SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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
  59
  60 /******************************************************************************
  61  *
  62  * module boiler plate
  63  *
  64  ******************************************************************************/
  65
  66 /*
  67  * module name, copyright, version, etc.
  68  */
  69 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  70
  71 #ifdef CONFIG_IWLWIFI_DEBUG
  72 #define VD "d"
  73 #else
  74 #define VD
  75 #endif
  76
  77 #define DRV_VERSION     IWLWIFI_VERSION VD
  78
  79
  80 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  81 MODULE_VERSION(DRV_VERSION);
  82 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  83 MODULE_LICENSE("GPL");
  84 MODULE_ALIAS("iwl4965");
  85
  86 /*************** STATION TABLE MANAGEMENT ****
  87  * mac80211 should be examined to determine if sta_info is duplicating
  88  * the functionality provided here
  89  */
  90
  91 /**************************************************************/
  92
  93 /**
  94  * iwl_commit_rxon - commit staging_rxon to hardware
  95  *
  96  * The RXON command in staging_rxon is committed to the hardware and
  97  * the active_rxon structure is updated with the new data.  This
  98  * function correctly transitions out of the RXON_ASSOC_MSK state if
  99  * a HW tune is required based on the RXON structure changes.
 100  */
 101 int iwl_commit_rxon(struct iwl_priv *priv)
 102 {
 103         /* cast away the const for active_rxon in this function */
 104         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 105         int ret;
 106         bool new_assoc =
 107                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 108
 109         if (!iwl_is_alive(priv))
 110                 return -EBUSY;
 111
 112         /* always get timestamp with Rx frame */
 113         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 114
 115         ret = iwl_check_rxon_cmd(priv);
 116         if (ret) {
 117                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 118                 return -EINVAL;
 119         }
 120
 121         /*
 122          * receive commit_rxon request
 123          * abort any previous channel switch if still in process
 124          */
 125         if (priv->switch_rxon.switch_in_progress &&
 126             (priv->switch_rxon.channel != priv->staging_rxon.channel)) {
 127                 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
 128                       le16_to_cpu(priv->switch_rxon.channel));
 129                 priv->switch_rxon.switch_in_progress = false;
 130         }
 131
 132         /* If we don't need to send a full RXON, we can use
 133          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 134          * and other flags for the current radio configuration. */
 135         if (!iwl_full_rxon_required(priv)) {
 136                 ret = iwl_send_rxon_assoc(priv);
 137                 if (ret) {
 138                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 139                         return ret;
 140                 }
 141
 142                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 143                 iwl_print_rx_config_cmd(priv);
 144                 return 0;
 145         }
 146
 147         /* station table will be cleared */
 148         priv->assoc_station_added = 0;
 149
 150         /* If we are currently associated and the new config requires
 151          * an RXON_ASSOC and the new config wants the associated mask enabled,
 152          * we must clear the associated from the active configuration
 153          * before we apply the new config */
 154         if (iwl_is_associated(priv) && new_assoc) {
 155                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 156                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 157
 158                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 159                                       sizeof(struct iwl_rxon_cmd),
 160                                       &priv->active_rxon);
 161
 162                 /* If the mask clearing failed then we set
 163                  * active_rxon back to what it was previously */
 164                 if (ret) {
 165                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 166                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 167                         return ret;
 168                 }
 169         }
 170
 171         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 172                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 173                        "* channel = %d\n"
 174                        "* bssid = %pM\n",
 175                        (new_assoc ? "" : "out"),
 176                        le16_to_cpu(priv->staging_rxon.channel),
 177                        priv->staging_rxon.bssid_addr);
 178
 179         iwl_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
 180
 181         /* Apply the new configuration
 182          * RXON unassoc clears the station table in uCode, send it before
 183          * we add the bcast station. If assoc bit is set, we will send RXON
 184          * after having added the bcast and bssid station.
 185          */
 186         if (!new_assoc) {
 187                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 188                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 189                 if (ret) {
 190                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 191                         return ret;
 192                 }
 193                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 194         }
 195
 196         iwl_clear_stations_table(priv);
 197
 198         priv->start_calib = 0;
 199
 200         /* Add the broadcast address so we can send broadcast frames */
 201         priv->cfg->ops->lib->add_bcast_station(priv);
 202
 203
 204         /* If we have set the ASSOC_MSK and we are in BSS mode then
 205          * add the IWL_AP_ID to the station rate table */
 206         if (new_assoc) {
 207                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 208                         ret = iwl_rxon_add_station(priv,
 209                                            priv->active_rxon.bssid_addr, 1);
 210                         if (ret == IWL_INVALID_STATION) {
 211                                 IWL_ERR(priv,
 212                                         "Error adding AP address for TX.\n");
 213                                 return -EIO;
 214                         }
 215                         priv->assoc_station_added = 1;
 216                         if (priv->default_wep_key &&
 217                             iwl_send_static_wepkey_cmd(priv, 0))
 218                                 IWL_ERR(priv,
 219                                         "Could not send WEP static key.\n");
 220                 }
 221
 222                 /*
 223                  * allow CTS-to-self if possible for new association.
 224                  * this is relevant only for 5000 series and up,
 225                  * but will not damage 4965
 226                  */
 227                 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 228
 229                 /* Apply the new configuration
 230                  * RXON assoc doesn't clear the station table in uCode,
 231                  */
 232                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 233                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 234                 if (ret) {
 235                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 236                         return ret;
 237                 }
 238                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 239         }
 240         iwl_print_rx_config_cmd(priv);
 241
 242         iwl_init_sensitivity(priv);
 243
 244         /* If we issue a new RXON command which required a tune then we must
 245          * send a new TXPOWER command or we won't be able to Tx any frames */
 246         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 247         if (ret) {
 248                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 249                 return ret;
 250         }
 251
 252         return 0;
 253 }
 254
 255 void iwl_update_chain_flags(struct iwl_priv *priv)
 256 {
 257
 258         if (priv->cfg->ops->hcmd->set_rxon_chain)
 259                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 260         iwlcore_commit_rxon(priv);
 261 }
 262
 263 static void iwl_clear_free_frames(struct iwl_priv *priv)
 264 {
 265         struct list_head *element;
 266
 267         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 268                        priv->frames_count);
 269
 270         while (!list_empty(&priv->free_frames)) {
 271                 element = priv->free_frames.next;
 272                 list_del(element);
 273                 kfree(list_entry(element, struct iwl_frame, list));
 274                 priv->frames_count--;
 275         }
 276
 277         if (priv->frames_count) {
 278                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 279                             priv->frames_count);
 280                 priv->frames_count = 0;
 281         }
 282 }
 283
 284 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 285 {
 286         struct iwl_frame *frame;
 287         struct list_head *element;
 288         if (list_empty(&priv->free_frames)) {
 289                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 290                 if (!frame) {
 291                         IWL_ERR(priv, "Could not allocate frame!\n");
 292                         return NULL;
 293                 }
 294
 295                 priv->frames_count++;
 296                 return frame;
 297         }
 298
 299         element = priv->free_frames.next;
 300         list_del(element);
 301         return list_entry(element, struct iwl_frame, list);
 302 }
 303
 304 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 305 {
 306         memset(frame, 0, sizeof(*frame));
 307         list_add(&frame->list, &priv->free_frames);
 308 }
 309
 310 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
 311                                           struct ieee80211_hdr *hdr,
 312                                           int left)
 313 {
 314         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 315             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 316              (priv->iw_mode != NL80211_IFTYPE_AP)))
 317                 return 0;
 318
 319         if (priv->ibss_beacon->len > left)
 320                 return 0;
 321
 322         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 323
 324         return priv->ibss_beacon->len;
 325 }
 326
 327 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 328 static void iwl_set_beacon_tim(struct iwl_priv *priv,
 329                 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 330                 u8 *beacon, u32 frame_size)
 331 {
 332         u16 tim_idx;
 333         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 334
 335         /*
 336          * The index is relative to frame start but we start looking at the
 337          * variable-length part of the beacon.
 338          */
 339         tim_idx = mgmt->u.beacon.variable - beacon;
 340
 341         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 342         while ((tim_idx < (frame_size - 2)) &&
 343                         (beacon[tim_idx] != WLAN_EID_TIM))
 344                 tim_idx += beacon[tim_idx+1] + 2;
 345
 346         /* If TIM field was found, set variables */
 347         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 348                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 349                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 350         } else
 351                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 352 }
 353
 354 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 355                                        struct iwl_frame *frame)
 356 {
 357         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 358         u32 frame_size;
 359         u32 rate_flags;
 360         u32 rate;
 361         /*
 362          * We have to set up the TX command, the TX Beacon command, and the
 363          * beacon contents.
 364          */
 365
 366         /* Initialize memory */
 367         tx_beacon_cmd = &frame->u.beacon;
 368         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 369
 370         /* Set up TX beacon contents */
 371         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 372                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 373         if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
 374                 return 0;
 375
 376         /* Set up TX command fields */
 377         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 378         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 379         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 380         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 381                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 382
 383         /* Set up TX beacon command fields */
 384         iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
 385                         frame_size);
 386
 387         /* Set up packet rate and flags */
 388         rate = iwl_rate_get_lowest_plcp(priv);
 389         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant);
 390         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 391         if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
 392                 rate_flags |= RATE_MCS_CCK_MSK;
 393         tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
 394                         rate_flags);
 395
 396         return sizeof(*tx_beacon_cmd) + frame_size;
 397 }
 398 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 399 {
 400         struct iwl_frame *frame;
 401         unsigned int frame_size;
 402         int rc;
 403
 404         frame = iwl_get_free_frame(priv);
 405         if (!frame) {
 406                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 407                           "command.\n");
 408                 return -ENOMEM;
 409         }
 410
 411         frame_size = iwl_hw_get_beacon_cmd(priv, frame);
 412         if (!frame_size) {
 413                 IWL_ERR(priv, "Error configuring the beacon command\n");
 414                 iwl_free_frame(priv, frame);
 415                 return -EINVAL;
 416         }
 417
 418         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 419                               &frame->u.cmd[0]);
 420
 421         iwl_free_frame(priv, frame);
 422
 423         return rc;
 424 }
 425
 426 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 427 {
 428         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 429
 430         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 431         if (sizeof(dma_addr_t) > sizeof(u32))
 432                 addr |=
 433                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 434
 435         return addr;
 436 }
 437
 438 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 439 {
 440         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 441
 442         return le16_to_cpu(tb->hi_n_len) >> 4;
 443 }
 444
 445 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 446                                   dma_addr_t addr, u16 len)
 447 {
 448         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 449         u16 hi_n_len = len << 4;
 450
 451         put_unaligned_le32(addr, &tb->lo);
 452         if (sizeof(dma_addr_t) > sizeof(u32))
 453                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 454
 455         tb->hi_n_len = cpu_to_le16(hi_n_len);
 456
 457         tfd->num_tbs = idx + 1;
 458 }
 459
 460 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 461 {
 462         return tfd->num_tbs & 0x1f;
 463 }
 464
 465 /**
 466  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 467  * @priv - driver private data
 468  * @txq - tx queue
 469  *
 470  * Does NOT advance any TFD circular buffer read/write indexes
 471  * Does NOT free the TFD itself (which is within circular buffer)
 472  */
 473 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 474 {
 475         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 476         struct iwl_tfd *tfd;
 477         struct pci_dev *dev = priv->pci_dev;
 478         int index = txq->q.read_ptr;
 479         int i;
 480         int num_tbs;
 481
 482         tfd = &tfd_tmp[index];
 483
 484         /* Sanity check on number of chunks */
 485         num_tbs = iwl_tfd_get_num_tbs(tfd);
 486
 487         if (num_tbs >= IWL_NUM_OF_TBS) {
 488                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 489                 /* @todo issue fatal error, it is quite serious situation */
 490                 return;
 491         }
 492
 493         /* Unmap tx_cmd */
 494         if (num_tbs)
 495                 pci_unmap_single(dev,
 496                                 pci_unmap_addr(&txq->meta[index], mapping),
 497                                 pci_unmap_len(&txq->meta[index], len),
 498                                 PCI_DMA_BIDIRECTIONAL);
 499
 500         /* Unmap chunks, if any. */
 501         for (i = 1; i < num_tbs; i++) {
 502                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 503                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 504
 505                 if (txq->txb) {
 506                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 507                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 508                 }
 509         }
 510 }
 511
 512 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 513                                  struct iwl_tx_queue *txq,
 514                                  dma_addr_t addr, u16 len,
 515                                  u8 reset, u8 pad)
 516 {
 517         struct iwl_queue *q;
 518         struct iwl_tfd *tfd, *tfd_tmp;
 519         u32 num_tbs;
 520
 521         q = &txq->q;
 522         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 523         tfd = &tfd_tmp[q->write_ptr];
 524
 525         if (reset)
 526                 memset(tfd, 0, sizeof(*tfd));
 527
 528         num_tbs = iwl_tfd_get_num_tbs(tfd);
 529
 530         /* Each TFD can point to a maximum 20 Tx buffers */
 531         if (num_tbs >= IWL_NUM_OF_TBS) {
 532                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 533                           IWL_NUM_OF_TBS);
 534                 return -EINVAL;
 535         }
 536
 537         BUG_ON(addr & ~DMA_BIT_MASK(36));
 538         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 539                 IWL_ERR(priv, "Unaligned address = %llx\n",
 540                           (unsigned long long)addr);
 541
 542         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 543
 544         return 0;
 545 }
 546
 547 /*
 548  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 549  * given Tx queue, and enable the DMA channel used for that queue.
 550  *
 551  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 552  * channels supported in hardware.
