git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN 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
 254         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 255         if (ret) {
 256                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 257                 return -EINVAL;
 258         }
 259
 260         /* If we don't need to send a full RXON, we can use
 261          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 262          * and other flags for the current radio configuration. */
 263         if (!iwl4965_full_rxon_required(priv)) {
 264                 ret = iwl_send_rxon_assoc(priv);
 265                 if (ret) {
 266                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 267                         return ret;
 268                 }
 269
 270                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 271                 return 0;
 272         }
 273
 274         /* station table will be cleared */
 275         priv->assoc_station_added = 0;
 276
 277         /* If we are currently associated and the new config requires
 278          * an RXON_ASSOC and the new config wants the associated mask enabled,
 279          * we must clear the associated from the active configuration
 280          * before we apply the new config */
 281         if (iwl_is_associated(priv) && new_assoc) {
 282                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 283                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 284
 285                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 286                                       sizeof(struct iwl_rxon_cmd),
 287                                       &priv->active_rxon);
 288
 289                 /* If the mask clearing failed then we set
 290                  * active_rxon back to what it was previously */
 291                 if (ret) {
 292                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 293                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 294                         return ret;
 295                 }
 296         }
 297
 298         IWL_DEBUG_INFO("Sending RXON\n"
 299                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 300                        "* channel = %d\n"
 301                        "* bssid = %s\n",
 302                        (new_assoc ? "" : "out"),
 303                        le16_to_cpu(priv->staging_rxon.channel),
 304                        print_mac(mac, priv->staging_rxon.bssid_addr));
 305
 306         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 307
 308         /* Apply the new configuration
 309          * RXON unassoc clears the station table in uCode, send it before
 310          * we add the bcast station. If assoc bit is set, we will send RXON
 311          * after having added the bcast and bssid station.
 312          */
 313         if (!new_assoc) {
 314                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 315                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 316                 if (ret) {
 317                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 318                         return ret;
 319                 }
 320                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 321         }
 322
 323         iwl_clear_stations_table(priv);
 324
 325         if (!priv->error_recovering)
 326                 priv->start_calib = 0;
 327
 328         iwl_init_sensitivity(priv);
 329
 330         /* If we issue a new RXON command which required a tune then we must
 331          * send a new TXPOWER command or we won't be able to Tx any frames */
 332         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 333         if (ret) {
 334                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 335                 return ret;
 336         }
 337
 338         /* Add the broadcast address so we can send broadcast frames */
 339         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 340                                                 IWL_INVALID_STATION) {
 341                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 342                 return -EIO;
 343         }
 344
 345         /* If we have set the ASSOC_MSK and we are in BSS mode then
 346          * add the IWL_AP_ID to the station rate table */
 347         if (new_assoc) {
 348                 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 349                         ret = iwl_rxon_add_station(priv,
 350                                            priv->active_rxon.bssid_addr, 1);
 351                         if (ret == IWL_INVALID_STATION) {
 352                                 IWL_ERROR("Error adding AP address for TX.\n");
 353                                 return -EIO;
 354                         }
 355                         priv->assoc_station_added = 1;
 356                         if (priv->default_wep_key &&
 357                             iwl_send_static_wepkey_cmd(priv, 0))
 358                                 IWL_ERROR("Could not send WEP static key.\n");
 359                 }
 360
 361                 /* Apply the new configuration
 362                  * RXON assoc doesn't clear the station table in uCode,
 363                  */
 364                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 365                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 366                 if (ret) {
 367                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 368                         return ret;
 369                 }
 370                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 371         }
 372
 373         return 0;
 374 }
 375
 376 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 377 {
 378
 379         iwl_set_rxon_chain(priv);
 380         iwl4965_commit_rxon(priv);
 381 }
 382
 383 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 384 {
 385         struct iwl4965_bt_cmd bt_cmd = {
 386                 .flags = 3,
 387                 .lead_time = 0xAA,
 388                 .max_kill = 1,
 389                 .kill_ack_mask = 0,
 390                 .kill_cts_mask = 0,
 391         };
 392
 393         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 394                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 395 }
 396
 397 static void iwl_clear_free_frames(struct iwl_priv *priv)
 398 {
 399         struct list_head *element;
 400
 401         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 402                        priv->frames_count);
 403
 404         while (!list_empty(&priv->free_frames)) {
 405                 element = priv->free_frames.next;
 406                 list_del(element);
 407                 kfree(list_entry(element, struct iwl_frame, list));
 408                 priv->frames_count--;
 409         }
 410
 411         if (priv->frames_count) {
 412                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 413                             priv->frames_count);
 414                 priv->frames_count = 0;
 415         }
 416 }
 417
 418 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 419 {
 420         struct iwl_frame *frame;
 421         struct list_head *element;
 422         if (list_empty(&priv->free_frames)) {
 423                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 424                 if (!frame) {
 425                         IWL_ERROR("Could not allocate frame!\n");
 426                         return NULL;
 427                 }
 428
 429                 priv->frames_count++;
 430                 return frame;
 431         }
 432
 433         element = priv->free_frames.next;
 434         list_del(element);
 435         return list_entry(element, struct iwl_frame, list);
 436 }
 437
 438 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 439 {
 440         memset(frame, 0, sizeof(*frame));
 441         list_add(&frame->list, &priv->free_frames);
 442 }
 443
 444 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 445                                 struct ieee80211_hdr *hdr,
 446                                 const u8 *dest, int left)
 447 {
 448
 449         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 450             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 451              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 452                 return 0;
 453
 454         if (priv->ibss_beacon->len > left)
 455                 return 0;
 456
 457         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 458
 459         return priv->ibss_beacon->len;
 460 }
 461
 462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 463 {
 464         int i;
 465         int rate_mask;
 466
 467         /* Set rate mask*/
 468         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 469                 rate_mask = priv->active_rate_basic & 0xF;
 470         else
 471                 rate_mask = priv->active_rate_basic & 0xFF0;
 472
 473         /* Find lowest valid rate */
 474         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 475                                         i = iwl_rates[i].next_ieee) {
 476                 if (rate_mask & (1 << i))
 477                         return iwl_rates[i].plcp;
 478         }
 479
 480         /* No valid rate was found. Assign the lowest one */
 481         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 482                 return IWL_RATE_1M_PLCP;
 483         else
 484                 return IWL_RATE_6M_PLCP;
 485 }
 486
 487 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 488 {
 489         struct iwl_frame *frame;
 490         unsigned int frame_size;
 491         int rc;
 492         u8 rate;
 493
 494         frame = iwl_get_free_frame(priv);
 495
 496         if (!frame) {
 497                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 498                           "command.\n");
 499                 return -ENOMEM;
 500         }
 501
 502         rate = iwl4965_rate_get_lowest_plcp(priv);
 503
 504         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 505
 506         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 507                               &frame->u.cmd[0]);
 508
 509         iwl_free_frame(priv, frame);
 510
 511         return rc;
 512 }
 513
 514 /******************************************************************************
 515  *
 516  * Misc. internal state and helper functions
 517  *
 518  ******************************************************************************/
 519
 520 static void iwl4965_ht_conf(struct iwl_priv *priv,
 521                             struct ieee80211_bss_conf *bss_conf)
 522 {
 523         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 524         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 525         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 526
 527         IWL_DEBUG_MAC80211("enter: \n");
 528
 529         iwl_conf->is_ht = bss_conf->assoc_ht;
 530
 531         if (!iwl_conf->is_ht)
 532                 return;
 533
 534         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 535
 536         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 537                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 538         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 539                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 540
 541         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 542         iwl_conf->max_amsdu_size =
 543                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 544
 545         iwl_conf->supported_chan_width =
 546                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 547         iwl_conf->extension_chan_offset =
 548                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 549         /* If no above or below channel supplied disable FAT channel */
 550         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 551             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 552                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 553                 iwl_conf->supported_chan_width = 0;
 554         }
 555
 556         iwl_conf->tx_mimo_ps_mode =
 557                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 558         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 559
 560         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 561         iwl_conf->tx_chan_width =
 562                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 563         iwl_conf->ht_protection =
 564                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 565         iwl_conf->non_GF_STA_present =
 566                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 567
 568         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 569         IWL_DEBUG_MAC80211("leave\n");
 570 }
 571
 572 /*
 573  * QoS  support
 574 */
 575 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 576                                        struct iwl4965_qosparam_cmd *qos)
 577 {
 578
 579         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 580                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 581 }
 582
 583 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 584 {
 585         unsigned long flags;
 586
 587         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 588                 return;
 589
 590         if (!priv->qos_data.qos_enable)
 591                 return;
 592
 593         spin_lock_irqsave(&priv->lock, flags);
 594         priv->qos_data.def_qos_parm.qos_flags = 0;
 595
 596         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 597             !priv->qos_data.qos_cap.q_AP.txop_request)
 598                 priv->qos_data.def_qos_parm.qos_flags |=
 599                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 600         if (priv->qos_data.qos_active)
 601                 priv->qos_data.def_qos_parm.qos_flags |=
 602                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 603
 604         if (priv->current_ht_config.is_ht)
 605                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 606
 607         spin_unlock_irqrestore(&priv->lock, flags);
 608
 609         if (force || iwl_is_associated(priv)) {
 610                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 611                                 priv->qos_data.qos_active,
 612                                 priv->qos_data.def_qos_parm.qos_flags);
 613
 614                 iwl4965_send_qos_params_command(priv,
 615                                 &(priv->qos_data.def_qos_parm));
 616         }
 617 }
 618
 619 #define MAX_UCODE_BEACON_INTERVAL       4096
 620 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 621
 622 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 623 {
 624         u16 new_val = 0;
 625         u16 beacon_factor = 0;
 626
 627         beacon_factor =
 628             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 629                 / MAX_UCODE_BEACON_INTERVAL;
 630         new_val = beacon_val / beacon_factor;
 631
 632         return cpu_to_le16(new_val);
 633 }
 634
 635 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 636 {
 637         u64 interval_tm_unit;
 638         u64 tsf, result;
 639         unsigned long flags;
 640         struct ieee80211_conf *conf = NULL;
 641         u16 beacon_int = 0;
 642
 643         conf = ieee80211_get_hw_conf(priv->hw);
 644
 645         spin_lock_irqsave(&priv->lock, flags);
 646         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 647         priv->rxon_timing.timestamp.dw[0] =
 648                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 649
 650         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 651
 652         tsf = priv->timestamp;
 653
 654         beacon_int = priv->beacon_int;
 655         spin_unlock_irqrestore(&priv->lock, flags);
 656
 657         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 658                 if (beacon_int == 0) {
 659                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 660                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 661                 } else {
 662                         priv->rxon_timing.beacon_interval =
 663                                 cpu_to_le16(beacon_int);
 664                         priv->rxon_timing.beacon_interval =
 665                             iwl4965_adjust_beacon_interval(
 666                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 667                 }
 668
 669                 priv->rxon_timing.atim_window = 0;
 670         } else {
 671                 priv->rxon_timing.beacon_interval =
 672                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 673                 /* TODO: we need to get atim_window from upper stack
 674                  * for now we set to 0 */
 675                 priv->rxon_timing.atim_window = 0;
 676         }
 677
 678         interval_tm_unit =
 679                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 680         result = do_div(tsf, interval_tm_unit);
 681         priv->rxon_timing.beacon_init_val =
 682             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 683
 684         IWL_DEBUG_ASSOC
 685             ("beacon interval %d beacon timer %d beacon tim %d\n",
 686                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 687                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 688                 le16_to_cpu(priv->rxon_timing.atim_window));
 689 }
 690
 691 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 692                                    enum ieee80211_band band)
 693 {
 694         if (band == IEEE80211_BAND_5GHZ) {
 695                 priv->staging_rxon.flags &=
 696                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 697                       | RXON_FLG_CCK_MSK);
 698                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 699         } else {
 700                 /* Copied from iwl4965_post_associate() */
 701                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 702                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 703                 else
 704                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 705
 706                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 707                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 708
 709                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 710                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 711                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 712         }
 713 }
 714
 715 /*
 716  * initialize rxon structure with default values from eeprom
 717  */
 718 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 719 {
 720         const struct iwl_channel_info *ch_info;
 721
 722         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 723
 724         switch (priv->iw_mode) {
 725         case IEEE80211_IF_TYPE_AP:
 726                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 727                 break;
 728
 729         case IEEE80211_IF_TYPE_STA:
 730                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 731                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 732                 break;
 733
 734         case IEEE80211_IF_TYPE_IBSS:
 735                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 736                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 737                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 738                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 739                 break;
 740
 741         case IEEE80211_IF_TYPE_MNTR:
 742                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 743                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 744                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 745                 break;
 746         default:
 747                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 748                 break;
 749         }
 750
 751 #if 0
 752         /* TODO:  Figure out when short_preamble would be set and cache from
 753          * that */
 754         if (!hw_to_local(priv->hw)->short_preamble)
 755                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 756         else
 757                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 758 #endif
 759
 760         ch_info = iwl_get_channel_info(priv, priv->band,
 761                                        le16_to_cpu(priv->active_rxon.channel));
 762
 763         if (!ch_info)
 764                 ch_info = &priv->channel_info[0];
 765
 766         /*
 767          * in some case A channels are all non IBSS
 768          * in this case force B/G channel
 769          */
 770         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 771             !(is_channel_ibss(ch_info)))
 772                 ch_info = &priv->channel_info[0];
 773
 774         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 775         priv->band = ch_info->band;
 776
 777         iwl_set_flags_for_band(priv, priv->band);
 778
 779         priv->staging_rxon.ofdm_basic_rates =
 780             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 781         priv->staging_rxon.cck_basic_rates =
 782             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 783
 784         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 785                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 786         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 787         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 788         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 789         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 790         iwl_set_rxon_chain(priv);
 791 }
 792
 793 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 794 {
 795         priv->iw_mode = mode;
 796
 797         iwl4965_connection_init_rx_config(priv);
 798         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 799
 800         iwl_clear_stations_table(priv);
