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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #define DRV_NAME        "iwlagn"
  48
  49 #include "iwl-eeprom.h"
  50 #include "iwl-dev.h"
  51 #include "iwl-core.h"
  52 #include "iwl-io.h"
  53 #include "iwl-helpers.h"
  54 #include "iwl-sta.h"
  55 #include "iwl-calib.h"
  56
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /*
  65  * module name, copyright, version, etc.
  66  */
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97 /**
  98  * iwl_commit_rxon - commit staging_rxon to hardware
  99  *
 100  * The RXON command in staging_rxon is committed to the hardware and
 101  * the active_rxon structure is updated with the new data.  This
 102  * function correctly transitions out of the RXON_ASSOC_MSK state if
 103  * a HW tune is required based on the RXON structure changes.
 104  */
 105 int iwl_commit_rxon(struct iwl_priv *priv)
 106 {
 107         /* cast away the const for active_rxon in this function */
 108         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 109         int ret;
 110         bool new_assoc =
 111                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 112
 113         if (!iwl_is_alive(priv))
 114                 return -EBUSY;
 115
 116         /* always get timestamp with Rx frame */
 117         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 118
 119         ret = iwl_check_rxon_cmd(priv);
 120         if (ret) {
 121                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 122                 return -EINVAL;
 123         }
 124
 125         /* If we don't need to send a full RXON, we can use
 126          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 127          * and other flags for the current radio configuration. */
 128         if (!iwl_full_rxon_required(priv)) {
 129                 ret = iwl_send_rxon_assoc(priv);
 130                 if (ret) {
 131                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 132                         return ret;
 133                 }
 134
 135                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 136                 return 0;
 137         }
 138
 139         /* station table will be cleared */
 140         priv->assoc_station_added = 0;
 141
 142         /* If we are currently associated and the new config requires
 143          * an RXON_ASSOC and the new config wants the associated mask enabled,
 144          * we must clear the associated from the active configuration
 145          * before we apply the new config */
 146         if (iwl_is_associated(priv) && new_assoc) {
 147                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 148                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 149
 150                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 151                                       sizeof(struct iwl_rxon_cmd),
 152                                       &priv->active_rxon);
 153
 154                 /* If the mask clearing failed then we set
 155                  * active_rxon back to what it was previously */
 156                 if (ret) {
 157                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 158                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 159                         return ret;
 160                 }
 161         }
 162
 163         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 164                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 165                        "* channel = %d\n"
 166                        "* bssid = %pM\n",
 167                        (new_assoc ? "" : "out"),
 168                        le16_to_cpu(priv->staging_rxon.channel),
 169                        priv->staging_rxon.bssid_addr);
 170
 171         iwl_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
 172
 173         /* Apply the new configuration
 174          * RXON unassoc clears the station table in uCode, send it before
 175          * we add the bcast station. If assoc bit is set, we will send RXON
 176          * after having added the bcast and bssid station.
 177          */
 178         if (!new_assoc) {
 179                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 180                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 181                 if (ret) {
 182                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 183                         return ret;
 184                 }
 185                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 186         }
 187
 188         iwl_clear_stations_table(priv);
 189
 190         priv->start_calib = 0;
 191
 192         /* Add the broadcast address so we can send broadcast frames */
 193         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 194                                                 IWL_INVALID_STATION) {
 195                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 196                 return -EIO;
 197         }
 198
 199         /* If we have set the ASSOC_MSK and we are in BSS mode then
 200          * add the IWL_AP_ID to the station rate table */
 201         if (new_assoc) {
 202                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 203                         ret = iwl_rxon_add_station(priv,
 204                                            priv->active_rxon.bssid_addr, 1);
 205                         if (ret == IWL_INVALID_STATION) {
 206                                 IWL_ERR(priv,
 207                                         "Error adding AP address for TX.\n");
 208                                 return -EIO;
 209                         }
 210                         priv->assoc_station_added = 1;
 211                         if (priv->default_wep_key &&
 212                             iwl_send_static_wepkey_cmd(priv, 0))
 213                                 IWL_ERR(priv,
 214                                         "Could not send WEP static key.\n");
 215                 }
 216
 217                 /*
 218                  * allow CTS-to-self if possible for new association.
 219                  * this is relevant only for 5000 series and up,
 220                  * but will not damage 4965
 221                  */
 222                 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 223
 224                 /* Apply the new configuration
 225                  * RXON assoc doesn't clear the station table in uCode,
 226                  */
 227                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 228                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 229                 if (ret) {
 230                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 231                         return ret;
 232                 }
 233                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 234         }
 235
 236         iwl_init_sensitivity(priv);
 237
 238         /* If we issue a new RXON command which required a tune then we must
 239          * send a new TXPOWER command or we won't be able to Tx any frames */
 240         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 241         if (ret) {
 242                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 243                 return ret;
 244         }
 245
 246         return 0;
 247 }
 248
 249 void iwl_update_chain_flags(struct iwl_priv *priv)
 250 {
 251
 252         if (priv->cfg->ops->hcmd->set_rxon_chain)
 253                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 254         iwlcore_commit_rxon(priv);
 255 }
 256
 257 static void iwl_clear_free_frames(struct iwl_priv *priv)
 258 {
 259         struct list_head *element;
 260
 261         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 262                        priv->frames_count);
 263
 264         while (!list_empty(&priv->free_frames)) {
 265                 element = priv->free_frames.next;
 266                 list_del(element);
 267                 kfree(list_entry(element, struct iwl_frame, list));
 268                 priv->frames_count--;
 269         }
 270
 271         if (priv->frames_count) {
 272                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 273                             priv->frames_count);
 274                 priv->frames_count = 0;
 275         }
 276 }
 277
 278 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 279 {
 280         struct iwl_frame *frame;
 281         struct list_head *element;
 282         if (list_empty(&priv->free_frames)) {
 283                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 284                 if (!frame) {
 285                         IWL_ERR(priv, "Could not allocate frame!\n");
 286                         return NULL;
 287                 }
 288
 289                 priv->frames_count++;
 290                 return frame;
 291         }
 292
 293         element = priv->free_frames.next;
 294         list_del(element);
 295         return list_entry(element, struct iwl_frame, list);
 296 }
 297
 298 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 299 {
 300         memset(frame, 0, sizeof(*frame));
 301         list_add(&frame->list, &priv->free_frames);
 302 }
 303
 304 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 305                                           struct ieee80211_hdr *hdr,
 306                                           int left)
 307 {
 308         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 309             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 310              (priv->iw_mode != NL80211_IFTYPE_AP)))
 311                 return 0;
 312
 313         if (priv->ibss_beacon->len > left)
 314                 return 0;
 315
 316         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 317
 318         return priv->ibss_beacon->len;
 319 }
 320
 321 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 322                                        struct iwl_frame *frame, u8 rate)
 323 {
 324         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 325         unsigned int frame_size;
 326
 327         tx_beacon_cmd = &frame->u.beacon;
 328         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 329
 330         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 331         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 332
 333         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 334                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 335
 336         BUG_ON(frame_size > MAX_MPDU_SIZE);
 337         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 338
 339         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 340                 tx_beacon_cmd->tx.rate_n_flags =
 341                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 342         else
 343                 tx_beacon_cmd->tx.rate_n_flags =
 344                         iwl_hw_set_rate_n_flags(rate, 0);
 345
 346         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 347                                      TX_CMD_FLG_TSF_MSK |
 348                                      TX_CMD_FLG_STA_RATE_MSK;
 349
 350         return sizeof(*tx_beacon_cmd) + frame_size;
 351 }
 352 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 353 {
 354         struct iwl_frame *frame;
 355         unsigned int frame_size;
 356         int rc;
 357         u8 rate;
 358
 359         frame = iwl_get_free_frame(priv);
 360
 361         if (!frame) {
 362                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 363                           "command.\n");
 364                 return -ENOMEM;
 365         }
 366
 367         rate = iwl_rate_get_lowest_plcp(priv);
 368
 369         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 370
 371         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 372                               &frame->u.cmd[0]);
 373
 374         iwl_free_frame(priv, frame);
 375
 376         return rc;
 377 }
 378
 379 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 380 {
 381         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 382
 383         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 384         if (sizeof(dma_addr_t) > sizeof(u32))
 385                 addr |=
 386                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 387
 388         return addr;
 389 }
 390
 391 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 392 {
 393         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 394
 395         return le16_to_cpu(tb->hi_n_len) >> 4;
 396 }
 397
 398 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 399                                   dma_addr_t addr, u16 len)
 400 {
 401         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 402         u16 hi_n_len = len << 4;
 403
 404         put_unaligned_le32(addr, &tb->lo);
 405         if (sizeof(dma_addr_t) > sizeof(u32))
 406                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 407
 408         tb->hi_n_len = cpu_to_le16(hi_n_len);
 409
 410         tfd->num_tbs = idx + 1;
 411 }
 412
 413 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 414 {
 415         return tfd->num_tbs & 0x1f;
 416 }
 417
 418 /**
 419  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 420  * @priv - driver private data
 421  * @txq - tx queue
 422  *
 423  * Does NOT advance any TFD circular buffer read/write indexes
 424  * Does NOT free the TFD itself (which is within circular buffer)
 425  */
 426 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 427 {
 428         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 429         struct iwl_tfd *tfd;
 430         struct pci_dev *dev = priv->pci_dev;
 431         int index = txq->q.read_ptr;
 432         int i;
 433         int num_tbs;
 434
 435         tfd = &tfd_tmp[index];
 436
 437         /* Sanity check on number of chunks */
 438         num_tbs = iwl_tfd_get_num_tbs(tfd);
 439
 440         if (num_tbs >= IWL_NUM_OF_TBS) {
 441                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 442                 /* @todo issue fatal error, it is quite serious situation */
 443                 return;
 444         }
 445
 446         /* Unmap tx_cmd */
 447         if (num_tbs)
 448                 pci_unmap_single(dev,
 449                                 pci_unmap_addr(&txq->meta[index], mapping),
 450                                 pci_unmap_len(&txq->meta[index], len),
 451                                 PCI_DMA_BIDIRECTIONAL);
 452
 453         /* Unmap chunks, if any. */
 454         for (i = 1; i < num_tbs; i++) {
 455                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 456                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 457
 458                 if (txq->txb) {
 459                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 460                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 461                 }
 462         }
 463 }
 464
 465 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 466                                  struct iwl_tx_queue *txq,
 467                                  dma_addr_t addr, u16 len,
 468                                  u8 reset, u8 pad)
 469 {
 470         struct iwl_queue *q;
 471         struct iwl_tfd *tfd, *tfd_tmp;
 472         u32 num_tbs;
 473
 474         q = &txq->q;
 475         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 476         tfd = &tfd_tmp[q->write_ptr];
 477
 478         if (reset)
 479                 memset(tfd, 0, sizeof(*tfd));
 480
 481         num_tbs = iwl_tfd_get_num_tbs(tfd);
 482
 483         /* Each TFD can point to a maximum 20 Tx buffers */
 484         if (num_tbs >= IWL_NUM_OF_TBS) {
 485                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 486                           IWL_NUM_OF_TBS);
 487                 return -EINVAL;
 488         }
 489
 490         BUG_ON(addr & ~DMA_BIT_MASK(36));
 491         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 492                 IWL_ERR(priv, "Unaligned address = %llx\n",
 493                           (unsigned long long)addr);
 494
 495         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 496
 497         return 0;
 498 }
 499
 500 /*
 501  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 502  * given Tx queue, and enable the DMA channel used for that queue.
 503  *
 504  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 505  * channels supported in hardware.
