647                 if (!test_bit(STATUS_READY, &priv->status)) {
2648                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2649                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2650                         ret = -ETIMEDOUT;
2651                         goto out_release_irq;
2652                 }
2653         }
2654
2655 out:
2656         priv->is_open = 1;
2657         IWL_DEBUG_MAC80211("leave\n");
2658         return 0;
2659
2660 out_release_irq:
2661         free_irq(priv->pci_dev->irq, priv);
2662 out_disable_msi:
2663         pci_disable_msi(priv->pci_dev);
2664         pci_disable_device(priv->pci_dev);
2665         priv->is_open = 0;
2666         IWL_DEBUG_MAC80211("leave - failed\n");
2667         return ret;
2668 }
2669
2670 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2671 {
2672         struct iwl_priv *priv = hw->priv;
2673
2674         IWL_DEBUG_MAC80211("enter\n");
2675
2676         if (!priv->is_open) {
2677                 IWL_DEBUG_MAC80211("leave - skip\n");
2678                 return;
2679         }
2680
2681         priv->is_open = 0;
2682
2683         if (iwl_is_ready_rf(priv)) {
2684                 /* stop mac, cancel any scan request and clear
2685                  * RXON_FILTER_ASSOC_MSK BIT
2686                  */
2687                 mutex_lock(&priv->mutex);
2688                 iwl_scan_cancel_timeout(priv, 100);
2689                 mutex_unlock(&priv->mutex);
2690         }
2691
2692         iwl4965_down(priv);
2693
2694         flush_workqueue(priv->workqueue);
2695         free_irq(priv->pci_dev->irq, priv);
2696         pci_disable_msi(priv->pci_dev);
2697         pci_save_state(priv->pci_dev);
2698         pci_disable_device(priv->pci_dev);
2699
2700         IWL_DEBUG_MAC80211("leave\n");
2701 }
2702
2703 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2704 {
2705         struct iwl_priv *priv = hw->priv;
2706
2707         IWL_DEBUG_MACDUMP("enter\n");
2708
2709         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2710                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2711
2712         if (iwl_tx_skb(priv, skb))
2713                 dev_kfree_skb_any(skb);
2714
2715         IWL_DEBUG_MACDUMP("leave\n");
2716         return 0;
2717 }
2718
2719 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2720                                  struct ieee80211_if_init_conf *conf)
2721 {
2722         struct iwl_priv *priv = hw->priv;
2723         unsigned long flags;
2724         DECLARE_MAC_BUF(mac);
2725
2726         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2727
2728         if (priv->vif) {
2729                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2730                 return -EOPNOTSUPP;
2731         }
2732
2733         spin_lock_irqsave(&priv->lock, flags);
2734         priv->vif = conf->vif;
2735
2736         spin_unlock_irqrestore(&priv->lock, flags);
2737
2738         mutex_lock(&priv->mutex);
2739
2740         if (conf->mac_addr) {
2741                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2742                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2743         }
2744
2745         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2746                 /* we are not ready, will run again when ready */
2747                 set_bit(STATUS_MODE_PENDING, &priv->status);
2748
2749         mutex_unlock(&priv->mutex);
2750
2751         IWL_DEBUG_MAC80211("leave\n");
2752         return 0;
2753 }
2754
2755 /**
2756  * iwl4965_mac_config - mac80211 config callback
2757  *
2758  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2759  * be set inappropriately and the driver currently sets the hardware up to
2760  * use it whenever needed.
2761  */
2762 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2763 {
2764         struct iwl_priv *priv = hw->priv;
2765         const struct iwl_channel_info *ch_info;
2766         unsigned long flags;
2767         int ret = 0;
2768         u16 channel;
2769
2770         mutex_lock(&priv->mutex);
2771         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2772
2773         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2774                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2775                 goto out;
2776         }
2777
2778         if (!conf->radio_enabled)
2779                 iwl_radio_kill_sw_disable_radio(priv);
2780
2781         if (!iwl_is_ready(priv)) {
2782                 IWL_DEBUG_MAC80211("leave - not ready\n");
2783                 ret = -EIO;
2784                 goto out;
2785         }
2786
2787         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2788                      test_bit(STATUS_SCANNING, &priv->status))) {
2789                 IWL_DEBUG_MAC80211("leave - scanning\n");
2790                 mutex_unlock(&priv->mutex);
2791                 return 0;
2792         }
2793
2794         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2795         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2796         if (!is_channel_valid(ch_info)) {
2797                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2798                 ret = -EINVAL;
2799                 goto out;
2800         }
2801
2802         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2803             !is_channel_ibss(ch_info)) {
2804                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2805                         conf->channel->hw_value, conf->channel->band);
2806                 ret = -EINVAL;
2807                 goto out;
2808         }
2809
2810         spin_lock_irqsave(&priv->lock, flags);
2811
2812
2813         /* if we are switching from ht to 2.4 clear flags
2814          * from any ht related info since 2.4 does not
2815          * support ht */
2816         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2817 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2818             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2819 #endif
2820         )
2821                 priv->staging_rxon.flags = 0;
2822
2823         iwl_set_rxon_channel(priv, conf->channel);
2824
2825         iwl_set_flags_for_band(priv, conf->channel->band);
2826
2827         /* The list of supported rates and rate mask can be different
2828          * for each band; since the band may have changed, reset
2829          * the rate mask to what mac80211 lists */
2830         iwl4965_set_rate(priv);
2831
2832         spin_unlock_irqrestore(&priv->lock, flags);
2833
2834 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2835         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2836                 iwl4965_hw_channel_switch(priv, conf->channel);
2837                 goto out;
2838         }
2839 #endif
2840
2841         if (!conf->radio_enabled) {
2842                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2843                 goto out;
2844         }
2845
2846         if (iwl_is_rfkill(priv)) {
2847                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2848                 ret = -EIO;
2849                 goto out;
2850         }
2851
2852         if (conf->flags & IEEE80211_CONF_PS)
2853                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2854         else
2855                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2856         if (ret)
2857                 IWL_DEBUG_MAC80211("Error setting power level\n");
2858
2859         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2860                            priv->tx_power_user_lmt, conf->power_level);
2861
2862         iwl_set_tx_power(priv, conf->power_level, false);
2863
2864         iwl4965_set_rate(priv);
2865
2866         if (memcmp(&priv->active_rxon,
2867                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2868                 iwl4965_commit_rxon(priv);
2869         else
2870                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2871
2872         IWL_DEBUG_MAC80211("leave\n");
2873
2874 out:
2875         mutex_unlock(&priv->mutex);
2876         return ret;
2877 }
2878
2879 static void iwl4965_config_ap(struct iwl_priv *priv)
2880 {
2881         int ret = 0;
2882         unsigned long flags;
2883
2884         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2885                 return;
2886
2887         /* The following should be done only at AP bring up */
2888         if (!(iwl_is_associated(priv))) {
2889
2890                 /* RXON - unassoc (to set timing command) */
2891                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2892                 iwl4965_commit_rxon(priv);
2893
2894                 /* RXON Timing */
2895                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2896                 iwl4965_setup_rxon_timing(priv);
2897                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2898                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2899                 if (ret)
2900                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2901                                         "Attempting to continue.\n");
2902
2903                 iwl_set_rxon_chain(priv);
2904
2905                 /* FIXME: what should be the assoc_id for AP? */
2906                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2907                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2908                         priv->staging_rxon.flags |=
2909                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2910                 else
2911                         priv->staging_rxon.flags &=
2912                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2913
2914                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2915                         if (priv->assoc_capability &
2916                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2917                                 priv->staging_rxon.flags |=
2918                                         RXON_FLG_SHORT_SLOT_MSK;
2919                         else
2920                                 priv->staging_rxon.flags &=
2921                                         ~RXON_FLG_SHORT_SLOT_MSK;
2922
2923                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2924                                 priv->staging_rxon.flags &=
2925                                         ~RXON_FLG_SHORT_SLOT_MSK;
2926                 }
2927                 /* restore RXON assoc */
2928                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2929                 iwl4965_commit_rxon(priv);
2930                 spin_lock_irqsave(&priv->lock, flags);
2931                 iwl_activate_qos(priv, 1);
2932                 spin_unlock_irqrestore(&priv->lock, flags);
2933                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2934         }
2935         iwl4965_send_beacon_cmd(priv);
2936
2937         /* FIXME - we need to add code here to detect a totally new
