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/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89 MODULE_ALIAS("iwl4965");
  90
  91 /*************** STATION TABLE MANAGEMENT ****
  92  * mac80211 should be examined to determine if sta_info is duplicating
  93  * the functionality provided here
  94  */
  95
  96 /**************************************************************/
  97
  98
  99
 100 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 101 {
 102         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 103
 104         if (hw_decrypt)
 105                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 106         else
 107                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 108
 109 }
 110
 111 /**
 112  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 113  *
 114  * NOTE:  This is really only useful during development and can eventually
 115  * be #ifdef'd out once the driver is stable and folks aren't actively
 116  * making changes
 117  */
 118 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 119 {
 120         int error = 0;
 121         int counter = 1;
 122
 123         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 124                 error |= le32_to_cpu(rxon->flags &
 125                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 126                                  RXON_FLG_RADAR_DETECT_MSK));
 127                 if (error)
 128                         IWL_WARNING("check 24G fields %d | %d\n",
 129                                     counter++, error);
 130         } else {
 131                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 132                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 133                 if (error)
 134                         IWL_WARNING("check 52 fields %d | %d\n",
 135                                     counter++, error);
 136                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 137                 if (error)
 138                         IWL_WARNING("check 52 CCK %d | %d\n",
 139                                     counter++, error);
 140         }
 141         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 142         if (error)
 143                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 144
 145         /* make sure basic rates 6Mbps and 1Mbps are supported */
 146         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 147                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 148         if (error)
 149                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 150
 151         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 152         if (error)
 153                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 154
 155         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 156                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 157         if (error)
 158                 IWL_WARNING("check CCK and short slot %d | %d\n",
 159                             counter++, error);
 160
 161         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 162                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 163         if (error)
 164                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 165                             counter++, error);
 166
 167         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 168                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 169         if (error)
 170                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 171                             counter++, error);
 172
 173         if (error)
 174                 IWL_WARNING("Tuning to channel %d\n",
 175                             le16_to_cpu(rxon->channel));
 176
 177         if (error) {
 178                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 179                 return -1;
 180         }
 181         return 0;
 182 }
 183
 184 /**
 185  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 186  * @priv: staging_rxon is compared to active_rxon
 187  *
 188  * If the RXON structure is changing enough to require a new tune,
 189  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 190  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 191  */
 192 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 193 {
 194
 195         /* These items are only settable from the full RXON command */
 196         if (!(iwl_is_associated(priv)) ||
 197             compare_ether_addr(priv->staging_rxon.bssid_addr,
 198                                priv->active_rxon.bssid_addr) ||
 199             compare_ether_addr(priv->staging_rxon.node_addr,
 200                                priv->active_rxon.node_addr) ||
 201             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 202                                priv->active_rxon.wlap_bssid_addr) ||
 203             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 204             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 205             (priv->staging_rxon.air_propagation !=
 206              priv->active_rxon.air_propagation) ||
 207             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 208              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 209             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 210              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 211             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 212             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 213                 return 1;
 214
 215         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 216          * be updated with the RXON_ASSOC command -- however only some
 217          * flag transitions are allowed using RXON_ASSOC */
 218
 219         /* Check if we are not switching bands */
 220         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 221             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 222                 return 1;
 223
 224         /* Check if we are switching association toggle */
 225         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 226                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 227                 return 1;
 228
 229         return 0;
 230 }
 231
 232 /**
 233  * iwl4965_commit_rxon - commit staging_rxon to hardware
 234  *
 235  * The RXON command in staging_rxon is committed to the hardware and
 236  * the active_rxon structure is updated with the new data.  This
 237  * function correctly transitions out of the RXON_ASSOC_MSK state if
 238  * a HW tune is required based on the RXON structure changes.
 239  */
 240 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 241 {
 242         /* cast away the const for active_rxon in this function */
 243         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 244         DECLARE_MAC_BUF(mac);
 245         int ret;
 246         bool new_assoc =
 247                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 248
 249         if (!iwl_is_alive(priv))
 250                 return -EBUSY;
 251
 252         /* always get timestamp with Rx frame */
 253         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 254         /* allow CTS-to-self if possible. this is relevant only for
 255          * 5000, but will not damage 4965 */
 256         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 257
 258         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 259         if (ret) {
 260                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 261                 return -EINVAL;
 262         }
 263
 264         /* If we don't need to send a full RXON, we can use
 265          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 266          * and other flags for the current radio configuration. */
 267         if (!iwl4965_full_rxon_required(priv)) {
 268                 ret = iwl_send_rxon_assoc(priv);
 269                 if (ret) {
 270                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 271                         return ret;
 272                 }
 273
 274                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 275                 return 0;
 276         }
 277
 278         /* station table will be cleared */
 279         priv->assoc_station_added = 0;
 280
 281         /* If we are currently associated and the new config requires
 282          * an RXON_ASSOC and the new config wants the associated mask enabled,
 283          * we must clear the associated from the active configuration
 284          * before we apply the new config */
 285         if (iwl_is_associated(priv) && new_assoc) {
 286                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 287                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 288
 289                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 290                                       sizeof(struct iwl_rxon_cmd),
 291                                       &priv->active_rxon);
 292
 293                 /* If the mask clearing failed then we set
 294                  * active_rxon back to what it was previously */
 295                 if (ret) {
 296                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 297                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 298                         return ret;
 299                 }
 300         }
 301
 302         IWL_DEBUG_INFO("Sending RXON\n"
 303                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 304                        "* channel = %d\n"
 305                        "* bssid = %s\n",
 306                        (new_assoc ? "" : "out"),
 307                        le16_to_cpu(priv->staging_rxon.channel),
 308                        print_mac(mac, priv->staging_rxon.bssid_addr));
 309
 310         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 311
 312         /* Apply the new configuration
 313          * RXON unassoc clears the station table in uCode, send it before
 314          * we add the bcast station. If assoc bit is set, we will send RXON
 315          * after having added the bcast and bssid station.
 316          */
 317         if (!new_assoc) {
 318                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 319                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 320                 if (ret) {
 321                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 322                         return ret;
 323                 }
 324                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 325         }
 326
 327         iwl_clear_stations_table(priv);
 328
 329         if (!priv->error_recovering)
 330                 priv->start_calib = 0;
 331
 332         /* Add the broadcast address so we can send broadcast frames */
 333         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 334                                                 IWL_INVALID_STATION) {
 335                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 336                 return -EIO;
 337         }
 338
 339         /* If we have set the ASSOC_MSK and we are in BSS mode then
 340          * add the IWL_AP_ID to the station rate table */
 341         if (new_assoc) {
 342                 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 343                         ret = iwl_rxon_add_station(priv,
 344                                            priv->active_rxon.bssid_addr, 1);
 345                         if (ret == IWL_INVALID_STATION) {
 346                                 IWL_ERROR("Error adding AP address for TX.\n");
 347                                 return -EIO;
 348                         }
 349                         priv->assoc_station_added = 1;
 350                         if (priv->default_wep_key &&
 351                             iwl_send_static_wepkey_cmd(priv, 0))
 352                                 IWL_ERROR("Could not send WEP static key.\n");
 353                 }
 354
 355                 /* Apply the new configuration
 356                  * RXON assoc doesn't clear the station table in uCode,
 357                  */
 358                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 359                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 360                 if (ret) {
 361                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 362                         return ret;
 363                 }
 364                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 365         }
 366
 367         iwl_init_sensitivity(priv);
 368
 369         /* If we issue a new RXON command which required a tune then we must
 370          * send a new TXPOWER command or we won't be able to Tx any frames */
 371         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 372         if (ret) {
 373                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 374                 return ret;
 375         }
 376
 377         return 0;
 378 }
 379
 380 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 381 {
 382
 383         iwl_set_rxon_chain(priv);
 384         iwl4965_commit_rxon(priv);
 385 }
 386
 387 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 388 {
 389         struct iwl4965_bt_cmd bt_cmd = {
 390                 .flags = 3,
 391                 .lead_time = 0xAA,
 392                 .max_kill = 1,
 393                 .kill_ack_mask = 0,
 394                 .kill_cts_mask = 0,
 395         };
 396
 397         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 398                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 399 }
 400
 401 static void iwl_clear_free_frames(struct iwl_priv *priv)
 402 {
 403         struct list_head *element;
 404
 405         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 406                        priv->frames_count);
 407
 408         while (!list_empty(&priv->free_frames)) {
 409                 element = priv->free_frames.next;
 410                 list_del(element);
 411                 kfree(list_entry(element, struct iwl_frame, list));
 412                 priv->frames_count--;
 413         }
 414
 415         if (priv->frames_count) {
 416                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 417                             priv->frames_count);
 418                 priv->frames_count = 0;
 419         }
 420 }
 421
 422 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 423 {
 424         struct iwl_frame *frame;
 425         struct list_head *element;
 426         if (list_empty(&priv->free_frames)) {
 427                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 428                 if (!frame) {
 429                         IWL_ERROR("Could not allocate frame!\n");
 430                         return NULL;
 431                 }
 432
 433                 priv->frames_count++;
 434                 return frame;
 435         }
 436
 437         element = priv->free_frames.next;
 438         list_del(element);
 439         return list_entry(element, struct iwl_frame, list);
 440 }
 441
 442 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 443 {
 444         memset(frame, 0, sizeof(*frame));
 445         list_add(&frame->list, &priv->free_frames);
 446 }
 447
 448 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 449                                           struct ieee80211_hdr *hdr,
 450                                           const u8 *dest, int left)
 451 {
 452         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 453             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 454              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 455                 return 0;
 456
 457         if (priv->ibss_beacon->len > left)
 458                 return 0;
 459
 460         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 461
 462         return priv->ibss_beacon->len;
 463 }
 464
 465 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 466 {
 467         int i;
 468         int rate_mask;
 469
 470         /* Set rate mask*/
 471         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 472                 rate_mask = priv->active_rate_basic & 0xF;
 473         else
 474                 rate_mask = priv->active_rate_basic & 0xFF0;
 475
 476         /* Find lowest valid rate */
 477         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 478                                         i = iwl_rates[i].next_ieee) {
 479                 if (rate_mask & (1 << i))
 480                         return iwl_rates[i].plcp;
 481         }
 482
 483         /* No valid rate was found. Assign the lowest one */
 484         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 485                 return IWL_RATE_1M_PLCP;
 486         else
 487                 return IWL_RATE_6M_PLCP;
 488 }
 489
 490 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
 491                                        struct iwl_frame *frame, u8 rate)
 492 {
 493         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 494         unsigned int frame_size;
 495
 496         tx_beacon_cmd = &frame->u.beacon;
 497         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 498
 499         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 500         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 501
 502         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 503                                 iwl_bcast_addr,
 504                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 505
 506         BUG_ON(frame_size > MAX_MPDU_SIZE);
 507         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 508
 509         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 510                 tx_beacon_cmd->tx.rate_n_flags =
 511                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 512         else
 513                 tx_beacon_cmd->tx.rate_n_flags =
 514                         iwl_hw_set_rate_n_flags(rate, 0);
 515
 516         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 517                                      TX_CMD_FLG_TSF_MSK |
 518                                      TX_CMD_FLG_STA_RATE_MSK;
 519
 520         return sizeof(*tx_beacon_cmd) + frame_size;
 521 }
 522 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 523 {
 524         struct iwl_frame *frame;
 525         unsigned int frame_size;
 526         int rc;
 527         u8 rate;
 528
 529         frame = iwl_get_free_frame(priv);
 530
 531         if (!frame) {
 532                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 533                           "command.\n");
 534                 return -ENOMEM;
 535         }
 536
 537         rate = iwl4965_rate_get_lowest_plcp(priv);
 538
 539         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 540
 541         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 542                               &frame->u.cmd[0]);
 543
 544         iwl_free_frame(priv, frame);
 545
 546         return rc;
 547 }
 548
 549 /******************************************************************************
 550  *
 551  * Misc. internal state and helper functions
 552  *
 553  ******************************************************************************/
 554
 555 static void iwl4965_ht_conf(struct iwl_priv *priv,
 556                             struct ieee80211_bss_conf *bss_conf)
 557 {
 558         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 559         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 560         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 561
 562         IWL_DEBUG_MAC80211("enter: \n");
 563
 564         iwl_conf->is_ht = bss_conf->assoc_ht;
 565
 566         if (!iwl_conf->is_ht)
 567                 return;
 568
 569         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 570
 571         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 572                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 573         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 574                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 575
 576         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 577         iwl_conf->max_amsdu_size =
 578                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 579
 580         iwl_conf->supported_chan_width =
 581                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 582         iwl_conf->extension_chan_offset =
 583                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 584         /* If no above or below channel supplied disable FAT channel */
 585         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 586             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 587                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 588                 iwl_conf->supported_chan_width = 0;
 589         }
 590
 591         iwl_conf->tx_mimo_ps_mode =
 592                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 593         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 594
 595         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 596         iwl_conf->tx_chan_width =
 597                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 598         iwl_conf->ht_protection =
 599                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 600         iwl_conf->non_GF_STA_present =
 601                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 602
 603         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 604         IWL_DEBUG_MAC80211("leave\n");
 605 }
 606
 607 /*
 608  * QoS  support
 609 */
 610 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 611 {
 612         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 613                 return;
 614
 615         if (!priv->qos_data.qos_enable)
 616                 return;
 617
 618         priv->qos_data.def_qos_parm.qos_flags = 0;
 619
 620         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 621             !priv->qos_data.qos_cap.q_AP.txop_request)
 622                 priv->qos_data.def_qos_parm.qos_flags |=
 623                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 624         if (priv->qos_data.qos_active)
 625                 priv->qos_data.def_qos_parm.qos_flags |=
 626                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 627
 628         if (priv->current_ht_config.is_ht)
 629                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 630
 631         if (force || iwl_is_associated(priv)) {
 632                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 633                                 priv->qos_data.qos_active,
 634                                 priv->qos_data.def_qos_parm.qos_flags);
 635
 636                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 637                                        sizeof(struct iwl_qosparam_cmd),
 638                                        &priv->qos_data.def_qos_parm, NULL);
 639         }
 640 }
 641
 642 #define MAX_UCODE_BEACON_INTERVAL       4096
 643
 644 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 645 {
 646         u16 new_val = 0;
 647         u16 beacon_factor = 0;
 648
 649         beacon_factor =
 650             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 651                 / MAX_UCODE_BEACON_INTERVAL;
 652         new_val = beacon_val / beacon_factor;
 653
 654         return cpu_to_le16(new_val);
 655 }
 656
 657 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 658 {
 659         u64 interval_tm_unit;
 660         u64 tsf, result;
 661         unsigned long flags;
 662         struct ieee80211_conf *conf = NULL;
 663         u16 beacon_int = 0;
 664
 665         conf = ieee80211_get_hw_conf(priv->hw);
 666
 667         spin_lock_irqsave(&priv->lock, flags);
 668         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 669         priv->rxon_timing.timestamp.dw[0] =
 670                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 671
 672         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 673
 674         tsf = priv->timestamp;
 675
 676         beacon_int = priv->beacon_int;
 677         spin_unlock_irqrestore(&priv->lock, flags);
 678
 679         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 680                 if (beacon_int == 0) {
 681                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 682                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 683                 } else {
 684                         priv->rxon_timing.beacon_interval =
 685                                 cpu_to_le16(beacon_int);
 686                         priv->rxon_timing.beacon_interval =
 687                             iwl4965_adjust_beacon_interval(
 688                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 689                 }
 690
 691                 priv->rxon_timing.atim_window = 0;
 692         } else {
