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/sched.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/ieee80211_radiotap.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 DRV_VERSION  IWLWIFI_VERSION VD VS
  80 #define DRV_COPYRIGHT   "Copyright(c) 2003-2009 Intel Corporation"
  81 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  82
  83 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  84 MODULE_VERSION(DRV_VERSION);
  85 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  86 MODULE_LICENSE("GPL");
  87
  88  /* module parameters */
  89 struct iwl_mod_params iwl3945_mod_params = {
  90         .sw_crypto = 1,
  91         .restart_fw = 1,
  92         /* the rest are 0 by default */
  93 };
  94
  95 /**
  96  * iwl3945_get_antenna_flags - Get antenna flags for RXON command
  97  * @priv: eeprom and antenna fields are used to determine antenna flags
  98  *
  99  * priv->eeprom39  is used to determine if antenna AUX/MAIN are reversed
 100  * iwl3945_mod_params.antenna specifies the antenna diversity mode:
 101  *
 102  * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
 103  * IWL_ANTENNA_MAIN      - Force MAIN antenna
 104  * IWL_ANTENNA_AUX       - Force AUX antenna
 105  */
 106 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
 107 {
 108         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
 109
 110         switch (iwl3945_mod_params.antenna) {
 111         case IWL_ANTENNA_DIVERSITY:
 112                 return 0;
 113
 114         case IWL_ANTENNA_MAIN:
 115                 if (eeprom->antenna_switch_type)
 116                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 117                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 118
 119         case IWL_ANTENNA_AUX:
 120                 if (eeprom->antenna_switch_type)
 121                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 122                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 123         }
 124
 125         /* bad antenna selector value */
 126         IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
 127                 iwl3945_mod_params.antenna);
 128
 129         return 0;               /* "diversity" is default if error */
 130 }
 131
 132 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
 133                                    struct ieee80211_key_conf *keyconf,
 134                                    u8 sta_id)
 135 {
 136         unsigned long flags;
 137         __le16 key_flags = 0;
 138         int ret;
 139
 140         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
 141         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
 142
 143         if (sta_id == priv->hw_params.bcast_sta_id)
 144                 key_flags |= STA_KEY_MULTICAST_MSK;
 145
 146         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 147         keyconf->hw_key_idx = keyconf->keyidx;
 148         key_flags &= ~STA_KEY_FLG_INVALID;
 149
 150         spin_lock_irqsave(&priv->sta_lock, flags);
 151         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
 152         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
 153         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
 154                keyconf->keylen);
 155
 156         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
 157                keyconf->keylen);
 158
 159         if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
 160                         == STA_KEY_FLG_NO_ENC)
 161                 priv->stations[sta_id].sta.key.key_offset =
 162                                  iwl_get_free_ucode_key_index(priv);
 163         /* else, we are overriding an existing key => no need to allocated room
 164         * in uCode. */
 165
 166         WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
 167                 "no space for a new key");
 168
 169         priv->stations[sta_id].sta.key.key_flags = key_flags;
 170         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 171         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 172
 173         IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
 174
 175         ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
 176
 177         spin_unlock_irqrestore(&priv->sta_lock, flags);
 178
 179         return ret;
 180 }
 181
 182 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
 183                                   struct ieee80211_key_conf *keyconf,
 184                                   u8 sta_id)
 185 {
 186         return -EOPNOTSUPP;
 187 }
 188
 189 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
 190                                   struct ieee80211_key_conf *keyconf,
 191                                   u8 sta_id)
 192 {
 193         return -EOPNOTSUPP;
 194 }
 195
 196 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
 197 {
 198         unsigned long flags;
 199
 200         spin_lock_irqsave(&priv->sta_lock, flags);
 201         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
 202         memset(&priv->stations[sta_id].sta.key, 0,
 203                 sizeof(struct iwl4965_keyinfo));
 204         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
 205         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 206         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 207         spin_unlock_irqrestore(&priv->sta_lock, flags);
 208
 209         IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
 210         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
 211         return 0;
 212 }
 213
 214 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
 215                         struct ieee80211_key_conf *keyconf, u8 sta_id)
 216 {
 217         int ret = 0;
 218
 219         keyconf->hw_key_idx = HW_KEY_DYNAMIC;
 220
 221         switch (keyconf->alg) {
 222         case ALG_CCMP:
 223                 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
 224                 break;
 225         case ALG_TKIP:
 226                 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
 227                 break;
 228         case ALG_WEP:
 229                 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
 230                 break;
 231         default:
 232                 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
 233                 ret = -EINVAL;
 234         }
 235
 236         IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
 237                       keyconf->alg, keyconf->keylen, keyconf->keyidx,
 238                       sta_id, ret);
 239
 240         return ret;
 241 }
 242
 243 static int iwl3945_remove_static_key(struct iwl_priv *priv)
 244 {
 245         int ret = -EOPNOTSUPP;
 246
 247         return ret;
 248 }
 249
 250 static int iwl3945_set_static_key(struct iwl_priv *priv,
 251                                 struct ieee80211_key_conf *key)
 252 {
 253         if (key->alg == ALG_WEP)
 254                 return -EOPNOTSUPP;
 255
 256         IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
 257         return -EINVAL;
 258 }
 259
 260 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
 261 {
 262         struct list_head *element;
 263
 264         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 265                        priv->frames_count);
 266
 267         while (!list_empty(&priv->free_frames)) {
 268                 element = priv->free_frames.next;
 269                 list_del(element);
 270                 kfree(list_entry(element, struct iwl3945_frame, list));
 271                 priv->frames_count--;
 272         }
 273
 274         if (priv->frames_count) {
 275                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 276                             priv->frames_count);
 277                 priv->frames_count = 0;
 278         }
 279 }
 280
 281 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
 282 {
 283         struct iwl3945_frame *frame;
 284         struct list_head *element;
 285         if (list_empty(&priv->free_frames)) {
 286                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 287                 if (!frame) {
 288                         IWL_ERR(priv, "Could not allocate frame!\n");
 289                         return NULL;
 290                 }
 291
 292                 priv->frames_count++;
 293                 return frame;
 294         }
 295
 296         element = priv->free_frames.next;
 297         list_del(element);
 298         return list_entry(element, struct iwl3945_frame, list);
 299 }
 300
 301 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
 302 {
 303         memset(frame, 0, sizeof(*frame));
 304         list_add(&frame->list, &priv->free_frames);
 305 }
 306
 307 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
 308                                 struct ieee80211_hdr *hdr,
 309                                 int left)
 310 {
 311
 312         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 313             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 314              (priv->iw_mode != NL80211_IFTYPE_AP)))
 315                 return 0;
 316
 317         if (priv->ibss_beacon->len > left)
 318                 return 0;
 319
 320         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 321
 322         return priv->ibss_beacon->len;
 323 }
 324
 325 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
 326 {
 327         struct iwl3945_frame *frame;
 328         unsigned int frame_size;
 329         int rc;
 330         u8 rate;
 331
 332         frame = iwl3945_get_free_frame(priv);
 333
 334         if (!frame) {
 335                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 336                           "command.\n");
 337                 return -ENOMEM;
 338         }
 339
 340         rate = iwl_rate_get_lowest_plcp(priv);
 341
 342         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
 343
 344         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 345                               &frame->u.cmd[0]);
 346
 347         iwl3945_free_frame(priv, frame);
 348
 349         return rc;
 350 }
 351
 352 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
 353 {
 354         if (priv->shared_virt)
 355                 pci_free_consistent(priv->pci_dev,
 356                                     sizeof(struct iwl3945_shared),
 357                                     priv->shared_virt,
 358                                     priv->shared_phys);
 359 }
 360
 361 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
 362                                       struct ieee80211_tx_info *info,
 363                                       struct iwl_device_cmd *cmd,
 364                                       struct sk_buff *skb_frag,
 365                                       int sta_id)
 366 {
 367         struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 368         struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
 369
 370         switch (keyinfo->alg) {
 371         case ALG_CCMP:
 372                 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
 373                 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
 374                 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
 375                 break;
 376
 377         case ALG_TKIP:
 378                 break;
 379
 380         case ALG_WEP:
 381                 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
 382                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
 383
 384                 if (keyinfo->keylen == 13)
 385                         tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
 386
 387                 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
 388
 389                 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
 390                              "with key %d\n", info->control.hw_key->hw_key_idx);
 391                 break;
 392
 393         default:
 394                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
 395                 break;
 396         }
 397 }
 398
 399 /*
 400  * handle build REPLY_TX command notification.
 401  */
 402 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
 403                                   struct iwl_device_cmd *cmd,
 404                                   struct ieee80211_tx_info *info,
 405                                   struct ieee80211_hdr *hdr, u8 std_id)
 406 {
 407         struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 408         __le32 tx_flags = tx_cmd->tx_flags;
 409         __le16 fc = hdr->frame_control;
 410
 411         tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 412         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 413                 tx_flags |= TX_CMD_FLG_ACK_MSK;
 414                 if (ieee80211_is_mgmt(fc))
 415                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 416                 if (ieee80211_is_probe_resp(fc) &&
 417                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
 418                         tx_flags |= TX_CMD_FLG_TSF_MSK;
 419         } else {
 420                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
 421                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 422         }
 423
 424         tx_cmd->sta_id = std_id;
 425         if (ieee80211_has_morefrags(fc))
 426                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
 427
 428         if (ieee80211_is_data_qos(fc)) {
 429                 u8 *qc = ieee80211_get_qos_ctl(hdr);
 430                 tx_cmd->tid_tspec = qc[0] & 0xf;
 431                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
 432         } else {
 433                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 434         }
 435
 436         priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
 437
 438         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
 439                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
 440
 441         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
 442         if (ieee80211_is_mgmt(fc)) {
 443                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
 444                         tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
 445                 else
 446                         tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
 447         } else {
 448                 tx_cmd->timeout.pm_frame_timeout = 0;
 449         }
 450
 451         tx_cmd->driver_txop = 0;
 452         tx_cmd->tx_flags = tx_flags;
 453         tx_cmd->next_frame_len = 0;
 454 }
 455
 456 /*
 457  * start REPLY_TX command process
 458  */
 459 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 460 {
 461         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 462         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 463         struct iwl3945_tx_cmd *tx_cmd;
 464         struct iwl_tx_queue *txq = NULL;
 465         struct iwl_queue *q = NULL;
 466         struct iwl_device_cmd *out_cmd;
 467         struct iwl_cmd_meta *out_meta;
 468         dma_addr_t phys_addr;
 469         dma_addr_t txcmd_phys;
 470         int txq_id = skb_get_queue_mapping(skb);
 471         u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
 472         u8 id;
 473         u8 unicast;
 474         u8 sta_id;
 475         u8 tid = 0;
 476         u16 seq_number = 0;
 477         __le16 fc;
 478         u8 wait_write_ptr = 0;
 479         u8 *qc = NULL;
 480         unsigned long flags;
 481         int rc;
 482
 483         spin_lock_irqsave(&priv->lock, flags);
 484         if (iwl_is_rfkill(priv)) {
 485                 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
 486                 goto drop_unlock;
 487         }
 488
 489         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
 490                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
 491                 goto drop_unlock;
 492         }
 493
 494         unicast = !is_multicast_ether_addr(hdr->addr1);
 495         id = 0;
 496
 497         fc = hdr->frame_control;
 498
 499 #ifdef CONFIG_IWLWIFI_DEBUG
 500         if (ieee80211_is_auth(fc))
 501                 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
 502         else if (ieee80211_is_assoc_req(fc))
 503                 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
 504         else if (ieee80211_is_reassoc_req(fc))
 505                 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
 506 #endif
 507
 508         /* drop all non-injected data frame if we are not associated */
 509         if (ieee80211_is_data(fc) &&
 510             !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
 511             (!iwl_is_associated(priv) ||
 512              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
 513                 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
 514                 goto drop_unlock;
 515         }
 516
 517         spin_unlock_irqrestore(&priv->lock, flags);
 518
 519         hdr_len = ieee80211_hdrlen(fc);
 520
 521         /* Find (or create) index into station table for destination station */
 522         if (info->flags & IEEE80211_TX_CTL_INJECTED)
 523                 sta_id = priv->hw_params.bcast_sta_id;
 524         else
 525                 sta_id = iwl_get_sta_id(priv, hdr);
 526         if (sta_id == IWL_INVALID_STATION) {
 527                 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
 528                                hdr->addr1);
 529                 goto drop;
 530         }
 531
 532         IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
 533
 534         if (ieee80211_is_data_qos(fc)) {
 535                 qc = ieee80211_get_qos_ctl(hdr);
 536                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
 537                 if (unlikely(tid >= MAX_TID_COUNT))
 538                         goto drop;
 539                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
 540                                 IEEE80211_SCTL_SEQ;
 541                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
 542                         (hdr->seq_ctrl &
 543                                 cpu_to_le16(IEEE80211_SCTL_FRAG));
 544                 seq_number += 0x10;
 545         }
 546
 547         /* Descriptor for chosen Tx queue */
 548         txq = &priv->txq[txq_id];
 549         q = &txq->q;
 550
 551         if ((iwl_queue_space(q) < q->high_mark))
 552                 goto drop;
 553
 554         spin_lock_irqsave(&priv->lock, flags);
 555
 556         idx = get_cmd_index(q, q->write_ptr, 0);
 557
 558         /* Set up driver data for this TFD */
 559         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
 560         txq->txb[q->write_ptr].skb[0] = skb;
 561
 562         /* Init first empty entry in queue's array of Tx/cmd buffers */
 563         out_cmd = txq->cmd[idx];
 564         out_meta = &txq->meta[idx];
 565         tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
 566         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
 567         memset(tx_cmd, 0, sizeof(*tx_cmd));
 568
 569         /*
 570          * Set up the Tx-command (not MAC!) header.
 571          * Store the chosen Tx queue and TFD index within the sequence field;
 572          * after Tx, uCode's Tx response will return this value so driver can
 573          * locate the frame within the tx queue and do post-tx processing.
 574          */
 575         out_cmd->hdr.cmd = REPLY_TX;
 576         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
 577                                 INDEX_TO_SEQ(q->write_ptr)));
 578
 579         /* Copy MAC header from skb into command buffer */
 580         memcpy(tx_cmd->hdr, hdr, hdr_len);
 581
 582
 583         if (info->control.hw_key)
 584                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
 585
 586         /* TODO need this for burst mode later on */
 587         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
 588
 589         /* set is_hcca to 0; it probably will never be implemented */
 590         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
 591
 592         /* Total # bytes to be transmitted */
 593         len = (u16)skb->len;
 594         tx_cmd->len = cpu_to_le16(len);
 595
 596         iwl_dbg_log_tx_data_frame(priv, len, hdr);
 597         iwl_update_stats(priv, true, fc, len);
 598         tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
 599         tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
 600
 601         if (!ieee80211_has_morefrags(hdr->frame_control)) {
 602                 txq->need_update = 1;
 603                 if (qc)
 604                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
 605         } else {
 606                 wait_write_ptr = 1;
 607                 txq->need_update = 0;
 608         }
 609
 610         IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
 611                      le16_to_cpu(out_cmd->hdr.sequence));
 612         IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd->tx_flags));
 613         iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
 614         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
 615                            ieee80211_hdrlen(fc));
 616
 617         /*
 618          * Use the first empty entry in this queue's command buffer array
 619          * to contain the Tx command and MAC header concatenated together
 620          * (payload data will be in another buffer).
 621          * Size of this varies, due to varying MAC header length.
 622          * If end is not dword aligned, we'll have 2 extra bytes at the end
 623          * of the MAC header (device reads on dword boundaries).
 624          * We'll tell device about this padding later.