 506  */
 507 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 508                          struct iwl_tx_queue *txq)
 509 {
 510         int txq_id = txq->q.id;
 511
 512         /* Circular buffer (TFD queue in DRAM) physical base address */
 513         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 514                              txq->q.dma_addr >> 8);
 515
 516         return 0;
 517 }
 518
 519 /******************************************************************************
 520  *
 521  * Generic RX handler implementations
 522  *
 523  ******************************************************************************/
 524 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 525                                 struct iwl_rx_mem_buffer *rxb)
 526 {
 527         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 528         struct iwl_alive_resp *palive;
 529         struct delayed_work *pwork;
 530
 531         palive = &pkt->u.alive_frame;
 532
 533         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 534                        "0x%01X 0x%01X\n",
 535                        palive->is_valid, palive->ver_type,
 536                        palive->ver_subtype);
 537
 538         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 539                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 540                 memcpy(&priv->card_alive_init,
 541                        &pkt->u.alive_frame,
 542                        sizeof(struct iwl_init_alive_resp));
 543                 pwork = &priv->init_alive_start;
 544         } else {
 545                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 546                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 547                        sizeof(struct iwl_alive_resp));
 548                 pwork = &priv->alive_start;
 549         }
 550
 551         /* We delay the ALIVE response by 5ms to
 552          * give the HW RF Kill time to activate... */
 553         if (palive->is_valid == UCODE_VALID_OK)
 554                 queue_delayed_work(priv->workqueue, pwork,
 555                                    msecs_to_jiffies(5));
 556         else
 557                 IWL_WARN(priv, "uCode did not respond OK.\n");
 558 }
 559
 560 static void iwl_bg_beacon_update(struct work_struct *work)
 561 {
 562         struct iwl_priv *priv =
 563                 container_of(work, struct iwl_priv, beacon_update);
 564         struct sk_buff *beacon;
 565
 566         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 567         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 568
 569         if (!beacon) {
 570                 IWL_ERR(priv, "update beacon failed\n");
 571                 return;
 572         }
 573
 574         mutex_lock(&priv->mutex);
 575         /* new beacon skb is allocated every time; dispose previous.*/
 576         if (priv->ibss_beacon)
 577                 dev_kfree_skb(priv->ibss_beacon);
 578
 579         priv->ibss_beacon = beacon;
 580         mutex_unlock(&priv->mutex);
 581
 582         iwl_send_beacon_cmd(priv);
 583 }
 584
 585 /**
 586  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 587  *
 588  * This callback is provided in order to send a statistics request.
 589  *
 590  * This timer function is continually reset to execute within
 591  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 592  * was received.  We need to ensure we receive the statistics in order
 593  * to update the temperature used for calibrating the TXPOWER.
 594  */
 595 static void iwl_bg_statistics_periodic(unsigned long data)
 596 {
 597         struct iwl_priv *priv = (struct iwl_priv *)data;
 598
 599         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 600                 return;
 601
 602         /* dont send host command if rf-kill is on */
 603         if (!iwl_is_ready_rf(priv))
 604                 return;
 605
 606         iwl_send_statistics_request(priv, CMD_ASYNC);
 607 }
 608
 609 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 610                                 struct iwl_rx_mem_buffer *rxb)
 611 {
 612 #ifdef CONFIG_IWLWIFI_DEBUG
 613         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 614         struct iwl4965_beacon_notif *beacon =
 615                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 616         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 617
 618         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 619                 "tsf %d %d rate %d\n",
 620                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 621                 beacon->beacon_notify_hdr.failure_frame,
 622                 le32_to_cpu(beacon->ibss_mgr_status),
 623                 le32_to_cpu(beacon->high_tsf),
 624                 le32_to_cpu(beacon->low_tsf), rate);
 625 #endif
 626
 627         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 628             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 629                 queue_work(priv->workqueue, &priv->beacon_update);
 630 }
 631
 632 /* Handle notification from uCode that card's power state is changing
 633  * due to software, hardware, or critical temperature RFKILL */
 634 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 635                                     struct iwl_rx_mem_buffer *rxb)
 636 {
 637         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 638         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 639         unsigned long status = priv->status;
 640
 641         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
 642                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 643                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 644
 645         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 646                      RF_CARD_DISABLED)) {
 647
 648                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 649                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 650
 651                 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 652                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 653
 654                 if (!(flags & RXON_CARD_DISABLED)) {
 655                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 656                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 657                         iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 658                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 659                 }
 660                 if (flags & RF_CARD_DISABLED)
 661                         iwl_tt_enter_ct_kill(priv);
 662         }
 663         if (!(flags & RF_CARD_DISABLED))
 664                 iwl_tt_exit_ct_kill(priv);
 665
 666         if (flags & HW_CARD_DISABLED)
 667                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 668         else
 669                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 670
 671
 672         if (!(flags & RXON_CARD_DISABLED))
 673                 iwl_scan_cancel(priv);
 674
 675         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 676              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 677                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 678                         test_bit(STATUS_RF_KILL_HW, &priv->status));
 679         else
 680                 wake_up_interruptible(&priv->wait_command_queue);
 681 }
 682
 683 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 684 {
 685         if (src == IWL_PWR_SRC_VAUX) {
 686                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
 687                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 688                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 689                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 690         } else {
 691                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 692                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 693                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 694         }
 695
 696         return 0;
 697 }
 698
 699 /**
 700  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 701  *
 702  * Setup the RX handlers for each of the reply types sent from the uCode
 703  * to the host.
 704  *
 705  * This function chains into the hardware specific files for them to setup
 706  * any hardware specific handlers as well.
 707  */
 708 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 709 {
 710         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 711         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 712         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 713         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 714         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 715             iwl_rx_pm_debug_statistics_notif;
 716         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 717
 718         /*
 719          * The same handler is used for both the REPLY to a discrete
 720          * statistics request from the host as well as for the periodic
 721          * statistics notifications (after received beacons) from the uCode.
 722          */
 723         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
 724         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 725
 726         iwl_setup_spectrum_handlers(priv);
 727         iwl_setup_rx_scan_handlers(priv);
 728
 729         /* status change handler */
 730         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 731
 732         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 733             iwl_rx_missed_beacon_notif;
 734         /* Rx handlers */
 735         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
 736         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
 737         /* block ack */
 738         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
 739         /* Set up hardware specific Rx handlers */
 740         priv->cfg->ops->lib->rx_handler_setup(priv);
 741 }
 742
 743 /**
 744  * iwl_rx_handle - Main entry function for receiving responses from uCode
 745  *
 746  * Uses the priv->rx_handlers callback function array to invoke
 747  * the appropriate handlers, including command responses,
 748  * frame-received notifications, and other notifications.
 749  */
 750 void iwl_rx_handle(struct iwl_priv *priv)
 751 {
 752         struct iwl_rx_mem_buffer *rxb;
 753         struct iwl_rx_packet *pkt;
 754         struct iwl_rx_queue *rxq = &priv->rxq;
 755         u32 r, i;
 756         int reclaim;
 757         unsigned long flags;
 758         u8 fill_rx = 0;
 759         u32 count = 8;
 760         int total_empty;
 761
 762         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 763          * buffer that the driver may process (last buffer filled by ucode). */
 764         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 765         i = rxq->read;
 766
 767         /* Rx interrupt, but nothing sent from uCode */
 768         if (i == r)
 769                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
 770
 771         /* calculate total frames need to be restock after handling RX */
 772         total_empty = r - rxq->write_actual;
 773         if (total_empty < 0)
 774                 total_empty += RX_QUEUE_SIZE;
 775
 776         if (total_empty > (RX_QUEUE_SIZE / 2))
 777                 fill_rx = 1;
 778
 779         while (i != r) {
 780                 rxb = rxq->queue[i];
 781
 782                 /* If an RXB doesn't have a Rx queue slot associated with it,
 783                  * then a bug has been introduced in the queue refilling
 784                  * routines -- catch it here */
 785                 BUG_ON(rxb == NULL);
 786
 787                 rxq->queue[i] = NULL;
 788
 789                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
 790                                PAGE_SIZE << priv->hw_params.rx_page_order,
 791                                PCI_DMA_FROMDEVICE);
 792                 pkt = rxb_addr(rxb);
 793
 794                 trace_iwlwifi_dev_rx(priv, pkt,
 795                         le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
 796
 797                 /* Reclaim a command buffer only if this packet is a response
 798                  *   to a (driver-originated) command.
 799                  * If the packet (e.g. Rx frame) originated from uCode,
 800                  *   there is no command buffer to reclaim.
 801                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 802                  *   but apparently a few don't get set; catch them here. */
 803                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
 804                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
 805                         (pkt->hdr.cmd != REPLY_RX) &&
 806                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
 807                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
 808                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
 809                         (pkt->hdr.cmd != REPLY_TX);
 810
 811                 /* Based on type of command response or notification,
 812                  *   handle those that need handling via function in
 813                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
 814                 if (priv->rx_handlers[pkt->hdr.cmd]) {
 815                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
 816                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
 817                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
 818                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
 819                 } else {
 820                         /* No handling needed */
 821                         IWL_DEBUG_RX(priv,
 822                                 "r %d i %d No handler needed for %s, 0x%02x\n",
 823                                 r, i, get_cmd_string(pkt->hdr.cmd),
 824                                 pkt->hdr.cmd);
 825                 }
 826
 827                 /*
 828                  * XXX: After here, we should always check rxb->page
 829                  * against NULL before touching it or its virtual
 830                  * memory (pkt). Because some rx_handler might have
 831                  * already taken or freed the pages.
 832                  */
 833
 834                 if (reclaim) {
 835                         /* Invoke any callbacks, transfer the buffer to caller,
 836                          * and fire off the (possibly) blocking iwl_send_cmd()
 837                          * as we reclaim the driver command queue */
 838                         if (rxb->page)
 839                                 iwl_tx_cmd_complete(priv, rxb);
 840                         else
 841                                 IWL_WARN(priv, "Claim null rxb?\n");
 842                 }
 843
 844                 /* Reuse the page if possible. For notification packets and
 845                  * SKBs that fail to Rx correctly, add them back into the
 846                  * rx_free list for reuse later. */
 847                 spin_lock_irqsave(&rxq->lock, flags);
 848                 if (rxb->page != NULL) {
 849                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
 850                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
 851                                 PCI_DMA_FROMDEVICE);
 852                         list_add_tail(&rxb->list, &rxq->rx_free);
 853                         rxq->free_count++;
 854                 } else
 855                         list_add_tail(&rxb->list, &rxq->rx_used);
 856
 857                 spin_unlock_irqrestore(&rxq->lock, flags);
 858
 859                 i = (i + 1) & RX_QUEUE_MASK;
 860                 /* If there are a lot of unused frames,
 861                  * restock the Rx queue so ucode wont assert. */
 862                 if (fill_rx) {
 863                         count++;
 864                         if (count >= 8) {
 865                                 rxq->read = i;
 866                                 iwl_rx_replenish_now(priv);
 867                                 count = 0;
 868                         }
 869                 }
 870         }
 871
 872         /* Backtrack one entry */
 873         rxq->read = i;
 874         if (fill_rx)
 875                 iwl_rx_replenish_now(priv);
 876         else
 877                 iwl_rx_queue_restock(priv);
 878 }
 879
 880 /* call this function to flush any scheduled tasklet */
 881 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
 882 {
 883         /* wait to make sure we flush pending tasklet*/
 884         synchronize_irq(priv->pci_dev->irq);
 885         tasklet_kill(&priv->irq_tasklet);
 886 }
 887
 888 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
 889 {
 890         u32 inta, handled = 0;
 891         u32 inta_fh;
 892         unsigned long flags;
 893 #ifdef CONFIG_IWLWIFI_DEBUG
 894         u32 inta_mask;
 895 #endif
 896
 897         spin_lock_irqsave(&priv->lock, flags);
 898
 899         /* Ack/clear/reset pending uCode interrupts.
 900          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
 901          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
 902         inta = iwl_read32(priv, CSR_INT);
 903         iwl_write32(priv, CSR_INT, inta);
 904
 905         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
 906          * Any new interrupts that happen after this, either while we're
 907          * in this tasklet, or later, will show up in next ISR/tasklet. */
 908         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
 909         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
 910
 911 #ifdef CONFIG_IWLWIFI_DEBUG
 912         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
 913                 /* just for debug */
 914                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
 915                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
 916                               inta, inta_mask, inta_fh);
 917         }
 918 #endif
 919
 920         spin_unlock_irqrestore(&priv->lock, flags);
 921
 922         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
 923          * atomic, make sure that inta covers all the interrupts that
 924          * we've discovered, even if FH interrupt came in just after
 925          * reading CSR_INT. */
 926         if (inta_fh & CSR49_FH_INT_RX_MASK)
 927                 inta |= CSR_INT_BIT_FH_RX;
 928         if (inta_fh & CSR49_FH_INT_TX_MASK)
 929                 inta |= CSR_INT_BIT_FH_TX;
 930
 931         /* Now service all interrupt bits discovered above. */
 932         if (inta & CSR_INT_BIT_HW_ERR) {
 933                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
 934
 935                 /* Tell the device to stop sending interrupts */
 936                 iwl_disable_interrupts(priv);
 937
 938                 priv->isr_stats.hw++;
 939                 iwl_irq_handle_error(priv);
 940
 941                 handled |= CSR_INT_BIT_HW_ERR;
 942
 943                 return;
 944         }
 945
 946 #ifdef CONFIG_IWLWIFI_DEBUG
 947         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
 948                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
 949                 if (inta & CSR_INT_BIT_SCD) {
 950                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
 951                                       "the frame/frames.\n");
 952                         priv->isr_stats.sch++;
 953                 }
 954
 955                 /* Alive notification via Rx interrupt will do the real work */
 956                 if (inta & CSR_INT_BIT_ALIVE) {
 957                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
 958                         priv->isr_stats.alive++;
 959                 }
 960         }
 961 #endif
 962         /* Safely ignore these bits for debug checks below */
 963         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
 964
 965         /* HW RF KILL switch toggled */
 966         if (inta & CSR_INT_BIT_RF_KILL) {
 967                 int hw_rf_kill = 0;
 968                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
 969                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
 970                         hw_rf_kill = 1;
 971
 972                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
 973                                 hw_rf_kill ? "disable radio" : "enable radio");
 974
 975                 priv->isr_stats.rfkill++;
 976
 977                 /* driver only loads ucode once setting the interface up.
