drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  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 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 643
 644 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 645 {
 646         u16 new_val = 0;
 647         u16 beacon_factor = 0;
 648
 649         beacon_factor =
 650             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 651                 / MAX_UCODE_BEACON_INTERVAL;
 652         new_val = beacon_val / beacon_factor;
 653
 654         return cpu_to_le16(new_val);
 655 }
 656
 657 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 658 {
 659         u64 interval_tm_unit;
 660         u64 tsf, result;
 661         unsigned long flags;
 662         struct ieee80211_conf *conf = NULL;
 663         u16 beacon_int = 0;
 664
 665         conf = ieee80211_get_hw_conf(priv->hw);
 666
 667         spin_lock_irqsave(&priv->lock, flags);
 668         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 669         priv->rxon_timing.timestamp.dw[0] =
 670                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 671
 672         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 673
 674         tsf = priv->timestamp;
 675
 676         beacon_int = priv->beacon_int;
 677         spin_unlock_irqrestore(&priv->lock, flags);
 678
 679         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 680                 if (beacon_int == 0) {
 681                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 682                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 683                 } else {
 684                         priv->rxon_timing.beacon_interval =
 685                                 cpu_to_le16(beacon_int);
 686                         priv->rxon_timing.beacon_interval =
 687                             iwl4965_adjust_beacon_interval(
 688                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 689                 }
 690
 691                 priv->rxon_timing.atim_window = 0;
 692         } else {
 693                 priv->rxon_timing.beacon_interval =
 694                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 695                 /* TODO: we need to get atim_window from upper stack
 696                  * for now we set to 0 */
 697                 priv->rxon_timing.atim_window = 0;
 698         }
 699
 700         interval_tm_unit =
 701                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 702         result = do_div(tsf, interval_tm_unit);
 703         priv->rxon_timing.beacon_init_val =
 704             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 705
 706         IWL_DEBUG_ASSOC
 707             ("beacon interval %d beacon timer %d beacon tim %d\n",
 708                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 709                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 710                 le16_to_cpu(priv->rxon_timing.atim_window));
 711 }
 712
 713 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 714                                    enum ieee80211_band band)
 715 {
 716         if (band == IEEE80211_BAND_5GHZ) {
 717                 priv->staging_rxon.flags &=
 718                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 719                       | RXON_FLG_CCK_MSK);
 720                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 721         } else {
 722                 /* Copied from iwl4965_post_associate() */
 723                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 724                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 725                 else
 726                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 727
 728                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 729                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 730
 731                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 732                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 733                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 734         }
 735 }
 736
 737 /*
 738  * initialize rxon structure with default values from eeprom
 739  */
 740 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 741 {
 742         const struct iwl_channel_info *ch_info;
 743
 744         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 745
 746         switch (priv->iw_mode) {
 747         case IEEE80211_IF_TYPE_AP:
 748                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 749                 break;
 750
 751         case IEEE80211_IF_TYPE_STA:
 752                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 753                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 754                 break;
 755
 756         case IEEE80211_IF_TYPE_IBSS:
 757                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 758                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 759                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 760                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 761                 break;
 762
 763         case IEEE80211_IF_TYPE_MNTR:
 764                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 765                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 766                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 767                 break;
 768         default:
 769                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 770                 break;
 771         }
 772
 773 #if 0
 774         /* TODO:  Figure out when short_preamble would be set and cache from
 775          * that */
 776         if (!hw_to_local(priv->hw)->short_preamble)
 777                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 778         else
 779                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 780 #endif
 781
 782         ch_info = iwl_get_channel_info(priv, priv->band,
 783                                        le16_to_cpu(priv->active_rxon.channel));
 784
 785         if (!ch_info)
 786                 ch_info = &priv->channel_info[0];
 787
 788         /*
 789          * in some case A channels are all non IBSS
 790          * in this case force B/G channel
 791          */
 792         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 793             !(is_channel_ibss(ch_info)))
 794                 ch_info = &priv->channel_info[0];
 795
 796         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 797         priv->band = ch_info->band;
 798
 799         iwl_set_flags_for_band(priv, priv->band);
 800
 801         priv->staging_rxon.ofdm_basic_rates =
 802             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 803         priv->staging_rxon.cck_basic_rates =
 804             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 805
 806         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 807                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 808         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 809         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 810         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 811         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 812         iwl_set_rxon_chain(priv);
 813 }
 814
 815 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 816 {
 817         priv->iw_mode = mode;
 818
 819         iwl4965_connection_init_rx_config(priv);
 820         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 821
 822         iwl_clear_stations_table(priv);
 823
 824         /* dont commit rxon if rf-kill is on*/
 825         if (!iwl_is_ready_rf(priv))
 826                 return -EAGAIN;
 827
 828         cancel_delayed_work(&priv->scan_check);
 829         if (iwl_scan_cancel_timeout(priv, 100)) {
 830                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 831                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 832                 return -EAGAIN;
 833         }
 834
 835         iwl4965_commit_rxon(priv);
 836
 837         return 0;
 838 }
 839
 840 static void iwl4965_set_rate(struct iwl_priv *priv)
 841 {
 842         const struct ieee80211_supported_band *hw = NULL;
 843         struct ieee80211_rate *rate;
 844         int i;
 845
 846         hw = iwl_get_hw_mode(priv, priv->band);
 847         if (!hw) {
 848                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 849                 return;
 850         }
 851
 852         priv->active_rate = 0;
 853         priv->active_rate_basic = 0;
 854
 855         for (i = 0; i < hw->n_bitrates; i++) {
 856                 rate = &(hw->bitrates[i]);
 857                 if (rate->hw_value < IWL_RATE_COUNT)
 858                         priv->active_rate |= (1 << rate->hw_value);
 859         }
 860
 861         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 862                        priv->active_rate, priv->active_rate_basic);
 863
 864         /*
 865          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 866          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 867          * OFDM
 868          */
 869         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 870                 priv->staging_rxon.cck_basic_rates =
 871                     ((priv->active_rate_basic &
 872                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 873         else
 874                 priv->staging_rxon.cck_basic_rates =
 875                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 876
 877         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 878                 priv->staging_rxon.ofdm_basic_rates =
 879                     ((priv->active_rate_basic &
 880                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 881                       IWL_FIRST_OFDM_RATE) & 0xFF;
 882         else
 883                 priv->staging_rxon.ofdm_basic_rates =
 884                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 885 }
 886
 887 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 888
 889 #include "iwl-spectrum.h"
 890
 891 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 892 #define BEACON_TIME_MASK_HIGH   0xFF000000
 893 #define TIME_UNIT               1024
 894
 895 /*
 896  * extended beacon time format
 897  * time in usec will be changed into a 32-bit value in 8:24 format
 898  * the high 1 byte is the beacon counts
 899  * the lower 3 bytes is the time in usec within one beacon interval
 900  */
 901
 902 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 903 {
 904         u32 quot;
 905         u32 rem;
 906         u32 interval = beacon_interval * 1024;
 907
 908         if (!interval || !usec)
 909                 return 0;
 910
 911         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 912         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 913
 914         return (quot << 24) + rem;
 915 }
 916
 917 /* base is usually what we get from ucode with each received frame,
 918  * the same as HW timer counter counting down
 919  */
 920
 921 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 922 {
 923         u32 base_low = base & BEACON_TIME_MASK_LOW;
 924         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 925         u32 interval = beacon_interval * TIME_UNIT;
 926         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 927             (addon & BEACON_TIME_MASK_HIGH);
 928
 929         if (base_low > addon_low)
 930                 res += base_low - addon_low;
 931         else if (base_low < addon_low) {
 932                 res += interval + base_low - addon_low;
 933                 res += (1 << 24);
 934         } else
 935                 res += (1 << 24);
 936
 937         return cpu_to_le32(res);
 938 }
 939
 940 static int iwl4965_get_measurement(struct iwl_priv *priv,
 941                                struct ieee80211_measurement_params *params,
 942                                u8 type)
 943 {
 944         struct iwl4965_spectrum_cmd spectrum;
 945         struct iwl_rx_packet *res;
 946         struct iwl_host_cmd cmd = {
 947                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 948                 .data = (void *)&spectrum,
 949                 .meta.flags = CMD_WANT_SKB,
 950         };
 951         u32 add_time = le64_to_cpu(params->start_time);
 952         int rc;
 953         int spectrum_resp_status;
 954         int duration = le16_to_cpu(params->duration);
 955
 956         if (iwl_is_associated(priv))
 957                 add_time =
 958                     iwl4965_usecs_to_beacons(
 959                         le64_to_cpu(params->start_time) - priv->last_tsf,
 960                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 961
 962         memset(&spectrum, 0, sizeof(spectrum));
 963
 964         spectrum.channel_count = cpu_to_le16(1);
 965         spectrum.flags =
 966             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 967         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 968         cmd.len = sizeof(spectrum);
 969         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 970
 971         if (iwl_is_associated(priv))
 972                 spectrum.start_time =
 973                     iwl4965_add_beacon_time(priv->last_beacon_time,
 974                                 add_time,
 975                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 976         else
 977                 spectrum.start_time = 0;
 978
 979         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 980         spectrum.channels[0].channel = params->channel;
 981         spectrum.channels[0].type = type;
 982         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 983                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 984                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 985
 986         rc = iwl_send_cmd_sync(priv, &cmd);
 987         if (rc)
 988                 return rc;
 989
 990         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 991         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 992                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 993                 rc = -EIO;
 994         }
 995
 996         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 997         switch (spectrum_resp_status) {
 998         case 0:         /* Command will be handled */
 999                 if (res->u.spectrum.id != 0xff) {
1000                         IWL_DEBUG_INFO
1001                             ("Replaced existing measurement: %d\n",
1002                              res->u.spectrum.id);
1003                         priv->measurement_status &= ~MEASUREMENT_READY;
1004                 }
1005                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1006                 rc = 0;
1007                 break;
1008
1009         case 1:         /* Command will not be handled */
1010                 rc = -EAGAIN;
1011                 break;
1012         }
1013
1014         dev_kfree_skb_any(cmd.meta.u.skb);
1015
1016         return rc;
1017 }
1018 #endif
1019
1020 /******************************************************************************
1021  *
1022  * Generic RX handler implementations
1023  *
1024  ******************************************************************************/
1025 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1026                                 struct iwl_rx_mem_buffer *rxb)
1027 {
1028         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1029         struct iwl_alive_resp *palive;
1030         struct delayed_work *pwork;
1031
1032         palive = &pkt->u.alive_frame;
1033
1034         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1035                        "0x%01X 0x%01X\n",
1036                        palive->is_valid, palive->ver_type,
1037                        palive->ver_subtype);
1038
1039         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1040                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1041                 memcpy(&priv->card_alive_init,
1042                        &pkt->u.alive_frame,
1043                        sizeof(struct iwl_init_alive_resp));
1044                 pwork = &priv->init_alive_start;
1045         } else {
1046                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1047                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1048                        sizeof(struct iwl_alive_resp));
1049                 pwork = &priv->alive_start;
1050         }
1051
1052         /* We delay the ALIVE response by 5ms to
1053          * give the HW RF Kill time to activate... */
1054         if (palive->is_valid == UCODE_VALID_OK)
1055                 queue_delayed_work(priv->workqueue, pwork,
1056                                    msecs_to_jiffies(5));
1057         else
1058                 IWL_WARNING("uCode did not respond OK.\n");
1059 }
1060
1061 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1062                                    struct iwl_rx_mem_buffer *rxb)
1063 {
1064         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1065
1066         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1067                 "seq 0x%04X ser 0x%08X\n",
1068                 le32_to_cpu(pkt->u.err_resp.error_type),
1069                 get_cmd_string(pkt->u.err_resp.cmd_id),
1070                 pkt->u.err_resp.cmd_id,
1071                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1072                 le32_to_cpu(pkt->u.err_resp.error_info));
1073 }
1074
1075 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1076
1077 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1078 {
1079         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1080         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1081         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1082         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1083                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1084         rxon->channel = csa->channel;
1085         priv->staging_rxon.channel = csa->channel;
1086 }
1087
1088 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1089                                           struct iwl_rx_mem_buffer *rxb)
1090 {
1091 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1092         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1093         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1094
1095         if (!report->state) {
1096                 IWL_DEBUG(IWL_DL_11H,
1097                         "Spectrum Measure Notification: Start\n");
1098                 return;
1099         }
1100
1101         memcpy(&priv->measure_report, report, sizeof(*report));
1102         priv->measurement_status |= MEASUREMENT_READY;
1103 #endif
1104 }
1105
1106 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1107                                       struct iwl_rx_mem_buffer *rxb)
1108 {
1109 #ifdef CONFIG_IWLWIFI_DEBUG
1110         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1111         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1112         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1113                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1114 #endif
1115 }
1116
1117 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1118                                              struct iwl_rx_mem_buffer *rxb)
1119 {
1120         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1121         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1122                         "notification for %s:\n",
1123                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1124         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1125 }
1126
1127 static void iwl4965_bg_beacon_update(struct work_struct *work)
1128 {
1129         struct iwl_priv *priv =
1130                 container_of(work, struct iwl_priv, beacon_update);
1131         struct sk_buff *beacon;
1132
1133         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1134         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1135
1136         if (!beacon) {
1137                 IWL_ERROR("update beacon failed\n");
1138                 return;
1139         }
1140
1141         mutex_lock(&priv->mutex);
1142         /* new beacon skb is allocated every time; dispose previous.*/
1143         if (priv->ibss_beacon)
1144                 dev_kfree_skb(priv->ibss_beacon);
1145
1146         priv->ibss_beacon = beacon;
1147         mutex_unlock(&priv->mutex);
1148
1149         iwl4965_send_beacon_cmd(priv);
1150 }
1151
1152 /**
1153  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1154  *
1155  * This callback is provided in order to send a statistics request.
1156  *
1157  * This timer function is continually reset to execute within
1158  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1159  * was received.  We need to ensure we receive the statistics in order
1160  * to update the temperature used for calibrating the TXPOWER.
