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                 iwl_print_rx_config_cmd(priv);
 137                 return 0;
 138         }
 139
 140         /* station table will be cleared */
 141         priv->assoc_station_added = 0;
 142
 143         /* If we are currently associated and the new config requires
 144          * an RXON_ASSOC and the new config wants the associated mask enabled,
 145          * we must clear the associated from the active configuration
 146          * before we apply the new config */
 147         if (iwl_is_associated(priv) && new_assoc) {
 148                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 149                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 150
 151                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 152                                       sizeof(struct iwl_rxon_cmd),
 153                                       &priv->active_rxon);
 154
 155                 /* If the mask clearing failed then we set
 156                  * active_rxon back to what it was previously */
 157                 if (ret) {
 158                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 159                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 160                         return ret;
 161                 }
 162         }
 163
 164         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 165                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 166                        "* channel = %d\n"
 167                        "* bssid = %pM\n",
 168                        (new_assoc ? "" : "out"),
 169                        le16_to_cpu(priv->staging_rxon.channel),
 170                        priv->staging_rxon.bssid_addr);
 171
 172         iwl_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
 173
 174         /* Apply the new configuration
 175          * RXON unassoc clears the station table in uCode, send it before
 176          * we add the bcast station. If assoc bit is set, we will send RXON
 177          * after having added the bcast and bssid station.
 178          */
 179         if (!new_assoc) {
 180                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 181                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 182                 if (ret) {
 183                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 184                         return ret;
 185                 }
 186                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 187         }
 188
 189         iwl_clear_stations_table(priv);
 190
 191         priv->start_calib = 0;
 192
 193         /* Add the broadcast address so we can send broadcast frames */
 194         iwl_add_bcast_station(priv);
 195
 196         /* If we have set the ASSOC_MSK and we are in BSS mode then
 197          * add the IWL_AP_ID to the station rate table */
 198         if (new_assoc) {
 199                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 200                         ret = iwl_rxon_add_station(priv,
 201                                            priv->active_rxon.bssid_addr, 1);
 202                         if (ret == IWL_INVALID_STATION) {
 203                                 IWL_ERR(priv,
 204                                         "Error adding AP address for TX.\n");
 205                                 return -EIO;
 206                         }
 207                         priv->assoc_station_added = 1;
 208                         if (priv->default_wep_key &&
 209                             iwl_send_static_wepkey_cmd(priv, 0))
 210                                 IWL_ERR(priv,
 211                                         "Could not send WEP static key.\n");
 212                 }
 213
 214                 /*
 215                  * allow CTS-to-self if possible for new association.
 216                  * this is relevant only for 5000 series and up,
 217                  * but will not damage 4965
 218                  */
 219                 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 220
 221                 /* Apply the new configuration
 222                  * RXON assoc doesn't clear the station table in uCode,
 223                  */
 224                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 225                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 226                 if (ret) {
 227                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 228                         return ret;
 229                 }
 230                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 231         }
 232         iwl_print_rx_config_cmd(priv);
 233
 234         iwl_init_sensitivity(priv);
 235
 236         /* If we issue a new RXON command which required a tune then we must
 237          * send a new TXPOWER command or we won't be able to Tx any frames */
 238         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 239         if (ret) {
 240                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 241                 return ret;
 242         }
 243
 244         return 0;
 245 }
 246
 247 void iwl_update_chain_flags(struct iwl_priv *priv)
 248 {
 249
 250         if (priv->cfg->ops->hcmd->set_rxon_chain)
 251                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 252         iwlcore_commit_rxon(priv);
 253 }
 254
 255 static void iwl_clear_free_frames(struct iwl_priv *priv)
 256 {
 257         struct list_head *element;
 258
 259         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 260                        priv->frames_count);
 261
 262         while (!list_empty(&priv->free_frames)) {
 263                 element = priv->free_frames.next;
 264                 list_del(element);
 265                 kfree(list_entry(element, struct iwl_frame, list));
 266                 priv->frames_count--;
 267         }
 268
 269         if (priv->frames_count) {
 270                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 271                             priv->frames_count);
 272                 priv->frames_count = 0;
 273         }
 274 }
 275
 276 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 277 {
 278         struct iwl_frame *frame;
 279         struct list_head *element;
 280         if (list_empty(&priv->free_frames)) {
 281                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 282                 if (!frame) {
 283                         IWL_ERR(priv, "Could not allocate frame!\n");
 284                         return NULL;
 285                 }
 286
 287                 priv->frames_count++;
 288                 return frame;
 289         }
 290
 291         element = priv->free_frames.next;
 292         list_del(element);
 293         return list_entry(element, struct iwl_frame, list);
 294 }
 295
 296 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 297 {
 298         memset(frame, 0, sizeof(*frame));
 299         list_add(&frame->list, &priv->free_frames);
 300 }
 301
 302 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 303                                           struct ieee80211_hdr *hdr,
 304                                           int left)
 305 {
 306         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 307             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 308              (priv->iw_mode != NL80211_IFTYPE_AP)))
 309                 return 0;
 310
 311         if (priv->ibss_beacon->len > left)
 312                 return 0;
 313
 314         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 315
 316         return priv->ibss_beacon->len;
 317 }
 318
 319 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 320                                        struct iwl_frame *frame, u8 rate)
 321 {
 322         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 323         unsigned int frame_size;
 324
 325         tx_beacon_cmd = &frame->u.beacon;
 326         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 327
 328         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 329         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 330
 331         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 332                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 333
 334         BUG_ON(frame_size > MAX_MPDU_SIZE);
 335         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 336
 337         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 338                 tx_beacon_cmd->tx.rate_n_flags =
 339                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 340         else
 341                 tx_beacon_cmd->tx.rate_n_flags =
 342                         iwl_hw_set_rate_n_flags(rate, 0);
 343
 344         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 345                                      TX_CMD_FLG_TSF_MSK |
 346                                      TX_CMD_FLG_STA_RATE_MSK;
 347
 348         return sizeof(*tx_beacon_cmd) + frame_size;
 349 }
 350 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 351 {
 352         struct iwl_frame *frame;
 353         unsigned int frame_size;
 354         int rc;
 355         u8 rate;
 356
 357         frame = iwl_get_free_frame(priv);
 358
 359         if (!frame) {
 360                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 361                           "command.\n");
 362                 return -ENOMEM;
 363         }
 364
 365         rate = iwl_rate_get_lowest_plcp(priv);
 366
 367         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 368
 369         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 370                               &frame->u.cmd[0]);
 371
 372         iwl_free_frame(priv, frame);
 373
 374         return rc;
 375 }
 376
 377 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 378 {
 379         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 380
 381         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 382         if (sizeof(dma_addr_t) > sizeof(u32))
 383                 addr |=
 384                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 385
 386         return addr;
 387 }
 388
 389 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 390 {
 391         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 392
 393         return le16_to_cpu(tb->hi_n_len) >> 4;
 394 }
 395
 396 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 397                                   dma_addr_t addr, u16 len)
 398 {
 399         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 400         u16 hi_n_len = len << 4;
 401
 402         put_unaligned_le32(addr, &tb->lo);
 403         if (sizeof(dma_addr_t) > sizeof(u32))
 404                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 405
 406         tb->hi_n_len = cpu_to_le16(hi_n_len);
 407
 408         tfd->num_tbs = idx + 1;
 409 }
 410
 411 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 412 {
 413         return tfd->num_tbs & 0x1f;
 414 }
 415
 416 /**
 417  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 418  * @priv - driver private data
 419  * @txq - tx queue
 420  *
 421  * Does NOT advance any TFD circular buffer read/write indexes
 422  * Does NOT free the TFD itself (which is within circular buffer)
 423  */
 424 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 425 {
 426         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 427         struct iwl_tfd *tfd;
 428         struct pci_dev *dev = priv->pci_dev;
 429         int index = txq->q.read_ptr;
 430         int i;
 431         int num_tbs;
 432
 433         tfd = &tfd_tmp[index];
 434
 435         /* Sanity check on number of chunks */
 436         num_tbs = iwl_tfd_get_num_tbs(tfd);
 437
 438         if (num_tbs >= IWL_NUM_OF_TBS) {
 439                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 440                 /* @todo issue fatal error, it is quite serious situation */
 441                 return;
 442         }
 443
 444         /* Unmap tx_cmd */
 445         if (num_tbs)
 446                 pci_unmap_single(dev,
 447                                 pci_unmap_addr(&txq->meta[index], mapping),
 448                                 pci_unmap_len(&txq->meta[index], len),
 449                                 PCI_DMA_BIDIRECTIONAL);
 450
 451         /* Unmap chunks, if any. */
 452         for (i = 1; i < num_tbs; i++) {
 453                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 454                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 455
 456                 if (txq->txb) {
 457                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 458                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 459                 }
 460         }
 461 }
 462
 463 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 464                                  struct iwl_tx_queue *txq,
 465                                  dma_addr_t addr, u16 len,
 466                                  u8 reset, u8 pad)
 467 {
 468         struct iwl_queue *q;
 469         struct iwl_tfd *tfd, *tfd_tmp;
 470         u32 num_tbs;
 471
 472         q = &txq->q;
 473         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 474         tfd = &tfd_tmp[q->write_ptr];
 475
 476         if (reset)
 477                 memset(tfd, 0, sizeof(*tfd));
 478
 479         num_tbs = iwl_tfd_get_num_tbs(tfd);
 480
 481         /* Each TFD can point to a maximum 20 Tx buffers */
 482         if (num_tbs >= IWL_NUM_OF_TBS) {
 483                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 484                           IWL_NUM_OF_TBS);
 485                 return -EINVAL;
 486         }
 487
 488         BUG_ON(addr & ~DMA_BIT_MASK(36));
 489         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 490                 IWL_ERR(priv, "Unaligned address = %llx\n",
 491                           (unsigned long long)addr);
 492
 493         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 494
 495         return 0;
 496 }
 497
 498 /*
 499  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 500  * given Tx queue, and enable the DMA channel used for that queue.
 501  *
 502  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 503  * channels supported in hardware.
 504  */
 505 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 506                          struct iwl_tx_queue *txq)
 507 {
 508         int txq_id = txq->q.id;
 509
 510         /* Circular buffer (TFD queue in DRAM) physical base address */
 511         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 512                              txq->q.dma_addr >> 8);
 513
 514         return 0;
 515 }
 516
 517 /******************************************************************************
 518  *
 519  * Generic RX handler implementations
 520  *
 521  ******************************************************************************/
 522 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 523                                 struct iwl_rx_mem_buffer *rxb)
 524 {
 525         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 526         struct iwl_alive_resp *palive;
 527         struct delayed_work *pwork;
 528
 529         palive = &pkt->u.alive_frame;
 530
 531         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 532                        "0x%01X 0x%01X\n",
 533                        palive->is_valid, palive->ver_type,
 534                        palive->ver_subtype);
 535
 536         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 537                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 538                 memcpy(&priv->card_alive_init,
 539                        &pkt->u.alive_frame,
 540                        sizeof(struct iwl_init_alive_resp));
 541                 pwork = &priv->init_alive_start;
 542         } else {
 543                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 544                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 545                        sizeof(struct iwl_alive_resp));
 546                 pwork = &priv->alive_start;
 547         }
 548
 549         /* We delay the ALIVE response by 5ms to
 550          * give the HW RF Kill time to activate... */
 551         if (palive->is_valid == UCODE_VALID_OK)
 552                 queue_delayed_work(priv->workqueue, pwork,
 553                                    msecs_to_jiffies(5));
 554         else
 555                 IWL_WARN(priv, "uCode did not respond OK.\n");
 556 }
 557
 558 static void iwl_bg_beacon_update(struct work_struct *work)
 559 {
 560         struct iwl_priv *priv =
 561                 container_of(work, struct iwl_priv, beacon_update);
 562         struct sk_buff *beacon;
 563
 564         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 565         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 566
 567         if (!beacon) {
 568                 IWL_ERR(priv, "update beacon failed\n");
 569                 return;
 570         }
 571
 572         mutex_lock(&priv->mutex);
 573         /* new beacon skb is allocated every time; dispose previous.*/
 574         if (priv->ibss_beacon)
 575                 dev_kfree_skb(priv->ibss_beacon);
 576
 577         priv->ibss_beacon = beacon;
 578         mutex_unlock(&priv->mutex);
 579
 580         iwl_send_beacon_cmd(priv);
 581 }
 582
 583 /**
 584  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 585  *
 586  * This callback is provided in order to send a statistics request.
 587  *
 588  * This timer function is continually reset to execute within
 589  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 590  * was received.  We need to ensure we receive the statistics in order
 591  * to update the temperature used for calibrating the TXPOWER.