 693                 priv->rxon_timing.beacon_interval =
 694                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 695                 /* TODO: we need to get atim_window from upper stack
 696                  * for now we set to 0 */
 697                 priv->rxon_timing.atim_window = 0;
 698         }
 699
 700         interval_tm_unit =
 701                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 702         result = do_div(tsf, interval_tm_unit);
 703         priv->rxon_timing.beacon_init_val =
 704             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 705
 706         IWL_DEBUG_ASSOC
 707             ("beacon interval %d beacon timer %d beacon tim %d\n",
 708                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 709                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 710                 le16_to_cpu(priv->rxon_timing.atim_window));
 711 }
 712
 713 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 714                                    enum ieee80211_band band)
 715 {
 716         if (band == IEEE80211_BAND_5GHZ) {
 717                 priv->staging_rxon.flags &=
 718                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 719                       | RXON_FLG_CCK_MSK);
 720                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 721         } else {
 722                 /* Copied from iwl4965_post_associate() */
 723                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 724                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 725                 else
 726                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 727
 728                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 729                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 730
 731                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 732                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 733                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 734         }
 735 }
 736
 737 /*
 738  * initialize rxon structure with default values from eeprom
 739  */
 740 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 741 {
 742         const struct iwl_channel_info *ch_info;
 743
 744         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 745
 746         switch (priv->iw_mode) {
 747         case IEEE80211_IF_TYPE_AP:
 748                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 749                 break;
 750
 751         case IEEE80211_IF_TYPE_STA:
 752                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 753                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 754                 break;
 755
 756         case IEEE80211_IF_TYPE_IBSS:
 757                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 758                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 759                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 760                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 761                 break;
 762
 763         case IEEE80211_IF_TYPE_MNTR:
 764                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 765                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 766                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 767                 break;
 768         default:
 769                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 770                 break;
 771         }
 772
 773 #if 0
 774         /* TODO:  Figure out when short_preamble would be set and cache from
 775          * that */
 776         if (!hw_to_local(priv->hw)->short_preamble)
 777                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 778         else
 779                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 780 #endif
 781
 782         ch_info = iwl_get_channel_info(priv, priv->band,
 783                                        le16_to_cpu(priv->active_rxon.channel));
 784
 785         if (!ch_info)
 786                 ch_info = &priv->channel_info[0];
 787
 788         /*
 789          * in some case A channels are all non IBSS
 790          * in this case force B/G channel
 791          */
 792         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 793             !(is_channel_ibss(ch_info)))
 794                 ch_info = &priv->channel_info[0];
 795
 796         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 797         priv->band = ch_info->band;
 798
 799         iwl_set_flags_for_band(priv, priv->band);
 800
 801         priv->staging_rxon.ofdm_basic_rates =
 802             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 803         priv->staging_rxon.cck_basic_rates =
 804             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 805
 806         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 807                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 808         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 809         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 810         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 811         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 812         iwl_set_rxon_chain(priv);
 813 }
 814
 815 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 816 {
 817         priv->iw_mode = mode;
 818
 819         iwl4965_connection_init_rx_config(priv);
 820         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 821
 822         iwl_clear_stations_table(priv);
 823
 824         /* dont commit rxon if rf-kill is on*/
 825         if (!iwl_is_ready_rf(priv))
 826                 return -EAGAIN;
 827
 828         cancel_delayed_work(&priv->scan_check);
 829         if (iwl_scan_cancel_timeout(priv, 100)) {
 830                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 831                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 832                 return -EAGAIN;
 833         }
 834
 835         iwl4965_commit_rxon(priv);
 836
 837         return 0;
 838 }
 839
 840 static void iwl4965_set_rate(struct iwl_priv *priv)
 841 {
 842         const struct ieee80211_supported_band *hw = NULL;
 843         struct ieee80211_rate *rate;
 844         int i;
 845
 846         hw = iwl_get_hw_mode(priv, priv->band);
 847         if (!hw) {
 848                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 849                 return;
 850         }
 851
 852         priv->active_rate = 0;
 853         priv->active_rate_basic = 0;
 854
 855         for (i = 0; i < hw->n_bitrates; i++) {
 856                 rate = &(hw->bitrates[i]);
 857                 if (rate->hw_value < IWL_RATE_COUNT)
 858                         priv->active_rate |= (1 << rate->hw_value);
 859         }
 860
 861         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 862                        priv->active_rate, priv->active_rate_basic);
 863
 864         /*
 865          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 866          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 867          * OFDM
 868          */
 869         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 870                 priv->staging_rxon.cck_basic_rates =
 871                     ((priv->active_rate_basic &
 872                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 873         else
 874                 priv->staging_rxon.cck_basic_rates =
 875                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 876
 877         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 878                 priv->staging_rxon.ofdm_basic_rates =
 879                     ((priv->active_rate_basic &
 880                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 881                       IWL_FIRST_OFDM_RATE) & 0xFF;
 882         else
 883                 priv->staging_rxon.ofdm_basic_rates =
 884                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 885 }
 886
 887 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 888
 889 #include "iwl-spectrum.h"
 890
 891 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 892 #define BEACON_TIME_MASK_HIGH   0xFF000000
 893 #define TIME_UNIT               1024
 894
 895 /*
 896  * extended beacon time format
 897  * time in usec will be changed into a 32-bit value in 8:24 format
 898  * the high 1 byte is the beacon counts
 899  * the lower 3 bytes is the time in usec within one beacon interval
 900  */
 901
 902 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 903 {
 904         u32 quot;
 905         u32 rem;
 906         u32 interval = beacon_interval * 1024;
 907
 908         if (!interval || !usec)
 909                 return 0;
 910
 911         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 912         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 913
 914         return (quot << 24) + rem;
 915 }
 916
 917 /* base is usually what we get from ucode with each received frame,
 918  * the same as HW timer counter counting down
 919  */
 920
 921 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 922 {
 923         u32 base_low = base & BEACON_TIME_MASK_LOW;
 924         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 925         u32 interval = beacon_interval * TIME_UNIT;
 926         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 927             (addon & BEACON_TIME_MASK_HIGH);
 928
 929         if (base_low > addon_low)
 930                 res += base_low - addon_low;
 931         else if (base_low < addon_low) {
 932                 res += interval + base_low - addon_low;
 933                 res += (1 << 24);
 934         } else
 935                 res += (1 << 24);
 936
 937         return cpu_to_le32(res);
 938 }
 939
 940 static int iwl4965_get_measurement(struct iwl_priv *priv,
 941                                struct ieee80211_measurement_params *params,
 942                                u8 type)
 943 {
 944         struct iwl4965_spectrum_cmd spectrum;
 945         struct iwl_rx_packet *res;
 946         struct iwl_host_cmd cmd = {
 947                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 948                 .data = (void *)&spectrum,
 949                 .meta.flags = CMD_WANT_SKB,
 950         };
 951         u32 add_time = le64_to_cpu(params->start_time);
 952         int rc;
 953         int spectrum_resp_status;
 954         int duration = le16_to_cpu(params->duration);
 955
 956         if (iwl_is_associated(priv))
 957                 add_time =
 958                     iwl4965_usecs_to_beacons(
 959                         le64_to_cpu(params->start_time) - priv->last_tsf,
 960                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 961
 962         memset(&spectrum, 0, sizeof(spectrum));
 963
 964         spectrum.channel_count = cpu_to_le16(1);
 965         spectrum.flags =
 966             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 967         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 968         cmd.len = sizeof(spectrum);
 969         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 970
 971         if (iwl_is_associated(priv))
 972                 spectrum.start_time =
 973                     iwl4965_add_beacon_time(priv->last_beacon_time,
 974                                 add_time,
 975                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 976         else
 977                 spectrum.start_time = 0;
 978
 979         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 980         spectrum.channels[0].channel = params->channel;
 981         spectrum.channels[0].type = type;
 982         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 983                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 984                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 985
 986         rc = iwl_send_cmd_sync(priv, &cmd);
 987         if (rc)
 988                 return rc;
 989
 990         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 991         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 992                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 993                 rc = -EIO;
 994         }
 995
 996         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 997         switch (spectrum_resp_status) {
 998         case 0:         /* Command will be handled */
 999                 if (res->u.spectrum.id != 0xff) {
1000                         IWL_DEBUG_INFO
1001                             ("Replaced existing measurement: %d\n",
1002                              res->u.spectrum.id);
1003                         priv->measurement_status &= ~MEASUREMENT_READY;
1004                 }
1005                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1006                 rc = 0;
1007                 break;
1008
1009         case 1:         /* Command will not be handled */
1010                 rc = -EAGAIN;
1011                 break;
1012         }
1013
1014         dev_kfree_skb_any(cmd.meta.u.skb);
1015
1016         return rc;
1017 }
1018 #endif
1019
1020 /******************************************************************************
1021  *
1022  * Generic RX handler implementations
1023  *
1024  ******************************************************************************/
1025 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1026                                 struct iwl_rx_mem_buffer *rxb)
1027 {
1028         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1029         struct iwl_alive_resp *palive;
1030         struct delayed_work *pwork;
1031
1032         palive = &pkt->u.alive_frame;
1033
1034         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1035                        "0x%01X 0x%01X\n",
1036                        palive->is_valid, palive->ver_type,
1037                        palive->ver_subtype);
1038
1039         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1040                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1041                 memcpy(&priv->card_alive_init,
1042                        &pkt->u.alive_frame,
1043                        sizeof(struct iwl_init_alive_resp));
1044                 pwork = &priv->init_alive_start;
1045         } else {
1046                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1047                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1048                        sizeof(struct iwl_alive_resp));
1049                 pwork = &priv->alive_start;
1050         }
1051
1052         /* We delay the ALIVE response by 5ms to
1053          * give the HW RF Kill time to activate... */
1054         if (palive->is_valid == UCODE_VALID_OK)
1055                 queue_delayed_work(priv->workqueue, pwork,
1056                                    msecs_to_jiffies(5));
1057         else
1058                 IWL_WARNING("uCode did not respond OK.\n");
1059 }
1060
1061 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1062                                    struct iwl_rx_mem_buffer *rxb)
1063 {
1064         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1065
1066         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1067                 "seq 0x%04X ser 0x%08X\n",
1068                 le32_to_cpu(pkt->u.err_resp.error_type),
1069                 get_cmd_string(pkt->u.err_resp.cmd_id),
1070                 pkt->u.err_resp.cmd_id,
1071                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1072                 le32_to_cpu(pkt->u.err_resp.error_info));
1073 }
1074
1075 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1076
1077 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1078 {
1079         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1080         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1081         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1082         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1083                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1084         rxon->channel = csa->channel;
1085         priv->staging_rxon.channel = csa->channel;
1086 }
1087
1088 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1089                                           struct iwl_rx_mem_buffer *rxb)
1090 {
1091 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1092         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1093         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1094
1095         if (!report->state) {
1096                 IWL_DEBUG(IWL_DL_11H,
1097                         "Spectrum Measure Notification: Start\n");
1098                 return;
1099         }
1100
1101         memcpy(&priv->measure_report, report, sizeof(*report));
1102         priv->measurement_status |= MEASUREMENT_READY;
1103 #endif
1104 }
1105
1106 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1107                                       struct iwl_rx_mem_buffer *rxb)
1108 {
1109 #ifdef CONFIG_IWLWIFI_DEBUG
1110         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1111         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1112         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1113                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1114 #endif
1115 }
1116
1117 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1118                                              struct iwl_rx_mem_buffer *rxb)
1119 {
1120         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1121         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1122                         "notification for %s:\n",
1123                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1124         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1125 }
1126
1127 static void iwl4965_bg_beacon_update(struct work_struct *work)
1128 {
1129         struct iwl_priv *priv =
1130                 container_of(work, struct iwl_priv, beacon_update);
1131         struct sk_buff *beacon;
1132
1133         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1134         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1135
1136         if (!beacon) {
1137                 IWL_ERROR("update beacon failed\n");
1138                 return;
1139         }
1140
1141         mutex_lock(&priv->mutex);
1142         /* new beacon skb is allocated every time; dispose previous.*/
1143         if (priv->ibss_beacon)
1144                 dev_kfree_skb(priv->ibss_beacon);
1145
1146         priv->ibss_beacon = beacon;
1147         mutex_unlock(&priv->mutex);
1148
1149         iwl4965_send_beacon_cmd(priv);
1150 }
1151
1152 /**
1153  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1154  *
1155  * This callback is provided in order to send a statistics request.
1156  *
1157  * This timer function is continually reset to execute within
1158  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1159  * was received.  We need to ensure we receive the statistics in order
1160  * to update the temperature used for calibrating the TXPOWER.
1161  */
1162 static void iwl4965_bg_statistics_periodic(unsigned long data)
1163 {
1164         struct iwl_priv *priv = (struct iwl_priv *)data;
1165
1166         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1167                 return;
1168
1169         iwl_send_statistics_request(priv, CMD_ASYNC);
1170 }
1171
1172 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1173                                 struct iwl_rx_mem_buffer *rxb)
1174 {
1175 #ifdef CONFIG_IWLWIFI_DEBUG
1176         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1177         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1178         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1179
1180         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1181                 "tsf %d %d rate %d\n",
1182                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1183                 beacon->beacon_notify_hdr.failure_frame,
1184                 le32_to_cpu(beacon->ibss_mgr_status),
1185                 le32_to_cpu(beacon->high_tsf),
1186                 le32_to_cpu(beacon->low_tsf), rate);
1187 #endif
1188
1189         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1190             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1191                 queue_work(priv->workqueue, &priv->beacon_update);
1192 }
1193
1194 /* Handle notification from uCode that card's power state is changing
1195  * due to software, hardware, or critical temperature RFKILL */
1196 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1197                                     struct iwl_rx_mem_buffer *rxb)
1198 {
1199         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1200         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1201         unsigned long status = priv->status;
1202
1203         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1204                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1205                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1206
1207         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1208                      RF_CARD_DISABLED)) {
1209
1210                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1211                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1212
1213                 if (!iwl_grab_nic_access(priv)) {
1214                         iwl_write_direct32(
1215                                 priv, HBUS_TARG_MBX_C,
1216                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1217
1218                         iwl_release_nic_access(priv);
1219                 }
1220
1221                 if (!(flags & RXON_CARD_DISABLED)) {
1222                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1223                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1224                         if (!iwl_grab_nic_access(priv)) {
1225                                 iwl_write_direct32(
1226                                         priv, HBUS_TARG_MBX_C,
1227                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1228
1229                                 iwl_release_nic_access(priv);
1230                         }
1231                 }
1232
1233                 if (flags & RF_CARD_DISABLED) {
1234                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1235                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1236                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1237                         if (!iwl_grab_nic_access(priv))
1238                                 iwl_release_nic_access(priv);
1239                 }
1240         }
1241
1242         if (flags & HW_CARD_DISABLED)
1243                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1244         else
1245                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1246
1247
1248         if (flags & SW_CARD_DISABLED)
1249                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1250         else
1251                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1252
1253         if (!(flags & RXON_CARD_DISABLED))
1254                 iwl_scan_cancel(priv);
1255
1256         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1257              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1258             (test_bit(STATUS_RF_KILL_SW, &status) !=
1259              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1260                 queue_work(priv->workqueue, &priv->rf_kill);
1261         else
1262                 wake_up_interruptible(&priv->wait_command_queue);
1263 }
1264
1265 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1266 {
1267         int ret;
1268         unsigned long flags;
1269
1270         spin_lock_irqsave(&priv->lock, flags);
1271         ret = iwl_grab_nic_access(priv);
1272         if (ret)
1273                 goto err;
1274
1275         if (src == IWL_PWR_SRC_VAUX) {
1276                 u32 val;
1277                 ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
1278                                             &val);
1279
1280                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1281                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1283                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1284         } else {
1285                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1286                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1287                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1288         }
1289
1290         iwl_release_nic_access(priv);
1291 err:
1292         spin_unlock_irqrestore(&priv->lock, flags);
1293         return ret;
1294 }
1295
1296 /**
1297  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1298  *
1299  * Setup the RX handlers for each of the reply types sent from the uCode
1300  * to the host.
1301  *
1302  * This function chains into the hardware specific files for them to setup
1303  * any hardware specific handlers as well.
