drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/pci.h>
  36 #include <linux/pci-aspm.h>
  37 #include <linux/slab.h>
  38 #include <linux/dma-mapping.h>
  39 #include <linux/delay.h>
  40 #include <linux/sched.h>
  41 #include <linux/skbuff.h>
  42 #include <linux/netdevice.h>
  43 #include <linux/wireless.h>
  44 #include <linux/firmware.h>
  45 #include <linux/etherdevice.h>
  46 #include <linux/if_arp.h>
  47
  48 #include <net/mac80211.h>
  49
  50 #include <asm/div64.h>
  51
  52 #define DRV_NAME        "iwlagn"
  53
  54 #include "iwl-eeprom.h"
  55 #include "iwl-dev.h"
  56 #include "iwl-core.h"
  57 #include "iwl-io.h"
  58 #include "iwl-helpers.h"
  59 #include "iwl-sta.h"
  60 #include "iwl-agn-calib.h"
  61 #include "iwl-agn.h"
  62
  63
  64 /******************************************************************************
  65  *
  66  * module boiler plate
  67  *
  68  ******************************************************************************/
  69
  70 /*
  71  * module name, copyright, version, etc.
  72  */
  73 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  74
  75 #ifdef CONFIG_IWLWIFI_DEBUG
  76 #define VD "d"
  77 #else
  78 #define VD
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD
  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 static int iwlagn_ant_coupling;
  91 static bool iwlagn_bt_ch_announce = 1;
  92
  93 /**
  94  * iwlagn_commit_rxon - commit staging_rxon to hardware
  95  *
  96  * The RXON command in staging_rxon is committed to the hardware and
  97  * the active_rxon structure is updated with the new data.  This
  98  * function correctly transitions out of the RXON_ASSOC_MSK state if
  99  * a HW tune is required based on the RXON structure changes.
 100  */
 101 int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 102 {
 103         /* cast away the const for active_rxon in this function */
 104         struct iwl_rxon_cmd *active_rxon = (void *)&ctx->active;
 105         int ret;
 106         bool new_assoc =
 107                 !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
 108         bool old_assoc = !!(ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK);
 109
 110         if (!iwl_is_alive(priv))
 111                 return -EBUSY;
 112
 113         if (!ctx->is_active)
 114                 return 0;
 115
 116         /* always get timestamp with Rx frame */
 117         ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
 118
 119         ret = iwl_check_rxon_cmd(priv, ctx);
 120         if (ret) {
 121                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 122                 return -EINVAL;
 123         }
 124
 125         /*
 126          * receive commit_rxon request
 127          * abort any previous channel switch if still in process
 128          */
 129         if (priv->switch_rxon.switch_in_progress &&
 130             (priv->switch_rxon.channel != ctx->staging.channel)) {
 131                 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
 132                       le16_to_cpu(priv->switch_rxon.channel));
 133                 iwl_chswitch_done(priv, false);
 134         }
 135
 136         /* If we don't need to send a full RXON, we can use
 137          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 138          * and other flags for the current radio configuration. */
 139         if (!iwl_full_rxon_required(priv, ctx)) {
 140                 ret = iwl_send_rxon_assoc(priv, ctx);
 141                 if (ret) {
 142                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 143                         return ret;
 144                 }
 145
 146                 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
 147                 iwl_print_rx_config_cmd(priv, ctx);
 148                 return 0;
 149         }
 150
 151         /* If we are currently associated and the new config requires
 152          * an RXON_ASSOC and the new config wants the associated mask enabled,
 153          * we must clear the associated from the active configuration
 154          * before we apply the new config */
 155         if (iwl_is_associated_ctx(ctx) && new_assoc) {
 156                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 157                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 158
 159                 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
 160                                        sizeof(struct iwl_rxon_cmd),
 161                                        active_rxon);
 162
 163                 /* If the mask clearing failed then we set
 164                  * active_rxon back to what it was previously */
 165                 if (ret) {
 166                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 167                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 168                         return ret;
 169                 }
 170                 iwl_clear_ucode_stations(priv, ctx);
 171                 iwl_restore_stations(priv, ctx);
 172                 ret = iwl_restore_default_wep_keys(priv, ctx);
 173                 if (ret) {
 174                         IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
 175                         return ret;
 176                 }
 177         }
 178
 179         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 180                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 181                        "* channel = %d\n"
 182                        "* bssid = %pM\n",
 183                        (new_assoc ? "" : "out"),
 184                        le16_to_cpu(ctx->staging.channel),
 185                        ctx->staging.bssid_addr);
 186
 187         iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto);
 188
 189         if (!old_assoc) {
 190                 /*
 191                  * First of all, before setting associated, we need to
 192                  * send RXON timing so the device knows about the DTIM
 193                  * period and other timing values
 194                  */
 195                 ret = iwl_send_rxon_timing(priv, ctx);
 196                 if (ret) {
 197                         IWL_ERR(priv, "Error setting RXON timing!\n");
 198                         return ret;
 199                 }
 200         }
 201
 202         if (priv->cfg->ops->hcmd->set_pan_params) {
 203                 ret = priv->cfg->ops->hcmd->set_pan_params(priv);
 204                 if (ret)
 205                         return ret;
 206         }
 207
 208         /* Apply the new configuration
 209          * RXON unassoc clears the station table in uCode so restoration of
 210          * stations is needed after it (the RXON command) completes
 211          */
 212         if (!new_assoc) {
 213                 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
 214                               sizeof(struct iwl_rxon_cmd), &ctx->staging);
 215                 if (ret) {
 216                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 217                         return ret;
 218                 }
 219                 IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON.\n");
 220                 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
 221                 iwl_clear_ucode_stations(priv, ctx);
 222                 iwl_restore_stations(priv, ctx);
 223                 ret = iwl_restore_default_wep_keys(priv, ctx);
 224                 if (ret) {
 225                         IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
 226                         return ret;
 227                 }
 228         }
 229         if (new_assoc) {
 230                 priv->start_calib = 0;
 231                 /* Apply the new configuration
 232                  * RXON assoc doesn't clear the station table in uCode,
 233                  */
 234                 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
 235                               sizeof(struct iwl_rxon_cmd), &ctx->staging);
 236                 if (ret) {
 237                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 238                         return ret;
 239                 }
 240                 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
 241         }
 242         iwl_print_rx_config_cmd(priv, ctx);
 243
 244         iwl_init_sensitivity(priv);
 245
 246         /* If we issue a new RXON command which required a tune then we must
 247          * send a new TXPOWER command or we won't be able to Tx any frames */
 248         ret = priv->cfg->ops->lib->send_tx_power(priv);
 249         if (ret)
 250                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 251         return ret;
 252 }
 253
 254 void iwl_update_chain_flags(struct iwl_priv *priv)
 255 {
 256         struct iwl_rxon_context *ctx;
 257
 258         if (priv->cfg->ops->hcmd->set_rxon_chain) {
 259                 for_each_context(priv, ctx) {
 260                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
 261                         iwlcore_commit_rxon(priv, ctx);
 262                 }
 263         }
 264 }
 265
 266 static void iwl_clear_free_frames(struct iwl_priv *priv)
 267 {
 268         struct list_head *element;
 269
 270         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 271                        priv->frames_count);
 272
 273         while (!list_empty(&priv->free_frames)) {
 274                 element = priv->free_frames.next;
 275                 list_del(element);
 276                 kfree(list_entry(element, struct iwl_frame, list));
 277                 priv->frames_count--;
 278         }
 279
 280         if (priv->frames_count) {
 281                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 282                             priv->frames_count);
 283                 priv->frames_count = 0;
 284         }
 285 }
 286
 287 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 288 {
 289         struct iwl_frame *frame;
 290         struct list_head *element;
 291         if (list_empty(&priv->free_frames)) {
 292                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 293                 if (!frame) {
 294                         IWL_ERR(priv, "Could not allocate frame!\n");
 295                         return NULL;
 296                 }
 297
 298                 priv->frames_count++;
 299                 return frame;
 300         }
 301
 302         element = priv->free_frames.next;
 303         list_del(element);
 304         return list_entry(element, struct iwl_frame, list);
 305 }
 306
 307 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 308 {
 309         memset(frame, 0, sizeof(*frame));
 310         list_add(&frame->list, &priv->free_frames);
 311 }
 312
 313 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
 314                                  struct ieee80211_hdr *hdr,
 315                                  int left)
 316 {
 317         lockdep_assert_held(&priv->mutex);
 318
 319         if (!priv->beacon_skb)
 320                 return 0;
 321
 322         if (priv->beacon_skb->len > left)
 323                 return 0;
 324
 325         memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len);
 326
 327         return priv->beacon_skb->len;
 328 }
 329
 330 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 331 static void iwl_set_beacon_tim(struct iwl_priv *priv,
 332                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 333                                u8 *beacon, u32 frame_size)
 334 {
 335         u16 tim_idx;
 336         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 337
 338         /*
 339          * The index is relative to frame start but we start looking at the
 340          * variable-length part of the beacon.
 341          */
 342         tim_idx = mgmt->u.beacon.variable - beacon;
 343
 344         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 345         while ((tim_idx < (frame_size - 2)) &&
 346                         (beacon[tim_idx] != WLAN_EID_TIM))
 347                 tim_idx += beacon[tim_idx+1] + 2;
 348
 349         /* If TIM field was found, set variables */
 350         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 351                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 352                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 353         } else
 354                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 355 }
 356
 357 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 358                                        struct iwl_frame *frame)
 359 {
 360         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 361         u32 frame_size;
 362         u32 rate_flags;
 363         u32 rate;
 364         /*
 365          * We have to set up the TX command, the TX Beacon command, and the
 366          * beacon contents.
 367          */
 368
 369         lockdep_assert_held(&priv->mutex);
 370
 371         if (!priv->beacon_ctx) {
 372                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 373                 return 0;
 374         }
 375
 376         /* Initialize memory */
 377         tx_beacon_cmd = &frame->u.beacon;
 378         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 379
 380         /* Set up TX beacon contents */
 381         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 382                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 383         if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
 384                 return 0;
 385         if (!frame_size)
 386                 return 0;
 387
 388         /* Set up TX command fields */
 389         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 390         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 391         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 392         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 393                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 394
 395         /* Set up TX beacon command fields */
 396         iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
 397                            frame_size);
 398
 399         /* Set up packet rate and flags */
 400         rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
 401         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 402                                               priv->hw_params.valid_tx_ant);
 403         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 404         if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
 405                 rate_flags |= RATE_MCS_CCK_MSK;
 406         tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
 407                         rate_flags);
 408
 409         return sizeof(*tx_beacon_cmd) + frame_size;
 410 }
 411 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 412 {
 413         struct iwl_frame *frame;
 414         unsigned int frame_size;
 415         int rc;
 416
 417         frame = iwl_get_free_frame(priv);
 418         if (!frame) {
 419                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 420                           "command.\n");
 421                 return -ENOMEM;
 422         }
 423
 424         frame_size = iwl_hw_get_beacon_cmd(priv, frame);
 425         if (!frame_size) {
 426                 IWL_ERR(priv, "Error configuring the beacon command\n");
 427                 iwl_free_frame(priv, frame);
 428                 return -EINVAL;
 429         }
 430
 431         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 432                               &frame->u.cmd[0]);
 433
 434         iwl_free_frame(priv, frame);
 435
 436         return rc;
 437 }
 438
 439 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 440 {
 441         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 442
 443         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 444         if (sizeof(dma_addr_t) > sizeof(u32))
 445                 addr |=
 446                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 447
 448         return addr;
 449 }
 450
 451 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 452 {
 453         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 454
 455         return le16_to_cpu(tb->hi_n_len) >> 4;
 456 }
 457
 458 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 459                                   dma_addr_t addr, u16 len)
 460 {
 461         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 462         u16 hi_n_len = len << 4;
 463
 464         put_unaligned_le32(addr, &tb->lo);
 465         if (sizeof(dma_addr_t) > sizeof(u32))
 466                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 467
 468         tb->hi_n_len = cpu_to_le16(hi_n_len);
 469
 470         tfd->num_tbs = idx + 1;
 471 }
 472
 473 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 474 {
 475         return tfd->num_tbs & 0x1f;
 476 }
 477
 478 /**
 479  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 480  * @priv - driver private data
 481  * @txq - tx queue
 482  *
 483  * Does NOT advance any TFD circular buffer read/write indexes
 484  * Does NOT free the TFD itself (which is within circular buffer)
 485  */
 486 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 487 {
 488         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 489         struct iwl_tfd *tfd;
 490         struct pci_dev *dev = priv->pci_dev;
 491         int index = txq->q.read_ptr;
 492         int i;
 493         int num_tbs;
 494
 495         tfd = &tfd_tmp[index];
 496
 497         /* Sanity check on number of chunks */
 498         num_tbs = iwl_tfd_get_num_tbs(tfd);
 499
 500         if (num_tbs >= IWL_NUM_OF_TBS) {
 501                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 502                 /* @todo issue fatal error, it is quite serious situation */
 503                 return;
 504         }
 505
 506         /* Unmap tx_cmd */
 507         if (num_tbs)
 508                 pci_unmap_single(dev,
 509                                 dma_unmap_addr(&txq->meta[index], mapping),
 510                                 dma_unmap_len(&txq->meta[index], len),
 511                                 PCI_DMA_BIDIRECTIONAL);
 512
 513         /* Unmap chunks, if any. */
 514         for (i = 1; i < num_tbs; i++)
 515                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 516                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 517
 518         /* free SKB */
 519         if (txq->txb) {
 520                 struct sk_buff *skb;
 521
 522                 skb = txq->txb[txq->q.read_ptr].skb;
 523
 524                 /* can be called from irqs-disabled context */
 525                 if (skb) {
 526                         dev_kfree_skb_any(skb);
 527                         txq->txb[txq->q.read_ptr].skb = NULL;
 528                 }
 529         }
 530 }
 531
 532 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 533                                  struct iwl_tx_queue *txq,
 534                                  dma_addr_t addr, u16 len,
 535                                  u8 reset, u8 pad)
 536 {
 537         struct iwl_queue *q;
 538         struct iwl_tfd *tfd, *tfd_tmp;
 539         u32 num_tbs;
 540
 541         q = &txq->q;
 542         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 543         tfd = &tfd_tmp[q->write_ptr];
 544
 545         if (reset)
 546                 memset(tfd, 0, sizeof(*tfd));
 547
 548         num_tbs = iwl_tfd_get_num_tbs(tfd);
 549
 550         /* Each TFD can point to a maximum 20 Tx buffers */
 551         if (num_tbs >= IWL_NUM_OF_TBS) {
 552                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 553                           IWL_NUM_OF_TBS);
 554                 return -EINVAL;
 555         }
 556
 557         BUG_ON(addr & ~DMA_BIT_MASK(36));
 558         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 559                 IWL_ERR(priv, "Unaligned address = %llx\n",
 560                           (unsigned long long)addr);
 561
 562         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 563
 564         return 0;
 565 }
 566
 567 /*
 568  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 569  * given Tx queue, and enable the DMA channel used for that queue.
 570  *
 571  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 572  * channels supported in hardware.
 573  */
 574 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 575                          struct iwl_tx_queue *txq)
 576 {
 577         int txq_id = txq->q.id;
 578
 579         /* Circular buffer (TFD queue in DRAM) physical base address */
 580         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 581                              txq->q.dma_addr >> 8);
 582
 583         return 0;
 584 }
 585
 586 /******************************************************************************
 587  *
 588  * Generic RX handler implementations
 589  *
 590  ******************************************************************************/
 591 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 592                                 struct iwl_rx_mem_buffer *rxb)
 593 {
 594         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 595         struct iwl_alive_resp *palive;
 596         struct delayed_work *pwork;
 597
 598         palive = &pkt->u.alive_frame;
 599
 600         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 601                        "0x%01X 0x%01X\n",
 602                        palive->is_valid, palive->ver_type,
 603                        palive->ver_subtype);
 604
 605         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 606                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 607                 memcpy(&priv->card_alive_init,
 608                        &pkt->u.alive_frame,
 609                        sizeof(struct iwl_init_alive_resp));
 610                 pwork = &priv->init_alive_start;
 611         } else {
 612                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 613                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 614                        sizeof(struct iwl_alive_resp));
 615                 pwork = &priv->alive_start;
 616         }
 617
 618         /* We delay the ALIVE response by 5ms to
 619          * give the HW RF Kill time to activate... */
 620         if (palive->is_valid == UCODE_VALID_OK)
 621                 queue_delayed_work(priv->workqueue, pwork,
 622                                    msecs_to_jiffies(5));
 623         else
 624                 IWL_WARN(priv, "uCode did not respond OK.\n");
 625 }
 626
 627 static void iwl_bg_beacon_update(struct work_struct *work)
 628 {
 629         struct iwl_priv *priv =
 630                 container_of(work, struct iwl_priv, beacon_update);
 631         struct sk_buff *beacon;
 632
 633         mutex_lock(&priv->mutex);
 634         if (!priv->beacon_ctx) {
 635                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 636                 goto out;
 637         }
 638
 639         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 640                 /*
 641                  * The ucode will send beacon notifications even in
 642                  * IBSS mode, but we don't want to process them. But
 643                  * we need to defer the type check to here due to
 644                  * requiring locking around the beacon_ctx access.
 645                  */
 646                 goto out;
 647         }
 648
 649         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 650         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 651         if (!beacon) {
 652                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 653                 goto out;
 654         }
 655
 656         /* new beacon skb is allocated every time; dispose previous.*/
 657         dev_kfree_skb(priv->beacon_skb);
 658
 659         priv->beacon_skb = beacon;
 660
 661         iwl_send_beacon_cmd(priv);
 662  out:
 663         mutex_unlock(&priv->mutex);
 664 }
 665
 666 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 667 {
 668         struct iwl_priv *priv =
 669                 container_of(work, struct iwl_priv, bt_runtime_config);
 670
 671         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 672                 return;
 673
 674         /* dont send host command if rf-kill is on */
 675         if (!iwl_is_ready_rf(priv))
 676                 return;
 677         priv->cfg->ops->hcmd->send_bt_config(priv);
 678 }
 679
 680 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 681 {
 682         struct iwl_priv *priv =
 683                 container_of(work, struct iwl_priv, bt_full_concurrency);
 684         struct iwl_rxon_context *ctx;
 685
 686         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 687                 return;
 688
 689         /* dont send host command if rf-kill is on */
 690         if (!iwl_is_ready_rf(priv))
 691                 return;
 692
 693         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 694                        priv->bt_full_concurrent ?