 553  */
 554 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 555                          struct iwl_tx_queue *txq)
 556 {
 557         int txq_id = txq->q.id;
 558
 559         /* Circular buffer (TFD queue in DRAM) physical base address */
 560         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 561                              txq->q.dma_addr >> 8);
 562
 563         return 0;
 564 }
 565
 566 /******************************************************************************
 567  *
 568  * Generic RX handler implementations
 569  *
 570  ******************************************************************************/
 571 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 572                                 struct iwl_rx_mem_buffer *rxb)
 573 {
 574         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 575         struct iwl_alive_resp *palive;
 576         struct delayed_work *pwork;
 577
 578         palive = &pkt->u.alive_frame;
 579
 580         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 581                        "0x%01X 0x%01X\n",
 582                        palive->is_valid, palive->ver_type,
 583                        palive->ver_subtype);
 584
 585         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 586                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 587                 memcpy(&priv->card_alive_init,
 588                        &pkt->u.alive_frame,
 589                        sizeof(struct iwl_init_alive_resp));
 590                 pwork = &priv->init_alive_start;
 591         } else {
 592                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 593                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 594                        sizeof(struct iwl_alive_resp));
 595                 pwork = &priv->alive_start;
 596         }
 597
 598         /* We delay the ALIVE response by 5ms to
 599          * give the HW RF Kill time to activate... */
 600         if (palive->is_valid == UCODE_VALID_OK)
 601                 queue_delayed_work(priv->workqueue, pwork,
 602                                    msecs_to_jiffies(5));
 603         else
 604                 IWL_WARN(priv, "uCode did not respond OK.\n");
 605 }
 606
 607 static void iwl_bg_beacon_update(struct work_struct *work)
 608 {
 609         struct iwl_priv *priv =
 610                 container_of(work, struct iwl_priv, beacon_update);
 611         struct sk_buff *beacon;
 612
 613         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 614         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 615
 616         if (!beacon) {
 617                 IWL_ERR(priv, "update beacon failed\n");
 618                 return;
 619         }
 620
 621         mutex_lock(&priv->mutex);
 622         /* new beacon skb is allocated every time; dispose previous.*/
 623         if (priv->ibss_beacon)
 624                 dev_kfree_skb(priv->ibss_beacon);
 625
 626         priv->ibss_beacon = beacon;
 627         mutex_unlock(&priv->mutex);
 628
 629         iwl_send_beacon_cmd(priv);
 630 }
 631
 632 /**
 633  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 634  *
 635  * This callback is provided in order to send a statistics request.
 636  *
 637  * This timer function is continually reset to execute within
 638  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 639  * was received.  We need to ensure we receive the statistics in order
 640  * to update the temperature used for calibrating the TXPOWER.
 641  */
 642 static void iwl_bg_statistics_periodic(unsigned long data)
 643 {
 644         struct iwl_priv *priv = (struct iwl_priv *)data;
 645
 646         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 647                 return;
 648
 649         /* dont send host command if rf-kill is on */
 650         if (!iwl_is_ready_rf(priv))
 651                 return;
 652
 653         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 654 }
 655
 656
 657 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 658                                         u32 start_idx, u32 num_events,
 659                                         u32 mode)
 660 {
 661         u32 i;
 662         u32 ptr;        /* SRAM byte address of log data */
 663         u32 ev, time, data; /* event log data */
 664         unsigned long reg_flags;
 665
 666         if (mode == 0)
 667                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 668         else
 669                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 670
 671         /* Make sure device is powered up for SRAM reads */
 672         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 673         if (iwl_grab_nic_access(priv)) {
 674                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 675                 return;
 676         }
 677
 678         /* Set starting address; reads will auto-increment */
 679         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
 680         rmb();
 681
 682         /*
 683          * "time" is actually "data" for mode 0 (no timestamp).
 684          * place event id # at far right for easier visual parsing.
 685          */
 686         for (i = 0; i < num_events; i++) {
 687                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 688                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 689                 if (mode == 0) {
 690                         trace_iwlwifi_dev_ucode_cont_event(priv,
 691                                                         0, time, ev);
 692                 } else {
 693                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 694                         trace_iwlwifi_dev_ucode_cont_event(priv,
 695                                                 time, data, ev);
 696                 }
 697         }
 698         /* Allow device to power down */
 699         iwl_release_nic_access(priv);
 700         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 701 }
 702
 703 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 704 {
 705         u32 capacity;   /* event log capacity in # entries */
 706         u32 base;       /* SRAM byte address of event log header */
 707         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 708         u32 num_wraps;  /* # times uCode wrapped to top of log */
 709         u32 next_entry; /* index of next entry to be written by uCode */
 710
 711         if (priv->ucode_type == UCODE_INIT)
 712                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
 713         else
 714                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
 715         if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
 716                 capacity = iwl_read_targ_mem(priv, base);
 717                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 718                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 719                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 720         } else
 721                 return;
 722
 723         if (num_wraps == priv->event_log.num_wraps) {
 724                 iwl_print_cont_event_trace(priv,
 725                                        base, priv->event_log.next_entry,
 726                                        next_entry - priv->event_log.next_entry,
 727                                        mode);
 728                 priv->event_log.non_wraps_count++;
 729         } else {
 730                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 731                         priv->event_log.wraps_more_count++;
 732                 else
 733                         priv->event_log.wraps_once_count++;
 734                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 735                                 num_wraps - priv->event_log.num_wraps,
 736                                 next_entry, priv->event_log.next_entry);
 737                 if (next_entry < priv->event_log.next_entry) {
 738                         iwl_print_cont_event_trace(priv, base,
 739                                priv->event_log.next_entry,
 740                                capacity - priv->event_log.next_entry,
 741                                mode);
 742
 743                         iwl_print_cont_event_trace(priv, base, 0,
 744                                 next_entry, mode);
 745                 } else {
 746                         iwl_print_cont_event_trace(priv, base,
 747                                next_entry, capacity - next_entry,
 748                                mode);
 749
 750                         iwl_print_cont_event_trace(priv, base, 0,
 751                                 next_entry, mode);
 752                 }
 753         }
 754         priv->event_log.num_wraps = num_wraps;
 755         priv->event_log.next_entry = next_entry;
 756 }
 757
 758 /**
 759  * iwl_bg_ucode_trace - Timer callback to log ucode event
 760  *
 761  * The timer is continually set to execute every
 762  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 763  * this function is to perform continuous uCode event logging operation
 764  * if enabled
 765  */
 766 static void iwl_bg_ucode_trace(unsigned long data)
 767 {
 768         struct iwl_priv *priv = (struct iwl_priv *)data;
 769
 770         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 771                 return;
 772
 773         if (priv->event_log.ucode_trace) {
 774                 iwl_continuous_event_trace(priv);
 775                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 776                 mod_timer(&priv->ucode_trace,
 777                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 778         }
 779 }
 780
 781 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 782                                 struct iwl_rx_mem_buffer *rxb)
 783 {
 784 #ifdef CONFIG_IWLWIFI_DEBUG
 785         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 786         struct iwl4965_beacon_notif *beacon =
 787                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 788         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 789
 790         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 791                 "tsf %d %d rate %d\n",
 792                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 793                 beacon->beacon_notify_hdr.failure_frame,
 794                 le32_to_cpu(beacon->ibss_mgr_status),
 795                 le32_to_cpu(beacon->high_tsf),
 796                 le32_to_cpu(beacon->low_tsf), rate);
 797 #endif
 798
 799         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 800             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 801                 queue_work(priv->workqueue, &priv->beacon_update);
 802 }
 803
 804 /* Handle notification from uCode that card's power state is changing
 805  * due to software, hardware, or critical temperature RFKILL */
 806 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 807                                     struct iwl_rx_mem_buffer *rxb)
 808 {
 809         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 810         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 811         unsigned long status = priv->status;
 812
 813         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
 814                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 815                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 816                           (flags & CT_CARD_DISABLED) ?
 817                           "Reached" : "Not reached");
 818
 819         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 820                      CT_CARD_DISABLED)) {
 821
 822                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 823                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 824
 825                 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 826                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 827
 828                 if (!(flags & RXON_CARD_DISABLED)) {
 829                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 830                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 831                         iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 832                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 833                 }
 834                 if (flags & CT_CARD_DISABLED)
 835                         iwl_tt_enter_ct_kill(priv);
 836         }
 837         if (!(flags & CT_CARD_DISABLED))
 838                 iwl_tt_exit_ct_kill(priv);
 839
 840         if (flags & HW_CARD_DISABLED)
 841                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 842         else
 843                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 844
 845
 846         if (!(flags & RXON_CARD_DISABLED))
 847                 iwl_scan_cancel(priv);
 848
 849         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 850              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 851                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 852                         test_bit(STATUS_RF_KILL_HW, &priv->status));
 853         else
 854                 wake_up_interruptible(&priv->wait_command_queue);
 855 }
 856
 857 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 858 {
 859         if (src == IWL_PWR_SRC_VAUX) {
 860                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
 861                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 862                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 863                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 864         } else {
 865                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 866                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 867                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 868         }
 869
 870         return 0;
 871 }
 872
 873 /**
 874  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 875  *
 876  * Setup the RX handlers for each of the reply types sent from the uCode
 877  * to the host.
 878  *
 879  * This function chains into the hardware specific files for them to setup
 880  * any hardware specific handlers as well.
 881  */
 882 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 883 {
 884         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 885         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 886         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 887         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
 888                         iwl_rx_spectrum_measure_notif;
 889         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 890         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 891             iwl_rx_pm_debug_statistics_notif;
 892         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 893
 894         /*
 895          * The same handler is used for both the REPLY to a discrete
 896          * statistics request from the host as well as for the periodic
 897          * statistics notifications (after received beacons) from the uCode.
 898          */
 899         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
 900         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 901
 902         iwl_setup_rx_scan_handlers(priv);
 903
 904         /* status change handler */
 905         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 906
 907         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 908             iwl_rx_missed_beacon_notif;
 909         /* Rx handlers */
 910         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
 911         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
 912         /* block ack */
 913         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
 914         /* Set up hardware specific Rx handlers */
 915         priv->cfg->ops->lib->rx_handler_setup(priv);
 916 }
 917
 918 /**
 919  * iwl_rx_handle - Main entry function for receiving responses from uCode
 920  *
 921  * Uses the priv->rx_handlers callback function array to invoke
 922  * the appropriate handlers, including command responses,
 923  * frame-received notifications, and other notifications.
 924  */
 925 void iwl_rx_handle(struct iwl_priv *priv)
 926 {
 927         struct iwl_rx_mem_buffer *rxb;
 928         struct iwl_rx_packet *pkt;
 929         struct iwl_rx_queue *rxq = &priv->rxq;
 930         u32 r, i;
 931         int reclaim;
 932         unsigned long flags;
 933         u8 fill_rx = 0;
 934         u32 count = 8;
 935         int total_empty;
 936
 937         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 938          * buffer that the driver may process (last buffer filled by ucode). */
 939         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 940         i = rxq->read;
 941
 942         /* Rx interrupt, but nothing sent from uCode */
 943         if (i == r)
 944                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
 945
 946         /* calculate total frames need to be restock after handling RX */
 947         total_empty = r - rxq->write_actual;
 948         if (total_empty < 0)
 949                 total_empty += RX_QUEUE_SIZE;
 950
 951         if (total_empty > (RX_QUEUE_SIZE / 2))
 952                 fill_rx = 1;
 953
 954         while (i != r) {
 955                 rxb = rxq->queue[i];
 956
 957                 /* If an RXB doesn't have a Rx queue slot associated with it,
 958                  * then a bug has been introduced in the queue refilling
 959                  * routines -- catch it here */
 960                 BUG_ON(rxb == NULL);
 961
 962                 rxq->queue[i] = NULL;
 963
 964                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
 965                                PAGE_SIZE << priv->hw_params.rx_page_order,
 966                                PCI_DMA_FROMDEVICE);
 967                 pkt = rxb_addr(rxb);
 968
 969                 trace_iwlwifi_dev_rx(priv, pkt,
 970                         le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
 971
 972                 /* Reclaim a command buffer only if this packet is a response
 973                  *   to a (driver-originated) command.
 974                  * If the packet (e.g. Rx frame) originated from uCode,
 975                  *   there is no command buffer to reclaim.
 976                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 977                  *   but apparently a few don't get set; catch them here. */
 978                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
 979                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
 980                         (pkt->hdr.cmd != REPLY_RX) &&
 981                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
 982                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
 983                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
 984                         (pkt->hdr.cmd != REPLY_TX);
 985
 986                 /* Based on type of command response or notification,
 987                  *   handle those that need handling via function in
 988                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
 989                 if (priv->rx_handlers[pkt->hdr.cmd]) {
 990                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
 991                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
 992                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
 993                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
 994                 } else {
 995                         /* No handling needed */
 996                         IWL_DEBUG_RX(priv,
 997                                 "r %d i %d No handler needed for %s, 0x%02x\n",
 998                                 r, i, get_cmd_string(pkt->hdr.cmd),
 999                                 pkt->hdr.cmd);
1000                 }
1001
1002                 /*
1003                  * XXX: After here, we should always check rxb->page
1004                  * against NULL before touching it or its virtual
1005                  * memory (pkt). Because some rx_handler might have
1006                  * already taken or freed the pages.
1007                  */
1008
1009                 if (reclaim) {
1010                         /* Invoke any callbacks, transfer the buffer to caller,
1011                          * and fire off the (possibly) blocking iwl_send_cmd()
1012                          * as we reclaim the driver command queue */
1013                         if (rxb->page)
1014                                 iwl_tx_cmd_complete(priv, rxb);
1015                         else
1016                                 IWL_WARN(priv, "Claim null rxb?\n");
1017                 }
1018
1019                 /* Reuse the page if possible. For notification packets and
1020                  * SKBs that fail to Rx correctly, add them back into the
1021                  * rx_free list for reuse later. */
1022                 spin_lock_irqsave(&rxq->lock, flags);
1023                 if (rxb->page != NULL) {
1024                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1025                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1026                                 PCI_DMA_FROMDEVICE);
1027                         list_add_tail(&rxb->list, &rxq->rx_free);
1028                         rxq->free_count++;
1029                 } else
1030                         list_add_tail(&rxb->list, &rxq->rx_used);
1031
1032                 spin_unlock_irqrestore(&rxq->lock, flags);
1033
1034                 i = (i + 1) & RX_QUEUE_MASK;
1035                 /* If there are a lot of unused frames,
1036                  * restock the Rx queue so ucode wont assert. */
1037                 if (fill_rx) {
1038                         count++;
1039                         if (count >= 8) {
1040                                 rxq->read = i;
1041                                 iwl_rx_replenish_now(priv);
1042                                 count = 0;
1043                         }
1044                 }
1045         }
1046
1047         /* Backtrack one entry */
1048         rxq->read = i;
1049         if (fill_rx)
1050                 iwl_rx_replenish_now(priv);
1051         else
1052                 iwl_rx_queue_restock(priv);
1053 }
1054
1055 /* call this function to flush any scheduled tasklet */
1056 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1057 {
1058         /* wait to make sure we flush pending tasklet*/
1059         synchronize_irq(priv->pci_dev->irq);
1060         tasklet_kill(&priv->irq_tasklet);
1061 }
1062
1063 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1064 {
1065         u32 inta, handled = 0;
1066         u32 inta_fh;
1067         unsigned long flags;
1068         u32 i;
1069 #ifdef CONFIG_IWLWIFI_DEBUG
1070         u32 inta_mask;
1071 #endif
1072
1073         spin_lock_irqsave(&priv->lock, flags);
1074
1075         /* Ack/clear/reset pending uCode interrupts.
