SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl3945-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 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  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/ieee80211_radiotap.h>
  44 #include <net/lib80211.h>
  45 #include <net/mac80211.h>
  46
  47 #include <asm/div64.h>
  48
  49 #define DRV_NAME        "iwl3945"
  50
  51 #include "iwl-fh.h"
  52 #include "iwl-3945-fh.h"
  53 #include "iwl-commands.h"
  54 #include "iwl-sta.h"
  55 #include "iwl-3945.h"
  56 #include "iwl-helpers.h"
  57 #include "iwl-core.h"
  58 #include "iwl-dev.h"
  59
  60 /*
  61  * module name, copyright, version, etc.
  62  */
  63
  64 #define DRV_DESCRIPTION \
  65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  66
  67 #ifdef CONFIG_IWLWIFI_DEBUG
  68 #define VD "d"
  69 #else
  70 #define VD
  71 #endif
  72
  73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  74 #define VS "s"
  75 #else
  76 #define VS
  77 #endif
  78
  79 #define IWL39_VERSION "1.2.26k" VD VS
  80 #define DRV_COPYRIGHT   "Copyright(c) 2003-2009 Intel Corporation"
  81 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  82 #define DRV_VERSION     IWL39_VERSION
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  88 MODULE_LICENSE("GPL");
  89
  90  /* module parameters */
  91 struct iwl_mod_params iwl3945_mod_params = {
  92         .num_of_queues = IWL39_MAX_NUM_QUEUES,
  93         .sw_crypto = 1,
  94         .restart_fw = 1,
  95         /* the rest are 0 by default */
  96 };
  97
  98 /*************** STATION TABLE MANAGEMENT ****
  99  * mac80211 should be examined to determine if sta_info is duplicating
 100  * the functionality provided here
 101  */
 102
 103 /**************************************************************/
 104 #if 0 /* temporary disable till we add real remove station */
 105 /**
 106  * iwl3945_remove_station - Remove driver's knowledge of station.
 107  *
 108  * NOTE:  This does not remove station from device's station table.
 109  */
 110 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 111 {
 112         int index = IWL_INVALID_STATION;
 113         int i;
 114         unsigned long flags;
 115
 116         spin_lock_irqsave(&priv->sta_lock, flags);
 117
 118         if (is_ap)
 119                 index = IWL_AP_ID;
 120         else if (is_broadcast_ether_addr(addr))
 121                 index = priv->hw_params.bcast_sta_id;
 122         else
 123                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 124                         if (priv->stations_39[i].used &&
 125                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 126                                                 addr)) {
 127                                 index = i;
 128                                 break;
 129                         }
 130
 131         if (unlikely(index == IWL_INVALID_STATION))
 132                 goto out;
 133
 134         if (priv->stations_39[index].used) {
 135                 priv->stations_39[index].used = 0;
 136                 priv->num_stations--;
 137         }
 138
 139         BUG_ON(priv->num_stations < 0);
 140
 141 out:
 142         spin_unlock_irqrestore(&priv->sta_lock, flags);
 143         return 0;
 144 }
 145 #endif
 146
 147 /**
 148  * iwl3945_clear_stations_table - Clear the driver's station table
 149  *
 150  * NOTE:  This does not clear or otherwise alter the device's station table.
 151  */
 152 void iwl3945_clear_stations_table(struct iwl_priv *priv)
 153 {
 154         unsigned long flags;
 155
 156         spin_lock_irqsave(&priv->sta_lock, flags);
 157
 158         priv->num_stations = 0;
 159         memset(priv->stations_39, 0, sizeof(priv->stations_39));
 160
 161         spin_unlock_irqrestore(&priv->sta_lock, flags);
 162 }
 163
 164 /**
 165  * iwl3945_add_station - Add station to station tables in driver and device
 166  */
 167 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags, struct ieee80211_sta_ht_cap *ht_info)
 168 {
 169         int i;
 170         int index = IWL_INVALID_STATION;
 171         struct iwl3945_station_entry *station;
 172         unsigned long flags_spin;
 173         u8 rate;
 174
 175         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 176         if (is_ap)
 177                 index = IWL_AP_ID;
 178         else if (is_broadcast_ether_addr(addr))
 179                 index = priv->hw_params.bcast_sta_id;
 180         else
 181                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
 182                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 183                                                 addr)) {
 184                                 index = i;
 185                                 break;
 186                         }
 187
 188                         if (!priv->stations_39[i].used &&
 189                             index == IWL_INVALID_STATION)
 190                                 index = i;
 191                 }
 192
 193         /* These two conditions has the same outcome but keep them separate
 194           since they have different meaning */
 195         if (unlikely(index == IWL_INVALID_STATION)) {
 196                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 197                 return index;
 198         }
 199
 200         if (priv->stations_39[index].used &&
 201            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
 202                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 203                 return index;
 204         }
 205
 206         IWL_DEBUG_ASSOC(priv, "Add STA ID %d: %pM\n", index, addr);
 207         station = &priv->stations_39[index];
 208         station->used = 1;
 209         priv->num_stations++;
 210
 211         /* Set up the REPLY_ADD_STA command to send to device */
 212         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 213         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 214         station->sta.mode = 0;
 215         station->sta.sta.sta_id = index;
 216         station->sta.station_flags = 0;
 217
 218         if (priv->band == IEEE80211_BAND_5GHZ)
 219                 rate = IWL_RATE_6M_PLCP;
 220         else
 221                 rate =  IWL_RATE_1M_PLCP;
 222
 223         /* Turn on both antennas for the station... */
 224         station->sta.rate_n_flags =
 225                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 226
 227         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 228
 229         /* Add station to device's station table */
 230         iwl_send_add_sta(priv,
 231                          (struct iwl_addsta_cmd *)&station->sta, flags);
 232         return index;
 233
 234 }
 235
 236 /**
 237  * iwl3945_get_antenna_flags - Get antenna flags for RXON command
 238  * @priv: eeprom and antenna fields are used to determine antenna flags
 239  *
 240  * priv->eeprom39  is used to determine if antenna AUX/MAIN are reversed
 241  * iwl3945_mod_params.antenna specifies the antenna diversity mode:
 242  *
 243  * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
 244  * IWL_ANTENNA_MAIN      - Force MAIN antenna
 245  * IWL_ANTENNA_AUX       - Force AUX antenna
 246  */
 247 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
 248 {
 249         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
 250
 251         switch (iwl3945_mod_params.antenna) {
 252         case IWL_ANTENNA_DIVERSITY:
 253                 return 0;
 254
 255         case IWL_ANTENNA_MAIN:
 256                 if (eeprom->antenna_switch_type)
 257                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 258                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 259
 260         case IWL_ANTENNA_AUX:
 261                 if (eeprom->antenna_switch_type)
 262                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 263                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 264         }
 265
 266         /* bad antenna selector value */
 267         IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
 268                 iwl3945_mod_params.antenna);
 269
 270         return 0;               /* "diversity" is default if error */
 271 }
 272
 273 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
 274                                    struct ieee80211_key_conf *keyconf,
 275                                    u8 sta_id)
 276 {
 277         unsigned long flags;
 278         __le16 key_flags = 0;
 279         int ret;
 280
 281         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
 282         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
 283
 284         if (sta_id == priv->hw_params.bcast_sta_id)
 285                 key_flags |= STA_KEY_MULTICAST_MSK;
 286
 287         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 288         keyconf->hw_key_idx = keyconf->keyidx;
 289         key_flags &= ~STA_KEY_FLG_INVALID;
 290
 291         spin_lock_irqsave(&priv->sta_lock, flags);
 292         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
 293         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
 294         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
 295                keyconf->keylen);
 296
 297         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
 298                keyconf->keylen);
 299
 300         if ((priv->stations_39[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
 301                         == STA_KEY_FLG_NO_ENC)
 302                 priv->stations_39[sta_id].sta.key.key_offset =
 303                                  iwl_get_free_ucode_key_index(priv);
 304         /* else, we are overriding an existing key => no need to allocated room
 305         * in uCode. */
 306
 307         WARN(priv->stations_39[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
 308                 "no space for a new key");
 309
 310         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
 311         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 312         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 313
 314         IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
 315
 316         ret = iwl_send_add_sta(priv,
 317                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, CMD_ASYNC);
 318
 319         spin_unlock_irqrestore(&priv->sta_lock, flags);
 320
 321         return ret;
 322 }
 323
 324 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
 325                                   struct ieee80211_key_conf *keyconf,
 326                                   u8 sta_id)
 327 {
 328         return -EOPNOTSUPP;
 329 }
 330
 331 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
 332                                   struct ieee80211_key_conf *keyconf,
 333                                   u8 sta_id)
 334 {
 335         return -EOPNOTSUPP;
 336 }
 337
 338 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
 339 {
 340         unsigned long flags;
 341
 342         spin_lock_irqsave(&priv->sta_lock, flags);
 343         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
 344         memset(&priv->stations_39[sta_id].sta.key, 0,
 345                 sizeof(struct iwl4965_keyinfo));
 346         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
 347         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 348         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 349         spin_unlock_irqrestore(&priv->sta_lock, flags);
 350
 351         IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
 352         iwl_send_add_sta(priv,
 353                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
 354         return 0;
 355 }
 356
 357 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
 358                         struct ieee80211_key_conf *keyconf, u8 sta_id)
 359 {
 360         int ret = 0;
 361
 362         keyconf->hw_key_idx = HW_KEY_DYNAMIC;
 363
 364         switch (keyconf->alg) {
 365         case ALG_CCMP:
 366                 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
 367                 break;
 368         case ALG_TKIP:
 369                 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
 370                 break;
 371         case ALG_WEP:
 372                 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
 373                 break;
 374         default:
 375                 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
 376                 ret = -EINVAL;
 377         }
 378
 379         IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
 380                       keyconf->alg, keyconf->keylen, keyconf->keyidx,
 381                       sta_id, ret);
 382
 383         return ret;
 384 }
 385
 386 static int iwl3945_remove_static_key(struct iwl_priv *priv)
 387 {
 388         int ret = -EOPNOTSUPP;
 389
 390         return ret;
 391 }
 392
 393 static int iwl3945_set_static_key(struct iwl_priv *priv,
 394                                 struct ieee80211_key_conf *key)
 395 {
 396         if (key->alg == ALG_WEP)
 397                 return -EOPNOTSUPP;
 398
 399         IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
 400         return -EINVAL;
 401 }
 402
 403 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
 404 {
 405         struct list_head *element;
 406
 407         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 408                        priv->frames_count);
 409
 410         while (!list_empty(&priv->free_frames)) {
 411                 element = priv->free_frames.next;
 412                 list_del(element);
 413                 kfree(list_entry(element, struct iwl3945_frame, list));
 414                 priv->frames_count--;
 415         }
 416
 417         if (priv->frames_count) {
 418                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 419                             priv->frames_count);
 420                 priv->frames_count = 0;
 421         }
 422 }
 423
 424 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
 425 {
 426         struct iwl3945_frame *frame;
 427         struct list_head *element;
 428         if (list_empty(&priv->free_frames)) {
 429                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 430                 if (!frame) {
 431                         IWL_ERR(priv, "Could not allocate frame!\n");
 432                         return NULL;
 433                 }
 434
 435                 priv->frames_count++;
 436                 return frame;
 437         }
 438
 439         element = priv->free_frames.next;
 440         list_del(element);
 441         return list_entry(element, struct iwl3945_frame, list);
 442 }
 443
 444 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
 445 {
 446         memset(frame, 0, sizeof(*frame));
 447         list_add(&frame->list, &priv->free_frames);
 448 }
 449
 450 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
 451                                 struct ieee80211_hdr *hdr,
 452                                 int left)
 453 {
 454
 455         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 456             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 457              (priv->iw_mode != NL80211_IFTYPE_AP)))
 458                 return 0;
 459
 460         if (priv->ibss_beacon->len > left)
 461                 return 0;
 462
 463         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 464
 465         return priv->ibss_beacon->len;
 466 }
 467
 468 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
 469 {
 470         struct iwl3945_frame *frame;
 471         unsigned int frame_size;
 472         int rc;
 473         u8 rate;
 474
 475         frame = iwl3945_get_free_frame(priv);
 476
 477         if (!frame) {
 478                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 479                           "command.\n");
 480                 return -ENOMEM;
 481         }
 482
 483         rate = iwl_rate_get_lowest_plcp(priv);
 484
 485         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
 486
 487         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 488                               &frame->u.cmd[0]);
 489
 490         iwl3945_free_frame(priv, frame);
 491
 492         return rc;
 493 }
 494
 495 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
 496 {
 497         if (priv->shared_virt)
 498                 pci_free_consistent(priv->pci_dev,
 499                                     sizeof(struct iwl3945_shared),
 500                                     priv->shared_virt,
 501                                     priv->shared_phys);
 502 }
 503
 504 #define MAX_UCODE_BEACON_INTERVAL       1024
 505 #define INTEL_CONN_LISTEN_INTERVAL      cpu_to_le16(0xA)
 506
 507 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
 508 {
 509         u16 new_val = 0;
 510         u16 beacon_factor = 0;
 511
 512         beacon_factor =
 513             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 514                 / MAX_UCODE_BEACON_INTERVAL;
 515         new_val = beacon_val / beacon_factor;
 516
 517         return cpu_to_le16(new_val);
 518 }
 519
 520 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
 521 {
 522         u64 interval_tm_unit;
 523         u64 tsf, result;
 524         unsigned long flags;
 525         struct ieee80211_conf *conf = NULL;
 526         u16 beacon_int = 0;
 527
 528         conf = ieee80211_get_hw_conf(priv->hw);
 529
 530         spin_lock_irqsave(&priv->lock, flags);
 531         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 532         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 533
 534         tsf = priv->timestamp;
 535
 536         beacon_int = priv->beacon_int;
 537         spin_unlock_irqrestore(&priv->lock, flags);
 538
 539         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 540                 if (beacon_int == 0) {
 541                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 542                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 543                 } else {
 544                         priv->rxon_timing.beacon_interval =
 545                                 cpu_to_le16(beacon_int);
 546                         priv->rxon_timing.beacon_interval =
 547                             iwl3945_adjust_beacon_interval(
 548                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 549                 }
 550
 551                 priv->rxon_timing.atim_window = 0;
 552         } else {
 553                 priv->rxon_timing.beacon_interval =
 554                         iwl3945_adjust_beacon_interval(
 555                                 priv->vif->bss_conf.beacon_int);
 556                 /* TODO: we need to get atim_window from upper stack
 557                  * for now we set to 0 */
 558                 priv->rxon_timing.atim_window = 0;
 559         }
 560
 561         interval_tm_unit =
 562                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 563         result = do_div(tsf, interval_tm_unit);
 564         priv->rxon_timing.beacon_init_val =
 565             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 566
 567         IWL_DEBUG_ASSOC(priv,
 568                 "beacon interval %d beacon timer %d beacon tim %d\n",
 569                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 570                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 571                 le16_to_cpu(priv->rxon_timing.atim_window));
 572 }
 573
 574 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
 575                                       struct ieee80211_tx_info *info,
 576                                       struct iwl_cmd *cmd,
 577                                       struct sk_buff *skb_frag,
 578                                       int sta_id)
 579 {
 580         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 581         struct iwl_hw_key *keyinfo = &priv->stations_39[sta_id].keyinfo;
 582
 583         switch (keyinfo->alg) {
 584         case ALG_CCMP:
 585                 tx->sec_ctl = TX_CMD_SEC_CCM;
 586                 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
 587                 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
 588                 break;
 589
 590         case ALG_TKIP:
 591                 break;
 592
 593         case ALG_WEP:
 594                 tx->sec_ctl = TX_CMD_SEC_WEP |
 595                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
 596
 597                 if (keyinfo->keylen == 13)
 598                         tx->sec_ctl |= TX_CMD_SEC_KEY128;
 599
 600                 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
 601
 602                 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
 603                              "with key %d\n", info->control.hw_key->hw_key_idx);
 604                 break;
 605
 606         default:
 607                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
 608                 break;
 609         }
 610 }
 611
 612 /*
 613  * handle build REPLY_TX command notification.
