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 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/slab.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/sched.h>
  38 #include <linux/skbuff.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/wireless.h>
  41 #include <linux/firmware.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/if_arp.h>
  44
  45 #include <net/mac80211.h>
  46
  47 #include <asm/div64.h>
  48
  49 #define DRV_NAME        "iwlagn"
  50
  51 #include "iwl-eeprom.h"
  52 #include "iwl-dev.h"
  53 #include "iwl-core.h"
  54 #include "iwl-io.h"
  55 #include "iwl-helpers.h"
  56 #include "iwl-sta.h"
  57 #include "iwl-calib.h"
  58 #include "iwl-agn.h"
  59
  60
  61 /******************************************************************************
  62  *
  63  * module boiler plate
  64  *
  65  ******************************************************************************/
  66
  67 /*
  68  * module name, copyright, version, etc.
  69  */
  70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  71
  72 #ifdef CONFIG_IWLWIFI_DEBUG
  73 #define VD "d"
  74 #else
  75 #define VD
  76 #endif
  77
  78 #define DRV_VERSION     IWLWIFI_VERSION VD
  79
  80
  81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  82 MODULE_VERSION(DRV_VERSION);
  83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  84 MODULE_LICENSE("GPL");
  85 MODULE_ALIAS("iwl4965");
  86
  87 /**
  88  * iwl_commit_rxon - commit staging_rxon to hardware
  89  *
  90  * The RXON command in staging_rxon is committed to the hardware and
  91  * the active_rxon structure is updated with the new data.  This
  92  * function correctly transitions out of the RXON_ASSOC_MSK state if
  93  * a HW tune is required based on the RXON structure changes.
  94  */
  95 int iwl_commit_rxon(struct iwl_priv *priv)
  96 {
  97         /* cast away the const for active_rxon in this function */
  98         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
  99         int ret;
 100         bool new_assoc =
 101                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 102
 103         if (!iwl_is_alive(priv))
 104                 return -EBUSY;
 105
 106         /* always get timestamp with Rx frame */
 107         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 108
 109         ret = iwl_check_rxon_cmd(priv);
 110         if (ret) {
 111                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 112                 return -EINVAL;
 113         }
 114
 115         /*
 116          * receive commit_rxon request
 117          * abort any previous channel switch if still in process
 118          */
 119         if (priv->switch_rxon.switch_in_progress &&
 120             (priv->switch_rxon.channel != priv->staging_rxon.channel)) {
 121                 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
 122                       le16_to_cpu(priv->switch_rxon.channel));
 123                 priv->switch_rxon.switch_in_progress = false;
 124         }
 125
 126         /* If we don't need to send a full RXON, we can use
 127          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 128          * and other flags for the current radio configuration. */
 129         if (!iwl_full_rxon_required(priv)) {
 130                 ret = iwl_send_rxon_assoc(priv);
 131                 if (ret) {
 132                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 133                         return ret;
 134                 }
 135
 136                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 137                 iwl_print_rx_config_cmd(priv);
 138                 return 0;
 139         }
 140
 141         /* If we are currently associated and the new config requires
 142          * an RXON_ASSOC and the new config wants the associated mask enabled,
 143          * we must clear the associated from the active configuration
 144          * before we apply the new config */
 145         if (iwl_is_associated(priv) && new_assoc) {
 146                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 147                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 148
 149                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 150                                       sizeof(struct iwl_rxon_cmd),
 151                                       &priv->active_rxon);
 152
 153                 /* If the mask clearing failed then we set
 154                  * active_rxon back to what it was previously */
 155                 if (ret) {
 156                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 157                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 158                         return ret;
 159                 }
 160                 iwl_clear_ucode_stations(priv, false);
 161                 iwl_restore_stations(priv);
 162                 ret = iwl_restore_default_wep_keys(priv);
 163                 if (ret) {
 164                         IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
 165                         return ret;
 166                 }
 167         }
 168
 169         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 170                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 171                        "* channel = %d\n"
 172                        "* bssid = %pM\n",
 173                        (new_assoc ? "" : "out"),
 174                        le16_to_cpu(priv->staging_rxon.channel),
 175                        priv->staging_rxon.bssid_addr);
 176
 177         iwl_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
 178
 179         /* Apply the new configuration
 180          * RXON unassoc clears the station table in uCode so restoration of
 181          * stations is needed after it (the RXON command) completes
 182          */
 183         if (!new_assoc) {
 184                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 185                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 186                 if (ret) {
 187                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 188                         return ret;
 189                 }
 190                 IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON.\n");
 191                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 192                 iwl_clear_ucode_stations(priv, false);
 193                 iwl_restore_stations(priv);
 194                 ret = iwl_restore_default_wep_keys(priv);
 195                 if (ret) {
 196                         IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
 197                         return ret;
 198                 }
 199         }
 200
 201         priv->start_calib = 0;
 202         if (new_assoc) {
 203                 /*
 204                  * allow CTS-to-self if possible for new association.
 205                  * this is relevant only for 5000 series and up,
 206                  * but will not damage 4965
 207                  */
 208                 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 209
 210                 /* Apply the new configuration
 211                  * RXON assoc doesn't clear the station table in uCode,
 212                  */
 213                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 214                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 215                 if (ret) {
 216                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 217                         return ret;
 218                 }
 219                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 220         }
 221         iwl_print_rx_config_cmd(priv);
 222
 223         iwl_init_sensitivity(priv);
 224
 225         /* If we issue a new RXON command which required a tune then we must
 226          * send a new TXPOWER command or we won't be able to Tx any frames */
 227         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 228         if (ret) {
 229                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 230                 return ret;
 231         }
 232
 233         return 0;
 234 }
 235
 236 void iwl_update_chain_flags(struct iwl_priv *priv)
 237 {
 238
 239         if (priv->cfg->ops->hcmd->set_rxon_chain)
 240                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 241         iwlcore_commit_rxon(priv);
 242 }
 243
 244 static void iwl_clear_free_frames(struct iwl_priv *priv)
 245 {
 246         struct list_head *element;
 247
 248         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 249                        priv->frames_count);
 250
 251         while (!list_empty(&priv->free_frames)) {
 252                 element = priv->free_frames.next;
 253                 list_del(element);
 254                 kfree(list_entry(element, struct iwl_frame, list));
 255                 priv->frames_count--;
 256         }
 257
 258         if (priv->frames_count) {
 259                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 260                             priv->frames_count);
 261                 priv->frames_count = 0;
 262         }
 263 }
 264
 265 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 266 {
 267         struct iwl_frame *frame;
 268         struct list_head *element;
 269         if (list_empty(&priv->free_frames)) {
 270                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 271                 if (!frame) {
 272                         IWL_ERR(priv, "Could not allocate frame!\n");
 273                         return NULL;
 274                 }
 275
 276                 priv->frames_count++;
 277                 return frame;
 278         }
 279
 280         element = priv->free_frames.next;
 281         list_del(element);
 282         return list_entry(element, struct iwl_frame, list);
 283 }
 284
 285 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 286 {
 287         memset(frame, 0, sizeof(*frame));
 288         list_add(&frame->list, &priv->free_frames);
 289 }
 290
 291 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
 292                                           struct ieee80211_hdr *hdr,
 293                                           int left)
 294 {
 295         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 296             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 297              (priv->iw_mode != NL80211_IFTYPE_AP)))
 298                 return 0;
 299
 300         if (priv->ibss_beacon->len > left)
 301                 return 0;
 302
 303         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 304
 305         return priv->ibss_beacon->len;
 306 }
 307
 308 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 309 static void iwl_set_beacon_tim(struct iwl_priv *priv,
 310                 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 311                 u8 *beacon, u32 frame_size)
 312 {
 313         u16 tim_idx;
 314         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 315
 316         /*
 317          * The index is relative to frame start but we start looking at the
 318          * variable-length part of the beacon.
 319          */
 320         tim_idx = mgmt->u.beacon.variable - beacon;
 321
 322         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 323         while ((tim_idx < (frame_size - 2)) &&
 324                         (beacon[tim_idx] != WLAN_EID_TIM))
 325                 tim_idx += beacon[tim_idx+1] + 2;
 326
 327         /* If TIM field was found, set variables */
 328         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 329                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 330                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 331         } else
 332                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 333 }
 334
 335 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 336                                        struct iwl_frame *frame)
 337 {
 338         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 339         u32 frame_size;
 340         u32 rate_flags;
 341         u32 rate;
 342         /*
 343          * We have to set up the TX command, the TX Beacon command, and the
 344          * beacon contents.
 345          */
 346
 347         /* Initialize memory */
 348         tx_beacon_cmd = &frame->u.beacon;
 349         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 350
 351         /* Set up TX beacon contents */
 352         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 353                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 354         if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
 355                 return 0;
 356
 357         /* Set up TX command fields */
 358         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 359         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 360         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 361         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 362                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 363
 364         /* Set up TX beacon command fields */
 365         iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
 366                         frame_size);
 367
 368         /* Set up packet rate and flags */
 369         rate = iwl_rate_get_lowest_plcp(priv);
 370         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant);
 371         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 372         if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
 373                 rate_flags |= RATE_MCS_CCK_MSK;
 374         tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
 375                         rate_flags);
 376
 377         return sizeof(*tx_beacon_cmd) + frame_size;
 378 }
 379 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 380 {
 381         struct iwl_frame *frame;
 382         unsigned int frame_size;
 383         int rc;
 384
 385         frame = iwl_get_free_frame(priv);
 386         if (!frame) {
 387                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 388                           "command.\n");
 389                 return -ENOMEM;
 390         }
 391
 392         frame_size = iwl_hw_get_beacon_cmd(priv, frame);
 393         if (!frame_size) {
 394                 IWL_ERR(priv, "Error configuring the beacon command\n");
 395                 iwl_free_frame(priv, frame);
 396                 return -EINVAL;
 397         }
 398
 399         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 400                               &frame->u.cmd[0]);
 401
 402         iwl_free_frame(priv, frame);
 403
 404         return rc;
 405 }
 406
 407 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 408 {
 409         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 410
 411         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 412         if (sizeof(dma_addr_t) > sizeof(u32))
 413                 addr |=
 414                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 415
 416         return addr;
 417 }
 418
 419 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 420 {
 421         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 422
 423         return le16_to_cpu(tb->hi_n_len) >> 4;
 424 }
 425
 426 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 427                                   dma_addr_t addr, u16 len)
 428 {
 429         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 430         u16 hi_n_len = len << 4;
 431
 432         put_unaligned_le32(addr, &tb->lo);
 433         if (sizeof(dma_addr_t) > sizeof(u32))
 434                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 435
 436         tb->hi_n_len = cpu_to_le16(hi_n_len);
 437
 438         tfd->num_tbs = idx + 1;
 439 }
 440
 441 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 442 {
 443         return tfd->num_tbs & 0x1f;
 444 }
 445
 446 /**
 447  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 448  * @priv - driver private data
 449  * @txq - tx queue
 450  *
 451  * Does NOT advance any TFD circular buffer read/write indexes
 452  * Does NOT free the TFD itself (which is within circular buffer)
 453  */
 454 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 455 {
 456         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 457         struct iwl_tfd *tfd;
 458         struct pci_dev *dev = priv->pci_dev;
 459         int index = txq->q.read_ptr;
 460         int i;
 461         int num_tbs;
 462
 463         tfd = &tfd_tmp[index];
 464
 465         /* Sanity check on number of chunks */
 466         num_tbs = iwl_tfd_get_num_tbs(tfd);
 467
 468         if (num_tbs >= IWL_NUM_OF_TBS) {
 469                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 470                 /* @todo issue fatal error, it is quite serious situation */
 471                 return;
 472         }
 473
 474         /* Unmap tx_cmd */
 475         if (num_tbs)
 476                 pci_unmap_single(dev,
 477                                 pci_unmap_addr(&txq->meta[index], mapping),
 478                                 pci_unmap_len(&txq->meta[index], len),
 479                                 PCI_DMA_BIDIRECTIONAL);
 480
 481         /* Unmap chunks, if any. */
 482         for (i = 1; i < num_tbs; i++) {
 483                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 484                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 485
 486                 if (txq->txb) {
 487                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 488                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 489                 }
 490         }
 491 }
 492
 493 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 494                                  struct iwl_tx_queue *txq,
 495                                  dma_addr_t addr, u16 len,
 496                                  u8 reset, u8 pad)
 497 {
 498         struct iwl_queue *q;
 499         struct iwl_tfd *tfd, *tfd_tmp;
 500         u32 num_tbs;
 501
 502         q = &txq->q;
 503         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 504         tfd = &tfd_tmp[q->write_ptr];
 505
 506         if (reset)
 507                 memset(tfd, 0, sizeof(*tfd));
 508
 509         num_tbs = iwl_tfd_get_num_tbs(tfd);
 510
 511         /* Each TFD can point to a maximum 20 Tx buffers */
 512         if (num_tbs >= IWL_NUM_OF_TBS) {
 513                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 514                           IWL_NUM_OF_TBS);
 515                 return -EINVAL;
 516         }
 517
 518         BUG_ON(addr & ~DMA_BIT_MASK(36));
 519         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 520                 IWL_ERR(priv, "Unaligned address = %llx\n",
 521                           (unsigned long long)addr);
 522
 523         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 524
 525         return 0;
 526 }
 527
 528 /*
 529  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 530  * given Tx queue, and enable the DMA channel used for that queue.
 531  *
 532  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 533  * channels supported in hardware.