 801
 802         /* dont commit rxon if rf-kill is on*/
 803         if (!iwl_is_ready_rf(priv))
 804                 return -EAGAIN;
 805
 806         cancel_delayed_work(&priv->scan_check);
 807         if (iwl_scan_cancel_timeout(priv, 100)) {
 808                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 809                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 810                 return -EAGAIN;
 811         }
 812
 813         iwl4965_commit_rxon(priv);
 814
 815         return 0;
 816 }
 817
 818 static void iwl4965_set_rate(struct iwl_priv *priv)
 819 {
 820         const struct ieee80211_supported_band *hw = NULL;
 821         struct ieee80211_rate *rate;
 822         int i;
 823
 824         hw = iwl_get_hw_mode(priv, priv->band);
 825         if (!hw) {
 826                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 827                 return;
 828         }
 829
 830         priv->active_rate = 0;
 831         priv->active_rate_basic = 0;
 832
 833         for (i = 0; i < hw->n_bitrates; i++) {
 834                 rate = &(hw->bitrates[i]);
 835                 if (rate->hw_value < IWL_RATE_COUNT)
 836                         priv->active_rate |= (1 << rate->hw_value);
 837         }
 838
 839         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 840                        priv->active_rate, priv->active_rate_basic);
 841
 842         /*
 843          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 844          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 845          * OFDM
 846          */
 847         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 848                 priv->staging_rxon.cck_basic_rates =
 849                     ((priv->active_rate_basic &
 850                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 851         else
 852                 priv->staging_rxon.cck_basic_rates =
 853                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 854
 855         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 856                 priv->staging_rxon.ofdm_basic_rates =
 857                     ((priv->active_rate_basic &
 858                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 859                       IWL_FIRST_OFDM_RATE) & 0xFF;
 860         else
 861                 priv->staging_rxon.ofdm_basic_rates =
 862                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 863 }
 864
 865 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 866
 867 #include "iwl-spectrum.h"
 868
 869 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 870 #define BEACON_TIME_MASK_HIGH   0xFF000000
 871 #define TIME_UNIT               1024
 872
 873 /*
 874  * extended beacon time format
 875  * time in usec will be changed into a 32-bit value in 8:24 format
 876  * the high 1 byte is the beacon counts
 877  * the lower 3 bytes is the time in usec within one beacon interval
 878  */
 879
 880 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 881 {
 882         u32 quot;
 883         u32 rem;
 884         u32 interval = beacon_interval * 1024;
 885
 886         if (!interval || !usec)
 887                 return 0;
 888
 889         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 890         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 891
 892         return (quot << 24) + rem;
 893 }
 894
 895 /* base is usually what we get from ucode with each received frame,
 896  * the same as HW timer counter counting down
 897  */
 898
 899 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 900 {
 901         u32 base_low = base & BEACON_TIME_MASK_LOW;
 902         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 903         u32 interval = beacon_interval * TIME_UNIT;
 904         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 905             (addon & BEACON_TIME_MASK_HIGH);
 906
 907         if (base_low > addon_low)
 908                 res += base_low - addon_low;
 909         else if (base_low < addon_low) {
 910                 res += interval + base_low - addon_low;
 911                 res += (1 << 24);
 912         } else
 913                 res += (1 << 24);
 914
 915         return cpu_to_le32(res);
 916 }
 917
 918 static int iwl4965_get_measurement(struct iwl_priv *priv,
 919                                struct ieee80211_measurement_params *params,
 920                                u8 type)
 921 {
 922         struct iwl4965_spectrum_cmd spectrum;
 923         struct iwl_rx_packet *res;
 924         struct iwl_host_cmd cmd = {
 925                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 926                 .data = (void *)&spectrum,
 927                 .meta.flags = CMD_WANT_SKB,
 928         };
 929         u32 add_time = le64_to_cpu(params->start_time);
 930         int rc;
 931         int spectrum_resp_status;
 932         int duration = le16_to_cpu(params->duration);
 933
 934         if (iwl_is_associated(priv))
 935                 add_time =
 936                     iwl4965_usecs_to_beacons(
 937                         le64_to_cpu(params->start_time) - priv->last_tsf,
 938                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 939
 940         memset(&spectrum, 0, sizeof(spectrum));
 941
 942         spectrum.channel_count = cpu_to_le16(1);
 943         spectrum.flags =
 944             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 945         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 946         cmd.len = sizeof(spectrum);
 947         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 948
 949         if (iwl_is_associated(priv))
 950                 spectrum.start_time =
 951                     iwl4965_add_beacon_time(priv->last_beacon_time,
 952                                 add_time,
 953                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 954         else
 955                 spectrum.start_time = 0;
 956
 957         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 958         spectrum.channels[0].channel = params->channel;
 959         spectrum.channels[0].type = type;
 960         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 961                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 962                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 963
 964         rc = iwl_send_cmd_sync(priv, &cmd);
 965         if (rc)
 966                 return rc;
 967
 968         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 969         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 970                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 971                 rc = -EIO;
 972         }
 973
 974         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 975         switch (spectrum_resp_status) {
 976         case 0:         /* Command will be handled */
 977                 if (res->u.spectrum.id != 0xff) {
 978                         IWL_DEBUG_INFO
 979                             ("Replaced existing measurement: %d\n",
 980                              res->u.spectrum.id);
 981                         priv->measurement_status &= ~MEASUREMENT_READY;
 982                 }
 983                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 984                 rc = 0;
 985                 break;
 986
 987         case 1:         /* Command will not be handled */
 988                 rc = -EAGAIN;
 989                 break;
 990         }
 991
 992         dev_kfree_skb_any(cmd.meta.u.skb);
 993
 994         return rc;
 995 }
 996 #endif
 997
 998 /******************************************************************************
 999  *
1000  * Generic RX handler implementations
1001  *
1002  ******************************************************************************/
1003 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1004                                 struct iwl_rx_mem_buffer *rxb)
1005 {
1006         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1007         struct iwl_alive_resp *palive;
1008         struct delayed_work *pwork;
1009
1010         palive = &pkt->u.alive_frame;
1011
1012         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1013                        "0x%01X 0x%01X\n",
1014                        palive->is_valid, palive->ver_type,
1015                        palive->ver_subtype);
1016
1017         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1018                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1019                 memcpy(&priv->card_alive_init,
1020                        &pkt->u.alive_frame,
1021                        sizeof(struct iwl_init_alive_resp));
1022                 pwork = &priv->init_alive_start;
1023         } else {
1024                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1025                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1026                        sizeof(struct iwl_alive_resp));
1027                 pwork = &priv->alive_start;
1028         }
1029
1030         /* We delay the ALIVE response by 5ms to
1031          * give the HW RF Kill time to activate... */
1032         if (palive->is_valid == UCODE_VALID_OK)
1033                 queue_delayed_work(priv->workqueue, pwork,
1034                                    msecs_to_jiffies(5));
1035         else
1036                 IWL_WARNING("uCode did not respond OK.\n");
1037 }
1038
1039 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1040                                    struct iwl_rx_mem_buffer *rxb)
1041 {
1042         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1043
1044         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1045                 "seq 0x%04X ser 0x%08X\n",
1046                 le32_to_cpu(pkt->u.err_resp.error_type),
1047                 get_cmd_string(pkt->u.err_resp.cmd_id),
1048                 pkt->u.err_resp.cmd_id,
1049                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1050                 le32_to_cpu(pkt->u.err_resp.error_info));
1051 }
1052
1053 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1054
1055 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1056 {
1057         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1058         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1059         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1060         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1061                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1062         rxon->channel = csa->channel;
1063         priv->staging_rxon.channel = csa->channel;
1064 }
1065
1066 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1067                                           struct iwl_rx_mem_buffer *rxb)
1068 {
1069 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1070         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1071         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1072
1073         if (!report->state) {
1074                 IWL_DEBUG(IWL_DL_11H,
1075                         "Spectrum Measure Notification: Start\n");
1076                 return;
1077         }
1078
1079         memcpy(&priv->measure_report, report, sizeof(*report));
1080         priv->measurement_status |= MEASUREMENT_READY;
1081 #endif
1082 }
1083
1084 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1085                                       struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLWIFI_DEBUG
1088         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1090         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1091                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1096                                              struct iwl_rx_mem_buffer *rxb)
1097 {
1098         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1099         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1100                         "notification for %s:\n",
1101                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1102         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1103 }
1104
1105 static void iwl4965_bg_beacon_update(struct work_struct *work)
1106 {
1107         struct iwl_priv *priv =
1108                 container_of(work, struct iwl_priv, beacon_update);
1109         struct sk_buff *beacon;
1110
1111         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1112         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1113
1114         if (!beacon) {
1115                 IWL_ERROR("update beacon failed\n");
1116                 return;
1117         }
1118
1119         mutex_lock(&priv->mutex);
1120         /* new beacon skb is allocated every time; dispose previous.*/
1121         if (priv->ibss_beacon)
1122                 dev_kfree_skb(priv->ibss_beacon);
1123
1124         priv->ibss_beacon = beacon;
1125         mutex_unlock(&priv->mutex);
1126
1127         iwl4965_send_beacon_cmd(priv);
1128 }
1129
1130 /**
1131  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1132  *
1133  * This callback is provided in order to send a statistics request.
1134  *
1135  * This timer function is continually reset to execute within
1136  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1137  * was received.  We need to ensure we receive the statistics in order
1138  * to update the temperature used for calibrating the TXPOWER.
1139  */
1140 static void iwl4965_bg_statistics_periodic(unsigned long data)
1141 {
1142         struct iwl_priv *priv = (struct iwl_priv *)data;
1143
1144         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1145                 return;
1146
1147         iwl_send_statistics_request(priv, CMD_ASYNC);
1148 }
1149
1150 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1151                                 struct iwl_rx_mem_buffer *rxb)
1152 {
1153 #ifdef CONFIG_IWLWIFI_DEBUG
1154         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1155         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1156         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1157
1158         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1159                 "tsf %d %d rate %d\n",
1160                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1161                 beacon->beacon_notify_hdr.failure_frame,
1162                 le32_to_cpu(beacon->ibss_mgr_status),
1163                 le32_to_cpu(beacon->high_tsf),
1164                 le32_to_cpu(beacon->low_tsf), rate);
1165 #endif
1166
1167         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1168             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1169                 queue_work(priv->workqueue, &priv->beacon_update);
1170 }
1171
1172 /* Handle notification from uCode that card's power state is changing
1173  * due to software, hardware, or critical temperature RFKILL */
1174 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1175                                     struct iwl_rx_mem_buffer *rxb)
1176 {
1177         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1178         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1179         unsigned long status = priv->status;
1180
1181         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1182                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1183                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1184
1185         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1186                      RF_CARD_DISABLED)) {
1187
1188                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1189                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1190
1191                 if (!iwl_grab_nic_access(priv)) {
1192                         iwl_write_direct32(
1193                                 priv, HBUS_TARG_MBX_C,
1194                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1195
1196                         iwl_release_nic_access(priv);
1197                 }
1198
1199                 if (!(flags & RXON_CARD_DISABLED)) {
1200                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1201                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1202                         if (!iwl_grab_nic_access(priv)) {
1203                                 iwl_write_direct32(
1204                                         priv, HBUS_TARG_MBX_C,
1205                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207                                 iwl_release_nic_access(priv);
1208                         }
1209                 }
1210
1211                 if (flags & RF_CARD_DISABLED) {
1212                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1213                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1214                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1215                         if (!iwl_grab_nic_access(priv))
1216                                 iwl_release_nic_access(priv);
1217                 }
1218         }
1219
1220         if (flags & HW_CARD_DISABLED)
1221                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1222         else
1223                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1224
1225
1226         if (flags & SW_CARD_DISABLED)
1227                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1228         else
1229                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1230
1231         if (!(flags & RXON_CARD_DISABLED))
1232                 iwl_scan_cancel(priv);
1233
1234         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1235              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1236             (test_bit(STATUS_RF_KILL_SW, &status) !=
1237              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1238                 queue_work(priv->workqueue, &priv->rf_kill);
1239         else
1240                 wake_up_interruptible(&priv->wait_command_queue);
1241 }
1242
1243 /**
1244  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1245  *
1246  * Setup the RX handlers for each of the reply types sent from the uCode
1247  * to the host.
1248  *
1249  * This function chains into the hardware specific files for them to setup
1250  * any hardware specific handlers as well.
1251  */
1252 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1253 {
1254         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1255         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1256         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1257         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1258             iwl4965_rx_spectrum_measure_notif;
1259         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1260         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1261             iwl4965_rx_pm_debug_statistics_notif;
1262         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1263
1264         /*
1265          * The same handler is used for both the REPLY to a discrete
1266          * statistics request from the host as well as for the periodic
1267          * statistics notifications (after received beacons) from the uCode.
1268          */
1269         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1270         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1271
1272         iwl_setup_rx_scan_handlers(priv);
1273
1274         /* status change handler */
1275         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1276
1277         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1278             iwl_rx_missed_beacon_notif;
1279         /* Rx handlers */
1280         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1281         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1282         /* block ack */
1283         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1284         /* Set up hardware specific Rx handlers */
1285         priv->cfg->ops->lib->rx_handler_setup(priv);
1286 }
1287
1288 /*
1289  * this should be called while priv->lock is locked
1290 */
1291 static void __iwl_rx_replenish(struct iwl_priv *priv)
1292 {
1293         iwl_rx_allocate(priv);
1294         iwl_rx_queue_restock(priv);
1295 }
1296
1297
1298 /**
1299  * iwl_rx_handle - Main entry function for receiving responses from uCode
1300  *
1301  * Uses the priv->rx_handlers callback function array to invoke
1302  * the appropriate handlers, including command responses,
1303  * frame-received notifications, and other notifications.
1304  */
1305 void iwl_rx_handle(struct iwl_priv *priv)
1306 {
1307         struct iwl_rx_mem_buffer *rxb;
1308         struct iwl_rx_packet *pkt;
1309         struct iwl_rx_queue *rxq = &priv->rxq;
1310         u32 r, i;
1311         int reclaim;
1312         unsigned long flags;
1313         u8 fill_rx = 0;
1314         u32 count = 8;
1315
1316         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1317          * buffer that the driver may process (last buffer filled by ucode). */
1318         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1319         i = rxq->read;
1320
1321         /* Rx interrupt, but nothing sent from uCode */
1322         if (i == r)
1323                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1324
1325         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1326                 fill_rx = 1;
1327
1328         while (i != r) {
1329                 rxb = rxq->queue[i];
1330
1331                 /* If an RXB doesn't have a Rx queue slot associated with it,
1332                  * then a bug has been introduced in the queue refilling
1333                  * routines -- catch it here */
1334                 BUG_ON(rxb == NULL);
1335
1336                 rxq->queue[i] = NULL;
1337
1338                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1339                                             priv->hw_params.rx_buf_size,
1340                                             PCI_DMA_FROMDEVICE);
1341                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1342
1343                 /* Reclaim a command buffer only if this packet is a response
1344                  *   to a (driver-originated) command.
1345                  * If the packet (e.g. Rx frame) originated from uCode,
1346                  *   there is no command buffer to reclaim.
