err.no 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->staging_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         /* init channel/phymode to values given at driver init */
 798         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
 799
 800         iwl4965_connection_init_rx_config(priv);
 801         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 802
 803         iwl_clear_stations_table(priv);
 804
 805         /* dont commit rxon if rf-kill is on*/
 806         if (!iwl_is_ready_rf(priv))
 807                 return -EAGAIN;
 808
 809         cancel_delayed_work(&priv->scan_check);
 810         if (iwl_scan_cancel_timeout(priv, 100)) {
 811                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 812                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 813                 return -EAGAIN;
 814         }
 815
 816         iwl4965_commit_rxon(priv);
 817
 818         return 0;
 819 }
 820
 821 static void iwl4965_set_rate(struct iwl_priv *priv)
 822 {
 823         const struct ieee80211_supported_band *hw = NULL;
 824         struct ieee80211_rate *rate;
 825         int i;
 826
 827         hw = iwl_get_hw_mode(priv, priv->band);
 828         if (!hw) {
 829                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 830                 return;
 831         }
 832
 833         priv->active_rate = 0;
 834         priv->active_rate_basic = 0;
 835
 836         for (i = 0; i < hw->n_bitrates; i++) {
 837                 rate = &(hw->bitrates[i]);
 838                 if (rate->hw_value < IWL_RATE_COUNT)
 839                         priv->active_rate |= (1 << rate->hw_value);
 840         }
 841
 842         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 843                        priv->active_rate, priv->active_rate_basic);
 844
 845         /*
 846          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 847          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 848          * OFDM
 849          */
 850         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 851                 priv->staging_rxon.cck_basic_rates =
 852                     ((priv->active_rate_basic &
 853                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 854         else
 855                 priv->staging_rxon.cck_basic_rates =
 856                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 857
 858         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 859                 priv->staging_rxon.ofdm_basic_rates =
 860                     ((priv->active_rate_basic &
 861                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 862                       IWL_FIRST_OFDM_RATE) & 0xFF;
 863         else
 864                 priv->staging_rxon.ofdm_basic_rates =
 865                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 866 }
 867
 868 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 869
 870 #include "iwl-spectrum.h"
 871
 872 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 873 #define BEACON_TIME_MASK_HIGH   0xFF000000
 874 #define TIME_UNIT               1024
 875
 876 /*
 877  * extended beacon time format
 878  * time in usec will be changed into a 32-bit value in 8:24 format
 879  * the high 1 byte is the beacon counts
 880  * the lower 3 bytes is the time in usec within one beacon interval
 881  */
 882
 883 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 884 {
 885         u32 quot;
 886         u32 rem;
 887         u32 interval = beacon_interval * 1024;
 888
 889         if (!interval || !usec)
 890                 return 0;
 891
 892         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 893         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 894
 895         return (quot << 24) + rem;
 896 }
 897
 898 /* base is usually what we get from ucode with each received frame,
 899  * the same as HW timer counter counting down
 900  */
 901
 902 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 903 {
 904         u32 base_low = base & BEACON_TIME_MASK_LOW;
 905         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 906         u32 interval = beacon_interval * TIME_UNIT;
 907         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 908             (addon & BEACON_TIME_MASK_HIGH);
 909
 910         if (base_low > addon_low)
 911                 res += base_low - addon_low;
 912         else if (base_low < addon_low) {
 913                 res += interval + base_low - addon_low;
 914                 res += (1 << 24);
 915         } else
 916                 res += (1 << 24);
 917
 918         return cpu_to_le32(res);
 919 }
 920
 921 static int iwl4965_get_measurement(struct iwl_priv *priv,
 922                                struct ieee80211_measurement_params *params,
 923                                u8 type)
 924 {
 925         struct iwl4965_spectrum_cmd spectrum;
 926         struct iwl_rx_packet *res;
 927         struct iwl_host_cmd cmd = {
 928                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 929                 .data = (void *)&spectrum,
 930                 .meta.flags = CMD_WANT_SKB,
 931         };
 932         u32 add_time = le64_to_cpu(params->start_time);
 933         int rc;
 934         int spectrum_resp_status;
 935         int duration = le16_to_cpu(params->duration);
 936
 937         if (iwl_is_associated(priv))
 938                 add_time =
 939                     iwl4965_usecs_to_beacons(
 940                         le64_to_cpu(params->start_time) - priv->last_tsf,
 941                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 942
 943         memset(&spectrum, 0, sizeof(spectrum));
 944
 945         spectrum.channel_count = cpu_to_le16(1);
 946         spectrum.flags =
 947             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 948         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 949         cmd.len = sizeof(spectrum);
 950         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 951
 952         if (iwl_is_associated(priv))
 953                 spectrum.start_time =
 954                     iwl4965_add_beacon_time(priv->last_beacon_time,
 955                                 add_time,
 956                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 957         else
 958                 spectrum.start_time = 0;
 959
 960         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 961         spectrum.channels[0].channel = params->channel;
 962         spectrum.channels[0].type = type;
 963         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 964                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 965                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 966
 967         rc = iwl_send_cmd_sync(priv, &cmd);
 968         if (rc)
 969                 return rc;
 970
 971         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 972         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 973                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 974                 rc = -EIO;
 975         }
 976
 977         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 978         switch (spectrum_resp_status) {
 979         case 0:         /* Command will be handled */
 980                 if (res->u.spectrum.id != 0xff) {
 981                         IWL_DEBUG_INFO
 982                             ("Replaced existing measurement: %d\n",
 983                              res->u.spectrum.id);
 984                         priv->measurement_status &= ~MEASUREMENT_READY;
 985                 }
 986                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 987                 rc = 0;
 988                 break;
 989
 990         case 1:         /* Command will not be handled */
 991                 rc = -EAGAIN;
 992                 break;
 993         }
 994
 995         dev_kfree_skb_any(cmd.meta.u.skb);
 996
 997         return rc;
 998 }
 999 #endif
1000
1001 /******************************************************************************
1002  *
1003  * Generic RX handler implementations
1004  *
1005  ******************************************************************************/
1006 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1007                                 struct iwl_rx_mem_buffer *rxb)
1008 {
1009         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1010         struct iwl_alive_resp *palive;
1011         struct delayed_work *pwork;
1012
1013         palive = &pkt->u.alive_frame;
1014
1015         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1016                        "0x%01X 0x%01X\n",
1017                        palive->is_valid, palive->ver_type,
1018                        palive->ver_subtype);
1019
1020         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1021                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1022                 memcpy(&priv->card_alive_init,
1023                        &pkt->u.alive_frame,
1024                        sizeof(struct iwl_init_alive_resp));
1025                 pwork = &priv->init_alive_start;
1026         } else {
1027                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1028                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1029                        sizeof(struct iwl_alive_resp));
1030                 pwork = &priv->alive_start;
1031         }
1032
1033         /* We delay the ALIVE response by 5ms to
1034          * give the HW RF Kill time to activate... */
1035         if (palive->is_valid == UCODE_VALID_OK)
1036                 queue_delayed_work(priv->workqueue, pwork,
1037                                    msecs_to_jiffies(5));
1038         else
1039                 IWL_WARNING("uCode did not respond OK.\n");
1040 }
1041
1042 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1043                                    struct iwl_rx_mem_buffer *rxb)
1044 {
1045         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1046
1047         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1048                 "seq 0x%04X ser 0x%08X\n",
1049                 le32_to_cpu(pkt->u.err_resp.error_type),
1050                 get_cmd_string(pkt->u.err_resp.cmd_id),
1051                 pkt->u.err_resp.cmd_id,
1052                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1053                 le32_to_cpu(pkt->u.err_resp.error_info));
1054 }
1055
1056 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1057
1058 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1059 {
1060         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1062         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1063         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1064                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1065         rxon->channel = csa->channel;
1066         priv->staging_rxon.channel = csa->channel;
1067 }
1068
1069 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1070                                           struct iwl_rx_mem_buffer *rxb)
1071 {
1072 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1073         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1074         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1075
1076         if (!report->state) {
1077                 IWL_DEBUG(IWL_DL_11H,
1078                         "Spectrum Measure Notification: Start\n");
1079                 return;
1080         }
1081
1082         memcpy(&priv->measure_report, report, sizeof(*report));
1083         priv->measurement_status |= MEASUREMENT_READY;
1084 #endif
1085 }
1086
1087 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1088                                       struct iwl_rx_mem_buffer *rxb)
1089 {
1090 #ifdef CONFIG_IWLWIFI_DEBUG
1091         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1092         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1093         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1094                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1095 #endif
1096 }
1097
1098 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1099                                              struct iwl_rx_mem_buffer *rxb)
1100 {
1101         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1102         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1103                         "notification for %s:\n",
1104                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1105         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1106 }
1107
1108 static void iwl4965_bg_beacon_update(struct work_struct *work)
1109 {
1110         struct iwl_priv *priv =
1111                 container_of(work, struct iwl_priv, beacon_update);
1112         struct sk_buff *beacon;
1113
1114         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1115         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1116
1117         if (!beacon) {
1118                 IWL_ERROR("update beacon failed\n");
1119                 return;
1120         }
1121
1122         mutex_lock(&priv->mutex);
1123         /* new beacon skb is allocated every time; dispose previous.*/
1124         if (priv->ibss_beacon)
1125                 dev_kfree_skb(priv->ibss_beacon);
1126
1127         priv->ibss_beacon = beacon;
1128         mutex_unlock(&priv->mutex);
1129
1130         iwl4965_send_beacon_cmd(priv);
1131 }
1132
1133 /**
1134  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1135  *
1136  * This callback is provided in order to send a statistics request.
1137  *
1138  * This timer function is continually reset to execute within
1139  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1140  * was received.  We need to ensure we receive the statistics in order
1141  * to update the temperature used for calibrating the TXPOWER.
1142  */
1143 static void iwl4965_bg_statistics_periodic(unsigned long data)
1144 {
1145         struct iwl_priv *priv = (struct iwl_priv *)data;
1146
1147         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1148                 return;
1149
1150         iwl_send_statistics_request(priv, CMD_ASYNC);
1151 }
1152
1153 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1154                                 struct iwl_rx_mem_buffer *rxb)
1155 {
1156 #ifdef CONFIG_IWLWIFI_DEBUG
1157         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1158         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1159         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1160
1161         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1162                 "tsf %d %d rate %d\n",
1163                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1164                 beacon->beacon_notify_hdr.failure_frame,
1165                 le32_to_cpu(beacon->ibss_mgr_status),
1166                 le32_to_cpu(beacon->high_tsf),
1167                 le32_to_cpu(beacon->low_tsf), rate);
1168 #endif
1169
1170         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1171             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1172                 queue_work(priv->workqueue, &priv->beacon_update);
1173 }
1174
1175 /* Handle notification from uCode that card's power state is changing
1176  * due to software, hardware, or critical temperature RFKILL */
1177 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1178                                     struct iwl_rx_mem_buffer *rxb)
1179 {
1180         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1181         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1182         unsigned long status = priv->status;
1183
1184         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1185                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1186                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1187
1188         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1189                      RF_CARD_DISABLED)) {
1190
1191                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1192                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1193
1194                 if (!iwl_grab_nic_access(priv)) {
1195                         iwl_write_direct32(
1196                                 priv, HBUS_TARG_MBX_C,
1197                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1198
1199                         iwl_release_nic_access(priv);
1200                 }
1201
1202                 if (!(flags & RXON_CARD_DISABLED)) {
1203                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1204                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1205                         if (!iwl_grab_nic_access(priv)) {
1206                                 iwl_write_direct32(
1207                                         priv, HBUS_TARG_MBX_C,
1208                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1209
1210                                 iwl_release_nic_access(priv);
1211                         }
1212                 }
1213
1214                 if (flags & RF_CARD_DISABLED) {
1215                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1216                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1217                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1218                         if (!iwl_grab_nic_access(priv))
1219                                 iwl_release_nic_access(priv);
1220                 }
1221         }
1222
1223         if (flags & HW_CARD_DISABLED)
1224                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1225         else
1226                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1227
1228
1229         if (flags & SW_CARD_DISABLED)
1230                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1231         else
1232                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1233
1234         if (!(flags & RXON_CARD_DISABLED))
1235                 iwl_scan_cancel(priv);
1236
1237         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1238              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1239             (test_bit(STATUS_RF_KILL_SW, &status) !=
1240              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1241                 queue_work(priv->workqueue, &priv->rf_kill);
1242         else
1243                 wake_up_interruptible(&priv->wait_command_queue);
1244 }
1245
1246 /**
1247  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1248  *
1249  * Setup the RX handlers for each of the reply types sent from the uCode
1250  * to the host.
1251  *
1252  * This function chains into the hardware specific files for them to setup
1253  * any hardware specific handlers as well.
1254  */
1255 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1256 {
1257         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1258         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1259         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1260         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1261             iwl4965_rx_spectrum_measure_notif;
1262         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1263         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1264             iwl4965_rx_pm_debug_statistics_notif;
1265         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1266
1267         /*
1268          * The same handler is used for both the REPLY to a discrete
1269          * statistics request from the host as well as for the periodic
1270          * statistics notifications (after received beacons) from the uCode.
1271          */
1272         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1273         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1274
1275         iwl_setup_rx_scan_handlers(priv);
1276
1277         /* status change handler */
1278         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1279
1280         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1281             iwl_rx_missed_beacon_notif;
1282         /* Rx handlers */
1283         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1284         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1285         /* block ack */
1286         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1287         /* Set up hardware specific Rx handlers */
1288         priv->cfg->ops->lib->rx_handler_setup(priv);
1289 }
1290
1291 /*
1292  * this should be called while priv->lock is locked
1293 */
1294 static void __iwl_rx_replenish(struct iwl_priv *priv)
1295 {
1296         iwl_rx_allocate(priv);
1297         iwl_rx_queue_restock(priv);
1298 }
1299
1300
1301 /**
1302  * iwl_rx_handle - Main entry function for receiving responses from uCode
1303  *
1304  * Uses the priv->rx_handlers callback function array to invoke
1305  * the appropriate handlers, including command responses,
1306  * frame-received notifications, and other notifications.