 534  */
 535 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 536                          struct iwl_tx_queue *txq)
 537 {
 538         int txq_id = txq->q.id;
 539
 540         /* Circular buffer (TFD queue in DRAM) physical base address */
 541         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 542                              txq->q.dma_addr >> 8);
 543
 544         return 0;
 545 }
 546
 547 /******************************************************************************
 548  *
 549  * Generic RX handler implementations
 550  *
 551  ******************************************************************************/
 552 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 553                                 struct iwl_rx_mem_buffer *rxb)
 554 {
 555         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 556         struct iwl_alive_resp *palive;
 557         struct delayed_work *pwork;
 558
 559         palive = &pkt->u.alive_frame;
 560
 561         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 562                        "0x%01X 0x%01X\n",
 563                        palive->is_valid, palive->ver_type,
 564                        palive->ver_subtype);
 565
 566         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 567                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 568                 memcpy(&priv->card_alive_init,
 569                        &pkt->u.alive_frame,
 570                        sizeof(struct iwl_init_alive_resp));
 571                 pwork = &priv->init_alive_start;
 572         } else {
 573                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 574                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 575                        sizeof(struct iwl_alive_resp));
 576                 pwork = &priv->alive_start;
 577         }
 578
 579         /* We delay the ALIVE response by 5ms to
 580          * give the HW RF Kill time to activate... */
 581         if (palive->is_valid == UCODE_VALID_OK)
 582                 queue_delayed_work(priv->workqueue, pwork,
 583                                    msecs_to_jiffies(5));
 584         else
 585                 IWL_WARN(priv, "uCode did not respond OK.\n");
 586 }
 587
 588 static void iwl_bg_beacon_update(struct work_struct *work)
 589 {
 590         struct iwl_priv *priv =
 591                 container_of(work, struct iwl_priv, beacon_update);
 592         struct sk_buff *beacon;
 593
 594         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 595         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 596
 597         if (!beacon) {
 598                 IWL_ERR(priv, "update beacon failed\n");
 599                 return;
 600         }
 601
 602         mutex_lock(&priv->mutex);
 603         /* new beacon skb is allocated every time; dispose previous.*/
 604         if (priv->ibss_beacon)
 605                 dev_kfree_skb(priv->ibss_beacon);
 606
 607         priv->ibss_beacon = beacon;
 608         mutex_unlock(&priv->mutex);
 609
 610         iwl_send_beacon_cmd(priv);
 611 }
 612
 613 /**
 614  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 615  *
 616  * This callback is provided in order to send a statistics request.
 617  *
 618  * This timer function is continually reset to execute within
 619  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 620  * was received.  We need to ensure we receive the statistics in order
 621  * to update the temperature used for calibrating the TXPOWER.
 622  */
 623 static void iwl_bg_statistics_periodic(unsigned long data)
 624 {
 625         struct iwl_priv *priv = (struct iwl_priv *)data;
 626
 627         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 628                 return;
 629
 630         /* dont send host command if rf-kill is on */
 631         if (!iwl_is_ready_rf(priv))
 632                 return;
 633
 634         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 635 }
 636
 637
 638 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 639                                         u32 start_idx, u32 num_events,
 640                                         u32 mode)
 641 {
 642         u32 i;
 643         u32 ptr;        /* SRAM byte address of log data */
 644         u32 ev, time, data; /* event log data */
 645         unsigned long reg_flags;
 646
 647         if (mode == 0)
 648                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 649         else
 650                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 651
 652         /* Make sure device is powered up for SRAM reads */
 653         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 654         if (iwl_grab_nic_access(priv)) {
 655                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 656                 return;
 657         }
 658
 659         /* Set starting address; reads will auto-increment */
 660         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
 661         rmb();
 662
 663         /*
 664          * "time" is actually "data" for mode 0 (no timestamp).
 665          * place event id # at far right for easier visual parsing.
 666          */
 667         for (i = 0; i < num_events; i++) {
 668                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 669                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 670                 if (mode == 0) {
 671                         trace_iwlwifi_dev_ucode_cont_event(priv,
 672                                                         0, time, ev);
 673                 } else {
 674                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 675                         trace_iwlwifi_dev_ucode_cont_event(priv,
 676                                                 time, data, ev);
 677                 }
 678         }
 679         /* Allow device to power down */
 680         iwl_release_nic_access(priv);
 681         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 682 }
 683
 684 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 685 {
 686         u32 capacity;   /* event log capacity in # entries */
 687         u32 base;       /* SRAM byte address of event log header */
 688         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 689         u32 num_wraps;  /* # times uCode wrapped to top of log */
 690         u32 next_entry; /* index of next entry to be written by uCode */
 691
 692         if (priv->ucode_type == UCODE_INIT)
 693                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
 694         else
 695                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
 696         if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
 697                 capacity = iwl_read_targ_mem(priv, base);
 698                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 699                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 700                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 701         } else
 702                 return;
 703
 704         if (num_wraps == priv->event_log.num_wraps) {
 705                 iwl_print_cont_event_trace(priv,
 706                                        base, priv->event_log.next_entry,
 707                                        next_entry - priv->event_log.next_entry,
 708                                        mode);
 709                 priv->event_log.non_wraps_count++;
 710         } else {
 711                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 712                         priv->event_log.wraps_more_count++;
 713                 else
 714                         priv->event_log.wraps_once_count++;
 715                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 716                                 num_wraps - priv->event_log.num_wraps,
 717                                 next_entry, priv->event_log.next_entry);
 718                 if (next_entry < priv->event_log.next_entry) {
 719                         iwl_print_cont_event_trace(priv, base,
 720                                priv->event_log.next_entry,
 721                                capacity - priv->event_log.next_entry,
 722                                mode);
 723
 724                         iwl_print_cont_event_trace(priv, base, 0,
 725                                 next_entry, mode);
 726                 } else {
 727                         iwl_print_cont_event_trace(priv, base,
 728                                next_entry, capacity - next_entry,
 729                                mode);
 730
 731                         iwl_print_cont_event_trace(priv, base, 0,
 732                                 next_entry, mode);
 733                 }
 734         }
 735         priv->event_log.num_wraps = num_wraps;
 736         priv->event_log.next_entry = next_entry;
 737 }
 738
 739 /**
 740  * iwl_bg_ucode_trace - Timer callback to log ucode event
 741  *
 742  * The timer is continually set to execute every
 743  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 744  * this function is to perform continuous uCode event logging operation
 745  * if enabled
 746  */
 747 static void iwl_bg_ucode_trace(unsigned long data)
 748 {
 749         struct iwl_priv *priv = (struct iwl_priv *)data;
 750
 751         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 752                 return;
 753
 754         if (priv->event_log.ucode_trace) {
 755                 iwl_continuous_event_trace(priv);
 756                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 757                 mod_timer(&priv->ucode_trace,
 758                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 759         }
 760 }
 761
 762 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 763                                 struct iwl_rx_mem_buffer *rxb)
 764 {
 765 #ifdef CONFIG_IWLWIFI_DEBUG
 766         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 767         struct iwl4965_beacon_notif *beacon =
 768                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 769         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 770
 771         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 772                 "tsf %d %d rate %d\n",
 773                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 774                 beacon->beacon_notify_hdr.failure_frame,
 775                 le32_to_cpu(beacon->ibss_mgr_status),
 776                 le32_to_cpu(beacon->high_tsf),
 777                 le32_to_cpu(beacon->low_tsf), rate);
 778 #endif
 779
 780         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 781             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 782                 queue_work(priv->workqueue, &priv->beacon_update);
 783 }
 784
 785 /* Handle notification from uCode that card's power state is changing
 786  * due to software, hardware, or critical temperature RFKILL */
 787 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 788                                     struct iwl_rx_mem_buffer *rxb)
 789 {
 790         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 791         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 792         unsigned long status = priv->status;
 793
 794         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
 795                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 796                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 797                           (flags & CT_CARD_DISABLED) ?
 798                           "Reached" : "Not reached");
 799
 800         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 801                      CT_CARD_DISABLED)) {
 802
 803                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 804                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 805
 806                 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 807                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 808
 809                 if (!(flags & RXON_CARD_DISABLED)) {
 810                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 811                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 812                         iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 813                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 814                 }
 815                 if (flags & CT_CARD_DISABLED)
 816                         iwl_tt_enter_ct_kill(priv);
 817         }
 818         if (!(flags & CT_CARD_DISABLED))
 819                 iwl_tt_exit_ct_kill(priv);
 820
 821         if (flags & HW_CARD_DISABLED)
 822                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 823         else
 824                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 825
 826
 827         if (!(flags & RXON_CARD_DISABLED))
 828                 iwl_scan_cancel(priv);
 829
 830         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 831              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 832                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 833                         test_bit(STATUS_RF_KILL_HW, &priv->status));
 834         else
 835                 wake_up_interruptible(&priv->wait_command_queue);
 836 }
 837
 838 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 839 {
 840         if (src == IWL_PWR_SRC_VAUX) {
 841                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
 842                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 843                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 844                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 845         } else {
 846                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 847                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 848                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 849         }
 850
 851         return 0;
 852 }
 853
 854 /**
 855  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 856  *
 857  * Setup the RX handlers for each of the reply types sent from the uCode
 858  * to the host.
 859  *
 860  * This function chains into the hardware specific files for them to setup
 861  * any hardware specific handlers as well.
 862  */
 863 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 864 {
 865         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 866         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 867         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 868         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
 869                         iwl_rx_spectrum_measure_notif;
 870         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 871         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 872             iwl_rx_pm_debug_statistics_notif;
 873         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 874
 875         /*
 876          * The same handler is used for both the REPLY to a discrete
 877          * statistics request from the host as well as for the periodic
 878          * statistics notifications (after received beacons) from the uCode.
 879          */
 880         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
 881         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 882
 883         iwl_setup_rx_scan_handlers(priv);
 884
 885         /* status change handler */
 886         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 887
 888         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 889             iwl_rx_missed_beacon_notif;
 890         /* Rx handlers */
 891         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
 892         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
 893         /* block ack */
 894         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
 895         /* Set up hardware specific Rx handlers */
 896         priv->cfg->ops->lib->rx_handler_setup(priv);
 897 }
 898
 899 /**
 900  * iwl_rx_handle - Main entry function for receiving responses from uCode
 901  *
 902  * Uses the priv->rx_handlers callback function array to invoke
 903  * the appropriate handlers, including command responses,
 904  * frame-received notifications, and other notifications.
 905  */
 906 void iwl_rx_handle(struct iwl_priv *priv)
 907 {
 908         struct iwl_rx_mem_buffer *rxb;
 909         struct iwl_rx_packet *pkt;
 910         struct iwl_rx_queue *rxq = &priv->rxq;
 911         u32 r, i;
 912         int reclaim;
 913         unsigned long flags;
 914         u8 fill_rx = 0;
 915         u32 count = 8;
 916         int total_empty;
 917
 918         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 919          * buffer that the driver may process (last buffer filled by ucode). */
 920         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 921         i = rxq->read;
 922
 923         /* Rx interrupt, but nothing sent from uCode */
 924         if (i == r)
 925                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
 926
 927         /* calculate total frames need to be restock after handling RX */
 928         total_empty = r - rxq->write_actual;
 929         if (total_empty < 0)
 930                 total_empty += RX_QUEUE_SIZE;
 931
 932         if (total_empty > (RX_QUEUE_SIZE / 2))
 933                 fill_rx = 1;
 934
 935         while (i != r) {
 936                 rxb = rxq->queue[i];
 937
 938                 /* If an RXB doesn't have a Rx queue slot associated with it,
 939                  * then a bug has been introduced in the queue refilling
 940                  * routines -- catch it here */
 941                 BUG_ON(rxb == NULL);
 942
 943                 rxq->queue[i] = NULL;
 944
 945                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
 946                                PAGE_SIZE << priv->hw_params.rx_page_order,
 947                                PCI_DMA_FROMDEVICE);
 948                 pkt = rxb_addr(rxb);
 949
 950                 trace_iwlwifi_dev_rx(priv, pkt,
 951                         le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
 952
 953                 /* Reclaim a command buffer only if this packet is a response
 954                  *   to a (driver-originated) command.
 955                  * If the packet (e.g. Rx frame) originated from uCode,
 956                  *   there is no command buffer to reclaim.
 957                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 958                  *   but apparently a few don't get set; catch them here. */
 959                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
 960                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
 961                         (pkt->hdr.cmd != REPLY_RX) &&
 962                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
 963                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
 964                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
 965                         (pkt->hdr.cmd != REPLY_TX);
 966
 967                 /* Based on type of command response or notification,
 968                  *   handle those that need handling via function in
 969                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
 970                 if (priv->rx_handlers[pkt->hdr.cmd]) {
 971                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
 972                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
 973                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
 974                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
 975                 } else {
 976                         /* No handling needed */
 977                         IWL_DEBUG_RX(priv,
 978                                 "r %d i %d No handler needed for %s, 0x%02x\n",
 979                                 r, i, get_cmd_string(pkt->hdr.cmd),
 980                                 pkt->hdr.cmd);
 981                 }
 982
 983                 /*
 984                  * XXX: After here, we should always check rxb->page
 985                  * against NULL before touching it or its virtual
 986                  * memory (pkt). Because some rx_handler might have
 987                  * already taken or freed the pages.
 988                  */
 989
 990                 if (reclaim) {
 991                         /* Invoke any callbacks, transfer the buffer to caller,
 992                          * and fire off the (possibly) blocking iwl_send_cmd()
 993                          * as we reclaim the driver command queue */
 994                         if (rxb->page)
 995                                 iwl_tx_cmd_complete(priv, rxb);
 996                         else
 997                                 IWL_WARN(priv, "Claim null rxb?\n");
 998                 }
 999
1000                 /* Reuse the page if possible. For notification packets and
1001                  * SKBs that fail to Rx correctly, add them back into the
1002                  * rx_free list for reuse later. */
1003                 spin_lock_irqsave(&rxq->lock, flags);
1004                 if (rxb->page != NULL) {
1005                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1006                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1007                                 PCI_DMA_FROMDEVICE);
1008                         list_add_tail(&rxb->list, &rxq->rx_free);
1009                         rxq->free_count++;
1010                 } else
1011                         list_add_tail(&rxb->list, &rxq->rx_used);
1012
1013                 spin_unlock_irqrestore(&rxq->lock, flags);
1014
1015                 i = (i + 1) & RX_QUEUE_MASK;
1016                 /* If there are a lot of unused frames,
1017                  * restock the Rx queue so ucode wont assert. */
1018                 if (fill_rx) {
1019                         count++;
1020                         if (count >= 8) {
1021                                 rxq->read = i;
1022                                 iwlagn_rx_replenish_now(priv);
1023                                 count = 0;
1024                         }
1025                 }
1026         }
1027
1028         /* Backtrack one entry */
1029         rxq->read = i;
1030         if (fill_rx)
1031                 iwlagn_rx_replenish_now(priv);
1032         else
1033                 iwlagn_rx_queue_restock(priv);
1034 }
1035
1036 /* call this function to flush any scheduled tasklet */
1037 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1038 {
1039         /* wait to make sure we flush pending tasklet*/
1040         synchronize_irq(priv->pci_dev->irq);
1041         tasklet_kill(&priv->irq_tasklet);
1042 }
1043
1044 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1045 {
1046         u32 inta, handled = 0;
1047         u32 inta_fh;
1048         unsigned long flags;
1049         u32 i;
1050 #ifdef CONFIG_IWLWIFI_DEBUG
1051         u32 inta_mask;
1052 #endif
1053
1054         spin_lock_irqsave(&priv->lock, flags);
1055
1056         /* Ack/clear/reset pending uCode interrupts.