1161  */
1162 static void iwl4965_bg_statistics_periodic(unsigned long data)
1163 {
1164         struct iwl_priv *priv = (struct iwl_priv *)data;
1165
1166         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1167                 return;
1168
1169         iwl_send_statistics_request(priv, CMD_ASYNC);
1170 }
1171
1172 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1173                                 struct iwl_rx_mem_buffer *rxb)
1174 {
1175 #ifdef CONFIG_IWLWIFI_DEBUG
1176         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1177         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1178         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1179
1180         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1181                 "tsf %d %d rate %d\n",
1182                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1183                 beacon->beacon_notify_hdr.failure_frame,
1184                 le32_to_cpu(beacon->ibss_mgr_status),
1185                 le32_to_cpu(beacon->high_tsf),
1186                 le32_to_cpu(beacon->low_tsf), rate);
1187 #endif
1188
1189         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1190             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1191                 queue_work(priv->workqueue, &priv->beacon_update);
1192 }
1193
1194 /* Handle notification from uCode that card's power state is changing
1195  * due to software, hardware, or critical temperature RFKILL */
1196 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1197                                     struct iwl_rx_mem_buffer *rxb)
1198 {
1199         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1200         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1201         unsigned long status = priv->status;
1202
1203         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1204                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1205                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1206
1207         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1208                      RF_CARD_DISABLED)) {
1209
1210                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1211                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1212
1213                 if (!iwl_grab_nic_access(priv)) {
1214                         iwl_write_direct32(
1215                                 priv, HBUS_TARG_MBX_C,
1216                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1217
1218                         iwl_release_nic_access(priv);
1219                 }
1220
1221                 if (!(flags & RXON_CARD_DISABLED)) {
1222                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1223                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1224                         if (!iwl_grab_nic_access(priv)) {
1225                                 iwl_write_direct32(
1226                                         priv, HBUS_TARG_MBX_C,
1227                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1228
1229                                 iwl_release_nic_access(priv);
1230                         }
1231                 }
1232
1233                 if (flags & RF_CARD_DISABLED) {
1234                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1235                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1236                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1237                         if (!iwl_grab_nic_access(priv))
1238                                 iwl_release_nic_access(priv);
1239                 }
1240         }
1241
1242         if (flags & HW_CARD_DISABLED)
1243                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1244         else
1245                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1246
1247
1248         if (flags & SW_CARD_DISABLED)
1249                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1250         else
1251                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1252
1253         if (!(flags & RXON_CARD_DISABLED))
1254                 iwl_scan_cancel(priv);
1255
1256         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1257              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1258             (test_bit(STATUS_RF_KILL_SW, &status) !=
1259              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1260                 queue_work(priv->workqueue, &priv->rf_kill);
1261         else
1262                 wake_up_interruptible(&priv->wait_command_queue);
1263 }
1264
1265 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1266 {
1267         int ret;
1268         unsigned long flags;
1269
1270         spin_lock_irqsave(&priv->lock, flags);
1271         ret = iwl_grab_nic_access(priv);
1272         if (ret)
1273                 goto err;
1274
1275         if (src == IWL_PWR_SRC_VAUX) {
1276                 u32 val;
1277                 ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
1278                                             &val);
1279
1280                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1281                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1283                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1284         } else {
1285                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1286                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1287                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1288         }
1289
1290         iwl_release_nic_access(priv);
1291 err:
1292         spin_unlock_irqrestore(&priv->lock, flags);
1293         return ret;
1294 }
1295
1296 /**
1297  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1298  *
1299  * Setup the RX handlers for each of the reply types sent from the uCode
1300  * to the host.
1301  *
1302  * This function chains into the hardware specific files for them to setup
1303  * any hardware specific handlers as well.
1304  */
1305 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1306 {
1307         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1308         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1309         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1310         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1311             iwl4965_rx_spectrum_measure_notif;
1312         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1313         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1314             iwl4965_rx_pm_debug_statistics_notif;
1315         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1316
1317         /*
1318          * The same handler is used for both the REPLY to a discrete
1319          * statistics request from the host as well as for the periodic
1320          * statistics notifications (after received beacons) from the uCode.
1321          */
1322         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1323         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1324
1325         iwl_setup_rx_scan_handlers(priv);
1326
1327         /* status change handler */
1328         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1329
1330         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1331             iwl_rx_missed_beacon_notif;
1332         /* Rx handlers */
1333         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1334         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1335         /* block ack */
1336         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1337         /* Set up hardware specific Rx handlers */
1338         priv->cfg->ops->lib->rx_handler_setup(priv);
1339 }
1340
1341 /*
1342  * this should be called while priv->lock is locked
1343 */
1344 static void __iwl_rx_replenish(struct iwl_priv *priv)
1345 {
1346         iwl_rx_allocate(priv);
1347         iwl_rx_queue_restock(priv);
1348 }
1349
1350
1351 /**
1352  * iwl_rx_handle - Main entry function for receiving responses from uCode
1353  *
1354  * Uses the priv->rx_handlers callback function array to invoke
1355  * the appropriate handlers, including command responses,
1356  * frame-received notifications, and other notifications.
1357  */
1358 void iwl_rx_handle(struct iwl_priv *priv)
1359 {
1360         struct iwl_rx_mem_buffer *rxb;
1361         struct iwl_rx_packet *pkt;
1362         struct iwl_rx_queue *rxq = &priv->rxq;
1363         u32 r, i;
1364         int reclaim;
1365         unsigned long flags;
1366         u8 fill_rx = 0;
1367         u32 count = 8;
1368
1369         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1370          * buffer that the driver may process (last buffer filled by ucode). */
1371         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1372         i = rxq->read;
1373
1374         /* Rx interrupt, but nothing sent from uCode */
1375         if (i == r)
1376                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1377
1378         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1379                 fill_rx = 1;
1380
1381         while (i != r) {
1382                 rxb = rxq->queue[i];
1383
1384                 /* If an RXB doesn't have a Rx queue slot associated with it,
1385                  * then a bug has been introduced in the queue refilling
1386                  * routines -- catch it here */
1387                 BUG_ON(rxb == NULL);
1388
1389                 rxq->queue[i] = NULL;
1390
1391                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1392                                             priv->hw_params.rx_buf_size,
1393                                             PCI_DMA_FROMDEVICE);
1394                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1395
1396                 /* Reclaim a command buffer only if this packet is a response
1397                  *   to a (driver-originated) command.
1398                  * If the packet (e.g. Rx frame) originated from uCode,
1399                  *   there is no command buffer to reclaim.
1400                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1401                  *   but apparently a few don't get set; catch them here. */
1402                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1403                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1404                         (pkt->hdr.cmd != REPLY_RX) &&
1405                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1406                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1407                         (pkt->hdr.cmd != REPLY_TX);
1408
1409                 /* Based on type of command response or notification,
1410                  *   handle those that need handling via function in
1411                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1412                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1413                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1414                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1415                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1416                 } else {
1417                         /* No handling needed */
1418                         IWL_DEBUG(IWL_DL_RX,
1419                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1420                                 r, i, get_cmd_string(pkt->hdr.cmd),
1421                                 pkt->hdr.cmd);
1422                 }
1423
1424                 if (reclaim) {
1425                         /* Invoke any callbacks, transfer the skb to caller, and
1426                          * fire off the (possibly) blocking iwl_send_cmd()
1427                          * as we reclaim the driver command queue */
1428                         if (rxb && rxb->skb)
1429                                 iwl_tx_cmd_complete(priv, rxb);
1430                         else
1431                                 IWL_WARNING("Claim null rxb?\n");
1432                 }
1433
1434                 /* For now we just don't re-use anything.  We can tweak this
1435                  * later to try and re-use notification packets and SKBs that
1436                  * fail to Rx correctly */
1437                 if (rxb->skb != NULL) {
1438                         priv->alloc_rxb_skb--;
1439                         dev_kfree_skb_any(rxb->skb);
1440                         rxb->skb = NULL;
1441                 }
1442
1443                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1444                                  priv->hw_params.rx_buf_size,
1445                                  PCI_DMA_FROMDEVICE);
1446                 spin_lock_irqsave(&rxq->lock, flags);
1447                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1448                 spin_unlock_irqrestore(&rxq->lock, flags);
1449                 i = (i + 1) & RX_QUEUE_MASK;
1450                 /* If there are a lot of unused frames,
1451                  * restock the Rx queue so ucode wont assert. */
1452                 if (fill_rx) {
1453                         count++;
1454                         if (count >= 8) {
1455                                 priv->rxq.read = i;
1456                                 __iwl_rx_replenish(priv);
1457                                 count = 0;
1458                         }
1459                 }
1460         }
1461
1462         /* Backtrack one entry */
1463         priv->rxq.read = i;
1464         iwl_rx_queue_restock(priv);
1465 }
1466
1467 #ifdef CONFIG_IWLWIFI_DEBUG
1468 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1469 {
1470         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1471         DECLARE_MAC_BUF(mac);
1472
1473         IWL_DEBUG_RADIO("RX CONFIG:\n");
1474         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1475         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1476         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1477         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1478                         le32_to_cpu(rxon->filter_flags));
1479         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1480         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1481                         rxon->ofdm_basic_rates);
1482         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1483         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1484                         print_mac(mac, rxon->node_addr));
1485         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1486                         print_mac(mac, rxon->bssid_addr));
1487         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1488 }
1489 #endif
1490
1491 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1492 {
1493         IWL_DEBUG_ISR("Enabling interrupts\n");
1494         set_bit(STATUS_INT_ENABLED, &priv->status);
1495         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1496 }
1497
1498 /* call this function to flush any scheduled tasklet */
1499 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1500 {
1501         /* wait to make sure we flush pedding tasklet*/
1502         synchronize_irq(priv->pci_dev->irq);
1503         tasklet_kill(&priv->irq_tasklet);
1504 }
1505
1506 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1507 {
1508         clear_bit(STATUS_INT_ENABLED, &priv->status);
1509
1510         /* disable interrupts from uCode/NIC to host */
1511         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1512
1513         /* acknowledge/clear/reset any interrupts still pending
1514          * from uCode or flow handler (Rx/Tx DMA) */
1515         iwl_write32(priv, CSR_INT, 0xffffffff);
1516         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1517         IWL_DEBUG_ISR("Disabled interrupts\n");
1518 }
1519
1520
1521 /**
1522  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1523  */
1524 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1525 {
1526         /* Set the FW error flag -- cleared on iwl4965_down */
1527         set_bit(STATUS_FW_ERROR, &priv->status);
1528
1529         /* Cancel currently queued command. */
1530         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1531
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1534                 iwl_dump_nic_error_log(priv);
1535                 iwl_dump_nic_event_log(priv);
1536                 iwl4965_print_rx_config_cmd(priv);
1537         }
1538 #endif
1539
1540         wake_up_interruptible(&priv->wait_command_queue);
1541
1542         /* Keep the restart process from trying to send host
1543          * commands by clearing the INIT status bit */
1544         clear_bit(STATUS_READY, &priv->status);
1545
1546         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1547                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1548                           "Restarting adapter due to uCode error.\n");
1549
1550                 if (iwl_is_associated(priv)) {
1551                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1552                                sizeof(priv->recovery_rxon));
1553                         priv->error_recovering = 1;
1554                 }
1555                 if (priv->cfg->mod_params->restart_fw)
1556                         queue_work(priv->workqueue, &priv->restart);
1557         }
1558 }
1559
1560 static void iwl4965_error_recovery(struct iwl_priv *priv)
1561 {
1562         unsigned long flags;
1563
1564         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1565                sizeof(priv->staging_rxon));
1566         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1567         iwl4965_commit_rxon(priv);
1568
1569         iwl_rxon_add_station(priv, priv->bssid, 1);
1570
1571         spin_lock_irqsave(&priv->lock, flags);
1572         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1573         priv->error_recovering = 0;
1574         spin_unlock_irqrestore(&priv->lock, flags);
1575 }
1576
1577 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1578 {
1579         u32 inta, handled = 0;
1580         u32 inta_fh;
1581         unsigned long flags;
1582 #ifdef CONFIG_IWLWIFI_DEBUG
1583         u32 inta_mask;
1584 #endif
1585
1586         spin_lock_irqsave(&priv->lock, flags);
1587
1588         /* Ack/clear/reset pending uCode interrupts.
1589          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1590          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1591         inta = iwl_read32(priv, CSR_INT);
1592         iwl_write32(priv, CSR_INT, inta);
1593
1594         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1595          * Any new interrupts that happen after this, either while we're
1596          * in this tasklet, or later, will show up in next ISR/tasklet. */
1597         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1598         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1599
1600 #ifdef CONFIG_IWLWIFI_DEBUG
1601         if (priv->debug_level & IWL_DL_ISR) {
1602                 /* just for debug */
1603                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1604                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1605                               inta, inta_mask, inta_fh);
1606         }
1607 #endif
1608
1609         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1610          * atomic, make sure that inta covers all the interrupts that
1611          * we've discovered, even if FH interrupt came in just after
1612          * reading CSR_INT. */
1613         if (inta_fh & CSR49_FH_INT_RX_MASK)
1614                 inta |= CSR_INT_BIT_FH_RX;
1615         if (inta_fh & CSR49_FH_INT_TX_MASK)
1616                 inta |= CSR_INT_BIT_FH_TX;
1617
1618         /* Now service all interrupt bits discovered above. */
1619         if (inta & CSR_INT_BIT_HW_ERR) {
1620                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1621
1622                 /* Tell the device to stop sending interrupts */
1623                 iwl4965_disable_interrupts(priv);
1624
1625                 iwl4965_irq_handle_error(priv);
1626
1627                 handled |= CSR_INT_BIT_HW_ERR;
1628
1629                 spin_unlock_irqrestore(&priv->lock, flags);
1630
1631                 return;
1632         }
1633
1634 #ifdef CONFIG_IWLWIFI_DEBUG
1635         if (priv->debug_level & (IWL_DL_ISR)) {
1636                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1637                 if (inta & CSR_INT_BIT_SCD)
1638                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1639                                       "the frame/frames.\n");
1640
1641                 /* Alive notification via Rx interrupt will do the real work */
1642                 if (inta & CSR_INT_BIT_ALIVE)
1643                         IWL_DEBUG_ISR("Alive interrupt\n");
1644         }
1645 #endif
1646         /* Safely ignore these bits for debug checks below */
1647         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1648
1649         /* HW RF KILL switch toggled */
1650         if (inta & CSR_INT_BIT_RF_KILL) {
1651                 int hw_rf_kill = 0;
1652                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1653                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1654                         hw_rf_kill = 1;
1655
1656                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1657                                 hw_rf_kill ? "disable radio":"enable radio");
1658
1659                 /* driver only loads ucode once setting the interface up.
