git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #define DRV_NAME        "iwlagn"
  48
  49 #include "iwl-eeprom.h"
  50 #include "iwl-dev.h"
  51 #include "iwl-core.h"
  52 #include "iwl-io.h"
  53 #include "iwl-helpers.h"
  54 #include "iwl-sta.h"
  55 #include "iwl-calib.h"
  56
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /*
  65  * module name, copyright, version, etc.
  66  */
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97 /**
  98  * iwl_commit_rxon - commit staging_rxon to hardware
  99  *
 100  * The RXON command in staging_rxon is committed to the hardware and
 101  * the active_rxon structure is updated with the new data.  This
 102  * function correctly transitions out of the RXON_ASSOC_MSK state if
 103  * a HW tune is required based on the RXON structure changes.
 104  */
 105 int iwl_commit_rxon(struct iwl_priv *priv)
 106 {
 107         /* cast away the const for active_rxon in this function */
 108         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 109         int ret;
 110         bool new_assoc =
 111                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 112
 113         if (!iwl_is_alive(priv))
 114                 return -EBUSY;
 115
 116         /* always get timestamp with Rx frame */
 117         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 118         /* allow CTS-to-self if possible. this is relevant only for
 119          * 5000, but will not damage 4965 */
 120         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 121
 122         ret = iwl_check_rxon_cmd(priv);
 123         if (ret) {
 124                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 125                 return -EINVAL;
 126         }
 127
 128         /* If we don't need to send a full RXON, we can use
 129          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 130          * and other flags for the current radio configuration. */
 131         if (!iwl_full_rxon_required(priv)) {
 132                 ret = iwl_send_rxon_assoc(priv);
 133                 if (ret) {
 134                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 135                         return ret;
 136                 }
 137
 138                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 139                 return 0;
 140         }
 141
 142         /* station table will be cleared */
 143         priv->assoc_station_added = 0;
 144
 145         /* If we are currently associated and the new config requires
 146          * an RXON_ASSOC and the new config wants the associated mask enabled,
 147          * we must clear the associated from the active configuration
 148          * before we apply the new config */
 149         if (iwl_is_associated(priv) && new_assoc) {
 150                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 151                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 152
 153                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 154                                       sizeof(struct iwl_rxon_cmd),
 155                                       &priv->active_rxon);
 156
 157                 /* If the mask clearing failed then we set
 158                  * active_rxon back to what it was previously */
 159                 if (ret) {
 160                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 161                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 162                         return ret;
 163                 }
 164         }
 165
 166         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 167                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 168                        "* channel = %d\n"
 169                        "* bssid = %pM\n",
 170                        (new_assoc ? "" : "out"),
 171                        le16_to_cpu(priv->staging_rxon.channel),
 172                        priv->staging_rxon.bssid_addr);
 173
 174         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 175
 176         /* Apply the new configuration
 177          * RXON unassoc clears the station table in uCode, send it before
 178          * we add the bcast station. If assoc bit is set, we will send RXON
 179          * after having added the bcast and bssid station.
 180          */
 181         if (!new_assoc) {
 182                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 183                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 184                 if (ret) {
 185                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 186                         return ret;
 187                 }
 188                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 189         }
 190
 191         priv->cfg->ops->smgmt->clear_station_table(priv);
 192
 193         priv->start_calib = 0;
 194
 195         /* Add the broadcast address so we can send broadcast frames */
 196         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 197                                                 IWL_INVALID_STATION) {
 198                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 199                 return -EIO;
 200         }
 201
 202         /* If we have set the ASSOC_MSK and we are in BSS mode then
 203          * add the IWL_AP_ID to the station rate table */
 204         if (new_assoc) {
 205                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 206                         ret = iwl_rxon_add_station(priv,
 207                                            priv->active_rxon.bssid_addr, 1);
 208                         if (ret == IWL_INVALID_STATION) {
 209                                 IWL_ERR(priv,
 210                                         "Error adding AP address for TX.\n");
 211                                 return -EIO;
 212                         }
 213                         priv->assoc_station_added = 1;
 214                         if (priv->default_wep_key &&
 215                             iwl_send_static_wepkey_cmd(priv, 0))
 216                                 IWL_ERR(priv,
 217                                         "Could not send WEP static key.\n");
 218                 }
 219
 220                 /* Apply the new configuration
 221                  * RXON assoc doesn't clear the station table in uCode,
 222                  */
 223                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 224                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 225                 if (ret) {
 226                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 227                         return ret;
 228                 }
 229                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 230         }
 231
 232         iwl_init_sensitivity(priv);
 233
 234         /* If we issue a new RXON command which required a tune then we must
 235          * send a new TXPOWER command or we won't be able to Tx any frames */
 236         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 237         if (ret) {
 238                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 239                 return ret;
 240         }
 241
 242         return 0;
 243 }
 244
 245 void iwl_update_chain_flags(struct iwl_priv *priv)
 246 {
 247
 248         if (priv->cfg->ops->hcmd->set_rxon_chain)
 249                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 250         iwlcore_commit_rxon(priv);
 251 }
 252
 253 static void iwl_clear_free_frames(struct iwl_priv *priv)
 254 {
 255         struct list_head *element;
 256
 257         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 258                        priv->frames_count);
 259
 260         while (!list_empty(&priv->free_frames)) {
 261                 element = priv->free_frames.next;
 262                 list_del(element);
 263                 kfree(list_entry(element, struct iwl_frame, list));
 264                 priv->frames_count--;
 265         }
 266
 267         if (priv->frames_count) {
 268                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 269                             priv->frames_count);
 270                 priv->frames_count = 0;
 271         }
 272 }
 273
 274 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 275 {
 276         struct iwl_frame *frame;
 277         struct list_head *element;
 278         if (list_empty(&priv->free_frames)) {
 279                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 280                 if (!frame) {
 281                         IWL_ERR(priv, "Could not allocate frame!\n");
 282                         return NULL;
 283                 }
 284
 285                 priv->frames_count++;
 286                 return frame;
 287         }
 288
 289         element = priv->free_frames.next;
 290         list_del(element);
 291         return list_entry(element, struct iwl_frame, list);
 292 }
 293
 294 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 295 {
 296         memset(frame, 0, sizeof(*frame));
 297         list_add(&frame->list, &priv->free_frames);
 298 }
 299
 300 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 301                                           struct ieee80211_hdr *hdr,
 302                                           int left)
 303 {
 304         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 305             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 306              (priv->iw_mode != NL80211_IFTYPE_AP)))
 307                 return 0;
 308
 309         if (priv->ibss_beacon->len > left)
 310                 return 0;
 311
 312         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 313
 314         return priv->ibss_beacon->len;
 315 }
 316
 317 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 318                                        struct iwl_frame *frame, u8 rate)
 319 {
 320         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 321         unsigned int frame_size;
 322
 323         tx_beacon_cmd = &frame->u.beacon;
 324         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 325
 326         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 327         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 328
 329         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 330                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 331
 332         BUG_ON(frame_size > MAX_MPDU_SIZE);
 333         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 334
 335         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 336                 tx_beacon_cmd->tx.rate_n_flags =
 337                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 338         else
 339                 tx_beacon_cmd->tx.rate_n_flags =
 340                         iwl_hw_set_rate_n_flags(rate, 0);
 341
 342         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 343                                      TX_CMD_FLG_TSF_MSK |
 344                                      TX_CMD_FLG_STA_RATE_MSK;
 345
 346         return sizeof(*tx_beacon_cmd) + frame_size;
 347 }
 348 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 349 {
 350         struct iwl_frame *frame;
 351         unsigned int frame_size;
 352         int rc;
 353         u8 rate;
 354
 355         frame = iwl_get_free_frame(priv);
 356
 357         if (!frame) {
 358                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 359                           "command.\n");
 360                 return -ENOMEM;
 361         }
 362
 363         rate = iwl_rate_get_lowest_plcp(priv);
 364
 365         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 366
 367         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 368                               &frame->u.cmd[0]);
 369
 370         iwl_free_frame(priv, frame);
 371
 372         return rc;
 373 }
 374
 375 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 376 {
 377         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 378
 379         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 380         if (sizeof(dma_addr_t) > sizeof(u32))
 381                 addr |=
 382                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 383
 384         return addr;
 385 }
 386
 387 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 388 {
 389         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 390
 391         return le16_to_cpu(tb->hi_n_len) >> 4;
 392 }
 393
 394 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 395                                   dma_addr_t addr, u16 len)
 396 {
 397         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 398         u16 hi_n_len = len << 4;
 399
 400         put_unaligned_le32(addr, &tb->lo);
 401         if (sizeof(dma_addr_t) > sizeof(u32))
 402                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 403
 404         tb->hi_n_len = cpu_to_le16(hi_n_len);
 405
 406         tfd->num_tbs = idx + 1;
 407 }
 408
 409 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 410 {
 411         return tfd->num_tbs & 0x1f;
 412 }
 413
 414 /**
 415  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 416  * @priv - driver private data
 417  * @txq - tx queue
 418  *
 419  * Does NOT advance any TFD circular buffer read/write indexes
 420  * Does NOT free the TFD itself (which is within circular buffer)
 421  */
 422 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 423 {
 424         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 425         struct iwl_tfd *tfd;
 426         struct pci_dev *dev = priv->pci_dev;
 427         int index = txq->q.read_ptr;
 428         int i;
 429         int num_tbs;
 430
 431         tfd = &tfd_tmp[index];
 432
 433         /* Sanity check on number of chunks */
 434         num_tbs = iwl_tfd_get_num_tbs(tfd);
 435
 436         if (num_tbs >= IWL_NUM_OF_TBS) {
 437                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 438                 /* @todo issue fatal error, it is quite serious situation */
 439                 return;
 440         }
 441
 442         /* Unmap tx_cmd */
 443         if (num_tbs)
 444                 pci_unmap_single(dev,
 445                                 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
 446                                 pci_unmap_len(&txq->cmd[index]->meta, len),
 447                                 PCI_DMA_BIDIRECTIONAL);
 448
 449         /* Unmap chunks, if any. */
 450         for (i = 1; i < num_tbs; i++) {
 451                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 452                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 453
 454                 if (txq->txb) {
 455                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 456                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 457                 }
 458         }
 459 }
 460
 461 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 462                                  struct iwl_tx_queue *txq,
 463                                  dma_addr_t addr, u16 len,
 464                                  u8 reset, u8 pad)
 465 {
 466         struct iwl_queue *q;
 467         struct iwl_tfd *tfd, *tfd_tmp;
 468         u32 num_tbs;
 469
 470         q = &txq->q;
 471         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 472         tfd = &tfd_tmp[q->write_ptr];
 473
 474         if (reset)
 475                 memset(tfd, 0, sizeof(*tfd));
 476
 477         num_tbs = iwl_tfd_get_num_tbs(tfd);
 478
 479         /* Each TFD can point to a maximum 20 Tx buffers */
 480         if (num_tbs >= IWL_NUM_OF_TBS) {
 481                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 482                           IWL_NUM_OF_TBS);
 483                 return -EINVAL;
 484         }
 485
 486         BUG_ON(addr & ~DMA_BIT_MASK(36));
 487         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 488                 IWL_ERR(priv, "Unaligned address = %llx\n",
 489                           (unsigned long long)addr);
 490
 491         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 492
 493         return 0;
 494 }
 495
 496 /*
 497  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 498  * given Tx queue, and enable the DMA channel used for that queue.