 614  */
 615 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
 616                                   struct iwl_cmd *cmd,
 617                                   struct ieee80211_tx_info *info,
 618                                   struct ieee80211_hdr *hdr, u8 std_id)
 619 {
 620         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 621         __le32 tx_flags = tx->tx_flags;
 622         __le16 fc = hdr->frame_control;
 623         u8 rc_flags = info->control.rates[0].flags;
 624
 625         tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 626         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 627                 tx_flags |= TX_CMD_FLG_ACK_MSK;
 628                 if (ieee80211_is_mgmt(fc))
 629                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 630                 if (ieee80211_is_probe_resp(fc) &&
 631                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
 632                         tx_flags |= TX_CMD_FLG_TSF_MSK;
 633         } else {
 634                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
 635                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 636         }
 637
 638         tx->sta_id = std_id;
 639         if (ieee80211_has_morefrags(fc))
 640                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
 641
 642         if (ieee80211_is_data_qos(fc)) {
 643                 u8 *qc = ieee80211_get_qos_ctl(hdr);
 644                 tx->tid_tspec = qc[0] & 0xf;
 645                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
 646         } else {
 647                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 648         }
 649
 650         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 651                 tx_flags |= TX_CMD_FLG_RTS_MSK;
 652                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
 653         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 654                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 655                 tx_flags |= TX_CMD_FLG_CTS_MSK;
 656         }
 657
 658         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
 659                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
 660
 661         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
 662         if (ieee80211_is_mgmt(fc)) {
 663                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
 664                         tx->timeout.pm_frame_timeout = cpu_to_le16(3);
 665                 else
 666                         tx->timeout.pm_frame_timeout = cpu_to_le16(2);
 667         } else {
 668                 tx->timeout.pm_frame_timeout = 0;
 669 #ifdef CONFIG_IWLWIFI_LEDS
 670                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
 671 #endif
 672         }
 673
 674         tx->driver_txop = 0;
 675         tx->tx_flags = tx_flags;
 676         tx->next_frame_len = 0;
 677 }
 678
 679 /*
 680  * start REPLY_TX command process
 681  */
 682 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 683 {
 684         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 685         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 686         struct iwl3945_tx_cmd *tx;
 687         struct iwl_tx_queue *txq = NULL;
 688         struct iwl_queue *q = NULL;
 689         struct iwl_cmd *out_cmd = NULL;
 690         dma_addr_t phys_addr;
 691         dma_addr_t txcmd_phys;
 692         int txq_id = skb_get_queue_mapping(skb);
 693         u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
 694         u8 id;
 695         u8 unicast;
 696         u8 sta_id;
 697         u8 tid = 0;
 698         u16 seq_number = 0;
 699         __le16 fc;
 700         u8 wait_write_ptr = 0;
 701         u8 *qc = NULL;
 702         unsigned long flags;
 703         int rc;
 704
 705         spin_lock_irqsave(&priv->lock, flags);
 706         if (iwl_is_rfkill(priv)) {
 707                 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
 708                 goto drop_unlock;
 709         }
 710
 711         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
 712                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
 713                 goto drop_unlock;
 714         }
 715
 716         unicast = !is_multicast_ether_addr(hdr->addr1);
 717         id = 0;
 718
 719         fc = hdr->frame_control;
 720
 721 #ifdef CONFIG_IWLWIFI_DEBUG
 722         if (ieee80211_is_auth(fc))
 723                 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
 724         else if (ieee80211_is_assoc_req(fc))
 725                 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
 726         else if (ieee80211_is_reassoc_req(fc))
 727                 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
 728 #endif
 729
 730         /* drop all data frame if we are not associated */
 731         if (ieee80211_is_data(fc) &&
 732             (!iwl_is_monitor_mode(priv)) && /* packet injection */
 733             (!iwl_is_associated(priv) ||
 734              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
 735                 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
 736                 goto drop_unlock;
 737         }
 738
 739         spin_unlock_irqrestore(&priv->lock, flags);
 740
 741         hdr_len = ieee80211_hdrlen(fc);
 742
 743         /* Find (or create) index into station table for destination station */
 744         sta_id = iwl_get_sta_id(priv, hdr);
 745         if (sta_id == IWL_INVALID_STATION) {
 746                 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
 747                                hdr->addr1);
 748                 goto drop;
 749         }
 750
 751         IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
 752
 753         if (ieee80211_is_data_qos(fc)) {
 754                 qc = ieee80211_get_qos_ctl(hdr);
 755                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
 756                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
 757                                 IEEE80211_SCTL_SEQ;
 758                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
 759                         (hdr->seq_ctrl &
 760                                 cpu_to_le16(IEEE80211_SCTL_FRAG));
 761                 seq_number += 0x10;
 762         }
 763
 764         /* Descriptor for chosen Tx queue */
 765         txq = &priv->txq[txq_id];
 766         q = &txq->q;
 767
 768         spin_lock_irqsave(&priv->lock, flags);
 769
 770         idx = get_cmd_index(q, q->write_ptr, 0);
 771
 772         /* Set up driver data for this TFD */
 773         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
 774         txq->txb[q->write_ptr].skb[0] = skb;
 775
 776         /* Init first empty entry in queue's array of Tx/cmd buffers */
 777         out_cmd = txq->cmd[idx];
 778         tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
 779         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
 780         memset(tx, 0, sizeof(*tx));
 781
 782         /*
 783          * Set up the Tx-command (not MAC!) header.
 784          * Store the chosen Tx queue and TFD index within the sequence field;
 785          * after Tx, uCode's Tx response will return this value so driver can
 786          * locate the frame within the tx queue and do post-tx processing.
 787          */
 788         out_cmd->hdr.cmd = REPLY_TX;
 789         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
 790                                 INDEX_TO_SEQ(q->write_ptr)));
 791
 792         /* Copy MAC header from skb into command buffer */
 793         memcpy(tx->hdr, hdr, hdr_len);
 794
 795
 796         if (info->control.hw_key)
 797                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
 798
 799         /* TODO need this for burst mode later on */
 800         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
 801
 802         /* set is_hcca to 0; it probably will never be implemented */
 803         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
 804
 805         /* Total # bytes to be transmitted */
 806         len = (u16)skb->len;
 807         tx->len = cpu_to_le16(len);
 808
 809
 810         tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
 811         tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
 812
 813         if (!ieee80211_has_morefrags(hdr->frame_control)) {
 814                 txq->need_update = 1;
 815                 if (qc)
 816                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
 817         } else {
 818                 wait_write_ptr = 1;
 819                 txq->need_update = 0;
 820         }
 821
 822         IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
 823                      le16_to_cpu(out_cmd->hdr.sequence));
 824         IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
 825         iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
 826         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
 827                            ieee80211_hdrlen(fc));
 828
 829         /*
 830          * Use the first empty entry in this queue's command buffer array
 831          * to contain the Tx command and MAC header concatenated together
 832          * (payload data will be in another buffer).
 833          * Size of this varies, due to varying MAC header length.
 834          * If end is not dword aligned, we'll have 2 extra bytes at the end
 835          * of the MAC header (device reads on dword boundaries).
 836          * We'll tell device about this padding later.
 837          */
 838         len = sizeof(struct iwl3945_tx_cmd) +
 839                         sizeof(struct iwl_cmd_header) + hdr_len;
 840
 841         len_org = len;
 842         len = (len + 3) & ~3;
 843
 844         if (len_org != len)
 845                 len_org = 1;
 846         else
 847                 len_org = 0;
 848
 849         /* Physical address of this Tx command's header (not MAC header!),
 850          * within command buffer array. */
 851         txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
 852                                     len, PCI_DMA_TODEVICE);
 853         /* we do not map meta data ... so we can safely access address to
 854          * provide to unmap command*/
 855         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
 856         pci_unmap_len_set(&out_cmd->meta, len, len);
 857
 858         /* Add buffer containing Tx command and MAC(!) header to TFD's
 859          * first entry */
 860         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
 861                                                    txcmd_phys, len, 1, 0);
 862
 863
 864         /* Set up TFD's 2nd entry to point directly to remainder of skb,
 865          * if any (802.11 null frames have no payload). */
 866         len = skb->len - hdr_len;
 867         if (len) {
 868                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
 869                                            len, PCI_DMA_TODEVICE);
 870                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
 871                                                            phys_addr, len,
 872                                                            0, U32_PAD(len));
 873         }
 874
 875
 876         /* Tell device the write index *just past* this latest filled TFD */
 877         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 878         rc = iwl_txq_update_write_ptr(priv, txq);
 879         spin_unlock_irqrestore(&priv->lock, flags);
 880
 881         if (rc)
 882                 return rc;
 883
 884         if ((iwl_queue_space(q) < q->high_mark)
 885             && priv->mac80211_registered) {
 886                 if (wait_write_ptr) {
 887                         spin_lock_irqsave(&priv->lock, flags);
 888                         txq->need_update = 1;
 889                         iwl_txq_update_write_ptr(priv, txq);
 890                         spin_unlock_irqrestore(&priv->lock, flags);
 891                 }
 892
 893                 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
 894         }
 895
 896         return 0;
 897
 898 drop_unlock:
 899         spin_unlock_irqrestore(&priv->lock, flags);
 900 drop:
 901         return -1;
 902 }
 903
 904 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
 905
 906 #include "iwl-spectrum.h"
 907
 908 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 909 #define BEACON_TIME_MASK_HIGH   0xFF000000
 910 #define TIME_UNIT               1024
 911
 912 /*
 913  * extended beacon time format
 914  * time in usec will be changed into a 32-bit value in 8:24 format
 915  * the high 1 byte is the beacon counts
 916  * the lower 3 bytes is the time in usec within one beacon interval
 917  */
 918
 919 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
 920 {
 921         u32 quot;
 922         u32 rem;
 923         u32 interval = beacon_interval * 1024;
 924
 925         if (!interval || !usec)
 926                 return 0;
 927
 928         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 929         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 930
 931         return (quot << 24) + rem;
 932 }
 933
 934 /* base is usually what we get from ucode with each received frame,
 935  * the same as HW timer counter counting down
 936  */
 937
 938 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 939 {
 940         u32 base_low = base & BEACON_TIME_MASK_LOW;
 941         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 942         u32 interval = beacon_interval * TIME_UNIT;
 943         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 944             (addon & BEACON_TIME_MASK_HIGH);
 945
 946         if (base_low > addon_low)
 947                 res += base_low - addon_low;
 948         else if (base_low < addon_low) {
 949                 res += interval + base_low - addon_low;
 950                 res += (1 << 24);
 951         } else
 952                 res += (1 << 24);
 953
 954         return cpu_to_le32(res);
 955 }
 956
 957 static int iwl3945_get_measurement(struct iwl_priv *priv,
 958                                struct ieee80211_measurement_params *params,
 959                                u8 type)
 960 {
 961         struct iwl_spectrum_cmd spectrum;
 962         struct iwl_rx_packet *res;
 963         struct iwl_host_cmd cmd = {
 964                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 965                 .data = (void *)&spectrum,
 966                 .meta.flags = CMD_WANT_SKB,
 967         };
 968         u32 add_time = le64_to_cpu(params->start_time);
 969         int rc;
 970         int spectrum_resp_status;
 971         int duration = le16_to_cpu(params->duration);
 972
 973         if (iwl_is_associated(priv))
 974                 add_time =
 975                     iwl3945_usecs_to_beacons(
 976                         le64_to_cpu(params->start_time) - priv->last_tsf,
 977                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 978
 979         memset(&spectrum, 0, sizeof(spectrum));
 980
 981         spectrum.channel_count = cpu_to_le16(1);
 982         spectrum.flags =
 983             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 984         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 985         cmd.len = sizeof(spectrum);
 986         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 987
 988         if (iwl_is_associated(priv))
 989                 spectrum.start_time =
 990                     iwl3945_add_beacon_time(priv->last_beacon_time,
 991                                 add_time,
 992                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 993         else
 994                 spectrum.start_time = 0;
 995
 996         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 997         spectrum.channels[0].channel = params->channel;
 998         spectrum.channels[0].type = type;
 999         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1000                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1001                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1002
1003         rc = iwl_send_cmd_sync(priv, &cmd);
1004         if (rc)
1005                 return rc;
1006
1007         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1008         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1009                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1010                 rc = -EIO;
1011         }
1012
1013         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1014         switch (spectrum_resp_status) {
1015         case 0:         /* Command will be handled */
1016                 if (res->u.spectrum.id != 0xff) {
1017                         IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1018                                                 res->u.spectrum.id);
1019                         priv->measurement_status &= ~MEASUREMENT_READY;
1020                 }
1021                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1022                 rc = 0;
1023                 break;
1024
1025         case 1:         /* Command will not be handled */
1026                 rc = -EAGAIN;
1027                 break;
1028         }
1029
1030         dev_kfree_skb_any(cmd.meta.u.skb);
1031
1032         return rc;
1033 }
1034 #endif
1035
1036 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1037                                struct iwl_rx_mem_buffer *rxb)
1038 {
1039         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1040         struct iwl_alive_resp *palive;
1041         struct delayed_work *pwork;
1042
1043         palive = &pkt->u.alive_frame;
1044
1045         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1046                        "0x%01X 0x%01X\n",
1047                        palive->is_valid, palive->ver_type,
1048                        palive->ver_subtype);
1049
1050         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1051                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1052                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1053                        sizeof(struct iwl_alive_resp));
1054                 pwork = &priv->init_alive_start;
1055         } else {
1056                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1057                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1058                        sizeof(struct iwl_alive_resp));
1059                 pwork = &priv->alive_start;
1060                 iwl3945_disable_events(priv);
1061         }
1062
1063         /* We delay the ALIVE response by 5ms to
1064          * give the HW RF Kill time to activate... */
1065         if (palive->is_valid == UCODE_VALID_OK)
1066                 queue_delayed_work(priv->workqueue, pwork,
1067                                    msecs_to_jiffies(5));
1068         else
1069                 IWL_WARN(priv, "uCode did not respond OK.\n");
1070 }
1071
1072 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1073                                  struct iwl_rx_mem_buffer *rxb)
1074 {
1075 #ifdef CONFIG_IWLWIFI_DEBUG
1076         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1077 #endif
1078
1079         IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1080         return;
1081 }
1082
1083 static void iwl3945_bg_beacon_update(struct work_struct *work)
1084 {
1085         struct iwl_priv *priv =
1086                 container_of(work, struct iwl_priv, beacon_update);
1087         struct sk_buff *beacon;
1088
1089         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1090         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1091
1092         if (!beacon) {
1093                 IWL_ERR(priv, "update beacon failed\n");
1094                 return;
1095         }
1096
1097         mutex_lock(&priv->mutex);
1098         /* new beacon skb is allocated every time; dispose previous.*/
1099         if (priv->ibss_beacon)
1100                 dev_kfree_skb(priv->ibss_beacon);
1101
1102         priv->ibss_beacon = beacon;
1103         mutex_unlock(&priv->mutex);
1104
1105         iwl3945_send_beacon_cmd(priv);
1106 }
1107
1108 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1109                                 struct iwl_rx_mem_buffer *rxb)
1110 {
1111 #ifdef CONFIG_IWLWIFI_DEBUG
1112         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1113         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1114         u8 rate = beacon->beacon_notify_hdr.rate;
1115
1116         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1117                 "tsf %d %d rate %d\n",
1118                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1119                 beacon->beacon_notify_hdr.failure_frame,
1120                 le32_to_cpu(beacon->ibss_mgr_status),
1121                 le32_to_cpu(beacon->high_tsf),
1122                 le32_to_cpu(beacon->low_tsf), rate);
1123 #endif
1124
1125         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1126             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1127                 queue_work(priv->workqueue, &priv->beacon_update);
1128 }
1129
1130 /* Handle notification from uCode that card's power state is changing
1131  * due to software, hardware, or critical temperature RFKILL */
1132 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1133                                     struct iwl_rx_mem_buffer *rxb)
1134 {
1135         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1136         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1137         unsigned long status = priv->status;
1138
1139         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1140                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1141                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1142
1143         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1144                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1145
1146         if (flags & HW_CARD_DISABLED)
1147                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1148         else
1149                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1150
1151
1152         if (flags & SW_CARD_DISABLED)
1153                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1154         else
1155                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1156
1157         iwl_scan_cancel(priv);
1158
1159         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1160              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1161             (test_bit(STATUS_RF_KILL_SW, &status) !=
1162              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1163                 queue_work(priv->workqueue, &priv->rf_kill);
1164         else
1165                 wake_up_interruptible(&priv->wait_command_queue);
1166 }
1167
1168 /**
1169  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1170  *
1171  * Setup the RX handlers for each of the reply types sent from the uCode
1172  * to the host.
1173  *
1174  * This function chains into the hardware specific files for them to setup
1175  * any hardware specific handlers as well.
1176  */
1177 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1178 {
1179         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1180         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1181         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1182         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1183         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1184         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1185             iwl_rx_pm_debug_statistics_notif;
1186         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1187
1188         /*
1189          * The same handler is used for both the REPLY to a discrete
1190          * statistics request from the host as well as for the periodic
1191          * statistics notifications (after received beacons) from the uCode.