1076          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1077          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1078         inta = iwl_read32(priv, CSR_INT);
1079         iwl_write32(priv, CSR_INT, inta);
1080
1081         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1082          * Any new interrupts that happen after this, either while we're
1083          * in this tasklet, or later, will show up in next ISR/tasklet. */
1084         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1085         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1086
1087 #ifdef CONFIG_IWLWIFI_DEBUG
1088         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1089                 /* just for debug */
1090                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1091                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1092                               inta, inta_mask, inta_fh);
1093         }
1094 #endif
1095
1096         spin_unlock_irqrestore(&priv->lock, flags);
1097
1098         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1099          * atomic, make sure that inta covers all the interrupts that
1100          * we've discovered, even if FH interrupt came in just after
1101          * reading CSR_INT. */
1102         if (inta_fh & CSR49_FH_INT_RX_MASK)
1103                 inta |= CSR_INT_BIT_FH_RX;
1104         if (inta_fh & CSR49_FH_INT_TX_MASK)
1105                 inta |= CSR_INT_BIT_FH_TX;
1106
1107         /* Now service all interrupt bits discovered above. */
1108         if (inta & CSR_INT_BIT_HW_ERR) {
1109                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1110
1111                 /* Tell the device to stop sending interrupts */
1112                 iwl_disable_interrupts(priv);
1113
1114                 priv->isr_stats.hw++;
1115                 iwl_irq_handle_error(priv);
1116
1117                 handled |= CSR_INT_BIT_HW_ERR;
1118
1119                 return;
1120         }
1121
1122 #ifdef CONFIG_IWLWIFI_DEBUG
1123         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1124                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1125                 if (inta & CSR_INT_BIT_SCD) {
1126                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1127                                       "the frame/frames.\n");
1128                         priv->isr_stats.sch++;
1129                 }
1130
1131                 /* Alive notification via Rx interrupt will do the real work */
1132                 if (inta & CSR_INT_BIT_ALIVE) {
1133                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1134                         priv->isr_stats.alive++;
1135                 }
1136         }
1137 #endif
1138         /* Safely ignore these bits for debug checks below */
1139         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1140
1141         /* HW RF KILL switch toggled */
1142         if (inta & CSR_INT_BIT_RF_KILL) {
1143                 int hw_rf_kill = 0;
1144                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1145                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1146                         hw_rf_kill = 1;
1147
1148                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1149                                 hw_rf_kill ? "disable radio" : "enable radio");
1150
1151                 priv->isr_stats.rfkill++;
1152
1153                 /* driver only loads ucode once setting the interface up.
1154                  * the driver allows loading the ucode even if the radio
1155                  * is killed. Hence update the killswitch state here. The
1156                  * rfkill handler will care about restarting if needed.
1157                  */
1158                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1159                         if (hw_rf_kill)
1160                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1161                         else
1162                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1163                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1164                 }
1165
1166                 handled |= CSR_INT_BIT_RF_KILL;
1167         }
1168
1169         /* Chip got too hot and stopped itself */
1170         if (inta & CSR_INT_BIT_CT_KILL) {
1171                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1172                 priv->isr_stats.ctkill++;
1173                 handled |= CSR_INT_BIT_CT_KILL;
1174         }
1175
1176         /* Error detected by uCode */
1177         if (inta & CSR_INT_BIT_SW_ERR) {
1178                 IWL_ERR(priv, "Microcode SW error detected. "
1179                         " Restarting 0x%X.\n", inta);
1180                 priv->isr_stats.sw++;
1181                 priv->isr_stats.sw_err = inta;
1182                 iwl_irq_handle_error(priv);
1183                 handled |= CSR_INT_BIT_SW_ERR;
1184         }
1185
1186         /*
1187          * uCode wakes up after power-down sleep.
1188          * Tell device about any new tx or host commands enqueued,
1189          * and about any Rx buffers made available while asleep.
1190          */
1191         if (inta & CSR_INT_BIT_WAKEUP) {
1192                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1193                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1194                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1195                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1196                 priv->isr_stats.wakeup++;
1197                 handled |= CSR_INT_BIT_WAKEUP;
1198         }
1199
1200         /* All uCode command responses, including Tx command responses,
1201          * Rx "responses" (frame-received notification), and other
1202          * notifications from uCode come through here*/
1203         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1204                 iwl_rx_handle(priv);
1205                 priv->isr_stats.rx++;
1206                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1207         }
1208
1209         /* This "Tx" DMA channel is used only for loading uCode */
1210         if (inta & CSR_INT_BIT_FH_TX) {
1211                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1212                 priv->isr_stats.tx++;
1213                 handled |= CSR_INT_BIT_FH_TX;
1214                 /* Wake up uCode load routine, now that load is complete */
1215                 priv->ucode_write_complete = 1;
1216                 wake_up_interruptible(&priv->wait_command_queue);
1217         }
1218
1219         if (inta & ~handled) {
1220                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1221                 priv->isr_stats.unhandled++;
1222         }
1223
1224         if (inta & ~(priv->inta_mask)) {
1225                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1226                          inta & ~priv->inta_mask);
1227                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1228         }
1229
1230         /* Re-enable all interrupts */
1231         /* only Re-enable if diabled by irq */
1232         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1233                 iwl_enable_interrupts(priv);
1234
1235 #ifdef CONFIG_IWLWIFI_DEBUG
1236         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1237                 inta = iwl_read32(priv, CSR_INT);
1238                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1239                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1240                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1241                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1242         }
1243 #endif
1244 }
1245
1246 /* tasklet for iwlagn interrupt */
1247 static void iwl_irq_tasklet(struct iwl_priv *priv)
1248 {
1249         u32 inta = 0;
1250         u32 handled = 0;
1251         unsigned long flags;
1252         u32 i;
1253 #ifdef CONFIG_IWLWIFI_DEBUG
1254         u32 inta_mask;
1255 #endif
1256
1257         spin_lock_irqsave(&priv->lock, flags);
1258
1259         /* Ack/clear/reset pending uCode interrupts.
1260          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1261          */
1262         /* There is a hardware bug in the interrupt mask function that some
1263          * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1264          * they are disabled in the CSR_INT_MASK register. Furthermore the
1265          * ICT interrupt handling mechanism has another bug that might cause
1266          * these unmasked interrupts fail to be detected. We workaround the
1267          * hardware bugs here by ACKing all the possible interrupts so that
1268          * interrupt coalescing can still be achieved.
1269          */
1270         iwl_write32(priv, CSR_INT, priv->inta | ~priv->inta_mask);
1271
1272         inta = priv->inta;
1273
1274 #ifdef CONFIG_IWLWIFI_DEBUG
1275         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1276                 /* just for debug */
1277                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1278                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1279                                 inta, inta_mask);
1280         }
1281 #endif
1282
1283         spin_unlock_irqrestore(&priv->lock, flags);
1284
1285         /* saved interrupt in inta variable now we can reset priv->inta */
1286         priv->inta = 0;
1287
1288         /* Now service all interrupt bits discovered above. */
1289         if (inta & CSR_INT_BIT_HW_ERR) {
1290                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1291
1292                 /* Tell the device to stop sending interrupts */
1293                 iwl_disable_interrupts(priv);
1294
1295                 priv->isr_stats.hw++;
1296                 iwl_irq_handle_error(priv);
1297
1298                 handled |= CSR_INT_BIT_HW_ERR;
1299
1300                 return;
1301         }
1302
1303 #ifdef CONFIG_IWLWIFI_DEBUG
1304         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1305                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1306                 if (inta & CSR_INT_BIT_SCD) {
1307                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1308                                       "the frame/frames.\n");
1309                         priv->isr_stats.sch++;
1310                 }
1311
1312                 /* Alive notification via Rx interrupt will do the real work */
1313                 if (inta & CSR_INT_BIT_ALIVE) {
1314                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1315                         priv->isr_stats.alive++;
1316                 }
1317         }
1318 #endif
1319         /* Safely ignore these bits for debug checks below */
1320         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1321
1322         /* HW RF KILL switch toggled */
1323         if (inta & CSR_INT_BIT_RF_KILL) {
1324                 int hw_rf_kill = 0;
1325                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1326                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1327                         hw_rf_kill = 1;
1328
1329                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1330                                 hw_rf_kill ? "disable radio" : "enable radio");
1331
1332                 priv->isr_stats.rfkill++;
1333
1334                 /* driver only loads ucode once setting the interface up.
1335                  * the driver allows loading the ucode even if the radio
1336                  * is killed. Hence update the killswitch state here. The
1337                  * rfkill handler will care about restarting if needed.
1338                  */
1339                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1340                         if (hw_rf_kill)
1341                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1342                         else
1343                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1344                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1345                 }
1346
1347                 handled |= CSR_INT_BIT_RF_KILL;
1348         }
1349
1350         /* Chip got too hot and stopped itself */
1351         if (inta & CSR_INT_BIT_CT_KILL) {
1352                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1353                 priv->isr_stats.ctkill++;
1354                 handled |= CSR_INT_BIT_CT_KILL;
1355         }
1356
1357         /* Error detected by uCode */
1358         if (inta & CSR_INT_BIT_SW_ERR) {
1359                 IWL_ERR(priv, "Microcode SW error detected. "
1360                         " Restarting 0x%X.\n", inta);
1361                 priv->isr_stats.sw++;
1362                 priv->isr_stats.sw_err = inta;
1363                 iwl_irq_handle_error(priv);
1364                 handled |= CSR_INT_BIT_SW_ERR;
1365         }
1366
1367         /* uCode wakes up after power-down sleep */
1368         if (inta & CSR_INT_BIT_WAKEUP) {
1369                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1370                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1371                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1372                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1373
1374                 priv->isr_stats.wakeup++;
1375
1376                 handled |= CSR_INT_BIT_WAKEUP;
1377         }
1378
1379         /* All uCode command responses, including Tx command responses,
1380          * Rx "responses" (frame-received notification), and other
1381          * notifications from uCode come through here*/
1382         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1383                         CSR_INT_BIT_RX_PERIODIC)) {
1384                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1385                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1386                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1387                         iwl_write32(priv, CSR_FH_INT_STATUS,
1388                                         CSR49_FH_INT_RX_MASK);
1389                 }
1390                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1391                         handled |= CSR_INT_BIT_RX_PERIODIC;
1392                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1393                 }
1394                 /* Sending RX interrupt require many steps to be done in the
1395                  * the device:
1396                  * 1- write interrupt to current index in ICT table.
1397                  * 2- dma RX frame.
1398                  * 3- update RX shared data to indicate last write index.
1399                  * 4- send interrupt.
1400                  * This could lead to RX race, driver could receive RX interrupt
1401                  * but the shared data changes does not reflect this;
1402                  * periodic interrupt will detect any dangling Rx activity.
1403                  */
1404
1405                 /* Disable periodic interrupt; we use it as just a one-shot. */
1406                 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1407                             CSR_INT_PERIODIC_DIS);
1408                 iwl_rx_handle(priv);
1409
1410                 /*
1411                  * Enable periodic interrupt in 8 msec only if we received
1412                  * real RX interrupt (instead of just periodic int), to catch
1413                  * any dangling Rx interrupt.  If it was just the periodic
1414                  * interrupt, there was no dangling Rx activity, and no need
1415                  * to extend the periodic interrupt; one-shot is enough.
1416                  */
1417                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1418                         iwl_write8(priv, CSR_INT_PERIODIC_REG,
1419                                     CSR_INT_PERIODIC_ENA);
1420
1421                 priv->isr_stats.rx++;
1422         }
1423
1424         /* This "Tx" DMA channel is used only for loading uCode */
1425         if (inta & CSR_INT_BIT_FH_TX) {
1426                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1427                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1428                 priv->isr_stats.tx++;
1429                 handled |= CSR_INT_BIT_FH_TX;
1430                 /* Wake up uCode load routine, now that load is complete */
1431                 priv->ucode_write_complete = 1;
1432                 wake_up_interruptible(&priv->wait_command_queue);
1433         }
1434
1435         if (inta & ~handled) {
1436                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1437                 priv->isr_stats.unhandled++;
1438         }
1439
1440         if (inta & ~(priv->inta_mask)) {
1441                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1442                          inta & ~priv->inta_mask);
1443         }
1444
1445         /* Re-enable all interrupts */
1446         /* only Re-enable if diabled by irq */
1447         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1448                 iwl_enable_interrupts(priv);
1449 }
1450
1451
1452 /******************************************************************************
1453  *
1454  * uCode download functions
1455  *
1456  ******************************************************************************/
1457
1458 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1459 {
1460         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1461         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1462         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1463         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1464         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1465         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1466 }
1467
1468 static void iwl_nic_start(struct iwl_priv *priv)
1469 {
1470         /* Remove all resets to allow NIC to operate */
1471         iwl_write32(priv, CSR_RESET, 0);
1472 }
1473
1474
1475 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1476 static int iwl_mac_setup_register(struct iwl_priv *priv);
1477
1478 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1479 {
1480         const char *name_pre = priv->cfg->fw_name_pre;
1481
1482         if (first)
1483                 priv->fw_index = priv->cfg->ucode_api_max;
1484         else
1485                 priv->fw_index--;
1486
1487         if (priv->fw_index < priv->cfg->ucode_api_min) {
1488                 IWL_ERR(priv, "no suitable firmware found!\n");
1489                 return -ENOENT;
1490         }
1491
1492         sprintf(priv->firmware_name, "%s%d%s",
1493                 name_pre, priv->fw_index, ".ucode");
1494
1495         IWL_DEBUG_INFO(priv, "attempting to load firmware '%s'\n",
1496                        priv->firmware_name);
1497
1498         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1499                                        &priv->pci_dev->dev, GFP_KERNEL, priv,
1500                                        iwl_ucode_callback);
1501 }
1502
1503 /**
1504  * iwl_ucode_callback - callback when firmware was loaded
1505  *
1506  * If loaded successfully, copies the firmware into buffers
1507  * for the card to fetch (via DMA).