 592  */
 593 static void iwl_bg_statistics_periodic(unsigned long data)
 594 {
 595         struct iwl_priv *priv = (struct iwl_priv *)data;
 596
 597         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 598                 return;
 599
 600         /* dont send host command if rf-kill is on */
 601         if (!iwl_is_ready_rf(priv))
 602                 return;
 603
 604         iwl_send_statistics_request(priv, CMD_ASYNC);
 605 }
 606
 607 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 608                                 struct iwl_rx_mem_buffer *rxb)
 609 {
 610 #ifdef CONFIG_IWLWIFI_DEBUG
 611         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 612         struct iwl4965_beacon_notif *beacon =
 613                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 614         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 615
 616         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 617                 "tsf %d %d rate %d\n",
 618                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 619                 beacon->beacon_notify_hdr.failure_frame,
 620                 le32_to_cpu(beacon->ibss_mgr_status),
 621                 le32_to_cpu(beacon->high_tsf),
 622                 le32_to_cpu(beacon->low_tsf), rate);
 623 #endif
 624
 625         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 626             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 627                 queue_work(priv->workqueue, &priv->beacon_update);
 628 }
 629
 630 /* Handle notification from uCode that card's power state is changing
 631  * due to software, hardware, or critical temperature RFKILL */
 632 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 633                                     struct iwl_rx_mem_buffer *rxb)
 634 {
 635         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 636         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 637         unsigned long status = priv->status;
 638
 639         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
 640                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 641                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 642
 643         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 644                      RF_CARD_DISABLED)) {
 645
 646                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 647                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 648
 649                 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 650                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 651
 652                 if (!(flags & RXON_CARD_DISABLED)) {
 653                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 654                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 655                         iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 656                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 657                 }
 658                 if (flags & RF_CARD_DISABLED)
 659                         iwl_tt_enter_ct_kill(priv);
 660         }
 661         if (!(flags & RF_CARD_DISABLED))
 662                 iwl_tt_exit_ct_kill(priv);
 663
 664         if (flags & HW_CARD_DISABLED)
 665                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 666         else
 667                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 668
 669
 670         if (!(flags & RXON_CARD_DISABLED))
 671                 iwl_scan_cancel(priv);
 672
 673         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 674              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 675                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 676                         test_bit(STATUS_RF_KILL_HW, &priv->status));
 677         else
 678                 wake_up_interruptible(&priv->wait_command_queue);
 679 }
 680
 681 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 682 {
 683         if (src == IWL_PWR_SRC_VAUX) {
 684                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
 685                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 686                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 687                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 688         } else {
 689                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 690                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 691                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 692         }
 693
 694         return 0;
 695 }
 696
 697 /**
 698  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 699  *
 700  * Setup the RX handlers for each of the reply types sent from the uCode
 701  * to the host.
 702  *
 703  * This function chains into the hardware specific files for them to setup
 704  * any hardware specific handlers as well.
 705  */
 706 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 707 {
 708         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 709         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 710         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 711         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 712         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 713             iwl_rx_pm_debug_statistics_notif;
 714         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 715
 716         /*
 717          * The same handler is used for both the REPLY to a discrete
 718          * statistics request from the host as well as for the periodic
 719          * statistics notifications (after received beacons) from the uCode.
 720          */
 721         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
 722         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 723
 724         iwl_setup_spectrum_handlers(priv);
 725         iwl_setup_rx_scan_handlers(priv);
 726
 727         /* status change handler */
 728         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 729
 730         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 731             iwl_rx_missed_beacon_notif;
 732         /* Rx handlers */
 733         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
 734         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
 735         /* block ack */
 736         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
 737         /* Set up hardware specific Rx handlers */
 738         priv->cfg->ops->lib->rx_handler_setup(priv);
 739 }
 740
 741 /**
 742  * iwl_rx_handle - Main entry function for receiving responses from uCode
 743  *
 744  * Uses the priv->rx_handlers callback function array to invoke
 745  * the appropriate handlers, including command responses,
 746  * frame-received notifications, and other notifications.
 747  */
 748 void iwl_rx_handle(struct iwl_priv *priv)
 749 {
 750         struct iwl_rx_mem_buffer *rxb;
 751         struct iwl_rx_packet *pkt;
 752         struct iwl_rx_queue *rxq = &priv->rxq;
 753         u32 r, i;
 754         int reclaim;
 755         unsigned long flags;
 756         u8 fill_rx = 0;
 757         u32 count = 8;
 758         int total_empty;
 759
 760         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 761          * buffer that the driver may process (last buffer filled by ucode). */
 762         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 763         i = rxq->read;
 764
 765         /* Rx interrupt, but nothing sent from uCode */
 766         if (i == r)
 767                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
 768
 769         /* calculate total frames need to be restock after handling RX */
 770         total_empty = r - rxq->write_actual;
 771         if (total_empty < 0)
 772                 total_empty += RX_QUEUE_SIZE;
 773
 774         if (total_empty > (RX_QUEUE_SIZE / 2))
 775                 fill_rx = 1;
 776
 777         while (i != r) {
 778                 rxb = rxq->queue[i];
 779
 780                 /* If an RXB doesn't have a Rx queue slot associated with it,
 781                  * then a bug has been introduced in the queue refilling
 782                  * routines -- catch it here */
 783                 BUG_ON(rxb == NULL);
 784
 785                 rxq->queue[i] = NULL;
 786
 787                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
 788                                PAGE_SIZE << priv->hw_params.rx_page_order,
 789                                PCI_DMA_FROMDEVICE);
 790                 pkt = rxb_addr(rxb);
 791
 792                 trace_iwlwifi_dev_rx(priv, pkt,
 793                         le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
 794
 795                 /* Reclaim a command buffer only if this packet is a response
 796                  *   to a (driver-originated) command.
 797                  * If the packet (e.g. Rx frame) originated from uCode,
 798                  *   there is no command buffer to reclaim.
 799                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 800                  *   but apparently a few don't get set; catch them here. */
 801                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
 802                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
 803                         (pkt->hdr.cmd != REPLY_RX) &&
 804                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
 805                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
 806                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
 807                         (pkt->hdr.cmd != REPLY_TX);
 808
 809                 /* Based on type of command response or notification,
 810                  *   handle those that need handling via function in
 811                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
 812                 if (priv->rx_handlers[pkt->hdr.cmd]) {
 813                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
 814                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
 815                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
 816                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
 817                 } else {
 818                         /* No handling needed */
 819                         IWL_DEBUG_RX(priv,
 820                                 "r %d i %d No handler needed for %s, 0x%02x\n",
 821                                 r, i, get_cmd_string(pkt->hdr.cmd),
 822                                 pkt->hdr.cmd);
 823                 }
 824
 825                 /*
 826                  * XXX: After here, we should always check rxb->page
 827                  * against NULL before touching it or its virtual
 828                  * memory (pkt). Because some rx_handler might have
 829                  * already taken or freed the pages.
 830                  */
 831
 832                 if (reclaim) {
 833                         /* Invoke any callbacks, transfer the buffer to caller,
 834                          * and fire off the (possibly) blocking iwl_send_cmd()
 835                          * as we reclaim the driver command queue */
 836                         if (rxb->page)
 837                                 iwl_tx_cmd_complete(priv, rxb);
 838                         else
 839                                 IWL_WARN(priv, "Claim null rxb?\n");
 840                 }
 841
 842                 /* Reuse the page if possible. For notification packets and
 843                  * SKBs that fail to Rx correctly, add them back into the
 844                  * rx_free list for reuse later. */
 845                 spin_lock_irqsave(&rxq->lock, flags);
 846                 if (rxb->page != NULL) {
 847                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
 848                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
 849                                 PCI_DMA_FROMDEVICE);
 850                         list_add_tail(&rxb->list, &rxq->rx_free);
 851                         rxq->free_count++;
 852                 } else
 853                         list_add_tail(&rxb->list, &rxq->rx_used);
 854
 855                 spin_unlock_irqrestore(&rxq->lock, flags);
 856
 857                 i = (i + 1) & RX_QUEUE_MASK;
 858                 /* If there are a lot of unused frames,
 859                  * restock the Rx queue so ucode wont assert. */
 860                 if (fill_rx) {
 861                         count++;
 862                         if (count >= 8) {
 863                                 rxq->read = i;
 864                                 iwl_rx_replenish_now(priv);
 865                                 count = 0;
 866                         }
 867                 }
 868         }
 869
 870         /* Backtrack one entry */
 871         rxq->read = i;
 872         if (fill_rx)
 873                 iwl_rx_replenish_now(priv);
 874         else
 875                 iwl_rx_queue_restock(priv);
 876 }
 877
 878 /* call this function to flush any scheduled tasklet */
 879 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
 880 {
 881         /* wait to make sure we flush pending tasklet*/
 882         synchronize_irq(priv->pci_dev->irq);
 883         tasklet_kill(&priv->irq_tasklet);
 884 }
 885
 886 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
 887 {
 888         u32 inta, handled = 0;
 889         u32 inta_fh;
 890         unsigned long flags;
 891         u32 i;
 892 #ifdef CONFIG_IWLWIFI_DEBUG
 893         u32 inta_mask;
 894 #endif
 895
 896         spin_lock_irqsave(&priv->lock, flags);
 897
 898         /* Ack/clear/reset pending uCode interrupts.
 899          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
 900          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
 901         inta = iwl_read32(priv, CSR_INT);
 902         iwl_write32(priv, CSR_INT, inta);
 903
 904         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
 905          * Any new interrupts that happen after this, either while we're
 906          * in this tasklet, or later, will show up in next ISR/tasklet. */
 907         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
 908         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
 909
 910 #ifdef CONFIG_IWLWIFI_DEBUG
 911         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
 912                 /* just for debug */
 913                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
 914                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
 915                               inta, inta_mask, inta_fh);
 916         }
 917 #endif
 918
 919         spin_unlock_irqrestore(&priv->lock, flags);
 920
 921         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
 922          * atomic, make sure that inta covers all the interrupts that
 923          * we've discovered, even if FH interrupt came in just after
 924          * reading CSR_INT. */
 925         if (inta_fh & CSR49_FH_INT_RX_MASK)
 926                 inta |= CSR_INT_BIT_FH_RX;
 927         if (inta_fh & CSR49_FH_INT_TX_MASK)
 928                 inta |= CSR_INT_BIT_FH_TX;
 929
 930         /* Now service all interrupt bits discovered above. */
 931         if (inta & CSR_INT_BIT_HW_ERR) {
 932                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
 933
 934                 /* Tell the device to stop sending interrupts */
 935                 iwl_disable_interrupts(priv);
 936
 937                 priv->isr_stats.hw++;
 938                 iwl_irq_handle_error(priv);
 939
 940                 handled |= CSR_INT_BIT_HW_ERR;
 941
 942                 return;
 943         }
 944
 945 #ifdef CONFIG_IWLWIFI_DEBUG
 946         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
 947                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
 948                 if (inta & CSR_INT_BIT_SCD) {
 949                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
 950                                       "the frame/frames.\n");
 951                         priv->isr_stats.sch++;
 952                 }
 953
 954                 /* Alive notification via Rx interrupt will do the real work */
 955                 if (inta & CSR_INT_BIT_ALIVE) {
 956                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
 957                         priv->isr_stats.alive++;
 958                 }
 959         }
 960 #endif
 961         /* Safely ignore these bits for debug checks below */
 962         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
 963
 964         /* HW RF KILL switch toggled */
 965         if (inta & CSR_INT_BIT_RF_KILL) {
 966                 int hw_rf_kill = 0;
 967                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
 968                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
 969                         hw_rf_kill = 1;
 970
 971                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
 972                                 hw_rf_kill ? "disable radio" : "enable radio");
 973
 974                 priv->isr_stats.rfkill++;
 975
 976                 /* driver only loads ucode once setting the interface up.
 977                  * the driver allows loading the ucode even if the radio
 978                  * is killed. Hence update the killswitch state here. The
 979                  * rfkill handler will care about restarting if needed.
 980                  */
 981                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
 982                         if (hw_rf_kill)
 983                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 984                         else
 985                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 986                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
 987                 }
 988
 989                 handled |= CSR_INT_BIT_RF_KILL;
 990         }
 991
 992         /* Chip got too hot and stopped itself */
 993         if (inta & CSR_INT_BIT_CT_KILL) {
 994                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
 995                 priv->isr_stats.ctkill++;
 996                 handled |= CSR_INT_BIT_CT_KILL;
 997         }
 998
 999         /* Error detected by uCode */
1000         if (inta & CSR_INT_BIT_SW_ERR) {
1001                 IWL_ERR(priv, "Microcode SW error detected. "
1002                         " Restarting 0x%X.\n", inta);
1003                 priv->isr_stats.sw++;
1004                 priv->isr_stats.sw_err = inta;
1005                 iwl_irq_handle_error(priv);
1006                 handled |= CSR_INT_BIT_SW_ERR;
1007         }
1008
1009         /*
1010          * uCode wakes up after power-down sleep.