1347                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1348                  *   but apparently a few don't get set; catch them here. */
1349                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1350                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1351                         (pkt->hdr.cmd != REPLY_RX) &&
1352                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1353                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1354                         (pkt->hdr.cmd != REPLY_TX);
1355
1356                 /* Based on type of command response or notification,
1357                  *   handle those that need handling via function in
1358                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1359                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1360                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1361                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1362                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1363                 } else {
1364                         /* No handling needed */
1365                         IWL_DEBUG(IWL_DL_RX,
1366                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1367                                 r, i, get_cmd_string(pkt->hdr.cmd),
1368                                 pkt->hdr.cmd);
1369                 }
1370
1371                 if (reclaim) {
1372                         /* Invoke any callbacks, transfer the skb to caller, and
1373                          * fire off the (possibly) blocking iwl_send_cmd()
1374                          * as we reclaim the driver command queue */
1375                         if (rxb && rxb->skb)
1376                                 iwl_tx_cmd_complete(priv, rxb);
1377                         else
1378                                 IWL_WARNING("Claim null rxb?\n");
1379                 }
1380
1381                 /* For now we just don't re-use anything.  We can tweak this
1382                  * later to try and re-use notification packets and SKBs that
1383                  * fail to Rx correctly */
1384                 if (rxb->skb != NULL) {
1385                         priv->alloc_rxb_skb--;
1386                         dev_kfree_skb_any(rxb->skb);
1387                         rxb->skb = NULL;
1388                 }
1389
1390                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1391                                  priv->hw_params.rx_buf_size,
1392                                  PCI_DMA_FROMDEVICE);
1393                 spin_lock_irqsave(&rxq->lock, flags);
1394                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1395                 spin_unlock_irqrestore(&rxq->lock, flags);
1396                 i = (i + 1) & RX_QUEUE_MASK;
1397                 /* If there are a lot of unused frames,
1398                  * restock the Rx queue so ucode wont assert. */
1399                 if (fill_rx) {
1400                         count++;
1401                         if (count >= 8) {
1402                                 priv->rxq.read = i;
1403                                 __iwl_rx_replenish(priv);
1404                                 count = 0;
1405                         }
1406                 }
1407         }
1408
1409         /* Backtrack one entry */
1410         priv->rxq.read = i;
1411         iwl_rx_queue_restock(priv);
1412 }
1413
1414 #ifdef CONFIG_IWLWIFI_DEBUG
1415 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1416 {
1417         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1418         DECLARE_MAC_BUF(mac);
1419
1420         IWL_DEBUG_RADIO("RX CONFIG:\n");
1421         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1422         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1423         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1424         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1425                         le32_to_cpu(rxon->filter_flags));
1426         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1427         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1428                         rxon->ofdm_basic_rates);
1429         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1430         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1431                         print_mac(mac, rxon->node_addr));
1432         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1433                         print_mac(mac, rxon->bssid_addr));
1434         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1435 }
1436 #endif
1437
1438 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1439 {
1440         IWL_DEBUG_ISR("Enabling interrupts\n");
1441         set_bit(STATUS_INT_ENABLED, &priv->status);
1442         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1443 }
1444
1445 /* call this function to flush any scheduled tasklet */
1446 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1447 {
1448         /* wait to make sure we flush pedding tasklet*/
1449         synchronize_irq(priv->pci_dev->irq);
1450         tasklet_kill(&priv->irq_tasklet);
1451 }
1452
1453 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1454 {
1455         clear_bit(STATUS_INT_ENABLED, &priv->status);
1456
1457         /* disable interrupts from uCode/NIC to host */
1458         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1459
1460         /* acknowledge/clear/reset any interrupts still pending
1461          * from uCode or flow handler (Rx/Tx DMA) */
1462         iwl_write32(priv, CSR_INT, 0xffffffff);
1463         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1464         IWL_DEBUG_ISR("Disabled interrupts\n");
1465 }
1466
1467
1468 /**
1469  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1470  */
1471 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1472 {
1473         /* Set the FW error flag -- cleared on iwl4965_down */
1474         set_bit(STATUS_FW_ERROR, &priv->status);
1475
1476         /* Cancel currently queued command. */
1477         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1478
1479 #ifdef CONFIG_IWLWIFI_DEBUG
1480         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1481                 iwl_dump_nic_error_log(priv);
1482                 iwl_dump_nic_event_log(priv);
1483                 iwl4965_print_rx_config_cmd(priv);
1484         }
1485 #endif
1486
1487         wake_up_interruptible(&priv->wait_command_queue);
1488
1489         /* Keep the restart process from trying to send host
1490          * commands by clearing the INIT status bit */
1491         clear_bit(STATUS_READY, &priv->status);
1492
1493         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1494                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1495                           "Restarting adapter due to uCode error.\n");
1496
1497                 if (iwl_is_associated(priv)) {
1498                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1499                                sizeof(priv->recovery_rxon));
1500                         priv->error_recovering = 1;
1501                 }
1502                 if (priv->cfg->mod_params->restart_fw)
1503                         queue_work(priv->workqueue, &priv->restart);
1504         }
1505 }
1506
1507 static void iwl4965_error_recovery(struct iwl_priv *priv)
1508 {
1509         unsigned long flags;
1510
1511         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1512                sizeof(priv->staging_rxon));
1513         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1514         iwl4965_commit_rxon(priv);
1515
1516         iwl_rxon_add_station(priv, priv->bssid, 1);
1517
1518         spin_lock_irqsave(&priv->lock, flags);
1519         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1520         priv->error_recovering = 0;
1521         spin_unlock_irqrestore(&priv->lock, flags);
1522 }
1523
1524 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1525 {
1526         u32 inta, handled = 0;
1527         u32 inta_fh;
1528         unsigned long flags;
1529 #ifdef CONFIG_IWLWIFI_DEBUG
1530         u32 inta_mask;
1531 #endif
1532
1533         spin_lock_irqsave(&priv->lock, flags);
1534
1535         /* Ack/clear/reset pending uCode interrupts.
1536          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1537          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1538         inta = iwl_read32(priv, CSR_INT);
1539         iwl_write32(priv, CSR_INT, inta);
1540
1541         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1542          * Any new interrupts that happen after this, either while we're
1543          * in this tasklet, or later, will show up in next ISR/tasklet. */
1544         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1545         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1546
1547 #ifdef CONFIG_IWLWIFI_DEBUG
1548         if (priv->debug_level & IWL_DL_ISR) {
1549                 /* just for debug */
1550                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1551                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1552                               inta, inta_mask, inta_fh);
1553         }
1554 #endif
1555
1556         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1557          * atomic, make sure that inta covers all the interrupts that
1558          * we've discovered, even if FH interrupt came in just after
1559          * reading CSR_INT. */
1560         if (inta_fh & CSR49_FH_INT_RX_MASK)
1561                 inta |= CSR_INT_BIT_FH_RX;
1562         if (inta_fh & CSR49_FH_INT_TX_MASK)
1563                 inta |= CSR_INT_BIT_FH_TX;
1564
1565         /* Now service all interrupt bits discovered above. */
1566         if (inta & CSR_INT_BIT_HW_ERR) {
1567                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1568
1569                 /* Tell the device to stop sending interrupts */
1570                 iwl4965_disable_interrupts(priv);
1571
1572                 iwl4965_irq_handle_error(priv);
1573
1574                 handled |= CSR_INT_BIT_HW_ERR;
1575
1576                 spin_unlock_irqrestore(&priv->lock, flags);
1577
1578                 return;
1579         }
1580
1581 #ifdef CONFIG_IWLWIFI_DEBUG
1582         if (priv->debug_level & (IWL_DL_ISR)) {
1583                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1584                 if (inta & CSR_INT_BIT_SCD)
1585                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1586                                       "the frame/frames.\n");
1587
1588                 /* Alive notification via Rx interrupt will do the real work */
1589                 if (inta & CSR_INT_BIT_ALIVE)
1590                         IWL_DEBUG_ISR("Alive interrupt\n");
1591         }
1592 #endif
1593         /* Safely ignore these bits for debug checks below */
1594         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1595
1596         /* HW RF KILL switch toggled */
1597         if (inta & CSR_INT_BIT_RF_KILL) {
1598                 int hw_rf_kill = 0;
1599                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1600                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1601                         hw_rf_kill = 1;
1602
1603                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1604                                 hw_rf_kill ? "disable radio":"enable radio");
1605
1606                 /* driver only loads ucode once setting the interface up.
1607                  * the driver as well won't allow loading if RFKILL is set
1608                  * therefore no need to restart the driver from this handler
1609                  */
1610                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1611                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1612
1613                 handled |= CSR_INT_BIT_RF_KILL;
1614         }
1615
1616         /* Chip got too hot and stopped itself */
1617         if (inta & CSR_INT_BIT_CT_KILL) {
1618                 IWL_ERROR("Microcode CT kill error detected.\n");
1619                 handled |= CSR_INT_BIT_CT_KILL;
1620         }
1621
1622         /* Error detected by uCode */
1623         if (inta & CSR_INT_BIT_SW_ERR) {
1624                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1625                           inta);
1626                 iwl4965_irq_handle_error(priv);
1627                 handled |= CSR_INT_BIT_SW_ERR;
1628         }
1629
1630         /* uCode wakes up after power-down sleep */
1631         if (inta & CSR_INT_BIT_WAKEUP) {
1632                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1633                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1634                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1635                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1636                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1637                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1638                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1639                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1640
1641                 handled |= CSR_INT_BIT_WAKEUP;
1642         }
1643
1644         /* All uCode command responses, including Tx command responses,
1645          * Rx "responses" (frame-received notification), and other
1646          * notifications from uCode come through here*/
1647         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1648                 iwl_rx_handle(priv);
1649                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1650         }
1651
1652         if (inta & CSR_INT_BIT_FH_TX) {
1653                 IWL_DEBUG_ISR("Tx interrupt\n");
1654                 handled |= CSR_INT_BIT_FH_TX;
1655                 /* FH finished to write, send event */
1656                 priv->ucode_write_complete = 1;
1657                 wake_up_interruptible(&priv->wait_command_queue);
1658         }
1659
1660         if (inta & ~handled)
1661                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1662
1663         if (inta & ~CSR_INI_SET_MASK) {
1664                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1665                          inta & ~CSR_INI_SET_MASK);
1666                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1667         }
1668
1669         /* Re-enable all interrupts */
1670         /* only Re-enable if diabled by irq */
1671         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1672                 iwl4965_enable_interrupts(priv);
1673
1674 #ifdef CONFIG_IWLWIFI_DEBUG
1675         if (priv->debug_level & (IWL_DL_ISR)) {
1676                 inta = iwl_read32(priv, CSR_INT);
1677                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1678                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1679                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1680                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1681         }
1682 #endif
1683         spin_unlock_irqrestore(&priv->lock, flags);
1684 }
1685
1686 static irqreturn_t iwl4965_isr(int irq, void *data)
1687 {
1688         struct iwl_priv *priv = data;
1689         u32 inta, inta_mask;
1690         u32 inta_fh;
1691         if (!priv)
1692                 return IRQ_NONE;
1693
1694         spin_lock(&priv->lock);
1695
1696         /* Disable (but don't clear!) interrupts here to avoid
1697          *    back-to-back ISRs and sporadic interrupts from our NIC.
1698          * If we have something to service, the tasklet will re-enable ints.
1699          * If we *don't* have something, we'll re-enable before leaving here. */
1700         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1701         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1702
1703         /* Discover which interrupts are active/pending */
1704         inta = iwl_read32(priv, CSR_INT);
1705         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1706
1707         /* Ignore interrupt if there's nothing in NIC to service.
1708          * This may be due to IRQ shared with another device,
1709          * or due to sporadic interrupts thrown from our NIC. */
1710         if (!inta && !inta_fh) {
1711                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1712                 goto none;
1713         }
1714
1715         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1716                 /* Hardware disappeared. It might have already raised
1717                  * an interrupt */
1718                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1719                 goto unplugged;
1720         }
1721
1722         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1723                       inta, inta_mask, inta_fh);
1724
1725         inta &= ~CSR_INT_BIT_SCD;
1726
1727         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1728         if (likely(inta || inta_fh))
1729                 tasklet_schedule(&priv->irq_tasklet);
1730
1731  unplugged:
1732         spin_unlock(&priv->lock);
1733         return IRQ_HANDLED;
1734
1735  none:
1736         /* re-enable interrupts here since we don't have anything to service. */
1737         /* only Re-enable if diabled by irq */
1738         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1739                 iwl4965_enable_interrupts(priv);
1740         spin_unlock(&priv->lock);
1741         return IRQ_NONE;
1742 }
1743
1744 /******************************************************************************
1745  *
1746  * uCode download functions
1747  *
1748  ******************************************************************************/
1749
1750 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1751 {
1752         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1753         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1754         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1755         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1756         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1757         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1758 }
1759
1760 static void iwl4965_nic_start(struct iwl_priv *priv)
1761 {
1762         /* Remove all resets to allow NIC to operate */
1763         iwl_write32(priv, CSR_RESET, 0);
1764 }
1765
1766
1767 /**
1768  * iwl4965_read_ucode - Read uCode images from disk file.
1769  *
1770  * Copy into buffers for card to fetch via bus-mastering
1771  */
1772 static int iwl4965_read_ucode(struct iwl_priv *priv)
1773 {
1774         struct iwl_ucode *ucode;
1775         int ret;
1776         const struct firmware *ucode_raw;
1777         const char *name = priv->cfg->fw_name;
1778         u8 *src;
1779         size_t len;
1780         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1781
1782         /* Ask kernel firmware_class module to get the boot firmware off disk.
1783          * request_firmware() is synchronous, file is in memory on return. */
1784         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1785         if (ret < 0) {
1786                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1787                                         name, ret);
1788                 goto error;
1789         }
1790
1791         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1792                        name, ucode_raw->size);
1793
1794         /* Make sure that we got at least our header! */
1795         if (ucode_raw->size < sizeof(*ucode)) {
1796                 IWL_ERROR("File size way too small!\n");
1797                 ret = -EINVAL;
1798                 goto err_release;
1799         }
1800
1801         /* Data from ucode file:  header followed by uCode images */
1802         ucode = (void *)ucode_raw->data;
1803
1804         ver = le32_to_cpu(ucode->ver);
1805         inst_size = le32_to_cpu(ucode->inst_size);
1806         data_size = le32_to_cpu(ucode->data_size);
1807         init_size = le32_to_cpu(ucode->init_size);
1808         init_data_size = le32_to_cpu(ucode->init_data_size);
1809         boot_size = le32_to_cpu(ucode->boot_size);
1810
1811         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1812         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1813                        inst_size);
1814         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1815                        data_size);
1816         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1817                        init_size);
1818         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1819                        init_data_size);
1820         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1821                        boot_size);
1822
1823         /* Verify size of file vs. image size info in file's header */
1824         if (ucode_raw->size < sizeof(*ucode) +
1825                 inst_size + data_size + init_size +
1826                 init_data_size + boot_size) {
1827
1828                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1829                                (int)ucode_raw->size);
1830                 ret = -EINVAL;
1831                 goto err_release;
1832         }
1833
1834         /* Verify that uCode images will fit in card's SRAM */
1835         if (inst_size > priv->hw_params.max_inst_size) {
1836                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1837                                inst_size);
1838                 ret = -EINVAL;
1839                 goto err_release;
1840         }
1841
1842         if (data_size > priv->hw_params.max_data_size) {
1843                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1844                                 data_size);
1845                 ret = -EINVAL;
1846                 goto err_release;
1847         }
1848         if (init_size > priv->hw_params.max_inst_size) {
1849                 IWL_DEBUG_INFO
1850                     ("uCode init instr len %d too large to fit in\n",
1851                       init_size);
1852                 ret = -EINVAL;
1853                 goto err_release;
1854         }
1855         if (init_data_size > priv->hw_params.max_data_size) {
1856                 IWL_DEBUG_INFO
1857                     ("uCode init data len %d too large to fit in\n",
1858                       init_data_size);
1859                 ret = -EINVAL;
1860                 goto err_release;
1861         }
1862         if (boot_size > priv->hw_params.max_bsm_size) {
1863                 IWL_DEBUG_INFO
1864                     ("uCode boot instr len %d too large to fit in\n",
1865                       boot_size);
1866                 ret = -EINVAL;
1867                 goto err_release;
1868         }
1869
1870         /* Allocate ucode buffers for card's bus-master loading ... */
1871
1872         /* Runtime instructions and 2 copies of data:
1873          * 1) unmodified from disk
1874          * 2) backup cache for save/restore during power-downs */
1875         priv->ucode_code.len = inst_size;
1876         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1877
1878         priv->ucode_data.len = data_size;
1879         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1880
1881         priv->ucode_data_backup.len = data_size;
1882         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1883
1884         /* Initialization instructions and data */
1885         if (init_size && init_data_size) {
1886                 priv->ucode_init.len = init_size;
1887                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1888
1889                 priv->ucode_init_data.len = init_data_size;
1890                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1891
1892                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1893                         goto err_pci_alloc;
1894         }
1895
1896         /* Bootstrap (instructions only, no data) */
1897         if (boot_size) {
1898                 priv->ucode_boot.len = boot_size;
1899                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1900
1901                 if (!priv->ucode_boot.v_addr)
1902                         goto err_pci_alloc;
1903         }
1904
1905         /* Copy images into buffers for card's bus-master reads ... */
1906
1907         /* Runtime instructions (first block of data in file) */
1908         src = &ucode->data[0];
1909         len = priv->ucode_code.len;
1910         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1911         memcpy(priv->ucode_code.v_addr, src, len);
1912         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1913                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1914
1915         /* Runtime data (2nd block)
1916          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1917         src = &ucode->data[inst_size];
1918         len = priv->ucode_data.len;
1919         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1920         memcpy(priv->ucode_data.v_addr, src, len);
1921         memcpy(priv->ucode_data_backup.v_addr, src, len);
1922
1923         /* Initialization instructions (3rd block) */
1924         if (init_size) {
1925                 src = &ucode->data[inst_size + data_size];
1926                 len = priv->ucode_init.len;
1927                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1928                                 len);
1929                 memcpy(priv->ucode_init.v_addr, src, len);
1930         }
1931
1932         /* Initialization data (4th block) */
1933         if (init_data_size) {
1934                 src = &ucode->data[inst_size + data_size + init_size];
1935                 len = priv->ucode_init_data.len;
1936                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1937                                len);
1938                 memcpy(priv->ucode_init_data.v_addr, src, len);
1939         }
1940
1941         /* Bootstrap instructions (5th block) */
1942         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1943         len = priv->ucode_boot.len;
1944         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1945         memcpy(priv->ucode_boot.v_addr, src, len);
1946
1947         /* We have our copies now, allow OS release its copies */
1948         release_firmware(ucode_raw);
1949         return 0;
1950
1951  err_pci_alloc:
1952         IWL_ERROR("failed to allocate pci memory\n");
1953         ret = -ENOMEM;
1954         iwl4965_dealloc_ucode_pci(priv);
1955
1956  err_release:
1957         release_firmware(ucode_raw);
1958
1959  error:
1960         return ret;
1961 }
1962
1963 /**
1964  * iwl_alive_start - called after REPLY_ALIVE notification received
1965  *                   from protocol/runtime uCode (initialization uCode's
1966  *                   Alive gets handled by iwl_init_alive_start()).
