drivers/net/wireless/iwlwifi/iwl3945-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2010 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/slab.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/sched.h>
  38 #include <linux/skbuff.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/wireless.h>
  41 #include <linux/firmware.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/if_arp.h>
  44
  45 #include <net/ieee80211_radiotap.h>
  46 #include <net/mac80211.h>
  47
  48 #include <asm/div64.h>
  49
  50 #define DRV_NAME        "iwl3945"
  51
  52 #include "iwl-fh.h"
  53 #include "iwl-3945-fh.h"
  54 #include "iwl-commands.h"
  55 #include "iwl-sta.h"
  56 #include "iwl-3945.h"
  57 #include "iwl-core.h"
  58 #include "iwl-helpers.h"
  59 #include "iwl-dev.h"
  60 #include "iwl-spectrum.h"
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  */
  65
  66 #define DRV_DESCRIPTION \
  67 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 /*
  76  * add "s" to indicate spectrum measurement included.
  77  * we add it here to be consistent with previous releases in which
  78  * this was configurable.
  79  */
  80 #define DRV_VERSION  IWLWIFI_VERSION VD "s"
  81 #define DRV_COPYRIGHT   "Copyright(c) 2003-2010 Intel Corporation"
  82 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  87 MODULE_LICENSE("GPL");
  88
  89  /* module parameters */
  90 struct iwl_mod_params iwl3945_mod_params = {
  91         .sw_crypto = 1,
  92         .restart_fw = 1,
  93         /* the rest are 0 by default */
  94 };
  95
  96 /**
  97  * iwl3945_get_antenna_flags - Get antenna flags for RXON command
  98  * @priv: eeprom and antenna fields are used to determine antenna flags
  99  *
 100  * priv->eeprom39  is used to determine if antenna AUX/MAIN are reversed
 101  * iwl3945_mod_params.antenna specifies the antenna diversity mode:
 102  *
 103  * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
 104  * IWL_ANTENNA_MAIN      - Force MAIN antenna
 105  * IWL_ANTENNA_AUX       - Force AUX antenna
 106  */
 107 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
 108 {
 109         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
 110
 111         switch (iwl3945_mod_params.antenna) {
 112         case IWL_ANTENNA_DIVERSITY:
 113                 return 0;
 114
 115         case IWL_ANTENNA_MAIN:
 116                 if (eeprom->antenna_switch_type)
 117                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 118                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 119
 120         case IWL_ANTENNA_AUX:
 121                 if (eeprom->antenna_switch_type)
 122                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 123                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 124         }
 125
 126         /* bad antenna selector value */
 127         IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
 128                 iwl3945_mod_params.antenna);
 129
 130         return 0;               /* "diversity" is default if error */
 131 }
 132
 133 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
 134                                    struct ieee80211_key_conf *keyconf,
 135                                    u8 sta_id)
 136 {
 137         unsigned long flags;
 138         __le16 key_flags = 0;
 139         int ret;
 140
 141         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
 142         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
 143
 144         if (sta_id == priv->hw_params.bcast_sta_id)
 145                 key_flags |= STA_KEY_MULTICAST_MSK;
 146
 147         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 148         keyconf->hw_key_idx = keyconf->keyidx;
 149         key_flags &= ~STA_KEY_FLG_INVALID;
 150
 151         spin_lock_irqsave(&priv->sta_lock, flags);
 152         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
 153         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
 154         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
 155                keyconf->keylen);
 156
 157         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
 158                keyconf->keylen);
 159
 160         if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
 161                         == STA_KEY_FLG_NO_ENC)
 162                 priv->stations[sta_id].sta.key.key_offset =
 163                                  iwl_get_free_ucode_key_index(priv);
 164         /* else, we are overriding an existing key => no need to allocated room
 165         * in uCode. */
 166
 167         WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
 168                 "no space for a new key");
 169
 170         priv->stations[sta_id].sta.key.key_flags = key_flags;
 171         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 172         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 173
 174         IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
 175
 176         ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
 177
 178         spin_unlock_irqrestore(&priv->sta_lock, flags);
 179
 180         return ret;
 181 }
 182
 183 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
 184                                   struct ieee80211_key_conf *keyconf,
 185                                   u8 sta_id)
 186 {
 187         return -EOPNOTSUPP;
 188 }
 189
 190 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
 191                                   struct ieee80211_key_conf *keyconf,
 192                                   u8 sta_id)
 193 {
 194         return -EOPNOTSUPP;
 195 }
 196
 197 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
 198 {
 199         unsigned long flags;
 200
 201         spin_lock_irqsave(&priv->sta_lock, flags);
 202         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
 203         memset(&priv->stations[sta_id].sta.key, 0,
 204                 sizeof(struct iwl4965_keyinfo));
 205         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
 206         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 207         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 208         spin_unlock_irqrestore(&priv->sta_lock, flags);
 209
 210         IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
 211         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
 212         return 0;
 213 }
 214
 215 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
 216                         struct ieee80211_key_conf *keyconf, u8 sta_id)
 217 {
 218         int ret = 0;
 219
 220         keyconf->hw_key_idx = HW_KEY_DYNAMIC;
 221
 222         switch (keyconf->alg) {
 223         case ALG_CCMP:
 224                 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
 225                 break;
 226         case ALG_TKIP:
 227                 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
 228                 break;
 229         case ALG_WEP:
 230                 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
 231                 break;
 232         default:
 233                 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
 234                 ret = -EINVAL;
 235         }
 236
 237         IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
 238                       keyconf->alg, keyconf->keylen, keyconf->keyidx,
 239                       sta_id, ret);
 240
 241         return ret;
 242 }
 243
 244 static int iwl3945_remove_static_key(struct iwl_priv *priv)
 245 {
 246         int ret = -EOPNOTSUPP;
 247
 248         return ret;
 249 }
 250
 251 static int iwl3945_set_static_key(struct iwl_priv *priv,
 252                                 struct ieee80211_key_conf *key)
 253 {
 254         if (key->alg == ALG_WEP)
 255                 return -EOPNOTSUPP;
 256
 257         IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
 258         return -EINVAL;
 259 }
 260
 261 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
 262 {
 263         struct list_head *element;
 264
 265         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 266                        priv->frames_count);
 267
 268         while (!list_empty(&priv->free_frames)) {
 269                 element = priv->free_frames.next;
 270                 list_del(element);
 271                 kfree(list_entry(element, struct iwl3945_frame, list));
 272                 priv->frames_count--;
 273         }
 274
 275         if (priv->frames_count) {
 276                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 277                             priv->frames_count);
 278                 priv->frames_count = 0;
 279         }
 280 }
 281
 282 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
 283 {
 284         struct iwl3945_frame *frame;
 285         struct list_head *element;
 286         if (list_empty(&priv->free_frames)) {
 287                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 288                 if (!frame) {
 289                         IWL_ERR(priv, "Could not allocate frame!\n");
 290                         return NULL;
 291                 }
 292
 293                 priv->frames_count++;
 294                 return frame;
 295         }
 296
 297         element = priv->free_frames.next;
 298         list_del(element);
 299         return list_entry(element, struct iwl3945_frame, list);
 300 }
 301
 302 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
 303 {
 304         memset(frame, 0, sizeof(*frame));
 305         list_add(&frame->list, &priv->free_frames);
 306 }
 307
 308 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
 309                                 struct ieee80211_hdr *hdr,
 310                                 int left)
 311 {
 312
 313         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 314             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 315              (priv->iw_mode != NL80211_IFTYPE_AP)))
 316                 return 0;
 317
 318         if (priv->ibss_beacon->len > left)
 319                 return 0;
 320
 321         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 322
 323         return priv->ibss_beacon->len;
 324 }
 325
 326 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
 327 {
 328         struct iwl3945_frame *frame;
 329         unsigned int frame_size;
 330         int rc;
 331         u8 rate;
 332
 333         frame = iwl3945_get_free_frame(priv);
 334
 335         if (!frame) {
 336                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 337                           "command.\n");
 338                 return -ENOMEM;
 339         }
 340
 341         rate = iwl_rate_get_lowest_plcp(priv);
 342
 343         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
 344
 345         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 346                               &frame->u.cmd[0]);
 347
 348         iwl3945_free_frame(priv, frame);
 349
 350         return rc;
 351 }
 352
 353 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
 354 {
 355         if (priv->shared_virt)
 356                 dma_free_coherent(&priv->pci_dev->dev,
 357                                   sizeof(struct iwl3945_shared),
 358                                   priv->shared_virt,
 359                                   priv->shared_phys);
 360 }
 361
 362 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
 363                                       struct ieee80211_tx_info *info,
 364                                       struct iwl_device_cmd *cmd,
 365                                       struct sk_buff *skb_frag,
 366                                       int sta_id)
 367 {
 368         struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 369         struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
 370
 371         switch (keyinfo->alg) {
 372         case ALG_CCMP:
 373                 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
 374                 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
 375                 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
 376                 break;
 377
 378         case ALG_TKIP:
 379                 break;
 380
 381         case ALG_WEP:
 382                 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
 383                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
 384
 385                 if (keyinfo->keylen == 13)
 386                         tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
 387
 388                 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
 389
 390                 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
 391                              "with key %d\n", info->control.hw_key->hw_key_idx);
 392                 break;
 393
 394         default:
 395                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
 396                 break;
 397         }
 398 }
 399
 400 /*
 401  * handle build REPLY_TX command notification.
 402  */
 403 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
 404                                   struct iwl_device_cmd *cmd,
 405                                   struct ieee80211_tx_info *info,
 406                                   struct ieee80211_hdr *hdr, u8 std_id)
 407 {
 408         struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 409         __le32 tx_flags = tx_cmd->tx_flags;
 410         __le16 fc = hdr->frame_control;
 411
 412         tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 413         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 414                 tx_flags |= TX_CMD_FLG_ACK_MSK;
 415                 if (ieee80211_is_mgmt(fc))
 416                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 417                 if (ieee80211_is_probe_resp(fc) &&
 418                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
 419                         tx_flags |= TX_CMD_FLG_TSF_MSK;
 420         } else {
 421                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
 422                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 423         }
 424
 425         tx_cmd->sta_id = std_id;
 426         if (ieee80211_has_morefrags(fc))
 427                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
 428
 429         if (ieee80211_is_data_qos(fc)) {
 430                 u8 *qc = ieee80211_get_qos_ctl(hdr);
 431                 tx_cmd->tid_tspec = qc[0] & 0xf;
 432                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
 433         } else {
 434                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 435         }
 436
 437         priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
 438
 439         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
 440                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
 441
 442         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
 443         if (ieee80211_is_mgmt(fc)) {
 444                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
 445                         tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
 446                 else
 447                         tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
 448         } else {
 449                 tx_cmd->timeout.pm_frame_timeout = 0;
 450         }
 451
 452         tx_cmd->driver_txop = 0;
 453         tx_cmd->tx_flags = tx_flags;
 454         tx_cmd->next_frame_len = 0;
 455 }
 456
 457 /*
 458  * start REPLY_TX command process
 459  */
 460 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 461 {
 462         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 463         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 464         struct iwl3945_tx_cmd *tx_cmd;
 465         struct iwl_tx_queue *txq = NULL;
 466         struct iwl_queue *q = NULL;
 467         struct iwl_device_cmd *out_cmd;
 468         struct iwl_cmd_meta *out_meta;
 469         dma_addr_t phys_addr;
 470         dma_addr_t txcmd_phys;
 471         int txq_id = skb_get_queue_mapping(skb);
 472         u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
 473         u8 id;
 474         u8 unicast;
 475         u8 sta_id;
 476         u8 tid = 0;
 477         u16 seq_number = 0;
 478         __le16 fc;
 479         u8 wait_write_ptr = 0;
 480         u8 *qc = NULL;
 481         unsigned long flags;
 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         iwl_txq_update_write_ptr(priv, txq);
 667         spin_unlock_irqrestore(&priv->lock, flags);
 668
 669         if ((iwl_queue_space(q) < q->high_mark)
 670             && priv->mac80211_registered) {
 671                 if (wait_write_ptr) {
 672                         spin_lock_irqsave(&priv->lock, flags);
 673                         txq->need_update = 1;
 674                         iwl_txq_update_write_ptr(priv, txq);
 675                         spin_unlock_irqrestore(&priv->lock, flags);
 676                 }
 677
 678                 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
 679         }
 680
 681         return 0;
 682
 683 drop_unlock:
 684         spin_unlock_irqrestore(&priv->lock, flags);
 685 drop:
 686         return -1;
 687 }
 688
 689 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 690 #define BEACON_TIME_MASK_HIGH   0xFF000000
 691 #define TIME_UNIT               1024
 692
 693 /*
 694  * extended beacon time format
 695  * time in usec will be changed into a 32-bit value in 8:24 format
 696  * the high 1 byte is the beacon counts
 697  * the lower 3 bytes is the time in usec within one beacon interval
 698  */
 699
 700 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
 701 {
 702         u32 quot;
 703         u32 rem;
 704         u32 interval = beacon_interval * 1024;
 705
 706         if (!interval || !usec)
 707                 return 0;
 708
 709         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 710         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 711
 712         return (quot << 24) + rem;
 713 }
 714
 715 /* base is usually what we get from ucode with each received frame,
 716  * the same as HW timer counter counting down
 717  */
 718
 719 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 720 {
 721         u32 base_low = base & BEACON_TIME_MASK_LOW;
 722         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 723         u32 interval = beacon_interval * TIME_UNIT;
 724         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 725             (addon & BEACON_TIME_MASK_HIGH);
 726
 727         if (base_low > addon_low)
 728                 res += base_low - addon_low;
 729         else if (base_low < addon_low) {
 730                 res += interval + base_low - addon_low;
 731                 res += (1 << 24);
 732         } else
 733                 res += (1 << 24);
 734
 735         return cpu_to_le32(res);
 736 }
 737
 738 static int iwl3945_get_measurement(struct iwl_priv *priv,
 739                                struct ieee80211_measurement_params *params,
 740                                u8 type)
 741 {
 742         struct iwl_spectrum_cmd spectrum;
 743         struct iwl_rx_packet *pkt;
 744         struct iwl_host_cmd cmd = {
 745                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 746                 .data = (void *)&spectrum,
 747                 .flags = CMD_WANT_SKB,
 748         };
 749         u32 add_time = le64_to_cpu(params->start_time);
 750         int rc;
 751         int spectrum_resp_status;
 752         int duration = le16_to_cpu(params->duration);
 753
 754         if (iwl_is_associated(priv))
 755                 add_time =
 756                     iwl3945_usecs_to_beacons(
 757                         le64_to_cpu(params->start_time) - priv->last_tsf,
 758                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 759
 760         memset(&spectrum, 0, sizeof(spectrum));
 761
 762         spectrum.channel_count = cpu_to_le16(1);
 763         spectrum.flags =
 764             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 765         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 766         cmd.len = sizeof(spectrum);
 767         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 768
 769         if (iwl_is_associated(priv))
 770                 spectrum.start_time =
 771                     iwl3945_add_beacon_time(priv->last_beacon_time,
 772                                 add_time,
 773                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 774         else
 775                 spectrum.start_time = 0;
 776
 777         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 778         spectrum.channels[0].channel = params->channel;
 779         spectrum.channels[0].type = type;
 780         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 781                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 782                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 783
 784         rc = iwl_send_cmd_sync(priv, &cmd);
 785         if (rc)
 786                 return rc;
 787