1011          * Tell device about any new tx or host commands enqueued,
1012          * and about any Rx buffers made available while asleep.
1013          */
1014         if (inta & CSR_INT_BIT_WAKEUP) {
1015                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1016                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1017                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1018                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1019                 priv->isr_stats.wakeup++;
1020                 handled |= CSR_INT_BIT_WAKEUP;
1021         }
1022
1023         /* All uCode command responses, including Tx command responses,
1024          * Rx "responses" (frame-received notification), and other
1025          * notifications from uCode come through here*/
1026         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1027                 iwl_rx_handle(priv);
1028                 priv->isr_stats.rx++;
1029                 iwl_leds_background(priv);
1030                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1031         }
1032
1033         /* This "Tx" DMA channel is used only for loading uCode */
1034         if (inta & CSR_INT_BIT_FH_TX) {
1035                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1036                 priv->isr_stats.tx++;
1037                 handled |= CSR_INT_BIT_FH_TX;
1038                 /* Wake up uCode load routine, now that load is complete */
1039                 priv->ucode_write_complete = 1;
1040                 wake_up_interruptible(&priv->wait_command_queue);
1041         }
1042
1043         if (inta & ~handled) {
1044                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1045                 priv->isr_stats.unhandled++;
1046         }
1047
1048         if (inta & ~(priv->inta_mask)) {
1049                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1050                          inta & ~priv->inta_mask);
1051                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1052         }
1053
1054         /* Re-enable all interrupts */
1055         /* only Re-enable if diabled by irq */
1056         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1057                 iwl_enable_interrupts(priv);
1058
1059 #ifdef CONFIG_IWLWIFI_DEBUG
1060         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1061                 inta = iwl_read32(priv, CSR_INT);
1062                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1063                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1064                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1065                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1066         }
1067 #endif
1068 }
1069
1070 /* tasklet for iwlagn interrupt */
1071 static void iwl_irq_tasklet(struct iwl_priv *priv)
1072 {
1073         u32 inta = 0;
1074         u32 handled = 0;
1075         unsigned long flags;
1076 #ifdef CONFIG_IWLWIFI_DEBUG
1077         u32 inta_mask;
1078 #endif
1079
1080         spin_lock_irqsave(&priv->lock, flags);
1081
1082         /* Ack/clear/reset pending uCode interrupts.
1083          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1084          */
1085         iwl_write32(priv, CSR_INT, priv->inta);
1086
1087         inta = priv->inta;
1088
1089 #ifdef CONFIG_IWLWIFI_DEBUG
1090         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1091                 /* just for debug */
1092                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1093                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1094                                 inta, inta_mask);
1095         }
1096 #endif
1097
1098         spin_unlock_irqrestore(&priv->lock, flags);
1099
1100         /* saved interrupt in inta variable now we can reset priv->inta */
1101         priv->inta = 0;
1102
1103         /* Now service all interrupt bits discovered above. */
1104         if (inta & CSR_INT_BIT_HW_ERR) {
1105                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1106
1107                 /* Tell the device to stop sending interrupts */
1108                 iwl_disable_interrupts(priv);
1109
1110                 priv->isr_stats.hw++;
1111                 iwl_irq_handle_error(priv);
1112
1113                 handled |= CSR_INT_BIT_HW_ERR;
1114
1115                 return;
1116         }
1117
1118 #ifdef CONFIG_IWLWIFI_DEBUG
1119         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1120                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1121                 if (inta & CSR_INT_BIT_SCD) {
1122                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1123                                       "the frame/frames.\n");
1124                         priv->isr_stats.sch++;
1125                 }
1126
1127                 /* Alive notification via Rx interrupt will do the real work */
1128                 if (inta & CSR_INT_BIT_ALIVE) {
1129                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1130                         priv->isr_stats.alive++;
1131                 }
1132         }
1133 #endif
1134         /* Safely ignore these bits for debug checks below */
1135         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1136
1137         /* HW RF KILL switch toggled */
1138         if (inta & CSR_INT_BIT_RF_KILL) {
1139                 int hw_rf_kill = 0;
1140                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1141                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1142                         hw_rf_kill = 1;
1143
1144                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1145                                 hw_rf_kill ? "disable radio" : "enable radio");
1146
1147                 priv->isr_stats.rfkill++;
1148
1149                 /* driver only loads ucode once setting the interface up.
1150                  * the driver allows loading the ucode even if the radio
1151                  * is killed. Hence update the killswitch state here. The
1152                  * rfkill handler will care about restarting if needed.
1153                  */
1154                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1155                         if (hw_rf_kill)
1156                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1157                         else
1158                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1159                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1160                 }
1161
1162                 handled |= CSR_INT_BIT_RF_KILL;
1163         }
1164
1165         /* Chip got too hot and stopped itself */
1166         if (inta & CSR_INT_BIT_CT_KILL) {
1167                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1168                 priv->isr_stats.ctkill++;
1169                 handled |= CSR_INT_BIT_CT_KILL;
1170         }
1171
1172         /* Error detected by uCode */
1173         if (inta & CSR_INT_BIT_SW_ERR) {
1174                 IWL_ERR(priv, "Microcode SW error detected. "
1175                         " Restarting 0x%X.\n", inta);
1176                 priv->isr_stats.sw++;
1177                 priv->isr_stats.sw_err = inta;
1178                 iwl_irq_handle_error(priv);
1179                 handled |= CSR_INT_BIT_SW_ERR;
1180         }
1181
1182         /* uCode wakes up after power-down sleep */
1183         if (inta & CSR_INT_BIT_WAKEUP) {
1184                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1185                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1186                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1187                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1188                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1189                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1190                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1191                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1192
1193                 priv->isr_stats.wakeup++;
1194
1195                 handled |= CSR_INT_BIT_WAKEUP;
1196         }
1197
1198         /* All uCode command responses, including Tx command responses,
1199          * Rx "responses" (frame-received notification), and other
1200          * notifications from uCode come through here*/
1201         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1202                         CSR_INT_BIT_RX_PERIODIC)) {
1203                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1204                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1205                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1206                         iwl_write32(priv, CSR_FH_INT_STATUS,
1207                                         CSR49_FH_INT_RX_MASK);
1208                 }
1209                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1210                         handled |= CSR_INT_BIT_RX_PERIODIC;
1211                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1212                 }
1213                 /* Sending RX interrupt require many steps to be done in the
1214                  * the device:
1215                  * 1- write interrupt to current index in ICT table.
1216                  * 2- dma RX frame.
1217                  * 3- update RX shared data to indicate last write index.
1218                  * 4- send interrupt.
1219                  * This could lead to RX race, driver could receive RX interrupt
1220                  * but the shared data changes does not reflect this.
1221                  * this could lead to RX race, RX periodic will solve this race
1222                  */
1223                 iwl_write32(priv, CSR_INT_PERIODIC_REG,
1224                             CSR_INT_PERIODIC_DIS);
1225                 iwl_rx_handle(priv);
1226                 /* Only set RX periodic if real RX is received. */
1227                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1228                         iwl_write32(priv, CSR_INT_PERIODIC_REG,
1229                                     CSR_INT_PERIODIC_ENA);
1230
1231                 priv->isr_stats.rx++;
1232                 iwl_leds_background(priv);
1233         }
1234
1235         /* This "Tx" DMA channel is used only for loading uCode */
1236         if (inta & CSR_INT_BIT_FH_TX) {
1237                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1238                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1239                 priv->isr_stats.tx++;
1240                 handled |= CSR_INT_BIT_FH_TX;
1241                 /* Wake up uCode load routine, now that load is complete */
1242                 priv->ucode_write_complete = 1;
1243                 wake_up_interruptible(&priv->wait_command_queue);
1244         }
1245
1246         if (inta & ~handled) {
1247                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1248                 priv->isr_stats.unhandled++;
1249         }
1250
1251         if (inta & ~(priv->inta_mask)) {
1252                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1253                          inta & ~priv->inta_mask);
1254         }
1255
1256         /* Re-enable all interrupts */
1257         /* only Re-enable if diabled by irq */
1258         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1259                 iwl_enable_interrupts(priv);
1260 }
1261
1262
1263 /******************************************************************************
1264  *
1265  * uCode download functions
1266  *
1267  ******************************************************************************/
1268
1269 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1270 {
1271         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1272         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1273         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1274         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1275         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1276         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1277 }
1278
1279 static void iwl_nic_start(struct iwl_priv *priv)
1280 {
1281         /* Remove all resets to allow NIC to operate */
1282         iwl_write32(priv, CSR_RESET, 0);
1283 }
1284
1285
1286 /**
1287  * iwl_read_ucode - Read uCode images from disk file.
1288  *
1289  * Copy into buffers for card to fetch via bus-mastering
1290  */
1291 static int iwl_read_ucode(struct iwl_priv *priv)
1292 {
1293         struct iwl_ucode_header *ucode;
1294         int ret = -EINVAL, index;
1295         const struct firmware *ucode_raw;
1296         const char *name_pre = priv->cfg->fw_name_pre;
1297         const unsigned int api_max = priv->cfg->ucode_api_max;
1298         const unsigned int api_min = priv->cfg->ucode_api_min;
1299         char buf[25];
1300         u8 *src;
1301         size_t len;
1302         u32 api_ver, build;
1303         u32 inst_size, data_size, init_size, init_data_size, boot_size;
1304         u16 eeprom_ver;
1305
1306         /* Ask kernel firmware_class module to get the boot firmware off disk.
