drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-helpers.h"
  52 #include "iwl-sta.h"
  53 #include "iwl-calib.h"
  54
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 112  *
 113  * NOTE:  This is really only useful during development and can eventually
 114  * be #ifdef'd out once the driver is stable and folks aren't actively
 115  * making changes
 116  */
 117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 118 {
 119         int error = 0;
 120         int counter = 1;
 121
 122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 123                 error |= le32_to_cpu(rxon->flags &
 124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 125                                  RXON_FLG_RADAR_DETECT_MSK));
 126                 if (error)
 127                         IWL_WARNING("check 24G fields %d | %d\n",
 128                                     counter++, error);
 129         } else {
 130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 132                 if (error)
 133                         IWL_WARNING("check 52 fields %d | %d\n",
 134                                     counter++, error);
 135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 136                 if (error)
 137                         IWL_WARNING("check 52 CCK %d | %d\n",
 138                                     counter++, error);
 139         }
 140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 141         if (error)
 142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 143
 144         /* make sure basic rates 6Mbps and 1Mbps are supported */
 145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 147         if (error)
 148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 149
 150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 151         if (error)
 152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 153
 154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 156         if (error)
 157                 IWL_WARNING("check CCK and short slot %d | %d\n",
 158                             counter++, error);
 159
 160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 162         if (error)
 163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 164                             counter++, error);
 165
 166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 168         if (error)
 169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 170                             counter++, error);
 171
 172         if (error)
 173                 IWL_WARNING("Tuning to channel %d\n",
 174                             le16_to_cpu(rxon->channel));
 175
 176         if (error) {
 177                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 185  * @priv: staging_rxon is compared to active_rxon
 186  *
 187  * If the RXON structure is changing enough to require a new tune,
 188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 190  */
 191 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 192 {
 193
 194         /* These items are only settable from the full RXON command */
 195         if (!(iwl_is_associated(priv)) ||
 196             compare_ether_addr(priv->staging_rxon.bssid_addr,
 197                                priv->active_rxon.bssid_addr) ||
 198             compare_ether_addr(priv->staging_rxon.node_addr,
 199                                priv->active_rxon.node_addr) ||
 200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 201                                priv->active_rxon.wlap_bssid_addr) ||
 202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 204             (priv->staging_rxon.air_propagation !=
 205              priv->active_rxon.air_propagation) ||
 206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 210             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 211             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 212                 return 1;
 213
 214         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 215          * be updated with the RXON_ASSOC command -- however only some
 216          * flag transitions are allowed using RXON_ASSOC */
 217
 218         /* Check if we are not switching bands */
 219         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 220             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 221                 return 1;
 222
 223         /* Check if we are switching association toggle */
 224         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 225                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 226                 return 1;
 227
 228         return 0;
 229 }
 230
 231 /**
 232  * iwl4965_commit_rxon - commit staging_rxon to hardware
 233  *
 234  * The RXON command in staging_rxon is committed to the hardware and
 235  * the active_rxon structure is updated with the new data.  This
 236  * function correctly transitions out of the RXON_ASSOC_MSK state if
 237  * a HW tune is required based on the RXON structure changes.
 238  */
 239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 240 {
 241         /* cast away the const for active_rxon in this function */
 242         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 243         DECLARE_MAC_BUF(mac);
 244         int ret;
 245         bool new_assoc =
 246                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 247
 248         if (!iwl_is_alive(priv))
 249                 return -EBUSY;
 250
 251         /* always get timestamp with Rx frame */
 252         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 253         /* allow CTS-to-self if possible. this is relevant only for
 254          * 5000, but will not damage 4965 */
 255         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 256
 257         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 258         if (ret) {
 259                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 260                 return -EINVAL;
 261         }
 262
 263         /* If we don't need to send a full RXON, we can use
 264          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 265          * and other flags for the current radio configuration. */
 266         if (!iwl4965_full_rxon_required(priv)) {
 267                 ret = iwl_send_rxon_assoc(priv);
 268                 if (ret) {
 269                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 270                         return ret;
 271                 }
 272
 273                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 274                 return 0;
 275         }
 276
 277         /* station table will be cleared */
 278         priv->assoc_station_added = 0;
 279
 280         /* If we are currently associated and the new config requires
 281          * an RXON_ASSOC and the new config wants the associated mask enabled,
 282          * we must clear the associated from the active configuration
 283          * before we apply the new config */
 284         if (iwl_is_associated(priv) && new_assoc) {
 285                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 286                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 287
 288                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 289                                       sizeof(struct iwl_rxon_cmd),
 290                                       &priv->active_rxon);
 291
 292                 /* If the mask clearing failed then we set
 293                  * active_rxon back to what it was previously */
 294                 if (ret) {
 295                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 296                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 297                         return ret;
 298                 }
 299         }
 300
 301         IWL_DEBUG_INFO("Sending RXON\n"
 302                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 303                        "* channel = %d\n"
 304                        "* bssid = %s\n",
 305                        (new_assoc ? "" : "out"),
 306                        le16_to_cpu(priv->staging_rxon.channel),
 307                        print_mac(mac, priv->staging_rxon.bssid_addr));
 308
 309         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 310
 311         /* Apply the new configuration
 312          * RXON unassoc clears the station table in uCode, send it before
 313          * we add the bcast station. If assoc bit is set, we will send RXON
 314          * after having added the bcast and bssid station.
 315          */
 316         if (!new_assoc) {
 317                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 318                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 319                 if (ret) {
 320                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 321                         return ret;
 322                 }
 323                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 324         }
 325
 326         iwl_clear_stations_table(priv);
 327
 328         if (!priv->error_recovering)
 329                 priv->start_calib = 0;
 330
 331         /* Add the broadcast address so we can send broadcast frames */
 332         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 333                                                 IWL_INVALID_STATION) {
 334                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 335                 return -EIO;
 336         }
 337
 338         /* If we have set the ASSOC_MSK and we are in BSS mode then
 339          * add the IWL_AP_ID to the station rate table */
 340         if (new_assoc) {
 341                 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 342                         ret = iwl_rxon_add_station(priv,
 343                                            priv->active_rxon.bssid_addr, 1);
 344                         if (ret == IWL_INVALID_STATION) {
 345                                 IWL_ERROR("Error adding AP address for TX.\n");
 346                                 return -EIO;
 347                         }
 348                         priv->assoc_station_added = 1;
 349                         if (priv->default_wep_key &&
 350                             iwl_send_static_wepkey_cmd(priv, 0))
 351                                 IWL_ERROR("Could not send WEP static key.\n");
 352                 }
 353
 354                 /* Apply the new configuration
 355                  * RXON assoc doesn't clear the station table in uCode,
 356                  */
 357                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 358                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 359                 if (ret) {
 360                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 361                         return ret;
 362                 }
 363                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 364         }
 365
 366         iwl_init_sensitivity(priv);
 367
 368         /* If we issue a new RXON command which required a tune then we must
 369          * send a new TXPOWER command or we won't be able to Tx any frames */
 370         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 371         if (ret) {
 372                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 373                 return ret;
 374         }
 375
 376         return 0;
 377 }
 378
 379 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 380 {
 381
 382         iwl_set_rxon_chain(priv);
 383         iwl4965_commit_rxon(priv);
 384 }
 385
 386 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 387 {
 388         struct iwl4965_bt_cmd bt_cmd = {
 389                 .flags = 3,
 390                 .lead_time = 0xAA,
 391                 .max_kill = 1,
 392                 .kill_ack_mask = 0,
 393                 .kill_cts_mask = 0,
 394         };
 395
 396         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 397                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 398 }
 399
 400 static void iwl_clear_free_frames(struct iwl_priv *priv)
 401 {
 402         struct list_head *element;
 403
 404         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 405                        priv->frames_count);
 406
 407         while (!list_empty(&priv->free_frames)) {
 408                 element = priv->free_frames.next;
 409                 list_del(element);
 410                 kfree(list_entry(element, struct iwl_frame, list));
 411                 priv->frames_count--;
 412         }
 413
 414         if (priv->frames_count) {
 415                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 416                             priv->frames_count);
 417                 priv->frames_count = 0;
 418         }
 419 }
 420
 421 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 422 {
 423         struct iwl_frame *frame;
 424         struct list_head *element;
 425         if (list_empty(&priv->free_frames)) {
 426                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 427                 if (!frame) {
 428                         IWL_ERROR("Could not allocate frame!\n");
 429                         return NULL;
 430                 }
 431
 432                 priv->frames_count++;
 433                 return frame;
 434         }
 435
 436         element = priv->free_frames.next;
 437         list_del(element);
 438         return list_entry(element, struct iwl_frame, list);
 439 }
 440
 441 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 442 {
 443         memset(frame, 0, sizeof(*frame));
 444         list_add(&frame->list, &priv->free_frames);
 445 }
 446
 447 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 448                                           struct ieee80211_hdr *hdr,
 449                                           const u8 *dest, int left)
 450 {
 451         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 452             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 453              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 454                 return 0;
 455
 456         if (priv->ibss_beacon->len > left)
 457                 return 0;
 458
 459         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 460
 461         return priv->ibss_beacon->len;
 462 }
 463
 464 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 465 {
 466         int i;
 467         int rate_mask;
 468
 469         /* Set rate mask*/
 470         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 471                 rate_mask = priv->active_rate_basic & 0xF;
 472         else
 473                 rate_mask = priv->active_rate_basic & 0xFF0;
 474
 475         /* Find lowest valid rate */
 476         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 477                                         i = iwl_rates[i].next_ieee) {
 478                 if (rate_mask & (1 << i))
 479                         return iwl_rates[i].plcp;
 480         }
 481
 482         /* No valid rate was found. Assign the lowest one */
 483         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 484                 return IWL_RATE_1M_PLCP;
 485         else
 486                 return IWL_RATE_6M_PLCP;
 487 }
 488
 489 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
 490                                        struct iwl_frame *frame, u8 rate)
 491 {
 492         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 493         unsigned int frame_size;
 494
 495         tx_beacon_cmd = &frame->u.beacon;
 496         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 497
 498         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 499         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 500
 501         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 502                                 iwl_bcast_addr,
 503                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 504
 505         BUG_ON(frame_size > MAX_MPDU_SIZE);
 506         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 507
 508         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 509                 tx_beacon_cmd->tx.rate_n_flags =
 510                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 511         else
 512                 tx_beacon_cmd->tx.rate_n_flags =
 513                         iwl_hw_set_rate_n_flags(rate, 0);
 514
 515         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 516                                      TX_CMD_FLG_TSF_MSK |
 517                                      TX_CMD_FLG_STA_RATE_MSK;
 518
 519         return sizeof(*tx_beacon_cmd) + frame_size;
 520 }
 521 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 522 {
 523         struct iwl_frame *frame;
 524         unsigned int frame_size;
 525         int rc;
 526         u8 rate;
 527
 528         frame = iwl_get_free_frame(priv);
 529
 530         if (!frame) {
 531                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 532                           "command.\n");
 533                 return -ENOMEM;
 534         }
 535
 536         rate = iwl4965_rate_get_lowest_plcp(priv);
 537
 538         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 539
 540         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 541                               &frame->u.cmd[0]);
 542
 543         iwl_free_frame(priv, frame);
 544
 545         return rc;
 546 }
 547
 548 /******************************************************************************
 549  *
 550  * Misc. internal state and helper functions
 551  *
 552  ******************************************************************************/
 553
 554 static void iwl4965_ht_conf(struct iwl_priv *priv,
 555                             struct ieee80211_bss_conf *bss_conf)
 556 {
 557         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 558         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 559         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 560
 561         IWL_DEBUG_MAC80211("enter: \n");
 562
 563         iwl_conf->is_ht = bss_conf->assoc_ht;
 564
 565         if (!iwl_conf->is_ht)
 566                 return;
 567
 568         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 569
 570         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 571                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 572         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 573                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 574
 575         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 576         iwl_conf->max_amsdu_size =
 577                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 578
 579         iwl_conf->supported_chan_width =
 580                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 581         iwl_conf->extension_chan_offset =
 582                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 583         /* If no above or below channel supplied disable FAT channel */
 584         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 585             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 586                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 587                 iwl_conf->supported_chan_width = 0;
 588         }
 589
 590         iwl_conf->tx_mimo_ps_mode =
 591                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 592         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 593
 594         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 595         iwl_conf->tx_chan_width =
 596                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 597         iwl_conf->ht_protection =
 598                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 599         iwl_conf->non_GF_STA_present =
 600                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 601
 602         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 603         IWL_DEBUG_MAC80211("leave\n");
 604 }
 605
 606 /*
 607  * QoS  support
 608 */
 609 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 610 {
 611         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 612                 return;
 613
 614         if (!priv->qos_data.qos_enable)
 615                 return;
 616
 617         priv->qos_data.def_qos_parm.qos_flags = 0;
 618
 619         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 620             !priv->qos_data.qos_cap.q_AP.txop_request)
 621                 priv->qos_data.def_qos_parm.qos_flags |=
 622                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 623         if (priv->qos_data.qos_active)
 624                 priv->qos_data.def_qos_parm.qos_flags |=
 625                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 626
 627         if (priv->current_ht_config.is_ht)
 628                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 629
 630         if (force || iwl_is_associated(priv)) {
 631                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 632                                 priv->qos_data.qos_active,
 633                                 priv->qos_data.def_qos_parm.qos_flags);
 634
 635                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 636                                        sizeof(struct iwl_qosparam_cmd),
 637                                        &priv->qos_data.def_qos_parm, NULL);
 638         }
 639 }
 640
 641 #define MAX_UCODE_BEACON_INTERVAL       4096
 642
 643 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 644 {
 645         u16 new_val = 0;
 646         u16 beacon_factor = 0;
 647
 648         beacon_factor =
 649             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 650                 / MAX_UCODE_BEACON_INTERVAL;
 651         new_val = beacon_val / beacon_factor;
 652
 653         return cpu_to_le16(new_val);
 654 }
 655
 656 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 657 {
 658         u64 interval_tm_unit;
 659         u64 tsf, result;
 660         unsigned long flags;
 661         struct ieee80211_conf *conf = NULL;
 662         u16 beacon_int = 0;
 663
 664         conf = ieee80211_get_hw_conf(priv->hw);
 665
 666         spin_lock_irqsave(&priv->lock, flags);
 667         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 668         priv->rxon_timing.timestamp.dw[0] =
 669                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 670
 671         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 672
 673         tsf = priv->timestamp;
 674
 675         beacon_int = priv->beacon_int;
 676         spin_unlock_irqrestore(&priv->lock, flags);
 677
 678         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 679                 if (beacon_int == 0) {
 680                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 681                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 682                 } else {
 683                         priv->rxon_timing.beacon_interval =
 684                                 cpu_to_le16(beacon_int);
 685                         priv->rxon_timing.beacon_interval =
 686                             iwl4965_adjust_beacon_interval(
 687                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 688                 }
 689
 690                 priv->rxon_timing.atim_window = 0;
 691         } else {
 692                 priv->rxon_timing.beacon_interval =
 693                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 694                 /* TODO: we need to get atim_window from upper stack
 695                  * for now we set to 0 */
 696                 priv->rxon_timing.atim_window = 0;
 697         }
 698
 699         interval_tm_unit =
 700                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 701         result = do_div(tsf, interval_tm_unit);
 702         priv->rxon_timing.beacon_init_val =
 703             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 704
 705         IWL_DEBUG_ASSOC
 706             ("beacon interval %d beacon timer %d beacon tim %d\n",
 707                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 708                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 709                 le16_to_cpu(priv->rxon_timing.atim_window));
 710 }
 711
 712 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 713                                    enum ieee80211_band band)
 714 {
 715         if (band == IEEE80211_BAND_5GHZ) {
 716                 priv->staging_rxon.flags &=
 717                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 718                       | RXON_FLG_CCK_MSK);
 719                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 720         } else {