1304  */
1305 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1306 {
1307         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1308         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1309         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1310         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1311             iwl4965_rx_spectrum_measure_notif;
1312         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1313         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1314             iwl4965_rx_pm_debug_statistics_notif;
1315         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1316
1317         /*
1318          * The same handler is used for both the REPLY to a discrete
1319          * statistics request from the host as well as for the periodic
1320          * statistics notifications (after received beacons) from the uCode.
1321          */
1322         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1323         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1324
1325         iwl_setup_rx_scan_handlers(priv);
1326
1327         /* status change handler */
1328         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1329
1330         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1331             iwl_rx_missed_beacon_notif;
1332         /* Rx handlers */
1333         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1334         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1335         /* block ack */
1336         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1337         /* Set up hardware specific Rx handlers */
1338         priv->cfg->ops->lib->rx_handler_setup(priv);
1339 }
1340
1341 /*
1342  * this should be called while priv->lock is locked
1343 */
1344 static void __iwl_rx_replenish(struct iwl_priv *priv)
1345 {
1346         iwl_rx_allocate(priv);
1347         iwl_rx_queue_restock(priv);
1348 }
1349
1350
1351 /**
1352  * iwl_rx_handle - Main entry function for receiving responses from uCode
1353  *
1354  * Uses the priv->rx_handlers callback function array to invoke
1355  * the appropriate handlers, including command responses,
1356  * frame-received notifications, and other notifications.
1357  */
1358 void iwl_rx_handle(struct iwl_priv *priv)
1359 {
1360         struct iwl_rx_mem_buffer *rxb;
1361         struct iwl_rx_packet *pkt;
1362         struct iwl_rx_queue *rxq = &priv->rxq;
1363         u32 r, i;
1364         int reclaim;
1365         unsigned long flags;
1366         u8 fill_rx = 0;
1367         u32 count = 8;
1368
1369         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1370          * buffer that the driver may process (last buffer filled by ucode). */
1371         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1372         i = rxq->read;
1373
1374         /* Rx interrupt, but nothing sent from uCode */
1375         if (i == r)
1376                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1377
1378         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1379                 fill_rx = 1;
1380
1381         while (i != r) {
1382                 rxb = rxq->queue[i];
1383
1384                 /* If an RXB doesn't have a Rx queue slot associated with it,
1385                  * then a bug has been introduced in the queue refilling
1386                  * routines -- catch it here */
1387                 BUG_ON(rxb == NULL);
1388
1389                 rxq->queue[i] = NULL;
1390
1391                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1392                                             priv->hw_params.rx_buf_size,
1393                                             PCI_DMA_FROMDEVICE);
1394                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1395
1396                 /* Reclaim a command buffer only if this packet is a response
1397                  *   to a (driver-originated) command.
1398                  * If the packet (e.g. Rx frame) originated from uCode,
1399                  *   there is no command buffer to reclaim.
1400                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1401                  *   but apparently a few don't get set; catch them here. */
1402                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1403                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1404                         (pkt->hdr.cmd != REPLY_RX) &&
1405                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1406                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1407                         (pkt->hdr.cmd != REPLY_TX);
1408
1409                 /* Based on type of command response or notification,
1410                  *   handle those that need handling via function in
1411                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1412                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1413                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1414                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1415                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1416                 } else {
1417                         /* No handling needed */
1418                         IWL_DEBUG(IWL_DL_RX,
1419                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1420                                 r, i, get_cmd_string(pkt->hdr.cmd),
1421                                 pkt->hdr.cmd);
1422                 }
1423
1424                 if (reclaim) {
1425                         /* Invoke any callbacks, transfer the skb to caller, and
1426                          * fire off the (possibly) blocking iwl_send_cmd()
1427                          * as we reclaim the driver command queue */
1428                         if (rxb && rxb->skb)
1429                                 iwl_tx_cmd_complete(priv, rxb);
1430                         else
1431                                 IWL_WARNING("Claim null rxb?\n");
1432                 }
1433
1434                 /* For now we just don't re-use anything.  We can tweak this
1435                  * later to try and re-use notification packets and SKBs that
1436                  * fail to Rx correctly */
1437                 if (rxb->skb != NULL) {
1438                         priv->alloc_rxb_skb--;
1439                         dev_kfree_skb_any(rxb->skb);
1440                         rxb->skb = NULL;
1441                 }
1442
1443                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1444                                  priv->hw_params.rx_buf_size,
1445                                  PCI_DMA_FROMDEVICE);
1446                 spin_lock_irqsave(&rxq->lock, flags);
1447                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1448                 spin_unlock_irqrestore(&rxq->lock, flags);
1449                 i = (i + 1) & RX_QUEUE_MASK;
1450                 /* If there are a lot of unused frames,
1451                  * restock the Rx queue so ucode wont assert. */
1452                 if (fill_rx) {
1453                         count++;
1454                         if (count >= 8) {
1455                                 priv->rxq.read = i;
1456                                 __iwl_rx_replenish(priv);
1457                                 count = 0;
1458                         }
1459                 }
1460         }
1461
1462         /* Backtrack one entry */
1463         priv->rxq.read = i;
1464         iwl_rx_queue_restock(priv);
1465 }
1466
1467 #ifdef CONFIG_IWLWIFI_DEBUG
1468 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1469 {
1470         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1471         DECLARE_MAC_BUF(mac);
1472
1473         IWL_DEBUG_RADIO("RX CONFIG:\n");
1474         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1475         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1476         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1477         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1478                         le32_to_cpu(rxon->filter_flags));
1479         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1480         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1481                         rxon->ofdm_basic_rates);
1482         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1483         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1484                         print_mac(mac, rxon->node_addr));
1485         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1486                         print_mac(mac, rxon->bssid_addr));
1487         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1488 }
1489 #endif
1490
1491 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1492 {
1493         IWL_DEBUG_ISR("Enabling interrupts\n");
1494         set_bit(STATUS_INT_ENABLED, &priv->status);
1495         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1496 }
1497
1498 /* call this function to flush any scheduled tasklet */
1499 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1500 {
1501         /* wait to make sure we flush pedding tasklet*/
1502         synchronize_irq(priv->pci_dev->irq);
1503         tasklet_kill(&priv->irq_tasklet);
1504 }
1505
1506 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1507 {
1508         clear_bit(STATUS_INT_ENABLED, &priv->status);
1509
1510         /* disable interrupts from uCode/NIC to host */
1511         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1512
1513         /* acknowledge/clear/reset any interrupts still pending
1514          * from uCode or flow handler (Rx/Tx DMA) */
1515         iwl_write32(priv, CSR_INT, 0xffffffff);
1516         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1517         IWL_DEBUG_ISR("Disabled interrupts\n");
1518 }
1519
1520
1521 /**
1522  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1523  */
1524 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1525 {
1526         /* Set the FW error flag -- cleared on iwl4965_down */
1527         set_bit(STATUS_FW_ERROR, &priv->status);
1528
1529         /* Cancel currently queued command. */
1530         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1531
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1534                 iwl_dump_nic_error_log(priv);
1535                 iwl_dump_nic_event_log(priv);
1536                 iwl4965_print_rx_config_cmd(priv);
1537         }
1538 #endif
1539
1540         wake_up_interruptible(&priv->wait_command_queue);
1541
1542         /* Keep the restart process from trying to send host
1543          * commands by clearing the INIT status bit */
1544         clear_bit(STATUS_READY, &priv->status);
1545
1546         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1547                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1548                           "Restarting adapter due to uCode error.\n");
1549
1550                 if (iwl_is_associated(priv)) {
1551                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1552                                sizeof(priv->recovery_rxon));
1553                         priv->error_recovering = 1;
1554                 }
1555                 if (priv->cfg->mod_params->restart_fw)
1556                         queue_work(priv->workqueue, &priv->restart);
1557         }
1558 }
1559
1560 static void iwl4965_error_recovery(struct iwl_priv *priv)
1561 {
1562         unsigned long flags;
1563
1564         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1565                sizeof(priv->staging_rxon));
1566         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1567         iwl4965_commit_rxon(priv);
1568
1569         iwl_rxon_add_station(priv, priv->bssid, 1);
1570
1571         spin_lock_irqsave(&priv->lock, flags);
1572         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1573         priv->error_recovering = 0;
1574         spin_unlock_irqrestore(&priv->lock, flags);
1575 }
1576
1577 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1578 {
1579         u32 inta, handled = 0;
1580         u32 inta_fh;
1581         unsigned long flags;
1582 #ifdef CONFIG_IWLWIFI_DEBUG
1583         u32 inta_mask;
1584 #endif
1585
1586         spin_lock_irqsave(&priv->lock, flags);
1587
1588         /* Ack/clear/reset pending uCode interrupts.
1589          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1590          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1591         inta = iwl_read32(priv, CSR_INT);
1592         iwl_write32(priv, CSR_INT, inta);
1593
1594         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1595          * Any new interrupts that happen after this, either while we're
1596          * in this tasklet, or later, will show up in next ISR/tasklet. */
1597         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1598         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1599
1600 #ifdef CONFIG_IWLWIFI_DEBUG
1601         if (priv->debug_level & IWL_DL_ISR) {
1602                 /* just for debug */
1603                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1604                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1605                               inta, inta_mask, inta_fh);
1606         }
1607 #endif
1608
1609         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1610          * atomic, make sure that inta covers all the interrupts that
1611          * we've discovered, even if FH interrupt came in just after
1612          * reading CSR_INT. */
1613         if (inta_fh & CSR49_FH_INT_RX_MASK)
1614                 inta |= CSR_INT_BIT_FH_RX;
1615         if (inta_fh & CSR49_FH_INT_TX_MASK)
1616                 inta |= CSR_INT_BIT_FH_TX;
1617
1618         /* Now service all interrupt bits discovered above. */
1619         if (inta & CSR_INT_BIT_HW_ERR) {
1620                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1621
1622                 /* Tell the device to stop sending interrupts */
1623                 iwl4965_disable_interrupts(priv);
1624
1625                 iwl4965_irq_handle_error(priv);
1626
1627                 handled |= CSR_INT_BIT_HW_ERR;
1628
1629                 spin_unlock_irqrestore(&priv->lock, flags);
1630
1631                 return;
1632         }
1633
1634 #ifdef CONFIG_IWLWIFI_DEBUG
1635         if (priv->debug_level & (IWL_DL_ISR)) {
1636                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1637                 if (inta & CSR_INT_BIT_SCD)
1638                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1639                                       "the frame/frames.\n");
1640
1641                 /* Alive notification via Rx interrupt will do the real work */
1642                 if (inta & CSR_INT_BIT_ALIVE)
1643                         IWL_DEBUG_ISR("Alive interrupt\n");
1644         }
1645 #endif
1646         /* Safely ignore these bits for debug checks below */
1647         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1648
1649         /* HW RF KILL switch toggled */
1650         if (inta & CSR_INT_BIT_RF_KILL) {
1651                 int hw_rf_kill = 0;
1652                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1653                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1654                         hw_rf_kill = 1;
1655
1656                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1657                                 hw_rf_kill ? "disable radio":"enable radio");
1658
1659                 /* driver only loads ucode once setting the interface up.
1660                  * the driver as well won't allow loading if RFKILL is set
1661                  * therefore no need to restart the driver from this handler
1662                  */
1663                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1664                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1665
1666                 handled |= CSR_INT_BIT_RF_KILL;
1667         }
1668
1669         /* Chip got too hot and stopped itself */
1670         if (inta & CSR_INT_BIT_CT_KILL) {
1671                 IWL_ERROR("Microcode CT kill error detected.\n");
1672                 handled |= CSR_INT_BIT_CT_KILL;
1673         }
1674
1675         /* Error detected by uCode */
1676         if (inta & CSR_INT_BIT_SW_ERR) {
1677                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1678                           inta);
1679                 iwl4965_irq_handle_error(priv);
1680                 handled |= CSR_INT_BIT_SW_ERR;
1681         }
1682
1683         /* uCode wakes up after power-down sleep */
1684         if (inta & CSR_INT_BIT_WAKEUP) {
1685                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1686                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1687                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1688                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1689                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1690                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1691                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1692                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1693
1694                 handled |= CSR_INT_BIT_WAKEUP;
1695         }
1696
1697         /* All uCode command responses, including Tx command responses,
1698          * Rx "responses" (frame-received notification), and other
1699          * notifications from uCode come through here*/
1700         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1701                 iwl_rx_handle(priv);
1702                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1703         }
1704
1705         if (inta & CSR_INT_BIT_FH_TX) {
1706                 IWL_DEBUG_ISR("Tx interrupt\n");
1707                 handled |= CSR_INT_BIT_FH_TX;
1708                 /* FH finished to write, send event */
1709                 priv->ucode_write_complete = 1;
1710                 wake_up_interruptible(&priv->wait_command_queue);
1711         }
1712
1713         if (inta & ~handled)
1714                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1715
1716         if (inta & ~CSR_INI_SET_MASK) {
1717                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1718                          inta & ~CSR_INI_SET_MASK);
1719                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1720         }
1721
1722         /* Re-enable all interrupts */
1723         /* only Re-enable if diabled by irq */
1724         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1725                 iwl4965_enable_interrupts(priv);
1726
1727 #ifdef CONFIG_IWLWIFI_DEBUG
1728         if (priv->debug_level & (IWL_DL_ISR)) {
1729                 inta = iwl_read32(priv, CSR_INT);
1730                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1731                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1732                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1733                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1734         }
1735 #endif
1736         spin_unlock_irqrestore(&priv->lock, flags);
1737 }
1738
1739 static irqreturn_t iwl4965_isr(int irq, void *data)
1740 {
1741         struct iwl_priv *priv = data;
1742         u32 inta, inta_mask;
1743         u32 inta_fh;
1744         if (!priv)
1745                 return IRQ_NONE;
1746
1747         spin_lock(&priv->lock);
1748
1749         /* Disable (but don't clear!) interrupts here to avoid
1750          *    back-to-back ISRs and sporadic interrupts from our NIC.
1751          * If we have something to service, the tasklet will re-enable ints.
1752          * If we *don't* have something, we'll re-enable before leaving here. */
1753         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1754         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1755
1756         /* Discover which interrupts are active/pending */
1757         inta = iwl_read32(priv, CSR_INT);
1758         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1759
1760         /* Ignore interrupt if there's nothing in NIC to service.
1761          * This may be due to IRQ shared with another device,
1762          * or due to sporadic interrupts thrown from our NIC. */
1763         if (!inta && !inta_fh) {
1764                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1765                 goto none;
1766         }
1767
1768         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1769                 /* Hardware disappeared. It might have already raised
1770                  * an interrupt */
1771                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1772                 goto unplugged;
1773         }
1774
1775         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1776                       inta, inta_mask, inta_fh);
1777
1778         inta &= ~CSR_INT_BIT_SCD;
1779
1780         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1781         if (likely(inta || inta_fh))
1782                 tasklet_schedule(&priv->irq_tasklet);
1783
1784  unplugged:
1785         spin_unlock(&priv->lock);
1786         return IRQ_HANDLED;
1787
1788  none:
1789         /* re-enable interrupts here since we don't have anything to service. */
1790         /* only Re-enable if diabled by irq */
1791         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1792                 iwl4965_enable_interrupts(priv);
1793         spin_unlock(&priv->lock);
1794         return IRQ_NONE;
1795 }
1796
1797 /******************************************************************************
1798  *
1799  * uCode download functions
1800  *
1801  ******************************************************************************/
1802
1803 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1804 {
1805         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1806         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1807         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1808         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1809         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1810         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1811 }
1812
1813 static void iwl4965_nic_start(struct iwl_priv *priv)
1814 {
1815         /* Remove all resets to allow NIC to operate */
1816         iwl_write32(priv, CSR_RESET, 0);
1817 }
1818
1819
1820 /**
1821  * iwl4965_read_ucode - Read uCode images from disk file.