1307          * request_firmware() is synchronous, file is in memory on return. */
1308         for (index = api_max; index >= api_min; index--) {
1309                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1310                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1311                 if (ret < 0) {
1312                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
1313                                   buf, ret);
1314                         if (ret == -ENOENT)
1315                                 continue;
1316                         else
1317                                 goto error;
1318                 } else {
1319                         if (index < api_max)
1320                                 IWL_ERR(priv, "Loaded firmware %s, "
1321                                         "which is deprecated. "
1322                                         "Please use API v%u instead.\n",
1323                                           buf, api_max);
1324
1325                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1326                                        buf, ucode_raw->size);
1327                         break;
1328                 }
1329         }
1330
1331         if (ret < 0)
1332                 goto error;
1333
1334         /* Make sure that we got at least the v1 header! */
1335         if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
1336                 IWL_ERR(priv, "File size way too small!\n");
1337                 ret = -EINVAL;
1338                 goto err_release;
1339         }
1340
1341         /* Data from ucode file:  header followed by uCode images */
1342         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1343
1344         priv->ucode_ver = le32_to_cpu(ucode->ver);
1345         api_ver = IWL_UCODE_API(priv->ucode_ver);
1346         build = priv->cfg->ops->ucode->get_build(ucode, api_ver);
1347         inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
1348         data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
1349         init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
1350         init_data_size =
1351                 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
1352         boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
1353         src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
1354
1355         /* api_ver should match the api version forming part of the
1356          * firmware filename ... but we don't check for that and only rely
1357          * on the API version read from firmware header from here on forward */
1358
1359         if (api_ver < api_min || api_ver > api_max) {
1360                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1361                           "Driver supports v%u, firmware is v%u.\n",
1362                           api_max, api_ver);
1363                 priv->ucode_ver = 0;
1364                 ret = -EINVAL;
1365                 goto err_release;
1366         }
1367         if (api_ver != api_max)
1368                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1369                           "got v%u. New firmware can be obtained "
1370                           "from http://www.intellinuxwireless.org.\n",
1371                           api_max, api_ver);
1372
1373         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1374                IWL_UCODE_MAJOR(priv->ucode_ver),
1375                IWL_UCODE_MINOR(priv->ucode_ver),
1376                IWL_UCODE_API(priv->ucode_ver),
1377                IWL_UCODE_SERIAL(priv->ucode_ver));
1378
1379         snprintf(priv->hw->wiphy->fw_version,
1380                  sizeof(priv->hw->wiphy->fw_version),
1381                  "%u.%u.%u.%u",
1382                  IWL_UCODE_MAJOR(priv->ucode_ver),
1383                  IWL_UCODE_MINOR(priv->ucode_ver),
1384                  IWL_UCODE_API(priv->ucode_ver),
1385                  IWL_UCODE_SERIAL(priv->ucode_ver));
1386
1387         if (build)
1388                 IWL_DEBUG_INFO(priv, "Build %u\n", build);
1389
1390         eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
1391         IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
1392                        (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
1393                        ? "OTP" : "EEPROM", eeprom_ver);
1394
1395         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1396                        priv->ucode_ver);
1397         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1398                        inst_size);
1399         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1400                        data_size);
1401         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1402                        init_size);
1403         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1404                        init_data_size);
1405         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1406                        boot_size);
1407
1408         /* Verify size of file vs. image size info in file's header */
1409         if (ucode_raw->size !=
1410                 priv->cfg->ops->ucode->get_header_size(api_ver) +
1411                 inst_size + data_size + init_size +
1412                 init_data_size + boot_size) {
1413
1414                 IWL_DEBUG_INFO(priv,
1415                         "uCode file size %d does not match expected size\n",
1416                         (int)ucode_raw->size);
1417                 ret = -EINVAL;
1418                 goto err_release;
1419         }
1420
1421         /* Verify that uCode images will fit in card's SRAM */
1422         if (inst_size > priv->hw_params.max_inst_size) {
1423                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1424                                inst_size);
1425                 ret = -EINVAL;
1426                 goto err_release;
1427         }
1428
1429         if (data_size > priv->hw_params.max_data_size) {
1430                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1431                                 data_size);
1432                 ret = -EINVAL;
1433                 goto err_release;
1434         }
1435         if (init_size > priv->hw_params.max_inst_size) {
1436                 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1437                         init_size);
1438                 ret = -EINVAL;
1439                 goto err_release;
1440         }
1441         if (init_data_size > priv->hw_params.max_data_size) {
1442                 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1443                       init_data_size);
1444                 ret = -EINVAL;
1445                 goto err_release;
1446         }
1447         if (boot_size > priv->hw_params.max_bsm_size) {
1448                 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1449                         boot_size);
1450                 ret = -EINVAL;
1451                 goto err_release;
1452         }
1453
1454         /* Allocate ucode buffers for card's bus-master loading ... */
1455
1456         /* Runtime instructions and 2 copies of data:
1457          * 1) unmodified from disk
1458          * 2) backup cache for save/restore during power-downs */
1459         priv->ucode_code.len = inst_size;
1460         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1461
1462         priv->ucode_data.len = data_size;
1463         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1464
1465         priv->ucode_data_backup.len = data_size;
1466         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1467
1468         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1469             !priv->ucode_data_backup.v_addr)
1470                 goto err_pci_alloc;
1471
1472         /* Initialization instructions and data */
1473         if (init_size && init_data_size) {
1474                 priv->ucode_init.len = init_size;
1475                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1476
1477                 priv->ucode_init_data.len = init_data_size;
1478                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1479
1480                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1481                         goto err_pci_alloc;
1482         }
1483
1484         /* Bootstrap (instructions only, no data) */
1485         if (boot_size) {
1486                 priv->ucode_boot.len = boot_size;
1487                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1488
1489                 if (!priv->ucode_boot.v_addr)
1490                         goto err_pci_alloc;
1491         }
1492
1493         /* Copy images into buffers for card's bus-master reads ... */
1494
1495         /* Runtime instructions (first block of data in file) */
1496         len = inst_size;
1497         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1498         memcpy(priv->ucode_code.v_addr, src, len);
1499         src += len;
1500
1501         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1502                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1503
1504         /* Runtime data (2nd block)
1505          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1506         len = data_size;
1507         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1508         memcpy(priv->ucode_data.v_addr, src, len);
1509         memcpy(priv->ucode_data_backup.v_addr, src, len);
1510         src += len;
1511
1512         /* Initialization instructions (3rd block) */
1513         if (init_size) {
1514                 len = init_size;
1515                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1516                                 len);
1517                 memcpy(priv->ucode_init.v_addr, src, len);
1518                 src += len;
1519         }
1520
1521         /* Initialization data (4th block) */
1522         if (init_data_size) {
1523                 len = init_data_size;
1524                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1525                                len);
1526                 memcpy(priv->ucode_init_data.v_addr, src, len);
1527                 src += len;
1528         }
1529
1530         /* Bootstrap instructions (5th block) */
1531         len = boot_size;
1532         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1533         memcpy(priv->ucode_boot.v_addr, src, len);
1534
1535         /* We have our copies now, allow OS release its copies */
1536         release_firmware(ucode_raw);
1537         return 0;
1538
1539  err_pci_alloc:
1540         IWL_ERR(priv, "failed to allocate pci memory\n");
1541         ret = -ENOMEM;
1542         iwl_dealloc_ucode_pci(priv);
1543
1544  err_release:
1545         release_firmware(ucode_raw);
1546
1547  error:
1548         return ret;
1549 }
1550
1551 #ifdef CONFIG_IWLWIFI_DEBUG
1552 static const char *desc_lookup_text[] = {
1553         "OK",
1554         "FAIL",
1555         "BAD_PARAM",
1556         "BAD_CHECKSUM",
1557         "NMI_INTERRUPT_WDG",
1558         "SYSASSERT",
1559         "FATAL_ERROR",
1560         "BAD_COMMAND",
1561         "HW_ERROR_TUNE_LOCK",
1562         "HW_ERROR_TEMPERATURE",
1563         "ILLEGAL_CHAN_FREQ",
1564         "VCC_NOT_STABLE",
1565         "FH_ERROR",
1566         "NMI_INTERRUPT_HOST",
1567         "NMI_INTERRUPT_ACTION_PT",
1568         "NMI_INTERRUPT_UNKNOWN",
1569         "UCODE_VERSION_MISMATCH",
1570         "HW_ERROR_ABS_LOCK",
1571         "HW_ERROR_CAL_LOCK_FAIL",
1572         "NMI_INTERRUPT_INST_ACTION_PT",
1573         "NMI_INTERRUPT_DATA_ACTION_PT",
1574         "NMI_TRM_HW_ER",
1575         "NMI_INTERRUPT_TRM",
1576         "NMI_INTERRUPT_BREAK_POINT"
1577         "DEBUG_0",
1578         "DEBUG_1",
1579         "DEBUG_2",
1580         "DEBUG_3",
1581         "UNKNOWN"
1582 };
1583
1584 static const char *desc_lookup(int i)
1585 {
1586         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1587
1588         if (i < 0 || i > max)
1589                 i = max;
1590
1591         return desc_lookup_text[i];
1592 }
1593
1594 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1595 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1596
1597 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1598 {
1599         u32 data2, line;
1600         u32 desc, time, count, base, data1;
1601         u32 blink1, blink2, ilink1, ilink2;
1602
1603         if (priv->ucode_type == UCODE_INIT)
1604                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1605         else
1606                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1607
1608         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1609                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1610                 return;
1611         }
1612
1613         count = iwl_read_targ_mem(priv, base);
1614
1615         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1616                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1617                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1618                         priv->status, count);
1619         }
1620
1621         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1622         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1623         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1624         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1625         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1626         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1627         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1628         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1629         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1630
1631         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1632                                       blink1, blink2, ilink1, ilink2);
1633
1634         IWL_ERR(priv, "Desc                               Time       "
1635                 "data1      data2      line\n");
1636         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1637                 desc_lookup(desc), desc, time, data1, data2, line);
1638         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1639         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1640                 ilink1, ilink2);
1641
1642 }
1643
1644 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1645
1646 /**
1647  * iwl_print_event_log - Dump error event log to syslog
1648  *
1649  */
1650 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1651                                 u32 num_events, u32 mode)
1652 {
1653         u32 i;
1654         u32 base;       /* SRAM byte address of event log header */
1655         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1656         u32 ptr;        /* SRAM byte address of log data */
1657         u32 ev, time, data; /* event log data */
1658
1659         if (num_events == 0)
1660                 return;
1661         if (priv->ucode_type == UCODE_INIT)
1662                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1663         else
1664                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1665
1666         if (mode == 0)
1667                 event_size = 2 * sizeof(u32);
1668         else
1669                 event_size = 3 * sizeof(u32);
1670
1671         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1672
1673         /* "time" is actually "data" for mode 0 (no timestamp).
1674         * place event id # at far right for easier visual parsing. */
1675         for (i = 0; i < num_events; i++) {
1676                 ev = iwl_read_targ_mem(priv, ptr);
1677                 ptr += sizeof(u32);
1678                 time = iwl_read_targ_mem(priv, ptr);
1679                 ptr += sizeof(u32);
1680                 if (mode == 0) {
1681                         /* data, ev */
1682                         trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1683                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1684                 } else {
1685                         data = iwl_read_targ_mem(priv, ptr);
1686                         ptr += sizeof(u32);
1687                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1688                                         time, data, ev);
1689                         trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1690                 }
1691         }
1692 }
1693
1694 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1695 {
1696         u32 base;       /* SRAM byte address of event log header */
1697         u32 capacity;   /* event log capacity in # entries */
1698         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1699         u32 num_wraps;  /* # times uCode wrapped to top of log */
1700         u32 next_entry; /* index of next entry to be written by uCode */
1701         u32 size;       /* # entries that we'll print */
1702
1703         if (priv->ucode_type == UCODE_INIT)
1704                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1705         else
1706                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1707
1708         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1709                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1710                 return;
1711         }
1712
1713         /* event log header */
1714         capacity = iwl_read_targ_mem(priv, base);
1715         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1716         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1717         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1718
1719         size = num_wraps ? capacity : next_entry;
1720
1721         /* bail out if nothing in log */
1722         if (size == 0) {
1723                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1724                 return;
1725         }
1726
1727         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1728                         size, num_wraps);
1729
1730         /* if uCode has wrapped back to top of log, start at the oldest entry,
1731          * i.e the next one that uCode would fill. */
1732         if (num_wraps)
1733                 iwl_print_event_log(priv, next_entry,
1734                                         capacity - next_entry, mode);
1735         /* (then/else) start at top of log */
1736         iwl_print_event_log(priv, 0, next_entry, mode);
1737
1738 }
1739 #endif
1740
1741 /**
1742  * iwl_alive_start - called after REPLY_ALIVE notification received
1743  *                   from protocol/runtime uCode (initialization uCode's
1744  *                   Alive gets handled by iwl_init_alive_start()).