2938          * configuration, reset the AP, unassoc, rxon timing, assoc,
2939          * clear sta table, add BCAST sta... */
2940 }
2941
2942 /* temporary */
2943 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2944
2945 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2946                                         struct ieee80211_vif *vif,
2947                                     struct ieee80211_if_conf *conf)
2948 {
2949         struct iwl_priv *priv = hw->priv;
2950         DECLARE_MAC_BUF(mac);
2951         unsigned long flags;
2952         int rc;
2953
2954         if (conf == NULL)
2955                 return -EIO;
2956
2957         if (priv->vif != vif) {
2958                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2959                 return 0;
2960         }
2961
2962         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2963             conf->changed & IEEE80211_IFCC_BEACON) {
2964                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2965                 if (!beacon)
2966                         return -ENOMEM;
2967                 rc = iwl4965_mac_beacon_update(hw, beacon);
2968                 if (rc)
2969                         return rc;
2970         }
2971
2972         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2973             (!conf->ssid_len)) {
2974                 IWL_DEBUG_MAC80211
2975                     ("Leaving in AP mode because HostAPD is not ready.\n");
2976                 return 0;
2977         }
2978
2979         if (!iwl_is_alive(priv))
2980                 return -EAGAIN;
2981
2982         mutex_lock(&priv->mutex);
2983
2984         if (conf->bssid)
2985                 IWL_DEBUG_MAC80211("bssid: %s\n",
2986                                    print_mac(mac, conf->bssid));
2987
2988 /*
2989  * very dubious code was here; the probe filtering flag is never set:
2990  *
2991         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2992             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2993  */
2994
2995         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2996                 if (!conf->bssid) {
2997                         conf->bssid = priv->mac_addr;
2998                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2999                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3000                                            print_mac(mac, conf->bssid));
3001                 }
3002                 if (priv->ibss_beacon)
3003                         dev_kfree_skb(priv->ibss_beacon);
3004
3005                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3006         }
3007
3008         if (iwl_is_rfkill(priv))
3009                 goto done;
3010
3011         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3012             !is_multicast_ether_addr(conf->bssid)) {
3013                 /* If there is currently a HW scan going on in the background
3014                  * then we need to cancel it else the RXON below will fail. */
3015                 if (iwl_scan_cancel_timeout(priv, 100)) {
3016                         IWL_WARNING("Aborted scan still in progress "
3017                                     "after 100ms\n");
3018                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3019                         mutex_unlock(&priv->mutex);
3020                         return -EAGAIN;
3021                 }
3022                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3023
3024                 /* TODO: Audit driver for usage of these members and see
3025                  * if mac80211 deprecates them (priv->bssid looks like it
3026                  * shouldn't be there, but I haven't scanned the IBSS code
3027                  * to verify) - jpk */
3028                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3029
3030                 if (priv->iw_mode == NL80211_IFTYPE_AP)
3031                         iwl4965_config_ap(priv);
3032                 else {
3033                         rc = iwl4965_commit_rxon(priv);
3034                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3035                                 iwl_rxon_add_station(
3036                                         priv, priv->active_rxon.bssid_addr, 1);
3037                 }
3038
3039         } else {
3040                 iwl_scan_cancel_timeout(priv, 100);
3041                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3042                 iwl4965_commit_rxon(priv);
3043         }
3044
3045  done:
3046         spin_lock_irqsave(&priv->lock, flags);
3047         if (!conf->ssid_len)
3048                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3049         else
3050                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3051
3052         priv->essid_len = conf->ssid_len;
3053         spin_unlock_irqrestore(&priv->lock, flags);
3054
3055         IWL_DEBUG_MAC80211("leave\n");
3056         mutex_unlock(&priv->mutex);
3057
3058         return 0;
3059 }
3060
3061 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3062                                  unsigned int changed_flags,
3063                                  unsigned int *total_flags,
3064                                  int mc_count, struct dev_addr_list *mc_list)
3065 {
3066         struct iwl_priv *priv = hw->priv;
3067
3068         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3069                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3070                                    NL80211_IFTYPE_MONITOR,
3071                                    changed_flags, *total_flags);
3072                 /* queue work 'cuz mac80211 is holding a lock which
3073                  * prevents us from issuing (synchronous) f/w cmds */
3074                 queue_work(priv->workqueue, &priv->set_monitor);
3075         }
3076         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3077                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3078 }
3079
3080 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3081                                      struct ieee80211_if_init_conf *conf)
3082 {
3083         struct iwl_priv *priv = hw->priv;
3084
3085         IWL_DEBUG_MAC80211("enter\n");
3086
3087         mutex_lock(&priv->mutex);
3088
3089         if (iwl_is_ready_rf(priv)) {
3090                 iwl_scan_cancel_timeout(priv, 100);
3091                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3092                 iwl4965_commit_rxon(priv);
3093         }
3094         if (priv->vif == conf->vif) {
3095                 priv->vif = NULL;
3096                 memset(priv->bssid, 0, ETH_ALEN);
3097                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3098                 priv->essid_len = 0;
3099         }
3100         mutex_unlock(&priv->mutex);
3101
3102         IWL_DEBUG_MAC80211("leave\n");
3103
3104 }
3105
3106 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3107 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3108                                      struct ieee80211_vif *vif,
3109                                      struct ieee80211_bss_conf *bss_conf,
3110                                      u32 changes)
3111 {
3112         struct iwl_priv *priv = hw->priv;
3113
3114         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3115
3116         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3117                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3118                                    bss_conf->use_short_preamble);
3119                 if (bss_conf->use_short_preamble)
3120                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3121                 else
3122                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3123         }
3124
3125         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3126                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3127                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3128                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3129                 else
3130                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3131         }
3132
3133         if (changes & BSS_CHANGED_HT) {
3134                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3135                 iwl4965_ht_conf(priv, bss_conf);
3136                 iwl_set_rxon_chain(priv);
3137         }
3138
3139         if (changes & BSS_CHANGED_ASSOC) {
3140                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3141                 /* This should never happen as this function should
3142                  * never be called from interrupt context. */
3143                 if (WARN_ON_ONCE(in_interrupt()))
3144                         return;
3145                 if (bss_conf->assoc) {
3146                         priv->assoc_id = bss_conf->aid;
3147                         priv->beacon_int = bss_conf->beacon_int;
3148                         priv->power_data.dtim_period = bss_conf->dtim_period;
3149                         priv->timestamp = bss_conf->timestamp;
3150                         priv->assoc_capability = bss_conf->assoc_capability;
3151
3152                         /* we have just associated, don't start scan too early
3153                          * leave time for EAPOL exchange to complete
3154                          */
3155                         priv->next_scan_jiffies = jiffies +
3156                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3157                         mutex_lock(&priv->mutex);
3158                         iwl4965_post_associate(priv);
3159                         mutex_unlock(&priv->mutex);
3160                 } else {
3161                         priv->assoc_id = 0;
3162                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3163                 }
3164         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3165                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3166                         iwl_send_rxon_assoc(priv);
3167         }
3168
3169 }
3170
3171 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3172 {
3173         unsigned long flags;
3174         struct iwl_priv *priv = hw->priv;
3175         int ret;
3176
3177         IWL_DEBUG_MAC80211("enter\n");
3178
3179         mutex_lock(&priv->mutex);
3180         spin_lock_irqsave(&priv->lock, flags);
3181
3182         if (!iwl_is_ready_rf(priv)) {
3183                 ret = -EIO;
3184                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3185                 goto out_unlock;
3186         }
3187
3188         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3189                 ret = -EIO;
3190                 IWL_ERROR("ERROR: APs don't scan\n");
3191                 goto out_unlock;
3192         }
3193
3194         /* We don't schedule scan within next_scan_jiffies period.