 625          */
 626         len = sizeof(struct iwl3945_tx_cmd) +
 627                         sizeof(struct iwl_cmd_header) + hdr_len;
 628
 629         len_org = len;
 630         len = (len + 3) & ~3;
 631
 632         if (len_org != len)
 633                 len_org = 1;
 634         else
 635                 len_org = 0;
 636
 637         /* Physical address of this Tx command's header (not MAC header!),
 638          * within command buffer array. */
 639         txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
 640                                     len, PCI_DMA_TODEVICE);
 641         /* we do not map meta data ... so we can safely access address to
 642          * provide to unmap command*/
 643         pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
 644         pci_unmap_len_set(out_meta, len, len);
 645
 646         /* Add buffer containing Tx command and MAC(!) header to TFD's
 647          * first entry */
 648         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
 649                                                    txcmd_phys, len, 1, 0);
 650
 651
 652         /* Set up TFD's 2nd entry to point directly to remainder of skb,
 653          * if any (802.11 null frames have no payload). */
 654         len = skb->len - hdr_len;
 655         if (len) {
 656                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
 657                                            len, PCI_DMA_TODEVICE);
 658                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
 659                                                            phys_addr, len,
 660                                                            0, U32_PAD(len));
 661         }
 662
 663
 664         /* Tell device the write index *just past* this latest filled TFD */
 665         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 666         rc = iwl_txq_update_write_ptr(priv, txq);
 667         spin_unlock_irqrestore(&priv->lock, flags);
 668
 669         if (rc)
 670                 return rc;
 671
 672         if ((iwl_queue_space(q) < q->high_mark)
 673             && priv->mac80211_registered) {
 674                 if (wait_write_ptr) {
 675                         spin_lock_irqsave(&priv->lock, flags);
 676                         txq->need_update = 1;
 677                         iwl_txq_update_write_ptr(priv, txq);
 678                         spin_unlock_irqrestore(&priv->lock, flags);
 679                 }
 680
 681                 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
 682         }
 683
 684         return 0;
 685
 686 drop_unlock:
 687         spin_unlock_irqrestore(&priv->lock, flags);
 688 drop:
 689         return -1;
 690 }
 691
 692 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
 693
 694 #include "iwl-spectrum.h"
 695
 696 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 697 #define BEACON_TIME_MASK_HIGH   0xFF000000
 698 #define TIME_UNIT               1024
 699
 700 /*
 701  * extended beacon time format
 702  * time in usec will be changed into a 32-bit value in 8:24 format
 703  * the high 1 byte is the beacon counts
 704  * the lower 3 bytes is the time in usec within one beacon interval
 705  */
 706
 707 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
 708 {
 709         u32 quot;
 710         u32 rem;
 711         u32 interval = beacon_interval * 1024;
 712
 713         if (!interval || !usec)
 714                 return 0;
 715
 716         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 717         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 718
 719         return (quot << 24) + rem;
 720 }
 721
 722 /* base is usually what we get from ucode with each received frame,
 723  * the same as HW timer counter counting down
 724  */
 725
 726 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 727 {
 728         u32 base_low = base & BEACON_TIME_MASK_LOW;
 729         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 730         u32 interval = beacon_interval * TIME_UNIT;
 731         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 732             (addon & BEACON_TIME_MASK_HIGH);
 733
 734         if (base_low > addon_low)
 735                 res += base_low - addon_low;
 736         else if (base_low < addon_low) {
 737                 res += interval + base_low - addon_low;
 738                 res += (1 << 24);
 739         } else
 740                 res += (1 << 24);
 741
 742         return cpu_to_le32(res);
 743 }
 744
 745 static int iwl3945_get_measurement(struct iwl_priv *priv,
 746                                struct ieee80211_measurement_params *params,
 747                                u8 type)
 748 {
 749         struct iwl_spectrum_cmd spectrum;
 750         struct iwl_rx_packet *pkt;
 751         struct iwl_host_cmd cmd = {
 752                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 753                 .data = (void *)&spectrum,
 754                 .flags = CMD_WANT_SKB,
 755         };
 756         u32 add_time = le64_to_cpu(params->start_time);
 757         int rc;
 758         int spectrum_resp_status;
 759         int duration = le16_to_cpu(params->duration);
 760
 761         if (iwl_is_associated(priv))
 762                 add_time =
 763                     iwl3945_usecs_to_beacons(
 764                         le64_to_cpu(params->start_time) - priv->last_tsf,
 765                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 766
 767         memset(&spectrum, 0, sizeof(spectrum));
 768
 769         spectrum.channel_count = cpu_to_le16(1);
 770         spectrum.flags =
 771             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 772         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 773         cmd.len = sizeof(spectrum);
 774         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 775
 776         if (iwl_is_associated(priv))
 777                 spectrum.start_time =
 778                     iwl3945_add_beacon_time(priv->last_beacon_time,
 779                                 add_time,
 780                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 781         else
 782                 spectrum.start_time = 0;
 783
 784         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 785         spectrum.channels[0].channel = params->channel;
 786         spectrum.channels[0].type = type;
 787         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 788                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 789                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 790
 791         rc = iwl_send_cmd_sync(priv, &cmd);
 792         if (rc)
 793                 return rc;
 794
 795         pkt = (struct iwl_rx_packet *)cmd.reply_page;
 796         if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 797                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
 798                 rc = -EIO;
 799         }
 800
 801         spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
 802         switch (spectrum_resp_status) {
 803         case 0:         /* Command will be handled */
 804                 if (pkt->u.spectrum.id != 0xff) {
 805                         IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
 806                                                 pkt->u.spectrum.id);
 807                         priv->measurement_status &= ~MEASUREMENT_READY;
 808                 }
 809                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 810                 rc = 0;
 811                 break;
 812
 813         case 1:         /* Command will not be handled */
 814                 rc = -EAGAIN;
 815                 break;
 816         }
 817
 818         iwl_free_pages(priv, cmd.reply_page);
 819
 820         return rc;
 821 }
 822 #endif
 823
 824 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
 825                                struct iwl_rx_mem_buffer *rxb)
 826 {
 827         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 828         struct iwl_alive_resp *palive;
 829         struct delayed_work *pwork;
 830
 831         palive = &pkt->u.alive_frame;
 832
 833         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 834                        "0x%01X 0x%01X\n",
 835                        palive->is_valid, palive->ver_type,
 836                        palive->ver_subtype);
 837
 838         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 839                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 840                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
 841                        sizeof(struct iwl_alive_resp));
 842                 pwork = &priv->init_alive_start;
 843         } else {
 844                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 845                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 846                        sizeof(struct iwl_alive_resp));
 847                 pwork = &priv->alive_start;
 848                 iwl3945_disable_events(priv);
 849         }
 850
 851         /* We delay the ALIVE response by 5ms to
 852          * give the HW RF Kill time to activate... */
 853         if (palive->is_valid == UCODE_VALID_OK)
 854                 queue_delayed_work(priv->workqueue, pwork,
 855                                    msecs_to_jiffies(5));
 856         else
 857                 IWL_WARN(priv, "uCode did not respond OK.\n");
 858 }
 859
 860 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
 861                                  struct iwl_rx_mem_buffer *rxb)
 862 {
 863 #ifdef CONFIG_IWLWIFI_DEBUG
 864         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 865 #endif
 866
 867         IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
 868         return;
 869 }
 870
 871 static void iwl3945_bg_beacon_update(struct work_struct *work)
 872 {
 873         struct iwl_priv *priv =
 874                 container_of(work, struct iwl_priv, beacon_update);
 875         struct sk_buff *beacon;
 876
 877         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 878         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 879
 880         if (!beacon) {
 881                 IWL_ERR(priv, "update beacon failed\n");
 882                 return;
 883         }
 884
 885         mutex_lock(&priv->mutex);
 886         /* new beacon skb is allocated every time; dispose previous.*/
 887         if (priv->ibss_beacon)
 888                 dev_kfree_skb(priv->ibss_beacon);
 889
 890         priv->ibss_beacon = beacon;
 891         mutex_unlock(&priv->mutex);
 892
 893         iwl3945_send_beacon_cmd(priv);
 894 }
 895
 896 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
 897                                 struct iwl_rx_mem_buffer *rxb)
 898 {
 899 #ifdef CONFIG_IWLWIFI_DEBUG
 900         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 901         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
 902         u8 rate = beacon->beacon_notify_hdr.rate;
 903
 904         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 905                 "tsf %d %d rate %d\n",
 906                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
 907                 beacon->beacon_notify_hdr.failure_frame,
 908                 le32_to_cpu(beacon->ibss_mgr_status),
 909                 le32_to_cpu(beacon->high_tsf),
 910                 le32_to_cpu(beacon->low_tsf), rate);
 911 #endif
 912
 913         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 914             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 915                 queue_work(priv->workqueue, &priv->beacon_update);
 916 }
 917
 918 /* Handle notification from uCode that card's power state is changing
 919  * due to software, hardware, or critical temperature RFKILL */
 920 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
 921                                     struct iwl_rx_mem_buffer *rxb)
 922 {
 923         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 924         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 925         unsigned long status = priv->status;
 926
 927         IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
 928                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 929                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 930
 931         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 932                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 933
 934         if (flags & HW_CARD_DISABLED)
 935                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 936         else
 937                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 938
 939
 940         iwl_scan_cancel(priv);
 941
 942         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 943              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 944                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 945                                 test_bit(STATUS_RF_KILL_HW, &priv->status));
 946         else
 947                 wake_up_interruptible(&priv->wait_command_queue);
 948 }
 949
 950 /**
 951  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
 952  *
 953  * Setup the RX handlers for each of the reply types sent from the uCode
 954  * to the host.
 955  *
 956  * This function chains into the hardware specific files for them to setup
 957  * any hardware specific handlers as well.
 958  */
 959 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
 960 {
 961         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
 962         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
 963         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 964         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 965         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 966         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 967             iwl_rx_pm_debug_statistics_notif;
 968         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
 969
 970         /*
 971          * The same handler is used for both the REPLY to a discrete
 972          * statistics request from the host as well as for the periodic
 973          * statistics notifications (after received beacons) from the uCode.
 974          */
 975         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
 976         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
 977
 978         iwl_setup_spectrum_handlers(priv);
 979         iwl_setup_rx_scan_handlers(priv);
 980         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
 981
 982         /* Set up hardware specific Rx handlers */
 983         iwl3945_hw_rx_handler_setup(priv);
 984 }
 985
 986 /************************** RX-FUNCTIONS ****************************/
 987 /*
 988  * Rx theory of operation
 989  *
 990  * The host allocates 32 DMA target addresses and passes the host address
 991  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
 992  * 0 to 31
 993  *
 994  * Rx Queue Indexes
 995  * The host/firmware share two index registers for managing the Rx buffers.
 996  *
 997  * The READ index maps to the first position that the firmware may be writing
 998  * to -- the driver can read up to (but not including) this position and get
 999  * good data.
1000  * The READ index is managed by the firmware once the card is enabled.
1001  *
1002  * The WRITE index maps to the last position the driver has read from -- the
1003  * position preceding WRITE is the last slot the firmware can place a packet.
1004  *
1005  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1006  * WRITE = READ.
1007  *
1008  * During initialization, the host sets up the READ queue position to the first
1009  * INDEX position, and WRITE to the last (READ - 1 wrapped)
1010  *
1011  * When the firmware places a packet in a buffer, it will advance the READ index
1012  * and fire the RX interrupt.  The driver can then query the READ index and
1013  * process as many packets as possible, moving the WRITE index forward as it
1014  * resets the Rx queue buffers with new memory.
1015  *
1016  * The management in the driver is as follows:
1017  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
1018  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1019  *   to replenish the iwl->rxq->rx_free.
1020  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1021  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
1022  *   'processed' and 'read' driver indexes as well)
1023  * + A received packet is processed and handed to the kernel network stack,
1024  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
1025  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1026  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1027  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
1028  *   were enough free buffers and RX_STALLED is set it is cleared.
1029  *
1030  *
1031  * Driver sequence:
1032  *
1033  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
1034  *                            iwl3945_rx_queue_restock
1035  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1036  *                            queue, updates firmware pointers, and updates
1037  *                            the WRITE index.  If insufficient rx_free buffers
1038  *                            are available, schedules iwl3945_rx_replenish
1039  *
1040  * -- enable interrupts --
1041  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
1042  *                            READ INDEX, detaching the SKB from the pool.
1043  *                            Moves the packet buffer from queue to rx_used.
1044  *                            Calls iwl3945_rx_queue_restock to refill any empty
1045  *                            slots.
1046  * ...
1047  *
1048  */
1049
1050 /**
1051  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1052  */
1053 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1054                                           dma_addr_t dma_addr)
1055 {
1056         return cpu_to_le32((u32)dma_addr);
1057 }
1058
1059 /**
1060  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1061  *
1062  * If there are slots in the RX queue that need to be restocked,
1063  * and we have free pre-allocated buffers, fill the ranks as much
1064  * as we can, pulling from rx_free.
1065  *
1066  * This moves the 'write' index forward to catch up with 'processed', and
1067  * also updates the memory address in the firmware to reference the new
1068  * target buffer.
1069  */
1070 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1071 {
1072         struct iwl_rx_queue *rxq = &priv->rxq;
1073         struct list_head *element;
1074         struct iwl_rx_mem_buffer *rxb;
1075         unsigned long flags;
1076         int write, rc;
1077
1078         spin_lock_irqsave(&rxq->lock, flags);
1079         write = rxq->write & ~0x7;
1080         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1081                 /* Get next free Rx buffer, remove from free list */
1082                 element = rxq->rx_free.next;
1083                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1084                 list_del(element);
1085
1086                 /* Point to Rx buffer via next RBD in circular buffer */
1087                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1088                 rxq->queue[rxq->write] = rxb;
1089                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1090                 rxq->free_count--;
1091         }
1092         spin_unlock_irqrestore(&rxq->lock, flags);
1093         /* If the pre-allocated buffer pool is dropping low, schedule to
1094          * refill it */
1095         if (rxq->free_count <= RX_LOW_WATERMARK)
1096                 queue_work(priv->workqueue, &priv->rx_replenish);
1097
1098
1099         /* If we've added more space for the firmware to place data, tell it.
1100          * Increment device's write pointer in multiples of 8. */
1101         if ((rxq->write_actual != (rxq->write & ~0x7))
1102             || (abs(rxq->write - rxq->read) > 7)) {
1103                 spin_lock_irqsave(&rxq->lock, flags);
1104                 rxq->need_update = 1;
1105                 spin_unlock_irqrestore(&rxq->lock, flags);
1106                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1107                 if (rc)
1108                         return rc;
1109         }
1110
1111         return 0;
1112 }
1113
1114 /**
1115  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1116  *
1117  * When moving to rx_free an SKB is allocated for the slot.
1118  *
1119  * Also restock the Rx queue via iwl3945_rx_queue_restock.