1192          */
1193         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1194         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1195
1196         iwl_setup_spectrum_handlers(priv);
1197         iwl_setup_rx_scan_handlers(priv);
1198         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1199
1200         /* Set up hardware specific Rx handlers */
1201         iwl3945_hw_rx_handler_setup(priv);
1202 }
1203
1204 /************************** RX-FUNCTIONS ****************************/
1205 /*
1206  * Rx theory of operation
1207  *
1208  * The host allocates 32 DMA target addresses and passes the host address
1209  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1210  * 0 to 31
1211  *
1212  * Rx Queue Indexes
1213  * The host/firmware share two index registers for managing the Rx buffers.
1214  *
1215  * The READ index maps to the first position that the firmware may be writing
1216  * to -- the driver can read up to (but not including) this position and get
1217  * good data.
1218  * The READ index is managed by the firmware once the card is enabled.
1219  *
1220  * The WRITE index maps to the last position the driver has read from -- the
1221  * position preceding WRITE is the last slot the firmware can place a packet.
1222  *
1223  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1224  * WRITE = READ.
1225  *
1226  * During initialization, the host sets up the READ queue position to the first
1227  * INDEX position, and WRITE to the last (READ - 1 wrapped)
1228  *
1229  * When the firmware places a packet in a buffer, it will advance the READ index
1230  * and fire the RX interrupt.  The driver can then query the READ index and
1231  * process as many packets as possible, moving the WRITE index forward as it
1232  * resets the Rx queue buffers with new memory.
1233  *
1234  * The management in the driver is as follows:
1235  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
1236  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1237  *   to replenish the iwl->rxq->rx_free.
1238  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1239  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
1240  *   'processed' and 'read' driver indexes as well)
1241  * + A received packet is processed and handed to the kernel network stack,
1242  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
1243  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1244  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1245  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
1246  *   were enough free buffers and RX_STALLED is set it is cleared.
1247  *
1248  *
1249  * Driver sequence:
1250  *
1251  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
1252  *                            iwl3945_rx_queue_restock
1253  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1254  *                            queue, updates firmware pointers, and updates
1255  *                            the WRITE index.  If insufficient rx_free buffers
1256  *                            are available, schedules iwl3945_rx_replenish
1257  *
1258  * -- enable interrupts --
1259  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
1260  *                            READ INDEX, detaching the SKB from the pool.
1261  *                            Moves the packet buffer from queue to rx_used.
1262  *                            Calls iwl3945_rx_queue_restock to refill any empty
1263  *                            slots.
1264  * ...
1265  *
1266  */
1267
1268 /**
1269  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1270  */
1271 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1272                                           dma_addr_t dma_addr)
1273 {
1274         return cpu_to_le32((u32)dma_addr);
1275 }
1276
1277 /**
1278  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1279  *
1280  * If there are slots in the RX queue that need to be restocked,
1281  * and we have free pre-allocated buffers, fill the ranks as much
1282  * as we can, pulling from rx_free.
1283  *
1284  * This moves the 'write' index forward to catch up with 'processed', and
1285  * also updates the memory address in the firmware to reference the new
1286  * target buffer.
1287  */
1288 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1289 {
1290         struct iwl_rx_queue *rxq = &priv->rxq;
1291         struct list_head *element;
1292         struct iwl_rx_mem_buffer *rxb;
1293         unsigned long flags;
1294         int write, rc;
1295
1296         spin_lock_irqsave(&rxq->lock, flags);
1297         write = rxq->write & ~0x7;
1298         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1299                 /* Get next free Rx buffer, remove from free list */
1300                 element = rxq->rx_free.next;
1301                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1302                 list_del(element);
1303
1304                 /* Point to Rx buffer via next RBD in circular buffer */
1305                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1306                 rxq->queue[rxq->write] = rxb;
1307                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1308                 rxq->free_count--;
1309         }
1310         spin_unlock_irqrestore(&rxq->lock, flags);
1311         /* If the pre-allocated buffer pool is dropping low, schedule to
1312          * refill it */
1313         if (rxq->free_count <= RX_LOW_WATERMARK)
1314                 queue_work(priv->workqueue, &priv->rx_replenish);
1315
1316
1317         /* If we've added more space for the firmware to place data, tell it.
1318          * Increment device's write pointer in multiples of 8. */
1319         if ((write != (rxq->write & ~0x7))
1320             || (abs(rxq->write - rxq->read) > 7)) {
1321                 spin_lock_irqsave(&rxq->lock, flags);
1322                 rxq->need_update = 1;
1323                 spin_unlock_irqrestore(&rxq->lock, flags);
1324                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1325                 if (rc)
1326                         return rc;
1327         }
1328
1329         return 0;
1330 }
1331
1332 /**
1333  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1334  *
1335  * When moving to rx_free an SKB is allocated for the slot.
1336  *
1337  * Also restock the Rx queue via iwl3945_rx_queue_restock.
1338  * This is called as a scheduled work item (except for during initialization)
1339  */
1340 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1341 {
1342         struct iwl_rx_queue *rxq = &priv->rxq;
1343         struct list_head *element;
1344         struct iwl_rx_mem_buffer *rxb;
1345         unsigned long flags;
1346
1347         while (1) {
1348                 spin_lock_irqsave(&rxq->lock, flags);
1349
1350                 if (list_empty(&rxq->rx_used)) {
1351                         spin_unlock_irqrestore(&rxq->lock, flags);
1352                         return;
1353                 }
1354
1355                 element = rxq->rx_used.next;
1356                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1357                 list_del(element);
1358                 spin_unlock_irqrestore(&rxq->lock, flags);
1359
1360                 /* Alloc a new receive buffer */
1361                 rxb->skb =
1362                     alloc_skb(priv->hw_params.rx_buf_size,
1363                                 GFP_KERNEL);
1364                 if (!rxb->skb) {
1365                         if (net_ratelimit())
1366                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1367                         /* We don't reschedule replenish work here -- we will
1368                          * call the restock method and if it still needs
1369                          * more buffers it will schedule replenish */
1370                         break;
1371                 }
1372
1373                 /* If radiotap head is required, reserve some headroom here.
1374                  * The physical head count is a variable rx_stats->phy_count.
1375                  * We reserve 4 bytes here. Plus these extra bytes, the
1376                  * headroom of the physical head should be enough for the
1377                  * radiotap head that iwl3945 supported. See iwl3945_rt.
1378                  */
1379                 skb_reserve(rxb->skb, 4);
1380
1381                 /* Get physical address of RB/SKB */
1382                 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1383                                                 rxb->skb->data,
1384                                                 priv->hw_params.rx_buf_size,
1385                                                 PCI_DMA_FROMDEVICE);
1386
1387                 spin_lock_irqsave(&rxq->lock, flags);
1388                 list_add_tail(&rxb->list, &rxq->rx_free);
1389                 priv->alloc_rxb_skb++;
1390                 rxq->free_count++;
1391                 spin_unlock_irqrestore(&rxq->lock, flags);
1392         }
1393 }
1394
1395 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1396 {
1397         unsigned long flags;
1398         int i;
1399         spin_lock_irqsave(&rxq->lock, flags);
1400         INIT_LIST_HEAD(&rxq->rx_free);
1401         INIT_LIST_HEAD(&rxq->rx_used);
1402         /* Fill the rx_used queue with _all_ of the Rx buffers */
1403         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1404                 /* In the reset function, these buffers may have been allocated
1405                  * to an SKB, so we need to unmap and free potential storage */
1406                 if (rxq->pool[i].skb != NULL) {
1407                         pci_unmap_single(priv->pci_dev,
1408                                          rxq->pool[i].real_dma_addr,
1409                                          priv->hw_params.rx_buf_size,
1410                                          PCI_DMA_FROMDEVICE);
1411                         priv->alloc_rxb_skb--;
1412                         dev_kfree_skb(rxq->pool[i].skb);
1413                         rxq->pool[i].skb = NULL;
1414                 }
1415                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1416         }
1417
1418         /* Set us so that we have processed and used all buffers, but have
1419          * not restocked the Rx queue with fresh buffers */
1420         rxq->read = rxq->write = 0;
1421         rxq->free_count = 0;
1422         spin_unlock_irqrestore(&rxq->lock, flags);
1423 }
1424
1425 void iwl3945_rx_replenish(void *data)
1426 {
1427         struct iwl_priv *priv = data;
1428         unsigned long flags;
1429
1430         iwl3945_rx_allocate(priv);
1431
1432         spin_lock_irqsave(&priv->lock, flags);
1433         iwl3945_rx_queue_restock(priv);
1434         spin_unlock_irqrestore(&priv->lock, flags);
1435 }
1436
1437 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1438  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1439  * This free routine walks the list of POOL entries and if SKB is set to
1440  * non NULL it is unmapped and freed
1441  */
1442 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1443 {
1444         int i;
1445         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1446                 if (rxq->pool[i].skb != NULL) {
1447                         pci_unmap_single(priv->pci_dev,
1448                                          rxq->pool[i].real_dma_addr,
1449                                          priv->hw_params.rx_buf_size,
1450                                          PCI_DMA_FROMDEVICE);
1451                         dev_kfree_skb(rxq->pool[i].skb);
1452                 }
1453         }
1454
1455         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1456                             rxq->dma_addr);
1457         pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1458                             rxq->rb_stts, rxq->rb_stts_dma);
1459         rxq->bd = NULL;
1460         rxq->rb_stts  = NULL;
1461 }
1462
1463
1464 /* Convert linear signal-to-noise ratio into dB */
1465 static u8 ratio2dB[100] = {
1466 /*       0   1   2   3   4   5   6   7   8   9 */
1467          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1468         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1469         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1470         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1471         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1472         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1473         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1474         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1475         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1476         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
1477 };
1478
1479 /* Calculates a relative dB value from a ratio of linear
1480  *   (i.e. not dB) signal levels.
1481  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1482 int iwl3945_calc_db_from_ratio(int sig_ratio)
1483 {
1484         /* 1000:1 or higher just report as 60 dB */
1485         if (sig_ratio >= 1000)
1486                 return 60;
1487
1488         /* 100:1 or higher, divide by 10 and use table,
1489          *   add 20 dB to make up for divide by 10 */
1490         if (sig_ratio >= 100)
1491                 return 20 + (int)ratio2dB[sig_ratio/10];
1492
1493         /* We shouldn't see this */
1494         if (sig_ratio < 1)
1495                 return 0;
1496
1497         /* Use table for ratios 1:1 - 99:1 */
1498         return (int)ratio2dB[sig_ratio];
1499 }
1500
1501 #define PERFECT_RSSI (-20) /* dBm */
1502 #define WORST_RSSI (-95)   /* dBm */
1503 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1504
1505 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1506  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1507  *   about formulas used below. */
1508 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1509 {
1510         int sig_qual;
1511         int degradation = PERFECT_RSSI - rssi_dbm;
1512
1513         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1514          * as indicator; formula is (signal dbm - noise dbm).
1515          * SNR at or above 40 is a great signal (100%).
1516          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1517          * Weakest usable signal is usually 10 - 15 dB SNR. */
1518         if (noise_dbm) {
1519                 if (rssi_dbm - noise_dbm >= 40)
1520                         return 100;
1521                 else if (rssi_dbm < noise_dbm)
1522                         return 0;
1523                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1524
1525         /* Else use just the signal level.
1526          * This formula is a least squares fit of data points collected and
1527          *   compared with a reference system that had a percentage (%) display
1528          *   for signal quality. */
1529         } else
1530                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1531                             (15 * RSSI_RANGE + 62 * degradation)) /
1532                            (RSSI_RANGE * RSSI_RANGE);
1533
1534         if (sig_qual > 100)
1535                 sig_qual = 100;
1536         else if (sig_qual < 1)
1537                 sig_qual = 0;
1538
1539         return sig_qual;
1540 }
1541
1542 /**
1543  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1544  *
1545  * Uses the priv->rx_handlers callback function array to invoke
1546  * the appropriate handlers, including command responses,
1547  * frame-received notifications, and other notifications.
1548  */
1549 static void iwl3945_rx_handle(struct iwl_priv *priv)
1550 {
1551         struct iwl_rx_mem_buffer *rxb;
1552         struct iwl_rx_packet *pkt;
1553         struct iwl_rx_queue *rxq = &priv->rxq;
1554         u32 r, i;
1555         int reclaim;
1556         unsigned long flags;
1557         u8 fill_rx = 0;
1558         u32 count = 8;
1559
1560         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1561          * buffer that the driver may process (last buffer filled by ucode). */
1562         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1563         i = rxq->read;
1564
1565         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1566                 fill_rx = 1;
1567         /* Rx interrupt, but nothing sent from uCode */
1568         if (i == r)
1569                 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1570
1571         while (i != r) {
1572                 rxb = rxq->queue[i];
1573
1574                 /* If an RXB doesn't have a Rx queue slot associated with it,
1575                  * then a bug has been introduced in the queue refilling
1576                  * routines -- catch it here */
1577                 BUG_ON(rxb == NULL);
1578
1579                 rxq->queue[i] = NULL;
1580
1581                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1582                                 priv->hw_params.rx_buf_size,
1583                                 PCI_DMA_FROMDEVICE);
1584                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1585
1586                 /* Reclaim a command buffer only if this packet is a response
1587                  *   to a (driver-originated) command.
1588                  * If the packet (e.g. Rx frame) originated from uCode,
1589                  *   there is no command buffer to reclaim.
1590                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1591                  *   but apparently a few don't get set; catch them here. */
1592                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1593                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1594                         (pkt->hdr.cmd != REPLY_TX);
1595
1596                 /* Based on type of command response or notification,
1597                  *   handle those that need handling via function in
1598                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
1599                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1600                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1601                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1602                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1603                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1604                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1605                 } else {
1606                         /* No handling needed */
1607                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1608                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1609                                 r, i, get_cmd_string(pkt->hdr.cmd),
1610                                 pkt->hdr.cmd);
1611                 }
1612
1613                 if (reclaim) {
1614                         /* Invoke any callbacks, transfer the skb to caller, and
1615                          * fire off the (possibly) blocking iwl_send_cmd()
1616                          * as we reclaim the driver command queue */
1617                         if (rxb && rxb->skb)
1618                                 iwl_tx_cmd_complete(priv, rxb);
1619                         else
1620                                 IWL_WARN(priv, "Claim null rxb?\n");
1621                 }
1622
1623                 /* For now we just don't re-use anything.  We can tweak this
1624                  * later to try and re-use notification packets and SKBs that
1625                  * fail to Rx correctly */
1626                 if (rxb->skb != NULL) {
1627                         priv->alloc_rxb_skb--;
1628                         dev_kfree_skb_any(rxb->skb);
1629                         rxb->skb = NULL;
1630                 }
1631
1632                 spin_lock_irqsave(&rxq->lock, flags);
1633                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1634                 spin_unlock_irqrestore(&rxq->lock, flags);
1635                 i = (i + 1) & RX_QUEUE_MASK;
1636                 /* If there are a lot of unused frames,
1637                  * restock the Rx queue so ucode won't assert. */
1638                 if (fill_rx) {
1639                         count++;
1640                         if (count >= 8) {
1641                                 priv->rxq.read = i;
1642                                 iwl3945_rx_queue_restock(priv);
1643                                 count = 0;
1644                         }
1645                 }
1646         }
1647
1648         /* Backtrack one entry */
1649         priv->rxq.read = i;
1650         iwl3945_rx_queue_restock(priv);
1651 }
1652
1653 /* call this function to flush any scheduled tasklet */
1654 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1655 {
1656         /* wait to make sure we flush pending tasklet*/
1657         synchronize_irq(priv->pci_dev->irq);
1658         tasklet_kill(&priv->irq_tasklet);
1659 }
1660
1661 static const char *desc_lookup(int i)
1662 {
1663         switch (i) {
1664         case 1:
1665                 return "FAIL";
1666         case 2:
1667                 return "BAD_PARAM";
1668         case 3:
1669                 return "BAD_CHECKSUM";
1670         case 4:
1671                 return "NMI_INTERRUPT";
1672         case 5:
1673                 return "SYSASSERT";
1674         case 6:
1675                 return "FATAL_ERROR";
1676         }
1677
1678         return "UNKNOWN";
1679 }
1680
1681 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1682 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1683
1684 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1685 {
1686         u32 i;
1687         u32 desc, time, count, base, data1;
1688         u32 blink1, blink2, ilink1, ilink2;
1689
1690         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1691
1692         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1693                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1694                 return;
1695         }
1696
1697
1698         count = iwl_read_targ_mem(priv, base);
1699
1700         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1701                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1702                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1703                         priv->status, count);
1704         }
1705
1706         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
1707                   "ilink1  nmiPC   Line\n");
1708         for (i = ERROR_START_OFFSET;
1709              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1710              i += ERROR_ELEM_SIZE) {
1711                 desc = iwl_read_targ_mem(priv, base + i);
1712                 time =
1713                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1714                 blink1 =
1715                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1716                 blink2 =
1717                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1718                 ilink1 =
1719                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1720                 ilink2 =
1721                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1722                 data1 =
1723                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1724
1725                 IWL_ERR(priv,
1726                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1727                         desc_lookup(desc), desc, time, blink1, blink2,
1728                         ilink1, ilink2, data1);
1729         }
1730
1731 }
1732
1733 #define EVENT_START_OFFSET  (6 * sizeof(u32))
1734
1735 /**
1736  * iwl3945_print_event_log - Dump error event log to syslog
1737  *
1738  */
1739 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1740                                 u32 num_events, u32 mode)
1741 {
1742         u32 i;
1743         u32 base;       /* SRAM byte address of event log header */
1744         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1745         u32 ptr;        /* SRAM byte address of log data */
1746         u32 ev, time, data; /* event log data */
1747
1748         if (num_events == 0)
1749                 return;
1750
1751         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1752
1753         if (mode == 0)
1754                 event_size = 2 * sizeof(u32);
1755         else
1756                 event_size = 3 * sizeof(u32);
1757
1758         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1759
1760         /* "time" is actually "data" for mode 0 (no timestamp).