1745  */
1746 static void iwl_alive_start(struct iwl_priv *priv)
1747 {
1748         int ret = 0;
1749
1750         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1751
1752         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1753                 /* We had an error bringing up the hardware, so take it
1754                  * all the way back down so we can try again */
1755                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1756                 goto restart;
1757         }
1758
1759         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1760          * This is a paranoid check, because we would not have gotten the
1761          * "runtime" alive if code weren't properly loaded.  */
1762         if (iwl_verify_ucode(priv)) {
1763                 /* Runtime instruction load was bad;
1764                  * take it all the way back down so we can try again */
1765                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1766                 goto restart;
1767         }
1768
1769         iwl_clear_stations_table(priv);
1770         ret = priv->cfg->ops->lib->alive_notify(priv);
1771         if (ret) {
1772                 IWL_WARN(priv,
1773                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
1774                 goto restart;
1775         }
1776
1777         /* After the ALIVE response, we can send host commands to the uCode */
1778         set_bit(STATUS_ALIVE, &priv->status);
1779
1780         if (iwl_is_rfkill(priv))
1781                 return;
1782
1783         ieee80211_wake_queues(priv->hw);
1784
1785         priv->active_rate = priv->rates_mask;
1786         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1787
1788         /* Configure Tx antenna selection based on H/W config */
1789         if (priv->cfg->ops->hcmd->set_tx_ant)
1790                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
1791
1792         if (iwl_is_associated(priv)) {
1793                 struct iwl_rxon_cmd *active_rxon =
1794                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1795                 /* apply any changes in staging */
1796                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1797                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1798         } else {
1799                 /* Initialize our rx_config data */
1800                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1801
1802                 if (priv->cfg->ops->hcmd->set_rxon_chain)
1803                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
1804
1805                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1806         }
1807
1808         /* Configure Bluetooth device coexistence support */
1809         iwl_send_bt_config(priv);
1810
1811         iwl_reset_run_time_calib(priv);
1812
1813         /* Configure the adapter for unassociated operation */
1814         iwlcore_commit_rxon(priv);
1815
1816         /* At this point, the NIC is initialized and operational */
1817         iwl_rf_kill_ct_config(priv);
1818
1819         iwl_leds_init(priv);
1820
1821         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1822         set_bit(STATUS_READY, &priv->status);
1823         wake_up_interruptible(&priv->wait_command_queue);
1824
1825         iwl_power_update_mode(priv, true);
1826
1827         /* reassociate for ADHOC mode */
1828         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1829                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1830                                                                 priv->vif);
1831                 if (beacon)
1832                         iwl_mac_beacon_update(priv->hw, beacon);
1833         }
1834
1835
1836         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1837                 iwl_set_mode(priv, priv->iw_mode);
1838
1839         return;
1840
1841  restart:
1842         queue_work(priv->workqueue, &priv->restart);
1843 }
1844
1845 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1846
1847 static void __iwl_down(struct iwl_priv *priv)
1848 {
1849         unsigned long flags;
1850         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1851
1852         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1853
1854         if (!exit_pending)
1855                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1856
1857         iwl_clear_stations_table(priv);
1858
1859         /* Unblock any waiting calls */
1860         wake_up_interruptible_all(&priv->wait_command_queue);
1861
1862         /* Wipe out the EXIT_PENDING status bit if we are not actually
1863          * exiting the module */
1864         if (!exit_pending)
1865                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1866
1867         /* stop and reset the on-board processor */
1868         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1869
1870         /* tell the device to stop sending interrupts */
1871         spin_lock_irqsave(&priv->lock, flags);
1872         iwl_disable_interrupts(priv);
1873         spin_unlock_irqrestore(&priv->lock, flags);
1874         iwl_synchronize_irq(priv);
1875
1876         if (priv->mac80211_registered)
1877                 ieee80211_stop_queues(priv->hw);
1878
1879         /* If we have not previously called iwl_init() then
1880          * clear all bits but the RF Kill bit and return */
1881         if (!iwl_is_init(priv)) {
1882                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1883                                         STATUS_RF_KILL_HW |
1884                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1885                                         STATUS_GEO_CONFIGURED |
1886                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1887                                         STATUS_EXIT_PENDING;
1888                 goto exit;
1889         }
1890
1891         /* ...otherwise clear out all the status bits but the RF Kill
1892          * bit and continue taking the NIC down. */
1893         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1894                                 STATUS_RF_KILL_HW |
1895                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1896                                 STATUS_GEO_CONFIGURED |
1897                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1898                                 STATUS_FW_ERROR |
1899                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1900                                 STATUS_EXIT_PENDING;
1901
1902         /* device going down, Stop using ICT table */
1903         iwl_disable_ict(priv);
1904         spin_lock_irqsave(&priv->lock, flags);
1905         iwl_clear_bit(priv, CSR_GP_CNTRL,
1906                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1907         spin_unlock_irqrestore(&priv->lock, flags);
1908
1909         iwl_txq_ctx_stop(priv);
1910         iwl_rxq_stop(priv);
1911
1912         iwl_write_prph(priv, APMG_CLK_DIS_REG,
1913                                 APMG_CLK_VAL_DMA_CLK_RQT);
1914
1915         udelay(5);
1916
1917         /* Stop the device, and put it in low power state */
1918         priv->cfg->ops->lib->apm_ops.stop(priv);
1919
1920  exit:
1921         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1922
1923         if (priv->ibss_beacon)
1924                 dev_kfree_skb(priv->ibss_beacon);
1925         priv->ibss_beacon = NULL;
1926
1927         /* clear out any free frames */
1928         iwl_clear_free_frames(priv);
1929 }
1930
1931 static void iwl_down(struct iwl_priv *priv)
1932 {
1933         mutex_lock(&priv->mutex);
1934         __iwl_down(priv);
1935         mutex_unlock(&priv->mutex);
1936
1937         iwl_cancel_deferred_work(priv);
1938 }
1939
1940 #define HW_READY_TIMEOUT (50)
1941
1942 static int iwl_set_hw_ready(struct iwl_priv *priv)
1943 {
1944         int ret = 0;
1945
1946         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1947                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
1948
1949         /* See if we got it */
1950         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1951                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1952                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1953                                 HW_READY_TIMEOUT);
1954         if (ret != -ETIMEDOUT)
1955                 priv->hw_ready = true;
1956         else
1957                 priv->hw_ready = false;
1958
1959         IWL_DEBUG_INFO(priv, "hardware %s\n",
1960                       (priv->hw_ready == 1) ? "ready" : "not ready");
1961         return ret;
1962 }
1963
1964 static int iwl_prepare_card_hw(struct iwl_priv *priv)
1965 {
1966         int ret = 0;
1967
1968         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n");
1969
1970         ret = iwl_set_hw_ready(priv);
1971         if (priv->hw_ready)
1972                 return ret;
1973
1974         /* If HW is not ready, prepare the conditions to check again */
1975         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1976                         CSR_HW_IF_CONFIG_REG_PREPARE);
1977
1978         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1979                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
1980                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
1981
1982         /* HW should be ready by now, check again. */
1983         if (ret != -ETIMEDOUT)
1984                 iwl_set_hw_ready(priv);
1985
1986         return ret;
1987 }
1988
1989 #define MAX_HW_RESTARTS 5
1990
1991 static int __iwl_up(struct iwl_priv *priv)
1992 {
1993         int i;
1994         int ret;
1995
1996         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1997                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1998                 return -EIO;
1999         }
2000
2001         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2002                 IWL_ERR(priv, "ucode not available for device bringup\n");
2003                 return -EIO;
2004         }
2005
2006         iwl_prepare_card_hw(priv);
2007
2008         if (!priv->hw_ready) {
2009                 IWL_WARN(priv, "Exit HW not ready\n");
2010                 return -EIO;
2011         }
2012
2013         /* If platform's RF_KILL switch is NOT set to KILL */
2014         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2015                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2016         else
2017                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2018
2019         if (iwl_is_rfkill(priv)) {
2020                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2021
2022                 iwl_enable_interrupts(priv);
2023                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2024                 return 0;
2025         }
2026
2027         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2028
2029         ret = iwl_hw_nic_init(priv);
2030         if (ret) {
2031                 IWL_ERR(priv, "Unable to init nic\n");
2032                 return ret;
2033         }
2034
2035         /* make sure rfkill handshake bits are cleared */
2036         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2037         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2038                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2039
2040         /* clear (again), then enable host interrupts */
2041         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2042         iwl_enable_interrupts(priv);
2043
2044         /* really make sure rfkill handshake bits are cleared */
2045         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2046         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2047
2048         /* Copy original ucode data image from disk into backup cache.
2049          * This will be used to initialize the on-board processor's
2050          * data SRAM for a clean start when the runtime program first loads. */
2051         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2052                priv->ucode_data.len);
2053
2054         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2055
2056                 iwl_clear_stations_table(priv);
2057
2058                 /* load bootstrap state machine,
2059                  * load bootstrap program into processor's memory,
2060                  * prepare to load the "initialize" uCode */
2061                 ret = priv->cfg->ops->lib->load_ucode(priv);
2062
2063                 if (ret) {
2064                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2065                                 ret);
2066                         continue;
2067                 }
2068
2069                 /* start card; "initialize" will load runtime ucode */
2070                 iwl_nic_start(priv);
2071
2072                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2073
2074                 return 0;
2075         }
2076
2077         set_bit(STATUS_EXIT_PENDING, &priv->status);
2078         __iwl_down(priv);
2079         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2080
2081         /* tried to restart and config the device for as long as our
2082          * patience could withstand */
2083         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2084         return -EIO;
2085 }
2086
2087
2088 /*****************************************************************************
2089  *
2090  * Workqueue callbacks
2091  *
2092  *****************************************************************************/
2093
2094 static void iwl_bg_init_alive_start(struct work_struct *data)
2095 {
2096         struct iwl_priv *priv =
2097             container_of(data, struct iwl_priv, init_alive_start.work);
2098
2099         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2100                 return;
2101
2102         mutex_lock(&priv->mutex);
2103         priv->cfg->ops->lib->init_alive_start(priv);
2104         mutex_unlock(&priv->mutex);
2105 }
2106
2107 static void iwl_bg_alive_start(struct work_struct *data)
2108 {
2109         struct iwl_priv *priv =
2110             container_of(data, struct iwl_priv, alive_start.work);
2111
2112         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2113                 return;
2114
2115         /* enable dram interrupt */
2116         iwl_reset_ict(priv);
2117
2118         mutex_lock(&priv->mutex);
2119         iwl_alive_start(priv);
2120         mutex_unlock(&priv->mutex);
2121 }
2122
2123 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2124 {
2125         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2126                         run_time_calib_work);
2127
2128         mutex_lock(&priv->mutex);
2129
2130         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2131             test_bit(STATUS_SCANNING, &priv->status)) {
2132                 mutex_unlock(&priv->mutex);
2133                 return;
2134         }
2135
2136         if (priv->start_calib) {
2137                 iwl_chain_noise_calibration(priv, &priv->statistics);
2138
2139                 iwl_sensitivity_calibration(priv, &priv->statistics);
2140         }
2141
2142         mutex_unlock(&priv->mutex);
2143         return;
2144 }
2145
2146 static void iwl_bg_up(struct work_struct *data)
2147 {
2148         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2149
2150         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2151                 return;
2152
2153         mutex_lock(&priv->mutex);
2154         __iwl_up(priv);
2155         mutex_unlock(&priv->mutex);
2156 }
2157
2158 static void iwl_bg_restart(struct work_struct *data)
2159 {
2160         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2161
2162         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2163                 return;
2164
2165         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2166                 mutex_lock(&priv->mutex);
2167                 priv->vif = NULL;
2168                 priv->is_open = 0;
2169                 mutex_unlock(&priv->mutex);
2170                 iwl_down(priv);
2171                 ieee80211_restart_hw(priv->hw);
2172         } else {
2173                 iwl_down(priv);
2174                 queue_work(priv->workqueue, &priv->up);
2175         }
2176 }
2177
2178 static void iwl_bg_rx_replenish(struct work_struct *data)
2179 {
2180         struct iwl_priv *priv =
2181             container_of(data, struct iwl_priv, rx_replenish);
2182
2183         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2184                 return;
2185
2186         mutex_lock(&priv->mutex);
2187         iwl_rx_replenish(priv);
2188         mutex_unlock(&priv->mutex);
2189 }
2190
2191 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2192
2193 void iwl_post_associate(struct iwl_priv *priv)
2194 {
2195         struct ieee80211_conf *conf = NULL;
2196         int ret = 0;
2197         unsigned long flags;
2198
2199         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2200                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2201                 return;
2202         }
2203
2204         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2205                         priv->assoc_id, priv->active_rxon.bssid_addr);
2206
2207
2208         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2209                 return;
2210
2211
2212         if (!priv->vif || !priv->is_open)
2213                 return;
2214
2215         iwl_scan_cancel_timeout(priv, 200);
2216
2217         conf = ieee80211_get_hw_conf(priv->hw);
2218
2219         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2220         iwlcore_commit_rxon(priv);
2221
2222         iwl_setup_rxon_timing(priv);
2223         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2224                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2225         if (ret)
2226                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2227                             "Attempting to continue.\n");
2228
2229         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2230
2231         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2232
2233         if (priv->cfg->ops->hcmd->set_rxon_chain)
2234                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2235
2236         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2237
2238         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2239                         priv->assoc_id, priv->beacon_int);
2240
2241         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2242                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2243         else
2244                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2245
2246         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2247                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2248                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2249                 else
2250                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2251
2252                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2253                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2254
2255         }
2256
2257         iwlcore_commit_rxon(priv);
2258
2259         switch (priv->iw_mode) {
2260         case NL80211_IFTYPE_STATION:
2261                 break;
2262
2263         case NL80211_IFTYPE_ADHOC:
2264
2265                 /* assume default assoc id */
2266                 priv->assoc_id = 1;
2267
2268                 iwl_rxon_add_station(priv, priv->bssid, 0);
2269                 iwl_send_beacon_cmd(priv);
2270
2271                 break;
2272
2273         default:
2274                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2275                           __func__, priv->iw_mode);
2276                 break;
2277         }
2278
2279         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2280                 priv->assoc_station_added = 1;
2281
2282         spin_lock_irqsave(&priv->lock, flags);
2283         iwl_activate_qos(priv, 0);
2284         spin_unlock_irqrestore(&priv->lock, flags);
2285
2286         /* the chain noise calibration will enabled PM upon completion
2287          * If chain noise has already been run, then we need to enable
2288          * power management here */
2289         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2290                 iwl_power_update_mode(priv, false);
2291
2292         /* Enable Rx differential gain and sensitivity calibrations */
2293         iwl_chain_noise_reset(priv);
2294         priv->start_calib = 1;
2295
2296 }
2297
2298 /*****************************************************************************
2299  *
2300  * mac80211 entry point functions
2301  *
2302  *****************************************************************************/
2303
2304 #define UCODE_READY_TIMEOUT     (4 * HZ)
2305
2306 /*
2307  * Not a mac80211 entry point function, but it fits in with all the
2308  * other mac80211 functions grouped here.