 695                        "full concurrency" : "3-wire");
 696
 697         /*
 698          * LQ & RXON updated cmds must be sent before BT Config cmd
 699          * to avoid 3-wire collisions
 700          */
 701         mutex_lock(&priv->mutex);
 702         for_each_context(priv, ctx) {
 703                 if (priv->cfg->ops->hcmd->set_rxon_chain)
 704                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
 705                 iwlcore_commit_rxon(priv, ctx);
 706         }
 707         mutex_unlock(&priv->mutex);
 708
 709         priv->cfg->ops->hcmd->send_bt_config(priv);
 710 }
 711
 712 /**
 713  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 714  *
 715  * This callback is provided in order to send a statistics request.
 716  *
 717  * This timer function is continually reset to execute within
 718  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 719  * was received.  We need to ensure we receive the statistics in order
 720  * to update the temperature used for calibrating the TXPOWER.
 721  */
 722 static void iwl_bg_statistics_periodic(unsigned long data)
 723 {
 724         struct iwl_priv *priv = (struct iwl_priv *)data;
 725
 726         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 727                 return;
 728
 729         /* dont send host command if rf-kill is on */
 730         if (!iwl_is_ready_rf(priv))
 731                 return;
 732
 733         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 734 }
 735
 736
 737 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 738                                         u32 start_idx, u32 num_events,
 739                                         u32 mode)
 740 {
 741         u32 i;
 742         u32 ptr;        /* SRAM byte address of log data */
 743         u32 ev, time, data; /* event log data */
 744         unsigned long reg_flags;
 745
 746         if (mode == 0)
 747                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 748         else
 749                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 750
 751         /* Make sure device is powered up for SRAM reads */
 752         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 753         if (iwl_grab_nic_access(priv)) {
 754                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 755                 return;
 756         }
 757
 758         /* Set starting address; reads will auto-increment */
 759         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
 760         rmb();
 761
 762         /*
 763          * "time" is actually "data" for mode 0 (no timestamp).
 764          * place event id # at far right for easier visual parsing.
 765          */
 766         for (i = 0; i < num_events; i++) {
 767                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 768                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 769                 if (mode == 0) {
 770                         trace_iwlwifi_dev_ucode_cont_event(priv,
 771                                                         0, time, ev);
 772                 } else {
 773                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 774                         trace_iwlwifi_dev_ucode_cont_event(priv,
 775                                                 time, data, ev);
 776                 }
 777         }
 778         /* Allow device to power down */
 779         iwl_release_nic_access(priv);
 780         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 781 }
 782
 783 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 784 {
 785         u32 capacity;   /* event log capacity in # entries */
 786         u32 base;       /* SRAM byte address of event log header */
 787         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 788         u32 num_wraps;  /* # times uCode wrapped to top of log */
 789         u32 next_entry; /* index of next entry to be written by uCode */
 790
 791         if (priv->ucode_type == UCODE_INIT)
 792                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
 793         else
 794                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
 795         if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
 796                 capacity = iwl_read_targ_mem(priv, base);
 797                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 798                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 799                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 800         } else
 801                 return;
 802
 803         if (num_wraps == priv->event_log.num_wraps) {
 804                 iwl_print_cont_event_trace(priv,
 805                                        base, priv->event_log.next_entry,
 806                                        next_entry - priv->event_log.next_entry,
 807                                        mode);
 808                 priv->event_log.non_wraps_count++;
 809         } else {
 810                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 811                         priv->event_log.wraps_more_count++;
 812                 else
 813                         priv->event_log.wraps_once_count++;
 814                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 815                                 num_wraps - priv->event_log.num_wraps,
 816                                 next_entry, priv->event_log.next_entry);
 817                 if (next_entry < priv->event_log.next_entry) {
 818                         iwl_print_cont_event_trace(priv, base,
 819                                priv->event_log.next_entry,
 820                                capacity - priv->event_log.next_entry,
 821                                mode);
 822
 823                         iwl_print_cont_event_trace(priv, base, 0,
 824                                 next_entry, mode);
 825                 } else {
 826                         iwl_print_cont_event_trace(priv, base,
 827                                next_entry, capacity - next_entry,
 828                                mode);
 829
 830                         iwl_print_cont_event_trace(priv, base, 0,
 831                                 next_entry, mode);
 832                 }
 833         }
 834         priv->event_log.num_wraps = num_wraps;
 835         priv->event_log.next_entry = next_entry;
 836 }
 837
 838 /**
 839  * iwl_bg_ucode_trace - Timer callback to log ucode event
 840  *
 841  * The timer is continually set to execute every
 842  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 843  * this function is to perform continuous uCode event logging operation
 844  * if enabled
 845  */
 846 static void iwl_bg_ucode_trace(unsigned long data)
 847 {
 848         struct iwl_priv *priv = (struct iwl_priv *)data;
 849
 850         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 851                 return;
 852
 853         if (priv->event_log.ucode_trace) {
 854                 iwl_continuous_event_trace(priv);
 855                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 856                 mod_timer(&priv->ucode_trace,
 857                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 858         }
 859 }
 860
 861 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 862                                 struct iwl_rx_mem_buffer *rxb)
 863 {
 864         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 865         struct iwl4965_beacon_notif *beacon =
 866                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 867 #ifdef CONFIG_IWLWIFI_DEBUG
 868         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 869
 870         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 871                 "tsf %d %d rate %d\n",
 872                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 873                 beacon->beacon_notify_hdr.failure_frame,
 874                 le32_to_cpu(beacon->ibss_mgr_status),
 875                 le32_to_cpu(beacon->high_tsf),
 876                 le32_to_cpu(beacon->low_tsf), rate);
 877 #endif
 878
 879         priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
 880
 881         if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
 882                 queue_work(priv->workqueue, &priv->beacon_update);
 883 }
 884
 885 /* Handle notification from uCode that card's power state is changing
 886  * due to software, hardware, or critical temperature RFKILL */
 887 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 888                                     struct iwl_rx_mem_buffer *rxb)
 889 {
 890         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 891         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 892         unsigned long status = priv->status;
 893
 894         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
 895                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 896                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 897                           (flags & CT_CARD_DISABLED) ?
 898                           "Reached" : "Not reached");
 899
 900         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 901                      CT_CARD_DISABLED)) {
 902
 903                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 904                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 905
 906                 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 907                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 908
 909                 if (!(flags & RXON_CARD_DISABLED)) {
 910                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 911                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 912                         iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 913                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 914                 }
 915                 if (flags & CT_CARD_DISABLED)
 916                         iwl_tt_enter_ct_kill(priv);
 917         }
 918         if (!(flags & CT_CARD_DISABLED))
 919                 iwl_tt_exit_ct_kill(priv);
 920
 921         if (flags & HW_CARD_DISABLED)
 922                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 923         else
 924                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 925
 926
 927         if (!(flags & RXON_CARD_DISABLED))
 928                 iwl_scan_cancel(priv);
 929
 930         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 931              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 932                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 933                         test_bit(STATUS_RF_KILL_HW, &priv->status));
 934         else
 935                 wake_up_interruptible(&priv->wait_command_queue);
 936 }
 937
 938 static void iwl_bg_tx_flush(struct work_struct *work)
 939 {
 940         struct iwl_priv *priv =
 941                 container_of(work, struct iwl_priv, tx_flush);
 942
 943         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 944                 return;
 945
 946         /* do nothing if rf-kill is on */
 947         if (!iwl_is_ready_rf(priv))
 948                 return;
 949
 950         if (priv->cfg->ops->lib->txfifo_flush) {
 951                 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 952                 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 953         }
 954 }
 955
 956 /**
 957  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 958  *
 959  * Setup the RX handlers for each of the reply types sent from the uCode
 960  * to the host.
 961  *
 962  * This function chains into the hardware specific files for them to setup
 963  * any hardware specific handlers as well.
 964  */
 965 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 966 {
 967         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 968         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 969         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 970         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
 971                         iwl_rx_spectrum_measure_notif;
 972         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 973         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 974             iwl_rx_pm_debug_statistics_notif;
 975         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 976
 977         /*
 978          * The same handler is used for both the REPLY to a discrete
 979          * statistics request from the host as well as for the periodic
 980          * statistics notifications (after received beacons) from the uCode.
 981          */
 982         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
 983         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 984
 985         iwl_setup_rx_scan_handlers(priv);
 986
 987         /* status change handler */
 988         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 989
 990         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 991             iwl_rx_missed_beacon_notif;
 992         /* Rx handlers */
 993         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
 994         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
 995         /* block ack */
 996         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
 997         /* Set up hardware specific Rx handlers */
 998         priv->cfg->ops->lib->rx_handler_setup(priv);
 999 }
1000
1001 /**
1002  * iwl_rx_handle - Main entry function for receiving responses from uCode
1003  *
1004  * Uses the priv->rx_handlers callback function array to invoke
1005  * the appropriate handlers, including command responses,
1006  * frame-received notifications, and other notifications.
1007  */
1008 void iwl_rx_handle(struct iwl_priv *priv)
1009 {
1010         struct iwl_rx_mem_buffer *rxb;
1011         struct iwl_rx_packet *pkt;
1012         struct iwl_rx_queue *rxq = &priv->rxq;
1013         u32 r, i;
1014         int reclaim;
1015         unsigned long flags;
1016         u8 fill_rx = 0;
1017         u32 count = 8;
1018         int total_empty;
1019
1020         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1021          * buffer that the driver may process (last buffer filled by ucode). */
1022         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1023         i = rxq->read;
1024
1025         /* Rx interrupt, but nothing sent from uCode */
1026         if (i == r)
1027                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1028
1029         /* calculate total frames need to be restock after handling RX */
1030         total_empty = r - rxq->write_actual;
1031         if (total_empty < 0)
1032                 total_empty += RX_QUEUE_SIZE;
1033
1034         if (total_empty > (RX_QUEUE_SIZE / 2))
1035                 fill_rx = 1;
1036
1037         while (i != r) {
1038                 int len;
1039
1040                 rxb = rxq->queue[i];
1041
1042                 /* If an RXB doesn't have a Rx queue slot associated with it,
1043                  * then a bug has been introduced in the queue refilling
1044                  * routines -- catch it here */
1045                 BUG_ON(rxb == NULL);
1046
1047                 rxq->queue[i] = NULL;
1048
1049                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1050                                PAGE_SIZE << priv->hw_params.rx_page_order,
1051                                PCI_DMA_FROMDEVICE);
1052                 pkt = rxb_addr(rxb);
1053
1054                 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1055                 len += sizeof(u32); /* account for status word */
1056                 trace_iwlwifi_dev_rx(priv, pkt, len);
1057
1058                 /* Reclaim a command buffer only if this packet is a response
1059                  *   to a (driver-originated) command.
1060                  * If the packet (e.g. Rx frame) originated from uCode,
1061                  *   there is no command buffer to reclaim.
1062                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1063                  *   but apparently a few don't get set; catch them here. */
1064                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1065                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1066                         (pkt->hdr.cmd != REPLY_RX) &&
1067                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1068                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1069                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1070                         (pkt->hdr.cmd != REPLY_TX);
1071
1072                 /* Based on type of command response or notification,
1073                  *   handle those that need handling via function in
1074                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1075                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1076                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1077                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1078                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1079                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1080                 } else {
1081                         /* No handling needed */
1082                         IWL_DEBUG_RX(priv,
1083                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1084                                 r, i, get_cmd_string(pkt->hdr.cmd),
1085                                 pkt->hdr.cmd);
1086                 }
1087
1088                 /*
1089                  * XXX: After here, we should always check rxb->page
1090                  * against NULL before touching it or its virtual
1091                  * memory (pkt). Because some rx_handler might have
1092                  * already taken or freed the pages.
1093                  */
1094
1095                 if (reclaim) {
1096                         /* Invoke any callbacks, transfer the buffer to caller,
1097                          * and fire off the (possibly) blocking iwl_send_cmd()
1098                          * as we reclaim the driver command queue */
1099                         if (rxb->page)
1100                                 iwl_tx_cmd_complete(priv, rxb);
1101                         else
1102                                 IWL_WARN(priv, "Claim null rxb?\n");
1103                 }
1104
1105                 /* Reuse the page if possible. For notification packets and
1106                  * SKBs that fail to Rx correctly, add them back into the
1107                  * rx_free list for reuse later. */
1108                 spin_lock_irqsave(&rxq->lock, flags);
1109                 if (rxb->page != NULL) {
1110                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1111                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1112                                 PCI_DMA_FROMDEVICE);
1113                         list_add_tail(&rxb->list, &rxq->rx_free);
1114                         rxq->free_count++;
1115                 } else
1116                         list_add_tail(&rxb->list, &rxq->rx_used);
1117
1118                 spin_unlock_irqrestore(&rxq->lock, flags);
1119
1120                 i = (i + 1) & RX_QUEUE_MASK;
1121                 /* If there are a lot of unused frames,
1122                  * restock the Rx queue so ucode wont assert. */
1123                 if (fill_rx) {
1124                         count++;
1125                         if (count >= 8) {
1126                                 rxq->read = i;
1127                                 iwlagn_rx_replenish_now(priv);
1128                                 count = 0;
1129                         }
1130                 }
1131         }
1132
1133         /* Backtrack one entry */
1134         rxq->read = i;
1135         if (fill_rx)
1136                 iwlagn_rx_replenish_now(priv);
1137         else
1138                 iwlagn_rx_queue_restock(priv);
1139 }
1140
1141 /* call this function to flush any scheduled tasklet */
1142 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1143 {
1144         /* wait to make sure we flush pending tasklet*/
1145         synchronize_irq(priv->pci_dev->irq);
1146         tasklet_kill(&priv->irq_tasklet);
1147 }
1148
1149 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1150 {
1151         u32 inta, handled = 0;
1152         u32 inta_fh;
1153         unsigned long flags;
1154         u32 i;
1155 #ifdef CONFIG_IWLWIFI_DEBUG
1156         u32 inta_mask;
1157 #endif
1158
1159         spin_lock_irqsave(&priv->lock, flags);
1160
1161         /* Ack/clear/reset pending uCode interrupts.
1162          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1163          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1164         inta = iwl_read32(priv, CSR_INT);
1165         iwl_write32(priv, CSR_INT, inta);
1166
1167         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1168          * Any new interrupts that happen after this, either while we're
1169          * in this tasklet, or later, will show up in next ISR/tasklet. */
1170         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1171         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1172
1173 #ifdef CONFIG_IWLWIFI_DEBUG
1174         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1175                 /* just for debug */
1176                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1177                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1178                               inta, inta_mask, inta_fh);
1179         }
1180 #endif
1181
1182         spin_unlock_irqrestore(&priv->lock, flags);
1183
1184         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1185          * atomic, make sure that inta covers all the interrupts that
1186          * we've discovered, even if FH interrupt came in just after
1187          * reading CSR_INT. */
1188         if (inta_fh & CSR49_FH_INT_RX_MASK)
1189                 inta |= CSR_INT_BIT_FH_RX;
1190         if (inta_fh & CSR49_FH_INT_TX_MASK)
1191                 inta |= CSR_INT_BIT_FH_TX;
1192
1193         /* Now service all interrupt bits discovered above. */
1194         if (inta & CSR_INT_BIT_HW_ERR) {
1195                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1196
1197                 /* Tell the device to stop sending interrupts */
1198                 iwl_disable_interrupts(priv);
1199
1200                 priv->isr_stats.hw++;
1201                 iwl_irq_handle_error(priv);
1202
1203                 handled |= CSR_INT_BIT_HW_ERR;
1204
1205                 return;
1206         }
1207
1208 #ifdef CONFIG_IWLWIFI_DEBUG
1209         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1210                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1211                 if (inta & CSR_INT_BIT_SCD) {
1212                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1213                                       "the frame/frames.\n");
1214                         priv->isr_stats.sch++;
1215                 }
1216
1217                 /* Alive notification via Rx interrupt will do the real work */
1218                 if (inta & CSR_INT_BIT_ALIVE) {
1219                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1220                         priv->isr_stats.alive++;
1221                 }
1222         }
1223 #endif
1224         /* Safely ignore these bits for debug checks below */
1225         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1226
1227         /* HW RF KILL switch toggled */
1228         if (inta & CSR_INT_BIT_RF_KILL) {
1229                 int hw_rf_kill = 0;
1230                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1231                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1232                         hw_rf_kill = 1;
1233
1234                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1235                                 hw_rf_kill ? "disable radio" : "enable radio");
1236
1237                 priv->isr_stats.rfkill++;
1238
1239                 /* driver only loads ucode once setting the interface up.
1240                  * the driver allows loading the ucode even if the radio
1241                  * is killed. Hence update the killswitch state here. The
1242                  * rfkill handler will care about restarting if needed.
1243                  */
1244                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1245                         if (hw_rf_kill)
1246                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1247                         else
1248                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1249                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1250                 }
1251
1252                 handled |= CSR_INT_BIT_RF_KILL;
1253         }
1254
1255         /* Chip got too hot and stopped itself */
1256         if (inta & CSR_INT_BIT_CT_KILL) {
1257                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1258                 priv->isr_stats.ctkill++;
1259                 handled |= CSR_INT_BIT_CT_KILL;
1260         }
1261
1262         /* Error detected by uCode */
1263         if (inta & CSR_INT_BIT_SW_ERR) {
1264                 IWL_ERR(priv, "Microcode SW error detected. "
1265                         " Restarting 0x%X.\n", inta);
1266                 priv->isr_stats.sw++;
1267                 iwl_irq_handle_error(priv);
1268                 handled |= CSR_INT_BIT_SW_ERR;
1269         }
1270
1271         /*
1272          * uCode wakes up after power-down sleep.
1273          * Tell device about any new tx or host commands enqueued,
1274          * and about any Rx buffers made available while asleep.