 499  *
 500  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 501  * channels supported in hardware.
 502  */
 503 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 504                          struct iwl_tx_queue *txq)
 505 {
 506         int ret;
 507         unsigned long flags;
 508         int txq_id = txq->q.id;
 509
 510         spin_lock_irqsave(&priv->lock, flags);
 511         ret = iwl_grab_nic_access(priv);
 512         if (ret) {
 513                 spin_unlock_irqrestore(&priv->lock, flags);
 514                 return ret;
 515         }
 516
 517         /* Circular buffer (TFD queue in DRAM) physical base address */
 518         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 519                              txq->q.dma_addr >> 8);
 520
 521         iwl_release_nic_access(priv);
 522         spin_unlock_irqrestore(&priv->lock, flags);
 523
 524         return 0;
 525 }
 526
 527
 528 /******************************************************************************
 529  *
 530  * Misc. internal state and helper functions
 531  *
 532  ******************************************************************************/
 533
 534 #define MAX_UCODE_BEACON_INTERVAL       4096
 535
 536 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 537 {
 538         u16 new_val = 0;
 539         u16 beacon_factor = 0;
 540
 541         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 542                                         / MAX_UCODE_BEACON_INTERVAL;
 543         new_val = beacon_val / beacon_factor;
 544
 545         if (!new_val)
 546                 new_val = MAX_UCODE_BEACON_INTERVAL;
 547
 548         return new_val;
 549 }
 550
 551 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 552 {
 553         u64 tsf;
 554         s32 interval_tm, rem;
 555         unsigned long flags;
 556         struct ieee80211_conf *conf = NULL;
 557         u16 beacon_int = 0;
 558
 559         conf = ieee80211_get_hw_conf(priv->hw);
 560
 561         spin_lock_irqsave(&priv->lock, flags);
 562         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 563         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 564
 565         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 566                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 567                 priv->rxon_timing.atim_window = 0;
 568         } else {
 569                 beacon_int = iwl_adjust_beacon_interval(
 570                         priv->vif->bss_conf.beacon_int);
 571
 572                 /* TODO: we need to get atim_window from upper stack
 573                  * for now we set to 0 */
 574                 priv->rxon_timing.atim_window = 0;
 575         }
 576
 577         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 578
 579         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 580         interval_tm = beacon_int * 1024;
 581         rem = do_div(tsf, interval_tm);
 582         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 583
 584         spin_unlock_irqrestore(&priv->lock, flags);
 585         IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n",
 586                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 587                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 588                         le16_to_cpu(priv->rxon_timing.atim_window));
 589 }
 590
 591 /******************************************************************************
 592  *
 593  * Generic RX handler implementations
 594  *
 595  ******************************************************************************/
 596 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 597                                 struct iwl_rx_mem_buffer *rxb)
 598 {
 599         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 600         struct iwl_alive_resp *palive;
 601         struct delayed_work *pwork;
 602
 603         palive = &pkt->u.alive_frame;
 604
 605         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 606                        "0x%01X 0x%01X\n",
 607                        palive->is_valid, palive->ver_type,
 608                        palive->ver_subtype);
 609
 610         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 611                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 612                 memcpy(&priv->card_alive_init,
 613                        &pkt->u.alive_frame,
 614                        sizeof(struct iwl_init_alive_resp));
 615                 pwork = &priv->init_alive_start;
 616         } else {
 617                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 618                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 619                        sizeof(struct iwl_alive_resp));
 620                 pwork = &priv->alive_start;
 621         }
 622
 623         /* We delay the ALIVE response by 5ms to
 624          * give the HW RF Kill time to activate... */
 625         if (palive->is_valid == UCODE_VALID_OK)
 626                 queue_delayed_work(priv->workqueue, pwork,
 627                                    msecs_to_jiffies(5));
 628         else
 629                 IWL_WARN(priv, "uCode did not respond OK.\n");
 630 }
 631
 632 static void iwl_bg_beacon_update(struct work_struct *work)
 633 {
 634         struct iwl_priv *priv =
 635                 container_of(work, struct iwl_priv, beacon_update);
 636         struct sk_buff *beacon;
 637
 638         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 639         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 640
 641         if (!beacon) {
 642                 IWL_ERR(priv, "update beacon failed\n");
 643                 return;
 644         }
 645
 646         mutex_lock(&priv->mutex);
 647         /* new beacon skb is allocated every time; dispose previous.*/
 648         if (priv->ibss_beacon)
 649                 dev_kfree_skb(priv->ibss_beacon);
 650
 651         priv->ibss_beacon = beacon;
 652         mutex_unlock(&priv->mutex);
 653
 654         iwl_send_beacon_cmd(priv);
 655 }
 656
 657 /**
 658  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 659  *
 660  * This callback is provided in order to send a statistics request.
 661  *
 662  * This timer function is continually reset to execute within
 663  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 664  * was received.  We need to ensure we receive the statistics in order
 665  * to update the temperature used for calibrating the TXPOWER.
 666  */
 667 static void iwl_bg_statistics_periodic(unsigned long data)
 668 {
 669         struct iwl_priv *priv = (struct iwl_priv *)data;
 670
 671         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 672                 return;
 673
 674         /* dont send host command if rf-kill is on */
 675         if (!iwl_is_ready_rf(priv))
 676                 return;
 677
 678         iwl_send_statistics_request(priv, CMD_ASYNC);
 679 }
 680
 681 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 682                                 struct iwl_rx_mem_buffer *rxb)
 683 {
 684 #ifdef CONFIG_IWLWIFI_DEBUG
 685         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 686         struct iwl4965_beacon_notif *beacon =
 687                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 688         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 689
 690         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 691                 "tsf %d %d rate %d\n",
 692                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 693                 beacon->beacon_notify_hdr.failure_frame,
 694                 le32_to_cpu(beacon->ibss_mgr_status),
 695                 le32_to_cpu(beacon->high_tsf),
 696                 le32_to_cpu(beacon->low_tsf), rate);
 697 #endif
 698
 699         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 700             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 701                 queue_work(priv->workqueue, &priv->beacon_update);
 702 }
 703
 704 /* Handle notification from uCode that card's power state is changing
 705  * due to software, hardware, or critical temperature RFKILL */
 706 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 707                                     struct iwl_rx_mem_buffer *rxb)
 708 {
 709         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 710         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 711         unsigned long status = priv->status;
 712
 713         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
 714                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 715                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 716
 717         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 718                      RF_CARD_DISABLED)) {
 719
 720                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 721                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 722
 723                 if (!iwl_grab_nic_access(priv)) {
 724                         iwl_write_direct32(
 725                                 priv, HBUS_TARG_MBX_C,
 726                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 727
 728                         iwl_release_nic_access(priv);
 729                 }
 730
 731                 if (!(flags & RXON_CARD_DISABLED)) {
 732                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 733                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 734                         if (!iwl_grab_nic_access(priv)) {
 735                                 iwl_write_direct32(
 736                                         priv, HBUS_TARG_MBX_C,
 737                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 738
 739                                 iwl_release_nic_access(priv);
 740                         }
 741                 }
 742
 743                 if (flags & RF_CARD_DISABLED) {
 744                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 745                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 746                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
 747                         if (!iwl_grab_nic_access(priv))
 748                                 iwl_release_nic_access(priv);
 749                 }
 750         }
 751
 752         if (flags & HW_CARD_DISABLED)
 753                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 754         else
 755                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 756
 757
 758         if (flags & SW_CARD_DISABLED)
 759                 set_bit(STATUS_RF_KILL_SW, &priv->status);
 760         else
 761                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
 762
 763         if (!(flags & RXON_CARD_DISABLED))
 764                 iwl_scan_cancel(priv);
 765
 766         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 767              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
 768             (test_bit(STATUS_RF_KILL_SW, &status) !=
 769              test_bit(STATUS_RF_KILL_SW, &priv->status)))
 770                 queue_work(priv->workqueue, &priv->rf_kill);
 771         else
 772                 wake_up_interruptible(&priv->wait_command_queue);
 773 }
 774
 775 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 776 {
 777         int ret;
 778         unsigned long flags;
 779
 780         spin_lock_irqsave(&priv->lock, flags);
 781         ret = iwl_grab_nic_access(priv);
 782         if (ret)
 783                 goto err;
 784
 785         if (src == IWL_PWR_SRC_VAUX) {
 786                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
 787                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 788                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 789                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 790         } else {
 791                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 792                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 793                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 794         }
 795
 796         iwl_release_nic_access(priv);
 797 err:
 798         spin_unlock_irqrestore(&priv->lock, flags);
 799         return ret;
 800 }
 801
 802 /**
 803  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 804  *
 805  * Setup the RX handlers for each of the reply types sent from the uCode
 806  * to the host.
 807  *
 808  * This function chains into the hardware specific files for them to setup
 809  * any hardware specific handlers as well.
 810  */
 811 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 812 {
 813         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 814         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 815         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 816         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 817         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 818             iwl_rx_pm_debug_statistics_notif;
 819         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 820
 821         /*
 822          * The same handler is used for both the REPLY to a discrete
 823          * statistics request from the host as well as for the periodic
 824          * statistics notifications (after received beacons) from the uCode.
 825          */
 826         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
 827         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 828
 829         iwl_setup_spectrum_handlers(priv);
 830         iwl_setup_rx_scan_handlers(priv);
 831
 832         /* status change handler */
 833         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 834
 835         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 836             iwl_rx_missed_beacon_notif;
 837         /* Rx handlers */
 838         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
 839         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
 840         /* block ack */
 841         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
 842         /* Set up hardware specific Rx handlers */
 843         priv->cfg->ops->lib->rx_handler_setup(priv);
 844 }
 845
 846 /**
 847  * iwl_rx_handle - Main entry function for receiving responses from uCode
 848  *
 849  * Uses the priv->rx_handlers callback function array to invoke
 850  * the appropriate handlers, including command responses,
 851  * frame-received notifications, and other notifications.