1508  */
1509 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1510 {
1511         struct iwl_priv *priv = context;
1512         struct iwl_ucode_header *ucode;
1513         const unsigned int api_max = priv->cfg->ucode_api_max;
1514         const unsigned int api_min = priv->cfg->ucode_api_min;
1515         u8 *src;
1516         size_t len;
1517         u32 api_ver, build;
1518         u32 inst_size, data_size, init_size, init_data_size, boot_size;
1519         int err;
1520         u16 eeprom_ver;
1521
1522         if (!ucode_raw) {
1523                 IWL_ERR(priv, "request for firmware file '%s' failed.\n",
1524                         priv->firmware_name);
1525                 goto try_again;
1526         }
1527
1528         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1529                        priv->firmware_name, ucode_raw->size);
1530
1531         /* Make sure that we got at least the v1 header! */
1532         if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
1533                 IWL_ERR(priv, "File size way too small!\n");
1534                 goto try_again;
1535         }
1536
1537         /* Data from ucode file:  header followed by uCode images */
1538         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1539
1540         priv->ucode_ver = le32_to_cpu(ucode->ver);
1541         api_ver = IWL_UCODE_API(priv->ucode_ver);
1542         build = priv->cfg->ops->ucode->get_build(ucode, api_ver);
1543         inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
1544         data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
1545         init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
1546         init_data_size =
1547                 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
1548         boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
1549         src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
1550
1551         /* api_ver should match the api version forming part of the
1552          * firmware filename ... but we don't check for that and only rely
1553          * on the API version read from firmware header from here on forward */
1554
1555         if (api_ver < api_min || api_ver > api_max) {
1556                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1557                           "Driver supports v%u, firmware is v%u.\n",
1558                           api_max, api_ver);
1559                 goto try_again;
1560         }
1561
1562         if (api_ver != api_max)
1563                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1564                           "got v%u. New firmware can be obtained "
1565                           "from http://www.intellinuxwireless.org.\n",
1566                           api_max, api_ver);
1567
1568         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1569                IWL_UCODE_MAJOR(priv->ucode_ver),
1570                IWL_UCODE_MINOR(priv->ucode_ver),
1571                IWL_UCODE_API(priv->ucode_ver),
1572                IWL_UCODE_SERIAL(priv->ucode_ver));
1573
1574         snprintf(priv->hw->wiphy->fw_version,
1575                  sizeof(priv->hw->wiphy->fw_version),
1576                  "%u.%u.%u.%u",
1577                  IWL_UCODE_MAJOR(priv->ucode_ver),
1578                  IWL_UCODE_MINOR(priv->ucode_ver),
1579                  IWL_UCODE_API(priv->ucode_ver),
1580                  IWL_UCODE_SERIAL(priv->ucode_ver));
1581
1582         if (build)
1583                 IWL_DEBUG_INFO(priv, "Build %u\n", build);
1584
1585         eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
1586         IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
1587                        (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
1588                        ? "OTP" : "EEPROM", eeprom_ver);
1589
1590         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1591                        priv->ucode_ver);
1592         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1593                        inst_size);
1594         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1595                        data_size);
1596         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1597                        init_size);
1598         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1599                        init_data_size);
1600         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1601                        boot_size);
1602
1603         /*
1604          * For any of the failures below (before allocating pci memory)
1605          * we will try to load a version with a smaller API -- maybe the
1606          * user just got a corrupted version of the latest API.
1607          */
1608
1609         /* Verify size of file vs. image size info in file's header */
1610         if (ucode_raw->size !=
1611                 priv->cfg->ops->ucode->get_header_size(api_ver) +
1612                 inst_size + data_size + init_size +
1613                 init_data_size + boot_size) {
1614
1615                 IWL_DEBUG_INFO(priv,
1616                         "uCode file size %d does not match expected size\n",
1617                         (int)ucode_raw->size);
1618                 goto try_again;
1619         }
1620
1621         /* Verify that uCode images will fit in card's SRAM */
1622         if (inst_size > priv->hw_params.max_inst_size) {
1623                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1624                                inst_size);
1625                 goto try_again;
1626         }
1627
1628         if (data_size > priv->hw_params.max_data_size) {
1629                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1630                                 data_size);
1631                 goto try_again;
1632         }
1633         if (init_size > priv->hw_params.max_inst_size) {
1634                 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1635                         init_size);
1636                 goto try_again;
1637         }
1638         if (init_data_size > priv->hw_params.max_data_size) {
1639                 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1640                       init_data_size);
1641                 goto try_again;
1642         }
1643         if (boot_size > priv->hw_params.max_bsm_size) {
1644                 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1645                         boot_size);
1646                 goto try_again;
1647         }
1648
1649         /* Allocate ucode buffers for card's bus-master loading ... */
1650
1651         /* Runtime instructions and 2 copies of data:
1652          * 1) unmodified from disk
1653          * 2) backup cache for save/restore during power-downs */
1654         priv->ucode_code.len = inst_size;
1655         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1656
1657         priv->ucode_data.len = data_size;
1658         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1659
1660         priv->ucode_data_backup.len = data_size;
1661         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1662
1663         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1664             !priv->ucode_data_backup.v_addr)
1665                 goto err_pci_alloc;
1666
1667         /* Initialization instructions and data */
1668         if (init_size && init_data_size) {
1669                 priv->ucode_init.len = init_size;
1670                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1671
1672                 priv->ucode_init_data.len = init_data_size;
1673                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1674
1675                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1676                         goto err_pci_alloc;
1677         }
1678
1679         /* Bootstrap (instructions only, no data) */
1680         if (boot_size) {
1681                 priv->ucode_boot.len = boot_size;
1682                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1683
1684                 if (!priv->ucode_boot.v_addr)
1685                         goto err_pci_alloc;
1686         }
1687
1688         /* Copy images into buffers for card's bus-master reads ... */
1689
1690         /* Runtime instructions (first block of data in file) */
1691         len = inst_size;
1692         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1693         memcpy(priv->ucode_code.v_addr, src, len);
1694         src += len;
1695
1696         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1697                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1698
1699         /* Runtime data (2nd block)
1700          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1701         len = data_size;
1702         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1703         memcpy(priv->ucode_data.v_addr, src, len);
1704         memcpy(priv->ucode_data_backup.v_addr, src, len);
1705         src += len;
1706
1707         /* Initialization instructions (3rd block) */
1708         if (init_size) {
1709                 len = init_size;
1710                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1711                                 len);
1712                 memcpy(priv->ucode_init.v_addr, src, len);
1713                 src += len;
1714         }
1715
1716         /* Initialization data (4th block) */
1717         if (init_data_size) {
1718                 len = init_data_size;
1719                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1720                                len);
1721                 memcpy(priv->ucode_init_data.v_addr, src, len);
1722                 src += len;
1723         }
1724
1725         /* Bootstrap instructions (5th block) */
1726         len = boot_size;
1727         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1728         memcpy(priv->ucode_boot.v_addr, src, len);
1729
1730         /**************************************************
1731          * This is still part of probe() in a sense...
1732          *
1733          * 9. Setup and register with mac80211 and debugfs
1734          **************************************************/
1735         err = iwl_mac_setup_register(priv);
1736         if (err)
1737                 goto out_unbind;
1738
1739         err = iwl_dbgfs_register(priv, DRV_NAME);
1740         if (err)
1741                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1742
1743         /* We have our copies now, allow OS release its copies */
1744         release_firmware(ucode_raw);
1745         return;
1746
1747  try_again:
1748         /* try next, if any */
1749         if (iwl_request_firmware(priv, false))
1750                 goto out_unbind;
1751         release_firmware(ucode_raw);
1752         return;
1753
1754  err_pci_alloc:
1755         IWL_ERR(priv, "failed to allocate pci memory\n");
1756         iwl_dealloc_ucode_pci(priv);
1757  out_unbind:
1758         device_release_driver(&priv->pci_dev->dev);
1759         release_firmware(ucode_raw);
1760 }
1761
1762 static const char *desc_lookup_text[] = {
1763         "OK",
1764         "FAIL",
1765         "BAD_PARAM",
1766         "BAD_CHECKSUM",
1767         "NMI_INTERRUPT_WDG",
1768         "SYSASSERT",
1769         "FATAL_ERROR",
1770         "BAD_COMMAND",
1771         "HW_ERROR_TUNE_LOCK",
1772         "HW_ERROR_TEMPERATURE",
1773         "ILLEGAL_CHAN_FREQ",
1774         "VCC_NOT_STABLE",
1775         "FH_ERROR",
1776         "NMI_INTERRUPT_HOST",
1777         "NMI_INTERRUPT_ACTION_PT",
1778         "NMI_INTERRUPT_UNKNOWN",
1779         "UCODE_VERSION_MISMATCH",
1780         "HW_ERROR_ABS_LOCK",
1781         "HW_ERROR_CAL_LOCK_FAIL",
1782         "NMI_INTERRUPT_INST_ACTION_PT",
1783         "NMI_INTERRUPT_DATA_ACTION_PT",
1784         "NMI_TRM_HW_ER",
1785         "NMI_INTERRUPT_TRM",
1786         "NMI_INTERRUPT_BREAK_POINT"
1787         "DEBUG_0",
1788         "DEBUG_1",
1789         "DEBUG_2",
1790         "DEBUG_3",
1791         "ADVANCED SYSASSERT"
1792 };
1793
1794 static const char *desc_lookup(int i)
1795 {
1796         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1797
1798         if (i < 0 || i > max)
1799                 i = max;
1800
1801         return desc_lookup_text[i];
1802 }
1803
1804 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1805 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1806
1807 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1808 {
1809         u32 data2, line;
1810         u32 desc, time, count, base, data1;
1811         u32 blink1, blink2, ilink1, ilink2;
1812
1813         if (priv->ucode_type == UCODE_INIT)
1814                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1815         else
1816                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1817
1818         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1819                 IWL_ERR(priv,
1820                         "Not valid error log pointer 0x%08X for %s uCode\n",
1821                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
1822                 return;
1823         }
1824
1825         count = iwl_read_targ_mem(priv, base);
1826
1827         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1828                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1829                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1830                         priv->status, count);
1831         }
1832
1833         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1834         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1835         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1836         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1837         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1838         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1839         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1840         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1841         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1842
1843         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1844                                       blink1, blink2, ilink1, ilink2);
1845
1846         IWL_ERR(priv, "Desc                               Time       "
1847                 "data1      data2      line\n");
1848         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1849                 desc_lookup(desc), desc, time, data1, data2, line);
1850         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1851         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1852                 ilink1, ilink2);
1853
1854 }
1855
1856 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1857
1858 /**
1859  * iwl_print_event_log - Dump error event log to syslog
1860  *
1861  */
1862 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1863                                u32 num_events, u32 mode,
1864                                int pos, char **buf, size_t bufsz)
1865 {
1866         u32 i;
1867         u32 base;       /* SRAM byte address of event log header */
1868         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1869         u32 ptr;        /* SRAM byte address of log data */
1870         u32 ev, time, data; /* event log data */
1871         unsigned long reg_flags;
1872
1873         if (num_events == 0)
1874                 return pos;
1875         if (priv->ucode_type == UCODE_INIT)
1876                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1877         else
1878                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1879
1880         if (mode == 0)
1881                 event_size = 2 * sizeof(u32);
1882         else
1883                 event_size = 3 * sizeof(u32);
1884
1885         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1886
1887         /* Make sure device is powered up for SRAM reads */
1888         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1889         iwl_grab_nic_access(priv);
1890
1891         /* Set starting address; reads will auto-increment */
1892         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1893         rmb();
1894
1895         /* "time" is actually "data" for mode 0 (no timestamp).
1896         * place event id # at far right for easier visual parsing. */
1897         for (i = 0; i < num_events; i++) {
1898                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1899                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1900                 if (mode == 0) {
1901                         /* data, ev */
1902                         if (bufsz) {
1903                                 pos += scnprintf(*buf + pos, bufsz - pos,
1904                                                 "EVT_LOG:0x%08x:%04u\n",
1905                                                 time, ev);
1906                         } else {
1907                                 trace_iwlwifi_dev_ucode_event(priv, 0,
1908                                         time, ev);
1909                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1910                                         time, ev);
1911                         }
1912                 } else {
1913                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1914                         if (bufsz) {
1915                                 pos += scnprintf(*buf + pos, bufsz - pos,
1916                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1917                                                  time, data, ev);
1918                         } else {
1919                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1920                                         time, data, ev);
1921                                 trace_iwlwifi_dev_ucode_event(priv, time,
1922                                         data, ev);
1923                         }
1924                 }
1925         }
1926
1927         /* Allow device to power down */
1928         iwl_release_nic_access(priv);
1929         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1930         return pos;
1931 }
1932
1933 /**
1934  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1935  */
1936 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1937                                     u32 num_wraps, u32 next_entry,
1938                                     u32 size, u32 mode,
1939                                     int pos, char **buf, size_t bufsz)
1940 {
1941         /*
1942          * display the newest DEFAULT_LOG_ENTRIES entries
1943          * i.e the entries just before the next ont that uCode would fill.