1275          */
1276         if (inta & CSR_INT_BIT_WAKEUP) {
1277                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1278                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1279                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1280                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1281                 priv->isr_stats.wakeup++;
1282                 handled |= CSR_INT_BIT_WAKEUP;
1283         }
1284
1285         /* All uCode command responses, including Tx command responses,
1286          * Rx "responses" (frame-received notification), and other
1287          * notifications from uCode come through here*/
1288         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1289                 iwl_rx_handle(priv);
1290                 priv->isr_stats.rx++;
1291                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1292         }
1293
1294         /* This "Tx" DMA channel is used only for loading uCode */
1295         if (inta & CSR_INT_BIT_FH_TX) {
1296                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1297                 priv->isr_stats.tx++;
1298                 handled |= CSR_INT_BIT_FH_TX;
1299                 /* Wake up uCode load routine, now that load is complete */
1300                 priv->ucode_write_complete = 1;
1301                 wake_up_interruptible(&priv->wait_command_queue);
1302         }
1303
1304         if (inta & ~handled) {
1305                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1306                 priv->isr_stats.unhandled++;
1307         }
1308
1309         if (inta & ~(priv->inta_mask)) {
1310                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1311                          inta & ~priv->inta_mask);
1312                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1313         }
1314
1315         /* Re-enable all interrupts */
1316         /* only Re-enable if diabled by irq */
1317         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1318                 iwl_enable_interrupts(priv);
1319
1320 #ifdef CONFIG_IWLWIFI_DEBUG
1321         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1322                 inta = iwl_read32(priv, CSR_INT);
1323                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1324                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1325                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1326                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1327         }
1328 #endif
1329 }
1330
1331 /* tasklet for iwlagn interrupt */
1332 static void iwl_irq_tasklet(struct iwl_priv *priv)
1333 {
1334         u32 inta = 0;
1335         u32 handled = 0;
1336         unsigned long flags;
1337         u32 i;
1338 #ifdef CONFIG_IWLWIFI_DEBUG
1339         u32 inta_mask;
1340 #endif
1341
1342         spin_lock_irqsave(&priv->lock, flags);
1343
1344         /* Ack/clear/reset pending uCode interrupts.
1345          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1346          */
1347         /* There is a hardware bug in the interrupt mask function that some
1348          * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1349          * they are disabled in the CSR_INT_MASK register. Furthermore the
1350          * ICT interrupt handling mechanism has another bug that might cause
1351          * these unmasked interrupts fail to be detected. We workaround the
1352          * hardware bugs here by ACKing all the possible interrupts so that
1353          * interrupt coalescing can still be achieved.
1354          */
1355         iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
1356
1357         inta = priv->_agn.inta;
1358
1359 #ifdef CONFIG_IWLWIFI_DEBUG
1360         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1361                 /* just for debug */
1362                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1363                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1364                                 inta, inta_mask);
1365         }
1366 #endif
1367
1368         spin_unlock_irqrestore(&priv->lock, flags);
1369
1370         /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1371         priv->_agn.inta = 0;
1372
1373         /* Now service all interrupt bits discovered above. */
1374         if (inta & CSR_INT_BIT_HW_ERR) {
1375                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1376
1377                 /* Tell the device to stop sending interrupts */
1378                 iwl_disable_interrupts(priv);
1379
1380                 priv->isr_stats.hw++;
1381                 iwl_irq_handle_error(priv);
1382
1383                 handled |= CSR_INT_BIT_HW_ERR;
1384
1385                 return;
1386         }
1387
1388 #ifdef CONFIG_IWLWIFI_DEBUG
1389         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1390                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1391                 if (inta & CSR_INT_BIT_SCD) {
1392                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1393                                       "the frame/frames.\n");
1394                         priv->isr_stats.sch++;
1395                 }
1396
1397                 /* Alive notification via Rx interrupt will do the real work */
1398                 if (inta & CSR_INT_BIT_ALIVE) {
1399                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1400                         priv->isr_stats.alive++;
1401                 }
1402         }
1403 #endif
1404         /* Safely ignore these bits for debug checks below */
1405         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1406
1407         /* HW RF KILL switch toggled */
1408         if (inta & CSR_INT_BIT_RF_KILL) {
1409                 int hw_rf_kill = 0;
1410                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1411                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1412                         hw_rf_kill = 1;
1413
1414                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1415                                 hw_rf_kill ? "disable radio" : "enable radio");
1416
1417                 priv->isr_stats.rfkill++;
1418
1419                 /* driver only loads ucode once setting the interface up.
1420                  * the driver allows loading the ucode even if the radio
1421                  * is killed. Hence update the killswitch state here. The
1422                  * rfkill handler will care about restarting if needed.
1423                  */
1424                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1425                         if (hw_rf_kill)
1426                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1427                         else
1428                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1429                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1430                 }
1431
1432                 handled |= CSR_INT_BIT_RF_KILL;
1433         }
1434
1435         /* Chip got too hot and stopped itself */
1436         if (inta & CSR_INT_BIT_CT_KILL) {
1437                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1438                 priv->isr_stats.ctkill++;
1439                 handled |= CSR_INT_BIT_CT_KILL;
1440         }
1441
1442         /* Error detected by uCode */
1443         if (inta & CSR_INT_BIT_SW_ERR) {
1444                 IWL_ERR(priv, "Microcode SW error detected. "
1445                         " Restarting 0x%X.\n", inta);
1446                 priv->isr_stats.sw++;
1447                 iwl_irq_handle_error(priv);
1448                 handled |= CSR_INT_BIT_SW_ERR;
1449         }
1450
1451         /* uCode wakes up after power-down sleep */
1452         if (inta & CSR_INT_BIT_WAKEUP) {
1453                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1454                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1455                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1456                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1457
1458                 priv->isr_stats.wakeup++;
1459
1460                 handled |= CSR_INT_BIT_WAKEUP;
1461         }
1462
1463         /* All uCode command responses, including Tx command responses,
1464          * Rx "responses" (frame-received notification), and other
1465          * notifications from uCode come through here*/
1466         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1467                         CSR_INT_BIT_RX_PERIODIC)) {
1468                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1469                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1470                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1471                         iwl_write32(priv, CSR_FH_INT_STATUS,
1472                                         CSR49_FH_INT_RX_MASK);
1473                 }
1474                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1475                         handled |= CSR_INT_BIT_RX_PERIODIC;
1476                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1477                 }
1478                 /* Sending RX interrupt require many steps to be done in the
1479                  * the device:
1480                  * 1- write interrupt to current index in ICT table.
1481                  * 2- dma RX frame.
1482                  * 3- update RX shared data to indicate last write index.
1483                  * 4- send interrupt.
1484                  * This could lead to RX race, driver could receive RX interrupt
1485                  * but the shared data changes does not reflect this;
1486                  * periodic interrupt will detect any dangling Rx activity.
1487                  */
1488
1489                 /* Disable periodic interrupt; we use it as just a one-shot. */
1490                 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1491                             CSR_INT_PERIODIC_DIS);
1492                 iwl_rx_handle(priv);
1493
1494                 /*
1495                  * Enable periodic interrupt in 8 msec only if we received
1496                  * real RX interrupt (instead of just periodic int), to catch
1497                  * any dangling Rx interrupt.  If it was just the periodic
1498                  * interrupt, there was no dangling Rx activity, and no need
1499                  * to extend the periodic interrupt; one-shot is enough.
1500                  */
1501                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1502                         iwl_write8(priv, CSR_INT_PERIODIC_REG,
1503                                     CSR_INT_PERIODIC_ENA);
1504
1505                 priv->isr_stats.rx++;
1506         }
1507
1508         /* This "Tx" DMA channel is used only for loading uCode */
1509         if (inta & CSR_INT_BIT_FH_TX) {
1510                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1511                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1512                 priv->isr_stats.tx++;
1513                 handled |= CSR_INT_BIT_FH_TX;
1514                 /* Wake up uCode load routine, now that load is complete */
1515                 priv->ucode_write_complete = 1;
1516                 wake_up_interruptible(&priv->wait_command_queue);
1517         }
1518
1519         if (inta & ~handled) {
1520                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1521                 priv->isr_stats.unhandled++;
1522         }
1523
1524         if (inta & ~(priv->inta_mask)) {
1525                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1526                          inta & ~priv->inta_mask);
1527         }
1528
1529         /* Re-enable all interrupts */
1530         /* only Re-enable if diabled by irq */
1531         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1532                 iwl_enable_interrupts(priv);
1533 }
1534
1535 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1536 #define ACK_CNT_RATIO (50)
1537 #define BA_TIMEOUT_CNT (5)
1538 #define BA_TIMEOUT_MAX (16)
1539
1540 /**
1541  * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1542  *
1543  * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1544  * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1545  * operation state.
1546  */
1547 bool iwl_good_ack_health(struct iwl_priv *priv,
1548                                 struct iwl_rx_packet *pkt)
1549 {
1550         bool rc = true;
1551         int actual_ack_cnt_delta, expected_ack_cnt_delta;
1552         int ba_timeout_delta;
1553
1554         actual_ack_cnt_delta =
1555                 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1556                 le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1557         expected_ack_cnt_delta =
1558                 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1559                 le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1560         ba_timeout_delta =
1561                 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1562                 le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1563         if ((priv->_agn.agg_tids_count > 0) &&
1564             (expected_ack_cnt_delta > 0) &&
1565             (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1566                 < ACK_CNT_RATIO) &&
1567             (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1568                 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1569                                 " expected_ack_cnt = %d\n",
1570                                 actual_ack_cnt_delta, expected_ack_cnt_delta);
1571
1572 #ifdef CONFIG_IWLWIFI_DEBUGFS
1573                 /*
1574                  * This is ifdef'ed on DEBUGFS because otherwise the
1575                  * statistics aren't available. If DEBUGFS is set but
1576                  * DEBUG is not, these will just compile out.
1577                  */
1578                 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1579                                 priv->_agn.delta_statistics.tx.rx_detected_cnt);
1580                 IWL_DEBUG_RADIO(priv,
1581                                 "ack_or_ba_timeout_collision delta = %d\n",
1582                                 priv->_agn.delta_statistics.tx.
1583                                 ack_or_ba_timeout_collision);
1584 #endif
1585                 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1586                                 ba_timeout_delta);
1587                 if (!actual_ack_cnt_delta &&
1588                     (ba_timeout_delta >= BA_TIMEOUT_MAX))
1589                         rc = false;
1590         }
1591         return rc;
1592 }
1593
1594
1595 /*****************************************************************************
1596  *
1597  * sysfs attributes
1598  *
1599  *****************************************************************************/
1600
1601 #ifdef CONFIG_IWLWIFI_DEBUG
1602
1603 /*
1604  * The following adds a new attribute to the sysfs representation
1605  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
1606  * used for controlling the debug level.
1607  *
1608  * See the level definitions in iwl for details.
1609  *
1610  * The debug_level being managed using sysfs below is a per device debug
1611  * level that is used instead of the global debug level if it (the per
1612  * device debug level) is set.
1613  */
1614 static ssize_t show_debug_level(struct device *d,
1615                                 struct device_attribute *attr, char *buf)
1616 {
1617         struct iwl_priv *priv = dev_get_drvdata(d);
1618         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1619 }
1620 static ssize_t store_debug_level(struct device *d,
1621                                 struct device_attribute *attr,
1622                                  const char *buf, size_t count)
1623 {
1624         struct iwl_priv *priv = dev_get_drvdata(d);
1625         unsigned long val;
1626         int ret;
1627
1628         ret = strict_strtoul(buf, 0, &val);
1629         if (ret)
1630                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1631         else {
1632                 priv->debug_level = val;
1633                 if (iwl_alloc_traffic_mem(priv))
1634                         IWL_ERR(priv,
1635                                 "Not enough memory to generate traffic log\n");
1636         }
1637         return strnlen(buf, count);
1638 }
1639
1640 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1641                         show_debug_level, store_debug_level);
1642
1643
1644 #endif /* CONFIG_IWLWIFI_DEBUG */
1645
1646
1647 static ssize_t show_temperature(struct device *d,
1648                                 struct device_attribute *attr, char *buf)
1649 {
1650         struct iwl_priv *priv = dev_get_drvdata(d);
1651
1652         if (!iwl_is_alive(priv))
1653                 return -EAGAIN;
1654
1655         return sprintf(buf, "%d\n", priv->temperature);
1656 }
1657
1658 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1659
1660 static ssize_t show_tx_power(struct device *d,
1661                              struct device_attribute *attr, char *buf)
1662 {
1663         struct iwl_priv *priv = dev_get_drvdata(d);
1664
1665         if (!iwl_is_ready_rf(priv))
1666                 return sprintf(buf, "off\n");
1667         else
1668                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1669 }
1670
1671 static ssize_t store_tx_power(struct device *d,
1672                               struct device_attribute *attr,
1673                               const char *buf, size_t count)
1674 {
1675         struct iwl_priv *priv = dev_get_drvdata(d);
1676         unsigned long val;
1677         int ret;
1678
1679         ret = strict_strtoul(buf, 10, &val);
1680         if (ret)
1681                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1682         else {
1683                 ret = iwl_set_tx_power(priv, val, false);
1684                 if (ret)
1685                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1686                                 ret);
1687                 else
1688                         ret = count;
1689         }
1690         return ret;
1691 }
1692
1693 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1694
1695 static struct attribute *iwl_sysfs_entries[] = {
1696         &dev_attr_temperature.attr,
1697         &dev_attr_tx_power.attr,
1698 #ifdef CONFIG_IWLWIFI_DEBUG
1699         &dev_attr_debug_level.attr,
1700 #endif
1701         NULL
1702 };
1703
1704 static struct attribute_group iwl_attribute_group = {
1705         .name = NULL,           /* put in device directory */
1706         .attrs = iwl_sysfs_entries,
1707 };
1708
1709 /******************************************************************************
1710  *
1711  * uCode download functions
1712  *
1713  ******************************************************************************/
1714
1715 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1716 {
1717         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1718         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1719         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1720         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1721         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1722         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1723 }
1724
1725 static void iwl_nic_start(struct iwl_priv *priv)
1726 {
1727         /* Remove all resets to allow NIC to operate */
1728         iwl_write32(priv, CSR_RESET, 0);
1729 }
1730
1731 struct iwlagn_ucode_capabilities {
1732         u32 max_probe_length;
1733         u32 standard_phy_calibration_size;
1734         bool pan;
1735 };
1736
1737 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1738 static int iwl_mac_setup_register(struct iwl_priv *priv,
1739                                   struct iwlagn_ucode_capabilities *capa);
1740
1741 #define UCODE_EXPERIMENTAL_INDEX        100
1742 #define UCODE_EXPERIMENTAL_TAG          "exp"
1743
1744 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1745 {
1746         const char *name_pre = priv->cfg->fw_name_pre;
1747         char tag[8];
1748
1749         if (first) {
1750 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1751                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1752                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1753         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1754 #endif
1755                 priv->fw_index = priv->cfg->ucode_api_max;
1756                 sprintf(tag, "%d", priv->fw_index);
1757         } else {
1758                 priv->fw_index--;
1759                 sprintf(tag, "%d", priv->fw_index);
1760         }
1761
1762         if (priv->fw_index < priv->cfg->ucode_api_min) {
1763                 IWL_ERR(priv, "no suitable firmware found!\n");
1764                 return -ENOENT;
1765         }
1766
1767         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1768
1769         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1770                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1771                                 ? "EXPERIMENTAL " : "",
1772                        priv->firmware_name);
1773
1774         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1775                                        &priv->pci_dev->dev, GFP_KERNEL, priv,
1776                                        iwl_ucode_callback);
1777 }
1778
1779 struct iwlagn_firmware_pieces {
1780         const void *inst, *data, *init, *init_data, *boot;
1781         size_t inst_size, data_size, init_size, init_data_size, boot_size;
1782
1783         u32 build;
1784
1785         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1786         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1787 };
1788
1789 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1790                                        const struct firmware *ucode_raw,
1791                                        struct iwlagn_firmware_pieces *pieces)
1792 {
1793         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1794         u32 api_ver, hdr_size;
1795         const u8 *src;
1796
1797         priv->ucode_ver = le32_to_cpu(ucode->ver);
1798         api_ver = IWL_UCODE_API(priv->ucode_ver);
1799
1800         switch (api_ver) {
1801         default:
1802                 /*
1803                  * 4965 doesn't revision the firmware file format
1804                  * along with the API version, it always uses v1
1805                  * file format.
1806                  */
1807                 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
1808                                 CSR_HW_REV_TYPE_4965) {
1809                         hdr_size = 28;
1810                         if (ucode_raw->size < hdr_size) {
1811                                 IWL_ERR(priv, "File size too small!\n");
1812                                 return -EINVAL;
1813                         }
1814                         pieces->build = le32_to_cpu(ucode->u.v2.build);
1815                         pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1816                         pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1817                         pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1818                         pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1819                         pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
1820                         src = ucode->u.v2.data;
1821                         break;
1822                 }
1823                 /* fall through for 4965 */
1824         case 0:
1825         case 1:
1826         case 2:
1827                 hdr_size = 24;
1828                 if (ucode_raw->size < hdr_size) {
1829                         IWL_ERR(priv, "File size too small!\n");
1830                         return -EINVAL;
1831                 }
1832                 pieces->build = 0;
1833                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1834                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1835                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1836                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1837                 pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
1838                 src = ucode->u.v1.data;
1839                 break;
1840         }
1841
1842         /* Verify size of file vs. image size info in file's header */
1843         if (ucode_raw->size != hdr_size + pieces->inst_size +
1844                                 pieces->data_size + pieces->init_size +
1845                                 pieces->init_data_size + pieces->boot_size) {
1846
1847                 IWL_ERR(priv,
1848                         "uCode file size %d does not match expected size\n",
1849                         (int)ucode_raw->size);
1850                 return -EINVAL;
1851         }
1852
1853         pieces->inst = src;
1854         src += pieces->inst_size;
1855         pieces->data = src;
1856         src += pieces->data_size;
1857         pieces->init = src;
1858         src += pieces->init_size;
1859         pieces->init_data = src;
1860         src += pieces->init_data_size;
1861         pieces->boot = src;
1862         src += pieces->boot_size;
1863
1864         return 0;
1865 }
1866
1867 static int iwlagn_wanted_ucode_alternative = 1;
1868
1869 static int iwlagn_load_firmware(struct iwl_priv *priv,
1870                                 const struct firmware *ucode_raw,
1871                                 struct iwlagn_firmware_pieces *pieces,
1872                                 struct iwlagn_ucode_capabilities *capa)
1873 {
1874         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1875         struct iwl_ucode_tlv *tlv;
1876         size_t len = ucode_raw->size;
1877         const u8 *data;
1878         int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1879         u64 alternatives;
1880         u32 tlv_len;
1881         enum iwl_ucode_tlv_type tlv_type;
1882         const u8 *tlv_data;
1883
1884         if (len < sizeof(*ucode)) {
1885                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1886                 return -EINVAL;
1887         }
1888
1889         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1890                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1891                         le32_to_cpu(ucode->magic));
1892                 return -EINVAL;
1893         }
1894
1895         /*
1896          * Check which alternatives are present, and "downgrade"
1897          * when the chosen alternative is not present, warning
1898          * the user when that happens. Some files may not have
1899          * any alternatives, so don't warn in that case.