 852  */
 853 void iwl_rx_handle(struct iwl_priv *priv)
 854 {
 855         struct iwl_rx_mem_buffer *rxb;
 856         struct iwl_rx_packet *pkt;
 857         struct iwl_rx_queue *rxq = &priv->rxq;
 858         u32 r, i;
 859         int reclaim;
 860         unsigned long flags;
 861         u8 fill_rx = 0;
 862         u32 count = 8;
 863
 864         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 865          * buffer that the driver may process (last buffer filled by ucode). */
 866         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 867         i = rxq->read;
 868
 869         /* Rx interrupt, but nothing sent from uCode */
 870         if (i == r)
 871                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
 872
 873         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
 874                 fill_rx = 1;
 875
 876         while (i != r) {
 877                 rxb = rxq->queue[i];
 878
 879                 /* If an RXB doesn't have a Rx queue slot associated with it,
 880                  * then a bug has been introduced in the queue refilling
 881                  * routines -- catch it here */
 882                 BUG_ON(rxb == NULL);
 883
 884                 rxq->queue[i] = NULL;
 885
 886                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
 887                                  priv->hw_params.rx_buf_size + 256,
 888                                  PCI_DMA_FROMDEVICE);
 889                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
 890
 891                 /* Reclaim a command buffer only if this packet is a response
 892                  *   to a (driver-originated) command.
 893                  * If the packet (e.g. Rx frame) originated from uCode,
 894                  *   there is no command buffer to reclaim.
 895                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 896                  *   but apparently a few don't get set; catch them here. */
 897                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
 898                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
 899                         (pkt->hdr.cmd != REPLY_RX) &&
 900                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
 901                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
 902                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
 903                         (pkt->hdr.cmd != REPLY_TX);
 904
 905                 /* Based on type of command response or notification,
 906                  *   handle those that need handling via function in
 907                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
 908                 if (priv->rx_handlers[pkt->hdr.cmd]) {
 909                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
 910                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
 911                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
 912                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
 913                 } else {
 914                         /* No handling needed */
 915                         IWL_DEBUG_RX(priv,
 916                                 "r %d i %d No handler needed for %s, 0x%02x\n",
 917                                 r, i, get_cmd_string(pkt->hdr.cmd),
 918                                 pkt->hdr.cmd);
 919                 }
 920
 921                 if (reclaim) {
 922                         /* Invoke any callbacks, transfer the skb to caller, and
 923                          * fire off the (possibly) blocking iwl_send_cmd()
 924                          * as we reclaim the driver command queue */
 925                         if (rxb && rxb->skb)
 926                                 iwl_tx_cmd_complete(priv, rxb);
 927                         else
 928                                 IWL_WARN(priv, "Claim null rxb?\n");
 929                 }
 930
 931                 /* For now we just don't re-use anything.  We can tweak this
 932                  * later to try and re-use notification packets and SKBs that
 933                  * fail to Rx correctly */
 934                 if (rxb->skb != NULL) {
 935                         priv->alloc_rxb_skb--;
 936                         dev_kfree_skb_any(rxb->skb);
 937                         rxb->skb = NULL;
 938                 }
 939
 940                 spin_lock_irqsave(&rxq->lock, flags);
 941                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
 942                 spin_unlock_irqrestore(&rxq->lock, flags);
 943                 i = (i + 1) & RX_QUEUE_MASK;
 944                 /* If there are a lot of unused frames,
 945                  * restock the Rx queue so ucode wont assert. */
 946                 if (fill_rx) {
 947                         count++;
 948                         if (count >= 8) {
 949                                 priv->rxq.read = i;
 950                                 iwl_rx_queue_restock(priv);
 951                                 count = 0;
 952                         }
 953                 }
 954         }
 955
 956         /* Backtrack one entry */
 957         priv->rxq.read = i;
 958         iwl_rx_queue_restock(priv);
 959 }
 960
 961 /* call this function to flush any scheduled tasklet */
 962 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
 963 {
 964         /* wait to make sure we flush pending tasklet*/
 965         synchronize_irq(priv->pci_dev->irq);
 966         tasklet_kill(&priv->irq_tasklet);
 967 }
 968
 969 static void iwl_irq_tasklet(struct iwl_priv *priv)
 970 {
 971         u32 inta, handled = 0;
 972         u32 inta_fh;
 973         unsigned long flags;
 974 #ifdef CONFIG_IWLWIFI_DEBUG
 975         u32 inta_mask;
 976 #endif
 977
 978         spin_lock_irqsave(&priv->lock, flags);
 979
 980         /* Ack/clear/reset pending uCode interrupts.
 981          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
 982          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
 983         inta = iwl_read32(priv, CSR_INT);
 984         iwl_write32(priv, CSR_INT, inta);
 985
 986         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
 987          * Any new interrupts that happen after this, either while we're
 988          * in this tasklet, or later, will show up in next ISR/tasklet. */
 989         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
 990         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
 991
 992 #ifdef CONFIG_IWLWIFI_DEBUG
 993         if (priv->debug_level & IWL_DL_ISR) {
 994                 /* just for debug */
 995                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
 996                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
 997                               inta, inta_mask, inta_fh);
 998         }
 999 #endif
1000
1001         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1002          * atomic, make sure that inta covers all the interrupts that
1003          * we've discovered, even if FH interrupt came in just after
1004          * reading CSR_INT. */
1005         if (inta_fh & CSR49_FH_INT_RX_MASK)
1006                 inta |= CSR_INT_BIT_FH_RX;
1007         if (inta_fh & CSR49_FH_INT_TX_MASK)
1008                 inta |= CSR_INT_BIT_FH_TX;
1009
1010         /* Now service all interrupt bits discovered above. */
1011         if (inta & CSR_INT_BIT_HW_ERR) {
1012                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
1013
1014                 /* Tell the device to stop sending interrupts */
1015                 iwl_disable_interrupts(priv);
1016
1017                 priv->isr_stats.hw++;
1018                 iwl_irq_handle_error(priv);
1019
1020                 handled |= CSR_INT_BIT_HW_ERR;
1021
1022                 spin_unlock_irqrestore(&priv->lock, flags);
1023
1024                 return;
1025         }
1026
1027 #ifdef CONFIG_IWLWIFI_DEBUG
1028         if (priv->debug_level & (IWL_DL_ISR)) {
1029                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1030                 if (inta & CSR_INT_BIT_SCD) {
1031                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1032                                       "the frame/frames.\n");
1033                         priv->isr_stats.sch++;
1034                 }
1035
1036                 /* Alive notification via Rx interrupt will do the real work */
1037                 if (inta & CSR_INT_BIT_ALIVE) {
1038                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1039                         priv->isr_stats.alive++;
1040                 }
1041         }
1042 #endif
1043         /* Safely ignore these bits for debug checks below */
1044         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1045
1046         /* HW RF KILL switch toggled */
1047         if (inta & CSR_INT_BIT_RF_KILL) {
1048                 int hw_rf_kill = 0;
1049                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1050                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1051                         hw_rf_kill = 1;
1052
1053                 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1054                                 hw_rf_kill ? "disable radio" : "enable radio");
1055
1056                 priv->isr_stats.rfkill++;
1057
1058                 /* driver only loads ucode once setting the interface up.
1059                  * the driver allows loading the ucode even if the radio
1060                  * is killed. Hence update the killswitch state here. The
1061                  * rfkill handler will care about restarting if needed.
1062                  */
1063                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1064                         if (hw_rf_kill)
1065                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1066                         else
1067                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1068                         queue_work(priv->workqueue, &priv->rf_kill);
1069                 }
1070
1071                 handled |= CSR_INT_BIT_RF_KILL;
1072         }
1073
1074         /* Chip got too hot and stopped itself */
1075         if (inta & CSR_INT_BIT_CT_KILL) {
1076                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1077                 priv->isr_stats.ctkill++;
1078                 handled |= CSR_INT_BIT_CT_KILL;
1079         }
1080
1081         /* Error detected by uCode */
1082         if (inta & CSR_INT_BIT_SW_ERR) {
1083                 IWL_ERR(priv, "Microcode SW error detected. "
1084                         " Restarting 0x%X.\n", inta);
1085                 priv->isr_stats.sw++;
1086                 priv->isr_stats.sw_err = inta;
1087                 iwl_irq_handle_error(priv);
1088                 handled |= CSR_INT_BIT_SW_ERR;
1089         }
1090
1091         /* uCode wakes up after power-down sleep */
1092         if (inta & CSR_INT_BIT_WAKEUP) {
1093                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1094                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1095                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1096                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1097                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1098                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1099                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1100                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1101
1102                 priv->isr_stats.wakeup++;
1103
1104                 handled |= CSR_INT_BIT_WAKEUP;
1105         }
1106
1107         /* All uCode command responses, including Tx command responses,
1108          * Rx "responses" (frame-received notification), and other
1109          * notifications from uCode come through here*/
1110         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1111                 iwl_rx_handle(priv);
1112                 priv->isr_stats.rx++;
1113                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1114         }
1115
1116         if (inta & CSR_INT_BIT_FH_TX) {
1117                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1118                 priv->isr_stats.tx++;
1119                 handled |= CSR_INT_BIT_FH_TX;
1120                 /* FH finished to write, send event */
1121                 priv->ucode_write_complete = 1;
1122                 wake_up_interruptible(&priv->wait_command_queue);
1123         }
1124
1125         if (inta & ~handled) {
1126                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1127                 priv->isr_stats.unhandled++;
1128         }
1129
1130         if (inta & ~CSR_INI_SET_MASK) {
1131                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1132                          inta & ~CSR_INI_SET_MASK);
1133                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1134         }
1135
1136         /* Re-enable all interrupts */
1137         /* only Re-enable if diabled by irq */
1138         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1139                 iwl_enable_interrupts(priv);
1140
1141 #ifdef CONFIG_IWLWIFI_DEBUG
1142         if (priv->debug_level & (IWL_DL_ISR)) {
1143                 inta = iwl_read32(priv, CSR_INT);
1144                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1145                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1146                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1147                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1148         }
1149 #endif
1150         spin_unlock_irqrestore(&priv->lock, flags);
1151 }
1152
1153
1154 /******************************************************************************
1155  *
1156  * uCode download functions
1157  *
1158  ******************************************************************************/
1159
1160 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1161 {
1162         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1163         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1164         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1165         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1166         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1167         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1168 }
1169
1170 static void iwl_nic_start(struct iwl_priv *priv)
1171 {
1172         /* Remove all resets to allow NIC to operate */
1173         iwl_write32(priv, CSR_RESET, 0);
1174 }
1175
1176
1177 /**
1178  * iwl_read_ucode - Read uCode images from disk file.
1179  *
1180  * Copy into buffers for card to fetch via bus-mastering
1181  */
1182 static int iwl_read_ucode(struct iwl_priv *priv)
1183 {
1184         struct iwl_ucode *ucode;
1185         int ret = -EINVAL, index;
1186         const struct firmware *ucode_raw;
1187         const char *name_pre = priv->cfg->fw_name_pre;
1188         const unsigned int api_max = priv->cfg->ucode_api_max;
1189         const unsigned int api_min = priv->cfg->ucode_api_min;
1190         char buf[25];
1191         u8 *src;
1192         size_t len;
1193         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1194
1195         /* Ask kernel firmware_class module to get the boot firmware off disk.