1967  */
1968 static void iwl_alive_start(struct iwl_priv *priv)
1969 {
1970         int ret = 0;
1971
1972         IWL_DEBUG_INFO("Runtime Alive received.\n");
1973
1974         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1975                 /* We had an error bringing up the hardware, so take it
1976                  * all the way back down so we can try again */
1977                 IWL_DEBUG_INFO("Alive failed.\n");
1978                 goto restart;
1979         }
1980
1981         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1982          * This is a paranoid check, because we would not have gotten the
1983          * "runtime" alive if code weren't properly loaded.  */
1984         if (iwl_verify_ucode(priv)) {
1985                 /* Runtime instruction load was bad;
1986                  * take it all the way back down so we can try again */
1987                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1988                 goto restart;
1989         }
1990
1991         iwl_clear_stations_table(priv);
1992         ret = priv->cfg->ops->lib->alive_notify(priv);
1993         if (ret) {
1994                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1995                             ret);
1996                 goto restart;
1997         }
1998
1999         /* After the ALIVE response, we can send host commands to 4965 uCode */
2000         set_bit(STATUS_ALIVE, &priv->status);
2001
2002         if (iwl_is_rfkill(priv))
2003                 return;
2004
2005         ieee80211_wake_queues(priv->hw);
2006
2007         priv->active_rate = priv->rates_mask;
2008         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2009
2010         if (iwl_is_associated(priv)) {
2011                 struct iwl_rxon_cmd *active_rxon =
2012                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2013
2014                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2015                        sizeof(priv->staging_rxon));
2016                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2017         } else {
2018                 /* Initialize our rx_config data */
2019                 iwl4965_connection_init_rx_config(priv);
2020                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2021         }
2022
2023         /* Configure Bluetooth device coexistence support */
2024         iwl4965_send_bt_config(priv);
2025
2026         iwl_reset_run_time_calib(priv);
2027
2028         /* Configure the adapter for unassociated operation */
2029         iwl4965_commit_rxon(priv);
2030
2031         /* At this point, the NIC is initialized and operational */
2032         iwl_rf_kill_ct_config(priv);
2033
2034         iwl_leds_register(priv);
2035
2036         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2037         set_bit(STATUS_READY, &priv->status);
2038         wake_up_interruptible(&priv->wait_command_queue);
2039
2040         if (priv->error_recovering)
2041                 iwl4965_error_recovery(priv);
2042
2043         iwl_power_update_mode(priv, 1);
2044         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2045
2046         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2047                 iwl4965_set_mode(priv, priv->iw_mode);
2048
2049         return;
2050
2051  restart:
2052         queue_work(priv->workqueue, &priv->restart);
2053 }
2054
2055 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2056
2057 static void __iwl4965_down(struct iwl_priv *priv)
2058 {
2059         unsigned long flags;
2060         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2061
2062         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2063
2064         if (!exit_pending)
2065                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2066
2067         iwl_leds_unregister(priv);
2068
2069         iwl_clear_stations_table(priv);
2070
2071         /* Unblock any waiting calls */
2072         wake_up_interruptible_all(&priv->wait_command_queue);
2073
2074         /* Wipe out the EXIT_PENDING status bit if we are not actually
2075          * exiting the module */
2076         if (!exit_pending)
2077                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2078
2079         /* stop and reset the on-board processor */
2080         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2081
2082         /* tell the device to stop sending interrupts */
2083         spin_lock_irqsave(&priv->lock, flags);
2084         iwl4965_disable_interrupts(priv);
2085         spin_unlock_irqrestore(&priv->lock, flags);
2086         iwl_synchronize_irq(priv);
2087
2088         if (priv->mac80211_registered)
2089                 ieee80211_stop_queues(priv->hw);
2090
2091         /* If we have not previously called iwl4965_init() then
2092          * clear all bits but the RF Kill and SUSPEND bits and return */
2093         if (!iwl_is_init(priv)) {
2094                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2095                                         STATUS_RF_KILL_HW |
2096                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2097                                         STATUS_RF_KILL_SW |
2098                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2099                                         STATUS_GEO_CONFIGURED |
2100                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2101                                         STATUS_IN_SUSPEND |
2102                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2103                                         STATUS_EXIT_PENDING;
2104                 goto exit;
2105         }
2106
2107         /* ...otherwise clear out all the status bits but the RF Kill and
2108          * SUSPEND bits and continue taking the NIC down. */
2109         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2110                                 STATUS_RF_KILL_HW |
2111                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2112                                 STATUS_RF_KILL_SW |
2113                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2114                                 STATUS_GEO_CONFIGURED |
2115                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2116                                 STATUS_IN_SUSPEND |
2117                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2118                                 STATUS_FW_ERROR |
2119                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2120                                 STATUS_EXIT_PENDING;
2121
2122         spin_lock_irqsave(&priv->lock, flags);
2123         iwl_clear_bit(priv, CSR_GP_CNTRL,
2124                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2125         spin_unlock_irqrestore(&priv->lock, flags);
2126
2127         iwl_txq_ctx_stop(priv);
2128         iwl_rxq_stop(priv);
2129
2130         spin_lock_irqsave(&priv->lock, flags);
2131         if (!iwl_grab_nic_access(priv)) {
2132                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2133                                          APMG_CLK_VAL_DMA_CLK_RQT);
2134                 iwl_release_nic_access(priv);
2135         }
2136         spin_unlock_irqrestore(&priv->lock, flags);
2137
2138         udelay(5);
2139
2140         /* FIXME: apm_ops.suspend(priv) */
2141         priv->cfg->ops->lib->apm_ops.reset(priv);
2142         priv->cfg->ops->lib->free_shared_mem(priv);
2143
2144  exit:
2145         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2146
2147         if (priv->ibss_beacon)
2148                 dev_kfree_skb(priv->ibss_beacon);
2149         priv->ibss_beacon = NULL;
2150
2151         /* clear out any free frames */
2152         iwl_clear_free_frames(priv);
2153 }
2154
2155 static void iwl4965_down(struct iwl_priv *priv)
2156 {
2157         mutex_lock(&priv->mutex);
2158         __iwl4965_down(priv);
2159         mutex_unlock(&priv->mutex);
2160
2161         iwl_cancel_deferred_work(priv);
2162 }
2163
2164 #define MAX_HW_RESTARTS 5
2165
2166 static int __iwl4965_up(struct iwl_priv *priv)
2167 {
2168         int i;
2169         int ret;
2170
2171         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2172                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2173                 return -EIO;
2174         }
2175
2176         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2177                 IWL_ERROR("ucode not available for device bringup\n");
2178                 return -EIO;
2179         }
2180
2181         /* If platform's RF_KILL switch is NOT set to KILL */
2182         if (iwl_read32(priv, CSR_GP_CNTRL) &
2183                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2184                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2185         else
2186                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2187
2188         if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2189             iwl_is_rfkill(priv)) {
2190                 iwl_rfkill_set_hw_state(priv);
2191                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2192                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2193                 return -ENODEV;
2194         }
2195
2196         iwl_rfkill_set_hw_state(priv);
2197         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2198
2199         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2200         if (ret) {
2201                 IWL_ERROR("Unable to allocate shared memory\n");
2202                 return ret;
2203         }
2204
2205         ret = iwl_hw_nic_init(priv);
2206         if (ret) {
2207                 IWL_ERROR("Unable to init nic\n");
2208                 return ret;
2209         }
2210
2211         /* make sure rfkill handshake bits are cleared */
2212         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2213         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2214                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2215
2216         /* clear (again), then enable host interrupts */
2217         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2218         iwl4965_enable_interrupts(priv);
2219
2220         /* really make sure rfkill handshake bits are cleared */
2221         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2222         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2223
2224         /* Copy original ucode data image from disk into backup cache.
2225          * This will be used to initialize the on-board processor's
2226          * data SRAM for a clean start when the runtime program first loads. */
2227         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2228                priv->ucode_data.len);
2229
2230         /* We return success when we resume from suspend and rf_kill is on. */
2231         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2232             test_bit(STATUS_RF_KILL_SW, &priv->status))
2233                 return 0;
2234
2235         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2236
2237                 iwl_clear_stations_table(priv);
2238
2239                 /* load bootstrap state machine,
2240                  * load bootstrap program into processor's memory,
2241                  * prepare to load the "initialize" uCode */
2242                 ret = priv->cfg->ops->lib->load_ucode(priv);
2243
2244                 if (ret) {
2245                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2246                         continue;
2247                 }
2248
2249                 /* Clear out the uCode error bit if it is set */
2250                 clear_bit(STATUS_FW_ERROR, &priv->status);
2251
2252                 /* start card; "initialize" will load runtime ucode */
2253                 iwl4965_nic_start(priv);
2254
2255                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2256
2257                 return 0;
2258         }
2259
2260         set_bit(STATUS_EXIT_PENDING, &priv->status);
2261         __iwl4965_down(priv);
2262         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2263
2264         /* tried to restart and config the device for as long as our
2265          * patience could withstand */
2266         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2267         return -EIO;
2268 }
2269
2270
2271 /*****************************************************************************
2272  *
2273  * Workqueue callbacks
2274  *
2275  *****************************************************************************/
2276
2277 static void iwl_bg_init_alive_start(struct work_struct *data)
2278 {
2279         struct iwl_priv *priv =
2280             container_of(data, struct iwl_priv, init_alive_start.work);
2281
2282         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2283                 return;
2284
2285         mutex_lock(&priv->mutex);
2286         priv->cfg->ops->lib->init_alive_start(priv);
2287         mutex_unlock(&priv->mutex);
2288 }
2289
2290 static void iwl_bg_alive_start(struct work_struct *data)
2291 {
2292         struct iwl_priv *priv =
2293             container_of(data, struct iwl_priv, alive_start.work);
2294
2295         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2296                 return;
2297
2298         mutex_lock(&priv->mutex);
2299         iwl_alive_start(priv);
2300         mutex_unlock(&priv->mutex);
2301 }
2302
2303 static void iwl4965_bg_rf_kill(struct work_struct *work)
2304 {
2305         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2306
2307         wake_up_interruptible(&priv->wait_command_queue);
2308
2309         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2310                 return;
2311
2312         mutex_lock(&priv->mutex);
2313
2314         if (!iwl_is_rfkill(priv)) {
2315                 IWL_DEBUG(IWL_DL_RF_KILL,
2316                           "HW and/or SW RF Kill no longer active, restarting "
2317                           "device\n");
2318                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2319                         queue_work(priv->workqueue, &priv->restart);
2320         } else {
2321                 /* make sure mac80211 stop sending Tx frame */
2322                 if (priv->mac80211_registered)
2323                         ieee80211_stop_queues(priv->hw);
2324
2325                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2326                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2327                                           "disabled by SW switch\n");
2328                 else
2329                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2330                                     "Kill switch must be turned off for "
2331                                     "wireless networking to work.\n");
2332         }
2333         iwl_rfkill_set_hw_state(priv);
2334
2335         mutex_unlock(&priv->mutex);
2336 }
2337
2338 static void iwl4965_bg_set_monitor(struct work_struct *work)
2339 {
2340         struct iwl_priv *priv = container_of(work,
2341                                 struct iwl_priv, set_monitor);
2342         int ret;
2343
2344         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2345
2346         mutex_lock(&priv->mutex);
2347
2348         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2349
2350         if (ret) {
2351                 if (ret == -EAGAIN)
2352                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2353                 else
2354                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2355         }
2356
2357         mutex_unlock(&priv->mutex);
2358 }
2359
2360 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2361 {
2362         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2363                         run_time_calib_work);
2364
2365         mutex_lock(&priv->mutex);
2366
2367         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2368             test_bit(STATUS_SCANNING, &priv->status)) {
2369                 mutex_unlock(&priv->mutex);
2370                 return;
2371         }
2372
2373         if (priv->start_calib) {
2374                 iwl_chain_noise_calibration(priv, &priv->statistics);
2375
2376                 iwl_sensitivity_calibration(priv, &priv->statistics);
2377         }
2378
2379         mutex_unlock(&priv->mutex);
2380         return;
2381 }
2382
2383 static void iwl4965_bg_up(struct work_struct *data)
2384 {
2385         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2386
2387         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2388                 return;
2389
2390         mutex_lock(&priv->mutex);
2391         __iwl4965_up(priv);
2392         mutex_unlock(&priv->mutex);
2393 }
2394
2395 static void iwl4965_bg_restart(struct work_struct *data)
2396 {
2397         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2398
2399         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2400                 return;
2401
2402         iwl4965_down(priv);
2403         queue_work(priv->workqueue, &priv->up);
2404 }
2405
2406 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2407 {
2408         struct iwl_priv *priv =
2409             container_of(data, struct iwl_priv, rx_replenish);
2410
2411         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2412                 return;
2413
2414         mutex_lock(&priv->mutex);
2415         iwl_rx_replenish(priv);
2416         mutex_unlock(&priv->mutex);
2417 }
2418
2419 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2420
2421 static void iwl4965_post_associate(struct iwl_priv *priv)
2422 {
2423         struct ieee80211_conf *conf = NULL;
2424         int ret = 0;
2425         DECLARE_MAC_BUF(mac);
2426
2427         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2428                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2429                 return;
2430         }
2431
2432         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2433                         priv->assoc_id,
2434                         print_mac(mac, priv->active_rxon.bssid_addr));
2435
2436
2437         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2438                 return;
2439
2440
2441         if (!priv->vif || !priv->is_open)
2442                 return;
2443
2444         iwl_scan_cancel_timeout(priv, 200);
2445
2446         conf = ieee80211_get_hw_conf(priv->hw);
2447
2448         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2449         iwl4965_commit_rxon(priv);
2450
2451         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2452         iwl4965_setup_rxon_timing(priv);
2453         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2454                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2455         if (ret)
2456                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2457                             "Attempting to continue.\n");
2458
2459         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2460
2461         if (priv->current_ht_config.is_ht)
2462                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2463
2464         iwl_set_rxon_chain(priv);
2465         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2466
2467         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2468                         priv->assoc_id, priv->beacon_int);
2469
2470         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2471                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2472         else
2473                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2474
2475         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2476                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2477                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2478                 else