3195          * Avoid scanning during possible EAPOL exchange, return
3196          * success immediately.
3197          */
3198         if (priv->next_scan_jiffies &&
3199             time_after(priv->next_scan_jiffies, jiffies)) {
3200                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3201                 queue_work(priv->workqueue, &priv->scan_completed);
3202                 ret = 0;
3203                 goto out_unlock;
3204         }
3205
3206         /* if we just finished scan ask for delay */
3207         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3208             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3209                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3210                 queue_work(priv->workqueue, &priv->scan_completed);
3211                 ret = 0;
3212                 goto out_unlock;
3213         }
3214
3215         if (ssid_len) {
3216                 priv->one_direct_scan = 1;
3217                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3218                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3219         } else {
3220                 priv->one_direct_scan = 0;
3221         }
3222
3223         ret = iwl_scan_initiate(priv);
3224
3225         IWL_DEBUG_MAC80211("leave\n");
3226
3227 out_unlock:
3228         spin_unlock_irqrestore(&priv->lock, flags);
3229         mutex_unlock(&priv->mutex);
3230
3231         return ret;
3232 }
3233
3234 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3235                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3236                         u32 iv32, u16 *phase1key)
3237 {
3238         struct iwl_priv *priv = hw->priv;
3239         u8 sta_id = IWL_INVALID_STATION;
3240         unsigned long flags;
3241         __le16 key_flags = 0;
3242         int i;
3243         DECLARE_MAC_BUF(mac);
3244
3245         IWL_DEBUG_MAC80211("enter\n");
3246
3247         sta_id = iwl_find_station(priv, addr);
3248         if (sta_id == IWL_INVALID_STATION) {
3249                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3250                                    print_mac(mac, addr));
3251                 return;
3252         }
3253
3254         if (iwl_scan_cancel(priv)) {
3255                 /* cancel scan failed, just live w/ bad key and rely
3256                    briefly on SW decryption */
3257                 return;
3258         }
3259
3260         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3261         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3262         key_flags &= ~STA_KEY_FLG_INVALID;
3263
3264         if (sta_id == priv->hw_params.bcast_sta_id)
3265                 key_flags |= STA_KEY_MULTICAST_MSK;
3266
3267         spin_lock_irqsave(&priv->sta_lock, flags);
3268
3269         priv->stations[sta_id].sta.key.key_flags = key_flags;
3270         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3271
3272         for (i = 0; i < 5; i++)
3273                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3274                         cpu_to_le16(phase1key[i]);
3275
3276         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3277         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3278
3279         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3280
3281         spin_unlock_irqrestore(&priv->sta_lock, flags);
3282
3283         IWL_DEBUG_MAC80211("leave\n");
3284 }
3285
3286 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3287                            const u8 *local_addr, const u8 *addr,
3288                            struct ieee80211_key_conf *key)
3289 {
3290         struct iwl_priv *priv = hw->priv;
3291         DECLARE_MAC_BUF(mac);
3292         int ret = 0;
3293         u8 sta_id = IWL_INVALID_STATION;
3294         u8 is_default_wep_key = 0;
3295
3296         IWL_DEBUG_MAC80211("enter\n");
3297
3298         if (priv->hw_params.sw_crypto) {
3299                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3300                 return -EOPNOTSUPP;
3301         }
3302
3303         if (is_zero_ether_addr(addr))
3304                 /* only support pairwise keys */
3305                 return -EOPNOTSUPP;
3306
3307         sta_id = iwl_find_station(priv, addr);
3308         if (sta_id == IWL_INVALID_STATION) {
3309                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3310                                    print_mac(mac, addr));
3311                 return -EINVAL;
3312
3313         }
3314
3315         mutex_lock(&priv->mutex);
3316         iwl_scan_cancel_timeout(priv, 100);
3317         mutex_unlock(&priv->mutex);
3318
3319         /* If we are getting WEP group key and we didn't receive any key mapping
3320          * so far, we are in legacy wep mode (group key only), otherwise we are
3321          * in 1X mode.