1307  */
1308 void iwl_rx_handle(struct iwl_priv *priv)
1309 {
1310         struct iwl_rx_mem_buffer *rxb;
1311         struct iwl_rx_packet *pkt;
1312         struct iwl_rx_queue *rxq = &priv->rxq;
1313         u32 r, i;
1314         int reclaim;
1315         unsigned long flags;
1316         u8 fill_rx = 0;
1317         u32 count = 8;
1318
1319         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1320          * buffer that the driver may process (last buffer filled by ucode). */
1321         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1322         i = rxq->read;
1323
1324         /* Rx interrupt, but nothing sent from uCode */
1325         if (i == r)
1326                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1327
1328         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1329                 fill_rx = 1;
1330
1331         while (i != r) {
1332                 rxb = rxq->queue[i];
1333
1334                 /* If an RXB doesn't have a Rx queue slot associated with it,
1335                  * then a bug has been introduced in the queue refilling
1336                  * routines -- catch it here */
1337                 BUG_ON(rxb == NULL);
1338
1339                 rxq->queue[i] = NULL;
1340
1341                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1342                                             priv->hw_params.rx_buf_size,
1343                                             PCI_DMA_FROMDEVICE);
1344                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1345
1346                 /* Reclaim a command buffer only if this packet is a response
1347                  *   to a (driver-originated) command.
1348                  * If the packet (e.g. Rx frame) originated from uCode,
1349                  *   there is no command buffer to reclaim.
1350                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1351                  *   but apparently a few don't get set; catch them here. */
1352                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1353                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1354                         (pkt->hdr.cmd != REPLY_RX) &&
1355                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1356                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1357                         (pkt->hdr.cmd != REPLY_TX);
1358
1359                 /* Based on type of command response or notification,
1360                  *   handle those that need handling via function in
1361                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1362                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1363                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1364                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1365                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1366                 } else {
1367                         /* No handling needed */
1368                         IWL_DEBUG(IWL_DL_RX,
1369                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1370                                 r, i, get_cmd_string(pkt->hdr.cmd),
1371                                 pkt->hdr.cmd);
1372                 }
1373
1374                 if (reclaim) {
1375                         /* Invoke any callbacks, transfer the skb to caller, and
1376                          * fire off the (possibly) blocking iwl_send_cmd()
1377                          * as we reclaim the driver command queue */
1378                         if (rxb && rxb->skb)
1379                                 iwl_tx_cmd_complete(priv, rxb);
1380                         else
1381                                 IWL_WARNING("Claim null rxb?\n");
1382                 }
1383
1384                 /* For now we just don't re-use anything.  We can tweak this
1385                  * later to try and re-use notification packets and SKBs that
1386                  * fail to Rx correctly */
1387                 if (rxb->skb != NULL) {
1388                         priv->alloc_rxb_skb--;
1389                         dev_kfree_skb_any(rxb->skb);
1390                         rxb->skb = NULL;
1391                 }
1392
1393                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1394                                  priv->hw_params.rx_buf_size,
1395                                  PCI_DMA_FROMDEVICE);
1396                 spin_lock_irqsave(&rxq->lock, flags);
1397                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1398                 spin_unlock_irqrestore(&rxq->lock, flags);
1399                 i = (i + 1) & RX_QUEUE_MASK;
1400                 /* If there are a lot of unused frames,
1401                  * restock the Rx queue so ucode wont assert. */
1402                 if (fill_rx) {
1403                         count++;
1404                         if (count >= 8) {
1405                                 priv->rxq.read = i;
1406                                 __iwl_rx_replenish(priv);
1407                                 count = 0;
1408                         }
1409                 }
1410         }
1411
1412         /* Backtrack one entry */
1413         priv->rxq.read = i;
1414         iwl_rx_queue_restock(priv);
1415 }
1416
1417 #ifdef CONFIG_IWLWIFI_DEBUG
1418 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1419 {
1420         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1421         DECLARE_MAC_BUF(mac);
1422
1423         IWL_DEBUG_RADIO("RX CONFIG:\n");
1424         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1425         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1426         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1427         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1428                         le32_to_cpu(rxon->filter_flags));
1429         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1430         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1431                         rxon->ofdm_basic_rates);
1432         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1433         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1434                         print_mac(mac, rxon->node_addr));
1435         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1436                         print_mac(mac, rxon->bssid_addr));
1437         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1438 }
1439 #endif
1440
1441 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1442 {
1443         IWL_DEBUG_ISR("Enabling interrupts\n");
1444         set_bit(STATUS_INT_ENABLED, &priv->status);
1445         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1446 }
1447
1448 /* call this function to flush any scheduled tasklet */
1449 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1450 {
1451         /* wait to make sure we flush pedding tasklet*/
1452         synchronize_irq(priv->pci_dev->irq);
1453         tasklet_kill(&priv->irq_tasklet);
1454 }
1455
1456 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1457 {
1458         clear_bit(STATUS_INT_ENABLED, &priv->status);
1459
1460         /* disable interrupts from uCode/NIC to host */
1461         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1462
1463         /* acknowledge/clear/reset any interrupts still pending
1464          * from uCode or flow handler (Rx/Tx DMA) */
1465         iwl_write32(priv, CSR_INT, 0xffffffff);
1466         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1467         IWL_DEBUG_ISR("Disabled interrupts\n");
1468 }
1469
1470
1471 /**
1472  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1473  */
1474 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1475 {
1476         /* Set the FW error flag -- cleared on iwl4965_down */
1477         set_bit(STATUS_FW_ERROR, &priv->status);
1478
1479         /* Cancel currently queued command. */
1480         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1481
1482 #ifdef CONFIG_IWLWIFI_DEBUG
1483         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1484                 iwl_dump_nic_error_log(priv);
1485                 iwl_dump_nic_event_log(priv);
1486                 iwl4965_print_rx_config_cmd(priv);
1487         }
1488 #endif
1489
1490         wake_up_interruptible(&priv->wait_command_queue);
1491
1492         /* Keep the restart process from trying to send host
1493          * commands by clearing the INIT status bit */
1494         clear_bit(STATUS_READY, &priv->status);
1495
1496         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1497                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1498                           "Restarting adapter due to uCode error.\n");
1499
1500                 if (iwl_is_associated(priv)) {
1501                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1502                                sizeof(priv->recovery_rxon));
1503                         priv->error_recovering = 1;
1504                 }
1505                 if (priv->cfg->mod_params->restart_fw)
1506                         queue_work(priv->workqueue, &priv->restart);
1507         }
1508 }
1509
1510 static void iwl4965_error_recovery(struct iwl_priv *priv)
1511 {
1512         unsigned long flags;
1513
1514         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1515                sizeof(priv->staging_rxon));
1516         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1517         iwl4965_commit_rxon(priv);
1518
1519         iwl_rxon_add_station(priv, priv->bssid, 1);
1520
1521         spin_lock_irqsave(&priv->lock, flags);
1522         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1523         priv->error_recovering = 0;
1524         spin_unlock_irqrestore(&priv->lock, flags);
1525 }
1526
1527 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1528 {
1529         u32 inta, handled = 0;
1530         u32 inta_fh;
1531         unsigned long flags;
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533         u32 inta_mask;
1534 #endif
1535
1536         spin_lock_irqsave(&priv->lock, flags);
1537
1538         /* Ack/clear/reset pending uCode interrupts.
1539          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1540          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1541         inta = iwl_read32(priv, CSR_INT);
1542         iwl_write32(priv, CSR_INT, inta);
1543
1544         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1545          * Any new interrupts that happen after this, either while we're
1546          * in this tasklet, or later, will show up in next ISR/tasklet. */
1547         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1548         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1549
1550 #ifdef CONFIG_IWLWIFI_DEBUG
1551         if (priv->debug_level & IWL_DL_ISR) {
1552                 /* just for debug */
1553                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1554                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1555                               inta, inta_mask, inta_fh);
1556         }
1557 #endif
1558
1559         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1560          * atomic, make sure that inta covers all the interrupts that
1561          * we've discovered, even if FH interrupt came in just after
1562          * reading CSR_INT. */
1563         if (inta_fh & CSR49_FH_INT_RX_MASK)
1564                 inta |= CSR_INT_BIT_FH_RX;
1565         if (inta_fh & CSR49_FH_INT_TX_MASK)
1566                 inta |= CSR_INT_BIT_FH_TX;
1567
1568         /* Now service all interrupt bits discovered above. */
1569         if (inta & CSR_INT_BIT_HW_ERR) {
1570                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1571
1572                 /* Tell the device to stop sending interrupts */
1573                 iwl4965_disable_interrupts(priv);
1574
1575                 iwl4965_irq_handle_error(priv);
1576
1577                 handled |= CSR_INT_BIT_HW_ERR;
1578
1579                 spin_unlock_irqrestore(&priv->lock, flags);
1580
1581                 return;
1582         }
1583
1584 #ifdef CONFIG_IWLWIFI_DEBUG
1585         if (priv->debug_level & (IWL_DL_ISR)) {
1586                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1587                 if (inta & CSR_INT_BIT_SCD)
1588                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1589                                       "the frame/frames.\n");
1590
1591                 /* Alive notification via Rx interrupt will do the real work */
1592                 if (inta & CSR_INT_BIT_ALIVE)
1593                         IWL_DEBUG_ISR("Alive interrupt\n");
1594         }
1595 #endif
1596         /* Safely ignore these bits for debug checks below */
1597         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1598
1599         /* HW RF KILL switch toggled */
1600         if (inta & CSR_INT_BIT_RF_KILL) {
1601                 int hw_rf_kill = 0;
1602                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1603                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1604                         hw_rf_kill = 1;
1605
1606                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1607                                 hw_rf_kill ? "disable radio":"enable radio");
1608
1609                 /* Queue restart only if RF_KILL switch was set to "kill"
1610                  *   when we loaded driver, and is now set to "enable".
1611                  * After we're Alive, RF_KILL gets handled by
1612                  *   iwl4965_rx_card_state_notif() */
1613                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1614                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1615                         queue_work(priv->workqueue, &priv->restart);
1616                 }
1617
1618                 handled |= CSR_INT_BIT_RF_KILL;
1619         }
1620
1621         /* Chip got too hot and stopped itself */
1622         if (inta & CSR_INT_BIT_CT_KILL) {
1623                 IWL_ERROR("Microcode CT kill error detected.\n");
1624                 handled |= CSR_INT_BIT_CT_KILL;
1625         }
1626
1627         /* Error detected by uCode */
1628         if (inta & CSR_INT_BIT_SW_ERR) {
1629                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1630                           inta);
1631                 iwl4965_irq_handle_error(priv);
1632                 handled |= CSR_INT_BIT_SW_ERR;
1633         }
1634
1635         /* uCode wakes up after power-down sleep */
1636         if (inta & CSR_INT_BIT_WAKEUP) {
1637                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1638                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1639                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1640                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1641                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1642                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1643                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1644                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1645
1646                 handled |= CSR_INT_BIT_WAKEUP;
1647         }
1648
1649         /* All uCode command responses, including Tx command responses,
1650          * Rx "responses" (frame-received notification), and other
1651          * notifications from uCode come through here*/
1652         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1653                 iwl_rx_handle(priv);
1654                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1655         }
1656
1657         if (inta & CSR_INT_BIT_FH_TX) {
1658                 IWL_DEBUG_ISR("Tx interrupt\n");
1659                 handled |= CSR_INT_BIT_FH_TX;
1660                 /* FH finished to write, send event */
1661                 priv->ucode_write_complete = 1;
1662                 wake_up_interruptible(&priv->wait_command_queue);
1663         }
1664
1665         if (inta & ~handled)
1666                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1667
1668         if (inta & ~CSR_INI_SET_MASK) {
1669                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1670                          inta & ~CSR_INI_SET_MASK);
1671                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1672         }
1673
1674         /* Re-enable all interrupts */
1675         /* only Re-enable if diabled by irq */
1676         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1677                 iwl4965_enable_interrupts(priv);
1678
1679 #ifdef CONFIG_IWLWIFI_DEBUG
1680         if (priv->debug_level & (IWL_DL_ISR)) {
1681                 inta = iwl_read32(priv, CSR_INT);
1682                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1683                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1684                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1685                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1686         }
1687 #endif
1688         spin_unlock_irqrestore(&priv->lock, flags);
1689 }
1690
1691 static irqreturn_t iwl4965_isr(int irq, void *data)
1692 {
1693         struct iwl_priv *priv = data;
1694         u32 inta, inta_mask;
1695         u32 inta_fh;
1696         if (!priv)
1697                 return IRQ_NONE;
1698
1699         spin_lock(&priv->lock);
1700
1701         /* Disable (but don't clear!) interrupts here to avoid
1702          *    back-to-back ISRs and sporadic interrupts from our NIC.
1703          * If we have something to service, the tasklet will re-enable ints.
1704          * If we *don't* have something, we'll re-enable before leaving here. */
1705         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1706         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1707
1708         /* Discover which interrupts are active/pending */
1709         inta = iwl_read32(priv, CSR_INT);
1710         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1711
1712         /* Ignore interrupt if there's nothing in NIC to service.