 721                 /* Copied from iwl4965_post_associate() */
 722                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 723                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 724                 else
 725                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 726
 727                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 728                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 729
 730                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 731                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 732                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 733         }
 734 }
 735
 736 /*
 737  * initialize rxon structure with default values from eeprom
 738  */
 739 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 740 {
 741         const struct iwl_channel_info *ch_info;
 742
 743         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 744
 745         switch (priv->iw_mode) {
 746         case IEEE80211_IF_TYPE_AP:
 747                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 748                 break;
 749
 750         case IEEE80211_IF_TYPE_STA:
 751                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 752                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 753                 break;
 754
 755         case IEEE80211_IF_TYPE_IBSS:
 756                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 757                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 758                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 759                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 760                 break;
 761
 762         case IEEE80211_IF_TYPE_MNTR:
 763                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 764                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 765                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 766                 break;
 767         default:
 768                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 769                 break;
 770         }
 771
 772 #if 0
 773         /* TODO:  Figure out when short_preamble would be set and cache from
 774          * that */
 775         if (!hw_to_local(priv->hw)->short_preamble)
 776                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 777         else
 778                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 779 #endif
 780
 781         ch_info = iwl_get_channel_info(priv, priv->band,
 782                                        le16_to_cpu(priv->active_rxon.channel));
 783
 784         if (!ch_info)
 785                 ch_info = &priv->channel_info[0];
 786
 787         /*
 788          * in some case A channels are all non IBSS
 789          * in this case force B/G channel
 790          */
 791         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 792             !(is_channel_ibss(ch_info)))
 793                 ch_info = &priv->channel_info[0];
 794
 795         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 796         priv->band = ch_info->band;
 797
 798         iwl_set_flags_for_band(priv, priv->band);
 799
 800         priv->staging_rxon.ofdm_basic_rates =
 801             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 802         priv->staging_rxon.cck_basic_rates =
 803             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 804
 805         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 806                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 807         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 808         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 809         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 810         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 811         iwl_set_rxon_chain(priv);
 812 }
 813
 814 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 815 {
 816         priv->iw_mode = mode;
 817
 818         iwl4965_connection_init_rx_config(priv);
 819         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 820
 821         iwl_clear_stations_table(priv);
 822
 823         /* dont commit rxon if rf-kill is on*/
 824         if (!iwl_is_ready_rf(priv))
 825                 return -EAGAIN;
 826
 827         cancel_delayed_work(&priv->scan_check);
 828         if (iwl_scan_cancel_timeout(priv, 100)) {
 829                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 830                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 831                 return -EAGAIN;
 832         }
 833
 834         iwl4965_commit_rxon(priv);
 835
 836         return 0;
 837 }
 838
 839 static void iwl4965_set_rate(struct iwl_priv *priv)
 840 {
 841         const struct ieee80211_supported_band *hw = NULL;
 842         struct ieee80211_rate *rate;
 843         int i;
 844
 845         hw = iwl_get_hw_mode(priv, priv->band);
 846         if (!hw) {
 847                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 848                 return;
 849         }
 850
 851         priv->active_rate = 0;
 852         priv->active_rate_basic = 0;
 853
 854         for (i = 0; i < hw->n_bitrates; i++) {
 855                 rate = &(hw->bitrates[i]);
 856                 if (rate->hw_value < IWL_RATE_COUNT)
 857                         priv->active_rate |= (1 << rate->hw_value);
 858         }
 859
 860         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 861                        priv->active_rate, priv->active_rate_basic);
 862
 863         /*
 864          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 865          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 866          * OFDM
 867          */
 868         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 869                 priv->staging_rxon.cck_basic_rates =
 870                     ((priv->active_rate_basic &
 871                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 872         else
 873                 priv->staging_rxon.cck_basic_rates =
 874                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 875
 876         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 877                 priv->staging_rxon.ofdm_basic_rates =
 878                     ((priv->active_rate_basic &
 879                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 880                       IWL_FIRST_OFDM_RATE) & 0xFF;
 881         else
 882                 priv->staging_rxon.ofdm_basic_rates =
 883                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 884 }
 885
 886 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 887
 888 #include "iwl-spectrum.h"
 889
 890 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 891 #define BEACON_TIME_MASK_HIGH   0xFF000000
 892 #define TIME_UNIT               1024
 893
 894 /*
 895  * extended beacon time format
 896  * time in usec will be changed into a 32-bit value in 8:24 format
 897  * the high 1 byte is the beacon counts
 898  * the lower 3 bytes is the time in usec within one beacon interval
 899  */
 900
 901 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 902 {
 903         u32 quot;
 904         u32 rem;
 905         u32 interval = beacon_interval * 1024;
 906
 907         if (!interval || !usec)
 908                 return 0;
 909
 910         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 911         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 912
 913         return (quot << 24) + rem;
 914 }
 915
 916 /* base is usually what we get from ucode with each received frame,
 917  * the same as HW timer counter counting down
 918  */
 919
 920 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 921 {
 922         u32 base_low = base & BEACON_TIME_MASK_LOW;
 923         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 924         u32 interval = beacon_interval * TIME_UNIT;
 925         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 926             (addon & BEACON_TIME_MASK_HIGH);
 927
 928         if (base_low > addon_low)
 929                 res += base_low - addon_low;
 930         else if (base_low < addon_low) {
 931                 res += interval + base_low - addon_low;
 932                 res += (1 << 24);
 933         } else
 934                 res += (1 << 24);
 935
 936         return cpu_to_le32(res);
 937 }
 938
 939 static int iwl4965_get_measurement(struct iwl_priv *priv,
 940                                struct ieee80211_measurement_params *params,
 941                                u8 type)
 942 {
 943         struct iwl4965_spectrum_cmd spectrum;
 944         struct iwl_rx_packet *res;
 945         struct iwl_host_cmd cmd = {
 946                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 947                 .data = (void *)&spectrum,
 948                 .meta.flags = CMD_WANT_SKB,
 949         };
 950         u32 add_time = le64_to_cpu(params->start_time);
 951         int rc;
 952         int spectrum_resp_status;
 953         int duration = le16_to_cpu(params->duration);
 954
 955         if (iwl_is_associated(priv))
 956                 add_time =
 957                     iwl4965_usecs_to_beacons(
 958                         le64_to_cpu(params->start_time) - priv->last_tsf,
 959                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 960
 961         memset(&spectrum, 0, sizeof(spectrum));
 962
 963         spectrum.channel_count = cpu_to_le16(1);
 964         spectrum.flags =
 965             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 966         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 967         cmd.len = sizeof(spectrum);
 968         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 969
 970         if (iwl_is_associated(priv))
 971                 spectrum.start_time =
 972                     iwl4965_add_beacon_time(priv->last_beacon_time,
 973                                 add_time,
 974                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 975         else
 976                 spectrum.start_time = 0;
 977
 978         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 979         spectrum.channels[0].channel = params->channel;
 980         spectrum.channels[0].type = type;
 981         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 982                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 983                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 984
 985         rc = iwl_send_cmd_sync(priv, &cmd);
 986         if (rc)
 987                 return rc;
 988
 989         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 990         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 991                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 992                 rc = -EIO;
 993         }
 994
 995         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 996         switch (spectrum_resp_status) {
 997         case 0:         /* Command will be handled */
 998                 if (res->u.spectrum.id != 0xff) {
 999                         IWL_DEBUG_INFO
1000                             ("Replaced existing measurement: %d\n",
1001                              res->u.spectrum.id);
1002                         priv->measurement_status &= ~MEASUREMENT_READY;
1003                 }
1004                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1005                 rc = 0;
1006                 break;
1007
1008         case 1:         /* Command will not be handled */
1009                 rc = -EAGAIN;
1010                 break;
1011         }
1012
1013         dev_kfree_skb_any(cmd.meta.u.skb);
1014
1015         return rc;
1016 }
1017 #endif
1018
1019 /******************************************************************************
1020  *
1021  * Generic RX handler implementations
1022  *
1023  ******************************************************************************/
1024 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1025                                 struct iwl_rx_mem_buffer *rxb)
1026 {
1027         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1028         struct iwl_alive_resp *palive;
1029         struct delayed_work *pwork;
1030
1031         palive = &pkt->u.alive_frame;
1032
1033         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1034                        "0x%01X 0x%01X\n",
1035                        palive->is_valid, palive->ver_type,
1036                        palive->ver_subtype);
1037
1038         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1039                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1040                 memcpy(&priv->card_alive_init,
1041                        &pkt->u.alive_frame,
1042                        sizeof(struct iwl_init_alive_resp));
1043                 pwork = &priv->init_alive_start;
1044         } else {
1045                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1046                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1047                        sizeof(struct iwl_alive_resp));
1048                 pwork = &priv->alive_start;
1049         }
1050
1051         /* We delay the ALIVE response by 5ms to
1052          * give the HW RF Kill time to activate... */
1053         if (palive->is_valid == UCODE_VALID_OK)
1054                 queue_delayed_work(priv->workqueue, pwork,
1055                                    msecs_to_jiffies(5));
1056         else
1057                 IWL_WARNING("uCode did not respond OK.\n");
1058 }
1059
1060 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1061                                    struct iwl_rx_mem_buffer *rxb)
1062 {
1063         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1064
1065         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1066                 "seq 0x%04X ser 0x%08X\n",
1067                 le32_to_cpu(pkt->u.err_resp.error_type),
1068                 get_cmd_string(pkt->u.err_resp.cmd_id),
1069                 pkt->u.err_resp.cmd_id,
1070                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1071                 le32_to_cpu(pkt->u.err_resp.error_info));
1072 }
1073
1074 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1075
1076 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1077 {
1078         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1079         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1080         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1081         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1082                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1083         rxon->channel = csa->channel;
1084         priv->staging_rxon.channel = csa->channel;
1085 }
1086
1087 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1088                                           struct iwl_rx_mem_buffer *rxb)
1089 {
1090 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1091         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1092         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1093
1094         if (!report->state) {
1095                 IWL_DEBUG(IWL_DL_11H,
1096                         "Spectrum Measure Notification: Start\n");
1097                 return;
1098         }
1099
1100         memcpy(&priv->measure_report, report, sizeof(*report));
1101         priv->measurement_status |= MEASUREMENT_READY;
1102 #endif
1103 }
1104
1105 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1106                                       struct iwl_rx_mem_buffer *rxb)
1107 {
1108 #ifdef CONFIG_IWLWIFI_DEBUG
1109         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1110         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1111         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1112                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1113 #endif
1114 }
1115
1116 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1117                                              struct iwl_rx_mem_buffer *rxb)
1118 {
1119         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1120         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1121                         "notification for %s:\n",
1122                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1123         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1124 }
1125
1126 static void iwl4965_bg_beacon_update(struct work_struct *work)
1127 {
1128         struct iwl_priv *priv =
1129                 container_of(work, struct iwl_priv, beacon_update);
1130         struct sk_buff *beacon;
1131
1132         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1133         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1134
1135         if (!beacon) {
1136                 IWL_ERROR("update beacon failed\n");
1137                 return;
1138         }
1139
1140         mutex_lock(&priv->mutex);
1141         /* new beacon skb is allocated every time; dispose previous.*/
1142         if (priv->ibss_beacon)
1143                 dev_kfree_skb(priv->ibss_beacon);
1144
1145         priv->ibss_beacon = beacon;
1146         mutex_unlock(&priv->mutex);
1147
1148         iwl4965_send_beacon_cmd(priv);
1149 }
1150
1151 /**
1152  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1153  *
1154  * This callback is provided in order to send a statistics request.
1155  *
1156  * This timer function is continually reset to execute within
1157  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1158  * was received.  We need to ensure we receive the statistics in order
1159  * to update the temperature used for calibrating the TXPOWER.
1160  */
1161 static void iwl4965_bg_statistics_periodic(unsigned long data)
1162 {
1163         struct iwl_priv *priv = (struct iwl_priv *)data;
1164
1165         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1166                 return;
1167
1168         iwl_send_statistics_request(priv, CMD_ASYNC);
1169 }
1170
1171 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1172                                 struct iwl_rx_mem_buffer *rxb)
1173 {
1174 #ifdef CONFIG_IWLWIFI_DEBUG
1175         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1176         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1177         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1178
1179         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1180                 "tsf %d %d rate %d\n",
1181                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1182                 beacon->beacon_notify_hdr.failure_frame,
1183                 le32_to_cpu(beacon->ibss_mgr_status),
1184                 le32_to_cpu(beacon->high_tsf),
1185                 le32_to_cpu(beacon->low_tsf), rate);
1186 #endif
1187
1188         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1189             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1190                 queue_work(priv->workqueue, &priv->beacon_update);
1191 }
1192
1193 /* Handle notification from uCode that card's power state is changing
1194  * due to software, hardware, or critical temperature RFKILL */
1195 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1196                                     struct iwl_rx_mem_buffer *rxb)
1197 {
1198         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1199         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1200         unsigned long status = priv->status;
1201
1202         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1203                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1204                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1205
1206         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1207                      RF_CARD_DISABLED)) {
1208
1209                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1210                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1211
1212                 if (!iwl_grab_nic_access(priv)) {
1213                         iwl_write_direct32(
1214                                 priv, HBUS_TARG_MBX_C,
1215                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1216
1217                         iwl_release_nic_access(priv);
1218                 }
1219
1220                 if (!(flags & RXON_CARD_DISABLED)) {
1221                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1222                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1223                         if (!iwl_grab_nic_access(priv)) {
1224                                 iwl_write_direct32(
1225                                         priv, HBUS_TARG_MBX_C,
1226                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1227
1228                                 iwl_release_nic_access(priv);
1229                         }
1230                 }
1231
1232                 if (flags & RF_CARD_DISABLED) {
1233                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1234                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1235                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1236                         if (!iwl_grab_nic_access(priv))
1237                                 iwl_release_nic_access(priv);
1238                 }
1239         }
1240
1241         if (flags & HW_CARD_DISABLED)
1242                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1243         else
1244                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1245
1246
1247         if (flags & SW_CARD_DISABLED)
1248                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1249         else
1250                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1251
1252         if (!(flags & RXON_CARD_DISABLED))
1253                 iwl_scan_cancel(priv);
1254
1255         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1256              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1257             (test_bit(STATUS_RF_KILL_SW, &status) !=
1258              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1259                 queue_work(priv->workqueue, &priv->rf_kill);
1260         else
1261                 wake_up_interruptible(&priv->wait_command_queue);
1262 }
1263
1264 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1265 {
1266         int ret;
1267         unsigned long flags;
1268
1269         spin_lock_irqsave(&priv->lock, flags);
1270         ret = iwl_grab_nic_access(priv);
1271         if (ret)
1272                 goto err;
1273
1274         if (src == IWL_PWR_SRC_VAUX) {
1275                 u32 val;
1276                 ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
1277                                             &val);
1278
1279                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1280                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1281                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1282                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1283         } else {
1284                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1285                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1286                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1287         }
1288
1289         iwl_release_nic_access(priv);
1290 err:
1291         spin_unlock_irqrestore(&priv->lock, flags);
1292         return ret;
1293 }
1294
1295 /**
1296  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1297  *
1298  * Setup the RX handlers for each of the reply types sent from the uCode
1299  * to the host.
1300  *
1301  * This function chains into the hardware specific files for them to setup
1302  * any hardware specific handlers as well.
1303  */
1304 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1305 {
1306         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1307         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1308         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1309         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1310             iwl4965_rx_spectrum_measure_notif;
1311         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1312         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1313             iwl4965_rx_pm_debug_statistics_notif;
1314         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1315
1316         /*
1317          * The same handler is used for both the REPLY to a discrete
1318          * statistics request from the host as well as for the periodic
1319          * statistics notifications (after received beacons) from the uCode.