1660                  * the driver as well won't allow loading if RFKILL is set
1661                  * therefore no need to restart the driver from this handler
1662                  */
1663                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1664                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1665
1666                 handled |= CSR_INT_BIT_RF_KILL;
1667         }
1668
1669         /* Chip got too hot and stopped itself */
1670         if (inta & CSR_INT_BIT_CT_KILL) {
1671                 IWL_ERROR("Microcode CT kill error detected.\n");
1672                 handled |= CSR_INT_BIT_CT_KILL;
1673         }
1674
1675         /* Error detected by uCode */
1676         if (inta & CSR_INT_BIT_SW_ERR) {
1677                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1678                           inta);
1679                 iwl4965_irq_handle_error(priv);
1680                 handled |= CSR_INT_BIT_SW_ERR;
1681         }
1682
1683         /* uCode wakes up after power-down sleep */
1684         if (inta & CSR_INT_BIT_WAKEUP) {
1685                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1686                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1687                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1688                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1689                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1690                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1691                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1692                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1693
1694                 handled |= CSR_INT_BIT_WAKEUP;
1695         }
1696
1697         /* All uCode command responses, including Tx command responses,
1698          * Rx "responses" (frame-received notification), and other
1699          * notifications from uCode come through here*/
1700         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1701                 iwl_rx_handle(priv);
1702                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1703         }
1704
1705         if (inta & CSR_INT_BIT_FH_TX) {
1706                 IWL_DEBUG_ISR("Tx interrupt\n");
1707                 handled |= CSR_INT_BIT_FH_TX;
1708                 /* FH finished to write, send event */
1709                 priv->ucode_write_complete = 1;
1710                 wake_up_interruptible(&priv->wait_command_queue);
1711         }
1712
1713         if (inta & ~handled)
1714                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1715
1716         if (inta & ~CSR_INI_SET_MASK) {
1717                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1718                          inta & ~CSR_INI_SET_MASK);
1719                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1720         }
1721
1722         /* Re-enable all interrupts */
1723         /* only Re-enable if diabled by irq */
1724         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1725                 iwl4965_enable_interrupts(priv);
1726
1727 #ifdef CONFIG_IWLWIFI_DEBUG
1728         if (priv->debug_level & (IWL_DL_ISR)) {
1729                 inta = iwl_read32(priv, CSR_INT);
1730                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1731                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1732                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1733                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1734         }
1735 #endif
1736         spin_unlock_irqrestore(&priv->lock, flags);
1737 }
1738
1739 static irqreturn_t iwl4965_isr(int irq, void *data)
1740 {
1741         struct iwl_priv *priv = data;
1742         u32 inta, inta_mask;
1743         u32 inta_fh;
1744         if (!priv)
1745                 return IRQ_NONE;
1746
1747         spin_lock(&priv->lock);
1748
1749         /* Disable (but don't clear!) interrupts here to avoid
1750          *    back-to-back ISRs and sporadic interrupts from our NIC.
1751          * If we have something to service, the tasklet will re-enable ints.
1752          * If we *don't* have something, we'll re-enable before leaving here. */
1753         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1754         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1755
1756         /* Discover which interrupts are active/pending */
1757         inta = iwl_read32(priv, CSR_INT);
1758         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1759
1760         /* Ignore interrupt if there's nothing in NIC to service.
1761          * This may be due to IRQ shared with another device,
1762          * or due to sporadic interrupts thrown from our NIC. */
1763         if (!inta && !inta_fh) {
1764                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1765                 goto none;
1766         }
1767
1768         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1769                 /* Hardware disappeared. It might have already raised
1770                  * an interrupt */
1771                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1772                 goto unplugged;
1773         }
1774
1775         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1776                       inta, inta_mask, inta_fh);
1777
1778         inta &= ~CSR_INT_BIT_SCD;
1779
1780         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1781         if (likely(inta || inta_fh))
1782                 tasklet_schedule(&priv->irq_tasklet);
1783
1784  unplugged:
1785         spin_unlock(&priv->lock);
1786         return IRQ_HANDLED;
1787
1788  none:
1789         /* re-enable interrupts here since we don't have anything to service. */
1790         /* only Re-enable if diabled by irq */
1791         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1792                 iwl4965_enable_interrupts(priv);
1793         spin_unlock(&priv->lock);
1794         return IRQ_NONE;
1795 }
1796
1797 /******************************************************************************
1798  *
1799  * uCode download functions
1800  *
1801  ******************************************************************************/
1802
1803 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1804 {
1805         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1806         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1807         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1808         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1809         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1810         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1811 }
1812
1813 static void iwl4965_nic_start(struct iwl_priv *priv)
1814 {
1815         /* Remove all resets to allow NIC to operate */
1816         iwl_write32(priv, CSR_RESET, 0);
1817 }
1818
1819
1820 /**
1821  * iwl4965_read_ucode - Read uCode images from disk file.
1822  *
1823  * Copy into buffers for card to fetch via bus-mastering
1824  */
1825 static int iwl4965_read_ucode(struct iwl_priv *priv)
1826 {
1827         struct iwl_ucode *ucode;
1828         int ret;
1829         const struct firmware *ucode_raw;
1830         const char *name = priv->cfg->fw_name;
1831         u8 *src;
1832         size_t len;
1833         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1834
1835         /* Ask kernel firmware_class module to get the boot firmware off disk.
1836          * request_firmware() is synchronous, file is in memory on return. */
1837         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1838         if (ret < 0) {
1839                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1840                                         name, ret);
1841                 goto error;
1842         }
1843
1844         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1845                        name, ucode_raw->size);
1846
1847         /* Make sure that we got at least our header! */
1848         if (ucode_raw->size < sizeof(*ucode)) {
1849                 IWL_ERROR("File size way too small!\n");
1850                 ret = -EINVAL;
1851                 goto err_release;
1852         }
1853
1854         /* Data from ucode file:  header followed by uCode images */
1855         ucode = (void *)ucode_raw->data;
1856
1857         ver = le32_to_cpu(ucode->ver);
1858         inst_size = le32_to_cpu(ucode->inst_size);
1859         data_size = le32_to_cpu(ucode->data_size);
1860         init_size = le32_to_cpu(ucode->init_size);
1861         init_data_size = le32_to_cpu(ucode->init_data_size);
1862         boot_size = le32_to_cpu(ucode->boot_size);
1863
1864         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1865         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1866                        inst_size);
1867         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1868                        data_size);
1869         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1870                        init_size);
1871         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1872                        init_data_size);
1873         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1874                        boot_size);
1875
1876         /* Verify size of file vs. image size info in file's header */
1877         if (ucode_raw->size < sizeof(*ucode) +
1878                 inst_size + data_size + init_size +
1879                 init_data_size + boot_size) {
1880
1881                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1882                                (int)ucode_raw->size);
1883                 ret = -EINVAL;
1884                 goto err_release;
1885         }
1886
1887         /* Verify that uCode images will fit in card's SRAM */
1888         if (inst_size > priv->hw_params.max_inst_size) {
1889                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1890                                inst_size);
1891                 ret = -EINVAL;
1892                 goto err_release;
1893         }
1894
1895         if (data_size > priv->hw_params.max_data_size) {
1896                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1897                                 data_size);
1898                 ret = -EINVAL;
1899                 goto err_release;
1900         }
1901         if (init_size > priv->hw_params.max_inst_size) {
1902                 IWL_DEBUG_INFO
1903                     ("uCode init instr len %d too large to fit in\n",
1904                       init_size);
1905                 ret = -EINVAL;
1906                 goto err_release;
1907         }
1908         if (init_data_size > priv->hw_params.max_data_size) {
1909                 IWL_DEBUG_INFO
1910                     ("uCode init data len %d too large to fit in\n",
1911                       init_data_size);
1912                 ret = -EINVAL;
1913                 goto err_release;
1914         }
1915         if (boot_size > priv->hw_params.max_bsm_size) {
1916                 IWL_DEBUG_INFO
1917                     ("uCode boot instr len %d too large to fit in\n",
1918                       boot_size);
1919                 ret = -EINVAL;
1920                 goto err_release;
1921         }
1922
1923         /* Allocate ucode buffers for card's bus-master loading ... */
1924
1925         /* Runtime instructions and 2 copies of data:
1926          * 1) unmodified from disk
1927          * 2) backup cache for save/restore during power-downs */
1928         priv->ucode_code.len = inst_size;
1929         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1930
1931         priv->ucode_data.len = data_size;
1932         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1933
1934         priv->ucode_data_backup.len = data_size;
1935         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1936
1937         /* Initialization instructions and data */
1938         if (init_size && init_data_size) {
1939                 priv->ucode_init.len = init_size;
1940                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1941
1942                 priv->ucode_init_data.len = init_data_size;
1943                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1944
1945                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1946                         goto err_pci_alloc;
1947         }
1948
1949         /* Bootstrap (instructions only, no data) */
1950         if (boot_size) {
1951                 priv->ucode_boot.len = boot_size;
1952                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1953
1954                 if (!priv->ucode_boot.v_addr)
1955                         goto err_pci_alloc;
1956         }
1957
1958         /* Copy images into buffers for card's bus-master reads ... */
1959
1960         /* Runtime instructions (first block of data in file) */
1961         src = &ucode->data[0];
1962         len = priv->ucode_code.len;
1963         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1964         memcpy(priv->ucode_code.v_addr, src, len);
1965         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1966                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1967
1968         /* Runtime data (2nd block)
1969          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1970         src = &ucode->data[inst_size];
1971         len = priv->ucode_data.len;
1972         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1973         memcpy(priv->ucode_data.v_addr, src, len);
1974         memcpy(priv->ucode_data_backup.v_addr, src, len);
1975
1976         /* Initialization instructions (3rd block) */
1977         if (init_size) {
1978                 src = &ucode->data[inst_size + data_size];
1979                 len = priv->ucode_init.len;
1980                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1981                                 len);
1982                 memcpy(priv->ucode_init.v_addr, src, len);
1983         }
1984
1985         /* Initialization data (4th block) */
1986         if (init_data_size) {
1987                 src = &ucode->data[inst_size + data_size + init_size];
1988                 len = priv->ucode_init_data.len;
1989                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1990                                len);
1991                 memcpy(priv->ucode_init_data.v_addr, src, len);
1992         }
1993
1994         /* Bootstrap instructions (5th block) */
1995         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1996         len = priv->ucode_boot.len;
1997         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1998         memcpy(priv->ucode_boot.v_addr, src, len);
1999
2000         /* We have our copies now, allow OS release its copies */
2001         release_firmware(ucode_raw);
2002         return 0;
2003
2004  err_pci_alloc:
2005         IWL_ERROR("failed to allocate pci memory\n");
2006         ret = -ENOMEM;
2007         iwl4965_dealloc_ucode_pci(priv);
2008
2009  err_release:
2010         release_firmware(ucode_raw);
2011
2012  error:
2013         return ret;
2014 }
2015
2016 /**
2017  * iwl_alive_start - called after REPLY_ALIVE notification received
2018  *                   from protocol/runtime uCode (initialization uCode's
2019  *                   Alive gets handled by iwl_init_alive_start()).