1822  *
1823  * Copy into buffers for card to fetch via bus-mastering
1824  */
1825 static int iwl4965_read_ucode(struct iwl_priv *priv)
1826 {
1827         struct iwl_ucode *ucode;
1828         int ret;
1829         const struct firmware *ucode_raw;
1830         const char *name = priv->cfg->fw_name;
1831         u8 *src;
1832         size_t len;
1833         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1834
1835         /* Ask kernel firmware_class module to get the boot firmware off disk.
1836          * request_firmware() is synchronous, file is in memory on return. */
1837         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1838         if (ret < 0) {
1839                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1840                                         name, ret);
1841                 goto error;
1842         }
1843
1844         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1845                        name, ucode_raw->size);
1846
1847         /* Make sure that we got at least our header! */
1848         if (ucode_raw->size < sizeof(*ucode)) {
1849                 IWL_ERROR("File size way too small!\n");
1850                 ret = -EINVAL;
1851                 goto err_release;
1852         }
1853
1854         /* Data from ucode file:  header followed by uCode images */
1855         ucode = (void *)ucode_raw->data;
1856
1857         ver = le32_to_cpu(ucode->ver);
1858         inst_size = le32_to_cpu(ucode->inst_size);
1859         data_size = le32_to_cpu(ucode->data_size);
1860         init_size = le32_to_cpu(ucode->init_size);
1861         init_data_size = le32_to_cpu(ucode->init_data_size);
1862         boot_size = le32_to_cpu(ucode->boot_size);
1863
1864         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1865         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1866                        inst_size);
1867         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1868                        data_size);
1869         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1870                        init_size);
1871         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1872                        init_data_size);
1873         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1874                        boot_size);
1875
1876         /* Verify size of file vs. image size info in file's header */
1877         if (ucode_raw->size < sizeof(*ucode) +
1878                 inst_size + data_size + init_size +
1879                 init_data_size + boot_size) {
1880
1881                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1882                                (int)ucode_raw->size);
1883                 ret = -EINVAL;
1884                 goto err_release;
1885         }
1886
1887         /* Verify that uCode images will fit in card's SRAM */
1888         if (inst_size > priv->hw_params.max_inst_size) {
1889                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1890                                inst_size);
1891                 ret = -EINVAL;
1892                 goto err_release;
1893         }
1894
1895         if (data_size > priv->hw_params.max_data_size) {
1896                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1897                                 data_size);
1898                 ret = -EINVAL;
1899                 goto err_release;
1900         }
1901         if (init_size > priv->hw_params.max_inst_size) {
1902                 IWL_DEBUG_INFO
1903                     ("uCode init instr len %d too large to fit in\n",
1904                       init_size);
1905                 ret = -EINVAL;
1906                 goto err_release;
1907         }
1908         if (init_data_size > priv->hw_params.max_data_size) {
1909                 IWL_DEBUG_INFO
1910                     ("uCode init data len %d too large to fit in\n",
1911                       init_data_size);
1912                 ret = -EINVAL;
1913                 goto err_release;
1914         }
1915         if (boot_size > priv->hw_params.max_bsm_size) {
1916                 IWL_DEBUG_INFO
1917                     ("uCode boot instr len %d too large to fit in\n",
1918                       boot_size);
1919                 ret = -EINVAL;
1920                 goto err_release;
1921         }
1922
1923         /* Allocate ucode buffers for card's bus-master loading ... */
1924
1925         /* Runtime instructions and 2 copies of data:
1926          * 1) unmodified from disk
1927          * 2) backup cache for save/restore during power-downs */
1928         priv->ucode_code.len = inst_size;
1929         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1930
1931         priv->ucode_data.len = data_size;
1932         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1933
1934         priv->ucode_data_backup.len = data_size;
1935         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1936
1937         /* Initialization instructions and data */
1938         if (init_size && init_data_size) {
1939                 priv->ucode_init.len = init_size;
1940                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1941
1942                 priv->ucode_init_data.len = init_data_size;
1943                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1944
1945                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1946                         goto err_pci_alloc;
1947         }
1948
1949         /* Bootstrap (instructions only, no data) */
1950         if (boot_size) {
1951                 priv->ucode_boot.len = boot_size;
1952                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1953
1954                 if (!priv->ucode_boot.v_addr)
1955                         goto err_pci_alloc;
1956         }
1957
1958         /* Copy images into buffers for card's bus-master reads ... */
1959
1960         /* Runtime instructions (first block of data in file) */
1961         src = &ucode->data[0];
1962         len = priv->ucode_code.len;
1963         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1964         memcpy(priv->ucode_code.v_addr, src, len);
1965         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1966                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1967
1968         /* Runtime data (2nd block)
1969          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1970         src = &ucode->data[inst_size];
1971         len = priv->ucode_data.len;
1972         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1973         memcpy(priv->ucode_data.v_addr, src, len);
1974         memcpy(priv->ucode_data_backup.v_addr, src, len);
1975
1976         /* Initialization instructions (3rd block) */
1977         if (init_size) {
1978                 src = &ucode->data[inst_size + data_size];
1979                 len = priv->ucode_init.len;
1980                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1981                                 len);
1982                 memcpy(priv->ucode_init.v_addr, src, len);
1983         }
1984
1985         /* Initialization data (4th block) */
1986         if (init_data_size) {
1987                 src = &ucode->data[inst_size + data_size + init_size];
1988                 len = priv->ucode_init_data.len;
1989                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1990                                len);
1991                 memcpy(priv->ucode_init_data.v_addr, src, len);
1992         }
1993
1994         /* Bootstrap instructions (5th block) */
1995         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1996         len = priv->ucode_boot.len;
1997         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1998         memcpy(priv->ucode_boot.v_addr, src, len);
1999
2000         /* We have our copies now, allow OS release its copies */
2001         release_firmware(ucode_raw);
2002         return 0;
2003
2004  err_pci_alloc:
2005         IWL_ERROR("failed to allocate pci memory\n");
2006         ret = -ENOMEM;
2007         iwl4965_dealloc_ucode_pci(priv);
2008
2009  err_release:
2010         release_firmware(ucode_raw);
2011
2012  error:
2013         return ret;
2014 }
2015
2016 /**
2017  * iwl_alive_start - called after REPLY_ALIVE notification received
2018  *                   from protocol/runtime uCode (initialization uCode's
2019  *                   Alive gets handled by iwl_init_alive_start()).
2020  */
2021 static void iwl_alive_start(struct iwl_priv *priv)
2022 {
2023         int ret = 0;
2024
2025         IWL_DEBUG_INFO("Runtime Alive received.\n");
2026
2027         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2028                 /* We had an error bringing up the hardware, so take it
2029                  * all the way back down so we can try again */
2030                 IWL_DEBUG_INFO("Alive failed.\n");
2031                 goto restart;
2032         }
2033
2034         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2035          * This is a paranoid check, because we would not have gotten the
2036          * "runtime" alive if code weren't properly loaded.  */
2037         if (iwl_verify_ucode(priv)) {
2038                 /* Runtime instruction load was bad;
2039                  * take it all the way back down so we can try again */
2040                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2041                 goto restart;
2042         }
2043
2044         iwl_clear_stations_table(priv);
2045         ret = priv->cfg->ops->lib->alive_notify(priv);
2046         if (ret) {
2047                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2048                             ret);
2049                 goto restart;
2050         }
2051
2052         /* After the ALIVE response, we can send host commands to 4965 uCode */
2053         set_bit(STATUS_ALIVE, &priv->status);
2054
2055         if (iwl_is_rfkill(priv))
2056                 return;
2057
2058         ieee80211_wake_queues(priv->hw);
2059
2060         priv->active_rate = priv->rates_mask;
2061         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2062
2063         if (iwl_is_associated(priv)) {
2064                 struct iwl_rxon_cmd *active_rxon =
2065                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2066
2067                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2068                        sizeof(priv->staging_rxon));
2069                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2070         } else {
2071                 /* Initialize our rx_config data */
2072                 iwl4965_connection_init_rx_config(priv);
2073                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2074         }
2075
2076         /* Configure Bluetooth device coexistence support */
2077         iwl4965_send_bt_config(priv);
2078
2079         iwl_reset_run_time_calib(priv);
2080
2081         /* Configure the adapter for unassociated operation */
2082         iwl4965_commit_rxon(priv);
2083
2084         /* At this point, the NIC is initialized and operational */
2085         iwl_rf_kill_ct_config(priv);
2086
2087         iwl_leds_register(priv);
2088
2089         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2090         set_bit(STATUS_READY, &priv->status);
2091         wake_up_interruptible(&priv->wait_command_queue);
2092
2093         if (priv->error_recovering)
2094                 iwl4965_error_recovery(priv);
2095
2096         iwl_power_update_mode(priv, 1);
2097         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2098
2099         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2100                 iwl4965_set_mode(priv, priv->iw_mode);
2101
2102         return;
2103
2104  restart:
2105         queue_work(priv->workqueue, &priv->restart);
2106 }
2107
2108 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2109
2110 static void __iwl4965_down(struct iwl_priv *priv)
2111 {
2112         unsigned long flags;
2113         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2114
2115         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2116
2117         if (!exit_pending)
2118                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2119
2120         iwl_leds_unregister(priv);
2121
2122         iwl_clear_stations_table(priv);
2123
2124         /* Unblock any waiting calls */
2125         wake_up_interruptible_all(&priv->wait_command_queue);
2126
2127         /* Wipe out the EXIT_PENDING status bit if we are not actually
2128          * exiting the module */
2129         if (!exit_pending)
2130                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2131
2132         /* stop and reset the on-board processor */
2133         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2134
2135         /* tell the device to stop sending interrupts */
2136         spin_lock_irqsave(&priv->lock, flags);
2137         iwl4965_disable_interrupts(priv);
2138         spin_unlock_irqrestore(&priv->lock, flags);
2139         iwl_synchronize_irq(priv);
2140
2141         if (priv->mac80211_registered)
2142                 ieee80211_stop_queues(priv->hw);
2143
2144         /* If we have not previously called iwl4965_init() then
2145          * clear all bits but the RF Kill and SUSPEND bits and return */
2146         if (!iwl_is_init(priv)) {
2147                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2148                                         STATUS_RF_KILL_HW |
2149                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2150                                         STATUS_RF_KILL_SW |
2151                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2152                                         STATUS_GEO_CONFIGURED |
2153                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2154                                         STATUS_IN_SUSPEND |
2155                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2156                                         STATUS_EXIT_PENDING;
2157                 goto exit;
2158         }
2159
2160         /* ...otherwise clear out all the status bits but the RF Kill and
2161          * SUSPEND bits and continue taking the NIC down. */
2162         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2163                                 STATUS_RF_KILL_HW |
2164                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2165                                 STATUS_RF_KILL_SW |
2166                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2167                                 STATUS_GEO_CONFIGURED |
2168                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2169                                 STATUS_IN_SUSPEND |
2170                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2171                                 STATUS_FW_ERROR |
2172                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2173                                 STATUS_EXIT_PENDING;
2174
2175         spin_lock_irqsave(&priv->lock, flags);
2176         iwl_clear_bit(priv, CSR_GP_CNTRL,
2177                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2178         spin_unlock_irqrestore(&priv->lock, flags);
2179
2180         iwl_txq_ctx_stop(priv);
2181         iwl_rxq_stop(priv);
2182
2183         spin_lock_irqsave(&priv->lock, flags);
2184         if (!iwl_grab_nic_access(priv)) {
2185                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2186                                          APMG_CLK_VAL_DMA_CLK_RQT);
2187                 iwl_release_nic_access(priv);
2188         }
2189         spin_unlock_irqrestore(&priv->lock, flags);
2190
2191         udelay(5);
2192
2193         /* FIXME: apm_ops.suspend(priv) */
2194         priv->cfg->ops->lib->apm_ops.reset(priv);
2195         priv->cfg->ops->lib->free_shared_mem(priv);
2196
2197  exit:
2198         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2199
2200         if (priv->ibss_beacon)
2201                 dev_kfree_skb(priv->ibss_beacon);
2202         priv->ibss_beacon = NULL;
2203
2204         /* clear out any free frames */
2205         iwl_clear_free_frames(priv);
2206 }
2207
2208 static void iwl4965_down(struct iwl_priv *priv)
2209 {
2210         mutex_lock(&priv->mutex);
2211         __iwl4965_down(priv);
2212         mutex_unlock(&priv->mutex);
2213
2214         iwl_cancel_deferred_work(priv);
2215 }
2216
2217 #define MAX_HW_RESTARTS 5
2218
2219 static int __iwl4965_up(struct iwl_priv *priv)
2220 {
2221         int i;
2222         int ret;
2223
2224         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2225                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2226                 return -EIO;
2227         }
2228
2229         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2230                 IWL_ERROR("ucode not available for device bringup\n");
2231                 return -EIO;
2232         }
2233
2234         /* If platform's RF_KILL switch is NOT set to KILL */
2235         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2236                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2237         else
2238                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2239
2240         if (iwl_is_rfkill(priv)) {
2241                 iwl4965_enable_interrupts(priv);
2242                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2243                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2244                 return 0;
2245         }
2246
2247         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2248
2249         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2250         if (ret) {
2251                 IWL_ERROR("Unable to allocate shared memory\n");
2252                 return ret;
2253         }
2254
2255         ret = iwl_hw_nic_init(priv);
2256         if (ret) {
2257                 IWL_ERROR("Unable to init nic\n");
2258                 return ret;
2259         }
2260
2261         /* make sure rfkill handshake bits are cleared */
2262         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2263         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2264                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2265
2266         /* clear (again), then enable host interrupts */
2267         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2268         iwl4965_enable_interrupts(priv);
2269
2270         /* really make sure rfkill handshake bits are cleared */
2271         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2272         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2273
2274         /* Copy original ucode data image from disk into backup cache.