3322          * In legacy wep mode, we use another host command to the uCode */
3323         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3324                 priv->iw_mode != NL80211_IFTYPE_AP) {
3325                 if (cmd == SET_KEY)
3326                         is_default_wep_key = !priv->key_mapping_key;
3327                 else
3328                         is_default_wep_key =
3329                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3330         }
3331
3332         switch (cmd) {
3333         case SET_KEY:
3334                 if (is_default_wep_key)
3335                         ret = iwl_set_default_wep_key(priv, key);
3336                 else
3337                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3338
3339                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3340                 break;
3341         case DISABLE_KEY:
3342                 if (is_default_wep_key)
3343                         ret = iwl_remove_default_wep_key(priv, key);
3344                 else
3345                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3346
3347                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3348                 break;
3349         default:
3350                 ret = -EINVAL;
3351         }
3352
3353         IWL_DEBUG_MAC80211("leave\n");
3354
3355         return ret;
3356 }
3357
3358 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3359                            const struct ieee80211_tx_queue_params *params)
3360 {
3361         struct iwl_priv *priv = hw->priv;
3362         unsigned long flags;
3363         int q;
3364
3365         IWL_DEBUG_MAC80211("enter\n");
3366
3367         if (!iwl_is_ready_rf(priv)) {
3368                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3369                 return -EIO;
3370         }
3371
3372         if (queue >= AC_NUM) {
3373                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3374                 return 0;
3375         }
3376
3377         if (!priv->qos_data.qos_enable) {
3378                 priv->qos_data.qos_active = 0;
3379                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3380                 return 0;
3381         }
3382         q = AC_NUM - 1 - queue;
3383
3384         spin_lock_irqsave(&priv->lock, flags);
3385
3386         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3387         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3388         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3389         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3390                         cpu_to_le16((params->txop * 32));
3391
3392         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3393         priv->qos_data.qos_active = 1;
3394
3395         if (priv->iw_mode == NL80211_IFTYPE_AP)
3396                 iwl_activate_qos(priv, 1);
3397         else if (priv->assoc_id && iwl_is_associated(priv))
3398                 iwl_activate_qos(priv, 0);
3399
3400         spin_unlock_irqrestore(&priv->lock, flags);
3401
3402         IWL_DEBUG_MAC80211("leave\n");
3403         return 0;
3404 }
3405
3406 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3407                              enum ieee80211_ampdu_mlme_action action,
3408                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3409 {
3410         struct iwl_priv *priv = hw->priv;
3411         DECLARE_MAC_BUF(mac);
3412
3413         IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3414                      print_mac(mac, sta->addr), tid);
3415
3416         if (!(priv->cfg->sku & IWL_SKU_N))
3417                 return -EACCES;
3418
3419         switch (action) {
3420         case IEEE80211_AMPDU_RX_START:
3421                 IWL_DEBUG_HT("start Rx\n");
3422                 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3423         case IEEE80211_AMPDU_RX_STOP:
3424                 IWL_DEBUG_HT("stop Rx\n");
3425                 return iwl_rx_agg_stop(priv, sta->addr, tid);
3426         case IEEE80211_AMPDU_TX_START:
3427                 IWL_DEBUG_HT("start Tx\n");
3428                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3429         case IEEE80211_AMPDU_TX_STOP:
3430                 IWL_DEBUG_HT("stop Tx\n");
3431                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3432         default:
3433                 IWL_DEBUG_HT("unknown\n");
3434                 return -EINVAL;
3435                 break;
3436         }
3437         return 0;
3438 }
3439 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3440                                 struct ieee80211_tx_queue_stats *stats)
3441 {
3442         struct iwl_priv *priv = hw->priv;
3443         int i, avail;
3444         struct iwl_tx_queue *txq;
3445         struct iwl_queue *q;
3446         unsigned long flags;
3447
3448         IWL_DEBUG_MAC80211("enter\n");
3449
3450         if (!iwl_is_ready_rf(priv)) {
3451                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3452                 return -EIO;
3453         }
3454
3455         spin_lock_irqsave(&priv->lock, flags);
3456
3457         for (i = 0; i < AC_NUM; i++) {
3458                 txq = &priv->txq[i];
3459                 q = &txq->q;
3460                 avail = iwl_queue_space(q);
3461
3462                 stats[i].len = q->n_window - avail;
3463                 stats[i].limit = q->n_window - q->high_mark;
3464                 stats[i].count = q->n_window;
3465
3466         }
3467         spin_unlock_irqrestore(&priv->lock, flags);
3468
3469         IWL_DEBUG_MAC80211("leave\n");
3470
3471         return 0;
3472 }
3473
3474 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3475                              struct ieee80211_low_level_stats *stats)
3476 {
3477         struct iwl_priv *priv = hw->priv;
3478
3479         priv = hw->priv;
3480         IWL_DEBUG_MAC80211("enter\n");
3481         IWL_DEBUG_MAC80211("leave\n");
3482
3483         return 0;
3484 }
3485
3486 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3487 {
3488         struct iwl_priv *priv = hw->priv;
3489         unsigned long flags;
3490
3491         mutex_lock(&priv->mutex);
3492         IWL_DEBUG_MAC80211("enter\n");
3493
3494         spin_lock_irqsave(&priv->lock, flags);
3495         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3496         spin_unlock_irqrestore(&priv->lock, flags);
3497
3498         iwl_reset_qos(priv);
3499
3500         spin_lock_irqsave(&priv->lock, flags);
3501         priv->assoc_id = 0;
3502         priv->assoc_capability = 0;
3503         priv->assoc_station_added = 0;
3504
3505         /* new association get rid of ibss beacon skb */
3506         if (priv->ibss_beacon)
3507                 dev_kfree_skb(priv->ibss_beacon);
3508
3509         priv->ibss_beacon = NULL;
3510
3511         priv->beacon_int = priv->hw->conf.beacon_int;
3512         priv->timestamp = 0;
3513         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3514                 priv->beacon_int = 0;
3515
3516         spin_unlock_irqrestore(&priv->lock, flags);
3517
3518         if (!iwl_is_ready_rf(priv)) {
3519                 IWL_DEBUG_MAC80211("leave - not ready\n");
3520                 mutex_unlock(&priv->mutex);
3521                 return;
3522         }
3523
3524         /* we are restarting association process
3525          * clear RXON_FILTER_ASSOC_MSK bit
3526          */
3527         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3528                 iwl_scan_cancel_timeout(priv, 100);
3529                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3530                 iwl4965_commit_rxon(priv);
3531         }
3532
3533         iwl_power_update_mode(priv, 0);
3534
3535         /* Per mac80211.h: This is only used in IBSS mode... */
3536         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3537
3538                 /* switch to CAM during association period.
3539                  * the ucode will block any association/authentication
3540                  * frome during assiciation period if it can not hear
3541                  * the AP because of PM. the timer enable PM back is
3542                  * association do not complete
3543                  */
3544                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3545                                                      IEEE80211_CHAN_RADAR))
3546                                 iwl_power_disable_management(priv, 3000);
3547
3548                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3549                 mutex_unlock(&priv->mutex);
3550                 return;
3551         }
3552
3553         iwl4965_set_rate(priv);
3554
3555         mutex_unlock(&priv->mutex);
3556
3557         IWL_DEBUG_MAC80211("leave\n");
3558 }
3559
3560 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3561 {
3562         struct iwl_priv *priv = hw->priv;
3563         unsigned long flags;
3564         __le64 timestamp;
3565
3566         mutex_lock(&priv->mutex);
3567         IWL_DEBUG_MAC80211("enter\n");
3568
3569         if (!iwl_is_ready_rf(priv)) {
3570                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3571                 mutex_unlock(&priv->mutex);
3572                 return -EIO;
3573         }
3574
3575         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3576                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3577                 mutex_unlock(&priv->mutex);
3578                 return -EIO;
3579         }
3580
3581         spin_lock_irqsave(&priv->lock, flags);
3582
3583         if (priv->ibss_beacon)
3584                 dev_kfree_skb(priv->ibss_beacon);
3585
3586         priv->ibss_beacon = skb;
3587
3588         priv->assoc_id = 0;
3589         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3590         priv->timestamp = le64_to_cpu(timestamp);
3591
3592         IWL_DEBUG_MAC80211("leave\n");
3593         spin_unlock_irqrestore(&priv->lock, flags);
3594
3595         iwl_reset_qos(priv);
3596
3597         iwl4965_post_associate(priv);
3598
3599         mutex_unlock(&priv->mutex);
3600
3601         return 0;
3602 }
3603
3604 /*****************************************************************************
3605  *
3606  * sysfs attributes
3607  *
3608  *****************************************************************************/
3609
3610 #ifdef CONFIG_IWLWIFI_DEBUG
3611
3612 /*
3613  * The following adds a new attribute to the sysfs representation
3614  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3615  * used for controlling the debug level.
3616  *
3617  * See the level definitions in iwl for details.