1713          * This may be due to IRQ shared with another device,
1714          * or due to sporadic interrupts thrown from our NIC. */
1715         if (!inta && !inta_fh) {
1716                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1717                 goto none;
1718         }
1719
1720         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1721                 /* Hardware disappeared. It might have already raised
1722                  * an interrupt */
1723                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1724                 goto unplugged;
1725         }
1726
1727         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1728                       inta, inta_mask, inta_fh);
1729
1730         inta &= ~CSR_INT_BIT_SCD;
1731
1732         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1733         if (likely(inta || inta_fh))
1734                 tasklet_schedule(&priv->irq_tasklet);
1735
1736  unplugged:
1737         spin_unlock(&priv->lock);
1738         return IRQ_HANDLED;
1739
1740  none:
1741         /* re-enable interrupts here since we don't have anything to service. */
1742         /* only Re-enable if diabled by irq */
1743         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1744                 iwl4965_enable_interrupts(priv);
1745         spin_unlock(&priv->lock);
1746         return IRQ_NONE;
1747 }
1748
1749 /******************************************************************************
1750  *
1751  * uCode download functions
1752  *
1753  ******************************************************************************/
1754
1755 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1756 {
1757         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1758         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1759         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1760         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1761         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1762         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1763 }
1764
1765 static void iwl4965_nic_start(struct iwl_priv *priv)
1766 {
1767         /* Remove all resets to allow NIC to operate */
1768         iwl_write32(priv, CSR_RESET, 0);
1769 }
1770
1771
1772 /**
1773  * iwl4965_read_ucode - Read uCode images from disk file.
1774  *
1775  * Copy into buffers for card to fetch via bus-mastering
1776  */
1777 static int iwl4965_read_ucode(struct iwl_priv *priv)
1778 {
1779         struct iwl_ucode *ucode;
1780         int ret;
1781         const struct firmware *ucode_raw;
1782         const char *name = priv->cfg->fw_name;
1783         u8 *src;
1784         size_t len;
1785         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1786
1787         /* Ask kernel firmware_class module to get the boot firmware off disk.
1788          * request_firmware() is synchronous, file is in memory on return. */
1789         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1790         if (ret < 0) {
1791                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1792                                         name, ret);
1793                 goto error;
1794         }
1795
1796         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1797                        name, ucode_raw->size);
1798
1799         /* Make sure that we got at least our header! */
1800         if (ucode_raw->size < sizeof(*ucode)) {
1801                 IWL_ERROR("File size way too small!\n");
1802                 ret = -EINVAL;
1803                 goto err_release;
1804         }
1805
1806         /* Data from ucode file:  header followed by uCode images */
1807         ucode = (void *)ucode_raw->data;
1808
1809         ver = le32_to_cpu(ucode->ver);
1810         inst_size = le32_to_cpu(ucode->inst_size);
1811         data_size = le32_to_cpu(ucode->data_size);
1812         init_size = le32_to_cpu(ucode->init_size);
1813         init_data_size = le32_to_cpu(ucode->init_data_size);
1814         boot_size = le32_to_cpu(ucode->boot_size);
1815
1816         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1817         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1818                        inst_size);
1819         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1820                        data_size);
1821         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1822                        init_size);
1823         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1824                        init_data_size);
1825         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1826                        boot_size);
1827
1828         /* Verify size of file vs. image size info in file's header */
1829         if (ucode_raw->size < sizeof(*ucode) +
1830                 inst_size + data_size + init_size +
1831                 init_data_size + boot_size) {
1832
1833                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1834                                (int)ucode_raw->size);
1835                 ret = -EINVAL;
1836                 goto err_release;
1837         }
1838
1839         /* Verify that uCode images will fit in card's SRAM */
1840         if (inst_size > priv->hw_params.max_inst_size) {
1841                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1842                                inst_size);
1843                 ret = -EINVAL;
1844                 goto err_release;
1845         }
1846
1847         if (data_size > priv->hw_params.max_data_size) {
1848                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1849                                 data_size);
1850                 ret = -EINVAL;
1851                 goto err_release;
1852         }
1853         if (init_size > priv->hw_params.max_inst_size) {
1854                 IWL_DEBUG_INFO
1855                     ("uCode init instr len %d too large to fit in\n",
1856                       init_size);
1857                 ret = -EINVAL;
1858                 goto err_release;
1859         }
1860         if (init_data_size > priv->hw_params.max_data_size) {
1861                 IWL_DEBUG_INFO
1862                     ("uCode init data len %d too large to fit in\n",
1863                       init_data_size);
1864                 ret = -EINVAL;
1865                 goto err_release;
1866         }
1867         if (boot_size > priv->hw_params.max_bsm_size) {
1868                 IWL_DEBUG_INFO
1869                     ("uCode boot instr len %d too large to fit in\n",
1870                       boot_size);
1871                 ret = -EINVAL;
1872                 goto err_release;
1873         }
1874
1875         /* Allocate ucode buffers for card's bus-master loading ... */
1876
1877         /* Runtime instructions and 2 copies of data:
1878          * 1) unmodified from disk
1879          * 2) backup cache for save/restore during power-downs */
1880         priv->ucode_code.len = inst_size;
1881         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1882
1883         priv->ucode_data.len = data_size;
1884         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1885
1886         priv->ucode_data_backup.len = data_size;
1887         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1888
1889         /* Initialization instructions and data */
1890         if (init_size && init_data_size) {
1891                 priv->ucode_init.len = init_size;
1892                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1893
1894                 priv->ucode_init_data.len = init_data_size;
1895                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1896
1897                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1898                         goto err_pci_alloc;
1899         }
1900
1901         /* Bootstrap (instructions only, no data) */
1902         if (boot_size) {
1903                 priv->ucode_boot.len = boot_size;
1904                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1905
1906                 if (!priv->ucode_boot.v_addr)
1907                         goto err_pci_alloc;
1908         }
1909
1910         /* Copy images into buffers for card's bus-master reads ... */
1911
1912         /* Runtime instructions (first block of data in file) */
1913         src = &ucode->data[0];
1914         len = priv->ucode_code.len;
1915         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1916         memcpy(priv->ucode_code.v_addr, src, len);
1917         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1918                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1919
1920         /* Runtime data (2nd block)
1921          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1922         src = &ucode->data[inst_size];
1923         len = priv->ucode_data.len;
1924         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1925         memcpy(priv->ucode_data.v_addr, src, len);
1926         memcpy(priv->ucode_data_backup.v_addr, src, len);
1927
1928         /* Initialization instructions (3rd block) */
1929         if (init_size) {
1930                 src = &ucode->data[inst_size + data_size];
1931                 len = priv->ucode_init.len;
1932                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1933                                 len);
1934                 memcpy(priv->ucode_init.v_addr, src, len);
1935         }
1936
1937         /* Initialization data (4th block) */
1938         if (init_data_size) {
1939                 src = &ucode->data[inst_size + data_size + init_size];
1940                 len = priv->ucode_init_data.len;
1941                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1942                                len);
1943                 memcpy(priv->ucode_init_data.v_addr, src, len);
1944         }
1945
1946         /* Bootstrap instructions (5th block) */
1947         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1948         len = priv->ucode_boot.len;
1949         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1950         memcpy(priv->ucode_boot.v_addr, src, len);
1951
1952         /* We have our copies now, allow OS release its copies */
1953         release_firmware(ucode_raw);
1954         return 0;
1955
1956  err_pci_alloc:
1957         IWL_ERROR("failed to allocate pci memory\n");
1958         ret = -ENOMEM;
1959         iwl4965_dealloc_ucode_pci(priv);
1960
1961  err_release:
1962         release_firmware(ucode_raw);
1963
1964  error:
1965         return ret;
1966 }
1967
1968 /**
1969  * iwl_alive_start - called after REPLY_ALIVE notification received
1970  *                   from protocol/runtime uCode (initialization uCode's
1971  *                   Alive gets handled by iwl_init_alive_start()).
1972  */
1973 static void iwl_alive_start(struct iwl_priv *priv)
1974 {
1975         int ret = 0;
1976
1977         IWL_DEBUG_INFO("Runtime Alive received.\n");
1978
1979         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1980                 /* We had an error bringing up the hardware, so take it
1981                  * all the way back down so we can try again */
1982                 IWL_DEBUG_INFO("Alive failed.\n");
1983                 goto restart;
1984         }
1985
1986         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1987          * This is a paranoid check, because we would not have gotten the
1988          * "runtime" alive if code weren't properly loaded.  */
1989         if (iwl_verify_ucode(priv)) {
1990                 /* Runtime instruction load was bad;
1991                  * take it all the way back down so we can try again */
1992                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1993                 goto restart;
1994         }
1995
1996         iwl_clear_stations_table(priv);
1997         ret = priv->cfg->ops->lib->alive_notify(priv);
1998         if (ret) {
1999                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2000                             ret);
2001                 goto restart;
2002         }
2003
2004         /* After the ALIVE response, we can send host commands to 4965 uCode */
2005         set_bit(STATUS_ALIVE, &priv->status);
2006
2007         if (iwl_is_rfkill(priv))
2008                 return;
2009
2010         ieee80211_wake_queues(priv->hw);
2011
2012         priv->active_rate = priv->rates_mask;
2013         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2014
2015         if (iwl_is_associated(priv)) {
2016                 struct iwl_rxon_cmd *active_rxon =
2017                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2018
2019                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2020                        sizeof(priv->staging_rxon));
2021                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2022         } else {
2023                 /* Initialize our rx_config data */
2024                 iwl4965_connection_init_rx_config(priv);
2025                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2026         }
2027
2028         /* Configure Bluetooth device coexistence support */
2029         iwl4965_send_bt_config(priv);
2030
2031         iwl_reset_run_time_calib(priv);
2032
2033         /* Configure the adapter for unassociated operation */
2034         iwl4965_commit_rxon(priv);
2035
2036         /* At this point, the NIC is initialized and operational */
2037         iwl_rf_kill_ct_config(priv);
2038
2039         iwl_leds_register(priv);
2040
2041         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2042         set_bit(STATUS_READY, &priv->status);
2043         wake_up_interruptible(&priv->wait_command_queue);
2044
2045         if (priv->error_recovering)
2046                 iwl4965_error_recovery(priv);
2047
2048         iwl_power_update_mode(priv, 1);
2049         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2050
2051         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2052                 iwl4965_set_mode(priv, priv->iw_mode);
2053
2054         return;
2055
2056  restart:
2057         queue_work(priv->workqueue, &priv->restart);
2058 }
2059
2060 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2061
2062 static void __iwl4965_down(struct iwl_priv *priv)
2063 {
2064         unsigned long flags;
2065         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2066
2067         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2068
2069         if (!exit_pending)
2070                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2071
2072         iwl_leds_unregister(priv);
2073
2074         iwl_clear_stations_table(priv);
2075
2076         /* Unblock any waiting calls */
2077         wake_up_interruptible_all(&priv->wait_command_queue);
2078
2079         /* Wipe out the EXIT_PENDING status bit if we are not actually
2080          * exiting the module */
2081         if (!exit_pending)
2082                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2083
2084         /* stop and reset the on-board processor */
2085         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2086
2087         /* tell the device to stop sending interrupts */
2088         spin_lock_irqsave(&priv->lock, flags);
2089         iwl4965_disable_interrupts(priv);
2090         spin_unlock_irqrestore(&priv->lock, flags);
2091         iwl_synchronize_irq(priv);
2092
2093         if (priv->mac80211_registered)
2094                 ieee80211_stop_queues(priv->hw);
2095
2096         /* If we have not previously called iwl4965_init() then
2097          * clear all bits but the RF Kill and SUSPEND bits and return */
2098         if (!iwl_is_init(priv)) {
2099                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2100                                         STATUS_RF_KILL_HW |
2101                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2102                                         STATUS_RF_KILL_SW |
2103                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2104                                         STATUS_GEO_CONFIGURED |
2105                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2106                                         STATUS_IN_SUSPEND |
2107                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2108                                         STATUS_EXIT_PENDING;
2109                 goto exit;
2110         }
2111
2112         /* ...otherwise clear out all the status bits but the RF Kill and
2113          * SUSPEND bits and continue taking the NIC down. */
2114         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2115                                 STATUS_RF_KILL_HW |
2116                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2117                                 STATUS_RF_KILL_SW |
2118                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2119                                 STATUS_GEO_CONFIGURED |
2120                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2121                                 STATUS_IN_SUSPEND |
2122                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2123                                 STATUS_FW_ERROR |
2124                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2125                                 STATUS_EXIT_PENDING;
2126
2127         spin_lock_irqsave(&priv->lock, flags);
2128         iwl_clear_bit(priv, CSR_GP_CNTRL,
2129                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2130         spin_unlock_irqrestore(&priv->lock, flags);
2131
2132         iwl_txq_ctx_stop(priv);
2133         iwl_rxq_stop(priv);
2134
2135         spin_lock_irqsave(&priv->lock, flags);
2136         if (!iwl_grab_nic_access(priv)) {
2137                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2138                                          APMG_CLK_VAL_DMA_CLK_RQT);
2139                 iwl_release_nic_access(priv);
2140         }
2141         spin_unlock_irqrestore(&priv->lock, flags);
2142
2143         udelay(5);
2144
2145         /* FIXME: apm_ops.suspend(priv) */
2146         priv->cfg->ops->lib->apm_ops.reset(priv);
2147         priv->cfg->ops->lib->free_shared_mem(priv);
2148
2149  exit:
2150         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2151
2152         if (priv->ibss_beacon)
2153                 dev_kfree_skb(priv->ibss_beacon);
2154         priv->ibss_beacon = NULL;
2155
2156         /* clear out any free frames */
2157         iwl_clear_free_frames(priv);
2158 }
2159
2160 static void iwl4965_down(struct iwl_priv *priv)
2161 {
2162         mutex_lock(&priv->mutex);
2163         __iwl4965_down(priv);
2164         mutex_unlock(&priv->mutex);
2165
2166         iwl_cancel_deferred_work(priv);
2167 }
2168
2169 #define MAX_HW_RESTARTS 5
2170
2171 static int __iwl4965_up(struct iwl_priv *priv)
2172 {
2173         int i;
2174         int ret;
2175
2176         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2177                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2178                 return -EIO;
2179         }
2180
2181         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2182                 IWL_ERROR("ucode not available for device bringup\n");
2183                 return -EIO;
2184         }
2185
2186         /* If platform's RF_KILL switch is NOT set to KILL */
2187         if (iwl_read32(priv, CSR_GP_CNTRL) &
2188                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2189                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2190         else
2191                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2192
2193         if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2194             iwl_is_rfkill(priv)) {
2195                 iwl_rfkill_set_hw_state(priv);
2196                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2197                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2198                 return -ENODEV;
2199         }
2200
2201         iwl_rfkill_set_hw_state(priv);
2202         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2203
2204         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2205         if (ret) {
2206                 IWL_ERROR("Unable to allocate shared memory\n");
2207                 return ret;
2208         }
2209
2210         ret = iwl_hw_nic_init(priv);
2211         if (ret) {
2212                 IWL_ERROR("Unable to init nic\n");
2213                 return ret;
2214         }
2215
2216         /* make sure rfkill handshake bits are cleared */
2217         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2218         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2219                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2220
2221         /* clear (again), then enable host interrupts */
2222         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2223         iwl4965_enable_interrupts(priv);
2224
2225         /* really make sure rfkill handshake bits are cleared */
2226         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2227         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2228
2229         /* Copy original ucode data image from disk into backup cache.
