SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #define DRV_NAME        "iwlagn"
  48
  49 #include "iwl-eeprom.h"
  50 #include "iwl-dev.h"
  51 #include "iwl-core.h"
  52 #include "iwl-io.h"
  53 #include "iwl-helpers.h"
  54 #include "iwl-sta.h"
  55 #include "iwl-calib.h"
  56
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /*
  65  * module name, copyright, version, etc.
  66  */
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_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
  99 static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 112  * @priv: staging_rxon is compared to active_rxon
 113  *
 114  * If the RXON structure is changing enough to require a new tune,
 115  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 116  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 117  */
 118 static int iwl_full_rxon_required(struct iwl_priv *priv)
 119 {
 120
 121         /* These items are only settable from the full RXON command */
 122         if (!(iwl_is_associated(priv)) ||
 123             compare_ether_addr(priv->staging_rxon.bssid_addr,
 124                                priv->active_rxon.bssid_addr) ||
 125             compare_ether_addr(priv->staging_rxon.node_addr,
 126                                priv->active_rxon.node_addr) ||
 127             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 128                                priv->active_rxon.wlap_bssid_addr) ||
 129             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 130             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 131             (priv->staging_rxon.air_propagation !=
 132              priv->active_rxon.air_propagation) ||
 133             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 134              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 135             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 136              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 137             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 138                 return 1;
 139
 140         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 141          * be updated with the RXON_ASSOC command -- however only some
 142          * flag transitions are allowed using RXON_ASSOC */
 143
 144         /* Check if we are not switching bands */
 145         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 146             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 147                 return 1;
 148
 149         /* Check if we are switching association toggle */
 150         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 151                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 152                 return 1;
 153
 154         return 0;
 155 }
 156
 157 /**
 158  * iwl_commit_rxon - commit staging_rxon to hardware
 159  *
 160  * The RXON command in staging_rxon is committed to the hardware and
 161  * the active_rxon structure is updated with the new data.  This
 162  * function correctly transitions out of the RXON_ASSOC_MSK state if
 163  * a HW tune is required based on the RXON structure changes.
 164  */
 165 static int iwl_commit_rxon(struct iwl_priv *priv)
 166 {
 167         /* cast away the const for active_rxon in this function */
 168         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 169         int ret;
 170         bool new_assoc =
 171                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 172
 173         if (!iwl_is_alive(priv))
 174                 return -EBUSY;
 175
 176         /* always get timestamp with Rx frame */
 177         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 178         /* allow CTS-to-self if possible. this is relevant only for
 179          * 5000, but will not damage 4965 */
 180         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 181
 182         ret = iwl_agn_check_rxon_cmd(priv);
 183         if (ret) {
 184                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 185                 return -EINVAL;
 186         }
 187
 188         /* If we don't need to send a full RXON, we can use
 189          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 190          * and other flags for the current radio configuration. */
 191         if (!iwl_full_rxon_required(priv)) {
 192                 ret = iwl_send_rxon_assoc(priv);
 193                 if (ret) {
 194                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 195                         return ret;
 196                 }
 197
 198                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 199                 return 0;
 200         }
 201
 202         /* station table will be cleared */
 203         priv->assoc_station_added = 0;
 204
 205         /* If we are currently associated and the new config requires
 206          * an RXON_ASSOC and the new config wants the associated mask enabled,
 207          * we must clear the associated from the active configuration
 208          * before we apply the new config */
 209         if (iwl_is_associated(priv) && new_assoc) {
 210                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 211                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 212
 213                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 214                                       sizeof(struct iwl_rxon_cmd),
 215                                       &priv->active_rxon);
 216
 217                 /* If the mask clearing failed then we set
 218                  * active_rxon back to what it was previously */
 219                 if (ret) {
 220                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 221                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 222                         return ret;
 223                 }
 224         }
 225
 226         IWL_DEBUG_INFO("Sending RXON\n"
 227                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 228                        "* channel = %d\n"
 229                        "* bssid = %pM\n",
 230                        (new_assoc ? "" : "out"),
 231                        le16_to_cpu(priv->staging_rxon.channel),
 232                        priv->staging_rxon.bssid_addr);
 233
 234         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 235
 236         /* Apply the new configuration
 237          * RXON unassoc clears the station table in uCode, send it before
 238          * we add the bcast station. If assoc bit is set, we will send RXON
 239          * after having added the bcast and bssid station.