1057          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1058          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1059         inta = iwl_read32(priv, CSR_INT);
1060         iwl_write32(priv, CSR_INT, inta);
1061
1062         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1063          * Any new interrupts that happen after this, either while we're
1064          * in this tasklet, or later, will show up in next ISR/tasklet. */
1065         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1066         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1067
1068 #ifdef CONFIG_IWLWIFI_DEBUG
1069         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1070                 /* just for debug */
1071                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1072                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1073                               inta, inta_mask, inta_fh);
1074         }
1075 #endif
1076
1077         spin_unlock_irqrestore(&priv->lock, flags);
1078
1079         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1080          * atomic, make sure that inta covers all the interrupts that
1081          * we've discovered, even if FH interrupt came in just after
1082          * reading CSR_INT. */
1083         if (inta_fh & CSR49_FH_INT_RX_MASK)
1084                 inta |= CSR_INT_BIT_FH_RX;
1085         if (inta_fh & CSR49_FH_INT_TX_MASK)
1086                 inta |= CSR_INT_BIT_FH_TX;
1087
1088         /* Now service all interrupt bits discovered above. */
1089         if (inta & CSR_INT_BIT_HW_ERR) {
1090                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1091
1092                 /* Tell the device to stop sending interrupts */
1093                 iwl_disable_interrupts(priv);
1094
1095                 priv->isr_stats.hw++;
1096                 iwl_irq_handle_error(priv);
1097
1098                 handled |= CSR_INT_BIT_HW_ERR;
1099
1100                 return;
1101         }
1102
1103 #ifdef CONFIG_IWLWIFI_DEBUG
1104         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1105                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1106                 if (inta & CSR_INT_BIT_SCD) {
1107                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1108                                       "the frame/frames.\n");
1109                         priv->isr_stats.sch++;
1110                 }
1111
1112                 /* Alive notification via Rx interrupt will do the real work */
1113                 if (inta & CSR_INT_BIT_ALIVE) {
1114                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1115                         priv->isr_stats.alive++;
1116                 }
1117         }
1118 #endif
1119         /* Safely ignore these bits for debug checks below */
1120         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1121
1122         /* HW RF KILL switch toggled */
1123         if (inta & CSR_INT_BIT_RF_KILL) {
1124                 int hw_rf_kill = 0;
1125                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1126                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1127                         hw_rf_kill = 1;
1128
1129                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1130                                 hw_rf_kill ? "disable radio" : "enable radio");
1131
1132                 priv->isr_stats.rfkill++;
1133
1134                 /* driver only loads ucode once setting the interface up.
1135                  * the driver allows loading the ucode even if the radio
1136                  * is killed. Hence update the killswitch state here. The
1137                  * rfkill handler will care about restarting if needed.
1138                  */
1139                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1140                         if (hw_rf_kill)
1141                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1142                         else
1143                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1144                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1145                 }
1146
1147                 handled |= CSR_INT_BIT_RF_KILL;
1148         }
1149
1150         /* Chip got too hot and stopped itself */
1151         if (inta & CSR_INT_BIT_CT_KILL) {
1152                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1153                 priv->isr_stats.ctkill++;
1154                 handled |= CSR_INT_BIT_CT_KILL;
1155         }
1156
1157         /* Error detected by uCode */
1158         if (inta & CSR_INT_BIT_SW_ERR) {
1159                 IWL_ERR(priv, "Microcode SW error detected. "
1160                         " Restarting 0x%X.\n", inta);
1161                 priv->isr_stats.sw++;
1162                 priv->isr_stats.sw_err = inta;
1163                 iwl_irq_handle_error(priv);
1164                 handled |= CSR_INT_BIT_SW_ERR;
1165         }
1166
1167         /*
1168          * uCode wakes up after power-down sleep.
1169          * Tell device about any new tx or host commands enqueued,
1170          * and about any Rx buffers made available while asleep.
1171          */
1172         if (inta & CSR_INT_BIT_WAKEUP) {
1173                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1174                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1175                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1176                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1177                 priv->isr_stats.wakeup++;
1178                 handled |= CSR_INT_BIT_WAKEUP;
1179         }
1180
1181         /* All uCode command responses, including Tx command responses,
1182          * Rx "responses" (frame-received notification), and other
1183          * notifications from uCode come through here*/
1184         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1185                 iwl_rx_handle(priv);
1186                 priv->isr_stats.rx++;
1187                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1188         }
1189
1190         /* This "Tx" DMA channel is used only for loading uCode */
1191         if (inta & CSR_INT_BIT_FH_TX) {
1192                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1193                 priv->isr_stats.tx++;
1194                 handled |= CSR_INT_BIT_FH_TX;
1195                 /* Wake up uCode load routine, now that load is complete */
1196                 priv->ucode_write_complete = 1;
1197                 wake_up_interruptible(&priv->wait_command_queue);
1198         }
1199
1200         if (inta & ~handled) {
1201                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1202                 priv->isr_stats.unhandled++;
1203         }
1204
1205         if (inta & ~(priv->inta_mask)) {
1206                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1207                          inta & ~priv->inta_mask);
1208                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1209         }
1210
1211         /* Re-enable all interrupts */
1212         /* only Re-enable if diabled by irq */
1213         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1214                 iwl_enable_interrupts(priv);
1215
1216 #ifdef CONFIG_IWLWIFI_DEBUG
1217         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1218                 inta = iwl_read32(priv, CSR_INT);
1219                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1220                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1221                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1222                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1223         }
1224 #endif
1225 }
1226
1227 /* tasklet for iwlagn interrupt */
1228 static void iwl_irq_tasklet(struct iwl_priv *priv)
1229 {
1230         u32 inta = 0;
1231         u32 handled = 0;
1232         unsigned long flags;
1233         u32 i;
1234 #ifdef CONFIG_IWLWIFI_DEBUG
1235         u32 inta_mask;
1236 #endif
1237
1238         spin_lock_irqsave(&priv->lock, flags);
1239
1240         /* Ack/clear/reset pending uCode interrupts.
1241          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1242          */
1243         /* There is a hardware bug in the interrupt mask function that some
1244          * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1245          * they are disabled in the CSR_INT_MASK register. Furthermore the
1246          * ICT interrupt handling mechanism has another bug that might cause
1247          * these unmasked interrupts fail to be detected. We workaround the
1248          * hardware bugs here by ACKing all the possible interrupts so that
1249          * interrupt coalescing can still be achieved.
1250          */
1251         iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
1252
1253         inta = priv->_agn.inta;
1254
1255 #ifdef CONFIG_IWLWIFI_DEBUG
1256         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1257                 /* just for debug */
1258                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1259                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1260                                 inta, inta_mask);
1261         }
1262 #endif
1263
1264         spin_unlock_irqrestore(&priv->lock, flags);
1265
1266         /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1267         priv->_agn.inta = 0;
1268
1269         /* Now service all interrupt bits discovered above. */
1270         if (inta & CSR_INT_BIT_HW_ERR) {
1271                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1272
1273                 /* Tell the device to stop sending interrupts */
1274                 iwl_disable_interrupts(priv);
1275
1276                 priv->isr_stats.hw++;
1277                 iwl_irq_handle_error(priv);
1278
1279                 handled |= CSR_INT_BIT_HW_ERR;
1280
1281                 return;
1282         }
1283
1284 #ifdef CONFIG_IWLWIFI_DEBUG
1285         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1286                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1287                 if (inta & CSR_INT_BIT_SCD) {
1288                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1289                                       "the frame/frames.\n");
1290                         priv->isr_stats.sch++;
1291                 }
1292
1293                 /* Alive notification via Rx interrupt will do the real work */
1294                 if (inta & CSR_INT_BIT_ALIVE) {
1295                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1296                         priv->isr_stats.alive++;
1297                 }
1298         }
1299 #endif
1300         /* Safely ignore these bits for debug checks below */
1301         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1302
1303         /* HW RF KILL switch toggled */
1304         if (inta & CSR_INT_BIT_RF_KILL) {
1305                 int hw_rf_kill = 0;
1306                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1307                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1308                         hw_rf_kill = 1;
1309
1310                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1311                                 hw_rf_kill ? "disable radio" : "enable radio");
1312
1313                 priv->isr_stats.rfkill++;
1314
1315                 /* driver only loads ucode once setting the interface up.
1316                  * the driver allows loading the ucode even if the radio
1317                  * is killed. Hence update the killswitch state here. The
1318                  * rfkill handler will care about restarting if needed.
1319                  */
1320                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1321                         if (hw_rf_kill)
1322                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1323                         else
1324                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1325                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1326                 }
1327
1328                 handled |= CSR_INT_BIT_RF_KILL;
1329         }
1330
1331         /* Chip got too hot and stopped itself */
1332         if (inta & CSR_INT_BIT_CT_KILL) {
1333                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1334                 priv->isr_stats.ctkill++;
1335                 handled |= CSR_INT_BIT_CT_KILL;
1336         }
1337
1338         /* Error detected by uCode */
1339         if (inta & CSR_INT_BIT_SW_ERR) {
1340                 IWL_ERR(priv, "Microcode SW error detected. "
1341                         " Restarting 0x%X.\n", inta);
1342                 priv->isr_stats.sw++;
1343                 priv->isr_stats.sw_err = inta;
1344                 iwl_irq_handle_error(priv);
1345                 handled |= CSR_INT_BIT_SW_ERR;
1346         }
1347
1348         /* uCode wakes up after power-down sleep */
1349         if (inta & CSR_INT_BIT_WAKEUP) {
1350                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1351                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1352                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1353                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1354
1355                 priv->isr_stats.wakeup++;
1356
1357                 handled |= CSR_INT_BIT_WAKEUP;
1358         }
1359
1360         /* All uCode command responses, including Tx command responses,
1361          * Rx "responses" (frame-received notification), and other
1362          * notifications from uCode come through here*/
1363         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1364                         CSR_INT_BIT_RX_PERIODIC)) {
1365                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1366                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1367                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1368                         iwl_write32(priv, CSR_FH_INT_STATUS,
1369                                         CSR49_FH_INT_RX_MASK);
1370                 }
1371                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1372                         handled |= CSR_INT_BIT_RX_PERIODIC;
1373                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1374                 }
1375                 /* Sending RX interrupt require many steps to be done in the
1376                  * the device:
1377                  * 1- write interrupt to current index in ICT table.
1378                  * 2- dma RX frame.
1379                  * 3- update RX shared data to indicate last write index.
1380                  * 4- send interrupt.
1381                  * This could lead to RX race, driver could receive RX interrupt
1382                  * but the shared data changes does not reflect this;
1383                  * periodic interrupt will detect any dangling Rx activity.
1384                  */
1385
1386                 /* Disable periodic interrupt; we use it as just a one-shot. */
1387                 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1388                             CSR_INT_PERIODIC_DIS);
1389                 iwl_rx_handle(priv);
1390
1391                 /*
1392                  * Enable periodic interrupt in 8 msec only if we received
1393                  * real RX interrupt (instead of just periodic int), to catch
1394                  * any dangling Rx interrupt.  If it was just the periodic
1395                  * interrupt, there was no dangling Rx activity, and no need
1396                  * to extend the periodic interrupt; one-shot is enough.
1397                  */
1398                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1399                         iwl_write8(priv, CSR_INT_PERIODIC_REG,
1400                                     CSR_INT_PERIODIC_ENA);
1401
1402                 priv->isr_stats.rx++;
1403         }
1404
1405         /* This "Tx" DMA channel is used only for loading uCode */
1406         if (inta & CSR_INT_BIT_FH_TX) {
1407                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1408                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1409                 priv->isr_stats.tx++;
1410                 handled |= CSR_INT_BIT_FH_TX;
1411                 /* Wake up uCode load routine, now that load is complete */
1412                 priv->ucode_write_complete = 1;
1413                 wake_up_interruptible(&priv->wait_command_queue);
1414         }
1415
1416         if (inta & ~handled) {
1417                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1418                 priv->isr_stats.unhandled++;
1419         }
1420
1421         if (inta & ~(priv->inta_mask)) {
1422                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1423                          inta & ~priv->inta_mask);
1424         }
1425
1426         /* Re-enable all interrupts */
1427         /* only Re-enable if diabled by irq */
1428         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1429                 iwl_enable_interrupts(priv);
1430 }
1431
1432 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1433 #define ACK_CNT_RATIO (50)
1434 #define BA_TIMEOUT_CNT (5)
1435 #define BA_TIMEOUT_MAX (16)
1436
1437 /**
1438  * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1439  *
1440  * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1441  * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1442  * operation state.
1443  */
1444 bool iwl_good_ack_health(struct iwl_priv *priv,
1445                                 struct iwl_rx_packet *pkt)
1446 {
1447         bool rc = true;
1448         int actual_ack_cnt_delta, expected_ack_cnt_delta;
1449         int ba_timeout_delta;
1450
1451         actual_ack_cnt_delta =
1452                 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1453                 le32_to_cpu(priv->statistics.tx.actual_ack_cnt);
1454         expected_ack_cnt_delta =
1455                 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1456                 le32_to_cpu(priv->statistics.tx.expected_ack_cnt);
1457         ba_timeout_delta =
1458                 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1459                 le32_to_cpu(priv->statistics.tx.agg.ba_timeout);
1460         if ((priv->_agn.agg_tids_count > 0) &&
1461             (expected_ack_cnt_delta > 0) &&
1462             (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1463                 < ACK_CNT_RATIO) &&
1464             (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1465                 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1466                                 " expected_ack_cnt = %d\n",
1467                                 actual_ack_cnt_delta, expected_ack_cnt_delta);
1468
1469 #ifdef CONFIG_IWLWIFI_DEBUG
1470                 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1471                                 priv->delta_statistics.tx.rx_detected_cnt);
1472                 IWL_DEBUG_RADIO(priv,
1473                                 "ack_or_ba_timeout_collision delta = %d\n",
1474                                 priv->delta_statistics.tx.