1196          * request_firmware() is synchronous, file is in memory on return. */
1197         for (index = api_max; index >= api_min; index--) {
1198                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1199                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1200                 if (ret < 0) {
1201                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
1202                                   buf, ret);
1203                         if (ret == -ENOENT)
1204                                 continue;
1205                         else
1206                                 goto error;
1207                 } else {
1208                         if (index < api_max)
1209                                 IWL_ERR(priv, "Loaded firmware %s, "
1210                                         "which is deprecated. "
1211                                         "Please use API v%u instead.\n",
1212                                           buf, api_max);
1213
1214                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1215                                        buf, ucode_raw->size);
1216                         break;
1217                 }
1218         }
1219
1220         if (ret < 0)
1221                 goto error;
1222
1223         /* Make sure that we got at least our header! */
1224         if (ucode_raw->size < sizeof(*ucode)) {
1225                 IWL_ERR(priv, "File size way too small!\n");
1226                 ret = -EINVAL;
1227                 goto err_release;
1228         }
1229
1230         /* Data from ucode file:  header followed by uCode images */
1231         ucode = (void *)ucode_raw->data;
1232
1233         priv->ucode_ver = le32_to_cpu(ucode->ver);
1234         api_ver = IWL_UCODE_API(priv->ucode_ver);
1235         inst_size = le32_to_cpu(ucode->inst_size);
1236         data_size = le32_to_cpu(ucode->data_size);
1237         init_size = le32_to_cpu(ucode->init_size);
1238         init_data_size = le32_to_cpu(ucode->init_data_size);
1239         boot_size = le32_to_cpu(ucode->boot_size);
1240
1241         /* api_ver should match the api version forming part of the
1242          * firmware filename ... but we don't check for that and only rely
1243          * on the API version read from firmware header from here on forward */
1244
1245         if (api_ver < api_min || api_ver > api_max) {
1246                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1247                           "Driver supports v%u, firmware is v%u.\n",
1248                           api_max, api_ver);
1249                 priv->ucode_ver = 0;
1250                 ret = -EINVAL;
1251                 goto err_release;
1252         }
1253         if (api_ver != api_max)
1254                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1255                           "got v%u. New firmware can be obtained "
1256                           "from http://www.intellinuxwireless.org.\n",
1257                           api_max, api_ver);
1258
1259         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1260                IWL_UCODE_MAJOR(priv->ucode_ver),
1261                IWL_UCODE_MINOR(priv->ucode_ver),
1262                IWL_UCODE_API(priv->ucode_ver),
1263                IWL_UCODE_SERIAL(priv->ucode_ver));
1264
1265         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1266                        priv->ucode_ver);
1267         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1268                        inst_size);
1269         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1270                        data_size);
1271         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1272                        init_size);
1273         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1274                        init_data_size);
1275         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1276                        boot_size);
1277
1278         /* Verify size of file vs. image size info in file's header */
1279         if (ucode_raw->size < sizeof(*ucode) +
1280                 inst_size + data_size + init_size +
1281                 init_data_size + boot_size) {
1282
1283                 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1284                                (int)ucode_raw->size);
1285                 ret = -EINVAL;
1286                 goto err_release;
1287         }
1288
1289         /* Verify that uCode images will fit in card's SRAM */
1290         if (inst_size > priv->hw_params.max_inst_size) {
1291                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1292                                inst_size);
1293                 ret = -EINVAL;
1294                 goto err_release;
1295         }
1296
1297         if (data_size > priv->hw_params.max_data_size) {
1298                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1299                                 data_size);
1300                 ret = -EINVAL;
1301                 goto err_release;
1302         }
1303         if (init_size > priv->hw_params.max_inst_size) {
1304                 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1305                         init_size);
1306                 ret = -EINVAL;
1307                 goto err_release;
1308         }
1309         if (init_data_size > priv->hw_params.max_data_size) {
1310                 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1311                       init_data_size);
1312                 ret = -EINVAL;
1313                 goto err_release;
1314         }
1315         if (boot_size > priv->hw_params.max_bsm_size) {
1316                 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1317                         boot_size);
1318                 ret = -EINVAL;
1319                 goto err_release;
1320         }
1321
1322         /* Allocate ucode buffers for card's bus-master loading ... */
1323
1324         /* Runtime instructions and 2 copies of data:
1325          * 1) unmodified from disk
1326          * 2) backup cache for save/restore during power-downs */
1327         priv->ucode_code.len = inst_size;
1328         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1329
1330         priv->ucode_data.len = data_size;
1331         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1332
1333         priv->ucode_data_backup.len = data_size;
1334         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1335
1336         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1337             !priv->ucode_data_backup.v_addr)
1338                 goto err_pci_alloc;
1339
1340         /* Initialization instructions and data */
1341         if (init_size && init_data_size) {
1342                 priv->ucode_init.len = init_size;
1343                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1344
1345                 priv->ucode_init_data.len = init_data_size;
1346                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1347
1348                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1349                         goto err_pci_alloc;
1350         }
1351
1352         /* Bootstrap (instructions only, no data) */
1353         if (boot_size) {
1354                 priv->ucode_boot.len = boot_size;
1355                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1356
1357                 if (!priv->ucode_boot.v_addr)
1358                         goto err_pci_alloc;
1359         }
1360
1361         /* Copy images into buffers for card's bus-master reads ... */
1362
1363         /* Runtime instructions (first block of data in file) */
1364         src = &ucode->data[0];
1365         len = priv->ucode_code.len;
1366         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1367         memcpy(priv->ucode_code.v_addr, src, len);
1368         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1369                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1370
1371         /* Runtime data (2nd block)
1372          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1373         src = &ucode->data[inst_size];
1374         len = priv->ucode_data.len;
1375         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1376         memcpy(priv->ucode_data.v_addr, src, len);
1377         memcpy(priv->ucode_data_backup.v_addr, src, len);
1378
1379         /* Initialization instructions (3rd block) */
1380         if (init_size) {
1381                 src = &ucode->data[inst_size + data_size];
1382                 len = priv->ucode_init.len;
1383                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1384                                 len);
1385                 memcpy(priv->ucode_init.v_addr, src, len);
1386         }
1387
1388         /* Initialization data (4th block) */
1389         if (init_data_size) {
1390                 src = &ucode->data[inst_size + data_size + init_size];
1391                 len = priv->ucode_init_data.len;
1392                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1393                                len);
1394                 memcpy(priv->ucode_init_data.v_addr, src, len);
1395         }
1396
1397         /* Bootstrap instructions (5th block) */
1398         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1399         len = priv->ucode_boot.len;
1400         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1401         memcpy(priv->ucode_boot.v_addr, src, len);
1402
1403         /* We have our copies now, allow OS release its copies */
1404         release_firmware(ucode_raw);
1405         return 0;
1406
1407  err_pci_alloc:
1408         IWL_ERR(priv, "failed to allocate pci memory\n");
1409         ret = -ENOMEM;
1410         iwl_dealloc_ucode_pci(priv);
1411
1412  err_release:
1413         release_firmware(ucode_raw);
1414
1415  error:
1416         return ret;
1417 }
1418
1419 /**
1420  * iwl_alive_start - called after REPLY_ALIVE notification received
1421  *                   from protocol/runtime uCode (initialization uCode's
1422  *                   Alive gets handled by iwl_init_alive_start()).
1423  */
1424 static void iwl_alive_start(struct iwl_priv *priv)
1425 {
1426         int ret = 0;
1427
1428         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1429
1430         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1431                 /* We had an error bringing up the hardware, so take it
1432                  * all the way back down so we can try again */
1433                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1434                 goto restart;
1435         }
1436
1437         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1438          * This is a paranoid check, because we would not have gotten the
1439          * "runtime" alive if code weren't properly loaded.  */
1440         if (iwl_verify_ucode(priv)) {
1441                 /* Runtime instruction load was bad;
1442                  * take it all the way back down so we can try again */
1443                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1444                 goto restart;
1445         }
1446
1447         priv->cfg->ops->smgmt->clear_station_table(priv);
1448         ret = priv->cfg->ops->lib->alive_notify(priv);
1449         if (ret) {
1450                 IWL_WARN(priv,
1451                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
1452                 goto restart;
1453         }
1454
1455         /* After the ALIVE response, we can send host commands to the uCode */
1456         set_bit(STATUS_ALIVE, &priv->status);
1457
1458         if (iwl_is_rfkill(priv))
1459                 return;
1460
1461         ieee80211_wake_queues(priv->hw);
1462
1463         priv->active_rate = priv->rates_mask;
1464         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1465
1466         if (iwl_is_associated(priv)) {
1467                 struct iwl_rxon_cmd *active_rxon =
1468                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1469                 /* apply any changes in staging */
1470                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1471                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1472         } else {
1473                 /* Initialize our rx_config data */
1474                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1475
1476                 if (priv->cfg->ops->hcmd->set_rxon_chain)
1477                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
1478
1479                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1480         }
1481
1482         /* Configure Bluetooth device coexistence support */
1483         iwl_send_bt_config(priv);
1484
1485         iwl_reset_run_time_calib(priv);
1486
1487         /* Configure the adapter for unassociated operation */
1488         iwlcore_commit_rxon(priv);
1489
1490         /* At this point, the NIC is initialized and operational */
1491         iwl_rf_kill_ct_config(priv);
1492
1493         iwl_leds_register(priv);
1494
1495         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1496         set_bit(STATUS_READY, &priv->status);
1497         wake_up_interruptible(&priv->wait_command_queue);
1498
1499         iwl_power_update_mode(priv, 1);
1500
1501         /* reassociate for ADHOC mode */
1502         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1503                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1504                                                                 priv->vif);
1505                 if (beacon)
1506                         iwl_mac_beacon_update(priv->hw, beacon);
1507         }
1508
1509
1510         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1511                 iwl_set_mode(priv, priv->iw_mode);
1512
1513         return;
1514
1515  restart:
1516         queue_work(priv->workqueue, &priv->restart);