3618  */
3619
3620 static ssize_t show_debug_level(struct device *d,
3621                                 struct device_attribute *attr, char *buf)
3622 {
3623         struct iwl_priv *priv = d->driver_data;
3624
3625         return sprintf(buf, "0x%08X\n", priv->debug_level);
3626 }
3627 static ssize_t store_debug_level(struct device *d,
3628                                 struct device_attribute *attr,
3629                                  const char *buf, size_t count)
3630 {
3631         struct iwl_priv *priv = d->driver_data;
3632         unsigned long val;
3633         int ret;
3634
3635         ret = strict_strtoul(buf, 0, &val);
3636         if (ret)
3637                 printk(KERN_INFO DRV_NAME
3638                        ": %s is not in hex or decimal form.\n", buf);
3639         else
3640                 priv->debug_level = val;
3641
3642         return strnlen(buf, count);
3643 }
3644
3645 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3646                         show_debug_level, store_debug_level);
3647
3648
3649 #endif /* CONFIG_IWLWIFI_DEBUG */
3650
3651
3652 static ssize_t show_version(struct device *d,
3653                                 struct device_attribute *attr, char *buf)
3654 {
3655         struct iwl_priv *priv = d->driver_data;
3656         struct iwl_alive_resp *palive = &priv->card_alive;
3657         ssize_t pos = 0;
3658         u16 eeprom_ver;
3659
3660         if (palive->is_valid)
3661                 pos += sprintf(buf + pos,
3662                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3663                                 "fw type: 0x%01X 0x%01X\n",
3664                                 palive->ucode_major, palive->ucode_minor,
3665                                 palive->sw_rev[0], palive->sw_rev[1],
3666                                 palive->ver_type, palive->ver_subtype);
3667         else
3668                 pos += sprintf(buf + pos, "fw not loaded\n");
3669
3670         if (priv->eeprom) {
3671                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3672                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3673                                  eeprom_ver);
3674         } else {
3675                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3676         }
3677
3678         return pos;
3679 }
3680
3681 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3682
3683 static ssize_t show_temperature(struct device *d,
3684                                 struct device_attribute *attr, char *buf)
3685 {
3686         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3687
3688         if (!iwl_is_alive(priv))
3689                 return -EAGAIN;
3690
3691         return sprintf(buf, "%d\n", priv->temperature);
3692 }
3693
3694 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3695
3696 static ssize_t show_tx_power(struct device *d,
3697                              struct device_attribute *attr, char *buf)
3698 {
3699         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3700         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3701 }
3702
3703 static ssize_t store_tx_power(struct device *d,
3704                               struct device_attribute *attr,
3705                               const char *buf, size_t count)
3706 {
3707         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3708         unsigned long val;
3709         int ret;
3710
3711         ret = strict_strtoul(buf, 10, &val);
3712         if (ret)
3713                 printk(KERN_INFO DRV_NAME
3714                        ": %s is not in decimal form.\n", buf);
3715         else
3716                 iwl_set_tx_power(priv, val, false);
3717
3718         return count;
3719 }
3720
3721 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3722
3723 static ssize_t show_flags(struct device *d,
3724                           struct device_attribute *attr, char *buf)
3725 {
3726         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3727
3728         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3729 }
3730
3731 static ssize_t store_flags(struct device *d,
3732                            struct device_attribute *attr,
3733                            const char *buf, size_t count)
3734 {
3735         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3736         unsigned long val;
3737         u32 flags;
3738         int ret = strict_strtoul(buf, 0, &val);
3739         if (ret)
3740                 return ret;
3741         flags = (u32)val;
3742
3743         mutex_lock(&priv->mutex);
3744         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3745                 /* Cancel any currently running scans... */
3746                 if (iwl_scan_cancel_timeout(priv, 100))
3747                         IWL_WARNING("Could not cancel scan.\n");
3748                 else {
3749                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3750                         priv->staging_rxon.flags = cpu_to_le32(flags);
3751                         iwl4965_commit_rxon(priv);
3752                 }
3753         }
3754         mutex_unlock(&priv->mutex);
3755
3756         return count;
3757 }
3758
3759 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3760
3761 static ssize_t show_filter_flags(struct device *d,
3762                                  struct device_attribute *attr, char *buf)
3763 {
3764         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3765
3766         return sprintf(buf, "0x%04X\n",
3767                 le32_to_cpu(priv->active_rxon.filter_flags));
3768 }
3769
3770 static ssize_t store_filter_flags(struct device *d,
3771                                   struct device_attribute *attr,
3772                                   const char *buf, size_t count)
3773 {
3774         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3775         unsigned long val;
3776         u32 filter_flags;
3777         int ret = strict_strtoul(buf, 0, &val);
3778         if (ret)
3779                 return ret;
3780         filter_flags = (u32)val;
3781
3782         mutex_lock(&priv->mutex);
3783         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3784                 /* Cancel any currently running scans... */
3785                 if (iwl_scan_cancel_timeout(priv, 100))
3786                         IWL_WARNING("Could not cancel scan.\n");
3787                 else {
3788                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3789                                        "0x%04X\n", filter_flags);
3790                         priv->staging_rxon.filter_flags =
3791                                 cpu_to_le32(filter_flags);
3792                         iwl4965_commit_rxon(priv);
3793                 }
3794         }
3795         mutex_unlock(&priv->mutex);
3796
3797         return count;
3798 }
3799
3800 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3801                    store_filter_flags);
3802
3803 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3804
3805 static ssize_t show_measurement(struct device *d,
3806                                 struct device_attribute *attr, char *buf)
3807 {
3808         struct iwl_priv *priv = dev_get_drvdata(d);
3809         struct iwl4965_spectrum_notification measure_report;
3810         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3811         u8 *data = (u8 *)&measure_report;
3812         unsigned long flags;
3813
3814         spin_lock_irqsave(&priv->lock, flags);
3815         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3816                 spin_unlock_irqrestore(&priv->lock, flags);
3817                 return 0;
3818         }
