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         if (!priv->error_recovering)
 194                 priv->start_calib = 0;
 195
 196         /* Add the broadcast address so we can send broadcast frames */
 197         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 198                                                 IWL_INVALID_STATION) {
 199                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 200                 return -EIO;
 201         }
 202
 203         /* If we have set the ASSOC_MSK and we are in BSS mode then
 204          * add the IWL_AP_ID to the station rate table */
 205         if (new_assoc) {
 206                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 207                         ret = iwl_rxon_add_station(priv,
 208                                            priv->active_rxon.bssid_addr, 1);
 209                         if (ret == IWL_INVALID_STATION) {
 210                                 IWL_ERR(priv,
 211                                         "Error adding AP address for TX.\n");
 212                                 return -EIO;
 213                         }
 214                         priv->assoc_station_added = 1;
 215                         if (priv->default_wep_key &&
 216                             iwl_send_static_wepkey_cmd(priv, 0))
 217                                 IWL_ERR(priv,
 218                                         "Could not send WEP static key.\n");
 219                 }
 220
 221                 /* Apply the new configuration
 222                  * RXON assoc doesn't clear the station table in uCode,
 223                  */
 224                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 225                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 226                 if (ret) {
 227                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 228                         return ret;
 229                 }
 230                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 231         }
 232
 233         iwl_init_sensitivity(priv);
 234
 235         /* If we issue a new RXON command which required a tune then we must
 236          * send a new TXPOWER command or we won't be able to Tx any frames */
 237         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 238         if (ret) {
 239                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 240                 return ret;
 241         }
 242
 243         return 0;
 244 }
 245
 246 void iwl_update_chain_flags(struct iwl_priv *priv)
 247 {
 248
 249         if (priv->cfg->ops->hcmd->set_rxon_chain)
 250                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 251         iwlcore_commit_rxon(priv);
 252 }
 253
 254 static void iwl_clear_free_frames(struct iwl_priv *priv)
 255 {
 256         struct list_head *element;
 257
 258         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 259                        priv->frames_count);
 260
 261         while (!list_empty(&priv->free_frames)) {
 262                 element = priv->free_frames.next;
 263                 list_del(element);
 264                 kfree(list_entry(element, struct iwl_frame, list));
 265                 priv->frames_count--;
 266         }
 267
 268         if (priv->frames_count) {
 269                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 270                             priv->frames_count);
 271                 priv->frames_count = 0;
 272         }
 273 }
 274
 275 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 276 {
 277         struct iwl_frame *frame;
 278         struct list_head *element;
 279         if (list_empty(&priv->free_frames)) {
 280                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 281                 if (!frame) {
 282                         IWL_ERR(priv, "Could not allocate frame!\n");
 283                         return NULL;
 284                 }
 285
 286                 priv->frames_count++;
 287                 return frame;
 288         }
 289
 290         element = priv->free_frames.next;
 291         list_del(element);
 292         return list_entry(element, struct iwl_frame, list);
 293 }
 294
 295 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 296 {
 297         memset(frame, 0, sizeof(*frame));
 298         list_add(&frame->list, &priv->free_frames);
 299 }
 300
 301 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 302                                           struct ieee80211_hdr *hdr,
 303                                           int left)
 304 {
 305         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 306             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 307              (priv->iw_mode != NL80211_IFTYPE_AP)))
 308                 return 0;
 309
 310         if (priv->ibss_beacon->len > left)
 311                 return 0;
 312
 313         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 314
 315         return priv->ibss_beacon->len;
 316 }
 317
 318 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 319                                        struct iwl_frame *frame, u8 rate)
 320 {
 321         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 322         unsigned int frame_size;
 323
 324         tx_beacon_cmd = &frame->u.beacon;
 325         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 326
 327         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 328         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 329
 330         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 331                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 332
 333         BUG_ON(frame_size > MAX_MPDU_SIZE);
 334         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 335
 336         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 337                 tx_beacon_cmd->tx.rate_n_flags =
 338                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 339         else
 340                 tx_beacon_cmd->tx.rate_n_flags =
 341                         iwl_hw_set_rate_n_flags(rate, 0);
 342
 343         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 344                                      TX_CMD_FLG_TSF_MSK |
 345                                      TX_CMD_FLG_STA_RATE_MSK;
 346
 347         return sizeof(*tx_beacon_cmd) + frame_size;
 348 }
 349 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 350 {
 351         struct iwl_frame *frame;
 352         unsigned int frame_size;
 353         int rc;
 354         u8 rate;
 355
 356         frame = iwl_get_free_frame(priv);
 357
 358         if (!frame) {
 359                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 360                           "command.\n");
 361                 return -ENOMEM;
 362         }
 363
 364         rate = iwl_rate_get_lowest_plcp(priv);
 365
 366         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 367
 368         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 369                               &frame->u.cmd[0]);
 370
 371         iwl_free_frame(priv, frame);
 372
 373         return rc;
 374 }
 375
 376 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 377 {
 378         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 379
 380         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 381         if (sizeof(dma_addr_t) > sizeof(u32))
 382                 addr |=
 383                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 384
 385         return addr;
 386 }
 387
 388 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 389 {
 390         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 391
 392         return le16_to_cpu(tb->hi_n_len) >> 4;
 393 }
 394
 395 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 396                                   dma_addr_t addr, u16 len)
 397 {
 398         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 399         u16 hi_n_len = len << 4;
 400
 401         put_unaligned_le32(addr, &tb->lo);
 402         if (sizeof(dma_addr_t) > sizeof(u32))
 403                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 404
 405         tb->hi_n_len = cpu_to_le16(hi_n_len);
 406
 407         tfd->num_tbs = idx + 1;
 408 }
 409
 410 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 411 {
 412         return tfd->num_tbs & 0x1f;
 413 }
 414
 415 /**
 416  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 417  * @priv - driver private data
 418  * @txq - tx queue
 419  *
 420  * Does NOT advance any TFD circular buffer read/write indexes
 421  * Does NOT free the TFD itself (which is within circular buffer)
 422  */
 423 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 424 {
 425         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 426         struct iwl_tfd *tfd;
 427         struct pci_dev *dev = priv->pci_dev;
 428         int index = txq->q.read_ptr;
 429         int i;
 430         int num_tbs;
 431
 432         tfd = &tfd_tmp[index];
 433
 434         /* Sanity check on number of chunks */
 435         num_tbs = iwl_tfd_get_num_tbs(tfd);
 436
 437         if (num_tbs >= IWL_NUM_OF_TBS) {
 438                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 439                 /* @todo issue fatal error, it is quite serious situation */
 440                 return;
 441         }
 442
 443         /* Unmap tx_cmd */
 444         if (num_tbs)
 445                 pci_unmap_single(dev,
 446                                 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
 447                                 pci_unmap_len(&txq->cmd[index]->meta, len),
 448                                 PCI_DMA_BIDIRECTIONAL);
 449
 450         /* Unmap chunks, if any. */
 451         for (i = 1; i < num_tbs; i++) {
 452                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 453                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 454
 455                 if (txq->txb) {
 456                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 457                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 458                 }
 459         }
 460 }
 461
 462 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 463                                  struct iwl_tx_queue *txq,
 464                                  dma_addr_t addr, u16 len,
 465                                  u8 reset, u8 pad)
 466 {
 467         struct iwl_queue *q;
 468         struct iwl_tfd *tfd, *tfd_tmp;
 469         u32 num_tbs;
 470
 471         q = &txq->q;
 472         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 473         tfd = &tfd_tmp[q->write_ptr];
 474
 475         if (reset)
 476                 memset(tfd, 0, sizeof(*tfd));
 477
 478         num_tbs = iwl_tfd_get_num_tbs(tfd);
 479
 480         /* Each TFD can point to a maximum 20 Tx buffers */
 481         if (num_tbs >= IWL_NUM_OF_TBS) {
 482                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 483                           IWL_NUM_OF_TBS);
 484                 return -EINVAL;
 485         }
 486
 487         BUG_ON(addr & ~DMA_BIT_MASK(36));
 488         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 489                 IWL_ERR(priv, "Unaligned address = %llx\n",
 490                           (unsigned long long)addr);
 491
 492         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 493
 494         return 0;
 495 }
 496
 497 /*
 498  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 499  * given Tx queue, and enable the DMA channel used for that queue.
 500  *
 501  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 502  * channels supported in hardware.