 788         pkt = (struct iwl_rx_packet *)cmd.reply_page;
 789         if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 790                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
 791                 rc = -EIO;
 792         }
 793
 794         spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
 795         switch (spectrum_resp_status) {
 796         case 0:         /* Command will be handled */
 797                 if (pkt->u.spectrum.id != 0xff) {
 798                         IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
 799                                                 pkt->u.spectrum.id);
 800                         priv->measurement_status &= ~MEASUREMENT_READY;
 801                 }
 802                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 803                 rc = 0;
 804                 break;
 805
 806         case 1:         /* Command will not be handled */
 807                 rc = -EAGAIN;
 808                 break;
 809         }
 810
 811         iwl_free_pages(priv, cmd.reply_page);
 812
 813         return rc;
 814 }
 815
 816 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
 817                                struct iwl_rx_mem_buffer *rxb)
 818 {
 819         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 820         struct iwl_alive_resp *palive;
 821         struct delayed_work *pwork;
 822
 823         palive = &pkt->u.alive_frame;
 824
 825         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 826                        "0x%01X 0x%01X\n",
 827                        palive->is_valid, palive->ver_type,
 828                        palive->ver_subtype);
 829
 830         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 831                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 832                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
 833                        sizeof(struct iwl_alive_resp));
 834                 pwork = &priv->init_alive_start;
 835         } else {
 836                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 837                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 838                        sizeof(struct iwl_alive_resp));
 839                 pwork = &priv->alive_start;
 840                 iwl3945_disable_events(priv);
 841         }
 842
 843         /* We delay the ALIVE response by 5ms to
 844          * give the HW RF Kill time to activate... */
 845         if (palive->is_valid == UCODE_VALID_OK)
 846                 queue_delayed_work(priv->workqueue, pwork,
 847                                    msecs_to_jiffies(5));
 848         else
 849                 IWL_WARN(priv, "uCode did not respond OK.\n");
 850 }
 851
 852 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
 853                                  struct iwl_rx_mem_buffer *rxb)
 854 {
 855 #ifdef CONFIG_IWLWIFI_DEBUG
 856         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 857 #endif
 858
 859         IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
 860         return;
 861 }
 862
 863 static void iwl3945_bg_beacon_update(struct work_struct *work)
 864 {
 865         struct iwl_priv *priv =
 866                 container_of(work, struct iwl_priv, beacon_update);
 867         struct sk_buff *beacon;
 868
 869         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 870         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 871
 872         if (!beacon) {
 873                 IWL_ERR(priv, "update beacon failed\n");
 874                 return;
 875         }
 876
 877         mutex_lock(&priv->mutex);
 878         /* new beacon skb is allocated every time; dispose previous.*/
 879         if (priv->ibss_beacon)
 880                 dev_kfree_skb(priv->ibss_beacon);
 881
 882         priv->ibss_beacon = beacon;
 883         mutex_unlock(&priv->mutex);
 884
 885         iwl3945_send_beacon_cmd(priv);
 886 }
 887
 888 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
 889                                 struct iwl_rx_mem_buffer *rxb)
 890 {
 891 #ifdef CONFIG_IWLWIFI_DEBUG
 892         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 893         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
 894         u8 rate = beacon->beacon_notify_hdr.rate;
 895
 896         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 897                 "tsf %d %d rate %d\n",
 898                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
 899                 beacon->beacon_notify_hdr.failure_frame,
 900                 le32_to_cpu(beacon->ibss_mgr_status),
 901                 le32_to_cpu(beacon->high_tsf),
 902                 le32_to_cpu(beacon->low_tsf), rate);
 903 #endif
 904
 905         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 906             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 907                 queue_work(priv->workqueue, &priv->beacon_update);
 908 }
 909
 910 /* Handle notification from uCode that card's power state is changing
 911  * due to software, hardware, or critical temperature RFKILL */
 912 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
 913                                     struct iwl_rx_mem_buffer *rxb)
 914 {
 915         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 916         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 917         unsigned long status = priv->status;
 918
 919         IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
 920                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 921                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 922
 923         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 924                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 925
 926         if (flags & HW_CARD_DISABLED)
 927                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 928         else
 929                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 930
 931
 932         iwl_scan_cancel(priv);
 933
 934         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 935              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 936                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 937                                 test_bit(STATUS_RF_KILL_HW, &priv->status));
 938         else
 939                 wake_up_interruptible(&priv->wait_command_queue);
 940 }
 941
 942 /**
 943  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
 944  *
 945  * Setup the RX handlers for each of the reply types sent from the uCode
 946  * to the host.
 947  *
 948  * This function chains into the hardware specific files for them to setup
 949  * any hardware specific handlers as well.
 950  */
 951 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
 952 {
 953         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
 954         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
 955         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 956         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 957         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
 958                         iwl_rx_spectrum_measure_notif;
 959         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 960         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 961             iwl_rx_pm_debug_statistics_notif;
 962         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
 963
 964         /*
 965          * The same handler is used for both the REPLY to a discrete
 966          * statistics request from the host as well as for the periodic
 967          * statistics notifications (after received beacons) from the uCode.
 968          */
 969         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
 970         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
 971
 972         iwl_setup_rx_scan_handlers(priv);
 973         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
 974
 975         /* Set up hardware specific Rx handlers */
 976         iwl3945_hw_rx_handler_setup(priv);
 977 }
 978
 979 /************************** RX-FUNCTIONS ****************************/
 980 /*
 981  * Rx theory of operation
 982  *
 983  * The host allocates 32 DMA target addresses and passes the host address
 984  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
 985  * 0 to 31
 986  *
 987  * Rx Queue Indexes
 988  * The host/firmware share two index registers for managing the Rx buffers.
 989  *
 990  * The READ index maps to the first position that the firmware may be writing
 991  * to -- the driver can read up to (but not including) this position and get
 992  * good data.
 993  * The READ index is managed by the firmware once the card is enabled.
 994  *
 995  * The WRITE index maps to the last position the driver has read from -- the
 996  * position preceding WRITE is the last slot the firmware can place a packet.
 997  *
 998  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
 999  * WRITE = READ.
1000  *
1001  * During initialization, the host sets up the READ queue position to the first
1002  * INDEX position, and WRITE to the last (READ - 1 wrapped)
1003  *
1004  * When the firmware places a packet in a buffer, it will advance the READ index
1005  * and fire the RX interrupt.  The driver can then query the READ index and
1006  * process as many packets as possible, moving the WRITE index forward as it
1007  * resets the Rx queue buffers with new memory.
1008  *
1009  * The management in the driver is as follows:
1010  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
1011  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1012  *   to replenish the iwl->rxq->rx_free.
1013  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1014  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
1015  *   'processed' and 'read' driver indexes as well)
1016  * + A received packet is processed and handed to the kernel network stack,
1017  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
1018  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1019  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1020  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
1021  *   were enough free buffers and RX_STALLED is set it is cleared.
1022  *
1023  *
1024  * Driver sequence:
1025  *
1026  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
1027  *                            iwl3945_rx_queue_restock
1028  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1029  *                            queue, updates firmware pointers, and updates
1030  *                            the WRITE index.  If insufficient rx_free buffers
1031  *                            are available, schedules iwl3945_rx_replenish
1032  *
1033  * -- enable interrupts --
1034  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
1035  *                            READ INDEX, detaching the SKB from the pool.
1036  *                            Moves the packet buffer from queue to rx_used.
1037  *                            Calls iwl3945_rx_queue_restock to refill any empty
1038  *                            slots.
1039  * ...
1040  *
1041  */
1042
1043 /**
1044  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1045  */
1046 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1047                                           dma_addr_t dma_addr)
1048 {
1049         return cpu_to_le32((u32)dma_addr);
1050 }
1051
1052 /**
1053  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1054  *
1055  * If there are slots in the RX queue that need to be restocked,
1056  * and we have free pre-allocated buffers, fill the ranks as much
1057  * as we can, pulling from rx_free.
1058  *
1059  * This moves the 'write' index forward to catch up with 'processed', and
1060  * also updates the memory address in the firmware to reference the new
1061  * target buffer.
1062  */
1063 static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
1064 {
1065         struct iwl_rx_queue *rxq = &priv->rxq;
1066         struct list_head *element;
1067         struct iwl_rx_mem_buffer *rxb;
1068         unsigned long flags;
1069         int write;
1070
1071         spin_lock_irqsave(&rxq->lock, flags);
1072         write = rxq->write & ~0x7;
1073         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1074                 /* Get next free Rx buffer, remove from free list */
1075                 element = rxq->rx_free.next;
1076                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1077                 list_del(element);
1078
1079                 /* Point to Rx buffer via next RBD in circular buffer */
1080                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1081                 rxq->queue[rxq->write] = rxb;
1082                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1083                 rxq->free_count--;
1084         }
1085         spin_unlock_irqrestore(&rxq->lock, flags);
1086         /* If the pre-allocated buffer pool is dropping low, schedule to
1087          * refill it */
1088         if (rxq->free_count <= RX_LOW_WATERMARK)
1089                 queue_work(priv->workqueue, &priv->rx_replenish);
1090
1091
1092         /* If we've added more space for the firmware to place data, tell it.
1093          * Increment device's write pointer in multiples of 8. */
1094         if ((rxq->write_actual != (rxq->write & ~0x7))
1095             || (abs(rxq->write - rxq->read) > 7)) {
1096                 spin_lock_irqsave(&rxq->lock, flags);
1097                 rxq->need_update = 1;
1098                 spin_unlock_irqrestore(&rxq->lock, flags);
1099                 iwl_rx_queue_update_write_ptr(priv, rxq);
1100         }
1101 }
1102
1103 /**
1104  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1105  *
1106  * When moving to rx_free an SKB is allocated for the slot.
1107  *
1108  * Also restock the Rx queue via iwl3945_rx_queue_restock.
1109  * This is called as a scheduled work item (except for during initialization)
1110  */
1111 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1112 {
1113         struct iwl_rx_queue *rxq = &priv->rxq;
1114         struct list_head *element;
1115         struct iwl_rx_mem_buffer *rxb;
1116         struct page *page;
1117         unsigned long flags;
1118         gfp_t gfp_mask = priority;
1119
1120         while (1) {
1121                 spin_lock_irqsave(&rxq->lock, flags);
1122
1123                 if (list_empty(&rxq->rx_used)) {
1124                         spin_unlock_irqrestore(&rxq->lock, flags);
1125                         return;
1126                 }
1127                 spin_unlock_irqrestore(&rxq->lock, flags);
1128
1129                 if (rxq->free_count > RX_LOW_WATERMARK)
1130                         gfp_mask |= __GFP_NOWARN;
1131
1132                 if (priv->hw_params.rx_page_order > 0)
1133                         gfp_mask |= __GFP_COMP;
1134
1135                 /* Alloc a new receive buffer */
1136                 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1137                 if (!page) {
1138                         if (net_ratelimit())
1139                                 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1140                         if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1141                             net_ratelimit())
1142                                 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1143                                          priority == GFP_ATOMIC ?  "GFP_ATOMIC" : "GFP_KERNEL",
1144                                          rxq->free_count);
1145                         /* We don't reschedule replenish work here -- we will
1146                          * call the restock method and if it still needs
1147                          * more buffers it will schedule replenish */
1148                         break;
1149                 }
1150
1151                 spin_lock_irqsave(&rxq->lock, flags);
1152                 if (list_empty(&rxq->rx_used)) {
1153                         spin_unlock_irqrestore(&rxq->lock, flags);
1154                         __free_pages(page, priv->hw_params.rx_page_order);
1155                         return;
1156                 }
1157                 element = rxq->rx_used.next;
1158                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1159                 list_del(element);
1160                 spin_unlock_irqrestore(&rxq->lock, flags);
1161
1162                 rxb->page = page;
1163                 /* Get physical address of RB/SKB */
1164                 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1165                                 PAGE_SIZE << priv->hw_params.rx_page_order,
1166                                 PCI_DMA_FROMDEVICE);
1167
1168                 spin_lock_irqsave(&rxq->lock, flags);
1169
1170                 list_add_tail(&rxb->list, &rxq->rx_free);
1171                 rxq->free_count++;
1172                 priv->alloc_rxb_page++;
1173
1174                 spin_unlock_irqrestore(&rxq->lock, flags);
1175         }
1176 }
1177
1178 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1179 {
1180         unsigned long flags;
1181         int i;
1182         spin_lock_irqsave(&rxq->lock, flags);
1183         INIT_LIST_HEAD(&rxq->rx_free);
1184         INIT_LIST_HEAD(&rxq->rx_used);
1185         /* Fill the rx_used queue with _all_ of the Rx buffers */
1186         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1187                 /* In the reset function, these buffers may have been allocated
1188                  * to an SKB, so we need to unmap and free potential storage */
1189                 if (rxq->pool[i].page != NULL) {
1190                         pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1191                                 PAGE_SIZE << priv->hw_params.rx_page_order,
1192                                 PCI_DMA_FROMDEVICE);
1193                         __iwl_free_pages(priv, rxq->pool[i].page);
1194                         rxq->pool[i].page = NULL;
1195                 }
1196                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1197         }
1198
1199         /* Set us so that we have processed and used all buffers, but have
1200          * not restocked the Rx queue with fresh buffers */
1201         rxq->read = rxq->write = 0;
1202         rxq->write_actual = 0;
1203         rxq->free_count = 0;
1204         spin_unlock_irqrestore(&rxq->lock, flags);
1205 }
1206
1207 void iwl3945_rx_replenish(void *data)
1208 {
1209         struct iwl_priv *priv = data;
1210         unsigned long flags;
1211
1212         iwl3945_rx_allocate(priv, GFP_KERNEL);
1213
1214         spin_lock_irqsave(&priv->lock, flags);
1215         iwl3945_rx_queue_restock(priv);
1216         spin_unlock_irqrestore(&priv->lock, flags);
1217 }
1218
1219 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1220 {
1221         iwl3945_rx_allocate(priv, GFP_ATOMIC);
1222
1223         iwl3945_rx_queue_restock(priv);
1224 }
1225
1226
1227 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1228  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1229  * This free routine walks the list of POOL entries and if SKB is set to
1230  * non NULL it is unmapped and freed
1231  */
1232 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1233 {
1234         int i;
1235         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1236                 if (rxq->pool[i].page != NULL) {
1237                         pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1238                                 PAGE_SIZE << priv->hw_params.rx_page_order,
1239                                 PCI_DMA_FROMDEVICE);
1240                         __iwl_free_pages(priv, rxq->pool[i].page);
1241                         rxq->pool[i].page = NULL;
1242                 }
1243         }
1244
1245         dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1246                           rxq->dma_addr);
1247         dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1248                           rxq->rb_stts, rxq->rb_stts_dma);
1249         rxq->bd = NULL;
1250         rxq->rb_stts  = NULL;
1251 }
1252
1253
1254 /* Convert linear signal-to-noise ratio into dB */
1255 static u8 ratio2dB[100] = {
1256 /*       0   1   2   3   4   5   6   7   8   9 */
1257          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1258         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1259         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1260         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1261         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1262         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1263         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1264         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1265         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1266         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
1267 };
1268
1269 /* Calculates a relative dB value from a ratio of linear
1270  *   (i.e. not dB) signal levels.