2479                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2480
2481                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2482                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2483
2484         }
2485
2486         iwl4965_commit_rxon(priv);
2487
2488         switch (priv->iw_mode) {
2489         case IEEE80211_IF_TYPE_STA:
2490                 break;
2491
2492         case IEEE80211_IF_TYPE_IBSS:
2493
2494                 /* assume default assoc id */
2495                 priv->assoc_id = 1;
2496
2497                 iwl_rxon_add_station(priv, priv->bssid, 0);
2498                 iwl4965_send_beacon_cmd(priv);
2499
2500                 break;
2501
2502         default:
2503                 IWL_ERROR("%s Should not be called in %d mode\n",
2504                                 __FUNCTION__, priv->iw_mode);
2505                 break;
2506         }
2507
2508         /* Enable Rx differential gain and sensitivity calibrations */
2509         iwl_chain_noise_reset(priv);
2510         priv->start_calib = 1;
2511
2512         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2513                 priv->assoc_station_added = 1;
2514
2515         iwl4965_activate_qos(priv, 0);
2516
2517         iwl_power_update_mode(priv, 0);
2518         /* we have just associated, don't start scan too early */
2519         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2520 }
2521
2522
2523 static void iwl4965_bg_post_associate(struct work_struct *data)
2524 {
2525         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2526                                              post_associate.work);
2527
2528         mutex_lock(&priv->mutex);
2529         iwl4965_post_associate(priv);
2530         mutex_unlock(&priv->mutex);
2531
2532 }
2533
2534 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2535
2536 static void iwl_bg_scan_completed(struct work_struct *work)
2537 {
2538         struct iwl_priv *priv =
2539             container_of(work, struct iwl_priv, scan_completed);
2540
2541         IWL_DEBUG_SCAN("SCAN complete scan\n");
2542
2543         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2544                 return;
2545
2546         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2547                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2548
2549         ieee80211_scan_completed(priv->hw);
2550
2551         /* Since setting the TXPOWER may have been deferred while
2552          * performing the scan, fire one off */
2553         mutex_lock(&priv->mutex);
2554         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2555         mutex_unlock(&priv->mutex);
2556 }
2557
2558 /*****************************************************************************
2559  *
2560  * mac80211 entry point functions
2561  *
2562  *****************************************************************************/
2563
2564 #define UCODE_READY_TIMEOUT     (4 * HZ)
2565
2566 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2567 {
2568         struct iwl_priv *priv = hw->priv;
2569         int ret;
2570
2571         IWL_DEBUG_MAC80211("enter\n");
2572
2573         if (pci_enable_device(priv->pci_dev)) {
2574                 IWL_ERROR("Fail to pci_enable_device\n");
2575                 return -ENODEV;
2576         }
2577         pci_restore_state(priv->pci_dev);
2578         pci_enable_msi(priv->pci_dev);
2579
2580         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2581                           DRV_NAME, priv);
2582         if (ret) {
2583                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2584                 goto out_disable_msi;
2585         }
2586
2587         /* we should be verifying the device is ready to be opened */
2588         mutex_lock(&priv->mutex);
2589
2590         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2591         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2592          * ucode filename and max sizes are card-specific. */
2593
2594         if (!priv->ucode_code.len) {
2595                 ret = iwl4965_read_ucode(priv);
2596                 if (ret) {
2597                         IWL_ERROR("Could not read microcode: %d\n", ret);
2598                         mutex_unlock(&priv->mutex);
2599                         goto out_release_irq;
2600                 }
2601         }
2602
2603         ret = __iwl4965_up(priv);
2604
2605         mutex_unlock(&priv->mutex);
2606
2607         if (ret)
2608                 goto out_release_irq;
2609
2610         IWL_DEBUG_INFO("Start UP work done.\n");
2611
2612         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2613                 return 0;
2614
2615         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2616          * mac80211 will not be run successfully. */
2617         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2618                         test_bit(STATUS_READY, &priv->status),
2619                         UCODE_READY_TIMEOUT);
2620         if (!ret) {
2621                 if (!test_bit(STATUS_READY, &priv->status)) {
2622                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2623                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2624                         ret = -ETIMEDOUT;
2625                         goto out_release_irq;
2626                 }
2627         }
2628
2629         priv->is_open = 1;
2630         IWL_DEBUG_MAC80211("leave\n");
2631         return 0;
2632
2633 out_release_irq:
2634         free_irq(priv->pci_dev->irq, priv);
2635 out_disable_msi:
2636         pci_disable_msi(priv->pci_dev);
2637         pci_disable_device(priv->pci_dev);
2638         priv->is_open = 0;
2639         IWL_DEBUG_MAC80211("leave - failed\n");
2640         return ret;
2641 }
2642
2643 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2644 {
2645         struct iwl_priv *priv = hw->priv;
2646
2647         IWL_DEBUG_MAC80211("enter\n");
2648
2649         if (!priv->is_open) {
2650                 IWL_DEBUG_MAC80211("leave - skip\n");
2651                 return;
2652         }
2653
2654         priv->is_open = 0;
2655
2656         if (iwl_is_ready_rf(priv)) {
2657                 /* stop mac, cancel any scan request and clear
2658                  * RXON_FILTER_ASSOC_MSK BIT
2659                  */
2660                 mutex_lock(&priv->mutex);
2661                 iwl_scan_cancel_timeout(priv, 100);
2662                 cancel_delayed_work(&priv->post_associate);
2663                 mutex_unlock(&priv->mutex);
2664         }
2665
2666         iwl4965_down(priv);
2667
2668         flush_workqueue(priv->workqueue);
2669         free_irq(priv->pci_dev->irq, priv);
2670         pci_disable_msi(priv->pci_dev);
2671         pci_save_state(priv->pci_dev);
2672         pci_disable_device(priv->pci_dev);
2673
2674         IWL_DEBUG_MAC80211("leave\n");
2675 }
2676
2677 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2678 {
2679         struct iwl_priv *priv = hw->priv;
2680
2681         IWL_DEBUG_MAC80211("enter\n");
2682
2683         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2684                 IWL_DEBUG_MAC80211("leave - monitor\n");
2685                 dev_kfree_skb_any(skb);
2686                 return 0;
2687         }
2688
2689         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2690                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2691
2692         if (iwl_tx_skb(priv, skb))
2693                 dev_kfree_skb_any(skb);
2694
2695         IWL_DEBUG_MAC80211("leave\n");
2696         return 0;
2697 }
2698
2699 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2700                                  struct ieee80211_if_init_conf *conf)
2701 {
2702         struct iwl_priv *priv = hw->priv;
2703         unsigned long flags;
2704         DECLARE_MAC_BUF(mac);
2705
2706         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2707
2708         if (priv->vif) {
2709                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2710                 return -EOPNOTSUPP;
2711         }
2712
2713         spin_lock_irqsave(&priv->lock, flags);
2714         priv->vif = conf->vif;
2715
2716         spin_unlock_irqrestore(&priv->lock, flags);
2717
2718         mutex_lock(&priv->mutex);
2719
2720         if (conf->mac_addr) {
2721                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2722                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2723         }
2724
2725         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2726                 /* we are not ready, will run again when ready */
2727                 set_bit(STATUS_MODE_PENDING, &priv->status);
2728
2729         mutex_unlock(&priv->mutex);
2730
2731         IWL_DEBUG_MAC80211("leave\n");
2732         return 0;
2733 }
2734
2735 /**
2736  * iwl4965_mac_config - mac80211 config callback
2737  *
2738  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2739  * be set inappropriately and the driver currently sets the hardware up to
2740  * use it whenever needed.
2741  */
2742 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2743 {
2744         struct iwl_priv *priv = hw->priv;
2745         const struct iwl_channel_info *ch_info;
2746         unsigned long flags;
2747         int ret = 0;
2748         u16 channel;
2749
2750         mutex_lock(&priv->mutex);
2751         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2752
2753         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2754
2755         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2756                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2757                 goto out;
2758         }
2759
2760         if (!conf->radio_enabled)
2761                 iwl_radio_kill_sw_disable_radio(priv);
2762
2763         if (!iwl_is_ready(priv)) {
2764                 IWL_DEBUG_MAC80211("leave - not ready\n");
2765                 ret = -EIO;
2766                 goto out;
2767         }
2768
2769         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2770                      test_bit(STATUS_SCANNING, &priv->status))) {
2771                 IWL_DEBUG_MAC80211("leave - scanning\n");
2772                 set_bit(STATUS_CONF_PENDING, &priv->status);
2773                 mutex_unlock(&priv->mutex);
2774                 return 0;
2775         }
2776
2777         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2778         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2779         if (!is_channel_valid(ch_info)) {
2780                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2781                 ret = -EINVAL;
2782                 goto out;
2783         }
2784
2785         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2786             !is_channel_ibss(ch_info)) {
2787                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2788                         conf->channel->hw_value, conf->channel->band);
2789                 ret = -EINVAL;
2790                 goto out;
2791         }
2792
2793         spin_lock_irqsave(&priv->lock, flags);
2794
2795         /* if we are switching from ht to 2.4 clear flags
2796          * from any ht related info since 2.4 does not
2797          * support ht */
2798         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2799 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2800             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2801 #endif
2802         )
2803                 priv->staging_rxon.flags = 0;
2804
2805         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2806
2807         iwl_set_flags_for_band(priv, conf->channel->band);
2808
2809         /* The list of supported rates and rate mask can be different
2810          * for each band; since the band may have changed, reset
2811          * the rate mask to what mac80211 lists */
2812         iwl4965_set_rate(priv);
2813
2814         spin_unlock_irqrestore(&priv->lock, flags);
2815
2816 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2817         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2818                 iwl4965_hw_channel_switch(priv, conf->channel);
2819                 goto out;
2820         }
2821 #endif
2822
2823         if (!conf->radio_enabled) {
2824                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2825                 goto out;
2826         }
2827
2828         if (iwl_is_rfkill(priv)) {
2829                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2830                 ret = -EIO;
2831                 goto out;
2832         }
2833
2834         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2835                            priv->tx_power_user_lmt, conf->power_level);
2836
2837         iwl_set_tx_power(priv, conf->power_level, false);
2838
2839         iwl4965_set_rate(priv);
2840
2841         if (memcmp(&priv->active_rxon,
2842                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2843                 iwl4965_commit_rxon(priv);
2844         else
2845                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2846
2847         IWL_DEBUG_MAC80211("leave\n");
2848
2849 out:
2850         clear_bit(STATUS_CONF_PENDING, &priv->status);
2851         mutex_unlock(&priv->mutex);
2852         return ret;
2853 }
2854
2855 static void iwl4965_config_ap(struct iwl_priv *priv)
2856 {
2857         int ret = 0;
2858
2859         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2860                 return;
2861
2862         /* The following should be done only at AP bring up */
2863         if (!(iwl_is_associated(priv))) {
2864
2865                 /* RXON - unassoc (to set timing command) */
2866                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2867                 iwl4965_commit_rxon(priv);
2868
2869                 /* RXON Timing */
2870                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2871                 iwl4965_setup_rxon_timing(priv);
2872                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2873                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2874                 if (ret)
2875                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2876                                         "Attempting to continue.\n");
2877
2878                 iwl_set_rxon_chain(priv);
2879
2880                 /* FIXME: what should be the assoc_id for AP? */
2881                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2882                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2883                         priv->staging_rxon.flags |=
2884                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2885                 else
2886                         priv->staging_rxon.flags &=
2887                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2888
2889                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2890                         if (priv->assoc_capability &
2891                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2892                                 priv->staging_rxon.flags |=
2893                                         RXON_FLG_SHORT_SLOT_MSK;
2894                         else
2895                                 priv->staging_rxon.flags &=
2896                                         ~RXON_FLG_SHORT_SLOT_MSK;
2897
2898                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2899                                 priv->staging_rxon.flags &=
2900                                         ~RXON_FLG_SHORT_SLOT_MSK;
2901                 }
2902                 /* restore RXON assoc */
2903                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2904                 iwl4965_commit_rxon(priv);
2905                 iwl4965_activate_qos(priv, 1);
2906                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2907         }
2908         iwl4965_send_beacon_cmd(priv);
2909
2910         /* FIXME - we need to add code here to detect a totally new
2911          * configuration, reset the AP, unassoc, rxon timing, assoc,
2912          * clear sta table, add BCAST sta... */
2913 }
2914
2915 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2916                                         struct ieee80211_vif *vif,
2917                                     struct ieee80211_if_conf *conf)
2918 {
2919         struct iwl_priv *priv = hw->priv;
2920         DECLARE_MAC_BUF(mac);
2921         unsigned long flags;
2922         int rc;
2923
2924         if (conf == NULL)
2925                 return -EIO;
2926
2927         if (priv->vif != vif) {
2928                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2929                 return 0;
2930         }
2931
2932         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2933             (!conf->beacon || !conf->ssid_len)) {
2934                 IWL_DEBUG_MAC80211
2935                     ("Leaving in AP mode because HostAPD is not ready.\n");
2936                 return 0;
2937         }
2938
2939         if (!iwl_is_alive(priv))
2940                 return -EAGAIN;
2941
2942         mutex_lock(&priv->mutex);
2943
2944         if (conf->bssid)
2945                 IWL_DEBUG_MAC80211("bssid: %s\n",
2946                                    print_mac(mac, conf->bssid));
2947
2948 /*
2949  * very dubious code was here; the probe filtering flag is never set:
2950  *
2951         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2952             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2953  */
2954
2955         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2956                 if (!conf->bssid) {
2957                         conf->bssid = priv->mac_addr;
2958                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2959                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2960                                            print_mac(mac, conf->bssid));
2961                 }
2962                 if (priv->ibss_beacon)
2963                         dev_kfree_skb(priv->ibss_beacon);
2964
2965                 priv->ibss_beacon = conf->beacon;
2966         }
2967
2968         if (iwl_is_rfkill(priv))
2969                 goto done;
2970
2971         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2972             !is_multicast_ether_addr(conf->bssid)) {
2973                 /* If there is currently a HW scan going on in the background
2974                  * then we need to cancel it else the RXON below will fail. */
2975                 if (iwl_scan_cancel_timeout(priv, 100)) {
2976                         IWL_WARNING("Aborted scan still in progress "
2977                                     "after 100ms\n");
2978                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2979                         mutex_unlock(&priv->mutex);
2980                         return -EAGAIN;
2981                 }
2982                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2983
2984                 /* TODO: Audit driver for usage of these members and see
2985                  * if mac80211 deprecates them (priv->bssid looks like it
2986                  * shouldn't be there, but I haven't scanned the IBSS code
2987                  * to verify) - jpk */
2988                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2989
2990                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2991                         iwl4965_config_ap(priv);
2992                 else {
2993                         rc = iwl4965_commit_rxon(priv);
2994                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2995                                 iwl_rxon_add_station(