1475                                 ack_or_ba_timeout_collision);
1476 #endif
1477                 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1478                                 ba_timeout_delta);
1479                 if (!actual_ack_cnt_delta &&
1480                     (ba_timeout_delta >= BA_TIMEOUT_MAX))
1481                         rc = false;
1482         }
1483         return rc;
1484 }
1485
1486
1487 /******************************************************************************
1488  *
1489  * uCode download functions
1490  *
1491  ******************************************************************************/
1492
1493 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1494 {
1495         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1496         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1497         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1498         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1499         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1500         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1501 }
1502
1503 static void iwl_nic_start(struct iwl_priv *priv)
1504 {
1505         /* Remove all resets to allow NIC to operate */
1506         iwl_write32(priv, CSR_RESET, 0);
1507 }
1508
1509
1510 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1511 static int iwl_mac_setup_register(struct iwl_priv *priv);
1512
1513 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1514 {
1515         const char *name_pre = priv->cfg->fw_name_pre;
1516
1517         if (first)
1518                 priv->fw_index = priv->cfg->ucode_api_max;
1519         else
1520                 priv->fw_index--;
1521
1522         if (priv->fw_index < priv->cfg->ucode_api_min) {
1523                 IWL_ERR(priv, "no suitable firmware found!\n");
1524                 return -ENOENT;
1525         }
1526
1527         sprintf(priv->firmware_name, "%s%d%s",
1528                 name_pre, priv->fw_index, ".ucode");
1529
1530         IWL_DEBUG_INFO(priv, "attempting to load firmware '%s'\n",
1531                        priv->firmware_name);
1532
1533         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1534                                        &priv->pci_dev->dev, GFP_KERNEL, priv,
1535                                        iwl_ucode_callback);
1536 }
1537
1538 /**
1539  * iwl_ucode_callback - callback when firmware was loaded
1540  *
1541  * If loaded successfully, copies the firmware into buffers
1542  * for the card to fetch (via DMA).
1543  */
1544 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1545 {
1546         struct iwl_priv *priv = context;
1547         struct iwl_ucode_header *ucode;
1548         const unsigned int api_max = priv->cfg->ucode_api_max;
1549         const unsigned int api_min = priv->cfg->ucode_api_min;
1550         u8 *src;
1551         size_t len;
1552         u32 api_ver, build;
1553         u32 inst_size, data_size, init_size, init_data_size, boot_size;
1554         int err;
1555         u16 eeprom_ver;
1556
1557         if (!ucode_raw) {
1558                 IWL_ERR(priv, "request for firmware file '%s' failed.\n",
1559                         priv->firmware_name);
1560                 goto try_again;
1561         }
1562
1563         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1564                        priv->firmware_name, ucode_raw->size);
1565
1566         /* Make sure that we got at least the v1 header! */
1567         if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
1568                 IWL_ERR(priv, "File size way too small!\n");
1569                 goto try_again;
1570         }
1571
1572         /* Data from ucode file:  header followed by uCode images */
1573         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1574
1575         priv->ucode_ver = le32_to_cpu(ucode->ver);
1576         api_ver = IWL_UCODE_API(priv->ucode_ver);
1577         build = priv->cfg->ops->ucode->get_build(ucode, api_ver);
1578         inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
1579         data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
1580         init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
1581         init_data_size =
1582                 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
1583         boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
1584         src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
1585
1586         /* api_ver should match the api version forming part of the
1587          * firmware filename ... but we don't check for that and only rely
1588          * on the API version read from firmware header from here on forward */
1589
1590         if (api_ver < api_min || api_ver > api_max) {
1591                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1592                           "Driver supports v%u, firmware is v%u.\n",
1593                           api_max, api_ver);
1594                 goto try_again;
1595         }
1596
1597         if (api_ver != api_max)
1598                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1599                           "got v%u. New firmware can be obtained "
1600                           "from http://www.intellinuxwireless.org.\n",
1601                           api_max, api_ver);
1602
1603         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1604                IWL_UCODE_MAJOR(priv->ucode_ver),
1605                IWL_UCODE_MINOR(priv->ucode_ver),
1606                IWL_UCODE_API(priv->ucode_ver),
1607                IWL_UCODE_SERIAL(priv->ucode_ver));
1608
1609         snprintf(priv->hw->wiphy->fw_version,
1610                  sizeof(priv->hw->wiphy->fw_version),
1611                  "%u.%u.%u.%u",
1612                  IWL_UCODE_MAJOR(priv->ucode_ver),
1613                  IWL_UCODE_MINOR(priv->ucode_ver),
1614                  IWL_UCODE_API(priv->ucode_ver),
1615                  IWL_UCODE_SERIAL(priv->ucode_ver));
1616
1617         if (build)
1618                 IWL_DEBUG_INFO(priv, "Build %u\n", build);
1619
1620         eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
1621         IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
1622                        (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
1623                        ? "OTP" : "EEPROM", eeprom_ver);
1624
1625         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1626                        priv->ucode_ver);
1627         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1628                        inst_size);
1629         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1630                        data_size);
1631         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1632                        init_size);
1633         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1634                        init_data_size);
1635         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1636                        boot_size);
1637
1638         /*
1639          * For any of the failures below (before allocating pci memory)
1640          * we will try to load a version with a smaller API -- maybe the
1641          * user just got a corrupted version of the latest API.
1642          */
1643
1644         /* Verify size of file vs. image size info in file's header */
1645         if (ucode_raw->size !=
1646                 priv->cfg->ops->ucode->get_header_size(api_ver) +
1647                 inst_size + data_size + init_size +
1648                 init_data_size + boot_size) {
1649
1650                 IWL_DEBUG_INFO(priv,
1651                         "uCode file size %d does not match expected size\n",
1652                         (int)ucode_raw->size);
1653                 goto try_again;
1654         }
1655
1656         /* Verify that uCode images will fit in card's SRAM */
1657         if (inst_size > priv->hw_params.max_inst_size) {
1658                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1659                                inst_size);
1660                 goto try_again;
1661         }
1662
1663         if (data_size > priv->hw_params.max_data_size) {
1664                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1665                                 data_size);
1666                 goto try_again;
1667         }
1668         if (init_size > priv->hw_params.max_inst_size) {
1669                 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1670                         init_size);
1671                 goto try_again;
1672         }
1673         if (init_data_size > priv->hw_params.max_data_size) {
1674                 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1675                       init_data_size);
1676                 goto try_again;
1677         }
1678         if (boot_size > priv->hw_params.max_bsm_size) {
1679                 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1680                         boot_size);
1681                 goto try_again;
1682         }
1683
1684         /* Allocate ucode buffers for card's bus-master loading ... */
1685
1686         /* Runtime instructions and 2 copies of data:
1687          * 1) unmodified from disk
1688          * 2) backup cache for save/restore during power-downs */
1689         priv->ucode_code.len = inst_size;
1690         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1691
1692         priv->ucode_data.len = data_size;
1693         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1694
1695         priv->ucode_data_backup.len = data_size;
1696         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1697
1698         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1699             !priv->ucode_data_backup.v_addr)
1700                 goto err_pci_alloc;
1701
1702         /* Initialization instructions and data */
1703         if (init_size && init_data_size) {
1704                 priv->ucode_init.len = init_size;
1705                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1706
1707                 priv->ucode_init_data.len = init_data_size;
1708                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1709
1710                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1711                         goto err_pci_alloc;
1712         }
1713
1714         /* Bootstrap (instructions only, no data) */
1715         if (boot_size) {
1716                 priv->ucode_boot.len = boot_size;
1717                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1718
1719                 if (!priv->ucode_boot.v_addr)
1720                         goto err_pci_alloc;
1721         }
1722
1723         /* Copy images into buffers for card's bus-master reads ... */
1724
1725         /* Runtime instructions (first block of data in file) */
1726         len = inst_size;
1727         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1728         memcpy(priv->ucode_code.v_addr, src, len);
1729         src += len;
1730
1731         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1732                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1733
1734         /* Runtime data (2nd block)
1735          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1736         len = data_size;
1737         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1738         memcpy(priv->ucode_data.v_addr, src, len);
1739         memcpy(priv->ucode_data_backup.v_addr, src, len);
1740         src += len;
1741
1742         /* Initialization instructions (3rd block) */
1743         if (init_size) {
1744                 len = init_size;
1745                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1746                                 len);
1747                 memcpy(priv->ucode_init.v_addr, src, len);
1748                 src += len;
1749         }
1750
1751         /* Initialization data (4th block) */
1752         if (init_data_size) {
1753                 len = init_data_size;
1754                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1755                                len);
1756                 memcpy(priv->ucode_init_data.v_addr, src, len);
1757                 src += len;
1758         }
1759
1760         /* Bootstrap instructions (5th block) */
1761         len = boot_size;
1762         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1763         memcpy(priv->ucode_boot.v_addr, src, len);
1764
1765         /**************************************************
1766          * This is still part of probe() in a sense...
1767          *
1768          * 9. Setup and register with mac80211 and debugfs
1769          **************************************************/
1770         err = iwl_mac_setup_register(priv);
1771         if (err)
1772                 goto out_unbind;
1773
1774         err = iwl_dbgfs_register(priv, DRV_NAME);
1775         if (err)
1776                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1777
1778         /* We have our copies now, allow OS release its copies */
1779         release_firmware(ucode_raw);
1780         return;
1781
1782  try_again:
1783         /* try next, if any */
1784         if (iwl_request_firmware(priv, false))
1785                 goto out_unbind;
1786         release_firmware(ucode_raw);
1787         return;
1788
1789  err_pci_alloc:
1790         IWL_ERR(priv, "failed to allocate pci memory\n");
1791         iwl_dealloc_ucode_pci(priv);
1792  out_unbind:
1793         device_release_driver(&priv->pci_dev->dev);
1794         release_firmware(ucode_raw);
1795 }
1796
1797 static const char *desc_lookup_text[] = {
1798         "OK",
1799         "FAIL",
1800         "BAD_PARAM",
1801         "BAD_CHECKSUM",
1802         "NMI_INTERRUPT_WDG",
1803         "SYSASSERT",
1804         "FATAL_ERROR",
1805         "BAD_COMMAND",
1806         "HW_ERROR_TUNE_LOCK",
1807         "HW_ERROR_TEMPERATURE",
1808         "ILLEGAL_CHAN_FREQ",
1809         "VCC_NOT_STABLE",
1810         "FH_ERROR",
1811         "NMI_INTERRUPT_HOST",
1812         "NMI_INTERRUPT_ACTION_PT",
1813         "NMI_INTERRUPT_UNKNOWN",
1814         "UCODE_VERSION_MISMATCH",
1815         "HW_ERROR_ABS_LOCK",
1816         "HW_ERROR_CAL_LOCK_FAIL",
1817         "NMI_INTERRUPT_INST_ACTION_PT",
1818         "NMI_INTERRUPT_DATA_ACTION_PT",
1819         "NMI_TRM_HW_ER",
1820         "NMI_INTERRUPT_TRM",
1821         "NMI_INTERRUPT_BREAK_POINT"
1822         "DEBUG_0",
1823         "DEBUG_1",
1824         "DEBUG_2",
1825         "DEBUG_3",
1826         "ADVANCED SYSASSERT"
1827 };
1828
1829 static const char *desc_lookup(int i)
1830 {
1831         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1832
1833         if (i < 0 || i > max)
1834                 i = max;
1835
1836         return desc_lookup_text[i];
1837 }
1838
1839 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1840 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1841
1842 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1843 {
1844         u32 data2, line;
1845         u32 desc, time, count, base, data1;
1846         u32 blink1, blink2, ilink1, ilink2;
1847         u32 pc, hcmd;
1848
1849         if (priv->ucode_type == UCODE_INIT)
1850                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1851         else
1852                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1853
1854         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1855                 IWL_ERR(priv,
1856                         "Not valid error log pointer 0x%08X for %s uCode\n",
1857                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
1858                 return;
1859         }
1860
1861         count = iwl_read_targ_mem(priv, base);
1862
1863         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1864                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1865                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1866                         priv->status, count);
1867         }
1868
1869         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1870         pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
1871         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1872         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1873         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1874         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1875         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1876         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1877         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1878         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1879         hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
1880
1881         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1882                                       blink1, blink2, ilink1, ilink2);
1883
1884         IWL_ERR(priv, "Desc                               Time       "
1885                 "data1      data2      line\n");
1886         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1887                 desc_lookup(desc), desc, time, data1, data2, line);
1888         IWL_ERR(priv, "pc      blink1  blink2  ilink1  ilink2  hcmd\n");
1889         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
1890                 pc, blink1, blink2, ilink1, ilink2, hcmd);
1891 }
1892
1893 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1894
1895 /**
1896  * iwl_print_event_log - Dump error event log to syslog
1897  *
1898  */
1899 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1900                                u32 num_events, u32 mode,
1901                                int pos, char **buf, size_t bufsz)
1902 {
1903         u32 i;
1904         u32 base;       /* SRAM byte address of event log header */
1905         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1906         u32 ptr;        /* SRAM byte address of log data */
1907         u32 ev, time, data; /* event log data */
1908         unsigned long reg_flags;
1909
1910         if (num_events == 0)
1911                 return pos;
1912         if (priv->ucode_type == UCODE_INIT)
1913                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1914         else
1915                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1916
1917         if (mode == 0)
1918                 event_size = 2 * sizeof(u32);
1919         else
1920                 event_size = 3 * sizeof(u32);
1921
1922         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1923
1924         /* Make sure device is powered up for SRAM reads */
1925         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1926         iwl_grab_nic_access(priv);
1927
1928         /* Set starting address; reads will auto-increment */
1929         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1930         rmb();
1931
1932         /* "time" is actually "data" for mode 0 (no timestamp).