1120  * This is called as a scheduled work item (except for during initialization)
1121  */
1122 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1123 {
1124         struct iwl_rx_queue *rxq = &priv->rxq;
1125         struct list_head *element;
1126         struct iwl_rx_mem_buffer *rxb;
1127         struct page *page;
1128         unsigned long flags;
1129         gfp_t gfp_mask = priority;
1130
1131         while (1) {
1132                 spin_lock_irqsave(&rxq->lock, flags);
1133
1134                 if (list_empty(&rxq->rx_used)) {
1135                         spin_unlock_irqrestore(&rxq->lock, flags);
1136                         return;
1137                 }
1138                 spin_unlock_irqrestore(&rxq->lock, flags);
1139
1140                 if (rxq->free_count > RX_LOW_WATERMARK)
1141                         gfp_mask |= __GFP_NOWARN;
1142
1143                 if (priv->hw_params.rx_page_order > 0)
1144                         gfp_mask |= __GFP_COMP;
1145
1146                 /* Alloc a new receive buffer */
1147                 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1148                 if (!page) {
1149                         if (net_ratelimit())
1150                                 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1151                         if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1152                             net_ratelimit())
1153                                 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1154                                          priority == GFP_ATOMIC ?  "GFP_ATOMIC" : "GFP_KERNEL",
1155                                          rxq->free_count);
1156                         /* We don't reschedule replenish work here -- we will
1157                          * call the restock method and if it still needs
1158                          * more buffers it will schedule replenish */
1159                         break;
1160                 }
1161
1162                 spin_lock_irqsave(&rxq->lock, flags);
1163                 if (list_empty(&rxq->rx_used)) {
1164                         spin_unlock_irqrestore(&rxq->lock, flags);
1165                         __free_pages(page, priv->hw_params.rx_page_order);
1166                         return;
1167                 }
1168                 element = rxq->rx_used.next;
1169                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1170                 list_del(element);
1171                 spin_unlock_irqrestore(&rxq->lock, flags);
1172
1173                 rxb->page = page;
1174                 /* Get physical address of RB/SKB */
1175                 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1176                                 PAGE_SIZE << priv->hw_params.rx_page_order,
1177                                 PCI_DMA_FROMDEVICE);
1178
1179                 spin_lock_irqsave(&rxq->lock, flags);
1180
1181                 list_add_tail(&rxb->list, &rxq->rx_free);
1182                 rxq->free_count++;
1183                 priv->alloc_rxb_page++;
1184
1185                 spin_unlock_irqrestore(&rxq->lock, flags);
1186         }
1187 }
1188
1189 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1190 {
1191         unsigned long flags;
1192         int i;
1193         spin_lock_irqsave(&rxq->lock, flags);
1194         INIT_LIST_HEAD(&rxq->rx_free);
1195         INIT_LIST_HEAD(&rxq->rx_used);
1196         /* Fill the rx_used queue with _all_ of the Rx buffers */
1197         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1198                 /* In the reset function, these buffers may have been allocated
1199                  * to an SKB, so we need to unmap and free potential storage */
1200                 if (rxq->pool[i].page != NULL) {
1201                         pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1202                                 PAGE_SIZE << priv->hw_params.rx_page_order,
1203                                 PCI_DMA_FROMDEVICE);
1204                         __iwl_free_pages(priv, rxq->pool[i].page);
1205                         rxq->pool[i].page = NULL;
1206                 }
1207                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1208         }
1209
1210         /* Set us so that we have processed and used all buffers, but have
1211          * not restocked the Rx queue with fresh buffers */
1212         rxq->read = rxq->write = 0;
1213         rxq->write_actual = 0;
1214         rxq->free_count = 0;
1215         spin_unlock_irqrestore(&rxq->lock, flags);
1216 }
1217
1218 void iwl3945_rx_replenish(void *data)
1219 {
1220         struct iwl_priv *priv = data;
1221         unsigned long flags;
1222
1223         iwl3945_rx_allocate(priv, GFP_KERNEL);
1224
1225         spin_lock_irqsave(&priv->lock, flags);
1226         iwl3945_rx_queue_restock(priv);
1227         spin_unlock_irqrestore(&priv->lock, flags);
1228 }
1229
1230 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1231 {
1232         iwl3945_rx_allocate(priv, GFP_ATOMIC);
1233
1234         iwl3945_rx_queue_restock(priv);
1235 }
1236
1237
1238 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1239  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1240  * This free routine walks the list of POOL entries and if SKB is set to
1241  * non NULL it is unmapped and freed
1242  */
1243 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1244 {
1245         int i;
1246         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1247                 if (rxq->pool[i].page != NULL) {
1248                         pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1249                                 PAGE_SIZE << priv->hw_params.rx_page_order,
1250                                 PCI_DMA_FROMDEVICE);
1251                         __iwl_free_pages(priv, rxq->pool[i].page);
1252                         rxq->pool[i].page = NULL;
1253                 }
1254         }
1255
1256         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1257                             rxq->dma_addr);
1258         pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1259                             rxq->rb_stts, rxq->rb_stts_dma);
1260         rxq->bd = NULL;
1261         rxq->rb_stts  = NULL;
1262 }
1263
1264
1265 /* Convert linear signal-to-noise ratio into dB */
1266 static u8 ratio2dB[100] = {
1267 /*       0   1   2   3   4   5   6   7   8   9 */
1268          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1269         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1270         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1271         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1272         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1273         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1274         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1275         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1276         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1277         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
1278 };
1279
1280 /* Calculates a relative dB value from a ratio of linear
1281  *   (i.e. not dB) signal levels.
1282  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1283 int iwl3945_calc_db_from_ratio(int sig_ratio)
1284 {
1285         /* 1000:1 or higher just report as 60 dB */
1286         if (sig_ratio >= 1000)
1287                 return 60;
1288
1289         /* 100:1 or higher, divide by 10 and use table,
1290          *   add 20 dB to make up for divide by 10 */
1291         if (sig_ratio >= 100)
1292                 return 20 + (int)ratio2dB[sig_ratio/10];
1293
1294         /* We shouldn't see this */
1295         if (sig_ratio < 1)
1296                 return 0;
1297
1298         /* Use table for ratios 1:1 - 99:1 */
1299         return (int)ratio2dB[sig_ratio];
1300 }
1301
1302 /**
1303  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1304  *
1305  * Uses the priv->rx_handlers callback function array to invoke
1306  * the appropriate handlers, including command responses,
1307  * frame-received notifications, and other notifications.
1308  */
1309 static void iwl3945_rx_handle(struct iwl_priv *priv)
1310 {
1311         struct iwl_rx_mem_buffer *rxb;
1312         struct iwl_rx_packet *pkt;
1313         struct iwl_rx_queue *rxq = &priv->rxq;
1314         u32 r, i;
1315         int reclaim;
1316         unsigned long flags;
1317         u8 fill_rx = 0;
1318         u32 count = 8;
1319         int total_empty = 0;
1320
1321         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1322          * buffer that the driver may process (last buffer filled by ucode). */
1323         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1324         i = rxq->read;
1325
1326         /* calculate total frames need to be restock after handling RX */
1327         total_empty = r - rxq->write_actual;
1328         if (total_empty < 0)
1329                 total_empty += RX_QUEUE_SIZE;
1330
1331         if (total_empty > (RX_QUEUE_SIZE / 2))
1332                 fill_rx = 1;
1333         /* Rx interrupt, but nothing sent from uCode */
1334         if (i == r)
1335                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1336
1337         while (i != r) {
1338                 rxb = rxq->queue[i];
1339
1340                 /* If an RXB doesn't have a Rx queue slot associated with it,
1341                  * then a bug has been introduced in the queue refilling
1342                  * routines -- catch it here */
1343                 BUG_ON(rxb == NULL);
1344
1345                 rxq->queue[i] = NULL;
1346
1347                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1348                                PAGE_SIZE << priv->hw_params.rx_page_order,
1349                                PCI_DMA_FROMDEVICE);
1350                 pkt = rxb_addr(rxb);
1351
1352                 trace_iwlwifi_dev_rx(priv, pkt,
1353                         le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1354
1355                 /* Reclaim a command buffer only if this packet is a response
1356                  *   to a (driver-originated) command.
1357                  * If the packet (e.g. Rx frame) originated from uCode,
1358                  *   there is no command buffer to reclaim.
1359                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1360                  *   but apparently a few don't get set; catch them here. */
1361                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1362                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1363                         (pkt->hdr.cmd != REPLY_TX);
1364
1365                 /* Based on type of command response or notification,
1366                  *   handle those that need handling via function in
1367                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
1368                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1369                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1370                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1371                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1372                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1373                 } else {
1374                         /* No handling needed */
1375                         IWL_DEBUG_RX(priv,
1376                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1377                                 r, i, get_cmd_string(pkt->hdr.cmd),
1378                                 pkt->hdr.cmd);
1379                 }
1380
1381                 /*
1382                  * XXX: After here, we should always check rxb->page
1383                  * against NULL before touching it or its virtual
1384                  * memory (pkt). Because some rx_handler might have
1385                  * already taken or freed the pages.
1386                  */
1387
1388                 if (reclaim) {
1389                         /* Invoke any callbacks, transfer the buffer to caller,
1390                          * and fire off the (possibly) blocking iwl_send_cmd()
1391                          * as we reclaim the driver command queue */
1392                         if (rxb->page)
1393                                 iwl_tx_cmd_complete(priv, rxb);
1394                         else
1395                                 IWL_WARN(priv, "Claim null rxb?\n");
1396                 }
1397
1398                 /* Reuse the page if possible. For notification packets and
1399                  * SKBs that fail to Rx correctly, add them back into the
1400                  * rx_free list for reuse later. */
1401                 spin_lock_irqsave(&rxq->lock, flags);
1402                 if (rxb->page != NULL) {
1403                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1404                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1405                                 PCI_DMA_FROMDEVICE);
1406                         list_add_tail(&rxb->list, &rxq->rx_free);
1407                         rxq->free_count++;
1408                 } else
1409                         list_add_tail(&rxb->list, &rxq->rx_used);
1410
1411                 spin_unlock_irqrestore(&rxq->lock, flags);
1412
1413                 i = (i + 1) & RX_QUEUE_MASK;
1414                 /* If there are a lot of unused frames,
1415                  * restock the Rx queue so ucode won't assert. */
1416                 if (fill_rx) {
1417                         count++;
1418                         if (count >= 8) {
1419                                 rxq->read = i;
1420                                 iwl3945_rx_replenish_now(priv);
1421                                 count = 0;
1422                         }
1423                 }
1424         }
1425
1426         /* Backtrack one entry */
1427         rxq->read = i;
1428         if (fill_rx)
1429                 iwl3945_rx_replenish_now(priv);
1430         else
1431                 iwl3945_rx_queue_restock(priv);
1432 }
1433
1434 /* call this function to flush any scheduled tasklet */
1435 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1436 {
1437         /* wait to make sure we flush pending tasklet*/
1438         synchronize_irq(priv->pci_dev->irq);
1439         tasklet_kill(&priv->irq_tasklet);
1440 }
1441
1442 static const char *desc_lookup(int i)
1443 {
1444         switch (i) {
1445         case 1:
1446                 return "FAIL";
1447         case 2:
1448                 return "BAD_PARAM";
1449         case 3:
1450                 return "BAD_CHECKSUM";
1451         case 4:
1452                 return "NMI_INTERRUPT";
1453         case 5:
1454                 return "SYSASSERT";
1455         case 6:
1456                 return "FATAL_ERROR";
1457         }
1458
1459         return "UNKNOWN";
1460 }
1461
1462 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1463 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1464
1465 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1466 {
1467         u32 i;
1468         u32 desc, time, count, base, data1;
1469         u32 blink1, blink2, ilink1, ilink2;
1470
1471         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1472
1473         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1474                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1475                 return;
1476         }
1477
1478
1479         count = iwl_read_targ_mem(priv, base);
1480
1481         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1482                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1483                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1484                         priv->status, count);
1485         }
1486
1487         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
1488                   "ilink1  nmiPC   Line\n");
1489         for (i = ERROR_START_OFFSET;
1490              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1491              i += ERROR_ELEM_SIZE) {
1492                 desc = iwl_read_targ_mem(priv, base + i);
1493                 time =
1494                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1495                 blink1 =
1496                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1497                 blink2 =
1498                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1499                 ilink1 =
1500                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1501                 ilink2 =
1502                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1503                 data1 =
1504                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1505
1506                 IWL_ERR(priv,
1507                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1508                         desc_lookup(desc), desc, time, blink1, blink2,
1509                         ilink1, ilink2, data1);
1510                 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1511                                         0, blink1, blink2, ilink1, ilink2);
1512         }
1513 }
1514
1515 #define EVENT_START_OFFSET  (6 * sizeof(u32))
1516
1517 /**
1518  * iwl3945_print_event_log - Dump error event log to syslog
1519  *
1520  */
1521 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1522                                 u32 num_events, u32 mode)
1523 {
1524         u32 i;
1525         u32 base;       /* SRAM byte address of event log header */
1526         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1527         u32 ptr;        /* SRAM byte address of log data */
1528         u32 ev, time, data; /* event log data */
1529         unsigned long reg_flags;
1530
1531         if (num_events == 0)
1532                 return;
1533
1534         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1535
1536         if (mode == 0)
1537                 event_size = 2 * sizeof(u32);
1538         else
1539                 event_size = 3 * sizeof(u32);
1540
1541         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1542
1543         /* Make sure device is powered up for SRAM reads */
1544         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1545         iwl_grab_nic_access(priv);
1546
1547         /* Set starting address; reads will auto-increment */
1548         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1549         rmb();
1550
1551         /* "time" is actually "data" for mode 0 (no timestamp).
1552          * place event id # at far right for easier visual parsing. */
1553         for (i = 0; i < num_events; i++) {
1554                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1555                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1556                 if (mode == 0) {
1557                         /* data, ev */
1558                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1559                         trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1560                 } else {
1561                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1562                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1563                         trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1564                 }
1565         }
1566
1567         /* Allow device to power down */
1568         iwl_release_nic_access(priv);
1569         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1570 }
1571
1572 /**
1573  * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1574  */
1575 static void iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1576                                       u32 num_wraps, u32 next_entry,
1577                                       u32 size, u32 mode)
1578 {
1579         /*
1580          * display the newest DEFAULT_LOG_ENTRIES entries
1581          * i.e the entries just before the next ont that uCode would fill.
1582          */
1583         if (num_wraps) {
1584                 if (next_entry < size) {
1585                         iwl3945_print_event_log(priv,
1586                                         capacity - (size - next_entry),
1587                                         size - next_entry, mode);
1588                         iwl3945_print_event_log(priv, 0,
1589                                     next_entry, mode);
1590                 } else
1591                         iwl3945_print_event_log(priv, next_entry - size,
1592                                     size, mode);
1593         } else {
1594                 if (next_entry < size)
1595                         iwl3945_print_event_log(priv, 0, next_entry, mode);
1596                 else
1597                         iwl3945_print_event_log(priv, next_entry - size,
1598                                             size, mode);
1599         }
1600 }
1601
1602 /* For sanity check only.  Actual size is determined by uCode, typ. 512 */
1603 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1604
1605 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1606
1607 void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
1608 {
1609         u32 base;       /* SRAM byte address of event log header */
1610         u32 capacity;   /* event log capacity in # entries */
1611         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1612         u32 num_wraps;  /* # times uCode wrapped to top of log */
1613         u32 next_entry; /* index of next entry to be written by uCode */
1614         u32 size;       /* # entries that we'll print */
1615
1616         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1617         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1618                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1619                 return;
1620         }
1621
1622         /* event log header */
1623         capacity = iwl_read_targ_mem(priv, base);
1624         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1625         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1626         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1627
1628         if (capacity > IWL3945_MAX_EVENT_LOG_SIZE) {
1629                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1630                         capacity, IWL3945_MAX_EVENT_LOG_SIZE);
1631                 capacity = IWL3945_MAX_EVENT_LOG_SIZE;
1632         }
1633
1634         if (next_entry > IWL3945_MAX_EVENT_LOG_SIZE) {
1635                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1636                         next_entry, IWL3945_MAX_EVENT_LOG_SIZE);
1637                 next_entry = IWL3945_MAX_EVENT_LOG_SIZE;
1638         }
1639
1640         size = num_wraps ? capacity : next_entry;
1641
1642         /* bail out if nothing in log */
1643         if (size == 0) {
1644                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1645                 return;
1646         }
1647
1648 #ifdef CONFIG_IWLWIFI_DEBUG
1649         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1650                 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1651                         ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1652 #else
1653         size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1654                 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1655 #endif
1656
1657         IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1658                   size);
1659
1660 #ifdef CONFIG_IWLWIFI_DEBUG
1661         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1662                 /* if uCode has wrapped back to top of log,
1663                  * start at the oldest entry,
1664                  * i.e the next one that uCode would fill.