 240          */
 241         if (!new_assoc) {
 242                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 243                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 244                 if (ret) {
 245                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 246                         return ret;
 247                 }
 248                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 249         }
 250
 251         iwl_clear_stations_table(priv);
 252
 253         if (!priv->error_recovering)
 254                 priv->start_calib = 0;
 255
 256         /* Add the broadcast address so we can send broadcast frames */
 257         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 258                                                 IWL_INVALID_STATION) {
 259                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 260                 return -EIO;
 261         }
 262
 263         /* If we have set the ASSOC_MSK and we are in BSS mode then
 264          * add the IWL_AP_ID to the station rate table */
 265         if (new_assoc) {
 266                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 267                         ret = iwl_rxon_add_station(priv,
 268                                            priv->active_rxon.bssid_addr, 1);
 269                         if (ret == IWL_INVALID_STATION) {
 270                                 IWL_ERR(priv,
 271                                         "Error adding AP address for TX.\n");
 272                                 return -EIO;
 273                         }
 274                         priv->assoc_station_added = 1;
 275                         if (priv->default_wep_key &&
 276                             iwl_send_static_wepkey_cmd(priv, 0))
 277                                 IWL_ERR(priv,
 278                                         "Could not send WEP static key.\n");
 279                 }
 280
 281                 /* Apply the new configuration
 282                  * RXON assoc doesn't clear the station table in uCode,
 283                  */
 284                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 285                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 286                 if (ret) {
 287                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 288                         return ret;
 289                 }
 290                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 291         }
 292
 293         iwl_init_sensitivity(priv);
 294
 295         /* If we issue a new RXON command which required a tune then we must
 296          * send a new TXPOWER command or we won't be able to Tx any frames */
 297         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 298         if (ret) {
 299                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 300                 return ret;
 301         }
 302
 303         return 0;
 304 }
 305
 306 void iwl_update_chain_flags(struct iwl_priv *priv)
 307 {
 308
 309         iwl_set_rxon_chain(priv);
 310         iwl_commit_rxon(priv);
 311 }
 312
 313 static int iwl_send_bt_config(struct iwl_priv *priv)
 314 {
 315         struct iwl_bt_cmd bt_cmd = {
 316                 .flags = 3,
 317                 .lead_time = 0xAA,
 318                 .max_kill = 1,
 319                 .kill_ack_mask = 0,
 320                 .kill_cts_mask = 0,
 321         };
 322
 323         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 324                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
 325 }
 326
 327 static void iwl_clear_free_frames(struct iwl_priv *priv)
 328 {
 329         struct list_head *element;
 330
 331         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 332                        priv->frames_count);
 333
 334         while (!list_empty(&priv->free_frames)) {
 335                 element = priv->free_frames.next;
 336                 list_del(element);
 337                 kfree(list_entry(element, struct iwl_frame, list));
 338                 priv->frames_count--;
 339         }
 340
 341         if (priv->frames_count) {
 342                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 343                             priv->frames_count);
 344                 priv->frames_count = 0;
 345         }
 346 }
 347
 348 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 349 {
 350         struct iwl_frame *frame;
 351         struct list_head *element;
 352         if (list_empty(&priv->free_frames)) {
 353                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 354                 if (!frame) {
 355                         IWL_ERR(priv, "Could not allocate frame!\n");
 356                         return NULL;
 357                 }
 358
 359                 priv->frames_count++;
 360                 return frame;
 361         }
 362
 363         element = priv->free_frames.next;
 364         list_del(element);
 365         return list_entry(element, struct iwl_frame, list);