1320          */
1321         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1322         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1323
1324         iwl_setup_rx_scan_handlers(priv);
1325
1326         /* status change handler */
1327         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1328
1329         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1330             iwl_rx_missed_beacon_notif;
1331         /* Rx handlers */
1332         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1333         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1334         /* block ack */
1335         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1336         /* Set up hardware specific Rx handlers */
1337         priv->cfg->ops->lib->rx_handler_setup(priv);
1338 }
1339
1340 /*
1341  * this should be called while priv->lock is locked
1342 */
1343 static void __iwl_rx_replenish(struct iwl_priv *priv)
1344 {
1345         iwl_rx_allocate(priv);
1346         iwl_rx_queue_restock(priv);
1347 }
1348
1349
1350 /**
1351  * iwl_rx_handle - Main entry function for receiving responses from uCode
1352  *
1353  * Uses the priv->rx_handlers callback function array to invoke
1354  * the appropriate handlers, including command responses,
1355  * frame-received notifications, and other notifications.
1356  */
1357 void iwl_rx_handle(struct iwl_priv *priv)
1358 {
1359         struct iwl_rx_mem_buffer *rxb;
1360         struct iwl_rx_packet *pkt;
1361         struct iwl_rx_queue *rxq = &priv->rxq;
1362         u32 r, i;
1363         int reclaim;
1364         unsigned long flags;
1365         u8 fill_rx = 0;
1366         u32 count = 8;
1367
1368         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1369          * buffer that the driver may process (last buffer filled by ucode). */
1370         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1371         i = rxq->read;
1372
1373         /* Rx interrupt, but nothing sent from uCode */
1374         if (i == r)
1375                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1376
1377         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1378                 fill_rx = 1;
1379
1380         while (i != r) {
1381                 rxb = rxq->queue[i];
1382
1383                 /* If an RXB doesn't have a Rx queue slot associated with it,
1384                  * then a bug has been introduced in the queue refilling
1385                  * routines -- catch it here */
1386                 BUG_ON(rxb == NULL);
1387
1388                 rxq->queue[i] = NULL;
1389
1390                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1391                                             priv->hw_params.rx_buf_size,
1392                                             PCI_DMA_FROMDEVICE);
1393                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1394
1395                 /* Reclaim a command buffer only if this packet is a response
1396                  *   to a (driver-originated) command.
1397                  * If the packet (e.g. Rx frame) originated from uCode,
1398                  *   there is no command buffer to reclaim.
1399                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1400                  *   but apparently a few don't get set; catch them here. */
1401                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1402                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1403                         (pkt->hdr.cmd != REPLY_RX) &&
1404                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1405                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1406                         (pkt->hdr.cmd != REPLY_TX);
1407
1408                 /* Based on type of command response or notification,
1409                  *   handle those that need handling via function in
1410                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1411                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1412                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1413                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1414                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1415                 } else {
1416                         /* No handling needed */
1417                         IWL_DEBUG(IWL_DL_RX,
1418                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1419                                 r, i, get_cmd_string(pkt->hdr.cmd),
1420                                 pkt->hdr.cmd);
1421                 }
1422
1423                 if (reclaim) {
1424                         /* Invoke any callbacks, transfer the skb to caller, and
1425                          * fire off the (possibly) blocking iwl_send_cmd()
1426                          * as we reclaim the driver command queue */
1427                         if (rxb && rxb->skb)
1428                                 iwl_tx_cmd_complete(priv, rxb);
1429                         else
1430                                 IWL_WARNING("Claim null rxb?\n");
1431                 }
1432
1433                 /* For now we just don't re-use anything.  We can tweak this
1434                  * later to try and re-use notification packets and SKBs that
1435                  * fail to Rx correctly */
1436                 if (rxb->skb != NULL) {
1437                         priv->alloc_rxb_skb--;
1438                         dev_kfree_skb_any(rxb->skb);
1439                         rxb->skb = NULL;
1440                 }
1441
1442                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1443                                  priv->hw_params.rx_buf_size,
1444                                  PCI_DMA_FROMDEVICE);
1445                 spin_lock_irqsave(&rxq->lock, flags);
1446                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1447                 spin_unlock_irqrestore(&rxq->lock, flags);
1448                 i = (i + 1) & RX_QUEUE_MASK;
1449                 /* If there are a lot of unused frames,
1450                  * restock the Rx queue so ucode wont assert. */
1451                 if (fill_rx) {
1452                         count++;
1453                         if (count >= 8) {
1454                                 priv->rxq.read = i;
1455                                 __iwl_rx_replenish(priv);
1456                                 count = 0;
1457                         }
1458                 }
1459         }
1460
1461         /* Backtrack one entry */
1462         priv->rxq.read = i;
1463         iwl_rx_queue_restock(priv);
1464 }
1465
1466 #ifdef CONFIG_IWLWIFI_DEBUG
1467 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1468 {
1469         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1470         DECLARE_MAC_BUF(mac);
1471
1472         IWL_DEBUG_RADIO("RX CONFIG:\n");
1473         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1474         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1475         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1476         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1477                         le32_to_cpu(rxon->filter_flags));
1478         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1479         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1480                         rxon->ofdm_basic_rates);
1481         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1482         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1483                         print_mac(mac, rxon->node_addr));
1484         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1485                         print_mac(mac, rxon->bssid_addr));
1486         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1487 }
1488 #endif
1489
1490 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1491 {
1492         IWL_DEBUG_ISR("Enabling interrupts\n");
1493         set_bit(STATUS_INT_ENABLED, &priv->status);
1494         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1495 }
1496
1497 /* call this function to flush any scheduled tasklet */
1498 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1499 {
1500         /* wait to make sure we flush pedding tasklet*/
1501         synchronize_irq(priv->pci_dev->irq);
1502         tasklet_kill(&priv->irq_tasklet);
1503 }
1504
1505 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1506 {
1507         clear_bit(STATUS_INT_ENABLED, &priv->status);
1508
1509         /* disable interrupts from uCode/NIC to host */
1510         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1511
1512         /* acknowledge/clear/reset any interrupts still pending
1513          * from uCode or flow handler (Rx/Tx DMA) */
1514         iwl_write32(priv, CSR_INT, 0xffffffff);
1515         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1516         IWL_DEBUG_ISR("Disabled interrupts\n");
1517 }
1518
1519
1520 /**
1521  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1522  */
1523 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1524 {
1525         /* Set the FW error flag -- cleared on iwl4965_down */
1526         set_bit(STATUS_FW_ERROR, &priv->status);
1527
1528         /* Cancel currently queued command. */
1529         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1530
1531 #ifdef CONFIG_IWLWIFI_DEBUG
1532         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1533                 iwl_dump_nic_error_log(priv);
1534                 iwl_dump_nic_event_log(priv);
1535                 iwl4965_print_rx_config_cmd(priv);
1536         }
1537 #endif
1538
1539         wake_up_interruptible(&priv->wait_command_queue);
1540
1541         /* Keep the restart process from trying to send host
1542          * commands by clearing the INIT status bit */
1543         clear_bit(STATUS_READY, &priv->status);
1544
1545         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1546                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1547                           "Restarting adapter due to uCode error.\n");
1548
1549                 if (iwl_is_associated(priv)) {
1550                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1551                                sizeof(priv->recovery_rxon));
1552                         priv->error_recovering = 1;
1553                 }
1554                 if (priv->cfg->mod_params->restart_fw)
1555                         queue_work(priv->workqueue, &priv->restart);
1556         }
1557 }
1558
1559 static void iwl4965_error_recovery(struct iwl_priv *priv)
1560 {
1561         unsigned long flags;
1562
1563         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1564                sizeof(priv->staging_rxon));
1565         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1566         iwl4965_commit_rxon(priv);
1567
1568         iwl_rxon_add_station(priv, priv->bssid, 1);
1569
1570         spin_lock_irqsave(&priv->lock, flags);
1571         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1572         priv->error_recovering = 0;
1573         spin_unlock_irqrestore(&priv->lock, flags);
1574 }
1575
1576 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1577 {
1578         u32 inta, handled = 0;
1579         u32 inta_fh;
1580         unsigned long flags;
1581 #ifdef CONFIG_IWLWIFI_DEBUG
1582         u32 inta_mask;
1583 #endif
1584
1585         spin_lock_irqsave(&priv->lock, flags);
1586
1587         /* Ack/clear/reset pending uCode interrupts.
1588          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1589          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1590         inta = iwl_read32(priv, CSR_INT);
1591         iwl_write32(priv, CSR_INT, inta);
1592
1593         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1594          * Any new interrupts that happen after this, either while we're
1595          * in this tasklet, or later, will show up in next ISR/tasklet. */
1596         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1597         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1598
1599 #ifdef CONFIG_IWLWIFI_DEBUG
1600         if (priv->debug_level & IWL_DL_ISR) {
1601                 /* just for debug */
1602                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1603                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1604                               inta, inta_mask, inta_fh);
1605         }
1606 #endif
1607
1608         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1609          * atomic, make sure that inta covers all the interrupts that
1610          * we've discovered, even if FH interrupt came in just after
1611          * reading CSR_INT. */
1612         if (inta_fh & CSR49_FH_INT_RX_MASK)
1613                 inta |= CSR_INT_BIT_FH_RX;
1614         if (inta_fh & CSR49_FH_INT_TX_MASK)
1615                 inta |= CSR_INT_BIT_FH_TX;
1616
1617         /* Now service all interrupt bits discovered above. */
1618         if (inta & CSR_INT_BIT_HW_ERR) {
1619                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1620
1621                 /* Tell the device to stop sending interrupts */
1622                 iwl4965_disable_interrupts(priv);
1623
1624                 iwl4965_irq_handle_error(priv);
1625
1626                 handled |= CSR_INT_BIT_HW_ERR;
1627
1628                 spin_unlock_irqrestore(&priv->lock, flags);
1629
1630                 return;
1631         }
1632
1633 #ifdef CONFIG_IWLWIFI_DEBUG
1634         if (priv->debug_level & (IWL_DL_ISR)) {
1635                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1636                 if (inta & CSR_INT_BIT_SCD)
1637                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1638                                       "the frame/frames.\n");
1639
1640                 /* Alive notification via Rx interrupt will do the real work */
1641                 if (inta & CSR_INT_BIT_ALIVE)
1642                         IWL_DEBUG_ISR("Alive interrupt\n");
1643         }
1644 #endif
1645         /* Safely ignore these bits for debug checks below */
1646         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1647
1648         /* HW RF KILL switch toggled */
1649         if (inta & CSR_INT_BIT_RF_KILL) {
1650                 int hw_rf_kill = 0;
1651                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1652                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1653                         hw_rf_kill = 1;
1654
1655                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1656                                 hw_rf_kill ? "disable radio":"enable radio");
1657
1658                 /* driver only loads ucode once setting the interface up.
1659                  * the driver as well won't allow loading if RFKILL is set
1660                  * therefore no need to restart the driver from this handler
1661                  */
1662                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1663                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1664
1665                 handled |= CSR_INT_BIT_RF_KILL;
1666         }
1667
1668         /* Chip got too hot and stopped itself */
1669         if (inta & CSR_INT_BIT_CT_KILL) {
1670                 IWL_ERROR("Microcode CT kill error detected.\n");
1671                 handled |= CSR_INT_BIT_CT_KILL;
1672         }
1673
1674         /* Error detected by uCode */
1675         if (inta & CSR_INT_BIT_SW_ERR) {
1676                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1677                           inta);
1678                 iwl4965_irq_handle_error(priv);
1679                 handled |= CSR_INT_BIT_SW_ERR;
1680         }
1681
1682         /* uCode wakes up after power-down sleep */
1683         if (inta & CSR_INT_BIT_WAKEUP) {
1684                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1685                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1686                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1687                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1688                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1689                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1690                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1691                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1692
1693                 handled |= CSR_INT_BIT_WAKEUP;
1694         }
1695
1696         /* All uCode command responses, including Tx command responses,
1697          * Rx "responses" (frame-received notification), and other
1698          * notifications from uCode come through here*/
1699         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1700                 iwl_rx_handle(priv);
1701                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1702         }
1703
1704         if (inta & CSR_INT_BIT_FH_TX) {
1705                 IWL_DEBUG_ISR("Tx interrupt\n");
1706                 handled |= CSR_INT_BIT_FH_TX;
1707                 /* FH finished to write, send event */
1708                 priv->ucode_write_complete = 1;
1709                 wake_up_interruptible(&priv->wait_command_queue);
1710         }
1711
1712         if (inta & ~handled)
1713                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1714
1715         if (inta & ~CSR_INI_SET_MASK) {
1716                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1717                          inta & ~CSR_INI_SET_MASK);
1718                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1719         }
1720
1721         /* Re-enable all interrupts */
1722         /* only Re-enable if diabled by irq */
1723         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1724                 iwl4965_enable_interrupts(priv);
1725
1726 #ifdef CONFIG_IWLWIFI_DEBUG
1727         if (priv->debug_level & (IWL_DL_ISR)) {
1728                 inta = iwl_read32(priv, CSR_INT);
1729                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1730                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1731                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1732                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1733         }
1734 #endif
1735         spin_unlock_irqrestore(&priv->lock, flags);
1736 }
1737
1738 static irqreturn_t iwl4965_isr(int irq, void *data)
1739 {
1740         struct iwl_priv *priv = data;
1741         u32 inta, inta_mask;
1742         u32 inta_fh;
1743         if (!priv)
1744                 return IRQ_NONE;
1745
1746         spin_lock(&priv->lock);
1747
1748         /* Disable (but don't clear!) interrupts here to avoid
1749          *    back-to-back ISRs and sporadic interrupts from our NIC.
1750          * If we have something to service, the tasklet will re-enable ints.
1751          * If we *don't* have something, we'll re-enable before leaving here. */
1752         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1753         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1754
1755         /* Discover which interrupts are active/pending */
1756         inta = iwl_read32(priv, CSR_INT);
1757         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1758
1759         /* Ignore interrupt if there's nothing in NIC to service.
1760          * This may be due to IRQ shared with another device,
1761          * or due to sporadic interrupts thrown from our NIC. */
1762         if (!inta && !inta_fh) {
1763                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1764                 goto none;
1765         }
1766
1767         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1768                 /* Hardware disappeared. It might have already raised
1769                  * an interrupt */
1770                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1771                 goto unplugged;
1772         }
1773
1774         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1775                       inta, inta_mask, inta_fh);
1776
1777         inta &= ~CSR_INT_BIT_SCD;
1778
1779         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1780         if (likely(inta || inta_fh))
1781                 tasklet_schedule(&priv->irq_tasklet);
1782
1783  unplugged:
1784         spin_unlock(&priv->lock);
1785         return IRQ_HANDLED;
1786
1787  none:
1788         /* re-enable interrupts here since we don't have anything to service. */
1789         /* only Re-enable if diabled by irq */
1790         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1791                 iwl4965_enable_interrupts(priv);
1792         spin_unlock(&priv->lock);
1793         return IRQ_NONE;
1794 }
1795
1796 /******************************************************************************
1797  *
1798  * uCode download functions
1799  *
1800  ******************************************************************************/
1801
1802 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1803 {
1804         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1805         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1806         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1807         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1808         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1809         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1810 }
1811
1812 static void iwl4965_nic_start(struct iwl_priv *priv)
1813 {
1814         /* Remove all resets to allow NIC to operate */
1815         iwl_write32(priv, CSR_RESET, 0);
1816 }
1817
1818
1819 /**
1820  * iwl4965_read_ucode - Read uCode images from disk file.
1821  *
1822  * Copy into buffers for card to fetch via bus-mastering
1823  */
1824 static int iwl4965_read_ucode(struct iwl_priv *priv)
1825 {
1826         struct iwl_ucode *ucode;
1827         int ret;
1828         const struct firmware *ucode_raw;
1829         const char *name = priv->cfg->fw_name;
1830         u8 *src;
1831         size_t len;
1832         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1833
1834         /* Ask kernel firmware_class module to get the boot firmware off disk.