1933         * place event id # at far right for easier visual parsing. */
1934         for (i = 0; i < num_events; i++) {
1935                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1936                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1937                 if (mode == 0) {
1938                         /* data, ev */
1939                         if (bufsz) {
1940                                 pos += scnprintf(*buf + pos, bufsz - pos,
1941                                                 "EVT_LOG:0x%08x:%04u\n",
1942                                                 time, ev);
1943                         } else {
1944                                 trace_iwlwifi_dev_ucode_event(priv, 0,
1945                                         time, ev);
1946                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1947                                         time, ev);
1948                         }
1949                 } else {
1950                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1951                         if (bufsz) {
1952                                 pos += scnprintf(*buf + pos, bufsz - pos,
1953                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1954                                                  time, data, ev);
1955                         } else {
1956                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1957                                         time, data, ev);
1958                                 trace_iwlwifi_dev_ucode_event(priv, time,
1959                                         data, ev);
1960                         }
1961                 }
1962         }
1963
1964         /* Allow device to power down */
1965         iwl_release_nic_access(priv);
1966         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1967         return pos;
1968 }
1969
1970 /**
1971  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1972  */
1973 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1974                                     u32 num_wraps, u32 next_entry,
1975                                     u32 size, u32 mode,
1976                                     int pos, char **buf, size_t bufsz)
1977 {
1978         /*
1979          * display the newest DEFAULT_LOG_ENTRIES entries
1980          * i.e the entries just before the next ont that uCode would fill.
1981          */
1982         if (num_wraps) {
1983                 if (next_entry < size) {
1984                         pos = iwl_print_event_log(priv,
1985                                                 capacity - (size - next_entry),
1986                                                 size - next_entry, mode,
1987                                                 pos, buf, bufsz);
1988                         pos = iwl_print_event_log(priv, 0,
1989                                                   next_entry, mode,
1990                                                   pos, buf, bufsz);
1991                 } else
1992                         pos = iwl_print_event_log(priv, next_entry - size,
1993                                                   size, mode, pos, buf, bufsz);
1994         } else {
1995                 if (next_entry < size) {
1996                         pos = iwl_print_event_log(priv, 0, next_entry,
1997                                                   mode, pos, buf, bufsz);
1998                 } else {
1999                         pos = iwl_print_event_log(priv, next_entry - size,
2000                                                   size, mode, pos, buf, bufsz);
2001                 }
2002         }
2003         return pos;
2004 }
2005
2006 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2007
2008 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2009                             char **buf, bool display)
2010 {
2011         u32 base;       /* SRAM byte address of event log header */
2012         u32 capacity;   /* event log capacity in # entries */
2013         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2014         u32 num_wraps;  /* # times uCode wrapped to top of log */
2015         u32 next_entry; /* index of next entry to be written by uCode */
2016         u32 size;       /* # entries that we'll print */
2017         int pos = 0;
2018         size_t bufsz = 0;
2019
2020         if (priv->ucode_type == UCODE_INIT)
2021                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2022         else
2023                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2024
2025         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2026                 IWL_ERR(priv,
2027                         "Invalid event log pointer 0x%08X for %s uCode\n",
2028                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2029                 return -EINVAL;
2030         }
2031
2032         /* event log header */
2033         capacity = iwl_read_targ_mem(priv, base);
2034         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2035         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2036         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2037
2038         if (capacity > priv->cfg->max_event_log_size) {
2039                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2040                         capacity, priv->cfg->max_event_log_size);
2041                 capacity = priv->cfg->max_event_log_size;
2042         }
2043
2044         if (next_entry > priv->cfg->max_event_log_size) {
2045                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2046                         next_entry, priv->cfg->max_event_log_size);
2047                 next_entry = priv->cfg->max_event_log_size;
2048         }
2049
2050         size = num_wraps ? capacity : next_entry;
2051
2052         /* bail out if nothing in log */
2053         if (size == 0) {
2054                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2055                 return pos;
2056         }
2057
2058 #ifdef CONFIG_IWLWIFI_DEBUG
2059         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2060                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2061                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2062 #else
2063         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2064                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2065 #endif
2066         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2067                 size);
2068
2069 #ifdef CONFIG_IWLWIFI_DEBUG
2070         if (display) {
2071                 if (full_log)
2072                         bufsz = capacity * 48;
2073                 else
2074                         bufsz = size * 48;
2075                 *buf = kmalloc(bufsz, GFP_KERNEL);
2076                 if (!*buf)
2077                         return -ENOMEM;
2078         }
2079         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2080                 /*
2081                  * if uCode has wrapped back to top of log,
2082                  * start at the oldest entry,
2083                  * i.e the next one that uCode would fill.
2084                  */
2085                 if (num_wraps)
2086                         pos = iwl_print_event_log(priv, next_entry,
2087                                                 capacity - next_entry, mode,
2088                                                 pos, buf, bufsz);
2089                 /* (then/else) start at top of log */
2090                 pos = iwl_print_event_log(priv, 0,
2091                                           next_entry, mode, pos, buf, bufsz);
2092         } else
2093                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2094                                                 next_entry, size, mode,
2095                                                 pos, buf, bufsz);
2096 #else
2097         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2098                                         next_entry, size, mode,
2099                                         pos, buf, bufsz);
2100 #endif
2101         return pos;
2102 }
2103
2104 /**
2105  * iwl_alive_start - called after REPLY_ALIVE notification received
2106  *                   from protocol/runtime uCode (initialization uCode's
2107  *                   Alive gets handled by iwl_init_alive_start()).
2108  */
2109 static void iwl_alive_start(struct iwl_priv *priv)
2110 {
2111         int ret = 0;
2112
2113         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2114
2115         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2116                 /* We had an error bringing up the hardware, so take it
2117                  * all the way back down so we can try again */
2118                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2119                 goto restart;
2120         }
2121
2122         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2123          * This is a paranoid check, because we would not have gotten the
2124          * "runtime" alive if code weren't properly loaded.  */
2125         if (iwl_verify_ucode(priv)) {
2126                 /* Runtime instruction load was bad;
2127                  * take it all the way back down so we can try again */
2128                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2129                 goto restart;
2130         }
2131
2132         ret = priv->cfg->ops->lib->alive_notify(priv);
2133         if (ret) {
2134                 IWL_WARN(priv,
2135                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
2136                 goto restart;
2137         }
2138
2139         /* After the ALIVE response, we can send host commands to the uCode */
2140         set_bit(STATUS_ALIVE, &priv->status);
2141
2142         if (priv->cfg->ops->lib->recover_from_tx_stall) {
2143                 /* Enable timer to monitor the driver queues */
2144                 mod_timer(&priv->monitor_recover,
2145                         jiffies +
2146                         msecs_to_jiffies(priv->cfg->monitor_recover_period));
2147         }
2148
2149         if (iwl_is_rfkill(priv))
2150                 return;
2151
2152         ieee80211_wake_queues(priv->hw);
2153
2154         priv->active_rate = IWL_RATES_MASK;
2155
2156         /* Configure Tx antenna selection based on H/W config */
2157         if (priv->cfg->ops->hcmd->set_tx_ant)
2158                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2159
2160         if (iwl_is_associated(priv)) {
2161                 struct iwl_rxon_cmd *active_rxon =
2162                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2163                 /* apply any changes in staging */
2164                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2165                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2166         } else {
2167                 /* Initialize our rx_config data */
2168                 iwl_connection_init_rx_config(priv, priv->iw_mode);
2169
2170                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2171                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2172
2173                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2174         }
2175
2176         /* Configure Bluetooth device coexistence support */
2177         priv->cfg->ops->hcmd->send_bt_config(priv);
2178
2179         iwl_reset_run_time_calib(priv);
2180
2181         /* Configure the adapter for unassociated operation */
2182         iwlcore_commit_rxon(priv);
2183
2184         /* At this point, the NIC is initialized and operational */
2185         iwl_rf_kill_ct_config(priv);
2186
2187         iwl_leds_init(priv);
2188
2189         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2190         set_bit(STATUS_READY, &priv->status);
2191         wake_up_interruptible(&priv->wait_command_queue);
2192
2193         iwl_power_update_mode(priv, true);
2194         IWL_DEBUG_INFO(priv, "Updated power mode\n");
2195
2196
2197         return;
2198
2199  restart:
2200         queue_work(priv->workqueue, &priv->restart);
2201 }
2202
2203 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2204
2205 static void __iwl_down(struct iwl_priv *priv)
2206 {
2207         unsigned long flags;
2208         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2209
2210         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2211
2212         if (!exit_pending)
2213                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2214
2215         iwl_clear_ucode_stations(priv, true);
2216
2217         /* Unblock any waiting calls */
2218         wake_up_interruptible_all(&priv->wait_command_queue);
2219
2220         /* Wipe out the EXIT_PENDING status bit if we are not actually
2221          * exiting the module */
2222         if (!exit_pending)
2223                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2224
2225         /* stop and reset the on-board processor */
2226         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2227
2228         /* tell the device to stop sending interrupts */
2229         spin_lock_irqsave(&priv->lock, flags);
2230         iwl_disable_interrupts(priv);
2231         spin_unlock_irqrestore(&priv->lock, flags);
2232         iwl_synchronize_irq(priv);
2233
2234         if (priv->mac80211_registered)
2235                 ieee80211_stop_queues(priv->hw);
2236
2237         /* If we have not previously called iwl_init() then
2238          * clear all bits but the RF Kill bit and return */
2239         if (!iwl_is_init(priv)) {
2240                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2241                                         STATUS_RF_KILL_HW |
2242                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2243                                         STATUS_GEO_CONFIGURED |
2244                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2245                                         STATUS_EXIT_PENDING;
2246                 goto exit;
2247         }
2248
2249         /* ...otherwise clear out all the status bits but the RF Kill
2250          * bit and continue taking the NIC down. */
2251         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2252                                 STATUS_RF_KILL_HW |
2253                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2254                                 STATUS_GEO_CONFIGURED |
2255                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2256                                 STATUS_FW_ERROR |
2257                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2258                                 STATUS_EXIT_PENDING;
2259
2260         /* device going down, Stop using ICT table */
2261         iwl_disable_ict(priv);
2262
2263         iwlagn_txq_ctx_stop(priv);
2264         iwlagn_rxq_stop(priv);
2265
2266         /* Power-down device's busmaster DMA clocks */
2267         iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2268         udelay(5);
2269
2270         /* Make sure (redundant) we've released our request to stay awake */
2271         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2272
2273         /* Stop the device, and put it in low power state */
2274         priv->cfg->ops->lib->apm_ops.stop(priv);
2275
2276  exit:
2277         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2278
2279         if (priv->ibss_beacon)
2280                 dev_kfree_skb(priv->ibss_beacon);
2281         priv->ibss_beacon = NULL;
2282
2283         /* clear out any free frames */
2284         iwl_clear_free_frames(priv);
2285 }
2286
2287 static void iwl_down(struct iwl_priv *priv)
2288 {
2289         mutex_lock(&priv->mutex);
2290         __iwl_down(priv);
2291         mutex_unlock(&priv->mutex);
2292
2293         iwl_cancel_deferred_work(priv);
2294 }
2295
2296 #define HW_READY_TIMEOUT (50)
2297
2298 static int iwl_set_hw_ready(struct iwl_priv *priv)
2299 {
2300         int ret = 0;
2301
2302         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2303                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2304
2305         /* See if we got it */
2306         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2307                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2308                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2309                                 HW_READY_TIMEOUT);
2310         if (ret != -ETIMEDOUT)
2311                 priv->hw_ready = true;
2312         else
2313                 priv->hw_ready = false;
2314
2315         IWL_DEBUG_INFO(priv, "hardware %s\n",
2316                       (priv->hw_ready == 1) ? "ready" : "not ready");
2317         return ret;
2318 }
2319
2320 static int iwl_prepare_card_hw(struct iwl_priv *priv)
2321 {
2322         int ret = 0;
2323
2324         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
2325
2326         ret = iwl_set_hw_ready(priv);
2327         if (priv->hw_ready)
2328                 return ret;
2329
2330         /* If HW is not ready, prepare the conditions to check again */
2331         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2332                         CSR_HW_IF_CONFIG_REG_PREPARE);
2333
2334         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2335                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2336                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2337
2338         /* HW should be ready by now, check again. */
2339         if (ret != -ETIMEDOUT)
2340                 iwl_set_hw_ready(priv);
2341
2342         return ret;
2343 }
2344
2345 #define MAX_HW_RESTARTS 5
2346
2347 static int __iwl_up(struct iwl_priv *priv)
2348 {
2349         int i;
2350         int ret;
2351
2352         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2353                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2354                 return -EIO;
2355         }
2356
2357         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2358                 IWL_ERR(priv, "ucode not available for device bringup\n");
2359                 return -EIO;
2360         }
2361
2362         iwl_prepare_card_hw(priv);
2363
2364         if (!priv->hw_ready) {
2365                 IWL_WARN(priv, "Exit HW not ready\n");
2366                 return -EIO;
2367         }
2368
2369         /* If platform's RF_KILL switch is NOT set to KILL */
2370         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2371                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2372         else
2373                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2374
2375         if (iwl_is_rfkill(priv)) {
2376                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2377
2378                 iwl_enable_interrupts(priv);
2379                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2380                 return 0;
2381         }
2382
2383         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2384
2385         ret = iwlagn_hw_nic_init(priv);
2386         if (ret) {
2387                 IWL_ERR(priv, "Unable to init nic\n");
2388                 return ret;
2389         }
2390
2391         /* make sure rfkill handshake bits are cleared */
2392         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2393         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2394                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2395
2396         /* clear (again), then enable host interrupts */
2397         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2398         iwl_enable_interrupts(priv);
2399
2400         /* really make sure rfkill handshake bits are cleared */
2401         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2402         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2403
2404         /* Copy original ucode data image from disk into backup cache.