1900          */
1901         alternatives = le64_to_cpu(ucode->alternatives);
1902         tmp = wanted_alternative;
1903         if (wanted_alternative > 63)
1904                 wanted_alternative = 63;
1905         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1906                 wanted_alternative--;
1907         if (wanted_alternative && wanted_alternative != tmp)
1908                 IWL_WARN(priv,
1909                          "uCode alternative %d not available, choosing %d\n",
1910                          tmp, wanted_alternative);
1911
1912         priv->ucode_ver = le32_to_cpu(ucode->ver);
1913         pieces->build = le32_to_cpu(ucode->build);
1914         data = ucode->data;
1915
1916         len -= sizeof(*ucode);
1917
1918         while (len >= sizeof(*tlv)) {
1919                 u16 tlv_alt;
1920
1921                 len -= sizeof(*tlv);
1922                 tlv = (void *)data;
1923
1924                 tlv_len = le32_to_cpu(tlv->length);
1925                 tlv_type = le16_to_cpu(tlv->type);
1926                 tlv_alt = le16_to_cpu(tlv->alternative);
1927                 tlv_data = tlv->data;
1928
1929                 if (len < tlv_len) {
1930                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1931                                 len, tlv_len);
1932                         return -EINVAL;
1933                 }
1934                 len -= ALIGN(tlv_len, 4);
1935                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1936
1937                 /*
1938                  * Alternative 0 is always valid.
1939                  *
1940                  * Skip alternative TLVs that are not selected.
1941                  */
1942                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1943                         continue;
1944
1945                 switch (tlv_type) {
1946                 case IWL_UCODE_TLV_INST:
1947                         pieces->inst = tlv_data;
1948                         pieces->inst_size = tlv_len;
1949                         break;
1950                 case IWL_UCODE_TLV_DATA:
1951                         pieces->data = tlv_data;
1952                         pieces->data_size = tlv_len;
1953                         break;
1954                 case IWL_UCODE_TLV_INIT:
1955                         pieces->init = tlv_data;
1956                         pieces->init_size = tlv_len;
1957                         break;
1958                 case IWL_UCODE_TLV_INIT_DATA:
1959                         pieces->init_data = tlv_data;
1960                         pieces->init_data_size = tlv_len;
1961                         break;
1962                 case IWL_UCODE_TLV_BOOT:
1963                         pieces->boot = tlv_data;
1964                         pieces->boot_size = tlv_len;
1965                         break;
1966                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1967                         if (tlv_len != sizeof(u32))
1968                                 goto invalid_tlv_len;
1969                         capa->max_probe_length =
1970                                         le32_to_cpup((__le32 *)tlv_data);
1971                         break;
1972                 case IWL_UCODE_TLV_PAN:
1973                         if (tlv_len)
1974                                 goto invalid_tlv_len;
1975                         capa->pan = true;
1976                         break;
1977                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1978                         if (tlv_len != sizeof(u32))
1979                                 goto invalid_tlv_len;
1980                         pieces->init_evtlog_ptr =
1981                                         le32_to_cpup((__le32 *)tlv_data);
1982                         break;
1983                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1984                         if (tlv_len != sizeof(u32))
1985                                 goto invalid_tlv_len;
1986                         pieces->init_evtlog_size =
1987                                         le32_to_cpup((__le32 *)tlv_data);
1988                         break;
1989                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1990                         if (tlv_len != sizeof(u32))
1991                                 goto invalid_tlv_len;
1992                         pieces->init_errlog_ptr =
1993                                         le32_to_cpup((__le32 *)tlv_data);
1994                         break;
1995                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1996                         if (tlv_len != sizeof(u32))
1997                                 goto invalid_tlv_len;
1998                         pieces->inst_evtlog_ptr =
1999                                         le32_to_cpup((__le32 *)tlv_data);
2000                         break;
2001                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
2002                         if (tlv_len != sizeof(u32))
2003                                 goto invalid_tlv_len;
2004                         pieces->inst_evtlog_size =
2005                                         le32_to_cpup((__le32 *)tlv_data);
2006                         break;
2007                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
2008                         if (tlv_len != sizeof(u32))
2009                                 goto invalid_tlv_len;
2010                         pieces->inst_errlog_ptr =
2011                                         le32_to_cpup((__le32 *)tlv_data);
2012                         break;
2013                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
2014                         if (tlv_len)
2015                                 goto invalid_tlv_len;
2016                         priv->enhance_sensitivity_table = true;
2017                         break;
2018                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
2019                         if (tlv_len != sizeof(u32))
2020                                 goto invalid_tlv_len;
2021                         capa->standard_phy_calibration_size =
2022                                         le32_to_cpup((__le32 *)tlv_data);
2023                         break;
2024                 default:
2025                         IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
2026                         break;
2027                 }
2028         }
2029
2030         if (len) {
2031                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
2032                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
2033                 return -EINVAL;
2034         }
2035
2036         return 0;
2037
2038  invalid_tlv_len:
2039         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
2040         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
2041
2042         return -EINVAL;
2043 }
2044
2045 /**
2046  * iwl_ucode_callback - callback when firmware was loaded
2047  *
2048  * If loaded successfully, copies the firmware into buffers
2049  * for the card to fetch (via DMA).
2050  */
2051 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
2052 {
2053         struct iwl_priv *priv = context;
2054         struct iwl_ucode_header *ucode;
2055         int err;
2056         struct iwlagn_firmware_pieces pieces;
2057         const unsigned int api_max = priv->cfg->ucode_api_max;
2058         const unsigned int api_min = priv->cfg->ucode_api_min;
2059         u32 api_ver;
2060         char buildstr[25];
2061         u32 build;
2062         struct iwlagn_ucode_capabilities ucode_capa = {
2063                 .max_probe_length = 200,
2064                 .standard_phy_calibration_size =
2065                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
2066         };
2067
2068         memset(&pieces, 0, sizeof(pieces));
2069
2070         if (!ucode_raw) {
2071                 if (priv->fw_index <= priv->cfg->ucode_api_max)
2072                         IWL_ERR(priv,
2073                                 "request for firmware file '%s' failed.\n",
2074                                 priv->firmware_name);
2075                 goto try_again;
2076         }
2077
2078         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
2079                        priv->firmware_name, ucode_raw->size);
2080
2081         /* Make sure that we got at least the API version number */
2082         if (ucode_raw->size < 4) {
2083                 IWL_ERR(priv, "File size way too small!\n");
2084                 goto try_again;
2085         }
2086
2087         /* Data from ucode file:  header followed by uCode images */
2088         ucode = (struct iwl_ucode_header *)ucode_raw->data;
2089
2090         if (ucode->ver)
2091                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
2092         else
2093                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
2094                                            &ucode_capa);
2095
2096         if (err)
2097                 goto try_again;
2098
2099         api_ver = IWL_UCODE_API(priv->ucode_ver);
2100         build = pieces.build;
2101
2102         /*
2103          * api_ver should match the api version forming part of the
2104          * firmware filename ... but we don't check for that and only rely
2105          * on the API version read from firmware header from here on forward
2106          */
2107         /* no api version check required for experimental uCode */
2108         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
2109                 if (api_ver < api_min || api_ver > api_max) {
2110                         IWL_ERR(priv,
2111                                 "Driver unable to support your firmware API. "
2112                                 "Driver supports v%u, firmware is v%u.\n",
2113                                 api_max, api_ver);
2114                         goto try_again;
2115                 }
2116
2117                 if (api_ver != api_max)
2118                         IWL_ERR(priv,
2119                                 "Firmware has old API version. Expected v%u, "
2120                                 "got v%u. New firmware can be obtained "
2121                                 "from http://www.intellinuxwireless.org.\n",
2122                                 api_max, api_ver);
2123         }
2124
2125         if (build)
2126                 sprintf(buildstr, " build %u%s", build,
2127                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
2128                                 ? " (EXP)" : "");
2129         else
2130                 buildstr[0] = '\0';
2131
2132         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
2133                  IWL_UCODE_MAJOR(priv->ucode_ver),
2134                  IWL_UCODE_MINOR(priv->ucode_ver),
2135                  IWL_UCODE_API(priv->ucode_ver),
2136                  IWL_UCODE_SERIAL(priv->ucode_ver),
2137                  buildstr);
2138
2139         snprintf(priv->hw->wiphy->fw_version,
2140                  sizeof(priv->hw->wiphy->fw_version),
2141                  "%u.%u.%u.%u%s",
2142                  IWL_UCODE_MAJOR(priv->ucode_ver),
2143                  IWL_UCODE_MINOR(priv->ucode_ver),
2144                  IWL_UCODE_API(priv->ucode_ver),
2145                  IWL_UCODE_SERIAL(priv->ucode_ver),
2146                  buildstr);
2147
2148         /*
2149          * For any of the failures below (before allocating pci memory)
2150          * we will try to load a version with a smaller API -- maybe the
2151          * user just got a corrupted version of the latest API.
2152          */
2153
2154         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2155                        priv->ucode_ver);
2156         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
2157                        pieces.inst_size);
2158         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
2159                        pieces.data_size);
2160         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
2161                        pieces.init_size);
2162         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
2163                        pieces.init_data_size);
2164         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
2165                        pieces.boot_size);
2166
2167         /* Verify that uCode images will fit in card's SRAM */
2168         if (pieces.inst_size > priv->hw_params.max_inst_size) {
2169                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
2170                         pieces.inst_size);
2171                 goto try_again;
2172         }
2173
2174         if (pieces.data_size > priv->hw_params.max_data_size) {
2175                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
2176                         pieces.data_size);
2177                 goto try_again;
2178         }
2179
2180         if (pieces.init_size > priv->hw_params.max_inst_size) {
2181                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
2182                         pieces.init_size);
2183                 goto try_again;
2184         }
2185
2186         if (pieces.init_data_size > priv->hw_params.max_data_size) {
2187                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
2188                         pieces.init_data_size);
2189                 goto try_again;
2190         }
2191
2192         if (pieces.boot_size > priv->hw_params.max_bsm_size) {
2193                 IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
2194                         pieces.boot_size);
2195                 goto try_again;
2196         }
2197
2198         /* Allocate ucode buffers for card's bus-master loading ... */
2199
2200         /* Runtime instructions and 2 copies of data:
2201          * 1) unmodified from disk
2202          * 2) backup cache for save/restore during power-downs */
2203         priv->ucode_code.len = pieces.inst_size;
2204         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2205
2206         priv->ucode_data.len = pieces.data_size;
2207         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2208
2209         priv->ucode_data_backup.len = pieces.data_size;
2210         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2211
2212         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2213             !priv->ucode_data_backup.v_addr)
2214                 goto err_pci_alloc;
2215
2216         /* Initialization instructions and data */
2217         if (pieces.init_size && pieces.init_data_size) {
2218                 priv->ucode_init.len = pieces.init_size;
2219                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2220
2221                 priv->ucode_init_data.len = pieces.init_data_size;
2222                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2223
2224                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2225                         goto err_pci_alloc;
2226         }
2227
2228         /* Bootstrap (instructions only, no data) */
2229         if (pieces.boot_size) {
2230                 priv->ucode_boot.len = pieces.boot_size;
2231                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2232
2233                 if (!priv->ucode_boot.v_addr)
2234                         goto err_pci_alloc;
2235         }
2236
2237         /* Now that we can no longer fail, copy information */
2238
2239         /*
2240          * The (size - 16) / 12 formula is based on the information recorded
2241          * for each event, which is of mode 1 (including timestamp) for all
2242          * new microcodes that include this information.
2243          */
2244         priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
2245         if (pieces.init_evtlog_size)
2246                 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
2247         else
2248                 priv->_agn.init_evtlog_size =
2249                         priv->cfg->base_params->max_event_log_size;
2250         priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
2251         priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
2252         if (pieces.inst_evtlog_size)
2253                 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
2254         else
2255                 priv->_agn.inst_evtlog_size =
2256                         priv->cfg->base_params->max_event_log_size;
2257         priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
2258
2259         if (ucode_capa.pan) {
2260                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
2261                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
2262         } else
2263                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
2264
2265         /* Copy images into buffers for card's bus-master reads ... */
2266
2267         /* Runtime instructions (first block of data in file) */
2268         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
2269                         pieces.inst_size);
2270         memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
2271
2272         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2273                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2274
2275         /*
2276          * Runtime data
2277          * NOTE:  Copy into backup buffer will be done in iwl_up()
2278          */
2279         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
2280                         pieces.data_size);
2281         memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
2282         memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);
2283
2284         /* Initialization instructions */
2285         if (pieces.init_size) {
2286                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2287                                 pieces.init_size);
2288                 memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
2289         }
2290
2291         /* Initialization data */
2292         if (pieces.init_data_size) {
2293                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2294                                pieces.init_data_size);
2295                 memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
2296                        pieces.init_data_size);
2297         }
2298
2299         /* Bootstrap instructions */
2300         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
2301                         pieces.boot_size);
2302         memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
2303
2304         /*
2305          * figure out the offset of chain noise reset and gain commands
2306          * base on the size of standard phy calibration commands table size
2307          */
2308         if (ucode_capa.standard_phy_calibration_size >
2309             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
2310                 ucode_capa.standard_phy_calibration_size =
2311                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
2312
2313         priv->_agn.phy_calib_chain_noise_reset_cmd =
2314                 ucode_capa.standard_phy_calibration_size;
2315         priv->_agn.phy_calib_chain_noise_gain_cmd =
2316                 ucode_capa.standard_phy_calibration_size + 1;
2317
2318         /**************************************************
2319          * This is still part of probe() in a sense...
2320          *
2321          * 9. Setup and register with mac80211 and debugfs
2322          **************************************************/
2323         err = iwl_mac_setup_register(priv, &ucode_capa);
2324         if (err)
2325                 goto out_unbind;
2326
2327         err = iwl_dbgfs_register(priv, DRV_NAME);
2328         if (err)
2329                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2330
2331         err = sysfs_create_group(&priv->pci_dev->dev.kobj,
2332                                         &iwl_attribute_group);
2333         if (err) {
2334                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2335                 goto out_unbind;
2336         }
2337
2338         /* We have our copies now, allow OS release its copies */
2339         release_firmware(ucode_raw);
2340         complete(&priv->_agn.firmware_loading_complete);
2341         return;
2342
2343  try_again:
2344         /* try next, if any */
2345         if (iwl_request_firmware(priv, false))
2346                 goto out_unbind;
2347         release_firmware(ucode_raw);
2348         return;
2349
2350  err_pci_alloc:
2351         IWL_ERR(priv, "failed to allocate pci memory\n");
2352         iwl_dealloc_ucode_pci(priv);
2353  out_unbind:
2354         complete(&priv->_agn.firmware_loading_complete);
2355         device_release_driver(&priv->pci_dev->dev);
2356         release_firmware(ucode_raw);
2357 }
2358
2359 static const char *desc_lookup_text[] = {
2360         "OK",
2361         "FAIL",
2362         "BAD_PARAM",
2363         "BAD_CHECKSUM",
2364         "NMI_INTERRUPT_WDG",
2365         "SYSASSERT",
2366         "FATAL_ERROR",
2367         "BAD_COMMAND",
2368         "HW_ERROR_TUNE_LOCK",
2369         "HW_ERROR_TEMPERATURE",
2370         "ILLEGAL_CHAN_FREQ",
2371         "VCC_NOT_STABLE",
2372         "FH_ERROR",
2373         "NMI_INTERRUPT_HOST",
2374         "NMI_INTERRUPT_ACTION_PT",
2375         "NMI_INTERRUPT_UNKNOWN",
2376         "UCODE_VERSION_MISMATCH",
2377         "HW_ERROR_ABS_LOCK",
2378         "HW_ERROR_CAL_LOCK_FAIL",
2379         "NMI_INTERRUPT_INST_ACTION_PT",
2380         "NMI_INTERRUPT_DATA_ACTION_PT",
2381         "NMI_TRM_HW_ER",
2382         "NMI_INTERRUPT_TRM",
2383         "NMI_INTERRUPT_BREAK_POINT"
2384         "DEBUG_0",
2385         "DEBUG_1",
2386         "DEBUG_2",
2387         "DEBUG_3",
2388 };
2389
2390 static struct { char *name; u8 num; } advanced_lookup[] = {
2391         { "NMI_INTERRUPT_WDG", 0x34 },
2392         { "SYSASSERT", 0x35 },
2393         { "UCODE_VERSION_MISMATCH", 0x37 },
2394         { "BAD_COMMAND", 0x38 },
2395         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
2396         { "FATAL_ERROR", 0x3D },
2397         { "NMI_TRM_HW_ERR", 0x46 },
2398         { "NMI_INTERRUPT_TRM", 0x4C },
2399         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
2400         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
2401         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
2402         { "NMI_INTERRUPT_HOST", 0x66 },
2403         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
2404         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
2405         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
2406         { "ADVANCED_SYSASSERT", 0 },
2407 };
2408
2409 static const char *desc_lookup(u32 num)
2410 {
2411         int i;
2412         int max = ARRAY_SIZE(desc_lookup_text);
2413
2414         if (num < max)
2415                 return desc_lookup_text[num];
2416
2417         max = ARRAY_SIZE(advanced_lookup) - 1;
2418         for (i = 0; i < max; i++) {
2419                 if (advanced_lookup[i].num == num)
2420                         break;;
2421         }
2422         return advanced_lookup[i].name;
2423 }
2424
2425 #define ERROR_START_OFFSET  (1 * sizeof(u32))
2426 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
2427
2428 void iwl_dump_nic_error_log(struct iwl_priv *priv)
2429 {
2430         u32 data2, line;
2431         u32 desc, time, count, base, data1;
2432         u32 blink1, blink2, ilink1, ilink2;
2433         u32 pc, hcmd;
2434
2435         if (priv->ucode_type == UCODE_INIT) {
2436                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2437                 if (!base)
2438                         base = priv->_agn.init_errlog_ptr;
2439         } else {
2440                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2441                 if (!base)
2442                         base = priv->_agn.inst_errlog_ptr;
2443         }
2444
2445         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2446                 IWL_ERR(priv,
2447                         "Not valid error log pointer 0x%08X for %s uCode\n",
2448                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2449                 return;
2450         }
2451
2452         count = iwl_read_targ_mem(priv, base);
2453
2454         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2455                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2456                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2457                         priv->status, count);
2458         }
2459
2460         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2461         priv->isr_stats.err_code = desc;
2462         pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2463         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2464         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2465         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2466         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2467         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2468         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2469         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2470         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2471         hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2472
2473         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
2474                                       blink1, blink2, ilink1, ilink2);
2475
2476         IWL_ERR(priv, "Desc                                  Time       "
2477                 "data1      data2      line\n");
2478         IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2479                 desc_lookup(desc), desc, time, data1, data2, line);
2480         IWL_ERR(priv, "pc      blink1  blink2  ilink1  ilink2  hcmd\n");
2481         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2482                 pc, blink1, blink2, ilink1, ilink2, hcmd);
2483 }
2484
2485 #define EVENT_START_OFFSET  (4 * sizeof(u32))
2486
2487 /**
2488  * iwl_print_event_log - Dump error event log to syslog
2489  *
2490  */
2491 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
2492                                u32 num_events, u32 mode,
2493                                int pos, char **buf, size_t bufsz)
2494 {
2495         u32 i;
2496         u32 base;       /* SRAM byte address of event log header */
2497         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2498         u32 ptr;        /* SRAM byte address of log data */
2499         u32 ev, time, data; /* event log data */
2500         unsigned long reg_flags;
2501
2502         if (num_events == 0)
2503                 return pos;
2504
2505         if (priv->ucode_type == UCODE_INIT) {
2506                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2507                 if (!base)
2508                         base = priv->_agn.init_evtlog_ptr;
2509         } else {
2510                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2511                 if (!base)
2512                         base = priv->_agn.inst_evtlog_ptr;
2513         }
2514
2515         if (mode == 0)
2516                 event_size = 2 * sizeof(u32);
2517         else
2518                 event_size = 3 * sizeof(u32);
2519
2520         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2521
2522         /* Make sure device is powered up for SRAM reads */
2523         spin_lock_irqsave(&priv->reg_lock, reg_flags);
2524         iwl_grab_nic_access(priv);
2525
2526         /* Set starting address; reads will auto-increment */
2527         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
2528         rmb();
2529
2530         /* "time" is actually "data" for mode 0 (no timestamp).