1944          */
1945         if (num_wraps) {
1946                 if (next_entry < size) {
1947                         pos = iwl_print_event_log(priv,
1948                                                 capacity - (size - next_entry),
1949                                                 size - next_entry, mode,
1950                                                 pos, buf, bufsz);
1951                         pos = iwl_print_event_log(priv, 0,
1952                                                   next_entry, mode,
1953                                                   pos, buf, bufsz);
1954                 } else
1955                         pos = iwl_print_event_log(priv, next_entry - size,
1956                                                   size, mode, pos, buf, bufsz);
1957         } else {
1958                 if (next_entry < size) {
1959                         pos = iwl_print_event_log(priv, 0, next_entry,
1960                                                   mode, pos, buf, bufsz);
1961                 } else {
1962                         pos = iwl_print_event_log(priv, next_entry - size,
1963                                                   size, mode, pos, buf, bufsz);
1964                 }
1965         }
1966         return pos;
1967 }
1968
1969 /* For sanity check only.  Actual size is determined by uCode, typ. 512 */
1970 #define MAX_EVENT_LOG_SIZE (512)
1971
1972 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1973
1974 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1975                             char **buf, bool display)
1976 {
1977         u32 base;       /* SRAM byte address of event log header */
1978         u32 capacity;   /* event log capacity in # entries */
1979         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1980         u32 num_wraps;  /* # times uCode wrapped to top of log */
1981         u32 next_entry; /* index of next entry to be written by uCode */
1982         u32 size;       /* # entries that we'll print */
1983         int pos = 0;
1984         size_t bufsz = 0;
1985
1986         if (priv->ucode_type == UCODE_INIT)
1987                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1988         else
1989                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1990
1991         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1992                 IWL_ERR(priv,
1993                         "Invalid event log pointer 0x%08X for %s uCode\n",
1994                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
1995                 return -EINVAL;
1996         }
1997
1998         /* event log header */
1999         capacity = iwl_read_targ_mem(priv, base);
2000         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2001         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2002         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2003
2004         if (capacity > MAX_EVENT_LOG_SIZE) {
2005                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2006                         capacity, MAX_EVENT_LOG_SIZE);
2007                 capacity = MAX_EVENT_LOG_SIZE;
2008         }
2009
2010         if (next_entry > MAX_EVENT_LOG_SIZE) {
2011                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2012                         next_entry, MAX_EVENT_LOG_SIZE);
2013                 next_entry = MAX_EVENT_LOG_SIZE;
2014         }
2015
2016         size = num_wraps ? capacity : next_entry;
2017
2018         /* bail out if nothing in log */
2019         if (size == 0) {
2020                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2021                 return pos;
2022         }
2023
2024 #ifdef CONFIG_IWLWIFI_DEBUG
2025         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2026                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2027                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2028 #else
2029         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2030                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2031 #endif
2032         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2033                 size);
2034
2035 #ifdef CONFIG_IWLWIFI_DEBUG
2036         if (display) {
2037                 if (full_log)
2038                         bufsz = capacity * 48;
2039                 else
2040                         bufsz = size * 48;
2041                 *buf = kmalloc(bufsz, GFP_KERNEL);
2042                 if (!*buf)
2043                         return -ENOMEM;
2044         }
2045         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2046                 /*
2047                  * if uCode has wrapped back to top of log,
2048                  * start at the oldest entry,
2049                  * i.e the next one that uCode would fill.
2050                  */
2051                 if (num_wraps)
2052                         pos = iwl_print_event_log(priv, next_entry,
2053                                                 capacity - next_entry, mode,
2054                                                 pos, buf, bufsz);
2055                 /* (then/else) start at top of log */
2056                 pos = iwl_print_event_log(priv, 0,
2057                                           next_entry, mode, pos, buf, bufsz);
2058         } else
2059                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2060                                                 next_entry, size, mode,
2061                                                 pos, buf, bufsz);
2062 #else
2063         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2064                                         next_entry, size, mode,
2065                                         pos, buf, bufsz);
2066 #endif
2067         return pos;
2068 }
2069
2070 /**
2071  * iwl_alive_start - called after REPLY_ALIVE notification received
2072  *                   from protocol/runtime uCode (initialization uCode's
2073  *                   Alive gets handled by iwl_init_alive_start()).
2074  */
2075 static void iwl_alive_start(struct iwl_priv *priv)
2076 {
2077         int ret = 0;
2078
2079         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2080
2081         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2082                 /* We had an error bringing up the hardware, so take it
2083                  * all the way back down so we can try again */
2084                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2085                 goto restart;
2086         }
2087
2088         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2089          * This is a paranoid check, because we would not have gotten the
2090          * "runtime" alive if code weren't properly loaded.  */
2091         if (iwl_verify_ucode(priv)) {
2092                 /* Runtime instruction load was bad;
2093                  * take it all the way back down so we can try again */
2094                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2095                 goto restart;
2096         }
2097
2098         iwl_clear_stations_table(priv);
2099         ret = priv->cfg->ops->lib->alive_notify(priv);
2100         if (ret) {
2101                 IWL_WARN(priv,
2102                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
2103                 goto restart;
2104         }
2105
2106         /* After the ALIVE response, we can send host commands to the uCode */
2107         set_bit(STATUS_ALIVE, &priv->status);
2108
2109         if (iwl_is_rfkill(priv))
2110                 return;
2111
2112         ieee80211_wake_queues(priv->hw);
2113
2114         priv->active_rate = priv->rates_mask;
2115         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2116
2117         /* Configure Tx antenna selection based on H/W config */
2118         if (priv->cfg->ops->hcmd->set_tx_ant)
2119                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2120
2121         if (iwl_is_associated(priv)) {
2122                 struct iwl_rxon_cmd *active_rxon =
2123                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2124                 /* apply any changes in staging */
2125                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2126                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2127         } else {
2128                 /* Initialize our rx_config data */
2129                 iwl_connection_init_rx_config(priv, priv->iw_mode);
2130
2131                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2132                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2133
2134                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2135         }
2136
2137         /* Configure Bluetooth device coexistence support */
2138         iwl_send_bt_config(priv);
2139
2140         iwl_reset_run_time_calib(priv);
2141
2142         /* Configure the adapter for unassociated operation */
2143         iwlcore_commit_rxon(priv);
2144
2145         /* At this point, the NIC is initialized and operational */
2146         iwl_rf_kill_ct_config(priv);
2147
2148         iwl_leds_init(priv);
2149
2150         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2151         set_bit(STATUS_READY, &priv->status);
2152         wake_up_interruptible(&priv->wait_command_queue);
2153
2154         iwl_power_update_mode(priv, true);
2155
2156         /* reassociate for ADHOC mode */
2157         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2158                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2159                                                                 priv->vif);
2160                 if (beacon)
2161                         iwl_mac_beacon_update(priv->hw, beacon);
2162         }
2163
2164
2165         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2166                 iwl_set_mode(priv, priv->iw_mode);
2167
2168         return;
2169
2170  restart:
2171         queue_work(priv->workqueue, &priv->restart);
2172 }
2173
2174 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2175
2176 static void __iwl_down(struct iwl_priv *priv)
2177 {
2178         unsigned long flags;
2179         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2180
2181         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2182
2183         if (!exit_pending)
2184                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2185
2186         iwl_clear_stations_table(priv);
2187
2188         /* Unblock any waiting calls */
2189         wake_up_interruptible_all(&priv->wait_command_queue);
2190
2191         /* Wipe out the EXIT_PENDING status bit if we are not actually
2192          * exiting the module */
2193         if (!exit_pending)
2194                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2195
2196         /* stop and reset the on-board processor */
2197         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2198
2199         /* tell the device to stop sending interrupts */
2200         spin_lock_irqsave(&priv->lock, flags);
2201         iwl_disable_interrupts(priv);
2202         spin_unlock_irqrestore(&priv->lock, flags);
2203         iwl_synchronize_irq(priv);
2204
2205         if (priv->mac80211_registered)
2206                 ieee80211_stop_queues(priv->hw);
2207
2208         /* If we have not previously called iwl_init() then
2209          * clear all bits but the RF Kill bit and return */
2210         if (!iwl_is_init(priv)) {
2211                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2212                                         STATUS_RF_KILL_HW |
2213                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2214                                         STATUS_GEO_CONFIGURED |
2215                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2216                                         STATUS_EXIT_PENDING;
2217                 goto exit;
2218         }
2219
2220         /* ...otherwise clear out all the status bits but the RF Kill
2221          * bit and continue taking the NIC down. */
2222         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2223                                 STATUS_RF_KILL_HW |
2224                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2225                                 STATUS_GEO_CONFIGURED |
2226                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2227                                 STATUS_FW_ERROR |
2228                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2229                                 STATUS_EXIT_PENDING;
2230
2231         /* device going down, Stop using ICT table */
2232         iwl_disable_ict(priv);
2233
2234         iwl_txq_ctx_stop(priv);
2235         iwl_rxq_stop(priv);
2236
2237         /* Power-down device's busmaster DMA clocks */
2238         iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2239         udelay(5);
2240
2241         /* Make sure (redundant) we've released our request to stay awake */
2242         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2243
2244         /* Stop the device, and put it in low power state */
2245         priv->cfg->ops->lib->apm_ops.stop(priv);
2246
2247  exit:
2248         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2249
2250         if (priv->ibss_beacon)
2251                 dev_kfree_skb(priv->ibss_beacon);
2252         priv->ibss_beacon = NULL;
2253
2254         /* clear out any free frames */
2255         iwl_clear_free_frames(priv);
2256 }
2257
2258 static void iwl_down(struct iwl_priv *priv)
2259 {
2260         mutex_lock(&priv->mutex);
2261         __iwl_down(priv);
2262         mutex_unlock(&priv->mutex);
2263
2264         iwl_cancel_deferred_work(priv);
2265 }
2266
2267 #define HW_READY_TIMEOUT (50)
2268
2269 static int iwl_set_hw_ready(struct iwl_priv *priv)
2270 {
2271         int ret = 0;
2272
2273         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2274                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2275
2276         /* See if we got it */
2277         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2278                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2279                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2280                                 HW_READY_TIMEOUT);
2281         if (ret != -ETIMEDOUT)
2282                 priv->hw_ready = true;
2283         else
2284                 priv->hw_ready = false;
2285
2286         IWL_DEBUG_INFO(priv, "hardware %s\n",
2287                       (priv->hw_ready == 1) ? "ready" : "not ready");
2288         return ret;
2289 }
2290
2291 static int iwl_prepare_card_hw(struct iwl_priv *priv)
2292 {
2293         int ret = 0;
2294
2295         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n");
2296
2297         ret = iwl_set_hw_ready(priv);
2298         if (priv->hw_ready)
2299                 return ret;
2300
2301         /* If HW is not ready, prepare the conditions to check again */
2302         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2303                         CSR_HW_IF_CONFIG_REG_PREPARE);
2304
2305         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2306                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2307                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2308
2309         /* HW should be ready by now, check again. */
2310         if (ret != -ETIMEDOUT)
2311                 iwl_set_hw_ready(priv);
2312
2313         return ret;
2314 }
2315
2316 #define MAX_HW_RESTARTS 5
2317
2318 static int __iwl_up(struct iwl_priv *priv)
2319 {
2320         int i;
2321         int ret;
2322
2323         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2324                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2325                 return -EIO;
2326         }
2327
2328         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2329                 IWL_ERR(priv, "ucode not available for device bringup\n");
2330                 return -EIO;
2331         }
2332
2333         iwl_prepare_card_hw(priv);
2334
2335         if (!priv->hw_ready) {
2336                 IWL_WARN(priv, "Exit HW not ready\n");
2337                 return -EIO;
2338         }
2339
2340         /* If platform's RF_KILL switch is NOT set to KILL */
2341         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2342                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2343         else
2344                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2345
2346         if (iwl_is_rfkill(priv)) {
2347                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2348
2349                 iwl_enable_interrupts(priv);
2350                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2351                 return 0;
2352         }
2353
2354         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2355
2356         ret = iwl_hw_nic_init(priv);
2357         if (ret) {
2358                 IWL_ERR(priv, "Unable to init nic\n");
2359                 return ret;
2360         }
2361
2362         /* make sure rfkill handshake bits are cleared */
2363         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2364         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2365                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2366
2367         /* clear (again), then enable host interrupts */
2368         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2369         iwl_enable_interrupts(priv);
2370
2371         /* really make sure rfkill handshake bits are cleared */
2372         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2373         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2374
2375         /* Copy original ucode data image from disk into backup cache.