1517 }
1518
1519 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1520
1521 static void __iwl_down(struct iwl_priv *priv)
1522 {
1523         unsigned long flags;
1524         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1525
1526         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1527
1528         if (!exit_pending)
1529                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1530
1531         iwl_leds_unregister(priv);
1532
1533         priv->cfg->ops->smgmt->clear_station_table(priv);
1534
1535         /* Unblock any waiting calls */
1536         wake_up_interruptible_all(&priv->wait_command_queue);
1537
1538         /* Wipe out the EXIT_PENDING status bit if we are not actually
1539          * exiting the module */
1540         if (!exit_pending)
1541                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1542
1543         /* stop and reset the on-board processor */
1544         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1545
1546         /* tell the device to stop sending interrupts */
1547         spin_lock_irqsave(&priv->lock, flags);
1548         iwl_disable_interrupts(priv);
1549         spin_unlock_irqrestore(&priv->lock, flags);
1550         iwl_synchronize_irq(priv);
1551
1552         if (priv->mac80211_registered)
1553                 ieee80211_stop_queues(priv->hw);
1554
1555         /* If we have not previously called iwl_init() then
1556          * clear all bits but the RF Kill bits and return */
1557         if (!iwl_is_init(priv)) {
1558                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1559                                         STATUS_RF_KILL_HW |
1560                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1561                                         STATUS_RF_KILL_SW |
1562                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1563                                         STATUS_GEO_CONFIGURED |
1564                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1565                                         STATUS_EXIT_PENDING;
1566                 goto exit;
1567         }
1568
1569         /* ...otherwise clear out all the status bits but the RF Kill
1570          * bits and continue taking the NIC down. */
1571         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1572                                 STATUS_RF_KILL_HW |
1573                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1574                                 STATUS_RF_KILL_SW |
1575                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1576                                 STATUS_GEO_CONFIGURED |
1577                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1578                                 STATUS_FW_ERROR |
1579                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1580                                 STATUS_EXIT_PENDING;
1581
1582         spin_lock_irqsave(&priv->lock, flags);
1583         iwl_clear_bit(priv, CSR_GP_CNTRL,
1584                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1585         spin_unlock_irqrestore(&priv->lock, flags);
1586
1587         iwl_txq_ctx_stop(priv);
1588         iwl_rxq_stop(priv);
1589
1590         spin_lock_irqsave(&priv->lock, flags);
1591         if (!iwl_grab_nic_access(priv)) {
1592                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1593                                          APMG_CLK_VAL_DMA_CLK_RQT);
1594                 iwl_release_nic_access(priv);
1595         }
1596         spin_unlock_irqrestore(&priv->lock, flags);
1597
1598         udelay(5);
1599
1600         /* FIXME: apm_ops.suspend(priv) */
1601         if (exit_pending)
1602                 priv->cfg->ops->lib->apm_ops.stop(priv);
1603         else
1604                 priv->cfg->ops->lib->apm_ops.reset(priv);
1605  exit:
1606         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1607
1608         if (priv->ibss_beacon)
1609                 dev_kfree_skb(priv->ibss_beacon);
1610         priv->ibss_beacon = NULL;
1611
1612         /* clear out any free frames */
1613         iwl_clear_free_frames(priv);
1614 }
1615
1616 static void iwl_down(struct iwl_priv *priv)
1617 {
1618         mutex_lock(&priv->mutex);
1619         __iwl_down(priv);
1620         mutex_unlock(&priv->mutex);
1621
1622         iwl_cancel_deferred_work(priv);
1623 }
1624
1625 #define MAX_HW_RESTARTS 5
1626
1627 static int __iwl_up(struct iwl_priv *priv)
1628 {
1629         int i;
1630         int ret;
1631
1632         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1633                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1634                 return -EIO;
1635         }
1636
1637         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1638                 IWL_ERR(priv, "ucode not available for device bringup\n");
1639                 return -EIO;
1640         }
1641
1642         /* If platform's RF_KILL switch is NOT set to KILL */
1643         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1644                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1645         else
1646                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1647
1648         if (iwl_is_rfkill(priv)) {
1649                 iwl_enable_interrupts(priv);
1650                 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1651                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1652                 return 0;
1653         }
1654
1655         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1656
1657         ret = iwl_hw_nic_init(priv);
1658         if (ret) {
1659                 IWL_ERR(priv, "Unable to init nic\n");
1660                 return ret;
1661         }
1662
1663         /* make sure rfkill handshake bits are cleared */
1664         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1665         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1666                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1667
1668         /* clear (again), then enable host interrupts */
1669         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1670         iwl_enable_interrupts(priv);
1671
1672         /* really make sure rfkill handshake bits are cleared */
1673         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1674         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1675
1676         /* Copy original ucode data image from disk into backup cache.
1677          * This will be used to initialize the on-board processor's
1678          * data SRAM for a clean start when the runtime program first loads. */
1679         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1680                priv->ucode_data.len);
1681
1682         for (i = 0; i < MAX_HW_RESTARTS; i++) {
1683
1684                 priv->cfg->ops->smgmt->clear_station_table(priv);
1685
1686                 /* load bootstrap state machine,
1687                  * load bootstrap program into processor's memory,
1688                  * prepare to load the "initialize" uCode */
1689                 ret = priv->cfg->ops->lib->load_ucode(priv);
1690
1691                 if (ret) {
1692                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1693                                 ret);
1694                         continue;
1695                 }
1696
1697                 /* start card; "initialize" will load runtime ucode */
1698                 iwl_nic_start(priv);
1699
1700                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1701
1702                 return 0;
1703         }
1704
1705         set_bit(STATUS_EXIT_PENDING, &priv->status);
1706         __iwl_down(priv);
1707         clear_bit(STATUS_EXIT_PENDING, &priv->status);
1708
1709         /* tried to restart and config the device for as long as our
1710          * patience could withstand */
1711         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1712         return -EIO;
1713 }
1714
1715
1716 /*****************************************************************************
1717  *
1718  * Workqueue callbacks
1719  *
1720  *****************************************************************************/
1721
1722 static void iwl_bg_init_alive_start(struct work_struct *data)
1723 {
1724         struct iwl_priv *priv =
1725             container_of(data, struct iwl_priv, init_alive_start.work);
1726
1727         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1728                 return;
1729
1730         mutex_lock(&priv->mutex);
1731         priv->cfg->ops->lib->init_alive_start(priv);
1732         mutex_unlock(&priv->mutex);
1733 }
1734
1735 static void iwl_bg_alive_start(struct work_struct *data)
1736 {
1737         struct iwl_priv *priv =
1738             container_of(data, struct iwl_priv, alive_start.work);
1739
1740         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1741                 return;
1742
1743         mutex_lock(&priv->mutex);
1744         iwl_alive_start(priv);
1745         mutex_unlock(&priv->mutex);
1746 }
1747
1748 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1749 {
1750         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1751                         run_time_calib_work);
1752
1753         mutex_lock(&priv->mutex);
1754
1755         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1756             test_bit(STATUS_SCANNING, &priv->status)) {
1757                 mutex_unlock(&priv->mutex);
1758                 return;
1759         }
1760
1761         if (priv->start_calib) {
1762                 iwl_chain_noise_calibration(priv, &priv->statistics);
1763
1764                 iwl_sensitivity_calibration(priv, &priv->statistics);
1765         }
1766
1767         mutex_unlock(&priv->mutex);
1768         return;
1769 }
1770
1771 static void iwl_bg_up(struct work_struct *data)
1772 {
1773         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
1774
1775         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1776                 return;
1777
1778         mutex_lock(&priv->mutex);
1779         __iwl_up(priv);
1780         mutex_unlock(&priv->mutex);
1781         iwl_rfkill_set_hw_state(priv);
1782 }
1783
1784 static void iwl_bg_restart(struct work_struct *data)
1785 {
1786         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1787
1788         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1789                 return;
1790
1791         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1792                 mutex_lock(&priv->mutex);
1793                 priv->vif = NULL;
1794                 priv->is_open = 0;
1795                 mutex_unlock(&priv->mutex);
1796                 iwl_down(priv);
1797                 ieee80211_restart_hw(priv->hw);
1798         } else {
1799                 iwl_down(priv);
1800                 queue_work(priv->workqueue, &priv->up);
1801         }
1802 }
1803
1804 static void iwl_bg_rx_replenish(struct work_struct *data)
1805 {
1806         struct iwl_priv *priv =
1807             container_of(data, struct iwl_priv, rx_replenish);
1808
1809         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1810                 return;
1811
1812         mutex_lock(&priv->mutex);
1813         iwl_rx_replenish(priv);
1814         mutex_unlock(&priv->mutex);
1815 }
1816
1817 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1818
1819 void iwl_post_associate(struct iwl_priv *priv)
1820 {
1821         struct ieee80211_conf *conf = NULL;
1822         int ret = 0;
1823         unsigned long flags;
1824
1825         if (priv->iw_mode == NL80211_IFTYPE_AP) {
1826                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
1827                 return;
1828         }
1829
1830         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
1831                         priv->assoc_id, priv->active_rxon.bssid_addr);
1832
1833
1834         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1835                 return;
1836
1837
1838         if (!priv->vif || !priv->is_open)
1839                 return;
1840
1841         iwl_scan_cancel_timeout(priv, 200);
1842
1843         conf = ieee80211_get_hw_conf(priv->hw);
1844
1845         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1846         iwlcore_commit_rxon(priv);
1847
1848         iwl_setup_rxon_timing(priv);
1849         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
1850                               sizeof(priv->rxon_timing), &priv->rxon_timing);
1851         if (ret)
1852                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
1853                             "Attempting to continue.\n");
1854
1855         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1856
1857         iwl_set_rxon_ht(priv, &priv->current_ht_config);
1858
1859         if (priv->cfg->ops->hcmd->set_rxon_chain)
1860                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1861
1862         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
1863
1864         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
1865                         priv->assoc_id, priv->beacon_int);
1866
1867         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1868                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1869         else
1870                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1871
1872         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
1873                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1874                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1875                 else
1876                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1877
1878                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1879                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1880
1881         }
1882
1883         iwlcore_commit_rxon(priv);