2275          * This will be used to initialize the on-board processor's
2276          * data SRAM for a clean start when the runtime program first loads. */
2277         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2278                priv->ucode_data.len);
2279
2280         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2281
2282                 iwl_clear_stations_table(priv);
2283
2284                 /* load bootstrap state machine,
2285                  * load bootstrap program into processor's memory,
2286                  * prepare to load the "initialize" uCode */
2287                 ret = priv->cfg->ops->lib->load_ucode(priv);
2288
2289                 if (ret) {
2290                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2291                         continue;
2292                 }
2293
2294                 /* Clear out the uCode error bit if it is set */
2295                 clear_bit(STATUS_FW_ERROR, &priv->status);
2296
2297                 /* start card; "initialize" will load runtime ucode */
2298                 iwl4965_nic_start(priv);
2299
2300                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2301
2302                 return 0;
2303         }
2304
2305         set_bit(STATUS_EXIT_PENDING, &priv->status);
2306         __iwl4965_down(priv);
2307         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2308
2309         /* tried to restart and config the device for as long as our
2310          * patience could withstand */
2311         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2312         return -EIO;
2313 }
2314
2315
2316 /*****************************************************************************
2317  *
2318  * Workqueue callbacks
2319  *
2320  *****************************************************************************/
2321
2322 static void iwl_bg_init_alive_start(struct work_struct *data)
2323 {
2324         struct iwl_priv *priv =
2325             container_of(data, struct iwl_priv, init_alive_start.work);
2326
2327         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2328                 return;
2329
2330         mutex_lock(&priv->mutex);
2331         priv->cfg->ops->lib->init_alive_start(priv);
2332         mutex_unlock(&priv->mutex);
2333 }
2334
2335 static void iwl_bg_alive_start(struct work_struct *data)
2336 {
2337         struct iwl_priv *priv =
2338             container_of(data, struct iwl_priv, alive_start.work);
2339
2340         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2341                 return;
2342
2343         mutex_lock(&priv->mutex);
2344         iwl_alive_start(priv);
2345         mutex_unlock(&priv->mutex);
2346 }
2347
2348 static void iwl4965_bg_rf_kill(struct work_struct *work)
2349 {
2350         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2351
2352         wake_up_interruptible(&priv->wait_command_queue);
2353
2354         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2355                 return;
2356
2357         mutex_lock(&priv->mutex);
2358
2359         if (!iwl_is_rfkill(priv)) {
2360                 IWL_DEBUG(IWL_DL_RF_KILL,
2361                           "HW and/or SW RF Kill no longer active, restarting "
2362                           "device\n");
2363                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2364                         queue_work(priv->workqueue, &priv->restart);
2365         } else {
2366                 /* make sure mac80211 stop sending Tx frame */
2367                 if (priv->mac80211_registered)
2368                         ieee80211_stop_queues(priv->hw);
2369
2370                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2371                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2372                                           "disabled by SW switch\n");
2373                 else
2374                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2375                                     "Kill switch must be turned off for "
2376                                     "wireless networking to work.\n");
2377         }
2378         mutex_unlock(&priv->mutex);
2379         iwl_rfkill_set_hw_state(priv);
2380 }
2381
2382 static void iwl4965_bg_set_monitor(struct work_struct *work)
2383 {
2384         struct iwl_priv *priv = container_of(work,
2385                                 struct iwl_priv, set_monitor);
2386         int ret;
2387
2388         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2389
2390         mutex_lock(&priv->mutex);
2391
2392         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2393
2394         if (ret) {
2395                 if (ret == -EAGAIN)
2396                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2397                 else
2398                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2399         }
2400
2401         mutex_unlock(&priv->mutex);
2402 }
2403
2404 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2405 {
2406         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2407                         run_time_calib_work);
2408
2409         mutex_lock(&priv->mutex);
2410
2411         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2412             test_bit(STATUS_SCANNING, &priv->status)) {
2413                 mutex_unlock(&priv->mutex);
2414                 return;
2415         }
2416
2417         if (priv->start_calib) {
2418                 iwl_chain_noise_calibration(priv, &priv->statistics);
2419
2420                 iwl_sensitivity_calibration(priv, &priv->statistics);
2421         }
2422
2423         mutex_unlock(&priv->mutex);
2424         return;
2425 }
2426
2427 static void iwl4965_bg_up(struct work_struct *data)
2428 {
2429         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2430
2431         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2432                 return;
2433
2434         mutex_lock(&priv->mutex);
2435         __iwl4965_up(priv);
2436         mutex_unlock(&priv->mutex);
2437         iwl_rfkill_set_hw_state(priv);
2438 }
2439
2440 static void iwl4965_bg_restart(struct work_struct *data)
2441 {
2442         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2443
2444         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2445                 return;
2446
2447         iwl4965_down(priv);
2448         queue_work(priv->workqueue, &priv->up);
2449 }
2450
2451 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2452 {
2453         struct iwl_priv *priv =
2454             container_of(data, struct iwl_priv, rx_replenish);
2455
2456         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2457                 return;
2458
2459         mutex_lock(&priv->mutex);
2460         iwl_rx_replenish(priv);
2461         mutex_unlock(&priv->mutex);
2462 }
2463
2464 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2465
2466 static void iwl4965_post_associate(struct iwl_priv *priv)
2467 {
2468         struct ieee80211_conf *conf = NULL;
2469         int ret = 0;
2470         DECLARE_MAC_BUF(mac);
2471         unsigned long flags;
2472
2473         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2474                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2475                 return;
2476         }
2477
2478         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2479                         priv->assoc_id,
2480                         print_mac(mac, priv->active_rxon.bssid_addr));
2481
2482
2483         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2484                 return;
2485
2486
2487         if (!priv->vif || !priv->is_open)
2488                 return;
2489
2490         iwl_scan_cancel_timeout(priv, 200);
2491
2492         conf = ieee80211_get_hw_conf(priv->hw);
2493
2494         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2495         iwl4965_commit_rxon(priv);
2496
2497         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2498         iwl4965_setup_rxon_timing(priv);
2499         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2500                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2501         if (ret)
2502                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2503                             "Attempting to continue.\n");
2504
2505         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2506
2507         if (priv->current_ht_config.is_ht)
2508                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2509
2510         iwl_set_rxon_chain(priv);
2511         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2512
2513         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2514                         priv->assoc_id, priv->beacon_int);
2515
2516         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2517                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2518         else
2519                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2520
2521         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2522                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2523                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2524                 else
2525                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2526
2527                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2528                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2529
2530         }
2531
2532         iwl4965_commit_rxon(priv);
2533
2534         switch (priv->iw_mode) {
2535         case IEEE80211_IF_TYPE_STA:
2536                 break;
2537
2538         case IEEE80211_IF_TYPE_IBSS:
2539
2540                 /* assume default assoc id */
2541                 priv->assoc_id = 1;
2542
2543                 iwl_rxon_add_station(priv, priv->bssid, 0);
2544                 iwl4965_send_beacon_cmd(priv);
2545
2546                 break;
2547
2548         default:
2549                 IWL_ERROR("%s Should not be called in %d mode\n",
2550                           __func__, priv->iw_mode);
2551                 break;
2552         }
2553
2554         /* Enable Rx differential gain and sensitivity calibrations */
2555         iwl_chain_noise_reset(priv);
2556         priv->start_calib = 1;
2557
2558         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2559                 priv->assoc_station_added = 1;
2560
2561         spin_lock_irqsave(&priv->lock, flags);
2562         iwl_activate_qos(priv, 0);
2563         spin_unlock_irqrestore(&priv->lock, flags);
2564
2565         iwl_power_update_mode(priv, 0);
2566         /* we have just associated, don't start scan too early */
2567         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2568 }
2569
2570 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2571
2572 static void iwl_bg_scan_completed(struct work_struct *work)
2573 {
2574         struct iwl_priv *priv =
2575             container_of(work, struct iwl_priv, scan_completed);
2576
2577         IWL_DEBUG_SCAN("SCAN complete scan\n");
2578
2579         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2580                 return;
2581
2582         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2583                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2584
2585         ieee80211_scan_completed(priv->hw);
2586
2587         /* Since setting the TXPOWER may have been deferred while
2588          * performing the scan, fire one off */
2589         mutex_lock(&priv->mutex);
2590         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2591         mutex_unlock(&priv->mutex);
2592 }
2593
2594 /*****************************************************************************
2595  *
2596  * mac80211 entry point functions
2597  *
2598  *****************************************************************************/
2599
2600 #define UCODE_READY_TIMEOUT     (4 * HZ)
2601
2602 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2603 {
2604         struct iwl_priv *priv = hw->priv;
2605         int ret;
2606
2607         IWL_DEBUG_MAC80211("enter\n");
2608
2609         if (pci_enable_device(priv->pci_dev)) {
2610                 IWL_ERROR("Fail to pci_enable_device\n");
2611                 return -ENODEV;
2612         }
2613         pci_restore_state(priv->pci_dev);
2614         pci_enable_msi(priv->pci_dev);
2615
2616         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2617                           DRV_NAME, priv);
2618         if (ret) {
2619                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2620                 goto out_disable_msi;
2621         }
2622
2623         /* we should be verifying the device is ready to be opened */
2624         mutex_lock(&priv->mutex);
2625
2626         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2627         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2628          * ucode filename and max sizes are card-specific. */
2629
2630         if (!priv->ucode_code.len) {
2631                 ret = iwl4965_read_ucode(priv);
2632                 if (ret) {
2633                         IWL_ERROR("Could not read microcode: %d\n", ret);
2634                         mutex_unlock(&priv->mutex);
2635                         goto out_release_irq;
2636                 }
2637         }
2638
2639         ret = __iwl4965_up(priv);
2640
2641         mutex_unlock(&priv->mutex);
2642
2643         iwl_rfkill_set_hw_state(priv);
2644
2645         if (ret)
2646                 goto out_release_irq;
2647
2648         if (iwl_is_rfkill(priv))
2649                 goto out;
2650
2651         IWL_DEBUG_INFO("Start UP work done.\n");
2652
2653         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2654                 return 0;
2655
2656         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2657          * mac80211 will not be run successfully. */
2658         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2659                         test_bit(STATUS_READY, &priv->status),
2660                         UCODE_READY_TIMEOUT);
2661         if (!ret) {
2662                 if (!test_bit(STATUS_READY, &priv->status)) {
2663                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2664                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2665                         ret = -ETIMEDOUT;
2666                         goto out_release_irq;
2667                 }
2668         }
2669
2670 out:
2671         priv->is_open = 1;
2672         IWL_DEBUG_MAC80211("leave\n");
2673         return 0;
2674
2675 out_release_irq:
2676         free_irq(priv->pci_dev->irq, priv);
2677 out_disable_msi:
2678         pci_disable_msi(priv->pci_dev);
2679         pci_disable_device(priv->pci_dev);
2680         priv->is_open = 0;
2681         IWL_DEBUG_MAC80211("leave - failed\n");
2682         return ret;
2683 }
2684
2685 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2686 {
2687         struct iwl_priv *priv = hw->priv;
2688
2689         IWL_DEBUG_MAC80211("enter\n");
2690
2691         if (!priv->is_open) {
2692                 IWL_DEBUG_MAC80211("leave - skip\n");
2693                 return;
2694         }
2695
2696         priv->is_open = 0;
2697
2698         if (iwl_is_ready_rf(priv)) {
2699                 /* stop mac, cancel any scan request and clear
2700                  * RXON_FILTER_ASSOC_MSK BIT
2701                  */
2702                 mutex_lock(&priv->mutex);
2703                 iwl_scan_cancel_timeout(priv, 100);
2704                 mutex_unlock(&priv->mutex);
2705         }
2706
2707         iwl4965_down(priv);
2708
2709         flush_workqueue(priv->workqueue);
2710         free_irq(priv->pci_dev->irq, priv);
2711         pci_disable_msi(priv->pci_dev);
2712         pci_save_state(priv->pci_dev);
2713         pci_disable_device(priv->pci_dev);
2714
2715         IWL_DEBUG_MAC80211("leave\n");
2716 }
2717
2718 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2719 {
2720         struct iwl_priv *priv = hw->priv;
2721
2722         IWL_DEBUG_MAC80211("enter\n");
2723
2724         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2725                 IWL_DEBUG_MAC80211("leave - monitor\n");
2726                 dev_kfree_skb_any(skb);
2727                 return 0;
2728         }
2729
2730         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2731                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2732
2733         if (iwl_tx_skb(priv, skb))
2734                 dev_kfree_skb_any(skb);
2735
2736         IWL_DEBUG_MAC80211("leave\n");
2737         return 0;
2738 }
2739
2740 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2741                                  struct ieee80211_if_init_conf *conf)
2742 {
2743         struct iwl_priv *priv = hw->priv;
2744         unsigned long flags;
2745         DECLARE_MAC_BUF(mac);
2746
2747         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2748
2749         if (priv->vif) {
2750                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2751                 return -EOPNOTSUPP;
2752         }
2753
2754         spin_lock_irqsave(&priv->lock, flags);
2755         priv->vif = conf->vif;
2756
2757         spin_unlock_irqrestore(&priv->lock, flags);
2758
2759         mutex_lock(&priv->mutex);
2760
2761         if (conf->mac_addr) {
2762                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2763                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2764         }
2765
2766         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2767                 /* we are not ready, will run again when ready */
2768                 set_bit(STATUS_MODE_PENDING, &priv->status);
2769
2770         mutex_unlock(&priv->mutex);
2771
2772         IWL_DEBUG_MAC80211("leave\n");
2773         return 0;
2774 }
2775
2776 /**
2777  * iwl4965_mac_config - mac80211 config callback
2778  *
2779  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2780  * be set inappropriately and the driver currently sets the hardware up to
2781  * use it whenever needed.