3819         memcpy(&measure_report, &priv->measure_report, size);
3820         priv->measurement_status = 0;
3821         spin_unlock_irqrestore(&priv->lock, flags);
3822
3823         while (size && (PAGE_SIZE - len)) {
3824                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3825                                    PAGE_SIZE - len, 1);
3826                 len = strlen(buf);
3827                 if (PAGE_SIZE - len)
3828                         buf[len++] = '\n';
3829
3830                 ofs += 16;
3831                 size -= min(size, 16U);
3832         }
3833
3834         return len;
3835 }
3836
3837 static ssize_t store_measurement(struct device *d,
3838                                  struct device_attribute *attr,
3839                                  const char *buf, size_t count)
3840 {
3841         struct iwl_priv *priv = dev_get_drvdata(d);
3842         struct ieee80211_measurement_params params = {
3843                 .channel = le16_to_cpu(priv->active_rxon.channel),
3844                 .start_time = cpu_to_le64(priv->last_tsf),
3845                 .duration = cpu_to_le16(1),
3846         };
3847         u8 type = IWL_MEASURE_BASIC;
3848         u8 buffer[32];
3849         u8 channel;
3850
3851         if (count) {
3852                 char *p = buffer;
3853                 strncpy(buffer, buf, min(sizeof(buffer), count));
3854                 channel = simple_strtoul(p, NULL, 0);
3855                 if (channel)
3856                         params.channel = channel;
3857
3858                 p = buffer;
3859                 while (*p && *p != ' ')
3860                         p++;
3861                 if (*p)
3862                         type = simple_strtoul(p + 1, NULL, 0);
3863         }
3864
3865         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3866                        "channel %d (for '%s')\n", type, params.channel, buf);
3867         iwl4965_get_measurement(priv, &params, type);
3868
3869         return count;
3870 }
3871
3872 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3873                    show_measurement, store_measurement);
3874 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3875
3876 static ssize_t store_retry_rate(struct device *d,
3877                                 struct device_attribute *attr,
3878                                 const char *buf, size_t count)
3879 {
3880         struct iwl_priv *priv = dev_get_drvdata(d);
3881         long val;
3882         int ret  = strict_strtol(buf, 10, &val);
3883         if (!ret)
3884                 return ret;
3885
3886         priv->retry_rate = (val > 0) ? val : 1;
3887
3888         return count;
3889 }
3890
3891 static ssize_t show_retry_rate(struct device *d,
3892                                struct device_attribute *attr, char *buf)
3893 {
3894         struct iwl_priv *priv = dev_get_drvdata(d);
3895         return sprintf(buf, "%d", priv->retry_rate);
3896 }
3897
3898 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3899                    store_retry_rate);
3900
3901 static ssize_t store_power_level(struct device *d,
3902                                  struct device_attribute *attr,
3903                                  const char *buf, size_t count)
3904 {
3905         struct iwl_priv *priv = dev_get_drvdata(d);
3906         int ret;
3907         unsigned long mode;
3908
3909
3910         mutex_lock(&priv->mutex);
3911
3912         if (!iwl_is_ready(priv)) {
3913                 ret = -EAGAIN;
3914                 goto out;
3915         }
3916
3917         ret = strict_strtoul(buf, 10, &mode);
3918         if (ret)
3919                 goto out;
3920
3921         ret = iwl_power_set_user_mode(priv, mode);
3922         if (ret) {
3923                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3924                 goto out;
3925         }
3926         ret = count;
3927
3928  out:
3929         mutex_unlock(&priv->mutex);
3930         return ret;
3931 }
3932
3933 static ssize_t show_power_level(struct device *d,
3934                                 struct device_attribute *attr, char *buf)
3935 {
3936         struct iwl_priv *priv = dev_get_drvdata(d);
3937         int mode = priv->power_data.user_power_setting;
3938         int system = priv->power_data.system_power_setting;
3939         int level = priv->power_data.power_mode;
3940         char *p = buf;
3941
3942         switch (system) {
3943         case IWL_POWER_SYS_AUTO:
3944                 p += sprintf(p, "SYSTEM:auto");
3945                 break;
3946         case IWL_POWER_SYS_AC:
3947                 p += sprintf(p, "SYSTEM:ac");
3948                 break;
3949         case IWL_POWER_SYS_BATTERY:
3950                 p += sprintf(p, "SYSTEM:battery");
3951                 break;
3952         }
3953
3954         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3955         p += sprintf(p, "\tINDEX:%d", level);
3956         p += sprintf(p, "\n");
3957         return p - buf + 1;
3958 }
3959
3960 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3961                    store_power_level);
3962
3963 static ssize_t show_channels(struct device *d,
3964                              struct device_attribute *attr, char *buf)
3965 {
3966
3967         struct iwl_priv *priv = dev_get_drvdata(d);
3968         struct ieee80211_channel *channels = NULL;
3969         const struct ieee80211_supported_band *supp_band = NULL;
3970         int len = 0, i;
3971         int count = 0;
3972
3973         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3974                 return -EAGAIN;
3975
3976         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3977         channels = supp_band->channels;
3978         count = supp_band->n_channels;
3979
3980         len += sprintf(&buf[len],
3981                         "Displaying %d channels in 2.4GHz band "
3982                         "(802.11bg):\n", count);
3983
3984         for (i = 0; i < count; i++)
3985                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3986                                 ieee80211_frequency_to_channel(
3987                                 channels[i].center_freq),
3988                                 channels[i].max_power,
3989                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3990                                 " (IEEE 802.11h required)" : "",
3991                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3992                                 || (channels[i].flags &
3993                                 IEEE80211_CHAN_RADAR)) ? "" :
3994                                 ", IBSS",
3995                                 channels[i].flags &
3996                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3997                                 "passive only" : "active/passive");
3998
3999         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4000         channels = supp_band->channels;
4001         count = supp_band->n_channels;
4002
4003         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4004                         "(802.11a):\n", count);
4005
4006         for (i = 0; i < count; i++)
4007                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4008                                 ieee80211_frequency_to_channel(
4009                                 channels[i].center_freq),
4010                                 channels[i].max_power,
4011                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
4012                                 " (IEEE 802.11h required)" : "",
4013                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4014                                 || (channels[i].flags &