1665                  */
1666                 if (num_wraps)
1667                         iwl3945_print_event_log(priv, next_entry,
1668                                     capacity - next_entry, mode);
1669
1670                 /* (then/else) start at top of log */
1671                 iwl3945_print_event_log(priv, 0, next_entry, mode);
1672         } else
1673                 iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1674                                         next_entry, size, mode);
1675 #else
1676         iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1677                                 next_entry, size, mode);
1678 #endif
1679
1680 }
1681
1682 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1683 {
1684         u32 inta, handled = 0;
1685         u32 inta_fh;
1686         unsigned long flags;
1687 #ifdef CONFIG_IWLWIFI_DEBUG
1688         u32 inta_mask;
1689 #endif
1690
1691         spin_lock_irqsave(&priv->lock, flags);
1692
1693         /* Ack/clear/reset pending uCode interrupts.
1694          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1695          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1696         inta = iwl_read32(priv, CSR_INT);
1697         iwl_write32(priv, CSR_INT, inta);
1698
1699         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1700          * Any new interrupts that happen after this, either while we're
1701          * in this tasklet, or later, will show up in next ISR/tasklet. */
1702         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1703         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1704
1705 #ifdef CONFIG_IWLWIFI_DEBUG
1706         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1707                 /* just for debug */
1708                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1709                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1710                               inta, inta_mask, inta_fh);
1711         }
1712 #endif
1713
1714         spin_unlock_irqrestore(&priv->lock, flags);
1715
1716         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1717          * atomic, make sure that inta covers all the interrupts that
1718          * we've discovered, even if FH interrupt came in just after
1719          * reading CSR_INT. */
1720         if (inta_fh & CSR39_FH_INT_RX_MASK)
1721                 inta |= CSR_INT_BIT_FH_RX;
1722         if (inta_fh & CSR39_FH_INT_TX_MASK)
1723                 inta |= CSR_INT_BIT_FH_TX;
1724
1725         /* Now service all interrupt bits discovered above. */
1726         if (inta & CSR_INT_BIT_HW_ERR) {
1727                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1728
1729                 /* Tell the device to stop sending interrupts */
1730                 iwl_disable_interrupts(priv);
1731
1732                 priv->isr_stats.hw++;
1733                 iwl_irq_handle_error(priv);
1734
1735                 handled |= CSR_INT_BIT_HW_ERR;
1736
1737                 return;
1738         }
1739
1740 #ifdef CONFIG_IWLWIFI_DEBUG
1741         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1742                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1743                 if (inta & CSR_INT_BIT_SCD) {
1744                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1745                                       "the frame/frames.\n");
1746                         priv->isr_stats.sch++;
1747                 }
1748
1749                 /* Alive notification via Rx interrupt will do the real work */
1750                 if (inta & CSR_INT_BIT_ALIVE) {
1751                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1752                         priv->isr_stats.alive++;
1753                 }
1754         }
1755 #endif
1756         /* Safely ignore these bits for debug checks below */
1757         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1758
1759         /* Error detected by uCode */
1760         if (inta & CSR_INT_BIT_SW_ERR) {
1761                 IWL_ERR(priv, "Microcode SW error detected. "
1762                         "Restarting 0x%X.\n", inta);
1763                 priv->isr_stats.sw++;
1764                 priv->isr_stats.sw_err = inta;
1765                 iwl_irq_handle_error(priv);
1766                 handled |= CSR_INT_BIT_SW_ERR;
1767         }
1768
1769         /* uCode wakes up after power-down sleep */
1770         if (inta & CSR_INT_BIT_WAKEUP) {
1771                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1772                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1773                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1774                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1775                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1776                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1777                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1778                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1779
1780                 priv->isr_stats.wakeup++;
1781                 handled |= CSR_INT_BIT_WAKEUP;
1782         }
1783
1784         /* All uCode command responses, including Tx command responses,
1785          * Rx "responses" (frame-received notification), and other
1786          * notifications from uCode come through here*/
1787         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1788                 iwl3945_rx_handle(priv);
1789                 priv->isr_stats.rx++;
1790                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1791         }
1792
1793         if (inta & CSR_INT_BIT_FH_TX) {
1794                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1795                 priv->isr_stats.tx++;
1796
1797                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1798                 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1799                                         (FH39_SRVC_CHNL), 0x0);
1800                 handled |= CSR_INT_BIT_FH_TX;
1801         }
1802
1803         if (inta & ~handled) {
1804                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1805                 priv->isr_stats.unhandled++;
1806         }
1807
1808         if (inta & ~priv->inta_mask) {
1809                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1810                          inta & ~priv->inta_mask);
1811                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1812         }
1813
1814         /* Re-enable all interrupts */
1815         /* only Re-enable if disabled by irq */
1816         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1817                 iwl_enable_interrupts(priv);
1818
1819 #ifdef CONFIG_IWLWIFI_DEBUG
1820         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1821                 inta = iwl_read32(priv, CSR_INT);
1822                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1823                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1824                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1825                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1826         }
1827 #endif
1828 }
1829
1830 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1831                                          enum ieee80211_band band,
1832                                      u8 is_active, u8 n_probes,
1833                                      struct iwl3945_scan_channel *scan_ch)
1834 {
1835         struct ieee80211_channel *chan;
1836         const struct ieee80211_supported_band *sband;
1837         const struct iwl_channel_info *ch_info;
1838         u16 passive_dwell = 0;
1839         u16 active_dwell = 0;
1840         int added, i;
1841
1842         sband = iwl_get_hw_mode(priv, band);
1843         if (!sband)
1844                 return 0;
1845
1846         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1847         passive_dwell = iwl_get_passive_dwell_time(priv, band);
1848
1849         if (passive_dwell <= active_dwell)
1850                 passive_dwell = active_dwell + 1;
1851
1852         for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1853                 chan = priv->scan_request->channels[i];
1854
1855                 if (chan->band != band)
1856                         continue;
1857
1858                 scan_ch->channel = chan->hw_value;
1859
1860                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1861                 if (!is_channel_valid(ch_info)) {
1862                         IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1863                                        scan_ch->channel);
1864                         continue;
1865                 }
1866
1867                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1868                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1869                 /* If passive , set up for auto-switch
1870                  *  and use long active_dwell time.
1871                  */
1872                 if (!is_active || is_channel_passive(ch_info) ||
1873                     (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1874                         scan_ch->type = 0;      /* passive */
1875                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
1876                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1877                 } else {
1878                         scan_ch->type = 1;      /* active */
1879                 }
1880
1881                 /* Set direct probe bits. These may be used both for active
1882                  * scan channels (probes gets sent right away),
1883                  * or for passive channels (probes get se sent only after
1884                  * hearing clear Rx packet).*/
1885                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1886                         if (n_probes)
1887                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1888                 } else {
1889                         /* uCode v1 does not allow setting direct probe bits on
1890                          * passive channel. */
1891                         if ((scan_ch->type & 1) && n_probes)
1892                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1893                 }
1894
1895                 /* Set txpower levels to defaults */
1896                 scan_ch->tpc.dsp_atten = 110;
1897                 /* scan_pwr_info->tpc.dsp_atten; */
1898
1899                 /*scan_pwr_info->tpc.tx_gain; */
1900                 if (band == IEEE80211_BAND_5GHZ)
1901                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1902                 else {
1903                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1904                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1905                          * power level:
1906                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1907                          */
1908                 }
1909
1910                 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1911                                scan_ch->channel,
1912                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1913                                (scan_ch->type & 1) ?
1914                                active_dwell : passive_dwell);
1915
1916                 scan_ch++;
1917                 added++;
1918         }
1919
1920         IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1921         return added;
1922 }
1923
1924 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1925                               struct ieee80211_rate *rates)
1926 {
1927         int i;
1928
1929         for (i = 0; i < IWL_RATE_COUNT; i++) {
1930                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1931                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1932                 rates[i].hw_value_short = i;
1933                 rates[i].flags = 0;
1934                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1935                         /*
1936                          * If CCK != 1M then set short preamble rate flag.
1937                          */
1938                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1939                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1940                 }
1941         }
1942 }
1943
1944 /******************************************************************************
1945  *
1946  * uCode download functions
1947  *
1948  ******************************************************************************/
1949
1950 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1951 {
1952         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1953         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1954         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1955         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1956         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1957         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1958 }
1959
1960 /**
1961  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1962  *     looking at all data.
1963  */
1964 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1965 {
1966         u32 val;
1967         u32 save_len = len;
1968         int rc = 0;
1969         u32 errcnt;
1970
1971         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1972
1973         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1974                                IWL39_RTC_INST_LOWER_BOUND);
1975
1976         errcnt = 0;
1977         for (; len > 0; len -= sizeof(u32), image++) {
1978                 /* read data comes through single port, auto-incr addr */
1979                 /* NOTE: Use the debugless read so we don't flood kernel log
1980                  * if IWL_DL_IO is set */
1981                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1982                 if (val != le32_to_cpu(*image)) {
1983                         IWL_ERR(priv, "uCode INST section is invalid at "
1984                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1985                                   save_len - len, val, le32_to_cpu(*image));
1986                         rc = -EIO;
1987                         errcnt++;
1988                         if (errcnt >= 20)
1989                                 break;
1990                 }
1991         }
1992
1993
1994         if (!errcnt)
1995                 IWL_DEBUG_INFO(priv,
1996                         "ucode image in INSTRUCTION memory is good\n");
1997
1998         return rc;
1999 }
2000
2001
2002 /**
2003  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2004  *   using sample data 100 bytes apart.  If these sample points are good,
2005  *   it's a pretty good bet that everything between them is good, too.
2006  */
2007 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2008 {
2009         u32 val;
2010         int rc = 0;
2011         u32 errcnt = 0;
2012         u32 i;
2013
2014         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2015
2016         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2017                 /* read data comes through single port, auto-incr addr */
2018                 /* NOTE: Use the debugless read so we don't flood kernel log
2019                  * if IWL_DL_IO is set */
2020                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2021                         i + IWL39_RTC_INST_LOWER_BOUND);
2022                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2023                 if (val != le32_to_cpu(*image)) {
2024 #if 0 /* Enable this if you want to see details */
2025                         IWL_ERR(priv, "uCode INST section is invalid at "
2026                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2027                                   i, val, *image);
2028 #endif
2029                         rc = -EIO;
2030                         errcnt++;
2031                         if (errcnt >= 3)
2032                                 break;
2033                 }
2034         }
2035
2036         return rc;
2037 }
2038
2039
2040 /**
2041  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2042  *    and verify its contents
2043  */
2044 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2045 {
2046         __le32 *image;
2047         u32 len;
2048         int rc = 0;
2049
2050         /* Try bootstrap */
2051         image = (__le32 *)priv->ucode_boot.v_addr;
2052         len = priv->ucode_boot.len;
2053         rc = iwl3945_verify_inst_sparse(priv, image, len);
2054         if (rc == 0) {
2055                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2056                 return 0;
2057         }
2058
2059         /* Try initialize */
2060         image = (__le32 *)priv->ucode_init.v_addr;
2061         len = priv->ucode_init.len;
2062         rc = iwl3945_verify_inst_sparse(priv, image, len);
2063         if (rc == 0) {
2064                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2065                 return 0;
2066         }
2067
2068         /* Try runtime/protocol */
2069         image = (__le32 *)priv->ucode_code.v_addr;
2070         len = priv->ucode_code.len;
2071         rc = iwl3945_verify_inst_sparse(priv, image, len);
2072         if (rc == 0) {
2073                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2074                 return 0;
2075         }
2076
2077         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2078
2079         /* Since nothing seems to match, show first several data entries in
2080          * instruction SRAM, so maybe visual inspection will give a clue.
2081          * Selection of bootstrap image (vs. other images) is arbitrary. */
2082         image = (__le32 *)priv->ucode_boot.v_addr;
2083         len = priv->ucode_boot.len;
2084         rc = iwl3945_verify_inst_full(priv, image, len);
2085
2086         return rc;
2087 }
2088
2089 static void iwl3945_nic_start(struct iwl_priv *priv)
2090 {
2091         /* Remove all resets to allow NIC to operate */
2092         iwl_write32(priv, CSR_RESET, 0);
2093 }
2094
2095 /**
2096  * iwl3945_read_ucode - Read uCode images from disk file.
2097  *
2098  * Copy into buffers for card to fetch via bus-mastering
2099  */
2100 static int iwl3945_read_ucode(struct iwl_priv *priv)
2101 {
2102         const struct iwl_ucode_header *ucode;
2103         int ret = -EINVAL, index;
2104         const struct firmware *ucode_raw;
2105         /* firmware file name contains uCode/driver compatibility version */
2106         const char *name_pre = priv->cfg->fw_name_pre;
2107         const unsigned int api_max = priv->cfg->ucode_api_max;
2108         const unsigned int api_min = priv->cfg->ucode_api_min;
2109         char buf[25];
2110         u8 *src;
2111         size_t len;
2112         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2113
2114         /* Ask kernel firmware_class module to get the boot firmware off disk.