2782  */
2783 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2784 {
2785         struct iwl_priv *priv = hw->priv;
2786         const struct iwl_channel_info *ch_info;
2787         unsigned long flags;
2788         int ret = 0;
2789         u16 channel;
2790
2791         mutex_lock(&priv->mutex);
2792         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2793
2794         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2795
2796         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2797                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2798                 goto out;
2799         }
2800
2801         if (!conf->radio_enabled)
2802                 iwl_radio_kill_sw_disable_radio(priv);
2803
2804         if (!iwl_is_ready(priv)) {
2805                 IWL_DEBUG_MAC80211("leave - not ready\n");
2806                 ret = -EIO;
2807                 goto out;
2808         }
2809
2810         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2811                      test_bit(STATUS_SCANNING, &priv->status))) {
2812                 IWL_DEBUG_MAC80211("leave - scanning\n");
2813                 set_bit(STATUS_CONF_PENDING, &priv->status);
2814                 mutex_unlock(&priv->mutex);
2815                 return 0;
2816         }
2817
2818         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2819         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2820         if (!is_channel_valid(ch_info)) {
2821                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2822                 ret = -EINVAL;
2823                 goto out;
2824         }
2825
2826         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2827             !is_channel_ibss(ch_info)) {
2828                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2829                         conf->channel->hw_value, conf->channel->band);
2830                 ret = -EINVAL;
2831                 goto out;
2832         }
2833
2834         spin_lock_irqsave(&priv->lock, flags);
2835
2836
2837         /* if we are switching from ht to 2.4 clear flags
2838          * from any ht related info since 2.4 does not
2839          * support ht */
2840         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2841 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2842             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2843 #endif
2844         )
2845                 priv->staging_rxon.flags = 0;
2846
2847         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2848
2849         iwl_set_flags_for_band(priv, conf->channel->band);
2850
2851         /* The list of supported rates and rate mask can be different
2852          * for each band; since the band may have changed, reset
2853          * the rate mask to what mac80211 lists */
2854         iwl4965_set_rate(priv);
2855
2856         spin_unlock_irqrestore(&priv->lock, flags);
2857
2858 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2859         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2860                 iwl4965_hw_channel_switch(priv, conf->channel);
2861                 goto out;
2862         }
2863 #endif
2864
2865         if (!conf->radio_enabled) {
2866                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2867                 goto out;
2868         }
2869
2870         if (iwl_is_rfkill(priv)) {
2871                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2872                 ret = -EIO;
2873                 goto out;
2874         }
2875
2876         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2877                            priv->tx_power_user_lmt, conf->power_level);
2878
2879         iwl_set_tx_power(priv, conf->power_level, false);
2880
2881         iwl4965_set_rate(priv);
2882
2883         if (memcmp(&priv->active_rxon,
2884                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2885                 iwl4965_commit_rxon(priv);
2886         else
2887                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2888
2889         IWL_DEBUG_MAC80211("leave\n");
2890
2891 out:
2892         clear_bit(STATUS_CONF_PENDING, &priv->status);
2893         mutex_unlock(&priv->mutex);
2894         return ret;
2895 }
2896
2897 static void iwl4965_config_ap(struct iwl_priv *priv)
2898 {
2899         int ret = 0;
2900         unsigned long flags;
2901
2902         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2903                 return;
2904
2905         /* The following should be done only at AP bring up */
2906         if (!(iwl_is_associated(priv))) {
2907
2908                 /* RXON - unassoc (to set timing command) */
2909                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2910                 iwl4965_commit_rxon(priv);
2911
2912                 /* RXON Timing */
2913                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2914                 iwl4965_setup_rxon_timing(priv);
2915                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2916                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2917                 if (ret)
2918                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2919                                         "Attempting to continue.\n");
2920
2921                 iwl_set_rxon_chain(priv);
2922
2923                 /* FIXME: what should be the assoc_id for AP? */
2924                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2925                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2926                         priv->staging_rxon.flags |=
2927                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2928                 else
2929                         priv->staging_rxon.flags &=
2930                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2931
2932                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2933                         if (priv->assoc_capability &
2934                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2935                                 priv->staging_rxon.flags |=
2936                                         RXON_FLG_SHORT_SLOT_MSK;
2937                         else
2938                                 priv->staging_rxon.flags &=
2939                                         ~RXON_FLG_SHORT_SLOT_MSK;
2940
2941                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2942                                 priv->staging_rxon.flags &=
2943                                         ~RXON_FLG_SHORT_SLOT_MSK;
2944                 }
2945                 /* restore RXON assoc */
2946                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2947                 iwl4965_commit_rxon(priv);
2948                 spin_lock_irqsave(&priv->lock, flags);
2949                 iwl_activate_qos(priv, 1);
2950                 spin_unlock_irqrestore(&priv->lock, flags);
2951                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2952         }
2953         iwl4965_send_beacon_cmd(priv);
2954
2955         /* FIXME - we need to add code here to detect a totally new
2956          * configuration, reset the AP, unassoc, rxon timing, assoc,
2957          * clear sta table, add BCAST sta... */
2958 }
2959
2960 /* temporary */
2961 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2962
2963 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2964                                         struct ieee80211_vif *vif,
2965                                     struct ieee80211_if_conf *conf)
2966 {
2967         struct iwl_priv *priv = hw->priv;
2968         DECLARE_MAC_BUF(mac);
2969         unsigned long flags;
2970         int rc;
2971
2972         if (conf == NULL)
2973                 return -EIO;
2974
2975         if (priv->vif != vif) {
2976                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2977                 return 0;
2978         }
2979
2980         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2981             conf->changed & IEEE80211_IFCC_BEACON) {
2982                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2983                 if (!beacon)
2984                         return -ENOMEM;
2985                 rc = iwl4965_mac_beacon_update(hw, beacon);
2986                 if (rc)
2987                         return rc;
2988         }
2989
2990         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2991             (!conf->ssid_len)) {
2992                 IWL_DEBUG_MAC80211
2993                     ("Leaving in AP mode because HostAPD is not ready.\n");
2994                 return 0;
2995         }
2996
2997         if (!iwl_is_alive(priv))
2998                 return -EAGAIN;
2999
3000         mutex_lock(&priv->mutex);
3001
3002         if (conf->bssid)
3003                 IWL_DEBUG_MAC80211("bssid: %s\n",
3004                                    print_mac(mac, conf->bssid));
3005
3006 /*
3007  * very dubious code was here; the probe filtering flag is never set:
3008  *
3009         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3010             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3011  */
3012
3013         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3014                 if (!conf->bssid) {
3015                         conf->bssid = priv->mac_addr;
3016                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3017                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3018                                            print_mac(mac, conf->bssid));
3019                 }
3020                 if (priv->ibss_beacon)
3021                         dev_kfree_skb(priv->ibss_beacon);
3022
3023                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3024         }
3025
3026         if (iwl_is_rfkill(priv))
3027                 goto done;
3028
3029         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3030             !is_multicast_ether_addr(conf->bssid)) {
3031                 /* If there is currently a HW scan going on in the background
3032                  * then we need to cancel it else the RXON below will fail. */
3033                 if (iwl_scan_cancel_timeout(priv, 100)) {
3034                         IWL_WARNING("Aborted scan still in progress "
3035                                     "after 100ms\n");
3036                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3037                         mutex_unlock(&priv->mutex);
3038                         return -EAGAIN;
3039                 }
3040                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3041
3042                 /* TODO: Audit driver for usage of these members and see
3043                  * if mac80211 deprecates them (priv->bssid looks like it
3044                  * shouldn't be there, but I haven't scanned the IBSS code
3045                  * to verify) - jpk */
3046                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3047
3048                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3049                         iwl4965_config_ap(priv);
3050                 else {
3051                         rc = iwl4965_commit_rxon(priv);
3052                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3053                                 iwl_rxon_add_station(
3054                                         priv, priv->active_rxon.bssid_addr, 1);
3055                 }
3056
3057         } else {
3058                 iwl_scan_cancel_timeout(priv, 100);
3059                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3060                 iwl4965_commit_rxon(priv);
3061         }
3062
3063  done:
3064         spin_lock_irqsave(&priv->lock, flags);
3065         if (!conf->ssid_len)
3066                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3067         else
3068                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3069
3070         priv->essid_len = conf->ssid_len;
3071         spin_unlock_irqrestore(&priv->lock, flags);
3072
3073         IWL_DEBUG_MAC80211("leave\n");
3074         mutex_unlock(&priv->mutex);
3075
3076         return 0;
3077 }
3078
3079 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3080                                  unsigned int changed_flags,
3081                                  unsigned int *total_flags,
3082                                  int mc_count, struct dev_addr_list *mc_list)
3083 {
3084         struct iwl_priv *priv = hw->priv;
3085
3086         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3087                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3088                                    IEEE80211_IF_TYPE_MNTR,
3089                                    changed_flags, *total_flags);
3090                 /* queue work 'cuz mac80211 is holding a lock which
3091                  * prevents us from issuing (synchronous) f/w cmds */
3092                 queue_work(priv->workqueue, &priv->set_monitor);
3093         }
3094         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3095                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3096 }
3097
3098 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3099                                      struct ieee80211_if_init_conf *conf)
3100 {
3101         struct iwl_priv *priv = hw->priv;
3102
3103         IWL_DEBUG_MAC80211("enter\n");
3104
3105         mutex_lock(&priv->mutex);
3106
3107         if (iwl_is_ready_rf(priv)) {
3108                 iwl_scan_cancel_timeout(priv, 100);
3109                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3110                 iwl4965_commit_rxon(priv);
3111         }
3112         if (priv->vif == conf->vif) {
3113                 priv->vif = NULL;
3114                 memset(priv->bssid, 0, ETH_ALEN);
3115                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3116                 priv->essid_len = 0;
3117         }
3118         mutex_unlock(&priv->mutex);
3119
3120         IWL_DEBUG_MAC80211("leave\n");
3121
3122 }
3123
3124 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3125 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3126                                      struct ieee80211_vif *vif,
3127                                      struct ieee80211_bss_conf *bss_conf,
3128                                      u32 changes)
3129 {
3130         struct iwl_priv *priv = hw->priv;
3131
3132         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3133
3134         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3135                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3136                                    bss_conf->use_short_preamble);
3137                 if (bss_conf->use_short_preamble)
3138                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3139                 else
3140                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3141         }
3142
3143         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3144                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3145                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3146                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3147                 else
3148                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3149         }
3150
3151         if (changes & BSS_CHANGED_HT) {
3152                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3153                 iwl4965_ht_conf(priv, bss_conf);
3154                 iwl_set_rxon_chain(priv);
3155         }
3156
3157         if (changes & BSS_CHANGED_ASSOC) {
3158                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3159                 /* This should never happen as this function should
3160                  * never be called from interrupt context. */
3161                 if (WARN_ON_ONCE(in_interrupt()))
3162                         return;
3163                 if (bss_conf->assoc) {
3164                         priv->assoc_id = bss_conf->aid;
3165                         priv->beacon_int = bss_conf->beacon_int;
3166                         priv->power_data.dtim_period = bss_conf->dtim_period;
3167                         priv->timestamp = bss_conf->timestamp;
3168                         priv->assoc_capability = bss_conf->assoc_capability;
3169                         priv->next_scan_jiffies = jiffies +
3170                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3171                         mutex_lock(&priv->mutex);
3172                         iwl4965_post_associate(priv);
3173                         mutex_unlock(&priv->mutex);
3174                 } else {
3175                         priv->assoc_id = 0;
3176                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3177                 }
3178         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3179                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3180                         iwl_send_rxon_assoc(priv);
3181         }
3182
3183 }
3184
3185 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3186 {
3187         int rc = 0;
3188         unsigned long flags;
3189         struct iwl_priv *priv = hw->priv;
3190
3191         IWL_DEBUG_MAC80211("enter\n");
3192
3193         mutex_lock(&priv->mutex);
3194         spin_lock_irqsave(&priv->lock, flags);
3195
3196         if (!iwl_is_ready_rf(priv)) {
3197                 rc = -EIO;
3198                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3199                 goto out_unlock;
3200         }
3201
3202         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3203                 rc = -EIO;
3204                 IWL_ERROR("ERROR: APs don't scan\n");
3205                 goto out_unlock;
3206         }
3207
3208         /* we don't schedule scan within next_scan_jiffies period */
3209         if (priv->next_scan_jiffies &&
3210                         time_after(priv->next_scan_jiffies, jiffies)) {
3211                 rc = -EAGAIN;
3212                 goto out_unlock;
3213         }
3214         /* if we just finished scan ask for delay */
3215         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3216                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3217                 rc = -EAGAIN;
3218                 goto out_unlock;
3219         }
3220         if (len) {
3221                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3222                                iwl_escape_essid(ssid, len), (int)len);
3223
3224                 priv->one_direct_scan = 1;
3225                 priv->direct_ssid_len = (u8)
3226                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3227                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3228         } else
3229                 priv->one_direct_scan = 0;
3230
3231         rc = iwl_scan_initiate(priv);
3232
3233         IWL_DEBUG_MAC80211("leave\n");
3234
3235 out_unlock:
3236         spin_unlock_irqrestore(&priv->lock, flags);
3237         mutex_unlock(&priv->mutex);
3238
3239         return rc;
3240 }
3241
3242 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3243                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3244                         u32 iv32, u16 *phase1key)
3245 {
3246         struct iwl_priv *priv = hw->priv;
3247         u8 sta_id = IWL_INVALID_STATION;
3248         unsigned long flags;
3249         __le16 key_flags = 0;
3250         int i;
3251         DECLARE_MAC_BUF(mac);
3252
3253         IWL_DEBUG_MAC80211("enter\n");
3254
3255         sta_id = iwl_find_station(priv, addr);
3256         if (sta_id == IWL_INVALID_STATION) {
3257                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3258                                    print_mac(mac, addr));
3259                 return;
3260         }
3261
3262         iwl_scan_cancel_timeout(priv, 100);
3263
3264         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3265         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3266         key_flags &= ~STA_KEY_FLG_INVALID;
3267
3268         if (sta_id == priv->hw_params.bcast_sta_id)
3269                 key_flags |= STA_KEY_MULTICAST_MSK;
3270
3271         spin_lock_irqsave(&priv->sta_lock, flags);
3272
3273         priv->stations[sta_id].sta.key.key_flags = key_flags;
3274         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3275
3276         for (i = 0; i < 5; i++)
3277                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3278                         cpu_to_le16(phase1key[i]);
3279
3280         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3281         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3282
3283         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3284
3285         spin_unlock_irqrestore(&priv->sta_lock, flags);
3286
3287         IWL_DEBUG_MAC80211("leave\n");
3288 }
3289
3290 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3291                            const u8 *local_addr, const u8 *addr,
3292                            struct ieee80211_key_conf *key)
3293 {
3294         struct iwl_priv *priv = hw->priv;
3295         DECLARE_MAC_BUF(mac);
3296         int ret = 0;
3297         u8 sta_id = IWL_INVALID_STATION;
3298         u8 is_default_wep_key = 0;
3299
3300         IWL_DEBUG_MAC80211("enter\n");
3301
3302         if (priv->hw_params.sw_crypto) {
3303                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3304                 return -EOPNOTSUPP;
3305         }
3306
3307         if (is_zero_ether_addr(addr))
3308                 /* only support pairwise keys */
3309                 return -EOPNOTSUPP;
3310
3311         sta_id = iwl_find_station(priv, addr);
3312         if (sta_id == IWL_INVALID_STATION) {
3313                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3314                                    print_mac(mac, addr));
3315                 return -EINVAL;
3316
3317         }
3318
3319         mutex_lock(&priv->mutex);
3320         iwl_scan_cancel_timeout(priv, 100);
3321         mutex_unlock(&priv->mutex);
3322
3323         /* If we are getting WEP group key and we didn't receive any key mapping
3324          * so far, we are in legacy wep mode (group key only), otherwise we are
3325          * in 1X mode.
3326          * In legacy wep mode, we use another host command to the uCode */
3327         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3328                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3329                 if (cmd == SET_KEY)
3330                         is_default_wep_key = !priv->key_mapping_key;
3331                 else
3332                         is_default_wep_key =
3333                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3334         }
3335
3336         switch (cmd) {
3337         case SET_KEY:
3338                 if (is_default_wep_key)
3339                         ret = iwl_set_default_wep_key(priv, key);
3340                 else
3341                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3342
3343                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3344                 break;
3345         case DISABLE_KEY:
3346                 if (is_default_wep_key)
3347                         ret = iwl_remove_default_wep_key(priv, key);
3348                 else
3349                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3350
3351                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3352                 break;
3353         default:
3354                 ret = -EINVAL;
3355         }
3356
3357         IWL_DEBUG_MAC80211("leave\n");
3358
3359         return ret;
3360 }
3361
3362 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3363                            const struct ieee80211_tx_queue_params *params)
3364 {
3365         struct iwl_priv *priv = hw->priv;
3366         unsigned long flags;
3367         int q;
3368
3369         IWL_DEBUG_MAC80211("enter\n");
3370
3371         if (!iwl_is_ready_rf(priv)) {
3372                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3373                 return -EIO;
3374         }
3375
3376         if (queue >= AC_NUM) {
3377                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3378                 return 0;
3379         }
3380
3381         if (!priv->qos_data.qos_enable) {
3382                 priv->qos_data.qos_active = 0;
3383                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3384                 return 0;
3385         }
3386         q = AC_NUM - 1 - queue;
3387
3388         spin_lock_irqsave(&priv->lock, flags);
3389
3390         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3391         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3392         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3393         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3394                         cpu_to_le16((params->txop * 32));
3395
3396         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3397         priv->qos_data.qos_active = 1;
3398
3399         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3400                 iwl_activate_qos(priv, 1);
3401         else if (priv->assoc_id && iwl_is_associated(priv))
3402                 iwl_activate_qos(priv, 0);
3403
3404         spin_unlock_irqrestore(&priv->lock, flags);
3405
3406         IWL_DEBUG_MAC80211("leave\n");
3407         return 0;
3408 }
3409
3410 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3411                              enum ieee80211_ampdu_mlme_action action,
3412                              const u8 *addr, u16 tid, u16 *ssn)
3413 {
3414         struct iwl_priv *priv = hw->priv;
3415         DECLARE_MAC_BUF(mac);
3416
3417         IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3418                      print_mac(mac, addr), tid);
3419
3420         if (!(priv->cfg->sku & IWL_SKU_N))
3421                 return -EACCES;
3422
3423         switch (action) {
3424         case IEEE80211_AMPDU_RX_START:
3425                 IWL_DEBUG_HT("start Rx\n");
3426                 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3427         case IEEE80211_AMPDU_RX_STOP:
3428                 IWL_DEBUG_HT("stop Rx\n");
3429                 return iwl_rx_agg_stop(priv, addr, tid);
3430         case IEEE80211_AMPDU_TX_START:
3431                 IWL_DEBUG_HT("start Tx\n");
3432                 return iwl_tx_agg_start(priv, addr, tid, ssn);
3433         case IEEE80211_AMPDU_TX_STOP:
3434                 IWL_DEBUG_HT("stop Tx\n");
3435                 return iwl_tx_agg_stop(priv, addr, tid);
3436         default:
3437                 IWL_DEBUG_HT("unknown\n");
3438                 return -EINVAL;
3439                 break;
3440         }
3441         return 0;
3442 }
3443 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3444                                 struct ieee80211_tx_queue_stats *stats)
3445 {
3446         struct iwl_priv *priv = hw->priv;
3447         int i, avail;
3448         struct iwl_tx_queue *txq;
3449         struct iwl_queue *q;
3450         unsigned long flags;
3451
3452         IWL_DEBUG_MAC80211("enter\n");
3453
3454         if (!iwl_is_ready_rf(priv)) {
3455                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3456                 return -EIO;
3457         }
3458
3459         spin_lock_irqsave(&priv->lock, flags);
3460
3461         for (i = 0; i < AC_NUM; i++) {
3462                 txq = &priv->txq[i];
3463                 q = &txq->q;
3464                 avail = iwl_queue_space(q);
3465
3466                 stats[i].len = q->n_window - avail;
3467                 stats[i].limit = q->n_window - q->high_mark;
3468                 stats[i].count = q->n_window;
3469
3470         }
3471         spin_unlock_irqrestore(&priv->lock, flags);
3472
3473         IWL_DEBUG_MAC80211("leave\n");
3474
3475         return 0;
3476 }
3477
3478 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3479                              struct ieee80211_low_level_stats *stats)
3480 {
3481         struct iwl_priv *priv = hw->priv;
3482
3483         priv = hw->priv;
3484         IWL_DEBUG_MAC80211("enter\n");
3485         IWL_DEBUG_MAC80211("leave\n");
3486
3487         return 0;
3488 }
3489
3490 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3491 {
3492         struct iwl_priv *priv = hw->priv;
3493         unsigned long flags;
3494
3495         mutex_lock(&priv->mutex);
3496         IWL_DEBUG_MAC80211("enter\n");
3497
3498         spin_lock_irqsave(&priv->lock, flags);
3499         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3500         spin_unlock_irqrestore(&priv->lock, flags);
3501
3502         iwl_reset_qos(priv);
3503
3504         spin_lock_irqsave(&priv->lock, flags);
3505         priv->assoc_id = 0;
3506         priv->assoc_capability = 0;
3507         priv->assoc_station_added = 0;
3508
3509         /* new association get rid of ibss beacon skb */
3510         if (priv->ibss_beacon)
3511                 dev_kfree_skb(priv->ibss_beacon);
3512
3513         priv->ibss_beacon = NULL;
3514
3515         priv->beacon_int = priv->hw->conf.beacon_int;
3516         priv->timestamp = 0;
3517         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3518                 priv->beacon_int = 0;
3519
3520         spin_unlock_irqrestore(&priv->lock, flags);
3521
3522         if (!iwl_is_ready_rf(priv)) {
3523                 IWL_DEBUG_MAC80211("leave - not ready\n");
3524                 mutex_unlock(&priv->mutex);
3525                 return;
3526         }
3527
3528         /* we are restarting association process
3529          * clear RXON_FILTER_ASSOC_MSK bit
3530          */
3531         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3532                 iwl_scan_cancel_timeout(priv, 100);
3533                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3534                 iwl4965_commit_rxon(priv);
3535         }
3536
3537         iwl_power_update_mode(priv, 0);
3538
3539         /* Per mac80211.h: This is only used in IBSS mode... */
3540         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3541
3542                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3543                 mutex_unlock(&priv->mutex);
3544                 return;
3545         }
3546
3547         iwl4965_set_rate(priv);
3548
3549         mutex_unlock(&priv->mutex);
3550
3551         IWL_DEBUG_MAC80211("leave\n");
3552 }
3553
3554 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3555 {
3556         struct iwl_priv *priv = hw->priv;
3557         unsigned long flags;
3558         __le64 timestamp;
3559
3560         mutex_lock(&priv->mutex);
3561         IWL_DEBUG_MAC80211("enter\n");
3562
3563         if (!iwl_is_ready_rf(priv)) {
3564                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3565                 mutex_unlock(&priv->mutex);
3566                 return -EIO;
3567         }
3568
3569         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3570                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3571                 mutex_unlock(&priv->mutex);
3572                 return -EIO;
3573         }
3574
3575         spin_lock_irqsave(&priv->lock, flags);
3576
3577         if (priv->ibss_beacon)
3578                 dev_kfree_skb(priv->ibss_beacon);
3579
3580         priv->ibss_beacon = skb;
3581
3582         priv->assoc_id = 0;
3583         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3584         priv->timestamp = le64_to_cpu(timestamp) +  (priv->beacon_int * 1000);
3585
3586         IWL_DEBUG_MAC80211("leave\n");
3587         spin_unlock_irqrestore(&priv->lock, flags);
3588
3589         iwl_reset_qos(priv);
3590
3591         iwl4965_post_associate(priv);
3592
3593         mutex_unlock(&priv->mutex);
3594
3595         return 0;
3596 }
3597
3598 /*****************************************************************************
3599  *
3600  * sysfs attributes
3601  *
3602  *****************************************************************************/
3603
3604 #ifdef CONFIG_IWLWIFI_DEBUG
3605
3606 /*
3607  * The following adds a new attribute to the sysfs representation
3608  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3609  * used for controlling the debug level.
