SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-agn.c

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