 366 }
 367
 368 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 369 {
 370         memset(frame, 0, sizeof(*frame));
 371         list_add(&frame->list, &priv->free_frames);
 372 }
 373
 374 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 375                                           struct ieee80211_hdr *hdr,
 376                                           int left)
 377 {
 378         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 379             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 380              (priv->iw_mode != NL80211_IFTYPE_AP)))
 381                 return 0;
 382
 383         if (priv->ibss_beacon->len > left)
 384                 return 0;
 385
 386         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 387
 388         return priv->ibss_beacon->len;
 389 }
 390
 391 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 392 {
 393         int i;
 394         int rate_mask;
 395
 396         /* Set rate mask*/
 397         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 398                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 399         else
 400                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 401
 402         /* Find lowest valid rate */
 403         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 404                                         i = iwl_rates[i].next_ieee) {
 405                 if (rate_mask & (1 << i))
 406                         return iwl_rates[i].plcp;
 407         }
 408
 409         /* No valid rate was found. Assign the lowest one */
 410         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 411                 return IWL_RATE_1M_PLCP;
 412         else
 413                 return IWL_RATE_6M_PLCP;
 414 }
 415
 416 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 417                                        struct iwl_frame *frame, u8 rate)
 418 {
 419         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 420         unsigned int frame_size;
 421
 422         tx_beacon_cmd = &frame->u.beacon;
 423         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 424
 425         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 426         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 427
 428         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 429                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 430
 431         BUG_ON(frame_size > MAX_MPDU_SIZE);
 432         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 433
 434         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 435                 tx_beacon_cmd->tx.rate_n_flags =
 436                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 437         else
 438                 tx_beacon_cmd->tx.rate_n_flags =
 439                         iwl_hw_set_rate_n_flags(rate, 0);
 440
 441         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 442                                      TX_CMD_FLG_TSF_MSK |
 443                                      TX_CMD_FLG_STA_RATE_MSK;
 444
 445         return sizeof(*tx_beacon_cmd) + frame_size;
 446 }
 447 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 448 {
 449         struct iwl_frame *frame;
 450         unsigned int frame_size;
 451         int rc;
 452         u8 rate;
 453
 454         frame = iwl_get_free_frame(priv);
 455
 456         if (!frame) {
 457                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 458                           "command.\n");
 459                 return -ENOMEM;
 460         }
 461
 462         rate = iwl_rate_get_lowest_plcp(priv);
 463
 464         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 465
 466         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 467                               &frame->u.cmd[0]);
 468
 469         iwl_free_frame(priv, frame);
 470
 471         return rc;
 472 }
 473
 474 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 475 {
 476         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 477
 478         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 479         if (sizeof(dma_addr_t) > sizeof(u32))
 480                 addr |=
 481                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 482
 483         return addr;
 484 }
 485
 486 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 487 {
 488         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 489
 490         return le16_to_cpu(tb->hi_n_len) >> 4;
 491 }
 492
 493 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 494                                   dma_addr_t addr, u16 len)
 495 {
 496         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 497         u16 hi_n_len = len << 4;
 498
 499         put_unaligned_le32(addr, &tb->lo);
 500         if (sizeof(dma_addr_t) > sizeof(u32))
 501                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 502
 503         tb->hi_n_len = cpu_to_le16(hi_n_len);
 504
 505         tfd->num_tbs = idx + 1;