 503  */
 504 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 505                          struct iwl_tx_queue *txq)
 506 {
 507         int ret;
 508         unsigned long flags;
 509         int txq_id = txq->q.id;
 510
 511         spin_lock_irqsave(&priv->lock, flags);
 512         ret = iwl_grab_nic_access(priv);
 513         if (ret) {
 514                 spin_unlock_irqrestore(&priv->lock, flags);
 515                 return ret;
 516         }
 517
 518         /* Circular buffer (TFD queue in DRAM) physical base address */
 519         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 520                              txq->q.dma_addr >> 8);
 521
 522         iwl_release_nic_access(priv);
 523         spin_unlock_irqrestore(&priv->lock, flags);
 524
 525         return 0;
 526 }
 527
 528
 529 /******************************************************************************
 530  *
 531  * Misc. internal state and helper functions
 532  *
 533  ******************************************************************************/
 534
 535 #define MAX_UCODE_BEACON_INTERVAL       4096
 536
 537 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 538 {
 539         u16 new_val = 0;
 540         u16 beacon_factor = 0;
 541
 542         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 543                                         / MAX_UCODE_BEACON_INTERVAL;
 544         new_val = beacon_val / beacon_factor;
 545
 546         if (!new_val)
 547                 new_val = MAX_UCODE_BEACON_INTERVAL;
 548
 549         return new_val;
 550 }
 551
 552 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 553 {
 554         u64 tsf;
 555         s32 interval_tm, rem;
 556         unsigned long flags;
 557         struct ieee80211_conf *conf = NULL;
 558         u16 beacon_int = 0;
 559
 560         conf = ieee80211_get_hw_conf(priv->hw);
 561
 562         spin_lock_irqsave(&priv->lock, flags);
 563         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 564         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 565
 566         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 567                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 568                 priv->rxon_timing.atim_window = 0;
 569         } else {
 570                 beacon_int = iwl_adjust_beacon_interval(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_error_recovery(struct iwl_priv *priv)
 970 {
 971         unsigned long flags;
 972
 973         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
 974                sizeof(priv->staging_rxon));
 975         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 976         iwlcore_commit_rxon(priv);
 977
 978         iwl_rxon_add_station(priv, priv->bssid, 1);
 979
 980         spin_lock_irqsave(&priv->lock, flags);
 981         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
 982         priv->error_recovering = 0;
 983         spin_unlock_irqrestore(&priv->lock, flags);
 984 }
 985
 986 static void iwl_irq_tasklet(struct iwl_priv *priv)
 987 {
 988         u32 inta, handled = 0;
 989         u32 inta_fh;
 990         unsigned long flags;
 991 #ifdef CONFIG_IWLWIFI_DEBUG
 992         u32 inta_mask;
 993 #endif
 994
 995         spin_lock_irqsave(&priv->lock, flags);
 996
 997         /* Ack/clear/reset pending uCode interrupts.
 998          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
 999          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1000         inta = iwl_read32(priv, CSR_INT);
1001         iwl_write32(priv, CSR_INT, inta);
1002
1003         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1004          * Any new interrupts that happen after this, either while we're
1005          * in this tasklet, or later, will show up in next ISR/tasklet. */
1006         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1007         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1008
1009 #ifdef CONFIG_IWLWIFI_DEBUG
1010         if (priv->debug_level & IWL_DL_ISR) {
1011                 /* just for debug */
1012                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1013                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1014                               inta, inta_mask, inta_fh);
1015         }
1016 #endif
1017
1018         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1019          * atomic, make sure that inta covers all the interrupts that
1020          * we've discovered, even if FH interrupt came in just after
1021          * reading CSR_INT. */
1022         if (inta_fh & CSR49_FH_INT_RX_MASK)
1023                 inta |= CSR_INT_BIT_FH_RX;
1024         if (inta_fh & CSR49_FH_INT_TX_MASK)
1025                 inta |= CSR_INT_BIT_FH_TX;
1026
1027         /* Now service all interrupt bits discovered above. */
1028         if (inta & CSR_INT_BIT_HW_ERR) {
1029                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
1030
1031                 /* Tell the device to stop sending interrupts */
1032                 iwl_disable_interrupts(priv);
1033
1034                 priv->isr_stats.hw++;
1035                 iwl_irq_handle_error(priv);
1036
1037                 handled |= CSR_INT_BIT_HW_ERR;
1038
1039                 spin_unlock_irqrestore(&priv->lock, flags);
1040
1041                 return;
1042         }
1043
1044 #ifdef CONFIG_IWLWIFI_DEBUG
1045         if (priv->debug_level & (IWL_DL_ISR)) {
1046                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1047                 if (inta & CSR_INT_BIT_SCD) {
1048                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1049                                       "the frame/frames.\n");
1050                         priv->isr_stats.sch++;
1051                 }
1052
1053                 /* Alive notification via Rx interrupt will do the real work */
1054                 if (inta & CSR_INT_BIT_ALIVE) {
1055                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1056                         priv->isr_stats.alive++;
1057                 }
1058         }
1059 #endif
1060         /* Safely ignore these bits for debug checks below */
1061         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1062
1063         /* HW RF KILL switch toggled */
1064         if (inta & CSR_INT_BIT_RF_KILL) {
1065                 int hw_rf_kill = 0;
1066                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1067                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1068                         hw_rf_kill = 1;
1069
1070                 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1071                                 hw_rf_kill ? "disable radio" : "enable radio");
1072
1073                 priv->isr_stats.rfkill++;
1074
1075                 /* driver only loads ucode once setting the interface up.
1076                  * the driver allows loading the ucode even if the radio
1077                  * is killed. Hence update the killswitch state here. The
1078                  * rfkill handler will care about restarting if needed.
1079                  */
1080                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1081                         if (hw_rf_kill)
1082                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1083                         else
1084                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1085                         queue_work(priv->workqueue, &priv->rf_kill);
1086                 }
1087
1088                 handled |= CSR_INT_BIT_RF_KILL;
1089         }
1090
1091         /* Chip got too hot and stopped itself */
1092         if (inta & CSR_INT_BIT_CT_KILL) {
1093                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1094                 priv->isr_stats.ctkill++;
1095                 handled |= CSR_INT_BIT_CT_KILL;
1096         }
1097
1098         /* Error detected by uCode */
1099         if (inta & CSR_INT_BIT_SW_ERR) {
1100                 IWL_ERR(priv, "Microcode SW error detected. "
1101                         " Restarting 0x%X.\n", inta);
1102                 priv->isr_stats.sw++;
1103                 priv->isr_stats.sw_err = inta;
1104                 iwl_irq_handle_error(priv);
1105                 handled |= CSR_INT_BIT_SW_ERR;
1106         }
1107
1108         /* uCode wakes up after power-down sleep */
1109         if (inta & CSR_INT_BIT_WAKEUP) {
1110                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1111                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1112                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1113                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1114                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1115                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1116                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1117                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1118
1119                 priv->isr_stats.wakeup++;
1120
1121                 handled |= CSR_INT_BIT_WAKEUP;
1122         }
1123
1124         /* All uCode command responses, including Tx command responses,
1125          * Rx "responses" (frame-received notification), and other
1126          * notifications from uCode come through here*/
1127         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1128                 iwl_rx_handle(priv);
1129                 priv->isr_stats.rx++;
1130                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1131         }
1132
1133         if (inta & CSR_INT_BIT_FH_TX) {
1134                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1135                 priv->isr_stats.tx++;
1136                 handled |= CSR_INT_BIT_FH_TX;
1137                 /* FH finished to write, send event */
1138                 priv->ucode_write_complete = 1;
1139                 wake_up_interruptible(&priv->wait_command_queue);
1140         }
1141
1142         if (inta & ~handled) {
1143                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1144                 priv->isr_stats.unhandled++;
1145         }
1146
1147         if (inta & ~CSR_INI_SET_MASK) {
1148                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1149                          inta & ~CSR_INI_SET_MASK);
1150                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1151         }
1152
1153         /* Re-enable all interrupts */
1154         /* only Re-enable if diabled by irq */
1155         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1156                 iwl_enable_interrupts(priv);
1157
1158 #ifdef CONFIG_IWLWIFI_DEBUG
1159         if (priv->debug_level & (IWL_DL_ISR)) {
1160                 inta = iwl_read32(priv, CSR_INT);
1161                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1162                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1163                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1164                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1165         }
1166 #endif
1167         spin_unlock_irqrestore(&priv->lock, flags);
1168 }
1169
1170
1171 /******************************************************************************
1172  *
1173  * uCode download functions
1174  *
1175  ******************************************************************************/
1176
1177 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1178 {
1179         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1180         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1181         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1182         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1183         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1184         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1185 }
1186
1187 static void iwl_nic_start(struct iwl_priv *priv)
1188 {
1189         /* Remove all resets to allow NIC to operate */
1190         iwl_write32(priv, CSR_RESET, 0);
1191 }
1192
1193
1194 /**
1195  * iwl_read_ucode - Read uCode images from disk file.
1196  *
1197  * Copy into buffers for card to fetch via bus-mastering
1198  */
1199 static int iwl_read_ucode(struct iwl_priv *priv)
1200 {
1201         struct iwl_ucode *ucode;
1202         int ret = -EINVAL, index;
1203         const struct firmware *ucode_raw;
1204         const char *name_pre = priv->cfg->fw_name_pre;
1205         const unsigned int api_max = priv->cfg->ucode_api_max;
1206         const unsigned int api_min = priv->cfg->ucode_api_min;
1207         char buf[25];
1208         u8 *src;
1209         size_t len;
1210         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1211
1212         /* Ask kernel firmware_class module to get the boot firmware off disk.