1761          * place event id # at far right for easier visual parsing. */
1762         for (i = 0; i < num_events; i++) {
1763                 ev = iwl_read_targ_mem(priv, ptr);
1764                 ptr += sizeof(u32);
1765                 time = iwl_read_targ_mem(priv, ptr);
1766                 ptr += sizeof(u32);
1767                 if (mode == 0) {
1768                         /* data, ev */
1769                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1770                 } else {
1771                         data = iwl_read_targ_mem(priv, ptr);
1772                         ptr += sizeof(u32);
1773                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1774                 }
1775         }
1776 }
1777
1778 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1779 {
1780         u32 base;       /* SRAM byte address of event log header */
1781         u32 capacity;   /* event log capacity in # entries */
1782         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1783         u32 num_wraps;  /* # times uCode wrapped to top of log */
1784         u32 next_entry; /* index of next entry to be written by uCode */
1785         u32 size;       /* # entries that we'll print */
1786
1787         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1788         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1789                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1790                 return;
1791         }
1792
1793         /* event log header */
1794         capacity = iwl_read_targ_mem(priv, base);
1795         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1796         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1797         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1798
1799         size = num_wraps ? capacity : next_entry;
1800
1801         /* bail out if nothing in log */
1802         if (size == 0) {
1803                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1804                 return;
1805         }
1806
1807         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1808                   size, num_wraps);
1809
1810         /* if uCode has wrapped back to top of log, start at the oldest entry,
1811          * i.e the next one that uCode would fill. */
1812         if (num_wraps)
1813                 iwl3945_print_event_log(priv, next_entry,
1814                                     capacity - next_entry, mode);
1815
1816         /* (then/else) start at top of log */
1817         iwl3945_print_event_log(priv, 0, next_entry, mode);
1818
1819 }
1820
1821 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1822 {
1823         u32 inta, handled = 0;
1824         u32 inta_fh;
1825         unsigned long flags;
1826 #ifdef CONFIG_IWLWIFI_DEBUG
1827         u32 inta_mask;
1828 #endif
1829
1830         spin_lock_irqsave(&priv->lock, flags);
1831
1832         /* Ack/clear/reset pending uCode interrupts.
1833          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1834          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1835         inta = iwl_read32(priv, CSR_INT);
1836         iwl_write32(priv, CSR_INT, inta);
1837
1838         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1839          * Any new interrupts that happen after this, either while we're
1840          * in this tasklet, or later, will show up in next ISR/tasklet. */
1841         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1842         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1843
1844 #ifdef CONFIG_IWLWIFI_DEBUG
1845         if (priv->debug_level & IWL_DL_ISR) {
1846                 /* just for debug */
1847                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1848                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1849                               inta, inta_mask, inta_fh);
1850         }
1851 #endif
1852
1853         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1854          * atomic, make sure that inta covers all the interrupts that
1855          * we've discovered, even if FH interrupt came in just after
1856          * reading CSR_INT. */
1857         if (inta_fh & CSR39_FH_INT_RX_MASK)
1858                 inta |= CSR_INT_BIT_FH_RX;
1859         if (inta_fh & CSR39_FH_INT_TX_MASK)
1860                 inta |= CSR_INT_BIT_FH_TX;
1861
1862         /* Now service all interrupt bits discovered above. */
1863         if (inta & CSR_INT_BIT_HW_ERR) {
1864                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
1865
1866                 /* Tell the device to stop sending interrupts */
1867                 iwl_disable_interrupts(priv);
1868
1869                 priv->isr_stats.hw++;
1870                 iwl_irq_handle_error(priv);
1871
1872                 handled |= CSR_INT_BIT_HW_ERR;
1873
1874                 spin_unlock_irqrestore(&priv->lock, flags);
1875
1876                 return;
1877         }
1878
1879 #ifdef CONFIG_IWLWIFI_DEBUG
1880         if (priv->debug_level & (IWL_DL_ISR)) {
1881                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1882                 if (inta & CSR_INT_BIT_SCD) {
1883                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1884                                       "the frame/frames.\n");
1885                         priv->isr_stats.sch++;
1886                 }
1887
1888                 /* Alive notification via Rx interrupt will do the real work */
1889                 if (inta & CSR_INT_BIT_ALIVE) {
1890                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1891                         priv->isr_stats.alive++;
1892                 }
1893         }
1894 #endif
1895         /* Safely ignore these bits for debug checks below */
1896         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1897
1898         /* Error detected by uCode */
1899         if (inta & CSR_INT_BIT_SW_ERR) {
1900                 IWL_ERR(priv, "Microcode SW error detected. "
1901                         "Restarting 0x%X.\n", inta);
1902                 priv->isr_stats.sw++;
1903                 priv->isr_stats.sw_err = inta;
1904                 iwl_irq_handle_error(priv);
1905                 handled |= CSR_INT_BIT_SW_ERR;
1906         }
1907
1908         /* uCode wakes up after power-down sleep */
1909         if (inta & CSR_INT_BIT_WAKEUP) {
1910                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1911                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1912                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1913                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1914                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1915                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1916                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1917                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1918
1919                 priv->isr_stats.wakeup++;
1920                 handled |= CSR_INT_BIT_WAKEUP;
1921         }
1922
1923         /* All uCode command responses, including Tx command responses,
1924          * Rx "responses" (frame-received notification), and other
1925          * notifications from uCode come through here*/
1926         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1927                 iwl3945_rx_handle(priv);
1928                 priv->isr_stats.rx++;
1929                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1930         }
1931
1932         if (inta & CSR_INT_BIT_FH_TX) {
1933                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1934                 priv->isr_stats.tx++;
1935
1936                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1937                 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1938                                         (FH39_SRVC_CHNL), 0x0);
1939                 handled |= CSR_INT_BIT_FH_TX;
1940         }
1941
1942         if (inta & ~handled) {
1943                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1944                 priv->isr_stats.unhandled++;
1945         }
1946
1947         if (inta & ~CSR_INI_SET_MASK) {
1948                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1949                          inta & ~CSR_INI_SET_MASK);
1950                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1951         }
1952
1953         /* Re-enable all interrupts */
1954         /* only Re-enable if disabled by irq */
1955         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1956                 iwl_enable_interrupts(priv);
1957
1958 #ifdef CONFIG_IWLWIFI_DEBUG
1959         if (priv->debug_level & (IWL_DL_ISR)) {
1960                 inta = iwl_read32(priv, CSR_INT);
1961                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1962                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1963                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1964                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1965         }
1966 #endif
1967         spin_unlock_irqrestore(&priv->lock, flags);
1968 }
1969
1970 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1971                                          enum ieee80211_band band,
1972                                      u8 is_active, u8 n_probes,
1973                                      struct iwl3945_scan_channel *scan_ch)
1974 {
1975         const struct ieee80211_channel *channels = NULL;
1976         const struct ieee80211_supported_band *sband;
1977         const struct iwl_channel_info *ch_info;
1978         u16 passive_dwell = 0;
1979         u16 active_dwell = 0;
1980         int added, i;
1981
1982         sband = iwl_get_hw_mode(priv, band);
1983         if (!sband)
1984                 return 0;
1985
1986         channels = sband->channels;
1987
1988         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1989         passive_dwell = iwl_get_passive_dwell_time(priv, band);
1990
1991         if (passive_dwell <= active_dwell)
1992                 passive_dwell = active_dwell + 1;
1993
1994         for (i = 0, added = 0; i < sband->n_channels; i++) {
1995                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
1996                         continue;
1997
1998                 scan_ch->channel = channels[i].hw_value;
1999
2000                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2001                 if (!is_channel_valid(ch_info)) {
2002                         IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2003                                        scan_ch->channel);
2004                         continue;
2005                 }
2006
2007                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2008                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2009                 /* If passive , set up for auto-switch
2010                  *  and use long active_dwell time.
2011                  */
2012                 if (!is_active || is_channel_passive(ch_info) ||
2013                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2014                         scan_ch->type = 0;      /* passive */
2015                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
2016                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2017                 } else {
2018                         scan_ch->type = 1;      /* active */
2019                 }
2020
2021                 /* Set direct probe bits. These may be used both for active
2022                  * scan channels (probes gets sent right away),
2023                  * or for passive channels (probes get se sent only after
2024                  * hearing clear Rx packet).*/
2025                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2026                         if (n_probes)
2027                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2028                 } else {
2029                         /* uCode v1 does not allow setting direct probe bits on
2030                          * passive channel. */
2031                         if ((scan_ch->type & 1) && n_probes)
2032                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2033                 }
2034
2035                 /* Set txpower levels to defaults */
2036                 scan_ch->tpc.dsp_atten = 110;
2037                 /* scan_pwr_info->tpc.dsp_atten; */
2038
2039                 /*scan_pwr_info->tpc.tx_gain; */
2040                 if (band == IEEE80211_BAND_5GHZ)
2041                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2042                 else {
2043                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2044                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2045                          * power level:
2046                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2047                          */
2048                 }
2049
2050                 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2051                                scan_ch->channel,
2052                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2053                                (scan_ch->type & 1) ?
2054                                active_dwell : passive_dwell);
2055
2056                 scan_ch++;
2057                 added++;
2058         }
2059
2060         IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2061         return added;
2062 }
2063
2064 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2065                               struct ieee80211_rate *rates)
2066 {
2067         int i;
2068
2069         for (i = 0; i < IWL_RATE_COUNT; i++) {
2070                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2071                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2072                 rates[i].hw_value_short = i;
2073                 rates[i].flags = 0;
2074                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2075                         /*
2076                          * If CCK != 1M then set short preamble rate flag.
2077                          */
2078                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2079                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2080                 }
2081         }
2082 }
2083
2084 /******************************************************************************
2085  *
2086  * uCode download functions
2087  *
2088  ******************************************************************************/
2089
2090 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2091 {
2092         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2093         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2094         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2095         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2096         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2097         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2098 }
2099
2100 /**
2101  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2102  *     looking at all data.
2103  */
2104 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2105 {
2106         u32 val;
2107         u32 save_len = len;
2108         int rc = 0;
2109         u32 errcnt;
2110
2111         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2112
2113         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2114                                IWL39_RTC_INST_LOWER_BOUND);
2115
2116         errcnt = 0;
2117         for (; len > 0; len -= sizeof(u32), image++) {
2118                 /* read data comes through single port, auto-incr addr */
2119                 /* NOTE: Use the debugless read so we don't flood kernel log
2120                  * if IWL_DL_IO is set */
2121                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2122                 if (val != le32_to_cpu(*image)) {
2123                         IWL_ERR(priv, "uCode INST section is invalid at "
2124                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2125                                   save_len - len, val, le32_to_cpu(*image));
2126                         rc = -EIO;
2127                         errcnt++;
2128                         if (errcnt >= 20)
2129                                 break;
2130                 }
2131         }
2132
2133
2134         if (!errcnt)
2135                 IWL_DEBUG_INFO(priv,
2136                         "ucode image in INSTRUCTION memory is good\n");
2137
2138         return rc;
2139 }
2140
2141
2142 /**
2143  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2144  *   using sample data 100 bytes apart.  If these sample points are good,
2145  *   it's a pretty good bet that everything between them is good, too.
2146  */
2147 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2148 {
2149         u32 val;
2150         int rc = 0;
2151         u32 errcnt = 0;
2152         u32 i;
2153
2154         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2155
2156         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2157                 /* read data comes through single port, auto-incr addr */
2158                 /* NOTE: Use the debugless read so we don't flood kernel log
2159                  * if IWL_DL_IO is set */
2160                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2161                         i + IWL39_RTC_INST_LOWER_BOUND);
2162                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2163                 if (val != le32_to_cpu(*image)) {
2164 #if 0 /* Enable this if you want to see details */
2165                         IWL_ERR(priv, "uCode INST section is invalid at "
2166                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2167                                   i, val, *image);
2168 #endif
2169                         rc = -EIO;
2170                         errcnt++;
2171                         if (errcnt >= 3)
2172                                 break;
2173                 }
2174         }
2175
2176         return rc;
2177 }
2178
2179
2180 /**
2181  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2182  *    and verify its contents
2183  */
2184 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2185 {
2186         __le32 *image;
2187         u32 len;
2188         int rc = 0;
2189
2190         /* Try bootstrap */
2191         image = (__le32 *)priv->ucode_boot.v_addr;
2192         len = priv->ucode_boot.len;
2193         rc = iwl3945_verify_inst_sparse(priv, image, len);
2194         if (rc == 0) {
2195                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2196                 return 0;
2197         }
2198
2199         /* Try initialize */
2200         image = (__le32 *)priv->ucode_init.v_addr;
2201         len = priv->ucode_init.len;
2202         rc = iwl3945_verify_inst_sparse(priv, image, len);
2203         if (rc == 0) {
2204                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2205                 return 0;
2206         }
2207
2208         /* Try runtime/protocol */
2209         image = (__le32 *)priv->ucode_code.v_addr;
2210         len = priv->ucode_code.len;
2211         rc = iwl3945_verify_inst_sparse(priv, image, len);
2212         if (rc == 0) {
2213                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2214                 return 0;
2215         }
2216
2217         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2218
2219         /* Since nothing seems to match, show first several data entries in
2220          * instruction SRAM, so maybe visual inspection will give a clue.
2221          * Selection of bootstrap image (vs. other images) is arbitrary. */
2222         image = (__le32 *)priv->ucode_boot.v_addr;
2223         len = priv->ucode_boot.len;
2224         rc = iwl3945_verify_inst_full(priv, image, len);
2225
2226         return rc;
2227 }
2228
2229 static void iwl3945_nic_start(struct iwl_priv *priv)
2230 {
2231         /* Remove all resets to allow NIC to operate */
2232         iwl_write32(priv, CSR_RESET, 0);
2233 }
2234
2235 /**
2236  * iwl3945_read_ucode - Read uCode images from disk file.
2237  *
2238  * Copy into buffers for card to fetch via bus-mastering
2239  */
2240 static int iwl3945_read_ucode(struct iwl_priv *priv)
2241 {
2242         struct iwl_ucode *ucode;
2243         int ret = -EINVAL, index;
2244         const struct firmware *ucode_raw;
2245         /* firmware file name contains uCode/driver compatibility version */
2246         const char *name_pre = priv->cfg->fw_name_pre;
2247         const unsigned int api_max = priv->cfg->ucode_api_max;
2248         const unsigned int api_min = priv->cfg->ucode_api_min;
2249         char buf[25];
2250         u8 *src;
2251         size_t len;
2252         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2253
2254         /* Ask kernel firmware_class module to get the boot firmware off disk.