2531         * place event id # at far right for easier visual parsing. */
2532         for (i = 0; i < num_events; i++) {
2533                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2534                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2535                 if (mode == 0) {
2536                         /* data, ev */
2537                         if (bufsz) {
2538                                 pos += scnprintf(*buf + pos, bufsz - pos,
2539                                                 "EVT_LOG:0x%08x:%04u\n",
2540                                                 time, ev);
2541                         } else {
2542                                 trace_iwlwifi_dev_ucode_event(priv, 0,
2543                                         time, ev);
2544                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2545                                         time, ev);
2546                         }
2547                 } else {
2548                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2549                         if (bufsz) {
2550                                 pos += scnprintf(*buf + pos, bufsz - pos,
2551                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
2552                                                  time, data, ev);
2553                         } else {
2554                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2555                                         time, data, ev);
2556                                 trace_iwlwifi_dev_ucode_event(priv, time,
2557                                         data, ev);
2558                         }
2559                 }
2560         }
2561
2562         /* Allow device to power down */
2563         iwl_release_nic_access(priv);
2564         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
2565         return pos;
2566 }
2567
2568 /**
2569  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2570  */
2571 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2572                                     u32 num_wraps, u32 next_entry,
2573                                     u32 size, u32 mode,
2574                                     int pos, char **buf, size_t bufsz)
2575 {
2576         /*
2577          * display the newest DEFAULT_LOG_ENTRIES entries
2578          * i.e the entries just before the next ont that uCode would fill.
2579          */
2580         if (num_wraps) {
2581                 if (next_entry < size) {
2582                         pos = iwl_print_event_log(priv,
2583                                                 capacity - (size - next_entry),
2584                                                 size - next_entry, mode,
2585                                                 pos, buf, bufsz);
2586                         pos = iwl_print_event_log(priv, 0,
2587                                                   next_entry, mode,
2588                                                   pos, buf, bufsz);
2589                 } else
2590                         pos = iwl_print_event_log(priv, next_entry - size,
2591                                                   size, mode, pos, buf, bufsz);
2592         } else {
2593                 if (next_entry < size) {
2594                         pos = iwl_print_event_log(priv, 0, next_entry,
2595                                                   mode, pos, buf, bufsz);
2596                 } else {
2597                         pos = iwl_print_event_log(priv, next_entry - size,
2598                                                   size, mode, pos, buf, bufsz);
2599                 }
2600         }
2601         return pos;
2602 }
2603
2604 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2605
2606 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2607                             char **buf, bool display)
2608 {
2609         u32 base;       /* SRAM byte address of event log header */
2610         u32 capacity;   /* event log capacity in # entries */
2611         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2612         u32 num_wraps;  /* # times uCode wrapped to top of log */
2613         u32 next_entry; /* index of next entry to be written by uCode */
2614         u32 size;       /* # entries that we'll print */
2615         u32 logsize;
2616         int pos = 0;
2617         size_t bufsz = 0;
2618
2619         if (priv->ucode_type == UCODE_INIT) {
2620                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2621                 logsize = priv->_agn.init_evtlog_size;
2622                 if (!base)
2623                         base = priv->_agn.init_evtlog_ptr;
2624         } else {
2625                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2626                 logsize = priv->_agn.inst_evtlog_size;
2627                 if (!base)
2628                         base = priv->_agn.inst_evtlog_ptr;
2629         }
2630
2631         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2632                 IWL_ERR(priv,
2633                         "Invalid event log pointer 0x%08X for %s uCode\n",
2634                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2635                 return -EINVAL;
2636         }
2637
2638         /* event log header */
2639         capacity = iwl_read_targ_mem(priv, base);
2640         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2641         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2642         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2643
2644         if (capacity > logsize) {
2645                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2646                         capacity, logsize);
2647                 capacity = logsize;
2648         }
2649
2650         if (next_entry > logsize) {
2651                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2652                         next_entry, logsize);
2653                 next_entry = logsize;
2654         }
2655
2656         size = num_wraps ? capacity : next_entry;
2657
2658         /* bail out if nothing in log */
2659         if (size == 0) {
2660                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2661                 return pos;
2662         }
2663
2664         /* enable/disable bt channel announcement */
2665         priv->bt_ch_announce = iwlagn_bt_ch_announce;
2666
2667 #ifdef CONFIG_IWLWIFI_DEBUG
2668         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2669                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2670                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2671 #else
2672         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2673                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2674 #endif
2675         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2676                 size);
2677
2678 #ifdef CONFIG_IWLWIFI_DEBUG
2679         if (display) {
2680                 if (full_log)
2681                         bufsz = capacity * 48;
2682                 else
2683                         bufsz = size * 48;
2684                 *buf = kmalloc(bufsz, GFP_KERNEL);
2685                 if (!*buf)
2686                         return -ENOMEM;
2687         }
2688         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2689                 /*
2690                  * if uCode has wrapped back to top of log,
2691                  * start at the oldest entry,
2692                  * i.e the next one that uCode would fill.
2693                  */
2694                 if (num_wraps)
2695                         pos = iwl_print_event_log(priv, next_entry,
2696                                                 capacity - next_entry, mode,
2697                                                 pos, buf, bufsz);
2698                 /* (then/else) start at top of log */
2699                 pos = iwl_print_event_log(priv, 0,
2700                                           next_entry, mode, pos, buf, bufsz);
2701         } else
2702                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2703                                                 next_entry, size, mode,
2704                                                 pos, buf, bufsz);
2705 #else
2706         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2707                                         next_entry, size, mode,
2708                                         pos, buf, bufsz);
2709 #endif
2710         return pos;
2711 }
2712
2713 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2714 {
2715         struct iwl_ct_kill_config cmd;
2716         struct iwl_ct_kill_throttling_config adv_cmd;
2717         unsigned long flags;
2718         int ret = 0;
2719
2720         spin_lock_irqsave(&priv->lock, flags);
2721         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2722                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2723         spin_unlock_irqrestore(&priv->lock, flags);
2724         priv->thermal_throttle.ct_kill_toggle = false;
2725
2726         if (priv->cfg->base_params->support_ct_kill_exit) {
2727                 adv_cmd.critical_temperature_enter =
2728                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2729                 adv_cmd.critical_temperature_exit =
2730                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2731
2732                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2733                                        sizeof(adv_cmd), &adv_cmd);
2734                 if (ret)
2735                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2736                 else
2737                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2738                                         "succeeded, "
2739                                         "critical temperature enter is %d,"
2740                                         "exit is %d\n",
2741                                        priv->hw_params.ct_kill_threshold,
2742                                        priv->hw_params.ct_kill_exit_threshold);
2743         } else {
2744                 cmd.critical_temperature_R =
2745                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2746
2747                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2748                                        sizeof(cmd), &cmd);
2749                 if (ret)
2750                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2751                 else
2752                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2753                                         "succeeded, "
2754                                         "critical temperature is %d\n",
2755                                         priv->hw_params.ct_kill_threshold);
2756         }
2757 }
2758
2759 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
2760 {
2761         struct iwl_calib_cfg_cmd calib_cfg_cmd;
2762         struct iwl_host_cmd cmd = {
2763                 .id = CALIBRATION_CFG_CMD,
2764                 .len = sizeof(struct iwl_calib_cfg_cmd),
2765                 .data = &calib_cfg_cmd,
2766         };
2767
2768         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
2769         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
2770         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
2771
2772         return iwl_send_cmd(priv, &cmd);
2773 }
2774
2775
2776 /**
2777  * iwl_alive_start - called after REPLY_ALIVE notification received
2778  *                   from protocol/runtime uCode (initialization uCode's
2779  *                   Alive gets handled by iwl_init_alive_start()).
2780  */
2781 static void iwl_alive_start(struct iwl_priv *priv)
2782 {
2783         int ret = 0;
2784         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2785
2786         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2787
2788         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2789                 /* We had an error bringing up the hardware, so take it
2790                  * all the way back down so we can try again */
2791                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2792                 goto restart;
2793         }
2794
2795         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2796          * This is a paranoid check, because we would not have gotten the
2797          * "runtime" alive if code weren't properly loaded.  */
2798         if (iwl_verify_ucode(priv)) {
2799                 /* Runtime instruction load was bad;
2800                  * take it all the way back down so we can try again */
2801                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2802                 goto restart;
2803         }
2804
2805         ret = priv->cfg->ops->lib->alive_notify(priv);
2806         if (ret) {
2807                 IWL_WARN(priv,
2808                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
2809                 goto restart;
2810         }
2811
2812
2813         /* After the ALIVE response, we can send host commands to the uCode */
2814         set_bit(STATUS_ALIVE, &priv->status);
2815
2816         if (priv->cfg->ops->lib->recover_from_tx_stall) {
2817                 /* Enable timer to monitor the driver queues */
2818                 mod_timer(&priv->monitor_recover,
2819                         jiffies +
2820                         msecs_to_jiffies(
2821                           priv->cfg->base_params->monitor_recover_period));
2822         }
2823
2824         if (iwl_is_rfkill(priv))
2825                 return;
2826
2827         /* download priority table before any calibration request */
2828         if (priv->cfg->bt_params &&
2829             priv->cfg->bt_params->advanced_bt_coexist) {
2830                 /* Configure Bluetooth device coexistence support */
2831                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2832                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2833                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2834                 priv->cfg->ops->hcmd->send_bt_config(priv);
2835                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2836                 iwlagn_send_prio_tbl(priv);
2837
2838                 /* FIXME: w/a to force change uCode BT state machine */
2839                 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2840                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2841                 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2842                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2843         }
2844         if (priv->hw_params.calib_rt_cfg)
2845                 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2846
2847         ieee80211_wake_queues(priv->hw);
2848
2849         priv->active_rate = IWL_RATES_MASK;
2850
2851         /* Configure Tx antenna selection based on H/W config */
2852         if (priv->cfg->ops->hcmd->set_tx_ant)
2853                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2854
2855         if (iwl_is_associated_ctx(ctx)) {
2856                 struct iwl_rxon_cmd *active_rxon =
2857                                 (struct iwl_rxon_cmd *)&ctx->active;
2858                 /* apply any changes in staging */
2859                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2860                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2861         } else {
2862                 struct iwl_rxon_context *tmp;
2863                 /* Initialize our rx_config data */
2864                 for_each_context(priv, tmp)
2865                         iwl_connection_init_rx_config(priv, tmp);
2866
2867                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2868                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2869         }
2870
2871         if (priv->cfg->bt_params &&
2872             !priv->cfg->bt_params->advanced_bt_coexist) {
2873                 /* Configure Bluetooth device coexistence support */
2874                 priv->cfg->ops->hcmd->send_bt_config(priv);
2875         }
2876
2877         iwl_reset_run_time_calib(priv);
2878
2879         /* Configure the adapter for unassociated operation */
2880         iwlcore_commit_rxon(priv, ctx);
2881
2882         /* At this point, the NIC is initialized and operational */
2883         iwl_rf_kill_ct_config(priv);
2884
2885         iwl_leds_init(priv);
2886
2887         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2888         set_bit(STATUS_READY, &priv->status);
2889         wake_up_interruptible(&priv->wait_command_queue);
2890
2891         iwl_power_update_mode(priv, true);
2892         IWL_DEBUG_INFO(priv, "Updated power mode\n");
2893
2894
2895         return;
2896
2897  restart:
2898         queue_work(priv->workqueue, &priv->restart);
2899 }
2900
2901 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2902
2903 static void __iwl_down(struct iwl_priv *priv)
2904 {
2905         unsigned long flags;
2906         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2907
2908         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2909
2910         iwl_scan_cancel_timeout(priv, 200);
2911
2912         exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2913
2914         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2915          * to prevent rearm timer */
2916         if (priv->cfg->ops->lib->recover_from_tx_stall)
2917                 del_timer_sync(&priv->monitor_recover);
2918
2919         iwl_clear_ucode_stations(priv, NULL);
2920         iwl_dealloc_bcast_stations(priv);
2921         iwl_clear_driver_stations(priv);
2922
2923         /* reset BT coex data */
2924         priv->bt_status = 0;
2925         if (priv->cfg->bt_params)
2926                 priv->bt_traffic_load =
2927                          priv->cfg->bt_params->bt_init_traffic_load;
2928         else
2929                 priv->bt_traffic_load = 0;
2930         priv->bt_sco_active = false;
2931         priv->bt_full_concurrent = false;
2932         priv->bt_ci_compliance = 0;
2933
2934         /* Unblock any waiting calls */
2935         wake_up_interruptible_all(&priv->wait_command_queue);
2936
2937         /* Wipe out the EXIT_PENDING status bit if we are not actually
2938          * exiting the module */
2939         if (!exit_pending)
2940                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2941
2942         /* stop and reset the on-board processor */
2943         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2944
2945         /* tell the device to stop sending interrupts */
2946         spin_lock_irqsave(&priv->lock, flags);
2947         iwl_disable_interrupts(priv);
2948         spin_unlock_irqrestore(&priv->lock, flags);
2949         iwl_synchronize_irq(priv);
2950
2951         if (priv->mac80211_registered)
2952                 ieee80211_stop_queues(priv->hw);
2953
2954         /* If we have not previously called iwl_init() then
2955          * clear all bits but the RF Kill bit and return */
2956         if (!iwl_is_init(priv)) {
2957                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2958                                         STATUS_RF_KILL_HW |
2959                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2960                                         STATUS_GEO_CONFIGURED |
2961                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2962                                         STATUS_EXIT_PENDING;
2963                 goto exit;
2964         }
2965
2966         /* ...otherwise clear out all the status bits but the RF Kill
2967          * bit and continue taking the NIC down. */
2968         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2969                                 STATUS_RF_KILL_HW |
2970                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2971                                 STATUS_GEO_CONFIGURED |
2972                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2973                                 STATUS_FW_ERROR |
2974                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2975                                 STATUS_EXIT_PENDING;
2976
2977         /* device going down, Stop using ICT table */
2978         iwl_disable_ict(priv);
2979
2980         iwlagn_txq_ctx_stop(priv);
2981         iwlagn_rxq_stop(priv);
2982
2983         /* Power-down device's busmaster DMA clocks */
2984         iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2985         udelay(5);
2986
2987         /* Make sure (redundant) we've released our request to stay awake */
2988         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2989
2990         /* Stop the device, and put it in low power state */
2991         iwl_apm_stop(priv);
2992
2993  exit:
2994         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2995
2996         dev_kfree_skb(priv->beacon_skb);
2997         priv->beacon_skb = NULL;
2998
2999         /* clear out any free frames */
3000         iwl_clear_free_frames(priv);
3001 }
3002
3003 static void iwl_down(struct iwl_priv *priv)
3004 {
3005         mutex_lock(&priv->mutex);
3006         __iwl_down(priv);
3007         mutex_unlock(&priv->mutex);
3008
3009         iwl_cancel_deferred_work(priv);
3010 }
3011
3012 #define HW_READY_TIMEOUT (50)
3013
3014 static int iwl_set_hw_ready(struct iwl_priv *priv)
3015 {
3016         int ret = 0;
3017
3018         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3019                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
3020
3021         /* See if we got it */
3022         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3023                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3024                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3025                                 HW_READY_TIMEOUT);
3026         if (ret != -ETIMEDOUT)
3027                 priv->hw_ready = true;
3028         else
3029                 priv->hw_ready = false;
3030
3031         IWL_DEBUG_INFO(priv, "hardware %s\n",
3032                       (priv->hw_ready == 1) ? "ready" : "not ready");
3033         return ret;
3034 }
3035
3036 static int iwl_prepare_card_hw(struct iwl_priv *priv)
3037 {
3038         int ret = 0;
3039
3040         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
3041
3042         ret = iwl_set_hw_ready(priv);
3043         if (priv->hw_ready)
3044                 return ret;
3045
3046         /* If HW is not ready, prepare the conditions to check again */
3047         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3048                         CSR_HW_IF_CONFIG_REG_PREPARE);
3049
3050         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3051                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
3052                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
3053
3054         /* HW should be ready by now, check again. */
3055         if (ret != -ETIMEDOUT)
3056                 iwl_set_hw_ready(priv);
3057
3058         return ret;
3059 }
3060
3061 #define MAX_HW_RESTARTS 5
3062
3063 static int __iwl_up(struct iwl_priv *priv)
3064 {
3065         struct iwl_rxon_context *ctx;
3066         int i;
3067         int ret;
3068
3069         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3070                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3071                 return -EIO;
3072         }
3073
3074         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3075                 IWL_ERR(priv, "ucode not available for device bringup\n");
3076                 return -EIO;
3077         }
3078
3079         for_each_context(priv, ctx) {
3080                 ret = iwlagn_alloc_bcast_station(priv, ctx);
3081                 if (ret) {
3082                         iwl_dealloc_bcast_stations(priv);
3083                         return ret;
3084                 }
3085         }
3086
3087         iwl_prepare_card_hw(priv);
3088
3089         if (!priv->hw_ready) {
3090                 IWL_WARN(priv, "Exit HW not ready\n");
3091                 return -EIO;
3092         }
3093
3094         /* If platform's RF_KILL switch is NOT set to KILL */
3095         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3096                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3097         else
3098                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3099
3100         if (iwl_is_rfkill(priv)) {
3101                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
3102
3103                 iwl_enable_interrupts(priv);
3104                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3105                 return 0;
3106         }
3107
3108         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3109
3110         /* must be initialised before iwl_hw_nic_init */
3111         if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
3112                 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
3113         else
3114                 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
3115
3116         ret = iwlagn_hw_nic_init(priv);
3117         if (ret) {
3118                 IWL_ERR(priv, "Unable to init nic\n");
3119                 return ret;
3120         }
3121
3122         /* make sure rfkill handshake bits are cleared */
3123         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3124         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3125                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3126
3127         /* clear (again), then enable host interrupts */
3128         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3129         iwl_enable_interrupts(priv);
3130
3131         /* really make sure rfkill handshake bits are cleared */
3132         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3133         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3134
3135         /* Copy original ucode data image from disk into backup cache.