1213          * request_firmware() is synchronous, file is in memory on return. */
1214         for (index = api_max; index >= api_min; index--) {
1215                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1216                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1217                 if (ret < 0) {
1218                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
1219                                   buf, ret);
1220                         if (ret == -ENOENT)
1221                                 continue;
1222                         else
1223                                 goto error;
1224                 } else {
1225                         if (index < api_max)
1226                                 IWL_ERR(priv, "Loaded firmware %s, "
1227                                         "which is deprecated. "
1228                                         "Please use API v%u instead.\n",
1229                                           buf, api_max);
1230
1231                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1232                                        buf, ucode_raw->size);
1233                         break;
1234                 }
1235         }
1236
1237         if (ret < 0)
1238                 goto error;
1239
1240         /* Make sure that we got at least our header! */
1241         if (ucode_raw->size < sizeof(*ucode)) {
1242                 IWL_ERR(priv, "File size way too small!\n");
1243                 ret = -EINVAL;
1244                 goto err_release;
1245         }
1246
1247         /* Data from ucode file:  header followed by uCode images */
1248         ucode = (void *)ucode_raw->data;
1249
1250         priv->ucode_ver = le32_to_cpu(ucode->ver);
1251         api_ver = IWL_UCODE_API(priv->ucode_ver);
1252         inst_size = le32_to_cpu(ucode->inst_size);
1253         data_size = le32_to_cpu(ucode->data_size);
1254         init_size = le32_to_cpu(ucode->init_size);
1255         init_data_size = le32_to_cpu(ucode->init_data_size);
1256         boot_size = le32_to_cpu(ucode->boot_size);
1257
1258         /* api_ver should match the api version forming part of the
1259          * firmware filename ... but we don't check for that and only rely
1260          * on the API version read from firmware header from here on forward */
1261
1262         if (api_ver < api_min || api_ver > api_max) {
1263                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1264                           "Driver supports v%u, firmware is v%u.\n",
1265                           api_max, api_ver);
1266                 priv->ucode_ver = 0;
1267                 ret = -EINVAL;
1268                 goto err_release;
1269         }
1270         if (api_ver != api_max)
1271                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1272                           "got v%u. New firmware can be obtained "
1273                           "from http://www.intellinuxwireless.org.\n",
1274                           api_max, api_ver);
1275
1276         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1277                IWL_UCODE_MAJOR(priv->ucode_ver),
1278                IWL_UCODE_MINOR(priv->ucode_ver),
1279                IWL_UCODE_API(priv->ucode_ver),
1280                IWL_UCODE_SERIAL(priv->ucode_ver));
1281
1282         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1283                        priv->ucode_ver);
1284         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1285                        inst_size);
1286         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1287                        data_size);
1288         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1289                        init_size);
1290         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1291                        init_data_size);
1292         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1293                        boot_size);
1294
1295         /* Verify size of file vs. image size info in file's header */
1296         if (ucode_raw->size < sizeof(*ucode) +
1297                 inst_size + data_size + init_size +
1298                 init_data_size + boot_size) {
1299
1300                 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1301                                (int)ucode_raw->size);
1302                 ret = -EINVAL;
1303                 goto err_release;
1304         }
1305
1306         /* Verify that uCode images will fit in card's SRAM */
1307         if (inst_size > priv->hw_params.max_inst_size) {
1308                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1309                                inst_size);
1310                 ret = -EINVAL;
1311                 goto err_release;
1312         }
1313
1314         if (data_size > priv->hw_params.max_data_size) {
1315                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1316                                 data_size);
1317                 ret = -EINVAL;
1318                 goto err_release;
1319         }
1320         if (init_size > priv->hw_params.max_inst_size) {
1321                 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1322                         init_size);
1323                 ret = -EINVAL;
1324                 goto err_release;
1325         }
1326         if (init_data_size > priv->hw_params.max_data_size) {
1327                 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1328                       init_data_size);
1329                 ret = -EINVAL;
1330                 goto err_release;
1331         }
1332         if (boot_size > priv->hw_params.max_bsm_size) {
1333                 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1334                         boot_size);
1335                 ret = -EINVAL;
1336                 goto err_release;
1337         }
1338
1339         /* Allocate ucode buffers for card's bus-master loading ... */
1340
1341         /* Runtime instructions and 2 copies of data:
1342          * 1) unmodified from disk
1343          * 2) backup cache for save/restore during power-downs */
1344         priv->ucode_code.len = inst_size;
1345         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1346
1347         priv->ucode_data.len = data_size;
1348         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1349
1350         priv->ucode_data_backup.len = data_size;
1351         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1352
1353         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1354             !priv->ucode_data_backup.v_addr)
1355                 goto err_pci_alloc;
1356
1357         /* Initialization instructions and data */
1358         if (init_size && init_data_size) {
1359                 priv->ucode_init.len = init_size;
1360                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1361
1362                 priv->ucode_init_data.len = init_data_size;
1363                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1364
1365                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1366                         goto err_pci_alloc;
1367         }
1368
1369         /* Bootstrap (instructions only, no data) */
1370         if (boot_size) {
1371                 priv->ucode_boot.len = boot_size;
1372                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1373
1374                 if (!priv->ucode_boot.v_addr)
1375                         goto err_pci_alloc;
1376         }
1377
1378         /* Copy images into buffers for card's bus-master reads ... */
1379
1380         /* Runtime instructions (first block of data in file) */
1381         src = &ucode->data[0];
1382         len = priv->ucode_code.len;
1383         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1384         memcpy(priv->ucode_code.v_addr, src, len);
1385         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1386                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1387
1388         /* Runtime data (2nd block)
1389          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1390         src = &ucode->data[inst_size];
1391         len = priv->ucode_data.len;
1392         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1393         memcpy(priv->ucode_data.v_addr, src, len);
1394         memcpy(priv->ucode_data_backup.v_addr, src, len);
1395
1396         /* Initialization instructions (3rd block) */
1397         if (init_size) {
1398                 src = &ucode->data[inst_size + data_size];
1399                 len = priv->ucode_init.len;
1400                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1401                                 len);
1402                 memcpy(priv->ucode_init.v_addr, src, len);
1403         }
1404
1405         /* Initialization data (4th block) */
1406         if (init_data_size) {
1407                 src = &ucode->data[inst_size + data_size + init_size];
1408                 len = priv->ucode_init_data.len;
1409                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1410                                len);
1411                 memcpy(priv->ucode_init_data.v_addr, src, len);
1412         }
1413
1414         /* Bootstrap instructions (5th block) */
1415         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1416         len = priv->ucode_boot.len;
1417         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1418         memcpy(priv->ucode_boot.v_addr, src, len);
1419
1420         /* We have our copies now, allow OS release its copies */
1421         release_firmware(ucode_raw);
1422         return 0;
1423
1424  err_pci_alloc:
1425         IWL_ERR(priv, "failed to allocate pci memory\n");
1426         ret = -ENOMEM;
1427         iwl_dealloc_ucode_pci(priv);
1428
1429  err_release:
1430         release_firmware(ucode_raw);
1431
1432  error:
1433         return ret;
1434 }
1435
1436 /**
1437  * iwl_alive_start - called after REPLY_ALIVE notification received
1438  *                   from protocol/runtime uCode (initialization uCode's
1439  *                   Alive gets handled by iwl_init_alive_start()).