2230          * This will be used to initialize the on-board processor's
2231          * data SRAM for a clean start when the runtime program first loads. */
2232         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2233                priv->ucode_data.len);
2234
2235         /* We return success when we resume from suspend and rf_kill is on. */
2236         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2237             test_bit(STATUS_RF_KILL_SW, &priv->status))
2238                 return 0;
2239
2240         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2241
2242                 iwl_clear_stations_table(priv);
2243
2244                 /* load bootstrap state machine,
2245                  * load bootstrap program into processor's memory,
2246                  * prepare to load the "initialize" uCode */
2247                 ret = priv->cfg->ops->lib->load_ucode(priv);
2248
2249                 if (ret) {
2250                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2251                         continue;
2252                 }
2253
2254                 /* Clear out the uCode error bit if it is set */
2255                 clear_bit(STATUS_FW_ERROR, &priv->status);
2256
2257                 /* start card; "initialize" will load runtime ucode */
2258                 iwl4965_nic_start(priv);
2259
2260                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2261
2262                 return 0;
2263         }
2264
2265         set_bit(STATUS_EXIT_PENDING, &priv->status);
2266         __iwl4965_down(priv);
2267         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2268
2269         /* tried to restart and config the device for as long as our
2270          * patience could withstand */
2271         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2272         return -EIO;
2273 }
2274
2275
2276 /*****************************************************************************
2277  *
2278  * Workqueue callbacks
2279  *
2280  *****************************************************************************/
2281
2282 static void iwl_bg_init_alive_start(struct work_struct *data)
2283 {
2284         struct iwl_priv *priv =
2285             container_of(data, struct iwl_priv, init_alive_start.work);
2286
2287         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2288                 return;
2289
2290         mutex_lock(&priv->mutex);
2291         priv->cfg->ops->lib->init_alive_start(priv);
2292         mutex_unlock(&priv->mutex);
2293 }
2294
2295 static void iwl_bg_alive_start(struct work_struct *data)
2296 {
2297         struct iwl_priv *priv =
2298             container_of(data, struct iwl_priv, alive_start.work);
2299
2300         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2301                 return;
2302
2303         mutex_lock(&priv->mutex);
2304         iwl_alive_start(priv);
2305         mutex_unlock(&priv->mutex);
2306 }
2307
2308 static void iwl4965_bg_rf_kill(struct work_struct *work)
2309 {
2310         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2311
2312         wake_up_interruptible(&priv->wait_command_queue);
2313
2314         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2315                 return;
2316
2317         mutex_lock(&priv->mutex);
2318
2319         if (!iwl_is_rfkill(priv)) {
2320                 IWL_DEBUG(IWL_DL_RF_KILL,
2321                           "HW and/or SW RF Kill no longer active, restarting "
2322                           "device\n");
2323                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2324                         queue_work(priv->workqueue, &priv->restart);
2325         } else {
2326                 /* make sure mac80211 stop sending Tx frame */
2327                 if (priv->mac80211_registered)
2328                         ieee80211_stop_queues(priv->hw);
2329
2330                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2331                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2332                                           "disabled by SW switch\n");
2333                 else
2334                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2335                                     "Kill switch must be turned off for "
2336                                     "wireless networking to work.\n");
2337         }
2338         iwl_rfkill_set_hw_state(priv);
2339
2340         mutex_unlock(&priv->mutex);
2341 }
2342
2343 static void iwl4965_bg_set_monitor(struct work_struct *work)
2344 {
2345         struct iwl_priv *priv = container_of(work,
2346                                 struct iwl_priv, set_monitor);
2347         int ret;
2348
2349         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2350
2351         mutex_lock(&priv->mutex);
2352
2353         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2354
2355         if (ret) {
2356                 if (ret == -EAGAIN)
2357                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2358                 else
2359                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2360         }
2361
2362         mutex_unlock(&priv->mutex);
2363 }
2364
2365 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2366 {
2367         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2368                         run_time_calib_work);
2369
2370         mutex_lock(&priv->mutex);
2371
2372         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2373             test_bit(STATUS_SCANNING, &priv->status)) {
2374                 mutex_unlock(&priv->mutex);
2375                 return;
2376         }
2377
2378         if (priv->start_calib) {
2379                 iwl_chain_noise_calibration(priv, &priv->statistics);
2380
2381                 iwl_sensitivity_calibration(priv, &priv->statistics);
2382         }
2383
2384         mutex_unlock(&priv->mutex);
2385         return;
2386 }
2387
2388 static void iwl4965_bg_up(struct work_struct *data)
2389 {
2390         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2391
2392         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2393                 return;
2394
2395         mutex_lock(&priv->mutex);
2396         __iwl4965_up(priv);
2397         mutex_unlock(&priv->mutex);
2398 }
2399
2400 static void iwl4965_bg_restart(struct work_struct *data)
2401 {
2402         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2403
2404         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2405                 return;
2406
2407         iwl4965_down(priv);
2408         queue_work(priv->workqueue, &priv->up);
2409 }
2410
2411 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2412 {
2413         struct iwl_priv *priv =
2414             container_of(data, struct iwl_priv, rx_replenish);
2415
2416         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2417                 return;
2418
2419         mutex_lock(&priv->mutex);
2420         iwl_rx_replenish(priv);
2421         mutex_unlock(&priv->mutex);
2422 }
2423
2424 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2425
2426 static void iwl4965_post_associate(struct iwl_priv *priv)
2427 {
2428         struct ieee80211_conf *conf = NULL;
2429         int ret = 0;
2430         DECLARE_MAC_BUF(mac);
2431
2432         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2433                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2434                 return;
2435         }
2436
2437         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2438                         priv->assoc_id,
2439                         print_mac(mac, priv->active_rxon.bssid_addr));
2440
2441
2442         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2443                 return;
2444
2445
2446         if (!priv->vif || !priv->is_open)
2447                 return;
2448
2449         iwl_scan_cancel_timeout(priv, 200);
2450
2451         conf = ieee80211_get_hw_conf(priv->hw);
2452
2453         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2454         iwl4965_commit_rxon(priv);
2455
2456         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2457         iwl4965_setup_rxon_timing(priv);
2458         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2459                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2460         if (ret)
2461                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2462                             "Attempting to continue.\n");
2463
2464         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2465
2466         if (priv->current_ht_config.is_ht)
2467                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2468
2469         iwl_set_rxon_chain(priv);
2470         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2471
2472         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2473                         priv->assoc_id, priv->beacon_int);
2474
2475         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2476                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2477         else
2478                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2479
2480         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2481                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2482                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2483                 else
2484                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2485
2486                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2487                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2488
2489         }
2490
2491         iwl4965_commit_rxon(priv);
2492
2493         switch (priv->iw_mode) {
2494         case IEEE80211_IF_TYPE_STA:
2495                 break;
2496
2497         case IEEE80211_IF_TYPE_IBSS:
2498
2499                 /* assume default assoc id */
2500                 priv->assoc_id = 1;
2501
2502                 iwl_rxon_add_station(priv, priv->bssid, 0);
2503                 iwl4965_send_beacon_cmd(priv);
2504
2505                 break;
2506
2507         default:
2508                 IWL_ERROR("%s Should not be called in %d mode\n",
2509                                 __FUNCTION__, priv->iw_mode);
2510                 break;
2511         }
2512
2513         /* Enable Rx differential gain and sensitivity calibrations */
2514         iwl_chain_noise_reset(priv);
2515         priv->start_calib = 1;
2516
2517         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2518                 priv->assoc_station_added = 1;
2519
2520         iwl4965_activate_qos(priv, 0);
2521
2522         iwl_power_update_mode(priv, 0);
2523         /* we have just associated, don't start scan too early */
2524         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2525 }
2526
2527
2528 static void iwl4965_bg_post_associate(struct work_struct *data)
2529 {
2530         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2531                                              post_associate.work);
2532
2533         mutex_lock(&priv->mutex);
2534         iwl4965_post_associate(priv);
2535         mutex_unlock(&priv->mutex);
2536
2537 }
2538
2539 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2540
2541 static void iwl_bg_scan_completed(struct work_struct *work)
2542 {
2543         struct iwl_priv *priv =
2544             container_of(work, struct iwl_priv, scan_completed);
2545
2546         IWL_DEBUG_SCAN("SCAN complete scan\n");
2547
2548         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2549                 return;
2550
2551         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2552                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2553
2554         ieee80211_scan_completed(priv->hw);
2555
2556         /* Since setting the TXPOWER may have been deferred while
2557          * performing the scan, fire one off */
2558         mutex_lock(&priv->mutex);
2559         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2560         mutex_unlock(&priv->mutex);
2561 }
2562
2563 /*****************************************************************************
2564  *
2565  * mac80211 entry point functions
2566  *
2567  *****************************************************************************/
2568
2569 #define UCODE_READY_TIMEOUT     (2 * HZ)
2570
2571 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2572 {
2573         struct iwl_priv *priv = hw->priv;
2574         int ret;
2575
2576         IWL_DEBUG_MAC80211("enter\n");
2577
2578         if (pci_enable_device(priv->pci_dev)) {
2579                 IWL_ERROR("Fail to pci_enable_device\n");
2580                 return -ENODEV;
2581         }
2582         pci_restore_state(priv->pci_dev);
2583         pci_enable_msi(priv->pci_dev);
2584
2585         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2586                           DRV_NAME, priv);
2587         if (ret) {
2588                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2589                 goto out_disable_msi;
2590         }
2591
2592         /* we should be verifying the device is ready to be opened */
2593         mutex_lock(&priv->mutex);
2594
2595         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2596         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2597          * ucode filename and max sizes are card-specific. */
2598
2599         if (!priv->ucode_code.len) {
2600                 ret = iwl4965_read_ucode(priv);
2601                 if (ret) {
2602                         IWL_ERROR("Could not read microcode: %d\n", ret);
2603                         mutex_unlock(&priv->mutex);
2604                         goto out_release_irq;
2605                 }
2606         }
2607
2608         ret = __iwl4965_up(priv);
2609
2610         mutex_unlock(&priv->mutex);
2611
2612         if (ret)
2613                 goto out_release_irq;
2614
2615         IWL_DEBUG_INFO("Start UP work done.\n");
2616
2617         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2618                 return 0;
2619
2620         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2621          * mac80211 will not be run successfully. */
2622         if (priv->ucode_type == UCODE_RT) {
2623                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2624                                 test_bit(STATUS_READY, &priv->status),
2625                                 UCODE_READY_TIMEOUT);
2626                 if (!ret) {
2627                         if (!test_bit(STATUS_READY, &priv->status)) {
2628                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2629                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
2630                                 ret = -ETIMEDOUT;
2631                                 goto out_release_irq;
2632                         }
2633                 }
2634
2635                 priv->is_open = 1;
2636         }
2637         IWL_DEBUG_MAC80211("leave\n");
2638         return 0;
2639
2640 out_release_irq:
2641         free_irq(priv->pci_dev->irq, priv);
2642 out_disable_msi:
2643         pci_disable_msi(priv->pci_dev);
2644         pci_disable_device(priv->pci_dev);
2645         priv->is_open = 0;
2646         IWL_DEBUG_MAC80211("leave - failed\n");
2647         return ret;
2648 }
2649
2650 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2651 {
2652         struct iwl_priv *priv = hw->priv;
2653
2654         IWL_DEBUG_MAC80211("enter\n");
2655
2656         if (!priv->is_open) {
2657                 IWL_DEBUG_MAC80211("leave - skip\n");
2658                 return;
2659         }
2660
2661         priv->is_open = 0;
2662
2663         if (iwl_is_ready_rf(priv)) {
2664                 /* stop mac, cancel any scan request and clear
2665                  * RXON_FILTER_ASSOC_MSK BIT
2666                  */
2667                 mutex_lock(&priv->mutex);
2668                 iwl_scan_cancel_timeout(priv, 100);
2669                 cancel_delayed_work(&priv->post_associate);
2670                 mutex_unlock(&priv->mutex);
2671         }
2672
2673         iwl4965_down(priv);
2674
2675         flush_workqueue(priv->workqueue);
2676         free_irq(priv->pci_dev->irq, priv);
2677         pci_disable_msi(priv->pci_dev);
2678         pci_save_state(priv->pci_dev);
2679         pci_disable_device(priv->pci_dev);
2680
2681         IWL_DEBUG_MAC80211("leave\n");
2682 }
2683
2684 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2685 {
2686         struct iwl_priv *priv = hw->priv;
2687
2688         IWL_DEBUG_MAC80211("enter\n");
2689
2690         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2691                 IWL_DEBUG_MAC80211("leave - monitor\n");
2692                 return -1;
2693         }
2694
2695         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2696                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2697
2698         if (iwl_tx_skb(priv, skb))
2699                 dev_kfree_skb_any(skb);
2700
2701         IWL_DEBUG_MAC80211("leave\n");
2702         return 0;
2703 }
2704
2705 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2706                                  struct ieee80211_if_init_conf *conf)
2707 {
2708         struct iwl_priv *priv = hw->priv;
2709         unsigned long flags;
2710         DECLARE_MAC_BUF(mac);
2711
2712         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2713
2714         if (priv->vif) {
2715                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2716                 return -EOPNOTSUPP;
2717         }
2718
2719         spin_lock_irqsave(&priv->lock, flags);
2720         priv->vif = conf->vif;
2721
2722         spin_unlock_irqrestore(&priv->lock, flags);
2723
2724         mutex_lock(&priv->mutex);
2725
2726         if (conf->mac_addr) {
2727                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2728                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2729         }
2730
2731         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2732                 /* we are not ready, will run again when ready */
2733                 set_bit(STATUS_MODE_PENDING, &priv->status);
2734
2735         mutex_unlock(&priv->mutex);
2736
2737         IWL_DEBUG_MAC80211("leave\n");
2738         return 0;
2739 }
2740
2741 /**
2742  * iwl4965_mac_config - mac80211 config callback
2743  *
2744  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2745  * be set inappropriately and the driver currently sets the hardware up to
2746  * use it whenever needed.