 506 }
 507
 508 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 509 {
 510         return tfd->num_tbs & 0x1f;
 511 }
 512
 513 /**
 514  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 515  * @priv - driver private data
 516  * @txq - tx queue
 517  *
 518  * Does NOT advance any TFD circular buffer read/write indexes
 519  * Does NOT free the TFD itself (which is within circular buffer)
 520  */
 521 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 522 {
 523         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)&txq->tfds[0];
 524         struct iwl_tfd *tfd;
 525         struct pci_dev *dev = priv->pci_dev;
 526         int index = txq->q.read_ptr;
 527         int i;
 528         int num_tbs;
 529
 530         tfd = &tfd_tmp[index];
 531
 532         /* Sanity check on number of chunks */
 533         num_tbs = iwl_tfd_get_num_tbs(tfd);
 534
 535         if (num_tbs >= IWL_NUM_OF_TBS) {
 536                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 537                 /* @todo issue fatal error, it is quite serious situation */
 538                 return;
 539         }
 540
 541         /* Unmap tx_cmd */
 542         if (num_tbs)
 543                 pci_unmap_single(dev,
 544                                 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
 545                                 pci_unmap_len(&txq->cmd[index]->meta, len),
 546                                 PCI_DMA_TODEVICE);
 547
 548         /* Unmap chunks, if any. */
 549         for (i = 1; i < num_tbs; i++) {
 550                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 551                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 552
 553                 if (txq->txb) {
 554                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 555                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 556                 }
 557         }
 558 }
 559
 560 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 561                                  struct iwl_tx_queue *txq,
 562                                  dma_addr_t addr, u16 len,
 563                                  u8 reset, u8 pad)
 564 {
 565         struct iwl_queue *q;
 566         struct iwl_tfd *tfd;
 567         u32 num_tbs;
 568
 569         q = &txq->q;
 570         tfd = &txq->tfds[q->write_ptr];
 571
 572         if (reset)
 573                 memset(tfd, 0, sizeof(*tfd));
 574
 575         num_tbs = iwl_tfd_get_num_tbs(tfd);
 576
 577         /* Each TFD can point to a maximum 20 Tx buffers */
 578         if (num_tbs >= IWL_NUM_OF_TBS) {
 579                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 580                           IWL_NUM_OF_TBS);
 581                 return -EINVAL;
 582         }
 583
 584         BUG_ON(addr & ~DMA_BIT_MASK(36));
 585         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 586                 IWL_ERR(priv, "Unaligned address = %llx\n",
 587                           (unsigned long long)addr);
 588
 589         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 590
 591         return 0;
 592 }
 593
 594 /******************************************************************************
 595  *
 596  * Misc. internal state and helper functions
 597  *
 598  ******************************************************************************/
 599
 600 static void iwl_ht_conf(struct iwl_priv *priv,
 601                             struct ieee80211_bss_conf *bss_conf)
 602 {
 603         struct ieee80211_sta_ht_cap *ht_conf;
 604         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 605         struct ieee80211_sta *sta;
 606
 607         IWL_DEBUG_MAC80211("enter: \n");
 608
 609         if (!iwl_conf->is_ht)
 610                 return;
 611
 612
 613         /*
 614          * It is totally wrong to base global information on something
 615          * that is valid only when associated, alas, this driver works
 616          * that way and I don't know how to fix it.
 617          */
 618
 619         rcu_read_lock();
 620         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 621         if (!sta) {
 622                 rcu_read_unlock();
 623                 return;
 624         }
 625         ht_conf = &sta->ht_cap;
 626
 627         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 628                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 629         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 630                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 631
 632         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 633         iwl_conf->max_amsdu_size =
 634                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 635
 636         iwl_conf->supported_chan_width =
 637                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 638
 639         /*
 640          * XXX: The HT configuration needs to be moved into iwl_mac_config()
 641          *      to be done there correctly.