2309  */
2310 static int iwl_setup_mac(struct iwl_priv *priv)
2311 {
2312         int ret;
2313         struct ieee80211_hw *hw = priv->hw;
2314         hw->rate_control_algorithm = "iwl-agn-rs";
2315
2316         /* Tell mac80211 our characteristics */
2317         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2318                     IEEE80211_HW_NOISE_DBM |
2319                     IEEE80211_HW_AMPDU_AGGREGATION |
2320                     IEEE80211_HW_SPECTRUM_MGMT;
2321
2322         if (!priv->cfg->broken_powersave)
2323                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2324                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2325
2326         hw->sta_data_size = sizeof(struct iwl_station_priv);
2327         hw->wiphy->interface_modes =
2328                 BIT(NL80211_IFTYPE_STATION) |
2329                 BIT(NL80211_IFTYPE_ADHOC);
2330
2331         hw->wiphy->custom_regulatory = true;
2332
2333         /* Firmware does not support this */
2334         hw->wiphy->disable_beacon_hints = true;
2335
2336         /*
2337          * For now, disable PS by default because it affects
2338          * RX performance significantly.
2339          */
2340         hw->wiphy->ps_default = false;
2341
2342         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2343         /* we create the 802.11 header and a zero-length SSID element */
2344         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
2345
2346         /* Default value; 4 EDCA QOS priorities */
2347         hw->queues = 4;
2348
2349         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2350
2351         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2352                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2353                         &priv->bands[IEEE80211_BAND_2GHZ];
2354         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2355                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2356                         &priv->bands[IEEE80211_BAND_5GHZ];
2357
2358         ret = ieee80211_register_hw(priv->hw);
2359         if (ret) {
2360                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2361                 return ret;
2362         }
2363         priv->mac80211_registered = 1;
2364
2365         return 0;
2366 }
2367
2368
2369 static int iwl_mac_start(struct ieee80211_hw *hw)
2370 {
2371         struct iwl_priv *priv = hw->priv;
2372         int ret;
2373
2374         IWL_DEBUG_MAC80211(priv, "enter\n");
2375
2376         /* we should be verifying the device is ready to be opened */
2377         mutex_lock(&priv->mutex);
2378
2379         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2380          * ucode filename and max sizes are card-specific. */
2381
2382         if (!priv->ucode_code.len) {
2383                 ret = iwl_read_ucode(priv);
2384                 if (ret) {
2385                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2386                         mutex_unlock(&priv->mutex);
2387                         return ret;
2388                 }
2389         }
2390
2391         ret = __iwl_up(priv);
2392
2393         mutex_unlock(&priv->mutex);
2394
2395         if (ret)
2396                 return ret;
2397
2398         if (iwl_is_rfkill(priv))
2399                 goto out;
2400
2401         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2402
2403         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2404          * mac80211 will not be run successfully. */
2405         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2406                         test_bit(STATUS_READY, &priv->status),
2407                         UCODE_READY_TIMEOUT);
2408         if (!ret) {
2409                 if (!test_bit(STATUS_READY, &priv->status)) {
2410                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2411                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2412                         return -ETIMEDOUT;
2413                 }
2414         }
2415
2416         iwl_led_start(priv);
2417
2418 out:
2419         priv->is_open = 1;
2420         IWL_DEBUG_MAC80211(priv, "leave\n");
2421         return 0;
2422 }
2423
2424 static void iwl_mac_stop(struct ieee80211_hw *hw)
2425 {
2426         struct iwl_priv *priv = hw->priv;
2427
2428         IWL_DEBUG_MAC80211(priv, "enter\n");
2429
2430         if (!priv->is_open)
2431                 return;
2432
2433         priv->is_open = 0;
2434
2435         if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
2436                 /* stop mac, cancel any scan request and clear
2437                  * RXON_FILTER_ASSOC_MSK BIT
2438                  */
2439                 mutex_lock(&priv->mutex);
2440                 iwl_scan_cancel_timeout(priv, 100);
2441                 mutex_unlock(&priv->mutex);
2442         }
2443
2444         iwl_down(priv);
2445
2446         flush_workqueue(priv->workqueue);
2447
2448         /* enable interrupts again in order to receive rfkill changes */
2449         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2450         iwl_enable_interrupts(priv);
2451
2452         IWL_DEBUG_MAC80211(priv, "leave\n");
2453 }
2454
2455 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2456 {
2457         struct iwl_priv *priv = hw->priv;
2458
2459         IWL_DEBUG_MACDUMP(priv, "enter\n");
2460
2461         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2462                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2463
2464         if (iwl_tx_skb(priv, skb))
2465                 dev_kfree_skb_any(skb);
2466
2467         IWL_DEBUG_MACDUMP(priv, "leave\n");
2468         return NETDEV_TX_OK;
2469 }
2470
2471 void iwl_config_ap(struct iwl_priv *priv)
2472 {
2473         int ret = 0;
2474         unsigned long flags;
2475
2476         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2477                 return;
2478
2479         /* The following should be done only at AP bring up */
2480         if (!iwl_is_associated(priv)) {
2481
2482                 /* RXON - unassoc (to set timing command) */
2483                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2484                 iwlcore_commit_rxon(priv);
2485
2486                 /* RXON Timing */
2487                 iwl_setup_rxon_timing(priv);
2488                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2489                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2490                 if (ret)
2491                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2492                                         "Attempting to continue.\n");
2493
2494                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2495                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2496
2497                 /* FIXME: what should be the assoc_id for AP? */
2498                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2499                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2500                         priv->staging_rxon.flags |=
2501                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2502                 else
2503                         priv->staging_rxon.flags &=
2504                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2505
2506                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2507                         if (priv->assoc_capability &
2508                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2509                                 priv->staging_rxon.flags |=
2510                                         RXON_FLG_SHORT_SLOT_MSK;
2511                         else
2512                                 priv->staging_rxon.flags &=
2513                                         ~RXON_FLG_SHORT_SLOT_MSK;
2514
2515                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2516                                 priv->staging_rxon.flags &=
2517                                         ~RXON_FLG_SHORT_SLOT_MSK;
2518                 }
2519                 /* restore RXON assoc */
2520                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2521                 iwlcore_commit_rxon(priv);
2522                 spin_lock_irqsave(&priv->lock, flags);
2523                 iwl_activate_qos(priv, 1);
2524                 spin_unlock_irqrestore(&priv->lock, flags);
2525                 iwl_add_bcast_station(priv);
2526         }
2527         iwl_send_beacon_cmd(priv);
2528
2529         /* FIXME - we need to add code here to detect a totally new
2530          * configuration, reset the AP, unassoc, rxon timing, assoc,
2531          * clear sta table, add BCAST sta... */
2532 }
2533
2534 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2535                         struct ieee80211_key_conf *keyconf, const u8 *addr,
2536                         u32 iv32, u16 *phase1key)
2537 {
2538
2539         struct iwl_priv *priv = hw->priv;
2540         IWL_DEBUG_MAC80211(priv, "enter\n");
2541
2542         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2543
2544         IWL_DEBUG_MAC80211(priv, "leave\n");
2545 }
2546
2547 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2548                            struct ieee80211_vif *vif,
2549                            struct ieee80211_sta *sta,
2550                            struct ieee80211_key_conf *key)
2551 {
2552         struct iwl_priv *priv = hw->priv;
2553         const u8 *addr;
2554         int ret;
2555         u8 sta_id;
2556         bool is_default_wep_key = false;
2557
2558         IWL_DEBUG_MAC80211(priv, "enter\n");
2559
2560         if (priv->cfg->mod_params->sw_crypto) {
2561                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2562                 return -EOPNOTSUPP;
2563         }
2564         addr = sta ? sta->addr : iwl_bcast_addr;
2565         sta_id = iwl_find_station(priv, addr);
2566         if (sta_id == IWL_INVALID_STATION) {
2567                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2568                                    addr);
2569                 return -EINVAL;
2570
2571         }
2572
2573         mutex_lock(&priv->mutex);
2574         iwl_scan_cancel_timeout(priv, 100);
2575         mutex_unlock(&priv->mutex);
2576
2577         /* If we are getting WEP group key and we didn't receive any key mapping
2578          * so far, we are in legacy wep mode (group key only), otherwise we are
2579          * in 1X mode.
2580          * In legacy wep mode, we use another host command to the uCode */
2581         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2582                 priv->iw_mode != NL80211_IFTYPE_AP) {
2583                 if (cmd == SET_KEY)
2584                         is_default_wep_key = !priv->key_mapping_key;
2585                 else
2586                         is_default_wep_key =
2587                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2588         }
2589
2590         switch (cmd) {
2591         case SET_KEY:
2592                 if (is_default_wep_key)
2593                         ret = iwl_set_default_wep_key(priv, key);
2594                 else
2595                         ret = iwl_set_dynamic_key(priv, key, sta_id);
2596
2597                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2598                 break;
2599         case DISABLE_KEY:
2600                 if (is_default_wep_key)
2601                         ret = iwl_remove_default_wep_key(priv, key);
2602                 else
2603                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
2604
2605                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2606                 break;
2607         default:
2608                 ret = -EINVAL;
2609         }
2610
2611         IWL_DEBUG_MAC80211(priv, "leave\n");
2612
2613         return ret;
2614 }
2615
2616 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2617                              enum ieee80211_ampdu_mlme_action action,
2618                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2619 {
2620         struct iwl_priv *priv = hw->priv;
2621         int ret;
2622
2623         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2624                      sta->addr, tid);
2625
2626         if (!(priv->cfg->sku & IWL_SKU_N))
2627                 return -EACCES;
2628
2629         switch (action) {
2630         case IEEE80211_AMPDU_RX_START:
2631                 IWL_DEBUG_HT(priv, "start Rx\n");
2632                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2633         case IEEE80211_AMPDU_RX_STOP:
2634                 IWL_DEBUG_HT(priv, "stop Rx\n");
2635                 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2636                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2637                         return 0;
2638                 else
2639                         return ret;
2640         case IEEE80211_AMPDU_TX_START:
2641                 IWL_DEBUG_HT(priv, "start Tx\n");
2642                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2643         case IEEE80211_AMPDU_TX_STOP:
2644                 IWL_DEBUG_HT(priv, "stop Tx\n");
2645                 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2646                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2647                         return 0;
2648                 else
2649                         return ret;
2650         default:
2651                 IWL_DEBUG_HT(priv, "unknown\n");
2652                 return -EINVAL;
2653                 break;
2654         }
2655         return 0;
2656 }
2657
2658 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2659                              struct ieee80211_low_level_stats *stats)
2660 {
2661         struct iwl_priv *priv = hw->priv;
2662
2663         priv = hw->priv;
2664         IWL_DEBUG_MAC80211(priv, "enter\n");
2665         IWL_DEBUG_MAC80211(priv, "leave\n");
2666
2667         return 0;
2668 }
2669
2670 /*****************************************************************************
2671  *
2672  * sysfs attributes
2673  *
2674  *****************************************************************************/
2675
2676 #ifdef CONFIG_IWLWIFI_DEBUG
2677
2678 /*
2679  * The following adds a new attribute to the sysfs representation
2680  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2681  * used for controlling the debug level.
2682  *
2683  * See the level definitions in iwl for details.
2684  *
2685  * The debug_level being managed using sysfs below is a per device debug
2686  * level that is used instead of the global debug level if it (the per
2687  * device debug level) is set.