2747  */
2748 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2749 {
2750         struct iwl_priv *priv = hw->priv;
2751         const struct iwl_channel_info *ch_info;
2752         unsigned long flags;
2753         int ret = 0;
2754         u16 channel;
2755
2756         mutex_lock(&priv->mutex);
2757         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2758
2759         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2760
2761         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2762                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2763                 goto out;
2764         }
2765
2766         if (!conf->radio_enabled)
2767                 iwl_radio_kill_sw_disable_radio(priv);
2768
2769         if (!iwl_is_ready(priv)) {
2770                 IWL_DEBUG_MAC80211("leave - not ready\n");
2771                 ret = -EIO;
2772                 goto out;
2773         }
2774
2775         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2776                      test_bit(STATUS_SCANNING, &priv->status))) {
2777                 IWL_DEBUG_MAC80211("leave - scanning\n");
2778                 set_bit(STATUS_CONF_PENDING, &priv->status);
2779                 mutex_unlock(&priv->mutex);
2780                 return 0;
2781         }
2782
2783         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2784         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2785         if (!is_channel_valid(ch_info)) {
2786                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2787                 ret = -EINVAL;
2788                 goto out;
2789         }
2790
2791         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2792             !is_channel_ibss(ch_info)) {
2793                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2794                         conf->channel->hw_value, conf->channel->band);
2795                 ret = -EINVAL;
2796                 goto out;
2797         }
2798
2799         spin_lock_irqsave(&priv->lock, flags);
2800
2801         /* if we are switching from ht to 2.4 clear flags
2802          * from any ht related info since 2.4 does not
2803          * support ht */
2804         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2805 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2806             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2807 #endif
2808         )
2809                 priv->staging_rxon.flags = 0;
2810
2811         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2812
2813         iwl_set_flags_for_band(priv, conf->channel->band);
2814
2815         /* The list of supported rates and rate mask can be different
2816          * for each band; since the band may have changed, reset
2817          * the rate mask to what mac80211 lists */
2818         iwl4965_set_rate(priv);
2819
2820         spin_unlock_irqrestore(&priv->lock, flags);
2821
2822 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2823         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2824                 iwl4965_hw_channel_switch(priv, conf->channel);
2825                 goto out;
2826         }
2827 #endif
2828
2829         if (!conf->radio_enabled) {
2830                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2831                 goto out;
2832         }
2833
2834         if (iwl_is_rfkill(priv)) {
2835                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2836                 ret = -EIO;
2837                 goto out;
2838         }
2839
2840         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2841                            priv->tx_power_user_lmt, conf->power_level);
2842
2843         iwl_set_tx_power(priv, conf->power_level, false);
2844
2845         iwl4965_set_rate(priv);
2846
2847         if (memcmp(&priv->active_rxon,
2848                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2849                 iwl4965_commit_rxon(priv);
2850         else
2851                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2852
2853         IWL_DEBUG_MAC80211("leave\n");
2854
2855 out:
2856         clear_bit(STATUS_CONF_PENDING, &priv->status);
2857         mutex_unlock(&priv->mutex);
2858         return ret;
2859 }
2860
2861 static void iwl4965_config_ap(struct iwl_priv *priv)
2862 {
2863         int ret = 0;
2864
2865         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2866                 return;
2867
2868         /* The following should be done only at AP bring up */
2869         if (!(iwl_is_associated(priv))) {
2870
2871                 /* RXON - unassoc (to set timing command) */
2872                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2873                 iwl4965_commit_rxon(priv);
2874
2875                 /* RXON Timing */
2876                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2877                 iwl4965_setup_rxon_timing(priv);
2878                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2879                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2880                 if (ret)
2881                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2882                                         "Attempting to continue.\n");
2883
2884                 iwl_set_rxon_chain(priv);
2885
2886                 /* FIXME: what should be the assoc_id for AP? */
2887                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2888                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2889                         priv->staging_rxon.flags |=
2890                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2891                 else
2892                         priv->staging_rxon.flags &=
2893                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2894
2895                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2896                         if (priv->assoc_capability &
2897                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2898                                 priv->staging_rxon.flags |=
2899                                         RXON_FLG_SHORT_SLOT_MSK;
2900                         else
2901                                 priv->staging_rxon.flags &=
2902                                         ~RXON_FLG_SHORT_SLOT_MSK;
2903
2904                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2905                                 priv->staging_rxon.flags &=
2906                                         ~RXON_FLG_SHORT_SLOT_MSK;
2907                 }
2908                 /* restore RXON assoc */
2909                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2910                 iwl4965_commit_rxon(priv);
2911                 iwl4965_activate_qos(priv, 1);
2912                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2913         }
2914         iwl4965_send_beacon_cmd(priv);
2915
2916         /* FIXME - we need to add code here to detect a totally new
2917          * configuration, reset the AP, unassoc, rxon timing, assoc,
2918          * clear sta table, add BCAST sta... */
2919 }
2920
2921 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2922                                         struct ieee80211_vif *vif,
2923                                     struct ieee80211_if_conf *conf)
2924 {
2925         struct iwl_priv *priv = hw->priv;
2926         DECLARE_MAC_BUF(mac);
2927         unsigned long flags;
2928         int rc;
2929
2930         if (conf == NULL)
2931                 return -EIO;
2932
2933         if (priv->vif != vif) {
2934                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2935                 return 0;
2936         }
2937
2938         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2939             (!conf->beacon || !conf->ssid_len)) {
2940                 IWL_DEBUG_MAC80211
2941                     ("Leaving in AP mode because HostAPD is not ready.\n");
2942                 return 0;
2943         }
2944
2945         if (!iwl_is_alive(priv))
2946                 return -EAGAIN;
2947
2948         mutex_lock(&priv->mutex);
2949
2950         if (conf->bssid)
2951                 IWL_DEBUG_MAC80211("bssid: %s\n",
2952                                    print_mac(mac, conf->bssid));
2953
2954 /*
2955  * very dubious code was here; the probe filtering flag is never set:
2956  *
2957         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2958             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2959  */
2960
2961         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2962                 if (!conf->bssid) {
2963                         conf->bssid = priv->mac_addr;
2964                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2965                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2966                                            print_mac(mac, conf->bssid));
2967                 }
2968                 if (priv->ibss_beacon)
2969                         dev_kfree_skb(priv->ibss_beacon);
2970
2971                 priv->ibss_beacon = conf->beacon;
2972         }
2973
2974         if (iwl_is_rfkill(priv))
2975                 goto done;
2976
2977         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2978             !is_multicast_ether_addr(conf->bssid)) {
2979                 /* If there is currently a HW scan going on in the background
2980                  * then we need to cancel it else the RXON below will fail. */
2981                 if (iwl_scan_cancel_timeout(priv, 100)) {
2982                         IWL_WARNING("Aborted scan still in progress "
2983                                     "after 100ms\n");
2984                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2985                         mutex_unlock(&priv->mutex);
2986                         return -EAGAIN;
2987                 }
2988                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2989
2990                 /* TODO: Audit driver for usage of these members and see
2991                  * if mac80211 deprecates them (priv->bssid looks like it
2992                  * shouldn't be there, but I haven't scanned the IBSS code
2993                  * to verify) - jpk */
2994                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2995
2996                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2997                         iwl4965_config_ap(priv);
2998                 else {
2999                         rc = iwl4965_commit_rxon(priv);
3000                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3001                                 iwl_rxon_add_station(
3002                                         priv, priv->active_rxon.bssid_addr, 1);
3003                 }
3004
3005         } else {
3006                 iwl_scan_cancel_timeout(priv, 100);
3007                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3008                 iwl4965_commit_rxon(priv);
3009         }
3010
3011  done:
3012         spin_lock_irqsave(&priv->lock, flags);
3013         if (!conf->ssid_len)
3014                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3015         else
3016                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3017
3018         priv->essid_len = conf->ssid_len;
3019         spin_unlock_irqrestore(&priv->lock, flags);
3020
3021         IWL_DEBUG_MAC80211("leave\n");
3022         mutex_unlock(&priv->mutex);
3023
3024         return 0;
3025 }
3026
3027 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3028                                  unsigned int changed_flags,
3029                                  unsigned int *total_flags,
3030                                  int mc_count, struct dev_addr_list *mc_list)
3031 {
3032         /*
3033          * XXX: dummy
3034          * see also iwl4965_connection_init_rx_config
3035          */
3036         struct iwl_priv *priv = hw->priv;
3037         int new_flags = 0;
3038         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3039                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3040                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3041                                            IEEE80211_IF_TYPE_MNTR,
3042                                            changed_flags, *total_flags);
3043                         /* queue work 'cuz mac80211 is holding a lock which
3044                          * prevents us from issuing (synchronous) f/w cmds */
3045                         queue_work(priv->workqueue, &priv->set_monitor);
3046                         new_flags &= FIF_PROMISC_IN_BSS |
3047                                      FIF_OTHER_BSS |
3048                                      FIF_ALLMULTI;
3049                 }
3050         }
3051         *total_flags = new_flags;
3052 }
3053
3054 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3055                                      struct ieee80211_if_init_conf *conf)
3056 {
3057         struct iwl_priv *priv = hw->priv;
3058
3059         IWL_DEBUG_MAC80211("enter\n");
3060
3061         mutex_lock(&priv->mutex);
3062
3063         if (iwl_is_ready_rf(priv)) {
3064                 iwl_scan_cancel_timeout(priv, 100);
3065                 cancel_delayed_work(&priv->post_associate);
3066                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3067                 iwl4965_commit_rxon(priv);
3068         }
3069         if (priv->vif == conf->vif) {
3070                 priv->vif = NULL;
3071                 memset(priv->bssid, 0, ETH_ALEN);
3072                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3073                 priv->essid_len = 0;
3074         }
3075         mutex_unlock(&priv->mutex);
3076
3077         IWL_DEBUG_MAC80211("leave\n");
3078
3079 }
3080
3081 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3082 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3083                                      struct ieee80211_vif *vif,
3084                                      struct ieee80211_bss_conf *bss_conf,
3085                                      u32 changes)
3086 {
3087         struct iwl_priv *priv = hw->priv;
3088
3089         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3090
3091         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3092                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3093                                    bss_conf->use_short_preamble);
3094                 if (bss_conf->use_short_preamble)
3095                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3096                 else
3097                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3098         }
3099
3100         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3101                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3102                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3103                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3104                 else
3105                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3106         }
3107
3108         if (changes & BSS_CHANGED_HT) {
3109                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3110                 iwl4965_ht_conf(priv, bss_conf);
3111                 iwl_set_rxon_chain(priv);
3112         }
3113
3114         if (changes & BSS_CHANGED_ASSOC) {
3115                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3116                 /* This should never happen as this function should