2376          * This will be used to initialize the on-board processor's
2377          * data SRAM for a clean start when the runtime program first loads. */
2378         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2379                priv->ucode_data.len);
2380
2381         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2382
2383                 iwl_clear_stations_table(priv);
2384
2385                 /* load bootstrap state machine,
2386                  * load bootstrap program into processor's memory,
2387                  * prepare to load the "initialize" uCode */
2388                 ret = priv->cfg->ops->lib->load_ucode(priv);
2389
2390                 if (ret) {
2391                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2392                                 ret);
2393                         continue;
2394                 }
2395
2396                 /* start card; "initialize" will load runtime ucode */
2397                 iwl_nic_start(priv);
2398
2399                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2400
2401                 return 0;
2402         }
2403
2404         set_bit(STATUS_EXIT_PENDING, &priv->status);
2405         __iwl_down(priv);
2406         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2407
2408         /* tried to restart and config the device for as long as our
2409          * patience could withstand */
2410         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2411         return -EIO;
2412 }
2413
2414
2415 /*****************************************************************************
2416  *
2417  * Workqueue callbacks
2418  *
2419  *****************************************************************************/
2420
2421 static void iwl_bg_init_alive_start(struct work_struct *data)
2422 {
2423         struct iwl_priv *priv =
2424             container_of(data, struct iwl_priv, init_alive_start.work);
2425
2426         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2427                 return;
2428
2429         mutex_lock(&priv->mutex);
2430         priv->cfg->ops->lib->init_alive_start(priv);
2431         mutex_unlock(&priv->mutex);
2432 }
2433
2434 static void iwl_bg_alive_start(struct work_struct *data)
2435 {
2436         struct iwl_priv *priv =
2437             container_of(data, struct iwl_priv, alive_start.work);
2438
2439         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2440                 return;
2441
2442         /* enable dram interrupt */
2443         iwl_reset_ict(priv);
2444
2445         mutex_lock(&priv->mutex);
2446         iwl_alive_start(priv);
2447         mutex_unlock(&priv->mutex);
2448 }
2449
2450 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2451 {
2452         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2453                         run_time_calib_work);
2454
2455         mutex_lock(&priv->mutex);
2456
2457         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2458             test_bit(STATUS_SCANNING, &priv->status)) {
2459                 mutex_unlock(&priv->mutex);
2460                 return;
2461         }
2462
2463         if (priv->start_calib) {
2464                 iwl_chain_noise_calibration(priv, &priv->statistics);
2465
2466                 iwl_sensitivity_calibration(priv, &priv->statistics);
2467         }
2468
2469         mutex_unlock(&priv->mutex);
2470         return;
2471 }
2472
2473 static void iwl_bg_restart(struct work_struct *data)
2474 {
2475         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2476
2477         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2478                 return;
2479
2480         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2481                 mutex_lock(&priv->mutex);
2482                 priv->vif = NULL;
2483                 priv->is_open = 0;
2484                 mutex_unlock(&priv->mutex);
2485                 iwl_down(priv);
2486                 ieee80211_restart_hw(priv->hw);
2487         } else {
2488                 iwl_down(priv);
2489
2490                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2491                         return;
2492
2493                 mutex_lock(&priv->mutex);
2494                 __iwl_up(priv);
2495                 mutex_unlock(&priv->mutex);
2496         }
2497 }
2498
2499 static void iwl_bg_rx_replenish(struct work_struct *data)
2500 {
2501         struct iwl_priv *priv =
2502             container_of(data, struct iwl_priv, rx_replenish);
2503
2504         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2505                 return;
2506
2507         mutex_lock(&priv->mutex);
2508         iwl_rx_replenish(priv);
2509         mutex_unlock(&priv->mutex);
2510 }
2511
2512 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2513
2514 void iwl_post_associate(struct iwl_priv *priv)
2515 {
2516         struct ieee80211_conf *conf = NULL;
2517         int ret = 0;
2518         unsigned long flags;
2519
2520         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2521                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2522                 return;
2523         }
2524
2525         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2526                         priv->assoc_id, priv->active_rxon.bssid_addr);
2527
2528
2529         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2530                 return;
2531
2532
2533         if (!priv->vif || !priv->is_open)
2534                 return;
2535
2536         iwl_scan_cancel_timeout(priv, 200);
2537
2538         conf = ieee80211_get_hw_conf(priv->hw);
2539
2540         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2541         iwlcore_commit_rxon(priv);
2542
2543         iwl_setup_rxon_timing(priv);
2544         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2545                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2546         if (ret)
2547                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2548                             "Attempting to continue.\n");
2549
2550         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2551
2552         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2553
2554         if (priv->cfg->ops->hcmd->set_rxon_chain)
2555                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2556
2557         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2558
2559         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2560                         priv->assoc_id, priv->beacon_int);
2561
2562         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2563                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2564         else
2565                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2566
2567         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2568                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2569                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2570                 else
2571                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2572
2573                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2574                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2575
2576         }
2577
2578         iwlcore_commit_rxon(priv);
2579
2580         switch (priv->iw_mode) {
2581         case NL80211_IFTYPE_STATION:
2582                 break;
2583
2584         case NL80211_IFTYPE_ADHOC:
2585
2586                 /* assume default assoc id */
2587                 priv->assoc_id = 1;
2588
2589                 iwl_rxon_add_station(priv, priv->bssid, 0);
2590                 iwl_send_beacon_cmd(priv);
2591
2592                 break;
2593
2594         default:
2595                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2596                           __func__, priv->iw_mode);
2597                 break;
2598         }
2599
2600         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2601                 priv->assoc_station_added = 1;
2602
2603         spin_lock_irqsave(&priv->lock, flags);
2604         iwl_activate_qos(priv, 0);
2605         spin_unlock_irqrestore(&priv->lock, flags);
2606
2607         /* the chain noise calibration will enabled PM upon completion
2608          * If chain noise has already been run, then we need to enable
2609          * power management here */
2610         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2611                 iwl_power_update_mode(priv, false);
2612
2613         /* Enable Rx differential gain and sensitivity calibrations */
2614         iwl_chain_noise_reset(priv);
2615         priv->start_calib = 1;
2616
2617 }
2618
2619 /*****************************************************************************
2620  *
2621  * mac80211 entry point functions
2622  *
2623  *****************************************************************************/
2624
2625 #define UCODE_READY_TIMEOUT     (4 * HZ)
2626
2627 /*
2628  * Not a mac80211 entry point function, but it fits in with all the
2629  * other mac80211 functions grouped here.
2630  */
2631 static int iwl_mac_setup_register(struct iwl_priv *priv)
2632 {
2633         int ret;
2634         struct ieee80211_hw *hw = priv->hw;
2635         hw->rate_control_algorithm = "iwl-agn-rs";
2636
2637         /* Tell mac80211 our characteristics */
2638         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2639                     IEEE80211_HW_NOISE_DBM |
2640                     IEEE80211_HW_AMPDU_AGGREGATION |
2641                     IEEE80211_HW_SPECTRUM_MGMT;
2642
2643         if (!priv->cfg->broken_powersave)
2644                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2645                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2646
2647         if (priv->cfg->sku & IWL_SKU_N)
2648                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2649                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2650
2651         hw->sta_data_size = sizeof(struct iwl_station_priv);
2652         hw->wiphy->interface_modes =
2653                 BIT(NL80211_IFTYPE_STATION) |
2654                 BIT(NL80211_IFTYPE_ADHOC);
2655
2656         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2657                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
2658
2659         /*
2660          * For now, disable PS by default because it affects
2661          * RX performance significantly.
2662          */
2663         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2664
2665         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2666         /* we create the 802.11 header and a zero-length SSID element */
2667         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
2668
2669         /* Default value; 4 EDCA QOS priorities */
2670         hw->queues = 4;
2671
2672         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2673
2674         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2675                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2676                         &priv->bands[IEEE80211_BAND_2GHZ];
2677         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2678                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2679                         &priv->bands[IEEE80211_BAND_5GHZ];
2680
2681         ret = ieee80211_register_hw(priv->hw);
2682         if (ret) {
2683                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2684                 return ret;
2685         }
2686         priv->mac80211_registered = 1;
2687
2688         return 0;
2689 }
2690
2691
2692 static int iwl_mac_start(struct ieee80211_hw *hw)
2693 {
2694         struct iwl_priv *priv = hw->priv;
2695         int ret;
2696
2697         IWL_DEBUG_MAC80211(priv, "enter\n");
2698
2699         /* we should be verifying the device is ready to be opened */
2700         mutex_lock(&priv->mutex);
2701         ret = __iwl_up(priv);
2702         mutex_unlock(&priv->mutex);
2703
2704         if (ret)
2705                 return ret;
2706
2707         if (iwl_is_rfkill(priv))
2708                 goto out;
2709
2710         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2711
2712         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2713          * mac80211 will not be run successfully. */
2714         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2715                         test_bit(STATUS_READY, &priv->status),
2716                         UCODE_READY_TIMEOUT);
2717         if (!ret) {
2718                 if (!test_bit(STATUS_READY, &priv->status)) {
2719                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2720                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2721                         return -ETIMEDOUT;
2722                 }
2723         }
2724
2725         iwl_led_start(priv);
2726
2727 out:
2728         priv->is_open = 1;
2729         IWL_DEBUG_MAC80211(priv, "leave\n");
2730         return 0;
2731 }
2732
2733 static void iwl_mac_stop(struct ieee80211_hw *hw)
2734 {
2735         struct iwl_priv *priv = hw->priv;
2736
2737         IWL_DEBUG_MAC80211(priv, "enter\n");
2738
2739         if (!priv->is_open)
2740                 return;
2741
2742         priv->is_open = 0;
2743
2744         if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
2745                 /* stop mac, cancel any scan request and clear
2746                  * RXON_FILTER_ASSOC_MSK BIT
2747                  */
2748                 mutex_lock(&priv->mutex);
2749                 iwl_scan_cancel_timeout(priv, 100);
2750                 mutex_unlock(&priv->mutex);
2751         }
2752
2753         iwl_down(priv);
2754
2755         flush_workqueue(priv->workqueue);
2756
2757         /* enable interrupts again in order to receive rfkill changes */
2758         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2759         iwl_enable_interrupts(priv);
2760
2761         IWL_DEBUG_MAC80211(priv, "leave\n");
2762 }
2763
2764 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2765 {
2766         struct iwl_priv *priv = hw->priv;
2767
2768         IWL_DEBUG_MACDUMP(priv, "enter\n");
2769
2770         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2771                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2772
2773         if (iwl_tx_skb(priv, skb))
2774                 dev_kfree_skb_any(skb);
2775
2776         IWL_DEBUG_MACDUMP(priv, "leave\n");
2777         return NETDEV_TX_OK;
2778 }
2779
2780 void iwl_config_ap(struct iwl_priv *priv)
2781 {
2782         int ret = 0;
2783         unsigned long flags;
2784
2785         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2786                 return;
2787
2788         /* The following should be done only at AP bring up */
2789         if (!iwl_is_associated(priv)) {
2790
2791                 /* RXON - unassoc (to set timing command) */
2792                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2793                 iwlcore_commit_rxon(priv);
2794
2795                 /* RXON Timing */
2796                 iwl_setup_rxon_timing(priv);
2797                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2798                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2799                 if (ret)
2800                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2801                                         "Attempting to continue.\n");
2802
2803                 /* AP has all antennas */
2804                 priv->chain_noise_data.active_chains =
2805                         priv->hw_params.valid_rx_ant;
2806                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2807                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2808                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2809
2810                 /* FIXME: what should be the assoc_id for AP? */
2811                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2812                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2813                         priv->staging_rxon.flags |=
2814                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2815                 else
2816                         priv->staging_rxon.flags &=
2817                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2818
2819                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2820                         if (priv->assoc_capability &
2821                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2822                                 priv->staging_rxon.flags |=
2823                                         RXON_FLG_SHORT_SLOT_MSK;
2824                         else
2825                                 priv->staging_rxon.flags &=
2826                                         ~RXON_FLG_SHORT_SLOT_MSK;
2827
2828                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2829                                 priv->staging_rxon.flags &=
2830                                         ~RXON_FLG_SHORT_SLOT_MSK;
2831                 }
2832                 /* restore RXON assoc */
2833                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2834                 iwlcore_commit_rxon(priv);
2835                 iwl_reset_qos(priv);
2836                 spin_lock_irqsave(&priv->lock, flags);
2837                 iwl_activate_qos(priv, 1);
2838                 spin_unlock_irqrestore(&priv->lock, flags);
2839                 iwl_add_bcast_station(priv);
2840         }
2841         iwl_send_beacon_cmd(priv);
2842
2843         /* FIXME - we need to add code here to detect a totally new
2844          * configuration, reset the AP, unassoc, rxon timing, assoc,
2845          * clear sta table, add BCAST sta... */
2846 }
2847
2848 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2849                                     struct ieee80211_vif *vif,
2850                                     struct ieee80211_key_conf *keyconf,
2851                                     struct ieee80211_sta *sta,
2852                                     u32 iv32, u16 *phase1key)
2853 {
2854
2855         struct iwl_priv *priv = hw->priv;
2856         IWL_DEBUG_MAC80211(priv, "enter\n");
2857
2858         iwl_update_tkip_key(priv, keyconf,
2859                             sta ? sta->addr : iwl_bcast_addr,
2860                             iv32, phase1key);
2861
2862         IWL_DEBUG_MAC80211(priv, "leave\n");
2863 }
2864
2865 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2866                            struct ieee80211_vif *vif,
2867                            struct ieee80211_sta *sta,
2868                            struct ieee80211_key_conf *key)
2869 {
2870         struct iwl_priv *priv = hw->priv;
2871         const u8 *addr;
2872         int ret;
2873         u8 sta_id;
2874         bool is_default_wep_key = false;
2875
2876         IWL_DEBUG_MAC80211(priv, "enter\n");
2877
2878         if (priv->cfg->mod_params->sw_crypto) {
2879                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2880                 return -EOPNOTSUPP;
2881         }
2882         addr = sta ? sta->addr : iwl_bcast_addr;
2883         sta_id = iwl_find_station(priv, addr);
2884         if (sta_id == IWL_INVALID_STATION) {
2885                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2886                                    addr);
2887                 return -EINVAL;
2888
2889         }
2890
2891         mutex_lock(&priv->mutex);
2892         iwl_scan_cancel_timeout(priv, 100);
2893         mutex_unlock(&priv->mutex);
2894
2895         /* If we are getting WEP group key and we didn't receive any key mapping
2896          * so far, we are in legacy wep mode (group key only), otherwise we are
2897          * in 1X mode.
2898          * In legacy wep mode, we use another host command to the uCode */
2899         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2900                 priv->iw_mode != NL80211_IFTYPE_AP) {
2901                 if (cmd == SET_KEY)
2902                         is_default_wep_key = !priv->key_mapping_key;
2903                 else
2904                         is_default_wep_key =
2905                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2906         }
2907
2908         switch (cmd) {
2909         case SET_KEY:
2910                 if (is_default_wep_key)
2911                         ret = iwl_set_default_wep_key(priv, key);
2912                 else
2913                         ret = iwl_set_dynamic_key(priv, key, sta_id);
2914
2915                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2916                 break;
2917         case DISABLE_KEY:
2918                 if (is_default_wep_key)
2919                         ret = iwl_remove_default_wep_key(priv, key);
2920                 else
2921                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
2922
2923                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2924                 break;
2925         default:
2926                 ret = -EINVAL;
2927         }
2928
2929         IWL_DEBUG_MAC80211(priv, "leave\n");
2930
2931         return ret;
2932 }
2933
2934 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2935                                 struct ieee80211_vif *vif,
2936                              enum ieee80211_ampdu_mlme_action action,
2937                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2938 {
2939         struct iwl_priv *priv = hw->priv;
2940         int ret;
2941
2942         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2943                      sta->addr, tid);
2944
2945         if (!(priv->cfg->sku & IWL_SKU_N))
2946                 return -EACCES;
2947
2948         switch (action) {
2949         case IEEE80211_AMPDU_RX_START:
2950                 IWL_DEBUG_HT(priv, "start Rx\n");
2951                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2952         case IEEE80211_AMPDU_RX_STOP:
2953                 IWL_DEBUG_HT(priv, "stop Rx\n");
2954                 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2955                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2956                         return 0;
2957                 else
2958                         return ret;
2959         case IEEE80211_AMPDU_TX_START:
2960                 IWL_DEBUG_HT(priv, "start Tx\n");
2961                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2962         case IEEE80211_AMPDU_TX_STOP:
2963                 IWL_DEBUG_HT(priv, "stop Tx\n");
2964                 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2965                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2966                         return 0;
2967                 else
2968                         return ret;
2969         case IEEE80211_AMPDU_TX_OPERATIONAL:
2970                 /* do nothing */
2971                 return -EOPNOTSUPP;
2972         default:
2973                 IWL_DEBUG_HT(priv, "unknown\n");
2974                 return -EINVAL;
2975                 break;
2976         }
2977         return 0;
2978 }
2979
2980 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2981                              struct ieee80211_low_level_stats *stats)
2982 {
2983         struct iwl_priv *priv = hw->priv;
2984
2985         priv = hw->priv;
2986         IWL_DEBUG_MAC80211(priv, "enter\n");
2987         IWL_DEBUG_MAC80211(priv, "leave\n");
2988
2989         return 0;
2990 }
2991
2992 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
2993                                struct ieee80211_vif *vif,
2994                                enum sta_notify_cmd cmd,
2995                                struct ieee80211_sta *sta)
2996 {
2997         struct iwl_priv *priv = hw->priv;
2998         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2999         int sta_id;
3000
3001         /*
3002          * TODO: We really should use this callback to
3003          *       actually maintain the station table in
3004          *       the device.