2115          * request_firmware() is synchronous, file is in memory on return. */
2116         for (index = api_max; index >= api_min; index--) {
2117                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2118                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2119                 if (ret < 0) {
2120                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
2121                                   buf, ret);
2122                         if (ret == -ENOENT)
2123                                 continue;
2124                         else
2125                                 goto error;
2126                 } else {
2127                         if (index < api_max)
2128                                 IWL_ERR(priv, "Loaded firmware %s, "
2129                                         "which is deprecated. "
2130                                         " Please use API v%u instead.\n",
2131                                           buf, api_max);
2132                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2133                                        "(%zd bytes) from disk\n",
2134                                        buf, ucode_raw->size);
2135                         break;
2136                 }
2137         }
2138
2139         if (ret < 0)
2140                 goto error;
2141
2142         /* Make sure that we got at least our header! */
2143         if (ucode_raw->size <  priv->cfg->ops->ucode->get_header_size(1)) {
2144                 IWL_ERR(priv, "File size way too small!\n");
2145                 ret = -EINVAL;
2146                 goto err_release;
2147         }
2148
2149         /* Data from ucode file:  header followed by uCode images */
2150         ucode = (struct iwl_ucode_header *)ucode_raw->data;
2151
2152         priv->ucode_ver = le32_to_cpu(ucode->ver);
2153         api_ver = IWL_UCODE_API(priv->ucode_ver);
2154         inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2155         data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2156         init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2157         init_data_size =
2158                 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2159         boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2160         src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2161
2162         /* api_ver should match the api version forming part of the
2163          * firmware filename ... but we don't check for that and only rely
2164          * on the API version read from firmware header from here on forward */
2165
2166         if (api_ver < api_min || api_ver > api_max) {
2167                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2168                           "Driver supports v%u, firmware is v%u.\n",
2169                           api_max, api_ver);
2170                 priv->ucode_ver = 0;
2171                 ret = -EINVAL;
2172                 goto err_release;
2173         }
2174         if (api_ver != api_max)
2175                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2176                           "got %u. New firmware can be obtained "
2177                           "from http://www.intellinuxwireless.org.\n",
2178                           api_max, api_ver);
2179
2180         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2181                 IWL_UCODE_MAJOR(priv->ucode_ver),
2182                 IWL_UCODE_MINOR(priv->ucode_ver),
2183                 IWL_UCODE_API(priv->ucode_ver),
2184                 IWL_UCODE_SERIAL(priv->ucode_ver));
2185
2186         snprintf(priv->hw->wiphy->fw_version,
2187                  sizeof(priv->hw->wiphy->fw_version),
2188                  "%u.%u.%u.%u",
2189                  IWL_UCODE_MAJOR(priv->ucode_ver),
2190                  IWL_UCODE_MINOR(priv->ucode_ver),
2191                  IWL_UCODE_API(priv->ucode_ver),
2192                  IWL_UCODE_SERIAL(priv->ucode_ver));
2193
2194         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2195                        priv->ucode_ver);
2196         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2197                        inst_size);
2198         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2199                        data_size);
2200         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2201                        init_size);
2202         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2203                        init_data_size);
2204         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2205                        boot_size);
2206
2207
2208         /* Verify size of file vs. image size info in file's header */
2209         if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2210                 inst_size + data_size + init_size +
2211                 init_data_size + boot_size) {
2212
2213                 IWL_DEBUG_INFO(priv,
2214                         "uCode file size %zd does not match expected size\n",
2215                         ucode_raw->size);
2216                 ret = -EINVAL;
2217                 goto err_release;
2218         }
2219
2220         /* Verify that uCode images will fit in card's SRAM */
2221         if (inst_size > IWL39_MAX_INST_SIZE) {
2222                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2223                                inst_size);
2224                 ret = -EINVAL;
2225                 goto err_release;
2226         }
2227
2228         if (data_size > IWL39_MAX_DATA_SIZE) {
2229                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2230                                data_size);
2231                 ret = -EINVAL;
2232                 goto err_release;
2233         }
2234         if (init_size > IWL39_MAX_INST_SIZE) {
2235                 IWL_DEBUG_INFO(priv,
2236                                 "uCode init instr len %d too large to fit in\n",
2237                                 init_size);
2238                 ret = -EINVAL;
2239                 goto err_release;
2240         }
2241         if (init_data_size > IWL39_MAX_DATA_SIZE) {
2242                 IWL_DEBUG_INFO(priv,
2243                                 "uCode init data len %d too large to fit in\n",
2244                                 init_data_size);
2245                 ret = -EINVAL;
2246                 goto err_release;
2247         }
2248         if (boot_size > IWL39_MAX_BSM_SIZE) {
2249                 IWL_DEBUG_INFO(priv,
2250                                 "uCode boot instr len %d too large to fit in\n",
2251                                 boot_size);
2252                 ret = -EINVAL;
2253                 goto err_release;
2254         }
2255
2256         /* Allocate ucode buffers for card's bus-master loading ... */
2257
2258         /* Runtime instructions and 2 copies of data:
2259          * 1) unmodified from disk
2260          * 2) backup cache for save/restore during power-downs */
2261         priv->ucode_code.len = inst_size;
2262         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2263
2264         priv->ucode_data.len = data_size;
2265         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2266
2267         priv->ucode_data_backup.len = data_size;
2268         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2269
2270         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2271             !priv->ucode_data_backup.v_addr)
2272                 goto err_pci_alloc;
2273
2274         /* Initialization instructions and data */
2275         if (init_size && init_data_size) {
2276                 priv->ucode_init.len = init_size;
2277                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2278
2279                 priv->ucode_init_data.len = init_data_size;
2280                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2281
2282                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2283                         goto err_pci_alloc;
2284         }
2285
2286         /* Bootstrap (instructions only, no data) */
2287         if (boot_size) {
2288                 priv->ucode_boot.len = boot_size;
2289                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2290
2291                 if (!priv->ucode_boot.v_addr)
2292                         goto err_pci_alloc;
2293         }
2294
2295         /* Copy images into buffers for card's bus-master reads ... */
2296
2297         /* Runtime instructions (first block of data in file) */
2298         len = inst_size;
2299         IWL_DEBUG_INFO(priv,
2300                 "Copying (but not loading) uCode instr len %zd\n", len);
2301         memcpy(priv->ucode_code.v_addr, src, len);
2302         src += len;
2303
2304         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2305                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2306
2307         /* Runtime data (2nd block)
2308          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
2309         len = data_size;
2310         IWL_DEBUG_INFO(priv,
2311                 "Copying (but not loading) uCode data len %zd\n", len);
2312         memcpy(priv->ucode_data.v_addr, src, len);
2313         memcpy(priv->ucode_data_backup.v_addr, src, len);
2314         src += len;
2315
2316         /* Initialization instructions (3rd block) */
2317         if (init_size) {
2318                 len = init_size;
2319                 IWL_DEBUG_INFO(priv,
2320                         "Copying (but not loading) init instr len %zd\n", len);
2321                 memcpy(priv->ucode_init.v_addr, src, len);
2322                 src += len;
2323         }
2324
2325         /* Initialization data (4th block) */
2326         if (init_data_size) {
2327                 len = init_data_size;
2328                 IWL_DEBUG_INFO(priv,
2329                         "Copying (but not loading) init data len %zd\n", len);
2330                 memcpy(priv->ucode_init_data.v_addr, src, len);
2331                 src += len;
2332         }
2333
2334         /* Bootstrap instructions (5th block) */
2335         len = boot_size;
2336         IWL_DEBUG_INFO(priv,
2337                 "Copying (but not loading) boot instr len %zd\n", len);
2338         memcpy(priv->ucode_boot.v_addr, src, len);
2339
2340         /* We have our copies now, allow OS release its copies */
2341         release_firmware(ucode_raw);
2342         return 0;
2343
2344  err_pci_alloc:
2345         IWL_ERR(priv, "failed to allocate pci memory\n");
2346         ret = -ENOMEM;
2347         iwl3945_dealloc_ucode_pci(priv);
2348
2349  err_release:
2350         release_firmware(ucode_raw);
2351
2352  error:
2353         return ret;
2354 }
2355
2356
2357 /**
2358  * iwl3945_set_ucode_ptrs - Set uCode address location
2359  *
2360  * Tell initialization uCode where to find runtime uCode.
2361  *
2362  * BSM registers initially contain pointers to initialization uCode.
2363  * We need to replace them to load runtime uCode inst and data,
2364  * and to save runtime data when powering down.
2365  */
2366 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2367 {
2368         dma_addr_t pinst;
2369         dma_addr_t pdata;
2370
2371         /* bits 31:0 for 3945 */
2372         pinst = priv->ucode_code.p_addr;
2373         pdata = priv->ucode_data_backup.p_addr;
2374
2375         /* Tell bootstrap uCode where to find image to load */
2376         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2377         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2378         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2379                                  priv->ucode_data.len);
2380
2381         /* Inst byte count must be last to set up, bit 31 signals uCode
2382          *   that all new ptr/size info is in place */
2383         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2384                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2385
2386         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2387
2388         return 0;
2389 }
2390
2391 /**
2392  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2393  *
2394  * Called after REPLY_ALIVE notification received from "initialize" uCode.
2395  *
2396  * Tell "initialize" uCode to go ahead and load the runtime uCode.
2397  */
2398 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2399 {
2400         /* Check alive response for "valid" sign from uCode */
2401         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2402                 /* We had an error bringing up the hardware, so take it
2403                  * all the way back down so we can try again */
2404                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2405                 goto restart;
2406         }
2407
2408         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2409          * This is a paranoid check, because we would not have gotten the
2410          * "initialize" alive if code weren't properly loaded.  */
2411         if (iwl3945_verify_ucode(priv)) {
2412                 /* Runtime instruction load was bad;
2413                  * take it all the way back down so we can try again */
2414                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2415                 goto restart;
2416         }
2417
2418         /* Send pointers to protocol/runtime uCode image ... init code will
2419          * load and launch runtime uCode, which will send us another "Alive"
2420          * notification. */
2421         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2422         if (iwl3945_set_ucode_ptrs(priv)) {
2423                 /* Runtime instruction load won't happen;
2424                  * take it all the way back down so we can try again */
2425                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2426                 goto restart;
2427         }
2428         return;
2429
2430  restart:
2431         queue_work(priv->workqueue, &priv->restart);
2432 }
2433
2434 /**
2435  * iwl3945_alive_start - called after REPLY_ALIVE notification received
2436  *                   from protocol/runtime uCode (initialization uCode's
2437  *                   Alive gets handled by iwl3945_init_alive_start()).
2438  */
2439 static void iwl3945_alive_start(struct iwl_priv *priv)
2440 {
2441         int thermal_spin = 0;
2442         u32 rfkill;
2443
2444         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2445
2446         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2447                 /* We had an error bringing up the hardware, so take it
2448                  * all the way back down so we can try again */
2449                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2450                 goto restart;
2451         }
2452
2453         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2454          * This is a paranoid check, because we would not have gotten the
2455          * "runtime" alive if code weren't properly loaded.  */
2456         if (iwl3945_verify_ucode(priv)) {
2457                 /* Runtime instruction load was bad;
2458                  * take it all the way back down so we can try again */
2459                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2460                 goto restart;
2461         }
2462
2463         iwl_clear_stations_table(priv);
2464
2465         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2466         IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2467
2468         if (rfkill & 0x1) {
2469                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2470                 /* if RFKILL is not on, then wait for thermal
2471                  * sensor in adapter to kick in */
2472                 while (iwl3945_hw_get_temperature(priv) == 0) {
2473                         thermal_spin++;
2474                         udelay(10);
2475                 }
2476
2477                 if (thermal_spin)
2478                         IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2479                                        thermal_spin * 10);
2480         } else
2481                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2482
2483         /* After the ALIVE response, we can send commands to 3945 uCode */
2484         set_bit(STATUS_ALIVE, &priv->status);
2485
2486         if (iwl_is_rfkill(priv))
2487                 return;
2488
2489         ieee80211_wake_queues(priv->hw);
2490
2491         priv->active_rate = priv->rates_mask;
2492         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2493
2494         iwl_power_update_mode(priv, true);
2495
2496         if (iwl_is_associated(priv)) {
2497                 struct iwl3945_rxon_cmd *active_rxon =
2498                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2499
2500                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2501                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2502         } else {
2503                 /* Initialize our rx_config data */
2504                 iwl_connection_init_rx_config(priv, priv->iw_mode);
2505         }
2506
2507         /* Configure Bluetooth device coexistence support */
2508         iwl_send_bt_config(priv);
2509
2510         /* Configure the adapter for unassociated operation */
2511         iwlcore_commit_rxon(priv);
2512
2513         iwl3945_reg_txpower_periodic(priv);
2514
2515         iwl_leds_init(priv);
2516
2517         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2518         set_bit(STATUS_READY, &priv->status);
2519         wake_up_interruptible(&priv->wait_command_queue);
2520
2521         /* reassociate for ADHOC mode */
2522         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2523                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2524                                                                 priv->vif);
2525                 if (beacon)
2526                         iwl_mac_beacon_update(priv->hw, beacon);
2527         }
2528
2529         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2530                 iwl_set_mode(priv, priv->iw_mode);
2531
2532         return;
2533
2534  restart:
2535         queue_work(priv->workqueue, &priv->restart);
2536 }
2537
2538 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2539
2540 static void __iwl3945_down(struct iwl_priv *priv)
2541 {
2542         unsigned long flags;
2543         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2544         struct ieee80211_conf *conf = NULL;
2545
2546         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2547
2548         conf = ieee80211_get_hw_conf(priv->hw);
2549
2550         if (!exit_pending)
2551                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2552
2553         iwl_clear_stations_table(priv);
2554
2555         /* Unblock any waiting calls */
2556         wake_up_interruptible_all(&priv->wait_command_queue);
2557
2558         /* Wipe out the EXIT_PENDING status bit if we are not actually
2559          * exiting the module */
2560         if (!exit_pending)
2561                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2562
2563         /* stop and reset the on-board processor */
2564         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2565
2566         /* tell the device to stop sending interrupts */
2567         spin_lock_irqsave(&priv->lock, flags);
2568         iwl_disable_interrupts(priv);
2569         spin_unlock_irqrestore(&priv->lock, flags);
2570         iwl_synchronize_irq(priv);
2571
2572         if (priv->mac80211_registered)
2573                 ieee80211_stop_queues(priv->hw);
2574
2575         /* If we have not previously called iwl3945_init() then
2576          * clear all bits but the RF Kill bits and return */
2577         if (!iwl_is_init(priv)) {
2578                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2579                                         STATUS_RF_KILL_HW |
2580                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2581                                         STATUS_GEO_CONFIGURED |
2582                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2583                                         STATUS_EXIT_PENDING;
2584                 goto exit;
2585         }
2586
2587         /* ...otherwise clear out all the status bits but the RF Kill
2588          * bit and continue taking the NIC down. */
2589         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2590                                 STATUS_RF_KILL_HW |
2591                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2592                                 STATUS_GEO_CONFIGURED |
2593                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2594                                 STATUS_FW_ERROR |
2595                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2596                                 STATUS_EXIT_PENDING;
2597
2598         iwl3945_hw_txq_ctx_stop(priv);
2599         iwl3945_hw_rxq_stop(priv);
2600
2601         /* Power-down device's busmaster DMA clocks */
2602         iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2603         udelay(5);
2604
2605         /* Stop the device, and put it in low power state */
2606         priv->cfg->ops->lib->apm_ops.stop(priv);
2607
2608  exit:
2609         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2610
2611         if (priv->ibss_beacon)
2612                 dev_kfree_skb(priv->ibss_beacon);
2613         priv->ibss_beacon = NULL;
2614
2615         /* clear out any free frames */
2616         iwl3945_clear_free_frames(priv);
2617 }
2618
2619 static void iwl3945_down(struct iwl_priv *priv)
2620 {
2621         mutex_lock(&priv->mutex);
2622         __iwl3945_down(priv);
2623         mutex_unlock(&priv->mutex);
2624
2625         iwl3945_cancel_deferred_work(priv);
2626 }
2627
2628 #define MAX_HW_RESTARTS 5
2629
2630 static int __iwl3945_up(struct iwl_priv *priv)
2631 {
2632         int rc, i;
2633
2634         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2635                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2636                 return -EIO;
2637         }
2638
2639         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2640                 IWL_ERR(priv, "ucode not available for device bring up\n");
2641                 return -EIO;
2642         }
2643
2644         /* If platform's RF_KILL switch is NOT set to KILL */
2645         if (iwl_read32(priv, CSR_GP_CNTRL) &
2646                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2647                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2648         else {
2649                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2650                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2651                 return -ENODEV;
2652         }
2653
2654         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2655
2656         rc = iwl3945_hw_nic_init(priv);
2657         if (rc) {
2658                 IWL_ERR(priv, "Unable to int nic\n");
2659                 return rc;
2660         }
2661
2662         /* make sure rfkill handshake bits are cleared */
2663         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2664         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2665                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2666
2667         /* clear (again), then enable host interrupts */
2668         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2669         iwl_enable_interrupts(priv);
2670
2671         /* really make sure rfkill handshake bits are cleared */
2672         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2673         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2674
2675         /* Copy original ucode data image from disk into backup cache.