3117                  * never be called from interrupt context. */
3118                 if (WARN_ON_ONCE(in_interrupt()))
3119                         return;
3120                 if (bss_conf->assoc) {
3121                         priv->assoc_id = bss_conf->aid;
3122                         priv->beacon_int = bss_conf->beacon_int;
3123                         priv->timestamp = bss_conf->timestamp;
3124                         priv->assoc_capability = bss_conf->assoc_capability;
3125                         priv->next_scan_jiffies = jiffies +
3126                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3127                         mutex_lock(&priv->mutex);
3128                         iwl4965_post_associate(priv);
3129                         mutex_unlock(&priv->mutex);
3130                 } else {
3131                         priv->assoc_id = 0;
3132                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3133                 }
3134         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3135                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3136                         iwl_send_rxon_assoc(priv);
3137         }
3138
3139 }
3140
3141 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3142 {
3143         int rc = 0;
3144         unsigned long flags;
3145         struct iwl_priv *priv = hw->priv;
3146
3147         IWL_DEBUG_MAC80211("enter\n");
3148
3149         mutex_lock(&priv->mutex);
3150         spin_lock_irqsave(&priv->lock, flags);
3151
3152         if (!iwl_is_ready_rf(priv)) {
3153                 rc = -EIO;
3154                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3155                 goto out_unlock;
3156         }
3157
3158         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3159                 rc = -EIO;
3160                 IWL_ERROR("ERROR: APs don't scan\n");
3161                 goto out_unlock;
3162         }
3163
3164         /* we don't schedule scan within next_scan_jiffies period */
3165         if (priv->next_scan_jiffies &&
3166                         time_after(priv->next_scan_jiffies, jiffies)) {
3167                 rc = -EAGAIN;
3168                 goto out_unlock;
3169         }
3170         /* if we just finished scan ask for delay */
3171         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3172                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3173                 rc = -EAGAIN;
3174                 goto out_unlock;
3175         }
3176         if (len) {
3177                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3178                                iwl_escape_essid(ssid, len), (int)len);
3179
3180                 priv->one_direct_scan = 1;
3181                 priv->direct_ssid_len = (u8)
3182                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3183                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3184         } else
3185                 priv->one_direct_scan = 0;
3186
3187         rc = iwl_scan_initiate(priv);
3188
3189         IWL_DEBUG_MAC80211("leave\n");
3190
3191 out_unlock:
3192         spin_unlock_irqrestore(&priv->lock, flags);
3193         mutex_unlock(&priv->mutex);
3194
3195         return rc;
3196 }
3197
3198 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3199                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3200                         u32 iv32, u16 *phase1key)
3201 {
3202         struct iwl_priv *priv = hw->priv;
3203         u8 sta_id = IWL_INVALID_STATION;
3204         unsigned long flags;
3205         __le16 key_flags = 0;
3206         int i;
3207         DECLARE_MAC_BUF(mac);
3208
3209         IWL_DEBUG_MAC80211("enter\n");
3210
3211         sta_id = iwl_find_station(priv, addr);
3212         if (sta_id == IWL_INVALID_STATION) {
3213                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3214                                    print_mac(mac, addr));
3215                 return;
3216         }
3217
3218         iwl_scan_cancel_timeout(priv, 100);
3219
3220         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3221         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3222         key_flags &= ~STA_KEY_FLG_INVALID;
3223
3224         if (sta_id == priv->hw_params.bcast_sta_id)
3225                 key_flags |= STA_KEY_MULTICAST_MSK;
3226
3227         spin_lock_irqsave(&priv->sta_lock, flags);
3228
3229         priv->stations[sta_id].sta.key.key_flags = key_flags;
3230         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3231
3232         for (i = 0; i < 5; i++)
3233                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3234                         cpu_to_le16(phase1key[i]);
3235
3236         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3237         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3238
3239         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3240
3241         spin_unlock_irqrestore(&priv->sta_lock, flags);
3242
3243         IWL_DEBUG_MAC80211("leave\n");
3244 }
3245
3246 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3247                            const u8 *local_addr, const u8 *addr,
3248                            struct ieee80211_key_conf *key)
3249 {
3250         struct iwl_priv *priv = hw->priv;
3251         DECLARE_MAC_BUF(mac);
3252         int ret = 0;
3253         u8 sta_id = IWL_INVALID_STATION;
3254         u8 is_default_wep_key = 0;
3255
3256         IWL_DEBUG_MAC80211("enter\n");
3257
3258         if (priv->hw_params.sw_crypto) {
3259                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3260                 return -EOPNOTSUPP;
3261         }
3262
3263         if (is_zero_ether_addr(addr))
3264                 /* only support pairwise keys */
3265                 return -EOPNOTSUPP;
3266
3267         sta_id = iwl_find_station(priv, addr);
3268         if (sta_id == IWL_INVALID_STATION) {
3269                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3270                                    print_mac(mac, addr));
3271                 return -EINVAL;
3272
3273         }
3274
3275         mutex_lock(&priv->mutex);
3276         iwl_scan_cancel_timeout(priv, 100);
3277         mutex_unlock(&priv->mutex);
3278
3279         /* If we are getting WEP group key and we didn't receive any key mapping
3280          * so far, we are in legacy wep mode (group key only), otherwise we are
3281          * in 1X mode.
3282          * In legacy wep mode, we use another host command to the uCode */
3283         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3284                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3285                 if (cmd == SET_KEY)
3286                         is_default_wep_key = !priv->key_mapping_key;
3287                 else
3288                         is_default_wep_key =
3289                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3290         }
3291
3292         switch (cmd) {
3293         case SET_KEY:
3294                 if (is_default_wep_key)
3295                         ret = iwl_set_default_wep_key(priv, key);
3296                 else
3297                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3298
3299                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3300                 break;
3301         case DISABLE_KEY:
3302                 if (is_default_wep_key)
3303                         ret = iwl_remove_default_wep_key(priv, key);
3304                 else
3305                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3306
3307                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3308                 break;
3309         default:
3310                 ret = -EINVAL;
3311         }
3312
3313         IWL_DEBUG_MAC80211("leave\n");
3314
3315         return ret;
3316 }
3317
3318 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3319                            const struct ieee80211_tx_queue_params *params)
3320 {
3321         struct iwl_priv *priv = hw->priv;
3322         unsigned long flags;
3323         int q;
3324
3325         IWL_DEBUG_MAC80211("enter\n");
3326
3327         if (!iwl_is_ready_rf(priv)) {
3328                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3329                 return -EIO;
3330         }
3331
3332         if (queue >= AC_NUM) {
3333                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3334                 return 0;
3335         }
3336
3337         if (!priv->qos_data.qos_enable) {
3338                 priv->qos_data.qos_active = 0;
3339                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3340                 return 0;
3341         }
3342         q = AC_NUM - 1 - queue;
3343
3344         spin_lock_irqsave(&priv->lock, flags);
3345
3346         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3347         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3348         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3349         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3350                         cpu_to_le16((params->txop * 32));
3351
3352         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3353         priv->qos_data.qos_active = 1;
3354
3355         spin_unlock_irqrestore(&priv->lock, flags);
3356
3357         mutex_lock(&priv->mutex);
3358         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3359                 iwl4965_activate_qos(priv, 1);
3360         else if (priv->assoc_id && iwl_is_associated(priv))
3361                 iwl4965_activate_qos(priv, 0);
3362
3363         mutex_unlock(&priv->mutex);
3364
3365         IWL_DEBUG_MAC80211("leave\n");
3366         return 0;
3367 }
3368
3369 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3370                                 struct ieee80211_tx_queue_stats *stats)
3371 {
3372         struct iwl_priv *priv = hw->priv;
3373         int i, avail;
3374         struct iwl_tx_queue *txq;
3375         struct iwl_queue *q;
3376         unsigned long flags;
3377
3378         IWL_DEBUG_MAC80211("enter\n");
3379
3380         if (!iwl_is_ready_rf(priv)) {
3381                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3382                 return -EIO;
3383         }
3384
3385         spin_lock_irqsave(&priv->lock, flags);
3386
3387         for (i = 0; i < AC_NUM; i++) {
3388                 txq = &priv->txq[i];
3389                 q = &txq->q;
3390                 avail = iwl_queue_space(q);
3391
3392                 stats[i].len = q->n_window - avail;
3393                 stats[i].limit = q->n_window - q->high_mark;
3394                 stats[i].count = q->n_window;
3395
3396         }
3397         spin_unlock_irqrestore(&priv->lock, flags);
3398
3399         IWL_DEBUG_MAC80211("leave\n");
3400
3401         return 0;
3402 }
3403
3404 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3405                              struct ieee80211_low_level_stats *stats)
3406 {
3407         struct iwl_priv *priv = hw->priv;
3408
3409         priv = hw->priv;
3410         IWL_DEBUG_MAC80211("enter\n");
3411         IWL_DEBUG_MAC80211("leave\n");
3412
3413         return 0;
3414 }
3415
3416 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3417 {
3418         struct iwl_priv *priv;
3419
3420         priv = hw->priv;
3421         IWL_DEBUG_MAC80211("enter\n");
3422         IWL_DEBUG_MAC80211("leave\n");
3423
3424         return 0;
3425 }
3426
3427 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3428 {
3429         struct iwl_priv *priv = hw->priv;
3430         unsigned long flags;
3431
3432         mutex_lock(&priv->mutex);
3433         IWL_DEBUG_MAC80211("enter\n");
3434
3435         spin_lock_irqsave(&priv->lock, flags);
3436         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3437         spin_unlock_irqrestore(&priv->lock, flags);
3438
3439         iwl_reset_qos(priv);
3440
3441         cancel_delayed_work(&priv->post_associate);
3442
3443         spin_lock_irqsave(&priv->lock, flags);
3444         priv->assoc_id = 0;
3445         priv->assoc_capability = 0;
3446         priv->assoc_station_added = 0;
3447
3448         /* new association get rid of ibss beacon skb */
3449         if (priv->ibss_beacon)
3450                 dev_kfree_skb(priv->ibss_beacon);
3451
3452         priv->ibss_beacon = NULL;
3453
3454         priv->beacon_int = priv->hw->conf.beacon_int;
3455         priv->timestamp = 0;
3456         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3457                 priv->beacon_int = 0;
3458
3459         spin_unlock_irqrestore(&priv->lock, flags);
3460
3461         if (!iwl_is_ready_rf(priv)) {
3462                 IWL_DEBUG_MAC80211("leave - not ready\n");
3463                 mutex_unlock(&priv->mutex);
3464                 return;
3465         }
3466
3467         /* we are restarting association process
3468          * clear RXON_FILTER_ASSOC_MSK bit
3469          */
3470         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3471                 iwl_scan_cancel_timeout(priv, 100);
3472                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3473                 iwl4965_commit_rxon(priv);
3474         }
3475
3476         iwl_power_update_mode(priv, 0);
3477
3478         /* Per mac80211.h: This is only used in IBSS mode... */
3479         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3480
3481                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3482                 mutex_unlock(&priv->mutex);
3483                 return;
3484         }
3485
3486         iwl4965_set_rate(priv);
3487
3488         mutex_unlock(&priv->mutex);
3489
3490         IWL_DEBUG_MAC80211("leave\n");
3491 }
3492
3493 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3494 {
3495         struct iwl_priv *priv = hw->priv;
3496         unsigned long flags;
3497         __le64 timestamp;
3498
3499         mutex_lock(&priv->mutex);
3500         IWL_DEBUG_MAC80211("enter\n");
3501
3502         if (!iwl_is_ready_rf(priv)) {
3503                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3504                 mutex_unlock(&priv->mutex);
3505                 return -EIO;
3506         }
3507
3508         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3509                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3510                 mutex_unlock(&priv->mutex);
3511                 return -EIO;
3512         }
3513
3514         spin_lock_irqsave(&priv->lock, flags);
3515
3516         if (priv->ibss_beacon)
3517                 dev_kfree_skb(priv->ibss_beacon);
3518
3519         priv->ibss_beacon = skb;
3520
3521         priv->assoc_id = 0;
3522         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3523         priv->timestamp = le64_to_cpu(timestamp) +  (priv->beacon_int * 1000);
3524
3525         IWL_DEBUG_MAC80211("leave\n");
3526         spin_unlock_irqrestore(&priv->lock, flags);
3527
3528         iwl_reset_qos(priv);
3529
3530         iwl4965_post_associate(priv);
3531
3532         mutex_unlock(&priv->mutex);
3533
3534         return 0;
3535 }
3536
3537 /*****************************************************************************
3538  *
3539  * sysfs attributes
3540  *
3541  *****************************************************************************/
3542
3543 #ifdef CONFIG_IWLWIFI_DEBUG
3544
3545 /*
3546  * The following adds a new attribute to the sysfs representation
3547  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3548  * used for controlling the debug level.
3549  *
3550  * See the level definitions in iwl for details.