 642          */
 643
 644         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 645         if (conf_is_ht40_minus(&priv->hw->conf))
 646                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 647         else if (conf_is_ht40_plus(&priv->hw->conf))
 648                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 649
 650         /* If no above or below channel supplied disable FAT channel */
 651         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 652             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 653                 iwl_conf->supported_chan_width = 0;
 654
 655         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 656
 657         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 658
 659         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
 660         iwl_conf->ht_protection =
 661                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 662         iwl_conf->non_GF_STA_present =
 663                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 664
 665         rcu_read_unlock();
 666
 667         IWL_DEBUG_MAC80211("leave\n");
 668 }
 669
 670 /*
 671  * QoS  support
 672 */
 673 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 674 {
 675         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 676                 return;
 677
 678         priv->qos_data.def_qos_parm.qos_flags = 0;
 679
 680         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 681             !priv->qos_data.qos_cap.q_AP.txop_request)
 682                 priv->qos_data.def_qos_parm.qos_flags |=
 683                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 684         if (priv->qos_data.qos_active)
 685                 priv->qos_data.def_qos_parm.qos_flags |=
 686                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 687
 688         if (priv->current_ht_config.is_ht)
 689                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 690
 691         if (force || iwl_is_associated(priv)) {
 692                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 693                                 priv->qos_data.qos_active,
 694                                 priv->qos_data.def_qos_parm.qos_flags);
 695
 696                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 697                                        sizeof(struct iwl_qosparam_cmd),
 698                                        &priv->qos_data.def_qos_parm, NULL);
 699         }
 700 }
 701
 702 #define MAX_UCODE_BEACON_INTERVAL       4096
 703
 704 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 705 {
 706         u16 new_val = 0;
 707         u16 beacon_factor = 0;
 708
 709         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 710                                         / MAX_UCODE_BEACON_INTERVAL;
 711         new_val = beacon_val / beacon_factor;
 712
 713         return new_val;
 714 }
 715
 716 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 717 {
 718         u64 tsf;
 719         s32 interval_tm, rem;
 720         unsigned long flags;
 721         struct ieee80211_conf *conf = NULL;
 722         u16 beacon_int = 0;
 723
 724         conf = ieee80211_get_hw_conf(priv->hw);
 725
 726         spin_lock_irqsave(&priv->lock, flags);
 727         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 728         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 729
 730         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 731                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 732                 priv->rxon_timing.atim_window = 0;
 733         } else {
 734                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 735
 736                 /* TODO: we need to get atim_window from upper stack
 737                  * for now we set to 0 */
 738                 priv->rxon_timing.atim_window = 0;
 739         }
 740
 741         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 742
 743         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 744         interval_tm = beacon_int * 1024;
 745         rem = do_div(tsf, interval_tm);
 746         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 747
 748         spin_unlock_irqrestore(&priv->lock, flags);
 749         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 750                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 751                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 752                         le16_to_cpu(priv->rxon_timing.atim_window));
 753 }
 754
 755 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 756                                    enum ieee80211_band band)
 757 {
 758         if (band == IEEE80211_BAND_5GHZ) {
 759                 priv->staging_rxon.flags &=
 760                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 761                       | RXON_FLG_CCK_MSK);
 762                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 763         } else {
 764                 /* Copied from iwl_post_associate() */
 765                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 766                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 767                 else
 768                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 769
 770                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 771                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 772
 773                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 774                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 775                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 776         }
 777 }
 778
 779 /*
 780  * initialize rxon structure with default values from eeprom
 781  */
 782 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 783 {
 784         const struct iwl_channel_info *ch_info;
 785
 786         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 787
 788         switch (mode) {
 789         case NL80211_IFTYPE_AP:
 790                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 791                 break;
 792
 793         case NL80211_IFTYPE_STATION:
 794                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 795                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 796                 break;
 797
 798         case NL80211_IFTYPE_ADHOC:
 799                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 800                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 801                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 802                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 803                 break;
 804
 805         case NL80211_IFTYPE_MONITOR:
 806                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 807                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 808                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 809                 break;
 810         default:
 811                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
 812                 break;
 813         }
 814
 815 #if 0
 816         /* TODO:  Figure out when short_preamble would be set and cache from
 817          * that */
 818         if (!hw_to_local(priv->hw)->short_preamble)
 819                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 820         else
 821                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 822 #endif
 823
 824         ch_info = iwl_get_channel_info(priv, priv->band,
 825                                        le16_to_cpu(priv->active_rxon.channel));
 826
 827         if (!ch_info)
 828                 ch_info = &priv->channel_info[0];
 829
 830         /*
 831          * in some case A channels are all non IBSS
 832          * in this case force B/G channel
 833          */
 834         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 835             !(is_channel_ibss(ch_info)))
 836                 ch_info = &priv->channel_info[0];
 837
 838         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 839         priv->band = ch_info->band;
 840
 841         iwl_set_flags_for_band(priv, priv->band);
 842
 843         priv->staging_rxon.ofdm_basic_rates =
 844             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 845         priv->staging_rxon.cck_basic_rates =
 846             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 847
 848         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 849                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 850         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 851         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 852         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 853         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 854         iwl_set_rxon_chain(priv);
 855 }
 856
 857 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 858 {
 859         iwl_connection_init_rx_config(priv, mode);
 860         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 861
 862         iwl_clear_stations_table(priv);
 863
 864         /* dont commit rxon if rf-kill is on*/
 865         if (!iwl_is_ready_rf(priv))
 866                 return -EAGAIN;
 867
 868         cancel_delayed_work(&priv->scan_check);
 869         if (iwl_scan_cancel_timeout(priv, 100)) {
 870                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
 871                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 872                 return -EAGAIN;
 873         }
 874
 875         iwl_commit_rxon(priv);
 876
 877         return 0;
 878 }
 879
 880 static void iwl_set_rate(struct iwl_priv *priv)
 881 {
 882         const struct ieee80211_supported_band *hw = NULL;
 883         struct ieee80211_rate *rate;
 884         int i;
 885
 886         hw = iwl_get_hw_mode(priv, priv->band);
 887         if (!hw) {
 888                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
 889                 return;
 890         }
 891
 892         priv->active_rate = 0;
 893         priv->active_rate_basic = 0;
 894
 895         for (i = 0; i < hw->n_bitrates; i++) {
 896                 rate = &(hw->bitrates[i]);
 897                 if (rate->hw_value < IWL_RATE_COUNT)
 898                         priv->active_rate |= (1 << rate->hw_value);
 899         }
 900
 901         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 902                        priv->active_rate, priv->active_rate_basic);
 903
 904         /*
 905          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 906          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 907          * OFDM
 908          */
 909         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 910                 priv->staging_rxon.cck_basic_rates =
 911                     ((priv->active_rate_basic &
 912                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 913         else
 914                 priv->staging_rxon.cck_basic_rates =
 915                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 916
 917         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 918                 priv->staging_rxon.ofdm_basic_rates =
 919                     ((priv->active_rate_basic &
 920                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 921                       IWL_FIRST_OFDM_RATE) & 0xFF;
 922         else
 923                 priv->staging_rxon.ofdm_basic_rates =
 924                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 925 }
 926
 927
 928 /******************************************************************************
 929  *
 930  * Generic RX handler implementations
 931  *
 932  ******************************************************************************/
 933 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 934                                 struct iwl_rx_mem_buffer *rxb)
 935 {
 936         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 937         struct iwl_alive_resp *palive;
 938         struct delayed_work *pwork;
 939
 940         palive = &pkt->u.alive_frame;
 941
 942         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 943                        "0x%01X 0x%01X\n",
 944                        palive->is_valid, palive->ver_type,
 945                        palive->ver_subtype);
 946
 947         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 948                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 949                 memcpy(&priv->card_alive_init,
 950                        &pkt->u.alive_frame,
 951                        sizeof(struct iwl_init_alive_resp));
 952                 pwork = &priv->init_alive_start;
 953         } else {
 954                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 955                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 956                        sizeof(struct iwl_alive_resp));
 957                 pwork = &priv->alive_start;
 958         }
 959
 960         /* We delay the ALIVE response by 5ms to
 961          * give the HW RF Kill time to activate... */
 962         if (palive->is_valid == UCODE_VALID_OK)
 963                 queue_delayed_work(priv->workqueue, pwork,
 964                                    msecs_to_jiffies(5));
 965         else
 966                 IWL_WARN(priv, "uCode did not respond OK.\n");
 967 }
 968
 969 static void iwl_rx_reply_error(struct iwl_priv *priv,
 970                                    struct iwl_rx_mem_buffer *rxb)
 971 {
 972         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 973
 974         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
 975                 "seq 0x%04X ser 0x%08X\n",