3610  *
3611  * See the level definitions in iwl for details.
3612  */
3613
3614 static ssize_t show_debug_level(struct device *d,
3615                                 struct device_attribute *attr, char *buf)
3616 {
3617         struct iwl_priv *priv = d->driver_data;
3618
3619         return sprintf(buf, "0x%08X\n", priv->debug_level);
3620 }
3621 static ssize_t store_debug_level(struct device *d,
3622                                 struct device_attribute *attr,
3623                                  const char *buf, size_t count)
3624 {
3625         struct iwl_priv *priv = d->driver_data;
3626         char *p = (char *)buf;
3627         u32 val;
3628
3629         val = simple_strtoul(p, &p, 0);
3630         if (p == buf)
3631                 printk(KERN_INFO DRV_NAME
3632                        ": %s is not in hex or decimal form.\n", buf);
3633         else
3634                 priv->debug_level = val;
3635
3636         return strnlen(buf, count);
3637 }
3638
3639 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3640                         show_debug_level, store_debug_level);
3641
3642
3643 #endif /* CONFIG_IWLWIFI_DEBUG */
3644
3645
3646 static ssize_t show_version(struct device *d,
3647                                 struct device_attribute *attr, char *buf)
3648 {
3649         struct iwl_priv *priv = d->driver_data;
3650         struct iwl_alive_resp *palive = &priv->card_alive;
3651         ssize_t pos = 0;
3652         u16 eeprom_ver;
3653
3654         if (palive->is_valid)
3655                 pos += sprintf(buf + pos,
3656                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3657                                 "fw type: 0x%01X 0x%01X\n",
3658                                 palive->ucode_major, palive->ucode_minor,
3659                                 palive->sw_rev[0], palive->sw_rev[1],
3660                                 palive->ver_type, palive->ver_subtype);
3661         else
3662                 pos += sprintf(buf + pos, "fw not loaded\n");
3663
3664         if (priv->eeprom) {
3665                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3666                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3667                                  eeprom_ver);
3668         } else {
3669                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3670         }
3671
3672         return pos;
3673 }
3674
3675 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3676
3677 static ssize_t show_temperature(struct device *d,
3678                                 struct device_attribute *attr, char *buf)
3679 {
3680         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3681
3682         if (!iwl_is_alive(priv))
3683                 return -EAGAIN;
3684
3685         return sprintf(buf, "%d\n", priv->temperature);
3686 }
3687
3688 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3689
3690 static ssize_t show_tx_power(struct device *d,
3691                              struct device_attribute *attr, char *buf)
3692 {
3693         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3694         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3695 }
3696
3697 static ssize_t store_tx_power(struct device *d,
3698                               struct device_attribute *attr,
3699                               const char *buf, size_t count)
3700 {
3701         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3702         char *p = (char *)buf;
3703         u32 val;
3704
3705         val = simple_strtoul(p, &p, 10);
3706         if (p == buf)
3707                 printk(KERN_INFO DRV_NAME
3708                        ": %s is not in decimal form.\n", buf);
3709         else
3710                 iwl_set_tx_power(priv, val, false);
3711
3712         return count;
3713 }
3714
3715 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3716
3717 static ssize_t show_flags(struct device *d,
3718                           struct device_attribute *attr, char *buf)
3719 {
3720         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3721
3722         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3723 }
3724
3725 static ssize_t store_flags(struct device *d,
3726                            struct device_attribute *attr,
3727                            const char *buf, size_t count)
3728 {
3729         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3730         u32 flags = simple_strtoul(buf, NULL, 0);
3731
3732         mutex_lock(&priv->mutex);
3733         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3734                 /* Cancel any currently running scans... */
3735                 if (iwl_scan_cancel_timeout(priv, 100))
3736                         IWL_WARNING("Could not cancel scan.\n");
3737                 else {
3738                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3739                                        flags);
3740                         priv->staging_rxon.flags = cpu_to_le32(flags);
3741                         iwl4965_commit_rxon(priv);
3742                 }
3743         }
3744         mutex_unlock(&priv->mutex);
3745
3746         return count;
3747 }
3748
3749 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3750
3751 static ssize_t show_filter_flags(struct device *d,
3752                                  struct device_attribute *attr, char *buf)
3753 {
3754         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3755
3756         return sprintf(buf, "0x%04X\n",
3757                 le32_to_cpu(priv->active_rxon.filter_flags));
3758 }
3759
3760 static ssize_t store_filter_flags(struct device *d,
3761                                   struct device_attribute *attr,
3762                                   const char *buf, size_t count)
3763 {
3764         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3765         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3766
3767         mutex_lock(&priv->mutex);
3768         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3769                 /* Cancel any currently running scans... */
3770                 if (iwl_scan_cancel_timeout(priv, 100))
3771                         IWL_WARNING("Could not cancel scan.\n");
3772                 else {
3773                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3774                                        "0x%04X\n", filter_flags);
3775                         priv->staging_rxon.filter_flags =
3776                                 cpu_to_le32(filter_flags);
3777                         iwl4965_commit_rxon(priv);
3778                 }
3779         }
3780         mutex_unlock(&priv->mutex);
3781
3782         return count;
3783 }
3784
3785 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3786                    store_filter_flags);
3787
3788 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3789
3790 static ssize_t show_measurement(struct device *d,
3791                                 struct device_attribute *attr, char *buf)
3792 {
3793         struct iwl_priv *priv = dev_get_drvdata(d);
3794         struct iwl4965_spectrum_notification measure_report;
3795         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3796         u8 *data = (u8 *)&measure_report;
3797         unsigned long flags;
3798
3799         spin_lock_irqsave(&priv->lock, flags);
3800         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3801                 spin_unlock_irqrestore(&priv->lock, flags);
3802                 return 0;
3803         }
3804         memcpy(&measure_report, &priv->measure_report, size);
3805         priv->measurement_status = 0;
3806         spin_unlock_irqrestore(&priv->lock, flags);
3807
3808         while (size && (PAGE_SIZE - len)) {
3809                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3810                                    PAGE_SIZE - len, 1);
3811                 len = strlen(buf);
3812                 if (PAGE_SIZE - len)
3813                         buf[len++] = '\n';
3814
3815                 ofs += 16;
3816                 size -= min(size, 16U);
3817         }
3818
3819         return len;
3820 }
3821
3822 static ssize_t store_measurement(struct device *d,
3823                                  struct device_attribute *attr,
3824                                  const char *buf, size_t count)
3825 {
3826         struct iwl_priv *priv = dev_get_drvdata(d);
3827         struct ieee80211_measurement_params params = {
3828                 .channel = le16_to_cpu(priv->active_rxon.channel),
3829                 .start_time = cpu_to_le64(priv->last_tsf),
3830                 .duration = cpu_to_le16(1),
3831         };
3832         u8 type = IWL_MEASURE_BASIC;
3833         u8 buffer[32];
3834         u8 channel;
3835
3836         if (count) {
3837                 char *p = buffer;
3838                 strncpy(buffer, buf, min(sizeof(buffer), count));
3839                 channel = simple_strtoul(p, NULL, 0);
3840                 if (channel)
3841                         params.channel = channel;
3842
3843                 p = buffer;
3844                 while (*p && *p != ' ')
3845                         p++;
3846                 if (*p)
3847                         type = simple_strtoul(p + 1, NULL, 0);
3848         }
3849
3850         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3851                        "channel %d (for '%s')\n", type, params.channel, buf);
3852         iwl4965_get_measurement(priv, &params, type);
3853
3854         return count;
3855 }
3856
3857 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3858                    show_measurement, store_measurement);
3859 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3860
3861 static ssize_t store_retry_rate(struct device *d,
3862                                 struct device_attribute *attr,
3863                                 const char *buf, size_t count)
3864 {
3865         struct iwl_priv *priv = dev_get_drvdata(d);
3866
3867         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3868         if (priv->retry_rate <= 0)
3869                 priv->retry_rate = 1;
3870
3871         return count;
3872 }
3873
3874 static ssize_t show_retry_rate(struct device *d,
3875                                struct device_attribute *attr, char *buf)
3876 {
3877         struct iwl_priv *priv = dev_get_drvdata(d);
3878         return sprintf(buf, "%d", priv->retry_rate);
3879 }
3880
3881 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3882                    store_retry_rate);
3883
3884 static ssize_t store_power_level(struct device *d,
3885                                  struct device_attribute *attr,
3886                                  const char *buf, size_t count)
3887 {
3888         struct iwl_priv *priv = dev_get_drvdata(d);
3889         int ret;
3890         int mode;
3891
3892         mode = simple_strtoul(buf, NULL, 0);
3893         mutex_lock(&priv->mutex);
3894
3895         if (!iwl_is_ready(priv)) {
3896                 ret = -EAGAIN;
3897                 goto out;
3898         }
3899
3900         ret = iwl_power_set_user_mode(priv, mode);
3901         if (ret) {
3902                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3903                 goto out;
3904         }
3905         ret = count;
3906
3907  out:
3908         mutex_unlock(&priv->mutex);
3909         return ret;
3910 }
3911
3912 static ssize_t show_power_level(struct device *d,
3913                                 struct device_attribute *attr, char *buf)
3914 {
3915         struct iwl_priv *priv = dev_get_drvdata(d);
3916         int mode = priv->power_data.user_power_setting;
3917         int system = priv->power_data.system_power_setting;
3918         int level = priv->power_data.power_mode;
3919         char *p = buf;
3920
3921         switch (system) {
3922         case IWL_POWER_SYS_AUTO:
3923                 p += sprintf(p, "SYSTEM:auto");
3924                 break;
3925         case IWL_POWER_SYS_AC:
3926                 p += sprintf(p, "SYSTEM:ac");
3927                 break;
3928         case IWL_POWER_SYS_BATTERY:
3929                 p += sprintf(p, "SYSTEM:battery");
3930                 break;
3931         }
3932
3933         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3934         p += sprintf(p, "\tINDEX:%d", level);
3935         p += sprintf(p, "\n");
3936         return p - buf + 1;
3937 }
3938
3939 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3940                    store_power_level);
3941
3942 static ssize_t show_channels(struct device *d,
3943                              struct device_attribute *attr, char *buf)
3944 {
3945
3946         struct iwl_priv *priv = dev_get_drvdata(d);
3947         struct ieee80211_channel *channels = NULL;
3948         const struct ieee80211_supported_band *supp_band = NULL;
3949         int len = 0, i;
3950         int count = 0;
3951
3952         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3953                 return -EAGAIN;
3954
3955         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3956         channels = supp_band->channels;
3957         count = supp_band->n_channels;
3958
3959         len += sprintf(&buf[len],
3960                         "Displaying %d channels in 2.4GHz band "
3961                         "(802.11bg):\n", count);
3962
3963         for (i = 0; i < count; i++)
3964                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3965                                 ieee80211_frequency_to_channel(
3966                                 channels[i].center_freq),
3967                                 channels[i].max_power,
3968                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3969                                 " (IEEE 802.11h required)" : "",
3970                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3971                                 || (channels[i].flags &
3972                                 IEEE80211_CHAN_RADAR)) ? "" :
3973                                 ", IBSS",
3974                                 channels[i].flags &
3975                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3976                                 "passive only" : "active/passive");
3977
3978         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3979         channels = supp_band->channels;
3980         count = supp_band->n_channels;
3981
3982         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3983                         "(802.11a):\n", count);
3984
3985         for (i = 0; i < count; i++)
3986                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3987                                 ieee80211_frequency_to_channel(
3988                                 channels[i].center_freq),
3989                                 channels[i].max_power,
3990                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3991                                 " (IEEE 802.11h required)" : "",
3992                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3993                                 || (channels[i].flags &
3994                                 IEEE80211_CHAN_RADAR)) ? "" :
3995                                 ", IBSS",
3996                                 channels[i].flags &
3997                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3998                                 "passive only" : "active/passive");
3999
4000         return len;
4001 }
4002
4003 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4004
4005 static ssize_t show_statistics(struct device *d,
4006                                struct device_attribute *attr, char *buf)
4007 {
4008         struct iwl_priv *priv = dev_get_drvdata(d);
4009         u32 size = sizeof(struct iwl_notif_statistics);
4010         u32 len = 0, ofs = 0;
4011         u8 *data = (u8 *)&priv->statistics;
4012         int rc = 0;
4013
4014         if (!iwl_is_alive(priv))
4015                 return -EAGAIN;
4016
4017         mutex_lock(&priv->mutex);
4018         rc = iwl_send_statistics_request(priv, 0);
4019         mutex_unlock(&priv->mutex);
4020
4021         if (rc) {
4022                 len = sprintf(buf,
4023                               "Error sending statistics request: 0x%08X\n", rc);
4024                 return len;
4025         }
4026
4027         while (size && (PAGE_SIZE - len)) {
4028                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4029                                    PAGE_SIZE - len, 1);
4030                 len = strlen(buf);
4031                 if (PAGE_SIZE - len)
4032                         buf[len++] = '\n';
4033
4034                 ofs += 16;
4035                 size -= min(size, 16U);
4036         }
4037
4038         return len;
4039 }
4040
4041 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4042
4043 static ssize_t show_status(struct device *d,
4044                            struct device_attribute *attr, char *buf)
4045 {
4046         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4047         if (!iwl_is_alive(priv))
4048                 return -EAGAIN;
4049         return sprintf(buf, "0x%08x\n", (int)priv->status);
4050 }
4051