3136          * This will be used to initialize the on-board processor's
3137          * data SRAM for a clean start when the runtime program first loads. */
3138         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3139                priv->ucode_data.len);
3140
3141         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3142
3143                 /* load bootstrap state machine,
3144                  * load bootstrap program into processor's memory,
3145                  * prepare to load the "initialize" uCode */
3146                 ret = priv->cfg->ops->lib->load_ucode(priv);
3147
3148                 if (ret) {
3149                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
3150                                 ret);
3151                         continue;
3152                 }
3153
3154                 /* start card; "initialize" will load runtime ucode */
3155                 iwl_nic_start(priv);
3156
3157                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3158
3159                 return 0;
3160         }
3161
3162         set_bit(STATUS_EXIT_PENDING, &priv->status);
3163         __iwl_down(priv);
3164         clear_bit(STATUS_EXIT_PENDING, &priv->status);
3165
3166         /* tried to restart and config the device for as long as our
3167          * patience could withstand */
3168         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3169         return -EIO;
3170 }
3171
3172
3173 /*****************************************************************************
3174  *
3175  * Workqueue callbacks
3176  *
3177  *****************************************************************************/
3178
3179 static void iwl_bg_init_alive_start(struct work_struct *data)
3180 {
3181         struct iwl_priv *priv =
3182             container_of(data, struct iwl_priv, init_alive_start.work);
3183
3184         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3185                 return;
3186
3187         mutex_lock(&priv->mutex);
3188         priv->cfg->ops->lib->init_alive_start(priv);
3189         mutex_unlock(&priv->mutex);
3190 }
3191
3192 static void iwl_bg_alive_start(struct work_struct *data)
3193 {
3194         struct iwl_priv *priv =
3195             container_of(data, struct iwl_priv, alive_start.work);
3196
3197         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3198                 return;
3199
3200         /* enable dram interrupt */
3201         iwl_reset_ict(priv);
3202
3203         mutex_lock(&priv->mutex);
3204         iwl_alive_start(priv);
3205         mutex_unlock(&priv->mutex);
3206 }
3207
3208 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3209 {
3210         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3211                         run_time_calib_work);
3212
3213         mutex_lock(&priv->mutex);
3214
3215         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3216             test_bit(STATUS_SCANNING, &priv->status)) {
3217                 mutex_unlock(&priv->mutex);
3218                 return;
3219         }
3220
3221         if (priv->start_calib) {
3222                 if (priv->cfg->bt_params &&
3223                     priv->cfg->bt_params->bt_statistics) {
3224                         iwl_chain_noise_calibration(priv,
3225                                         (void *)&priv->_agn.statistics_bt);
3226                         iwl_sensitivity_calibration(priv,
3227                                         (void *)&priv->_agn.statistics_bt);
3228                 } else {
3229                         iwl_chain_noise_calibration(priv,
3230                                         (void *)&priv->_agn.statistics);
3231                         iwl_sensitivity_calibration(priv,
3232                                         (void *)&priv->_agn.statistics);
3233                 }
3234         }
3235
3236         mutex_unlock(&priv->mutex);
3237 }
3238
3239 static void iwl_bg_restart(struct work_struct *data)
3240 {
3241         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3242
3243         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3244                 return;
3245
3246         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3247                 struct iwl_rxon_context *ctx;
3248                 bool bt_sco, bt_full_concurrent;
3249                 u8 bt_ci_compliance;
3250                 u8 bt_load;
3251                 u8 bt_status;
3252
3253                 mutex_lock(&priv->mutex);
3254                 for_each_context(priv, ctx)
3255                         ctx->vif = NULL;
3256                 priv->is_open = 0;
3257
3258                 /*
3259                  * __iwl_down() will clear the BT status variables,
3260                  * which is correct, but when we restart we really
3261                  * want to keep them so restore them afterwards.
3262                  *
3263                  * The restart process will later pick them up and
3264                  * re-configure the hw when we reconfigure the BT
3265                  * command.
3266                  */
3267                 bt_sco = priv->bt_sco_active;
3268                 bt_full_concurrent = priv->bt_full_concurrent;
3269                 bt_ci_compliance = priv->bt_ci_compliance;
3270                 bt_load = priv->bt_traffic_load;
3271                 bt_status = priv->bt_status;
3272
3273                 __iwl_down(priv);
3274
3275                 priv->bt_sco_active = bt_sco;
3276                 priv->bt_full_concurrent = bt_full_concurrent;
3277                 priv->bt_ci_compliance = bt_ci_compliance;
3278                 priv->bt_traffic_load = bt_load;
3279                 priv->bt_status = bt_status;
3280
3281                 mutex_unlock(&priv->mutex);
3282                 iwl_cancel_deferred_work(priv);
3283                 ieee80211_restart_hw(priv->hw);
3284         } else {
3285                 iwl_down(priv);
3286
3287                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3288                         return;
3289
3290                 mutex_lock(&priv->mutex);
3291                 __iwl_up(priv);
3292                 mutex_unlock(&priv->mutex);
3293         }
3294 }
3295
3296 static void iwl_bg_rx_replenish(struct work_struct *data)
3297 {
3298         struct iwl_priv *priv =
3299             container_of(data, struct iwl_priv, rx_replenish);
3300
3301         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3302                 return;
3303
3304         mutex_lock(&priv->mutex);
3305         iwlagn_rx_replenish(priv);
3306         mutex_unlock(&priv->mutex);
3307 }
3308
3309 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3310
3311 void iwl_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3312 {
3313         struct iwl_rxon_context *ctx;
3314         struct ieee80211_conf *conf = NULL;
3315         int ret = 0;
3316
3317         if (!vif || !priv->is_open)
3318                 return;
3319
3320         ctx = iwl_rxon_ctx_from_vif(vif);
3321
3322         if (vif->type == NL80211_IFTYPE_AP) {
3323                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3324                 return;
3325         }
3326
3327         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3328                 return;
3329
3330         iwl_scan_cancel_timeout(priv, 200);
3331
3332         conf = ieee80211_get_hw_conf(priv->hw);
3333
3334         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3335         iwlcore_commit_rxon(priv, ctx);
3336
3337         ret = iwl_send_rxon_timing(priv, ctx);
3338         if (ret)
3339                 IWL_WARN(priv, "RXON timing - "
3340                             "Attempting to continue.\n");
3341
3342         ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3343
3344         iwl_set_rxon_ht(priv, &priv->current_ht_config);
3345
3346         if (priv->cfg->ops->hcmd->set_rxon_chain)
3347                 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3348
3349         ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3350
3351         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3352                         vif->bss_conf.aid, vif->bss_conf.beacon_int);
3353
3354         if (vif->bss_conf.use_short_preamble)
3355                 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3356         else
3357                 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3358
3359         if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3360                 if (vif->bss_conf.use_short_slot)
3361                         ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3362                 else
3363                         ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3364         }
3365
3366         iwlcore_commit_rxon(priv, ctx);
3367
3368         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3369                         vif->bss_conf.aid, ctx->active.bssid_addr);
3370
3371         switch (vif->type) {
3372         case NL80211_IFTYPE_STATION:
3373                 break;
3374         case NL80211_IFTYPE_ADHOC:
3375                 iwl_send_beacon_cmd(priv);
3376                 break;
3377         default:
3378                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3379                           __func__, vif->type);
3380                 break;
3381         }
3382
3383         /* the chain noise calibration will enabled PM upon completion
3384          * If chain noise has already been run, then we need to enable
3385          * power management here */
3386         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
3387                 iwl_power_update_mode(priv, false);
3388
3389         /* Enable Rx differential gain and sensitivity calibrations */
3390         iwl_chain_noise_reset(priv);
3391         priv->start_calib = 1;
3392
3393 }
3394
3395 /*****************************************************************************
3396  *
3397  * mac80211 entry point functions
3398  *
3399  *****************************************************************************/
3400
3401 #define UCODE_READY_TIMEOUT     (4 * HZ)
3402
3403 /*
3404  * Not a mac80211 entry point function, but it fits in with all the
3405  * other mac80211 functions grouped here.
3406  */
3407 static int iwl_mac_setup_register(struct iwl_priv *priv,
3408                                   struct iwlagn_ucode_capabilities *capa)
3409 {
3410         int ret;
3411         struct ieee80211_hw *hw = priv->hw;
3412         struct iwl_rxon_context *ctx;
3413
3414         hw->rate_control_algorithm = "iwl-agn-rs";
3415
3416         /* Tell mac80211 our characteristics */
3417         hw->flags = IEEE80211_HW_SIGNAL_DBM |
3418                     IEEE80211_HW_AMPDU_AGGREGATION |
3419                     IEEE80211_HW_NEED_DTIM_PERIOD |
3420                     IEEE80211_HW_SPECTRUM_MGMT;
3421
3422         if (!priv->cfg->base_params->broken_powersave)
3423                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3424                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3425
3426         if (priv->cfg->sku & IWL_SKU_N)
3427                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
3428                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
3429
3430         hw->sta_data_size = sizeof(struct iwl_station_priv);
3431         hw->vif_data_size = sizeof(struct iwl_vif_priv);
3432
3433         for_each_context(priv, ctx) {
3434                 hw->wiphy->interface_modes |= ctx->interface_modes;
3435                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
3436         }
3437
3438         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3439                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
3440
3441         /*
3442          * For now, disable PS by default because it affects
3443          * RX performance significantly.
3444          */
3445         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3446
3447         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3448         /* we create the 802.11 header and a zero-length SSID element */
3449         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3450
3451         /* Default value; 4 EDCA QOS priorities */
3452         hw->queues = 4;
3453
3454         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
3455
3456         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3457                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3458                         &priv->bands[IEEE80211_BAND_2GHZ];
3459         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3460                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3461                         &priv->bands[IEEE80211_BAND_5GHZ];
3462
3463         ret = ieee80211_register_hw(priv->hw);
3464         if (ret) {
3465                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3466                 return ret;
3467         }
3468         priv->mac80211_registered = 1;
3469
3470         return 0;
3471 }
3472
3473
3474 static int iwl_mac_start(struct ieee80211_hw *hw)
3475 {
3476         struct iwl_priv *priv = hw->priv;
3477         int ret;
3478
3479         IWL_DEBUG_MAC80211(priv, "enter\n");
3480
3481         /* we should be verifying the device is ready to be opened */
3482         mutex_lock(&priv->mutex);
3483         ret = __iwl_up(priv);
3484         mutex_unlock(&priv->mutex);
3485
3486         if (ret)
3487                 return ret;
3488
3489         if (iwl_is_rfkill(priv))
3490                 goto out;
3491
3492         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3493
3494         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3495          * mac80211 will not be run successfully. */
3496         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3497                         test_bit(STATUS_READY, &priv->status),
3498                         UCODE_READY_TIMEOUT);
3499         if (!ret) {
3500                 if (!test_bit(STATUS_READY, &priv->status)) {
3501                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3502                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3503                         return -ETIMEDOUT;
3504                 }
3505         }
3506
3507         iwl_led_start(priv);
3508
3509 out:
3510         priv->is_open = 1;
3511         IWL_DEBUG_MAC80211(priv, "leave\n");
3512         return 0;
3513 }
3514
3515 static void iwl_mac_stop(struct ieee80211_hw *hw)
3516 {
3517         struct iwl_priv *priv = hw->priv;
3518
3519         IWL_DEBUG_MAC80211(priv, "enter\n");
3520
3521         if (!priv->is_open)
3522                 return;
3523
3524         priv->is_open = 0;
3525
3526         iwl_down(priv);
3527
3528         flush_workqueue(priv->workqueue);
3529
3530         /* enable interrupts again in order to receive rfkill changes */
3531         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3532         iwl_enable_interrupts(priv);
3533
3534         IWL_DEBUG_MAC80211(priv, "leave\n");
3535 }
3536
3537 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3538 {
3539         struct iwl_priv *priv = hw->priv;
3540
3541         IWL_DEBUG_MACDUMP(priv, "enter\n");
3542
3543         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3544                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3545
3546         if (iwlagn_tx_skb(priv, skb))
3547                 dev_kfree_skb_any(skb);
3548
3549         IWL_DEBUG_MACDUMP(priv, "leave\n");
3550         return NETDEV_TX_OK;
3551 }
3552
3553 void iwl_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3554 {
3555         struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3556         int ret = 0;
3557
3558         lockdep_assert_held(&priv->mutex);
3559
3560         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3561                 return;
3562
3563         /* The following should be done only at AP bring up */
3564         if (!iwl_is_associated_ctx(ctx)) {
3565
3566                 /* RXON - unassoc (to set timing command) */
3567                 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3568                 iwlcore_commit_rxon(priv, ctx);
3569
3570                 /* RXON Timing */
3571                 ret = iwl_send_rxon_timing(priv, ctx);
3572                 if (ret)
3573                         IWL_WARN(priv, "RXON timing failed - "
3574                                         "Attempting to continue.\n");
3575
3576                 /* AP has all antennas */
3577                 priv->chain_noise_data.active_chains =
3578                         priv->hw_params.valid_rx_ant;
3579                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3580                 if (priv->cfg->ops->hcmd->set_rxon_chain)
3581                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3582
3583                 ctx->staging.assoc_id = 0;
3584
3585                 if (vif->bss_conf.use_short_preamble)
3586                         ctx->staging.flags |=
3587                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3588                 else
3589                         ctx->staging.flags &=
3590                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3591
3592                 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3593                         if (vif->bss_conf.use_short_slot)
3594                                 ctx->staging.flags |=
3595                                         RXON_FLG_SHORT_SLOT_MSK;
3596                         else
3597                                 ctx->staging.flags &=
3598                                         ~RXON_FLG_SHORT_SLOT_MSK;
3599                 }
3600                 /* need to send beacon cmd before committing assoc RXON! */
3601                 iwl_send_beacon_cmd(priv);
3602                 /* restore RXON assoc */
3603                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3604                 iwlcore_commit_rxon(priv, ctx);
3605         }
3606         iwl_send_beacon_cmd(priv);
3607
3608         /* FIXME - we need to add code here to detect a totally new
3609          * configuration, reset the AP, unassoc, rxon timing, assoc,
3610          * clear sta table, add BCAST sta... */
3611 }
3612
3613 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3614                                     struct ieee80211_vif *vif,
3615                                     struct ieee80211_key_conf *keyconf,
3616                                     struct ieee80211_sta *sta,
3617                                     u32 iv32, u16 *phase1key)
3618 {
3619
3620         struct iwl_priv *priv = hw->priv;
3621         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3622
3623         IWL_DEBUG_MAC80211(priv, "enter\n");
3624
3625         iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3626                             iv32, phase1key);
3627
3628         IWL_DEBUG_MAC80211(priv, "leave\n");
3629 }
3630
3631 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3632                            struct ieee80211_vif *vif,
3633                            struct ieee80211_sta *sta,
3634                            struct ieee80211_key_conf *key)
3635 {
3636         struct iwl_priv *priv = hw->priv;
3637         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3638         struct iwl_rxon_context *ctx = vif_priv->ctx;
3639         int ret;
3640         u8 sta_id;
3641         bool is_default_wep_key = false;
3642
3643         IWL_DEBUG_MAC80211(priv, "enter\n");
3644
3645         if (priv->cfg->mod_params->sw_crypto) {
3646                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3647                 return -EOPNOTSUPP;
3648         }
3649
3650         sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3651         if (sta_id == IWL_INVALID_STATION)
3652                 return -EINVAL;
3653
3654         mutex_lock(&priv->mutex);
3655         iwl_scan_cancel_timeout(priv, 100);
3656
3657         /*
3658          * If we are getting WEP group key and we didn't receive any key mapping
3659          * so far, we are in legacy wep mode (group key only), otherwise we are
3660          * in 1X mode.
3661          * In legacy wep mode, we use another host command to the uCode.