2688  */
2689 static ssize_t show_debug_level(struct device *d,
2690                                 struct device_attribute *attr, char *buf)
2691 {
2692         struct iwl_priv *priv = dev_get_drvdata(d);
2693         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
2694 }
2695 static ssize_t store_debug_level(struct device *d,
2696                                 struct device_attribute *attr,
2697                                  const char *buf, size_t count)
2698 {
2699         struct iwl_priv *priv = dev_get_drvdata(d);
2700         unsigned long val;
2701         int ret;
2702
2703         ret = strict_strtoul(buf, 0, &val);
2704         if (ret)
2705                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2706         else {
2707                 priv->debug_level = val;
2708                 if (iwl_alloc_traffic_mem(priv))
2709                         IWL_ERR(priv,
2710                                 "Not enough memory to generate traffic log\n");
2711         }
2712         return strnlen(buf, count);
2713 }
2714
2715 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2716                         show_debug_level, store_debug_level);
2717
2718
2719 #endif /* CONFIG_IWLWIFI_DEBUG */
2720
2721
2722 static ssize_t show_temperature(struct device *d,
2723                                 struct device_attribute *attr, char *buf)
2724 {
2725         struct iwl_priv *priv = dev_get_drvdata(d);
2726
2727         if (!iwl_is_alive(priv))
2728                 return -EAGAIN;
2729
2730         return sprintf(buf, "%d\n", priv->temperature);
2731 }
2732
2733 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2734
2735 static ssize_t show_tx_power(struct device *d,
2736                              struct device_attribute *attr, char *buf)
2737 {
2738         struct iwl_priv *priv = dev_get_drvdata(d);
2739
2740         if (!iwl_is_ready_rf(priv))
2741                 return sprintf(buf, "off\n");
2742         else
2743                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2744 }
2745
2746 static ssize_t store_tx_power(struct device *d,
2747                               struct device_attribute *attr,
2748                               const char *buf, size_t count)
2749 {
2750         struct iwl_priv *priv = dev_get_drvdata(d);
2751         unsigned long val;
2752         int ret;
2753
2754         ret = strict_strtoul(buf, 10, &val);
2755         if (ret)
2756                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2757         else {
2758                 ret = iwl_set_tx_power(priv, val, false);
2759                 if (ret)
2760                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
2761                                 ret);
2762                 else
2763                         ret = count;
2764         }
2765         return ret;
2766 }
2767
2768 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2769
2770 static ssize_t show_flags(struct device *d,
2771                           struct device_attribute *attr, char *buf)
2772 {
2773         struct iwl_priv *priv = dev_get_drvdata(d);
2774
2775         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2776 }
2777
2778 static ssize_t store_flags(struct device *d,
2779                            struct device_attribute *attr,
2780                            const char *buf, size_t count)
2781 {
2782         struct iwl_priv *priv = dev_get_drvdata(d);
2783         unsigned long val;
2784         u32 flags;
2785         int ret = strict_strtoul(buf, 0, &val);
2786         if (ret)
2787                 return ret;
2788         flags = (u32)val;
2789
2790         mutex_lock(&priv->mutex);
2791         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
2792                 /* Cancel any currently running scans... */
2793                 if (iwl_scan_cancel_timeout(priv, 100))
2794                         IWL_WARN(priv, "Could not cancel scan.\n");
2795                 else {
2796                         IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
2797                         priv->staging_rxon.flags = cpu_to_le32(flags);
2798                         iwlcore_commit_rxon(priv);
2799                 }
2800         }
2801         mutex_unlock(&priv->mutex);
2802
2803         return count;
2804 }
2805
2806 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
2807
2808 static ssize_t show_filter_flags(struct device *d,
2809                                  struct device_attribute *attr, char *buf)
2810 {
2811         struct iwl_priv *priv = dev_get_drvdata(d);
2812
2813         return sprintf(buf, "0x%04X\n",
2814                 le32_to_cpu(priv->active_rxon.filter_flags));
2815 }
2816
2817 static ssize_t store_filter_flags(struct device *d,
2818                                   struct device_attribute *attr,
2819                                   const char *buf, size_t count)
2820 {
2821         struct iwl_priv *priv = dev_get_drvdata(d);
2822         unsigned long val;
2823         u32 filter_flags;
2824         int ret = strict_strtoul(buf, 0, &val);
2825         if (ret)
2826                 return ret;
2827         filter_flags = (u32)val;
2828
2829         mutex_lock(&priv->mutex);
2830         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
2831                 /* Cancel any currently running scans... */
2832                 if (iwl_scan_cancel_timeout(priv, 100))
2833                         IWL_WARN(priv, "Could not cancel scan.\n");
2834                 else {
2835                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
2836                                        "0x%04X\n", filter_flags);
2837                         priv->staging_rxon.filter_flags =
2838                                 cpu_to_le32(filter_flags);
2839                         iwlcore_commit_rxon(priv);
2840                 }
2841         }
2842         mutex_unlock(&priv->mutex);
2843
2844         return count;
2845 }
2846
2847 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
2848                    store_filter_flags);
2849
2850
2851 static ssize_t show_statistics(struct device *d,
2852                                struct device_attribute *attr, char *buf)
2853 {
2854         struct iwl_priv *priv = dev_get_drvdata(d);
2855         u32 size = sizeof(struct iwl_notif_statistics);
2856         u32 len = 0, ofs = 0;
2857         u8 *data = (u8 *)&priv->statistics;
2858         int rc = 0;
2859
2860         if (!iwl_is_alive(priv))
2861                 return -EAGAIN;
2862
2863         mutex_lock(&priv->mutex);
2864         rc = iwl_send_statistics_request(priv, 0);
2865         mutex_unlock(&priv->mutex);
2866
2867         if (rc) {
2868                 len = sprintf(buf,
2869                               "Error sending statistics request: 0x%08X\n", rc);
2870                 return len;
2871         }
2872
2873         while (size && (PAGE_SIZE - len)) {
2874                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
2875                                    PAGE_SIZE - len, 1);
2876                 len = strlen(buf);
2877                 if (PAGE_SIZE - len)
2878                         buf[len++] = '\n';
2879
2880                 ofs += 16;
2881                 size -= min(size, 16U);
2882         }
2883
2884         return len;
2885 }
2886
2887 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
2888
2889 static ssize_t show_rts_ht_protection(struct device *d,
2890                              struct device_attribute *attr, char *buf)
2891 {
2892         struct iwl_priv *priv = dev_get_drvdata(d);
2893
2894         return sprintf(buf, "%s\n",
2895                 priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
2896 }
2897
2898 static ssize_t store_rts_ht_protection(struct device *d,
2899                               struct device_attribute *attr,
2900                               const char *buf, size_t count)
2901 {
2902         struct iwl_priv *priv = dev_get_drvdata(d);
2903         unsigned long val;
2904         int ret;
2905
2906         ret = strict_strtoul(buf, 10, &val);
2907         if (ret)
2908                 IWL_INFO(priv, "Input is not in decimal form.\n");
2909         else {
2910                 if (!iwl_is_associated(priv))
2911                         priv->cfg->use_rts_for_ht = val ? true : false;
2912                 else
2913                         IWL_ERR(priv, "Sta associated with AP - "
2914                                 "Change protection mechanism is not allowed\n");
2915                 ret = count;
2916         }
2917         return ret;
2918 }
2919
2920 static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
2921                         show_rts_ht_protection, store_rts_ht_protection);
2922
2923
2924 /*****************************************************************************
2925  *
2926  * driver setup and teardown
2927  *
2928  *****************************************************************************/
2929
2930 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2931 {
2932         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2933
2934         init_waitqueue_head(&priv->wait_command_queue);
2935
2936         INIT_WORK(&priv->up, iwl_bg_up);
2937         INIT_WORK(&priv->restart, iwl_bg_restart);
2938         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
2939         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2940         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2941         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
2942         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
2943
2944         iwl_setup_scan_deferred_work(priv);
2945
2946         if (priv->cfg->ops->lib->setup_deferred_work)
2947                 priv->cfg->ops->lib->setup_deferred_work(priv);
2948
2949         init_timer(&priv->statistics_periodic);
2950         priv->statistics_periodic.data = (unsigned long)priv;
2951         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2952
2953         if (!priv->cfg->use_isr_legacy)
2954                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2955                         iwl_irq_tasklet, (unsigned long)priv);
2956         else
2957                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2958                         iwl_irq_tasklet_legacy, (unsigned long)priv);
2959 }
2960
2961 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2962 {
2963         if (priv->cfg->ops->lib->cancel_deferred_work)
2964                 priv->cfg->ops->lib->cancel_deferred_work(priv);
2965
2966         cancel_delayed_work_sync(&priv->init_alive_start);
2967         cancel_delayed_work(&priv->scan_check);
2968         cancel_delayed_work(&priv->alive_start);
2969         cancel_work_sync(&priv->beacon_update);
2970         del_timer_sync(&priv->statistics_periodic);
2971 }
2972
2973 static void iwl_init_hw_rates(struct iwl_priv *priv,
2974                               struct ieee80211_rate *rates)
2975 {
2976         int i;
2977
2978         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
2979                 rates[i].bitrate = iwl_rates[i].ieee * 5;
2980                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2981                 rates[i].hw_value_short = i;
2982                 rates[i].flags = 0;
2983                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
2984                         /*
2985                          * If CCK != 1M then set short preamble rate flag.
2986                          */
2987                         rates[i].flags |=
2988                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
2989                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
2990                 }
2991         }
2992 }
2993
2994 static int iwl_init_drv(struct iwl_priv *priv)
2995 {
2996         int ret;
2997
2998         priv->ibss_beacon = NULL;
2999
3000         spin_lock_init(&priv->lock);
3001         spin_lock_init(&priv->sta_lock);
3002         spin_lock_init(&priv->hcmd_lock);
3003
3004         INIT_LIST_HEAD(&priv->free_frames);
3005
3006         mutex_init(&priv->mutex);
3007
3008         /* Clear the driver's (not device's) station table */
3009         iwl_clear_stations_table(priv);
3010
3011         priv->ieee_channels = NULL;
3012         priv->ieee_rates = NULL;
3013         priv->band = IEEE80211_BAND_2GHZ;
3014
3015         priv->iw_mode = NL80211_IFTYPE_STATION;
3016         if (priv->cfg->support_sm_ps)
3017                 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DYNAMIC;
3018         else
3019                 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
3020
3021         /* Choose which receivers/antennas to use */
3022         if (priv->cfg->ops->hcmd->set_rxon_chain)
3023                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
3024
3025         iwl_init_scan_params(priv);
3026
3027         iwl_reset_qos(priv);
3028
3029         priv->qos_data.qos_active = 0;
3030         priv->qos_data.qos_cap.val = 0;
3031
3032         priv->rates_mask = IWL_RATES_MASK;
3033         /* Set the tx_power_user_lmt to the lowest power level
3034          * this value will get overwritten by channel max power avg
3035          * from eeprom */
3036         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
3037
3038         ret = iwl_init_channel_map(priv);
3039         if (ret) {
3040                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3041                 goto err;
3042         }
3043
3044         ret = iwlcore_init_geos(priv);
3045         if (ret) {
3046                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3047                 goto err_free_channel_map;
3048         }
3049         iwl_init_hw_rates(priv, priv->ieee_rates);
3050
3051         return 0;
3052
3053 err_free_channel_map:
3054         iwl_free_channel_map(priv);
3055 err:
3056         return ret;
3057 }
3058
3059 static void iwl_uninit_drv(struct iwl_priv *priv)
3060 {
3061         iwl_calib_free_results(priv);
3062         iwlcore_free_geos(priv);
3063         iwl_free_channel_map(priv);
3064         kfree(priv->scan);
3065 }
3066
3067 static struct attribute *iwl_sysfs_entries[] = {
3068         &dev_attr_flags.attr,
3069         &dev_attr_filter_flags.attr,
3070         &dev_attr_statistics.attr,
3071         &dev_attr_temperature.attr,
3072         &dev_attr_tx_power.attr,
3073         &dev_attr_rts_ht_protection.attr,
3074 #ifdef CONFIG_IWLWIFI_DEBUG
3075         &dev_attr_debug_level.attr,
3076 #endif
3077         NULL
3078 };
3079
3080 static struct attribute_group iwl_attribute_group = {
3081         .name = NULL,           /* put in device directory */
3082         .attrs = iwl_sysfs_entries,
3083 };
3084
3085 static struct ieee80211_ops iwl_hw_ops = {
3086         .tx = iwl_mac_tx,
3087         .start = iwl_mac_start,
3088         .stop = iwl_mac_stop,
3089         .add_interface = iwl_mac_add_interface,
3090         .remove_interface = iwl_mac_remove_interface,
3091         .config = iwl_mac_config,
3092         .configure_filter = iwl_configure_filter,
3093         .set_key = iwl_mac_set_key,
3094         .update_tkip_key = iwl_mac_update_tkip_key,
3095         .get_stats = iwl_mac_get_stats,
3096         .get_tx_stats = iwl_mac_get_tx_stats,
3097         .conf_tx = iwl_mac_conf_tx,
3098         .reset_tsf = iwl_mac_reset_tsf,
3099         .bss_info_changed = iwl_bss_info_changed,
3100         .ampdu_action = iwl_mac_ampdu_action,
3101         .hw_scan = iwl_mac_hw_scan
3102 };
3103
3104 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3105 {
3106         int err = 0;
3107         struct iwl_priv *priv;
3108         struct ieee80211_hw *hw;
3109         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3110         unsigned long flags;
3111         u16 pci_cmd;
3112
3113         /************************
3114          * 1. Allocating HW data
3115          ************************/
3116
3117         /* Disabling hardware scan means that mac80211 will perform scans
3118          * "the hard way", rather than using device's scan. */
3119         if (cfg->mod_params->disable_hw_scan) {
3120                 if (iwl_debug_level & IWL_DL_INFO)
3121                         dev_printk(KERN_DEBUG, &(pdev->dev),
3122                                    "Disabling hw_scan\n");
3123                 iwl_hw_ops.hw_scan = NULL;
3124         }
3125