2405          * This will be used to initialize the on-board processor's
2406          * data SRAM for a clean start when the runtime program first loads. */
2407         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2408                priv->ucode_data.len);
2409
2410         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2411
2412                 /* load bootstrap state machine,
2413                  * load bootstrap program into processor's memory,
2414                  * prepare to load the "initialize" uCode */
2415                 ret = priv->cfg->ops->lib->load_ucode(priv);
2416
2417                 if (ret) {
2418                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2419                                 ret);
2420                         continue;
2421                 }
2422
2423                 /* start card; "initialize" will load runtime ucode */
2424                 iwl_nic_start(priv);
2425
2426                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2427
2428                 return 0;
2429         }
2430
2431         set_bit(STATUS_EXIT_PENDING, &priv->status);
2432         __iwl_down(priv);
2433         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2434
2435         /* tried to restart and config the device for as long as our
2436          * patience could withstand */
2437         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2438         return -EIO;
2439 }
2440
2441
2442 /*****************************************************************************
2443  *
2444  * Workqueue callbacks
2445  *
2446  *****************************************************************************/
2447
2448 static void iwl_bg_init_alive_start(struct work_struct *data)
2449 {
2450         struct iwl_priv *priv =
2451             container_of(data, struct iwl_priv, init_alive_start.work);
2452
2453         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2454                 return;
2455
2456         mutex_lock(&priv->mutex);
2457         priv->cfg->ops->lib->init_alive_start(priv);
2458         mutex_unlock(&priv->mutex);
2459 }
2460
2461 static void iwl_bg_alive_start(struct work_struct *data)
2462 {
2463         struct iwl_priv *priv =
2464             container_of(data, struct iwl_priv, alive_start.work);
2465
2466         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2467                 return;
2468
2469         /* enable dram interrupt */
2470         iwl_reset_ict(priv);
2471
2472         mutex_lock(&priv->mutex);
2473         iwl_alive_start(priv);
2474         mutex_unlock(&priv->mutex);
2475 }
2476
2477 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2478 {
2479         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2480                         run_time_calib_work);
2481
2482         mutex_lock(&priv->mutex);
2483
2484         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2485             test_bit(STATUS_SCANNING, &priv->status)) {
2486                 mutex_unlock(&priv->mutex);
2487                 return;
2488         }
2489
2490         if (priv->start_calib) {
2491                 iwl_chain_noise_calibration(priv, &priv->statistics);
2492
2493                 iwl_sensitivity_calibration(priv, &priv->statistics);
2494         }
2495
2496         mutex_unlock(&priv->mutex);
2497         return;
2498 }
2499
2500 static void iwl_bg_restart(struct work_struct *data)
2501 {
2502         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2503
2504         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2505                 return;
2506
2507         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2508                 mutex_lock(&priv->mutex);
2509                 priv->vif = NULL;
2510                 priv->is_open = 0;
2511                 mutex_unlock(&priv->mutex);
2512                 iwl_down(priv);
2513                 ieee80211_restart_hw(priv->hw);
2514         } else {
2515                 iwl_down(priv);
2516
2517                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2518                         return;
2519
2520                 mutex_lock(&priv->mutex);
2521                 __iwl_up(priv);
2522                 mutex_unlock(&priv->mutex);
2523         }
2524 }
2525
2526 static void iwl_bg_rx_replenish(struct work_struct *data)
2527 {
2528         struct iwl_priv *priv =
2529             container_of(data, struct iwl_priv, rx_replenish);
2530
2531         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2532                 return;
2533
2534         mutex_lock(&priv->mutex);
2535         iwlagn_rx_replenish(priv);
2536         mutex_unlock(&priv->mutex);
2537 }
2538
2539 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2540
2541 void iwl_post_associate(struct iwl_priv *priv)
2542 {
2543         struct ieee80211_conf *conf = NULL;
2544         int ret = 0;
2545
2546         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2547                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2548                 return;
2549         }
2550
2551         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2552                 return;
2553
2554
2555         if (!priv->vif || !priv->is_open)
2556                 return;
2557
2558         iwl_scan_cancel_timeout(priv, 200);
2559
2560         conf = ieee80211_get_hw_conf(priv->hw);
2561
2562         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2563         iwlcore_commit_rxon(priv);
2564
2565         iwl_setup_rxon_timing(priv);
2566         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2567                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2568         if (ret)
2569                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2570                             "Attempting to continue.\n");
2571
2572         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2573
2574         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2575
2576         if (priv->cfg->ops->hcmd->set_rxon_chain)
2577                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2578
2579         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2580
2581         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2582                         priv->assoc_id, priv->beacon_int);
2583
2584         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2585                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2586         else
2587                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2588
2589         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2590                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2591                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2592                 else
2593                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2594
2595                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2596                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2597
2598         }
2599
2600         iwlcore_commit_rxon(priv);
2601
2602         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2603                         priv->assoc_id, priv->active_rxon.bssid_addr);
2604
2605         switch (priv->iw_mode) {
2606         case NL80211_IFTYPE_STATION:
2607                 break;
2608
2609         case NL80211_IFTYPE_ADHOC:
2610
2611                 /* assume default assoc id */
2612                 priv->assoc_id = 1;
2613
2614                 iwl_add_local_station(priv, priv->bssid, true);
2615                 iwl_send_beacon_cmd(priv);
2616
2617                 break;
2618
2619         default:
2620                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2621                           __func__, priv->iw_mode);
2622                 break;
2623         }
2624
2625         /* the chain noise calibration will enabled PM upon completion
2626          * If chain noise has already been run, then we need to enable
2627          * power management here */
2628         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2629                 iwl_power_update_mode(priv, false);
2630
2631         /* Enable Rx differential gain and sensitivity calibrations */
2632         iwl_chain_noise_reset(priv);
2633         priv->start_calib = 1;
2634
2635 }
2636
2637 /*****************************************************************************
2638  *
2639  * mac80211 entry point functions
2640  *
2641  *****************************************************************************/
2642
2643 #define UCODE_READY_TIMEOUT     (4 * HZ)
2644
2645 /*
2646  * Not a mac80211 entry point function, but it fits in with all the
2647  * other mac80211 functions grouped here.
2648  */
2649 static int iwl_mac_setup_register(struct iwl_priv *priv)
2650 {
2651         int ret;
2652         struct ieee80211_hw *hw = priv->hw;
2653         hw->rate_control_algorithm = "iwl-agn-rs";
2654
2655         /* Tell mac80211 our characteristics */
2656         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2657                     IEEE80211_HW_AMPDU_AGGREGATION |
2658                     IEEE80211_HW_SPECTRUM_MGMT;
2659
2660         if (!priv->cfg->broken_powersave)
2661                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2662                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2663
2664         if (priv->cfg->sku & IWL_SKU_N)
2665                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2666                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2667
2668         hw->sta_data_size = sizeof(struct iwl_station_priv);
2669         hw->wiphy->interface_modes =
2670                 BIT(NL80211_IFTYPE_STATION) |
2671                 BIT(NL80211_IFTYPE_ADHOC);
2672
2673         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2674                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
2675
2676         /*
2677          * For now, disable PS by default because it affects
2678          * RX performance significantly.
2679          */
2680         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2681
2682         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2683         /* we create the 802.11 header and a zero-length SSID element */
2684         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
2685
2686         /* Default value; 4 EDCA QOS priorities */
2687         hw->queues = 4;
2688
2689         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2690
2691         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2692                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2693                         &priv->bands[IEEE80211_BAND_2GHZ];
2694         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2695                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2696                         &priv->bands[IEEE80211_BAND_5GHZ];
2697
2698         ret = ieee80211_register_hw(priv->hw);
2699         if (ret) {
2700                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2701                 return ret;
2702         }
2703         priv->mac80211_registered = 1;
2704
2705         return 0;
2706 }
2707
2708
2709 static int iwl_mac_start(struct ieee80211_hw *hw)
2710 {
2711         struct iwl_priv *priv = hw->priv;
2712         int ret;
2713
2714         IWL_DEBUG_MAC80211(priv, "enter\n");
2715
2716         /* we should be verifying the device is ready to be opened */
2717         mutex_lock(&priv->mutex);
2718         ret = __iwl_up(priv);
2719         mutex_unlock(&priv->mutex);
2720
2721         if (ret)
2722                 return ret;
2723
2724         if (iwl_is_rfkill(priv))
2725                 goto out;
2726
2727         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2728
2729         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2730          * mac80211 will not be run successfully. */
2731         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2732                         test_bit(STATUS_READY, &priv->status),
2733                         UCODE_READY_TIMEOUT);
2734         if (!ret) {
2735                 if (!test_bit(STATUS_READY, &priv->status)) {
2736                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2737                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2738                         return -ETIMEDOUT;
2739                 }
2740         }
2741
2742         iwl_led_start(priv);
2743
2744 out:
2745         priv->is_open = 1;
2746         IWL_DEBUG_MAC80211(priv, "leave\n");
2747         return 0;
2748 }
2749
2750 static void iwl_mac_stop(struct ieee80211_hw *hw)
2751 {
2752         struct iwl_priv *priv = hw->priv;
2753
2754         IWL_DEBUG_MAC80211(priv, "enter\n");
2755
2756         if (!priv->is_open)
2757                 return;
2758
2759         priv->is_open = 0;
2760
2761         if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
2762                 /* stop mac, cancel any scan request and clear
2763                  * RXON_FILTER_ASSOC_MSK BIT
2764                  */
2765                 mutex_lock(&priv->mutex);
2766                 iwl_scan_cancel_timeout(priv, 100);
2767                 mutex_unlock(&priv->mutex);
2768         }
2769
2770         iwl_down(priv);
2771
2772         flush_workqueue(priv->workqueue);
2773
2774         /* enable interrupts again in order to receive rfkill changes */
2775         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2776         iwl_enable_interrupts(priv);
2777
2778         IWL_DEBUG_MAC80211(priv, "leave\n");
2779 }
2780
2781 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2782 {
2783         struct iwl_priv *priv = hw->priv;
2784
2785         IWL_DEBUG_MACDUMP(priv, "enter\n");
2786
2787         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2788                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2789
2790         if (iwlagn_tx_skb(priv, skb))
2791                 dev_kfree_skb_any(skb);
2792
2793         IWL_DEBUG_MACDUMP(priv, "leave\n");
2794         return NETDEV_TX_OK;
2795 }
2796
2797 void iwl_config_ap(struct iwl_priv *priv)
2798 {
2799         int ret = 0;
2800
2801         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2802                 return;
2803
2804         /* The following should be done only at AP bring up */
2805         if (!iwl_is_associated(priv)) {
2806
2807                 /* RXON - unassoc (to set timing command) */
2808                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2809                 iwlcore_commit_rxon(priv);
2810
2811                 /* RXON Timing */
2812                 iwl_setup_rxon_timing(priv);
2813                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2814                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2815                 if (ret)
2816                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2817                                         "Attempting to continue.\n");
2818
2819                 /* AP has all antennas */
2820                 priv->chain_noise_data.active_chains =
2821                         priv->hw_params.valid_rx_ant;
2822                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2823                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2824                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2825
2826                 /* FIXME: what should be the assoc_id for AP? */
2827                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2828                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2829                         priv->staging_rxon.flags |=
2830                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2831                 else
2832                         priv->staging_rxon.flags &=
2833                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2834
2835                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2836                         if (priv->assoc_capability &
2837                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2838                                 priv->staging_rxon.flags |=
2839                                         RXON_FLG_SHORT_SLOT_MSK;
2840                         else
2841                                 priv->staging_rxon.flags &=
2842                                         ~RXON_FLG_SHORT_SLOT_MSK;
2843
2844                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2845                                 priv->staging_rxon.flags &=
2846                                         ~RXON_FLG_SHORT_SLOT_MSK;
2847                 }
2848                 /* restore RXON assoc */
2849                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2850                 iwlcore_commit_rxon(priv);
2851                 iwl_add_bcast_station(priv);
2852         }
2853         iwl_send_beacon_cmd(priv);
2854
2855         /* FIXME - we need to add code here to detect a totally new
2856          * configuration, reset the AP, unassoc, rxon timing, assoc,
2857          * clear sta table, add BCAST sta... */
2858 }
2859
2860 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2861                                     struct ieee80211_vif *vif,
2862                                     struct ieee80211_key_conf *keyconf,
2863                                     struct ieee80211_sta *sta,
2864                                     u32 iv32, u16 *phase1key)
2865 {
2866
2867         struct iwl_priv *priv = hw->priv;
2868         IWL_DEBUG_MAC80211(priv, "enter\n");
2869
2870         iwl_update_tkip_key(priv, keyconf,
2871                             sta ? sta->addr : iwl_bcast_addr,
2872                             iv32, phase1key);
2873
2874         IWL_DEBUG_MAC80211(priv, "leave\n");
2875 }
2876
2877 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2878                            struct ieee80211_vif *vif,
2879                            struct ieee80211_sta *sta,
2880                            struct ieee80211_key_conf *key)
2881 {
2882         struct iwl_priv *priv = hw->priv;
2883         const u8 *addr;
2884         int ret;
2885         u8 sta_id;
2886         bool is_default_wep_key = false;
2887
2888         IWL_DEBUG_MAC80211(priv, "enter\n");
2889
2890         if (priv->cfg->mod_params->sw_crypto) {
2891                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2892                 return -EOPNOTSUPP;
2893         }
2894         addr = sta ? sta->addr : iwl_bcast_addr;
2895         sta_id = iwl_find_station(priv, addr);
2896         if (sta_id == IWL_INVALID_STATION) {
2897                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2898                                    addr);
2899                 return -EINVAL;
2900
2901         }
2902
2903         mutex_lock(&priv->mutex);
2904         iwl_scan_cancel_timeout(priv, 100);
2905
2906         /*
2907          * If we are getting WEP group key and we didn't receive any key mapping
2908          * so far, we are in legacy wep mode (group key only), otherwise we are
2909          * in 1X mode.
2910          * In legacy wep mode, we use another host command to the uCode.