2255          * request_firmware() is synchronous, file is in memory on return. */
2256         for (index = api_max; index >= api_min; index--) {
2257                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2258                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2259                 if (ret < 0) {
2260                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
2261                                   buf, ret);
2262                         if (ret == -ENOENT)
2263                                 continue;
2264                         else
2265                                 goto error;
2266                 } else {
2267                         if (index < api_max)
2268                                 IWL_ERR(priv, "Loaded firmware %s, "
2269                                         "which is deprecated. "
2270                                         " Please use API v%u instead.\n",
2271                                           buf, api_max);
2272                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2273                                        "(%zd bytes) from disk\n",
2274                                        buf, ucode_raw->size);
2275                         break;
2276                 }
2277         }
2278
2279         if (ret < 0)
2280                 goto error;
2281
2282         /* Make sure that we got at least our header! */
2283         if (ucode_raw->size < sizeof(*ucode)) {
2284                 IWL_ERR(priv, "File size way too small!\n");
2285                 ret = -EINVAL;
2286                 goto err_release;
2287         }
2288
2289         /* Data from ucode file:  header followed by uCode images */
2290         ucode = (void *)ucode_raw->data;
2291
2292         priv->ucode_ver = le32_to_cpu(ucode->ver);
2293         api_ver = IWL_UCODE_API(priv->ucode_ver);
2294         inst_size = le32_to_cpu(ucode->inst_size);
2295         data_size = le32_to_cpu(ucode->data_size);
2296         init_size = le32_to_cpu(ucode->init_size);
2297         init_data_size = le32_to_cpu(ucode->init_data_size);
2298         boot_size = le32_to_cpu(ucode->boot_size);
2299
2300         /* api_ver should match the api version forming part of the
2301          * firmware filename ... but we don't check for that and only rely
2302          * on the API version read from firmware header from here on forward */
2303
2304         if (api_ver < api_min || api_ver > api_max) {
2305                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2306                           "Driver supports v%u, firmware is v%u.\n",
2307                           api_max, api_ver);
2308                 priv->ucode_ver = 0;
2309                 ret = -EINVAL;
2310                 goto err_release;
2311         }
2312         if (api_ver != api_max)
2313                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2314                           "got %u. New firmware can be obtained "
2315                           "from http://www.intellinuxwireless.org.\n",
2316                           api_max, api_ver);
2317
2318         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2319                 IWL_UCODE_MAJOR(priv->ucode_ver),
2320                 IWL_UCODE_MINOR(priv->ucode_ver),
2321                 IWL_UCODE_API(priv->ucode_ver),
2322                 IWL_UCODE_SERIAL(priv->ucode_ver));
2323
2324         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2325                        priv->ucode_ver);
2326         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2327                        inst_size);
2328         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2329                        data_size);
2330         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2331                        init_size);
2332         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2333                        init_data_size);
2334         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2335                        boot_size);
2336
2337
2338         /* Verify size of file vs. image size info in file's header */
2339         if (ucode_raw->size < sizeof(*ucode) +
2340                 inst_size + data_size + init_size +
2341                 init_data_size + boot_size) {
2342
2343                 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2344                                ucode_raw->size);
2345                 ret = -EINVAL;
2346                 goto err_release;
2347         }
2348
2349         /* Verify that uCode images will fit in card's SRAM */
2350         if (inst_size > IWL39_MAX_INST_SIZE) {
2351                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2352                                inst_size);
2353                 ret = -EINVAL;
2354                 goto err_release;
2355         }
2356
2357         if (data_size > IWL39_MAX_DATA_SIZE) {
2358                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2359                                data_size);
2360                 ret = -EINVAL;
2361                 goto err_release;
2362         }
2363         if (init_size > IWL39_MAX_INST_SIZE) {
2364                 IWL_DEBUG_INFO(priv,
2365                                 "uCode init instr len %d too large to fit in\n",
2366                                 init_size);
2367                 ret = -EINVAL;
2368                 goto err_release;
2369         }
2370         if (init_data_size > IWL39_MAX_DATA_SIZE) {
2371                 IWL_DEBUG_INFO(priv,
2372                                 "uCode init data len %d too large to fit in\n",
2373                                 init_data_size);
2374                 ret = -EINVAL;
2375                 goto err_release;
2376         }
2377         if (boot_size > IWL39_MAX_BSM_SIZE) {
2378                 IWL_DEBUG_INFO(priv,
2379                                 "uCode boot instr len %d too large to fit in\n",
2380                                 boot_size);
2381                 ret = -EINVAL;
2382                 goto err_release;
2383         }
2384
2385         /* Allocate ucode buffers for card's bus-master loading ... */
2386
2387         /* Runtime instructions and 2 copies of data:
2388          * 1) unmodified from disk
2389          * 2) backup cache for save/restore during power-downs */
2390         priv->ucode_code.len = inst_size;
2391         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2392
2393         priv->ucode_data.len = data_size;
2394         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2395
2396         priv->ucode_data_backup.len = data_size;
2397         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2398
2399         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2400             !priv->ucode_data_backup.v_addr)
2401                 goto err_pci_alloc;
2402
2403         /* Initialization instructions and data */
2404         if (init_size && init_data_size) {
2405                 priv->ucode_init.len = init_size;
2406                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2407
2408                 priv->ucode_init_data.len = init_data_size;
2409                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2410
2411                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2412                         goto err_pci_alloc;
2413         }
2414
2415         /* Bootstrap (instructions only, no data) */
2416         if (boot_size) {
2417                 priv->ucode_boot.len = boot_size;
2418                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2419
2420                 if (!priv->ucode_boot.v_addr)
2421                         goto err_pci_alloc;
2422         }
2423
2424         /* Copy images into buffers for card's bus-master reads ... */
2425
2426         /* Runtime instructions (first block of data in file) */
2427         src = &ucode->data[0];
2428         len = priv->ucode_code.len;
2429         IWL_DEBUG_INFO(priv,
2430                 "Copying (but not loading) uCode instr len %zd\n", len);
2431         memcpy(priv->ucode_code.v_addr, src, len);
2432         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2433                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2434
2435         /* Runtime data (2nd block)
2436          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
2437         src = &ucode->data[inst_size];
2438         len = priv->ucode_data.len;
2439         IWL_DEBUG_INFO(priv,
2440                 "Copying (but not loading) uCode data len %zd\n", len);
2441         memcpy(priv->ucode_data.v_addr, src, len);
2442         memcpy(priv->ucode_data_backup.v_addr, src, len);
2443
2444         /* Initialization instructions (3rd block) */
2445         if (init_size) {
2446                 src = &ucode->data[inst_size + data_size];
2447                 len = priv->ucode_init.len;
2448                 IWL_DEBUG_INFO(priv,
2449                         "Copying (but not loading) init instr len %zd\n", len);
2450                 memcpy(priv->ucode_init.v_addr, src, len);
2451         }
2452
2453         /* Initialization data (4th block) */
2454         if (init_data_size) {
2455                 src = &ucode->data[inst_size + data_size + init_size];
2456                 len = priv->ucode_init_data.len;
2457                 IWL_DEBUG_INFO(priv,
2458                         "Copying (but not loading) init data len %zd\n", len);
2459                 memcpy(priv->ucode_init_data.v_addr, src, len);
2460         }
2461
2462         /* Bootstrap instructions (5th block) */
2463         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2464         len = priv->ucode_boot.len;
2465         IWL_DEBUG_INFO(priv,
2466                 "Copying (but not loading) boot instr len %zd\n", len);
2467         memcpy(priv->ucode_boot.v_addr, src, len);
2468
2469         /* We have our copies now, allow OS release its copies */
2470         release_firmware(ucode_raw);
2471         return 0;
2472
2473  err_pci_alloc:
2474         IWL_ERR(priv, "failed to allocate pci memory\n");
2475         ret = -ENOMEM;
2476         iwl3945_dealloc_ucode_pci(priv);
2477
2478  err_release:
2479         release_firmware(ucode_raw);
2480
2481  error:
2482         return ret;
2483 }
2484
2485
2486 /**
2487  * iwl3945_set_ucode_ptrs - Set uCode address location
2488  *
2489  * Tell initialization uCode where to find runtime uCode.
2490  *
2491  * BSM registers initially contain pointers to initialization uCode.
2492  * We need to replace them to load runtime uCode inst and data,
2493  * and to save runtime data when powering down.
2494  */
2495 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2496 {
2497         dma_addr_t pinst;
2498         dma_addr_t pdata;
2499
2500         /* bits 31:0 for 3945 */
2501         pinst = priv->ucode_code.p_addr;
2502         pdata = priv->ucode_data_backup.p_addr;
2503
2504         /* Tell bootstrap uCode where to find image to load */
2505         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2506         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2507         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2508                                  priv->ucode_data.len);
2509
2510         /* Inst byte count must be last to set up, bit 31 signals uCode
2511          *   that all new ptr/size info is in place */
2512         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2513                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2514
2515         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2516
2517         return 0;
2518 }
2519
2520 /**
2521  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2522  *
2523  * Called after REPLY_ALIVE notification received from "initialize" uCode.
2524  *
2525  * Tell "initialize" uCode to go ahead and load the runtime uCode.
2526  */
2527 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2528 {
2529         /* Check alive response for "valid" sign from uCode */
2530         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2531                 /* We had an error bringing up the hardware, so take it
2532                  * all the way back down so we can try again */
2533                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2534                 goto restart;
2535         }
2536
2537         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2538          * This is a paranoid check, because we would not have gotten the
2539          * "initialize" alive if code weren't properly loaded.  */
2540         if (iwl3945_verify_ucode(priv)) {
2541                 /* Runtime instruction load was bad;
2542                  * take it all the way back down so we can try again */
2543                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2544                 goto restart;
2545         }
2546
2547         /* Send pointers to protocol/runtime uCode image ... init code will
2548          * load and launch runtime uCode, which will send us another "Alive"
2549          * notification. */
2550         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2551         if (iwl3945_set_ucode_ptrs(priv)) {
2552                 /* Runtime instruction load won't happen;
2553                  * take it all the way back down so we can try again */
2554                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2555                 goto restart;
2556         }
2557         return;
2558
2559  restart:
2560         queue_work(priv->workqueue, &priv->restart);
2561 }
2562
2563 /**
2564  * iwl3945_alive_start - called after REPLY_ALIVE notification received
2565  *                   from protocol/runtime uCode (initialization uCode's
2566  *                   Alive gets handled by iwl3945_init_alive_start()).
2567  */
2568 static void iwl3945_alive_start(struct iwl_priv *priv)
2569 {
2570         int thermal_spin = 0;
2571         u32 rfkill;
2572
2573         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2574
2575         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2576                 /* We had an error bringing up the hardware, so take it
2577                  * all the way back down so we can try again */
2578                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2579                 goto restart;
2580         }
2581
2582         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2583          * This is a paranoid check, because we would not have gotten the
2584          * "runtime" alive if code weren't properly loaded.  */
2585         if (iwl3945_verify_ucode(priv)) {
2586                 /* Runtime instruction load was bad;
2587                  * take it all the way back down so we can try again */
2588                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2589                 goto restart;
2590         }
2591
2592         priv->cfg->ops->smgmt->clear_station_table(priv);
2593
2594         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2595         IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2596
2597         if (rfkill & 0x1) {
2598                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2599                 /* if RFKILL is not on, then wait for thermal
2600                  * sensor in adapter to kick in */
2601                 while (iwl3945_hw_get_temperature(priv) == 0) {
2602                         thermal_spin++;
2603                         udelay(10);
2604                 }
2605
2606                 if (thermal_spin)
2607                         IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2608                                        thermal_spin * 10);
2609         } else
2610                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2611
2612         /* After the ALIVE response, we can send commands to 3945 uCode */
2613         set_bit(STATUS_ALIVE, &priv->status);
2614
2615         if (iwl_is_rfkill(priv))
2616                 return;
2617
2618         ieee80211_wake_queues(priv->hw);
2619
2620         priv->active_rate = priv->rates_mask;
2621         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2622
2623         iwl_power_update_mode(priv, false);
2624
2625         if (iwl_is_associated(priv)) {
2626                 struct iwl3945_rxon_cmd *active_rxon =
2627                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2628
2629                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2630                        sizeof(priv->staging_rxon));
2631                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2632         } else {
2633                 /* Initialize our rx_config data */
2634                 iwl_connection_init_rx_config(priv, priv->iw_mode);
2635         }
2636
2637         /* Configure Bluetooth device coexistence support */
2638         iwl_send_bt_config(priv);
2639
2640         /* Configure the adapter for unassociated operation */
2641         iwlcore_commit_rxon(priv);
2642
2643         iwl3945_reg_txpower_periodic(priv);
2644
2645         iwl3945_led_register(priv);
2646
2647         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2648         set_bit(STATUS_READY, &priv->status);
2649         wake_up_interruptible(&priv->wait_command_queue);
2650
2651         /* reassociate for ADHOC mode */
2652         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2653                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2654                                                                 priv->vif);
2655                 if (beacon)
2656                         iwl_mac_beacon_update(priv->hw, beacon);
2657         }
2658
2659         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2660                 iwl_set_mode(priv, priv->iw_mode);
2661
2662         return;
2663
2664  restart:
2665         queue_work(priv->workqueue, &priv->restart);
2666 }
2667
2668 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2669
2670 static void __iwl3945_down(struct iwl_priv *priv)
2671 {
2672         unsigned long flags;
2673         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2674         struct ieee80211_conf *conf = NULL;
2675
2676         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2677
2678         conf = ieee80211_get_hw_conf(priv->hw);
2679
2680         if (!exit_pending)
2681                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2682
2683         iwl3945_led_unregister(priv);
2684         priv->cfg->ops->smgmt->clear_station_table(priv);
2685
2686         /* Unblock any waiting calls */
2687         wake_up_interruptible_all(&priv->wait_command_queue);
2688
2689         /* Wipe out the EXIT_PENDING status bit if we are not actually
2690          * exiting the module */
2691         if (!exit_pending)
2692                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2693
2694         /* stop and reset the on-board processor */
2695         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2696
2697         /* tell the device to stop sending interrupts */
2698         spin_lock_irqsave(&priv->lock, flags);
2699         iwl_disable_interrupts(priv);
2700         spin_unlock_irqrestore(&priv->lock, flags);
2701         iwl_synchronize_irq(priv);
2702
2703         if (priv->mac80211_registered)
2704                 ieee80211_stop_queues(priv->hw);
2705
2706         /* If we have not previously called iwl3945_init() then
2707          * clear all bits but the RF Kill bits and return */
2708         if (!iwl_is_init(priv)) {
2709                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2710                                         STATUS_RF_KILL_HW |
2711                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2712                                         STATUS_RF_KILL_SW |
2713                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2714                                         STATUS_GEO_CONFIGURED |
2715                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2716                                         STATUS_EXIT_PENDING;
2717                 goto exit;
2718         }
2719
2720         /* ...otherwise clear out all the status bits but the RF Kill
2721          * bits and continue taking the NIC down. */
2722         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2723                                 STATUS_RF_KILL_HW |
2724                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2725                                 STATUS_RF_KILL_SW |
2726                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2727                                 STATUS_GEO_CONFIGURED |
2728                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2729                                 STATUS_FW_ERROR |
2730                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2731                                 STATUS_EXIT_PENDING;
2732
2733         priv->cfg->ops->lib->apm_ops.reset(priv);
2734         spin_lock_irqsave(&priv->lock, flags);
2735         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2736         spin_unlock_irqrestore(&priv->lock, flags);
2737
2738         iwl3945_hw_txq_ctx_stop(priv);
2739         iwl3945_hw_rxq_stop(priv);
2740
2741         iwl_write_prph(priv, APMG_CLK_DIS_REG,
2742                                 APMG_CLK_VAL_DMA_CLK_RQT);
2743
2744         udelay(5);
2745
2746         if (exit_pending)
2747                 priv->cfg->ops->lib->apm_ops.stop(priv);
2748         else
2749                 priv->cfg->ops->lib->apm_ops.reset(priv);
2750
2751  exit:
2752         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2753
2754         if (priv->ibss_beacon)
2755                 dev_kfree_skb(priv->ibss_beacon);
2756         priv->ibss_beacon = NULL;
2757
2758         /* clear out any free frames */
2759         iwl3945_clear_free_frames(priv);
2760 }
2761
2762 static void iwl3945_down(struct iwl_priv *priv)
2763 {
2764         mutex_lock(&priv->mutex);
2765         __iwl3945_down(priv);
2766         mutex_unlock(&priv->mutex);
2767
2768         iwl3945_cancel_deferred_work(priv);
2769 }
2770
2771 #define MAX_HW_RESTARTS 5
2772
2773 static int __iwl3945_up(struct iwl_priv *priv)
2774 {
2775         int rc, i;
2776
2777         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2778                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2779                 return -EIO;
2780         }
2781
2782         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
2783                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
2784                             "parameter)\n");
2785                 return -ENODEV;
2786         }
2787
2788         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2789                 IWL_ERR(priv, "ucode not available for device bring up\n");
2790                 return -EIO;
2791         }
2792
2793         /* If platform's RF_KILL switch is NOT set to KILL */
2794         if (iwl_read32(priv, CSR_GP_CNTRL) &
2795                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2796                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2797         else {
2798                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2799                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2800                 return -ENODEV;
2801         }
2802
2803         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2804
2805         rc = iwl3945_hw_nic_init(priv);
2806         if (rc) {
2807                 IWL_ERR(priv, "Unable to int nic\n");
2808                 return rc;
2809         }
2810
2811         /* make sure rfkill handshake bits are cleared */
2812         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2813         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2814                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2815
2816         /* clear (again), then enable host interrupts */
2817         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2818         iwl_enable_interrupts(priv);
2819
2820         /* really make sure rfkill handshake bits are cleared */
2821         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2822         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2823
2824         /* Copy original ucode data image from disk into backup cache.