1884
1885         switch (priv->iw_mode) {
1886         case NL80211_IFTYPE_STATION:
1887                 break;
1888
1889         case NL80211_IFTYPE_ADHOC:
1890
1891                 /* assume default assoc id */
1892                 priv->assoc_id = 1;
1893
1894                 iwl_rxon_add_station(priv, priv->bssid, 0);
1895                 iwl_send_beacon_cmd(priv);
1896
1897                 break;
1898
1899         default:
1900                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
1901                           __func__, priv->iw_mode);
1902                 break;
1903         }
1904
1905         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1906                 priv->assoc_station_added = 1;
1907
1908         spin_lock_irqsave(&priv->lock, flags);
1909         iwl_activate_qos(priv, 0);
1910         spin_unlock_irqrestore(&priv->lock, flags);
1911
1912         /* the chain noise calibration will enabled PM upon completion
1913          * If chain noise has already been run, then we need to enable
1914          * power management here */
1915         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
1916                 iwl_power_update_mode(priv, 0);
1917
1918         /* Enable Rx differential gain and sensitivity calibrations */
1919         iwl_chain_noise_reset(priv);
1920         priv->start_calib = 1;
1921
1922 }
1923
1924 /*****************************************************************************
1925  *
1926  * mac80211 entry point functions
1927  *
1928  *****************************************************************************/
1929
1930 #define UCODE_READY_TIMEOUT     (4 * HZ)
1931
1932 static int iwl_mac_start(struct ieee80211_hw *hw)
1933 {
1934         struct iwl_priv *priv = hw->priv;
1935         int ret;
1936
1937         IWL_DEBUG_MAC80211(priv, "enter\n");
1938
1939         /* we should be verifying the device is ready to be opened */
1940         mutex_lock(&priv->mutex);
1941
1942         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
1943         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
1944          * ucode filename and max sizes are card-specific. */
1945
1946         if (!priv->ucode_code.len) {
1947                 ret = iwl_read_ucode(priv);
1948                 if (ret) {
1949                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
1950                         mutex_unlock(&priv->mutex);
1951                         return ret;
1952                 }
1953         }
1954
1955         ret = __iwl_up(priv);
1956
1957         mutex_unlock(&priv->mutex);
1958
1959         iwl_rfkill_set_hw_state(priv);
1960
1961         if (ret)
1962                 return ret;
1963
1964         if (iwl_is_rfkill(priv))
1965                 goto out;
1966
1967         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1968
1969         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
1970          * mac80211 will not be run successfully. */
1971         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
1972                         test_bit(STATUS_READY, &priv->status),
1973                         UCODE_READY_TIMEOUT);
1974         if (!ret) {
1975                 if (!test_bit(STATUS_READY, &priv->status)) {
1976                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
1977                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
1978                         return -ETIMEDOUT;
1979                 }
1980         }
1981
1982 out:
1983         priv->is_open = 1;
1984         IWL_DEBUG_MAC80211(priv, "leave\n");
1985         return 0;
1986 }
1987
1988 static void iwl_mac_stop(struct ieee80211_hw *hw)
1989 {
1990         struct iwl_priv *priv = hw->priv;
1991
1992         IWL_DEBUG_MAC80211(priv, "enter\n");
1993
1994         if (!priv->is_open)
1995                 return;
1996
1997         priv->is_open = 0;
1998
1999         if (iwl_is_ready_rf(priv)) {
2000                 /* stop mac, cancel any scan request and clear
2001                  * RXON_FILTER_ASSOC_MSK BIT
2002                  */
2003                 mutex_lock(&priv->mutex);
2004                 iwl_scan_cancel_timeout(priv, 100);
2005                 mutex_unlock(&priv->mutex);
2006         }
2007
2008         iwl_down(priv);
2009
2010         flush_workqueue(priv->workqueue);
2011
2012         /* enable interrupts again in order to receive rfkill changes */
2013         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2014         iwl_enable_interrupts(priv);
2015
2016         IWL_DEBUG_MAC80211(priv, "leave\n");
2017 }
2018
2019 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2020 {
2021         struct iwl_priv *priv = hw->priv;
2022
2023         IWL_DEBUG_MACDUMP(priv, "enter\n");
2024
2025         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2026                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2027
2028         if (iwl_tx_skb(priv, skb))
2029                 dev_kfree_skb_any(skb);
2030
2031         IWL_DEBUG_MACDUMP(priv, "leave\n");
2032         return NETDEV_TX_OK;
2033 }
2034
2035 void iwl_config_ap(struct iwl_priv *priv)
2036 {
2037         int ret = 0;
2038         unsigned long flags;
2039
2040         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2041                 return;
2042
2043         /* The following should be done only at AP bring up */
2044         if (!iwl_is_associated(priv)) {
2045
2046                 /* RXON - unassoc (to set timing command) */
2047                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2048                 iwlcore_commit_rxon(priv);
2049
2050                 /* RXON Timing */
2051                 iwl_setup_rxon_timing(priv);
2052                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2053                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2054                 if (ret)
2055                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2056                                         "Attempting to continue.\n");
2057
2058                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2059                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2060
2061                 /* FIXME: what should be the assoc_id for AP? */
2062                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2063                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2064                         priv->staging_rxon.flags |=
2065                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2066                 else
2067                         priv->staging_rxon.flags &=
2068                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2069
2070                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2071                         if (priv->assoc_capability &
2072                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2073                                 priv->staging_rxon.flags |=
2074                                         RXON_FLG_SHORT_SLOT_MSK;
2075                         else
2076                                 priv->staging_rxon.flags &=
2077                                         ~RXON_FLG_SHORT_SLOT_MSK;
2078
2079                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2080                                 priv->staging_rxon.flags &=
2081                                         ~RXON_FLG_SHORT_SLOT_MSK;
2082                 }
2083                 /* restore RXON assoc */
2084                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2085                 iwlcore_commit_rxon(priv);
2086                 spin_lock_irqsave(&priv->lock, flags);
2087                 iwl_activate_qos(priv, 1);
2088                 spin_unlock_irqrestore(&priv->lock, flags);
2089                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2090         }
2091         iwl_send_beacon_cmd(priv);
2092
2093         /* FIXME - we need to add code here to detect a totally new
2094          * configuration, reset the AP, unassoc, rxon timing, assoc,
2095          * clear sta table, add BCAST sta... */
2096 }
2097
2098 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2099                         struct ieee80211_key_conf *keyconf, const u8 *addr,
2100                         u32 iv32, u16 *phase1key)
2101 {
2102
2103         struct iwl_priv *priv = hw->priv;
2104         IWL_DEBUG_MAC80211(priv, "enter\n");
2105
2106         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2107
2108         IWL_DEBUG_MAC80211(priv, "leave\n");
2109 }
2110
2111 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2112                            struct ieee80211_vif *vif,
2113                            struct ieee80211_sta *sta,
2114                            struct ieee80211_key_conf *key)
2115 {
2116         struct iwl_priv *priv = hw->priv;
2117         const u8 *addr;
2118         int ret;
2119         u8 sta_id;
2120         bool is_default_wep_key = false;
2121
2122         IWL_DEBUG_MAC80211(priv, "enter\n");
2123
2124         if (priv->hw_params.sw_crypto) {
2125                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2126                 return -EOPNOTSUPP;
2127         }
2128         addr = sta ? sta->addr : iwl_bcast_addr;
2129         sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
2130         if (sta_id == IWL_INVALID_STATION) {
2131                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2132                                    addr);
2133                 return -EINVAL;
2134
2135         }
2136
2137         mutex_lock(&priv->mutex);
2138         iwl_scan_cancel_timeout(priv, 100);
2139         mutex_unlock(&priv->mutex);
2140
2141         /* If we are getting WEP group key and we didn't receive any key mapping
2142          * so far, we are in legacy wep mode (group key only), otherwise we are
2143          * in 1X mode.
2144          * In legacy wep mode, we use another host command to the uCode */
2145         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2146                 priv->iw_mode != NL80211_IFTYPE_AP) {
2147                 if (cmd == SET_KEY)
2148                         is_default_wep_key = !priv->key_mapping_key;
2149                 else
2150                         is_default_wep_key =
2151                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2152         }
2153
2154         switch (cmd) {
2155         case SET_KEY:
2156                 if (is_default_wep_key)
2157                         ret = iwl_set_default_wep_key(priv, key);
2158                 else
2159                         ret = iwl_set_dynamic_key(priv, key, sta_id);
2160
2161                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2162                 break;
2163         case DISABLE_KEY:
2164                 if (is_default_wep_key)
2165                         ret = iwl_remove_default_wep_key(priv, key);
2166                 else
2167                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
2168
2169                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2170                 break;
2171         default:
2172                 ret = -EINVAL;
2173         }
2174
2175         IWL_DEBUG_MAC80211(priv, "leave\n");
2176
2177         return ret;
2178 }
2179
2180 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2181                              enum ieee80211_ampdu_mlme_action action,
2182                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2183 {
2184         struct iwl_priv *priv = hw->priv;
2185         int ret;
2186
2187         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2188                      sta->addr, tid);
2189
2190         if (!(priv->cfg->sku & IWL_SKU_N))
2191                 return -EACCES;
2192
2193         switch (action) {
2194         case IEEE80211_AMPDU_RX_START:
2195                 IWL_DEBUG_HT(priv, "start Rx\n");
2196                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2197         case IEEE80211_AMPDU_RX_STOP:
2198                 IWL_DEBUG_HT(priv, "stop Rx\n");
2199                 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2200                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2201                         return 0;
2202                 else
2203                         return ret;
2204         case IEEE80211_AMPDU_TX_START:
2205                 IWL_DEBUG_HT(priv, "start Tx\n");
2206                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2207         case IEEE80211_AMPDU_TX_STOP:
2208                 IWL_DEBUG_HT(priv, "stop Tx\n");
2209                 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2210                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2211                         return 0;
2212                 else
2213                         return ret;
2214         default:
2215                 IWL_DEBUG_HT(priv, "unknown\n");
2216                 return -EINVAL;
2217                 break;
2218         }
2219         return 0;
2220 }
2221
2222 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2223                              struct ieee80211_low_level_stats *stats)
2224 {
2225         struct iwl_priv *priv = hw->priv;
2226
2227         priv = hw->priv;
2228         IWL_DEBUG_MAC80211(priv, "enter\n");
2229         IWL_DEBUG_MAC80211(priv, "leave\n");
2230
2231         return 0;
2232 }
2233
2234 /*****************************************************************************
2235  *
2236  * sysfs attributes
2237  *
2238  *****************************************************************************/
2239
2240 #ifdef CONFIG_IWLWIFI_DEBUG
2241
2242 /*
2243  * The following adds a new attribute to the sysfs representation
2244  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2245  * used for controlling the debug level.
2246  *
2247  * See the level definitions in iwl for details.