 978                  * the driver allows loading the ucode even if the radio
 979                  * is killed. Hence update the killswitch state here. The
 980                  * rfkill handler will care about restarting if needed.
 981                  */
 982                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
 983                         if (hw_rf_kill)
 984                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 985                         else
 986                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 987                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
 988                 }
 989
 990                 handled |= CSR_INT_BIT_RF_KILL;
 991         }
 992
 993         /* Chip got too hot and stopped itself */
 994         if (inta & CSR_INT_BIT_CT_KILL) {
 995                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
 996                 priv->isr_stats.ctkill++;
 997                 handled |= CSR_INT_BIT_CT_KILL;
 998         }
 999
1000         /* Error detected by uCode */
1001         if (inta & CSR_INT_BIT_SW_ERR) {
1002                 IWL_ERR(priv, "Microcode SW error detected. "
1003                         " Restarting 0x%X.\n", inta);
1004                 priv->isr_stats.sw++;
1005                 priv->isr_stats.sw_err = inta;
1006                 iwl_irq_handle_error(priv);
1007                 handled |= CSR_INT_BIT_SW_ERR;
1008         }
1009
1010         /* uCode wakes up after power-down sleep */
1011         if (inta & CSR_INT_BIT_WAKEUP) {
1012                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1013                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1014                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1015                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1016                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1017                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1018                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1019                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1020
1021                 priv->isr_stats.wakeup++;
1022
1023                 handled |= CSR_INT_BIT_WAKEUP;
1024         }
1025
1026         /* All uCode command responses, including Tx command responses,
1027          * Rx "responses" (frame-received notification), and other
1028          * notifications from uCode come through here*/
1029         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1030                 iwl_rx_handle(priv);
1031                 priv->isr_stats.rx++;
1032                 iwl_leds_background(priv);
1033                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1034         }
1035
1036         if (inta & CSR_INT_BIT_FH_TX) {
1037                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1038                 priv->isr_stats.tx++;
1039                 handled |= CSR_INT_BIT_FH_TX;
1040                 /* FH finished to write, send event */
1041                 priv->ucode_write_complete = 1;
1042                 wake_up_interruptible(&priv->wait_command_queue);
1043         }
1044
1045         if (inta & ~handled) {
1046                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1047                 priv->isr_stats.unhandled++;
1048         }
1049
1050         if (inta & ~(priv->inta_mask)) {
1051                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1052                          inta & ~priv->inta_mask);
1053                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1054         }
1055
1056         /* Re-enable all interrupts */
1057         /* only Re-enable if diabled by irq */
1058         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1059                 iwl_enable_interrupts(priv);
1060
1061 #ifdef CONFIG_IWLWIFI_DEBUG
1062         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1063                 inta = iwl_read32(priv, CSR_INT);
1064                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1065                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1066                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1067                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1068         }
1069 #endif
1070 }
1071
1072 /* tasklet for iwlagn interrupt */
1073 static void iwl_irq_tasklet(struct iwl_priv *priv)
1074 {
1075         u32 inta = 0;
1076         u32 handled = 0;
1077         unsigned long flags;
1078 #ifdef CONFIG_IWLWIFI_DEBUG
1079         u32 inta_mask;
1080 #endif
1081
1082         spin_lock_irqsave(&priv->lock, flags);
1083
1084         /* Ack/clear/reset pending uCode interrupts.
1085          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1086          */
1087         iwl_write32(priv, CSR_INT, priv->inta);
1088
1089         inta = priv->inta;
1090
1091 #ifdef CONFIG_IWLWIFI_DEBUG
1092         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1093                 /* just for debug */
1094                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1095                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1096                                 inta, inta_mask);
1097         }
1098 #endif
1099
1100         spin_unlock_irqrestore(&priv->lock, flags);
1101
1102         /* saved interrupt in inta variable now we can reset priv->inta */
1103         priv->inta = 0;
1104
1105         /* Now service all interrupt bits discovered above. */
1106         if (inta & CSR_INT_BIT_HW_ERR) {
1107                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1108
1109                 /* Tell the device to stop sending interrupts */
1110                 iwl_disable_interrupts(priv);
1111
1112                 priv->isr_stats.hw++;
1113                 iwl_irq_handle_error(priv);
1114
1115                 handled |= CSR_INT_BIT_HW_ERR;
1116
1117                 return;
1118         }
1119
1120 #ifdef CONFIG_IWLWIFI_DEBUG
1121         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1122                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1123                 if (inta & CSR_INT_BIT_SCD) {
1124                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1125                                       "the frame/frames.\n");
1126                         priv->isr_stats.sch++;
1127                 }
1128
1129                 /* Alive notification via Rx interrupt will do the real work */
1130                 if (inta & CSR_INT_BIT_ALIVE) {
1131                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1132                         priv->isr_stats.alive++;
1133                 }
1134         }
1135 #endif
1136         /* Safely ignore these bits for debug checks below */
1137         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1138
1139         /* HW RF KILL switch toggled */
1140         if (inta & CSR_INT_BIT_RF_KILL) {
1141                 int hw_rf_kill = 0;
1142                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1143                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1144                         hw_rf_kill = 1;
1145
1146                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1147                                 hw_rf_kill ? "disable radio" : "enable radio");
1148
1149                 priv->isr_stats.rfkill++;
1150
1151                 /* driver only loads ucode once setting the interface up.
1152                  * the driver allows loading the ucode even if the radio
1153                  * is killed. Hence update the killswitch state here. The
1154                  * rfkill handler will care about restarting if needed.
1155                  */
1156                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1157                         if (hw_rf_kill)
1158                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1159                         else
1160                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1161                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1162                 }
1163
1164                 handled |= CSR_INT_BIT_RF_KILL;
1165         }
1166
1167         /* Chip got too hot and stopped itself */
1168         if (inta & CSR_INT_BIT_CT_KILL) {
1169                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1170                 priv->isr_stats.ctkill++;
1171                 handled |= CSR_INT_BIT_CT_KILL;
1172         }
1173
1174         /* Error detected by uCode */
1175         if (inta & CSR_INT_BIT_SW_ERR) {
1176                 IWL_ERR(priv, "Microcode SW error detected. "
1177                         " Restarting 0x%X.\n", inta);
1178                 priv->isr_stats.sw++;
1179                 priv->isr_stats.sw_err = inta;
1180                 iwl_irq_handle_error(priv);
1181                 handled |= CSR_INT_BIT_SW_ERR;
1182         }
1183
1184         /* uCode wakes up after power-down sleep */
1185         if (inta & CSR_INT_BIT_WAKEUP) {
1186                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1187                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1188                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1189                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1190                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1191                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1192                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1193                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1194
1195                 priv->isr_stats.wakeup++;
1196
1197                 handled |= CSR_INT_BIT_WAKEUP;
1198         }
1199
1200         /* All uCode command responses, including Tx command responses,
1201          * Rx "responses" (frame-received notification), and other
1202          * notifications from uCode come through here*/
1203         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1204                         CSR_INT_BIT_RX_PERIODIC)) {
1205                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1206                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1207                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1208                         iwl_write32(priv, CSR_FH_INT_STATUS,
1209                                         CSR49_FH_INT_RX_MASK);
1210                 }
1211                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1212                         handled |= CSR_INT_BIT_RX_PERIODIC;
1213                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1214                 }
1215                 /* Sending RX interrupt require many steps to be done in the
1216                  * the device:
1217                  * 1- write interrupt to current index in ICT table.
1218                  * 2- dma RX frame.
1219                  * 3- update RX shared data to indicate last write index.
1220                  * 4- send interrupt.
1221                  * This could lead to RX race, driver could receive RX interrupt
1222                  * but the shared data changes does not reflect this.
1223                  * this could lead to RX race, RX periodic will solve this race
1224                  */
1225                 iwl_write32(priv, CSR_INT_PERIODIC_REG,
1226                             CSR_INT_PERIODIC_DIS);
1227                 iwl_rx_handle(priv);
1228                 /* Only set RX periodic if real RX is received. */
1229                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1230                         iwl_write32(priv, CSR_INT_PERIODIC_REG,
1231                                     CSR_INT_PERIODIC_ENA);
1232
1233                 priv->isr_stats.rx++;
1234                 iwl_leds_background(priv);
1235         }
1236
1237         if (inta & CSR_INT_BIT_FH_TX) {
1238                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1239                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1240                 priv->isr_stats.tx++;
1241                 handled |= CSR_INT_BIT_FH_TX;
1242                 /* FH finished to write, send event */
1243                 priv->ucode_write_complete = 1;
1244                 wake_up_interruptible(&priv->wait_command_queue);
1245         }
1246
1247         if (inta & ~handled) {
1248                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1249                 priv->isr_stats.unhandled++;
1250         }
1251
1252         if (inta & ~(priv->inta_mask)) {
1253                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1254                          inta & ~priv->inta_mask);
1255         }
1256
1257         /* Re-enable all interrupts */
1258         /* only Re-enable if diabled by irq */
1259         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1260                 iwl_enable_interrupts(priv);
1261 }
1262
1263
1264 /******************************************************************************
1265  *
1266  * uCode download functions
1267  *
1268  ******************************************************************************/
1269
1270 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1271 {
1272         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1273         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1274         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1275         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1276         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1277         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1278 }
1279
1280 static void iwl_nic_start(struct iwl_priv *priv)
1281 {
1282         /* Remove all resets to allow NIC to operate */
1283         iwl_write32(priv, CSR_RESET, 0);
1284 }
1285
1286
1287 /**
1288  * iwl_read_ucode - Read uCode images from disk file.
1289  *
1290  * Copy into buffers for card to fetch via bus-mastering
1291  */
1292 static int iwl_read_ucode(struct iwl_priv *priv)
1293 {
1294         struct iwl_ucode_header *ucode;
1295         int ret = -EINVAL, index;
1296         const struct firmware *ucode_raw;
1297         const char *name_pre = priv->cfg->fw_name_pre;
1298         const unsigned int api_max = priv->cfg->ucode_api_max;
1299         const unsigned int api_min = priv->cfg->ucode_api_min;
1300         char buf[25];
1301         u8 *src;
1302         size_t len;
1303         u32 api_ver, build;
1304         u32 inst_size, data_size, init_size, init_data_size, boot_size;
1305         u16 eeprom_ver;
1306
1307         /* Ask kernel firmware_class module to get the boot firmware off disk.