1271  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1272 int iwl3945_calc_db_from_ratio(int sig_ratio)
1273 {
1274         /* 1000:1 or higher just report as 60 dB */
1275         if (sig_ratio >= 1000)
1276                 return 60;
1277
1278         /* 100:1 or higher, divide by 10 and use table,
1279          *   add 20 dB to make up for divide by 10 */
1280         if (sig_ratio >= 100)
1281                 return 20 + (int)ratio2dB[sig_ratio/10];
1282
1283         /* We shouldn't see this */
1284         if (sig_ratio < 1)
1285                 return 0;
1286
1287         /* Use table for ratios 1:1 - 99:1 */
1288         return (int)ratio2dB[sig_ratio];
1289 }
1290
1291 /**
1292  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1293  *
1294  * Uses the priv->rx_handlers callback function array to invoke
1295  * the appropriate handlers, including command responses,
1296  * frame-received notifications, and other notifications.
1297  */
1298 static void iwl3945_rx_handle(struct iwl_priv *priv)
1299 {
1300         struct iwl_rx_mem_buffer *rxb;
1301         struct iwl_rx_packet *pkt;
1302         struct iwl_rx_queue *rxq = &priv->rxq;
1303         u32 r, i;
1304         int reclaim;
1305         unsigned long flags;
1306         u8 fill_rx = 0;
1307         u32 count = 8;
1308         int total_empty = 0;
1309
1310         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1311          * buffer that the driver may process (last buffer filled by ucode). */
1312         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1313         i = rxq->read;
1314
1315         /* calculate total frames need to be restock after handling RX */
1316         total_empty = r - rxq->write_actual;
1317         if (total_empty < 0)
1318                 total_empty += RX_QUEUE_SIZE;
1319
1320         if (total_empty > (RX_QUEUE_SIZE / 2))
1321                 fill_rx = 1;
1322         /* Rx interrupt, but nothing sent from uCode */
1323         if (i == r)
1324                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1325
1326         while (i != r) {
1327                 rxb = rxq->queue[i];
1328
1329                 /* If an RXB doesn't have a Rx queue slot associated with it,
1330                  * then a bug has been introduced in the queue refilling
1331                  * routines -- catch it here */
1332                 BUG_ON(rxb == NULL);
1333
1334                 rxq->queue[i] = NULL;
1335
1336                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1337                                PAGE_SIZE << priv->hw_params.rx_page_order,
1338                                PCI_DMA_FROMDEVICE);
1339                 pkt = rxb_addr(rxb);
1340
1341                 trace_iwlwifi_dev_rx(priv, pkt,
1342                         le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1343
1344                 /* Reclaim a command buffer only if this packet is a response
1345                  *   to a (driver-originated) command.
1346                  * If the packet (e.g. Rx frame) originated from uCode,
1347                  *   there is no command buffer to reclaim.
1348                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1349                  *   but apparently a few don't get set; catch them here. */
1350                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1351                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1352                         (pkt->hdr.cmd != REPLY_TX);
1353
1354                 /* Based on type of command response or notification,
1355                  *   handle those that need handling via function in
1356                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
1357                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1358                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1359                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1360                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1361                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1362                 } else {
1363                         /* No handling needed */
1364                         IWL_DEBUG_RX(priv,
1365                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1366                                 r, i, get_cmd_string(pkt->hdr.cmd),
1367                                 pkt->hdr.cmd);
1368                 }
1369
1370                 /*
1371                  * XXX: After here, we should always check rxb->page
1372                  * against NULL before touching it or its virtual
1373                  * memory (pkt). Because some rx_handler might have
1374                  * already taken or freed the pages.
1375                  */
1376
1377                 if (reclaim) {
1378                         /* Invoke any callbacks, transfer the buffer to caller,
1379                          * and fire off the (possibly) blocking iwl_send_cmd()
1380                          * as we reclaim the driver command queue */
1381                         if (rxb->page)
1382                                 iwl_tx_cmd_complete(priv, rxb);
1383                         else
1384                                 IWL_WARN(priv, "Claim null rxb?\n");
1385                 }
1386
1387                 /* Reuse the page if possible. For notification packets and
1388                  * SKBs that fail to Rx correctly, add them back into the
1389                  * rx_free list for reuse later. */
1390                 spin_lock_irqsave(&rxq->lock, flags);
1391                 if (rxb->page != NULL) {
1392                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1393                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1394                                 PCI_DMA_FROMDEVICE);
1395                         list_add_tail(&rxb->list, &rxq->rx_free);
1396                         rxq->free_count++;
1397                 } else
1398                         list_add_tail(&rxb->list, &rxq->rx_used);
1399
1400                 spin_unlock_irqrestore(&rxq->lock, flags);
1401
1402                 i = (i + 1) & RX_QUEUE_MASK;
1403                 /* If there are a lot of unused frames,
1404                  * restock the Rx queue so ucode won't assert. */
1405                 if (fill_rx) {
1406                         count++;
1407                         if (count >= 8) {
1408                                 rxq->read = i;
1409                                 iwl3945_rx_replenish_now(priv);
1410                                 count = 0;
1411                         }
1412                 }
1413         }
1414
1415         /* Backtrack one entry */
1416         rxq->read = i;
1417         if (fill_rx)
1418                 iwl3945_rx_replenish_now(priv);
1419         else
1420                 iwl3945_rx_queue_restock(priv);
1421 }
1422
1423 /* call this function to flush any scheduled tasklet */
1424 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1425 {
1426         /* wait to make sure we flush pending tasklet*/
1427         synchronize_irq(priv->pci_dev->irq);
1428         tasklet_kill(&priv->irq_tasklet);
1429 }
1430
1431 static const char *desc_lookup(int i)
1432 {
1433         switch (i) {
1434         case 1:
1435                 return "FAIL";
1436         case 2:
1437                 return "BAD_PARAM";
1438         case 3:
1439                 return "BAD_CHECKSUM";
1440         case 4:
1441                 return "NMI_INTERRUPT";
1442         case 5:
1443                 return "SYSASSERT";
1444         case 6:
1445                 return "FATAL_ERROR";
1446         }
1447
1448         return "UNKNOWN";
1449 }
1450
1451 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1452 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1453
1454 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1455 {
1456         u32 i;
1457         u32 desc, time, count, base, data1;
1458         u32 blink1, blink2, ilink1, ilink2;
1459
1460         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1461
1462         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1463                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1464                 return;
1465         }
1466
1467
1468         count = iwl_read_targ_mem(priv, base);
1469
1470         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1471                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1472                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1473                         priv->status, count);
1474         }
1475
1476         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
1477                   "ilink1  nmiPC   Line\n");
1478         for (i = ERROR_START_OFFSET;
1479              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1480              i += ERROR_ELEM_SIZE) {
1481                 desc = iwl_read_targ_mem(priv, base + i);
1482                 time =
1483                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1484                 blink1 =
1485                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1486                 blink2 =
1487                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1488                 ilink1 =
1489                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1490                 ilink2 =
1491                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1492                 data1 =
1493                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1494
1495                 IWL_ERR(priv,
1496                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1497                         desc_lookup(desc), desc, time, blink1, blink2,
1498                         ilink1, ilink2, data1);
1499                 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1500                                         0, blink1, blink2, ilink1, ilink2);
1501         }
1502 }
1503
1504 #define EVENT_START_OFFSET  (6 * sizeof(u32))
1505
1506 /**
1507  * iwl3945_print_event_log - Dump error event log to syslog
1508  *
1509  */
1510 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1511                                   u32 num_events, u32 mode,
1512                                   int pos, char **buf, size_t bufsz)
1513 {
1514         u32 i;
1515         u32 base;       /* SRAM byte address of event log header */
1516         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1517         u32 ptr;        /* SRAM byte address of log data */
1518         u32 ev, time, data; /* event log data */
1519         unsigned long reg_flags;
1520
1521         if (num_events == 0)
1522                 return pos;
1523
1524         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1525
1526         if (mode == 0)
1527                 event_size = 2 * sizeof(u32);
1528         else
1529                 event_size = 3 * sizeof(u32);
1530
1531         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1532
1533         /* Make sure device is powered up for SRAM reads */
1534         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1535         iwl_grab_nic_access(priv);
1536
1537         /* Set starting address; reads will auto-increment */
1538         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1539         rmb();
1540
1541         /* "time" is actually "data" for mode 0 (no timestamp).
1542          * place event id # at far right for easier visual parsing. */
1543         for (i = 0; i < num_events; i++) {
1544                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1545                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1546                 if (mode == 0) {
1547                         /* data, ev */
1548                         if (bufsz) {
1549                                 pos += scnprintf(*buf + pos, bufsz - pos,
1550                                                 "0x%08x:%04u\n",
1551                                                 time, ev);
1552                         } else {
1553                                 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1554                                 trace_iwlwifi_dev_ucode_event(priv, 0,
1555                                                               time, ev);
1556                         }
1557                 } else {
1558                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1559                         if (bufsz) {
1560                                 pos += scnprintf(*buf + pos, bufsz - pos,
1561                                                 "%010u:0x%08x:%04u\n",
1562                                                  time, data, ev);
1563                         } else {
1564                                 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1565                                         time, data, ev);
1566                                 trace_iwlwifi_dev_ucode_event(priv, time,
1567                                                               data, ev);
1568                         }
1569                 }
1570         }
1571
1572         /* Allow device to power down */
1573         iwl_release_nic_access(priv);
1574         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1575         return pos;
1576 }
1577
1578 /**
1579  * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1580  */
1581 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1582                                       u32 num_wraps, u32 next_entry,
1583                                       u32 size, u32 mode,
1584                                       int pos, char **buf, size_t bufsz)
1585 {
1586         /*
1587          * display the newest DEFAULT_LOG_ENTRIES entries
1588          * i.e the entries just before the next ont that uCode would fill.
1589          */
1590         if (num_wraps) {
1591                 if (next_entry < size) {
1592                         pos = iwl3945_print_event_log(priv,
1593                                              capacity - (size - next_entry),
1594                                              size - next_entry, mode,
1595                                              pos, buf, bufsz);
1596                         pos = iwl3945_print_event_log(priv, 0,
1597                                                       next_entry, mode,
1598                                                       pos, buf, bufsz);
1599                 } else
1600                         pos = iwl3945_print_event_log(priv, next_entry - size,
1601                                                       size, mode,
1602                                                       pos, buf, bufsz);
1603         } else {
1604                 if (next_entry < size)
1605                         pos = iwl3945_print_event_log(priv, 0,
1606                                                       next_entry, mode,
1607                                                       pos, buf, bufsz);
1608                 else
1609                         pos = iwl3945_print_event_log(priv, next_entry - size,
1610                                                       size, mode,
1611                                                       pos, buf, bufsz);
1612         }
1613         return pos;
1614 }
1615
1616 /* For sanity check only.  Actual size is determined by uCode, typ. 512 */
1617 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1618
1619 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1620
1621 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1622                             char **buf, bool display)
1623 {
1624         u32 base;       /* SRAM byte address of event log header */
1625         u32 capacity;   /* event log capacity in # entries */
1626         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1627         u32 num_wraps;  /* # times uCode wrapped to top of log */
1628         u32 next_entry; /* index of next entry to be written by uCode */
1629         u32 size;       /* # entries that we'll print */
1630         int pos = 0;
1631         size_t bufsz = 0;
1632
1633         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1634         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1635                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1636                 return  -EINVAL;
1637         }
1638
1639         /* event log header */
1640         capacity = iwl_read_targ_mem(priv, base);
1641         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1642         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1643         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1644
1645         if (capacity > IWL3945_MAX_EVENT_LOG_SIZE) {
1646                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1647                         capacity, IWL3945_MAX_EVENT_LOG_SIZE);
1648                 capacity = IWL3945_MAX_EVENT_LOG_SIZE;
1649         }
1650
1651         if (next_entry > IWL3945_MAX_EVENT_LOG_SIZE) {
1652                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1653                         next_entry, IWL3945_MAX_EVENT_LOG_SIZE);
1654                 next_entry = IWL3945_MAX_EVENT_LOG_SIZE;
1655         }
1656
1657         size = num_wraps ? capacity : next_entry;
1658
1659         /* bail out if nothing in log */
1660         if (size == 0) {
1661                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1662                 return pos;
1663         }
1664
1665 #ifdef CONFIG_IWLWIFI_DEBUG
1666         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1667                 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1668                         ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1669 #else
1670         size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1671                 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1672 #endif
1673
1674         IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1675                   size);
1676
1677 #ifdef CONFIG_IWLWIFI_DEBUG
1678         if (display) {
1679                 if (full_log)
1680                         bufsz = capacity * 48;
1681                 else
1682                         bufsz = size * 48;
1683                 *buf = kmalloc(bufsz, GFP_KERNEL);
1684                 if (!*buf)
1685                         return -ENOMEM;
1686         }
1687         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1688                 /* if uCode has wrapped back to top of log,
1689                  * start at the oldest entry,
1690                  * i.e the next one that uCode would fill.
1691                  */
1692                 if (num_wraps)
1693                         pos = iwl3945_print_event_log(priv, next_entry,
1694                                                 capacity - next_entry, mode,
1695                                                 pos, buf, bufsz);
1696
1697                 /* (then/else) start at top of log */
1698                 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1699                                               pos, buf, bufsz);
1700         } else
1701                 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1702                                                     next_entry, size, mode,
1703                                                     pos, buf, bufsz);
1704 #else
1705         pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1706                                             next_entry, size, mode,
1707                                             pos, buf, bufsz);
1708 #endif
1709         return pos;
1710 }
1711
1712 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1713 {
1714         u32 inta, handled = 0;
1715         u32 inta_fh;
1716         unsigned long flags;
1717 #ifdef CONFIG_IWLWIFI_DEBUG
1718         u32 inta_mask;
1719 #endif
1720
1721         spin_lock_irqsave(&priv->lock, flags);
1722
1723         /* Ack/clear/reset pending uCode interrupts.