2248  */
2249
2250 static ssize_t show_debug_level(struct device *d,
2251                                 struct device_attribute *attr, char *buf)
2252 {
2253         struct iwl_priv *priv = dev_get_drvdata(d);
2254
2255         return sprintf(buf, "0x%08X\n", priv->debug_level);
2256 }
2257 static ssize_t store_debug_level(struct device *d,
2258                                 struct device_attribute *attr,
2259                                  const char *buf, size_t count)
2260 {
2261         struct iwl_priv *priv = dev_get_drvdata(d);
2262         unsigned long val;
2263         int ret;
2264
2265         ret = strict_strtoul(buf, 0, &val);
2266         if (ret)
2267                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2268         else
2269                 priv->debug_level = val;
2270
2271         return strnlen(buf, count);
2272 }
2273
2274 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2275                         show_debug_level, store_debug_level);
2276
2277
2278 #endif /* CONFIG_IWLWIFI_DEBUG */
2279
2280
2281 static ssize_t show_version(struct device *d,
2282                                 struct device_attribute *attr, char *buf)
2283 {
2284         struct iwl_priv *priv = dev_get_drvdata(d);
2285         struct iwl_alive_resp *palive = &priv->card_alive;
2286         ssize_t pos = 0;
2287         u16 eeprom_ver;
2288
2289         if (palive->is_valid)
2290                 pos += sprintf(buf + pos,
2291                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2292                                 "fw type: 0x%01X 0x%01X\n",
2293                                 palive->ucode_major, palive->ucode_minor,
2294                                 palive->sw_rev[0], palive->sw_rev[1],
2295                                 palive->ver_type, palive->ver_subtype);
2296         else
2297                 pos += sprintf(buf + pos, "fw not loaded\n");
2298
2299         if (priv->eeprom) {
2300                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
2301                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
2302                                  eeprom_ver);
2303         } else {
2304                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
2305         }
2306
2307         return pos;
2308 }
2309
2310 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
2311
2312 static ssize_t show_temperature(struct device *d,
2313                                 struct device_attribute *attr, char *buf)
2314 {
2315         struct iwl_priv *priv = dev_get_drvdata(d);
2316
2317         if (!iwl_is_alive(priv))
2318                 return -EAGAIN;
2319
2320         return sprintf(buf, "%d\n", priv->temperature);
2321 }
2322
2323 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2324
2325 static ssize_t show_tx_power(struct device *d,
2326                              struct device_attribute *attr, char *buf)
2327 {
2328         struct iwl_priv *priv = dev_get_drvdata(d);
2329
2330         if (!iwl_is_ready_rf(priv))
2331                 return sprintf(buf, "off\n");
2332         else
2333                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2334 }
2335
2336 static ssize_t store_tx_power(struct device *d,
2337                               struct device_attribute *attr,
2338                               const char *buf, size_t count)
2339 {
2340         struct iwl_priv *priv = dev_get_drvdata(d);
2341         unsigned long val;
2342         int ret;
2343
2344         ret = strict_strtoul(buf, 10, &val);
2345         if (ret)
2346                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2347         else
2348                 iwl_set_tx_power(priv, val, false);
2349
2350         return count;
2351 }
2352
2353 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2354
2355 static ssize_t show_flags(struct device *d,
2356                           struct device_attribute *attr, char *buf)
2357 {
2358         struct iwl_priv *priv = dev_get_drvdata(d);
2359
2360         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2361 }
2362
2363 static ssize_t store_flags(struct device *d,
2364                            struct device_attribute *attr,
2365                            const char *buf, size_t count)
2366 {
2367         struct iwl_priv *priv = dev_get_drvdata(d);
2368         unsigned long val;
2369         u32 flags;
2370         int ret = strict_strtoul(buf, 0, &val);
2371         if (ret)
2372                 return ret;
2373         flags = (u32)val;
2374
2375         mutex_lock(&priv->mutex);
2376         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
2377                 /* Cancel any currently running scans... */
2378                 if (iwl_scan_cancel_timeout(priv, 100))
2379                         IWL_WARN(priv, "Could not cancel scan.\n");
2380                 else {
2381                         IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
2382                         priv->staging_rxon.flags = cpu_to_le32(flags);
2383                         iwlcore_commit_rxon(priv);
2384                 }
2385         }
2386         mutex_unlock(&priv->mutex);
2387
2388         return count;
2389 }
2390
2391 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
2392
2393 static ssize_t show_filter_flags(struct device *d,
2394                                  struct device_attribute *attr, char *buf)
2395 {
2396         struct iwl_priv *priv = dev_get_drvdata(d);
2397
2398         return sprintf(buf, "0x%04X\n",
2399                 le32_to_cpu(priv->active_rxon.filter_flags));
2400 }
2401
2402 static ssize_t store_filter_flags(struct device *d,
2403                                   struct device_attribute *attr,
2404                                   const char *buf, size_t count)
2405 {
2406         struct iwl_priv *priv = dev_get_drvdata(d);
2407         unsigned long val;
2408         u32 filter_flags;
2409         int ret = strict_strtoul(buf, 0, &val);
2410         if (ret)
2411                 return ret;
2412         filter_flags = (u32)val;
2413
2414         mutex_lock(&priv->mutex);
2415         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
2416                 /* Cancel any currently running scans... */
2417                 if (iwl_scan_cancel_timeout(priv, 100))
2418                         IWL_WARN(priv, "Could not cancel scan.\n");
2419                 else {
2420                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
2421                                        "0x%04X\n", filter_flags);
2422                         priv->staging_rxon.filter_flags =
2423                                 cpu_to_le32(filter_flags);
2424                         iwlcore_commit_rxon(priv);
2425                 }
2426         }
2427         mutex_unlock(&priv->mutex);
2428
2429         return count;
2430 }
2431
2432 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
2433                    store_filter_flags);
2434
2435 static ssize_t store_power_level(struct device *d,
2436                                  struct device_attribute *attr,
2437                                  const char *buf, size_t count)
2438 {
2439         struct iwl_priv *priv = dev_get_drvdata(d);
2440         int ret;
2441         unsigned long mode;
2442
2443
2444         mutex_lock(&priv->mutex);
2445
2446         ret = strict_strtoul(buf, 10, &mode);
2447         if (ret)
2448                 goto out;
2449
2450         ret = iwl_power_set_user_mode(priv, mode);
2451         if (ret) {
2452                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
2453                 goto out;
2454         }
2455         ret = count;
2456
2457  out:
2458         mutex_unlock(&priv->mutex);
2459         return ret;
2460 }
2461
2462 static ssize_t show_power_level(struct device *d,
2463                                 struct device_attribute *attr, char *buf)
2464 {
2465         struct iwl_priv *priv = dev_get_drvdata(d);
2466         int mode = priv->power_data.user_power_setting;
2467         int level = priv->power_data.power_mode;
2468         char *p = buf;
2469
2470         p += sprintf(p, "INDEX:%d\t", level);
2471         p += sprintf(p, "USER:%d\n", mode);
2472         return p - buf + 1;
2473 }
2474
2475 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
2476                    store_power_level);
2477
2478 static ssize_t show_qos(struct device *d,
2479                                 struct device_attribute *attr, char *buf)
2480 {
2481         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2482         char *p = buf;
2483         int   q;
2484
2485         for (q = 0; q < AC_NUM; q++) {
2486                 p += sprintf(p, "\tcw_min\tcw_max\taifsn\ttxop\n");
2487                 p += sprintf(p, "AC[%d]\t%u\t%u\t%u\t%u\n", q,
2488                              priv->qos_data.def_qos_parm.ac[q].cw_min,
2489                              priv->qos_data.def_qos_parm.ac[q].cw_max,
2490                              priv->qos_data.def_qos_parm.ac[q].aifsn,
2491                              priv->qos_data.def_qos_parm.ac[q].edca_txop);
2492         }
2493
2494         return p - buf + 1;
2495 }
2496
2497 static DEVICE_ATTR(qos, S_IRUGO, show_qos, NULL);
2498
2499 static ssize_t show_statistics(struct device *d,
2500                                struct device_attribute *attr, char *buf)
2501 {
2502         struct iwl_priv *priv = dev_get_drvdata(d);
2503         u32 size = sizeof(struct iwl_notif_statistics);
2504         u32 len = 0, ofs = 0;
2505         u8 *data = (u8 *)&priv->statistics;
2506         int rc = 0;
2507
2508         if (!iwl_is_alive(priv))
2509                 return -EAGAIN;
2510
2511         mutex_lock(&priv->mutex);
2512         rc = iwl_send_statistics_request(priv, 0);
2513         mutex_unlock(&priv->mutex);
2514
2515         if (rc) {
2516                 len = sprintf(buf,
2517                               "Error sending statistics request: 0x%08X\n", rc);
2518                 return len;
2519         }
2520
2521         while (size && (PAGE_SIZE - len)) {
2522                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
2523                                    PAGE_SIZE - len, 1);
2524                 len = strlen(buf);
2525                 if (PAGE_SIZE - len)
2526                         buf[len++] = '\n';
2527
2528                 ofs += 16;
2529                 size -= min(size, 16U);
2530         }
2531
2532         return len;
2533 }
2534
2535 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
2536
2537
2538 /*****************************************************************************
2539  *
2540  * driver setup and teardown
2541  *
2542  *****************************************************************************/
2543
2544 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2545 {
2546         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2547
2548         init_waitqueue_head(&priv->wait_command_queue);
2549
2550         INIT_WORK(&priv->up, iwl_bg_up);
2551         INIT_WORK(&priv->restart, iwl_bg_restart);
2552         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
2553         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
2554         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2555         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2556         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
2557         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
2558
2559         iwl_setup_scan_deferred_work(priv);
2560
2561         if (priv->cfg->ops->lib->setup_deferred_work)
2562                 priv->cfg->ops->lib->setup_deferred_work(priv);
2563
2564         init_timer(&priv->statistics_periodic);
2565         priv->statistics_periodic.data = (unsigned long)priv;
2566         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2567
2568         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2569                      iwl_irq_tasklet, (unsigned long)priv);
2570 }
2571
2572 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2573 {
2574         if (priv->cfg->ops->lib->cancel_deferred_work)
2575                 priv->cfg->ops->lib->cancel_deferred_work(priv);
2576
2577         cancel_delayed_work_sync(&priv->init_alive_start);
2578         cancel_delayed_work(&priv->scan_check);
2579         cancel_delayed_work(&priv->alive_start);
2580         cancel_work_sync(&priv->beacon_update);
2581         del_timer_sync(&priv->statistics_periodic);
2582 }
2583
2584 static struct attribute *iwl_sysfs_entries[] = {
2585         &dev_attr_flags.attr,
2586         &dev_attr_filter_flags.attr,
2587         &dev_attr_power_level.attr,
2588         &dev_attr_statistics.attr,
2589         &dev_attr_temperature.attr,
2590         &dev_attr_tx_power.attr,
2591 #ifdef CONFIG_IWLWIFI_DEBUG
2592         &dev_attr_debug_level.attr,
2593 #endif
2594         &dev_attr_version.attr,
2595         &dev_attr_qos.attr,
2596         NULL
2597 };
2598
2599 static struct attribute_group iwl_attribute_group = {
2600         .name = NULL,           /* put in device directory */
2601         .attrs = iwl_sysfs_entries,
2602 };
2603
2604 static struct ieee80211_ops iwl_hw_ops = {
2605         .tx = iwl_mac_tx,
2606         .start = iwl_mac_start,
2607         .stop = iwl_mac_stop,
2608         .add_interface = iwl_mac_add_interface,
2609         .remove_interface = iwl_mac_remove_interface,
2610         .config = iwl_mac_config,
2611         .configure_filter = iwl_configure_filter,
2612         .set_key = iwl_mac_set_key,
2613         .update_tkip_key = iwl_mac_update_tkip_key,
2614         .get_stats = iwl_mac_get_stats,
2615         .get_tx_stats = iwl_mac_get_tx_stats,
2616         .conf_tx = iwl_mac_conf_tx,
2617         .reset_tsf = iwl_mac_reset_tsf,
2618         .bss_info_changed = iwl_bss_info_changed,
2619         .ampdu_action = iwl_mac_ampdu_action,
2620         .hw_scan = iwl_mac_hw_scan
2621 };
2622
2623 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2624 {
2625         int err = 0;
2626         struct iwl_priv *priv;
2627         struct ieee80211_hw *hw;
2628         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
2629         unsigned long flags;
2630         u16 pci_cmd;
2631
2632         /************************
2633          * 1. Allocating HW data
2634          ************************/