3551  */
3552
3553 static ssize_t show_debug_level(struct device *d,
3554                                 struct device_attribute *attr, char *buf)
3555 {
3556         struct iwl_priv *priv = d->driver_data;
3557
3558         return sprintf(buf, "0x%08X\n", priv->debug_level);
3559 }
3560 static ssize_t store_debug_level(struct device *d,
3561                                 struct device_attribute *attr,
3562                                  const char *buf, size_t count)
3563 {
3564         struct iwl_priv *priv = d->driver_data;
3565         char *p = (char *)buf;
3566         u32 val;
3567
3568         val = simple_strtoul(p, &p, 0);
3569         if (p == buf)
3570                 printk(KERN_INFO DRV_NAME
3571                        ": %s is not in hex or decimal form.\n", buf);
3572         else
3573                 priv->debug_level = val;
3574
3575         return strnlen(buf, count);
3576 }
3577
3578 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3579                         show_debug_level, store_debug_level);
3580
3581
3582 #endif /* CONFIG_IWLWIFI_DEBUG */
3583
3584
3585 static ssize_t show_version(struct device *d,
3586                                 struct device_attribute *attr, char *buf)
3587 {
3588         struct iwl_priv *priv = d->driver_data;
3589         struct iwl_alive_resp *palive = &priv->card_alive;
3590         ssize_t pos = 0;
3591         u16 eeprom_ver;
3592
3593         if (palive->is_valid)
3594                 pos += sprintf(buf + pos,
3595                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3596                                 "fw type: 0x%01X 0x%01X\n",
3597                                 palive->ucode_major, palive->ucode_minor,
3598                                 palive->sw_rev[0], palive->sw_rev[1],
3599                                 palive->ver_type, palive->ver_subtype);
3600         else
3601                 pos += sprintf(buf + pos, "fw not loaded\n");
3602
3603         if (priv->eeprom) {
3604                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3605                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3606                                  eeprom_ver);
3607         } else {
3608                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3609         }
3610
3611         return pos;
3612 }
3613
3614 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3615
3616 static ssize_t show_temperature(struct device *d,
3617                                 struct device_attribute *attr, char *buf)
3618 {
3619         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3620
3621         if (!iwl_is_alive(priv))
3622                 return -EAGAIN;
3623
3624         return sprintf(buf, "%d\n", priv->temperature);
3625 }
3626
3627 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3628
3629 static ssize_t show_rs_window(struct device *d,
3630                               struct device_attribute *attr,
3631                               char *buf)
3632 {
3633         struct iwl_priv *priv = d->driver_data;
3634         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3635 }
3636 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3637
3638 static ssize_t show_tx_power(struct device *d,
3639                              struct device_attribute *attr, char *buf)
3640 {
3641         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3642         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3643 }
3644
3645 static ssize_t store_tx_power(struct device *d,
3646                               struct device_attribute *attr,
3647                               const char *buf, size_t count)
3648 {
3649         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3650         char *p = (char *)buf;
3651         u32 val;
3652
3653         val = simple_strtoul(p, &p, 10);
3654         if (p == buf)
3655                 printk(KERN_INFO DRV_NAME
3656                        ": %s is not in decimal form.\n", buf);
3657         else
3658                 iwl_set_tx_power(priv, val, false);
3659
3660         return count;
3661 }
3662
3663 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3664
3665 static ssize_t show_flags(struct device *d,
3666                           struct device_attribute *attr, char *buf)
3667 {
3668         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3669
3670         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3671 }
3672
3673 static ssize_t store_flags(struct device *d,
3674                            struct device_attribute *attr,
3675                            const char *buf, size_t count)
3676 {
3677         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3678         u32 flags = simple_strtoul(buf, NULL, 0);
3679
3680         mutex_lock(&priv->mutex);
3681         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3682                 /* Cancel any currently running scans... */
3683                 if (iwl_scan_cancel_timeout(priv, 100))
3684                         IWL_WARNING("Could not cancel scan.\n");
3685                 else {
3686                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3687                                        flags);
3688                         priv->staging_rxon.flags = cpu_to_le32(flags);
3689                         iwl4965_commit_rxon(priv);
3690                 }
3691         }
3692         mutex_unlock(&priv->mutex);
3693
3694         return count;
3695 }
3696
3697 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3698
3699 static ssize_t show_filter_flags(struct device *d,
3700                                  struct device_attribute *attr, char *buf)
3701 {
3702         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3703
3704         return sprintf(buf, "0x%04X\n",
3705                 le32_to_cpu(priv->active_rxon.filter_flags));
3706 }
3707
3708 static ssize_t store_filter_flags(struct device *d,
3709                                   struct device_attribute *attr,
3710                                   const char *buf, size_t count)
3711 {
3712         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3713         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3714
3715         mutex_lock(&priv->mutex);
3716         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3717                 /* Cancel any currently running scans... */
3718                 if (iwl_scan_cancel_timeout(priv, 100))
3719                         IWL_WARNING("Could not cancel scan.\n");
3720                 else {
3721                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3722                                        "0x%04X\n", filter_flags);
3723                         priv->staging_rxon.filter_flags =
3724                                 cpu_to_le32(filter_flags);
3725                         iwl4965_commit_rxon(priv);
3726                 }
3727         }
3728         mutex_unlock(&priv->mutex);
3729
3730         return count;
3731 }
3732
3733 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3734                    store_filter_flags);
3735
3736 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3737
3738 static ssize_t show_measurement(struct device *d,
3739                                 struct device_attribute *attr, char *buf)
3740 {
3741         struct iwl_priv *priv = dev_get_drvdata(d);
3742         struct iwl4965_spectrum_notification measure_report;
3743         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3744         u8 *data = (u8 *) & measure_report;
3745         unsigned long flags;
3746
3747         spin_lock_irqsave(&priv->lock, flags);
3748         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3749                 spin_unlock_irqrestore(&priv->lock, flags);
3750                 return 0;
3751         }
3752         memcpy(&measure_report, &priv->measure_report, size);
3753         priv->measurement_status = 0;
3754         spin_unlock_irqrestore(&priv->lock, flags);
3755
3756         while (size && (PAGE_SIZE - len)) {
3757                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3758                                    PAGE_SIZE - len, 1);
3759                 len = strlen(buf);
3760                 if (PAGE_SIZE - len)
3761                         buf[len++] = '\n';
3762
3763                 ofs += 16;
3764                 size -= min(size, 16U);
3765         }
3766
3767         return len;
3768 }
3769
3770 static ssize_t store_measurement(struct device *d,
3771                                  struct device_attribute *attr,
3772                                  const char *buf, size_t count)
3773 {
3774         struct iwl_priv *priv = dev_get_drvdata(d);
3775         struct ieee80211_measurement_params params = {
3776                 .channel = le16_to_cpu(priv->active_rxon.channel),
3777                 .start_time = cpu_to_le64(priv->last_tsf),
3778                 .duration = cpu_to_le16(1),
3779         };
3780         u8 type = IWL_MEASURE_BASIC;
3781         u8 buffer[32];
3782         u8 channel;
3783
3784         if (count) {
3785                 char *p = buffer;
3786                 strncpy(buffer, buf, min(sizeof(buffer), count));
3787                 channel = simple_strtoul(p, NULL, 0);
3788                 if (channel)
3789                         params.channel = channel;
3790
3791                 p = buffer;
3792                 while (*p && *p != ' ')
3793                         p++;
3794                 if (*p)
3795                         type = simple_strtoul(p + 1, NULL, 0);
3796         }
3797
3798         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3799                        "channel %d (for '%s')\n", type, params.channel, buf);
3800         iwl4965_get_measurement(priv, &params, type);
3801
3802         return count;
3803 }
3804
3805 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3806                    show_measurement, store_measurement);
3807 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3808
3809 static ssize_t store_retry_rate(struct device *d,
3810                                 struct device_attribute *attr,
3811                                 const char *buf, size_t count)
3812 {
3813         struct iwl_priv *priv = dev_get_drvdata(d);
3814
3815         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3816         if (priv->retry_rate <= 0)
3817                 priv->retry_rate = 1;
3818
3819         return count;
3820 }
3821
3822 static ssize_t show_retry_rate(struct device *d,
3823                                struct device_attribute *attr, char *buf)
3824 {
3825         struct iwl_priv *priv = dev_get_drvdata(d);
3826         return sprintf(buf, "%d", priv->retry_rate);
3827 }
3828
3829 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3830                    store_retry_rate);
3831
3832 static ssize_t store_power_level(struct device *d,
3833                                  struct device_attribute *attr,
3834                                  const char *buf, size_t count)
3835 {
3836         struct iwl_priv *priv = dev_get_drvdata(d);
3837         int rc;
3838         int mode;
3839
3840         mode = simple_strtoul(buf, NULL, 0);
3841         mutex_lock(&priv->mutex);
3842
3843         if (!iwl_is_ready(priv)) {
3844                 rc = -EAGAIN;
3845                 goto out;
3846         }
3847
3848         rc = iwl_power_set_user_mode(priv, mode);
3849         if (rc) {
3850                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3851                 goto out;
3852         }
3853         rc = count;
3854
3855  out:
3856         mutex_unlock(&priv->mutex);
3857         return rc;
3858 }
3859
3860 #define MAX_WX_STRING 80
3861
3862 /* Values are in microsecond */
3863 static const s32 timeout_duration[] = {
3864         350000,
3865         250000,
3866         75000,
3867         37000,
3868         25000,
3869 };
3870 static const s32 period_duration[] = {
3871         400000,
3872         700000,
3873         1000000,
3874         1000000,
3875         1000000
3876 };
3877
3878 static ssize_t show_power_level(struct device *d,
3879                                 struct device_attribute *attr, char *buf)
3880 {
3881         struct iwl_priv *priv = dev_get_drvdata(d);
3882         int level = priv->power_data.power_mode;
3883         char *p = buf;
3884
3885         p += sprintf(p, "%d ", level);
3886         switch (level) {
3887         case IWL_POWER_MODE_CAM:
3888         case IWL_POWER_AC:
3889                 p += sprintf(p, "(AC)");
3890                 break;
3891         case IWL_POWER_BATTERY:
3892                 p += sprintf(p, "(BATTERY)");
3893                 break;
3894         default:
3895                 p += sprintf(p,
3896                              "(Timeout %dms, Period %dms)",
3897                              timeout_duration[level - 1] / 1000,
3898                              period_duration[level - 1] / 1000);
3899         }
3900 /*
3901         if (!(priv->power_mode & IWL_POWER_ENABLED))
3902                 p += sprintf(p, " OFF\n");
3903         else
3904                 p += sprintf(p, " \n");
3905 */
3906         p += sprintf(p, " \n");
3907         return (p - buf + 1);
3908 }
3909
3910 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3911                    store_power_level);
3912
3913 static ssize_t show_channels(struct device *d,
3914                              struct device_attribute *attr, char *buf)
3915 {
3916
3917         struct iwl_priv *priv = dev_get_drvdata(d);
3918         struct ieee80211_channel *channels = NULL;
3919         const struct ieee80211_supported_band *supp_band = NULL;
3920         int len = 0, i;
3921         int count = 0;
3922
3923         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3924                 return -EAGAIN;
3925
3926         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3927         channels = supp_band->channels;
3928         count = supp_band->n_channels;
3929
3930         len += sprintf(&buf[len],
3931                         "Displaying %d channels in 2.4GHz band "
3932                         "(802.11bg):\n", count);
3933
3934         for (i = 0; i < count; i++)
3935                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3936                                 ieee80211_frequency_to_channel(
3937                                 channels[i].center_freq),
3938                                 channels[i].max_power,
3939                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3940                                 " (IEEE 802.11h required)" : "",
3941                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3942                                 || (channels[i].flags &
3943                                 IEEE80211_CHAN_RADAR)) ? "" :
3944                                 ", IBSS",
3945                                 channels[i].flags &
3946                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3947                                 "passive only" : "active/passive");
3948
3949         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3950         channels = supp_band->channels;
3951         count = supp_band->n_channels;
3952
3953         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3954                         "(802.11a):\n", count);
3955
3956         for (i = 0; i < count; i++)
3957                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3958                                 ieee80211_frequency_to_channel(
3959                                 channels[i].center_freq),
3960                                 channels[i].max_power,
3961                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3962                                 " (IEEE 802.11h required)" : "",
3963                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3964                                 || (channels[i].flags &
3965                                 IEEE80211_CHAN_RADAR)) ? "" :
3966                                 ", IBSS",
3967                                 channels[i].flags &
3968                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3969                                 "passive only" : "active/passive");
3970
3971         return len;
3972 }
3973
3974 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3975
3976 static ssize_t show_statistics(struct device *d,
3977                                struct device_attribute *attr, char *buf)
3978 {
3979         struct iwl_priv *priv = dev_get_drvdata(d);
3980         u32 size = sizeof(struct iwl_notif_statistics);
3981         u32 len = 0, ofs = 0;
3982         u8 *data = (u8 *) & priv->statistics;
3983         int rc = 0;
3984
3985         if (!iwl_is_alive(priv))
3986                 return -EAGAIN;
3987
3988         mutex_lock(&priv->mutex);
3989         rc = iwl_send_statistics_request(priv, 0);
3990         mutex_unlock(&priv->mutex);
3991
3992         if (rc) {
3993                 len = sprintf(buf,
3994                               "Error sending statistics request: 0x%08X\n", rc);
3995                 return len;
3996         }
3997
3998         while (size && (PAGE_SIZE - len)) {
3999                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4000                                    PAGE_SIZE - len, 1);
4001                 len = strlen(buf);
4002                 if (PAGE_SIZE - len)
4003                         buf[len++] = '\n';
4004