1835          * request_firmware() is synchronous, file is in memory on return. */
1836         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1837         if (ret < 0) {
1838                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1839                                         name, ret);
1840                 goto error;
1841         }
1842
1843         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1844                        name, ucode_raw->size);
1845
1846         /* Make sure that we got at least our header! */
1847         if (ucode_raw->size < sizeof(*ucode)) {
1848                 IWL_ERROR("File size way too small!\n");
1849                 ret = -EINVAL;
1850                 goto err_release;
1851         }
1852
1853         /* Data from ucode file:  header followed by uCode images */
1854         ucode = (void *)ucode_raw->data;
1855
1856         ver = le32_to_cpu(ucode->ver);
1857         inst_size = le32_to_cpu(ucode->inst_size);
1858         data_size = le32_to_cpu(ucode->data_size);
1859         init_size = le32_to_cpu(ucode->init_size);
1860         init_data_size = le32_to_cpu(ucode->init_data_size);
1861         boot_size = le32_to_cpu(ucode->boot_size);
1862
1863         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1864         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1865                        inst_size);
1866         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1867                        data_size);
1868         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1869                        init_size);
1870         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1871                        init_data_size);
1872         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1873                        boot_size);
1874
1875         /* Verify size of file vs. image size info in file's header */
1876         if (ucode_raw->size < sizeof(*ucode) +
1877                 inst_size + data_size + init_size +
1878                 init_data_size + boot_size) {
1879
1880                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1881                                (int)ucode_raw->size);
1882                 ret = -EINVAL;
1883                 goto err_release;
1884         }
1885
1886         /* Verify that uCode images will fit in card's SRAM */
1887         if (inst_size > priv->hw_params.max_inst_size) {
1888                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1889                                inst_size);
1890                 ret = -EINVAL;
1891                 goto err_release;
1892         }
1893
1894         if (data_size > priv->hw_params.max_data_size) {
1895                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1896                                 data_size);
1897                 ret = -EINVAL;
1898                 goto err_release;
1899         }
1900         if (init_size > priv->hw_params.max_inst_size) {
1901                 IWL_DEBUG_INFO
1902                     ("uCode init instr len %d too large to fit in\n",
1903                       init_size);
1904                 ret = -EINVAL;
1905                 goto err_release;
1906         }
1907         if (init_data_size > priv->hw_params.max_data_size) {
1908                 IWL_DEBUG_INFO
1909                     ("uCode init data len %d too large to fit in\n",
1910                       init_data_size);
1911                 ret = -EINVAL;
1912                 goto err_release;
1913         }
1914         if (boot_size > priv->hw_params.max_bsm_size) {
1915                 IWL_DEBUG_INFO
1916                     ("uCode boot instr len %d too large to fit in\n",
1917                       boot_size);
1918                 ret = -EINVAL;
1919                 goto err_release;
1920         }
1921
1922         /* Allocate ucode buffers for card's bus-master loading ... */
1923
1924         /* Runtime instructions and 2 copies of data:
1925          * 1) unmodified from disk
1926          * 2) backup cache for save/restore during power-downs */
1927         priv->ucode_code.len = inst_size;
1928         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1929
1930         priv->ucode_data.len = data_size;
1931         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1932
1933         priv->ucode_data_backup.len = data_size;
1934         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1935
1936         /* Initialization instructions and data */
1937         if (init_size && init_data_size) {
1938                 priv->ucode_init.len = init_size;
1939                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1940
1941                 priv->ucode_init_data.len = init_data_size;
1942                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1943
1944                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1945                         goto err_pci_alloc;
1946         }
1947
1948         /* Bootstrap (instructions only, no data) */
1949         if (boot_size) {
1950                 priv->ucode_boot.len = boot_size;
1951                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1952
1953                 if (!priv->ucode_boot.v_addr)
1954                         goto err_pci_alloc;
1955         }
1956
1957         /* Copy images into buffers for card's bus-master reads ... */
1958
1959         /* Runtime instructions (first block of data in file) */
1960         src = &ucode->data[0];
1961         len = priv->ucode_code.len;
1962         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1963         memcpy(priv->ucode_code.v_addr, src, len);
1964         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1965                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1966
1967         /* Runtime data (2nd block)
1968          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1969         src = &ucode->data[inst_size];
1970         len = priv->ucode_data.len;
1971         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1972         memcpy(priv->ucode_data.v_addr, src, len);
1973         memcpy(priv->ucode_data_backup.v_addr, src, len);
1974
1975         /* Initialization instructions (3rd block) */
1976         if (init_size) {
1977                 src = &ucode->data[inst_size + data_size];
1978                 len = priv->ucode_init.len;
1979                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1980                                 len);
1981                 memcpy(priv->ucode_init.v_addr, src, len);
1982         }
1983
1984         /* Initialization data (4th block) */
1985         if (init_data_size) {
1986                 src = &ucode->data[inst_size + data_size + init_size];
1987                 len = priv->ucode_init_data.len;
1988                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1989                                len);
1990                 memcpy(priv->ucode_init_data.v_addr, src, len);
1991         }
1992
1993         /* Bootstrap instructions (5th block) */
1994         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1995         len = priv->ucode_boot.len;
1996         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1997         memcpy(priv->ucode_boot.v_addr, src, len);
1998
1999         /* We have our copies now, allow OS release its copies */
2000         release_firmware(ucode_raw);
2001         return 0;
2002
2003  err_pci_alloc:
2004         IWL_ERROR("failed to allocate pci memory\n");
2005         ret = -ENOMEM;
2006         iwl4965_dealloc_ucode_pci(priv);
2007
2008  err_release:
2009         release_firmware(ucode_raw);
2010
2011  error:
2012         return ret;
2013 }
2014
2015 /**
2016  * iwl_alive_start - called after REPLY_ALIVE notification received
2017  *                   from protocol/runtime uCode (initialization uCode's
2018  *                   Alive gets handled by iwl_init_alive_start()).
2019  */
2020 static void iwl_alive_start(struct iwl_priv *priv)
2021 {
2022         int ret = 0;
2023
2024         IWL_DEBUG_INFO("Runtime Alive received.\n");
2025
2026         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2027                 /* We had an error bringing up the hardware, so take it
2028                  * all the way back down so we can try again */
2029                 IWL_DEBUG_INFO("Alive failed.\n");
2030                 goto restart;
2031         }
2032
2033         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2034          * This is a paranoid check, because we would not have gotten the
2035          * "runtime" alive if code weren't properly loaded.  */
2036         if (iwl_verify_ucode(priv)) {
2037                 /* Runtime instruction load was bad;
2038                  * take it all the way back down so we can try again */
2039                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2040                 goto restart;
2041         }
2042
2043         iwl_clear_stations_table(priv);
2044         ret = priv->cfg->ops->lib->alive_notify(priv);
2045         if (ret) {
2046                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2047                             ret);
2048                 goto restart;
2049         }
2050
2051         /* After the ALIVE response, we can send host commands to 4965 uCode */
2052         set_bit(STATUS_ALIVE, &priv->status);
2053
2054         if (iwl_is_rfkill(priv))
2055                 return;
2056
2057         ieee80211_wake_queues(priv->hw);
2058
2059         priv->active_rate = priv->rates_mask;
2060         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2061
2062         if (iwl_is_associated(priv)) {
2063                 struct iwl_rxon_cmd *active_rxon =
2064                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2065
2066                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2067                        sizeof(priv->staging_rxon));
2068                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2069         } else {
2070                 /* Initialize our rx_config data */
2071                 iwl4965_connection_init_rx_config(priv);
2072                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2073         }
2074
2075         /* Configure Bluetooth device coexistence support */
2076         iwl4965_send_bt_config(priv);
2077
2078         iwl_reset_run_time_calib(priv);
2079
2080         /* Configure the adapter for unassociated operation */
2081         iwl4965_commit_rxon(priv);
2082
2083         /* At this point, the NIC is initialized and operational */
2084         iwl_rf_kill_ct_config(priv);
2085
2086         iwl_leds_register(priv);
2087
2088         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2089         set_bit(STATUS_READY, &priv->status);
2090         wake_up_interruptible(&priv->wait_command_queue);
2091
2092         if (priv->error_recovering)
2093                 iwl4965_error_recovery(priv);
2094
2095         iwl_power_update_mode(priv, 1);
2096         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2097
2098         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2099                 iwl4965_set_mode(priv, priv->iw_mode);
2100
2101         return;
2102
2103  restart:
2104         queue_work(priv->workqueue, &priv->restart);
2105 }
2106
2107 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2108
2109 static void __iwl4965_down(struct iwl_priv *priv)
2110 {
2111         unsigned long flags;
2112         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2113
2114         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2115
2116         if (!exit_pending)
2117                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2118
2119         iwl_leds_unregister(priv);
2120
2121         iwl_clear_stations_table(priv);
2122
2123         /* Unblock any waiting calls */
2124         wake_up_interruptible_all(&priv->wait_command_queue);
2125
2126         /* Wipe out the EXIT_PENDING status bit if we are not actually
2127          * exiting the module */
2128         if (!exit_pending)
2129                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2130
2131         /* stop and reset the on-board processor */
2132         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2133
2134         /* tell the device to stop sending interrupts */
2135         spin_lock_irqsave(&priv->lock, flags);
2136         iwl4965_disable_interrupts(priv);
2137         spin_unlock_irqrestore(&priv->lock, flags);
2138         iwl_synchronize_irq(priv);
2139
2140         if (priv->mac80211_registered)
2141                 ieee80211_stop_queues(priv->hw);
2142
2143         /* If we have not previously called iwl4965_init() then
2144          * clear all bits but the RF Kill and SUSPEND bits and return */
2145         if (!iwl_is_init(priv)) {
2146                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2147                                         STATUS_RF_KILL_HW |
2148                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2149                                         STATUS_RF_KILL_SW |
2150                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2151                                         STATUS_GEO_CONFIGURED |
2152                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2153                                         STATUS_IN_SUSPEND |
2154                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2155                                         STATUS_EXIT_PENDING;
2156                 goto exit;
2157         }
2158
2159         /* ...otherwise clear out all the status bits but the RF Kill and
2160          * SUSPEND bits and continue taking the NIC down. */
2161         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2162                                 STATUS_RF_KILL_HW |
2163                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2164                                 STATUS_RF_KILL_SW |
2165                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2166                                 STATUS_GEO_CONFIGURED |
2167                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2168                                 STATUS_IN_SUSPEND |
2169                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2170                                 STATUS_FW_ERROR |
2171                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2172                                 STATUS_EXIT_PENDING;
2173
2174         spin_lock_irqsave(&priv->lock, flags);
2175         iwl_clear_bit(priv, CSR_GP_CNTRL,
2176                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2177         spin_unlock_irqrestore(&priv->lock, flags);
2178
2179         iwl_txq_ctx_stop(priv);
2180         iwl_rxq_stop(priv);
2181
2182         spin_lock_irqsave(&priv->lock, flags);
2183         if (!iwl_grab_nic_access(priv)) {
2184                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2185                                          APMG_CLK_VAL_DMA_CLK_RQT);
2186                 iwl_release_nic_access(priv);
2187         }
2188         spin_unlock_irqrestore(&priv->lock, flags);
2189
2190         udelay(5);
2191
2192         /* FIXME: apm_ops.suspend(priv) */
2193         priv->cfg->ops->lib->apm_ops.reset(priv);
2194         priv->cfg->ops->lib->free_shared_mem(priv);
2195
2196  exit:
2197         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2198
2199         if (priv->ibss_beacon)
2200                 dev_kfree_skb(priv->ibss_beacon);
2201         priv->ibss_beacon = NULL;
2202
2203         /* clear out any free frames */
2204         iwl_clear_free_frames(priv);
2205 }
2206
2207 static void iwl4965_down(struct iwl_priv *priv)
2208 {
2209         mutex_lock(&priv->mutex);
2210         __iwl4965_down(priv);
2211         mutex_unlock(&priv->mutex);
2212
2213         iwl_cancel_deferred_work(priv);
2214 }
2215
2216 #define MAX_HW_RESTARTS 5
2217
2218 static int __iwl4965_up(struct iwl_priv *priv)
2219 {
2220         int i;
2221         int ret;
2222
2223         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2224                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2225                 return -EIO;
2226         }
2227
2228         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2229                 IWL_ERROR("ucode not available for device bringup\n");
2230                 return -EIO;
2231         }
2232
2233         /* If platform's RF_KILL switch is NOT set to KILL */
2234         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2235                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2236         else
2237                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2238
2239         if (iwl_is_rfkill(priv)) {
2240                 iwl4965_enable_interrupts(priv);
2241                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2242                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2243                 return 0;
2244         }
2245
2246         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2247
2248         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2249         if (ret) {
2250                 IWL_ERROR("Unable to allocate shared memory\n");
2251                 return ret;
2252         }
2253
2254         ret = iwl_hw_nic_init(priv);
2255         if (ret) {
2256                 IWL_ERROR("Unable to init nic\n");
2257                 return ret;
2258         }
2259
2260         /* make sure rfkill handshake bits are cleared */
2261         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2262         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2263                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2264
2265         /* clear (again), then enable host interrupts */
2266         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2267         iwl4965_enable_interrupts(priv);
2268
2269         /* really make sure rfkill handshake bits are cleared */
2270         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2271         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2272
2273         /* Copy original ucode data image from disk into backup cache.