1440  */
1441 static void iwl_alive_start(struct iwl_priv *priv)
1442 {
1443         int ret = 0;
1444
1445         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1446
1447         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1448                 /* We had an error bringing up the hardware, so take it
1449                  * all the way back down so we can try again */
1450                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1451                 goto restart;
1452         }
1453
1454         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1455          * This is a paranoid check, because we would not have gotten the
1456          * "runtime" alive if code weren't properly loaded.  */
1457         if (iwl_verify_ucode(priv)) {
1458                 /* Runtime instruction load was bad;
1459                  * take it all the way back down so we can try again */
1460                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1461                 goto restart;
1462         }
1463
1464         priv->cfg->ops->smgmt->clear_station_table(priv);
1465         ret = priv->cfg->ops->lib->alive_notify(priv);
1466         if (ret) {
1467                 IWL_WARN(priv,
1468                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
1469                 goto restart;
1470         }
1471
1472         /* After the ALIVE response, we can send host commands to the uCode */
1473         set_bit(STATUS_ALIVE, &priv->status);
1474
1475         if (iwl_is_rfkill(priv))
1476                 return;
1477
1478         ieee80211_wake_queues(priv->hw);
1479
1480         priv->active_rate = priv->rates_mask;
1481         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1482
1483         if (iwl_is_associated(priv)) {
1484                 struct iwl_rxon_cmd *active_rxon =
1485                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1486                 /* apply any changes in staging */
1487                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1488                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1489         } else {
1490                 /* Initialize our rx_config data */
1491                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1492
1493                 if (priv->cfg->ops->hcmd->set_rxon_chain)
1494                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
1495
1496                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1497         }
1498
1499         /* Configure Bluetooth device coexistence support */
1500         iwl_send_bt_config(priv);
1501
1502         iwl_reset_run_time_calib(priv);
1503
1504         /* Configure the adapter for unassociated operation */
1505         iwlcore_commit_rxon(priv);
1506
1507         /* At this point, the NIC is initialized and operational */
1508         iwl_rf_kill_ct_config(priv);
1509
1510         iwl_leds_register(priv);
1511
1512         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1513         set_bit(STATUS_READY, &priv->status);
1514         wake_up_interruptible(&priv->wait_command_queue);
1515
1516         if (priv->error_recovering)
1517                 iwl_error_recovery(priv);
1518
1519         iwl_power_update_mode(priv, 1);
1520
1521         /* reassociate for ADHOC mode */
1522         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1523                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1524                                                                 priv->vif);
1525                 if (beacon)
1526                         iwl_mac_beacon_update(priv->hw, beacon);
1527         }
1528
1529
1530         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1531                 iwl_set_mode(priv, priv->iw_mode);
1532
1533         return;
1534
1535  restart:
1536         queue_work(priv->workqueue, &priv->restart);
1537 }
1538
1539 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1540
1541 static void __iwl_down(struct iwl_priv *priv)
1542 {
1543         unsigned long flags;
1544         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1545
1546         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1547
1548         if (!exit_pending)
1549                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1550
1551         iwl_leds_unregister(priv);
1552
1553         priv->cfg->ops->smgmt->clear_station_table(priv);
1554
1555         /* Unblock any waiting calls */
1556         wake_up_interruptible_all(&priv->wait_command_queue);
1557
1558         /* Wipe out the EXIT_PENDING status bit if we are not actually
1559          * exiting the module */
1560         if (!exit_pending)
1561                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1562
1563         /* stop and reset the on-board processor */
1564         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1565
1566         /* tell the device to stop sending interrupts */
1567         spin_lock_irqsave(&priv->lock, flags);
1568         iwl_disable_interrupts(priv);
1569         spin_unlock_irqrestore(&priv->lock, flags);
1570         iwl_synchronize_irq(priv);
1571
1572         if (priv->mac80211_registered)
1573                 ieee80211_stop_queues(priv->hw);
1574
1575         /* If we have not previously called iwl_init() then
1576          * clear all bits but the RF Kill bits and return */
1577         if (!iwl_is_init(priv)) {
1578                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1579                                         STATUS_RF_KILL_HW |
1580                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1581                                         STATUS_RF_KILL_SW |
1582                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1583                                         STATUS_GEO_CONFIGURED |
1584                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1585                                         STATUS_EXIT_PENDING;
1586                 goto exit;
1587         }
1588
1589         /* ...otherwise clear out all the status bits but the RF Kill
1590          * bits and continue taking the NIC down. */
1591         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1592                                 STATUS_RF_KILL_HW |
1593                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1594                                 STATUS_RF_KILL_SW |
1595                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1596                                 STATUS_GEO_CONFIGURED |
1597                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1598                                 STATUS_FW_ERROR |
1599                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1600                                 STATUS_EXIT_PENDING;
1601
1602         spin_lock_irqsave(&priv->lock, flags);
1603         iwl_clear_bit(priv, CSR_GP_CNTRL,
1604                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1605         spin_unlock_irqrestore(&priv->lock, flags);
1606
1607         iwl_txq_ctx_stop(priv);
1608         iwl_rxq_stop(priv);
1609
1610         spin_lock_irqsave(&priv->lock, flags);
1611         if (!iwl_grab_nic_access(priv)) {
1612                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1613                                          APMG_CLK_VAL_DMA_CLK_RQT);
1614                 iwl_release_nic_access(priv);
1615         }
1616         spin_unlock_irqrestore(&priv->lock, flags);
1617
1618         udelay(5);
1619
1620         /* FIXME: apm_ops.suspend(priv) */
1621         if (exit_pending)
1622                 priv->cfg->ops->lib->apm_ops.stop(priv);
1623         else
1624                 priv->cfg->ops->lib->apm_ops.reset(priv);
1625  exit:
1626         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1627
1628         if (priv->ibss_beacon)
1629                 dev_kfree_skb(priv->ibss_beacon);
1630         priv->ibss_beacon = NULL;
1631
1632         /* clear out any free frames */
1633         iwl_clear_free_frames(priv);
1634 }
1635
1636 static void iwl_down(struct iwl_priv *priv)
1637 {
1638         mutex_lock(&priv->mutex);
1639         __iwl_down(priv);
1640         mutex_unlock(&priv->mutex);
1641
1642         iwl_cancel_deferred_work(priv);
1643 }
1644
1645 #define MAX_HW_RESTARTS 5
1646
1647 static int __iwl_up(struct iwl_priv *priv)
1648 {
1649         int i;
1650         int ret;
1651
1652         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1653                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1654                 return -EIO;
1655         }
1656
1657         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1658                 IWL_ERR(priv, "ucode not available for device bringup\n");
1659                 return -EIO;
1660         }
1661
1662         /* If platform's RF_KILL switch is NOT set to KILL */
1663         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1664                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1665         else
1666                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1667
1668         if (iwl_is_rfkill(priv)) {
1669                 iwl_enable_interrupts(priv);
1670                 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1671                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1672                 return 0;
1673         }
1674
1675         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1676
1677         ret = iwl_hw_nic_init(priv);
1678         if (ret) {
1679                 IWL_ERR(priv, "Unable to init nic\n");
1680                 return ret;
1681         }
1682
1683         /* make sure rfkill handshake bits are cleared */
1684         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1685         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1686                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1687
1688         /* clear (again), then enable host interrupts */
1689         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1690         iwl_enable_interrupts(priv);
1691
1692         /* really make sure rfkill handshake bits are cleared */
1693         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1694         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1695
1696         /* Copy original ucode data image from disk into backup cache.
1697          * This will be used to initialize the on-board processor's
1698          * data SRAM for a clean start when the runtime program first loads. */
1699         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1700                priv->ucode_data.len);
1701
1702         for (i = 0; i < MAX_HW_RESTARTS; i++) {
1703
1704                 priv->cfg->ops->smgmt->clear_station_table(priv);
1705
1706                 /* load bootstrap state machine,
1707                  * load bootstrap program into processor's memory,
1708                  * prepare to load the "initialize" uCode */
1709                 ret = priv->cfg->ops->lib->load_ucode(priv);
1710
1711                 if (ret) {
1712                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1713                                 ret);
1714                         continue;
1715                 }
1716
1717                 /* Clear out the uCode error bit if it is set */
1718                 clear_bit(STATUS_FW_ERROR, &priv->status);
1719
1720                 /* start card; "initialize" will load runtime ucode */
1721                 iwl_nic_start(priv);
1722
1723                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1724
1725                 return 0;
1726         }
1727
1728         set_bit(STATUS_EXIT_PENDING, &priv->status);
1729         __iwl_down(priv);
1730         clear_bit(STATUS_EXIT_PENDING, &priv->status);
1731
1732         /* tried to restart and config the device for as long as our
1733          * patience could withstand */
1734         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1735         return -EIO;
1736 }
1737
1738
1739 /*****************************************************************************
1740  *
1741  * Workqueue callbacks
1742  *
1743  *****************************************************************************/
1744
1745 static void iwl_bg_init_alive_start(struct work_struct *data)
1746 {
1747         struct iwl_priv *priv =
1748             container_of(data, struct iwl_priv, init_alive_start.work);
1749
1750         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1751                 return;
1752
1753         mutex_lock(&priv->mutex);
1754         priv->cfg->ops->lib->init_alive_start(priv);
1755         mutex_unlock(&priv->mutex);
1756 }
1757
1758 static void iwl_bg_alive_start(struct work_struct *data)
1759 {
1760         struct iwl_priv *priv =
1761             container_of(data, struct iwl_priv, alive_start.work);
1762
1763         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1764                 return;
1765
1766         mutex_lock(&priv->mutex);
1767         iwl_alive_start(priv);
1768         mutex_unlock(&priv->mutex);
1769 }
1770
1771 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1772 {
1773         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1774                         run_time_calib_work);
1775
1776         mutex_lock(&priv->mutex);
1777
1778         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1779             test_bit(STATUS_SCANNING, &priv->status)) {
1780                 mutex_unlock(&priv->mutex);
1781                 return;
1782         }
1783
1784         if (priv->start_calib) {
1785                 iwl_chain_noise_calibration(priv, &priv->statistics);
1786
1787                 iwl_sensitivity_calibration(priv, &priv->statistics);
1788         }
1789
1790         mutex_unlock(&priv->mutex);