4015                                 IEEE80211_CHAN_RADAR)) ? "" :
4016                                 ", IBSS",
4017                                 channels[i].flags &
4018                                 IEEE80211_CHAN_PASSIVE_SCAN ?
4019                                 "passive only" : "active/passive");
4020
4021         return len;
4022 }
4023
4024 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4025
4026 static ssize_t show_statistics(struct device *d,
4027                                struct device_attribute *attr, char *buf)
4028 {
4029         struct iwl_priv *priv = dev_get_drvdata(d);
4030         u32 size = sizeof(struct iwl_notif_statistics);
4031         u32 len = 0, ofs = 0;
4032         u8 *data = (u8 *)&priv->statistics;
4033         int rc = 0;
4034
4035         if (!iwl_is_alive(priv))
4036                 return -EAGAIN;
4037
4038         mutex_lock(&priv->mutex);
4039         rc = iwl_send_statistics_request(priv, 0);
4040         mutex_unlock(&priv->mutex);
4041
4042         if (rc) {
4043                 len = sprintf(buf,
4044                               "Error sending statistics request: 0x%08X\n", rc);
4045                 return len;
4046         }
4047
4048         while (size && (PAGE_SIZE - len)) {
4049                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4050                                    PAGE_SIZE - len, 1);
4051                 len = strlen(buf);
4052                 if (PAGE_SIZE - len)
4053                         buf[len++] = '\n';
4054
4055                 ofs += 16;
4056                 size -= min(size, 16U);
4057         }
4058
4059         return len;
4060 }
4061
4062 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4063
4064 static ssize_t show_status(struct device *d,
4065                            struct device_attribute *attr, char *buf)
4066 {
4067         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4068         if (!iwl_is_alive(priv))
4069                 return -EAGAIN;
4070         return sprintf(buf, "0x%08x\n", (int)priv->status);
4071 }
4072
4073 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4074
4075 /*****************************************************************************
4076  *
4077  * driver setup and teardown
4078  *
4079  *****************************************************************************/
4080
4081 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4082 {
4083         priv->workqueue = create_workqueue(DRV_NAME);
4084
4085         init_waitqueue_head(&priv->wait_command_queue);
4086
4087         INIT_WORK(&priv->up, iwl4965_bg_up);
4088         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4089         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4090         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4091         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4092         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4093         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4094         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4095         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4096
4097         iwl_setup_scan_deferred_work(priv);
4098         iwl_setup_power_deferred_work(priv);
4099
4100         if (priv->cfg->ops->lib->setup_deferred_work)
4101                 priv->cfg->ops->lib->setup_deferred_work(priv);
4102
4103         init_timer(&priv->statistics_periodic);
4104         priv->statistics_periodic.data = (unsigned long)priv;
4105         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4106
4107         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4108                      iwl4965_irq_tasklet, (unsigned long)priv);
4109 }
4110
4111 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4112 {
4113         if (priv->cfg->ops->lib->cancel_deferred_work)
4114                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4115
4116         cancel_delayed_work_sync(&priv->init_alive_start);
4117         cancel_delayed_work(&priv->scan_check);
4118         cancel_delayed_work_sync(&priv->set_power_save);
4119         cancel_delayed_work(&priv->alive_start);
4120         cancel_work_sync(&priv->beacon_update);
4121         del_timer_sync(&priv->statistics_periodic);
4122 }
4123
4124 static struct attribute *iwl4965_sysfs_entries[] = {
4125         &dev_attr_channels.attr,
4126         &dev_attr_flags.attr,
4127         &dev_attr_filter_flags.attr,
4128 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4129         &dev_attr_measurement.attr,
4130 #endif
4131         &dev_attr_power_level.attr,
4132         &dev_attr_retry_rate.attr,
4133         &dev_attr_statistics.attr,
4134         &dev_attr_status.attr,
4135         &dev_attr_temperature.attr,
4136         &dev_attr_tx_power.attr,
4137 #ifdef CONFIG_IWLWIFI_DEBUG
4138         &dev_attr_debug_level.attr,
4139 #endif
4140         &dev_attr_version.attr,
4141
4142         NULL
4143 };
4144
4145 static struct attribute_group iwl4965_attribute_group = {
4146         .name = NULL,           /* put in device directory */
4147         .attrs = iwl4965_sysfs_entries,
4148 };
4149
4150 static struct ieee80211_ops iwl4965_hw_ops = {
4151         .tx = iwl4965_mac_tx,
4152         .start = iwl4965_mac_start,
4153         .stop = iwl4965_mac_stop,
4154         .add_interface = iwl4965_mac_add_interface,
4155         .remove_interface = iwl4965_mac_remove_interface,
4156         .config = iwl4965_mac_config,
4157         .config_interface = iwl4965_mac_config_interface,
4158         .configure_filter = iwl4965_configure_filter,
4159         .set_key = iwl4965_mac_set_key,
4160         .update_tkip_key = iwl4965_mac_update_tkip_key,
4161         .get_stats = iwl4965_mac_get_stats,
4162         .get_tx_stats = iwl4965_mac_get_tx_stats,
4163         .conf_tx = iwl4965_mac_conf_tx,
4164         .reset_tsf = iwl4965_mac_reset_tsf,
4165         .bss_info_changed = iwl4965_bss_info_changed,
4166         .ampdu_action = iwl4965_mac_ampdu_action,
4167         .hw_scan = iwl_mac_hw_scan
4168 };
4169
4170 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4171 {
4172         int err = 0;
4173         struct iwl_priv *priv;
4174         struct ieee80211_hw *hw;
4175         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4176         unsigned long flags;
4177         DECLARE_MAC_BUF(mac);
4178
4179         /************************
4180          * 1. Allocating HW data
4181          ************************/
4182
4183         /* Disabling hardware scan means that mac80211 will perform scans
4184          * "the hard way", rather than using device's scan. */
4185         if (cfg->mod_params->disable_hw_scan) {
4186                 if (cfg->mod_params->debug & IWL_DL_INFO)
4187                         dev_printk(KERN_DEBUG, &(pdev->dev),
4188                                    "Disabling hw_scan\n");
4189                 iwl4965_hw_ops.hw_scan = NULL;
4190         }
4191
4192         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4193         if (!hw) {
4194                 err = -ENOMEM;
4195                 goto out;
4196         }
4197         priv = hw->priv;
4198         /* At this point both hw and priv are allocated. */
4199
4200         SET_IEEE80211_DEV(hw, &pdev->dev);
4201
4202         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4203         priv->cfg = cfg;
4204         priv->pci_dev = pdev;
4205
4206 #ifdef CONFIG_IWLWIFI_DEBUG
4207         priv->debug_level = priv->cfg->mod_params->debug;
4208         atomic_set(&priv->restrict_refcnt, 0);
4209 #endif
4210
4211         /**************************
4212          * 2. Initializing PCI bus
4213          **************************/
4214         if (pci_enable_device(pdev)) {
4215                 err = -ENODEV;
4216                 goto out_ieee80211_free_hw;
4217         }
4218
4219         pci_set_master(pdev);
4220
4221         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4222         if (!err)
4223                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4224         if (err) {
4225                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4226                 if (!err)
4227                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4228                 /* both attempts failed: */
4229                 if (err) {
4230                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4231                                 DRV_NAME);
4232                         goto out_pci_disable_device;
4233                 }
4234         }
4235
4236         err = pci_request_regions(pdev, DRV_NAME);
4237         if (err)
4238                 goto out_pci_disable_device;
4239
4240         pci_set_drvdata(pdev, priv);
4241
4242
4243         /***********************
4244          * 3. Read REV register
4245          ***********************/
4246         priv->hw_base = pci_iomap(pdev, 0, 0);
4247         if (!priv->hw_base) {
4248                 err = -ENODEV;
4249                 goto out_pci_release_regions;
4250         }
4251
4252         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4253                 (unsigned long long) pci_resource_len(pdev, 0));
4254         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4255
4256         iwl_hw_detect(priv);
4257         printk(KERN_INFO DRV_NAME
4258                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4259                 priv->cfg->name, priv->hw_rev);
4260
4261         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4262          * PCI Tx retries from interfering with C3 CPU state */
4263         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4264
4265         /* amp init */
4266         err = priv->cfg->ops->lib->apm_ops.init(priv);
4267         if (err < 0) {
4268                 IWL_DEBUG_INFO("Failed to init APMG\n");