2020  */
2021 static void iwl_alive_start(struct iwl_priv *priv)
2022 {
2023         int ret = 0;
2024
2025         IWL_DEBUG_INFO("Runtime Alive received.\n");
2026
2027         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2028                 /* We had an error bringing up the hardware, so take it
2029                  * all the way back down so we can try again */
2030                 IWL_DEBUG_INFO("Alive failed.\n");
2031                 goto restart;
2032         }
2033
2034         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2035          * This is a paranoid check, because we would not have gotten the
2036          * "runtime" alive if code weren't properly loaded.  */
2037         if (iwl_verify_ucode(priv)) {
2038                 /* Runtime instruction load was bad;
2039                  * take it all the way back down so we can try again */
2040                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2041                 goto restart;
2042         }
2043
2044         iwl_clear_stations_table(priv);
2045         ret = priv->cfg->ops->lib->alive_notify(priv);
2046         if (ret) {
2047                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2048                             ret);
2049                 goto restart;
2050         }
2051
2052         /* After the ALIVE response, we can send host commands to 4965 uCode */
2053         set_bit(STATUS_ALIVE, &priv->status);
2054
2055         if (iwl_is_rfkill(priv))
2056                 return;
2057
2058         ieee80211_wake_queues(priv->hw);
2059
2060         priv->active_rate = priv->rates_mask;
2061         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2062
2063         if (iwl_is_associated(priv)) {
2064                 struct iwl_rxon_cmd *active_rxon =
2065                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2066
2067                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2068                        sizeof(priv->staging_rxon));
2069                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2070         } else {
2071                 /* Initialize our rx_config data */
2072                 iwl4965_connection_init_rx_config(priv);
2073                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2074         }
2075
2076         /* Configure Bluetooth device coexistence support */
2077         iwl4965_send_bt_config(priv);
2078
2079         iwl_reset_run_time_calib(priv);
2080
2081         /* Configure the adapter for unassociated operation */
2082         iwl4965_commit_rxon(priv);
2083
2084         /* At this point, the NIC is initialized and operational */
2085         iwl_rf_kill_ct_config(priv);
2086
2087         iwl_leds_register(priv);
2088
2089         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2090         set_bit(STATUS_READY, &priv->status);
2091         wake_up_interruptible(&priv->wait_command_queue);
2092
2093         if (priv->error_recovering)
2094                 iwl4965_error_recovery(priv);
2095
2096         iwl_power_update_mode(priv, 1);
2097         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2098
2099         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2100                 iwl4965_set_mode(priv, priv->iw_mode);
2101
2102         return;
2103
2104  restart:
2105         queue_work(priv->workqueue, &priv->restart);
2106 }
2107
2108 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2109
2110 static void __iwl4965_down(struct iwl_priv *priv)
2111 {
2112         unsigned long flags;
2113         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2114
2115         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2116
2117         if (!exit_pending)
2118                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2119
2120         iwl_leds_unregister(priv);
2121
2122         iwl_clear_stations_table(priv);
2123
2124         /* Unblock any waiting calls */
2125         wake_up_interruptible_all(&priv->wait_command_queue);
2126
2127         /* Wipe out the EXIT_PENDING status bit if we are not actually
2128          * exiting the module */
2129         if (!exit_pending)
2130                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2131
2132         /* stop and reset the on-board processor */
2133         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2134
2135         /* tell the device to stop sending interrupts */
2136         spin_lock_irqsave(&priv->lock, flags);
2137         iwl4965_disable_interrupts(priv);
2138         spin_unlock_irqrestore(&priv->lock, flags);
2139         iwl_synchronize_irq(priv);
2140
2141         if (priv->mac80211_registered)
2142                 ieee80211_stop_queues(priv->hw);
2143
2144         /* If we have not previously called iwl4965_init() then
2145          * clear all bits but the RF Kill and SUSPEND bits and return */
2146         if (!iwl_is_init(priv)) {
2147                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2148                                         STATUS_RF_KILL_HW |
2149                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2150                                         STATUS_RF_KILL_SW |
2151                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2152                                         STATUS_GEO_CONFIGURED |
2153                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2154                                         STATUS_IN_SUSPEND |
2155                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2156                                         STATUS_EXIT_PENDING;
2157                 goto exit;
2158         }
2159
2160         /* ...otherwise clear out all the status bits but the RF Kill and
2161          * SUSPEND bits and continue taking the NIC down. */
2162         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2163                                 STATUS_RF_KILL_HW |
2164                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2165                                 STATUS_RF_KILL_SW |
2166                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2167                                 STATUS_GEO_CONFIGURED |
2168                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2169                                 STATUS_IN_SUSPEND |
2170                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2171                                 STATUS_FW_ERROR |
2172                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2173                                 STATUS_EXIT_PENDING;
2174
2175         spin_lock_irqsave(&priv->lock, flags);
2176         iwl_clear_bit(priv, CSR_GP_CNTRL,
2177                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2178         spin_unlock_irqrestore(&priv->lock, flags);
2179
2180         iwl_txq_ctx_stop(priv);
2181         iwl_rxq_stop(priv);
2182
2183         spin_lock_irqsave(&priv->lock, flags);
2184         if (!iwl_grab_nic_access(priv)) {
2185                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2186                                          APMG_CLK_VAL_DMA_CLK_RQT);
2187                 iwl_release_nic_access(priv);
2188         }
2189         spin_unlock_irqrestore(&priv->lock, flags);
2190
2191         udelay(5);
2192
2193         /* FIXME: apm_ops.suspend(priv) */
2194         priv->cfg->ops->lib->apm_ops.reset(priv);
2195         priv->cfg->ops->lib->free_shared_mem(priv);
2196
2197  exit:
2198         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2199
2200         if (priv->ibss_beacon)
2201                 dev_kfree_skb(priv->ibss_beacon);
2202         priv->ibss_beacon = NULL;
2203
2204         /* clear out any free frames */
2205         iwl_clear_free_frames(priv);
2206 }
2207
2208 static void iwl4965_down(struct iwl_priv *priv)
2209 {
2210         mutex_lock(&priv->mutex);
2211         __iwl4965_down(priv);
2212         mutex_unlock(&priv->mutex);
2213
2214         iwl_cancel_deferred_work(priv);
2215 }
2216
2217 #define MAX_HW_RESTARTS 5
2218
2219 static int __iwl4965_up(struct iwl_priv *priv)
2220 {
2221         int i;
2222         int ret;
2223
2224         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2225                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2226                 return -EIO;
2227         }
2228
2229         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2230                 IWL_ERROR("ucode not available for device bringup\n");
2231                 return -EIO;
2232         }
2233
2234         /* If platform's RF_KILL switch is NOT set to KILL */
2235         if (iwl_read32(priv, CSR_GP_CNTRL) &
2236                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2237                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2238         else
2239                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2240
2241         if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2242             iwl_is_rfkill(priv)) {
2243                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2244                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2245                 return -ENODEV;
2246         }
2247
2248         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2249
2250         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2251         if (ret) {
2252                 IWL_ERROR("Unable to allocate shared memory\n");
2253                 return ret;
2254         }
2255
2256         ret = iwl_hw_nic_init(priv);
2257         if (ret) {
2258                 IWL_ERROR("Unable to init nic\n");
2259                 return ret;
2260         }
2261
2262         /* make sure rfkill handshake bits are cleared */
2263         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2264         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2265                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2266
2267         /* clear (again), then enable host interrupts */
2268         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2269         iwl4965_enable_interrupts(priv);
2270
2271         /* really make sure rfkill handshake bits are cleared */
2272         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2273         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2274
2275         /* Copy original ucode data image from disk into backup cache.
2276          * This will be used to initialize the on-board processor's
2277          * data SRAM for a clean start when the runtime program first loads. */
2278         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2279                priv->ucode_data.len);
2280
2281         /* We return success when we resume from suspend and rf_kill is on. */
2282         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2283             test_bit(STATUS_RF_KILL_SW, &priv->status))
2284                 return 0;
2285
2286         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2287
2288                 iwl_clear_stations_table(priv);
2289
2290                 /* load bootstrap state machine,
2291                  * load bootstrap program into processor's memory,
2292                  * prepare to load the "initialize" uCode */
2293                 ret = priv->cfg->ops->lib->load_ucode(priv);
2294
2295                 if (ret) {
2296                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2297                         continue;
2298                 }
2299
2300                 /* Clear out the uCode error bit if it is set */
2301                 clear_bit(STATUS_FW_ERROR, &priv->status);
2302
2303                 /* start card; "initialize" will load runtime ucode */
2304                 iwl4965_nic_start(priv);
2305
2306                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2307
2308                 return 0;
2309         }
2310
2311         set_bit(STATUS_EXIT_PENDING, &priv->status);
2312         __iwl4965_down(priv);
2313         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2314
2315         /* tried to restart and config the device for as long as our
2316          * patience could withstand */
2317         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2318         return -EIO;
2319 }
2320
2321
2322 /*****************************************************************************
2323  *
2324  * Workqueue callbacks
2325  *
2326  *****************************************************************************/
2327
2328 static void iwl_bg_init_alive_start(struct work_struct *data)
2329 {
2330         struct iwl_priv *priv =
2331             container_of(data, struct iwl_priv, init_alive_start.work);
2332
2333         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2334                 return;
2335
2336         mutex_lock(&priv->mutex);
2337         priv->cfg->ops->lib->init_alive_start(priv);
2338         mutex_unlock(&priv->mutex);
2339 }
2340
2341 static void iwl_bg_alive_start(struct work_struct *data)
2342 {
2343         struct iwl_priv *priv =
2344             container_of(data, struct iwl_priv, alive_start.work);
2345
2346         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2347                 return;
2348
2349         mutex_lock(&priv->mutex);
2350         iwl_alive_start(priv);
2351         mutex_unlock(&priv->mutex);
2352 }
2353
2354 static void iwl4965_bg_rf_kill(struct work_struct *work)
2355 {
2356         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2357
2358         wake_up_interruptible(&priv->wait_command_queue);
2359
2360         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2361                 return;
2362
2363         mutex_lock(&priv->mutex);
2364
2365         if (!iwl_is_rfkill(priv)) {
2366                 IWL_DEBUG(IWL_DL_RF_KILL,
2367                           "HW and/or SW RF Kill no longer active, restarting "
2368                           "device\n");
2369                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2370                         queue_work(priv->workqueue, &priv->restart);
2371         } else {
2372                 /* make sure mac80211 stop sending Tx frame */
2373                 if (priv->mac80211_registered)
2374                         ieee80211_stop_queues(priv->hw);
2375
2376                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2377                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2378                                           "disabled by SW switch\n");
2379                 else
2380                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2381                                     "Kill switch must be turned off for "
2382                                     "wireless networking to work.\n");
2383         }
2384         mutex_unlock(&priv->mutex);
2385         iwl_rfkill_set_hw_state(priv);
2386 }
2387
2388 static void iwl4965_bg_set_monitor(struct work_struct *work)
2389 {
2390         struct iwl_priv *priv = container_of(work,
2391                                 struct iwl_priv, set_monitor);
2392         int ret;
2393
2394         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2395
2396         mutex_lock(&priv->mutex);
2397
2398         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2399
2400         if (ret) {
2401                 if (ret == -EAGAIN)
2402                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2403                 else
2404                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2405         }
2406
2407         mutex_unlock(&priv->mutex);
2408 }
2409
2410 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2411 {
2412         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2413                         run_time_calib_work);
2414
2415         mutex_lock(&priv->mutex);
2416
2417         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2418             test_bit(STATUS_SCANNING, &priv->status)) {
2419                 mutex_unlock(&priv->mutex);
2420                 return;
2421         }
2422
2423         if (priv->start_calib) {
2424                 iwl_chain_noise_calibration(priv, &priv->statistics);
2425
2426                 iwl_sensitivity_calibration(priv, &priv->statistics);
2427         }
2428
2429         mutex_unlock(&priv->mutex);
2430         return;
2431 }
2432
2433 static void iwl4965_bg_up(struct work_struct *data)
2434 {
2435         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2436
2437         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2438                 return;
2439
2440         mutex_lock(&priv->mutex);
2441         __iwl4965_up(priv);
2442         mutex_unlock(&priv->mutex);
2443         iwl_rfkill_set_hw_state(priv);
2444 }
2445
2446 static void iwl4965_bg_restart(struct work_struct *data)
2447 {
2448         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2449
2450         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2451                 return;
2452
2453         iwl4965_down(priv);
2454         queue_work(priv->workqueue, &priv->up);
2455 }
2456
2457 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2458 {
2459         struct iwl_priv *priv =
2460             container_of(data, struct iwl_priv, rx_replenish);
2461
2462         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2463                 return;
2464
2465         mutex_lock(&priv->mutex);
2466         iwl_rx_replenish(priv);
2467         mutex_unlock(&priv->mutex);
2468 }
2469
2470 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2471
2472 static void iwl4965_post_associate(struct iwl_priv *priv)
2473 {
2474         struct ieee80211_conf *conf = NULL;
2475         int ret = 0;
2476         DECLARE_MAC_BUF(mac);
2477         unsigned long flags;
2478
2479         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2480                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2481                 return;
2482         }
2483
2484         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2485                         priv->assoc_id,
2486                         print_mac(mac, priv->active_rxon.bssid_addr));
2487
2488
2489         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2490                 return;
2491
2492
2493         if (!priv->vif || !priv->is_open)
2494                 return;
2495
2496         iwl_scan_cancel_timeout(priv, 200);
2497
2498         conf = ieee80211_get_hw_conf(priv->hw);
2499
2500         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2501         iwl4965_commit_rxon(priv);
2502
2503         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2504         iwl4965_setup_rxon_timing(priv);
2505         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2506                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2507         if (ret)
2508                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2509                             "Attempting to continue.\n");
2510
2511         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2512
2513         if (priv->current_ht_config.is_ht)
2514                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2515
2516         iwl_set_rxon_chain(priv);
2517         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2518
2519         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2520                         priv->assoc_id, priv->beacon_int);
2521
2522         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2523                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2524         else
2525                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2526
2527         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2528                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2529                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2530                 else
2531                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2532
2533                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2534                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2535
2536         }
2537
2538         iwl4965_commit_rxon(priv);
2539
2540         switch (priv->iw_mode) {
2541         case IEEE80211_IF_TYPE_STA:
2542                 break;
2543
2544         case IEEE80211_IF_TYPE_IBSS:
2545
2546                 /* assume default assoc id */
2547                 priv->assoc_id = 1;
2548
2549                 iwl_rxon_add_station(priv, priv->bssid, 0);
2550                 iwl4965_send_beacon_cmd(priv);
2551
2552                 break;
2553
2554         default:
2555                 IWL_ERROR("%s Should not be called in %d mode\n",
2556                                 __FUNCTION__, priv->iw_mode);
2557                 break;
2558         }
2559
2560         /* Enable Rx differential gain and sensitivity calibrations */
2561         iwl_chain_noise_reset(priv);
2562         priv->start_calib = 1;
2563
2564         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2565                 priv->assoc_station_added = 1;
2566
2567         spin_lock_irqsave(&priv->lock, flags);
2568         iwl_activate_qos(priv, 0);
2569         spin_unlock_irqrestore(&priv->lock, flags);
2570
2571         iwl_power_update_mode(priv, 0);
2572         /* we have just associated, don't start scan too early */
2573         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2574 }
2575
2576 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2577
2578 static void iwl_bg_scan_completed(struct work_struct *work)
2579 {
2580         struct iwl_priv *priv =
2581             container_of(work, struct iwl_priv, scan_completed);
2582
2583         IWL_DEBUG_SCAN("SCAN complete scan\n");
2584
2585         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2586                 return;
2587
2588         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2589                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2590
2591         ieee80211_scan_completed(priv->hw);
2592
2593         /* Since setting the TXPOWER may have been deferred while
2594          * performing the scan, fire one off */
2595         mutex_lock(&priv->mutex);
2596         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2597         mutex_unlock(&priv->mutex);
2598 }
2599
2600 /*****************************************************************************
2601  *
2602  * mac80211 entry point functions
2603  *
2604  *****************************************************************************/
2605
2606 #define UCODE_READY_TIMEOUT     (4 * HZ)
2607
2608 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2609 {
2610         struct iwl_priv *priv = hw->priv;
2611         int ret;
2612
2613         IWL_DEBUG_MAC80211("enter\n");
2614
2615         if (pci_enable_device(priv->pci_dev)) {
2616                 IWL_ERROR("Fail to pci_enable_device\n");
2617                 return -ENODEV;
2618         }
2619         pci_restore_state(priv->pci_dev);
2620         pci_enable_msi(priv->pci_dev);
2621
2622         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2623                           DRV_NAME, priv);
2624         if (ret) {
2625                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2626                 goto out_disable_msi;
2627         }
2628
2629         /* we should be verifying the device is ready to be opened */
2630         mutex_lock(&priv->mutex);
2631
2632         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2633         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2634          * ucode filename and max sizes are card-specific. */
2635
2636         if (!priv->ucode_code.len) {
2637                 ret = iwl4965_read_ucode(priv);
2638                 if (ret) {
2639                         IWL_ERROR("Could not read microcode: %d\n", ret);
2640                         mutex_unlock(&priv->mutex);
2641                         goto out_release_irq;
2642                 }
2643         }
2644
2645         ret = __iwl4965_up(priv);
2646
2647         mutex_unlock(&priv->mutex);
2648
2649         iwl_rfkill_set_hw_state(priv);
2650
2651         if (ret)
2652                 goto out_release_irq;
2653
2654         IWL_DEBUG_INFO("Start UP work done.\n");
2655
2656         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2657                 return 0;
2658
2659         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2660          * mac80211 will not be run successfully. */
2661         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2662                         test_bit(STATUS_READY, &priv->status),
2663                         UCODE_READY_TIMEOUT);
2664         if (!ret) {
2665                 if (!test_bit(STATUS_READY, &priv->status)) {
2666                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2667                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2668                         ret = -ETIMEDOUT;
2669                         goto out_release_irq;
2670                 }
2671         }
2672
2673         priv->is_open = 1;
2674         IWL_DEBUG_MAC80211("leave\n");
2675         return 0;
2676
2677 out_release_irq:
2678         free_irq(priv->pci_dev->irq, priv);
2679 out_disable_msi:
2680         pci_disable_msi(priv->pci_dev);
2681         pci_disable_device(priv->pci_dev);
2682         priv->is_open = 0;
2683         IWL_DEBUG_MAC80211("leave - failed\n");
2684         return ret;
2685 }
2686
2687 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2688 {
2689         struct iwl_priv *priv = hw->priv;
2690
2691         IWL_DEBUG_MAC80211("enter\n");
2692
2693         if (!priv->is_open) {
2694                 IWL_DEBUG_MAC80211("leave - skip\n");
2695                 return;
2696         }
2697
2698         priv->is_open = 0;
2699
2700         if (iwl_is_ready_rf(priv)) {
2701                 /* stop mac, cancel any scan request and clear
2702                  * RXON_FILTER_ASSOC_MSK BIT
2703                  */
2704                 mutex_lock(&priv->mutex);
2705                 iwl_scan_cancel_timeout(priv, 100);
2706                 mutex_unlock(&priv->mutex);
2707         }
2708
2709         iwl4965_down(priv);
2710
2711         flush_workqueue(priv->workqueue);
2712         free_irq(priv->pci_dev->irq, priv);
2713         pci_disable_msi(priv->pci_dev);
2714         pci_save_state(priv->pci_dev);
2715         pci_disable_device(priv->pci_dev);
2716
2717         IWL_DEBUG_MAC80211("leave\n");
2718 }
2719
2720 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2721 {
2722         struct iwl_priv *priv = hw->priv;
2723
2724         IWL_DEBUG_MAC80211("enter\n");
2725
2726         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2727                 IWL_DEBUG_MAC80211("leave - monitor\n");
2728                 dev_kfree_skb_any(skb);
2729                 return 0;
2730         }
2731
2732         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2733                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2734
2735         if (iwl_tx_skb(priv, skb))
2736                 dev_kfree_skb_any(skb);
2737
2738         IWL_DEBUG_MAC80211("leave\n");
2739         return 0;
2740 }
2741
2742 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2743                                  struct ieee80211_if_init_conf *conf)
2744 {
2745         struct iwl_priv *priv = hw->priv;
2746         unsigned long flags;
2747         DECLARE_MAC_BUF(mac);
2748
2749         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2750
2751         if (priv->vif) {
2752                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2753                 return -EOPNOTSUPP;
2754         }
2755
2756         spin_lock_irqsave(&priv->lock, flags);
2757         priv->vif = conf->vif;
2758
2759         spin_unlock_irqrestore(&priv->lock, flags);
2760
2761         mutex_lock(&priv->mutex);
2762
2763         if (conf->mac_addr) {
2764                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2765                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2766         }
2767
2768         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2769                 /* we are not ready, will run again when ready */
2770                 set_bit(STATUS_MODE_PENDING, &priv->status);
2771
2772         mutex_unlock(&priv->mutex);
2773
2774         IWL_DEBUG_MAC80211("leave\n");
2775         return 0;
2776 }
2777
2778 /**
2779  * iwl4965_mac_config - mac80211 config callback
2780  *
2781  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2782  * be set inappropriately and the driver currently sets the hardware up to
2783  * use it whenever needed.
2784  */
2785 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2786 {
2787         struct iwl_priv *priv = hw->priv;
2788         const struct iwl_channel_info *ch_info;
2789         unsigned long flags;
2790         int ret = 0;
2791         u16 channel;
2792
2793         mutex_lock(&priv->mutex);
2794         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2795
2796         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2797
2798         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2799                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2800                 goto out;
2801         }
2802
2803         if (!conf->radio_enabled)
2804                 iwl_radio_kill_sw_disable_radio(priv);
2805
2806         if (!iwl_is_ready(priv)) {
2807                 IWL_DEBUG_MAC80211("leave - not ready\n");
2808                 ret = -EIO;
2809                 goto out;
2810         }
2811
2812         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2813                      test_bit(STATUS_SCANNING, &priv->status))) {
2814                 IWL_DEBUG_MAC80211("leave - scanning\n");
2815                 set_bit(STATUS_CONF_PENDING, &priv->status);
2816                 mutex_unlock(&priv->mutex);
2817                 return 0;
2818         }
2819
2820         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2821         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2822         if (!is_channel_valid(ch_info)) {
2823                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2824                 ret = -EINVAL;
2825                 goto out;
2826         }
2827
2828         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2829             !is_channel_ibss(ch_info)) {
2830                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2831                         conf->channel->hw_value, conf->channel->band);
2832                 ret = -EINVAL;
2833                 goto out;
2834         }
2835
2836         spin_lock_irqsave(&priv->lock, flags);
2837
2838         /* if we are switching from ht to 2.4 clear flags
2839          * from any ht related info since 2.4 does not
2840          * support ht */
2841         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2842 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2843             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2844 #endif
2845         )
2846                 priv->staging_rxon.flags = 0;
2847
2848         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2849
2850         iwl_set_flags_for_band(priv, conf->channel->band);
2851
2852         /* The list of supported rates and rate mask can be different
2853          * for each band; since the band may have changed, reset
2854          * the rate mask to what mac80211 lists */
2855         iwl4965_set_rate(priv);
2856
2857         spin_unlock_irqrestore(&priv->lock, flags);
2858
2859 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2860         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2861                 iwl4965_hw_channel_switch(priv, conf->channel);
2862                 goto out;
2863         }
2864 #endif
2865
2866         if (!conf->radio_enabled) {
2867                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2868                 goto out;
2869         }
2870
2871         if (iwl_is_rfkill(priv)) {
2872                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2873                 ret = -EIO;
2874                 goto out;
2875         }
2876
2877         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2878                            priv->tx_power_user_lmt, conf->power_level);
2879
2880         iwl_set_tx_power(priv, conf->power_level, false);
2881
2882         iwl4965_set_rate(priv);
2883
2884         if (memcmp(&priv->active_rxon,
2885                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2886                 iwl4965_commit_rxon(priv);
2887         else
2888                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2889
2890         IWL_DEBUG_MAC80211("leave\n");
2891
2892 out:
2893         clear_bit(STATUS_CONF_PENDING, &priv->status);
2894         mutex_unlock(&priv->mutex);
2895         return ret;
2896 }
2897
2898 static void iwl4965_config_ap(struct iwl_priv *priv)
2899 {
2900         int ret = 0;
2901         unsigned long flags;
2902
2903         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2904                 return;
2905
2906         /* The following should be done only at AP bring up */
2907         if (!(iwl_is_associated(priv))) {
2908
2909                 /* RXON - unassoc (to set timing command) */
2910                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2911                 iwl4965_commit_rxon(priv);
2912
2913                 /* RXON Timing */
2914                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2915                 iwl4965_setup_rxon_timing(priv);
2916                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2917                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2918                 if (ret)
2919                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2920                                         "Attempting to continue.\n");
2921
2922                 iwl_set_rxon_chain(priv);
2923
2924                 /* FIXME: what should be the assoc_id for AP? */
2925                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2926                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2927                         priv->staging_rxon.flags |=
2928                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2929                 else
2930                         priv->staging_rxon.flags &=
2931                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2932
2933                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2934                         if (priv->assoc_capability &
2935                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2936                                 priv->staging_rxon.flags |=
2937                                         RXON_FLG_SHORT_SLOT_MSK;
2938                         else
2939                                 priv->staging_rxon.flags &=
2940                                         ~RXON_FLG_SHORT_SLOT_MSK;
2941
2942                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2943                                 priv->staging_rxon.flags &=
2944                                         ~RXON_FLG_SHORT_SLOT_MSK;
2945                 }
2946                 /* restore RXON assoc */
2947                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2948                 iwl4965_commit_rxon(priv);
2949                 spin_lock_irqsave(&priv->lock, flags);
2950                 iwl_activate_qos(priv, 1);
2951                 spin_unlock_irqrestore(&priv->lock, flags);
2952                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2953         }
2954         iwl4965_send_beacon_cmd(priv);
2955
2956         /* FIXME - we need to add code here to detect a totally new
2957          * configuration, reset the AP, unassoc, rxon timing, assoc,
2958          * clear sta table, add BCAST sta... */
2959 }
2960
2961 /* temporary */
2962 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2963
2964 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2965                                         struct ieee80211_vif *vif,
2966                                     struct ieee80211_if_conf *conf)
2967 {
2968         struct iwl_priv *priv = hw->priv;
2969         DECLARE_MAC_BUF(mac);
2970         unsigned long flags;
2971         int rc;
2972
2973         if (conf == NULL)
2974                 return -EIO;
2975
2976         if (priv->vif != vif) {
2977                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2978                 return 0;
2979         }
2980
2981         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2982             conf->changed & IEEE80211_IFCC_BEACON) {
2983                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2984                 if (!beacon)
2985                         return -ENOMEM;
2986                 rc = iwl4965_mac_beacon_update(hw, beacon);
2987                 if (rc)
2988                         return rc;
2989         }
2990
2991         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2992             (!conf->ssid_len)) {
2993                 IWL_DEBUG_MAC80211
2994                     ("Leaving in AP mode because HostAPD is not ready.\n");
2995                 return 0;
2996         }
2997
2998         if (!iwl_is_alive(priv))
2999                 return -EAGAIN;
3000
3001         mutex_lock(&priv->mutex);
3002
3003         if (conf->bssid)
3004                 IWL_DEBUG_MAC80211("bssid: %s\n",
3005                                    print_mac(mac, conf->bssid));
3006
3007 /*
3008  * very dubious code was here; the probe filtering flag is never set:
3009  *
3010         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3011             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3012  */
3013
3014         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3015                 if (!conf->bssid) {
3016                         conf->bssid = priv->mac_addr;
3017                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3018                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3019                                            print_mac(mac, conf->bssid));
3020                 }
3021                 if (priv->ibss_beacon)
3022                         dev_kfree_skb(priv->ibss_beacon);
3023
3024                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3025         }
3026
3027         if (iwl_is_rfkill(priv))
3028                 goto done;
3029
3030         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3031             !is_multicast_ether_addr(conf->bssid)) {
3032                 /* If there is currently a HW scan going on in the background
3033                  * then we need to cancel it else the RXON below will fail. */
3034                 if (iwl_scan_cancel_timeout(priv, 100)) {
3035                         IWL_WARNING("Aborted scan still in progress "
3036                                     "after 100ms\n");
3037                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3038                         mutex_unlock(&priv->mutex);
3039                         return -EAGAIN;
3040                 }
3041                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3042
3043                 /* TODO: Audit driver for usage of these members and see
3044                  * if mac80211 deprecates them (priv->bssid looks like it
3045                  * shouldn't be there, but I haven't scanned the IBSS code
3046                  * to verify) - jpk */
3047                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3048
3049                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3050                         iwl4965_config_ap(priv);
3051                 else {
3052                         rc = iwl4965_commit_rxon(priv);
3053                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3054                                 iwl_rxon_add_station(
3055                                         priv, priv->active_rxon.bssid_addr, 1);
3056                 }
3057
3058         } else {
3059                 iwl_scan_cancel_timeout(priv, 100);
3060                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3061                 iwl4965_commit_rxon(priv);
3062         }
3063
3064  done:
3065         spin_lock_irqsave(&priv->lock, flags);
3066         if (!conf->ssid_len)
3067                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3068         else
3069                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3070
3071         priv->essid_len = conf->ssid_len;