1308          * request_firmware() is synchronous, file is in memory on return. */
1309         for (index = api_max; index >= api_min; index--) {
1310                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1311                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1312                 if (ret < 0) {
1313                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
1314                                   buf, ret);
1315                         if (ret == -ENOENT)
1316                                 continue;
1317                         else
1318                                 goto error;
1319                 } else {
1320                         if (index < api_max)
1321                                 IWL_ERR(priv, "Loaded firmware %s, "
1322                                         "which is deprecated. "
1323                                         "Please use API v%u instead.\n",
1324                                           buf, api_max);
1325
1326                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1327                                        buf, ucode_raw->size);
1328                         break;
1329                 }
1330         }
1331
1332         if (ret < 0)
1333                 goto error;
1334
1335         /* Make sure that we got at least the v1 header! */
1336         if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
1337                 IWL_ERR(priv, "File size way too small!\n");
1338                 ret = -EINVAL;
1339                 goto err_release;
1340         }
1341
1342         /* Data from ucode file:  header followed by uCode images */
1343         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1344
1345         priv->ucode_ver = le32_to_cpu(ucode->ver);
1346         api_ver = IWL_UCODE_API(priv->ucode_ver);
1347         build = priv->cfg->ops->ucode->get_build(ucode, api_ver);
1348         inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
1349         data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
1350         init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
1351         init_data_size =
1352                 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
1353         boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
1354         src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
1355
1356         /* api_ver should match the api version forming part of the
1357          * firmware filename ... but we don't check for that and only rely
1358          * on the API version read from firmware header from here on forward */
1359
1360         if (api_ver < api_min || api_ver > api_max) {
1361                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1362                           "Driver supports v%u, firmware is v%u.\n",
1363                           api_max, api_ver);
1364                 priv->ucode_ver = 0;
1365                 ret = -EINVAL;
1366                 goto err_release;
1367         }
1368         if (api_ver != api_max)
1369                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1370                           "got v%u. New firmware can be obtained "
1371                           "from http://www.intellinuxwireless.org.\n",
1372                           api_max, api_ver);
1373
1374         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1375                IWL_UCODE_MAJOR(priv->ucode_ver),
1376                IWL_UCODE_MINOR(priv->ucode_ver),
1377                IWL_UCODE_API(priv->ucode_ver),
1378                IWL_UCODE_SERIAL(priv->ucode_ver));
1379
1380         snprintf(priv->hw->wiphy->fw_version,
1381                  sizeof(priv->hw->wiphy->fw_version),
1382                  "%u.%u.%u.%u",
1383                  IWL_UCODE_MAJOR(priv->ucode_ver),
1384                  IWL_UCODE_MINOR(priv->ucode_ver),
1385                  IWL_UCODE_API(priv->ucode_ver),
1386                  IWL_UCODE_SERIAL(priv->ucode_ver));
1387
1388         if (build)
1389                 IWL_DEBUG_INFO(priv, "Build %u\n", build);
1390
1391         eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
1392         IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
1393                        (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
1394                        ? "OTP" : "EEPROM", eeprom_ver);
1395
1396         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1397                        priv->ucode_ver);
1398         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1399                        inst_size);
1400         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1401                        data_size);
1402         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1403                        init_size);
1404         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1405                        init_data_size);
1406         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1407                        boot_size);
1408
1409         /* Verify size of file vs. image size info in file's header */
1410         if (ucode_raw->size !=
1411                 priv->cfg->ops->ucode->get_header_size(api_ver) +
1412                 inst_size + data_size + init_size +
1413                 init_data_size + boot_size) {
1414
1415                 IWL_DEBUG_INFO(priv,
1416                         "uCode file size %d does not match expected size\n",
1417                         (int)ucode_raw->size);
1418                 ret = -EINVAL;
1419                 goto err_release;
1420         }
1421
1422         /* Verify that uCode images will fit in card's SRAM */
1423         if (inst_size > priv->hw_params.max_inst_size) {
1424                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1425                                inst_size);
1426                 ret = -EINVAL;
1427                 goto err_release;
1428         }
1429
1430         if (data_size > priv->hw_params.max_data_size) {
1431                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1432                                 data_size);
1433                 ret = -EINVAL;
1434                 goto err_release;
1435         }
1436         if (init_size > priv->hw_params.max_inst_size) {
1437                 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1438                         init_size);
1439                 ret = -EINVAL;
1440                 goto err_release;
1441         }
1442         if (init_data_size > priv->hw_params.max_data_size) {
1443                 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1444                       init_data_size);
1445                 ret = -EINVAL;
1446                 goto err_release;
1447         }
1448         if (boot_size > priv->hw_params.max_bsm_size) {
1449                 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1450                         boot_size);
1451                 ret = -EINVAL;
1452                 goto err_release;
1453         }
1454
1455         /* Allocate ucode buffers for card's bus-master loading ... */
1456
1457         /* Runtime instructions and 2 copies of data:
1458          * 1) unmodified from disk
1459          * 2) backup cache for save/restore during power-downs */
1460         priv->ucode_code.len = inst_size;
1461         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1462
1463         priv->ucode_data.len = data_size;
1464         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1465
1466         priv->ucode_data_backup.len = data_size;
1467         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1468
1469         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1470             !priv->ucode_data_backup.v_addr)
1471                 goto err_pci_alloc;
1472
1473         /* Initialization instructions and data */
1474         if (init_size && init_data_size) {
1475                 priv->ucode_init.len = init_size;
1476                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1477
1478                 priv->ucode_init_data.len = init_data_size;
1479                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1480
1481                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1482                         goto err_pci_alloc;
1483         }
1484
1485         /* Bootstrap (instructions only, no data) */
1486         if (boot_size) {
1487                 priv->ucode_boot.len = boot_size;
1488                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1489
1490                 if (!priv->ucode_boot.v_addr)
1491                         goto err_pci_alloc;
1492         }
1493
1494         /* Copy images into buffers for card's bus-master reads ... */
1495
1496         /* Runtime instructions (first block of data in file) */
1497         len = inst_size;
1498         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1499         memcpy(priv->ucode_code.v_addr, src, len);
1500         src += len;
1501
1502         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1503                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1504
1505         /* Runtime data (2nd block)
1506          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1507         len = data_size;
1508         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1509         memcpy(priv->ucode_data.v_addr, src, len);
1510         memcpy(priv->ucode_data_backup.v_addr, src, len);
1511         src += len;
1512
1513         /* Initialization instructions (3rd block) */
1514         if (init_size) {
1515                 len = init_size;
1516                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1517                                 len);
1518                 memcpy(priv->ucode_init.v_addr, src, len);
1519                 src += len;
1520         }
1521
1522         /* Initialization data (4th block) */
1523         if (init_data_size) {
1524                 len = init_data_size;
1525                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1526                                len);
1527                 memcpy(priv->ucode_init_data.v_addr, src, len);
1528                 src += len;
1529         }
1530
1531         /* Bootstrap instructions (5th block) */
1532         len = boot_size;
1533         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1534         memcpy(priv->ucode_boot.v_addr, src, len);
1535
1536         /* We have our copies now, allow OS release its copies */
1537         release_firmware(ucode_raw);
1538         return 0;
1539
1540  err_pci_alloc:
1541         IWL_ERR(priv, "failed to allocate pci memory\n");
1542         ret = -ENOMEM;
1543         iwl_dealloc_ucode_pci(priv);
1544
1545  err_release:
1546         release_firmware(ucode_raw);
1547
1548  error:
1549         return ret;
1550 }
1551
1552 #ifdef CONFIG_IWLWIFI_DEBUG
1553 static const char *desc_lookup_text[] = {
1554         "OK",
1555         "FAIL",
1556         "BAD_PARAM",
1557         "BAD_CHECKSUM",
1558         "NMI_INTERRUPT_WDG",
1559         "SYSASSERT",
1560         "FATAL_ERROR",
1561         "BAD_COMMAND",
1562         "HW_ERROR_TUNE_LOCK",
1563         "HW_ERROR_TEMPERATURE",
1564         "ILLEGAL_CHAN_FREQ",
1565         "VCC_NOT_STABLE",
1566         "FH_ERROR",
1567         "NMI_INTERRUPT_HOST",
1568         "NMI_INTERRUPT_ACTION_PT",
1569         "NMI_INTERRUPT_UNKNOWN",
1570         "UCODE_VERSION_MISMATCH",
1571         "HW_ERROR_ABS_LOCK",
1572         "HW_ERROR_CAL_LOCK_FAIL",
1573         "NMI_INTERRUPT_INST_ACTION_PT",
1574         "NMI_INTERRUPT_DATA_ACTION_PT",
1575         "NMI_TRM_HW_ER",
1576         "NMI_INTERRUPT_TRM",
1577         "NMI_INTERRUPT_BREAK_POINT"
1578         "DEBUG_0",
1579         "DEBUG_1",
1580         "DEBUG_2",
1581         "DEBUG_3",
1582         "UNKNOWN"
1583 };
1584
1585 static const char *desc_lookup(int i)
1586 {
1587         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1588
1589         if (i < 0 || i > max)
1590                 i = max;
1591
1592         return desc_lookup_text[i];
1593 }
1594
1595 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1596 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1597
1598 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1599 {
1600         u32 data2, line;
1601         u32 desc, time, count, base, data1;
1602         u32 blink1, blink2, ilink1, ilink2;
1603
1604         if (priv->ucode_type == UCODE_INIT)
1605                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1606         else
1607                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1608
1609         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1610                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1611                 return;
1612         }
1613
1614         count = iwl_read_targ_mem(priv, base);
1615
1616         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1617                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1618                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1619                         priv->status, count);
1620         }
1621
1622         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1623         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1624         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1625         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1626         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1627         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1628         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1629         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1630         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1631
1632         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1633                                       blink1, blink2, ilink1, ilink2);
1634
1635         IWL_ERR(priv, "Desc                               Time       "
1636                 "data1      data2      line\n");
1637         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1638                 desc_lookup(desc), desc, time, data1, data2, line);
1639         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1640         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1641                 ilink1, ilink2);
1642
1643 }
1644
1645 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1646
1647 /**
1648  * iwl_print_event_log - Dump error event log to syslog
1649  *
1650  */
1651 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1652                                 u32 num_events, u32 mode)
1653 {
1654         u32 i;
1655         u32 base;       /* SRAM byte address of event log header */
1656         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1657         u32 ptr;        /* SRAM byte address of log data */
1658         u32 ev, time, data; /* event log data */
1659
1660         if (num_events == 0)
1661                 return;
1662         if (priv->ucode_type == UCODE_INIT)
1663                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1664         else
1665                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1666
1667         if (mode == 0)
1668                 event_size = 2 * sizeof(u32);
1669         else
1670                 event_size = 3 * sizeof(u32);
1671
1672         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1673
1674         /* "time" is actually "data" for mode 0 (no timestamp).
1675         * place event id # at far right for easier visual parsing. */
1676         for (i = 0; i < num_events; i++) {
1677                 ev = iwl_read_targ_mem(priv, ptr);
1678                 ptr += sizeof(u32);
1679                 time = iwl_read_targ_mem(priv, ptr);
1680                 ptr += sizeof(u32);
1681                 if (mode == 0) {
1682                         /* data, ev */
1683                         trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1684                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1685                 } else {
1686                         data = iwl_read_targ_mem(priv, ptr);
1687                         ptr += sizeof(u32);
1688                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1689                                         time, data, ev);
1690                         trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1691                 }
1692         }
1693 }
1694
1695 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1696 {
1697         u32 base;       /* SRAM byte address of event log header */
1698         u32 capacity;   /* event log capacity in # entries */
1699         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1700         u32 num_wraps;  /* # times uCode wrapped to top of log */
1701         u32 next_entry; /* index of next entry to be written by uCode */
1702         u32 size;       /* # entries that we'll print */
1703
1704         if (priv->ucode_type == UCODE_INIT)
1705                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1706         else
1707                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1708
1709         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1710                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1711                 return;
1712         }
1713
1714         /* event log header */
1715         capacity = iwl_read_targ_mem(priv, base);
1716         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1717         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1718         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1719
1720         size = num_wraps ? capacity : next_entry;
1721
1722         /* bail out if nothing in log */
1723         if (size == 0) {
1724                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1725                 return;
1726         }
1727
1728         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1729                         size, num_wraps);
1730
1731         /* if uCode has wrapped back to top of log, start at the oldest entry,
1732          * i.e the next one that uCode would fill. */
1733         if (num_wraps)
1734                 iwl_print_event_log(priv, next_entry,
1735                                         capacity - next_entry, mode);
1736         /* (then/else) start at top of log */
1737         iwl_print_event_log(priv, 0, next_entry, mode);
1738
1739 }
1740 #endif
1741
1742 /**
1743  * iwl_alive_start - called after REPLY_ALIVE notification received
1744  *                   from protocol/runtime uCode (initialization uCode's
1745  *                   Alive gets handled by iwl_init_alive_start()).