1791         return;
1792 }
1793
1794 static void iwl_bg_up(struct work_struct *data)
1795 {
1796         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
1797
1798         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1799                 return;
1800
1801         mutex_lock(&priv->mutex);
1802         __iwl_up(priv);
1803         mutex_unlock(&priv->mutex);
1804         iwl_rfkill_set_hw_state(priv);
1805 }
1806
1807 static void iwl_bg_restart(struct work_struct *data)
1808 {
1809         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1810
1811         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1812                 return;
1813
1814         iwl_down(priv);
1815         queue_work(priv->workqueue, &priv->up);
1816 }
1817
1818 static void iwl_bg_rx_replenish(struct work_struct *data)
1819 {
1820         struct iwl_priv *priv =
1821             container_of(data, struct iwl_priv, rx_replenish);
1822
1823         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1824                 return;
1825
1826         mutex_lock(&priv->mutex);
1827         iwl_rx_replenish(priv);
1828         mutex_unlock(&priv->mutex);
1829 }
1830
1831 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1832
1833 void iwl_post_associate(struct iwl_priv *priv)
1834 {
1835         struct ieee80211_conf *conf = NULL;
1836         int ret = 0;
1837         unsigned long flags;
1838
1839         if (priv->iw_mode == NL80211_IFTYPE_AP) {
1840                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
1841                 return;
1842         }
1843
1844         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
1845                         priv->assoc_id, priv->active_rxon.bssid_addr);
1846
1847
1848         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1849                 return;
1850
1851
1852         if (!priv->vif || !priv->is_open)
1853                 return;
1854
1855         iwl_power_cancel_timeout(priv);
1856         iwl_scan_cancel_timeout(priv, 200);
1857
1858         conf = ieee80211_get_hw_conf(priv->hw);
1859
1860         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1861         iwlcore_commit_rxon(priv);
1862
1863         iwl_setup_rxon_timing(priv);
1864         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
1865                               sizeof(priv->rxon_timing), &priv->rxon_timing);
1866         if (ret)
1867                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
1868                             "Attempting to continue.\n");
1869
1870         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1871
1872         iwl_set_rxon_ht(priv, &priv->current_ht_config);
1873
1874         if (priv->cfg->ops->hcmd->set_rxon_chain)
1875                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1876
1877         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
1878
1879         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
1880                         priv->assoc_id, priv->beacon_int);
1881
1882         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1883                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1884         else
1885                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1886
1887         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
1888                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1889                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1890                 else
1891                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1892
1893                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1894                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1895
1896         }
1897
1898         iwlcore_commit_rxon(priv);
1899
1900         switch (priv->iw_mode) {
1901         case NL80211_IFTYPE_STATION:
1902                 break;
1903
1904         case NL80211_IFTYPE_ADHOC:
1905
1906                 /* assume default assoc id */
1907                 priv->assoc_id = 1;
1908
1909                 iwl_rxon_add_station(priv, priv->bssid, 0);
1910                 iwl_send_beacon_cmd(priv);
1911
1912                 break;
1913
1914         default:
1915                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
1916                           __func__, priv->iw_mode);
1917                 break;
1918         }
1919
1920         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1921                 priv->assoc_station_added = 1;
1922
1923         spin_lock_irqsave(&priv->lock, flags);
1924         iwl_activate_qos(priv, 0);
1925         spin_unlock_irqrestore(&priv->lock, flags);
1926
1927         /* the chain noise calibration will enabled PM upon completion
1928          * If chain noise has already been run, then we need to enable
1929          * power management here */
1930         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
1931                 iwl_power_enable_management(priv);
1932
1933         /* Enable Rx differential gain and sensitivity calibrations */
1934         iwl_chain_noise_reset(priv);
1935         priv->start_calib = 1;
1936
1937 }
1938
1939 /*****************************************************************************
1940  *
1941  * mac80211 entry point functions
1942  *
1943  *****************************************************************************/
1944
1945 #define UCODE_READY_TIMEOUT     (4 * HZ)
1946
1947 static int iwl_mac_start(struct ieee80211_hw *hw)
1948 {
1949         struct iwl_priv *priv = hw->priv;
1950         int ret;
1951
1952         IWL_DEBUG_MAC80211(priv, "enter\n");
1953
1954         /* we should be verifying the device is ready to be opened */
1955         mutex_lock(&priv->mutex);
1956
1957         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
1958         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
1959          * ucode filename and max sizes are card-specific. */
1960
1961         if (!priv->ucode_code.len) {
1962                 ret = iwl_read_ucode(priv);
1963                 if (ret) {
1964                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
1965                         mutex_unlock(&priv->mutex);
1966                         return ret;
1967                 }
1968         }
1969
1970         ret = __iwl_up(priv);
1971
1972         mutex_unlock(&priv->mutex);
1973
1974         iwl_rfkill_set_hw_state(priv);
1975
1976         if (ret)
1977                 return ret;
1978
1979         if (iwl_is_rfkill(priv))
1980                 goto out;
1981
1982         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1983
1984         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
1985          * mac80211 will not be run successfully. */
1986         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
1987                         test_bit(STATUS_READY, &priv->status),
1988                         UCODE_READY_TIMEOUT);
1989         if (!ret) {
1990                 if (!test_bit(STATUS_READY, &priv->status)) {
1991                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
1992                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
1993                         return -ETIMEDOUT;
1994                 }
1995         }
1996
1997 out:
1998         priv->is_open = 1;
1999         IWL_DEBUG_MAC80211(priv, "leave\n");
2000         return 0;
2001 }
2002
2003 static void iwl_mac_stop(struct ieee80211_hw *hw)
2004 {
2005         struct iwl_priv *priv = hw->priv;
2006
2007         IWL_DEBUG_MAC80211(priv, "enter\n");
2008
2009         if (!priv->is_open) {
2010                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
2011                 return;
2012         }
2013
2014         priv->is_open = 0;
2015
2016         if (iwl_is_ready_rf(priv)) {
2017                 /* stop mac, cancel any scan request and clear
2018                  * RXON_FILTER_ASSOC_MSK BIT
2019                  */
2020                 mutex_lock(&priv->mutex);
2021                 iwl_scan_cancel_timeout(priv, 100);
2022                 mutex_unlock(&priv->mutex);
2023         }
2024
2025         iwl_down(priv);
2026
2027         flush_workqueue(priv->workqueue);
2028
2029         /* enable interrupts again in order to receive rfkill changes */
2030         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2031         iwl_enable_interrupts(priv);
2032
2033         IWL_DEBUG_MAC80211(priv, "leave\n");
2034 }
2035
2036 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2037 {
2038         struct iwl_priv *priv = hw->priv;
2039
2040         IWL_DEBUG_MACDUMP(priv, "enter\n");
2041
2042         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2043                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2044
2045         if (iwl_tx_skb(priv, skb))
2046                 dev_kfree_skb_any(skb);
2047
2048         IWL_DEBUG_MACDUMP(priv, "leave\n");
2049         return NETDEV_TX_OK;
2050 }
2051
2052 void iwl_config_ap(struct iwl_priv *priv)
2053 {
2054         int ret = 0;
2055         unsigned long flags;
2056
2057         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2058                 return;
2059
2060         /* The following should be done only at AP bring up */
2061         if (!iwl_is_associated(priv)) {
2062
2063                 /* RXON - unassoc (to set timing command) */
2064                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2065                 iwlcore_commit_rxon(priv);
2066
2067                 /* RXON Timing */
2068                 iwl_setup_rxon_timing(priv);
2069                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2070                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2071                 if (ret)
2072                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2073                                         "Attempting to continue.\n");
2074
2075                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2076                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2077
2078                 /* FIXME: what should be the assoc_id for AP? */
2079                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2080                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2081                         priv->staging_rxon.flags |=
2082                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2083                 else
2084                         priv->staging_rxon.flags &=
2085                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2086
2087                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2088                         if (priv->assoc_capability &
2089                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2090                                 priv->staging_rxon.flags |=
2091                                         RXON_FLG_SHORT_SLOT_MSK;
2092                         else
2093                                 priv->staging_rxon.flags &=
2094                                         ~RXON_FLG_SHORT_SLOT_MSK;
2095
2096                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2097                                 priv->staging_rxon.flags &=
2098                                         ~RXON_FLG_SHORT_SLOT_MSK;
2099                 }
2100                 /* restore RXON assoc */
2101                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2102                 iwlcore_commit_rxon(priv);
2103                 spin_lock_irqsave(&priv->lock, flags);
2104                 iwl_activate_qos(priv, 1);
2105                 spin_unlock_irqrestore(&priv->lock, flags);
2106                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2107         }
2108         iwl_send_beacon_cmd(priv);
2109
2110         /* FIXME - we need to add code here to detect a totally new
2111          * configuration, reset the AP, unassoc, rxon timing, assoc,
2112          * clear sta table, add BCAST sta... */
2113 }
2114
2115 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2116                         struct ieee80211_key_conf *keyconf, const u8 *addr,
2117                         u32 iv32, u16 *phase1key)
2118 {
2119
2120         struct iwl_priv *priv = hw->priv;
2121         IWL_DEBUG_MAC80211(priv, "enter\n");
2122
2123         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2124
2125         IWL_DEBUG_MAC80211(priv, "leave\n");
2126 }
2127
2128 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2129                            struct ieee80211_vif *vif,
2130                            struct ieee80211_sta *sta,
2131                            struct ieee80211_key_conf *key)
2132 {
2133         struct iwl_priv *priv = hw->priv;
2134         const u8 *addr;
2135         int ret;
2136         u8 sta_id;
2137         bool is_default_wep_key = false;
2138
2139         IWL_DEBUG_MAC80211(priv, "enter\n");
2140
2141         if (priv->hw_params.sw_crypto) {
2142                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2143                 return -EOPNOTSUPP;
2144         }
2145         addr = sta ? sta->addr : iwl_bcast_addr;
2146         sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
2147         if (sta_id == IWL_INVALID_STATION) {
2148                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2149                                    addr);
2150                 return -EINVAL;
2151
2152         }
2153
2154         mutex_lock(&priv->mutex);
2155         iwl_scan_cancel_timeout(priv, 100);
2156         mutex_unlock(&priv->mutex);
2157
2158         /* If we are getting WEP group key and we didn't receive any key mapping
2159          * so far, we are in legacy wep mode (group key only), otherwise we are
2160          * in 1X mode.