2274          * This will be used to initialize the on-board processor's
2275          * data SRAM for a clean start when the runtime program first loads. */
2276         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2277                priv->ucode_data.len);
2278
2279         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2280
2281                 iwl_clear_stations_table(priv);
2282
2283                 /* load bootstrap state machine,
2284                  * load bootstrap program into processor's memory,
2285                  * prepare to load the "initialize" uCode */
2286                 ret = priv->cfg->ops->lib->load_ucode(priv);
2287
2288                 if (ret) {
2289                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2290                         continue;
2291                 }
2292
2293                 /* Clear out the uCode error bit if it is set */
2294                 clear_bit(STATUS_FW_ERROR, &priv->status);
2295
2296                 /* start card; "initialize" will load runtime ucode */
2297                 iwl4965_nic_start(priv);
2298
2299                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2300
2301                 return 0;
2302         }
2303
2304         set_bit(STATUS_EXIT_PENDING, &priv->status);
2305         __iwl4965_down(priv);
2306         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2307
2308         /* tried to restart and config the device for as long as our
2309          * patience could withstand */
2310         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2311         return -EIO;
2312 }
2313
2314
2315 /*****************************************************************************
2316  *
2317  * Workqueue callbacks
2318  *
2319  *****************************************************************************/
2320
2321 static void iwl_bg_init_alive_start(struct work_struct *data)
2322 {
2323         struct iwl_priv *priv =
2324             container_of(data, struct iwl_priv, init_alive_start.work);
2325
2326         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2327                 return;
2328
2329         mutex_lock(&priv->mutex);
2330         priv->cfg->ops->lib->init_alive_start(priv);
2331         mutex_unlock(&priv->mutex);
2332 }
2333
2334 static void iwl_bg_alive_start(struct work_struct *data)
2335 {
2336         struct iwl_priv *priv =
2337             container_of(data, struct iwl_priv, alive_start.work);
2338
2339         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2340                 return;
2341
2342         mutex_lock(&priv->mutex);
2343         iwl_alive_start(priv);
2344         mutex_unlock(&priv->mutex);
2345 }
2346
2347 static void iwl4965_bg_rf_kill(struct work_struct *work)
2348 {
2349         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2350
2351         wake_up_interruptible(&priv->wait_command_queue);
2352
2353         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2354                 return;
2355
2356         mutex_lock(&priv->mutex);
2357
2358         if (!iwl_is_rfkill(priv)) {
2359                 IWL_DEBUG(IWL_DL_RF_KILL,
2360                           "HW and/or SW RF Kill no longer active, restarting "
2361                           "device\n");
2362                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2363                         queue_work(priv->workqueue, &priv->restart);
2364         } else {
2365                 /* make sure mac80211 stop sending Tx frame */
2366                 if (priv->mac80211_registered)
2367                         ieee80211_stop_queues(priv->hw);
2368
2369                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2370                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2371                                           "disabled by SW switch\n");
2372                 else
2373                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2374                                     "Kill switch must be turned off for "
2375                                     "wireless networking to work.\n");
2376         }
2377         mutex_unlock(&priv->mutex);
2378         iwl_rfkill_set_hw_state(priv);
2379 }
2380
2381 static void iwl4965_bg_set_monitor(struct work_struct *work)
2382 {
2383         struct iwl_priv *priv = container_of(work,
2384                                 struct iwl_priv, set_monitor);
2385         int ret;
2386
2387         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2388
2389         mutex_lock(&priv->mutex);
2390
2391         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2392
2393         if (ret) {
2394                 if (ret == -EAGAIN)
2395                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2396                 else
2397                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2398         }
2399
2400         mutex_unlock(&priv->mutex);
2401 }
2402
2403 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2404 {
2405         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2406                         run_time_calib_work);
2407
2408         mutex_lock(&priv->mutex);
2409
2410         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2411             test_bit(STATUS_SCANNING, &priv->status)) {
2412                 mutex_unlock(&priv->mutex);
2413                 return;
2414         }
2415
2416         if (priv->start_calib) {
2417                 iwl_chain_noise_calibration(priv, &priv->statistics);
2418
2419                 iwl_sensitivity_calibration(priv, &priv->statistics);
2420         }
2421
2422         mutex_unlock(&priv->mutex);
2423         return;
2424 }
2425
2426 static void iwl4965_bg_up(struct work_struct *data)
2427 {
2428         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2429
2430         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2431                 return;
2432
2433         mutex_lock(&priv->mutex);
2434         __iwl4965_up(priv);
2435         mutex_unlock(&priv->mutex);
2436         iwl_rfkill_set_hw_state(priv);
2437 }
2438
2439 static void iwl4965_bg_restart(struct work_struct *data)
2440 {
2441         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2442
2443         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2444                 return;
2445
2446         iwl4965_down(priv);
2447         queue_work(priv->workqueue, &priv->up);
2448 }
2449
2450 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2451 {
2452         struct iwl_priv *priv =
2453             container_of(data, struct iwl_priv, rx_replenish);
2454
2455         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2456                 return;
2457
2458         mutex_lock(&priv->mutex);
2459         iwl_rx_replenish(priv);
2460         mutex_unlock(&priv->mutex);
2461 }
2462
2463 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2464
2465 static void iwl4965_post_associate(struct iwl_priv *priv)
2466 {
2467         struct ieee80211_conf *conf = NULL;
2468         int ret = 0;
2469         DECLARE_MAC_BUF(mac);
2470         unsigned long flags;
2471
2472         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2473                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2474                 return;
2475         }
2476
2477         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2478                         priv->assoc_id,
2479                         print_mac(mac, priv->active_rxon.bssid_addr));
2480
2481
2482         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2483                 return;
2484
2485
2486         if (!priv->vif || !priv->is_open)
2487                 return;
2488
2489         iwl_scan_cancel_timeout(priv, 200);
2490
2491         conf = ieee80211_get_hw_conf(priv->hw);
2492
2493         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2494         iwl4965_commit_rxon(priv);
2495
2496         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2497         iwl4965_setup_rxon_timing(priv);
2498         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2499                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2500         if (ret)
2501                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2502                             "Attempting to continue.\n");
2503
2504         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2505
2506         if (priv->current_ht_config.is_ht)
2507                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2508
2509         iwl_set_rxon_chain(priv);
2510         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2511
2512         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2513                         priv->assoc_id, priv->beacon_int);
2514
2515         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2516                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2517         else
2518                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2519
2520         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2521                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2522                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2523                 else
2524                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2525
2526                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2527                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2528
2529         }
2530
2531         iwl4965_commit_rxon(priv);
2532
2533         switch (priv->iw_mode) {
2534         case IEEE80211_IF_TYPE_STA:
2535                 break;
2536
2537         case IEEE80211_IF_TYPE_IBSS:
2538
2539                 /* assume default assoc id */
2540                 priv->assoc_id = 1;
2541
2542                 iwl_rxon_add_station(priv, priv->bssid, 0);
2543                 iwl4965_send_beacon_cmd(priv);
2544
2545                 break;
2546
2547         default:
2548                 IWL_ERROR("%s Should not be called in %d mode\n",
2549                           __func__, priv->iw_mode);
2550                 break;
2551         }
2552
2553         /* Enable Rx differential gain and sensitivity calibrations */
2554         iwl_chain_noise_reset(priv);
2555         priv->start_calib = 1;
2556
2557         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2558                 priv->assoc_station_added = 1;
2559
2560         spin_lock_irqsave(&priv->lock, flags);
2561         iwl_activate_qos(priv, 0);
2562         spin_unlock_irqrestore(&priv->lock, flags);
2563
2564         iwl_power_update_mode(priv, 0);
2565         /* we have just associated, don't start scan too early */
2566         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2567 }
2568
2569 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2570
2571 static void iwl_bg_scan_completed(struct work_struct *work)
2572 {
2573         struct iwl_priv *priv =
2574             container_of(work, struct iwl_priv, scan_completed);
2575
2576         IWL_DEBUG_SCAN("SCAN complete scan\n");
2577
2578         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2579                 return;
2580
2581         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2582                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2583
2584         ieee80211_scan_completed(priv->hw);
2585
2586         /* Since setting the TXPOWER may have been deferred while
2587          * performing the scan, fire one off */
2588         mutex_lock(&priv->mutex);
2589         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2590         mutex_unlock(&priv->mutex);
2591 }
2592
2593 /*****************************************************************************
2594  *
2595  * mac80211 entry point functions
2596  *
2597  *****************************************************************************/
2598
2599 #define UCODE_READY_TIMEOUT     (4 * HZ)
2600
2601 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2602 {
2603         struct iwl_priv *priv = hw->priv;
2604         int ret;
2605
2606         IWL_DEBUG_MAC80211("enter\n");
2607
2608         if (pci_enable_device(priv->pci_dev)) {
2609                 IWL_ERROR("Fail to pci_enable_device\n");
2610                 return -ENODEV;
2611         }
2612         pci_restore_state(priv->pci_dev);
2613         pci_enable_msi(priv->pci_dev);
2614
2615         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2616                           DRV_NAME, priv);
2617         if (ret) {
2618                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2619                 goto out_disable_msi;
2620         }
2621
2622         /* we should be verifying the device is ready to be opened */
2623         mutex_lock(&priv->mutex);
2624
2625         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2626         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2627          * ucode filename and max sizes are card-specific. */
2628
2629         if (!priv->ucode_code.len) {
2630                 ret = iwl4965_read_ucode(priv);
2631                 if (ret) {
2632                         IWL_ERROR("Could not read microcode: %d\n", ret);
2633                         mutex_unlock(&priv->mutex);
2634                         goto out_release_irq;
2635                 }
2636         }
2637
2638         ret = __iwl4965_up(priv);
2639
2640         mutex_unlock(&priv->mutex);
2641
2642         iwl_rfkill_set_hw_state(priv);
2643
2644         if (ret)
2645                 goto out_release_irq;
2646
2647         if (iwl_is_rfkill(priv))
2648                 goto out;
2649
2650         IWL_DEBUG_INFO("Start UP work done.\n");
2651
2652         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2653                 return 0;
2654
2655         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2656          * mac80211 will not be run successfully. */
2657         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2658                         test_bit(STATUS_READY, &priv->status),
2659                         UCODE_READY_TIMEOUT);
2660         if (!ret) {
2661                 if (!test_bit(STATUS_READY, &priv->status)) {
2662                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2663                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2664                         ret = -ETIMEDOUT;
2665                         goto out_release_irq;
2666                 }
2667         }
2668
2669 out:
2670         priv->is_open = 1;
2671         IWL_DEBUG_MAC80211("leave\n");
2672         return 0;
2673
2674 out_release_irq:
2675         free_irq(priv->pci_dev->irq, priv);
2676 out_disable_msi:
2677         pci_disable_msi(priv->pci_dev);
2678         pci_disable_device(priv->pci_dev);
2679         priv->is_open = 0;
2680         IWL_DEBUG_MAC80211("leave - failed\n");
2681         return ret;
2682 }
2683
2684 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2685 {
2686         struct iwl_priv *priv = hw->priv;
2687
2688         IWL_DEBUG_MAC80211("enter\n");
2689
2690         if (!priv->is_open) {
2691                 IWL_DEBUG_MAC80211("leave - skip\n");
2692                 return;
2693         }
2694
2695         priv->is_open = 0;
2696
2697         if (iwl_is_ready_rf(priv)) {
2698                 /* stop mac, cancel any scan request and clear
2699                  * RXON_FILTER_ASSOC_MSK BIT
2700                  */
2701                 mutex_lock(&priv->mutex);
2702                 iwl_scan_cancel_timeout(priv, 100);
2703                 mutex_unlock(&priv->mutex);
2704         }
2705
2706         iwl4965_down(priv);
2707
2708         flush_workqueue(priv->workqueue);
2709         free_irq(priv->pci_dev->irq, priv);
2710         pci_disable_msi(priv->pci_dev);
2711         pci_save_state(priv->pci_dev);
2712         pci_disable_device(priv->pci_dev);
2713
2714         IWL_DEBUG_MAC80211("leave\n");
2715 }
2716
2717 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2718 {
2719         struct iwl_priv *priv = hw->priv;
2720
2721         IWL_DEBUG_MACDUMP("enter\n");
2722
2723         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2724                 IWL_DEBUG_MAC80211("leave - monitor\n");
2725                 dev_kfree_skb_any(skb);
2726                 return 0;
2727         }
2728
2729         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2730                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2731
2732         if (iwl_tx_skb(priv, skb))
2733                 dev_kfree_skb_any(skb);
2734
2735         IWL_DEBUG_MACDUMP("leave\n");
2736         return 0;
2737 }
2738
2739 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2740                                  struct ieee80211_if_init_conf *conf)
2741 {
2742         struct iwl_priv *priv = hw->priv;
2743         unsigned long flags;
2744         DECLARE_MAC_BUF(mac);
2745
2746         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2747
2748         if (priv->vif) {
2749                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2750                 return -EOPNOTSUPP;
2751         }
2752
2753         spin_lock_irqsave(&priv->lock, flags);
2754         priv->vif = conf->vif;
2755
2756         spin_unlock_irqrestore(&priv->lock, flags);
2757
2758         mutex_lock(&priv->mutex);
2759
2760         if (conf->mac_addr) {
2761                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2762                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2763         }
2764
2765         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2766                 /* we are not ready, will run again when ready */
2767                 set_bit(STATUS_MODE_PENDING, &priv->status);
2768
2769         mutex_unlock(&priv->mutex);
2770
2771         IWL_DEBUG_MAC80211("leave\n");
2772         return 0;
2773 }
2774
2775 /**
2776  * iwl4965_mac_config - mac80211 config callback
2777  *
2778  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2779  * be set inappropriately and the driver currently sets the hardware up to
2780  * use it whenever needed.