2911          */
2912         if (key->alg == ALG_WEP && !sta && vif->type != NL80211_IFTYPE_AP) {
2913                 if (cmd == SET_KEY)
2914                         is_default_wep_key = !priv->key_mapping_key;
2915                 else
2916                         is_default_wep_key =
2917                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2918         }
2919
2920         switch (cmd) {
2921         case SET_KEY:
2922                 if (is_default_wep_key)
2923                         ret = iwl_set_default_wep_key(priv, key);
2924                 else
2925                         ret = iwl_set_dynamic_key(priv, key, sta_id);
2926
2927                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2928                 break;
2929         case DISABLE_KEY:
2930                 if (is_default_wep_key)
2931                         ret = iwl_remove_default_wep_key(priv, key);
2932                 else
2933                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
2934
2935                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2936                 break;
2937         default:
2938                 ret = -EINVAL;
2939         }
2940
2941         mutex_unlock(&priv->mutex);
2942         IWL_DEBUG_MAC80211(priv, "leave\n");
2943
2944         return ret;
2945 }
2946
2947 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2948                                 struct ieee80211_vif *vif,
2949                              enum ieee80211_ampdu_mlme_action action,
2950                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2951 {
2952         struct iwl_priv *priv = hw->priv;
2953         int ret;
2954
2955         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2956                      sta->addr, tid);
2957
2958         if (!(priv->cfg->sku & IWL_SKU_N))
2959                 return -EACCES;
2960
2961         switch (action) {
2962         case IEEE80211_AMPDU_RX_START:
2963                 IWL_DEBUG_HT(priv, "start Rx\n");
2964                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2965         case IEEE80211_AMPDU_RX_STOP:
2966                 IWL_DEBUG_HT(priv, "stop Rx\n");
2967                 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2968                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2969                         return 0;
2970                 else
2971                         return ret;
2972         case IEEE80211_AMPDU_TX_START:
2973                 IWL_DEBUG_HT(priv, "start Tx\n");
2974                 ret = iwlagn_tx_agg_start(priv, sta->addr, tid, ssn);
2975                 if (ret == 0) {
2976                         priv->_agn.agg_tids_count++;
2977                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2978                                      priv->_agn.agg_tids_count);
2979                 }
2980                 return ret;
2981         case IEEE80211_AMPDU_TX_STOP:
2982                 IWL_DEBUG_HT(priv, "stop Tx\n");
2983                 ret = iwlagn_tx_agg_stop(priv, sta->addr, tid);
2984                 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
2985                         priv->_agn.agg_tids_count--;
2986                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2987                                      priv->_agn.agg_tids_count);
2988                 }
2989                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2990                         return 0;
2991                 else
2992                         return ret;
2993         case IEEE80211_AMPDU_TX_OPERATIONAL:
2994                 /* do nothing */
2995                 return -EOPNOTSUPP;
2996         default:
2997                 IWL_DEBUG_HT(priv, "unknown\n");
2998                 return -EINVAL;
2999                 break;
3000         }
3001         return 0;
3002 }
3003
3004 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
3005                                struct ieee80211_vif *vif,
3006                                enum sta_notify_cmd cmd,
3007                                struct ieee80211_sta *sta)
3008 {
3009         struct iwl_priv *priv = hw->priv;
3010         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3011         int sta_id;
3012
3013         switch (cmd) {
3014         case STA_NOTIFY_SLEEP:
3015                 WARN_ON(!sta_priv->client);
3016                 sta_priv->asleep = true;
3017                 if (atomic_read(&sta_priv->pending_frames) > 0)
3018                         ieee80211_sta_block_awake(hw, sta, true);
3019                 break;
3020         case STA_NOTIFY_AWAKE:
3021                 WARN_ON(!sta_priv->client);
3022                 if (!sta_priv->asleep)
3023                         break;
3024                 sta_priv->asleep = false;
3025                 sta_id = iwl_find_station(priv, sta->addr);
3026                 if (sta_id != IWL_INVALID_STATION)
3027                         iwl_sta_modify_ps_wake(priv, sta_id);
3028                 break;
3029         default:
3030                 break;
3031         }
3032 }
3033
3034 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3035                               struct ieee80211_vif *vif,
3036                               struct ieee80211_sta *sta)
3037 {
3038         struct iwl_priv *priv = hw->priv;
3039         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3040         bool is_ap = priv->iw_mode == NL80211_IFTYPE_STATION;
3041         int ret;
3042         u8 sta_id;
3043
3044         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3045                         sta->addr);
3046
3047         atomic_set(&sta_priv->pending_frames, 0);
3048         if (vif->type == NL80211_IFTYPE_AP)
3049                 sta_priv->client = true;
3050
3051         ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
3052                                      &sta_id);
3053         if (ret) {
3054                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3055                         sta->addr, ret);
3056                 /* Should we return success if return code is EEXIST ? */
3057                 return ret;
3058         }
3059
3060         /* Initialize rate scaling */
3061         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3062                        sta->addr);
3063         iwl_rs_rate_init(priv, sta, sta_id);
3064
3065         return ret;
3066 }
3067
3068 /*****************************************************************************
3069  *
3070  * sysfs attributes
3071  *
3072  *****************************************************************************/
3073
3074 #ifdef CONFIG_IWLWIFI_DEBUG
3075
3076 /*
3077  * The following adds a new attribute to the sysfs representation
3078  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3079  * used for controlling the debug level.
3080  *
3081  * See the level definitions in iwl for details.
3082  *
3083  * The debug_level being managed using sysfs below is a per device debug
3084  * level that is used instead of the global debug level if it (the per
3085  * device debug level) is set.
3086  */
3087 static ssize_t show_debug_level(struct device *d,
3088                                 struct device_attribute *attr, char *buf)
3089 {
3090         struct iwl_priv *priv = dev_get_drvdata(d);
3091         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3092 }
3093 static ssize_t store_debug_level(struct device *d,
3094                                 struct device_attribute *attr,
3095                                  const char *buf, size_t count)
3096 {
3097         struct iwl_priv *priv = dev_get_drvdata(d);
3098         unsigned long val;
3099         int ret;
3100
3101         ret = strict_strtoul(buf, 0, &val);
3102         if (ret)
3103                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
3104         else {
3105                 priv->debug_level = val;
3106                 if (iwl_alloc_traffic_mem(priv))
3107                         IWL_ERR(priv,
3108                                 "Not enough memory to generate traffic log\n");
3109         }
3110         return strnlen(buf, count);
3111 }
3112
3113 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3114                         show_debug_level, store_debug_level);
3115
3116
3117 #endif /* CONFIG_IWLWIFI_DEBUG */
3118
3119
3120 static ssize_t show_temperature(struct device *d,
3121                                 struct device_attribute *attr, char *buf)
3122 {
3123         struct iwl_priv *priv = dev_get_drvdata(d);
3124
3125         if (!iwl_is_alive(priv))
3126                 return -EAGAIN;
3127
3128         return sprintf(buf, "%d\n", priv->temperature);
3129 }
3130
3131 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3132
3133 static ssize_t show_tx_power(struct device *d,
3134                              struct device_attribute *attr, char *buf)
3135 {
3136         struct iwl_priv *priv = dev_get_drvdata(d);
3137
3138         if (!iwl_is_ready_rf(priv))
3139                 return sprintf(buf, "off\n");
3140         else
3141                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3142 }
3143
3144 static ssize_t store_tx_power(struct device *d,
3145                               struct device_attribute *attr,
3146                               const char *buf, size_t count)
3147 {
3148         struct iwl_priv *priv = dev_get_drvdata(d);
3149         unsigned long val;
3150         int ret;
3151
3152         ret = strict_strtoul(buf, 10, &val);
3153         if (ret)
3154                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3155         else {
3156                 ret = iwl_set_tx_power(priv, val, false);
3157                 if (ret)
3158                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
3159                                 ret);
3160                 else
3161                         ret = count;
3162         }
3163         return ret;
3164 }
3165
3166 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3167
3168 static ssize_t show_rts_ht_protection(struct device *d,
3169                              struct device_attribute *attr, char *buf)
3170 {
3171         struct iwl_priv *priv = dev_get_drvdata(d);
3172
3173         return sprintf(buf, "%s\n",
3174                 priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
3175 }
3176
3177 static ssize_t store_rts_ht_protection(struct device *d,
3178                               struct device_attribute *attr,
3179                               const char *buf, size_t count)
3180 {
3181         struct iwl_priv *priv = dev_get_drvdata(d);
3182         unsigned long val;
3183         int ret;
3184
3185         ret = strict_strtoul(buf, 10, &val);
3186         if (ret)
3187                 IWL_INFO(priv, "Input is not in decimal form.\n");
3188         else {
3189                 if (!iwl_is_associated(priv))
3190                         priv->cfg->use_rts_for_ht = val ? true : false;
3191                 else
3192                         IWL_ERR(priv, "Sta associated with AP - "
3193                                 "Change protection mechanism is not allowed\n");
3194                 ret = count;
3195         }
3196         return ret;
3197 }
3198
3199 static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
3200                         show_rts_ht_protection, store_rts_ht_protection);
3201
3202
3203 /*****************************************************************************
3204  *
3205  * driver setup and teardown
3206  *
3207  *****************************************************************************/
3208
3209 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3210 {
3211         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3212
3213         init_waitqueue_head(&priv->wait_command_queue);
3214
3215         INIT_WORK(&priv->restart, iwl_bg_restart);
3216         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3217         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3218         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3219         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3220         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3221
3222         iwl_setup_scan_deferred_work(priv);
3223
3224         if (priv->cfg->ops->lib->setup_deferred_work)
3225                 priv->cfg->ops->lib->setup_deferred_work(priv);
3226
3227         init_timer(&priv->statistics_periodic);
3228         priv->statistics_periodic.data = (unsigned long)priv;
3229         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3230
3231         init_timer(&priv->ucode_trace);
3232         priv->ucode_trace.data = (unsigned long)priv;
3233         priv->ucode_trace.function = iwl_bg_ucode_trace;
3234
3235         if (priv->cfg->ops->lib->recover_from_tx_stall) {
3236                 init_timer(&priv->monitor_recover);
3237                 priv->monitor_recover.data = (unsigned long)priv;
3238                 priv->monitor_recover.function =
3239                         priv->cfg->ops->lib->recover_from_tx_stall;
3240         }
3241
3242         if (!priv->cfg->use_isr_legacy)
3243                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3244                         iwl_irq_tasklet, (unsigned long)priv);
3245         else
3246                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3247                         iwl_irq_tasklet_legacy, (unsigned long)priv);
3248 }
3249
3250 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3251 {
3252         if (priv->cfg->ops->lib->cancel_deferred_work)
3253                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3254
3255         cancel_delayed_work_sync(&priv->init_alive_start);
3256         cancel_delayed_work(&priv->scan_check);
3257         cancel_work_sync(&priv->start_internal_scan);
3258         cancel_delayed_work(&priv->alive_start);
3259         cancel_work_sync(&priv->beacon_update);
3260         del_timer_sync(&priv->statistics_periodic);
3261         del_timer_sync(&priv->ucode_trace);
3262         if (priv->cfg->ops->lib->recover_from_tx_stall)
3263                 del_timer_sync(&priv->monitor_recover);
3264 }
3265
3266 static void iwl_init_hw_rates(struct iwl_priv *priv,
3267                               struct ieee80211_rate *rates)
3268 {
3269         int i;
3270
3271         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3272                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3273                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3274                 rates[i].hw_value_short = i;
3275                 rates[i].flags = 0;
3276                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3277                         /*
3278                          * If CCK != 1M then set short preamble rate flag.