3126         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3127         if (!hw) {
3128                 err = -ENOMEM;
3129                 goto out;
3130         }
3131         priv = hw->priv;
3132         /* At this point both hw and priv are allocated. */
3133
3134         SET_IEEE80211_DEV(hw, &pdev->dev);
3135
3136         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3137         priv->cfg = cfg;
3138         priv->pci_dev = pdev;
3139         priv->inta_mask = CSR_INI_SET_MASK;
3140
3141 #ifdef CONFIG_IWLWIFI_DEBUG
3142         atomic_set(&priv->restrict_refcnt, 0);
3143 #endif
3144         if (iwl_alloc_traffic_mem(priv))
3145                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3146
3147         /**************************
3148          * 2. Initializing PCI bus
3149          **************************/
3150         if (pci_enable_device(pdev)) {
3151                 err = -ENODEV;
3152                 goto out_ieee80211_free_hw;
3153         }
3154
3155         pci_set_master(pdev);
3156
3157         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3158         if (!err)
3159                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3160         if (err) {
3161                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3162                 if (!err)
3163                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3164                 /* both attempts failed: */
3165                 if (err) {
3166                         IWL_WARN(priv, "No suitable DMA available.\n");
3167                         goto out_pci_disable_device;
3168                 }
3169         }
3170
3171         err = pci_request_regions(pdev, DRV_NAME);
3172         if (err)
3173                 goto out_pci_disable_device;
3174
3175         pci_set_drvdata(pdev, priv);
3176
3177
3178         /***********************
3179          * 3. Read REV register
3180          ***********************/
3181         priv->hw_base = pci_iomap(pdev, 0, 0);
3182         if (!priv->hw_base) {
3183                 err = -ENODEV;
3184                 goto out_pci_release_regions;
3185         }
3186
3187         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3188                 (unsigned long long) pci_resource_len(pdev, 0));
3189         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3190
3191         /* this spin lock will be used in apm_ops.init and EEPROM access
3192          * we should init now
3193          */
3194         spin_lock_init(&priv->reg_lock);
3195         iwl_hw_detect(priv);
3196         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3197                 priv->cfg->name, priv->hw_rev);
3198
3199         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3200          * PCI Tx retries from interfering with C3 CPU state */
3201         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3202
3203         iwl_prepare_card_hw(priv);
3204         if (!priv->hw_ready) {
3205                 IWL_WARN(priv, "Failed, HW not ready\n");
3206                 goto out_iounmap;
3207         }
3208
3209         /*****************
3210          * 4. Read EEPROM
3211          *****************/
3212         /* Read the EEPROM */
3213         err = iwl_eeprom_init(priv);
3214         if (err) {
3215                 IWL_ERR(priv, "Unable to init EEPROM\n");
3216                 goto out_iounmap;
3217         }
3218         err = iwl_eeprom_check_version(priv);
3219         if (err)
3220                 goto out_free_eeprom;
3221
3222         /* extract MAC Address */
3223         iwl_eeprom_get_mac(priv, priv->mac_addr);
3224         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3225         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3226
3227         /************************
3228          * 5. Setup HW constants
3229          ************************/
3230         if (iwl_set_hw_params(priv)) {
3231                 IWL_ERR(priv, "failed to set hw parameters\n");
3232                 goto out_free_eeprom;
3233         }
3234
3235         /*******************
3236          * 6. Setup priv
3237          *******************/
3238
3239         err = iwl_init_drv(priv);
3240         if (err)
3241                 goto out_free_eeprom;
3242         /* At this point both hw and priv are initialized. */
3243
3244         /********************
3245          * 7. Setup services
3246          ********************/
3247         spin_lock_irqsave(&priv->lock, flags);
3248         iwl_disable_interrupts(priv);
3249         spin_unlock_irqrestore(&priv->lock, flags);
3250
3251         pci_enable_msi(priv->pci_dev);
3252
3253         iwl_alloc_isr_ict(priv);
3254         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
3255                           IRQF_SHARED, DRV_NAME, priv);
3256         if (err) {
3257                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3258                 goto out_disable_msi;
3259         }
3260         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3261         if (err) {
3262                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3263                 goto out_free_irq;
3264         }
3265
3266         iwl_setup_deferred_work(priv);
3267         iwl_setup_rx_handlers(priv);
3268
3269         /**********************************
3270          * 8. Setup and register mac80211
3271          **********************************/
3272
3273         /* enable interrupts if needed: hw bug w/a */
3274         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3275         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3276                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3277                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3278         }
3279
3280         iwl_enable_interrupts(priv);
3281
3282         err = iwl_setup_mac(priv);
3283         if (err)
3284                 goto out_remove_sysfs;
3285
3286         err = iwl_dbgfs_register(priv, DRV_NAME);
3287         if (err)
3288                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
3289
3290         /* If platform's RF_KILL switch is NOT set to KILL */
3291         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3292                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3293         else
3294                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3295
3296         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3297                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3298
3299         iwl_power_initialize(priv);
3300         iwl_tt_initialize(priv);
3301         return 0;
3302
3303  out_remove_sysfs:
3304         destroy_workqueue(priv->workqueue);
3305         priv->workqueue = NULL;
3306         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3307  out_free_irq:
3308         free_irq(priv->pci_dev->irq, priv);
3309         iwl_free_isr_ict(priv);
3310  out_disable_msi:
3311         pci_disable_msi(priv->pci_dev);
3312         iwl_uninit_drv(priv);
3313  out_free_eeprom:
3314         iwl_eeprom_free(priv);
3315  out_iounmap:
3316         pci_iounmap(pdev, priv->hw_base);
3317  out_pci_release_regions:
3318         pci_set_drvdata(pdev, NULL);
3319         pci_release_regions(pdev);
3320  out_pci_disable_device:
3321         pci_disable_device(pdev);
3322  out_ieee80211_free_hw:
3323         iwl_free_traffic_mem(priv);
3324         ieee80211_free_hw(priv->hw);
3325  out:
3326         return err;
3327 }
3328
3329 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3330 {
3331         struct iwl_priv *priv = pci_get_drvdata(pdev);
3332         unsigned long flags;
3333
3334         if (!priv)
3335                 return;
3336
3337         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3338
3339         iwl_dbgfs_unregister(priv);
3340         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3341
3342         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3343          * to be called and iwl_down since we are removing the device
3344          * we need to set STATUS_EXIT_PENDING bit.
3345          */
3346         set_bit(STATUS_EXIT_PENDING, &priv->status);
3347         if (priv->mac80211_registered) {
3348                 ieee80211_unregister_hw(priv->hw);
3349                 priv->mac80211_registered = 0;
3350         } else {
3351                 iwl_down(priv);
3352         }
3353
3354         /*
3355          * Make sure device is reset to low power before unloading driver.
3356          * This may be redundant with iwl_down(), but there are paths to
3357          * run iwl_down() without calling apm_ops.stop(), and there are
3358          * paths to avoid running iwl_down() at all before leaving driver.
3359          * This (inexpensive) call *makes sure* device is reset.
3360          */
3361         priv->cfg->ops->lib->apm_ops.stop(priv);
3362
3363         iwl_tt_exit(priv);
3364
3365         /* make sure we flush any pending irq or
3366          * tasklet for the driver
3367          */
3368         spin_lock_irqsave(&priv->lock, flags);
3369         iwl_disable_interrupts(priv);
3370         spin_unlock_irqrestore(&priv->lock, flags);
3371
3372         iwl_synchronize_irq(priv);
3373
3374         iwl_dealloc_ucode_pci(priv);
3375
3376         if (priv->rxq.bd)
3377                 iwl_rx_queue_free(priv, &priv->rxq);
3378         iwl_hw_txq_ctx_free(priv);
3379
3380         iwl_clear_stations_table(priv);
3381         iwl_eeprom_free(priv);
3382
3383
3384         /*netif_stop_queue(dev); */
3385         flush_workqueue(priv->workqueue);
3386
3387         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3388          * priv->workqueue... so we can't take down the workqueue
3389          * until now... */
3390         destroy_workqueue(priv->workqueue);
3391         priv->workqueue = NULL;
3392         iwl_free_traffic_mem(priv);
3393
3394         free_irq(priv->pci_dev->irq, priv);
3395         pci_disable_msi(priv->pci_dev);
3396         pci_iounmap(pdev, priv->hw_base);
3397         pci_release_regions(pdev);
3398         pci_disable_device(pdev);
3399         pci_set_drvdata(pdev, NULL);
3400
3401         iwl_uninit_drv(priv);
3402
3403         iwl_free_isr_ict(priv);
3404
3405         if (priv->ibss_beacon)
3406                 dev_kfree_skb(priv->ibss_beacon);
3407
3408         ieee80211_free_hw(priv->hw);
3409 }
3410
3411
3412 /*****************************************************************************
3413  *
3414  * driver and module entry point
3415  *
3416  *****************************************************************************/
3417
3418 /* Hardware specific file defines the PCI IDs table for that hardware module */
3419 static struct pci_device_id iwl_hw_card_ids[] = {
3420 #ifdef CONFIG_IWL4965
3421         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3422         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3423 #endif /* CONFIG_IWL4965 */
3424 #ifdef CONFIG_IWL5000
3425         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
3426         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
3427         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
3428         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
3429         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
3430         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
3431         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
3432         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
3433         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
3434         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
3435 /* 5350 WiFi/WiMax */
3436         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
3437         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
3438         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
3439 /* 5150 Wifi/WiMax */
3440         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
3441         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
3442
3443 /* 6x00 Series */
3444         {IWL_PCI_DEVICE(0x008D, 0x1301, iwl6000h_2agn_cfg)},
3445         {IWL_PCI_DEVICE(0x008D, 0x1321, iwl6000h_2agn_cfg)},
3446         {IWL_PCI_DEVICE(0x008D, 0x1326, iwl6000h_2abg_cfg)},
3447         {IWL_PCI_DEVICE(0x008D, 0x1306, iwl6000h_2abg_cfg)},
3448         {IWL_PCI_DEVICE(0x008D, 0x1307, iwl6000h_2bg_cfg)},
3449         {IWL_PCI_DEVICE(0x008E, 0x1311, iwl6000h_2agn_cfg)},
3450         {IWL_PCI_DEVICE(0x008E, 0x1316, iwl6000h_2abg_cfg)},
3451
3452         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3453         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3454         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3455         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3456         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3457         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3458         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3459         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3460         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3461         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3462
3463 /* 6x50 WiFi/WiMax Series */
3464         {IWL_PCI_DEVICE(0x0086, 0x1101, iwl6050_3agn_cfg)},
3465         {IWL_PCI_DEVICE(0x0086, 0x1121, iwl6050_3agn_cfg)},
3466         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3467         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3468         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3469         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3470         {IWL_PCI_DEVICE(0x0088, 0x1111, iwl6050_3agn_cfg)},
3471         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3472         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3473
3474 /* 1000 Series WiFi */
3475         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3476         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3477         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3478         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3479         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3480         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3481         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
3482         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
3483         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
3484         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
3485         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
3486         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
3487 #endif /* CONFIG_IWL5000 */
3488
3489         {0}
3490 };
3491 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3492
3493 static struct pci_driver iwl_driver = {
3494         .name = DRV_NAME,
3495         .id_table = iwl_hw_card_ids,
3496         .probe = iwl_pci_probe,
3497         .remove = __devexit_p(iwl_pci_remove),
3498 #ifdef CONFIG_PM
3499         .suspend = iwl_pci_suspend,
3500         .resume = iwl_pci_resume,
3501 #endif
3502 };
3503
3504 static int __init iwl_init(void)
3505 {
3506
3507         int ret;
3508         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3509         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3510
3511         ret = iwlagn_rate_control_register();
3512         if (ret) {
3513                 printk(KERN_ERR DRV_NAME
3514                        "Unable to register rate control algorithm: %d\n", ret);
3515                 return ret;
3516         }
3517
3518         ret = pci_register_driver(&iwl_driver);
3519         if (ret) {
3520                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3521                 goto error_register;
3522         }
3523
3524         return ret;
3525
3526 error_register:
3527         iwlagn_rate_control_unregister();
3528         return ret;
3529 }
3530
3531 static void __exit iwl_exit(void)
3532 {
3533         pci_unregister_driver(&iwl_driver);
3534         iwlagn_rate_control_unregister();
3535 }
3536
3537 module_exit(iwl_exit);
3538 module_init(iwl_init);
3539
3540 #ifdef CONFIG_IWLWIFI_DEBUG
3541 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
3542 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
3543 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3544 MODULE_PARM_DESC(debug, "debug output mask");
3545 #endif
3546