2781  */
2782 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2783 {
2784         struct iwl_priv *priv = hw->priv;
2785         const struct iwl_channel_info *ch_info;
2786         unsigned long flags;
2787         int ret = 0;
2788         u16 channel;
2789
2790         mutex_lock(&priv->mutex);
2791         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2792
2793         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2794
2795         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2796                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2797                 goto out;
2798         }
2799
2800         if (!conf->radio_enabled)
2801                 iwl_radio_kill_sw_disable_radio(priv);
2802
2803         if (!iwl_is_ready(priv)) {
2804                 IWL_DEBUG_MAC80211("leave - not ready\n");
2805                 ret = -EIO;
2806                 goto out;
2807         }
2808
2809         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2810                      test_bit(STATUS_SCANNING, &priv->status))) {
2811                 IWL_DEBUG_MAC80211("leave - scanning\n");
2812                 set_bit(STATUS_CONF_PENDING, &priv->status);
2813                 mutex_unlock(&priv->mutex);
2814                 return 0;
2815         }
2816
2817         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2818         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2819         if (!is_channel_valid(ch_info)) {
2820                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2821                 ret = -EINVAL;
2822                 goto out;
2823         }
2824
2825         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2826             !is_channel_ibss(ch_info)) {
2827                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2828                         conf->channel->hw_value, conf->channel->band);
2829                 ret = -EINVAL;
2830                 goto out;
2831         }
2832
2833         spin_lock_irqsave(&priv->lock, flags);
2834
2835
2836         /* if we are switching from ht to 2.4 clear flags
2837          * from any ht related info since 2.4 does not
2838          * support ht */
2839         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2840 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2841             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2842 #endif
2843         )
2844                 priv->staging_rxon.flags = 0;
2845
2846         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2847
2848         iwl_set_flags_for_band(priv, conf->channel->band);
2849
2850         /* The list of supported rates and rate mask can be different
2851          * for each band; since the band may have changed, reset
2852          * the rate mask to what mac80211 lists */
2853         iwl4965_set_rate(priv);
2854
2855         spin_unlock_irqrestore(&priv->lock, flags);
2856
2857 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2858         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2859                 iwl4965_hw_channel_switch(priv, conf->channel);
2860                 goto out;
2861         }
2862 #endif
2863
2864         if (!conf->radio_enabled) {
2865                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2866                 goto out;
2867         }
2868
2869         if (iwl_is_rfkill(priv)) {
2870                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2871                 ret = -EIO;
2872                 goto out;
2873         }
2874
2875         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2876                            priv->tx_power_user_lmt, conf->power_level);
2877
2878         iwl_set_tx_power(priv, conf->power_level, false);
2879
2880         iwl4965_set_rate(priv);
2881
2882         if (memcmp(&priv->active_rxon,
2883                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2884                 iwl4965_commit_rxon(priv);
2885         else
2886                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2887
2888         IWL_DEBUG_MAC80211("leave\n");
2889
2890 out:
2891         clear_bit(STATUS_CONF_PENDING, &priv->status);
2892         mutex_unlock(&priv->mutex);
2893         return ret;
2894 }
2895
2896 static void iwl4965_config_ap(struct iwl_priv *priv)
2897 {
2898         int ret = 0;
2899         unsigned long flags;
2900
2901         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2902                 return;
2903
2904         /* The following should be done only at AP bring up */
2905         if (!(iwl_is_associated(priv))) {
2906
2907                 /* RXON - unassoc (to set timing command) */
2908                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2909                 iwl4965_commit_rxon(priv);
2910
2911                 /* RXON Timing */
2912                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2913                 iwl4965_setup_rxon_timing(priv);
2914                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2915                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2916                 if (ret)
2917                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2918                                         "Attempting to continue.\n");
2919
2920                 iwl_set_rxon_chain(priv);
2921
2922                 /* FIXME: what should be the assoc_id for AP? */
2923                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2924                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2925                         priv->staging_rxon.flags |=
2926                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2927                 else
2928                         priv->staging_rxon.flags &=
2929                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2930
2931                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2932                         if (priv->assoc_capability &
2933                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2934                                 priv->staging_rxon.flags |=
2935                                         RXON_FLG_SHORT_SLOT_MSK;
2936                         else
2937                                 priv->staging_rxon.flags &=
2938                                         ~RXON_FLG_SHORT_SLOT_MSK;
2939
2940                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2941                                 priv->staging_rxon.flags &=
2942                                         ~RXON_FLG_SHORT_SLOT_MSK;
2943                 }
2944                 /* restore RXON assoc */
2945                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2946                 iwl4965_commit_rxon(priv);
2947                 spin_lock_irqsave(&priv->lock, flags);
2948                 iwl_activate_qos(priv, 1);
2949                 spin_unlock_irqrestore(&priv->lock, flags);
2950                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2951         }
2952         iwl4965_send_beacon_cmd(priv);
2953
2954         /* FIXME - we need to add code here to detect a totally new
2955          * configuration, reset the AP, unassoc, rxon timing, assoc,
2956          * clear sta table, add BCAST sta... */
2957 }
2958
2959 /* temporary */
2960 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2961
2962 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2963                                         struct ieee80211_vif *vif,
2964                                     struct ieee80211_if_conf *conf)
2965 {
2966         struct iwl_priv *priv = hw->priv;
2967         DECLARE_MAC_BUF(mac);
2968         unsigned long flags;
2969         int rc;
2970
2971         if (conf == NULL)
2972                 return -EIO;
2973
2974         if (priv->vif != vif) {
2975                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2976                 return 0;
2977         }
2978
2979         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2980             conf->changed & IEEE80211_IFCC_BEACON) {
2981                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2982                 if (!beacon)
2983                         return -ENOMEM;
2984                 rc = iwl4965_mac_beacon_update(hw, beacon);
2985                 if (rc)
2986                         return rc;
2987         }
2988
2989         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2990             (!conf->ssid_len)) {
2991                 IWL_DEBUG_MAC80211
2992                     ("Leaving in AP mode because HostAPD is not ready.\n");
2993                 return 0;
2994         }
2995
2996         if (!iwl_is_alive(priv))
2997                 return -EAGAIN;
2998
2999         mutex_lock(&priv->mutex);
3000
3001         if (conf->bssid)
3002                 IWL_DEBUG_MAC80211("bssid: %s\n",
3003                                    print_mac(mac, conf->bssid));
3004
3005 /*
3006  * very dubious code was here; the probe filtering flag is never set:
3007  *
3008         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3009             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3010  */
3011
3012         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3013                 if (!conf->bssid) {
3014                         conf->bssid = priv->mac_addr;
3015                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3016                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3017                                            print_mac(mac, conf->bssid));
3018                 }
3019                 if (priv->ibss_beacon)
3020                         dev_kfree_skb(priv->ibss_beacon);
3021
3022                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3023         }
3024
3025         if (iwl_is_rfkill(priv))
3026                 goto done;
3027
3028         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3029             !is_multicast_ether_addr(conf->bssid)) {
3030                 /* If there is currently a HW scan going on in the background
3031                  * then we need to cancel it else the RXON below will fail. */
3032                 if (iwl_scan_cancel_timeout(priv, 100)) {
3033                         IWL_WARNING("Aborted scan still in progress "
3034                                     "after 100ms\n");
3035                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3036                         mutex_unlock(&priv->mutex);
3037                         return -EAGAIN;
3038                 }
3039                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3040
3041                 /* TODO: Audit driver for usage of these members and see
3042                  * if mac80211 deprecates them (priv->bssid looks like it
3043                  * shouldn't be there, but I haven't scanned the IBSS code
3044                  * to verify) - jpk */
3045                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3046
3047                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3048                         iwl4965_config_ap(priv);
3049                 else {
3050                         rc = iwl4965_commit_rxon(priv);
3051                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3052                                 iwl_rxon_add_station(
3053                                         priv, priv->active_rxon.bssid_addr, 1);
3054                 }
3055
3056         } else {
3057                 iwl_scan_cancel_timeout(priv, 100);
3058                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3059                 iwl4965_commit_rxon(priv);
3060         }
3061
3062  done:
3063         spin_lock_irqsave(&priv->lock, flags);
3064         if (!conf->ssid_len)
3065                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3066         else
3067                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3068
3069         priv->essid_len = conf->ssid_len;
3070         spin_unlock_irqrestore(&priv->lock, flags);
3071
3072         IWL_DEBUG_MAC80211("leave\n");
3073         mutex_unlock(&priv->mutex);
3074
3075         return 0;
3076 }
3077
3078 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3079                                  unsigned int changed_flags,
3080                                  unsigned int *total_flags,
3081                                  int mc_count, struct dev_addr_list *mc_list)
3082 {
3083         struct iwl_priv *priv = hw->priv;
3084
3085         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3086                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3087                                    IEEE80211_IF_TYPE_MNTR,
3088                                    changed_flags, *total_flags);
3089                 /* queue work 'cuz mac80211 is holding a lock which
3090                  * prevents us from issuing (synchronous) f/w cmds */
3091                 queue_work(priv->workqueue, &priv->set_monitor);
3092         }
3093         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3094                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3095 }
3096
3097 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3098                                      struct ieee80211_if_init_conf *conf)
3099 {
3100         struct iwl_priv *priv = hw->priv;
3101
3102         IWL_DEBUG_MAC80211("enter\n");
3103
3104         mutex_lock(&priv->mutex);
3105
3106         if (iwl_is_ready_rf(priv)) {
3107                 iwl_scan_cancel_timeout(priv, 100);
3108                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3109                 iwl4965_commit_rxon(priv);
3110         }
3111         if (priv->vif == conf->vif) {
3112                 priv->vif = NULL;
3113                 memset(priv->bssid, 0, ETH_ALEN);
3114                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3115                 priv->essid_len = 0;
3116         }
3117         mutex_unlock(&priv->mutex);
3118
3119         IWL_DEBUG_MAC80211("leave\n");
3120
3121 }
3122
3123 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3124 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3125                                      struct ieee80211_vif *vif,
3126                                      struct ieee80211_bss_conf *bss_conf,
3127                                      u32 changes)
3128 {
3129         struct iwl_priv *priv = hw->priv;
3130
3131         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3132
3133         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3134                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3135                                    bss_conf->use_short_preamble);
3136                 if (bss_conf->use_short_preamble)
3137                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3138                 else
3139                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3140         }
3141
3142         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3143                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3144                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3145                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3146                 else
3147                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3148         }
3149
3150         if (changes & BSS_CHANGED_HT) {
3151                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3152                 iwl4965_ht_conf(priv, bss_conf);
3153                 iwl_set_rxon_chain(priv);
3154         }
3155
3156         if (changes & BSS_CHANGED_ASSOC) {
3157                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3158                 /* This should never happen as this function should
3159                  * never be called from interrupt context. */
3160                 if (WARN_ON_ONCE(in_interrupt()))
3161                         return;
3162                 if (bss_conf->assoc) {
3163                         priv->assoc_id = bss_conf->aid;
3164                         priv->beacon_int = bss_conf->beacon_int;
3165                         priv->power_data.dtim_period = bss_conf->dtim_period;
3166                         priv->timestamp = bss_conf->timestamp;
3167                         priv->assoc_capability = bss_conf->assoc_capability;
3168                         priv->next_scan_jiffies = jiffies +
3169                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3170                         mutex_lock(&priv->mutex);
3171                         iwl4965_post_associate(priv);
3172                         mutex_unlock(&priv->mutex);
3173                 } else {
3174                         priv->assoc_id = 0;
3175                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3176                 }
3177         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3178                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3179                         iwl_send_rxon_assoc(priv);
3180         }
3181
3182 }
3183
3184 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3185 {
3186         int rc = 0;
3187         unsigned long flags;
3188         struct iwl_priv *priv = hw->priv;
3189
3190         IWL_DEBUG_MAC80211("enter\n");
3191
3192         mutex_lock(&priv->mutex);
3193         spin_lock_irqsave(&priv->lock, flags);
3194
3195         if (!iwl_is_ready_rf(priv)) {
3196                 rc = -EIO;
3197                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3198                 goto out_unlock;
3199         }
3200
3201         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3202                 rc = -EIO;
3203                 IWL_ERROR("ERROR: APs don't scan\n");
3204                 goto out_unlock;
3205         }
3206
3207         /* we don't schedule scan within next_scan_jiffies period */
3208         if (priv->next_scan_jiffies &&
3209                         time_after(priv->next_scan_jiffies, jiffies)) {
3210                 rc = -EAGAIN;
3211                 goto out_unlock;
3212         }
3213         /* if we just finished scan ask for delay */
3214         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3215                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3216                 rc = -EAGAIN;
3217                 goto out_unlock;
3218         }
3219         if (len) {
3220                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3221                                iwl_escape_essid(ssid, len), (int)len);
3222
3223                 priv->one_direct_scan = 1;
3224                 priv->direct_ssid_len = (u8)
3225                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3226                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3227         } else
3228                 priv->one_direct_scan = 0;
3229
3230         rc = iwl_scan_initiate(priv);
3231
3232         IWL_DEBUG_MAC80211("leave\n");
3233
3234 out_unlock:
3235         spin_unlock_irqrestore(&priv->lock, flags);
3236         mutex_unlock(&priv->mutex);
3237
3238         return rc;
3239 }
3240
3241 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3242                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3243                         u32 iv32, u16 *phase1key)
3244 {
3245         struct iwl_priv *priv = hw->priv;
3246         u8 sta_id = IWL_INVALID_STATION;
3247         unsigned long flags;
3248         __le16 key_flags = 0;
3249         int i;
3250         DECLARE_MAC_BUF(mac);
3251
3252         IWL_DEBUG_MAC80211("enter\n");
3253
3254         sta_id = iwl_find_station(priv, addr);
3255         if (sta_id == IWL_INVALID_STATION) {
3256                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3257                                    print_mac(mac, addr));
3258                 return;
3259         }
3260
3261         iwl_scan_cancel_timeout(priv, 100);
3262
3263         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3264         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3265         key_flags &= ~STA_KEY_FLG_INVALID;
3266
3267         if (sta_id == priv->hw_params.bcast_sta_id)
3268                 key_flags |= STA_KEY_MULTICAST_MSK;
3269
3270         spin_lock_irqsave(&priv->sta_lock, flags);
3271
3272         priv->stations[sta_id].sta.key.key_flags = key_flags;
3273         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3274
3275         for (i = 0; i < 5; i++)
3276                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3277                         cpu_to_le16(phase1key[i]);
3278
3279         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3280         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3281
3282         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3283
3284         spin_unlock_irqrestore(&priv->sta_lock, flags);
3285
3286         IWL_DEBUG_MAC80211("leave\n");
3287 }
3288
3289 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3290                            const u8 *local_addr, const u8 *addr,
3291                            struct ieee80211_key_conf *key)
3292 {
3293         struct iwl_priv *priv = hw->priv;
3294         DECLARE_MAC_BUF(mac);
3295         int ret = 0;
3296         u8 sta_id = IWL_INVALID_STATION;
3297         u8 is_default_wep_key = 0;
3298
3299         IWL_DEBUG_MAC80211("enter\n");
3300
3301         if (priv->hw_params.sw_crypto) {
3302                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3303                 return -EOPNOTSUPP;
3304         }
3305
3306         if (is_zero_ether_addr(addr))
3307                 /* only support pairwise keys */
3308                 return -EOPNOTSUPP;
3309
3310         sta_id = iwl_find_station(priv, addr);
3311         if (sta_id == IWL_INVALID_STATION) {
3312                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3313                                    print_mac(mac, addr));
3314                 return -EINVAL;
3315
3316         }
3317
3318         mutex_lock(&priv->mutex);
3319         iwl_scan_cancel_timeout(priv, 100);
3320         mutex_unlock(&priv->mutex);
3321
3322         /* If we are getting WEP group key and we didn't receive any key mapping
3323          * so far, we are in legacy wep mode (group key only), otherwise we are
3324          * in 1X mode.
3325          * In legacy wep mode, we use another host command to the uCode */
3326         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3327                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3328                 if (cmd == SET_KEY)
3329                         is_default_wep_key = !priv->key_mapping_key;
3330                 else
3331                         is_default_wep_key =
3332                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3333         }
3334
3335         switch (cmd) {
3336         case SET_KEY:
3337                 if (is_default_wep_key)
3338                         ret = iwl_set_default_wep_key(priv, key);
3339                 else
3340                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3341
3342                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3343                 break;
3344         case DISABLE_KEY:
3345                 if (is_default_wep_key)
3346                         ret = iwl_remove_default_wep_key(priv, key);
3347                 else
3348                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3349
3350                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3351                 break;
3352         default:
3353                 ret = -EINVAL;
3354         }
3355
3356         IWL_DEBUG_MAC80211("leave\n");
3357
3358         return ret;
3359 }
3360
3361 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3362                            const struct ieee80211_tx_queue_params *params)
3363 {
3364         struct iwl_priv *priv = hw->priv;
3365         unsigned long flags;
3366         int q;
3367
3368         IWL_DEBUG_MAC80211("enter\n");
3369
3370         if (!iwl_is_ready_rf(priv)) {
3371                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3372                 return -EIO;
3373         }
3374
3375         if (queue >= AC_NUM) {
3376                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3377                 return 0;
3378         }
3379
3380         if (!priv->qos_data.qos_enable) {
3381                 priv->qos_data.qos_active = 0;
3382                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3383                 return 0;
3384         }
3385         q = AC_NUM - 1 - queue;
3386
3387         spin_lock_irqsave(&priv->lock, flags);
3388
3389         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3390         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3391         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3392         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3393                         cpu_to_le16((params->txop * 32));
3394
3395         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3396         priv->qos_data.qos_active = 1;
3397
3398         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3399                 iwl_activate_qos(priv, 1);
3400         else if (priv->assoc_id && iwl_is_associated(priv))
3401                 iwl_activate_qos(priv, 0);
3402
3403         spin_unlock_irqrestore(&priv->lock, flags);
3404
3405         IWL_DEBUG_MAC80211("leave\n");
3406         return 0;
3407 }
3408
3409 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3410                              enum ieee80211_ampdu_mlme_action action,
3411                              const u8 *addr, u16 tid, u16 *ssn)
3412 {
3413         struct iwl_priv *priv = hw->priv;
3414         DECLARE_MAC_BUF(mac);
3415
3416         IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3417                      print_mac(mac, addr), tid);
3418
3419         if (!(priv->cfg->sku & IWL_SKU_N))
3420                 return -EACCES;
3421
3422         switch (action) {
3423         case IEEE80211_AMPDU_RX_START:
3424                 IWL_DEBUG_HT("start Rx\n");
3425                 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3426         case IEEE80211_AMPDU_RX_STOP:
3427                 IWL_DEBUG_HT("stop Rx\n");
3428                 return iwl_rx_agg_stop(priv, addr, tid);
3429         case IEEE80211_AMPDU_TX_START:
3430                 IWL_DEBUG_HT("start Tx\n");
3431                 return iwl_tx_agg_start(priv, addr, tid, ssn);
3432         case IEEE80211_AMPDU_TX_STOP:
3433                 IWL_DEBUG_HT("stop Tx\n");
3434                 return iwl_tx_agg_stop(priv, addr, tid);
3435         default:
3436                 IWL_DEBUG_HT("unknown\n");
3437                 return -EINVAL;
3438                 break;
3439         }
3440         return 0;
3441 }
3442 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3443                                 struct ieee80211_tx_queue_stats *stats)
3444 {
3445         struct iwl_priv *priv = hw->priv;
3446         int i, avail;
3447         struct iwl_tx_queue *txq;
3448         struct iwl_queue *q;
3449         unsigned long flags;
3450
3451         IWL_DEBUG_MAC80211("enter\n");
3452
3453         if (!iwl_is_ready_rf(priv)) {
3454                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3455                 return -EIO;
3456         }
3457
3458         spin_lock_irqsave(&priv->lock, flags);
3459
3460         for (i = 0; i < AC_NUM; i++) {
3461                 txq = &priv->txq[i];
3462                 q = &txq->q;
3463                 avail = iwl_queue_space(q);
3464
3465                 stats[i].len = q->n_window - avail;
3466                 stats[i].limit = q->n_window - q->high_mark;
3467                 stats[i].count = q->n_window;
3468
3469         }
3470         spin_unlock_irqrestore(&priv->lock, flags);
3471
3472         IWL_DEBUG_MAC80211("leave\n");
3473
3474         return 0;
3475 }
3476
3477 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3478                              struct ieee80211_low_level_stats *stats)
3479 {
3480         struct iwl_priv *priv = hw->priv;
3481
3482         priv = hw->priv;
3483         IWL_DEBUG_MAC80211("enter\n");
3484         IWL_DEBUG_MAC80211("leave\n");
3485
3486         return 0;
3487 }
3488
3489 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3490 {
3491         struct iwl_priv *priv = hw->priv;
3492         unsigned long flags;
3493
3494         mutex_lock(&priv->mutex);
3495         IWL_DEBUG_MAC80211("enter\n");
3496
3497         spin_lock_irqsave(&priv->lock, flags);
3498         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3499         spin_unlock_irqrestore(&priv->lock, flags);
3500
3501         iwl_reset_qos(priv);
3502
3503         spin_lock_irqsave(&priv->lock, flags);
3504         priv->assoc_id = 0;
3505         priv->assoc_capability = 0;
3506         priv->assoc_station_added = 0;
3507
3508         /* new association get rid of ibss beacon skb */
3509         if (priv->ibss_beacon)
3510                 dev_kfree_skb(priv->ibss_beacon);
3511
3512         priv->ibss_beacon = NULL;
3513
3514         priv->beacon_int = priv->hw->conf.beacon_int;
3515         priv->timestamp = 0;
3516         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3517                 priv->beacon_int = 0;
3518
3519         spin_unlock_irqrestore(&priv->lock, flags);
3520
3521         if (!iwl_is_ready_rf(priv)) {
3522                 IWL_DEBUG_MAC80211("leave - not ready\n");
3523                 mutex_unlock(&priv->mutex);
3524                 return;
3525         }
3526
3527         /* we are restarting association process
3528          * clear RXON_FILTER_ASSOC_MSK bit
3529          */
3530         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3531                 iwl_scan_cancel_timeout(priv, 100);
3532                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3533                 iwl4965_commit_rxon(priv);
3534         }
3535
3536         iwl_power_update_mode(priv, 0);
3537
3538         /* Per mac80211.h: This is only used in IBSS mode... */
3539         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3540
3541                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3542                 mutex_unlock(&priv->mutex);
3543                 return;
3544         }
3545
3546         iwl4965_set_rate(priv);
3547
3548         mutex_unlock(&priv->mutex);
3549
3550         IWL_DEBUG_MAC80211("leave\n");
3551 }
3552
3553 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3554 {
3555         struct iwl_priv *priv = hw->priv;
3556         unsigned long flags;
3557         __le64 timestamp;
3558
3559         mutex_lock(&priv->mutex);
3560         IWL_DEBUG_MAC80211("enter\n");
3561
3562         if (!iwl_is_ready_rf(priv)) {
3563                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3564                 mutex_unlock(&priv->mutex);
3565                 return -EIO;
3566         }
3567
3568         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3569                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3570                 mutex_unlock(&priv->mutex);
3571                 return -EIO;
3572         }
3573
3574         spin_lock_irqsave(&priv->lock, flags);
3575
3576         if (priv->ibss_beacon)
3577                 dev_kfree_skb(priv->ibss_beacon);
3578
3579         priv->ibss_beacon = skb;
3580
3581         priv->assoc_id = 0;
3582         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3583         priv->timestamp = le64_to_cpu(timestamp) +  (priv->beacon_int * 1000);
3584
3585         IWL_DEBUG_MAC80211("leave\n");
3586         spin_unlock_irqrestore(&priv->lock, flags);
3587
3588         iwl_reset_qos(priv);
3589
3590         iwl4965_post_associate(priv);
3591
3592         mutex_unlock(&priv->mutex);
3593
3594         return 0;
3595 }
3596
3597 /*****************************************************************************
3598  *
3599  * sysfs attributes
3600  *
3601  *****************************************************************************/
3602
3603 #ifdef CONFIG_IWLWIFI_DEBUG
3604
3605 /*
3606  * The following adds a new attribute to the sysfs representation
3607  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3608  * used for controlling the debug level.