3072         spin_unlock_irqrestore(&priv->lock, flags);
3073
3074         IWL_DEBUG_MAC80211("leave\n");
3075         mutex_unlock(&priv->mutex);
3076
3077         return 0;
3078 }
3079
3080 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3081                                  unsigned int changed_flags,
3082                                  unsigned int *total_flags,
3083                                  int mc_count, struct dev_addr_list *mc_list)
3084 {
3085         struct iwl_priv *priv = hw->priv;
3086
3087         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3088                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3089                                    IEEE80211_IF_TYPE_MNTR,
3090                                    changed_flags, *total_flags);
3091                 /* queue work 'cuz mac80211 is holding a lock which
3092                  * prevents us from issuing (synchronous) f/w cmds */
3093                 queue_work(priv->workqueue, &priv->set_monitor);
3094         }
3095         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3096                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3097 }
3098
3099 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3100                                      struct ieee80211_if_init_conf *conf)
3101 {
3102         struct iwl_priv *priv = hw->priv;
3103
3104         IWL_DEBUG_MAC80211("enter\n");
3105
3106         mutex_lock(&priv->mutex);
3107
3108         if (iwl_is_ready_rf(priv)) {
3109                 iwl_scan_cancel_timeout(priv, 100);
3110                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3111                 iwl4965_commit_rxon(priv);
3112         }
3113         if (priv->vif == conf->vif) {
3114                 priv->vif = NULL;
3115                 memset(priv->bssid, 0, ETH_ALEN);
3116                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3117                 priv->essid_len = 0;
3118         }
3119         mutex_unlock(&priv->mutex);
3120
3121         IWL_DEBUG_MAC80211("leave\n");
3122
3123 }
3124
3125 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3126 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3127                                      struct ieee80211_vif *vif,
3128                                      struct ieee80211_bss_conf *bss_conf,
3129                                      u32 changes)
3130 {
3131         struct iwl_priv *priv = hw->priv;
3132
3133         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3134
3135         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3136                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3137                                    bss_conf->use_short_preamble);
3138                 if (bss_conf->use_short_preamble)
3139                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3140                 else
3141                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3142         }
3143
3144         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3145                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3146                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3147                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3148                 else
3149                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3150         }
3151
3152         if (changes & BSS_CHANGED_HT) {
3153                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3154                 iwl4965_ht_conf(priv, bss_conf);
3155                 iwl_set_rxon_chain(priv);
3156         }
3157
3158         if (changes & BSS_CHANGED_ASSOC) {
3159                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3160                 /* This should never happen as this function should
3161                  * never be called from interrupt context. */
3162                 if (WARN_ON_ONCE(in_interrupt()))
3163                         return;
3164                 if (bss_conf->assoc) {
3165                         priv->assoc_id = bss_conf->aid;
3166                         priv->beacon_int = bss_conf->beacon_int;
3167                         priv->timestamp = bss_conf->timestamp;
3168                         priv->assoc_capability = bss_conf->assoc_capability;
3169                         priv->next_scan_jiffies = jiffies +
3170                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3171                         mutex_lock(&priv->mutex);
3172                         iwl4965_post_associate(priv);
3173                         mutex_unlock(&priv->mutex);
3174                 } else {
3175                         priv->assoc_id = 0;
3176                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3177                 }
3178         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3179                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3180                         iwl_send_rxon_assoc(priv);
3181         }
3182
3183 }
3184
3185 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3186 {
3187         int rc = 0;
3188         unsigned long flags;
3189         struct iwl_priv *priv = hw->priv;
3190
3191         IWL_DEBUG_MAC80211("enter\n");
3192
3193         mutex_lock(&priv->mutex);
3194         spin_lock_irqsave(&priv->lock, flags);
3195
3196         if (!iwl_is_ready_rf(priv)) {
3197                 rc = -EIO;
3198                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3199                 goto out_unlock;
3200         }
3201
3202         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3203                 rc = -EIO;
3204                 IWL_ERROR("ERROR: APs don't scan\n");
3205                 goto out_unlock;
3206         }
3207
3208         /* we don't schedule scan within next_scan_jiffies period */
3209         if (priv->next_scan_jiffies &&
3210                         time_after(priv->next_scan_jiffies, jiffies)) {
3211                 rc = -EAGAIN;
3212                 goto out_unlock;
3213         }
3214         /* if we just finished scan ask for delay */
3215         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3216                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3217                 rc = -EAGAIN;
3218                 goto out_unlock;
3219         }
3220         if (len) {
3221                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3222                                iwl_escape_essid(ssid, len), (int)len);
3223
3224                 priv->one_direct_scan = 1;
3225                 priv->direct_ssid_len = (u8)
3226                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3227                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3228         } else
3229                 priv->one_direct_scan = 0;
3230
3231         rc = iwl_scan_initiate(priv);
3232
3233         IWL_DEBUG_MAC80211("leave\n");
3234
3235 out_unlock:
3236         spin_unlock_irqrestore(&priv->lock, flags);
3237         mutex_unlock(&priv->mutex);
3238
3239         return rc;
3240 }
3241
3242 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3243                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3244                         u32 iv32, u16 *phase1key)
3245 {
3246         struct iwl_priv *priv = hw->priv;
3247         u8 sta_id = IWL_INVALID_STATION;
3248         unsigned long flags;
3249         __le16 key_flags = 0;
3250         int i;
3251         DECLARE_MAC_BUF(mac);
3252
3253         IWL_DEBUG_MAC80211("enter\n");
3254
3255         sta_id = iwl_find_station(priv, addr);
3256         if (sta_id == IWL_INVALID_STATION) {
3257                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3258                                    print_mac(mac, addr));
3259                 return;
3260         }
3261
3262         iwl_scan_cancel_timeout(priv, 100);
3263
3264         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3265         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3266         key_flags &= ~STA_KEY_FLG_INVALID;
3267
3268         if (sta_id == priv->hw_params.bcast_sta_id)
3269                 key_flags |= STA_KEY_MULTICAST_MSK;
3270
3271         spin_lock_irqsave(&priv->sta_lock, flags);
3272
3273         priv->stations[sta_id].sta.key.key_flags = key_flags;
3274         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3275
3276         for (i = 0; i < 5; i++)
3277                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3278                         cpu_to_le16(phase1key[i]);
3279
3280         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3281         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3282
3283         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3284
3285         spin_unlock_irqrestore(&priv->sta_lock, flags);
3286
3287         IWL_DEBUG_MAC80211("leave\n");
3288 }
3289
3290 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3291                            const u8 *local_addr, const u8 *addr,
3292                            struct ieee80211_key_conf *key)
3293 {
3294         struct iwl_priv *priv = hw->priv;
3295         DECLARE_MAC_BUF(mac);
3296         int ret = 0;
3297         u8 sta_id = IWL_INVALID_STATION;
3298         u8 is_default_wep_key = 0;
3299
3300         IWL_DEBUG_MAC80211("enter\n");
3301
3302         if (priv->hw_params.sw_crypto) {
3303                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3304                 return -EOPNOTSUPP;
3305         }
3306
3307         if (is_zero_ether_addr(addr))
3308                 /* only support pairwise keys */
3309                 return -EOPNOTSUPP;
3310
3311         sta_id = iwl_find_station(priv, addr);
3312         if (sta_id == IWL_INVALID_STATION) {
3313                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3314                                    print_mac(mac, addr));
3315                 return -EINVAL;
3316
3317         }
3318
3319         mutex_lock(&priv->mutex);
3320         iwl_scan_cancel_timeout(priv, 100);
3321         mutex_unlock(&priv->mutex);
3322
3323         /* If we are getting WEP group key and we didn't receive any key mapping
3324          * so far, we are in legacy wep mode (group key only), otherwise we are
3325          * in 1X mode.
3326          * In legacy wep mode, we use another host command to the uCode */
3327         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3328                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3329                 if (cmd == SET_KEY)
3330                         is_default_wep_key = !priv->key_mapping_key;
3331                 else
3332                         is_default_wep_key =
3333                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3334         }
3335
3336         switch (cmd) {
3337         case SET_KEY:
3338                 if (is_default_wep_key)
3339                         ret = iwl_set_default_wep_key(priv, key);
3340                 else
3341                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3342
3343                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3344                 break;
3345         case DISABLE_KEY:
3346                 if (is_default_wep_key)
3347                         ret = iwl_remove_default_wep_key(priv, key);
3348                 else
3349                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3350
3351                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3352                 break;
3353         default:
3354                 ret = -EINVAL;
3355         }
3356
3357         IWL_DEBUG_MAC80211("leave\n");
3358
3359         return ret;
3360 }
3361
3362 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3363                            const struct ieee80211_tx_queue_params *params)
3364 {
3365         struct iwl_priv *priv = hw->priv;
3366         unsigned long flags;
3367         int q;
3368
3369         IWL_DEBUG_MAC80211("enter\n");
3370
3371         if (!iwl_is_ready_rf(priv)) {
3372                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3373                 return -EIO;
3374         }
3375
3376         if (queue >= AC_NUM) {
3377                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3378                 return 0;
3379         }
3380
3381         if (!priv->qos_data.qos_enable) {
3382                 priv->qos_data.qos_active = 0;
3383                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3384                 return 0;
3385         }
3386         q = AC_NUM - 1 - queue;
3387
3388         spin_lock_irqsave(&priv->lock, flags);
3389
3390         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3391         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3392         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3393         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3394                         cpu_to_le16((params->txop * 32));
3395
3396         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3397         priv->qos_data.qos_active = 1;
3398
3399         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3400                 iwl_activate_qos(priv, 1);
3401         else if (priv->assoc_id && iwl_is_associated(priv))
3402                 iwl_activate_qos(priv, 0);
3403
3404         spin_unlock_irqrestore(&priv->lock, flags);
3405
3406         IWL_DEBUG_MAC80211("leave\n");
3407         return 0;
3408 }
3409
3410 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3411                              enum ieee80211_ampdu_mlme_action action,
3412                              const u8 *addr, u16 tid, u16 *ssn)
3413 {
3414         struct iwl_priv *priv = hw->priv;
3415         DECLARE_MAC_BUF(mac);
3416
3417         IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3418                      print_mac(mac, addr), tid);
3419
3420         if (!(priv->cfg->sku & IWL_SKU_N))
3421                 return -EACCES;
3422
3423         switch (action) {
3424         case IEEE80211_AMPDU_RX_START:
3425                 IWL_DEBUG_HT("start Rx\n");
3426                 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3427         case IEEE80211_AMPDU_RX_STOP:
3428                 IWL_DEBUG_HT("stop Rx\n");
3429                 return iwl_rx_agg_stop(priv, addr, tid);
3430         case IEEE80211_AMPDU_TX_START:
3431                 IWL_DEBUG_HT("start Tx\n");
3432                 return iwl_tx_agg_start(priv, addr, tid, ssn);
3433         case IEEE80211_AMPDU_TX_STOP:
3434                 IWL_DEBUG_HT("stop Tx\n");
3435                 return iwl_tx_agg_stop(priv, addr, tid);
3436         default:
3437                 IWL_DEBUG_HT("unknown\n");
3438                 return -EINVAL;
3439                 break;
3440         }
3441         return 0;
3442 }
3443 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3444                                 struct ieee80211_tx_queue_stats *stats)
3445 {
3446         struct iwl_priv *priv = hw->priv;
3447         int i, avail;
3448         struct iwl_tx_queue *txq;
3449         struct iwl_queue *q;
3450         unsigned long flags;
3451
3452         IWL_DEBUG_MAC80211("enter\n");
3453
3454         if (!iwl_is_ready_rf(priv)) {
3455                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3456                 return -EIO;
3457         }
3458
3459         spin_lock_irqsave(&priv->lock, flags);
3460
3461         for (i = 0; i < AC_NUM; i++) {
3462                 txq = &priv->txq[i];
3463                 q = &txq->q;
3464                 avail = iwl_queue_space(q);
3465
3466                 stats[i].len = q->n_window - avail;
3467                 stats[i].limit = q->n_window - q->high_mark;
3468                 stats[i].count = q->n_window;
3469
3470         }
3471         spin_unlock_irqrestore(&priv->lock, flags);
3472
3473         IWL_DEBUG_MAC80211("leave\n");
3474
3475         return 0;
3476 }
3477
3478 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3479                              struct ieee80211_low_level_stats *stats)
3480 {
3481         struct iwl_priv *priv = hw->priv;
3482
3483         priv = hw->priv;
3484         IWL_DEBUG_MAC80211("enter\n");
3485         IWL_DEBUG_MAC80211("leave\n");
3486
3487         return 0;
3488 }
3489
3490 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3491 {
3492         struct iwl_priv *priv = hw->priv;
3493         unsigned long flags;
3494
3495         mutex_lock(&priv->mutex);
3496         IWL_DEBUG_MAC80211("enter\n");
3497
3498         spin_lock_irqsave(&priv->lock, flags);
3499         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3500         spin_unlock_irqrestore(&priv->lock, flags);
3501
3502         iwl_reset_qos(priv);
3503
3504         spin_lock_irqsave(&priv->lock, flags);
3505         priv->assoc_id = 0;
3506         priv->assoc_capability = 0;
3507         priv->assoc_station_added = 0;
3508
3509         /* new association get rid of ibss beacon skb */
3510         if (priv->ibss_beacon)
3511                 dev_kfree_skb(priv->ibss_beacon);
3512
3513         priv->ibss_beacon = NULL;
3514
3515         priv->beacon_int = priv->hw->conf.beacon_int;
3516         priv->timestamp = 0;
3517         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3518                 priv->beacon_int = 0;
3519
3520         spin_unlock_irqrestore(&priv->lock, flags);
3521
3522         if (!iwl_is_ready_rf(priv)) {
3523                 IWL_DEBUG_MAC80211("leave - not ready\n");
3524                 mutex_unlock(&priv->mutex);
3525                 return;
3526         }
3527
3528         /* we are restarting association process
3529          * clear RXON_FILTER_ASSOC_MSK bit
3530          */
3531         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3532                 iwl_scan_cancel_timeout(priv, 100);
3533                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3534                 iwl4965_commit_rxon(priv);
3535         }
3536
3537         iwl_power_update_mode(priv, 0);
3538
3539         /* Per mac80211.h: This is only used in IBSS mode... */
3540         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3541
3542                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3543                 mutex_unlock(&priv->mutex);
3544                 return;
3545         }
3546
3547         iwl4965_set_rate(priv);
3548
3549         mutex_unlock(&priv->mutex);
3550
3551         IWL_DEBUG_MAC80211("leave\n");
3552 }
3553
3554 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3555 {
3556         struct iwl_priv *priv = hw->priv;
3557         unsigned long flags;
3558         __le64 timestamp;
3559
3560         mutex_lock(&priv->mutex);
3561         IWL_DEBUG_MAC80211("enter\n");
3562
3563         if (!iwl_is_ready_rf(priv)) {
3564                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3565                 mutex_unlock(&priv->mutex);
3566                 return -EIO;
3567         }
3568
3569         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3570                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3571                 mutex_unlock(&priv->mutex);
3572                 return -EIO;
3573         }
3574
3575         spin_lock_irqsave(&priv->lock, flags);
3576
3577         if (priv->ibss_beacon)
3578                 dev_kfree_skb(priv->ibss_beacon);
3579
3580         priv->ibss_beacon = skb;
3581
3582         priv->assoc_id = 0;
3583         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3584         priv->timestamp = le64_to_cpu(timestamp) +  (priv->beacon_int * 1000);
3585
3586         IWL_DEBUG_MAC80211("leave\n");
3587         spin_unlock_irqrestore(&priv->lock, flags);
3588
3589         iwl_reset_qos(priv);
3590
3591         iwl4965_post_associate(priv);
3592
3593         mutex_unlock(&priv->mutex);
3594
3595         return 0;
3596 }
3597
3598 /*****************************************************************************
3599  *
3600  * sysfs attributes
3601  *
3602  *****************************************************************************/
3603
3604 #ifdef CONFIG_IWLWIFI_DEBUG
3605
3606 /*
3607  * The following adds a new attribute to the sysfs representation
3608  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3609  * used for controlling the debug level.