4005                 ofs += 16;
4006                 size -= min(size, 16U);
4007         }
4008
4009         return len;
4010 }
4011
4012 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4013
4014 static ssize_t show_status(struct device *d,
4015                            struct device_attribute *attr, char *buf)
4016 {
4017         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4018         if (!iwl_is_alive(priv))
4019                 return -EAGAIN;
4020         return sprintf(buf, "0x%08x\n", (int)priv->status);
4021 }
4022
4023 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4024
4025 /*****************************************************************************
4026  *
4027  * driver setup and teardown
4028  *
4029  *****************************************************************************/
4030
4031 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4032 {
4033         priv->workqueue = create_workqueue(DRV_NAME);
4034
4035         init_waitqueue_head(&priv->wait_command_queue);
4036
4037         INIT_WORK(&priv->up, iwl4965_bg_up);
4038         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4039         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4040         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4041         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4042         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4043         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4044         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4045         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4046         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4047
4048         /* FIXME : remove when resolved PENDING */
4049         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4050         iwl_setup_scan_deferred_work(priv);
4051
4052         if (priv->cfg->ops->lib->setup_deferred_work)
4053                 priv->cfg->ops->lib->setup_deferred_work(priv);
4054
4055         init_timer(&priv->statistics_periodic);
4056         priv->statistics_periodic.data = (unsigned long)priv;
4057         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4058
4059         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4060                      iwl4965_irq_tasklet, (unsigned long)priv);
4061 }
4062
4063 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4064 {
4065         if (priv->cfg->ops->lib->cancel_deferred_work)
4066                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4067
4068         cancel_delayed_work_sync(&priv->init_alive_start);
4069         cancel_delayed_work(&priv->scan_check);
4070         cancel_delayed_work(&priv->alive_start);
4071         cancel_delayed_work(&priv->post_associate);
4072         cancel_work_sync(&priv->beacon_update);
4073         del_timer_sync(&priv->statistics_periodic);
4074 }
4075
4076 static struct attribute *iwl4965_sysfs_entries[] = {
4077         &dev_attr_channels.attr,
4078         &dev_attr_flags.attr,
4079         &dev_attr_filter_flags.attr,
4080 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4081         &dev_attr_measurement.attr,
4082 #endif
4083         &dev_attr_power_level.attr,
4084         &dev_attr_retry_rate.attr,
4085         &dev_attr_rs_window.attr,
4086         &dev_attr_statistics.attr,
4087         &dev_attr_status.attr,
4088         &dev_attr_temperature.attr,
4089         &dev_attr_tx_power.attr,
4090 #ifdef CONFIG_IWLWIFI_DEBUG
4091         &dev_attr_debug_level.attr,
4092 #endif
4093         &dev_attr_version.attr,
4094
4095         NULL
4096 };
4097
4098 static struct attribute_group iwl4965_attribute_group = {
4099         .name = NULL,           /* put in device directory */
4100         .attrs = iwl4965_sysfs_entries,
4101 };
4102
4103 static struct ieee80211_ops iwl4965_hw_ops = {
4104         .tx = iwl4965_mac_tx,
4105         .start = iwl4965_mac_start,
4106         .stop = iwl4965_mac_stop,
4107         .add_interface = iwl4965_mac_add_interface,
4108         .remove_interface = iwl4965_mac_remove_interface,
4109         .config = iwl4965_mac_config,
4110         .config_interface = iwl4965_mac_config_interface,
4111         .configure_filter = iwl4965_configure_filter,
4112         .set_key = iwl4965_mac_set_key,
4113         .update_tkip_key = iwl4965_mac_update_tkip_key,
4114         .get_stats = iwl4965_mac_get_stats,
4115         .get_tx_stats = iwl4965_mac_get_tx_stats,
4116         .conf_tx = iwl4965_mac_conf_tx,
4117         .get_tsf = iwl4965_mac_get_tsf,
4118         .reset_tsf = iwl4965_mac_reset_tsf,
4119         .beacon_update = iwl4965_mac_beacon_update,
4120         .bss_info_changed = iwl4965_bss_info_changed,
4121         .ampdu_action = iwl4965_mac_ampdu_action,
4122         .hw_scan = iwl4965_mac_hw_scan
4123 };
4124
4125 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4126 {
4127         int err = 0;
4128         struct iwl_priv *priv;
4129         struct ieee80211_hw *hw;
4130         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4131         unsigned long flags;
4132         DECLARE_MAC_BUF(mac);
4133
4134         /************************
4135          * 1. Allocating HW data
4136          ************************/
4137
4138         /* Disabling hardware scan means that mac80211 will perform scans
4139          * "the hard way", rather than using device's scan. */
4140         if (cfg->mod_params->disable_hw_scan) {
4141                 if (cfg->mod_params->debug & IWL_DL_INFO)
4142                         dev_printk(KERN_DEBUG, &(pdev->dev),
4143                                    "Disabling hw_scan\n");
4144                 iwl4965_hw_ops.hw_scan = NULL;
4145         }
4146
4147         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4148         if (!hw) {
4149                 err = -ENOMEM;
4150                 goto out;
4151         }
4152         priv = hw->priv;
4153         /* At this point both hw and priv are allocated. */
4154
4155         SET_IEEE80211_DEV(hw, &pdev->dev);
4156
4157         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4158         priv->cfg = cfg;
4159         priv->pci_dev = pdev;
4160
4161 #ifdef CONFIG_IWLWIFI_DEBUG
4162         priv->debug_level = priv->cfg->mod_params->debug;
4163         atomic_set(&priv->restrict_refcnt, 0);
4164 #endif
4165
4166         /**************************
4167          * 2. Initializing PCI bus
4168          **************************/
4169         if (pci_enable_device(pdev)) {
4170                 err = -ENODEV;
4171                 goto out_ieee80211_free_hw;
4172         }
4173
4174         pci_set_master(pdev);
4175
4176         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4177         if (!err)
4178                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4179         if (err) {
4180                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4181                 if (!err)
4182                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4183                 /* both attempts failed: */
4184                 if (err) {
4185                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4186                                 DRV_NAME);
4187                         goto out_pci_disable_device;
4188                 }
4189         }
4190
4191         err = pci_request_regions(pdev, DRV_NAME);
4192         if (err)
4193                 goto out_pci_disable_device;
4194
4195         pci_set_drvdata(pdev, priv);
4196
4197         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4198          * PCI Tx retries from interfering with C3 CPU state */
4199         pci_write_config_byte(pdev, 0x41, 0x00);
4200
4201         /***********************
4202          * 3. Read REV register
4203          ***********************/
4204         priv->hw_base = pci_iomap(pdev, 0, 0);
4205         if (!priv->hw_base) {
4206                 err = -ENODEV;
4207                 goto out_pci_release_regions;
4208         }
4209
4210         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4211                 (unsigned long long) pci_resource_len(pdev, 0));
4212         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4213
4214         iwl_hw_detect(priv);
4215         printk(KERN_INFO DRV_NAME
4216                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4217                 priv->cfg->name, priv->hw_rev);
4218
4219         /* amp init */
4220         err = priv->cfg->ops->lib->apm_ops.init(priv);
4221         if (err < 0) {
4222                 IWL_DEBUG_INFO("Failed to init APMG\n");
4223                 goto out_iounmap;
4224         }
4225         /*****************
4226          * 4. Read EEPROM
4227          *****************/
4228         /* Read the EEPROM */
4229         err = iwl_eeprom_init(priv);
4230         if (err) {
4231                 IWL_ERROR("Unable to init EEPROM\n");
4232                 goto out_iounmap;
4233         }
4234         err = iwl_eeprom_check_version(priv);
4235         if (err)
4236                 goto out_iounmap;
4237
4238         /* extract MAC Address */
4239         iwl_eeprom_get_mac(priv, priv->mac_addr);
4240         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4241         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4242
4243         /************************
4244          * 5. Setup HW constants
4245          ************************/
4246         /* Device-specific setup */
4247         if (priv->cfg->ops->lib->set_hw_params(priv)) {
4248                 IWL_ERROR("failed to set hw parameters\n");
4249                 goto out_free_eeprom;
4250         }
4251
4252         /*******************
4253          * 6. Setup priv
4254          *******************/
4255
4256         err = iwl_init_drv(priv);
4257         if (err)
4258                 goto out_free_eeprom;
4259         /* At this point both hw and priv are initialized. */
4260
4261         /**********************************
4262          * 7. Initialize module parameters
4263          **********************************/
4264
4265         /* Disable radio (SW RF KILL) via parameter when loading driver */
4266         if (priv->cfg->mod_params->disable) {
4267                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4268                 IWL_DEBUG_INFO("Radio disabled.\n");
4269         }
4270
4271         /********************
4272          * 8. Setup services
4273          ********************/
4274         spin_lock_irqsave(&priv->lock, flags);
4275         iwl4965_disable_interrupts(priv);
4276         spin_unlock_irqrestore(&priv->lock, flags);
4277
4278         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4279         if (err) {
4280                 IWL_ERROR("failed to create sysfs device attributes\n");
4281                 goto out_uninit_drv;
4282         }
4283
4284
4285         iwl_setup_deferred_work(priv);
4286         iwl_setup_rx_handlers(priv);
4287
4288         /********************
4289          * 9. Conclude
4290          ********************/
4291         pci_save_state(pdev);
4292         pci_disable_device(pdev);
4293
4294         /**********************************
4295          * 10. Setup and register mac80211
4296          **********************************/
4297
4298         err = iwl_setup_mac(priv);
4299         if (err)
4300                 goto out_remove_sysfs;
4301
4302         err = iwl_dbgfs_register(priv, DRV_NAME);
4303         if (err)
4304                 IWL_ERROR("failed to create debugfs files\n");
4305
4306         err = iwl_rfkill_init(priv);
4307         if (err)
4308                 IWL_ERROR("Unable to initialize RFKILL system. "
4309                                   "Ignoring error: %d\n", err);
4310         iwl_power_initialize(priv);
4311         return 0;
4312
4313  out_remove_sysfs:
4314         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4315  out_uninit_drv:
4316         iwl_uninit_drv(priv);
4317  out_free_eeprom:
4318         iwl_eeprom_free(priv);
4319  out_iounmap:
4320         pci_iounmap(pdev, priv->hw_base);
4321  out_pci_release_regions:
4322         pci_release_regions(pdev);
4323         pci_set_drvdata(pdev, NULL);
4324  out_pci_disable_device:
4325         pci_disable_device(pdev);
4326  out_ieee80211_free_hw:
4327         ieee80211_free_hw(priv->hw);
4328  out:
4329         return err;
4330 }
4331
4332 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4333 {
4334         struct iwl_priv *priv = pci_get_drvdata(pdev);
4335         unsigned long flags;
4336
4337         if (!priv)
4338                 return;
4339
4340         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4341
4342         iwl_dbgfs_unregister(priv);
4343         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4344
4345         if (priv->mac80211_registered) {
4346                 ieee80211_unregister_hw(priv->hw);
4347                 priv->mac80211_registered = 0;
4348         }
4349
4350         set_bit(STATUS_EXIT_PENDING, &priv->status);
4351
4352         iwl4965_down(priv);
4353
4354         /* make sure we flush any pending irq or
4355          * tasklet for the driver
4356          */
4357         spin_lock_irqsave(&priv->lock, flags);
4358         iwl4965_disable_interrupts(priv);
4359         spin_unlock_irqrestore(&priv->lock, flags);
4360
4361         iwl_synchronize_irq(priv);
4362
4363         iwl_rfkill_unregister(priv);
4364         iwl4965_dealloc_ucode_pci(priv);
4365
4366         if (priv->rxq.bd)
4367                 iwl_rx_queue_free(priv, &priv->rxq);
4368         iwl_hw_txq_ctx_free(priv);
4369
4370         iwl_clear_stations_table(priv);
4371         iwl_eeprom_free(priv);
4372
4373
4374         /*netif_stop_queue(dev); */
4375         flush_workqueue(priv->workqueue);
4376
4377         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4378          * priv->workqueue... so we can't take down the workqueue
4379          * until now... */
4380         destroy_workqueue(priv->workqueue);
4381         priv->workqueue = NULL;
4382
4383         pci_iounmap(pdev, priv->hw_base);
4384         pci_release_regions(pdev);
4385         pci_disable_device(pdev);
4386         pci_set_drvdata(pdev, NULL);
4387
4388         iwl_uninit_drv(priv);
4389
4390         if (priv->ibss_beacon)
4391                 dev_kfree_skb(priv->ibss_beacon);
4392
4393         ieee80211_free_hw(priv->hw);
4394 }
4395
4396 #ifdef CONFIG_PM
4397
4398 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4399 {
4400         struct iwl_priv *priv = pci_get_drvdata(pdev);
4401
4402         if (priv->is_open) {
4403                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4404                 iwl4965_mac_stop(priv->hw);
4405                 priv->is_open = 1;
4406         }
4407
4408         pci_set_power_state(pdev, PCI_D3hot);
4409
4410         return 0;
4411 }
4412
4413 static int iwl4965_pci_resume(struct pci_dev *pdev)
4414 {
4415         struct iwl_priv *priv = pci_get_drvdata(pdev);
4416
4417         pci_set_power_state(pdev, PCI_D0);
4418
4419         if (priv->is_open)
4420                 iwl4965_mac_start(priv->hw);
4421
4422         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4423         return 0;
4424 }
4425
4426 #endif /* CONFIG_PM */
4427
4428 /*****************************************************************************
4429  *
4430  * driver and module entry point
4431  *
4432  *****************************************************************************/
4433
4434 /* Hardware specific file defines the PCI IDs table for that hardware module */
4435 static struct pci_device_id iwl_hw_card_ids[] = {
4436         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4437         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4438 #ifdef CONFIG_IWL5000
4439         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4440         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4441         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4442 #endif /* CONFIG_IWL5000 */
4443         {0}
4444 };
4445 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4446
4447 static struct pci_driver iwl_driver = {
4448         .name = DRV_NAME,
4449         .id_table = iwl_hw_card_ids,
4450         .probe = iwl4965_pci_probe,
4451         .remove = __devexit_p(iwl4965_pci_remove),
4452 #ifdef CONFIG_PM
4453         .suspend = iwl4965_pci_suspend,
4454         .resume = iwl4965_pci_resume,
4455 #endif
4456 };
4457
4458 static int __init iwl4965_init(void)
4459 {
4460
4461         int ret;
4462         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4463         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4464
4465         ret = iwl4965_rate_control_register();
4466         if (ret) {
4467                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4468                 return ret;
4469         }
4470
4471         ret = pci_register_driver(&iwl_driver);
4472         if (ret) {
4473                 IWL_ERROR("Unable to initialize PCI module\n");
4474                 goto error_register;
4475         }
4476
4477         return ret;
4478
4479 error_register:
4480         iwl4965_rate_control_unregister();
4481         return ret;
4482 }
4483
4484 static void __exit iwl4965_exit(void)
4485 {
4486         pci_unregister_driver(&iwl_driver);
4487         iwl4965_rate_control_unregister();
4488 }
4489
4490 module_exit(iwl4965_exit);
4491 module_init(iwl4965_init);