3609  *
3610  * See the level definitions in iwl for details.
3611  */
3612
3613 static ssize_t show_debug_level(struct device *d,
3614                                 struct device_attribute *attr, char *buf)
3615 {
3616         struct iwl_priv *priv = d->driver_data;
3617
3618         return sprintf(buf, "0x%08X\n", priv->debug_level);
3619 }
3620 static ssize_t store_debug_level(struct device *d,
3621                                 struct device_attribute *attr,
3622                                  const char *buf, size_t count)
3623 {
3624         struct iwl_priv *priv = d->driver_data;
3625         char *p = (char *)buf;
3626         u32 val;
3627
3628         val = simple_strtoul(p, &p, 0);
3629         if (p == buf)
3630                 printk(KERN_INFO DRV_NAME
3631                        ": %s is not in hex or decimal form.\n", buf);
3632         else
3633                 priv->debug_level = val;
3634
3635         return strnlen(buf, count);
3636 }
3637
3638 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3639                         show_debug_level, store_debug_level);
3640
3641
3642 #endif /* CONFIG_IWLWIFI_DEBUG */
3643
3644
3645 static ssize_t show_version(struct device *d,
3646                                 struct device_attribute *attr, char *buf)
3647 {
3648         struct iwl_priv *priv = d->driver_data;
3649         struct iwl_alive_resp *palive = &priv->card_alive;
3650         ssize_t pos = 0;
3651         u16 eeprom_ver;
3652
3653         if (palive->is_valid)
3654                 pos += sprintf(buf + pos,
3655                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3656                                 "fw type: 0x%01X 0x%01X\n",
3657                                 palive->ucode_major, palive->ucode_minor,
3658                                 palive->sw_rev[0], palive->sw_rev[1],
3659                                 palive->ver_type, palive->ver_subtype);
3660         else
3661                 pos += sprintf(buf + pos, "fw not loaded\n");
3662
3663         if (priv->eeprom) {
3664                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3665                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3666                                  eeprom_ver);
3667         } else {
3668                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3669         }
3670
3671         return pos;
3672 }
3673
3674 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3675
3676 static ssize_t show_temperature(struct device *d,
3677                                 struct device_attribute *attr, char *buf)
3678 {
3679         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3680
3681         if (!iwl_is_alive(priv))
3682                 return -EAGAIN;
3683
3684         return sprintf(buf, "%d\n", priv->temperature);
3685 }
3686
3687 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3688
3689 static ssize_t show_tx_power(struct device *d,
3690                              struct device_attribute *attr, char *buf)
3691 {
3692         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3693         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3694 }
3695
3696 static ssize_t store_tx_power(struct device *d,
3697                               struct device_attribute *attr,
3698                               const char *buf, size_t count)
3699 {
3700         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3701         char *p = (char *)buf;
3702         u32 val;
3703
3704         val = simple_strtoul(p, &p, 10);
3705         if (p == buf)
3706                 printk(KERN_INFO DRV_NAME
3707                        ": %s is not in decimal form.\n", buf);
3708         else
3709                 iwl_set_tx_power(priv, val, false);
3710
3711         return count;
3712 }
3713
3714 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3715
3716 static ssize_t show_flags(struct device *d,
3717                           struct device_attribute *attr, char *buf)
3718 {
3719         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3720
3721         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3722 }
3723
3724 static ssize_t store_flags(struct device *d,
3725                            struct device_attribute *attr,
3726                            const char *buf, size_t count)
3727 {
3728         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3729         u32 flags = simple_strtoul(buf, NULL, 0);
3730
3731         mutex_lock(&priv->mutex);
3732         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3733                 /* Cancel any currently running scans... */
3734                 if (iwl_scan_cancel_timeout(priv, 100))
3735                         IWL_WARNING("Could not cancel scan.\n");
3736                 else {
3737                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3738                                        flags);
3739                         priv->staging_rxon.flags = cpu_to_le32(flags);
3740                         iwl4965_commit_rxon(priv);
3741                 }
3742         }
3743         mutex_unlock(&priv->mutex);
3744
3745         return count;
3746 }
3747
3748 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3749
3750 static ssize_t show_filter_flags(struct device *d,
3751                                  struct device_attribute *attr, char *buf)
3752 {
3753         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3754
3755         return sprintf(buf, "0x%04X\n",
3756                 le32_to_cpu(priv->active_rxon.filter_flags));
3757 }
3758
3759 static ssize_t store_filter_flags(struct device *d,
3760                                   struct device_attribute *attr,
3761                                   const char *buf, size_t count)
3762 {
3763         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3764         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3765
3766         mutex_lock(&priv->mutex);
3767         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3768                 /* Cancel any currently running scans... */
3769                 if (iwl_scan_cancel_timeout(priv, 100))
3770                         IWL_WARNING("Could not cancel scan.\n");
3771                 else {
3772                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3773                                        "0x%04X\n", filter_flags);
3774                         priv->staging_rxon.filter_flags =
3775                                 cpu_to_le32(filter_flags);
3776                         iwl4965_commit_rxon(priv);
3777                 }
3778         }
3779         mutex_unlock(&priv->mutex);
3780
3781         return count;
3782 }
3783
3784 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3785                    store_filter_flags);
3786
3787 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3788
3789 static ssize_t show_measurement(struct device *d,
3790                                 struct device_attribute *attr, char *buf)
3791 {
3792         struct iwl_priv *priv = dev_get_drvdata(d);
3793         struct iwl4965_spectrum_notification measure_report;
3794         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3795         u8 *data = (u8 *)&measure_report;
3796         unsigned long flags;
3797
3798         spin_lock_irqsave(&priv->lock, flags);
3799         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3800                 spin_unlock_irqrestore(&priv->lock, flags);
3801                 return 0;
3802         }
3803         memcpy(&measure_report, &priv->measure_report, size);
3804         priv->measurement_status = 0;
3805         spin_unlock_irqrestore(&priv->lock, flags);
3806
3807         while (size && (PAGE_SIZE - len)) {
3808                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3809                                    PAGE_SIZE - len, 1);
3810                 len = strlen(buf);
3811                 if (PAGE_SIZE - len)
3812                         buf[len++] = '\n';
3813
3814                 ofs += 16;
3815                 size -= min(size, 16U);
3816         }
3817
3818         return len;
3819 }
3820
3821 static ssize_t store_measurement(struct device *d,
3822                                  struct device_attribute *attr,
3823                                  const char *buf, size_t count)
3824 {
3825         struct iwl_priv *priv = dev_get_drvdata(d);
3826         struct ieee80211_measurement_params params = {
3827                 .channel = le16_to_cpu(priv->active_rxon.channel),
3828                 .start_time = cpu_to_le64(priv->last_tsf),
3829                 .duration = cpu_to_le16(1),
3830         };
3831         u8 type = IWL_MEASURE_BASIC;
3832         u8 buffer[32];
3833         u8 channel;
3834
3835         if (count) {
3836                 char *p = buffer;
3837                 strncpy(buffer, buf, min(sizeof(buffer), count));
3838                 channel = simple_strtoul(p, NULL, 0);
3839                 if (channel)
3840                         params.channel = channel;
3841
3842                 p = buffer;
3843                 while (*p && *p != ' ')
3844                         p++;
3845                 if (*p)
3846                         type = simple_strtoul(p + 1, NULL, 0);
3847         }
3848
3849         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3850                        "channel %d (for '%s')\n", type, params.channel, buf);
3851         iwl4965_get_measurement(priv, &params, type);
3852
3853         return count;
3854 }
3855
3856 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3857                    show_measurement, store_measurement);
3858 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3859
3860 static ssize_t store_retry_rate(struct device *d,
3861                                 struct device_attribute *attr,
3862                                 const char *buf, size_t count)
3863 {
3864         struct iwl_priv *priv = dev_get_drvdata(d);
3865
3866         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3867         if (priv->retry_rate <= 0)
3868                 priv->retry_rate = 1;
3869
3870         return count;
3871 }
3872
3873 static ssize_t show_retry_rate(struct device *d,
3874                                struct device_attribute *attr, char *buf)
3875 {
3876         struct iwl_priv *priv = dev_get_drvdata(d);
3877         return sprintf(buf, "%d", priv->retry_rate);
3878 }
3879
3880 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3881                    store_retry_rate);
3882
3883 static ssize_t store_power_level(struct device *d,
3884                                  struct device_attribute *attr,
3885                                  const char *buf, size_t count)
3886 {
3887         struct iwl_priv *priv = dev_get_drvdata(d);
3888         int ret;
3889         int mode;
3890
3891         mode = simple_strtoul(buf, NULL, 0);
3892         mutex_lock(&priv->mutex);
3893
3894         if (!iwl_is_ready(priv)) {
3895                 ret = -EAGAIN;
3896                 goto out;
3897         }
3898
3899         ret = iwl_power_set_user_mode(priv, mode);
3900         if (ret) {
3901                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3902                 goto out;
3903         }
3904         ret = count;
3905
3906  out:
3907         mutex_unlock(&priv->mutex);
3908         return ret;
3909 }
3910
3911 static ssize_t show_power_level(struct device *d,
3912                                 struct device_attribute *attr, char *buf)
3913 {
3914         struct iwl_priv *priv = dev_get_drvdata(d);
3915         int mode = priv->power_data.user_power_setting;
3916         int system = priv->power_data.system_power_setting;
3917         int level = priv->power_data.power_mode;
3918         char *p = buf;
3919
3920         switch (system) {
3921         case IWL_POWER_SYS_AUTO:
3922                 p += sprintf(p, "SYSTEM:auto");
3923                 break;
3924         case IWL_POWER_SYS_AC:
3925                 p += sprintf(p, "SYSTEM:ac");
3926                 break;
3927         case IWL_POWER_SYS_BATTERY:
3928                 p += sprintf(p, "SYSTEM:battery");
3929                 break;
3930         }
3931
3932         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3933         p += sprintf(p, "\tINDEX:%d", level);
3934         p += sprintf(p, "\n");
3935         return p - buf + 1;
3936 }
3937
3938 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3939                    store_power_level);
3940
3941 static ssize_t show_channels(struct device *d,
3942                              struct device_attribute *attr, char *buf)
3943 {
3944
3945         struct iwl_priv *priv = dev_get_drvdata(d);
3946         struct ieee80211_channel *channels = NULL;
3947         const struct ieee80211_supported_band *supp_band = NULL;
3948         int len = 0, i;
3949         int count = 0;
3950
3951         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3952                 return -EAGAIN;
3953
3954         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3955         channels = supp_band->channels;
3956         count = supp_band->n_channels;
3957
3958         len += sprintf(&buf[len],
3959                         "Displaying %d channels in 2.4GHz band "
3960                         "(802.11bg):\n", count);
3961
3962         for (i = 0; i < count; i++)
3963                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3964                                 ieee80211_frequency_to_channel(
3965                                 channels[i].center_freq),
3966                                 channels[i].max_power,
3967                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3968                                 " (IEEE 802.11h required)" : "",
3969                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3970                                 || (channels[i].flags &
3971                                 IEEE80211_CHAN_RADAR)) ? "" :
3972                                 ", IBSS",
3973                                 channels[i].flags &
3974                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3975                                 "passive only" : "active/passive");
3976
3977         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3978         channels = supp_band->channels;
3979         count = supp_band->n_channels;
3980
3981         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3982                         "(802.11a):\n", count);
3983
3984         for (i = 0; i < count; i++)
3985                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3986                                 ieee80211_frequency_to_channel(
3987                                 channels[i].center_freq),
3988                                 channels[i].max_power,
3989                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3990                                 " (IEEE 802.11h required)" : "",
3991                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3992                                 || (channels[i].flags &
3993                                 IEEE80211_CHAN_RADAR)) ? "" :
3994                                 ", IBSS",
3995                                 channels[i].flags &
3996                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3997                                 "passive only" : "active/passive");
3998
3999         return len;
4000 }
4001
4002 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4003
4004 static ssize_t show_statistics(struct device *d,
4005                                struct device_attribute *attr, char *buf)
4006 {
4007         struct iwl_priv *priv = dev_get_drvdata(d);
4008         u32 size = sizeof(struct iwl_notif_statistics);
4009         u32 len = 0, ofs = 0;
4010         u8 *data = (u8 *)&priv->statistics;
4011         int rc = 0;
4012
4013         if (!iwl_is_alive(priv))
4014                 return -EAGAIN;
4015
4016         mutex_lock(&priv->mutex);
4017         rc = iwl_send_statistics_request(priv, 0);
4018         mutex_unlock(&priv->mutex);
4019
4020         if (rc) {
4021                 len = sprintf(buf,
4022                               "Error sending statistics request: 0x%08X\n", rc);
4023                 return len;
4024         }
4025
4026         while (size && (PAGE_SIZE - len)) {
4027                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4028                                    PAGE_SIZE - len, 1);
4029                 len = strlen(buf);
4030                 if (PAGE_SIZE - len)
4031                         buf[len++] = '\n';
4032
4033                 ofs += 16;
4034                 size -= min(size, 16U);
4035         }
4036
4037         return len;
4038 }
4039
4040 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4041
4042 static ssize_t show_status(struct device *d,
4043                            struct device_attribute *attr, char *buf)
4044 {
4045         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4046         if (!iwl_is_alive(priv))
4047                 return -EAGAIN;
4048         return sprintf(buf, "0x%08x\n", (int)priv->status);
4049 }
4050