3610  *
3611  * See the level definitions in iwl for details.
3612  */
3613
3614 static ssize_t show_debug_level(struct device *d,
3615                                 struct device_attribute *attr, char *buf)
3616 {
3617         struct iwl_priv *priv = d->driver_data;
3618
3619         return sprintf(buf, "0x%08X\n", priv->debug_level);
3620 }
3621 static ssize_t store_debug_level(struct device *d,
3622                                 struct device_attribute *attr,
3623                                  const char *buf, size_t count)
3624 {
3625         struct iwl_priv *priv = d->driver_data;
3626         char *p = (char *)buf;
3627         u32 val;
3628
3629         val = simple_strtoul(p, &p, 0);
3630         if (p == buf)
3631                 printk(KERN_INFO DRV_NAME
3632                        ": %s is not in hex or decimal form.\n", buf);
3633         else
3634                 priv->debug_level = val;
3635
3636         return strnlen(buf, count);
3637 }
3638
3639 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3640                         show_debug_level, store_debug_level);
3641
3642
3643 #endif /* CONFIG_IWLWIFI_DEBUG */
3644
3645
3646 static ssize_t show_version(struct device *d,
3647                                 struct device_attribute *attr, char *buf)
3648 {
3649         struct iwl_priv *priv = d->driver_data;
3650         struct iwl_alive_resp *palive = &priv->card_alive;
3651         ssize_t pos = 0;
3652         u16 eeprom_ver;
3653
3654         if (palive->is_valid)
3655                 pos += sprintf(buf + pos,
3656                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3657                                 "fw type: 0x%01X 0x%01X\n",
3658                                 palive->ucode_major, palive->ucode_minor,
3659                                 palive->sw_rev[0], palive->sw_rev[1],
3660                                 palive->ver_type, palive->ver_subtype);
3661         else
3662                 pos += sprintf(buf + pos, "fw not loaded\n");
3663
3664         if (priv->eeprom) {
3665                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3666                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3667                                  eeprom_ver);
3668         } else {
3669                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3670         }
3671
3672         return pos;
3673 }
3674
3675 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3676
3677 static ssize_t show_temperature(struct device *d,
3678                                 struct device_attribute *attr, char *buf)
3679 {
3680         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3681
3682         if (!iwl_is_alive(priv))
3683                 return -EAGAIN;
3684
3685         return sprintf(buf, "%d\n", priv->temperature);
3686 }
3687
3688 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3689
3690 static ssize_t show_rs_window(struct device *d,
3691                               struct device_attribute *attr,
3692                               char *buf)
3693 {
3694         struct iwl_priv *priv = d->driver_data;
3695         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3696 }
3697 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3698
3699 static ssize_t show_tx_power(struct device *d,
3700                              struct device_attribute *attr, char *buf)
3701 {
3702         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3703         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3704 }
3705
3706 static ssize_t store_tx_power(struct device *d,
3707                               struct device_attribute *attr,
3708                               const char *buf, size_t count)
3709 {
3710         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3711         char *p = (char *)buf;
3712         u32 val;
3713
3714         val = simple_strtoul(p, &p, 10);
3715         if (p == buf)
3716                 printk(KERN_INFO DRV_NAME
3717                        ": %s is not in decimal form.\n", buf);
3718         else
3719                 iwl_set_tx_power(priv, val, false);
3720
3721         return count;
3722 }
3723
3724 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3725
3726 static ssize_t show_flags(struct device *d,
3727                           struct device_attribute *attr, char *buf)
3728 {
3729         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3730
3731         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3732 }
3733
3734 static ssize_t store_flags(struct device *d,
3735                            struct device_attribute *attr,
3736                            const char *buf, size_t count)
3737 {
3738         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3739         u32 flags = simple_strtoul(buf, NULL, 0);
3740
3741         mutex_lock(&priv->mutex);
3742         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3743                 /* Cancel any currently running scans... */
3744                 if (iwl_scan_cancel_timeout(priv, 100))
3745                         IWL_WARNING("Could not cancel scan.\n");
3746                 else {
3747                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3748                                        flags);
3749                         priv->staging_rxon.flags = cpu_to_le32(flags);
3750                         iwl4965_commit_rxon(priv);
3751                 }
3752         }
3753         mutex_unlock(&priv->mutex);
3754
3755         return count;
3756 }
3757
3758 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3759
3760 static ssize_t show_filter_flags(struct device *d,
3761                                  struct device_attribute *attr, char *buf)
3762 {
3763         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3764
3765         return sprintf(buf, "0x%04X\n",
3766                 le32_to_cpu(priv->active_rxon.filter_flags));
3767 }
3768
3769 static ssize_t store_filter_flags(struct device *d,
3770                                   struct device_attribute *attr,
3771                                   const char *buf, size_t count)
3772 {
3773         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3774         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3775
3776         mutex_lock(&priv->mutex);
3777         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3778                 /* Cancel any currently running scans... */
3779                 if (iwl_scan_cancel_timeout(priv, 100))
3780                         IWL_WARNING("Could not cancel scan.\n");
3781                 else {
3782                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3783                                        "0x%04X\n", filter_flags);
3784                         priv->staging_rxon.filter_flags =
3785                                 cpu_to_le32(filter_flags);
3786                         iwl4965_commit_rxon(priv);
3787                 }
3788         }
3789         mutex_unlock(&priv->mutex);
3790
3791         return count;
3792 }
3793
3794 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3795                    store_filter_flags);
3796
3797 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3798
3799 static ssize_t show_measurement(struct device *d,
3800                                 struct device_attribute *attr, char *buf)
3801 {
3802         struct iwl_priv *priv = dev_get_drvdata(d);
3803         struct iwl4965_spectrum_notification measure_report;
3804         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3805         u8 *data = (u8 *) & measure_report;
3806         unsigned long flags;
3807
3808         spin_lock_irqsave(&priv->lock, flags);
3809         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3810                 spin_unlock_irqrestore(&priv->lock, flags);
3811                 return 0;
3812         }
3813         memcpy(&measure_report, &priv->measure_report, size);
3814         priv->measurement_status = 0;
3815         spin_unlock_irqrestore(&priv->lock, flags);
3816
3817         while (size && (PAGE_SIZE - len)) {
3818                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3819                                    PAGE_SIZE - len, 1);
3820                 len = strlen(buf);
3821                 if (PAGE_SIZE - len)
3822                         buf[len++] = '\n';
3823
3824                 ofs += 16;
3825                 size -= min(size, 16U);
3826         }
3827
3828         return len;
3829 }
3830
3831 static ssize_t store_measurement(struct device *d,
3832                                  struct device_attribute *attr,
3833                                  const char *buf, size_t count)
3834 {
3835         struct iwl_priv *priv = dev_get_drvdata(d);
3836         struct ieee80211_measurement_params params = {
3837                 .channel = le16_to_cpu(priv->active_rxon.channel),
3838                 .start_time = cpu_to_le64(priv->last_tsf),
3839                 .duration = cpu_to_le16(1),
3840         };
3841         u8 type = IWL_MEASURE_BASIC;
3842         u8 buffer[32];
3843         u8 channel;
3844
3845         if (count) {
3846                 char *p = buffer;
3847                 strncpy(buffer, buf, min(sizeof(buffer), count));
3848                 channel = simple_strtoul(p, NULL, 0);
3849                 if (channel)
3850                         params.channel = channel;
3851
3852                 p = buffer;
3853                 while (*p && *p != ' ')
3854                         p++;
3855                 if (*p)
3856                         type = simple_strtoul(p + 1, NULL, 0);
3857         }
3858
3859         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3860                        "channel %d (for '%s')\n", type, params.channel, buf);
3861         iwl4965_get_measurement(priv, &params, type);
3862
3863         return count;
3864 }
3865
3866 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3867                    show_measurement, store_measurement);
3868 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3869
3870 static ssize_t store_retry_rate(struct device *d,
3871                                 struct device_attribute *attr,
3872                                 const char *buf, size_t count)
3873 {
3874         struct iwl_priv *priv = dev_get_drvdata(d);
3875
3876         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3877         if (priv->retry_rate <= 0)
3878                 priv->retry_rate = 1;
3879
3880         return count;
3881 }
3882
3883 static ssize_t show_retry_rate(struct device *d,
3884                                struct device_attribute *attr, char *buf)
3885 {
3886         struct iwl_priv *priv = dev_get_drvdata(d);
3887         return sprintf(buf, "%d", priv->retry_rate);
3888 }
3889
3890 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3891                    store_retry_rate);
3892
3893 static ssize_t store_power_level(struct device *d,
3894                                  struct device_attribute *attr,
3895                                  const char *buf, size_t count)
3896 {
3897         struct iwl_priv *priv = dev_get_drvdata(d);
3898         int ret;
3899         int mode;
3900
3901         mode = simple_strtoul(buf, NULL, 0);
3902         mutex_lock(&priv->mutex);
3903
3904         if (!iwl_is_ready(priv)) {
3905                 ret = -EAGAIN;
3906                 goto out;
3907         }
3908
3909         ret = iwl_power_set_user_mode(priv, mode);
3910         if (ret) {
3911                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3912                 goto out;
3913         }
3914         ret = count;
3915
3916  out:
3917         mutex_unlock(&priv->mutex);
3918         return ret;
3919 }
3920
3921 static ssize_t show_power_level(struct device *d,
3922                                 struct device_attribute *attr, char *buf)
3923 {
3924         struct iwl_priv *priv = dev_get_drvdata(d);
3925         int mode = priv->power_data.user_power_setting;
3926         int system = priv->power_data.system_power_setting;
3927         int level = priv->power_data.power_mode;
3928         char *p = buf;
3929
3930         switch (system) {
3931         case IWL_POWER_SYS_AUTO:
3932                 p += sprintf(p, "SYSTEM:auto");
3933                 break;
3934         case IWL_POWER_SYS_AC:
3935                 p += sprintf(p, "SYSTEM:ac");
3936                 break;
3937         case IWL_POWER_SYS_BATTERY:
3938                 p += sprintf(p, "SYSTEM:battery");
3939                 break;
3940         }
3941
3942         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3943         p += sprintf(p, "\tINDEX:%d", level);
3944         p += sprintf(p, "\n");
3945         return (p - buf + 1);
3946 }
3947
3948 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3949                    store_power_level);
3950
3951 static ssize_t show_channels(struct device *d,
3952                              struct device_attribute *attr, char *buf)
3953 {
3954
3955         struct iwl_priv *priv = dev_get_drvdata(d);
3956         struct ieee80211_channel *channels = NULL;
3957         const struct ieee80211_supported_band *supp_band = NULL;
3958         int len = 0, i;
3959         int count = 0;
3960
3961         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3962                 return -EAGAIN;
3963
3964         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3965         channels = supp_band->channels;
3966         count = supp_band->n_channels;
3967
3968         len += sprintf(&buf[len],
3969                         "Displaying %d channels in 2.4GHz band "
3970                         "(802.11bg):\n", count);
3971
3972         for (i = 0; i < count; i++)
3973                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3974                                 ieee80211_frequency_to_channel(
3975                                 channels[i].center_freq),
3976                                 channels[i].max_power,
3977                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3978                                 " (IEEE 802.11h required)" : "",
3979                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3980                                 || (channels[i].flags &
3981                                 IEEE80211_CHAN_RADAR)) ? "" :
3982                                 ", IBSS",
3983                                 channels[i].flags &
3984                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3985                                 "passive only" : "active/passive");
3986
3987         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3988         channels = supp_band->channels;
3989         count = supp_band->n_channels;
3990
3991         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3992                         "(802.11a):\n", count);
3993
3994         for (i = 0; i < count; i++)
3995                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3996                                 ieee80211_frequency_to_channel(
3997                                 channels[i].center_freq),
3998                                 channels[i].max_power,
3999                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
4000                                 " (IEEE 802.11h required)" : "",
4001                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4002                                 || (channels[i].flags &