3005          */
3006
3007         switch (cmd) {
3008         case STA_NOTIFY_ADD:
3009                 atomic_set(&sta_priv->pending_frames, 0);
3010                 if (vif->type == NL80211_IFTYPE_AP)
3011                         sta_priv->client = true;
3012                 break;
3013         case STA_NOTIFY_SLEEP:
3014                 WARN_ON(!sta_priv->client);
3015                 sta_priv->asleep = true;
3016                 if (atomic_read(&sta_priv->pending_frames) > 0)
3017                         ieee80211_sta_block_awake(hw, sta, true);
3018                 break;
3019         case STA_NOTIFY_AWAKE:
3020                 WARN_ON(!sta_priv->client);
3021                 if (!sta_priv->asleep)
3022                         break;
3023                 sta_priv->asleep = false;
3024                 sta_id = iwl_find_station(priv, sta->addr);
3025                 if (sta_id != IWL_INVALID_STATION)
3026                         iwl_sta_modify_ps_wake(priv, sta_id);
3027                 break;
3028         default:
3029                 break;
3030         }
3031 }
3032
3033 /*****************************************************************************
3034  *
3035  * sysfs attributes
3036  *
3037  *****************************************************************************/
3038
3039 #ifdef CONFIG_IWLWIFI_DEBUG
3040
3041 /*
3042  * The following adds a new attribute to the sysfs representation
3043  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3044  * used for controlling the debug level.
3045  *
3046  * See the level definitions in iwl for details.
3047  *
3048  * The debug_level being managed using sysfs below is a per device debug
3049  * level that is used instead of the global debug level if it (the per
3050  * device debug level) is set.
3051  */
3052 static ssize_t show_debug_level(struct device *d,
3053                                 struct device_attribute *attr, char *buf)
3054 {
3055         struct iwl_priv *priv = dev_get_drvdata(d);
3056         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3057 }
3058 static ssize_t store_debug_level(struct device *d,
3059                                 struct device_attribute *attr,
3060                                  const char *buf, size_t count)
3061 {
3062         struct iwl_priv *priv = dev_get_drvdata(d);
3063         unsigned long val;
3064         int ret;
3065
3066         ret = strict_strtoul(buf, 0, &val);
3067         if (ret)
3068                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
3069         else {
3070                 priv->debug_level = val;
3071                 if (iwl_alloc_traffic_mem(priv))
3072                         IWL_ERR(priv,
3073                                 "Not enough memory to generate traffic log\n");
3074         }
3075         return strnlen(buf, count);
3076 }
3077
3078 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3079                         show_debug_level, store_debug_level);
3080
3081
3082 #endif /* CONFIG_IWLWIFI_DEBUG */
3083
3084
3085 static ssize_t show_temperature(struct device *d,
3086                                 struct device_attribute *attr, char *buf)
3087 {
3088         struct iwl_priv *priv = dev_get_drvdata(d);
3089
3090         if (!iwl_is_alive(priv))
3091                 return -EAGAIN;
3092
3093         return sprintf(buf, "%d\n", priv->temperature);
3094 }
3095
3096 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3097
3098 static ssize_t show_tx_power(struct device *d,
3099                              struct device_attribute *attr, char *buf)
3100 {
3101         struct iwl_priv *priv = dev_get_drvdata(d);
3102
3103         if (!iwl_is_ready_rf(priv))
3104                 return sprintf(buf, "off\n");
3105         else
3106                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3107 }
3108
3109 static ssize_t store_tx_power(struct device *d,
3110                               struct device_attribute *attr,
3111                               const char *buf, size_t count)
3112 {
3113         struct iwl_priv *priv = dev_get_drvdata(d);
3114         unsigned long val;
3115         int ret;
3116
3117         ret = strict_strtoul(buf, 10, &val);
3118         if (ret)
3119                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3120         else {
3121                 ret = iwl_set_tx_power(priv, val, false);
3122                 if (ret)
3123                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
3124                                 ret);
3125                 else
3126                         ret = count;
3127         }
3128         return ret;
3129 }
3130
3131 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3132
3133 static ssize_t show_flags(struct device *d,
3134                           struct device_attribute *attr, char *buf)
3135 {
3136         struct iwl_priv *priv = dev_get_drvdata(d);
3137
3138         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3139 }
3140
3141 static ssize_t store_flags(struct device *d,
3142                            struct device_attribute *attr,
3143                            const char *buf, size_t count)
3144 {
3145         struct iwl_priv *priv = dev_get_drvdata(d);
3146         unsigned long val;
3147         u32 flags;
3148         int ret = strict_strtoul(buf, 0, &val);
3149         if (ret)
3150                 return ret;
3151         flags = (u32)val;
3152
3153         mutex_lock(&priv->mutex);
3154         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3155                 /* Cancel any currently running scans... */
3156                 if (iwl_scan_cancel_timeout(priv, 100))
3157                         IWL_WARN(priv, "Could not cancel scan.\n");
3158                 else {
3159                         IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
3160                         priv->staging_rxon.flags = cpu_to_le32(flags);
3161                         iwlcore_commit_rxon(priv);
3162                 }
3163         }
3164         mutex_unlock(&priv->mutex);
3165
3166         return count;
3167 }
3168
3169 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3170
3171 static ssize_t show_filter_flags(struct device *d,
3172                                  struct device_attribute *attr, char *buf)
3173 {
3174         struct iwl_priv *priv = dev_get_drvdata(d);
3175
3176         return sprintf(buf, "0x%04X\n",
3177                 le32_to_cpu(priv->active_rxon.filter_flags));
3178 }
3179
3180 static ssize_t store_filter_flags(struct device *d,
3181                                   struct device_attribute *attr,
3182                                   const char *buf, size_t count)
3183 {
3184         struct iwl_priv *priv = dev_get_drvdata(d);
3185         unsigned long val;
3186         u32 filter_flags;
3187         int ret = strict_strtoul(buf, 0, &val);
3188         if (ret)
3189                 return ret;
3190         filter_flags = (u32)val;
3191
3192         mutex_lock(&priv->mutex);
3193         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3194                 /* Cancel any currently running scans... */
3195                 if (iwl_scan_cancel_timeout(priv, 100))
3196                         IWL_WARN(priv, "Could not cancel scan.\n");
3197                 else {
3198                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3199                                        "0x%04X\n", filter_flags);
3200                         priv->staging_rxon.filter_flags =
3201                                 cpu_to_le32(filter_flags);
3202                         iwlcore_commit_rxon(priv);
3203                 }
3204         }
3205         mutex_unlock(&priv->mutex);
3206
3207         return count;
3208 }
3209
3210 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3211                    store_filter_flags);
3212
3213
3214 static ssize_t show_statistics(struct device *d,
3215                                struct device_attribute *attr, char *buf)
3216 {
3217         struct iwl_priv *priv = dev_get_drvdata(d);
3218         u32 size = sizeof(struct iwl_notif_statistics);
3219         u32 len = 0, ofs = 0;
3220         u8 *data = (u8 *)&priv->statistics;
3221         int rc = 0;
3222
3223         if (!iwl_is_alive(priv))
3224                 return -EAGAIN;
3225
3226         mutex_lock(&priv->mutex);
3227         rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3228         mutex_unlock(&priv->mutex);
3229
3230         if (rc) {
3231                 len = sprintf(buf,
3232                               "Error sending statistics request: 0x%08X\n", rc);
3233                 return len;
3234         }
3235
3236         while (size && (PAGE_SIZE - len)) {
3237                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3238                                    PAGE_SIZE - len, 1);
3239                 len = strlen(buf);
3240                 if (PAGE_SIZE - len)
3241                         buf[len++] = '\n';
3242
3243                 ofs += 16;
3244                 size -= min(size, 16U);
3245         }
3246
3247         return len;
3248 }
3249
3250 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3251
3252 static ssize_t show_rts_ht_protection(struct device *d,
3253                              struct device_attribute *attr, char *buf)
3254 {
3255         struct iwl_priv *priv = dev_get_drvdata(d);
3256
3257         return sprintf(buf, "%s\n",
3258                 priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
3259 }
3260
3261 static ssize_t store_rts_ht_protection(struct device *d,
3262                               struct device_attribute *attr,
3263                               const char *buf, size_t count)
3264 {
3265         struct iwl_priv *priv = dev_get_drvdata(d);
3266         unsigned long val;
3267         int ret;
3268
3269         ret = strict_strtoul(buf, 10, &val);
3270         if (ret)
3271                 IWL_INFO(priv, "Input is not in decimal form.\n");
3272         else {
3273                 if (!iwl_is_associated(priv))
3274                         priv->cfg->use_rts_for_ht = val ? true : false;
3275                 else
3276                         IWL_ERR(priv, "Sta associated with AP - "
3277                                 "Change protection mechanism is not allowed\n");
3278                 ret = count;
3279         }
3280         return ret;
3281 }
3282
3283 static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
3284                         show_rts_ht_protection, store_rts_ht_protection);
3285
3286
3287 /*****************************************************************************
3288  *
3289  * driver setup and teardown
3290  *
3291  *****************************************************************************/
3292
3293 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3294 {
3295         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3296
3297         init_waitqueue_head(&priv->wait_command_queue);
3298
3299         INIT_WORK(&priv->restart, iwl_bg_restart);
3300         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3301         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3302         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3303         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3304         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3305
3306         iwl_setup_scan_deferred_work(priv);
3307
3308         if (priv->cfg->ops->lib->setup_deferred_work)
3309                 priv->cfg->ops->lib->setup_deferred_work(priv);
3310
3311         init_timer(&priv->statistics_periodic);
3312         priv->statistics_periodic.data = (unsigned long)priv;
3313         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3314
3315         init_timer(&priv->ucode_trace);
3316         priv->ucode_trace.data = (unsigned long)priv;
3317         priv->ucode_trace.function = iwl_bg_ucode_trace;
3318
3319         if (!priv->cfg->use_isr_legacy)
3320                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3321                         iwl_irq_tasklet, (unsigned long)priv);
3322         else
3323                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3324                         iwl_irq_tasklet_legacy, (unsigned long)priv);
3325 }
3326
3327 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3328 {
3329         if (priv->cfg->ops->lib->cancel_deferred_work)
3330                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3331
3332         cancel_delayed_work_sync(&priv->init_alive_start);
3333         cancel_delayed_work(&priv->scan_check);
3334         cancel_work_sync(&priv->start_internal_scan);
3335         cancel_delayed_work(&priv->alive_start);
3336         cancel_work_sync(&priv->beacon_update);
3337         del_timer_sync(&priv->statistics_periodic);
3338         del_timer_sync(&priv->ucode_trace);
3339 }
3340
3341 static void iwl_init_hw_rates(struct iwl_priv *priv,
3342                               struct ieee80211_rate *rates)
3343 {
3344         int i;
3345
3346         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3347                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3348                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3349                 rates[i].hw_value_short = i;
3350                 rates[i].flags = 0;
3351                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3352                         /*
3353                          * If CCK != 1M then set short preamble rate flag.