2825          * This will be used to initialize the on-board processor's
2826          * data SRAM for a clean start when the runtime program first loads. */
2827         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2828                priv->ucode_data.len);
2829
2830         /* We return success when we resume from suspend and rf_kill is on. */
2831         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2832                 return 0;
2833
2834         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2835
2836                 priv->cfg->ops->smgmt->clear_station_table(priv);
2837
2838                 /* load bootstrap state machine,
2839                  * load bootstrap program into processor's memory,
2840                  * prepare to load the "initialize" uCode */
2841                 priv->cfg->ops->lib->load_ucode(priv);
2842
2843                 if (rc) {
2844                         IWL_ERR(priv,
2845                                 "Unable to set up bootstrap uCode: %d\n", rc);
2846                         continue;
2847                 }
2848
2849                 /* start card; "initialize" will load runtime ucode */
2850                 iwl3945_nic_start(priv);
2851
2852                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2853
2854                 return 0;
2855         }
2856
2857         set_bit(STATUS_EXIT_PENDING, &priv->status);
2858         __iwl3945_down(priv);
2859         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2860
2861         /* tried to restart and config the device for as long as our
2862          * patience could withstand */
2863         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2864         return -EIO;
2865 }
2866
2867
2868 /*****************************************************************************
2869  *
2870  * Workqueue callbacks
2871  *
2872  *****************************************************************************/
2873
2874 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2875 {
2876         struct iwl_priv *priv =
2877             container_of(data, struct iwl_priv, init_alive_start.work);
2878
2879         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2880                 return;
2881
2882         mutex_lock(&priv->mutex);
2883         iwl3945_init_alive_start(priv);
2884         mutex_unlock(&priv->mutex);
2885 }
2886
2887 static void iwl3945_bg_alive_start(struct work_struct *data)
2888 {
2889         struct iwl_priv *priv =
2890             container_of(data, struct iwl_priv, alive_start.work);
2891
2892         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2893                 return;
2894
2895         mutex_lock(&priv->mutex);
2896         iwl3945_alive_start(priv);
2897         mutex_unlock(&priv->mutex);
2898 }
2899
2900 static void iwl3945_rfkill_poll(struct work_struct *data)
2901 {
2902         struct iwl_priv *priv =
2903             container_of(data, struct iwl_priv, rfkill_poll.work);
2904         unsigned long status = priv->status;
2905
2906         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2907                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2908         else
2909                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2910
2911         if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
2912                 queue_work(priv->workqueue, &priv->rf_kill);
2913
2914         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2915                            round_jiffies_relative(2 * HZ));
2916
2917 }
2918
2919 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2920 static void iwl3945_bg_request_scan(struct work_struct *data)
2921 {
2922         struct iwl_priv *priv =
2923             container_of(data, struct iwl_priv, request_scan);
2924         struct iwl_host_cmd cmd = {
2925                 .id = REPLY_SCAN_CMD,
2926                 .len = sizeof(struct iwl3945_scan_cmd),
2927                 .meta.flags = CMD_SIZE_HUGE,
2928         };
2929         int rc = 0;
2930         struct iwl3945_scan_cmd *scan;
2931         struct ieee80211_conf *conf = NULL;
2932         u8 n_probes = 0;
2933         enum ieee80211_band band;
2934         bool is_active = false;
2935
2936         conf = ieee80211_get_hw_conf(priv->hw);
2937
2938         mutex_lock(&priv->mutex);
2939
2940         if (!iwl_is_ready(priv)) {
2941                 IWL_WARN(priv, "request scan called when driver not ready.\n");
2942                 goto done;
2943         }
2944
2945         /* Make sure the scan wasn't canceled before this queued work
2946          * was given the chance to run... */
2947         if (!test_bit(STATUS_SCANNING, &priv->status))
2948                 goto done;
2949
2950         /* This should never be called or scheduled if there is currently
2951          * a scan active in the hardware. */
2952         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2953                 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
2954                                 "Ignoring second request.\n");
2955                 rc = -EIO;
2956                 goto done;
2957         }
2958
2959         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2960                 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2961                 goto done;
2962         }
2963
2964         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2965                 IWL_DEBUG_HC(priv,
2966                         "Scan request while abort pending. Queuing.\n");
2967                 goto done;
2968         }
2969
2970         if (iwl_is_rfkill(priv)) {
2971                 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2972                 goto done;
2973         }
2974
2975         if (!test_bit(STATUS_READY, &priv->status)) {
2976                 IWL_DEBUG_HC(priv,
2977                         "Scan request while uninitialized. Queuing.\n");
2978                 goto done;
2979         }
2980
2981         if (!priv->scan_bands) {
2982                 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2983                 goto done;
2984         }
2985
2986         if (!priv->scan) {
2987                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2988                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2989                 if (!priv->scan) {
2990                         rc = -ENOMEM;
2991                         goto done;
2992                 }
2993         }
2994         scan = priv->scan;
2995         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2996
2997         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2998         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2999
3000         if (iwl_is_associated(priv)) {
3001                 u16 interval = 0;
3002                 u32 extra;
3003                 u32 suspend_time = 100;
3004                 u32 scan_suspend_time = 100;
3005                 unsigned long flags;
3006
3007                 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3008
3009                 spin_lock_irqsave(&priv->lock, flags);
3010                 interval = priv->beacon_int;
3011                 spin_unlock_irqrestore(&priv->lock, flags);
3012
3013                 scan->suspend_time = 0;
3014                 scan->max_out_time = cpu_to_le32(200 * 1024);
3015                 if (!interval)
3016                         interval = suspend_time;
3017                 /*
3018                  * suspend time format:
3019                  *  0-19: beacon interval in usec (time before exec.)
3020                  * 20-23: 0
3021                  * 24-31: number of beacons (suspend between channels)
3022                  */
3023
3024                 extra = (suspend_time / interval) << 24;
3025                 scan_suspend_time = 0xFF0FFFFF &
3026                     (extra | ((suspend_time % interval) * 1024));
3027
3028                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3029                 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3030                                scan_suspend_time, interval);
3031         }
3032
3033         if (priv->scan_request->n_ssids) {
3034                 int i, p = 0;
3035                 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
3036                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
3037                         /* always does wildcard anyway */
3038                         if (!priv->scan_request->ssids[i].ssid_len)
3039                                 continue;
3040                         scan->direct_scan[p].id = WLAN_EID_SSID;
3041                         scan->direct_scan[p].len =
3042                                 priv->scan_request->ssids[i].ssid_len;
3043                         memcpy(scan->direct_scan[p].ssid,
3044                                priv->scan_request->ssids[i].ssid,
3045                                priv->scan_request->ssids[i].ssid_len);
3046                         n_probes++;
3047                         p++;
3048                 }
3049                 is_active = true;
3050         } else
3051                 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
3052
3053         /* We don't build a direct scan probe request; the uCode will do
3054          * that based on the direct_mask added to each channel entry */
3055         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3056         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3057         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3058
3059         /* flags + rate selection */
3060
3061         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3062                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3063                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3064                 scan->good_CRC_th = 0;
3065                 band = IEEE80211_BAND_2GHZ;
3066         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3067                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3068                 /*
3069                  * If active scaning is requested but a certain channel
3070                  * is marked passive, we can do active scanning if we
3071                  * detect transmissions.
3072                  */
3073                 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
3074                 band = IEEE80211_BAND_5GHZ;
3075         } else {
3076                 IWL_WARN(priv, "Invalid scan band count\n");
3077                 goto done;
3078         }
3079
3080         scan->tx_cmd.len = cpu_to_le16(
3081                         iwl_fill_probe_req(priv,
3082                                 (struct ieee80211_mgmt *)scan->data,
3083                                 priv->scan_request->ie,
3084                                 priv->scan_request->ie_len,
3085                                 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3086
3087         /* select Rx antennas */
3088         scan->flags |= iwl3945_get_antenna_flags(priv);
3089
3090         if (iwl_is_monitor_mode(priv))
3091                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3092
3093         scan->channel_count =
3094                 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
3095                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3096
3097         if (scan->channel_count == 0) {
3098                 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3099                 goto done;
3100         }
3101
3102         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3103             scan->channel_count * sizeof(struct iwl3945_scan_channel);
3104         cmd.data = scan;
3105         scan->len = cpu_to_le16(cmd.len);
3106
3107         set_bit(STATUS_SCAN_HW, &priv->status);
3108         rc = iwl_send_cmd_sync(priv, &cmd);
3109         if (rc)
3110                 goto done;
3111
3112         queue_delayed_work(priv->workqueue, &priv->scan_check,
3113                            IWL_SCAN_CHECK_WATCHDOG);
3114
3115         mutex_unlock(&priv->mutex);
3116         return;
3117
3118  done:
3119         /* can not perform scan make sure we clear scanning
3120          * bits from status so next scan request can be performed.
3121          * if we dont clear scanning status bit here all next scan
3122          * will fail
3123         */
3124         clear_bit(STATUS_SCAN_HW, &priv->status);
3125         clear_bit(STATUS_SCANNING, &priv->status);
3126
3127         /* inform mac80211 scan aborted */
3128         queue_work(priv->workqueue, &priv->scan_completed);
3129         mutex_unlock(&priv->mutex);
3130 }
3131
3132 static void iwl3945_bg_up(struct work_struct *data)
3133 {
3134         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3135
3136         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3137                 return;
3138
3139         mutex_lock(&priv->mutex);
3140         __iwl3945_up(priv);
3141         mutex_unlock(&priv->mutex);
3142         iwl_rfkill_set_hw_state(priv);
3143 }
3144
3145 static void iwl3945_bg_restart(struct work_struct *data)
3146 {
3147         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3148
3149         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3150                 return;
3151
3152         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3153                 mutex_lock(&priv->mutex);
3154                 priv->vif = NULL;
3155                 priv->is_open = 0;
3156                 mutex_unlock(&priv->mutex);
3157                 iwl3945_down(priv);
3158                 ieee80211_restart_hw(priv->hw);
3159         } else {
3160                 iwl3945_down(priv);
3161                 queue_work(priv->workqueue, &priv->up);
3162         }
3163 }
3164
3165 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3166 {
3167         struct iwl_priv *priv =
3168             container_of(data, struct iwl_priv, rx_replenish);
3169
3170         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3171                 return;
3172
3173         mutex_lock(&priv->mutex);
3174         iwl3945_rx_replenish(priv);
3175         mutex_unlock(&priv->mutex);
3176 }
3177
3178 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3179
3180 void iwl3945_post_associate(struct iwl_priv *priv)
3181 {
3182         int rc = 0;
3183         struct ieee80211_conf *conf = NULL;
3184
3185         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3186                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3187                 return;
3188         }
3189
3190
3191         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3192                         priv->assoc_id, priv->active_rxon.bssid_addr);
3193
3194         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3195                 return;
3196
3197         if (!priv->vif || !priv->is_open)
3198                 return;
3199
3200         iwl_scan_cancel_timeout(priv, 200);
3201
3202         conf = ieee80211_get_hw_conf(priv->hw);
3203
3204         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3205         iwlcore_commit_rxon(priv);
3206
3207         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3208         iwl3945_setup_rxon_timing(priv);
3209         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3210                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3211         if (rc)
3212                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3213                             "Attempting to continue.\n");
3214
3215         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3216
3217         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3218
3219         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3220                         priv->assoc_id, priv->beacon_int);
3221
3222         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3223                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3224         else
3225                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3226
3227         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3228                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3229                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3230                 else
3231                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3232
3233                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3234                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3235
3236         }
3237
3238         iwlcore_commit_rxon(priv);
3239
3240         switch (priv->iw_mode) {
3241         case NL80211_IFTYPE_STATION:
3242                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3243                 break;
3244
3245         case NL80211_IFTYPE_ADHOC:
3246
3247                 priv->assoc_id = 1;
3248                 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 0, 0, NULL);
3249                 iwl3945_sync_sta(priv, IWL_STA_ID,
3250                                  (priv->band == IEEE80211_BAND_5GHZ) ?
3251                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3252                                  CMD_ASYNC);
3253                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3254                 iwl3945_send_beacon_cmd(priv);
3255
3256                 break;
3257
3258         default:
3259                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
3260                            __func__, priv->iw_mode);
3261                 break;
3262         }
3263
3264         iwl_activate_qos(priv, 0);
3265
3266         /* we have just associated, don't start scan too early */
3267         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3268 }
3269
3270 /*****************************************************************************
3271  *
3272  * mac80211 entry point functions
3273  *
3274  *****************************************************************************/
3275
3276 #define UCODE_READY_TIMEOUT     (2 * HZ)
3277
3278 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3279 {
3280         struct iwl_priv *priv = hw->priv;
3281         int ret;
3282
3283         IWL_DEBUG_MAC80211(priv, "enter\n");
3284
3285         /* we should be verifying the device is ready to be opened */
3286         mutex_lock(&priv->mutex);
3287
3288         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3289         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3290          * ucode filename and max sizes are card-specific. */
3291
3292         if (!priv->ucode_code.len) {
3293                 ret = iwl3945_read_ucode(priv);
3294                 if (ret) {
3295                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3296                         mutex_unlock(&priv->mutex);
3297                         goto out_release_irq;
3298                 }
3299         }
3300
3301         ret = __iwl3945_up(priv);
3302
3303         mutex_unlock(&priv->mutex);
3304
3305         iwl_rfkill_set_hw_state(priv);
3306
3307         if (ret)
3308                 goto out_release_irq;
3309
3310         IWL_DEBUG_INFO(priv, "Start UP work.\n");
3311
3312         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3313          * mac80211 will not be run successfully. */
3314         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3315                         test_bit(STATUS_READY, &priv->status),
3316                         UCODE_READY_TIMEOUT);
3317         if (!ret) {
3318                 if (!test_bit(STATUS_READY, &priv->status)) {
3319                         IWL_ERR(priv,
3320                                 "Wait for START_ALIVE timeout after %dms.\n",
3321                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3322                         ret = -ETIMEDOUT;
3323                         goto out_release_irq;
3324                 }
3325         }
3326
3327         /* ucode is running and will send rfkill notifications,
3328          * no need to poll the killswitch state anymore */
3329         cancel_delayed_work(&priv->rfkill_poll);
3330
3331         priv->is_open = 1;
3332         IWL_DEBUG_MAC80211(priv, "leave\n");
3333         return 0;
3334
3335 out_release_irq:
3336         priv->is_open = 0;
3337         IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3338         return ret;
3339 }
3340
3341 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3342 {
3343         struct iwl_priv *priv = hw->priv;
3344
3345         IWL_DEBUG_MAC80211(priv, "enter\n");
3346
3347         if (!priv->is_open) {
3348                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3349                 return;
3350         }
3351
3352         priv->is_open = 0;
3353
3354         if (iwl_is_ready_rf(priv)) {
3355                 /* stop mac, cancel any scan request and clear
3356                  * RXON_FILTER_ASSOC_MSK BIT
3357                  */
3358                 mutex_lock(&priv->mutex);
3359                 iwl_scan_cancel_timeout(priv, 100);
3360                 mutex_unlock(&priv->mutex);
3361         }
3362
3363         iwl3945_down(priv);
3364
3365         flush_workqueue(priv->workqueue);
3366
3367         /* start polling the killswitch state again */
3368         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3369                            round_jiffies_relative(2 * HZ));
3370
3371         IWL_DEBUG_MAC80211(priv, "leave\n");
3372 }
3373
3374 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3375 {
3376         struct iwl_priv *priv = hw->priv;
3377
3378         IWL_DEBUG_MAC80211(priv, "enter\n");
3379
3380         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3381                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3382
3383         if (iwl3945_tx_skb(priv, skb))
3384                 dev_kfree_skb_any(skb);
3385
3386         IWL_DEBUG_MAC80211(priv, "leave\n");
3387         return NETDEV_TX_OK;
3388 }
3389
3390 void iwl3945_config_ap(struct iwl_priv *priv)
3391 {
3392         int rc = 0;
3393
3394         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3395                 return;
3396
3397         /* The following should be done only at AP bring up */
3398         if (!(iwl_is_associated(priv))) {
3399
3400                 /* RXON - unassoc (to set timing command) */
3401                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3402                 iwlcore_commit_rxon(priv);
3403
3404                 /* RXON Timing */
3405                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3406                 iwl3945_setup_rxon_timing(priv);
3407                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3408                                       sizeof(priv->rxon_timing),
3409                                       &priv->rxon_timing);
3410                 if (rc)
3411                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3412                                         "Attempting to continue.\n");
3413
3414                 /* FIXME: what should be the assoc_id for AP? */
3415                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3416                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3417                         priv->staging_rxon.flags |=
3418                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3419                 else
3420                         priv->staging_rxon.flags &=
3421                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3422
3423                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3424                         if (priv->assoc_capability &
3425                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3426                                 priv->staging_rxon.flags |=
3427                                         RXON_FLG_SHORT_SLOT_MSK;
3428                         else
3429                                 priv->staging_rxon.flags &=
3430                                         ~RXON_FLG_SHORT_SLOT_MSK;
3431
3432                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3433                                 priv->staging_rxon.flags &=
3434                                         ~RXON_FLG_SHORT_SLOT_MSK;
3435                 }
3436                 /* restore RXON assoc */
3437                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3438                 iwlcore_commit_rxon(priv);
3439                 priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL);
3440         }
3441         iwl3945_send_beacon_cmd(priv);
3442
3443         /* FIXME - we need to add code here to detect a totally new
3444          * configuration, reset the AP, unassoc, rxon timing, assoc,
3445          * clear sta table, add BCAST sta... */
3446 }
3447
3448 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3449                                struct ieee80211_vif *vif,
3450                                struct ieee80211_sta *sta,
3451                                struct ieee80211_key_conf *key)
3452 {
3453         struct iwl_priv *priv = hw->priv;
3454         const u8 *addr;
3455         int ret = 0;
3456         u8 sta_id = IWL_INVALID_STATION;
3457         u8 static_key;
3458
3459         IWL_DEBUG_MAC80211(priv, "enter\n");
3460
3461         if (iwl3945_mod_params.sw_crypto) {
3462                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3463                 return -EOPNOTSUPP;
3464         }
3465
3466         addr = sta ? sta->addr : iwl_bcast_addr;
3467         static_key = !iwl_is_associated(priv);
3468
3469         if (!static_key) {
3470                 sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
3471                 if (sta_id == IWL_INVALID_STATION) {
3472                         IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3473                                             addr);
3474                         return -EINVAL;
3475                 }
3476         }
3477
3478         mutex_lock(&priv->mutex);
3479         iwl_scan_cancel_timeout(priv, 100);
3480         mutex_unlock(&priv->mutex);
3481
3482         switch (cmd) {
3483         case SET_KEY:
3484                 if (static_key)
3485                         ret = iwl3945_set_static_key(priv, key);
3486                 else
3487                         ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3488                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3489                 break;
3490         case DISABLE_KEY:
3491                 if (static_key)
3492                         ret = iwl3945_remove_static_key(priv);
3493                 else
3494                         ret = iwl3945_clear_sta_key_info(priv, sta_id);
3495                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3496                 break;
3497         default:
3498                 ret = -EINVAL;
3499         }
3500
3501         IWL_DEBUG_MAC80211(priv, "leave\n");
3502
3503         return ret;
3504 }
3505
3506 /*****************************************************************************
3507  *
3508  * sysfs attributes
3509  *
3510  *****************************************************************************/
3511
3512 #ifdef CONFIG_IWLWIFI_DEBUG
3513
3514 /*
3515  * The following adds a new attribute to the sysfs representation
3516  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3517  * used for controlling the debug level.