1746  */
1747 static void iwl_alive_start(struct iwl_priv *priv)
1748 {
1749         int ret = 0;
1750
1751         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1752
1753         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1754                 /* We had an error bringing up the hardware, so take it
1755                  * all the way back down so we can try again */
1756                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1757                 goto restart;
1758         }
1759
1760         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1761          * This is a paranoid check, because we would not have gotten the
1762          * "runtime" alive if code weren't properly loaded.  */
1763         if (iwl_verify_ucode(priv)) {
1764                 /* Runtime instruction load was bad;
1765                  * take it all the way back down so we can try again */
1766                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1767                 goto restart;
1768         }
1769
1770         iwl_clear_stations_table(priv);
1771         ret = priv->cfg->ops->lib->alive_notify(priv);
1772         if (ret) {
1773                 IWL_WARN(priv,
1774                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
1775                 goto restart;
1776         }
1777
1778         /* After the ALIVE response, we can send host commands to the uCode */
1779         set_bit(STATUS_ALIVE, &priv->status);
1780
1781         if (iwl_is_rfkill(priv))
1782                 return;
1783
1784         ieee80211_wake_queues(priv->hw);
1785
1786         priv->active_rate = priv->rates_mask;
1787         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1788
1789         /* Configure Tx antenna selection based on H/W config */
1790         if (priv->cfg->ops->hcmd->set_tx_ant)
1791                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
1792
1793         if (iwl_is_associated(priv)) {
1794                 struct iwl_rxon_cmd *active_rxon =
1795                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1796                 /* apply any changes in staging */
1797                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1798                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1799         } else {
1800                 /* Initialize our rx_config data */
1801                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1802
1803                 if (priv->cfg->ops->hcmd->set_rxon_chain)
1804                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
1805
1806                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1807         }
1808
1809         /* Configure Bluetooth device coexistence support */
1810         iwl_send_bt_config(priv);
1811
1812         iwl_reset_run_time_calib(priv);
1813
1814         /* Configure the adapter for unassociated operation */
1815         iwlcore_commit_rxon(priv);
1816
1817         /* At this point, the NIC is initialized and operational */
1818         iwl_rf_kill_ct_config(priv);
1819
1820         iwl_leds_init(priv);
1821
1822         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1823         set_bit(STATUS_READY, &priv->status);
1824         wake_up_interruptible(&priv->wait_command_queue);
1825
1826         iwl_power_update_mode(priv, true);
1827
1828         /* reassociate for ADHOC mode */
1829         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1830                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1831                                                                 priv->vif);
1832                 if (beacon)
1833                         iwl_mac_beacon_update(priv->hw, beacon);
1834         }
1835
1836
1837         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1838                 iwl_set_mode(priv, priv->iw_mode);
1839
1840         return;
1841
1842  restart:
1843         queue_work(priv->workqueue, &priv->restart);
1844 }
1845
1846 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1847
1848 static void __iwl_down(struct iwl_priv *priv)
1849 {
1850         unsigned long flags;
1851         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1852
1853         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1854
1855         if (!exit_pending)
1856                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1857
1858         iwl_clear_stations_table(priv);
1859
1860         /* Unblock any waiting calls */
1861         wake_up_interruptible_all(&priv->wait_command_queue);
1862
1863         /* Wipe out the EXIT_PENDING status bit if we are not actually
1864          * exiting the module */
1865         if (!exit_pending)
1866                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1867
1868         /* stop and reset the on-board processor */
1869         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1870
1871         /* tell the device to stop sending interrupts */
1872         spin_lock_irqsave(&priv->lock, flags);
1873         iwl_disable_interrupts(priv);
1874         spin_unlock_irqrestore(&priv->lock, flags);
1875         iwl_synchronize_irq(priv);
1876
1877         if (priv->mac80211_registered)
1878                 ieee80211_stop_queues(priv->hw);
1879
1880         /* If we have not previously called iwl_init() then
1881          * clear all bits but the RF Kill bit and return */
1882         if (!iwl_is_init(priv)) {
1883                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1884                                         STATUS_RF_KILL_HW |
1885                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1886                                         STATUS_GEO_CONFIGURED |
1887                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1888                                         STATUS_EXIT_PENDING;
1889                 goto exit;
1890         }
1891
1892         /* ...otherwise clear out all the status bits but the RF Kill
1893          * bit and continue taking the NIC down. */
1894         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1895                                 STATUS_RF_KILL_HW |
1896                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1897                                 STATUS_GEO_CONFIGURED |
1898                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1899                                 STATUS_FW_ERROR |
1900                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1901                                 STATUS_EXIT_PENDING;
1902
1903         /* device going down, Stop using ICT table */
1904         iwl_disable_ict(priv);
1905         spin_lock_irqsave(&priv->lock, flags);
1906         iwl_clear_bit(priv, CSR_GP_CNTRL,
1907                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1908         spin_unlock_irqrestore(&priv->lock, flags);
1909
1910         iwl_txq_ctx_stop(priv);
1911         iwl_rxq_stop(priv);
1912
1913         iwl_write_prph(priv, APMG_CLK_DIS_REG,
1914                                 APMG_CLK_VAL_DMA_CLK_RQT);
1915
1916         udelay(5);
1917
1918         /* Stop the device, and put it in low power state */
1919         priv->cfg->ops->lib->apm_ops.stop(priv);
1920
1921  exit:
1922         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1923
1924         if (priv->ibss_beacon)
1925                 dev_kfree_skb(priv->ibss_beacon);
1926         priv->ibss_beacon = NULL;
1927
1928         /* clear out any free frames */
1929         iwl_clear_free_frames(priv);
1930 }
1931
1932 static void iwl_down(struct iwl_priv *priv)
1933 {
1934         mutex_lock(&priv->mutex);
1935         __iwl_down(priv);
1936         mutex_unlock(&priv->mutex);
1937
1938         iwl_cancel_deferred_work(priv);
1939 }
1940
1941 #define HW_READY_TIMEOUT (50)
1942
1943 static int iwl_set_hw_ready(struct iwl_priv *priv)
1944 {
1945         int ret = 0;
1946
1947         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1948                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
1949
1950         /* See if we got it */
1951         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1952                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1953                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1954                                 HW_READY_TIMEOUT);
1955         if (ret != -ETIMEDOUT)
1956                 priv->hw_ready = true;
1957         else
1958                 priv->hw_ready = false;
1959
1960         IWL_DEBUG_INFO(priv, "hardware %s\n",
1961                       (priv->hw_ready == 1) ? "ready" : "not ready");
1962         return ret;
1963 }
1964
1965 static int iwl_prepare_card_hw(struct iwl_priv *priv)
1966 {
1967         int ret = 0;
1968
1969         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n");
1970
1971         ret = iwl_set_hw_ready(priv);
1972         if (priv->hw_ready)
1973                 return ret;
1974
1975         /* If HW is not ready, prepare the conditions to check again */
1976         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1977                         CSR_HW_IF_CONFIG_REG_PREPARE);
1978
1979         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1980                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
1981                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
1982
1983         /* HW should be ready by now, check again. */
1984         if (ret != -ETIMEDOUT)
1985                 iwl_set_hw_ready(priv);
1986
1987         return ret;
1988 }
1989
1990 #define MAX_HW_RESTARTS 5
1991
1992 static int __iwl_up(struct iwl_priv *priv)
1993 {
1994         int i;
1995         int ret;
1996
1997         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1998                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1999                 return -EIO;
2000         }
2001
2002         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2003                 IWL_ERR(priv, "ucode not available for device bringup\n");
2004                 return -EIO;
2005         }
2006
2007         iwl_prepare_card_hw(priv);
2008
2009         if (!priv->hw_ready) {
2010                 IWL_WARN(priv, "Exit HW not ready\n");
2011                 return -EIO;
2012         }
2013
2014         /* If platform's RF_KILL switch is NOT set to KILL */
2015         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2016                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2017         else
2018                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2019
2020         if (iwl_is_rfkill(priv)) {
2021                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2022
2023                 iwl_enable_interrupts(priv);
2024                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2025                 return 0;
2026         }
2027
2028         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2029
2030         ret = iwl_hw_nic_init(priv);
2031         if (ret) {
2032                 IWL_ERR(priv, "Unable to init nic\n");
2033                 return ret;
2034         }
2035
2036         /* make sure rfkill handshake bits are cleared */
2037         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2038         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2039                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2040
2041         /* clear (again), then enable host interrupts */
2042         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2043         iwl_enable_interrupts(priv);
2044
2045         /* really make sure rfkill handshake bits are cleared */
2046         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2047         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2048
2049         /* Copy original ucode data image from disk into backup cache.
2050          * This will be used to initialize the on-board processor's
2051          * data SRAM for a clean start when the runtime program first loads. */
2052         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2053                priv->ucode_data.len);
2054
2055         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2056
2057                 iwl_clear_stations_table(priv);
2058
2059                 /* load bootstrap state machine,
2060                  * load bootstrap program into processor's memory,
2061                  * prepare to load the "initialize" uCode */
2062                 ret = priv->cfg->ops->lib->load_ucode(priv);
2063
2064                 if (ret) {
2065                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2066                                 ret);
2067                         continue;
2068                 }
2069
2070                 /* start card; "initialize" will load runtime ucode */
2071                 iwl_nic_start(priv);
2072
2073                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2074
2075                 return 0;
2076         }
2077
2078         set_bit(STATUS_EXIT_PENDING, &priv->status);
2079         __iwl_down(priv);
2080         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2081
2082         /* tried to restart and config the device for as long as our
2083          * patience could withstand */
2084         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2085         return -EIO;
2086 }
2087
2088
2089 /*****************************************************************************
2090  *
2091  * Workqueue callbacks
2092  *
2093  *****************************************************************************/
2094
2095 static void iwl_bg_init_alive_start(struct work_struct *data)
2096 {
2097         struct iwl_priv *priv =
2098             container_of(data, struct iwl_priv, init_alive_start.work);
2099
2100         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2101                 return;
2102
2103         mutex_lock(&priv->mutex);
2104         priv->cfg->ops->lib->init_alive_start(priv);
2105         mutex_unlock(&priv->mutex);
2106 }
2107
2108 static void iwl_bg_alive_start(struct work_struct *data)
2109 {
2110         struct iwl_priv *priv =
2111             container_of(data, struct iwl_priv, alive_start.work);
2112
2113         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2114                 return;
2115
2116         /* enable dram interrupt */
2117         iwl_reset_ict(priv);
2118
2119         mutex_lock(&priv->mutex);
2120         iwl_alive_start(priv);
2121         mutex_unlock(&priv->mutex);
2122 }
2123
2124 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2125 {
2126         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2127                         run_time_calib_work);
2128
2129         mutex_lock(&priv->mutex);
2130
2131         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2132             test_bit(STATUS_SCANNING, &priv->status)) {
2133                 mutex_unlock(&priv->mutex);
2134                 return;
2135         }
2136
2137         if (priv->start_calib) {
2138                 iwl_chain_noise_calibration(priv, &priv->statistics);
2139
2140                 iwl_sensitivity_calibration(priv, &priv->statistics);
2141         }
2142
2143         mutex_unlock(&priv->mutex);
2144         return;
2145 }
2146
2147 static void iwl_bg_up(struct work_struct *data)
2148 {
2149         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2150
2151         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2152                 return;
2153
2154         mutex_lock(&priv->mutex);
2155         __iwl_up(priv);
2156         mutex_unlock(&priv->mutex);
2157 }
2158
2159 static void iwl_bg_restart(struct work_struct *data)
2160 {
2161         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2162
2163         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2164                 return;
2165
2166         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2167                 mutex_lock(&priv->mutex);
2168                 priv->vif = NULL;
2169                 priv->is_open = 0;
2170                 mutex_unlock(&priv->mutex);
2171                 iwl_down(priv);
2172                 ieee80211_restart_hw(priv->hw);
2173         } else {
2174                 iwl_down(priv);
2175                 queue_work(priv->workqueue, &priv->up);
2176         }
2177 }
2178
2179 static void iwl_bg_rx_replenish(struct work_struct *data)
2180 {
2181         struct iwl_priv *priv =
2182             container_of(data, struct iwl_priv, rx_replenish);
2183
2184         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2185                 return;
2186
2187         mutex_lock(&priv->mutex);
2188         iwl_rx_replenish(priv);
2189         mutex_unlock(&priv->mutex);
2190 }
2191
2192 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2193
2194 void iwl_post_associate(struct iwl_priv *priv)
2195 {
2196         struct ieee80211_conf *conf = NULL;
2197         int ret = 0;
2198         unsigned long flags;
2199
2200         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2201                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2202                 return;
2203         }
2204
2205         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2206                         priv->assoc_id, priv->active_rxon.bssid_addr);
2207
2208
2209         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2210                 return;
2211
2212
2213         if (!priv->vif || !priv->is_open)
2214                 return;
2215
2216         iwl_scan_cancel_timeout(priv, 200);
2217
2218         conf = ieee80211_get_hw_conf(priv->hw);
2219
2220         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2221         iwlcore_commit_rxon(priv);
2222
2223         iwl_setup_rxon_timing(priv);
2224         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2225                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2226         if (ret)
2227                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2228                             "Attempting to continue.\n");
2229
2230         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2231
2232         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2233
2234         if (priv->cfg->ops->hcmd->set_rxon_chain)
2235                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2236
2237         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2238
2239         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2240                         priv->assoc_id, priv->beacon_int);
2241
2242         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2243                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2244         else
2245                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2246
2247         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2248                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2249                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2250                 else
2251                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2252
2253                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2254                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2255
2256         }
2257
2258         iwlcore_commit_rxon(priv);
2259
2260         switch (priv->iw_mode) {
2261         case NL80211_IFTYPE_STATION:
2262                 break;
2263
2264         case NL80211_IFTYPE_ADHOC:
2265
2266                 /* assume default assoc id */
2267                 priv->assoc_id = 1;
2268
2269                 iwl_rxon_add_station(priv, priv->bssid, 0);
2270                 iwl_send_beacon_cmd(priv);
2271
2272                 break;
2273
2274         default:
2275                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2276                           __func__, priv->iw_mode);
2277                 break;
2278         }
2279
2280         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2281                 priv->assoc_station_added = 1;
2282
2283         spin_lock_irqsave(&priv->lock, flags);
2284         iwl_activate_qos(priv, 0);
2285         spin_unlock_irqrestore(&priv->lock, flags);
2286
2287         /* the chain noise calibration will enabled PM upon completion
2288          * If chain noise has already been run, then we need to enable
2289          * power management here */
2290         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2291                 iwl_power_update_mode(priv, false);
2292
2293         /* Enable Rx differential gain and sensitivity calibrations */
2294         iwl_chain_noise_reset(priv);
2295         priv->start_calib = 1;
2296
2297 }
2298
2299 /*****************************************************************************
2300  *
2301  * mac80211 entry point functions
2302  *
2303  *****************************************************************************/
2304
2305 #define UCODE_READY_TIMEOUT     (4 * HZ)
2306
2307 /*
2308  * Not a mac80211 entry point function, but it fits in with all the
2309  * other mac80211 functions grouped here.