3662          */
3663         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3664              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3665             !sta) {
3666                 if (cmd == SET_KEY)
3667                         is_default_wep_key = !ctx->key_mapping_keys;
3668                 else
3669                         is_default_wep_key =
3670                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3671         }
3672
3673         switch (cmd) {
3674         case SET_KEY:
3675                 if (is_default_wep_key)
3676                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
3677                 else
3678                         ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
3679                                                   key, sta_id);
3680
3681                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3682                 break;
3683         case DISABLE_KEY:
3684                 if (is_default_wep_key)
3685                         ret = iwl_remove_default_wep_key(priv, ctx, key);
3686                 else
3687                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
3688
3689                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3690                 break;
3691         default:
3692                 ret = -EINVAL;
3693         }
3694
3695         mutex_unlock(&priv->mutex);
3696         IWL_DEBUG_MAC80211(priv, "leave\n");
3697
3698         return ret;
3699 }
3700
3701 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3702                                 struct ieee80211_vif *vif,
3703                                 enum ieee80211_ampdu_mlme_action action,
3704                                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3705 {
3706         struct iwl_priv *priv = hw->priv;
3707         int ret = -EINVAL;
3708
3709         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
3710                      sta->addr, tid);
3711
3712         if (!(priv->cfg->sku & IWL_SKU_N))
3713                 return -EACCES;
3714
3715         mutex_lock(&priv->mutex);
3716
3717         switch (action) {
3718         case IEEE80211_AMPDU_RX_START:
3719                 IWL_DEBUG_HT(priv, "start Rx\n");
3720                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
3721                 break;
3722         case IEEE80211_AMPDU_RX_STOP:
3723                 IWL_DEBUG_HT(priv, "stop Rx\n");
3724                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3725                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3726                         ret = 0;
3727                 break;
3728         case IEEE80211_AMPDU_TX_START:
3729                 IWL_DEBUG_HT(priv, "start Tx\n");
3730                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
3731                 if (ret == 0) {
3732                         priv->_agn.agg_tids_count++;
3733                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3734                                      priv->_agn.agg_tids_count);
3735                 }
3736                 break;
3737         case IEEE80211_AMPDU_TX_STOP:
3738                 IWL_DEBUG_HT(priv, "stop Tx\n");
3739                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
3740                 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
3741                         priv->_agn.agg_tids_count--;
3742                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3743                                      priv->_agn.agg_tids_count);
3744                 }
3745                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3746                         ret = 0;
3747                 if (priv->cfg->ht_params &&
3748                     priv->cfg->ht_params->use_rts_for_aggregation) {
3749                         struct iwl_station_priv *sta_priv =
3750                                 (void *) sta->drv_priv;
3751                         /*
3752                          * switch off RTS/CTS if it was previously enabled
3753                          */
3754
3755                         sta_priv->lq_sta.lq.general_params.flags &=
3756                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3757                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3758                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3759                 }
3760                 break;
3761         case IEEE80211_AMPDU_TX_OPERATIONAL:
3762                 if (priv->cfg->ht_params &&
3763                     priv->cfg->ht_params->use_rts_for_aggregation) {
3764                         struct iwl_station_priv *sta_priv =
3765                                 (void *) sta->drv_priv;
3766
3767                         /*
3768                          * switch to RTS/CTS if it is the prefer protection
3769                          * method for HT traffic
3770                          */
3771
3772                         sta_priv->lq_sta.lq.general_params.flags |=
3773                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3774                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3775                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3776                 }
3777                 ret = 0;
3778                 break;
3779         }
3780         mutex_unlock(&priv->mutex);
3781
3782         return ret;
3783 }
3784
3785 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
3786                                struct ieee80211_vif *vif,
3787                                enum sta_notify_cmd cmd,
3788                                struct ieee80211_sta *sta)
3789 {
3790         struct iwl_priv *priv = hw->priv;
3791         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3792         int sta_id;
3793
3794         switch (cmd) {
3795         case STA_NOTIFY_SLEEP:
3796                 WARN_ON(!sta_priv->client);
3797                 sta_priv->asleep = true;
3798                 if (atomic_read(&sta_priv->pending_frames) > 0)
3799                         ieee80211_sta_block_awake(hw, sta, true);
3800                 break;
3801         case STA_NOTIFY_AWAKE:
3802                 WARN_ON(!sta_priv->client);
3803                 if (!sta_priv->asleep)
3804                         break;
3805                 sta_priv->asleep = false;
3806                 sta_id = iwl_sta_id(sta);
3807                 if (sta_id != IWL_INVALID_STATION)
3808                         iwl_sta_modify_ps_wake(priv, sta_id);
3809                 break;
3810         default:
3811                 break;
3812         }
3813 }
3814
3815 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3816                               struct ieee80211_vif *vif,
3817                               struct ieee80211_sta *sta)
3818 {
3819         struct iwl_priv *priv = hw->priv;
3820         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3821         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3822         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3823         int ret;
3824         u8 sta_id;
3825
3826         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3827                         sta->addr);
3828         mutex_lock(&priv->mutex);
3829         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3830                         sta->addr);
3831         sta_priv->common.sta_id = IWL_INVALID_STATION;
3832
3833         atomic_set(&sta_priv->pending_frames, 0);
3834         if (vif->type == NL80211_IFTYPE_AP)
3835                 sta_priv->client = true;
3836
3837         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3838                                      is_ap, sta, &sta_id);
3839         if (ret) {
3840                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3841                         sta->addr, ret);
3842                 /* Should we return success if return code is EEXIST ? */
3843                 mutex_unlock(&priv->mutex);
3844                 return ret;
3845         }
3846
3847         sta_priv->common.sta_id = sta_id;
3848
3849         /* Initialize rate scaling */
3850         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3851                        sta->addr);
3852         iwl_rs_rate_init(priv, sta, sta_id);
3853         mutex_unlock(&priv->mutex);
3854
3855         return 0;
3856 }
3857
3858 static void iwl_mac_channel_switch(struct ieee80211_hw *hw,
3859                                    struct ieee80211_channel_switch *ch_switch)
3860 {
3861         struct iwl_priv *priv = hw->priv;
3862         const struct iwl_channel_info *ch_info;
3863         struct ieee80211_conf *conf = &hw->conf;
3864         struct ieee80211_channel *channel = ch_switch->channel;
3865         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3866         /*
3867          * MULTI-FIXME
3868          * When we add support for multiple interfaces, we need to
3869          * revisit this. The channel switch command in the device
3870          * only affects the BSS context, but what does that really
3871          * mean? And what if we get a CSA on the second interface?
3872          * This needs a lot of work.
3873          */
3874         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3875         u16 ch;
3876         unsigned long flags = 0;
3877
3878         IWL_DEBUG_MAC80211(priv, "enter\n");
3879
3880         if (iwl_is_rfkill(priv))
3881                 goto out_exit;
3882
3883         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3884             test_bit(STATUS_SCANNING, &priv->status))
3885                 goto out_exit;
3886
3887         if (!iwl_is_associated_ctx(ctx))
3888                 goto out_exit;
3889
3890         /* channel switch in progress */
3891         if (priv->switch_rxon.switch_in_progress == true)
3892                 goto out_exit;
3893
3894         mutex_lock(&priv->mutex);
3895         if (priv->cfg->ops->lib->set_channel_switch) {
3896
3897                 ch = channel->hw_value;
3898                 if (le16_to_cpu(ctx->active.channel) != ch) {
3899                         ch_info = iwl_get_channel_info(priv,
3900                                                        channel->band,
3901                                                        ch);
3902                         if (!is_channel_valid(ch_info)) {
3903                                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3904                                 goto out;
3905                         }
3906                         spin_lock_irqsave(&priv->lock, flags);
3907
3908                         priv->current_ht_config.smps = conf->smps_mode;
3909
3910                         /* Configure HT40 channels */
3911                         ctx->ht.enabled = conf_is_ht(conf);
3912                         if (ctx->ht.enabled) {
3913                                 if (conf_is_ht40_minus(conf)) {
3914                                         ctx->ht.extension_chan_offset =
3915                                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3916                                         ctx->ht.is_40mhz = true;
3917                                 } else if (conf_is_ht40_plus(conf)) {
3918                                         ctx->ht.extension_chan_offset =
3919                                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3920                                         ctx->ht.is_40mhz = true;
3921                                 } else {
3922                                         ctx->ht.extension_chan_offset =
3923                                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3924                                         ctx->ht.is_40mhz = false;
3925                                 }
3926                         } else
3927                                 ctx->ht.is_40mhz = false;
3928
3929                         if ((le16_to_cpu(ctx->staging.channel) != ch))
3930                                 ctx->staging.flags = 0;
3931
3932                         iwl_set_rxon_channel(priv, channel, ctx);
3933                         iwl_set_rxon_ht(priv, ht_conf);
3934                         iwl_set_flags_for_band(priv, ctx, channel->band,
3935                                                ctx->vif);
3936                         spin_unlock_irqrestore(&priv->lock, flags);
3937
3938                         iwl_set_rate(priv);
3939                         /*
3940                          * at this point, staging_rxon has the
3941                          * configuration for channel switch
3942                          */
3943                         if (priv->cfg->ops->lib->set_channel_switch(priv,
3944                                                                     ch_switch))
3945                                 priv->switch_rxon.switch_in_progress = false;
3946                 }
3947         }
3948 out:
3949         mutex_unlock(&priv->mutex);
3950 out_exit:
3951         if (!priv->switch_rxon.switch_in_progress)
3952                 ieee80211_chswitch_done(ctx->vif, false);
3953         IWL_DEBUG_MAC80211(priv, "leave\n");
3954 }
3955
3956 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3957                                     unsigned int changed_flags,
3958                                     unsigned int *total_flags,
3959                                     u64 multicast)
3960 {
3961         struct iwl_priv *priv = hw->priv;
3962         __le32 filter_or = 0, filter_nand = 0;
3963         struct iwl_rxon_context *ctx;
3964
3965 #define CHK(test, flag) do { \
3966         if (*total_flags & (test))              \
3967                 filter_or |= (flag);            \
3968         else                                    \
3969                 filter_nand |= (flag);          \
3970         } while (0)
3971
3972         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3973                         changed_flags, *total_flags);
3974
3975         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3976         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3977         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3978
3979 #undef CHK
3980
3981         mutex_lock(&priv->mutex);
3982
3983         for_each_context(priv, ctx) {
3984                 ctx->staging.filter_flags &= ~filter_nand;
3985                 ctx->staging.filter_flags |= filter_or;
3986                 iwlcore_commit_rxon(priv, ctx);
3987         }
3988
3989         mutex_unlock(&priv->mutex);
3990
3991         /*
3992          * Receiving all multicast frames is always enabled by the
3993          * default flags setup in iwl_connection_init_rx_config()
3994          * since we currently do not support programming multicast
3995          * filters into the device.
3996          */
3997         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3998                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3999 }
4000
4001 static void iwl_mac_flush(struct ieee80211_hw *hw, bool drop)
4002 {
4003         struct iwl_priv *priv = hw->priv;
4004
4005         mutex_lock(&priv->mutex);
4006         IWL_DEBUG_MAC80211(priv, "enter\n");
4007
4008         /* do not support "flush" */
4009         if (!priv->cfg->ops->lib->txfifo_flush)
4010                 goto done;
4011
4012         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4013                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
4014                 goto done;
4015         }
4016         if (iwl_is_rfkill(priv)) {
4017                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
4018                 goto done;
4019         }
4020
4021         /*
4022          * mac80211 will not push any more frames for transmit
4023          * until the flush is completed
4024          */
4025         if (drop) {
4026                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
4027                 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
4028                         IWL_ERR(priv, "flush request fail\n");
4029                         goto done;
4030                 }
4031         }
4032         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
4033         iwlagn_wait_tx_queue_empty(priv);
4034 done:
4035         mutex_unlock(&priv->mutex);
4036         IWL_DEBUG_MAC80211(priv, "leave\n");
4037 }
4038
4039 /*****************************************************************************
4040  *
4041  * driver setup and teardown
4042  *
4043  *****************************************************************************/
4044
4045 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4046 {
4047         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4048
4049         init_waitqueue_head(&priv->wait_command_queue);
4050
4051         INIT_WORK(&priv->restart, iwl_bg_restart);
4052         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
4053         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
4054         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4055         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
4056         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
4057         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
4058         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4059         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4060
4061         iwl_setup_scan_deferred_work(priv);
4062
4063         if (priv->cfg->ops->lib->setup_deferred_work)
4064                 priv->cfg->ops->lib->setup_deferred_work(priv);
4065
4066         init_timer(&priv->statistics_periodic);
4067         priv->statistics_periodic.data = (unsigned long)priv;
4068         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
4069
4070         init_timer(&priv->ucode_trace);
4071         priv->ucode_trace.data = (unsigned long)priv;
4072         priv->ucode_trace.function = iwl_bg_ucode_trace;
4073
4074         if (priv->cfg->ops->lib->recover_from_tx_stall) {
4075                 init_timer(&priv->monitor_recover);
4076                 priv->monitor_recover.data = (unsigned long)priv;
4077                 priv->monitor_recover.function =
4078                         priv->cfg->ops->lib->recover_from_tx_stall;
4079         }
4080
4081         if (!priv->cfg->base_params->use_isr_legacy)
4082                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4083                         iwl_irq_tasklet, (unsigned long)priv);
4084         else
4085                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4086                         iwl_irq_tasklet_legacy, (unsigned long)priv);
4087 }
4088
4089 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4090 {
4091         if (priv->cfg->ops->lib->cancel_deferred_work)
4092                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4093
4094         cancel_delayed_work_sync(&priv->init_alive_start);
4095         cancel_delayed_work(&priv->alive_start);
4096         cancel_work_sync(&priv->run_time_calib_work);
4097         cancel_work_sync(&priv->beacon_update);
4098
4099         iwl_cancel_scan_deferred_work(priv);
4100
4101         cancel_work_sync(&priv->bt_full_concurrency);
4102         cancel_work_sync(&priv->bt_runtime_config);
4103
4104         del_timer_sync(&priv->statistics_periodic);
4105         del_timer_sync(&priv->ucode_trace);
4106 }
4107
4108 static void iwl_init_hw_rates(struct iwl_priv *priv,
4109                               struct ieee80211_rate *rates)
4110 {
4111         int i;
4112
4113         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
4114                 rates[i].bitrate = iwl_rates[i].ieee * 5;
4115                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4116                 rates[i].hw_value_short = i;
4117                 rates[i].flags = 0;
4118                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
4119                         /*
4120                          * If CCK != 1M then set short preamble rate flag.
4121                          */
4122                         rates[i].flags |=
4123                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4124                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4125                 }
4126         }
4127 }
4128
4129 static int iwl_init_drv(struct iwl_priv *priv)
4130 {
4131         int ret;
4132
4133         spin_lock_init(&priv->sta_lock);
4134         spin_lock_init(&priv->hcmd_lock);
4135
4136         INIT_LIST_HEAD(&priv->free_frames);
4137
4138         mutex_init(&priv->mutex);
4139         mutex_init(&priv->sync_cmd_mutex);
4140
4141         priv->ieee_channels = NULL;
4142         priv->ieee_rates = NULL;
4143         priv->band = IEEE80211_BAND_2GHZ;
4144
4145         priv->iw_mode = NL80211_IFTYPE_STATION;
4146         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
4147         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
4148         priv->_agn.agg_tids_count = 0;
4149
4150         /* initialize force reset */
4151         priv->force_reset[IWL_RF_RESET].reset_duration =
4152                 IWL_DELAY_NEXT_FORCE_RF_RESET;
4153         priv->force_reset[IWL_FW_RESET].reset_duration =
4154                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
4155
4156         /* Choose which receivers/antennas to use */
4157         if (priv->cfg->ops->hcmd->set_rxon_chain)
4158                 priv->cfg->ops->hcmd->set_rxon_chain(priv,
4159                                         &priv->contexts[IWL_RXON_CTX_BSS]);
4160
4161         iwl_init_scan_params(priv);
4162
4163         /* init bt coex */
4164         if (priv->cfg->bt_params &&
4165             priv->cfg->bt_params->advanced_bt_coexist) {
4166                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
4167                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
4168                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
4169                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
4170                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
4171                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
4172                 priv->dynamic_agg_thresh = BT_AGG_THRESHOLD_DEF;
4173         }
4174
4175         /* Set the tx_power_user_lmt to the lowest power level
4176          * this value will get overwritten by channel max power avg
4177          * from eeprom */
4178         priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
4179         priv->tx_power_next = IWLAGN_TX_POWER_TARGET_POWER_MIN;
4180
4181         ret = iwl_init_channel_map(priv);
4182         if (ret) {
4183                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4184                 goto err;
4185         }
4186
4187         ret = iwlcore_init_geos(priv);
4188         if (ret) {
4189                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4190                 goto err_free_channel_map;
4191         }
4192         iwl_init_hw_rates(priv, priv->ieee_rates);
4193
4194         return 0;
4195
4196 err_free_channel_map:
4197         iwl_free_channel_map(priv);
4198 err:
4199         return ret;
4200 }
4201
4202 static void iwl_uninit_drv(struct iwl_priv *priv)
4203 {
4204         iwl_calib_free_results(priv);
4205         iwlcore_free_geos(priv);
4206         iwl_free_channel_map(priv);
4207         kfree(priv->scan_cmd);
4208 }
4209
4210 static struct ieee80211_ops iwl_hw_ops = {
4211         .tx = iwl_mac_tx,
4212         .start = iwl_mac_start,
4213         .stop = iwl_mac_stop,
4214         .add_interface = iwl_mac_add_interface,
4215         .remove_interface = iwl_mac_remove_interface,
4216         .config = iwl_mac_config,
4217         .configure_filter = iwlagn_configure_filter,
4218         .set_key = iwl_mac_set_key,
4219         .update_tkip_key = iwl_mac_update_tkip_key,
4220         .conf_tx = iwl_mac_conf_tx,
4221         .reset_tsf = iwl_mac_reset_tsf,
4222         .bss_info_changed = iwl_bss_info_changed,
4223         .ampdu_action = iwl_mac_ampdu_action,
4224         .hw_scan = iwl_mac_hw_scan,
4225         .sta_notify = iwl_mac_sta_notify,
4226         .sta_add = iwlagn_mac_sta_add,
4227         .sta_remove = iwl_mac_sta_remove,
4228         .channel_switch = iwl_mac_channel_switch,
4229         .flush = iwl_mac_flush,
4230         .tx_last_beacon = iwl_mac_tx_last_beacon,
4231 };
4232
4233 static void iwl_hw_detect(struct iwl_priv *priv)
4234 {
4235         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
4236         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
4237         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
4238         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
4239 }
4240
4241 static int iwl_set_hw_params(struct iwl_priv *priv)
4242 {
4243         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
4244         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
4245         if (priv->cfg->mod_params->amsdu_size_8K)
4246                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
4247         else
4248                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
4249
4250         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
4251
4252         if (priv->cfg->mod_params->disable_11n)
4253                 priv->cfg->sku &= ~IWL_SKU_N;
4254
4255         /* Device-specific setup */
4256         return priv->cfg->ops->lib->set_hw_params(priv);
4257 }
4258
4259 static const u8 iwlagn_bss_ac_to_fifo[] = {
4260         IWL_TX_FIFO_VO,
4261         IWL_TX_FIFO_VI,
4262         IWL_TX_FIFO_BE,
4263         IWL_TX_FIFO_BK,
4264 };
4265
4266 static const u8 iwlagn_bss_ac_to_queue[] = {
4267         0, 1, 2, 3,
4268 };
4269
4270 static const u8 iwlagn_pan_ac_to_fifo[] = {
4271         IWL_TX_FIFO_VO_IPAN,
4272         IWL_TX_FIFO_VI_IPAN,
4273         IWL_TX_FIFO_BE_IPAN,
4274         IWL_TX_FIFO_BK_IPAN,
4275 };
4276
4277 static const u8 iwlagn_pan_ac_to_queue[] = {
4278         7, 6, 5, 4,
4279 };
4280
4281 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4282 {
4283         int err = 0, i;
4284         struct iwl_priv *priv;
4285         struct ieee80211_hw *hw;
4286         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4287         unsigned long flags;
4288         u16 pci_cmd, num_mac;
4289
4290         /************************
4291          * 1. Allocating HW data
4292          ************************/
4293
4294         /* Disabling hardware scan means that mac80211 will perform scans
4295          * "the hard way", rather than using device's scan. */
4296         if (cfg->mod_params->disable_hw_scan) {
4297                 dev_printk(KERN_DEBUG, &(pdev->dev),
4298                         "sw scan support is deprecated\n");
4299                 iwl_hw_ops.hw_scan = NULL;
4300         }
4301
4302         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
4303         if (!hw) {
4304                 err = -ENOMEM;
4305                 goto out;
4306         }
4307         priv = hw->priv;
4308         /* At this point both hw and priv are allocated. */
4309
4310         /*
4311          * The default context is always valid,
4312          * more may be discovered when firmware
4313          * is loaded.