2676          * This will be used to initialize the on-board processor's
2677          * data SRAM for a clean start when the runtime program first loads. */
2678         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2679                priv->ucode_data.len);
2680
2681         /* We return success when we resume from suspend and rf_kill is on. */
2682         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2683                 return 0;
2684
2685         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2686
2687                 iwl_clear_stations_table(priv);
2688
2689                 /* load bootstrap state machine,
2690                  * load bootstrap program into processor's memory,
2691                  * prepare to load the "initialize" uCode */
2692                 priv->cfg->ops->lib->load_ucode(priv);
2693
2694                 if (rc) {
2695                         IWL_ERR(priv,
2696                                 "Unable to set up bootstrap uCode: %d\n", rc);
2697                         continue;
2698                 }
2699
2700                 /* start card; "initialize" will load runtime ucode */
2701                 iwl3945_nic_start(priv);
2702
2703                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2704
2705                 return 0;
2706         }
2707
2708         set_bit(STATUS_EXIT_PENDING, &priv->status);
2709         __iwl3945_down(priv);
2710         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2711
2712         /* tried to restart and config the device for as long as our
2713          * patience could withstand */
2714         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2715         return -EIO;
2716 }
2717
2718
2719 /*****************************************************************************
2720  *
2721  * Workqueue callbacks
2722  *
2723  *****************************************************************************/
2724
2725 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2726 {
2727         struct iwl_priv *priv =
2728             container_of(data, struct iwl_priv, init_alive_start.work);
2729
2730         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2731                 return;
2732
2733         mutex_lock(&priv->mutex);
2734         iwl3945_init_alive_start(priv);
2735         mutex_unlock(&priv->mutex);
2736 }
2737
2738 static void iwl3945_bg_alive_start(struct work_struct *data)
2739 {
2740         struct iwl_priv *priv =
2741             container_of(data, struct iwl_priv, alive_start.work);
2742
2743         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2744                 return;
2745
2746         mutex_lock(&priv->mutex);
2747         iwl3945_alive_start(priv);
2748         mutex_unlock(&priv->mutex);
2749 }
2750
2751 /*
2752  * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2753  * driver must poll CSR_GP_CNTRL_REG register for change.  This register
2754  * *is* readable even when device has been SW_RESET into low power mode
2755  * (e.g. during RF KILL).
2756  */
2757 static void iwl3945_rfkill_poll(struct work_struct *data)
2758 {
2759         struct iwl_priv *priv =
2760             container_of(data, struct iwl_priv, rfkill_poll.work);
2761         bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2762         bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2763                         & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2764
2765         if (new_rfkill != old_rfkill) {
2766                 if (new_rfkill)
2767                         set_bit(STATUS_RF_KILL_HW, &priv->status);
2768                 else
2769                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2770
2771                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2772
2773                 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2774                                 new_rfkill ? "disable radio" : "enable radio");
2775         }
2776
2777         /* Keep this running, even if radio now enabled.  This will be
2778          * cancelled in mac_start() if system decides to start again */
2779         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2780                            round_jiffies_relative(2 * HZ));
2781
2782 }
2783
2784 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2785 static void iwl3945_bg_request_scan(struct work_struct *data)
2786 {
2787         struct iwl_priv *priv =
2788             container_of(data, struct iwl_priv, request_scan);
2789         struct iwl_host_cmd cmd = {
2790                 .id = REPLY_SCAN_CMD,
2791                 .len = sizeof(struct iwl3945_scan_cmd),
2792                 .flags = CMD_SIZE_HUGE,
2793         };
2794         int rc = 0;
2795         struct iwl3945_scan_cmd *scan;
2796         struct ieee80211_conf *conf = NULL;
2797         u8 n_probes = 0;
2798         enum ieee80211_band band;
2799         bool is_active = false;
2800
2801         conf = ieee80211_get_hw_conf(priv->hw);
2802
2803         mutex_lock(&priv->mutex);
2804
2805         cancel_delayed_work(&priv->scan_check);
2806
2807         if (!iwl_is_ready(priv)) {
2808                 IWL_WARN(priv, "request scan called when driver not ready.\n");
2809                 goto done;
2810         }
2811
2812         /* Make sure the scan wasn't canceled before this queued work
2813          * was given the chance to run... */
2814         if (!test_bit(STATUS_SCANNING, &priv->status))
2815                 goto done;
2816
2817         /* This should never be called or scheduled if there is currently
2818          * a scan active in the hardware. */
2819         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2820                 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
2821                                 "Ignoring second request.\n");
2822                 rc = -EIO;
2823                 goto done;
2824         }
2825
2826         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2827                 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2828                 goto done;
2829         }
2830
2831         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2832                 IWL_DEBUG_HC(priv,
2833                         "Scan request while abort pending. Queuing.\n");
2834                 goto done;
2835         }
2836
2837         if (iwl_is_rfkill(priv)) {
2838                 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2839                 goto done;
2840         }
2841
2842         if (!test_bit(STATUS_READY, &priv->status)) {
2843                 IWL_DEBUG_HC(priv,
2844                         "Scan request while uninitialized. Queuing.\n");
2845                 goto done;
2846         }
2847
2848         if (!priv->scan_bands) {
2849                 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2850                 goto done;
2851         }
2852
2853         if (!priv->scan) {
2854                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2855                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2856                 if (!priv->scan) {
2857                         rc = -ENOMEM;
2858                         goto done;
2859                 }
2860         }
2861         scan = priv->scan;
2862         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2863
2864         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2865         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2866
2867         if (iwl_is_associated(priv)) {
2868                 u16 interval = 0;
2869                 u32 extra;
2870                 u32 suspend_time = 100;
2871                 u32 scan_suspend_time = 100;
2872                 unsigned long flags;
2873
2874                 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2875
2876                 spin_lock_irqsave(&priv->lock, flags);
2877                 interval = priv->beacon_int;
2878                 spin_unlock_irqrestore(&priv->lock, flags);
2879
2880                 scan->suspend_time = 0;
2881                 scan->max_out_time = cpu_to_le32(200 * 1024);
2882                 if (!interval)
2883                         interval = suspend_time;
2884                 /*
2885                  * suspend time format:
2886                  *  0-19: beacon interval in usec (time before exec.)
2887                  * 20-23: 0
2888                  * 24-31: number of beacons (suspend between channels)
2889                  */
2890
2891                 extra = (suspend_time / interval) << 24;
2892                 scan_suspend_time = 0xFF0FFFFF &
2893                     (extra | ((suspend_time % interval) * 1024));
2894
2895                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2896                 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2897                                scan_suspend_time, interval);
2898         }
2899
2900         if (priv->scan_request->n_ssids) {
2901                 int i, p = 0;
2902                 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2903                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2904                         /* always does wildcard anyway */
2905                         if (!priv->scan_request->ssids[i].ssid_len)
2906                                 continue;
2907                         scan->direct_scan[p].id = WLAN_EID_SSID;
2908                         scan->direct_scan[p].len =
2909                                 priv->scan_request->ssids[i].ssid_len;
2910                         memcpy(scan->direct_scan[p].ssid,
2911                                priv->scan_request->ssids[i].ssid,
2912                                priv->scan_request->ssids[i].ssid_len);
2913                         n_probes++;
2914                         p++;
2915                 }
2916                 is_active = true;
2917         } else
2918                 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2919
2920         /* We don't build a direct scan probe request; the uCode will do
2921          * that based on the direct_mask added to each channel entry */
2922         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2923         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2924         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2925
2926         /* flags + rate selection */
2927
2928         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2929                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2930                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2931                 scan->good_CRC_th = 0;
2932                 band = IEEE80211_BAND_2GHZ;
2933         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2934                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2935                 /*
2936                  * If active scaning is requested but a certain channel
2937                  * is marked passive, we can do active scanning if we
2938                  * detect transmissions.
2939                  */
2940                 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2941                 band = IEEE80211_BAND_5GHZ;
2942         } else {
2943                 IWL_WARN(priv, "Invalid scan band count\n");
2944                 goto done;
2945         }
2946
2947         scan->tx_cmd.len = cpu_to_le16(
2948                         iwl_fill_probe_req(priv,
2949                                 (struct ieee80211_mgmt *)scan->data,
2950                                 priv->scan_request->ie,
2951                                 priv->scan_request->ie_len,
2952                                 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2953
2954         /* select Rx antennas */
2955         scan->flags |= iwl3945_get_antenna_flags(priv);
2956
2957         if (iwl_is_monitor_mode(priv))
2958                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2959
2960         scan->channel_count =
2961                 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2962                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2963
2964         if (scan->channel_count == 0) {
2965                 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2966                 goto done;
2967         }
2968
2969         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2970             scan->channel_count * sizeof(struct iwl3945_scan_channel);
2971         cmd.data = scan;
2972         scan->len = cpu_to_le16(cmd.len);
2973
2974         set_bit(STATUS_SCAN_HW, &priv->status);
2975         rc = iwl_send_cmd_sync(priv, &cmd);
2976         if (rc)
2977                 goto done;
2978
2979         queue_delayed_work(priv->workqueue, &priv->scan_check,
2980                            IWL_SCAN_CHECK_WATCHDOG);
2981
2982         mutex_unlock(&priv->mutex);
2983         return;
2984
2985  done:
2986         /* can not perform scan make sure we clear scanning
2987          * bits from status so next scan request can be performed.
2988          * if we dont clear scanning status bit here all next scan
2989          * will fail
2990         */
2991         clear_bit(STATUS_SCAN_HW, &priv->status);
2992         clear_bit(STATUS_SCANNING, &priv->status);
2993
2994         /* inform mac80211 scan aborted */
2995         queue_work(priv->workqueue, &priv->scan_completed);
2996         mutex_unlock(&priv->mutex);
2997 }
2998
2999 static void iwl3945_bg_up(struct work_struct *data)
3000 {
3001         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3002
3003         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3004                 return;
3005
3006         mutex_lock(&priv->mutex);
3007         __iwl3945_up(priv);
3008         mutex_unlock(&priv->mutex);
3009 }
3010
3011 static void iwl3945_bg_restart(struct work_struct *data)
3012 {
3013         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3014
3015         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3016                 return;
3017
3018         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3019                 mutex_lock(&priv->mutex);
3020                 priv->vif = NULL;
3021                 priv->is_open = 0;
3022                 mutex_unlock(&priv->mutex);
3023                 iwl3945_down(priv);
3024                 ieee80211_restart_hw(priv->hw);
3025         } else {
3026                 iwl3945_down(priv);
3027                 queue_work(priv->workqueue, &priv->up);
3028         }
3029 }
3030
3031 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3032 {
3033         struct iwl_priv *priv =
3034             container_of(data, struct iwl_priv, rx_replenish);
3035
3036         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3037                 return;
3038
3039         mutex_lock(&priv->mutex);
3040         iwl3945_rx_replenish(priv);
3041         mutex_unlock(&priv->mutex);
3042 }
3043
3044 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3045
3046 void iwl3945_post_associate(struct iwl_priv *priv)
3047 {
3048         int rc = 0;
3049         struct ieee80211_conf *conf = NULL;
3050
3051         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3052                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3053                 return;
3054         }
3055
3056
3057         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3058                         priv->assoc_id, priv->active_rxon.bssid_addr);
3059
3060         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3061                 return;
3062
3063         if (!priv->vif || !priv->is_open)
3064                 return;
3065
3066         iwl_scan_cancel_timeout(priv, 200);
3067
3068         conf = ieee80211_get_hw_conf(priv->hw);
3069
3070         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3071         iwlcore_commit_rxon(priv);
3072
3073         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3074         iwl_setup_rxon_timing(priv);
3075         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3076                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3077         if (rc)
3078                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3079                             "Attempting to continue.\n");
3080
3081         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3082
3083         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3084
3085         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3086                         priv->assoc_id, priv->beacon_int);
3087
3088         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3089                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3090         else
3091                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3092
3093         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3094                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3095                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3096                 else
3097                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3098
3099                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3100                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3101
3102         }
3103
3104         iwlcore_commit_rxon(priv);
3105
3106         switch (priv->iw_mode) {
3107         case NL80211_IFTYPE_STATION:
3108                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3109                 break;
3110
3111         case NL80211_IFTYPE_ADHOC:
3112
3113                 priv->assoc_id = 1;
3114                 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3115                 iwl3945_sync_sta(priv, IWL_STA_ID,
3116                                  (priv->band == IEEE80211_BAND_5GHZ) ?
3117                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3118                                  CMD_ASYNC);
3119                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3120                 iwl3945_send_beacon_cmd(priv);
3121
3122                 break;
3123
3124         default:
3125                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
3126                            __func__, priv->iw_mode);
3127                 break;
3128         }
3129
3130         iwl_activate_qos(priv, 0);
3131
3132         /* we have just associated, don't start scan too early */
3133         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3134 }
3135
3136 /*****************************************************************************
3137  *
3138  * mac80211 entry point functions
3139  *
3140  *****************************************************************************/
3141
3142 #define UCODE_READY_TIMEOUT     (2 * HZ)
3143
3144 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3145 {
3146         struct iwl_priv *priv = hw->priv;
3147         int ret;
3148
3149         IWL_DEBUG_MAC80211(priv, "enter\n");
3150
3151         /* we should be verifying the device is ready to be opened */
3152         mutex_lock(&priv->mutex);
3153
3154         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3155          * ucode filename and max sizes are card-specific. */
3156
3157         if (!priv->ucode_code.len) {
3158                 ret = iwl3945_read_ucode(priv);
3159                 if (ret) {
3160                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3161                         mutex_unlock(&priv->mutex);
3162                         goto out_release_irq;
3163                 }
3164         }
3165
3166         ret = __iwl3945_up(priv);
3167
3168         mutex_unlock(&priv->mutex);
3169
3170         if (ret)
3171                 goto out_release_irq;
3172
3173         IWL_DEBUG_INFO(priv, "Start UP work.\n");
3174
3175         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3176          * mac80211 will not be run successfully. */
3177         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3178                         test_bit(STATUS_READY, &priv->status),
3179                         UCODE_READY_TIMEOUT);
3180         if (!ret) {
3181                 if (!test_bit(STATUS_READY, &priv->status)) {
3182                         IWL_ERR(priv,
3183                                 "Wait for START_ALIVE timeout after %dms.\n",
3184                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3185                         ret = -ETIMEDOUT;
3186                         goto out_release_irq;
3187                 }
3188         }
3189
3190         /* ucode is running and will send rfkill notifications,
3191          * no need to poll the killswitch state anymore */
3192         cancel_delayed_work(&priv->rfkill_poll);
3193
3194         iwl_led_start(priv);
3195
3196         priv->is_open = 1;
3197         IWL_DEBUG_MAC80211(priv, "leave\n");
3198         return 0;
3199
3200 out_release_irq:
3201         priv->is_open = 0;
3202         IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3203         return ret;
3204 }
3205
3206 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3207 {
3208         struct iwl_priv *priv = hw->priv;
3209
3210         IWL_DEBUG_MAC80211(priv, "enter\n");
3211
3212         if (!priv->is_open) {
3213                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3214                 return;
3215         }
3216
3217         priv->is_open = 0;
3218
3219         if (iwl_is_ready_rf(priv)) {
3220                 /* stop mac, cancel any scan request and clear
3221                  * RXON_FILTER_ASSOC_MSK BIT
3222                  */
3223                 mutex_lock(&priv->mutex);
3224                 iwl_scan_cancel_timeout(priv, 100);
3225                 mutex_unlock(&priv->mutex);
3226         }
3227
3228         iwl3945_down(priv);
3229
3230         flush_workqueue(priv->workqueue);
3231
3232         /* start polling the killswitch state again */
3233         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3234                            round_jiffies_relative(2 * HZ));
3235
3236         IWL_DEBUG_MAC80211(priv, "leave\n");
3237 }
3238
3239 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3240 {
3241         struct iwl_priv *priv = hw->priv;
3242
3243         IWL_DEBUG_MAC80211(priv, "enter\n");
3244
3245         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3246                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3247
3248         if (iwl3945_tx_skb(priv, skb))
3249                 dev_kfree_skb_any(skb);
3250
3251         IWL_DEBUG_MAC80211(priv, "leave\n");
3252         return NETDEV_TX_OK;
3253 }
3254
3255 void iwl3945_config_ap(struct iwl_priv *priv)
3256 {
3257         int rc = 0;
3258
3259         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3260                 return;
3261
3262         /* The following should be done only at AP bring up */
3263         if (!(iwl_is_associated(priv))) {
3264
3265                 /* RXON - unassoc (to set timing command) */
3266                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3267                 iwlcore_commit_rxon(priv);
3268
3269                 /* RXON Timing */
3270                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3271                 iwl_setup_rxon_timing(priv);
3272                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3273                                       sizeof(priv->rxon_timing),
3274                                       &priv->rxon_timing);
3275                 if (rc)
3276                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3277                                         "Attempting to continue.\n");
3278
3279                 /* FIXME: what should be the assoc_id for AP? */
3280                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3281                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3282                         priv->staging_rxon.flags |=
3283                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3284                 else
3285                         priv->staging_rxon.flags &=
3286                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3287
3288                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3289                         if (priv->assoc_capability &
3290                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3291                                 priv->staging_rxon.flags |=
3292                                         RXON_FLG_SHORT_SLOT_MSK;
3293                         else
3294                                 priv->staging_rxon.flags &=
3295                                         ~RXON_FLG_SHORT_SLOT_MSK;
3296
3297                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3298                                 priv->staging_rxon.flags &=
3299                                         ~RXON_FLG_SHORT_SLOT_MSK;
3300                 }
3301                 /* restore RXON assoc */
3302                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3303                 iwlcore_commit_rxon(priv);
3304                 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3305         }
3306         iwl3945_send_beacon_cmd(priv);
3307
3308         /* FIXME - we need to add code here to detect a totally new
3309          * configuration, reset the AP, unassoc, rxon timing, assoc,
3310          * clear sta table, add BCAST sta... */
3311 }
3312
3313 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3314                                struct ieee80211_vif *vif,
3315                                struct ieee80211_sta *sta,
3316                                struct ieee80211_key_conf *key)
3317 {
3318         struct iwl_priv *priv = hw->priv;
3319         const u8 *addr;
3320         int ret = 0;
3321         u8 sta_id = IWL_INVALID_STATION;
3322         u8 static_key;
3323
3324         IWL_DEBUG_MAC80211(priv, "enter\n");
3325
3326         if (iwl3945_mod_params.sw_crypto) {
3327                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3328                 return -EOPNOTSUPP;
3329         }
3330
3331         addr = sta ? sta->addr : iwl_bcast_addr;
3332         static_key = !iwl_is_associated(priv);
3333
3334         if (!static_key) {
3335                 sta_id = iwl_find_station(priv, addr);
3336                 if (sta_id == IWL_INVALID_STATION) {
3337                         IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3338                                             addr);
3339                         return -EINVAL;
3340                 }
3341         }
3342
3343         mutex_lock(&priv->mutex);
3344         iwl_scan_cancel_timeout(priv, 100);
3345         mutex_unlock(&priv->mutex);
3346
3347         switch (cmd) {
3348         case SET_KEY:
3349                 if (static_key)
3350                         ret = iwl3945_set_static_key(priv, key);
3351                 else
3352                         ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3353                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3354                 break;
3355         case DISABLE_KEY:
3356                 if (static_key)
3357                         ret = iwl3945_remove_static_key(priv);
3358                 else
3359                         ret = iwl3945_clear_sta_key_info(priv, sta_id);
3360                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3361                 break;
3362         default:
3363                 ret = -EINVAL;
3364         }
3365
3366         IWL_DEBUG_MAC80211(priv, "leave\n");
3367
3368         return ret;
3369 }
3370
3371 /*****************************************************************************
3372  *
3373  * sysfs attributes
3374  *
3375  *****************************************************************************/
3376
3377 #ifdef CONFIG_IWLWIFI_DEBUG
3378
3379 /*
3380  * The following adds a new attribute to the sysfs representation
3381  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3382  * used for controlling the debug level.