1724          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1725          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1726         inta = iwl_read32(priv, CSR_INT);
1727         iwl_write32(priv, CSR_INT, inta);
1728
1729         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1730          * Any new interrupts that happen after this, either while we're
1731          * in this tasklet, or later, will show up in next ISR/tasklet. */
1732         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1733         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1734
1735 #ifdef CONFIG_IWLWIFI_DEBUG
1736         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1737                 /* just for debug */
1738                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1739                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1740                               inta, inta_mask, inta_fh);
1741         }
1742 #endif
1743
1744         spin_unlock_irqrestore(&priv->lock, flags);
1745
1746         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1747          * atomic, make sure that inta covers all the interrupts that
1748          * we've discovered, even if FH interrupt came in just after
1749          * reading CSR_INT. */
1750         if (inta_fh & CSR39_FH_INT_RX_MASK)
1751                 inta |= CSR_INT_BIT_FH_RX;
1752         if (inta_fh & CSR39_FH_INT_TX_MASK)
1753                 inta |= CSR_INT_BIT_FH_TX;
1754
1755         /* Now service all interrupt bits discovered above. */
1756         if (inta & CSR_INT_BIT_HW_ERR) {
1757                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1758
1759                 /* Tell the device to stop sending interrupts */
1760                 iwl_disable_interrupts(priv);
1761
1762                 priv->isr_stats.hw++;
1763                 iwl_irq_handle_error(priv);
1764
1765                 handled |= CSR_INT_BIT_HW_ERR;
1766
1767                 return;
1768         }
1769
1770 #ifdef CONFIG_IWLWIFI_DEBUG
1771         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1772                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1773                 if (inta & CSR_INT_BIT_SCD) {
1774                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1775                                       "the frame/frames.\n");
1776                         priv->isr_stats.sch++;
1777                 }
1778
1779                 /* Alive notification via Rx interrupt will do the real work */
1780                 if (inta & CSR_INT_BIT_ALIVE) {
1781                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1782                         priv->isr_stats.alive++;
1783                 }
1784         }
1785 #endif
1786         /* Safely ignore these bits for debug checks below */
1787         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1788
1789         /* Error detected by uCode */
1790         if (inta & CSR_INT_BIT_SW_ERR) {
1791                 IWL_ERR(priv, "Microcode SW error detected. "
1792                         "Restarting 0x%X.\n", inta);
1793                 priv->isr_stats.sw++;
1794                 priv->isr_stats.sw_err = inta;
1795                 iwl_irq_handle_error(priv);
1796                 handled |= CSR_INT_BIT_SW_ERR;
1797         }
1798
1799         /* uCode wakes up after power-down sleep */
1800         if (inta & CSR_INT_BIT_WAKEUP) {
1801                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1802                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1803                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1804                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1805                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1806                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1807                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1808                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1809
1810                 priv->isr_stats.wakeup++;
1811                 handled |= CSR_INT_BIT_WAKEUP;
1812         }
1813
1814         /* All uCode command responses, including Tx command responses,
1815          * Rx "responses" (frame-received notification), and other
1816          * notifications from uCode come through here*/
1817         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1818                 iwl3945_rx_handle(priv);
1819                 priv->isr_stats.rx++;
1820                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1821         }
1822
1823         if (inta & CSR_INT_BIT_FH_TX) {
1824                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1825                 priv->isr_stats.tx++;
1826
1827                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1828                 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1829                                         (FH39_SRVC_CHNL), 0x0);
1830                 handled |= CSR_INT_BIT_FH_TX;
1831         }
1832
1833         if (inta & ~handled) {
1834                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1835                 priv->isr_stats.unhandled++;
1836         }
1837
1838         if (inta & ~priv->inta_mask) {
1839                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1840                          inta & ~priv->inta_mask);
1841                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1842         }
1843
1844         /* Re-enable all interrupts */
1845         /* only Re-enable if disabled by irq */
1846         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1847                 iwl_enable_interrupts(priv);
1848
1849 #ifdef CONFIG_IWLWIFI_DEBUG
1850         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1851                 inta = iwl_read32(priv, CSR_INT);
1852                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1853                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1854                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1855                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1856         }
1857 #endif
1858 }
1859
1860 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1861                                          enum ieee80211_band band,
1862                                      u8 is_active, u8 n_probes,
1863                                      struct iwl3945_scan_channel *scan_ch)
1864 {
1865         struct ieee80211_channel *chan;
1866         const struct ieee80211_supported_band *sband;
1867         const struct iwl_channel_info *ch_info;
1868         u16 passive_dwell = 0;
1869         u16 active_dwell = 0;
1870         int added, i;
1871
1872         sband = iwl_get_hw_mode(priv, band);
1873         if (!sband)
1874                 return 0;
1875
1876         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1877         passive_dwell = iwl_get_passive_dwell_time(priv, band);
1878
1879         if (passive_dwell <= active_dwell)
1880                 passive_dwell = active_dwell + 1;
1881
1882         for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1883                 chan = priv->scan_request->channels[i];
1884
1885                 if (chan->band != band)
1886                         continue;
1887
1888                 scan_ch->channel = chan->hw_value;
1889
1890                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1891                 if (!is_channel_valid(ch_info)) {
1892                         IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1893                                        scan_ch->channel);
1894                         continue;
1895                 }
1896
1897                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1898                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1899                 /* If passive , set up for auto-switch
1900                  *  and use long active_dwell time.
1901                  */
1902                 if (!is_active || is_channel_passive(ch_info) ||
1903                     (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1904                         scan_ch->type = 0;      /* passive */
1905                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
1906                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1907                 } else {
1908                         scan_ch->type = 1;      /* active */
1909                 }
1910
1911                 /* Set direct probe bits. These may be used both for active
1912                  * scan channels (probes gets sent right away),
1913                  * or for passive channels (probes get se sent only after
1914                  * hearing clear Rx packet).*/
1915                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1916                         if (n_probes)
1917                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1918                 } else {
1919                         /* uCode v1 does not allow setting direct probe bits on
1920                          * passive channel. */
1921                         if ((scan_ch->type & 1) && n_probes)
1922                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1923                 }
1924
1925                 /* Set txpower levels to defaults */
1926                 scan_ch->tpc.dsp_atten = 110;
1927                 /* scan_pwr_info->tpc.dsp_atten; */
1928
1929                 /*scan_pwr_info->tpc.tx_gain; */
1930                 if (band == IEEE80211_BAND_5GHZ)
1931                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1932                 else {
1933                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1934                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1935                          * power level:
1936                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1937                          */
1938                 }
1939
1940                 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1941                                scan_ch->channel,
1942                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1943                                (scan_ch->type & 1) ?
1944                                active_dwell : passive_dwell);
1945
1946                 scan_ch++;
1947                 added++;
1948         }
1949
1950         IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1951         return added;
1952 }
1953
1954 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1955                               struct ieee80211_rate *rates)
1956 {
1957         int i;
1958
1959         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1960                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1961                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1962                 rates[i].hw_value_short = i;
1963                 rates[i].flags = 0;
1964                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1965                         /*
1966                          * If CCK != 1M then set short preamble rate flag.
1967                          */
1968                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1969                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1970                 }
1971         }
1972 }
1973
1974 /******************************************************************************
1975  *
1976  * uCode download functions
1977  *
1978  ******************************************************************************/
1979
1980 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1981 {
1982         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1983         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1984         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1985         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1986         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1987         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1988 }
1989
1990 /**
1991  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1992  *     looking at all data.
1993  */
1994 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1995 {
1996         u32 val;
1997         u32 save_len = len;
1998         int rc = 0;
1999         u32 errcnt;
2000
2001         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2002
2003         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2004                                IWL39_RTC_INST_LOWER_BOUND);
2005
2006         errcnt = 0;
2007         for (; len > 0; len -= sizeof(u32), image++) {
2008                 /* read data comes through single port, auto-incr addr */
2009                 /* NOTE: Use the debugless read so we don't flood kernel log
2010                  * if IWL_DL_IO is set */
2011                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2012                 if (val != le32_to_cpu(*image)) {
2013                         IWL_ERR(priv, "uCode INST section is invalid at "
2014                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2015                                   save_len - len, val, le32_to_cpu(*image));
2016                         rc = -EIO;
2017                         errcnt++;
2018                         if (errcnt >= 20)
2019                                 break;
2020                 }
2021         }
2022
2023
2024         if (!errcnt)
2025                 IWL_DEBUG_INFO(priv,
2026                         "ucode image in INSTRUCTION memory is good\n");
2027
2028         return rc;
2029 }
2030
2031
2032 /**
2033  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2034  *   using sample data 100 bytes apart.  If these sample points are good,
2035  *   it's a pretty good bet that everything between them is good, too.
2036  */
2037 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2038 {
2039         u32 val;
2040         int rc = 0;
2041         u32 errcnt = 0;
2042         u32 i;
2043
2044         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2045
2046         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2047                 /* read data comes through single port, auto-incr addr */
2048                 /* NOTE: Use the debugless read so we don't flood kernel log
2049                  * if IWL_DL_IO is set */
2050                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2051                         i + IWL39_RTC_INST_LOWER_BOUND);
2052                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2053                 if (val != le32_to_cpu(*image)) {
2054 #if 0 /* Enable this if you want to see details */
2055                         IWL_ERR(priv, "uCode INST section is invalid at "
2056                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2057                                   i, val, *image);
2058 #endif
2059                         rc = -EIO;
2060                         errcnt++;
2061                         if (errcnt >= 3)
2062                                 break;
2063                 }
2064         }
2065
2066         return rc;
2067 }
2068
2069
2070 /**
2071  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2072  *    and verify its contents
2073  */
2074 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2075 {
2076         __le32 *image;
2077         u32 len;
2078         int rc = 0;
2079
2080         /* Try bootstrap */
2081         image = (__le32 *)priv->ucode_boot.v_addr;
2082         len = priv->ucode_boot.len;
2083         rc = iwl3945_verify_inst_sparse(priv, image, len);
2084         if (rc == 0) {
2085                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2086                 return 0;
2087         }
2088
2089         /* Try initialize */
2090         image = (__le32 *)priv->ucode_init.v_addr;
2091         len = priv->ucode_init.len;
2092         rc = iwl3945_verify_inst_sparse(priv, image, len);
2093         if (rc == 0) {
2094                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2095                 return 0;
2096         }
2097
2098         /* Try runtime/protocol */
2099         image = (__le32 *)priv->ucode_code.v_addr;
2100         len = priv->ucode_code.len;
2101         rc = iwl3945_verify_inst_sparse(priv, image, len);
2102         if (rc == 0) {
2103                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2104                 return 0;
2105         }
2106
2107         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2108
2109         /* Since nothing seems to match, show first several data entries in
2110          * instruction SRAM, so maybe visual inspection will give a clue.
2111          * Selection of bootstrap image (vs. other images) is arbitrary. */
2112         image = (__le32 *)priv->ucode_boot.v_addr;
2113         len = priv->ucode_boot.len;
2114         rc = iwl3945_verify_inst_full(priv, image, len);
2115
2116         return rc;
2117 }
2118
2119 static void iwl3945_nic_start(struct iwl_priv *priv)
2120 {
2121         /* Remove all resets to allow NIC to operate */
2122         iwl_write32(priv, CSR_RESET, 0);
2123 }
2124
2125 /**
2126  * iwl3945_read_ucode - Read uCode images from disk file.
2127  *
2128  * Copy into buffers for card to fetch via bus-mastering
2129  */
2130 static int iwl3945_read_ucode(struct iwl_priv *priv)
2131 {
2132         const struct iwl_ucode_header *ucode;
2133         int ret = -EINVAL, index;
2134         const struct firmware *ucode_raw;
2135         /* firmware file name contains uCode/driver compatibility version */
2136         const char *name_pre = priv->cfg->fw_name_pre;
2137         const unsigned int api_max = priv->cfg->ucode_api_max;
2138         const unsigned int api_min = priv->cfg->ucode_api_min;
2139         char buf[25];
2140         u8 *src;
2141         size_t len;
2142         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2143
2144         /* Ask kernel firmware_class module to get the boot firmware off disk.