2996                                         priv, priv->active_rxon.bssid_addr, 1);
2997                 }
2998
2999         } else {
3000                 iwl_scan_cancel_timeout(priv, 100);
3001                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3002                 iwl4965_commit_rxon(priv);
3003         }
3004
3005  done:
3006         spin_lock_irqsave(&priv->lock, flags);
3007         if (!conf->ssid_len)
3008                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3009         else
3010                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3011
3012         priv->essid_len = conf->ssid_len;
3013         spin_unlock_irqrestore(&priv->lock, flags);
3014
3015         IWL_DEBUG_MAC80211("leave\n");
3016         mutex_unlock(&priv->mutex);
3017
3018         return 0;
3019 }
3020
3021 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3022                                  unsigned int changed_flags,
3023                                  unsigned int *total_flags,
3024                                  int mc_count, struct dev_addr_list *mc_list)
3025 {
3026         struct iwl_priv *priv = hw->priv;
3027
3028         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3029                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3030                                    IEEE80211_IF_TYPE_MNTR,
3031                                    changed_flags, *total_flags);
3032                 /* queue work 'cuz mac80211 is holding a lock which
3033                  * prevents us from issuing (synchronous) f/w cmds */
3034                 queue_work(priv->workqueue, &priv->set_monitor);
3035         }
3036         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3037                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3038 }
3039
3040 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3041                                      struct ieee80211_if_init_conf *conf)
3042 {
3043         struct iwl_priv *priv = hw->priv;
3044
3045         IWL_DEBUG_MAC80211("enter\n");
3046
3047         mutex_lock(&priv->mutex);
3048
3049         if (iwl_is_ready_rf(priv)) {
3050                 iwl_scan_cancel_timeout(priv, 100);
3051                 cancel_delayed_work(&priv->post_associate);
3052                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3053                 iwl4965_commit_rxon(priv);
3054         }
3055         if (priv->vif == conf->vif) {
3056                 priv->vif = NULL;
3057                 memset(priv->bssid, 0, ETH_ALEN);
3058                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3059                 priv->essid_len = 0;
3060         }
3061         mutex_unlock(&priv->mutex);
3062
3063         IWL_DEBUG_MAC80211("leave\n");
3064
3065 }
3066
3067 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3068 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3069                                      struct ieee80211_vif *vif,
3070                                      struct ieee80211_bss_conf *bss_conf,
3071                                      u32 changes)
3072 {
3073         struct iwl_priv *priv = hw->priv;
3074
3075         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3076
3077         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3078                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3079                                    bss_conf->use_short_preamble);
3080                 if (bss_conf->use_short_preamble)
3081                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3082                 else
3083                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3084         }
3085
3086         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3087                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3088                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3089                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3090                 else
3091                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3092         }
3093
3094         if (changes & BSS_CHANGED_HT) {
3095                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3096                 iwl4965_ht_conf(priv, bss_conf);
3097                 iwl_set_rxon_chain(priv);
3098         }
3099
3100         if (changes & BSS_CHANGED_ASSOC) {
3101                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3102                 /* This should never happen as this function should
3103                  * never be called from interrupt context. */
3104                 if (WARN_ON_ONCE(in_interrupt()))
3105                         return;
3106                 if (bss_conf->assoc) {
3107                         priv->assoc_id = bss_conf->aid;
3108                         priv->beacon_int = bss_conf->beacon_int;
3109                         priv->timestamp = bss_conf->timestamp;
3110                         priv->assoc_capability = bss_conf->assoc_capability;
3111                         priv->next_scan_jiffies = jiffies +
3112                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3113                         mutex_lock(&priv->mutex);
3114                         iwl4965_post_associate(priv);
3115                         mutex_unlock(&priv->mutex);
3116                 } else {
3117                         priv->assoc_id = 0;
3118                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3119                 }
3120         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3121                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3122                         iwl_send_rxon_assoc(priv);
3123         }
3124
3125 }
3126
3127 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3128 {
3129         int rc = 0;
3130         unsigned long flags;
3131         struct iwl_priv *priv = hw->priv;
3132
3133         IWL_DEBUG_MAC80211("enter\n");
3134
3135         mutex_lock(&priv->mutex);
3136         spin_lock_irqsave(&priv->lock, flags);
3137
3138         if (!iwl_is_ready_rf(priv)) {
3139                 rc = -EIO;
3140                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3141                 goto out_unlock;
3142         }
3143
3144         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3145                 rc = -EIO;
3146                 IWL_ERROR("ERROR: APs don't scan\n");
3147                 goto out_unlock;
3148         }
3149
3150         /* we don't schedule scan within next_scan_jiffies period */
3151         if (priv->next_scan_jiffies &&
3152                         time_after(priv->next_scan_jiffies, jiffies)) {
3153                 rc = -EAGAIN;
3154                 goto out_unlock;
3155         }
3156         /* if we just finished scan ask for delay */
3157         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3158                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3159                 rc = -EAGAIN;
3160                 goto out_unlock;
3161         }
3162         if (len) {
3163                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3164                                iwl_escape_essid(ssid, len), (int)len);
3165
3166                 priv->one_direct_scan = 1;
3167                 priv->direct_ssid_len = (u8)
3168                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3169                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3170         } else
3171                 priv->one_direct_scan = 0;
3172
3173         rc = iwl_scan_initiate(priv);
3174
3175         IWL_DEBUG_MAC80211("leave\n");
3176
3177 out_unlock:
3178         spin_unlock_irqrestore(&priv->lock, flags);
3179         mutex_unlock(&priv->mutex);
3180
3181         return rc;
3182 }
3183
3184 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3185                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3186                         u32 iv32, u16 *phase1key)
3187 {
3188         struct iwl_priv *priv = hw->priv;
3189         u8 sta_id = IWL_INVALID_STATION;
3190         unsigned long flags;
3191         __le16 key_flags = 0;
3192         int i;
3193         DECLARE_MAC_BUF(mac);
3194
3195         IWL_DEBUG_MAC80211("enter\n");
3196
3197         sta_id = iwl_find_station(priv, addr);
3198         if (sta_id == IWL_INVALID_STATION) {
3199                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3200                                    print_mac(mac, addr));
3201                 return;
3202         }
3203
3204         iwl_scan_cancel_timeout(priv, 100);
3205
3206         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3207         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3208         key_flags &= ~STA_KEY_FLG_INVALID;
3209
3210         if (sta_id == priv->hw_params.bcast_sta_id)
3211                 key_flags |= STA_KEY_MULTICAST_MSK;
3212
3213         spin_lock_irqsave(&priv->sta_lock, flags);
3214
3215         priv->stations[sta_id].sta.key.key_flags = key_flags;
3216         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3217
3218         for (i = 0; i < 5; i++)
3219                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3220                         cpu_to_le16(phase1key[i]);
3221
3222         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3223         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3224
3225         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3226
3227         spin_unlock_irqrestore(&priv->sta_lock, flags);
3228
3229         IWL_DEBUG_MAC80211("leave\n");
3230 }
3231
3232 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3233                            const u8 *local_addr, const u8 *addr,
3234                            struct ieee80211_key_conf *key)
3235 {
3236         struct iwl_priv *priv = hw->priv;
3237         DECLARE_MAC_BUF(mac);
3238         int ret = 0;
3239         u8 sta_id = IWL_INVALID_STATION;
3240         u8 is_default_wep_key = 0;
3241
3242         IWL_DEBUG_MAC80211("enter\n");
3243
3244         if (priv->hw_params.sw_crypto) {
3245                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3246                 return -EOPNOTSUPP;
3247         }
3248
3249         if (is_zero_ether_addr(addr))
3250                 /* only support pairwise keys */
3251                 return -EOPNOTSUPP;
3252
3253         sta_id = iwl_find_station(priv, addr);
3254         if (sta_id == IWL_INVALID_STATION) {
3255                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3256                                    print_mac(mac, addr));
3257                 return -EINVAL;
3258
3259         }
3260
3261         mutex_lock(&priv->mutex);
3262         iwl_scan_cancel_timeout(priv, 100);
3263         mutex_unlock(&priv->mutex);
3264
3265         /* If we are getting WEP group key and we didn't receive any key mapping
3266          * so far, we are in legacy wep mode (group key only), otherwise we are
3267          * in 1X mode.
3268          * In legacy wep mode, we use another host command to the uCode */
3269         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3270                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3271                 if (cmd == SET_KEY)
3272                         is_default_wep_key = !priv->key_mapping_key;
3273                 else
3274                         is_default_wep_key =
3275                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3276         }
3277
3278         switch (cmd) {
3279         case SET_KEY:
3280                 if (is_default_wep_key)
3281                         ret = iwl_set_default_wep_key(priv, key);
3282                 else
3283                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3284
3285                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3286                 break;
3287         case DISABLE_KEY:
3288                 if (is_default_wep_key)
3289                         ret = iwl_remove_default_wep_key(priv, key);
3290                 else
3291                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3292
3293                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3294                 break;
3295         default:
3296                 ret = -EINVAL;
3297         }
3298
3299         IWL_DEBUG_MAC80211("leave\n");
3300
3301         return ret;
3302 }
3303
3304 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3305                            const struct ieee80211_tx_queue_params *params)
3306 {
3307         struct iwl_priv *priv = hw->priv;
3308         unsigned long flags;
3309         int q;
3310
3311         IWL_DEBUG_MAC80211("enter\n");
3312
3313         if (!iwl_is_ready_rf(priv)) {
3314                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3315                 return -EIO;
3316         }
3317
3318         if (queue >= AC_NUM) {
3319                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3320                 return 0;
3321         }
3322
3323         if (!priv->qos_data.qos_enable) {
3324                 priv->qos_data.qos_active = 0;
3325                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3326                 return 0;
3327         }
3328         q = AC_NUM - 1 - queue;
3329
3330         spin_lock_irqsave(&priv->lock, flags);
3331
3332         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3333         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3334         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3335         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3336                         cpu_to_le16((params->txop * 32));
3337
3338         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3339         priv->qos_data.qos_active = 1;
3340
3341         spin_unlock_irqrestore(&priv->lock, flags);
3342
3343         mutex_lock(&priv->mutex);
3344         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3345                 iwl4965_activate_qos(priv, 1);
3346         else if (priv->assoc_id && iwl_is_associated(priv))
3347                 iwl4965_activate_qos(priv, 0);
3348
3349         mutex_unlock(&priv->mutex);
3350
3351         IWL_DEBUG_MAC80211("leave\n");
3352         return 0;
3353 }
3354
3355 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3356                                 struct ieee80211_tx_queue_stats *stats)
3357 {
3358         struct iwl_priv *priv = hw->priv;
3359         int i, avail;
3360         struct iwl_tx_queue *txq;
3361         struct iwl_queue *q;
3362         unsigned long flags;
3363
3364         IWL_DEBUG_MAC80211("enter\n");
3365
3366         if (!iwl_is_ready_rf(priv)) {
3367                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3368                 return -EIO;
3369         }
3370
3371         spin_lock_irqsave(&priv->lock, flags);
3372
3373         for (i = 0; i < AC_NUM; i++) {
3374                 txq = &priv->txq[i];
3375                 q = &txq->q;
3376                 avail = iwl_queue_space(q);
3377
3378                 stats[i].len = q->n_window - avail;
3379                 stats[i].limit = q->n_window - q->high_mark;
3380                 stats[i].count = q->n_window;
3381
3382         }
3383         spin_unlock_irqrestore(&priv->lock, flags);
3384
3385         IWL_DEBUG_MAC80211("leave\n");
3386
3387         return 0;
3388 }
3389
3390 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3391                              struct ieee80211_low_level_stats *stats)
3392 {
3393         struct iwl_priv *priv = hw->priv;
3394
3395         priv = hw->priv;
3396         IWL_DEBUG_MAC80211("enter\n");
3397         IWL_DEBUG_MAC80211("leave\n");
3398
3399         return 0;
3400 }
3401
3402 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3403 {
3404         struct iwl_priv *priv = hw->priv;
3405         unsigned long flags;
3406
3407         mutex_lock(&priv->mutex);
3408         IWL_DEBUG_MAC80211("enter\n");
3409
3410         spin_lock_irqsave(&priv->lock, flags);
3411         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3412         spin_unlock_irqrestore(&priv->lock, flags);
3413
3414         iwl_reset_qos(priv);
3415
3416         cancel_delayed_work(&priv->post_associate);
3417
3418         spin_lock_irqsave(&priv->lock, flags);
3419         priv->assoc_id = 0;
3420         priv->assoc_capability = 0;
3421         priv->assoc_station_added = 0;
3422
3423         /* new association get rid of ibss beacon skb */
3424         if (priv->ibss_beacon)
3425                 dev_kfree_skb(priv->ibss_beacon);
3426
3427         priv->ibss_beacon = NULL;
3428
3429         priv->beacon_int = priv->hw->conf.beacon_int;
3430         priv->timestamp = 0;
3431         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3432                 priv->beacon_int = 0;
3433
3434         spin_unlock_irqrestore(&priv->lock, flags);
3435
3436         if (!iwl_is_ready_rf(priv)) {
3437                 IWL_DEBUG_MAC80211("leave - not ready\n");
3438                 mutex_unlock(&priv->mutex);
3439                 return;
3440         }
3441
3442         /* we are restarting association process
3443          * clear RXON_FILTER_ASSOC_MSK bit
3444          */
3445         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3446                 iwl_scan_cancel_timeout(priv, 100);
3447                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3448                 iwl4965_commit_rxon(priv);
3449         }
3450
3451         iwl_power_update_mode(priv, 0);
3452
3453         /* Per mac80211.h: This is only used in IBSS mode... */
3454         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3455
3456                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3457                 mutex_unlock(&priv->mutex);
3458                 return;
3459         }
3460
3461         iwl4965_set_rate(priv);
3462
3463         mutex_unlock(&priv->mutex);
3464
3465         IWL_DEBUG_MAC80211("leave\n");
3466 }
3467
3468 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3469 {
3470         struct iwl_priv *priv = hw->priv;
3471         unsigned long flags;
3472         __le64 timestamp;
3473
3474         mutex_lock(&priv->mutex);
3475         IWL_DEBUG_MAC80211("enter\n");
3476
3477         if (!iwl_is_ready_rf(priv)) {
3478                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3479                 mutex_unlock(&priv->mutex);
3480                 return -EIO;
3481         }
3482
3483         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3484                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3485                 mutex_unlock(&priv->mutex);
3486                 return -EIO;
3487         }
3488
3489         spin_lock_irqsave(&priv->lock, flags);
3490
3491         if (priv->ibss_beacon)
3492                 dev_kfree_skb(priv->ibss_beacon);
3493
3494         priv->ibss_beacon = skb;
3495
3496         priv->assoc_id = 0;
3497         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3498         priv->timestamp = le64_to_cpu(timestamp) +  (priv->beacon_int * 1000);
3499
3500         IWL_DEBUG_MAC80211("leave\n");
3501         spin_unlock_irqrestore(&priv->lock, flags);
3502
3503         iwl_reset_qos(priv);
3504
3505         iwl4965_post_associate(priv);
3506
3507         mutex_unlock(&priv->mutex);
3508
3509         return 0;
3510 }
3511
3512 /*****************************************************************************
3513  *
3514  * sysfs attributes
3515  *
3516  *****************************************************************************/
3517
3518 #ifdef CONFIG_IWLWIFI_DEBUG
3519
3520 /*
3521  * The following adds a new attribute to the sysfs representation
3522  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3523  * used for controlling the debug level.