3383  *
3384  * See the level definitions in iwl for details.
3385  *
3386  * The debug_level being managed using sysfs below is a per device debug
3387  * level that is used instead of the global debug level if it (the per
3388  * device debug level) is set.
3389  */
3390 static ssize_t show_debug_level(struct device *d,
3391                                 struct device_attribute *attr, char *buf)
3392 {
3393         struct iwl_priv *priv = dev_get_drvdata(d);
3394         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3395 }
3396 static ssize_t store_debug_level(struct device *d,
3397                                 struct device_attribute *attr,
3398                                  const char *buf, size_t count)
3399 {
3400         struct iwl_priv *priv = dev_get_drvdata(d);
3401         unsigned long val;
3402         int ret;
3403
3404         ret = strict_strtoul(buf, 0, &val);
3405         if (ret)
3406                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3407         else {
3408                 priv->debug_level = val;
3409                 if (iwl_alloc_traffic_mem(priv))
3410                         IWL_ERR(priv,
3411                                 "Not enough memory to generate traffic log\n");
3412         }
3413         return strnlen(buf, count);
3414 }
3415
3416 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3417                         show_debug_level, store_debug_level);
3418
3419 #endif /* CONFIG_IWLWIFI_DEBUG */
3420
3421 static ssize_t show_temperature(struct device *d,
3422                                 struct device_attribute *attr, char *buf)
3423 {
3424         struct iwl_priv *priv = dev_get_drvdata(d);
3425
3426         if (!iwl_is_alive(priv))
3427                 return -EAGAIN;
3428
3429         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3430 }
3431
3432 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3433
3434 static ssize_t show_tx_power(struct device *d,
3435                              struct device_attribute *attr, char *buf)
3436 {
3437         struct iwl_priv *priv = dev_get_drvdata(d);
3438         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3439 }
3440
3441 static ssize_t store_tx_power(struct device *d,
3442                               struct device_attribute *attr,
3443                               const char *buf, size_t count)
3444 {
3445         struct iwl_priv *priv = dev_get_drvdata(d);
3446         char *p = (char *)buf;
3447         u32 val;
3448
3449         val = simple_strtoul(p, &p, 10);
3450         if (p == buf)
3451                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3452         else
3453                 iwl3945_hw_reg_set_txpower(priv, val);
3454
3455         return count;
3456 }
3457
3458 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3459
3460 static ssize_t show_flags(struct device *d,
3461                           struct device_attribute *attr, char *buf)
3462 {
3463         struct iwl_priv *priv = dev_get_drvdata(d);
3464
3465         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3466 }
3467
3468 static ssize_t store_flags(struct device *d,
3469                            struct device_attribute *attr,
3470                            const char *buf, size_t count)
3471 {
3472         struct iwl_priv *priv = dev_get_drvdata(d);
3473         u32 flags = simple_strtoul(buf, NULL, 0);
3474
3475         mutex_lock(&priv->mutex);
3476         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3477                 /* Cancel any currently running scans... */
3478                 if (iwl_scan_cancel_timeout(priv, 100))
3479                         IWL_WARN(priv, "Could not cancel scan.\n");
3480                 else {
3481                         IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3482                                        flags);
3483                         priv->staging_rxon.flags = cpu_to_le32(flags);
3484                         iwlcore_commit_rxon(priv);
3485                 }
3486         }
3487         mutex_unlock(&priv->mutex);
3488
3489         return count;
3490 }
3491
3492 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3493
3494 static ssize_t show_filter_flags(struct device *d,
3495                                  struct device_attribute *attr, char *buf)
3496 {
3497         struct iwl_priv *priv = dev_get_drvdata(d);
3498
3499         return sprintf(buf, "0x%04X\n",
3500                 le32_to_cpu(priv->active_rxon.filter_flags));
3501 }
3502
3503 static ssize_t store_filter_flags(struct device *d,
3504                                   struct device_attribute *attr,
3505                                   const char *buf, size_t count)
3506 {
3507         struct iwl_priv *priv = dev_get_drvdata(d);
3508         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3509
3510         mutex_lock(&priv->mutex);
3511         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3512                 /* Cancel any currently running scans... */
3513                 if (iwl_scan_cancel_timeout(priv, 100))
3514                         IWL_WARN(priv, "Could not cancel scan.\n");
3515                 else {
3516                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3517                                        "0x%04X\n", filter_flags);
3518                         priv->staging_rxon.filter_flags =
3519                                 cpu_to_le32(filter_flags);
3520                         iwlcore_commit_rxon(priv);
3521                 }
3522         }
3523         mutex_unlock(&priv->mutex);
3524
3525         return count;
3526 }
3527
3528 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3529                    store_filter_flags);
3530
3531 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3532
3533 static ssize_t show_measurement(struct device *d,
3534                                 struct device_attribute *attr, char *buf)
3535 {
3536         struct iwl_priv *priv = dev_get_drvdata(d);
3537         struct iwl_spectrum_notification measure_report;
3538         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3539         u8 *data = (u8 *)&measure_report;
3540         unsigned long flags;
3541
3542         spin_lock_irqsave(&priv->lock, flags);
3543         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3544                 spin_unlock_irqrestore(&priv->lock, flags);
3545                 return 0;
3546         }
3547         memcpy(&measure_report, &priv->measure_report, size);
3548         priv->measurement_status = 0;
3549         spin_unlock_irqrestore(&priv->lock, flags);
3550
3551         while (size && (PAGE_SIZE - len)) {
3552                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3553                                    PAGE_SIZE - len, 1);
3554                 len = strlen(buf);
3555                 if (PAGE_SIZE - len)
3556                         buf[len++] = '\n';
3557
3558                 ofs += 16;
3559                 size -= min(size, 16U);
3560         }
3561
3562         return len;
3563 }
3564
3565 static ssize_t store_measurement(struct device *d,
3566                                  struct device_attribute *attr,
3567                                  const char *buf, size_t count)
3568 {
3569         struct iwl_priv *priv = dev_get_drvdata(d);
3570         struct ieee80211_measurement_params params = {
3571                 .channel = le16_to_cpu(priv->active_rxon.channel),
3572                 .start_time = cpu_to_le64(priv->last_tsf),
3573                 .duration = cpu_to_le16(1),
3574         };
3575         u8 type = IWL_MEASURE_BASIC;
3576         u8 buffer[32];
3577         u8 channel;
3578
3579         if (count) {
3580                 char *p = buffer;
3581                 strncpy(buffer, buf, min(sizeof(buffer), count));
3582                 channel = simple_strtoul(p, NULL, 0);
3583                 if (channel)
3584                         params.channel = channel;
3585
3586                 p = buffer;
3587                 while (*p && *p != ' ')
3588                         p++;
3589                 if (*p)
3590                         type = simple_strtoul(p + 1, NULL, 0);
3591         }
3592
3593         IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3594                        "channel %d (for '%s')\n", type, params.channel, buf);
3595         iwl3945_get_measurement(priv, &params, type);
3596
3597         return count;
3598 }
3599
3600 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3601                    show_measurement, store_measurement);
3602 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3603
3604 static ssize_t store_retry_rate(struct device *d,
3605                                 struct device_attribute *attr,
3606                                 const char *buf, size_t count)
3607 {
3608         struct iwl_priv *priv = dev_get_drvdata(d);
3609
3610         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3611         if (priv->retry_rate <= 0)
3612                 priv->retry_rate = 1;
3613
3614         return count;
3615 }
3616
3617 static ssize_t show_retry_rate(struct device *d,
3618                                struct device_attribute *attr, char *buf)
3619 {
3620         struct iwl_priv *priv = dev_get_drvdata(d);
3621         return sprintf(buf, "%d", priv->retry_rate);
3622 }
3623
3624 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3625                    store_retry_rate);
3626
3627
3628 static ssize_t show_channels(struct device *d,
3629                              struct device_attribute *attr, char *buf)
3630 {
3631         /* all this shit doesn't belong into sysfs anyway */
3632         return 0;
3633 }
3634
3635 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3636
3637 static ssize_t show_statistics(struct device *d,
3638                                struct device_attribute *attr, char *buf)
3639 {
3640         struct iwl_priv *priv = dev_get_drvdata(d);
3641         u32 size = sizeof(struct iwl3945_notif_statistics);
3642         u32 len = 0, ofs = 0;
3643         u8 *data = (u8 *)&priv->statistics_39;
3644         int rc = 0;
3645
3646         if (!iwl_is_alive(priv))
3647                 return -EAGAIN;
3648
3649         mutex_lock(&priv->mutex);
3650         rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3651         mutex_unlock(&priv->mutex);
3652
3653         if (rc) {
3654                 len = sprintf(buf,
3655                               "Error sending statistics request: 0x%08X\n", rc);
3656                 return len;
3657         }
3658
3659         while (size && (PAGE_SIZE - len)) {
3660                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3661                                    PAGE_SIZE - len, 1);
3662                 len = strlen(buf);
3663                 if (PAGE_SIZE - len)
3664                         buf[len++] = '\n';
3665
3666                 ofs += 16;
3667                 size -= min(size, 16U);
3668         }
3669
3670         return len;
3671 }
3672
3673 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3674
3675 static ssize_t show_antenna(struct device *d,
3676                             struct device_attribute *attr, char *buf)
3677 {
3678         struct iwl_priv *priv = dev_get_drvdata(d);
3679
3680         if (!iwl_is_alive(priv))
3681                 return -EAGAIN;
3682
3683         return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3684 }
3685
3686 static ssize_t store_antenna(struct device *d,
3687                              struct device_attribute *attr,
3688                              const char *buf, size_t count)
3689 {
3690         struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3691         int ant;
3692
3693         if (count == 0)
3694                 return 0;
3695
3696         if (sscanf(buf, "%1i", &ant) != 1) {
3697                 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3698                 return count;
3699         }
3700
3701         if ((ant >= 0) && (ant <= 2)) {
3702                 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3703                 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3704         } else
3705                 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3706
3707
3708         return count;
3709 }
3710
3711 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3712
3713 static ssize_t show_status(struct device *d,
3714                            struct device_attribute *attr, char *buf)
3715 {
3716         struct iwl_priv *priv = dev_get_drvdata(d);
3717         if (!iwl_is_alive(priv))
3718                 return -EAGAIN;
3719         return sprintf(buf, "0x%08x\n", (int)priv->status);
3720 }
3721
3722 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3723
3724 static ssize_t dump_error_log(struct device *d,
3725                               struct device_attribute *attr,
3726                               const char *buf, size_t count)
3727 {
3728         struct iwl_priv *priv = dev_get_drvdata(d);
3729         char *p = (char *)buf;
3730
3731         if (p[0] == '1')
3732                 iwl3945_dump_nic_error_log(priv);
3733
3734         return strnlen(buf, count);
3735 }
3736
3737 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3738
3739 /*****************************************************************************
3740  *
3741  * driver setup and tear down
3742  *
3743  *****************************************************************************/
3744
3745 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3746 {
3747         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3748
3749         init_waitqueue_head(&priv->wait_command_queue);
3750
3751         INIT_WORK(&priv->up, iwl3945_bg_up);
3752         INIT_WORK(&priv->restart, iwl3945_bg_restart);
3753         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3754         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3755         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3756         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3757         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3758         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3759         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3760         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3761         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3762
3763         iwl3945_hw_setup_deferred_work(priv);
3764
3765         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3766                      iwl3945_irq_tasklet, (unsigned long)priv);
3767 }
3768
3769 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3770 {
3771         iwl3945_hw_cancel_deferred_work(priv);
3772
3773         cancel_delayed_work_sync(&priv->init_alive_start);
3774         cancel_delayed_work(&priv->scan_check);
3775         cancel_delayed_work(&priv->alive_start);
3776         cancel_work_sync(&priv->beacon_update);
3777 }
3778
3779 static struct attribute *iwl3945_sysfs_entries[] = {
3780         &dev_attr_antenna.attr,
3781         &dev_attr_channels.attr,
3782         &dev_attr_dump_errors.attr,
3783         &dev_attr_flags.attr,
3784         &dev_attr_filter_flags.attr,
3785 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3786         &dev_attr_measurement.attr,
3787 #endif
3788         &dev_attr_retry_rate.attr,
3789         &dev_attr_statistics.attr,
3790         &dev_attr_status.attr,
3791         &dev_attr_temperature.attr,
3792         &dev_attr_tx_power.attr,
3793 #ifdef CONFIG_IWLWIFI_DEBUG
3794         &dev_attr_debug_level.attr,
3795 #endif
3796         NULL
3797 };
3798
3799 static struct attribute_group iwl3945_attribute_group = {
3800         .name = NULL,           /* put in device directory */
3801         .attrs = iwl3945_sysfs_entries,
3802 };
3803
3804 static struct ieee80211_ops iwl3945_hw_ops = {
3805         .tx = iwl3945_mac_tx,
3806         .start = iwl3945_mac_start,
3807         .stop = iwl3945_mac_stop,
3808         .add_interface = iwl_mac_add_interface,
3809         .remove_interface = iwl_mac_remove_interface,
3810         .config = iwl_mac_config,
3811         .configure_filter = iwl_configure_filter,
3812         .set_key = iwl3945_mac_set_key,
3813         .get_tx_stats = iwl_mac_get_tx_stats,
3814         .conf_tx = iwl_mac_conf_tx,
3815         .reset_tsf = iwl_mac_reset_tsf,
3816         .bss_info_changed = iwl_bss_info_changed,
3817         .hw_scan = iwl_mac_hw_scan
3818 };
3819
3820 static int iwl3945_init_drv(struct iwl_priv *priv)
3821 {
3822         int ret;
3823         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3824