4314          */
4315         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
4316
4317         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
4318                 priv->contexts[i].ctxid = i;
4319
4320         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
4321         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
4322         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
4323         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
4324         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
4325         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
4326         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
4327         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
4328         priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
4329         priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
4330         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
4331                 BIT(NL80211_IFTYPE_ADHOC);
4332         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
4333                 BIT(NL80211_IFTYPE_STATION);
4334         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
4335         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
4336         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
4337
4338         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
4339         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING;
4340         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC;
4341         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
4342         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
4343         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
4344         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
4345         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
4346         priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
4347         priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
4348         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
4349         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
4350                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
4351         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
4352         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
4353         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
4354
4355         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
4356
4357         SET_IEEE80211_DEV(hw, &pdev->dev);
4358
4359         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4360         priv->cfg = cfg;
4361         priv->pci_dev = pdev;
4362         priv->inta_mask = CSR_INI_SET_MASK;
4363
4364         /* is antenna coupling more than 35dB ? */
4365         priv->bt_ant_couple_ok =
4366                 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
4367                 true : false;
4368
4369         /* enable/disable bt channel announcement */
4370         priv->bt_ch_announce = iwlagn_bt_ch_announce;
4371
4372         if (iwl_alloc_traffic_mem(priv))
4373                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4374
4375         /**************************
4376          * 2. Initializing PCI bus
4377          **************************/
4378         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
4379                                 PCIE_LINK_STATE_CLKPM);
4380
4381         if (pci_enable_device(pdev)) {
4382                 err = -ENODEV;
4383                 goto out_ieee80211_free_hw;
4384         }
4385
4386         pci_set_master(pdev);
4387
4388         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4389         if (!err)
4390                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4391         if (err) {
4392                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4393                 if (!err)
4394                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4395                 /* both attempts failed: */
4396                 if (err) {
4397                         IWL_WARN(priv, "No suitable DMA available.\n");
4398                         goto out_pci_disable_device;
4399                 }
4400         }
4401
4402         err = pci_request_regions(pdev, DRV_NAME);
4403         if (err)
4404                 goto out_pci_disable_device;
4405
4406         pci_set_drvdata(pdev, priv);
4407
4408
4409         /***********************
4410          * 3. Read REV register
4411          ***********************/
4412         priv->hw_base = pci_iomap(pdev, 0, 0);
4413         if (!priv->hw_base) {
4414                 err = -ENODEV;
4415                 goto out_pci_release_regions;
4416         }
4417
4418         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4419                 (unsigned long long) pci_resource_len(pdev, 0));
4420         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4421
4422         /* these spin locks will be used in apm_ops.init and EEPROM access
4423          * we should init now
4424          */
4425         spin_lock_init(&priv->reg_lock);
4426         spin_lock_init(&priv->lock);
4427
4428         /*
4429          * stop and reset the on-board processor just in case it is in a
4430          * strange state ... like being left stranded by a primary kernel
4431          * and this is now the kdump kernel trying to start up
4432          */
4433         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4434
4435         iwl_hw_detect(priv);
4436         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
4437                 priv->cfg->name, priv->hw_rev);
4438
4439         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4440          * PCI Tx retries from interfering with C3 CPU state */
4441         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4442
4443         iwl_prepare_card_hw(priv);
4444         if (!priv->hw_ready) {
4445                 IWL_WARN(priv, "Failed, HW not ready\n");
4446                 goto out_iounmap;
4447         }
4448
4449         /*****************
4450          * 4. Read EEPROM
4451          *****************/
4452         /* Read the EEPROM */
4453         err = iwl_eeprom_init(priv);
4454         if (err) {
4455                 IWL_ERR(priv, "Unable to init EEPROM\n");
4456                 goto out_iounmap;
4457         }
4458         err = iwl_eeprom_check_version(priv);
4459         if (err)
4460                 goto out_free_eeprom;
4461
4462         /* extract MAC Address */
4463         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
4464         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
4465         priv->hw->wiphy->addresses = priv->addresses;
4466         priv->hw->wiphy->n_addresses = 1;
4467         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
4468         if (num_mac > 1) {
4469                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
4470                        ETH_ALEN);
4471                 priv->addresses[1].addr[5]++;
4472                 priv->hw->wiphy->n_addresses++;
4473         }
4474
4475         /************************
4476          * 5. Setup HW constants
4477          ************************/
4478         if (iwl_set_hw_params(priv)) {
4479                 IWL_ERR(priv, "failed to set hw parameters\n");
4480                 goto out_free_eeprom;
4481         }
4482
4483         /*******************
4484          * 6. Setup priv
4485          *******************/
4486
4487         err = iwl_init_drv(priv);
4488         if (err)
4489                 goto out_free_eeprom;
4490         /* At this point both hw and priv are initialized. */
4491
4492         /********************
4493          * 7. Setup services
4494          ********************/
4495         spin_lock_irqsave(&priv->lock, flags);
4496         iwl_disable_interrupts(priv);
4497         spin_unlock_irqrestore(&priv->lock, flags);
4498
4499         pci_enable_msi(priv->pci_dev);
4500
4501         iwl_alloc_isr_ict(priv);
4502         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4503                           IRQF_SHARED, DRV_NAME, priv);
4504         if (err) {
4505                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4506                 goto out_disable_msi;
4507         }
4508
4509         iwl_setup_deferred_work(priv);
4510         iwl_setup_rx_handlers(priv);
4511
4512         /*********************************************
4513          * 8. Enable interrupts and read RFKILL state
4514          *********************************************/
4515
4516         /* enable interrupts if needed: hw bug w/a */
4517         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
4518         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
4519                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
4520                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
4521         }
4522
4523         iwl_enable_interrupts(priv);
4524
4525         /* If platform's RF_KILL switch is NOT set to KILL */
4526         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4527                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4528         else
4529                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4530
4531         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
4532                 test_bit(STATUS_RF_KILL_HW, &priv->status));
4533
4534         iwl_power_initialize(priv);
4535         iwl_tt_initialize(priv);
4536
4537         init_completion(&priv->_agn.firmware_loading_complete);
4538
4539         err = iwl_request_firmware(priv, true);
4540         if (err)
4541                 goto out_destroy_workqueue;
4542
4543         return 0;
4544
4545  out_destroy_workqueue:
4546         destroy_workqueue(priv->workqueue);
4547         priv->workqueue = NULL;
4548         free_irq(priv->pci_dev->irq, priv);
4549         iwl_free_isr_ict(priv);
4550  out_disable_msi:
4551         pci_disable_msi(priv->pci_dev);
4552         iwl_uninit_drv(priv);
4553  out_free_eeprom:
4554         iwl_eeprom_free(priv);
4555  out_iounmap:
4556         pci_iounmap(pdev, priv->hw_base);
4557  out_pci_release_regions:
4558         pci_set_drvdata(pdev, NULL);
4559         pci_release_regions(pdev);
4560  out_pci_disable_device:
4561         pci_disable_device(pdev);
4562  out_ieee80211_free_hw:
4563         iwl_free_traffic_mem(priv);
4564         ieee80211_free_hw(priv->hw);
4565  out:
4566         return err;
4567 }
4568
4569 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4570 {
4571         struct iwl_priv *priv = pci_get_drvdata(pdev);
4572         unsigned long flags;
4573
4574         if (!priv)
4575                 return;
4576
4577         wait_for_completion(&priv->_agn.firmware_loading_complete);
4578
4579         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4580
4581         iwl_dbgfs_unregister(priv);
4582         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4583
4584         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4585          * to be called and iwl_down since we are removing the device
4586          * we need to set STATUS_EXIT_PENDING bit.
4587          */
4588         set_bit(STATUS_EXIT_PENDING, &priv->status);
4589         if (priv->mac80211_registered) {
4590                 ieee80211_unregister_hw(priv->hw);
4591                 priv->mac80211_registered = 0;
4592         } else {
4593                 iwl_down(priv);
4594         }
4595
4596         /*
4597          * Make sure device is reset to low power before unloading driver.
4598          * This may be redundant with iwl_down(), but there are paths to
4599          * run iwl_down() without calling apm_ops.stop(), and there are
4600          * paths to avoid running iwl_down() at all before leaving driver.
4601          * This (inexpensive) call *makes sure* device is reset.
4602          */
4603         iwl_apm_stop(priv);
4604
4605         iwl_tt_exit(priv);
4606
4607         /* make sure we flush any pending irq or
4608          * tasklet for the driver
4609          */
4610         spin_lock_irqsave(&priv->lock, flags);
4611         iwl_disable_interrupts(priv);
4612         spin_unlock_irqrestore(&priv->lock, flags);
4613
4614         iwl_synchronize_irq(priv);
4615
4616         iwl_dealloc_ucode_pci(priv);
4617
4618         if (priv->rxq.bd)
4619                 iwlagn_rx_queue_free(priv, &priv->rxq);
4620         iwlagn_hw_txq_ctx_free(priv);
4621
4622         iwl_eeprom_free(priv);
4623
4624
4625         /*netif_stop_queue(dev); */
4626         flush_workqueue(priv->workqueue);
4627
4628         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4629          * priv->workqueue... so we can't take down the workqueue
4630          * until now... */
4631         destroy_workqueue(priv->workqueue);
4632         priv->workqueue = NULL;
4633         iwl_free_traffic_mem(priv);
4634
4635         free_irq(priv->pci_dev->irq, priv);
4636         pci_disable_msi(priv->pci_dev);
4637         pci_iounmap(pdev, priv->hw_base);
4638         pci_release_regions(pdev);
4639         pci_disable_device(pdev);
4640         pci_set_drvdata(pdev, NULL);
4641
4642         iwl_uninit_drv(priv);
4643
4644         iwl_free_isr_ict(priv);
4645
4646         dev_kfree_skb(priv->beacon_skb);
4647
4648         ieee80211_free_hw(priv->hw);
4649 }
4650
4651
4652 /*****************************************************************************
4653  *
4654  * driver and module entry point
4655  *
4656  *****************************************************************************/
4657
4658 /* Hardware specific file defines the PCI IDs table for that hardware module */
4659 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
4660 #ifdef CONFIG_IWL4965
4661         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4662         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4663 #endif /* CONFIG_IWL4965 */
4664 #ifdef CONFIG_IWL5000
4665 /* 5100 Series WiFi */
4666         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
4667         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
4668         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
4669         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
4670         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
4671         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
4672         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
4673         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
4674         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
4675         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
4676         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
4677         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
4678         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
4679         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
4680         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
4681         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
4682         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
4683         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
4684         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
4685         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
4686         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
4687         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
4688         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
4689         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
4690
4691 /* 5300 Series WiFi */
4692         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
4693         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
4694         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
4695         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
4696         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
4697         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
4698         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
4699         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
4700         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
4701         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
4702         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
4703         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
4704
4705 /* 5350 Series WiFi/WiMax */
4706         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
4707         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
4708         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
4709
4710 /* 5150 Series Wifi/WiMax */
4711         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
4712         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
4713         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
4714         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
4715         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
4716         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
4717
4718         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
4719         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
4720         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
4721         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
4722
4723 /* 6x00 Series */
4724         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
4725         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
4726         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
4727         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
4728         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
4729         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
4730         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
4731         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
4732         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
4733         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
4734
4735 /* 6x00 Series Gen2a */
4736         {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg)},
4737         {IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg)},
4738         {IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg)},
4739         {IWL_PCI_DEVICE(0x0082, 0x1206, iwl6000g2a_2abg_cfg)},
4740         {IWL_PCI_DEVICE(0x0085, 0x1216, iwl6000g2a_2abg_cfg)},
4741         {IWL_PCI_DEVICE(0x0082, 0x1226, iwl6000g2a_2abg_cfg)},
4742         {IWL_PCI_DEVICE(0x0082, 0x1207, iwl6000g2a_2bg_cfg)},
4743         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2a_2agn_cfg)},
4744         {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6000g2a_2abg_cfg)},
4745         {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6000g2a_2bg_cfg)},
4746         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2a_2agn_cfg)},
4747         {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6000g2a_2abg_cfg)},
4748         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2a_2agn_cfg)},
4749         {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6000g2a_2abg_cfg)},
4750
4751 /* 6x00 Series Gen2b */
4752         {IWL_PCI_DEVICE(0x008F, 0x5105, iwl6000g2b_bgn_cfg)},
4753         {IWL_PCI_DEVICE(0x0090, 0x5115, iwl6000g2b_bgn_cfg)},
4754         {IWL_PCI_DEVICE(0x008F, 0x5125, iwl6000g2b_bgn_cfg)},
4755         {IWL_PCI_DEVICE(0x008F, 0x5107, iwl6000g2b_bg_cfg)},
4756         {IWL_PCI_DEVICE(0x008F, 0x5201, iwl6000g2b_2agn_cfg)},
4757         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4758         {IWL_PCI_DEVICE(0x008F, 0x5221, iwl6000g2b_2agn_cfg)},
4759         {IWL_PCI_DEVICE(0x008F, 0x5206, iwl6000g2b_2abg_cfg)},
4760         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4761         {IWL_PCI_DEVICE(0x008F, 0x5226, iwl6000g2b_2abg_cfg)},
4762         {IWL_PCI_DEVICE(0x008F, 0x5207, iwl6000g2b_2bg_cfg)},
4763         {IWL_PCI_DEVICE(0x008A, 0x5301, iwl6000g2b_bgn_cfg)},
4764         {IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg)},
4765         {IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg)},
4766         {IWL_PCI_DEVICE(0x008A, 0x5321, iwl6000g2b_bgn_cfg)},
4767         {IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg)},
4768         {IWL_PCI_DEVICE(0x008B, 0x5311, iwl6000g2b_bgn_cfg)},
4769         {IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg)},
4770         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4771         {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6000g2b_2bgn_cfg)},
4772         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4773         {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6000g2b_2agn_cfg)},
4774         {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6000g2b_2bgn_cfg)},
4775         {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6000g2b_2abg_cfg)},
4776         {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6000g2b_2bg_cfg)},
4777         {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6000g2b_2agn_cfg)},
4778         {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6000g2b_2bgn_cfg)},
4779         {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6000g2b_2abg_cfg)},
4780
4781 /* 6x50 WiFi/WiMax Series */
4782         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
4783         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
4784         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
4785         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
4786         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
4787         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
4788
4789 /* 6x50 WiFi/WiMax Series Gen2 */
4790         {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6050g2_bgn_cfg)},
4791         {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6050g2_bgn_cfg)},
4792         {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6050g2_bgn_cfg)},
4793         {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6050g2_bgn_cfg)},
4794         {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6050g2_bgn_cfg)},
4795         {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6050g2_bgn_cfg)},
4796
4797 /* 1000 Series WiFi */
4798         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
4799         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
4800         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
4801         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
4802         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
4803         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
4804         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4805         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4806         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4807         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4808         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4809         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4810
4811 /* 100 Series WiFi */
4812         {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
4813         {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
4814         {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
4815         {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
4816         {IWL_PCI_DEVICE(0x08AE, 0x1017, iwl100_bg_cfg)},
4817
4818 /* 130 Series WiFi */
4819         {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
4820         {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
4821         {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
4822         {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
4823         {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
4824         {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
4825
4826 #endif /* CONFIG_IWL5000 */
4827
4828         {0}
4829 };
4830 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4831
4832 static struct pci_driver iwl_driver = {
4833         .name = DRV_NAME,
4834         .id_table = iwl_hw_card_ids,
4835         .probe = iwl_pci_probe,
4836         .remove = __devexit_p(iwl_pci_remove),
4837 #ifdef CONFIG_PM
4838         .suspend = iwl_pci_suspend,
4839         .resume = iwl_pci_resume,
4840 #endif
4841 };
4842
4843 static int __init iwl_init(void)
4844 {
4845
4846         int ret;
4847         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4848         pr_info(DRV_COPYRIGHT "\n");
4849
4850         ret = iwlagn_rate_control_register();
4851         if (ret) {
4852                 pr_err("Unable to register rate control algorithm: %d\n", ret);
4853                 return ret;
4854         }
4855
4856         ret = pci_register_driver(&iwl_driver);
4857         if (ret) {
4858                 pr_err("Unable to initialize PCI module\n");
4859                 goto error_register;
4860         }
4861
4862         return ret;
4863
4864 error_register:
4865         iwlagn_rate_control_unregister();
4866         return ret;
4867 }
4868
4869 static void __exit iwl_exit(void)
4870 {
4871         pci_unregister_driver(&iwl_driver);
4872         iwlagn_rate_control_unregister();
4873 }
4874
4875 module_exit(iwl_exit);
4876 module_init(iwl_init);
4877
4878 #ifdef CONFIG_IWLWIFI_DEBUG
4879 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
4880 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
4881 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4882 MODULE_PARM_DESC(debug, "debug output mask");
4883 #endif
4884
4885 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
4886 MODULE_PARM_DESC(swcrypto50,
4887                  "using crypto in software (default 0 [hardware]) (deprecated)");
4888 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4889 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4890 module_param_named(queues_num50,
4891                    iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4892 MODULE_PARM_DESC(queues_num50,
4893                  "number of hw queues in 50xx series (deprecated)");
4894 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4895 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4896 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4897 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
4898 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4899 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4900 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
4901                    int, S_IRUGO);
4902 MODULE_PARM_DESC(amsdu_size_8K50,
4903                  "enable 8K amsdu size in 50XX series (deprecated)");
4904 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4905                    int, S_IRUGO);
4906 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4907 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4908 MODULE_PARM_DESC(fw_restart50,
4909                  "restart firmware in case of error (deprecated)");
4910 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4911 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4912 module_param_named(
4913         disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
4914 MODULE_PARM_DESC(disable_hw_scan,
4915                  "disable hardware scanning (default 0) (deprecated)");
4916
4917 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4918                    S_IRUGO);
4919 MODULE_PARM_DESC(ucode_alternative,
4920                  "specify ucode alternative to use from ucode file");
4921
4922 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4923 MODULE_PARM_DESC(antenna_coupling,
4924                  "specify antenna coupling in dB (defualt: 0 dB)");
4925
4926 module_param_named(bt_ch_announce, iwlagn_bt_ch_announce, bool, S_IRUGO);
4927 MODULE_PARM_DESC(bt_ch_announce,
4928                  "Enable BT channel announcement mode (default: enable)");