2161          * In legacy wep mode, we use another host command to the uCode */
2162         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2163                 priv->iw_mode != NL80211_IFTYPE_AP) {
2164                 if (cmd == SET_KEY)
2165                         is_default_wep_key = !priv->key_mapping_key;
2166                 else
2167                         is_default_wep_key =
2168                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2169         }
2170
2171         switch (cmd) {
2172         case SET_KEY:
2173                 if (is_default_wep_key)
2174                         ret = iwl_set_default_wep_key(priv, key);
2175                 else
2176                         ret = iwl_set_dynamic_key(priv, key, sta_id);
2177
2178                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2179                 break;
2180         case DISABLE_KEY:
2181                 if (is_default_wep_key)
2182                         ret = iwl_remove_default_wep_key(priv, key);
2183                 else
2184                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
2185
2186                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2187                 break;
2188         default:
2189                 ret = -EINVAL;
2190         }
2191
2192         IWL_DEBUG_MAC80211(priv, "leave\n");
2193
2194         return ret;
2195 }
2196
2197 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2198                              enum ieee80211_ampdu_mlme_action action,
2199                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2200 {
2201         struct iwl_priv *priv = hw->priv;
2202         int ret;
2203
2204         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2205                      sta->addr, tid);
2206
2207         if (!(priv->cfg->sku & IWL_SKU_N))
2208                 return -EACCES;
2209
2210         switch (action) {
2211         case IEEE80211_AMPDU_RX_START:
2212                 IWL_DEBUG_HT(priv, "start Rx\n");
2213                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2214         case IEEE80211_AMPDU_RX_STOP:
2215                 IWL_DEBUG_HT(priv, "stop Rx\n");
2216                 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2217                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2218                         return 0;
2219                 else
2220                         return ret;
2221         case IEEE80211_AMPDU_TX_START:
2222                 IWL_DEBUG_HT(priv, "start Tx\n");
2223                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2224         case IEEE80211_AMPDU_TX_STOP:
2225                 IWL_DEBUG_HT(priv, "stop Tx\n");
2226                 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2227                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2228                         return 0;
2229                 else
2230                         return ret;
2231         default:
2232                 IWL_DEBUG_HT(priv, "unknown\n");
2233                 return -EINVAL;
2234                 break;
2235         }
2236         return 0;
2237 }
2238
2239 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2240                              struct ieee80211_low_level_stats *stats)
2241 {
2242         struct iwl_priv *priv = hw->priv;
2243
2244         priv = hw->priv;
2245         IWL_DEBUG_MAC80211(priv, "enter\n");
2246         IWL_DEBUG_MAC80211(priv, "leave\n");
2247
2248         return 0;
2249 }
2250
2251 /*****************************************************************************
2252  *
2253  * sysfs attributes
2254  *
2255  *****************************************************************************/
2256
2257 #ifdef CONFIG_IWLWIFI_DEBUG
2258
2259 /*
2260  * The following adds a new attribute to the sysfs representation
2261  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2262  * used for controlling the debug level.
2263  *
2264  * See the level definitions in iwl for details.
2265  */
2266
2267 static ssize_t show_debug_level(struct device *d,
2268                                 struct device_attribute *attr, char *buf)
2269 {
2270         struct iwl_priv *priv = d->driver_data;
2271
2272         return sprintf(buf, "0x%08X\n", priv->debug_level);
2273 }
2274 static ssize_t store_debug_level(struct device *d,
2275                                 struct device_attribute *attr,
2276                                  const char *buf, size_t count)
2277 {
2278         struct iwl_priv *priv = d->driver_data;
2279         unsigned long val;
2280         int ret;
2281
2282         ret = strict_strtoul(buf, 0, &val);
2283         if (ret)
2284                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2285         else
2286                 priv->debug_level = val;
2287
2288         return strnlen(buf, count);
2289 }
2290
2291 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2292                         show_debug_level, store_debug_level);
2293
2294
2295 #endif /* CONFIG_IWLWIFI_DEBUG */
2296
2297
2298 static ssize_t show_version(struct device *d,
2299                                 struct device_attribute *attr, char *buf)
2300 {
2301         struct iwl_priv *priv = d->driver_data;
2302         struct iwl_alive_resp *palive = &priv->card_alive;
2303         ssize_t pos = 0;
2304         u16 eeprom_ver;
2305
2306         if (palive->is_valid)
2307                 pos += sprintf(buf + pos,
2308                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2309                                 "fw type: 0x%01X 0x%01X\n",
2310                                 palive->ucode_major, palive->ucode_minor,
2311                                 palive->sw_rev[0], palive->sw_rev[1],
2312                                 palive->ver_type, palive->ver_subtype);
2313         else
2314                 pos += sprintf(buf + pos, "fw not loaded\n");
2315
2316         if (priv->eeprom) {
2317                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
2318                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
2319                                  eeprom_ver);
2320         } else {
2321                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
2322         }
2323
2324         return pos;
2325 }
2326
2327 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
2328
2329 static ssize_t show_temperature(struct device *d,
2330                                 struct device_attribute *attr, char *buf)
2331 {
2332         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2333
2334         if (!iwl_is_alive(priv))
2335                 return -EAGAIN;
2336
2337         return sprintf(buf, "%d\n", priv->temperature);
2338 }
2339
2340 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2341
2342 static ssize_t show_tx_power(struct device *d,
2343                              struct device_attribute *attr, char *buf)
2344 {
2345         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2346
2347         if (!iwl_is_ready_rf(priv))
2348                 return sprintf(buf, "off\n");
2349         else
2350                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2351 }
2352
2353 static ssize_t store_tx_power(struct device *d,
2354                               struct device_attribute *attr,
2355                               const char *buf, size_t count)
2356 {
2357         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2358         unsigned long val;
2359         int ret;
2360
2361         ret = strict_strtoul(buf, 10, &val);
2362         if (ret)
2363                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2364         else
2365                 iwl_set_tx_power(priv, val, false);
2366
2367         return count;
2368 }
2369
2370 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2371
2372 static ssize_t show_flags(struct device *d,
2373                           struct device_attribute *attr, char *buf)
2374 {
2375         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2376
2377         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2378 }
2379
2380 static ssize_t store_flags(struct device *d,
2381                            struct device_attribute *attr,
2382                            const char *buf, size_t count)
2383 {
2384         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2385         unsigned long val;
2386         u32 flags;
2387         int ret = strict_strtoul(buf, 0, &val);
2388         if (ret)
2389                 return ret;
2390         flags = (u32)val;
2391
2392         mutex_lock(&priv->mutex);
2393         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
2394                 /* Cancel any currently running scans... */
2395                 if (iwl_scan_cancel_timeout(priv, 100))
2396                         IWL_WARN(priv, "Could not cancel scan.\n");
2397                 else {
2398                         IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
2399                         priv->staging_rxon.flags = cpu_to_le32(flags);
2400                         iwlcore_commit_rxon(priv);
2401                 }
2402         }
2403         mutex_unlock(&priv->mutex);
2404
2405         return count;
2406 }
2407
2408 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
2409
2410 static ssize_t show_filter_flags(struct device *d,
2411                                  struct device_attribute *attr, char *buf)
2412 {
2413         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2414
2415         return sprintf(buf, "0x%04X\n",
2416                 le32_to_cpu(priv->active_rxon.filter_flags));
2417 }
2418
2419 static ssize_t store_filter_flags(struct device *d,
2420                                   struct device_attribute *attr,
2421                                   const char *buf, size_t count)
2422 {
2423         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2424         unsigned long val;
2425         u32 filter_flags;
2426         int ret = strict_strtoul(buf, 0, &val);
2427         if (ret)
2428                 return ret;
2429         filter_flags = (u32)val;
2430
2431         mutex_lock(&priv->mutex);
2432         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
2433                 /* Cancel any currently running scans... */
2434                 if (iwl_scan_cancel_timeout(priv, 100))
2435                         IWL_WARN(priv, "Could not cancel scan.\n");
2436                 else {
2437                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
2438                                        "0x%04X\n", filter_flags);
2439                         priv->staging_rxon.filter_flags =
2440                                 cpu_to_le32(filter_flags);
2441                         iwlcore_commit_rxon(priv);
2442                 }
2443         }