3524  *
3525  * See the level definitions in iwl for details.
3526  */
3527
3528 static ssize_t show_debug_level(struct device *d,
3529                                 struct device_attribute *attr, char *buf)
3530 {
3531         struct iwl_priv *priv = d->driver_data;
3532
3533         return sprintf(buf, "0x%08X\n", priv->debug_level);
3534 }
3535 static ssize_t store_debug_level(struct device *d,
3536                                 struct device_attribute *attr,
3537                                  const char *buf, size_t count)
3538 {
3539         struct iwl_priv *priv = d->driver_data;
3540         char *p = (char *)buf;
3541         u32 val;
3542
3543         val = simple_strtoul(p, &p, 0);
3544         if (p == buf)
3545                 printk(KERN_INFO DRV_NAME
3546                        ": %s is not in hex or decimal form.\n", buf);
3547         else
3548                 priv->debug_level = val;
3549
3550         return strnlen(buf, count);
3551 }
3552
3553 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3554                         show_debug_level, store_debug_level);
3555
3556
3557 #endif /* CONFIG_IWLWIFI_DEBUG */
3558
3559
3560 static ssize_t show_version(struct device *d,
3561                                 struct device_attribute *attr, char *buf)
3562 {
3563         struct iwl_priv *priv = d->driver_data;
3564         struct iwl_alive_resp *palive = &priv->card_alive;
3565         ssize_t pos = 0;
3566         u16 eeprom_ver;
3567
3568         if (palive->is_valid)
3569                 pos += sprintf(buf + pos,
3570                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3571                                 "fw type: 0x%01X 0x%01X\n",
3572                                 palive->ucode_major, palive->ucode_minor,
3573                                 palive->sw_rev[0], palive->sw_rev[1],
3574                                 palive->ver_type, palive->ver_subtype);
3575         else
3576                 pos += sprintf(buf + pos, "fw not loaded\n");
3577
3578         if (priv->eeprom) {
3579                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3580                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3581                                  eeprom_ver);
3582         } else {
3583                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3584         }
3585
3586         return pos;
3587 }
3588
3589 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3590
3591 static ssize_t show_temperature(struct device *d,
3592                                 struct device_attribute *attr, char *buf)
3593 {
3594         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3595
3596         if (!iwl_is_alive(priv))
3597                 return -EAGAIN;
3598
3599         return sprintf(buf, "%d\n", priv->temperature);
3600 }
3601
3602 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3603
3604 static ssize_t show_rs_window(struct device *d,
3605                               struct device_attribute *attr,
3606                               char *buf)
3607 {
3608         struct iwl_priv *priv = d->driver_data;
3609         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3610 }
3611 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3612
3613 static ssize_t show_tx_power(struct device *d,
3614                              struct device_attribute *attr, char *buf)
3615 {
3616         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3617         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3618 }
3619
3620 static ssize_t store_tx_power(struct device *d,
3621                               struct device_attribute *attr,
3622                               const char *buf, size_t count)
3623 {
3624         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3625         char *p = (char *)buf;
3626         u32 val;
3627
3628         val = simple_strtoul(p, &p, 10);
3629         if (p == buf)
3630                 printk(KERN_INFO DRV_NAME
3631                        ": %s is not in decimal form.\n", buf);
3632         else
3633                 iwl_set_tx_power(priv, val, false);
3634
3635         return count;
3636 }
3637
3638 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3639
3640 static ssize_t show_flags(struct device *d,
3641                           struct device_attribute *attr, char *buf)
3642 {
3643         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3644
3645         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3646 }
3647
3648 static ssize_t store_flags(struct device *d,
3649                            struct device_attribute *attr,
3650                            const char *buf, size_t count)
3651 {
3652         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3653         u32 flags = simple_strtoul(buf, NULL, 0);
3654
3655         mutex_lock(&priv->mutex);
3656         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3657                 /* Cancel any currently running scans... */
3658                 if (iwl_scan_cancel_timeout(priv, 100))
3659                         IWL_WARNING("Could not cancel scan.\n");
3660                 else {
3661                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3662                                        flags);
3663                         priv->staging_rxon.flags = cpu_to_le32(flags);
3664                         iwl4965_commit_rxon(priv);
3665                 }
3666         }
3667         mutex_unlock(&priv->mutex);
3668
3669         return count;
3670 }
3671
3672 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3673
3674 static ssize_t show_filter_flags(struct device *d,
3675                                  struct device_attribute *attr, char *buf)
3676 {
3677         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3678
3679         return sprintf(buf, "0x%04X\n",
3680                 le32_to_cpu(priv->active_rxon.filter_flags));
3681 }
3682
3683 static ssize_t store_filter_flags(struct device *d,
3684                                   struct device_attribute *attr,
3685                                   const char *buf, size_t count)
3686 {
3687         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3688         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3689
3690         mutex_lock(&priv->mutex);
3691         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3692                 /* Cancel any currently running scans... */
3693                 if (iwl_scan_cancel_timeout(priv, 100))
3694                         IWL_WARNING("Could not cancel scan.\n");
3695                 else {
3696                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3697                                        "0x%04X\n", filter_flags);
3698                         priv->staging_rxon.filter_flags =
3699                                 cpu_to_le32(filter_flags);
3700                         iwl4965_commit_rxon(priv);
3701                 }
3702         }
3703         mutex_unlock(&priv->mutex);
3704
3705         return count;
3706 }
3707
3708 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3709                    store_filter_flags);
3710
3711 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3712
3713 static ssize_t show_measurement(struct device *d,
3714                                 struct device_attribute *attr, char *buf)
3715 {
3716         struct iwl_priv *priv = dev_get_drvdata(d);
3717         struct iwl4965_spectrum_notification measure_report;
3718         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3719         u8 *data = (u8 *) & measure_report;
3720         unsigned long flags;
3721
3722         spin_lock_irqsave(&priv->lock, flags);
3723         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3724                 spin_unlock_irqrestore(&priv->lock, flags);
3725                 return 0;
3726         }
3727         memcpy(&measure_report, &priv->measure_report, size);
3728         priv->measurement_status = 0;
3729         spin_unlock_irqrestore(&priv->lock, flags);
3730
3731         while (size && (PAGE_SIZE - len)) {
3732                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3733                                    PAGE_SIZE - len, 1);
3734                 len = strlen(buf);
3735                 if (PAGE_SIZE - len)
3736                         buf[len++] = '\n';
3737
3738                 ofs += 16;
3739                 size -= min(size, 16U);
3740         }
3741
3742         return len;
3743 }
3744
3745 static ssize_t store_measurement(struct device *d,
3746                                  struct device_attribute *attr,
3747                                  const char *buf, size_t count)
3748 {
3749         struct iwl_priv *priv = dev_get_drvdata(d);
3750         struct ieee80211_measurement_params params = {
3751                 .channel = le16_to_cpu(priv->active_rxon.channel),
3752                 .start_time = cpu_to_le64(priv->last_tsf),
3753                 .duration = cpu_to_le16(1),
3754         };
3755         u8 type = IWL_MEASURE_BASIC;
3756         u8 buffer[32];
3757         u8 channel;
3758
3759         if (count) {
3760                 char *p = buffer;
3761                 strncpy(buffer, buf, min(sizeof(buffer), count));
3762                 channel = simple_strtoul(p, NULL, 0);
3763                 if (channel)
3764                         params.channel = channel;
3765
3766                 p = buffer;
3767                 while (*p && *p != ' ')
3768                         p++;
3769                 if (*p)
3770                         type = simple_strtoul(p + 1, NULL, 0);
3771         }
3772
3773         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3774                        "channel %d (for '%s')\n", type, params.channel, buf);
3775         iwl4965_get_measurement(priv, &params, type);
3776
3777         return count;
3778 }
3779
3780 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3781                    show_measurement, store_measurement);
3782 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3783
3784 static ssize_t store_retry_rate(struct device *d,
3785                                 struct device_attribute *attr,
3786                                 const char *buf, size_t count)
3787 {
3788         struct iwl_priv *priv = dev_get_drvdata(d);
3789
3790         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3791         if (priv->retry_rate <= 0)
3792                 priv->retry_rate = 1;
3793
3794         return count;
3795 }
3796
3797 static ssize_t show_retry_rate(struct device *d,
3798                                struct device_attribute *attr, char *buf)
3799 {
3800         struct iwl_priv *priv = dev_get_drvdata(d);
3801         return sprintf(buf, "%d", priv->retry_rate);
3802 }
3803
3804 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3805                    store_retry_rate);
3806
3807 static ssize_t store_power_level(struct device *d,
3808                                  struct device_attribute *attr,
3809                                  const char *buf, size_t count)
3810 {
3811         struct iwl_priv *priv = dev_get_drvdata(d);
3812         int rc;
3813         int mode;
3814
3815         mode = simple_strtoul(buf, NULL, 0);
3816         mutex_lock(&priv->mutex);
3817
3818         if (!iwl_is_ready(priv)) {
3819                 rc = -EAGAIN;
3820                 goto out;
3821         }
3822
3823         rc = iwl_power_set_user_mode(priv, mode);
3824         if (rc) {
3825                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3826                 goto out;
3827         }
3828         rc = count;
3829
3830  out:
3831         mutex_unlock(&priv->mutex);
3832         return rc;
3833 }
3834
3835 #define MAX_WX_STRING 80
3836
3837 /* Values are in microsecond */
3838 static const s32 timeout_duration[] = {
3839         350000,
3840         250000,
3841         75000,
3842         37000,
3843         25000,
3844 };
3845 static const s32 period_duration[] = {
3846         400000,
3847         700000,
3848         1000000,
3849         1000000,
3850         1000000
3851 };
3852
3853 static ssize_t show_power_level(struct device *d,
3854                                 struct device_attribute *attr, char *buf)
3855 {
3856         struct iwl_priv *priv = dev_get_drvdata(d);
3857         int level = priv->power_data.power_mode;
3858         char *p = buf;
3859
3860         p += sprintf(p, "%d ", level);
3861         switch (level) {
3862         case IWL_POWER_MODE_CAM:
3863         case IWL_POWER_AC:
3864                 p += sprintf(p, "(AC)");
3865                 break;
3866         case IWL_POWER_BATTERY:
3867                 p += sprintf(p, "(BATTERY)");
3868                 break;
3869         default:
3870                 p += sprintf(p,
3871                              "(Timeout %dms, Period %dms)",
3872                              timeout_duration[level - 1] / 1000,
3873                              period_duration[level - 1] / 1000);
3874         }
3875 /*
3876         if (!(priv->power_mode & IWL_POWER_ENABLED))
3877                 p += sprintf(p, " OFF\n");
3878         else
3879                 p += sprintf(p, " \n");
3880 */
3881         p += sprintf(p, " \n");
3882         return (p - buf + 1);
3883 }
3884
3885 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3886                    store_power_level);
3887
3888 static ssize_t show_channels(struct device *d,
3889                              struct device_attribute *attr, char *buf)
3890 {
3891
3892         struct iwl_priv *priv = dev_get_drvdata(d);
3893         struct ieee80211_channel *channels = NULL;
3894         const struct ieee80211_supported_band *supp_band = NULL;
3895         int len = 0, i;
3896         int count = 0;
3897
3898         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3899                 return -EAGAIN;
3900
3901         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3902         channels = supp_band->channels;
3903         count = supp_band->n_channels;
3904
3905         len += sprintf(&buf[len],
3906                         "Displaying %d channels in 2.4GHz band "
3907                         "(802.11bg):\n", count);
3908
3909         for (i = 0; i < count; i++)
3910                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3911                                 ieee80211_frequency_to_channel(
3912                                 channels[i].center_freq),
3913                                 channels[i].max_power,
3914                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3915                                 " (IEEE 802.11h required)" : "",
3916                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3917                                 || (channels[i].flags &
3918                                 IEEE80211_CHAN_RADAR)) ? "" :
3919                                 ", IBSS",
3920                                 channels[i].flags &
3921                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3922                                 "passive only" : "active/passive");
3923
3924         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3925         channels = supp_band->channels;
3926         count = supp_band->n_channels;
3927
3928         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3929                         "(802.11a):\n", count);
3930
3931         for (i = 0; i < count; i++)
3932                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3933                                 ieee80211_frequency_to_channel(
3934                                 channels[i].center_freq),
3935                                 channels[i].max_power,
3936                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3937                                 " (IEEE 802.11h required)" : "",
3938                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3939                                 || (channels[i].flags &
3940                                 IEEE80211_CHAN_RADAR)) ? "" :
3941                                 ", IBSS",
3942                                 channels[i].flags &
3943                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3944                                 "passive only" : "active/passive");
3945
3946         return len;
3947 }
3948
3949 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3950
3951 static ssize_t show_statistics(struct device *d,
3952                                struct device_attribute *attr, char *buf)
3953 {
3954         struct iwl_priv *priv = dev_get_drvdata(d);
3955         u32 size = sizeof(struct iwl_notif_statistics);
3956         u32 len = 0, ofs = 0;
3957         u8 *data = (u8 *) & priv->statistics;
3958         int rc = 0;
3959
3960         if (!iwl_is_alive(priv))
3961                 return -EAGAIN;
3962
3963         mutex_lock(&priv->mutex);
3964         rc = iwl_send_statistics_request(priv, 0);
3965         mutex_unlock(&priv->mutex);
3966
3967         if (rc) {
3968                 len = sprintf(buf,
3969                               "Error sending statistics request: 0x%08X\n", rc);
3970                 return len;
3971         }
3972
3973         while (size && (PAGE_SIZE - len)) {
3974                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3975                                    PAGE_SIZE - len, 1);
3976                 len = strlen(buf);