3354                          */
3355                         rates[i].flags |=
3356                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3357                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3358                 }
3359         }
3360 }
3361
3362 static int iwl_init_drv(struct iwl_priv *priv)
3363 {
3364         int ret;
3365
3366         priv->ibss_beacon = NULL;
3367
3368         spin_lock_init(&priv->sta_lock);
3369         spin_lock_init(&priv->hcmd_lock);
3370
3371         INIT_LIST_HEAD(&priv->free_frames);
3372
3373         mutex_init(&priv->mutex);
3374         mutex_init(&priv->sync_cmd_mutex);
3375
3376         /* Clear the driver's (not device's) station table */
3377         iwl_clear_stations_table(priv);
3378
3379         priv->ieee_channels = NULL;
3380         priv->ieee_rates = NULL;
3381         priv->band = IEEE80211_BAND_2GHZ;
3382
3383         priv->iw_mode = NL80211_IFTYPE_STATION;
3384         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3385         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3386
3387         /* initialize force reset */
3388         priv->force_reset[IWL_RF_RESET].reset_duration =
3389                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3390         priv->force_reset[IWL_FW_RESET].reset_duration =
3391                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3392
3393         /* Choose which receivers/antennas to use */
3394         if (priv->cfg->ops->hcmd->set_rxon_chain)
3395                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
3396
3397         iwl_init_scan_params(priv);
3398
3399         iwl_reset_qos(priv);
3400
3401         priv->qos_data.qos_active = 0;
3402         priv->qos_data.qos_cap.val = 0;
3403
3404         priv->rates_mask = IWL_RATES_MASK;
3405         /* Set the tx_power_user_lmt to the lowest power level
3406          * this value will get overwritten by channel max power avg
3407          * from eeprom */
3408         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
3409
3410         ret = iwl_init_channel_map(priv);
3411         if (ret) {
3412                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3413                 goto err;
3414         }
3415
3416         ret = iwlcore_init_geos(priv);
3417         if (ret) {
3418                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3419                 goto err_free_channel_map;
3420         }
3421         iwl_init_hw_rates(priv, priv->ieee_rates);
3422
3423         return 0;
3424
3425 err_free_channel_map:
3426         iwl_free_channel_map(priv);
3427 err:
3428         return ret;
3429 }
3430
3431 static void iwl_uninit_drv(struct iwl_priv *priv)
3432 {
3433         iwl_calib_free_results(priv);
3434         iwlcore_free_geos(priv);
3435         iwl_free_channel_map(priv);
3436         kfree(priv->scan);
3437 }
3438
3439 static struct attribute *iwl_sysfs_entries[] = {
3440         &dev_attr_flags.attr,
3441         &dev_attr_filter_flags.attr,
3442         &dev_attr_statistics.attr,
3443         &dev_attr_temperature.attr,
3444         &dev_attr_tx_power.attr,
3445         &dev_attr_rts_ht_protection.attr,
3446 #ifdef CONFIG_IWLWIFI_DEBUG
3447         &dev_attr_debug_level.attr,
3448 #endif
3449         NULL
3450 };
3451
3452 static struct attribute_group iwl_attribute_group = {
3453         .name = NULL,           /* put in device directory */
3454         .attrs = iwl_sysfs_entries,
3455 };
3456
3457 static struct ieee80211_ops iwl_hw_ops = {
3458         .tx = iwl_mac_tx,
3459         .start = iwl_mac_start,
3460         .stop = iwl_mac_stop,
3461         .add_interface = iwl_mac_add_interface,
3462         .remove_interface = iwl_mac_remove_interface,
3463         .config = iwl_mac_config,
3464         .configure_filter = iwl_configure_filter,
3465         .set_key = iwl_mac_set_key,
3466         .update_tkip_key = iwl_mac_update_tkip_key,
3467         .get_stats = iwl_mac_get_stats,
3468         .conf_tx = iwl_mac_conf_tx,
3469         .reset_tsf = iwl_mac_reset_tsf,
3470         .bss_info_changed = iwl_bss_info_changed,
3471         .ampdu_action = iwl_mac_ampdu_action,
3472         .hw_scan = iwl_mac_hw_scan,
3473         .sta_notify = iwl_mac_sta_notify,
3474 };
3475
3476 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3477 {
3478         int err = 0;
3479         struct iwl_priv *priv;
3480         struct ieee80211_hw *hw;
3481         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3482         unsigned long flags;
3483         u16 pci_cmd;
3484
3485         /************************
3486          * 1. Allocating HW data
3487          ************************/
3488
3489         /* Disabling hardware scan means that mac80211 will perform scans
3490          * "the hard way", rather than using device's scan. */
3491         if (cfg->mod_params->disable_hw_scan) {
3492                 if (iwl_debug_level & IWL_DL_INFO)
3493                         dev_printk(KERN_DEBUG, &(pdev->dev),
3494                                    "Disabling hw_scan\n");
3495                 iwl_hw_ops.hw_scan = NULL;
3496         }
3497
3498         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3499         if (!hw) {
3500                 err = -ENOMEM;
3501                 goto out;
3502         }
3503         priv = hw->priv;
3504         /* At this point both hw and priv are allocated. */
3505
3506         SET_IEEE80211_DEV(hw, &pdev->dev);
3507
3508         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3509         priv->cfg = cfg;
3510         priv->pci_dev = pdev;
3511         priv->inta_mask = CSR_INI_SET_MASK;
3512
3513 #ifdef CONFIG_IWLWIFI_DEBUG
3514         atomic_set(&priv->restrict_refcnt, 0);
3515 #endif
3516         if (iwl_alloc_traffic_mem(priv))
3517                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3518
3519         /**************************
3520          * 2. Initializing PCI bus
3521          **************************/
3522         if (pci_enable_device(pdev)) {
3523                 err = -ENODEV;
3524                 goto out_ieee80211_free_hw;
3525         }
3526
3527         pci_set_master(pdev);
3528
3529         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3530         if (!err)
3531                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3532         if (err) {
3533                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3534                 if (!err)
3535                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3536                 /* both attempts failed: */
3537                 if (err) {
3538                         IWL_WARN(priv, "No suitable DMA available.\n");
3539                         goto out_pci_disable_device;
3540                 }
3541         }
3542
3543         err = pci_request_regions(pdev, DRV_NAME);
3544         if (err)
3545                 goto out_pci_disable_device;
3546
3547         pci_set_drvdata(pdev, priv);
3548
3549
3550         /***********************
3551          * 3. Read REV register
3552          ***********************/
3553         priv->hw_base = pci_iomap(pdev, 0, 0);
3554         if (!priv->hw_base) {
3555                 err = -ENODEV;
3556                 goto out_pci_release_regions;
3557         }
3558
3559         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3560                 (unsigned long long) pci_resource_len(pdev, 0));
3561         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3562
3563         /* these spin locks will be used in apm_ops.init and EEPROM access
3564          * we should init now
3565          */
3566         spin_lock_init(&priv->reg_lock);
3567         spin_lock_init(&priv->lock);
3568
3569         /*
3570          * stop and reset the on-board processor just in case it is in a
3571          * strange state ... like being left stranded by a primary kernel
3572          * and this is now the kdump kernel trying to start up
3573          */
3574         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3575
3576         iwl_hw_detect(priv);
3577         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3578                 priv->cfg->name, priv->hw_rev);
3579
3580         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3581          * PCI Tx retries from interfering with C3 CPU state */
3582         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3583
3584         iwl_prepare_card_hw(priv);
3585         if (!priv->hw_ready) {
3586                 IWL_WARN(priv, "Failed, HW not ready\n");
3587                 goto out_iounmap;
3588         }
3589
3590         /*****************
3591          * 4. Read EEPROM
3592          *****************/
3593         /* Read the EEPROM */
3594         err = iwl_eeprom_init(priv);
3595         if (err) {
3596                 IWL_ERR(priv, "Unable to init EEPROM\n");
3597                 goto out_iounmap;
3598         }
3599         err = iwl_eeprom_check_version(priv);
3600         if (err)
3601                 goto out_free_eeprom;
3602
3603         /* extract MAC Address */
3604         iwl_eeprom_get_mac(priv, priv->mac_addr);
3605         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3606         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3607
3608         /************************
3609          * 5. Setup HW constants
3610          ************************/
3611         if (iwl_set_hw_params(priv)) {
3612                 IWL_ERR(priv, "failed to set hw parameters\n");
3613                 goto out_free_eeprom;
3614         }
3615
3616         /*******************
3617          * 6. Setup priv
3618          *******************/
3619
3620         err = iwl_init_drv(priv);
3621         if (err)
3622                 goto out_free_eeprom;
3623         /* At this point both hw and priv are initialized. */
3624
3625         /********************
3626          * 7. Setup services
3627          ********************/
3628         spin_lock_irqsave(&priv->lock, flags);
3629         iwl_disable_interrupts(priv);
3630         spin_unlock_irqrestore(&priv->lock, flags);
3631
3632         pci_enable_msi(priv->pci_dev);
3633
3634         iwl_alloc_isr_ict(priv);
3635         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
3636                           IRQF_SHARED, DRV_NAME, priv);
3637         if (err) {
3638                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3639                 goto out_disable_msi;
3640         }
3641         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3642         if (err) {
3643                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3644                 goto out_free_irq;
3645         }
3646
3647         iwl_setup_deferred_work(priv);
3648         iwl_setup_rx_handlers(priv);
3649
3650         /*********************************************
3651          * 8. Enable interrupts and read RFKILL state
3652          *********************************************/
3653
3654         /* enable interrupts if needed: hw bug w/a */
3655         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3656         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3657                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3658                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3659         }
3660
3661         iwl_enable_interrupts(priv);
3662
3663         /* If platform's RF_KILL switch is NOT set to KILL */
3664         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3665                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3666         else
3667                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3668
3669         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3670                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3671
3672         iwl_power_initialize(priv);
3673         iwl_tt_initialize(priv);
3674
3675         err = iwl_request_firmware(priv, true);
3676         if (err)
3677                 goto out_remove_sysfs;
3678
3679         return 0;
3680
3681  out_remove_sysfs:
3682         destroy_workqueue(priv->workqueue);
3683         priv->workqueue = NULL;
3684         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3685  out_free_irq:
3686         free_irq(priv->pci_dev->irq, priv);
3687         iwl_free_isr_ict(priv);
3688  out_disable_msi:
3689         pci_disable_msi(priv->pci_dev);
3690         iwl_uninit_drv(priv);
3691  out_free_eeprom:
3692         iwl_eeprom_free(priv);
3693  out_iounmap:
3694         pci_iounmap(pdev, priv->hw_base);
3695  out_pci_release_regions:
3696         pci_set_drvdata(pdev, NULL);
3697         pci_release_regions(pdev);
3698  out_pci_disable_device:
3699         pci_disable_device(pdev);
3700  out_ieee80211_free_hw:
3701         iwl_free_traffic_mem(priv);
3702         ieee80211_free_hw(priv->hw);
3703  out:
3704         return err;
3705 }
3706
3707 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3708 {
3709         struct iwl_priv *priv = pci_get_drvdata(pdev);
3710         unsigned long flags;
3711
3712         if (!priv)
3713                 return;
3714
3715         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3716
3717         iwl_dbgfs_unregister(priv);
3718         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3719
3720         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3721          * to be called and iwl_down since we are removing the device
3722          * we need to set STATUS_EXIT_PENDING bit.
3723          */
3724         set_bit(STATUS_EXIT_PENDING, &priv->status);
3725         if (priv->mac80211_registered) {
3726                 ieee80211_unregister_hw(priv->hw);
3727                 priv->mac80211_registered = 0;
3728         } else {
3729                 iwl_down(priv);
3730         }
3731
3732         /*
3733          * Make sure device is reset to low power before unloading driver.
3734          * This may be redundant with iwl_down(), but there are paths to
3735          * run iwl_down() without calling apm_ops.stop(), and there are
3736          * paths to avoid running iwl_down() at all before leaving driver.
3737          * This (inexpensive) call *makes sure* device is reset.
3738          */
3739         priv->cfg->ops->lib->apm_ops.stop(priv);
3740
3741         iwl_tt_exit(priv);
3742
3743         /* make sure we flush any pending irq or
3744          * tasklet for the driver
3745          */
3746         spin_lock_irqsave(&priv->lock, flags);
3747         iwl_disable_interrupts(priv);
3748         spin_unlock_irqrestore(&priv->lock, flags);
3749
3750         iwl_synchronize_irq(priv);
3751
3752         iwl_dealloc_ucode_pci(priv);
3753
3754         if (priv->rxq.bd)
3755                 iwl_rx_queue_free(priv, &priv->rxq);
3756         iwl_hw_txq_ctx_free(priv);
3757
3758         iwl_clear_stations_table(priv);
3759         iwl_eeprom_free(priv);
3760
3761
3762         /*netif_stop_queue(dev); */
3763         flush_workqueue(priv->workqueue);
3764
3765         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3766          * priv->workqueue... so we can't take down the workqueue
3767          * until now... */
3768         destroy_workqueue(priv->workqueue);
3769         priv->workqueue = NULL;
3770         iwl_free_traffic_mem(priv);
3771
3772         free_irq(priv->pci_dev->irq, priv);
3773         pci_disable_msi(priv->pci_dev);
3774         pci_iounmap(pdev, priv->hw_base);
3775         pci_release_regions(pdev);
3776         pci_disable_device(pdev);
3777         pci_set_drvdata(pdev, NULL);
3778
3779         iwl_uninit_drv(priv);
3780
3781         iwl_free_isr_ict(priv);
3782
3783         if (priv->ibss_beacon)
3784                 dev_kfree_skb(priv->ibss_beacon);
3785
3786         ieee80211_free_hw(priv->hw);
3787 }
3788
3789
3790 /*****************************************************************************
3791  *
3792  * driver and module entry point
3793  *
3794  *****************************************************************************/
3795
3796 /* Hardware specific file defines the PCI IDs table for that hardware module */
3797 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
3798 #ifdef CONFIG_IWL4965
3799         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3800         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3801 #endif /* CONFIG_IWL4965 */
3802 #ifdef CONFIG_IWL5000
3803 /* 5100 Series WiFi */
3804         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
3805         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
3806         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
3807         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
3808         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
3809         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
3810         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
3811         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
3812         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
3813         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
3814         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
3815         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
3816         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
3817         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
3818         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
3819         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
3820         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
3821         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
3822         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
3823         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
3824         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
3825         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
3826         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
3827         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
3828
3829 /* 5300 Series WiFi */
3830         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
3831         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
3832         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
3833         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
3834         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
3835         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
3836         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
3837         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
3838         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
3839         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
3840         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
3841         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
3842
3843 /* 5350 Series WiFi/WiMax */
3844         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
3845         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
3846         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
3847
3848 /* 5150 Series Wifi/WiMax */
3849         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
3850         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
3851         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
3852         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
3853         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
3854         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
3855
3856         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
3857         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
3858         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
3859         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
3860
3861 /* 6x00 Series */
3862         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3863         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3864         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3865         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3866         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3867         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3868         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3869         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3870         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3871         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3872
3873 /* 6x50 WiFi/WiMax Series */
3874         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3875         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3876         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3877         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3878         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3879         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3880
3881 /* 1000 Series WiFi */
3882         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3883         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3884         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3885         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3886         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3887         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3888         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
3889         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
3890         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
3891         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
3892         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
3893         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
3894 #endif /* CONFIG_IWL5000 */
3895
3896         {0}
3897 };
3898 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3899
3900 static struct pci_driver iwl_driver = {
3901         .name = DRV_NAME,
3902         .id_table = iwl_hw_card_ids,
3903         .probe = iwl_pci_probe,
3904         .remove = __devexit_p(iwl_pci_remove),
3905 #ifdef CONFIG_PM
3906         .suspend = iwl_pci_suspend,
3907         .resume = iwl_pci_resume,
3908 #endif
3909 };
3910
3911 static int __init iwl_init(void)
3912 {
3913
3914         int ret;
3915         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3916         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3917
3918         ret = iwlagn_rate_control_register();
3919         if (ret) {
3920                 printk(KERN_ERR DRV_NAME
3921                        "Unable to register rate control algorithm: %d\n", ret);
3922                 return ret;
3923         }
3924
3925         ret = pci_register_driver(&iwl_driver);
3926         if (ret) {
3927                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3928                 goto error_register;
3929         }
3930
3931         return ret;
3932
3933 error_register:
3934         iwlagn_rate_control_unregister();
3935         return ret;
3936 }
3937
3938 static void __exit iwl_exit(void)
3939 {
3940         pci_unregister_driver(&iwl_driver);
3941         iwlagn_rate_control_unregister();
3942 }
3943
3944 module_exit(iwl_exit);
3945 module_init(iwl_init);
3946
3947 #ifdef CONFIG_IWLWIFI_DEBUG
3948 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
3949 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
3950 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3951 MODULE_PARM_DESC(debug, "debug output mask");
3952 #endif
3953