4269                 goto out_iounmap;
4270         }
4271         /*****************
4272          * 4. Read EEPROM
4273          *****************/
4274         /* Read the EEPROM */
4275         err = iwl_eeprom_init(priv);
4276         if (err) {
4277                 IWL_ERROR("Unable to init EEPROM\n");
4278                 goto out_iounmap;
4279         }
4280         err = iwl_eeprom_check_version(priv);
4281         if (err)
4282                 goto out_iounmap;
4283
4284         /* extract MAC Address */
4285         iwl_eeprom_get_mac(priv, priv->mac_addr);
4286         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4287         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4288
4289         /************************
4290          * 5. Setup HW constants
4291          ************************/
4292         if (iwl_set_hw_params(priv)) {
4293                 IWL_ERROR("failed to set hw parameters\n");
4294                 goto out_free_eeprom;
4295         }
4296
4297         /*******************
4298          * 6. Setup priv
4299          *******************/
4300
4301         err = iwl_init_drv(priv);
4302         if (err)
4303                 goto out_free_eeprom;
4304         /* At this point both hw and priv are initialized. */
4305
4306         /**********************************
4307          * 7. Initialize module parameters
4308          **********************************/
4309
4310         /* Disable radio (SW RF KILL) via parameter when loading driver */
4311         if (priv->cfg->mod_params->disable) {
4312                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4313                 IWL_DEBUG_INFO("Radio disabled.\n");
4314         }
4315
4316         /********************
4317          * 8. Setup services
4318          ********************/
4319         spin_lock_irqsave(&priv->lock, flags);
4320         iwl4965_disable_interrupts(priv);
4321         spin_unlock_irqrestore(&priv->lock, flags);
4322
4323         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4324         if (err) {
4325                 IWL_ERROR("failed to create sysfs device attributes\n");
4326                 goto out_uninit_drv;
4327         }
4328
4329
4330         iwl_setup_deferred_work(priv);
4331         iwl_setup_rx_handlers(priv);
4332
4333         /********************
4334          * 9. Conclude
4335          ********************/
4336         pci_save_state(pdev);
4337         pci_disable_device(pdev);
4338
4339         /**********************************
4340          * 10. Setup and register mac80211
4341          **********************************/
4342
4343         err = iwl_setup_mac(priv);
4344         if (err)
4345                 goto out_remove_sysfs;
4346
4347         err = iwl_dbgfs_register(priv, DRV_NAME);
4348         if (err)
4349                 IWL_ERROR("failed to create debugfs files\n");
4350
4351         err = iwl_rfkill_init(priv);
4352         if (err)
4353                 IWL_ERROR("Unable to initialize RFKILL system. "
4354                                   "Ignoring error: %d\n", err);
4355         iwl_power_initialize(priv);
4356         return 0;
4357
4358  out_remove_sysfs:
4359         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4360  out_uninit_drv:
4361         iwl_uninit_drv(priv);
4362  out_free_eeprom:
4363         iwl_eeprom_free(priv);
4364  out_iounmap:
4365         pci_iounmap(pdev, priv->hw_base);
4366  out_pci_release_regions:
4367         pci_release_regions(pdev);
4368         pci_set_drvdata(pdev, NULL);
4369  out_pci_disable_device:
4370         pci_disable_device(pdev);
4371  out_ieee80211_free_hw:
4372         ieee80211_free_hw(priv->hw);
4373  out:
4374         return err;
4375 }
4376
4377 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4378 {
4379         struct iwl_priv *priv = pci_get_drvdata(pdev);
4380         unsigned long flags;
4381
4382         if (!priv)
4383                 return;
4384
4385         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4386
4387         iwl_dbgfs_unregister(priv);
4388         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4389
4390         /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4391          * to be called and iwl4965_down since we are removing the device
4392          * we need to set STATUS_EXIT_PENDING bit.
4393          */
4394         set_bit(STATUS_EXIT_PENDING, &priv->status);
4395         if (priv->mac80211_registered) {
4396                 ieee80211_unregister_hw(priv->hw);
4397                 priv->mac80211_registered = 0;
4398         } else {
4399                 iwl4965_down(priv);
4400         }
4401
4402         /* make sure we flush any pending irq or
4403          * tasklet for the driver
4404          */
4405         spin_lock_irqsave(&priv->lock, flags);
4406         iwl4965_disable_interrupts(priv);
4407         spin_unlock_irqrestore(&priv->lock, flags);
4408
4409         iwl_synchronize_irq(priv);
4410
4411         iwl_rfkill_unregister(priv);
4412         iwl4965_dealloc_ucode_pci(priv);
4413
4414         if (priv->rxq.bd)
4415                 iwl_rx_queue_free(priv, &priv->rxq);
4416         iwl_hw_txq_ctx_free(priv);
4417
4418         iwl_clear_stations_table(priv);
4419         iwl_eeprom_free(priv);
4420
4421
4422         /*netif_stop_queue(dev); */
4423         flush_workqueue(priv->workqueue);
4424
4425         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4426          * priv->workqueue... so we can't take down the workqueue
4427          * until now... */
4428         destroy_workqueue(priv->workqueue);
4429         priv->workqueue = NULL;
4430
4431         pci_iounmap(pdev, priv->hw_base);
4432         pci_release_regions(pdev);
4433         pci_disable_device(pdev);
4434         pci_set_drvdata(pdev, NULL);
4435
4436         iwl_uninit_drv(priv);
4437
4438         if (priv->ibss_beacon)
4439                 dev_kfree_skb(priv->ibss_beacon);
4440
4441         ieee80211_free_hw(priv->hw);
4442 }
4443
4444 #ifdef CONFIG_PM
4445
4446 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4447 {
4448         struct iwl_priv *priv = pci_get_drvdata(pdev);
4449
4450         if (priv->is_open) {
4451                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4452                 iwl4965_mac_stop(priv->hw);
4453                 priv->is_open = 1;
4454         }
4455
4456         pci_set_power_state(pdev, PCI_D3hot);
4457
4458         return 0;
4459 }
4460
4461 static int iwl4965_pci_resume(struct pci_dev *pdev)
4462 {
4463         struct iwl_priv *priv = pci_get_drvdata(pdev);
4464
4465         pci_set_power_state(pdev, PCI_D0);
4466
4467         if (priv->is_open)
4468                 iwl4965_mac_start(priv->hw);
4469
4470         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4471         return 0;
4472 }
4473
4474 #endif /* CONFIG_PM */
4475
4476 /*****************************************************************************
4477  *
4478  * driver and module entry point
4479  *
4480  *****************************************************************************/
4481
4482 /* Hardware specific file defines the PCI IDs table for that hardware module */
4483 static struct pci_device_id iwl_hw_card_ids[] = {
4484 #ifdef CONFIG_IWL4965
4485         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4486         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4487 #endif /* CONFIG_IWL4965 */
4488 #ifdef CONFIG_IWL5000
4489         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4490         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4491         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4492         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4493         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4494         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4495         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4496         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4497         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4498         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4499 /* 5350 WiFi/WiMax */
4500         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4501         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4502         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4503 #endif /* CONFIG_IWL5000 */
4504         {0}
4505 };
4506 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4507
4508 static struct pci_driver iwl_driver = {
4509         .name = DRV_NAME,
4510         .id_table = iwl_hw_card_ids,
4511         .probe = iwl4965_pci_probe,
4512         .remove = __devexit_p(iwl4965_pci_remove),
4513 #ifdef CONFIG_PM
4514         .suspend = iwl4965_pci_suspend,
4515         .resume = iwl4965_pci_resume,
4516 #endif
4517 };
4518
4519 static int __init iwl4965_init(void)
4520 {
4521
4522         int ret;
4523         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4524         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4525
4526         ret = iwlagn_rate_control_register();
4527         if (ret) {
4528                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4529                 return ret;
4530         }
4531
4532         ret = pci_register_driver(&iwl_driver);
4533         if (ret) {
4534                 IWL_ERROR("Unable to initialize PCI module\n");
4535                 goto error_register;
4536         }
4537
4538         return ret;
4539
4540 error_register:
4541         iwlagn_rate_control_unregister();
4542         return ret;
4543 }
4544
4545 static void __exit iwl4965_exit(void)
4546 {
4547         pci_unregister_driver(&iwl_driver);
4548         iwlagn_rate_control_unregister();
4549 }
4550
4551 module_exit(iwl4965_exit);
4552 module_init(iwl4965_init);