2635
2636         /* Disabling hardware scan means that mac80211 will perform scans
2637          * "the hard way", rather than using device's scan. */
2638         if (cfg->mod_params->disable_hw_scan) {
2639                 if (cfg->mod_params->debug & IWL_DL_INFO)
2640                         dev_printk(KERN_DEBUG, &(pdev->dev),
2641                                    "Disabling hw_scan\n");
2642                 iwl_hw_ops.hw_scan = NULL;
2643         }
2644
2645         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
2646         if (!hw) {
2647                 err = -ENOMEM;
2648                 goto out;
2649         }
2650         priv = hw->priv;
2651         /* At this point both hw and priv are allocated. */
2652
2653         SET_IEEE80211_DEV(hw, &pdev->dev);
2654
2655         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
2656         priv->cfg = cfg;
2657         priv->pci_dev = pdev;
2658
2659 #ifdef CONFIG_IWLWIFI_DEBUG
2660         priv->debug_level = priv->cfg->mod_params->debug;
2661         atomic_set(&priv->restrict_refcnt, 0);
2662 #endif
2663
2664         /**************************
2665          * 2. Initializing PCI bus
2666          **************************/
2667         if (pci_enable_device(pdev)) {
2668                 err = -ENODEV;
2669                 goto out_ieee80211_free_hw;
2670         }
2671
2672         pci_set_master(pdev);
2673
2674         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
2675         if (!err)
2676                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
2677         if (err) {
2678                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2679                 if (!err)
2680                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2681                 /* both attempts failed: */
2682                 if (err) {
2683                         IWL_WARN(priv, "No suitable DMA available.\n");
2684                         goto out_pci_disable_device;
2685                 }
2686         }
2687
2688         err = pci_request_regions(pdev, DRV_NAME);
2689         if (err)
2690                 goto out_pci_disable_device;
2691
2692         pci_set_drvdata(pdev, priv);
2693
2694
2695         /***********************
2696          * 3. Read REV register
2697          ***********************/
2698         priv->hw_base = pci_iomap(pdev, 0, 0);
2699         if (!priv->hw_base) {
2700                 err = -ENODEV;
2701                 goto out_pci_release_regions;
2702         }
2703
2704         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
2705                 (unsigned long long) pci_resource_len(pdev, 0));
2706         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
2707
2708         iwl_hw_detect(priv);
2709         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
2710                 priv->cfg->name, priv->hw_rev);
2711
2712         /* We disable the RETRY_TIMEOUT register (0x41) to keep
2713          * PCI Tx retries from interfering with C3 CPU state */
2714         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2715
2716         /* amp init */
2717         err = priv->cfg->ops->lib->apm_ops.init(priv);
2718         if (err < 0) {
2719                 IWL_ERR(priv, "Failed to init APMG\n");
2720                 goto out_iounmap;
2721         }
2722         /*****************
2723          * 4. Read EEPROM
2724          *****************/
2725         /* Read the EEPROM */
2726         err = iwl_eeprom_init(priv);
2727         if (err) {
2728                 IWL_ERR(priv, "Unable to init EEPROM\n");
2729                 goto out_iounmap;
2730         }
2731         err = iwl_eeprom_check_version(priv);
2732         if (err)
2733                 goto out_free_eeprom;
2734
2735         /* extract MAC Address */
2736         iwl_eeprom_get_mac(priv, priv->mac_addr);
2737         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
2738         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2739
2740         /************************
2741          * 5. Setup HW constants
2742          ************************/
2743         if (iwl_set_hw_params(priv)) {
2744                 IWL_ERR(priv, "failed to set hw parameters\n");
2745                 goto out_free_eeprom;
2746         }
2747
2748         /*******************
2749          * 6. Setup priv
2750          *******************/
2751
2752         err = iwl_init_drv(priv);
2753         if (err)
2754                 goto out_free_eeprom;
2755         /* At this point both hw and priv are initialized. */
2756
2757         /********************
2758          * 7. Setup services
2759          ********************/
2760         spin_lock_irqsave(&priv->lock, flags);
2761         iwl_disable_interrupts(priv);
2762         spin_unlock_irqrestore(&priv->lock, flags);
2763
2764         pci_enable_msi(priv->pci_dev);
2765
2766         err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2767                           DRV_NAME, priv);
2768         if (err) {
2769                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
2770                 goto out_disable_msi;
2771         }
2772         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
2773         if (err) {
2774                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2775                 goto out_free_irq;
2776         }
2777
2778         iwl_setup_deferred_work(priv);
2779         iwl_setup_rx_handlers(priv);
2780
2781         /**********************************
2782          * 8. Setup and register mac80211
2783          **********************************/
2784
2785         /* enable interrupts if needed: hw bug w/a */
2786         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2787         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2788                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2789                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2790         }
2791
2792         iwl_enable_interrupts(priv);
2793
2794         err = iwl_setup_mac(priv);
2795         if (err)
2796                 goto out_remove_sysfs;
2797
2798         err = iwl_dbgfs_register(priv, DRV_NAME);
2799         if (err)
2800                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2801
2802         /* If platform's RF_KILL switch is NOT set to KILL */
2803         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2804                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2805         else
2806                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2807
2808         err = iwl_rfkill_init(priv);
2809         if (err)
2810                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
2811                                   "Ignoring error: %d\n", err);
2812         else
2813                 iwl_rfkill_set_hw_state(priv);
2814
2815         iwl_power_initialize(priv);
2816         return 0;
2817
2818  out_remove_sysfs:
2819         destroy_workqueue(priv->workqueue);
2820         priv->workqueue = NULL;
2821         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2822  out_free_irq:
2823         free_irq(priv->pci_dev->irq, priv);
2824  out_disable_msi:
2825         pci_disable_msi(priv->pci_dev);
2826         iwl_uninit_drv(priv);
2827  out_free_eeprom:
2828         iwl_eeprom_free(priv);
2829  out_iounmap:
2830         pci_iounmap(pdev, priv->hw_base);
2831  out_pci_release_regions:
2832         pci_set_drvdata(pdev, NULL);
2833         pci_release_regions(pdev);
2834  out_pci_disable_device:
2835         pci_disable_device(pdev);
2836  out_ieee80211_free_hw:
2837         ieee80211_free_hw(priv->hw);
2838  out:
2839         return err;
2840 }
2841
2842 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
2843 {
2844         struct iwl_priv *priv = pci_get_drvdata(pdev);
2845         unsigned long flags;
2846
2847         if (!priv)
2848                 return;
2849
2850         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
2851
2852         iwl_dbgfs_unregister(priv);
2853         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2854
2855         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
2856          * to be called and iwl_down since we are removing the device
2857          * we need to set STATUS_EXIT_PENDING bit.
2858          */
2859         set_bit(STATUS_EXIT_PENDING, &priv->status);
2860         if (priv->mac80211_registered) {
2861                 ieee80211_unregister_hw(priv->hw);
2862                 priv->mac80211_registered = 0;
2863         } else {
2864                 iwl_down(priv);
2865         }
2866
2867         /* make sure we flush any pending irq or
2868          * tasklet for the driver
2869          */
2870         spin_lock_irqsave(&priv->lock, flags);
2871         iwl_disable_interrupts(priv);
2872         spin_unlock_irqrestore(&priv->lock, flags);
2873
2874         iwl_synchronize_irq(priv);
2875
2876         iwl_rfkill_unregister(priv);
2877         iwl_dealloc_ucode_pci(priv);
2878
2879         if (priv->rxq.bd)
2880                 iwl_rx_queue_free(priv, &priv->rxq);
2881         iwl_hw_txq_ctx_free(priv);
2882
2883         priv->cfg->ops->smgmt->clear_station_table(priv);
2884         iwl_eeprom_free(priv);
2885
2886
2887         /*netif_stop_queue(dev); */
2888         flush_workqueue(priv->workqueue);
2889
2890         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
2891          * priv->workqueue... so we can't take down the workqueue
2892          * until now... */
2893         destroy_workqueue(priv->workqueue);
2894         priv->workqueue = NULL;
2895
2896         free_irq(priv->pci_dev->irq, priv);
2897         pci_disable_msi(priv->pci_dev);
2898         pci_iounmap(pdev, priv->hw_base);
2899         pci_release_regions(pdev);
2900         pci_disable_device(pdev);
2901         pci_set_drvdata(pdev, NULL);
2902
2903         iwl_uninit_drv(priv);
2904
2905         if (priv->ibss_beacon)
2906                 dev_kfree_skb(priv->ibss_beacon);
2907
2908         ieee80211_free_hw(priv->hw);
2909 }
2910
2911
2912 /*****************************************************************************
2913  *
2914  * driver and module entry point
2915  *
2916  *****************************************************************************/
2917
2918 /* Hardware specific file defines the PCI IDs table for that hardware module */
2919 static struct pci_device_id iwl_hw_card_ids[] = {
2920 #ifdef CONFIG_IWL4965
2921         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
2922         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
2923 #endif /* CONFIG_IWL4965 */
2924 #ifdef CONFIG_IWL5000
2925         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
2926         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
2927         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
2928         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
2929         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
2930         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
2931         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
2932         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
2933         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
2934         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
2935 /* 5350 WiFi/WiMax */
2936         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
2937         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
2938         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
2939 /* 5150 Wifi/WiMax */
2940         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
2941         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
2942 /* 6000/6050 Series */
2943         {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
2944         {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
2945         {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
2946         {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
2947         {IWL_PCI_DEVICE(0x422C, PCI_ANY_ID, iwl6000_2agn_cfg)},
2948         {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
2949         {IWL_PCI_DEVICE(0x4239, PCI_ANY_ID, iwl6000_2agn_cfg)},
2950         {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
2951         {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
2952         {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
2953         {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
2954         {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
2955         {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
2956 /* 1000 Series WiFi */
2957         {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl1000_bgn_cfg)},
2958         {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl1000_bgn_cfg)},
2959 #endif /* CONFIG_IWL5000 */
2960
2961         {0}
2962 };
2963 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
2964
2965 static struct pci_driver iwl_driver = {
2966         .name = DRV_NAME,
2967         .id_table = iwl_hw_card_ids,
2968         .probe = iwl_pci_probe,
2969         .remove = __devexit_p(iwl_pci_remove),
2970 #ifdef CONFIG_PM
2971         .suspend = iwl_pci_suspend,
2972         .resume = iwl_pci_resume,
2973 #endif
2974 };
2975
2976 static int __init iwl_init(void)
2977 {
2978
2979         int ret;
2980         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
2981         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
2982
2983         ret = iwlagn_rate_control_register();
2984         if (ret) {
2985                 printk(KERN_ERR DRV_NAME
2986                        "Unable to register rate control algorithm: %d\n", ret);
2987                 return ret;
2988         }
2989
2990         ret = pci_register_driver(&iwl_driver);
2991         if (ret) {
2992                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
2993                 goto error_register;
2994         }
2995
2996         return ret;
2997
2998 error_register:
2999         iwlagn_rate_control_unregister();
3000         return ret;
3001 }
3002
3003 static void __exit iwl_exit(void)
3004 {
3005         pci_unregister_driver(&iwl_driver);
3006         iwlagn_rate_control_unregister();
3007 }
3008
3009 module_exit(iwl_exit);
3010 module_init(iwl_init);