4003                                 IEEE80211_CHAN_RADAR)) ? "" :
4004                                 ", IBSS",
4005                                 channels[i].flags &
4006                                 IEEE80211_CHAN_PASSIVE_SCAN ?
4007                                 "passive only" : "active/passive");
4008
4009         return len;
4010 }
4011
4012 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4013
4014 static ssize_t show_statistics(struct device *d,
4015                                struct device_attribute *attr, char *buf)
4016 {
4017         struct iwl_priv *priv = dev_get_drvdata(d);
4018         u32 size = sizeof(struct iwl_notif_statistics);
4019         u32 len = 0, ofs = 0;
4020         u8 *data = (u8 *) & priv->statistics;
4021         int rc = 0;
4022
4023         if (!iwl_is_alive(priv))
4024                 return -EAGAIN;
4025
4026         mutex_lock(&priv->mutex);
4027         rc = iwl_send_statistics_request(priv, 0);
4028         mutex_unlock(&priv->mutex);
4029
4030         if (rc) {
4031                 len = sprintf(buf,
4032                               "Error sending statistics request: 0x%08X\n", rc);
4033                 return len;
4034         }
4035
4036         while (size && (PAGE_SIZE - len)) {
4037                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4038                                    PAGE_SIZE - len, 1);
4039                 len = strlen(buf);
4040                 if (PAGE_SIZE - len)
4041                         buf[len++] = '\n';
4042
4043                 ofs += 16;
4044                 size -= min(size, 16U);
4045         }
4046
4047         return len;
4048 }
4049
4050 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4051
4052 static ssize_t show_status(struct device *d,
4053                            struct device_attribute *attr, char *buf)
4054 {
4055         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4056         if (!iwl_is_alive(priv))
4057                 return -EAGAIN;
4058         return sprintf(buf, "0x%08x\n", (int)priv->status);
4059 }
4060
4061 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4062
4063 /*****************************************************************************
4064  *
4065  * driver setup and teardown
4066  *
4067  *****************************************************************************/
4068
4069 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4070 {
4071         priv->workqueue = create_workqueue(DRV_NAME);
4072
4073         init_waitqueue_head(&priv->wait_command_queue);
4074
4075         INIT_WORK(&priv->up, iwl4965_bg_up);
4076         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4077         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4078         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4079         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4080         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4081         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4082         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4083         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4084
4085         /* FIXME : remove when resolved PENDING */
4086         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4087         iwl_setup_scan_deferred_work(priv);
4088
4089         if (priv->cfg->ops->lib->setup_deferred_work)
4090                 priv->cfg->ops->lib->setup_deferred_work(priv);
4091
4092         init_timer(&priv->statistics_periodic);
4093         priv->statistics_periodic.data = (unsigned long)priv;
4094         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4095
4096         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4097                      iwl4965_irq_tasklet, (unsigned long)priv);
4098 }
4099
4100 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4101 {
4102         if (priv->cfg->ops->lib->cancel_deferred_work)
4103                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4104
4105         cancel_delayed_work_sync(&priv->init_alive_start);
4106         cancel_delayed_work(&priv->scan_check);
4107         cancel_delayed_work(&priv->alive_start);
4108         cancel_work_sync(&priv->beacon_update);
4109         del_timer_sync(&priv->statistics_periodic);
4110 }
4111
4112 static struct attribute *iwl4965_sysfs_entries[] = {
4113         &dev_attr_channels.attr,
4114         &dev_attr_flags.attr,
4115         &dev_attr_filter_flags.attr,
4116 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4117         &dev_attr_measurement.attr,
4118 #endif
4119         &dev_attr_power_level.attr,
4120         &dev_attr_retry_rate.attr,
4121         &dev_attr_rs_window.attr,
4122         &dev_attr_statistics.attr,
4123         &dev_attr_status.attr,
4124         &dev_attr_temperature.attr,
4125         &dev_attr_tx_power.attr,
4126 #ifdef CONFIG_IWLWIFI_DEBUG
4127         &dev_attr_debug_level.attr,
4128 #endif
4129         &dev_attr_version.attr,
4130
4131         NULL
4132 };
4133
4134 static struct attribute_group iwl4965_attribute_group = {
4135         .name = NULL,           /* put in device directory */
4136         .attrs = iwl4965_sysfs_entries,
4137 };
4138
4139 static struct ieee80211_ops iwl4965_hw_ops = {
4140         .tx = iwl4965_mac_tx,
4141         .start = iwl4965_mac_start,
4142         .stop = iwl4965_mac_stop,
4143         .add_interface = iwl4965_mac_add_interface,
4144         .remove_interface = iwl4965_mac_remove_interface,
4145         .config = iwl4965_mac_config,
4146         .config_interface = iwl4965_mac_config_interface,
4147         .configure_filter = iwl4965_configure_filter,
4148         .set_key = iwl4965_mac_set_key,
4149         .update_tkip_key = iwl4965_mac_update_tkip_key,
4150         .get_stats = iwl4965_mac_get_stats,
4151         .get_tx_stats = iwl4965_mac_get_tx_stats,
4152         .conf_tx = iwl4965_mac_conf_tx,
4153         .reset_tsf = iwl4965_mac_reset_tsf,
4154         .bss_info_changed = iwl4965_bss_info_changed,
4155         .ampdu_action = iwl4965_mac_ampdu_action,
4156         .hw_scan = iwl4965_mac_hw_scan
4157 };
4158
4159 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4160 {
4161         int err = 0;
4162         struct iwl_priv *priv;
4163         struct ieee80211_hw *hw;
4164         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4165         unsigned long flags;
4166         DECLARE_MAC_BUF(mac);
4167
4168         /************************
4169          * 1. Allocating HW data
4170          ************************/
4171
4172         /* Disabling hardware scan means that mac80211 will perform scans
4173          * "the hard way", rather than using device's scan. */
4174         if (cfg->mod_params->disable_hw_scan) {
4175                 if (cfg->mod_params->debug & IWL_DL_INFO)
4176                         dev_printk(KERN_DEBUG, &(pdev->dev),
4177                                    "Disabling hw_scan\n");
4178                 iwl4965_hw_ops.hw_scan = NULL;
4179         }
4180
4181         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4182         if (!hw) {
4183                 err = -ENOMEM;
4184                 goto out;
4185         }
4186         priv = hw->priv;
4187         /* At this point both hw and priv are allocated. */
4188
4189         SET_IEEE80211_DEV(hw, &pdev->dev);
4190
4191         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4192         priv->cfg = cfg;
4193         priv->pci_dev = pdev;
4194
4195 #ifdef CONFIG_IWLWIFI_DEBUG
4196         priv->debug_level = priv->cfg->mod_params->debug;
4197         atomic_set(&priv->restrict_refcnt, 0);
4198 #endif
4199
4200         /**************************
4201          * 2. Initializing PCI bus
4202          **************************/
4203         if (pci_enable_device(pdev)) {
4204                 err = -ENODEV;
4205                 goto out_ieee80211_free_hw;
4206         }
4207
4208         pci_set_master(pdev);
4209
4210         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4211         if (!err)
4212                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4213         if (err) {
4214                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4215                 if (!err)
4216                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4217                 /* both attempts failed: */
4218                 if (err) {
4219                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4220                                 DRV_NAME);
4221                         goto out_pci_disable_device;
4222                 }
4223         }
4224
4225         err = pci_request_regions(pdev, DRV_NAME);
4226         if (err)
4227                 goto out_pci_disable_device;
4228
4229         pci_set_drvdata(pdev, priv);
4230
4231         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4232          * PCI Tx retries from interfering with C3 CPU state */
4233         pci_write_config_byte(pdev, 0x41, 0x00);
4234
4235         /***********************
4236          * 3. Read REV register
4237          ***********************/
4238         priv->hw_base = pci_iomap(pdev, 0, 0);
4239         if (!priv->hw_base) {
4240                 err = -ENODEV;
4241                 goto out_pci_release_regions;
4242         }
4243
4244         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4245                 (unsigned long long) pci_resource_len(pdev, 0));
4246         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4247
4248         iwl_hw_detect(priv);
4249         printk(KERN_INFO DRV_NAME
4250                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4251                 priv->cfg->name, priv->hw_rev);
4252
4253         /* amp init */
4254         err = priv->cfg->ops->lib->apm_ops.init(priv);
4255         if (err < 0) {
4256                 IWL_DEBUG_INFO("Failed to init APMG\n");
4257                 goto out_iounmap;
4258         }
4259         /*****************
4260          * 4. Read EEPROM
4261          *****************/
4262         /* Read the EEPROM */
4263         err = iwl_eeprom_init(priv);
4264         if (err) {
4265                 IWL_ERROR("Unable to init EEPROM\n");
4266                 goto out_iounmap;
4267         }
4268         err = iwl_eeprom_check_version(priv);
4269         if (err)
4270                 goto out_iounmap;
4271
4272         /* extract MAC Address */
4273         iwl_eeprom_get_mac(priv, priv->mac_addr);
4274         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4275         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4276
4277         /************************
4278          * 5. Setup HW constants
4279          ************************/
4280         if (iwl_set_hw_params(priv)) {
4281                 IWL_ERROR("failed to set hw parameters\n");
4282                 goto out_free_eeprom;
4283         }
4284
4285         /*******************
4286          * 6. Setup priv
4287          *******************/
4288
4289         err = iwl_init_drv(priv);
4290         if (err)
4291                 goto out_free_eeprom;
4292         /* At this point both hw and priv are initialized. */
4293
4294         /**********************************
4295          * 7. Initialize module parameters
4296          **********************************/
4297
4298         /* Disable radio (SW RF KILL) via parameter when loading driver */
4299         if (priv->cfg->mod_params->disable) {
4300                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4301                 IWL_DEBUG_INFO("Radio disabled.\n");
4302         }
4303
4304         /********************
4305          * 8. Setup services
4306          ********************/
4307         spin_lock_irqsave(&priv->lock, flags);
4308         iwl4965_disable_interrupts(priv);
4309         spin_unlock_irqrestore(&priv->lock, flags);
4310
4311         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4312         if (err) {
4313                 IWL_ERROR("failed to create sysfs device attributes\n");
4314                 goto out_uninit_drv;
4315         }
4316
4317
4318         iwl_setup_deferred_work(priv);
4319         iwl_setup_rx_handlers(priv);
4320
4321         /********************
4322          * 9. Conclude
4323          ********************/
4324         pci_save_state(pdev);
4325         pci_disable_device(pdev);
4326
4327         /**********************************
4328          * 10. Setup and register mac80211
4329          **********************************/
4330
4331         err = iwl_setup_mac(priv);
4332         if (err)
4333                 goto out_remove_sysfs;
4334
4335         err = iwl_dbgfs_register(priv, DRV_NAME);
4336         if (err)
4337                 IWL_ERROR("failed to create debugfs files\n");
4338
4339         err = iwl_rfkill_init(priv);
4340         if (err)
4341                 IWL_ERROR("Unable to initialize RFKILL system. "
4342                                   "Ignoring error: %d\n", err);
4343         iwl_power_initialize(priv);
4344         return 0;
4345
4346  out_remove_sysfs:
4347         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4348  out_uninit_drv:
4349         iwl_uninit_drv(priv);
4350  out_free_eeprom:
4351         iwl_eeprom_free(priv);
4352  out_iounmap:
4353         pci_iounmap(pdev, priv->hw_base);
4354  out_pci_release_regions:
4355         pci_release_regions(pdev);
4356         pci_set_drvdata(pdev, NULL);
4357  out_pci_disable_device:
4358         pci_disable_device(pdev);
4359  out_ieee80211_free_hw:
4360         ieee80211_free_hw(priv->hw);
4361  out:
4362         return err;
4363 }
4364
4365 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4366 {
4367         struct iwl_priv *priv = pci_get_drvdata(pdev);
4368         unsigned long flags;
4369
4370         if (!priv)
4371                 return;
4372
4373         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4374
4375         iwl_dbgfs_unregister(priv);
4376         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4377
4378         if (priv->mac80211_registered) {
4379                 ieee80211_unregister_hw(priv->hw);
4380                 priv->mac80211_registered = 0;
4381         }
4382
4383         set_bit(STATUS_EXIT_PENDING, &priv->status);
4384
4385         iwl4965_down(priv);
4386
4387         /* make sure we flush any pending irq or
4388          * tasklet for the driver
4389          */
4390         spin_lock_irqsave(&priv->lock, flags);
4391         iwl4965_disable_interrupts(priv);
4392         spin_unlock_irqrestore(&priv->lock, flags);
4393
4394         iwl_synchronize_irq(priv);
4395
4396         iwl_rfkill_unregister(priv);
4397         iwl4965_dealloc_ucode_pci(priv);
4398
4399         if (priv->rxq.bd)
4400                 iwl_rx_queue_free(priv, &priv->rxq);
4401         iwl_hw_txq_ctx_free(priv);
4402
4403         iwl_clear_stations_table(priv);
4404         iwl_eeprom_free(priv);
4405
4406
4407         /*netif_stop_queue(dev); */
4408         flush_workqueue(priv->workqueue);
4409
4410         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4411          * priv->workqueue... so we can't take down the workqueue
4412          * until now... */
4413         destroy_workqueue(priv->workqueue);
4414         priv->workqueue = NULL;
4415
4416         pci_iounmap(pdev, priv->hw_base);
4417         pci_release_regions(pdev);
4418         pci_disable_device(pdev);
4419         pci_set_drvdata(pdev, NULL);
4420
4421         iwl_uninit_drv(priv);
4422
4423         if (priv->ibss_beacon)
4424                 dev_kfree_skb(priv->ibss_beacon);
4425
4426         ieee80211_free_hw(priv->hw);
4427 }
4428
4429 #ifdef CONFIG_PM
4430
4431 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4432 {
4433         struct iwl_priv *priv = pci_get_drvdata(pdev);
4434
4435         if (priv->is_open) {
4436                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4437                 iwl4965_mac_stop(priv->hw);
4438                 priv->is_open = 1;
4439         }
4440
4441         pci_set_power_state(pdev, PCI_D3hot);
4442
4443         return 0;
4444 }
4445
4446 static int iwl4965_pci_resume(struct pci_dev *pdev)
4447 {
4448         struct iwl_priv *priv = pci_get_drvdata(pdev);
4449
4450         pci_set_power_state(pdev, PCI_D0);
4451
4452         if (priv->is_open)
4453                 iwl4965_mac_start(priv->hw);
4454
4455         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4456         return 0;
4457 }
4458
4459 #endif /* CONFIG_PM */
4460
4461 /*****************************************************************************
4462  *
4463  * driver and module entry point
4464  *
4465  *****************************************************************************/
4466
4467 /* Hardware specific file defines the PCI IDs table for that hardware module */
4468 static struct pci_device_id iwl_hw_card_ids[] = {
4469         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4470         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4471 #ifdef CONFIG_IWL5000
4472         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4473         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4474         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4475         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4476         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4477         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4478         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4479         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4480         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4481         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4482         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4483 #endif /* CONFIG_IWL5000 */
4484         {0}
4485 };
4486 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4487
4488 static struct pci_driver iwl_driver = {
4489         .name = DRV_NAME,
4490         .id_table = iwl_hw_card_ids,
4491         .probe = iwl4965_pci_probe,
4492         .remove = __devexit_p(iwl4965_pci_remove),
4493 #ifdef CONFIG_PM
4494         .suspend = iwl4965_pci_suspend,
4495         .resume = iwl4965_pci_resume,
4496 #endif
4497 };
4498
4499 static int __init iwl4965_init(void)
4500 {
4501
4502         int ret;
4503         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4504         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4505
4506         ret = iwl4965_rate_control_register();
4507         if (ret) {
4508                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4509                 return ret;
4510         }
4511
4512         ret = pci_register_driver(&iwl_driver);
4513         if (ret) {
4514                 IWL_ERROR("Unable to initialize PCI module\n");
4515                 goto error_register;
4516         }
4517
4518         return ret;
4519
4520 error_register:
4521         iwl4965_rate_control_unregister();
4522         return ret;
4523 }
4524
4525 static void __exit iwl4965_exit(void)
4526 {
4527         pci_unregister_driver(&iwl_driver);
4528         iwl4965_rate_control_unregister();
4529 }
4530
4531 module_exit(iwl4965_exit);
4532 module_init(iwl4965_init);