2145          * request_firmware() is synchronous, file is in memory on return. */
2146         for (index = api_max; index >= api_min; index--) {
2147                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2148                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2149                 if (ret < 0) {
2150                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
2151                                   buf, ret);
2152                         if (ret == -ENOENT)
2153                                 continue;
2154                         else
2155                                 goto error;
2156                 } else {
2157                         if (index < api_max)
2158                                 IWL_ERR(priv, "Loaded firmware %s, "
2159                                         "which is deprecated. "
2160                                         " Please use API v%u instead.\n",
2161                                           buf, api_max);
2162                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2163                                        "(%zd bytes) from disk\n",
2164                                        buf, ucode_raw->size);
2165                         break;
2166                 }
2167         }
2168
2169         if (ret < 0)
2170                 goto error;
2171
2172         /* Make sure that we got at least our header! */
2173         if (ucode_raw->size <  priv->cfg->ops->ucode->get_header_size(1)) {
2174                 IWL_ERR(priv, "File size way too small!\n");
2175                 ret = -EINVAL;
2176                 goto err_release;
2177         }
2178
2179         /* Data from ucode file:  header followed by uCode images */
2180         ucode = (struct iwl_ucode_header *)ucode_raw->data;
2181
2182         priv->ucode_ver = le32_to_cpu(ucode->ver);
2183         api_ver = IWL_UCODE_API(priv->ucode_ver);
2184         inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2185         data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2186         init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2187         init_data_size =
2188                 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2189         boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2190         src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2191
2192         /* api_ver should match the api version forming part of the
2193          * firmware filename ... but we don't check for that and only rely
2194          * on the API version read from firmware header from here on forward */
2195
2196         if (api_ver < api_min || api_ver > api_max) {
2197                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2198                           "Driver supports v%u, firmware is v%u.\n",
2199                           api_max, api_ver);
2200                 priv->ucode_ver = 0;
2201                 ret = -EINVAL;
2202                 goto err_release;
2203         }
2204         if (api_ver != api_max)
2205                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2206                           "got %u. New firmware can be obtained "
2207                           "from http://www.intellinuxwireless.org.\n",
2208                           api_max, api_ver);
2209
2210         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2211                 IWL_UCODE_MAJOR(priv->ucode_ver),
2212                 IWL_UCODE_MINOR(priv->ucode_ver),
2213                 IWL_UCODE_API(priv->ucode_ver),
2214                 IWL_UCODE_SERIAL(priv->ucode_ver));
2215
2216         snprintf(priv->hw->wiphy->fw_version,
2217                  sizeof(priv->hw->wiphy->fw_version),
2218                  "%u.%u.%u.%u",
2219                  IWL_UCODE_MAJOR(priv->ucode_ver),
2220                  IWL_UCODE_MINOR(priv->ucode_ver),
2221                  IWL_UCODE_API(priv->ucode_ver),
2222                  IWL_UCODE_SERIAL(priv->ucode_ver));
2223
2224         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2225                        priv->ucode_ver);
2226         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2227                        inst_size);
2228         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2229                        data_size);
2230         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2231                        init_size);
2232         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2233                        init_data_size);
2234         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2235                        boot_size);
2236
2237
2238         /* Verify size of file vs. image size info in file's header */
2239         if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2240                 inst_size + data_size + init_size +
2241                 init_data_size + boot_size) {
2242
2243                 IWL_DEBUG_INFO(priv,
2244                         "uCode file size %zd does not match expected size\n",
2245                         ucode_raw->size);
2246                 ret = -EINVAL;
2247                 goto err_release;
2248         }
2249
2250         /* Verify that uCode images will fit in card's SRAM */
2251         if (inst_size > IWL39_MAX_INST_SIZE) {
2252                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2253                                inst_size);
2254                 ret = -EINVAL;
2255                 goto err_release;
2256         }
2257
2258         if (data_size > IWL39_MAX_DATA_SIZE) {
2259                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2260                                data_size);
2261                 ret = -EINVAL;
2262                 goto err_release;
2263         }
2264         if (init_size > IWL39_MAX_INST_SIZE) {
2265                 IWL_DEBUG_INFO(priv,
2266                                 "uCode init instr len %d too large to fit in\n",
2267                                 init_size);
2268                 ret = -EINVAL;
2269                 goto err_release;
2270         }
2271         if (init_data_size > IWL39_MAX_DATA_SIZE) {
2272                 IWL_DEBUG_INFO(priv,
2273                                 "uCode init data len %d too large to fit in\n",
2274                                 init_data_size);
2275                 ret = -EINVAL;
2276                 goto err_release;
2277         }
2278         if (boot_size > IWL39_MAX_BSM_SIZE) {
2279                 IWL_DEBUG_INFO(priv,
2280                                 "uCode boot instr len %d too large to fit in\n",
2281                                 boot_size);
2282                 ret = -EINVAL;
2283                 goto err_release;
2284         }
2285
2286         /* Allocate ucode buffers for card's bus-master loading ... */
2287
2288         /* Runtime instructions and 2 copies of data:
2289          * 1) unmodified from disk
2290          * 2) backup cache for save/restore during power-downs */
2291         priv->ucode_code.len = inst_size;
2292         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2293
2294         priv->ucode_data.len = data_size;
2295         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2296
2297         priv->ucode_data_backup.len = data_size;
2298         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2299
2300         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2301             !priv->ucode_data_backup.v_addr)
2302                 goto err_pci_alloc;
2303
2304         /* Initialization instructions and data */
2305         if (init_size && init_data_size) {
2306                 priv->ucode_init.len = init_size;
2307                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2308
2309                 priv->ucode_init_data.len = init_data_size;
2310                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2311
2312                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2313                         goto err_pci_alloc;
2314         }
2315
2316         /* Bootstrap (instructions only, no data) */
2317         if (boot_size) {
2318                 priv->ucode_boot.len = boot_size;
2319                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2320
2321                 if (!priv->ucode_boot.v_addr)
2322                         goto err_pci_alloc;
2323         }
2324
2325         /* Copy images into buffers for card's bus-master reads ... */
2326
2327         /* Runtime instructions (first block of data in file) */
2328         len = inst_size;
2329         IWL_DEBUG_INFO(priv,
2330                 "Copying (but not loading) uCode instr len %zd\n", len);
2331         memcpy(priv->ucode_code.v_addr, src, len);
2332         src += len;
2333
2334         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2335                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2336
2337         /* Runtime data (2nd block)
2338          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
2339         len = data_size;
2340         IWL_DEBUG_INFO(priv,
2341                 "Copying (but not loading) uCode data len %zd\n", len);
2342         memcpy(priv->ucode_data.v_addr, src, len);
2343         memcpy(priv->ucode_data_backup.v_addr, src, len);
2344         src += len;
2345
2346         /* Initialization instructions (3rd block) */
2347         if (init_size) {
2348                 len = init_size;
2349                 IWL_DEBUG_INFO(priv,
2350                         "Copying (but not loading) init instr len %zd\n", len);
2351                 memcpy(priv->ucode_init.v_addr, src, len);
2352                 src += len;
2353         }
2354
2355         /* Initialization data (4th block) */
2356         if (init_data_size) {
2357                 len = init_data_size;
2358                 IWL_DEBUG_INFO(priv,
2359                         "Copying (but not loading) init data len %zd\n", len);
2360                 memcpy(priv->ucode_init_data.v_addr, src, len);
2361                 src += len;
2362         }
2363
2364         /* Bootstrap instructions (5th block) */
2365         len = boot_size;
2366         IWL_DEBUG_INFO(priv,
2367                 "Copying (but not loading) boot instr len %zd\n", len);
2368         memcpy(priv->ucode_boot.v_addr, src, len);
2369
2370         /* We have our copies now, allow OS release its copies */
2371         release_firmware(ucode_raw);
2372         return 0;
2373
2374  err_pci_alloc:
2375         IWL_ERR(priv, "failed to allocate pci memory\n");
2376         ret = -ENOMEM;
2377         iwl3945_dealloc_ucode_pci(priv);
2378
2379  err_release:
2380         release_firmware(ucode_raw);
2381
2382  error:
2383         return ret;
2384 }
2385
2386
2387 /**
2388  * iwl3945_set_ucode_ptrs - Set uCode address location
2389  *
2390  * Tell initialization uCode where to find runtime uCode.
2391  *
2392  * BSM registers initially contain pointers to initialization uCode.
2393  * We need to replace them to load runtime uCode inst and data,
2394  * and to save runtime data when powering down.
2395  */
2396 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2397 {
2398         dma_addr_t pinst;
2399         dma_addr_t pdata;
2400
2401         /* bits 31:0 for 3945 */
2402         pinst = priv->ucode_code.p_addr;
2403         pdata = priv->ucode_data_backup.p_addr;
2404
2405         /* Tell bootstrap uCode where to find image to load */
2406         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2407         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2408         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2409                                  priv->ucode_data.len);
2410
2411         /* Inst byte count must be last to set up, bit 31 signals uCode
2412          *   that all new ptr/size info is in place */
2413         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2414                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2415
2416         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2417
2418         return 0;
2419 }
2420
2421 /**
2422  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2423  *
2424  * Called after REPLY_ALIVE notification received from "initialize" uCode.
2425  *
2426  * Tell "initialize" uCode to go ahead and load the runtime uCode.
2427  */
2428 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2429 {
2430         /* Check alive response for "valid" sign from uCode */
2431         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2432                 /* We had an error bringing up the hardware, so take it
2433                  * all the way back down so we can try again */
2434                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2435                 goto restart;
2436         }
2437
2438         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2439          * This is a paranoid check, because we would not have gotten the
2440          * "initialize" alive if code weren't properly loaded.  */
2441         if (iwl3945_verify_ucode(priv)) {
2442                 /* Runtime instruction load was bad;
2443                  * take it all the way back down so we can try again */
2444                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2445                 goto restart;
2446         }
2447
2448         /* Send pointers to protocol/runtime uCode image ... init code will
2449          * load and launch runtime uCode, which will send us another "Alive"
2450          * notification. */
2451         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2452         if (iwl3945_set_ucode_ptrs(priv)) {
2453                 /* Runtime instruction load won't happen;
2454                  * take it all the way back down so we can try again */
2455                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2456                 goto restart;
2457         }
2458         return;
2459
2460  restart:
2461         queue_work(priv->workqueue, &priv->restart);
2462 }
2463
2464 /**
2465  * iwl3945_alive_start - called after REPLY_ALIVE notification received
2466  *                   from protocol/runtime uCode (initialization uCode's
2467  *                   Alive gets handled by iwl3945_init_alive_start()).
2468  */
2469 static void iwl3945_alive_start(struct iwl_priv *priv)
2470 {
2471         int thermal_spin = 0;
2472         u32 rfkill;
2473
2474         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2475
2476         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2477                 /* We had an error bringing up the hardware, so take it
2478                  * all the way back down so we can try again */
2479                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2480                 goto restart;
2481         }
2482
2483         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2484          * This is a paranoid check, because we would not have gotten the
2485          * "runtime" alive if code weren't properly loaded.  */
2486         if (iwl3945_verify_ucode(priv)) {
2487                 /* Runtime instruction load was bad;
2488                  * take it all the way back down so we can try again */
2489                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2490                 goto restart;
2491         }
2492
2493         iwl_clear_stations_table(priv);
2494
2495         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2496         IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2497
2498         if (rfkill & 0x1) {
2499                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2500                 /* if RFKILL is not on, then wait for thermal
2501                  * sensor in adapter to kick in */
2502                 while (iwl3945_hw_get_temperature(priv) == 0) {
2503                         thermal_spin++;
2504                         udelay(10);
2505                 }
2506
2507                 if (thermal_spin)
2508                         IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2509                                        thermal_spin * 10);
2510         } else
2511                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2512
2513         /* After the ALIVE response, we can send commands to 3945 uCode */
2514         set_bit(STATUS_ALIVE, &priv->status);
2515
2516         if (iwl_is_rfkill(priv))
2517                 return;
2518
2519         ieee80211_wake_queues(priv->hw);
2520
2521         priv->active_rate = priv->rates_mask;
2522         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2523
2524         iwl_power_update_mode(priv, true);
2525
2526         if (iwl_is_associated(priv)) {
2527                 struct iwl3945_rxon_cmd *active_rxon =
2528                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2529
2530                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2531                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2532         } else {
2533                 /* Initialize our rx_config data */
2534                 iwl_connection_init_rx_config(priv, priv->iw_mode);
2535         }
2536
2537         /* Configure Bluetooth device coexistence support */
2538         iwl_send_bt_config(priv);
2539
2540         /* Configure the adapter for unassociated operation */
2541         iwlcore_commit_rxon(priv);
2542
2543         iwl3945_reg_txpower_periodic(priv);
2544
2545         iwl_leds_init(priv);
2546
2547         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2548         set_bit(STATUS_READY, &priv->status);
2549         wake_up_interruptible(&priv->wait_command_queue);
2550
2551         /* reassociate for ADHOC mode */
2552         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2553                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2554                                                                 priv->vif);
2555                 if (beacon)
2556                         iwl_mac_beacon_update(priv->hw, beacon);
2557         }
2558
2559         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2560                 iwl_set_mode(priv, priv->iw_mode);
2561
2562         return;
2563
2564  restart:
2565         queue_work(priv->workqueue, &priv->restart);
2566 }
2567
2568 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2569
2570 static void __iwl3945_down(struct iwl_priv *priv)
2571 {
2572         unsigned long flags;
2573         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2574         struct ieee80211_conf *conf = NULL;
2575
2576         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2577
2578         conf = ieee80211_get_hw_conf(priv->hw);
2579
2580         if (!exit_pending)
2581                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2582
2583         iwl_clear_stations_table(priv);
2584
2585         /* Unblock any waiting calls */
2586         wake_up_interruptible_all(&priv->wait_command_queue);
2587
2588         /* Wipe out the EXIT_PENDING status bit if we are not actually
2589          * exiting the module */
2590         if (!exit_pending)
2591                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2592
2593         /* stop and reset the on-board processor */
2594         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2595
2596         /* tell the device to stop sending interrupts */
2597         spin_lock_irqsave(&priv->lock, flags);
2598         iwl_disable_interrupts(priv);
2599         spin_unlock_irqrestore(&priv->lock, flags);
2600         iwl_synchronize_irq(priv);
2601
2602         if (priv->mac80211_registered)
2603                 ieee80211_stop_queues(priv->hw);
2604
2605         /* If we have not previously called iwl3945_init() then
2606          * clear all bits but the RF Kill bits and return */
2607         if (!iwl_is_init(priv)) {
2608                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2609                                         STATUS_RF_KILL_HW |
2610                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2611                                         STATUS_GEO_CONFIGURED |
2612                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2613                                         STATUS_EXIT_PENDING;
2614                 goto exit;
2615         }
2616
2617         /* ...otherwise clear out all the status bits but the RF Kill
2618          * bit and continue taking the NIC down. */
2619         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2620                                 STATUS_RF_KILL_HW |
2621                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2622                                 STATUS_GEO_CONFIGURED |
2623                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2624                                 STATUS_FW_ERROR |
2625                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2626                                 STATUS_EXIT_PENDING;
2627
2628         iwl3945_hw_txq_ctx_stop(priv);
2629         iwl3945_hw_rxq_stop(priv);
2630
2631         /* Power-down device's busmaster DMA clocks */
2632         iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2633         udelay(5);
2634
2635         /* Stop the device, and put it in low power state */
2636         priv->cfg->ops->lib->apm_ops.stop(priv);
2637
2638  exit:
2639         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2640
2641         if (priv->ibss_beacon)
2642                 dev_kfree_skb(priv->ibss_beacon);
2643         priv->ibss_beacon = NULL;
2644
2645         /* clear out any free frames */
2646         iwl3945_clear_free_frames(priv);
2647 }
2648
2649 static void iwl3945_down(struct iwl_priv *priv)
2650 {
2651         mutex_lock(&priv->mutex);
2652         __iwl3945_down(priv);
2653         mutex_unlock(&priv->mutex);
2654
2655         iwl3945_cancel_deferred_work(priv);
2656 }
2657
2658 #define MAX_HW_RESTARTS 5
2659
2660 static int __iwl3945_up(struct iwl_priv *priv)
2661 {
2662         int rc, i;
2663
2664         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2665                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2666                 return -EIO;
2667         }
2668
2669         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2670                 IWL_ERR(priv, "ucode not available for device bring up\n");
2671                 return -EIO;
2672         }
2673
2674         /* If platform's RF_KILL switch is NOT set to KILL */
2675         if (iwl_read32(priv, CSR_GP_CNTRL) &
2676                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2677                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2678         else {
2679                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2680                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2681                 return -ENODEV;
2682         }
2683
2684         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2685
2686         rc = iwl3945_hw_nic_init(priv);
2687         if (rc) {
2688                 IWL_ERR(priv, "Unable to int nic\n");
2689                 return rc;
2690         }
2691
2692         /* make sure rfkill handshake bits are cleared */
2693         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2694         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2695                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2696
2697         /* clear (again), then enable host interrupts */
2698         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2699         iwl_enable_interrupts(priv);
2700
2701         /* really make sure rfkill handshake bits are cleared */
2702         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2703         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2704
2705         /* Copy original ucode data image from disk into backup cache.
2706          * This will be used to initialize the on-board processor's
2707          * data SRAM for a clean start when the runtime program first loads. */
2708         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2709                priv->ucode_data.len);
2710
2711         /* We return success when we resume from suspend and rf_kill is on. */
2712         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2713                 return 0;
2714
2715         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2716
2717                 iwl_clear_stations_table(priv);
2718
2719                 /* load bootstrap state machine,
2720                  * load bootstrap program into processor's memory,
2721                  * prepare to load the "initialize" uCode */
2722                 priv->cfg->ops->lib->load_ucode(priv);
2723
2724                 if (rc) {
2725                         IWL_ERR(priv,
2726                                 "Unable to set up bootstrap uCode: %d\n", rc);
2727                         continue;
2728                 }
2729
2730                 /* start card; "initialize" will load runtime ucode */
2731                 iwl3945_nic_start(priv);
2732
2733                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2734
2735                 return 0;
2736         }
2737
2738         set_bit(STATUS_EXIT_PENDING, &priv->status);
2739         __iwl3945_down(priv);
2740         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2741
2742         /* tried to restart and config the device for as long as our
2743          * patience could withstand */
2744         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2745         return -EIO;
2746 }
2747
2748
2749 /*****************************************************************************
2750  *
2751  * Workqueue callbacks
2752  *
2753  *****************************************************************************/
2754
2755 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2756 {
2757         struct iwl_priv *priv =
2758             container_of(data, struct iwl_priv, init_alive_start.work);
2759
2760         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2761                 return;
2762
2763         mutex_lock(&priv->mutex);
2764         iwl3945_init_alive_start(priv);
2765         mutex_unlock(&priv->mutex);
2766 }
2767
2768 static void iwl3945_bg_alive_start(struct work_struct *data)
2769 {
2770         struct iwl_priv *priv =
2771             container_of(data, struct iwl_priv, alive_start.work);
2772
2773         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2774                 return;
2775
2776         mutex_lock(&priv->mutex);
2777         iwl3945_alive_start(priv);
2778         mutex_unlock(&priv->mutex);
2779 }
2780
2781 /*
2782  * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2783  * driver must poll CSR_GP_CNTRL_REG register for change.  This register
2784  * *is* readable even when device has been SW_RESET into low power mode
2785  * (e.g. during RF KILL).