3518  *
3519  * See the level definitions in iwl for details.
3520  */
3521 static ssize_t show_debug_level(struct device *d,
3522                                 struct device_attribute *attr, char *buf)
3523 {
3524         struct iwl_priv *priv = dev_get_drvdata(d);
3525
3526         return sprintf(buf, "0x%08X\n", priv->debug_level);
3527 }
3528 static ssize_t store_debug_level(struct device *d,
3529                                 struct device_attribute *attr,
3530                                  const char *buf, size_t count)
3531 {
3532         struct iwl_priv *priv = dev_get_drvdata(d);
3533         unsigned long val;
3534         int ret;
3535
3536         ret = strict_strtoul(buf, 0, &val);
3537         if (ret)
3538                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3539         else
3540                 priv->debug_level = val;
3541
3542         return strnlen(buf, count);
3543 }
3544
3545 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3546                         show_debug_level, store_debug_level);
3547
3548 #endif /* CONFIG_IWLWIFI_DEBUG */
3549
3550 static ssize_t show_temperature(struct device *d,
3551                                 struct device_attribute *attr, char *buf)
3552 {
3553         struct iwl_priv *priv = dev_get_drvdata(d);
3554
3555         if (!iwl_is_alive(priv))
3556                 return -EAGAIN;
3557
3558         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3559 }
3560
3561 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3562
3563 static ssize_t show_tx_power(struct device *d,
3564                              struct device_attribute *attr, char *buf)
3565 {
3566         struct iwl_priv *priv = dev_get_drvdata(d);
3567         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3568 }
3569
3570 static ssize_t store_tx_power(struct device *d,
3571                               struct device_attribute *attr,
3572                               const char *buf, size_t count)
3573 {
3574         struct iwl_priv *priv = dev_get_drvdata(d);
3575         char *p = (char *)buf;
3576         u32 val;
3577
3578         val = simple_strtoul(p, &p, 10);
3579         if (p == buf)
3580                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3581         else
3582                 iwl3945_hw_reg_set_txpower(priv, val);
3583
3584         return count;
3585 }
3586
3587 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3588
3589 static ssize_t show_flags(struct device *d,
3590                           struct device_attribute *attr, char *buf)
3591 {
3592         struct iwl_priv *priv = dev_get_drvdata(d);
3593
3594         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3595 }
3596
3597 static ssize_t store_flags(struct device *d,
3598                            struct device_attribute *attr,
3599                            const char *buf, size_t count)
3600 {
3601         struct iwl_priv *priv = dev_get_drvdata(d);
3602         u32 flags = simple_strtoul(buf, NULL, 0);
3603
3604         mutex_lock(&priv->mutex);
3605         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3606                 /* Cancel any currently running scans... */
3607                 if (iwl_scan_cancel_timeout(priv, 100))
3608                         IWL_WARN(priv, "Could not cancel scan.\n");
3609                 else {
3610                         IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3611                                        flags);
3612                         priv->staging_rxon.flags = cpu_to_le32(flags);
3613                         iwlcore_commit_rxon(priv);
3614                 }
3615         }
3616         mutex_unlock(&priv->mutex);
3617
3618         return count;
3619 }
3620
3621 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3622
3623 static ssize_t show_filter_flags(struct device *d,
3624                                  struct device_attribute *attr, char *buf)
3625 {
3626         struct iwl_priv *priv = dev_get_drvdata(d);
3627
3628         return sprintf(buf, "0x%04X\n",
3629                 le32_to_cpu(priv->active_rxon.filter_flags));
3630 }
3631
3632 static ssize_t store_filter_flags(struct device *d,
3633                                   struct device_attribute *attr,
3634                                   const char *buf, size_t count)
3635 {
3636         struct iwl_priv *priv = dev_get_drvdata(d);
3637         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3638
3639         mutex_lock(&priv->mutex);
3640         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3641                 /* Cancel any currently running scans... */
3642                 if (iwl_scan_cancel_timeout(priv, 100))
3643                         IWL_WARN(priv, "Could not cancel scan.\n");
3644                 else {
3645                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3646                                        "0x%04X\n", filter_flags);
3647                         priv->staging_rxon.filter_flags =
3648                                 cpu_to_le32(filter_flags);
3649                         iwlcore_commit_rxon(priv);
3650                 }
3651         }
3652         mutex_unlock(&priv->mutex);
3653
3654         return count;
3655 }
3656
3657 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3658                    store_filter_flags);
3659
3660 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3661
3662 static ssize_t show_measurement(struct device *d,
3663                                 struct device_attribute *attr, char *buf)
3664 {
3665         struct iwl_priv *priv = dev_get_drvdata(d);
3666         struct iwl_spectrum_notification measure_report;
3667         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3668         u8 *data = (u8 *)&measure_report;
3669         unsigned long flags;
3670
3671         spin_lock_irqsave(&priv->lock, flags);
3672         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3673                 spin_unlock_irqrestore(&priv->lock, flags);
3674                 return 0;
3675         }
3676         memcpy(&measure_report, &priv->measure_report, size);
3677         priv->measurement_status = 0;
3678         spin_unlock_irqrestore(&priv->lock, flags);
3679
3680         while (size && (PAGE_SIZE - len)) {
3681                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3682                                    PAGE_SIZE - len, 1);
3683                 len = strlen(buf);
3684                 if (PAGE_SIZE - len)
3685                         buf[len++] = '\n';
3686
3687                 ofs += 16;
3688                 size -= min(size, 16U);
3689         }
3690
3691         return len;
3692 }
3693
3694 static ssize_t store_measurement(struct device *d,
3695                                  struct device_attribute *attr,
3696                                  const char *buf, size_t count)
3697 {
3698         struct iwl_priv *priv = dev_get_drvdata(d);
3699         struct ieee80211_measurement_params params = {
3700                 .channel = le16_to_cpu(priv->active_rxon.channel),
3701                 .start_time = cpu_to_le64(priv->last_tsf),
3702                 .duration = cpu_to_le16(1),
3703         };
3704         u8 type = IWL_MEASURE_BASIC;
3705         u8 buffer[32];
3706         u8 channel;
3707
3708         if (count) {
3709                 char *p = buffer;
3710                 strncpy(buffer, buf, min(sizeof(buffer), count));
3711                 channel = simple_strtoul(p, NULL, 0);
3712                 if (channel)
3713                         params.channel = channel;
3714
3715                 p = buffer;
3716                 while (*p && *p != ' ')
3717                         p++;
3718                 if (*p)
3719                         type = simple_strtoul(p + 1, NULL, 0);
3720         }
3721
3722         IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3723                        "channel %d (for '%s')\n", type, params.channel, buf);
3724         iwl3945_get_measurement(priv, &params, type);
3725
3726         return count;
3727 }
3728
3729 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3730                    show_measurement, store_measurement);
3731 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3732
3733 static ssize_t store_retry_rate(struct device *d,
3734                                 struct device_attribute *attr,
3735                                 const char *buf, size_t count)
3736 {
3737         struct iwl_priv *priv = dev_get_drvdata(d);
3738
3739         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3740         if (priv->retry_rate <= 0)
3741                 priv->retry_rate = 1;
3742
3743         return count;
3744 }
3745
3746 static ssize_t show_retry_rate(struct device *d,
3747                                struct device_attribute *attr, char *buf)
3748 {
3749         struct iwl_priv *priv = dev_get_drvdata(d);
3750         return sprintf(buf, "%d", priv->retry_rate);
3751 }
3752
3753 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3754                    store_retry_rate);
3755
3756
3757 static ssize_t store_power_level(struct device *d,
3758                                  struct device_attribute *attr,
3759                                  const char *buf, size_t count)
3760 {
3761         struct iwl_priv *priv = dev_get_drvdata(d);
3762         int ret;
3763         unsigned long mode;
3764
3765
3766         mutex_lock(&priv->mutex);
3767
3768         ret = strict_strtoul(buf, 10, &mode);
3769         if (ret)
3770                 goto out;
3771
3772         ret = iwl_power_set_user_mode(priv, mode);
3773         if (ret) {
3774                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3775                 goto out;
3776         }
3777         ret = count;
3778
3779  out:
3780         mutex_unlock(&priv->mutex);
3781         return ret;
3782 }
3783
3784 static ssize_t show_power_level(struct device *d,
3785                                 struct device_attribute *attr, char *buf)
3786 {
3787         struct iwl_priv *priv = dev_get_drvdata(d);
3788         int mode = priv->power_data.user_power_setting;
3789         int level = priv->power_data.power_mode;
3790         char *p = buf;
3791
3792         p += sprintf(p, "INDEX:%d\t", level);
3793         p += sprintf(p, "USER:%d\n", mode);
3794         return p - buf + 1;
3795 }
3796
3797 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
3798                    show_power_level, store_power_level);
3799
3800 #define MAX_WX_STRING 80
3801
3802 /* Values are in microsecond */
3803 static const s32 timeout_duration[] = {
3804         350000,
3805         250000,
3806         75000,
3807         37000,
3808         25000,
3809 };
3810 static const s32 period_duration[] = {
3811         400000,
3812         700000,
3813         1000000,
3814         1000000,
3815         1000000
3816 };
3817
3818 static ssize_t show_channels(struct device *d,
3819                              struct device_attribute *attr, char *buf)
3820 {
3821         /* all this shit doesn't belong into sysfs anyway */
3822         return 0;
3823 }
3824
3825 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3826
3827 static ssize_t show_statistics(struct device *d,
3828                                struct device_attribute *attr, char *buf)
3829 {
3830         struct iwl_priv *priv = dev_get_drvdata(d);
3831         u32 size = sizeof(struct iwl3945_notif_statistics);
3832         u32 len = 0, ofs = 0;
3833         u8 *data = (u8 *)&priv->statistics_39;
3834         int rc = 0;
3835
3836         if (!iwl_is_alive(priv))
3837                 return -EAGAIN;
3838
3839         mutex_lock(&priv->mutex);
3840         rc = iwl_send_statistics_request(priv, 0);
3841         mutex_unlock(&priv->mutex);
3842
3843         if (rc) {
3844                 len = sprintf(buf,
3845                               "Error sending statistics request: 0x%08X\n", rc);
3846                 return len;
3847         }
3848
3849         while (size && (PAGE_SIZE - len)) {
3850                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3851                                    PAGE_SIZE - len, 1);
3852                 len = strlen(buf);
3853                 if (PAGE_SIZE - len)
3854                         buf[len++] = '\n';
3855
3856                 ofs += 16;
3857                 size -= min(size, 16U);
3858         }
3859
3860         return len;
3861 }
3862
3863 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3864
3865 static ssize_t show_antenna(struct device *d,
3866                             struct device_attribute *attr, char *buf)
3867 {
3868         struct iwl_priv *priv = dev_get_drvdata(d);
3869
3870         if (!iwl_is_alive(priv))
3871                 return -EAGAIN;
3872
3873         return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3874 }
3875
3876 static ssize_t store_antenna(struct device *d,
3877                              struct device_attribute *attr,
3878                              const char *buf, size_t count)
3879 {
3880         struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3881         int ant;
3882
3883         if (count == 0)
3884                 return 0;
3885
3886         if (sscanf(buf, "%1i", &ant) != 1) {
3887                 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3888                 return count;
3889         }
3890
3891         if ((ant >= 0) && (ant <= 2)) {
3892                 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3893                 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3894         } else
3895                 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3896
3897
3898         return count;
3899 }
3900
3901 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3902
3903 static ssize_t show_status(struct device *d,
3904                            struct device_attribute *attr, char *buf)
3905 {
3906         struct iwl_priv *priv = dev_get_drvdata(d);
3907         if (!iwl_is_alive(priv))
3908                 return -EAGAIN;
3909         return sprintf(buf, "0x%08x\n", (int)priv->status);
3910 }
3911
3912 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3913
3914 static ssize_t dump_error_log(struct device *d,
3915                               struct device_attribute *attr,
3916                               const char *buf, size_t count)
3917 {
3918         struct iwl_priv *priv = dev_get_drvdata(d);
3919         char *p = (char *)buf;
3920
3921         if (p[0] == '1')
3922                 iwl3945_dump_nic_error_log(priv);
3923
3924         return strnlen(buf, count);
3925 }
3926
3927 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3928
3929 static ssize_t dump_event_log(struct device *d,
3930                               struct device_attribute *attr,
3931                               const char *buf, size_t count)
3932 {
3933         struct iwl_priv *priv = dev_get_drvdata(d);
3934         char *p = (char *)buf;
3935
3936         if (p[0] == '1')
3937                 iwl3945_dump_nic_event_log(priv);
3938
3939         return strnlen(buf, count);
3940 }
3941
3942 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
3943
3944 /*****************************************************************************
3945  *
3946  * driver setup and tear down
3947  *
3948  *****************************************************************************/
3949
3950 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3951 {
3952         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3953
3954         init_waitqueue_head(&priv->wait_command_queue);
3955
3956         INIT_WORK(&priv->up, iwl3945_bg_up);
3957         INIT_WORK(&priv->restart, iwl3945_bg_restart);
3958         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3959         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3960         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3961         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3962         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3963         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3964         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3965         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3966         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3967         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3968
3969         iwl3945_hw_setup_deferred_work(priv);
3970
3971         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3972                      iwl3945_irq_tasklet, (unsigned long)priv);
3973 }
3974
3975 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3976 {
3977         iwl3945_hw_cancel_deferred_work(priv);
3978
3979         cancel_delayed_work_sync(&priv->init_alive_start);
3980         cancel_delayed_work(&priv->scan_check);
3981         cancel_delayed_work(&priv->alive_start);
3982         cancel_work_sync(&priv->beacon_update);
3983 }
3984
3985 static struct attribute *iwl3945_sysfs_entries[] = {
3986         &dev_attr_antenna.attr,
3987         &dev_attr_channels.attr,
3988         &dev_attr_dump_errors.attr,
3989         &dev_attr_dump_events.attr,
3990         &dev_attr_flags.attr,
3991         &dev_attr_filter_flags.attr,
3992 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3993         &dev_attr_measurement.attr,
3994 #endif
3995         &dev_attr_power_level.attr,
3996         &dev_attr_retry_rate.attr,
3997         &dev_attr_statistics.attr,
3998         &dev_attr_status.attr,
3999         &dev_attr_temperature.attr,
4000         &dev_attr_tx_power.attr,
4001 #ifdef CONFIG_IWLWIFI_DEBUG
4002         &dev_attr_debug_level.attr,
4003 #endif
4004         NULL
4005 };
4006
4007 static struct attribute_group iwl3945_attribute_group = {
4008         .name = NULL,           /* put in device directory */