3977                 if (PAGE_SIZE - len)
3978                         buf[len++] = '\n';
3979
3980                 ofs += 16;
3981                 size -= min(size, 16U);
3982         }
3983
3984         return len;
3985 }
3986
3987 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3988
3989 static ssize_t show_status(struct device *d,
3990                            struct device_attribute *attr, char *buf)
3991 {
3992         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3993         if (!iwl_is_alive(priv))
3994                 return -EAGAIN;
3995         return sprintf(buf, "0x%08x\n", (int)priv->status);
3996 }
3997
3998 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3999
4000 /*****************************************************************************
4001  *
4002  * driver setup and teardown
4003  *
4004  *****************************************************************************/
4005
4006 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4007 {
4008         priv->workqueue = create_workqueue(DRV_NAME);
4009
4010         init_waitqueue_head(&priv->wait_command_queue);
4011
4012         INIT_WORK(&priv->up, iwl4965_bg_up);
4013         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4014         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4015         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4016         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4017         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4018         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4019         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4020         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4021         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4022
4023         /* FIXME : remove when resolved PENDING */
4024         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4025         iwl_setup_scan_deferred_work(priv);
4026
4027         if (priv->cfg->ops->lib->setup_deferred_work)
4028                 priv->cfg->ops->lib->setup_deferred_work(priv);
4029
4030         init_timer(&priv->statistics_periodic);
4031         priv->statistics_periodic.data = (unsigned long)priv;
4032         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4033
4034         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4035                      iwl4965_irq_tasklet, (unsigned long)priv);
4036 }
4037
4038 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4039 {
4040         if (priv->cfg->ops->lib->cancel_deferred_work)
4041                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4042
4043         cancel_delayed_work_sync(&priv->init_alive_start);
4044         cancel_delayed_work(&priv->scan_check);
4045         cancel_delayed_work(&priv->alive_start);
4046         cancel_delayed_work(&priv->post_associate);
4047         cancel_work_sync(&priv->beacon_update);
4048         del_timer_sync(&priv->statistics_periodic);
4049 }
4050
4051 static struct attribute *iwl4965_sysfs_entries[] = {
4052         &dev_attr_channels.attr,
4053         &dev_attr_flags.attr,
4054         &dev_attr_filter_flags.attr,
4055 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4056         &dev_attr_measurement.attr,
4057 #endif
4058         &dev_attr_power_level.attr,
4059         &dev_attr_retry_rate.attr,
4060         &dev_attr_rs_window.attr,
4061         &dev_attr_statistics.attr,
4062         &dev_attr_status.attr,
4063         &dev_attr_temperature.attr,
4064         &dev_attr_tx_power.attr,
4065 #ifdef CONFIG_IWLWIFI_DEBUG
4066         &dev_attr_debug_level.attr,
4067 #endif
4068         &dev_attr_version.attr,
4069
4070         NULL
4071 };
4072
4073 static struct attribute_group iwl4965_attribute_group = {
4074         .name = NULL,           /* put in device directory */
4075         .attrs = iwl4965_sysfs_entries,
4076 };
4077
4078 static struct ieee80211_ops iwl4965_hw_ops = {
4079         .tx = iwl4965_mac_tx,
4080         .start = iwl4965_mac_start,
4081         .stop = iwl4965_mac_stop,
4082         .add_interface = iwl4965_mac_add_interface,
4083         .remove_interface = iwl4965_mac_remove_interface,
4084         .config = iwl4965_mac_config,
4085         .config_interface = iwl4965_mac_config_interface,
4086         .configure_filter = iwl4965_configure_filter,
4087         .set_key = iwl4965_mac_set_key,
4088         .update_tkip_key = iwl4965_mac_update_tkip_key,
4089         .get_stats = iwl4965_mac_get_stats,
4090         .get_tx_stats = iwl4965_mac_get_tx_stats,
4091         .conf_tx = iwl4965_mac_conf_tx,
4092         .reset_tsf = iwl4965_mac_reset_tsf,
4093         .beacon_update = iwl4965_mac_beacon_update,
4094         .bss_info_changed = iwl4965_bss_info_changed,
4095         .ampdu_action = iwl4965_mac_ampdu_action,
4096         .hw_scan = iwl4965_mac_hw_scan
4097 };
4098
4099 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4100 {
4101         int err = 0;
4102         struct iwl_priv *priv;
4103         struct ieee80211_hw *hw;
4104         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4105         unsigned long flags;
4106         DECLARE_MAC_BUF(mac);
4107
4108         /************************
4109          * 1. Allocating HW data
4110          ************************/
4111
4112         /* Disabling hardware scan means that mac80211 will perform scans
4113          * "the hard way", rather than using device's scan. */
4114         if (cfg->mod_params->disable_hw_scan) {
4115                 if (cfg->mod_params->debug & IWL_DL_INFO)
4116                         dev_printk(KERN_DEBUG, &(pdev->dev),
4117                                    "Disabling hw_scan\n");
4118                 iwl4965_hw_ops.hw_scan = NULL;
4119         }
4120
4121         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4122         if (!hw) {
4123                 err = -ENOMEM;
4124                 goto out;
4125         }
4126         priv = hw->priv;
4127         /* At this point both hw and priv are allocated. */
4128
4129         SET_IEEE80211_DEV(hw, &pdev->dev);
4130
4131         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4132         priv->cfg = cfg;
4133         priv->pci_dev = pdev;
4134
4135 #ifdef CONFIG_IWLWIFI_DEBUG
4136         priv->debug_level = priv->cfg->mod_params->debug;
4137         atomic_set(&priv->restrict_refcnt, 0);
4138 #endif
4139
4140         /**************************
4141          * 2. Initializing PCI bus
4142          **************************/
4143         if (pci_enable_device(pdev)) {
4144                 err = -ENODEV;
4145                 goto out_ieee80211_free_hw;
4146         }
4147
4148         pci_set_master(pdev);
4149
4150         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4151         if (!err)
4152                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4153         if (err) {
4154                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4155                 if (!err)
4156                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4157                 /* both attempts failed: */
4158                 if (err) {
4159                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4160                                 DRV_NAME);
4161                         goto out_pci_disable_device;
4162                 }
4163         }
4164
4165         err = pci_request_regions(pdev, DRV_NAME);
4166         if (err)
4167                 goto out_pci_disable_device;
4168
4169         pci_set_drvdata(pdev, priv);
4170
4171         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4172          * PCI Tx retries from interfering with C3 CPU state */
4173         pci_write_config_byte(pdev, 0x41, 0x00);
4174
4175         /***********************
4176          * 3. Read REV register
4177          ***********************/
4178         priv->hw_base = pci_iomap(pdev, 0, 0);
4179         if (!priv->hw_base) {
4180                 err = -ENODEV;
4181                 goto out_pci_release_regions;
4182         }
4183
4184         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4185                 (unsigned long long) pci_resource_len(pdev, 0));
4186         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4187
4188         iwl_hw_detect(priv);
4189         printk(KERN_INFO DRV_NAME
4190                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4191                 priv->cfg->name, priv->hw_rev);
4192
4193         /* amp init */
4194         err = priv->cfg->ops->lib->apm_ops.init(priv);
4195         if (err < 0) {
4196                 IWL_DEBUG_INFO("Failed to init APMG\n");
4197                 goto out_iounmap;
4198         }
4199         /*****************
4200          * 4. Read EEPROM
4201          *****************/
4202         /* Read the EEPROM */
4203         err = iwl_eeprom_init(priv);
4204         if (err) {
4205                 IWL_ERROR("Unable to init EEPROM\n");
4206                 goto out_iounmap;
4207         }
4208         err = iwl_eeprom_check_version(priv);
4209         if (err)
4210                 goto out_iounmap;
4211
4212         /* extract MAC Address */
4213         iwl_eeprom_get_mac(priv, priv->mac_addr);
4214         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4215         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4216
4217         /************************
4218          * 5. Setup HW constants
4219          ************************/
4220         if (iwl_set_hw_params(priv)) {
4221                 IWL_ERROR("failed to set hw parameters\n");
4222                 goto out_free_eeprom;
4223         }
4224
4225         /*******************
4226          * 6. Setup priv
4227          *******************/
4228
4229         err = iwl_init_drv(priv);
4230         if (err)
4231                 goto out_free_eeprom;
4232         /* At this point both hw and priv are initialized. */
4233
4234         /**********************************
4235          * 7. Initialize module parameters
4236          **********************************/
4237
4238         /* Disable radio (SW RF KILL) via parameter when loading driver */
4239         if (priv->cfg->mod_params->disable) {
4240                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4241                 IWL_DEBUG_INFO("Radio disabled.\n");
4242         }
4243
4244         /********************
4245          * 8. Setup services
4246          ********************/
4247         spin_lock_irqsave(&priv->lock, flags);
4248         iwl4965_disable_interrupts(priv);
4249         spin_unlock_irqrestore(&priv->lock, flags);
4250
4251         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4252         if (err) {
4253                 IWL_ERROR("failed to create sysfs device attributes\n");
4254                 goto out_uninit_drv;
4255         }
4256
4257
4258         iwl_setup_deferred_work(priv);
4259         iwl_setup_rx_handlers(priv);
4260
4261         /********************
4262          * 9. Conclude
4263          ********************/
4264         pci_save_state(pdev);
4265         pci_disable_device(pdev);
4266
4267         /**********************************
4268          * 10. Setup and register mac80211
4269          **********************************/
4270
4271         err = iwl_setup_mac(priv);
4272         if (err)
4273                 goto out_remove_sysfs;
4274
4275         err = iwl_dbgfs_register(priv, DRV_NAME);
4276         if (err)
4277                 IWL_ERROR("failed to create debugfs files\n");
4278
4279         err = iwl_rfkill_init(priv);
4280         if (err)
4281                 IWL_ERROR("Unable to initialize RFKILL system. "
4282                                   "Ignoring error: %d\n", err);
4283         iwl_power_initialize(priv);
4284         return 0;
4285
4286  out_remove_sysfs:
4287         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4288  out_uninit_drv:
4289         iwl_uninit_drv(priv);
4290  out_free_eeprom:
4291         iwl_eeprom_free(priv);
4292  out_iounmap:
4293         pci_iounmap(pdev, priv->hw_base);
4294  out_pci_release_regions:
4295         pci_release_regions(pdev);
4296         pci_set_drvdata(pdev, NULL);
4297  out_pci_disable_device:
4298         pci_disable_device(pdev);
4299  out_ieee80211_free_hw:
4300         ieee80211_free_hw(priv->hw);
4301  out:
4302         return err;
4303 }
4304
4305 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4306 {
4307         struct iwl_priv *priv = pci_get_drvdata(pdev);
4308         unsigned long flags;
4309
4310         if (!priv)
4311                 return;
4312
4313         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4314
4315         iwl_dbgfs_unregister(priv);
4316         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4317
4318         if (priv->mac80211_registered) {
4319                 ieee80211_unregister_hw(priv->hw);
4320                 priv->mac80211_registered = 0;
4321         }
4322
4323         set_bit(STATUS_EXIT_PENDING, &priv->status);
4324
4325         iwl4965_down(priv);
4326
4327         /* make sure we flush any pending irq or
4328          * tasklet for the driver
4329          */
4330         spin_lock_irqsave(&priv->lock, flags);
4331         iwl4965_disable_interrupts(priv);
4332         spin_unlock_irqrestore(&priv->lock, flags);
4333
4334         iwl_synchronize_irq(priv);
4335
4336         iwl_rfkill_unregister(priv);
4337         iwl4965_dealloc_ucode_pci(priv);
4338
4339         if (priv->rxq.bd)
4340                 iwl_rx_queue_free(priv, &priv->rxq);
4341         iwl_hw_txq_ctx_free(priv);
4342
4343         iwl_clear_stations_table(priv);
4344         iwl_eeprom_free(priv);
4345
4346
4347         /*netif_stop_queue(dev); */
4348         flush_workqueue(priv->workqueue);
4349
4350         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4351          * priv->workqueue... so we can't take down the workqueue
4352          * until now... */
4353         destroy_workqueue(priv->workqueue);
4354         priv->workqueue = NULL;
4355
4356         pci_iounmap(pdev, priv->hw_base);
4357         pci_release_regions(pdev);
4358         pci_disable_device(pdev);
4359         pci_set_drvdata(pdev, NULL);
4360
4361         iwl_uninit_drv(priv);
4362
4363         if (priv->ibss_beacon)
4364                 dev_kfree_skb(priv->ibss_beacon);
4365
4366         ieee80211_free_hw(priv->hw);
4367 }
4368
4369 #ifdef CONFIG_PM
4370
4371 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4372 {
4373         struct iwl_priv *priv = pci_get_drvdata(pdev);
4374
4375         if (priv->is_open) {
4376                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4377                 iwl4965_mac_stop(priv->hw);
4378                 priv->is_open = 1;
4379         }
4380
4381         pci_set_power_state(pdev, PCI_D3hot);
4382
4383         return 0;
4384 }
4385
4386 static int iwl4965_pci_resume(struct pci_dev *pdev)
4387 {
4388         struct iwl_priv *priv = pci_get_drvdata(pdev);
4389
4390         pci_set_power_state(pdev, PCI_D0);
4391
4392         if (priv->is_open)
4393                 iwl4965_mac_start(priv->hw);
4394
4395         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4396         return 0;
4397 }
4398
4399 #endif /* CONFIG_PM */
4400
4401 /*****************************************************************************
4402  *
4403  * driver and module entry point
4404  *
4405  *****************************************************************************/
4406
4407 /* Hardware specific file defines the PCI IDs table for that hardware module */
4408 static struct pci_device_id iwl_hw_card_ids[] = {
4409         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4410         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4411 #ifdef CONFIG_IWL5000
4412         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4413         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4414         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4415 #endif /* CONFIG_IWL5000 */
4416         {0}
4417 };
4418 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4419
4420 static struct pci_driver iwl_driver = {
4421         .name = DRV_NAME,
4422         .id_table = iwl_hw_card_ids,
4423         .probe = iwl4965_pci_probe,
4424         .remove = __devexit_p(iwl4965_pci_remove),
4425 #ifdef CONFIG_PM
4426         .suspend = iwl4965_pci_suspend,
4427         .resume = iwl4965_pci_resume,
4428 #endif
4429 };
4430
4431 static int __init iwl4965_init(void)
4432 {
4433
4434         int ret;
4435         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4436         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4437
4438         ret = iwl4965_rate_control_register();
4439         if (ret) {
4440                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4441                 return ret;
4442         }
4443
4444         ret = pci_register_driver(&iwl_driver);
4445         if (ret) {
4446                 IWL_ERROR("Unable to initialize PCI module\n");
4447                 goto error_register;
4448         }
4449
4450         return ret;
4451
4452 error_register:
4453         iwl4965_rate_control_unregister();
4454         return ret;
4455 }
4456
4457 static void __exit iwl4965_exit(void)
4458 {
4459         pci_unregister_driver(&iwl_driver);
4460         iwl4965_rate_control_unregister();
4461 }
4462
4463 module_exit(iwl4965_exit);
4464 module_init(iwl4965_init);