4051 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4052
4053 /*****************************************************************************
4054  *
4055  * driver setup and teardown
4056  *
4057  *****************************************************************************/
4058
4059 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4060 {
4061         priv->workqueue = create_workqueue(DRV_NAME);
4062
4063         init_waitqueue_head(&priv->wait_command_queue);
4064
4065         INIT_WORK(&priv->up, iwl4965_bg_up);
4066         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4067         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4068         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4069         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4070         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4071         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4072         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4073         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4074
4075         /* FIXME : remove when resolved PENDING */
4076         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4077         iwl_setup_scan_deferred_work(priv);
4078
4079         if (priv->cfg->ops->lib->setup_deferred_work)
4080                 priv->cfg->ops->lib->setup_deferred_work(priv);
4081
4082         init_timer(&priv->statistics_periodic);
4083         priv->statistics_periodic.data = (unsigned long)priv;
4084         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4085
4086         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4087                      iwl4965_irq_tasklet, (unsigned long)priv);
4088 }
4089
4090 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4091 {
4092         if (priv->cfg->ops->lib->cancel_deferred_work)
4093                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4094
4095         cancel_delayed_work_sync(&priv->init_alive_start);
4096         cancel_delayed_work(&priv->scan_check);
4097         cancel_delayed_work(&priv->alive_start);
4098         cancel_work_sync(&priv->beacon_update);
4099         del_timer_sync(&priv->statistics_periodic);
4100 }
4101
4102 static struct attribute *iwl4965_sysfs_entries[] = {
4103         &dev_attr_channels.attr,
4104         &dev_attr_flags.attr,
4105         &dev_attr_filter_flags.attr,
4106 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4107         &dev_attr_measurement.attr,
4108 #endif
4109         &dev_attr_power_level.attr,
4110         &dev_attr_retry_rate.attr,
4111         &dev_attr_statistics.attr,
4112         &dev_attr_status.attr,
4113         &dev_attr_temperature.attr,
4114         &dev_attr_tx_power.attr,
4115 #ifdef CONFIG_IWLWIFI_DEBUG
4116         &dev_attr_debug_level.attr,
4117 #endif
4118         &dev_attr_version.attr,
4119
4120         NULL
4121 };
4122
4123 static struct attribute_group iwl4965_attribute_group = {
4124         .name = NULL,           /* put in device directory */
4125         .attrs = iwl4965_sysfs_entries,
4126 };
4127
4128 static struct ieee80211_ops iwl4965_hw_ops = {
4129         .tx = iwl4965_mac_tx,
4130         .start = iwl4965_mac_start,
4131         .stop = iwl4965_mac_stop,
4132         .add_interface = iwl4965_mac_add_interface,
4133         .remove_interface = iwl4965_mac_remove_interface,
4134         .config = iwl4965_mac_config,
4135         .config_interface = iwl4965_mac_config_interface,
4136         .configure_filter = iwl4965_configure_filter,
4137         .set_key = iwl4965_mac_set_key,
4138         .update_tkip_key = iwl4965_mac_update_tkip_key,
4139         .get_stats = iwl4965_mac_get_stats,
4140         .get_tx_stats = iwl4965_mac_get_tx_stats,
4141         .conf_tx = iwl4965_mac_conf_tx,
4142         .reset_tsf = iwl4965_mac_reset_tsf,
4143         .bss_info_changed = iwl4965_bss_info_changed,
4144         .ampdu_action = iwl4965_mac_ampdu_action,
4145         .hw_scan = iwl4965_mac_hw_scan
4146 };
4147
4148 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4149 {
4150         int err = 0;
4151         struct iwl_priv *priv;
4152         struct ieee80211_hw *hw;
4153         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4154         unsigned long flags;
4155         DECLARE_MAC_BUF(mac);
4156
4157         /************************
4158          * 1. Allocating HW data
4159          ************************/
4160
4161         /* Disabling hardware scan means that mac80211 will perform scans
4162          * "the hard way", rather than using device's scan. */
4163         if (cfg->mod_params->disable_hw_scan) {
4164                 if (cfg->mod_params->debug & IWL_DL_INFO)
4165                         dev_printk(KERN_DEBUG, &(pdev->dev),
4166                                    "Disabling hw_scan\n");
4167                 iwl4965_hw_ops.hw_scan = NULL;
4168         }
4169
4170         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4171         if (!hw) {
4172                 err = -ENOMEM;
4173                 goto out;
4174         }
4175         priv = hw->priv;
4176         /* At this point both hw and priv are allocated. */
4177
4178         SET_IEEE80211_DEV(hw, &pdev->dev);
4179
4180         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4181         priv->cfg = cfg;
4182         priv->pci_dev = pdev;
4183
4184 #ifdef CONFIG_IWLWIFI_DEBUG
4185         priv->debug_level = priv->cfg->mod_params->debug;
4186         atomic_set(&priv->restrict_refcnt, 0);
4187 #endif
4188
4189         /**************************
4190          * 2. Initializing PCI bus
4191          **************************/
4192         if (pci_enable_device(pdev)) {
4193                 err = -ENODEV;
4194                 goto out_ieee80211_free_hw;
4195         }
4196
4197         pci_set_master(pdev);
4198
4199         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4200         if (!err)
4201                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4202         if (err) {
4203                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4204                 if (!err)
4205                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4206                 /* both attempts failed: */
4207                 if (err) {
4208                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4209                                 DRV_NAME);
4210                         goto out_pci_disable_device;
4211                 }
4212         }
4213
4214         err = pci_request_regions(pdev, DRV_NAME);
4215         if (err)
4216                 goto out_pci_disable_device;
4217
4218         pci_set_drvdata(pdev, priv);
4219
4220         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4221          * PCI Tx retries from interfering with C3 CPU state */
4222         pci_write_config_byte(pdev, 0x41, 0x00);
4223
4224         /***********************
4225          * 3. Read REV register
4226          ***********************/
4227         priv->hw_base = pci_iomap(pdev, 0, 0);
4228         if (!priv->hw_base) {
4229                 err = -ENODEV;
4230                 goto out_pci_release_regions;
4231         }
4232
4233         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4234                 (unsigned long long) pci_resource_len(pdev, 0));
4235         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4236
4237         iwl_hw_detect(priv);
4238         printk(KERN_INFO DRV_NAME
4239                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4240                 priv->cfg->name, priv->hw_rev);
4241
4242         /* amp init */
4243         err = priv->cfg->ops->lib->apm_ops.init(priv);
4244         if (err < 0) {
4245                 IWL_DEBUG_INFO("Failed to init APMG\n");
4246                 goto out_iounmap;
4247         }
4248         /*****************
4249          * 4. Read EEPROM
4250          *****************/
4251         /* Read the EEPROM */
4252         err = iwl_eeprom_init(priv);
4253         if (err) {
4254                 IWL_ERROR("Unable to init EEPROM\n");
4255                 goto out_iounmap;
4256         }
4257         err = iwl_eeprom_check_version(priv);
4258         if (err)
4259                 goto out_iounmap;
4260
4261         /* extract MAC Address */
4262         iwl_eeprom_get_mac(priv, priv->mac_addr);
4263         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4264         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4265
4266         /************************
4267          * 5. Setup HW constants
4268          ************************/
4269         if (iwl_set_hw_params(priv)) {
4270                 IWL_ERROR("failed to set hw parameters\n");
4271                 goto out_free_eeprom;
4272         }
4273
4274         /*******************
4275          * 6. Setup priv
4276          *******************/
4277
4278         err = iwl_init_drv(priv);
4279         if (err)
4280                 goto out_free_eeprom;
4281         /* At this point both hw and priv are initialized. */
4282
4283         /**********************************
4284          * 7. Initialize module parameters
4285          **********************************/
4286
4287         /* Disable radio (SW RF KILL) via parameter when loading driver */
4288         if (priv->cfg->mod_params->disable) {
4289                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4290                 IWL_DEBUG_INFO("Radio disabled.\n");
4291         }
4292
4293         /********************
4294          * 8. Setup services
4295          ********************/
4296         spin_lock_irqsave(&priv->lock, flags);
4297         iwl4965_disable_interrupts(priv);
4298         spin_unlock_irqrestore(&priv->lock, flags);
4299
4300         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4301         if (err) {
4302                 IWL_ERROR("failed to create sysfs device attributes\n");
4303                 goto out_uninit_drv;
4304         }
4305
4306
4307         iwl_setup_deferred_work(priv);
4308         iwl_setup_rx_handlers(priv);
4309
4310         /********************
4311          * 9. Conclude
4312          ********************/
4313         pci_save_state(pdev);
4314         pci_disable_device(pdev);
4315
4316         /**********************************
4317          * 10. Setup and register mac80211
4318          **********************************/
4319
4320         err = iwl_setup_mac(priv);
4321         if (err)
4322                 goto out_remove_sysfs;
4323
4324         err = iwl_dbgfs_register(priv, DRV_NAME);
4325         if (err)
4326                 IWL_ERROR("failed to create debugfs files\n");
4327
4328         err = iwl_rfkill_init(priv);
4329         if (err)
4330                 IWL_ERROR("Unable to initialize RFKILL system. "
4331                                   "Ignoring error: %d\n", err);
4332         iwl_power_initialize(priv);
4333         return 0;
4334
4335  out_remove_sysfs:
4336         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4337  out_uninit_drv:
4338         iwl_uninit_drv(priv);
4339  out_free_eeprom:
4340         iwl_eeprom_free(priv);
4341  out_iounmap:
4342         pci_iounmap(pdev, priv->hw_base);
4343  out_pci_release_regions:
4344         pci_release_regions(pdev);
4345         pci_set_drvdata(pdev, NULL);
4346  out_pci_disable_device:
4347         pci_disable_device(pdev);
4348  out_ieee80211_free_hw:
4349         ieee80211_free_hw(priv->hw);
4350  out:
4351         return err;
4352 }
4353
4354 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4355 {
4356         struct iwl_priv *priv = pci_get_drvdata(pdev);
4357         unsigned long flags;
4358
4359         if (!priv)
4360                 return;
4361
4362         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4363
4364         iwl_dbgfs_unregister(priv);
4365         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4366
4367         if (priv->mac80211_registered) {
4368                 ieee80211_unregister_hw(priv->hw);
4369                 priv->mac80211_registered = 0;
4370         }
4371
4372         set_bit(STATUS_EXIT_PENDING, &priv->status);
4373
4374         iwl4965_down(priv);
4375
4376         /* make sure we flush any pending irq or
4377          * tasklet for the driver
4378          */
4379         spin_lock_irqsave(&priv->lock, flags);
4380         iwl4965_disable_interrupts(priv);
4381         spin_unlock_irqrestore(&priv->lock, flags);
4382
4383         iwl_synchronize_irq(priv);
4384
4385         iwl_rfkill_unregister(priv);
4386         iwl4965_dealloc_ucode_pci(priv);
4387
4388         if (priv->rxq.bd)
4389                 iwl_rx_queue_free(priv, &priv->rxq);
4390         iwl_hw_txq_ctx_free(priv);
4391
4392         iwl_clear_stations_table(priv);
4393         iwl_eeprom_free(priv);
4394
4395
4396         /*netif_stop_queue(dev); */
4397         flush_workqueue(priv->workqueue);
4398
4399         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4400          * priv->workqueue... so we can't take down the workqueue
4401          * until now... */
4402         destroy_workqueue(priv->workqueue);
4403         priv->workqueue = NULL;
4404
4405         pci_iounmap(pdev, priv->hw_base);
4406         pci_release_regions(pdev);
4407         pci_disable_device(pdev);
4408         pci_set_drvdata(pdev, NULL);
4409
4410         iwl_uninit_drv(priv);
4411
4412         if (priv->ibss_beacon)
4413                 dev_kfree_skb(priv->ibss_beacon);
4414
4415         ieee80211_free_hw(priv->hw);
4416 }
4417
4418 #ifdef CONFIG_PM
4419
4420 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4421 {
4422         struct iwl_priv *priv = pci_get_drvdata(pdev);
4423
4424         if (priv->is_open) {
4425                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4426                 iwl4965_mac_stop(priv->hw);
4427                 priv->is_open = 1;
4428         }
4429
4430         pci_set_power_state(pdev, PCI_D3hot);
4431
4432         return 0;
4433 }
4434
4435 static int iwl4965_pci_resume(struct pci_dev *pdev)
4436 {
4437         struct iwl_priv *priv = pci_get_drvdata(pdev);
4438
4439         pci_set_power_state(pdev, PCI_D0);
4440
4441         if (priv->is_open)
4442                 iwl4965_mac_start(priv->hw);
4443
4444         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4445         return 0;
4446 }
4447
4448 #endif /* CONFIG_PM */
4449
4450 /*****************************************************************************
4451  *
4452  * driver and module entry point
4453  *
4454  *****************************************************************************/
4455
4456 /* Hardware specific file defines the PCI IDs table for that hardware module */
4457 static struct pci_device_id iwl_hw_card_ids[] = {
4458 #ifdef CONFIG_IWL4965
4459         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4460         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4461 #endif /* CONFIG_IWL4965 */
4462 #ifdef CONFIG_IWL5000
4463         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4464         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4465         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4466         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4467         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4468         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4469         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4470         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4471         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4472         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4473         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4474 #endif /* CONFIG_IWL5000 */
4475         {0}
4476 };
4477 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4478
4479 static struct pci_driver iwl_driver = {
4480         .name = DRV_NAME,
4481         .id_table = iwl_hw_card_ids,
4482         .probe = iwl4965_pci_probe,
4483         .remove = __devexit_p(iwl4965_pci_remove),
4484 #ifdef CONFIG_PM
4485         .suspend = iwl4965_pci_suspend,
4486         .resume = iwl4965_pci_resume,
4487 #endif
4488 };
4489
4490 static int __init iwl4965_init(void)
4491 {
4492
4493         int ret;
4494         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4495         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4496
4497         ret = iwlagn_rate_control_register();
4498         if (ret) {
4499                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4500                 return ret;
4501         }
4502
4503         ret = pci_register_driver(&iwl_driver);
4504         if (ret) {
4505                 IWL_ERROR("Unable to initialize PCI module\n");
4506                 goto error_register;
4507         }
4508
4509         return ret;
4510
4511 error_register:
4512         iwlagn_rate_control_unregister();
4513         return ret;
4514 }
4515
4516 static void __exit iwl4965_exit(void)
4517 {
4518         pci_unregister_driver(&iwl_driver);
4519         iwlagn_rate_control_unregister();
4520 }
4521
4522 module_exit(iwl4965_exit);
4523 module_init(iwl4965_init);