4009         .attrs = iwl3945_sysfs_entries,
4010 };
4011
4012 static struct ieee80211_ops iwl3945_hw_ops = {
4013         .tx = iwl3945_mac_tx,
4014         .start = iwl3945_mac_start,
4015         .stop = iwl3945_mac_stop,
4016         .add_interface = iwl_mac_add_interface,
4017         .remove_interface = iwl_mac_remove_interface,
4018         .config = iwl_mac_config,
4019         .configure_filter = iwl_configure_filter,
4020         .set_key = iwl3945_mac_set_key,
4021         .get_tx_stats = iwl_mac_get_tx_stats,
4022         .conf_tx = iwl_mac_conf_tx,
4023         .reset_tsf = iwl_mac_reset_tsf,
4024         .bss_info_changed = iwl_bss_info_changed,
4025         .hw_scan = iwl_mac_hw_scan
4026 };
4027
4028 static int iwl3945_init_drv(struct iwl_priv *priv)
4029 {
4030         int ret;
4031         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4032
4033         priv->retry_rate = 1;
4034         priv->ibss_beacon = NULL;
4035
4036         spin_lock_init(&priv->lock);
4037         spin_lock_init(&priv->sta_lock);
4038         spin_lock_init(&priv->hcmd_lock);
4039
4040         INIT_LIST_HEAD(&priv->free_frames);
4041
4042         mutex_init(&priv->mutex);
4043
4044         /* Clear the driver's (not device's) station table */
4045         priv->cfg->ops->smgmt->clear_station_table(priv);
4046
4047         priv->data_retry_limit = -1;
4048         priv->ieee_channels = NULL;
4049         priv->ieee_rates = NULL;
4050         priv->band = IEEE80211_BAND_2GHZ;
4051
4052         priv->iw_mode = NL80211_IFTYPE_STATION;
4053
4054         iwl_reset_qos(priv);
4055
4056         priv->qos_data.qos_active = 0;
4057         priv->qos_data.qos_cap.val = 0;
4058
4059         priv->rates_mask = IWL_RATES_MASK;
4060         /* If power management is turned on, default to CAM mode */
4061         priv->power_mode = IWL_POWER_MODE_CAM;
4062         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4063
4064         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4065                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4066                          eeprom->version);
4067                 ret = -EINVAL;
4068                 goto err;
4069         }
4070         ret = iwl_init_channel_map(priv);
4071         if (ret) {
4072                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4073                 goto err;
4074         }
4075
4076         /* Set up txpower settings in driver for all channels */
4077         if (iwl3945_txpower_set_from_eeprom(priv)) {
4078                 ret = -EIO;
4079                 goto err_free_channel_map;
4080         }
4081
4082         ret = iwlcore_init_geos(priv);
4083         if (ret) {
4084                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4085                 goto err_free_channel_map;
4086         }
4087         iwl3945_init_hw_rates(priv, priv->ieee_rates);
4088
4089         return 0;
4090
4091 err_free_channel_map:
4092         iwl_free_channel_map(priv);
4093 err:
4094         return ret;
4095 }
4096
4097 static int iwl3945_setup_mac(struct iwl_priv *priv)
4098 {
4099         int ret;
4100         struct ieee80211_hw *hw = priv->hw;
4101
4102         hw->rate_control_algorithm = "iwl-3945-rs";
4103         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
4104
4105         /* Tell mac80211 our characteristics */
4106         hw->flags = IEEE80211_HW_SIGNAL_DBM |
4107                     IEEE80211_HW_NOISE_DBM |
4108                     IEEE80211_HW_SPECTRUM_MGMT;
4109
4110         hw->wiphy->interface_modes =
4111                 BIT(NL80211_IFTYPE_STATION) |
4112                 BIT(NL80211_IFTYPE_ADHOC);
4113
4114         hw->wiphy->custom_regulatory = true;
4115
4116         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
4117         /* we create the 802.11 header and a zero-length SSID element */
4118         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
4119
4120         /* Default value; 4 EDCA QOS priorities */
4121         hw->queues = 4;
4122
4123         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4124                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4125                         &priv->bands[IEEE80211_BAND_2GHZ];
4126
4127         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4128                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4129                         &priv->bands[IEEE80211_BAND_5GHZ];
4130
4131         ret = ieee80211_register_hw(priv->hw);
4132         if (ret) {
4133                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
4134                 return ret;
4135         }
4136         priv->mac80211_registered = 1;
4137
4138         return 0;
4139 }
4140
4141 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4142 {
4143         int err = 0;
4144         struct iwl_priv *priv;
4145         struct ieee80211_hw *hw;
4146         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4147         struct iwl3945_eeprom *eeprom;
4148         unsigned long flags;
4149
4150         /***********************
4151          * 1. Allocating HW data
4152          * ********************/
4153
4154         /* mac80211 allocates memory for this device instance, including
4155          *   space for this driver's private structure */
4156         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4157         if (hw == NULL) {
4158                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4159                 err = -ENOMEM;
4160                 goto out;
4161         }
4162         priv = hw->priv;
4163         SET_IEEE80211_DEV(hw, &pdev->dev);
4164
4165         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4166              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4167                 IWL_ERR(priv,
4168                         "invalid queues_num, should be between %d and %d\n",
4169                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4170                 err = -EINVAL;
4171                 goto out_ieee80211_free_hw;
4172         }
4173
4174         /*
4175          * Disabling hardware scan means that mac80211 will perform scans
4176          * "the hard way", rather than using device's scan.
4177          */
4178         if (iwl3945_mod_params.disable_hw_scan) {
4179                 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4180                 iwl3945_hw_ops.hw_scan = NULL;
4181         }
4182
4183
4184         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4185         priv->cfg = cfg;
4186         priv->pci_dev = pdev;
4187
4188 #ifdef CONFIG_IWLWIFI_DEBUG
4189         priv->debug_level = iwl3945_mod_params.debug;
4190         atomic_set(&priv->restrict_refcnt, 0);
4191 #endif
4192
4193         /***************************
4194          * 2. Initializing PCI bus
4195          * *************************/
4196         if (pci_enable_device(pdev)) {
4197                 err = -ENODEV;
4198                 goto out_ieee80211_free_hw;
4199         }
4200
4201         pci_set_master(pdev);
4202
4203         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4204         if (!err)
4205                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4206         if (err) {
4207                 IWL_WARN(priv, "No suitable DMA available.\n");
4208                 goto out_pci_disable_device;
4209         }
4210
4211         pci_set_drvdata(pdev, priv);
4212         err = pci_request_regions(pdev, DRV_NAME);
4213         if (err)
4214                 goto out_pci_disable_device;
4215
4216         /***********************
4217          * 3. Read REV Register
4218          * ********************/
4219         priv->hw_base = pci_iomap(pdev, 0, 0);
4220         if (!priv->hw_base) {
4221                 err = -ENODEV;
4222                 goto out_pci_release_regions;
4223         }
4224
4225         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4226                         (unsigned long long) pci_resource_len(pdev, 0));
4227         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4228
4229         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4230          * PCI Tx retries from interfering with C3 CPU state */
4231         pci_write_config_byte(pdev, 0x41, 0x00);
4232
4233         /* this spin lock will be used in apm_ops.init and EEPROM access
4234          * we should init now
4235          */
4236         spin_lock_init(&priv->reg_lock);
4237
4238         /* amp init */
4239         err = priv->cfg->ops->lib->apm_ops.init(priv);
4240         if (err < 0) {
4241                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
4242                 goto out_iounmap;
4243         }
4244
4245         /***********************
4246          * 4. Read EEPROM
4247          * ********************/
4248
4249         /* Read the EEPROM */
4250         err = iwl_eeprom_init(priv);
4251         if (err) {
4252                 IWL_ERR(priv, "Unable to init EEPROM\n");
4253                 goto out_iounmap;
4254         }
4255         /* MAC Address location in EEPROM same for 3945/4965 */
4256         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4257         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4258         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4259         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4260
4261         /***********************
4262          * 5. Setup HW Constants
4263          * ********************/
4264         /* Device-specific setup */
4265         if (iwl3945_hw_set_hw_params(priv)) {
4266                 IWL_ERR(priv, "failed to set hw settings\n");
4267                 goto out_eeprom_free;
4268         }
4269
4270         /***********************
4271          * 6. Setup priv
4272          * ********************/
4273
4274         err = iwl3945_init_drv(priv);
4275         if (err) {
4276                 IWL_ERR(priv, "initializing driver failed\n");
4277                 goto out_unset_hw_params;
4278         }
4279
4280         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4281                 priv->cfg->name);
4282
4283         /***********************
4284          * 7. Setup Services
4285          * ********************/
4286
4287         spin_lock_irqsave(&priv->lock, flags);
4288         iwl_disable_interrupts(priv);
4289         spin_unlock_irqrestore(&priv->lock, flags);
4290
4291         pci_enable_msi(priv->pci_dev);
4292
4293         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4294                           IRQF_SHARED, DRV_NAME, priv);
4295         if (err) {
4296                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4297                 goto out_disable_msi;
4298         }
4299
4300         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4301         if (err) {
4302                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4303                 goto out_release_irq;
4304         }
4305
4306         iwl_set_rxon_channel(priv,
4307                              &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4308         iwl3945_setup_deferred_work(priv);
4309         iwl3945_setup_rx_handlers(priv);
4310
4311         /*********************************
4312          * 8. Setup and Register mac80211
4313          * *******************************/
4314
4315         iwl_enable_interrupts(priv);
4316
4317         err = iwl3945_setup_mac(priv);
4318         if (err)
4319                 goto  out_remove_sysfs;
4320
4321         err = iwl_dbgfs_register(priv, DRV_NAME);
4322         if (err)
4323                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4324
4325         err = iwl_rfkill_init(priv);
4326         if (err)
4327                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
4328                                   "Ignoring error: %d\n", err);
4329         else
4330                 iwl_rfkill_set_hw_state(priv);
4331
4332         /* Start monitoring the killswitch */
4333         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4334                            2 * HZ);
4335
4336         return 0;
4337
4338  out_remove_sysfs:
4339         destroy_workqueue(priv->workqueue);
4340         priv->workqueue = NULL;
4341         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4342  out_release_irq:
4343         free_irq(priv->pci_dev->irq, priv);
4344  out_disable_msi:
4345         pci_disable_msi(priv->pci_dev);
4346         iwlcore_free_geos(priv);
4347         iwl_free_channel_map(priv);
4348  out_unset_hw_params:
4349         iwl3945_unset_hw_params(priv);
4350  out_eeprom_free:
4351         iwl_eeprom_free(priv);
4352  out_iounmap:
4353         pci_iounmap(pdev, priv->hw_base);
4354  out_pci_release_regions:
4355         pci_release_regions(pdev);
4356  out_pci_disable_device:
4357         pci_set_drvdata(pdev, NULL);
4358         pci_disable_device(pdev);
4359  out_ieee80211_free_hw:
4360         ieee80211_free_hw(priv->hw);
4361  out:
4362         return err;
4363 }
4364
4365 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4366 {
4367         struct iwl_priv *priv = pci_get_drvdata(pdev);
4368         unsigned long flags;
4369
4370         if (!priv)
4371                 return;
4372
4373         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4374
4375         iwl_dbgfs_unregister(priv);
4376
4377         set_bit(STATUS_EXIT_PENDING, &priv->status);
4378
4379         if (priv->mac80211_registered) {
4380                 ieee80211_unregister_hw(priv->hw);
4381                 priv->mac80211_registered = 0;
4382         } else {
4383                 iwl3945_down(priv);
4384         }
4385
4386         /* make sure we flush any pending irq or
4387          * tasklet for the driver
4388          */
4389         spin_lock_irqsave(&priv->lock, flags);
4390         iwl_disable_interrupts(priv);
4391         spin_unlock_irqrestore(&priv->lock, flags);
4392
4393         iwl_synchronize_irq(priv);
4394
4395         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4396
4397         iwl_rfkill_unregister(priv);
4398         cancel_delayed_work_sync(&priv->rfkill_poll);
4399
4400         iwl3945_dealloc_ucode_pci(priv);
4401
4402         if (priv->rxq.bd)
4403                 iwl3945_rx_queue_free(priv, &priv->rxq);
4404         iwl3945_hw_txq_ctx_free(priv);
4405
4406         iwl3945_unset_hw_params(priv);
4407         priv->cfg->ops->smgmt->clear_station_table(priv);
4408
4409         /*netif_stop_queue(dev); */
4410         flush_workqueue(priv->workqueue);
4411
4412         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4413          * priv->workqueue... so we can't take down the workqueue
4414          * until now... */
4415         destroy_workqueue(priv->workqueue);
4416         priv->workqueue = NULL;
4417
4418         free_irq(pdev->irq, priv);
4419         pci_disable_msi(pdev);
4420
4421         pci_iounmap(pdev, priv->hw_base);
4422         pci_release_regions(pdev);
4423         pci_disable_device(pdev);
4424         pci_set_drvdata(pdev, NULL);
4425
4426         iwl_free_channel_map(priv);
4427         iwlcore_free_geos(priv);
4428         kfree(priv->scan);
4429         if (priv->ibss_beacon)
4430                 dev_kfree_skb(priv->ibss_beacon);
4431
4432         ieee80211_free_hw(priv->hw);
4433 }
4434
4435
4436 /*****************************************************************************
4437  *
4438  * driver and module entry point
4439  *
4440  *****************************************************************************/
4441
4442 static struct pci_driver iwl3945_driver = {
4443         .name = DRV_NAME,
4444         .id_table = iwl3945_hw_card_ids,
4445         .probe = iwl3945_pci_probe,
4446         .remove = __devexit_p(iwl3945_pci_remove),
4447 #ifdef CONFIG_PM
4448         .suspend = iwl_pci_suspend,
4449         .resume = iwl_pci_resume,
4450 #endif
4451 };
4452
4453 static int __init iwl3945_init(void)
4454 {
4455
4456         int ret;
4457         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4458         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4459
4460         ret = iwl3945_rate_control_register();
4461         if (ret) {
4462                 printk(KERN_ERR DRV_NAME
4463                        "Unable to register rate control algorithm: %d\n", ret);
4464                 return ret;
4465         }
4466
4467         ret = pci_register_driver(&iwl3945_driver);
4468         if (ret) {
4469                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4470                 goto error_register;
4471         }
4472
4473         return ret;
4474
4475 error_register:
4476         iwl3945_rate_control_unregister();
4477         return ret;
4478 }
4479
4480 static void __exit iwl3945_exit(void)
4481 {
4482         pci_unregister_driver(&iwl3945_driver);
4483         iwl3945_rate_control_unregister();
4484 }
4485
4486 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4487
4488 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4489 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4490 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4491 MODULE_PARM_DESC(swcrypto,
4492                  "using software crypto (default 1 [software])\n");
4493 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
4494 MODULE_PARM_DESC(debug, "debug output mask");
4495 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4496 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4497
4498 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
4499 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4500
4501 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4502 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4503
4504 module_exit(iwl3945_exit);
4505 module_init(iwl3945_init);