3279                          */
3280                         rates[i].flags |=
3281                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3282                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3283                 }
3284         }
3285 }
3286
3287 static int iwl_init_drv(struct iwl_priv *priv)
3288 {
3289         int ret;
3290
3291         priv->ibss_beacon = NULL;
3292
3293         spin_lock_init(&priv->sta_lock);
3294         spin_lock_init(&priv->hcmd_lock);
3295
3296         INIT_LIST_HEAD(&priv->free_frames);
3297
3298         mutex_init(&priv->mutex);
3299         mutex_init(&priv->sync_cmd_mutex);
3300
3301         priv->ieee_channels = NULL;
3302         priv->ieee_rates = NULL;
3303         priv->band = IEEE80211_BAND_2GHZ;
3304
3305         priv->iw_mode = NL80211_IFTYPE_STATION;
3306         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3307         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3308         priv->_agn.agg_tids_count = 0;
3309
3310         /* initialize force reset */
3311         priv->force_reset[IWL_RF_RESET].reset_duration =
3312                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3313         priv->force_reset[IWL_FW_RESET].reset_duration =
3314                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3315
3316         /* Choose which receivers/antennas to use */
3317         if (priv->cfg->ops->hcmd->set_rxon_chain)
3318                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
3319
3320         iwl_init_scan_params(priv);
3321
3322         /* Set the tx_power_user_lmt to the lowest power level
3323          * this value will get overwritten by channel max power avg
3324          * from eeprom */
3325         priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
3326
3327         ret = iwl_init_channel_map(priv);
3328         if (ret) {
3329                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3330                 goto err;
3331         }
3332
3333         ret = iwlcore_init_geos(priv);
3334         if (ret) {
3335                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3336                 goto err_free_channel_map;
3337         }
3338         iwl_init_hw_rates(priv, priv->ieee_rates);
3339
3340         return 0;
3341
3342 err_free_channel_map:
3343         iwl_free_channel_map(priv);
3344 err:
3345         return ret;
3346 }
3347
3348 static void iwl_uninit_drv(struct iwl_priv *priv)
3349 {
3350         iwl_calib_free_results(priv);
3351         iwlcore_free_geos(priv);
3352         iwl_free_channel_map(priv);
3353         kfree(priv->scan_cmd);
3354 }
3355
3356 static struct attribute *iwl_sysfs_entries[] = {
3357         &dev_attr_temperature.attr,
3358         &dev_attr_tx_power.attr,
3359         &dev_attr_rts_ht_protection.attr,
3360 #ifdef CONFIG_IWLWIFI_DEBUG
3361         &dev_attr_debug_level.attr,
3362 #endif
3363         NULL
3364 };
3365
3366 static struct attribute_group iwl_attribute_group = {
3367         .name = NULL,           /* put in device directory */
3368         .attrs = iwl_sysfs_entries,
3369 };
3370
3371 static struct ieee80211_ops iwl_hw_ops = {
3372         .tx = iwl_mac_tx,
3373         .start = iwl_mac_start,
3374         .stop = iwl_mac_stop,
3375         .add_interface = iwl_mac_add_interface,
3376         .remove_interface = iwl_mac_remove_interface,
3377         .config = iwl_mac_config,
3378         .configure_filter = iwl_configure_filter,
3379         .set_key = iwl_mac_set_key,
3380         .update_tkip_key = iwl_mac_update_tkip_key,
3381         .conf_tx = iwl_mac_conf_tx,
3382         .reset_tsf = iwl_mac_reset_tsf,
3383         .bss_info_changed = iwl_bss_info_changed,
3384         .ampdu_action = iwl_mac_ampdu_action,
3385         .hw_scan = iwl_mac_hw_scan,
3386         .sta_notify = iwl_mac_sta_notify,
3387         .sta_add = iwlagn_mac_sta_add,
3388         .sta_remove = iwl_mac_sta_remove,
3389 };
3390
3391 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3392 {
3393         int err = 0;
3394         struct iwl_priv *priv;
3395         struct ieee80211_hw *hw;
3396         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3397         unsigned long flags;
3398         u16 pci_cmd;
3399
3400         /************************
3401          * 1. Allocating HW data
3402          ************************/
3403
3404         /* Disabling hardware scan means that mac80211 will perform scans
3405          * "the hard way", rather than using device's scan. */
3406         if (cfg->mod_params->disable_hw_scan) {
3407                 if (iwl_debug_level & IWL_DL_INFO)
3408                         dev_printk(KERN_DEBUG, &(pdev->dev),
3409                                    "Disabling hw_scan\n");
3410                 iwl_hw_ops.hw_scan = NULL;
3411         }
3412
3413         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3414         if (!hw) {
3415                 err = -ENOMEM;
3416                 goto out;
3417         }
3418         priv = hw->priv;
3419         /* At this point both hw and priv are allocated. */
3420
3421         SET_IEEE80211_DEV(hw, &pdev->dev);
3422
3423         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3424         priv->cfg = cfg;
3425         priv->pci_dev = pdev;
3426         priv->inta_mask = CSR_INI_SET_MASK;
3427
3428 #ifdef CONFIG_IWLWIFI_DEBUG
3429         atomic_set(&priv->restrict_refcnt, 0);
3430 #endif
3431         if (iwl_alloc_traffic_mem(priv))
3432                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3433
3434         /**************************
3435          * 2. Initializing PCI bus
3436          **************************/
3437         if (pci_enable_device(pdev)) {
3438                 err = -ENODEV;
3439                 goto out_ieee80211_free_hw;
3440         }
3441
3442         pci_set_master(pdev);
3443
3444         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3445         if (!err)
3446                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3447         if (err) {
3448                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3449                 if (!err)
3450                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3451                 /* both attempts failed: */
3452                 if (err) {
3453                         IWL_WARN(priv, "No suitable DMA available.\n");
3454                         goto out_pci_disable_device;
3455                 }
3456         }
3457
3458         err = pci_request_regions(pdev, DRV_NAME);
3459         if (err)
3460                 goto out_pci_disable_device;
3461
3462         pci_set_drvdata(pdev, priv);
3463
3464
3465         /***********************
3466          * 3. Read REV register
3467          ***********************/
3468         priv->hw_base = pci_iomap(pdev, 0, 0);
3469         if (!priv->hw_base) {
3470                 err = -ENODEV;
3471                 goto out_pci_release_regions;
3472         }
3473
3474         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3475                 (unsigned long long) pci_resource_len(pdev, 0));
3476         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3477
3478         /* these spin locks will be used in apm_ops.init and EEPROM access
3479          * we should init now
3480          */
3481         spin_lock_init(&priv->reg_lock);
3482         spin_lock_init(&priv->lock);
3483
3484         /*
3485          * stop and reset the on-board processor just in case it is in a
3486          * strange state ... like being left stranded by a primary kernel
3487          * and this is now the kdump kernel trying to start up
3488          */
3489         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3490
3491         iwl_hw_detect(priv);
3492         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3493                 priv->cfg->name, priv->hw_rev);
3494
3495         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3496          * PCI Tx retries from interfering with C3 CPU state */
3497         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3498
3499         iwl_prepare_card_hw(priv);
3500         if (!priv->hw_ready) {
3501                 IWL_WARN(priv, "Failed, HW not ready\n");
3502                 goto out_iounmap;
3503         }
3504
3505         /*****************
3506          * 4. Read EEPROM
3507          *****************/
3508         /* Read the EEPROM */
3509         err = iwl_eeprom_init(priv);
3510         if (err) {
3511                 IWL_ERR(priv, "Unable to init EEPROM\n");
3512                 goto out_iounmap;
3513         }
3514         err = iwl_eeprom_check_version(priv);
3515         if (err)
3516                 goto out_free_eeprom;
3517
3518         /* extract MAC Address */
3519         iwl_eeprom_get_mac(priv, priv->mac_addr);
3520         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3521         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3522
3523         /************************
3524          * 5. Setup HW constants
3525          ************************/
3526         if (iwl_set_hw_params(priv)) {
3527                 IWL_ERR(priv, "failed to set hw parameters\n");
3528                 goto out_free_eeprom;
3529         }
3530
3531         /*******************
3532          * 6. Setup priv
3533          *******************/
3534
3535         err = iwl_init_drv(priv);
3536         if (err)
3537                 goto out_free_eeprom;
3538         /* At this point both hw and priv are initialized. */
3539
3540         /********************
3541          * 7. Setup services
3542          ********************/
3543         spin_lock_irqsave(&priv->lock, flags);
3544         iwl_disable_interrupts(priv);
3545         spin_unlock_irqrestore(&priv->lock, flags);
3546
3547         pci_enable_msi(priv->pci_dev);
3548
3549         iwl_alloc_isr_ict(priv);
3550         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
3551                           IRQF_SHARED, DRV_NAME, priv);
3552         if (err) {
3553                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3554                 goto out_disable_msi;
3555         }
3556         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3557         if (err) {
3558                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3559                 goto out_free_irq;
3560         }
3561
3562         iwl_setup_deferred_work(priv);
3563         iwl_setup_rx_handlers(priv);
3564
3565         /*********************************************
3566          * 8. Enable interrupts and read RFKILL state
3567          *********************************************/
3568
3569         /* enable interrupts if needed: hw bug w/a */
3570         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3571         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3572                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3573                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3574         }
3575
3576         iwl_enable_interrupts(priv);
3577
3578         /* If platform's RF_KILL switch is NOT set to KILL */
3579         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3580                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3581         else
3582                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3583
3584         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3585                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3586
3587         iwl_power_initialize(priv);
3588         iwl_tt_initialize(priv);
3589
3590         err = iwl_request_firmware(priv, true);
3591         if (err)
3592                 goto out_remove_sysfs;
3593
3594         return 0;
3595
3596  out_remove_sysfs:
3597         destroy_workqueue(priv->workqueue);
3598         priv->workqueue = NULL;
3599         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3600  out_free_irq:
3601         free_irq(priv->pci_dev->irq, priv);
3602         iwl_free_isr_ict(priv);
3603  out_disable_msi:
3604         pci_disable_msi(priv->pci_dev);
3605         iwl_uninit_drv(priv);
3606  out_free_eeprom:
3607         iwl_eeprom_free(priv);
3608  out_iounmap:
3609         pci_iounmap(pdev, priv->hw_base);
3610  out_pci_release_regions:
3611         pci_set_drvdata(pdev, NULL);
3612         pci_release_regions(pdev);
3613  out_pci_disable_device:
3614         pci_disable_device(pdev);
3615  out_ieee80211_free_hw:
3616         iwl_free_traffic_mem(priv);
3617         ieee80211_free_hw(priv->hw);
3618  out:
3619         return err;
3620 }
3621
3622 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3623 {
3624         struct iwl_priv *priv = pci_get_drvdata(pdev);
3625         unsigned long flags;
3626
3627         if (!priv)
3628                 return;
3629
3630         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3631
3632         iwl_dbgfs_unregister(priv);
3633         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3634
3635         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3636          * to be called and iwl_down since we are removing the device
3637          * we need to set STATUS_EXIT_PENDING bit.
3638          */
3639         set_bit(STATUS_EXIT_PENDING, &priv->status);
3640         if (priv->mac80211_registered) {
3641                 ieee80211_unregister_hw(priv->hw);
3642                 priv->mac80211_registered = 0;
3643         } else {
3644                 iwl_down(priv);
3645         }
3646
3647         /*
3648          * Make sure device is reset to low power before unloading driver.
3649          * This may be redundant with iwl_down(), but there are paths to
3650          * run iwl_down() without calling apm_ops.stop(), and there are
3651          * paths to avoid running iwl_down() at all before leaving driver.
3652          * This (inexpensive) call *makes sure* device is reset.
3653          */
3654         priv->cfg->ops->lib->apm_ops.stop(priv);
3655
3656         iwl_tt_exit(priv);
3657
3658         /* make sure we flush any pending irq or
3659          * tasklet for the driver
3660          */
3661         spin_lock_irqsave(&priv->lock, flags);
3662         iwl_disable_interrupts(priv);
3663         spin_unlock_irqrestore(&priv->lock, flags);
3664
3665         iwl_synchronize_irq(priv);
3666
3667         iwl_dealloc_ucode_pci(priv);
3668
3669         if (priv->rxq.bd)
3670                 iwlagn_rx_queue_free(priv, &priv->rxq);
3671         iwlagn_hw_txq_ctx_free(priv);
3672
3673         iwl_eeprom_free(priv);
3674
3675
3676         /*netif_stop_queue(dev); */
3677         flush_workqueue(priv->workqueue);
3678
3679         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3680          * priv->workqueue... so we can't take down the workqueue
3681          * until now... */
3682         destroy_workqueue(priv->workqueue);
3683         priv->workqueue = NULL;
3684         iwl_free_traffic_mem(priv);
3685
3686         free_irq(priv->pci_dev->irq, priv);
3687         pci_disable_msi(priv->pci_dev);
3688         pci_iounmap(pdev, priv->hw_base);
3689         pci_release_regions(pdev);
3690         pci_disable_device(pdev);
3691         pci_set_drvdata(pdev, NULL);
3692
3693         iwl_uninit_drv(priv);
3694
3695         iwl_free_isr_ict(priv);
3696
3697         if (priv->ibss_beacon)
3698                 dev_kfree_skb(priv->ibss_beacon);
3699
3700         ieee80211_free_hw(priv->hw);
3701 }
3702
3703
3704 /*****************************************************************************
3705  *
3706  * driver and module entry point
3707  *
3708  *****************************************************************************/
3709
3710 /* Hardware specific file defines the PCI IDs table for that hardware module */
3711 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
3712 #ifdef CONFIG_IWL4965
3713         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3714         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3715 #endif /* CONFIG_IWL4965 */
3716 #ifdef CONFIG_IWL5000
3717 /* 5100 Series WiFi */
3718         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
3719         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
3720         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
3721         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
3722         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
3723         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
3724         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
3725         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
3726         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
3727         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
3728         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
3729         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
3730         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
3731         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
3732         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
3733         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
3734         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
3735         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
3736         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
3737         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
3738         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
3739         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
3740         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
3741         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
3742
3743 /* 5300 Series WiFi */
3744         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
3745         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
3746         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
3747         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
3748         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
3749         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
3750         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
3751         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
3752         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
3753         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
3754         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
3755         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
3756
3757 /* 5350 Series WiFi/WiMax */
3758         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
3759         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
3760         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
3761
3762 /* 5150 Series Wifi/WiMax */
3763         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
3764         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
3765         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
3766         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
3767         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
3768         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
3769
3770         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
3771         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
3772         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
3773         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
3774
3775 /* 6x00 Series */
3776         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3777         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3778         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3779         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3780         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3781         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3782         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3783         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3784         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3785         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3786
3787 /* 6x00 Series Gen2 */
3788         {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2_2agn_cfg)},
3789         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2_2agn_cfg)},
3790         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2_2agn_cfg)},
3791         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2_2agn_cfg)},
3792
3793 /* 6x50 WiFi/WiMax Series */
3794         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3795         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3796         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3797         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3798         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3799         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3800
3801 /* 1000 Series WiFi */
3802         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3803         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3804         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3805         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3806         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3807         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3808         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
3809         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
3810         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
3811         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
3812         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
3813         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
3814 #endif /* CONFIG_IWL5000 */
3815
3816         {0}
3817 };
3818 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3819
3820 static struct pci_driver iwl_driver = {
3821         .name = DRV_NAME,
3822         .id_table = iwl_hw_card_ids,
3823         .probe = iwl_pci_probe,
3824         .remove = __devexit_p(iwl_pci_remove),
3825 #ifdef CONFIG_PM
3826         .suspend = iwl_pci_suspend,
3827         .resume = iwl_pci_resume,
3828 #endif
3829 };
3830
3831 static int __init iwl_init(void)
3832 {
3833
3834         int ret;
3835         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3836         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3837
3838         ret = iwlagn_rate_control_register();
3839         if (ret) {
3840                 printk(KERN_ERR DRV_NAME
3841                        "Unable to register rate control algorithm: %d\n", ret);
3842                 return ret;
3843         }
3844
3845         ret = pci_register_driver(&iwl_driver);
3846         if (ret) {
3847                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3848                 goto error_register;
3849         }
3850
3851         return ret;
3852
3853 error_register:
3854         iwlagn_rate_control_unregister();
3855         return ret;
3856 }
3857
3858 static void __exit iwl_exit(void)
3859 {
3860         pci_unregister_driver(&iwl_driver);
3861         iwlagn_rate_control_unregister();
3862 }
3863
3864 module_exit(iwl_exit);
3865 module_init(iwl_init);
3866
3867 #ifdef CONFIG_IWLWIFI_DEBUG
3868 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
3869 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
3870 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3871 MODULE_PARM_DESC(debug, "debug output mask");
3872 #endif
3873
3874 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
3875 MODULE_PARM_DESC(swcrypto50,
3876                  "using crypto in software (default 0 [hardware]) (deprecated)");
3877 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3878 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3879 module_param_named(queues_num50,
3880                    iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3881 MODULE_PARM_DESC(queues_num50,
3882                  "number of hw queues in 50xx series (deprecated)");
3883 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3884 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3885 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3886 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
3887 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3888 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3889 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
3890                    int, S_IRUGO);
3891 MODULE_PARM_DESC(amsdu_size_8K50,
3892                  "enable 8K amsdu size in 50XX series (deprecated)");
3893 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3894                    int, S_IRUGO);
3895 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3896 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3897 MODULE_PARM_DESC(fw_restart50,
3898                  "restart firmware in case of error (deprecated)");
3899 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3900 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3901 module_param_named(
3902         disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
3903 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");