2444         mutex_unlock(&priv->mutex);
2445
2446         return count;
2447 }
2448
2449 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
2450                    store_filter_flags);
2451
2452 static ssize_t store_power_level(struct device *d,
2453                                  struct device_attribute *attr,
2454                                  const char *buf, size_t count)
2455 {
2456         struct iwl_priv *priv = dev_get_drvdata(d);
2457         int ret;
2458         unsigned long mode;
2459
2460
2461         mutex_lock(&priv->mutex);
2462
2463         ret = strict_strtoul(buf, 10, &mode);
2464         if (ret)
2465                 goto out;
2466
2467         ret = iwl_power_set_user_mode(priv, mode);
2468         if (ret) {
2469                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
2470                 goto out;
2471         }
2472         ret = count;
2473
2474  out:
2475         mutex_unlock(&priv->mutex);
2476         return ret;
2477 }
2478
2479 static ssize_t show_power_level(struct device *d,
2480                                 struct device_attribute *attr, char *buf)
2481 {
2482         struct iwl_priv *priv = dev_get_drvdata(d);
2483         int mode = priv->power_data.user_power_setting;
2484         int system = priv->power_data.system_power_setting;
2485         int level = priv->power_data.power_mode;
2486         char *p = buf;
2487
2488         switch (system) {
2489         case IWL_POWER_SYS_AUTO:
2490                 p += sprintf(p, "SYSTEM:auto");
2491                 break;
2492         case IWL_POWER_SYS_AC:
2493                 p += sprintf(p, "SYSTEM:ac");
2494                 break;
2495         case IWL_POWER_SYS_BATTERY:
2496                 p += sprintf(p, "SYSTEM:battery");
2497                 break;
2498         }
2499
2500         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
2501                         "fixed" : "auto");
2502         p += sprintf(p, "\tINDEX:%d", level);
2503         p += sprintf(p, "\n");
2504         return p - buf + 1;
2505 }
2506
2507 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
2508                    store_power_level);
2509
2510
2511 static ssize_t show_statistics(struct device *d,
2512                                struct device_attribute *attr, char *buf)
2513 {
2514         struct iwl_priv *priv = dev_get_drvdata(d);
2515         u32 size = sizeof(struct iwl_notif_statistics);
2516         u32 len = 0, ofs = 0;
2517         u8 *data = (u8 *)&priv->statistics;
2518         int rc = 0;
2519
2520         if (!iwl_is_alive(priv))
2521                 return -EAGAIN;
2522
2523         mutex_lock(&priv->mutex);
2524         rc = iwl_send_statistics_request(priv, 0);
2525         mutex_unlock(&priv->mutex);
2526
2527         if (rc) {
2528                 len = sprintf(buf,
2529                               "Error sending statistics request: 0x%08X\n", rc);
2530                 return len;
2531         }
2532
2533         while (size && (PAGE_SIZE - len)) {
2534                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
2535                                    PAGE_SIZE - len, 1);
2536                 len = strlen(buf);
2537                 if (PAGE_SIZE - len)
2538                         buf[len++] = '\n';
2539
2540                 ofs += 16;
2541                 size -= min(size, 16U);
2542         }
2543
2544         return len;
2545 }
2546
2547 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
2548
2549
2550 /*****************************************************************************
2551  *
2552  * driver setup and teardown
2553  *
2554  *****************************************************************************/
2555
2556 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2557 {
2558         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2559
2560         init_waitqueue_head(&priv->wait_command_queue);
2561
2562         INIT_WORK(&priv->up, iwl_bg_up);
2563         INIT_WORK(&priv->restart, iwl_bg_restart);
2564         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
2565         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
2566         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2567         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2568         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
2569         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
2570
2571         iwl_setup_scan_deferred_work(priv);
2572         iwl_setup_power_deferred_work(priv);
2573
2574         if (priv->cfg->ops->lib->setup_deferred_work)
2575                 priv->cfg->ops->lib->setup_deferred_work(priv);
2576
2577         init_timer(&priv->statistics_periodic);
2578         priv->statistics_periodic.data = (unsigned long)priv;
2579         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2580
2581         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2582                      iwl_irq_tasklet, (unsigned long)priv);
2583 }
2584
2585 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2586 {
2587         if (priv->cfg->ops->lib->cancel_deferred_work)
2588                 priv->cfg->ops->lib->cancel_deferred_work(priv);
2589
2590         cancel_delayed_work_sync(&priv->init_alive_start);
2591         cancel_delayed_work(&priv->scan_check);
2592         cancel_delayed_work_sync(&priv->set_power_save);
2593         cancel_delayed_work(&priv->alive_start);
2594         cancel_work_sync(&priv->beacon_update);
2595         del_timer_sync(&priv->statistics_periodic);
2596 }
2597
2598 static struct attribute *iwl_sysfs_entries[] = {
2599         &dev_attr_flags.attr,
2600         &dev_attr_filter_flags.attr,
2601         &dev_attr_power_level.attr,
2602         &dev_attr_statistics.attr,
2603         &dev_attr_temperature.attr,
2604         &dev_attr_tx_power.attr,
2605 #ifdef CONFIG_IWLWIFI_DEBUG
2606         &dev_attr_debug_level.attr,
2607 #endif
2608         &dev_attr_version.attr,
2609
2610         NULL
2611 };
2612
2613 static struct attribute_group iwl_attribute_group = {
2614         .name = NULL,           /* put in device directory */
2615         .attrs = iwl_sysfs_entries,
2616 };
2617
2618 static struct ieee80211_ops iwl_hw_ops = {
2619         .tx = iwl_mac_tx,
2620         .start = iwl_mac_start,
2621         .stop = iwl_mac_stop,
2622         .add_interface = iwl_mac_add_interface,
2623         .remove_interface = iwl_mac_remove_interface,
2624         .config = iwl_mac_config,
2625         .config_interface = iwl_mac_config_interface,
2626         .configure_filter = iwl_configure_filter,
2627         .set_key = iwl_mac_set_key,
2628         .update_tkip_key = iwl_mac_update_tkip_key,
2629         .get_stats = iwl_mac_get_stats,
2630         .get_tx_stats = iwl_mac_get_tx_stats,
2631         .conf_tx = iwl_mac_conf_tx,
2632         .reset_tsf = iwl_mac_reset_tsf,
2633         .bss_info_changed = iwl_bss_info_changed,
2634         .ampdu_action = iwl_mac_ampdu_action,
2635         .hw_scan = iwl_mac_hw_scan
2636 };
2637
2638 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2639 {
2640         int err = 0;
2641         struct iwl_priv *priv;
2642         struct ieee80211_hw *hw;
2643         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
2644         unsigned long flags;
2645         u16 pci_cmd;
2646
2647         /************************
2648          * 1. Allocating HW data
2649          ************************/
2650
2651         /* Disabling hardware scan means that mac80211 will perform scans
2652          * "the hard way", rather than using device's scan. */
2653         if (cfg->mod_params->disable_hw_scan) {
2654                 if (cfg->mod_params->debug & IWL_DL_INFO)
2655                         dev_printk(KERN_DEBUG, &(pdev->dev),
2656                                    "Disabling hw_scan\n");
2657                 iwl_hw_ops.hw_scan = NULL;
2658         }
2659
2660         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
2661         if (!hw) {
2662                 err = -ENOMEM;
2663                 goto out;
2664         }
2665         priv = hw->priv;
2666         /* At this point both hw and priv are allocated. */
2667
2668         SET_IEEE80211_DEV(hw, &pdev->dev);
2669
2670         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
2671         priv->cfg = cfg;
2672         priv->pci_dev = pdev;
2673
2674 #ifdef CONFIG_IWLWIFI_DEBUG
2675         priv->debug_level = priv->cfg->mod_params->debug;
2676         atomic_set(&priv->restrict_refcnt, 0);
2677 #endif
2678
2679         /**************************
2680          * 2. Initializing PCI bus
2681          **************************/
2682         if (pci_enable_device(pdev)) {
2683                 err = -ENODEV;
2684                 goto out_ieee80211_free_hw;
2685         }
2686
2687         pci_set_master(pdev);
2688
2689         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
2690         if (!err)
2691                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
2692         if (err) {
2693                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2694                 if (!err)
2695                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2696                 /* both attempts failed: */
2697                 if (err) {
2698                         IWL_WARN(priv, "No suitable DMA available.\n");
2699                         goto out_pci_disable_device;
2700                 }
2701         }
2702
2703         err = pci_request_regions(pdev, DRV_NAME);
2704         if (err)
2705                 goto out_pci_disable_device;
2706
2707         pci_set_drvdata(pdev, priv);
2708
2709
2710         /***********************
2711          * 3. Read REV register
2712          ***********************/
2713         priv->hw_base = pci_iomap(pdev, 0, 0);
2714         if (!priv->hw_base) {
2715                 err = -ENODEV;
2716                 goto out_pci_release_regions;
2717         }
2718
2719         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
2720                 (unsigned long long) pci_resource_len(pdev, 0));
2721         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
2722
2723         iwl_hw_detect(priv);
2724         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
2725                 priv->cfg->name, priv->hw_rev);
2726
2727         /* We disable the RETRY_TIMEOUT register (0x41) to keep
2728          * PCI Tx retries from interfering with C3 CPU state */
2729         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2730
2731         /* amp init */
2732         err = priv->cfg->ops->lib->apm_ops.init(priv);
2733         if (err < 0) {
2734                 IWL_ERR(priv, "Failed to init APMG\n");
2735                 goto out_iounmap;
2736         }
2737         /*****************