3825         priv->retry_rate = 1;
3826         priv->ibss_beacon = NULL;
3827
3828         spin_lock_init(&priv->sta_lock);
3829         spin_lock_init(&priv->hcmd_lock);
3830
3831         INIT_LIST_HEAD(&priv->free_frames);
3832
3833         mutex_init(&priv->mutex);
3834
3835         /* Clear the driver's (not device's) station table */
3836         iwl_clear_stations_table(priv);
3837
3838         priv->ieee_channels = NULL;
3839         priv->ieee_rates = NULL;
3840         priv->band = IEEE80211_BAND_2GHZ;
3841
3842         priv->iw_mode = NL80211_IFTYPE_STATION;
3843
3844         iwl_reset_qos(priv);
3845
3846         priv->qos_data.qos_active = 0;
3847         priv->qos_data.qos_cap.val = 0;
3848
3849         priv->rates_mask = IWL_RATES_MASK;
3850         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3851
3852         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3853                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3854                          eeprom->version);
3855                 ret = -EINVAL;
3856                 goto err;
3857         }
3858         ret = iwl_init_channel_map(priv);
3859         if (ret) {
3860                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3861                 goto err;
3862         }
3863
3864         /* Set up txpower settings in driver for all channels */
3865         if (iwl3945_txpower_set_from_eeprom(priv)) {
3866                 ret = -EIO;
3867                 goto err_free_channel_map;
3868         }
3869
3870         ret = iwlcore_init_geos(priv);
3871         if (ret) {
3872                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3873                 goto err_free_channel_map;
3874         }
3875         iwl3945_init_hw_rates(priv, priv->ieee_rates);
3876
3877         return 0;
3878
3879 err_free_channel_map:
3880         iwl_free_channel_map(priv);
3881 err:
3882         return ret;
3883 }
3884
3885 static int iwl3945_setup_mac(struct iwl_priv *priv)
3886 {
3887         int ret;
3888         struct ieee80211_hw *hw = priv->hw;
3889
3890         hw->rate_control_algorithm = "iwl-3945-rs";
3891         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3892
3893         /* Tell mac80211 our characteristics */
3894         hw->flags = IEEE80211_HW_SIGNAL_DBM |
3895                     IEEE80211_HW_NOISE_DBM |
3896                     IEEE80211_HW_SPECTRUM_MGMT;
3897
3898         if (!priv->cfg->broken_powersave)
3899                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3900                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3901
3902         hw->wiphy->interface_modes =
3903                 BIT(NL80211_IFTYPE_STATION) |
3904                 BIT(NL80211_IFTYPE_ADHOC);
3905
3906         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
3907                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
3908
3909         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3910         /* we create the 802.11 header and a zero-length SSID element */
3911         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3912
3913         /* Default value; 4 EDCA QOS priorities */
3914         hw->queues = 4;
3915
3916         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3917                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3918                         &priv->bands[IEEE80211_BAND_2GHZ];
3919
3920         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3921                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3922                         &priv->bands[IEEE80211_BAND_5GHZ];
3923
3924         ret = ieee80211_register_hw(priv->hw);
3925         if (ret) {
3926                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3927                 return ret;
3928         }
3929         priv->mac80211_registered = 1;
3930
3931         return 0;
3932 }
3933
3934 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3935 {
3936         int err = 0;
3937         struct iwl_priv *priv;
3938         struct ieee80211_hw *hw;
3939         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3940         struct iwl3945_eeprom *eeprom;
3941         unsigned long flags;
3942
3943         /***********************
3944          * 1. Allocating HW data
3945          * ********************/
3946
3947         /* mac80211 allocates memory for this device instance, including
3948          *   space for this driver's private structure */
3949         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3950         if (hw == NULL) {
3951                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3952                 err = -ENOMEM;
3953                 goto out;
3954         }
3955         priv = hw->priv;
3956         SET_IEEE80211_DEV(hw, &pdev->dev);
3957
3958         /*
3959          * Disabling hardware scan means that mac80211 will perform scans
3960          * "the hard way", rather than using device's scan.
3961          */
3962         if (iwl3945_mod_params.disable_hw_scan) {
3963                 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3964                 iwl3945_hw_ops.hw_scan = NULL;
3965         }
3966
3967
3968         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3969         priv->cfg = cfg;
3970         priv->pci_dev = pdev;
3971         priv->inta_mask = CSR_INI_SET_MASK;
3972
3973 #ifdef CONFIG_IWLWIFI_DEBUG
3974         atomic_set(&priv->restrict_refcnt, 0);
3975 #endif
3976         if (iwl_alloc_traffic_mem(priv))
3977                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3978
3979         /***************************
3980          * 2. Initializing PCI bus
3981          * *************************/
3982         if (pci_enable_device(pdev)) {
3983                 err = -ENODEV;
3984                 goto out_ieee80211_free_hw;
3985         }
3986
3987         pci_set_master(pdev);
3988
3989         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3990         if (!err)
3991                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3992         if (err) {
3993                 IWL_WARN(priv, "No suitable DMA available.\n");
3994                 goto out_pci_disable_device;
3995         }
3996
3997         pci_set_drvdata(pdev, priv);
3998         err = pci_request_regions(pdev, DRV_NAME);
3999         if (err)
4000                 goto out_pci_disable_device;
4001
4002         /***********************
4003          * 3. Read REV Register
4004          * ********************/
4005         priv->hw_base = pci_iomap(pdev, 0, 0);
4006         if (!priv->hw_base) {
4007                 err = -ENODEV;
4008                 goto out_pci_release_regions;
4009         }
4010
4011         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4012                         (unsigned long long) pci_resource_len(pdev, 0));
4013         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4014
4015         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4016          * PCI Tx retries from interfering with C3 CPU state */
4017         pci_write_config_byte(pdev, 0x41, 0x00);
4018
4019         /* these spin locks will be used in apm_ops.init and EEPROM access
4020          * we should init now
4021          */
4022         spin_lock_init(&priv->reg_lock);
4023         spin_lock_init(&priv->lock);
4024
4025         /***********************
4026          * 4. Read EEPROM
4027          * ********************/
4028
4029         /* Read the EEPROM */
4030         err = iwl_eeprom_init(priv);
4031         if (err) {
4032                 IWL_ERR(priv, "Unable to init EEPROM\n");
4033                 goto out_iounmap;
4034         }
4035         /* MAC Address location in EEPROM same for 3945/4965 */
4036         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4037         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4038         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4039         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4040
4041         /***********************
4042          * 5. Setup HW Constants
4043          * ********************/
4044         /* Device-specific setup */
4045         if (iwl3945_hw_set_hw_params(priv)) {
4046                 IWL_ERR(priv, "failed to set hw settings\n");
4047                 goto out_eeprom_free;
4048         }
4049
4050         /***********************
4051          * 6. Setup priv
4052          * ********************/
4053
4054         err = iwl3945_init_drv(priv);
4055         if (err) {
4056                 IWL_ERR(priv, "initializing driver failed\n");
4057                 goto out_unset_hw_params;
4058         }
4059
4060         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4061                 priv->cfg->name);
4062
4063         /***********************
4064          * 7. Setup Services
4065          * ********************/
4066
4067         spin_lock_irqsave(&priv->lock, flags);
4068         iwl_disable_interrupts(priv);
4069         spin_unlock_irqrestore(&priv->lock, flags);
4070
4071         pci_enable_msi(priv->pci_dev);
4072
4073         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4074                           IRQF_SHARED, DRV_NAME, priv);
4075         if (err) {
4076                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4077                 goto out_disable_msi;
4078         }
4079
4080         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4081         if (err) {
4082                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4083                 goto out_release_irq;
4084         }
4085
4086         iwl_set_rxon_channel(priv,
4087                              &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4088         iwl3945_setup_deferred_work(priv);
4089         iwl3945_setup_rx_handlers(priv);
4090         iwl_power_initialize(priv);
4091
4092         /*********************************
4093          * 8. Setup and Register mac80211
4094          * *******************************/
4095
4096         iwl_enable_interrupts(priv);
4097
4098         err = iwl3945_setup_mac(priv);
4099         if (err)
4100                 goto  out_remove_sysfs;
4101
4102         err = iwl_dbgfs_register(priv, DRV_NAME);
4103         if (err)
4104                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4105
4106         /* Start monitoring the killswitch */
4107         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4108                            2 * HZ);
4109
4110         return 0;
4111
4112  out_remove_sysfs:
4113         destroy_workqueue(priv->workqueue);
4114         priv->workqueue = NULL;
4115         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4116  out_release_irq:
4117         free_irq(priv->pci_dev->irq, priv);
4118  out_disable_msi:
4119         pci_disable_msi(priv->pci_dev);
4120         iwlcore_free_geos(priv);
4121         iwl_free_channel_map(priv);
4122  out_unset_hw_params:
4123         iwl3945_unset_hw_params(priv);
4124  out_eeprom_free:
4125         iwl_eeprom_free(priv);
4126  out_iounmap:
4127         pci_iounmap(pdev, priv->hw_base);
4128  out_pci_release_regions:
4129         pci_release_regions(pdev);
4130  out_pci_disable_device:
4131         pci_set_drvdata(pdev, NULL);
4132         pci_disable_device(pdev);
4133  out_ieee80211_free_hw:
4134         iwl_free_traffic_mem(priv);
4135         ieee80211_free_hw(priv->hw);
4136  out:
4137         return err;
4138 }
4139
4140 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4141 {
4142         struct iwl_priv *priv = pci_get_drvdata(pdev);
4143         unsigned long flags;
4144
4145         if (!priv)
4146                 return;
4147
4148         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4149
4150         iwl_dbgfs_unregister(priv);
4151
4152         set_bit(STATUS_EXIT_PENDING, &priv->status);
4153
4154         if (priv->mac80211_registered) {
4155                 ieee80211_unregister_hw(priv->hw);
4156                 priv->mac80211_registered = 0;
4157         } else {
4158                 iwl3945_down(priv);
4159         }
4160
4161         /*
4162          * Make sure device is reset to low power before unloading driver.
4163          * This may be redundant with iwl_down(), but there are paths to
4164          * run iwl_down() without calling apm_ops.stop(), and there are
4165          * paths to avoid running iwl_down() at all before leaving driver.
4166          * This (inexpensive) call *makes sure* device is reset.
4167          */
4168         priv->cfg->ops->lib->apm_ops.stop(priv);
4169
4170         /* make sure we flush any pending irq or
4171          * tasklet for the driver
4172          */
4173         spin_lock_irqsave(&priv->lock, flags);
4174         iwl_disable_interrupts(priv);
4175         spin_unlock_irqrestore(&priv->lock, flags);
4176
4177         iwl_synchronize_irq(priv);
4178
4179         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4180
4181         cancel_delayed_work_sync(&priv->rfkill_poll);
4182
4183         iwl3945_dealloc_ucode_pci(priv);
4184
4185         if (priv->rxq.bd)
4186                 iwl3945_rx_queue_free(priv, &priv->rxq);
4187         iwl3945_hw_txq_ctx_free(priv);
4188
4189         iwl3945_unset_hw_params(priv);
4190         iwl_clear_stations_table(priv);
4191
4192         /*netif_stop_queue(dev); */
4193         flush_workqueue(priv->workqueue);
4194
4195         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4196          * priv->workqueue... so we can't take down the workqueue
4197          * until now... */
4198         destroy_workqueue(priv->workqueue);
4199         priv->workqueue = NULL;
4200         iwl_free_traffic_mem(priv);
4201
4202         free_irq(pdev->irq, priv);
4203         pci_disable_msi(pdev);
4204
4205         pci_iounmap(pdev, priv->hw_base);
4206         pci_release_regions(pdev);
4207         pci_disable_device(pdev);
4208         pci_set_drvdata(pdev, NULL);
4209
4210         iwl_free_channel_map(priv);
4211         iwlcore_free_geos(priv);
4212         kfree(priv->scan);
4213         if (priv->ibss_beacon)
4214                 dev_kfree_skb(priv->ibss_beacon);
4215
4216         ieee80211_free_hw(priv->hw);
4217 }
4218
4219
4220 /*****************************************************************************
4221  *
4222  * driver and module entry point
4223  *
4224  *****************************************************************************/
4225
4226 static struct pci_driver iwl3945_driver = {
4227         .name = DRV_NAME,
4228         .id_table = iwl3945_hw_card_ids,
4229         .probe = iwl3945_pci_probe,
4230         .remove = __devexit_p(iwl3945_pci_remove),
4231 #ifdef CONFIG_PM
4232         .suspend = iwl_pci_suspend,
4233         .resume = iwl_pci_resume,
4234 #endif
4235 };
4236
4237 static int __init iwl3945_init(void)
4238 {
4239
4240         int ret;
4241         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4242         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4243
4244         ret = iwl3945_rate_control_register();
4245         if (ret) {
4246                 printk(KERN_ERR DRV_NAME
4247                        "Unable to register rate control algorithm: %d\n", ret);
4248                 return ret;
4249         }
4250
4251         ret = pci_register_driver(&iwl3945_driver);
4252         if (ret) {
4253                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4254                 goto error_register;
4255         }
4256
4257         return ret;
4258
4259 error_register:
4260         iwl3945_rate_control_unregister();
4261         return ret;
4262 }
4263
4264 static void __exit iwl3945_exit(void)
4265 {
4266         pci_unregister_driver(&iwl3945_driver);
4267         iwl3945_rate_control_unregister();
4268 }
4269
4270 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4271
4272 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4273 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4274 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4275 MODULE_PARM_DESC(swcrypto,
4276                  "using software crypto (default 1 [software])\n");
4277 #ifdef CONFIG_IWLWIFI_DEBUG
4278 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4279 MODULE_PARM_DESC(debug, "debug output mask");
4280 #endif
4281 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4282                    int, S_IRUGO);
4283 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4284 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4285 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4286
4287 module_exit(iwl3945_exit);
4288 module_init(iwl3945_init);