4052 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4053
4054 /*****************************************************************************
4055  *
4056  * driver setup and teardown
4057  *
4058  *****************************************************************************/
4059
4060 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4061 {
4062         priv->workqueue = create_workqueue(DRV_NAME);
4063
4064         init_waitqueue_head(&priv->wait_command_queue);
4065
4066         INIT_WORK(&priv->up, iwl4965_bg_up);
4067         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4068         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4069         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4070         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4071         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4072         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4073         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4074         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4075
4076         /* FIXME : remove when resolved PENDING */
4077         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4078         iwl_setup_scan_deferred_work(priv);
4079
4080         if (priv->cfg->ops->lib->setup_deferred_work)
4081                 priv->cfg->ops->lib->setup_deferred_work(priv);
4082
4083         init_timer(&priv->statistics_periodic);
4084         priv->statistics_periodic.data = (unsigned long)priv;
4085         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4086
4087         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4088                      iwl4965_irq_tasklet, (unsigned long)priv);
4089 }
4090
4091 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4092 {
4093         if (priv->cfg->ops->lib->cancel_deferred_work)
4094                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4095
4096         cancel_delayed_work_sync(&priv->init_alive_start);
4097         cancel_delayed_work(&priv->scan_check);
4098         cancel_delayed_work(&priv->alive_start);
4099         cancel_work_sync(&priv->beacon_update);
4100         del_timer_sync(&priv->statistics_periodic);
4101 }
4102
4103 static struct attribute *iwl4965_sysfs_entries[] = {
4104         &dev_attr_channels.attr,
4105         &dev_attr_flags.attr,
4106         &dev_attr_filter_flags.attr,
4107 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4108         &dev_attr_measurement.attr,
4109 #endif
4110         &dev_attr_power_level.attr,
4111         &dev_attr_retry_rate.attr,
4112         &dev_attr_statistics.attr,
4113         &dev_attr_status.attr,
4114         &dev_attr_temperature.attr,
4115         &dev_attr_tx_power.attr,
4116 #ifdef CONFIG_IWLWIFI_DEBUG
4117         &dev_attr_debug_level.attr,
4118 #endif
4119         &dev_attr_version.attr,
4120
4121         NULL
4122 };
4123
4124 static struct attribute_group iwl4965_attribute_group = {
4125         .name = NULL,           /* put in device directory */
4126         .attrs = iwl4965_sysfs_entries,
4127 };
4128
4129 static struct ieee80211_ops iwl4965_hw_ops = {
4130         .tx = iwl4965_mac_tx,
4131         .start = iwl4965_mac_start,
4132         .stop = iwl4965_mac_stop,
4133         .add_interface = iwl4965_mac_add_interface,
4134         .remove_interface = iwl4965_mac_remove_interface,
4135         .config = iwl4965_mac_config,
4136         .config_interface = iwl4965_mac_config_interface,
4137         .configure_filter = iwl4965_configure_filter,
4138         .set_key = iwl4965_mac_set_key,
4139         .update_tkip_key = iwl4965_mac_update_tkip_key,
4140         .get_stats = iwl4965_mac_get_stats,
4141         .get_tx_stats = iwl4965_mac_get_tx_stats,
4142         .conf_tx = iwl4965_mac_conf_tx,
4143         .reset_tsf = iwl4965_mac_reset_tsf,
4144         .bss_info_changed = iwl4965_bss_info_changed,
4145         .ampdu_action = iwl4965_mac_ampdu_action,
4146         .hw_scan = iwl4965_mac_hw_scan
4147 };
4148
4149 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4150 {
4151         int err = 0;
4152         struct iwl_priv *priv;
4153         struct ieee80211_hw *hw;
4154         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4155         unsigned long flags;
4156         DECLARE_MAC_BUF(mac);
4157
4158         /************************
4159          * 1. Allocating HW data
4160          ************************/
4161
4162         /* Disabling hardware scan means that mac80211 will perform scans
4163          * "the hard way", rather than using device's scan. */
4164         if (cfg->mod_params->disable_hw_scan) {
4165                 if (cfg->mod_params->debug & IWL_DL_INFO)
4166                         dev_printk(KERN_DEBUG, &(pdev->dev),
4167                                    "Disabling hw_scan\n");
4168                 iwl4965_hw_ops.hw_scan = NULL;
4169         }
4170
4171         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4172         if (!hw) {
4173                 err = -ENOMEM;
4174                 goto out;
4175         }
4176         priv = hw->priv;
4177         /* At this point both hw and priv are allocated. */
4178
4179         SET_IEEE80211_DEV(hw, &pdev->dev);
4180
4181         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4182         priv->cfg = cfg;
4183         priv->pci_dev = pdev;
4184
4185 #ifdef CONFIG_IWLWIFI_DEBUG
4186         priv->debug_level = priv->cfg->mod_params->debug;
4187         atomic_set(&priv->restrict_refcnt, 0);
4188 #endif
4189
4190         /**************************
4191          * 2. Initializing PCI bus
4192          **************************/
4193         if (pci_enable_device(pdev)) {
4194                 err = -ENODEV;
4195                 goto out_ieee80211_free_hw;
4196         }
4197
4198         pci_set_master(pdev);
4199
4200         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4201         if (!err)
4202                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4203         if (err) {
4204                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4205                 if (!err)
4206                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4207                 /* both attempts failed: */
4208                 if (err) {
4209                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4210                                 DRV_NAME);
4211                         goto out_pci_disable_device;
4212                 }
4213         }
4214
4215         err = pci_request_regions(pdev, DRV_NAME);
4216         if (err)
4217                 goto out_pci_disable_device;
4218
4219         pci_set_drvdata(pdev, priv);
4220
4221         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4222          * PCI Tx retries from interfering with C3 CPU state */
4223         pci_write_config_byte(pdev, 0x41, 0x00);
4224
4225         /***********************
4226          * 3. Read REV register
4227          ***********************/
4228         priv->hw_base = pci_iomap(pdev, 0, 0);
4229         if (!priv->hw_base) {
4230                 err = -ENODEV;
4231                 goto out_pci_release_regions;
4232         }
4233
4234         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4235                 (unsigned long long) pci_resource_len(pdev, 0));
4236         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4237
4238         iwl_hw_detect(priv);
4239         printk(KERN_INFO DRV_NAME
4240                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4241                 priv->cfg->name, priv->hw_rev);
4242
4243         /* amp init */
4244         err = priv->cfg->ops->lib->apm_ops.init(priv);
4245         if (err < 0) {
4246                 IWL_DEBUG_INFO("Failed to init APMG\n");
4247                 goto out_iounmap;
4248         }
4249         /*****************
4250          * 4. Read EEPROM
4251          *****************/
4252         /* Read the EEPROM */
4253         err = iwl_eeprom_init(priv);
4254         if (err) {
4255                 IWL_ERROR("Unable to init EEPROM\n");
4256                 goto out_iounmap;
4257         }
4258         err = iwl_eeprom_check_version(priv);
4259         if (err)
4260                 goto out_iounmap;
4261
4262         /* extract MAC Address */
4263         iwl_eeprom_get_mac(priv, priv->mac_addr);
4264         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4265         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4266
4267         /************************
4268          * 5. Setup HW constants
4269          ************************/
4270         if (iwl_set_hw_params(priv)) {
4271                 IWL_ERROR("failed to set hw parameters\n");
4272                 goto out_free_eeprom;
4273         }
4274
4275         /*******************
4276          * 6. Setup priv
4277          *******************/
4278
4279         err = iwl_init_drv(priv);
4280         if (err)
4281                 goto out_free_eeprom;
4282         /* At this point both hw and priv are initialized. */
4283
4284         /**********************************
4285          * 7. Initialize module parameters
4286          **********************************/
4287
4288         /* Disable radio (SW RF KILL) via parameter when loading driver */
4289         if (priv->cfg->mod_params->disable) {
4290                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4291                 IWL_DEBUG_INFO("Radio disabled.\n");
4292         }
4293
4294         /********************
4295          * 8. Setup services
4296          ********************/
4297         spin_lock_irqsave(&priv->lock, flags);
4298         iwl4965_disable_interrupts(priv);
4299         spin_unlock_irqrestore(&priv->lock, flags);
4300
4301         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4302         if (err) {
4303                 IWL_ERROR("failed to create sysfs device attributes\n");
4304                 goto out_uninit_drv;
4305         }
4306
4307
4308         iwl_setup_deferred_work(priv);
4309         iwl_setup_rx_handlers(priv);
4310
4311         /********************
4312          * 9. Conclude
4313          ********************/
4314         pci_save_state(pdev);
4315         pci_disable_device(pdev);
4316
4317         /**********************************
4318          * 10. Setup and register mac80211
4319          **********************************/
4320
4321         err = iwl_setup_mac(priv);
4322         if (err)
4323                 goto out_remove_sysfs;
4324
4325         err = iwl_dbgfs_register(priv, DRV_NAME);
4326         if (err)
4327                 IWL_ERROR("failed to create debugfs files\n");
4328
4329         err = iwl_rfkill_init(priv);
4330         if (err)
4331                 IWL_ERROR("Unable to initialize RFKILL system. "
4332                                   "Ignoring error: %d\n", err);
4333         iwl_power_initialize(priv);
4334         return 0;
4335
4336  out_remove_sysfs:
4337         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4338  out_uninit_drv:
4339         iwl_uninit_drv(priv);
4340  out_free_eeprom:
4341         iwl_eeprom_free(priv);
4342  out_iounmap:
4343         pci_iounmap(pdev, priv->hw_base);
4344  out_pci_release_regions:
4345         pci_release_regions(pdev);
4346         pci_set_drvdata(pdev, NULL);
4347  out_pci_disable_device:
4348         pci_disable_device(pdev);
4349  out_ieee80211_free_hw:
4350         ieee80211_free_hw(priv->hw);
4351  out:
4352         return err;
4353 }
4354
4355 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4356 {
4357         struct iwl_priv *priv = pci_get_drvdata(pdev);
4358         unsigned long flags;
4359
4360         if (!priv)
4361                 return;
4362
4363         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4364
4365         iwl_dbgfs_unregister(priv);
4366         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4367
4368         if (priv->mac80211_registered) {
4369                 ieee80211_unregister_hw(priv->hw);
4370                 priv->mac80211_registered = 0;
4371         }
4372
4373         set_bit(STATUS_EXIT_PENDING, &priv->status);
4374
4375         iwl4965_down(priv);
4376
4377         /* make sure we flush any pending irq or
4378          * tasklet for the driver
4379          */
4380         spin_lock_irqsave(&priv->lock, flags);
4381         iwl4965_disable_interrupts(priv);
4382         spin_unlock_irqrestore(&priv->lock, flags);
4383
4384         iwl_synchronize_irq(priv);
4385
4386         iwl_rfkill_unregister(priv);
4387         iwl4965_dealloc_ucode_pci(priv);
4388
4389         if (priv->rxq.bd)
4390                 iwl_rx_queue_free(priv, &priv->rxq);
4391         iwl_hw_txq_ctx_free(priv);
4392
4393         iwl_clear_stations_table(priv);
4394         iwl_eeprom_free(priv);
4395
4396
4397         /*netif_stop_queue(dev); */
4398         flush_workqueue(priv->workqueue);
4399
4400         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4401          * priv->workqueue... so we can't take down the workqueue
4402          * until now... */
4403         destroy_workqueue(priv->workqueue);
4404         priv->workqueue = NULL;
4405
4406         pci_iounmap(pdev, priv->hw_base);
4407         pci_release_regions(pdev);
4408         pci_disable_device(pdev);
4409         pci_set_drvdata(pdev, NULL);
4410
4411         iwl_uninit_drv(priv);
4412
4413         if (priv->ibss_beacon)
4414                 dev_kfree_skb(priv->ibss_beacon);
4415
4416         ieee80211_free_hw(priv->hw);
4417 }
4418
4419 #ifdef CONFIG_PM
4420
4421 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4422 {
4423         struct iwl_priv *priv = pci_get_drvdata(pdev);
4424
4425         if (priv->is_open) {
4426                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4427                 iwl4965_mac_stop(priv->hw);
4428                 priv->is_open = 1;
4429         }
4430
4431         pci_set_power_state(pdev, PCI_D3hot);
4432
4433         return 0;
4434 }
4435
4436 static int iwl4965_pci_resume(struct pci_dev *pdev)
4437 {
4438         struct iwl_priv *priv = pci_get_drvdata(pdev);
4439
4440         pci_set_power_state(pdev, PCI_D0);
4441
4442         if (priv->is_open)
4443                 iwl4965_mac_start(priv->hw);
4444
4445         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4446         return 0;
4447 }
4448
4449 #endif /* CONFIG_PM */
4450
4451 /*****************************************************************************
4452  *
4453  * driver and module entry point
4454  *
4455  *****************************************************************************/
4456
4457 /* Hardware specific file defines the PCI IDs table for that hardware module */
4458 static struct pci_device_id iwl_hw_card_ids[] = {
4459 #ifdef CONFIG_IWL4965
4460         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4461         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4462 #endif /* CONFIG_IWL4965 */
4463 #ifdef CONFIG_IWL5000
4464         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4465         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4466         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4467         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4468         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4469         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4470         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4471         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4472         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4473         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4474         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4475 #endif /* CONFIG_IWL5000 */
4476         {0}
4477 };
4478 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4479
4480 static struct pci_driver iwl_driver = {
4481         .name = DRV_NAME,
4482         .id_table = iwl_hw_card_ids,
4483         .probe = iwl4965_pci_probe,
4484         .remove = __devexit_p(iwl4965_pci_remove),
4485 #ifdef CONFIG_PM
4486         .suspend = iwl4965_pci_suspend,
4487         .resume = iwl4965_pci_resume,
4488 #endif
4489 };
4490
4491 static int __init iwl4965_init(void)
4492 {
4493
4494         int ret;
4495         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4496         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4497
4498         ret = iwlagn_rate_control_register();
4499         if (ret) {
4500                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4501                 return ret;
4502         }
4503
4504         ret = pci_register_driver(&iwl_driver);
4505         if (ret) {
4506                 IWL_ERROR("Unable to initialize PCI module\n");
4507                 goto error_register;
4508         }
4509
4510         return ret;
4511
4512 error_register:
4513         iwlagn_rate_control_unregister();
4514         return ret;
4515 }
4516
4517 static void __exit iwl4965_exit(void)
4518 {
4519         pci_unregister_driver(&iwl_driver);
4520         iwlagn_rate_control_unregister();
4521 }
4522
4523 module_exit(iwl4965_exit);
4524 module_init(iwl4965_init);