2786  */
2787 static void iwl3945_rfkill_poll(struct work_struct *data)
2788 {
2789         struct iwl_priv *priv =
2790             container_of(data, struct iwl_priv, rfkill_poll.work);
2791         bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2792         bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2793                         & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2794
2795         if (new_rfkill != old_rfkill) {
2796                 if (new_rfkill)
2797                         set_bit(STATUS_RF_KILL_HW, &priv->status);
2798                 else
2799                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2800
2801                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2802
2803                 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2804                                 new_rfkill ? "disable radio" : "enable radio");
2805         }
2806
2807         /* Keep this running, even if radio now enabled.  This will be
2808          * cancelled in mac_start() if system decides to start again */
2809         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2810                            round_jiffies_relative(2 * HZ));
2811
2812 }
2813
2814 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2815 static void iwl3945_bg_request_scan(struct work_struct *data)
2816 {
2817         struct iwl_priv *priv =
2818             container_of(data, struct iwl_priv, request_scan);
2819         struct iwl_host_cmd cmd = {
2820                 .id = REPLY_SCAN_CMD,
2821                 .len = sizeof(struct iwl3945_scan_cmd),
2822                 .flags = CMD_SIZE_HUGE,
2823         };
2824         int rc = 0;
2825         struct iwl3945_scan_cmd *scan;
2826         struct ieee80211_conf *conf = NULL;
2827         u8 n_probes = 0;
2828         enum ieee80211_band band;
2829         bool is_active = false;
2830
2831         conf = ieee80211_get_hw_conf(priv->hw);
2832
2833         mutex_lock(&priv->mutex);
2834
2835         cancel_delayed_work(&priv->scan_check);
2836
2837         if (!iwl_is_ready(priv)) {
2838                 IWL_WARN(priv, "request scan called when driver not ready.\n");
2839                 goto done;
2840         }
2841
2842         /* Make sure the scan wasn't canceled before this queued work
2843          * was given the chance to run... */
2844         if (!test_bit(STATUS_SCANNING, &priv->status))
2845                 goto done;
2846
2847         /* This should never be called or scheduled if there is currently
2848          * a scan active in the hardware. */
2849         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2850                 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
2851                                 "Ignoring second request.\n");
2852                 rc = -EIO;
2853                 goto done;
2854         }
2855
2856         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2857                 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2858                 goto done;
2859         }
2860
2861         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2862                 IWL_DEBUG_HC(priv,
2863                         "Scan request while abort pending. Queuing.\n");
2864                 goto done;
2865         }
2866
2867         if (iwl_is_rfkill(priv)) {
2868                 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2869                 goto done;
2870         }
2871
2872         if (!test_bit(STATUS_READY, &priv->status)) {
2873                 IWL_DEBUG_HC(priv,
2874                         "Scan request while uninitialized. Queuing.\n");
2875                 goto done;
2876         }
2877
2878         if (!priv->scan_bands) {
2879                 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2880                 goto done;
2881         }
2882
2883         if (!priv->scan) {
2884                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2885                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2886                 if (!priv->scan) {
2887                         rc = -ENOMEM;
2888                         goto done;
2889                 }
2890         }
2891         scan = priv->scan;
2892         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2893
2894         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2895         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2896
2897         if (iwl_is_associated(priv)) {
2898                 u16 interval = 0;
2899                 u32 extra;
2900                 u32 suspend_time = 100;
2901                 u32 scan_suspend_time = 100;
2902                 unsigned long flags;
2903
2904                 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2905
2906                 spin_lock_irqsave(&priv->lock, flags);
2907                 interval = priv->beacon_int;
2908                 spin_unlock_irqrestore(&priv->lock, flags);
2909
2910                 scan->suspend_time = 0;
2911                 scan->max_out_time = cpu_to_le32(200 * 1024);
2912                 if (!interval)
2913                         interval = suspend_time;
2914                 /*
2915                  * suspend time format:
2916                  *  0-19: beacon interval in usec (time before exec.)
2917                  * 20-23: 0
2918                  * 24-31: number of beacons (suspend between channels)
2919                  */
2920
2921                 extra = (suspend_time / interval) << 24;
2922                 scan_suspend_time = 0xFF0FFFFF &
2923                     (extra | ((suspend_time % interval) * 1024));
2924
2925                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2926                 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2927                                scan_suspend_time, interval);
2928         }
2929
2930         if (priv->scan_request->n_ssids) {
2931                 int i, p = 0;
2932                 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2933                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2934                         /* always does wildcard anyway */
2935                         if (!priv->scan_request->ssids[i].ssid_len)
2936                                 continue;
2937                         scan->direct_scan[p].id = WLAN_EID_SSID;
2938                         scan->direct_scan[p].len =
2939                                 priv->scan_request->ssids[i].ssid_len;
2940                         memcpy(scan->direct_scan[p].ssid,
2941                                priv->scan_request->ssids[i].ssid,
2942                                priv->scan_request->ssids[i].ssid_len);
2943                         n_probes++;
2944                         p++;
2945                 }
2946                 is_active = true;
2947         } else
2948                 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2949
2950         /* We don't build a direct scan probe request; the uCode will do
2951          * that based on the direct_mask added to each channel entry */
2952         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2953         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2954         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2955
2956         /* flags + rate selection */
2957
2958         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2959                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2960                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2961                 scan->good_CRC_th = 0;
2962                 band = IEEE80211_BAND_2GHZ;
2963         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2964                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2965                 /*
2966                  * If active scaning is requested but a certain channel
2967                  * is marked passive, we can do active scanning if we
2968                  * detect transmissions.
2969                  */
2970                 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2971                 band = IEEE80211_BAND_5GHZ;
2972         } else {
2973                 IWL_WARN(priv, "Invalid scan band count\n");
2974                 goto done;
2975         }
2976
2977         scan->tx_cmd.len = cpu_to_le16(
2978                         iwl_fill_probe_req(priv,
2979                                 (struct ieee80211_mgmt *)scan->data,
2980                                 priv->scan_request->ie,
2981                                 priv->scan_request->ie_len,
2982                                 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2983
2984         /* select Rx antennas */
2985         scan->flags |= iwl3945_get_antenna_flags(priv);
2986
2987         if (iwl_is_monitor_mode(priv))
2988                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2989
2990         scan->channel_count =
2991                 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2992                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2993
2994         if (scan->channel_count == 0) {
2995                 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2996                 goto done;
2997         }
2998
2999         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3000             scan->channel_count * sizeof(struct iwl3945_scan_channel);
3001         cmd.data = scan;
3002         scan->len = cpu_to_le16(cmd.len);
3003
3004         set_bit(STATUS_SCAN_HW, &priv->status);
3005         rc = iwl_send_cmd_sync(priv, &cmd);
3006         if (rc)
3007                 goto done;
3008
3009         queue_delayed_work(priv->workqueue, &priv->scan_check,
3010                            IWL_SCAN_CHECK_WATCHDOG);
3011
3012         mutex_unlock(&priv->mutex);
3013         return;
3014
3015  done:
3016         /* can not perform scan make sure we clear scanning
3017          * bits from status so next scan request can be performed.
3018          * if we dont clear scanning status bit here all next scan
3019          * will fail
3020         */
3021         clear_bit(STATUS_SCAN_HW, &priv->status);
3022         clear_bit(STATUS_SCANNING, &priv->status);
3023
3024         /* inform mac80211 scan aborted */
3025         queue_work(priv->workqueue, &priv->scan_completed);
3026         mutex_unlock(&priv->mutex);
3027 }
3028
3029 static void iwl3945_bg_restart(struct work_struct *data)
3030 {
3031         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3032
3033         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3034                 return;
3035
3036         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3037                 mutex_lock(&priv->mutex);
3038                 priv->vif = NULL;
3039                 priv->is_open = 0;
3040                 mutex_unlock(&priv->mutex);
3041                 iwl3945_down(priv);
3042                 ieee80211_restart_hw(priv->hw);
3043         } else {
3044                 iwl3945_down(priv);
3045
3046                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3047                         return;
3048
3049                 mutex_lock(&priv->mutex);
3050                 __iwl3945_up(priv);
3051                 mutex_unlock(&priv->mutex);
3052         }
3053 }
3054
3055 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3056 {
3057         struct iwl_priv *priv =
3058             container_of(data, struct iwl_priv, rx_replenish);
3059
3060         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3061                 return;
3062
3063         mutex_lock(&priv->mutex);
3064         iwl3945_rx_replenish(priv);
3065         mutex_unlock(&priv->mutex);
3066 }
3067
3068 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3069
3070 void iwl3945_post_associate(struct iwl_priv *priv)
3071 {
3072         int rc = 0;
3073         struct ieee80211_conf *conf = NULL;
3074
3075         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3076                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3077                 return;
3078         }
3079
3080
3081         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3082                         priv->assoc_id, priv->active_rxon.bssid_addr);
3083
3084         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3085                 return;
3086
3087         if (!priv->vif || !priv->is_open)
3088                 return;
3089
3090         iwl_scan_cancel_timeout(priv, 200);
3091
3092         conf = ieee80211_get_hw_conf(priv->hw);
3093
3094         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3095         iwlcore_commit_rxon(priv);
3096
3097         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3098         iwl_setup_rxon_timing(priv);
3099         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3100                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3101         if (rc)
3102                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3103                             "Attempting to continue.\n");
3104
3105         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3106
3107         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3108
3109         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3110                         priv->assoc_id, priv->beacon_int);
3111
3112         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3113                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3114         else
3115                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3116
3117         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3118                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3119                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3120                 else
3121                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3122
3123                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3124                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3125
3126         }
3127
3128         iwlcore_commit_rxon(priv);
3129
3130         switch (priv->iw_mode) {
3131         case NL80211_IFTYPE_STATION:
3132                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3133                 break;
3134
3135         case NL80211_IFTYPE_ADHOC:
3136
3137                 priv->assoc_id = 1;
3138                 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3139                 iwl3945_sync_sta(priv, IWL_STA_ID,
3140                                  (priv->band == IEEE80211_BAND_5GHZ) ?
3141                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3142                                  CMD_ASYNC);
3143                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3144                 iwl3945_send_beacon_cmd(priv);
3145
3146                 break;
3147
3148         default:
3149                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
3150                            __func__, priv->iw_mode);
3151                 break;
3152         }
3153
3154         iwl_activate_qos(priv, 0);
3155
3156         /* we have just associated, don't start scan too early */
3157         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3158 }
3159
3160 /*****************************************************************************
3161  *
3162  * mac80211 entry point functions
3163  *
3164  *****************************************************************************/
3165
3166 #define UCODE_READY_TIMEOUT     (2 * HZ)
3167
3168 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3169 {
3170         struct iwl_priv *priv = hw->priv;
3171         int ret;
3172
3173         IWL_DEBUG_MAC80211(priv, "enter\n");
3174
3175         /* we should be verifying the device is ready to be opened */
3176         mutex_lock(&priv->mutex);
3177
3178         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3179          * ucode filename and max sizes are card-specific. */
3180
3181         if (!priv->ucode_code.len) {
3182                 ret = iwl3945_read_ucode(priv);
3183                 if (ret) {
3184                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3185                         mutex_unlock(&priv->mutex);
3186                         goto out_release_irq;
3187                 }
3188         }
3189
3190         ret = __iwl3945_up(priv);
3191
3192         mutex_unlock(&priv->mutex);
3193
3194         if (ret)
3195                 goto out_release_irq;
3196
3197         IWL_DEBUG_INFO(priv, "Start UP work.\n");
3198
3199         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3200          * mac80211 will not be run successfully. */
3201         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3202                         test_bit(STATUS_READY, &priv->status),
3203                         UCODE_READY_TIMEOUT);
3204         if (!ret) {
3205                 if (!test_bit(STATUS_READY, &priv->status)) {
3206                         IWL_ERR(priv,
3207                                 "Wait for START_ALIVE timeout after %dms.\n",
3208                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3209                         ret = -ETIMEDOUT;
3210                         goto out_release_irq;
3211                 }
3212         }
3213
3214         /* ucode is running and will send rfkill notifications,
3215          * no need to poll the killswitch state anymore */
3216         cancel_delayed_work(&priv->rfkill_poll);
3217
3218         iwl_led_start(priv);
3219
3220         priv->is_open = 1;
3221         IWL_DEBUG_MAC80211(priv, "leave\n");
3222         return 0;
3223
3224 out_release_irq:
3225         priv->is_open = 0;
3226         IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3227         return ret;
3228 }
3229
3230 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3231 {
3232         struct iwl_priv *priv = hw->priv;
3233
3234         IWL_DEBUG_MAC80211(priv, "enter\n");
3235
3236         if (!priv->is_open) {
3237                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3238                 return;
3239         }
3240
3241         priv->is_open = 0;
3242
3243         if (iwl_is_ready_rf(priv)) {
3244                 /* stop mac, cancel any scan request and clear
3245                  * RXON_FILTER_ASSOC_MSK BIT
3246                  */
3247                 mutex_lock(&priv->mutex);
3248                 iwl_scan_cancel_timeout(priv, 100);
3249                 mutex_unlock(&priv->mutex);
3250         }
3251
3252         iwl3945_down(priv);
3253
3254         flush_workqueue(priv->workqueue);
3255
3256         /* start polling the killswitch state again */
3257         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3258                            round_jiffies_relative(2 * HZ));
3259
3260         IWL_DEBUG_MAC80211(priv, "leave\n");
3261 }
3262
3263 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3264 {
3265         struct iwl_priv *priv = hw->priv;
3266
3267         IWL_DEBUG_MAC80211(priv, "enter\n");
3268
3269         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3270                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3271
3272         if (iwl3945_tx_skb(priv, skb))
3273                 dev_kfree_skb_any(skb);
3274
3275         IWL_DEBUG_MAC80211(priv, "leave\n");
3276         return NETDEV_TX_OK;
3277 }
3278
3279 void iwl3945_config_ap(struct iwl_priv *priv)
3280 {
3281         int rc = 0;
3282
3283         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3284                 return;
3285
3286         /* The following should be done only at AP bring up */
3287         if (!(iwl_is_associated(priv))) {
3288
3289                 /* RXON - unassoc (to set timing command) */
3290                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3291                 iwlcore_commit_rxon(priv);
3292
3293                 /* RXON Timing */
3294                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3295                 iwl_setup_rxon_timing(priv);
3296                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3297                                       sizeof(priv->rxon_timing),
3298                                       &priv->rxon_timing);
3299                 if (rc)
3300                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3301                                         "Attempting to continue.\n");
3302
3303                 /* FIXME: what should be the assoc_id for AP? */
3304                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3305                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3306                         priv->staging_rxon.flags |=
3307                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3308                 else
3309                         priv->staging_rxon.flags &=
3310                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3311
3312                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3313                         if (priv->assoc_capability &
3314                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3315                                 priv->staging_rxon.flags |=
3316                                         RXON_FLG_SHORT_SLOT_MSK;
3317                         else
3318                                 priv->staging_rxon.flags &=
3319                                         ~RXON_FLG_SHORT_SLOT_MSK;
3320
3321                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3322                                 priv->staging_rxon.flags &=
3323                                         ~RXON_FLG_SHORT_SLOT_MSK;
3324                 }
3325                 /* restore RXON assoc */
3326                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3327                 iwlcore_commit_rxon(priv);
3328                 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3329         }
3330         iwl3945_send_beacon_cmd(priv);
3331
3332         /* FIXME - we need to add code here to detect a totally new
3333          * configuration, reset the AP, unassoc, rxon timing, assoc,
3334          * clear sta table, add BCAST sta... */
3335 }
3336
3337 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3338                                struct ieee80211_vif *vif,
3339                                struct ieee80211_sta *sta,
3340                                struct ieee80211_key_conf *key)
3341 {
3342         struct iwl_priv *priv = hw->priv;
3343         const u8 *addr;
3344         int ret = 0;
3345         u8 sta_id = IWL_INVALID_STATION;
3346         u8 static_key;
3347
3348         IWL_DEBUG_MAC80211(priv, "enter\n");
3349
3350         if (iwl3945_mod_params.sw_crypto) {
3351                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3352                 return -EOPNOTSUPP;
3353         }
3354
3355         addr = sta ? sta->addr : iwl_bcast_addr;
3356         static_key = !iwl_is_associated(priv);
3357
3358         if (!static_key) {
3359                 sta_id = iwl_find_station(priv, addr);
3360                 if (sta_id == IWL_INVALID_STATION) {
3361                         IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3362                                             addr);
3363                         return -EINVAL;
3364                 }
3365         }
3366
3367         mutex_lock(&priv->mutex);
3368         iwl_scan_cancel_timeout(priv, 100);
3369         mutex_unlock(&priv->mutex);
3370
3371         switch (cmd) {
3372         case SET_KEY:
3373                 if (static_key)
3374                         ret = iwl3945_set_static_key(priv, key);
3375                 else
3376                         ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3377                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3378                 break;
3379         case DISABLE_KEY:
3380                 if (static_key)
3381                         ret = iwl3945_remove_static_key(priv);
3382                 else
3383                         ret = iwl3945_clear_sta_key_info(priv, sta_id);
3384                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3385                 break;
3386         default:
3387                 ret = -EINVAL;
3388         }
3389
3390         IWL_DEBUG_MAC80211(priv, "leave\n");
3391
3392         return ret;
3393 }
3394
3395 /*****************************************************************************
3396  *
3397  * sysfs attributes
3398  *
3399  *****************************************************************************/
3400
3401 #ifdef CONFIG_IWLWIFI_DEBUG
3402
3403 /*
3404  * The following adds a new attribute to the sysfs representation
3405  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3406  * used for controlling the debug level.