2310  */
2311 static int iwl_setup_mac(struct iwl_priv *priv)
2312 {
2313         int ret;
2314         struct ieee80211_hw *hw = priv->hw;
2315         hw->rate_control_algorithm = "iwl-agn-rs";
2316
2317         /* Tell mac80211 our characteristics */
2318         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2319                     IEEE80211_HW_NOISE_DBM |
2320                     IEEE80211_HW_AMPDU_AGGREGATION |
2321                     IEEE80211_HW_SPECTRUM_MGMT;
2322
2323         if (!priv->cfg->broken_powersave)
2324                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2325                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2326
2327         hw->sta_data_size = sizeof(struct iwl_station_priv);
2328         hw->wiphy->interface_modes =
2329                 BIT(NL80211_IFTYPE_STATION) |
2330                 BIT(NL80211_IFTYPE_ADHOC);
2331
2332         hw->wiphy->custom_regulatory = true;
2333
2334         /* Firmware does not support this */
2335         hw->wiphy->disable_beacon_hints = true;
2336
2337         /*
2338          * For now, disable PS by default because it affects
2339          * RX performance significantly.
2340          */
2341         hw->wiphy->ps_default = false;
2342
2343         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2344         /* we create the 802.11 header and a zero-length SSID element */
2345         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
2346
2347         /* Default value; 4 EDCA QOS priorities */
2348         hw->queues = 4;
2349
2350         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2351
2352         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2353                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2354                         &priv->bands[IEEE80211_BAND_2GHZ];
2355         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2356                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2357                         &priv->bands[IEEE80211_BAND_5GHZ];
2358
2359         ret = ieee80211_register_hw(priv->hw);
2360         if (ret) {
2361                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2362                 return ret;
2363         }
2364         priv->mac80211_registered = 1;
2365
2366         return 0;
2367 }
2368
2369
2370 static int iwl_mac_start(struct ieee80211_hw *hw)
2371 {
2372         struct iwl_priv *priv = hw->priv;
2373         int ret;
2374
2375         IWL_DEBUG_MAC80211(priv, "enter\n");
2376
2377         /* we should be verifying the device is ready to be opened */
2378         mutex_lock(&priv->mutex);
2379
2380         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2381          * ucode filename and max sizes are card-specific. */
2382
2383         if (!priv->ucode_code.len) {
2384                 ret = iwl_read_ucode(priv);
2385                 if (ret) {
2386                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2387                         mutex_unlock(&priv->mutex);
2388                         return ret;
2389                 }
2390         }
2391
2392         ret = __iwl_up(priv);
2393
2394         mutex_unlock(&priv->mutex);
2395
2396         if (ret)
2397                 return ret;
2398
2399         if (iwl_is_rfkill(priv))
2400                 goto out;
2401
2402         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2403
2404         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2405          * mac80211 will not be run successfully. */
2406         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2407                         test_bit(STATUS_READY, &priv->status),
2408                         UCODE_READY_TIMEOUT);
2409         if (!ret) {
2410                 if (!test_bit(STATUS_READY, &priv->status)) {
2411                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2412                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2413                         return -ETIMEDOUT;
2414                 }
2415         }
2416
2417         iwl_led_start(priv);
2418
2419 out:
2420         priv->is_open = 1;
2421         IWL_DEBUG_MAC80211(priv, "leave\n");
2422         return 0;
2423 }
2424
2425 static void iwl_mac_stop(struct ieee80211_hw *hw)
2426 {
2427         struct iwl_priv *priv = hw->priv;
2428
2429         IWL_DEBUG_MAC80211(priv, "enter\n");
2430
2431         if (!priv->is_open)
2432                 return;
2433
2434         priv->is_open = 0;
2435
2436         if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
2437                 /* stop mac, cancel any scan request and clear
2438                  * RXON_FILTER_ASSOC_MSK BIT
2439                  */
2440                 mutex_lock(&priv->mutex);
2441                 iwl_scan_cancel_timeout(priv, 100);
2442                 mutex_unlock(&priv->mutex);
2443         }
2444
2445         iwl_down(priv);
2446
2447         flush_workqueue(priv->workqueue);
2448
2449         /* enable interrupts again in order to receive rfkill changes */
2450         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2451         iwl_enable_interrupts(priv);
2452
2453         IWL_DEBUG_MAC80211(priv, "leave\n");
2454 }
2455
2456 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2457 {
2458         struct iwl_priv *priv = hw->priv;
2459
2460         IWL_DEBUG_MACDUMP(priv, "enter\n");
2461
2462         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2463                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2464
2465         if (iwl_tx_skb(priv, skb))
2466                 dev_kfree_skb_any(skb);
2467
2468         IWL_DEBUG_MACDUMP(priv, "leave\n");
2469         return NETDEV_TX_OK;
2470 }
2471
2472 void iwl_config_ap(struct iwl_priv *priv)
2473 {
2474         int ret = 0;
2475         unsigned long flags;
2476
2477         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2478                 return;
2479
2480         /* The following should be done only at AP bring up */
2481         if (!iwl_is_associated(priv)) {
2482
2483                 /* RXON - unassoc (to set timing command) */
2484                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2485                 iwlcore_commit_rxon(priv);
2486
2487                 /* RXON Timing */
2488                 iwl_setup_rxon_timing(priv);
2489                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2490                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2491                 if (ret)
2492                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2493                                         "Attempting to continue.\n");
2494
2495                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2496                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2497
2498                 /* FIXME: what should be the assoc_id for AP? */
2499                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2500                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2501                         priv->staging_rxon.flags |=
2502                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2503                 else
2504                         priv->staging_rxon.flags &=
2505                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2506
2507                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2508                         if (priv->assoc_capability &
2509                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2510                                 priv->staging_rxon.flags |=
2511                                         RXON_FLG_SHORT_SLOT_MSK;
2512                         else
2513                                 priv->staging_rxon.flags &=
2514                                         ~RXON_FLG_SHORT_SLOT_MSK;
2515
2516                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2517                                 priv->staging_rxon.flags &=
2518                                         ~RXON_FLG_SHORT_SLOT_MSK;
2519                 }
2520                 /* restore RXON assoc */
2521                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2522                 iwlcore_commit_rxon(priv);
2523                 spin_lock_irqsave(&priv->lock, flags);
2524                 iwl_activate_qos(priv, 1);
2525                 spin_unlock_irqrestore(&priv->lock, flags);
2526                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2527         }
2528         iwl_send_beacon_cmd(priv);
2529
2530         /* FIXME - we need to add code here to detect a totally new
2531          * configuration, reset the AP, unassoc, rxon timing, assoc,
2532          * clear sta table, add BCAST sta... */
2533 }
2534
2535 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2536                         struct ieee80211_key_conf *keyconf, const u8 *addr,
2537                         u32 iv32, u16 *phase1key)
2538 {
2539
2540         struct iwl_priv *priv = hw->priv;
2541         IWL_DEBUG_MAC80211(priv, "enter\n");
2542
2543         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2544
2545         IWL_DEBUG_MAC80211(priv, "leave\n");
2546 }
2547
2548 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2549                            struct ieee80211_vif *vif,
2550                            struct ieee80211_sta *sta,
2551                            struct ieee80211_key_conf *key)
2552 {
2553         struct iwl_priv *priv = hw->priv;
2554         const u8 *addr;
2555         int ret;
2556         u8 sta_id;
2557         bool is_default_wep_key = false;
2558
2559         IWL_DEBUG_MAC80211(priv, "enter\n");
2560
2561         if (priv->cfg->mod_params->sw_crypto) {
2562                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2563                 return -EOPNOTSUPP;
2564         }
2565         addr = sta ? sta->addr : iwl_bcast_addr;
2566         sta_id = iwl_find_station(priv, addr);
2567         if (sta_id == IWL_INVALID_STATION) {
2568                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2569                                    addr);
2570                 return -EINVAL;
2571
2572         }
2573
2574         mutex_lock(&priv->mutex);
2575         iwl_scan_cancel_timeout(priv, 100);
2576         mutex_unlock(&priv->mutex);
2577
2578         /* If we are getting WEP group key and we didn't receive any key mapping
2579          * so far, we are in legacy wep mode (group key only), otherwise we are
2580          * in 1X mode.
2581          * In legacy wep mode, we use another host command to the uCode */
2582         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2583                 priv->iw_mode != NL80211_IFTYPE_AP) {
2584                 if (cmd == SET_KEY)
2585                         is_default_wep_key = !priv->key_mapping_key;
2586                 else
2587                         is_default_wep_key =
2588                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2589         }
2590
2591         switch (cmd) {
2592         case SET_KEY:
2593                 if (is_default_wep_key)
2594                         ret = iwl_set_default_wep_key(priv, key);
2595                 else
2596                         ret = iwl_set_dynamic_key(priv, key, sta_id);
2597
2598                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2599                 break;
2600         case DISABLE_KEY:
2601                 if (is_default_wep_key)
2602                         ret = iwl_remove_default_wep_key(priv, key);
2603                 else
2604                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
2605
2606                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2607                 break;
2608         default:
2609                 ret = -EINVAL;
2610         }
2611
2612         IWL_DEBUG_MAC80211(priv, "leave\n");
2613
2614         return ret;
2615 }
2616
2617 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2618                              enum ieee80211_ampdu_mlme_action action,
2619                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2620 {
2621         struct iwl_priv *priv = hw->priv;
2622         int ret;
2623
2624         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2625                      sta->addr, tid);
2626
2627         if (!(priv->cfg->sku & IWL_SKU_N))
2628                 return -EACCES;
2629
2630         switch (action) {
2631         case IEEE80211_AMPDU_RX_START:
2632                 IWL_DEBUG_HT(priv, "start Rx\n");
2633                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2634         case IEEE80211_AMPDU_RX_STOP:
2635                 IWL_DEBUG_HT(priv, "stop Rx\n");
2636                 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2637                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2638                         return 0;
2639                 else
2640                         return ret;
2641         case IEEE80211_AMPDU_TX_START:
2642                 IWL_DEBUG_HT(priv, "start Tx\n");
2643                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2644         case IEEE80211_AMPDU_TX_STOP:
2645                 IWL_DEBUG_HT(priv, "stop Tx\n");
2646                 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2647                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2648                         return 0;
2649                 else
2650                         return ret;
2651         default:
2652                 IWL_DEBUG_HT(priv, "unknown\n");
2653                 return -EINVAL;
2654                 break;
2655         }
2656         return 0;
2657 }
2658
2659 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2660                              struct ieee80211_low_level_stats *stats)
2661 {
2662         struct iwl_priv *priv = hw->priv;
2663
2664         priv = hw->priv;
2665         IWL_DEBUG_MAC80211(priv, "enter\n");
2666         IWL_DEBUG_MAC80211(priv, "leave\n");
2667
2668         return 0;
2669 }
2670
2671 /*****************************************************************************
2672  *
2673  * sysfs attributes
2674  *
2675  *****************************************************************************/
2676
2677 #ifdef CONFIG_IWLWIFI_DEBUG
2678
2679 /*
2680  * The following adds a new attribute to the sysfs representation
2681  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2682  * used for controlling the debug level.