2738          * 4. Read EEPROM
2739          *****************/
2740         /* Read the EEPROM */
2741         err = iwl_eeprom_init(priv);
2742         if (err) {
2743                 IWL_ERR(priv, "Unable to init EEPROM\n");
2744                 goto out_iounmap;
2745         }
2746         err = iwl_eeprom_check_version(priv);
2747         if (err)
2748                 goto out_free_eeprom;
2749
2750         /* extract MAC Address */
2751         iwl_eeprom_get_mac(priv, priv->mac_addr);
2752         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
2753         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2754
2755         /************************
2756          * 5. Setup HW constants
2757          ************************/
2758         if (iwl_set_hw_params(priv)) {
2759                 IWL_ERR(priv, "failed to set hw parameters\n");
2760                 goto out_free_eeprom;
2761         }
2762
2763         /*******************
2764          * 6. Setup priv
2765          *******************/
2766
2767         err = iwl_init_drv(priv);
2768         if (err)
2769                 goto out_free_eeprom;
2770         /* At this point both hw and priv are initialized. */
2771
2772         /********************
2773          * 7. Setup services
2774          ********************/
2775         spin_lock_irqsave(&priv->lock, flags);
2776         iwl_disable_interrupts(priv);
2777         spin_unlock_irqrestore(&priv->lock, flags);
2778
2779         pci_enable_msi(priv->pci_dev);
2780
2781         err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2782                           DRV_NAME, priv);
2783         if (err) {
2784                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
2785                 goto out_disable_msi;
2786         }
2787         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
2788         if (err) {
2789                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2790                 goto out_free_irq;
2791         }
2792
2793         iwl_setup_deferred_work(priv);
2794         iwl_setup_rx_handlers(priv);
2795
2796         /**********************************
2797          * 8. Setup and register mac80211
2798          **********************************/
2799
2800         /* enable interrupts if needed: hw bug w/a */
2801         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2802         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2803                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2804                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2805         }
2806
2807         iwl_enable_interrupts(priv);
2808
2809         err = iwl_setup_mac(priv);
2810         if (err)
2811                 goto out_remove_sysfs;
2812
2813         err = iwl_dbgfs_register(priv, DRV_NAME);
2814         if (err)
2815                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2816
2817         /* If platform's RF_KILL switch is NOT set to KILL */
2818         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2819                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2820         else
2821                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2822
2823         err = iwl_rfkill_init(priv);
2824         if (err)
2825                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
2826                                   "Ignoring error: %d\n", err);
2827         else
2828                 iwl_rfkill_set_hw_state(priv);
2829
2830         iwl_power_initialize(priv);
2831         return 0;
2832
2833  out_remove_sysfs:
2834         destroy_workqueue(priv->workqueue);
2835         priv->workqueue = NULL;
2836         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2837  out_free_irq:
2838         free_irq(priv->pci_dev->irq, priv);
2839  out_disable_msi:
2840         pci_disable_msi(priv->pci_dev);
2841         iwl_uninit_drv(priv);
2842  out_free_eeprom:
2843         iwl_eeprom_free(priv);
2844  out_iounmap:
2845         pci_iounmap(pdev, priv->hw_base);
2846  out_pci_release_regions:
2847         pci_set_drvdata(pdev, NULL);
2848         pci_release_regions(pdev);
2849  out_pci_disable_device:
2850         pci_disable_device(pdev);
2851  out_ieee80211_free_hw:
2852         ieee80211_free_hw(priv->hw);
2853  out:
2854         return err;
2855 }
2856
2857 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
2858 {
2859         struct iwl_priv *priv = pci_get_drvdata(pdev);
2860         unsigned long flags;
2861
2862         if (!priv)
2863                 return;
2864
2865         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
2866
2867         iwl_dbgfs_unregister(priv);
2868         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2869
2870         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
2871          * to be called and iwl_down since we are removing the device
2872          * we need to set STATUS_EXIT_PENDING bit.
2873          */
2874         set_bit(STATUS_EXIT_PENDING, &priv->status);
2875         if (priv->mac80211_registered) {
2876                 ieee80211_unregister_hw(priv->hw);
2877                 priv->mac80211_registered = 0;
2878         } else {
2879                 iwl_down(priv);
2880         }
2881
2882         /* make sure we flush any pending irq or
2883          * tasklet for the driver
2884          */
2885         spin_lock_irqsave(&priv->lock, flags);
2886         iwl_disable_interrupts(priv);
2887         spin_unlock_irqrestore(&priv->lock, flags);
2888
2889         iwl_synchronize_irq(priv);
2890
2891         iwl_rfkill_unregister(priv);
2892         iwl_dealloc_ucode_pci(priv);
2893
2894         if (priv->rxq.bd)
2895                 iwl_rx_queue_free(priv, &priv->rxq);
2896         iwl_hw_txq_ctx_free(priv);
2897
2898         priv->cfg->ops->smgmt->clear_station_table(priv);
2899         iwl_eeprom_free(priv);
2900
2901
2902         /*netif_stop_queue(dev); */
2903         flush_workqueue(priv->workqueue);
2904
2905         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
2906          * priv->workqueue... so we can't take down the workqueue
2907          * until now... */
2908         destroy_workqueue(priv->workqueue);
2909         priv->workqueue = NULL;
2910
2911         free_irq(priv->pci_dev->irq, priv);
2912         pci_disable_msi(priv->pci_dev);
2913         pci_iounmap(pdev, priv->hw_base);
2914         pci_release_regions(pdev);
2915         pci_disable_device(pdev);
2916         pci_set_drvdata(pdev, NULL);
2917
2918         iwl_uninit_drv(priv);
2919
2920         if (priv->ibss_beacon)
2921                 dev_kfree_skb(priv->ibss_beacon);
2922
2923         ieee80211_free_hw(priv->hw);
2924 }
2925
2926
2927 /*****************************************************************************
2928  *
2929  * driver and module entry point
2930  *
2931  *****************************************************************************/
2932
2933 /* Hardware specific file defines the PCI IDs table for that hardware module */
2934 static struct pci_device_id iwl_hw_card_ids[] = {
2935 #ifdef CONFIG_IWL4965
2936         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
2937         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
2938 #endif /* CONFIG_IWL4965 */
2939 #ifdef CONFIG_IWL5000
2940         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
2941         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
2942         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
2943         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
2944         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
2945         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
2946         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
2947         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
2948         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
2949         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
2950 /* 5350 WiFi/WiMax */
2951         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
2952         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
2953         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
2954 /* 5150 Wifi/WiMax */
2955         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
2956         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
2957 /* 6000/6050 Series */
2958         {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
2959         {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
2960         {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
2961         {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
2962         {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
2963         {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
2964         {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
2965         {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
2966         {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
2967         {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
2968         {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
2969 /* 1000 Series WiFi */
2970         {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl1000_bgn_cfg)},
2971         {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl1000_bgn_cfg)},
2972 #endif /* CONFIG_IWL5000 */
2973
2974         {0}
2975 };
2976 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
2977
2978 static struct pci_driver iwl_driver = {
2979         .name = DRV_NAME,
2980         .id_table = iwl_hw_card_ids,
2981         .probe = iwl_pci_probe,
2982         .remove = __devexit_p(iwl_pci_remove),
2983 #ifdef CONFIG_PM
2984         .suspend = iwl_pci_suspend,
2985         .resume = iwl_pci_resume,
2986 #endif
2987 };
2988
2989 static int __init iwl_init(void)
2990 {
2991
2992         int ret;
2993         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
2994         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
2995
2996         ret = iwlagn_rate_control_register();
2997         if (ret) {
2998                 printk(KERN_ERR DRV_NAME
2999                        "Unable to register rate control algorithm: %d\n", ret);
3000                 return ret;
3001         }
3002
3003         ret = pci_register_driver(&iwl_driver);
3004         if (ret) {
3005                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3006                 goto error_register;
3007         }
3008
3009         return ret;
3010
3011 error_register:
3012         iwlagn_rate_control_unregister();
3013         return ret;
3014 }
3015
3016 static void __exit iwl_exit(void)
3017 {
3018         pci_unregister_driver(&iwl_driver);
3019         iwlagn_rate_control_unregister();
3020 }
3021
3022 module_exit(iwl_exit);
3023 module_init(iwl_init);