3407  *
3408  * See the level definitions in iwl for details.
3409  *
3410  * The debug_level being managed using sysfs below is a per device debug
3411  * level that is used instead of the global debug level if it (the per
3412  * device debug level) is set.
3413  */
3414 static ssize_t show_debug_level(struct device *d,
3415                                 struct device_attribute *attr, char *buf)
3416 {
3417         struct iwl_priv *priv = dev_get_drvdata(d);
3418         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3419 }
3420 static ssize_t store_debug_level(struct device *d,
3421                                 struct device_attribute *attr,
3422                                  const char *buf, size_t count)
3423 {
3424         struct iwl_priv *priv = dev_get_drvdata(d);
3425         unsigned long val;
3426         int ret;
3427
3428         ret = strict_strtoul(buf, 0, &val);
3429         if (ret)
3430                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3431         else {
3432                 priv->debug_level = val;
3433                 if (iwl_alloc_traffic_mem(priv))
3434                         IWL_ERR(priv,
3435                                 "Not enough memory to generate traffic log\n");
3436         }
3437         return strnlen(buf, count);
3438 }
3439
3440 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3441                         show_debug_level, store_debug_level);
3442
3443 #endif /* CONFIG_IWLWIFI_DEBUG */
3444
3445 static ssize_t show_temperature(struct device *d,
3446                                 struct device_attribute *attr, char *buf)
3447 {
3448         struct iwl_priv *priv = dev_get_drvdata(d);
3449
3450         if (!iwl_is_alive(priv))
3451                 return -EAGAIN;
3452
3453         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3454 }
3455
3456 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3457
3458 static ssize_t show_tx_power(struct device *d,
3459                              struct device_attribute *attr, char *buf)
3460 {
3461         struct iwl_priv *priv = dev_get_drvdata(d);
3462         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3463 }
3464
3465 static ssize_t store_tx_power(struct device *d,
3466                               struct device_attribute *attr,
3467                               const char *buf, size_t count)
3468 {
3469         struct iwl_priv *priv = dev_get_drvdata(d);
3470         char *p = (char *)buf;
3471         u32 val;
3472
3473         val = simple_strtoul(p, &p, 10);
3474         if (p == buf)
3475                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3476         else
3477                 iwl3945_hw_reg_set_txpower(priv, val);
3478
3479         return count;
3480 }
3481
3482 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3483
3484 static ssize_t show_flags(struct device *d,
3485                           struct device_attribute *attr, char *buf)
3486 {
3487         struct iwl_priv *priv = dev_get_drvdata(d);
3488
3489         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3490 }
3491
3492 static ssize_t store_flags(struct device *d,
3493                            struct device_attribute *attr,
3494                            const char *buf, size_t count)
3495 {
3496         struct iwl_priv *priv = dev_get_drvdata(d);
3497         u32 flags = simple_strtoul(buf, NULL, 0);
3498
3499         mutex_lock(&priv->mutex);
3500         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3501                 /* Cancel any currently running scans... */
3502                 if (iwl_scan_cancel_timeout(priv, 100))
3503                         IWL_WARN(priv, "Could not cancel scan.\n");
3504                 else {
3505                         IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3506                                        flags);
3507                         priv->staging_rxon.flags = cpu_to_le32(flags);
3508                         iwlcore_commit_rxon(priv);
3509                 }
3510         }
3511         mutex_unlock(&priv->mutex);
3512
3513         return count;
3514 }
3515
3516 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3517
3518 static ssize_t show_filter_flags(struct device *d,
3519                                  struct device_attribute *attr, char *buf)
3520 {
3521         struct iwl_priv *priv = dev_get_drvdata(d);
3522
3523         return sprintf(buf, "0x%04X\n",
3524                 le32_to_cpu(priv->active_rxon.filter_flags));
3525 }
3526
3527 static ssize_t store_filter_flags(struct device *d,
3528                                   struct device_attribute *attr,
3529                                   const char *buf, size_t count)
3530 {
3531         struct iwl_priv *priv = dev_get_drvdata(d);
3532         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3533
3534         mutex_lock(&priv->mutex);
3535         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3536                 /* Cancel any currently running scans... */
3537                 if (iwl_scan_cancel_timeout(priv, 100))
3538                         IWL_WARN(priv, "Could not cancel scan.\n");
3539                 else {
3540                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3541                                        "0x%04X\n", filter_flags);
3542                         priv->staging_rxon.filter_flags =
3543                                 cpu_to_le32(filter_flags);
3544                         iwlcore_commit_rxon(priv);
3545                 }
3546         }
3547         mutex_unlock(&priv->mutex);
3548
3549         return count;
3550 }
3551
3552 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3553                    store_filter_flags);
3554
3555 static ssize_t show_measurement(struct device *d,
3556                                 struct device_attribute *attr, char *buf)
3557 {
3558         struct iwl_priv *priv = dev_get_drvdata(d);
3559         struct iwl_spectrum_notification measure_report;
3560         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3561         u8 *data = (u8 *)&measure_report;
3562         unsigned long flags;
3563
3564         spin_lock_irqsave(&priv->lock, flags);
3565         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3566                 spin_unlock_irqrestore(&priv->lock, flags);
3567                 return 0;
3568         }
3569         memcpy(&measure_report, &priv->measure_report, size);
3570         priv->measurement_status = 0;
3571         spin_unlock_irqrestore(&priv->lock, flags);
3572
3573         while (size && (PAGE_SIZE - len)) {
3574                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3575                                    PAGE_SIZE - len, 1);
3576                 len = strlen(buf);
3577                 if (PAGE_SIZE - len)
3578                         buf[len++] = '\n';
3579
3580                 ofs += 16;
3581                 size -= min(size, 16U);
3582         }
3583
3584         return len;
3585 }
3586
3587 static ssize_t store_measurement(struct device *d,
3588                                  struct device_attribute *attr,
3589                                  const char *buf, size_t count)
3590 {
3591         struct iwl_priv *priv = dev_get_drvdata(d);
3592         struct ieee80211_measurement_params params = {
3593                 .channel = le16_to_cpu(priv->active_rxon.channel),
3594                 .start_time = cpu_to_le64(priv->last_tsf),
3595                 .duration = cpu_to_le16(1),
3596         };
3597         u8 type = IWL_MEASURE_BASIC;
3598         u8 buffer[32];
3599         u8 channel;
3600
3601         if (count) {
3602                 char *p = buffer;
3603                 strncpy(buffer, buf, min(sizeof(buffer), count));
3604                 channel = simple_strtoul(p, NULL, 0);
3605                 if (channel)
3606                         params.channel = channel;
3607
3608                 p = buffer;
3609                 while (*p && *p != ' ')
3610                         p++;
3611                 if (*p)
3612                         type = simple_strtoul(p + 1, NULL, 0);
3613         }
3614
3615         IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3616                        "channel %d (for '%s')\n", type, params.channel, buf);
3617         iwl3945_get_measurement(priv, &params, type);
3618
3619         return count;
3620 }
3621
3622 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3623                    show_measurement, store_measurement);
3624
3625 static ssize_t store_retry_rate(struct device *d,
3626                                 struct device_attribute *attr,
3627                                 const char *buf, size_t count)
3628 {
3629         struct iwl_priv *priv = dev_get_drvdata(d);
3630
3631         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3632         if (priv->retry_rate <= 0)
3633                 priv->retry_rate = 1;
3634
3635         return count;
3636 }
3637
3638 static ssize_t show_retry_rate(struct device *d,
3639                                struct device_attribute *attr, char *buf)
3640 {
3641         struct iwl_priv *priv = dev_get_drvdata(d);
3642         return sprintf(buf, "%d", priv->retry_rate);
3643 }
3644
3645 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3646                    store_retry_rate);
3647
3648
3649 static ssize_t show_channels(struct device *d,
3650                              struct device_attribute *attr, char *buf)
3651 {
3652         /* all this shit doesn't belong into sysfs anyway */
3653         return 0;
3654 }
3655
3656 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3657
3658 static ssize_t show_statistics(struct device *d,
3659                                struct device_attribute *attr, char *buf)
3660 {
3661         struct iwl_priv *priv = dev_get_drvdata(d);
3662         u32 size = sizeof(struct iwl3945_notif_statistics);
3663         u32 len = 0, ofs = 0;
3664         u8 *data = (u8 *)&priv->statistics_39;
3665         int rc = 0;
3666
3667         if (!iwl_is_alive(priv))
3668                 return -EAGAIN;
3669
3670         mutex_lock(&priv->mutex);
3671         rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3672         mutex_unlock(&priv->mutex);
3673
3674         if (rc) {
3675                 len = sprintf(buf,
3676                               "Error sending statistics request: 0x%08X\n", rc);
3677                 return len;
3678         }
3679
3680         while (size && (PAGE_SIZE - len)) {
3681                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3682                                    PAGE_SIZE - len, 1);
3683                 len = strlen(buf);
3684                 if (PAGE_SIZE - len)
3685                         buf[len++] = '\n';
3686
3687                 ofs += 16;
3688                 size -= min(size, 16U);
3689         }
3690
3691         return len;
3692 }
3693
3694 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3695
3696 static ssize_t show_antenna(struct device *d,
3697                             struct device_attribute *attr, char *buf)
3698 {
3699         struct iwl_priv *priv = dev_get_drvdata(d);
3700
3701         if (!iwl_is_alive(priv))
3702                 return -EAGAIN;
3703
3704         return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3705 }
3706
3707 static ssize_t store_antenna(struct device *d,
3708                              struct device_attribute *attr,
3709                              const char *buf, size_t count)
3710 {
3711         struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3712         int ant;
3713
3714         if (count == 0)
3715                 return 0;
3716
3717         if (sscanf(buf, "%1i", &ant) != 1) {
3718                 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3719                 return count;
3720         }
3721
3722         if ((ant >= 0) && (ant <= 2)) {
3723                 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3724                 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3725         } else
3726                 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3727
3728
3729         return count;
3730 }
3731
3732 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3733
3734 static ssize_t show_status(struct device *d,
3735                            struct device_attribute *attr, char *buf)
3736 {
3737         struct iwl_priv *priv = dev_get_drvdata(d);
3738         if (!iwl_is_alive(priv))
3739                 return -EAGAIN;
3740         return sprintf(buf, "0x%08x\n", (int)priv->status);
3741 }
3742
3743 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3744
3745 static ssize_t dump_error_log(struct device *d,
3746                               struct device_attribute *attr,
3747                               const char *buf, size_t count)
3748 {
3749         struct iwl_priv *priv = dev_get_drvdata(d);
3750         char *p = (char *)buf;
3751
3752         if (p[0] == '1')
3753                 iwl3945_dump_nic_error_log(priv);
3754
3755         return strnlen(buf, count);
3756 }
3757
3758 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3759
3760 /*****************************************************************************
3761  *
3762  * driver setup and tear down
3763  *
3764  *****************************************************************************/
3765
3766 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3767 {
3768         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3769
3770         init_waitqueue_head(&priv->wait_command_queue);
3771
3772         INIT_WORK(&priv->restart, iwl3945_bg_restart);
3773         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3774         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3775         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3776         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3777         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3778         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3779         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3780         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3781         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3782
3783         iwl3945_hw_setup_deferred_work(priv);
3784
3785         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3786                      iwl3945_irq_tasklet, (unsigned long)priv);
3787 }
3788
3789 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3790 {
3791         iwl3945_hw_cancel_deferred_work(priv);
3792
3793         cancel_delayed_work_sync(&priv->init_alive_start);
3794         cancel_delayed_work(&priv->scan_check);
3795         cancel_delayed_work(&priv->alive_start);
3796         cancel_work_sync(&priv->beacon_update);
3797 }
3798
3799 static struct attribute *iwl3945_sysfs_entries[] = {
3800         &dev_attr_antenna.attr,
3801         &dev_attr_channels.attr,
3802         &dev_attr_dump_errors.attr,
3803         &dev_attr_flags.attr,
3804         &dev_attr_filter_flags.attr,
3805         &dev_attr_measurement.attr,
3806         &dev_attr_retry_rate.attr,
3807         &dev_attr_statistics.attr,
3808         &dev_attr_status.attr,
3809         &dev_attr_temperature.attr,
3810         &dev_attr_tx_power.attr,
3811 #ifdef CONFIG_IWLWIFI_DEBUG
3812         &dev_attr_debug_level.attr,
3813 #endif
3814         NULL
3815 };
3816
3817 static struct attribute_group iwl3945_attribute_group = {
3818         .name = NULL,           /* put in device directory */
3819         .attrs = iwl3945_sysfs_entries,
3820 };
3821
3822 static struct ieee80211_ops iwl3945_hw_ops = {
3823         .tx = iwl3945_mac_tx,
3824         .start = iwl3945_mac_start,
3825         .stop = iwl3945_mac_stop,
3826         .add_interface = iwl_mac_add_interface,
3827         .remove_interface = iwl_mac_remove_interface,
3828         .config = iwl_mac_config,
3829         .configure_filter = iwl_configure_filter,
3830         .set_key = iwl3945_mac_set_key,
3831         .conf_tx = iwl_mac_conf_tx,
3832         .reset_tsf = iwl_mac_reset_tsf,
3833         .bss_info_changed = iwl_bss_info_changed,
3834         .hw_scan = iwl_mac_hw_scan
3835 };
3836
3837 static int iwl3945_init_drv(struct iwl_priv *priv)
3838 {
3839         int ret;
3840         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3841
3842         priv->retry_rate = 1;
3843         priv->ibss_beacon = NULL;
3844
3845         spin_lock_init(&priv->sta_lock);
3846         spin_lock_init(&priv->hcmd_lock);
3847
3848         INIT_LIST_HEAD(&priv->free_frames);
3849
3850         mutex_init(&priv->mutex);
3851         mutex_init(&priv->sync_cmd_mutex);
3852
3853         /* Clear the driver's (not device's) station table */