2683  *
2684  * See the level definitions in iwl for details.
2685  *
2686  * The debug_level being managed using sysfs below is a per device debug
2687  * level that is used instead of the global debug level if it (the per
2688  * device debug level) is set.
2689  */
2690 static ssize_t show_debug_level(struct device *d,
2691                                 struct device_attribute *attr, char *buf)
2692 {
2693         struct iwl_priv *priv = dev_get_drvdata(d);
2694         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
2695 }
2696 static ssize_t store_debug_level(struct device *d,
2697                                 struct device_attribute *attr,
2698                                  const char *buf, size_t count)
2699 {
2700         struct iwl_priv *priv = dev_get_drvdata(d);
2701         unsigned long val;
2702         int ret;
2703
2704         ret = strict_strtoul(buf, 0, &val);
2705         if (ret)
2706                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2707         else {
2708                 priv->debug_level = val;
2709                 if (iwl_alloc_traffic_mem(priv))
2710                         IWL_ERR(priv,
2711                                 "Not enough memory to generate traffic log\n");
2712         }
2713         return strnlen(buf, count);
2714 }
2715
2716 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2717                         show_debug_level, store_debug_level);
2718
2719
2720 #endif /* CONFIG_IWLWIFI_DEBUG */
2721
2722
2723 static ssize_t show_temperature(struct device *d,
2724                                 struct device_attribute *attr, char *buf)
2725 {
2726         struct iwl_priv *priv = dev_get_drvdata(d);
2727
2728         if (!iwl_is_alive(priv))
2729                 return -EAGAIN;
2730
2731         return sprintf(buf, "%d\n", priv->temperature);
2732 }
2733
2734 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2735
2736 static ssize_t show_tx_power(struct device *d,
2737                              struct device_attribute *attr, char *buf)
2738 {
2739         struct iwl_priv *priv = dev_get_drvdata(d);
2740
2741         if (!iwl_is_ready_rf(priv))
2742                 return sprintf(buf, "off\n");
2743         else
2744                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2745 }
2746
2747 static ssize_t store_tx_power(struct device *d,
2748                               struct device_attribute *attr,
2749                               const char *buf, size_t count)
2750 {
2751         struct iwl_priv *priv = dev_get_drvdata(d);
2752         unsigned long val;
2753         int ret;
2754
2755         ret = strict_strtoul(buf, 10, &val);
2756         if (ret)
2757                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2758         else {
2759                 ret = iwl_set_tx_power(priv, val, false);
2760                 if (ret)
2761                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
2762                                 ret);
2763                 else
2764                         ret = count;
2765         }
2766         return ret;
2767 }
2768
2769 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2770
2771 static ssize_t show_flags(struct device *d,
2772                           struct device_attribute *attr, char *buf)
2773 {
2774         struct iwl_priv *priv = dev_get_drvdata(d);
2775
2776         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2777 }
2778
2779 static ssize_t store_flags(struct device *d,
2780                            struct device_attribute *attr,
2781                            const char *buf, size_t count)
2782 {
2783         struct iwl_priv *priv = dev_get_drvdata(d);
2784         unsigned long val;
2785         u32 flags;
2786         int ret = strict_strtoul(buf, 0, &val);
2787         if (ret)
2788                 return ret;
2789         flags = (u32)val;
2790
2791         mutex_lock(&priv->mutex);
2792         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
2793                 /* Cancel any currently running scans... */
2794                 if (iwl_scan_cancel_timeout(priv, 100))
2795                         IWL_WARN(priv, "Could not cancel scan.\n");
2796                 else {
2797                         IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
2798                         priv->staging_rxon.flags = cpu_to_le32(flags);
2799                         iwlcore_commit_rxon(priv);
2800                 }
2801         }
2802         mutex_unlock(&priv->mutex);
2803
2804         return count;
2805 }
2806
2807 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
2808
2809 static ssize_t show_filter_flags(struct device *d,
2810                                  struct device_attribute *attr, char *buf)
2811 {
2812         struct iwl_priv *priv = dev_get_drvdata(d);
2813
2814         return sprintf(buf, "0x%04X\n",
2815                 le32_to_cpu(priv->active_rxon.filter_flags));
2816 }
2817
2818 static ssize_t store_filter_flags(struct device *d,
2819                                   struct device_attribute *attr,
2820                                   const char *buf, size_t count)
2821 {
2822         struct iwl_priv *priv = dev_get_drvdata(d);
2823         unsigned long val;
2824         u32 filter_flags;
2825         int ret = strict_strtoul(buf, 0, &val);
2826         if (ret)
2827                 return ret;
2828         filter_flags = (u32)val;
2829
2830         mutex_lock(&priv->mutex);
2831         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
2832                 /* Cancel any currently running scans... */
2833                 if (iwl_scan_cancel_timeout(priv, 100))
2834                         IWL_WARN(priv, "Could not cancel scan.\n");
2835                 else {
2836                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
2837                                        "0x%04X\n", filter_flags);
2838                         priv->staging_rxon.filter_flags =
2839                                 cpu_to_le32(filter_flags);
2840                         iwlcore_commit_rxon(priv);
2841                 }
2842         }
2843         mutex_unlock(&priv->mutex);
2844
2845         return count;
2846 }
2847
2848 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
2849                    store_filter_flags);
2850
2851
2852 static ssize_t show_statistics(struct device *d,
2853                                struct device_attribute *attr, char *buf)
2854 {
2855         struct iwl_priv *priv = dev_get_drvdata(d);
2856         u32 size = sizeof(struct iwl_notif_statistics);
2857         u32 len = 0, ofs = 0;
2858         u8 *data = (u8 *)&priv->statistics;
2859         int rc = 0;
2860
2861         if (!iwl_is_alive(priv))
2862                 return -EAGAIN;
2863
2864         mutex_lock(&priv->mutex);
2865         rc = iwl_send_statistics_request(priv, 0);
2866         mutex_unlock(&priv->mutex);
2867
2868         if (rc) {
2869                 len = sprintf(buf,
2870                               "Error sending statistics request: 0x%08X\n", rc);
2871                 return len;
2872         }
2873
2874         while (size && (PAGE_SIZE - len)) {
2875                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
2876                                    PAGE_SIZE - len, 1);
2877                 len = strlen(buf);
2878                 if (PAGE_SIZE - len)
2879                         buf[len++] = '\n';
2880
2881                 ofs += 16;
2882                 size -= min(size, 16U);
2883         }
2884
2885         return len;
2886 }
2887
2888 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
2889
2890 static ssize_t show_rts_ht_protection(struct device *d,
2891                              struct device_attribute *attr, char *buf)
2892 {
2893         struct iwl_priv *priv = dev_get_drvdata(d);
2894
2895         return sprintf(buf, "%s\n",
2896                 priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
2897 }
2898
2899 static ssize_t store_rts_ht_protection(struct device *d,
2900                               struct device_attribute *attr,
2901                               const char *buf, size_t count)
2902 {
2903         struct iwl_priv *priv = dev_get_drvdata(d);
2904         unsigned long val;
2905         int ret;
2906
2907         ret = strict_strtoul(buf, 10, &val);
2908         if (ret)
2909                 IWL_INFO(priv, "Input is not in decimal form.\n");
2910         else {
2911                 if (!iwl_is_associated(priv))
2912                         priv->cfg->use_rts_for_ht = val ? true : false;
2913                 else
2914                         IWL_ERR(priv, "Sta associated with AP - "
2915                                 "Change protection mechanism is not allowed\n");
2916                 ret = count;
2917         }
2918         return ret;
2919 }
2920
2921 static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
2922                         show_rts_ht_protection, store_rts_ht_protection);
2923
2924
2925 /*****************************************************************************
2926  *
2927  * driver setup and teardown
2928  *
2929  *****************************************************************************/
2930
2931 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2932 {
2933         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2934
2935         init_waitqueue_head(&priv->wait_command_queue);
2936
2937         INIT_WORK(&priv->up, iwl_bg_up);
2938         INIT_WORK(&priv->restart, iwl_bg_restart);
2939         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
2940         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2941         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2942         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
2943         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
2944
2945         iwl_setup_scan_deferred_work(priv);
2946
2947         if (priv->cfg->ops->lib->setup_deferred_work)
2948                 priv->cfg->ops->lib->setup_deferred_work(priv);
2949
2950         init_timer(&priv->statistics_periodic);
2951         priv->statistics_periodic.data = (unsigned long)priv;
2952         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2953
2954         if (!priv->cfg->use_isr_legacy)
2955                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2956                         iwl_irq_tasklet, (unsigned long)priv);
2957         else
2958                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2959                         iwl_irq_tasklet_legacy, (unsigned long)priv);
2960 }
2961
2962 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2963 {
2964         if (priv->cfg->ops->lib->cancel_deferred_work)
2965                 priv->cfg->ops->lib->cancel_deferred_work(priv);
2966
2967         cancel_delayed_work_sync(&priv->init_alive_start);
2968         cancel_delayed_work(&priv->scan_check);
2969         cancel_delayed_work(&priv->alive_start);
2970         cancel_work_sync(&priv->beacon_update);
2971         del_timer_sync(&priv->statistics_periodic);
2972 }
2973
2974 static struct attribute *iwl_sysfs_entries[] = {
2975         &dev_attr_flags.attr,
2976         &dev_attr_filter_flags.attr,
2977         &dev_attr_statistics.attr,
2978         &dev_attr_temperature.attr,
2979         &dev_attr_tx_power.attr,
2980         &dev_attr_rts_ht_protection.attr,
2981 #ifdef CONFIG_IWLWIFI_DEBUG
2982         &dev_attr_debug_level.attr,
2983 #endif
2984         NULL
2985 };
2986
2987 static struct attribute_group iwl_attribute_group = {
2988         .name = NULL,           /* put in device directory */
2989         .attrs = iwl_sysfs_entries,
2990 };
2991
2992 static struct ieee80211_ops iwl_hw_ops = {
2993         .tx = iwl_mac_tx,
2994         .start = iwl_mac_start,
2995         .stop = iwl_mac_stop,
2996         .add_interface = iwl_mac_add_interface,
2997         .remove_interface = iwl_mac_remove_interface,
2998         .config = iwl_mac_config,
2999         .configure_filter = iwl_configure_filter,
3000         .set_key = iwl_mac_set_key,
3001         .update_tkip_key = iwl_mac_update_tkip_key,
3002         .get_stats = iwl_mac_get_stats,
3003         .get_tx_stats = iwl_mac_get_tx_stats,
3004         .conf_tx = iwl_mac_conf_tx,
3005         .reset_tsf = iwl_mac_reset_tsf,
3006         .bss_info_changed = iwl_bss_info_changed,
3007         .ampdu_action = iwl_mac_ampdu_action,
3008         .hw_scan = iwl_mac_hw_scan
3009 };
3010
3011 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3012 {
3013         int err = 0;
3014         struct iwl_priv *priv;
3015         struct ieee80211_hw *hw;
3016         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3017         unsigned long flags;
3018         u16 pci_cmd;
3019
3020         /************************
3021          * 1. Allocating HW data
3022          ************************/
3023
3024         /* Disabling hardware scan means that mac80211 will perform scans
3025          * "the hard way", rather than using device's scan. */
3026         if (cfg->mod_params->disable_hw_scan) {
3027                 if (iwl_debug_level & IWL_DL_INFO)
3028                         dev_printk(KERN_DEBUG, &(pdev->dev),
3029                                    "Disabling hw_scan\n");
3030                 iwl_hw_ops.hw_scan = NULL;
3031         }
3032
3033         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3034         if (!hw) {
3035                 err = -ENOMEM;
3036                 goto out;
3037         }
3038         priv = hw->priv;
3039         /* At this point both hw and priv are allocated. */
3040
3041         SET_IEEE80211_DEV(hw, &pdev->dev);
3042
3043         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3044         priv->cfg = cfg;
3045         priv->pci_dev = pdev;
3046         priv->inta_mask = CSR_INI_SET_MASK;
3047
3048 #ifdef CONFIG_IWLWIFI_DEBUG
3049         atomic_set(&priv->restrict_refcnt, 0);
3050 #endif
3051         if (iwl_alloc_traffic_mem(priv))
3052                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3053
3054         /**************************
3055          * 2. Initializing PCI bus
3056          **************************/
3057         if (pci_enable_device(pdev)) {
3058                 err = -ENODEV;
3059                 goto out_ieee80211_free_hw;
3060         }
3061
3062         pci_set_master(pdev);
3063
3064         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3065         if (!err)
3066                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3067         if (err) {
3068                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3069                 if (!err)
3070                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3071                 /* both attempts failed: */
3072                 if (err) {
3073                         IWL_WARN(priv, "No suitable DMA available.\n");
3074                         goto out_pci_disable_device;
3075                 }
3076         }
3077
3078         err = pci_request_regions(pdev, DRV_NAME);
3079         if (err)
3080                 goto out_pci_disable_device;
3081
3082         pci_set_drvdata(pdev, priv);
3083
3084
3085         /***********************
3086          * 3. Read REV register
3087          ***********************/
3088         priv->hw_base = pci_iomap(pdev, 0, 0);
3089         if (!priv->hw_base) {
3090                 err = -ENODEV;
3091                 goto out_pci_release_regions;
3092         }
3093
3094         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3095                 (unsigned long long) pci_resource_len(pdev, 0));
3096         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3097
3098         /* this spin lock will be used in apm_ops.init and EEPROM access
3099          * we should init now
3100          */
3101         spin_lock_init(&priv->reg_lock);
3102         iwl_hw_detect(priv);
3103         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3104                 priv->cfg->name, priv->hw_rev);
3105
3106         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3107          * PCI Tx retries from interfering with C3 CPU state */
3108         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3109
3110         iwl_prepare_card_hw(priv);
3111         if (!priv->hw_ready) {
3112                 IWL_WARN(priv, "Failed, HW not ready\n");
3113                 goto out_iounmap;
3114         }
3115
3116         /* amp init */
3117         err = priv->cfg->ops->lib->apm_ops.init(priv);
3118         if (err < 0) {
3119                 IWL_ERR(priv, "Failed to init APMG\n");
3120                 goto out_iounmap;
3121         }
3122         /*****************
3123          * 4. Read EEPROM
3124          *****************/
3125         /* Read the EEPROM */
3126         err = iwl_eeprom_init(priv);
3127         if (err) {
3128                 IWL_ERR(priv, "Unable to init EEPROM\n");
3129                 goto out_iounmap;
3130         }
3131         err = iwl_eeprom_check_version(priv);
3132         if (err)
3133                 goto out_free_eeprom;
3134
3135         /* extract MAC Address */
3136         iwl_eeprom_get_mac(priv, priv->mac_addr);
3137         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3138         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3139
3140         /************************
3141          * 5. Setup HW constants
3142          ************************/
3143         if (iwl_set_hw_params(priv)) {
3144                 IWL_ERR(priv, "failed to set hw parameters\n");
3145                 goto out_free_eeprom;
3146         }
3147
3148         /*******************
3149          * 6. Setup priv
3150          *******************/
3151
3152         err = iwl_init_drv(priv);
3153         if (err)
3154                 goto out_free_eeprom;
3155         /* At this point both hw and priv are initialized. */
3156
3157         /********************
3158          * 7. Setup services
3159          ********************/
3160         spin_lock_irqsave(&priv->lock, flags);
3161         iwl_disable_interrupts(priv);
3162         spin_unlock_irqrestore(&priv->lock, flags);
3163
3164         pci_enable_msi(priv->pci_dev);
3165
3166         iwl_alloc_isr_ict(priv);
3167         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
3168                           IRQF_SHARED, DRV_NAME, priv);
3169         if (err) {
3170                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3171                 goto out_disable_msi;
3172         }
3173         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3174         if (err) {
3175                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3176                 goto out_free_irq;
3177         }
3178
3179         iwl_setup_deferred_work(priv);
3180         iwl_setup_rx_handlers(priv);
3181
3182         /**********************************
3183          * 8. Setup and register mac80211
3184          **********************************/
3185
3186         /* enable interrupts if needed: hw bug w/a */
3187         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3188         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3189                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3190                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3191         }
3192
3193         iwl_enable_interrupts(priv);
3194
3195         err = iwl_setup_mac(priv);
3196         if (err)
3197                 goto out_remove_sysfs;
3198
3199         err = iwl_dbgfs_register(priv, DRV_NAME);
3200         if (err)
3201                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
3202
3203         /* If platform's RF_KILL switch is NOT set to KILL */
3204         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3205                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3206         else
3207                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3208
3209         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3210                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3211
3212         iwl_power_initialize(priv);
3213         iwl_tt_initialize(priv);
3214         return 0;
3215
3216  out_remove_sysfs:
3217         destroy_workqueue(priv->workqueue);
3218         priv->workqueue = NULL;
3219         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3220  out_free_irq:
3221         free_irq(priv->pci_dev->irq, priv);
3222         iwl_free_isr_ict(priv);
3223  out_disable_msi:
3224         pci_disable_msi(priv->pci_dev);
3225         iwl_uninit_drv(priv);
3226  out_free_eeprom:
3227         iwl_eeprom_free(priv);
3228  out_iounmap:
3229         pci_iounmap(pdev, priv->hw_base);
3230  out_pci_release_regions:
3231         pci_set_drvdata(pdev, NULL);
3232         pci_release_regions(pdev);
3233  out_pci_disable_device:
3234         pci_disable_device(pdev);
3235  out_ieee80211_free_hw:
3236         iwl_free_traffic_mem(priv);
3237         ieee80211_free_hw(priv->hw);
3238  out:
3239         return err;
3240 }
3241
3242 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3243 {
3244         struct iwl_priv *priv = pci_get_drvdata(pdev);
3245         unsigned long flags;
3246
3247         if (!priv)
3248                 return;
3249
3250         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3251
3252         iwl_dbgfs_unregister(priv);
3253         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3254
3255         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3256          * to be called and iwl_down since we are removing the device
3257          * we need to set STATUS_EXIT_PENDING bit.
3258          */
3259         set_bit(STATUS_EXIT_PENDING, &priv->status);
3260         if (priv->mac80211_registered) {
3261                 ieee80211_unregister_hw(priv->hw);
3262                 priv->mac80211_registered = 0;
3263         } else {
3264                 iwl_down(priv);
3265         }
3266
3267         /*
3268          * Make sure device is reset to low power before unloading driver.
3269          * This may be redundant with iwl_down(), but there are paths to
3270          * run iwl_down() without calling apm_ops.stop(), and there are
3271          * paths to avoid running iwl_down() at all before leaving driver.
3272          * This (inexpensive) call *makes sure* device is reset.
3273          */
3274         priv->cfg->ops->lib->apm_ops.stop(priv);
3275
3276         iwl_tt_exit(priv);
3277
3278         /* make sure we flush any pending irq or
3279          * tasklet for the driver
3280          */
3281         spin_lock_irqsave(&priv->lock, flags);
3282         iwl_disable_interrupts(priv);
3283         spin_unlock_irqrestore(&priv->lock, flags);
3284
3285         iwl_synchronize_irq(priv);
3286
3287         iwl_dealloc_ucode_pci(priv);
3288
3289         if (priv->rxq.bd)
3290                 iwl_rx_queue_free(priv, &priv->rxq);
3291         iwl_hw_txq_ctx_free(priv);
3292
3293         iwl_clear_stations_table(priv);
3294         iwl_eeprom_free(priv);
3295
3296
3297         /*netif_stop_queue(dev); */
3298         flush_workqueue(priv->workqueue);
3299
3300         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3301          * priv->workqueue... so we can't take down the workqueue
3302          * until now... */
3303         destroy_workqueue(priv->workqueue);
3304         priv->workqueue = NULL;
3305         iwl_free_traffic_mem(priv);
3306
3307         free_irq(priv->pci_dev->irq, priv);
3308         pci_disable_msi(priv->pci_dev);
3309         pci_iounmap(pdev, priv->hw_base);
3310         pci_release_regions(pdev);
3311         pci_disable_device(pdev);
3312         pci_set_drvdata(pdev, NULL);
3313
3314         iwl_uninit_drv(priv);
3315
3316         iwl_free_isr_ict(priv);
3317
3318         if (priv->ibss_beacon)
3319                 dev_kfree_skb(priv->ibss_beacon);
3320
3321         ieee80211_free_hw(priv->hw);
3322 }
3323
3324
3325 /*****************************************************************************
3326  *
3327  * driver and module entry point
3328  *
3329  *****************************************************************************/
3330
3331 /* Hardware specific file defines the PCI IDs table for that hardware module */
3332 static struct pci_device_id iwl_hw_card_ids[] = {
3333 #ifdef CONFIG_IWL4965
3334         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3335         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3336 #endif /* CONFIG_IWL4965 */
3337 #ifdef CONFIG_IWL5000
3338         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
3339         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
3340         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
3341         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
3342         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
3343         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
3344         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
3345         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
3346         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
3347         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
3348 /* 5350 WiFi/WiMax */
3349         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
3350         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
3351         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
3352 /* 5150 Wifi/WiMax */
3353         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
3354         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
3355
3356 /* 6x00 Series */
3357         {IWL_PCI_DEVICE(0x008D, 0x1301, iwl6000h_2agn_cfg)},
3358         {IWL_PCI_DEVICE(0x008D, 0x1321, iwl6000h_2agn_cfg)},
3359         {IWL_PCI_DEVICE(0x008D, 0x1326, iwl6000h_2abg_cfg)},
3360         {IWL_PCI_DEVICE(0x008D, 0x1306, iwl6000h_2abg_cfg)},
3361         {IWL_PCI_DEVICE(0x008D, 0x1307, iwl6000h_2bg_cfg)},
3362         {IWL_PCI_DEVICE(0x008E, 0x1311, iwl6000h_2agn_cfg)},
3363         {IWL_PCI_DEVICE(0x008E, 0x1316, iwl6000h_2abg_cfg)},
3364
3365         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3366         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3367         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3368         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3369         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3370         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3371         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3372         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3373         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3374         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3375
3376 /* 6x50 WiFi/WiMax Series */
3377         {IWL_PCI_DEVICE(0x0086, 0x1101, iwl6050_3agn_cfg)},
3378         {IWL_PCI_DEVICE(0x0086, 0x1121, iwl6050_3agn_cfg)},
3379         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3380         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3381         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3382         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3383         {IWL_PCI_DEVICE(0x0088, 0x1111, iwl6050_3agn_cfg)},
3384         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3385         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3386
3387 /* 1000 Series WiFi */
3388         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3389         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3390         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3391         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3392         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3393         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3394         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
3395         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
3396         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
3397         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
3398         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
3399         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
3400 #endif /* CONFIG_IWL5000 */
3401
3402         {0}
3403 };
3404 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3405
3406 static struct pci_driver iwl_driver = {
3407         .name = DRV_NAME,
3408         .id_table = iwl_hw_card_ids,
3409         .probe = iwl_pci_probe,
3410         .remove = __devexit_p(iwl_pci_remove),
3411 #ifdef CONFIG_PM
3412         .suspend = iwl_pci_suspend,
3413         .resume = iwl_pci_resume,
3414 #endif
3415 };
3416
3417 static int __init iwl_init(void)
3418 {
3419
3420         int ret;
3421         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3422         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3423
3424         ret = iwlagn_rate_control_register();
3425         if (ret) {
3426                 printk(KERN_ERR DRV_NAME
3427                        "Unable to register rate control algorithm: %d\n", ret);
3428                 return ret;
3429         }
3430
3431         ret = pci_register_driver(&iwl_driver);
3432         if (ret) {
3433                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3434                 goto error_register;
3435         }
3436
3437         return ret;
3438
3439 error_register:
3440         iwlagn_rate_control_unregister();
3441         return ret;
3442 }
3443
3444 static void __exit iwl_exit(void)
3445 {
3446         pci_unregister_driver(&iwl_driver);
3447         iwlagn_rate_control_unregister();
3448 }
3449
3450 module_exit(iwl_exit);
3451 module_init(iwl_init);
3452
3453 #ifdef CONFIG_IWLWIFI_DEBUG
3454 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
3455 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
3456 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3457 MODULE_PARM_DESC(debug, "debug output mask");
3458 #endif
3459