3854         iwl_clear_stations_table(priv);
3855
3856         priv->ieee_channels = NULL;
3857         priv->ieee_rates = NULL;
3858         priv->band = IEEE80211_BAND_2GHZ;
3859
3860         priv->iw_mode = NL80211_IFTYPE_STATION;
3861         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3862
3863         iwl_reset_qos(priv);
3864
3865         priv->qos_data.qos_active = 0;
3866         priv->qos_data.qos_cap.val = 0;
3867
3868         priv->rates_mask = IWL_RATES_MASK;
3869         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3870
3871         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3872                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3873                          eeprom->version);
3874                 ret = -EINVAL;
3875                 goto err;
3876         }
3877         ret = iwl_init_channel_map(priv);
3878         if (ret) {
3879                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3880                 goto err;
3881         }
3882
3883         /* Set up txpower settings in driver for all channels */
3884         if (iwl3945_txpower_set_from_eeprom(priv)) {
3885                 ret = -EIO;
3886                 goto err_free_channel_map;
3887         }
3888
3889         ret = iwlcore_init_geos(priv);
3890         if (ret) {
3891                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3892                 goto err_free_channel_map;
3893         }
3894         iwl3945_init_hw_rates(priv, priv->ieee_rates);
3895
3896         return 0;
3897
3898 err_free_channel_map:
3899         iwl_free_channel_map(priv);
3900 err:
3901         return ret;
3902 }
3903
3904 static int iwl3945_setup_mac(struct iwl_priv *priv)
3905 {
3906         int ret;
3907         struct ieee80211_hw *hw = priv->hw;
3908
3909         hw->rate_control_algorithm = "iwl-3945-rs";
3910         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3911
3912         /* Tell mac80211 our characteristics */
3913         hw->flags = IEEE80211_HW_SIGNAL_DBM |
3914                     IEEE80211_HW_NOISE_DBM |
3915                     IEEE80211_HW_SPECTRUM_MGMT;
3916
3917         if (!priv->cfg->broken_powersave)
3918                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3919                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3920
3921         hw->wiphy->interface_modes =
3922                 BIT(NL80211_IFTYPE_STATION) |
3923                 BIT(NL80211_IFTYPE_ADHOC);
3924
3925         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3926                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
3927
3928         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3929         /* we create the 802.11 header and a zero-length SSID element */
3930         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3931
3932         /* Default value; 4 EDCA QOS priorities */
3933         hw->queues = 4;
3934
3935         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3936                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3937                         &priv->bands[IEEE80211_BAND_2GHZ];
3938
3939         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3940                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3941                         &priv->bands[IEEE80211_BAND_5GHZ];
3942
3943         ret = ieee80211_register_hw(priv->hw);
3944         if (ret) {
3945                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3946                 return ret;
3947         }
3948         priv->mac80211_registered = 1;
3949
3950         return 0;
3951 }
3952
3953 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3954 {
3955         int err = 0;
3956         struct iwl_priv *priv;
3957         struct ieee80211_hw *hw;
3958         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3959         struct iwl3945_eeprom *eeprom;
3960         unsigned long flags;
3961
3962         /***********************
3963          * 1. Allocating HW data
3964          * ********************/
3965
3966         /* mac80211 allocates memory for this device instance, including
3967          *   space for this driver's private structure */
3968         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3969         if (hw == NULL) {
3970                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3971                 err = -ENOMEM;
3972                 goto out;
3973         }
3974         priv = hw->priv;
3975         SET_IEEE80211_DEV(hw, &pdev->dev);
3976
3977         /*
3978          * Disabling hardware scan means that mac80211 will perform scans
3979          * "the hard way", rather than using device's scan.
3980          */
3981         if (iwl3945_mod_params.disable_hw_scan) {
3982                 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3983                 iwl3945_hw_ops.hw_scan = NULL;
3984         }
3985
3986
3987         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3988         priv->cfg = cfg;
3989         priv->pci_dev = pdev;
3990         priv->inta_mask = CSR_INI_SET_MASK;
3991
3992 #ifdef CONFIG_IWLWIFI_DEBUG
3993         atomic_set(&priv->restrict_refcnt, 0);
3994 #endif
3995         if (iwl_alloc_traffic_mem(priv))
3996                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3997
3998         /***************************
3999          * 2. Initializing PCI bus
4000          * *************************/
4001         if (pci_enable_device(pdev)) {
4002                 err = -ENODEV;
4003                 goto out_ieee80211_free_hw;
4004         }
4005
4006         pci_set_master(pdev);
4007
4008         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4009         if (!err)
4010                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4011         if (err) {
4012                 IWL_WARN(priv, "No suitable DMA available.\n");
4013                 goto out_pci_disable_device;
4014         }
4015
4016         pci_set_drvdata(pdev, priv);
4017         err = pci_request_regions(pdev, DRV_NAME);
4018         if (err)
4019                 goto out_pci_disable_device;
4020
4021         /***********************
4022          * 3. Read REV Register
4023          * ********************/
4024         priv->hw_base = pci_iomap(pdev, 0, 0);
4025         if (!priv->hw_base) {
4026                 err = -ENODEV;
4027                 goto out_pci_release_regions;
4028         }
4029
4030         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4031                         (unsigned long long) pci_resource_len(pdev, 0));
4032         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4033
4034         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4035          * PCI Tx retries from interfering with C3 CPU state */
4036         pci_write_config_byte(pdev, 0x41, 0x00);
4037
4038         /* these spin locks will be used in apm_ops.init and EEPROM access
4039          * we should init now
4040          */
4041         spin_lock_init(&priv->reg_lock);
4042         spin_lock_init(&priv->lock);
4043
4044         /*
4045          * stop and reset the on-board processor just in case it is in a
4046          * strange state ... like being left stranded by a primary kernel
4047          * and this is now the kdump kernel trying to start up
4048          */
4049         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4050
4051         /***********************
4052          * 4. Read EEPROM
4053          * ********************/
4054
4055         /* Read the EEPROM */
4056         err = iwl_eeprom_init(priv);
4057         if (err) {
4058                 IWL_ERR(priv, "Unable to init EEPROM\n");
4059                 goto out_iounmap;
4060         }
4061         /* MAC Address location in EEPROM same for 3945/4965 */
4062         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4063         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4064         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4065         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4066
4067         /***********************
4068          * 5. Setup HW Constants
4069          * ********************/
4070         /* Device-specific setup */
4071         if (iwl3945_hw_set_hw_params(priv)) {
4072                 IWL_ERR(priv, "failed to set hw settings\n");
4073                 goto out_eeprom_free;
4074         }
4075
4076         /***********************
4077          * 6. Setup priv
4078          * ********************/
4079
4080         err = iwl3945_init_drv(priv);
4081         if (err) {
4082                 IWL_ERR(priv, "initializing driver failed\n");
4083                 goto out_unset_hw_params;
4084         }
4085
4086         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4087                 priv->cfg->name);
4088
4089         /***********************
4090          * 7. Setup Services
4091          * ********************/
4092
4093         spin_lock_irqsave(&priv->lock, flags);
4094         iwl_disable_interrupts(priv);
4095         spin_unlock_irqrestore(&priv->lock, flags);
4096
4097         pci_enable_msi(priv->pci_dev);
4098
4099         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4100                           IRQF_SHARED, DRV_NAME, priv);
4101         if (err) {
4102                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4103                 goto out_disable_msi;
4104         }
4105
4106         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4107         if (err) {
4108                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4109                 goto out_release_irq;
4110         }
4111
4112         iwl_set_rxon_channel(priv,
4113                              &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4114         iwl3945_setup_deferred_work(priv);
4115         iwl3945_setup_rx_handlers(priv);
4116         iwl_power_initialize(priv);
4117
4118         /*********************************
4119          * 8. Setup and Register mac80211
4120          * *******************************/
4121
4122         iwl_enable_interrupts(priv);
4123
4124         err = iwl3945_setup_mac(priv);
4125         if (err)
4126                 goto  out_remove_sysfs;
4127
4128         err = iwl_dbgfs_register(priv, DRV_NAME);
4129         if (err)
4130                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4131
4132         /* Start monitoring the killswitch */
4133         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4134                            2 * HZ);
4135
4136         return 0;
4137
4138  out_remove_sysfs:
4139         destroy_workqueue(priv->workqueue);
4140         priv->workqueue = NULL;
4141         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4142  out_release_irq:
4143         free_irq(priv->pci_dev->irq, priv);
4144  out_disable_msi:
4145         pci_disable_msi(priv->pci_dev);
4146         iwlcore_free_geos(priv);
4147         iwl_free_channel_map(priv);
4148  out_unset_hw_params:
4149         iwl3945_unset_hw_params(priv);
4150  out_eeprom_free:
4151         iwl_eeprom_free(priv);
4152  out_iounmap:
4153         pci_iounmap(pdev, priv->hw_base);
4154  out_pci_release_regions:
4155         pci_release_regions(pdev);
4156  out_pci_disable_device:
4157         pci_set_drvdata(pdev, NULL);
4158         pci_disable_device(pdev);
4159  out_ieee80211_free_hw:
4160         iwl_free_traffic_mem(priv);
4161         ieee80211_free_hw(priv->hw);
4162  out:
4163         return err;
4164 }
4165
4166 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4167 {
4168         struct iwl_priv *priv = pci_get_drvdata(pdev);
4169         unsigned long flags;
4170
4171         if (!priv)
4172                 return;
4173
4174         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4175
4176         iwl_dbgfs_unregister(priv);
4177
4178         set_bit(STATUS_EXIT_PENDING, &priv->status);
4179
4180         if (priv->mac80211_registered) {
4181                 ieee80211_unregister_hw(priv->hw);
4182                 priv->mac80211_registered = 0;
4183         } else {
4184                 iwl3945_down(priv);
4185         }
4186
4187         /*
4188          * Make sure device is reset to low power before unloading driver.
4189          * This may be redundant with iwl_down(), but there are paths to
4190          * run iwl_down() without calling apm_ops.stop(), and there are
4191          * paths to avoid running iwl_down() at all before leaving driver.
4192          * This (inexpensive) call *makes sure* device is reset.
4193          */
4194         priv->cfg->ops->lib->apm_ops.stop(priv);
4195
4196         /* make sure we flush any pending irq or
4197          * tasklet for the driver
4198          */
4199         spin_lock_irqsave(&priv->lock, flags);
4200         iwl_disable_interrupts(priv);
4201         spin_unlock_irqrestore(&priv->lock, flags);
4202
4203         iwl_synchronize_irq(priv);
4204
4205         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4206
4207         cancel_delayed_work_sync(&priv->rfkill_poll);
4208
4209         iwl3945_dealloc_ucode_pci(priv);
4210
4211         if (priv->rxq.bd)
4212                 iwl3945_rx_queue_free(priv, &priv->rxq);
4213         iwl3945_hw_txq_ctx_free(priv);
4214
4215         iwl3945_unset_hw_params(priv);
4216         iwl_clear_stations_table(priv);
4217
4218         /*netif_stop_queue(dev); */
4219         flush_workqueue(priv->workqueue);
4220
4221         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4222          * priv->workqueue... so we can't take down the workqueue
4223          * until now... */
4224         destroy_workqueue(priv->workqueue);
4225         priv->workqueue = NULL;
4226         iwl_free_traffic_mem(priv);
4227
4228         free_irq(pdev->irq, priv);
4229         pci_disable_msi(pdev);
4230
4231         pci_iounmap(pdev, priv->hw_base);
4232         pci_release_regions(pdev);
4233         pci_disable_device(pdev);
4234         pci_set_drvdata(pdev, NULL);
4235
4236         iwl_free_channel_map(priv);
4237         iwlcore_free_geos(priv);
4238         kfree(priv->scan);
4239         if (priv->ibss_beacon)
4240                 dev_kfree_skb(priv->ibss_beacon);
4241
4242         ieee80211_free_hw(priv->hw);
4243 }
4244
4245
4246 /*****************************************************************************
4247  *
4248  * driver and module entry point
4249  *
4250  *****************************************************************************/
4251
4252 static struct pci_driver iwl3945_driver = {
4253         .name = DRV_NAME,
4254         .id_table = iwl3945_hw_card_ids,
4255         .probe = iwl3945_pci_probe,
4256         .remove = __devexit_p(iwl3945_pci_remove),
4257 #ifdef CONFIG_PM
4258         .suspend = iwl_pci_suspend,
4259         .resume = iwl_pci_resume,
4260 #endif
4261 };
4262
4263 static int __init iwl3945_init(void)
4264 {
4265
4266         int ret;
4267         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4268         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4269
4270         ret = iwl3945_rate_control_register();
4271         if (ret) {
4272                 printk(KERN_ERR DRV_NAME
4273                        "Unable to register rate control algorithm: %d\n", ret);
4274                 return ret;
4275         }
4276
4277         ret = pci_register_driver(&iwl3945_driver);
4278         if (ret) {
4279                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4280                 goto error_register;
4281         }
4282
4283         return ret;
4284
4285 error_register:
4286         iwl3945_rate_control_unregister();
4287         return ret;
4288 }
4289
4290 static void __exit iwl3945_exit(void)
4291 {
4292         pci_unregister_driver(&iwl3945_driver);
4293         iwl3945_rate_control_unregister();
4294 }
4295
4296 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4297
4298 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4299 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4300 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4301 MODULE_PARM_DESC(swcrypto,
4302                  "using software crypto (default 1 [software])\n");
4303 #ifdef CONFIG_IWLWIFI_DEBUG
4304 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4305 MODULE_PARM_DESC(debug, "debug output mask");
4306 #endif
4307 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4308                    int, S_IRUGO);
4309 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4310 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4311 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4312
4313 module_exit(iwl3945_exit);
4314 module_init(iwl3945_init);