 976                 le32_to_cpu(pkt->u.err_resp.error_type),
 977                 get_cmd_string(pkt->u.err_resp.cmd_id),
 978                 pkt->u.err_resp.cmd_id,
 979                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 980                 le32_to_cpu(pkt->u.err_resp.error_info));
 981 }
 982
 983 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 984
 985 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 986 {
 987         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 988         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 989         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
 990         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 991                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 992         rxon->channel = csa->channel;
 993         priv->staging_rxon.channel = csa->channel;
 994 }
 995
 996 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 997                                       struct iwl_rx_mem_buffer *rxb)
 998 {
 999 #ifdef CONFIG_IWLWIFI_DEBUG
1000         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1001         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1002         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1003                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1004 #endif
1005 }
1006
1007 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1008                                              struct iwl_rx_mem_buffer *rxb)
1009 {
1010         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1011         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1012                         "notification for %s:\n",
1013                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1014         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1015 }
1016
1017 static void iwl_bg_beacon_update(struct work_struct *work)
1018 {
1019         struct iwl_priv *priv =
1020                 container_of(work, struct iwl_priv, beacon_update);
1021         struct sk_buff *beacon;
1022
1023         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1024         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1025
1026         if (!beacon) {
1027                 IWL_ERR(priv, "update beacon failed\n");
1028                 return;
1029         }
1030
1031         mutex_lock(&priv->mutex);
1032         /* new beacon skb is allocated every time; dispose previous.*/
1033         if (priv->ibss_beacon)
1034                 dev_kfree_skb(priv->ibss_beacon);
1035
1036         priv->ibss_beacon = beacon;
1037         mutex_unlock(&priv->mutex);
1038
1039         iwl_send_beacon_cmd(priv);
1040 }
1041
1042 /**
1043  * iwl_bg_statistics_periodic - Timer callback to queue statistics
1044  *
1045  * This callback is provided in order to send a statistics request.
1046  *
1047  * This timer function is continually reset to execute within
1048  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1049  * was received.  We need to ensure we receive the statistics in order
1050  * to update the temperature used for calibrating the TXPOWER.
1051  */
1052 static void iwl_bg_statistics_periodic(unsigned long data)
1053 {
1054         struct iwl_priv *priv = (struct iwl_priv *)data;
1055
1056         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1057                 return;
1058
1059         /* dont send host command if rf-kill is on */
1060         if (!iwl_is_ready_rf(priv))
1061                 return;
1062
1063         iwl_send_statistics_request(priv, CMD_ASYNC);
1064 }
1065
1066 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
1067                                 struct iwl_rx_mem_buffer *rxb)
1068 {
1069 #ifdef CONFIG_IWLWIFI_DEBUG
1070         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1071         struct iwl4965_beacon_notif *beacon =
1072                 (struct iwl4965_beacon_notif *)pkt->u.raw;
1073         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1074
1075         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1076                 "tsf %d %d rate %d\n",
1077                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1078                 beacon->beacon_notify_hdr.failure_frame,
1079                 le32_to_cpu(beacon->ibss_mgr_status),
1080                 le32_to_cpu(beacon->high_tsf),
1081                 le32_to_cpu(beacon->low_tsf), rate);
1082 #endif
1083
1084         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1085             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1086                 queue_work(priv->workqueue, &priv->beacon_update);
1087 }
1088
1089 /* Handle notification from uCode that card's power state is changing
1090  * due to software, hardware, or critical temperature RFKILL */
1091 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
1092                                     struct iwl_rx_mem_buffer *rxb)
1093 {
1094         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1095         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1096         unsigned long status = priv->status;
1097
1098         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1099                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1100                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1101
1102         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1103                      RF_CARD_DISABLED)) {
1104
1105                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1106                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1107
1108                 if (!iwl_grab_nic_access(priv)) {
1109                         iwl_write_direct32(
1110                                 priv, HBUS_TARG_MBX_C,
1111                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1112
1113                         iwl_release_nic_access(priv);
1114                 }
1115
1116                 if (!(flags & RXON_CARD_DISABLED)) {
1117                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1118                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1119                         if (!iwl_grab_nic_access(priv)) {
1120                                 iwl_write_direct32(
1121                                         priv, HBUS_TARG_MBX_C,
1122                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1123
1124                                 iwl_release_nic_access(priv);
1125                         }
1126                 }
1127
1128                 if (flags & RF_CARD_DISABLED) {
1129                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1130                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1131                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1132                         if (!iwl_grab_nic_access(priv))
1133                                 iwl_release_nic_access(priv);
1134                 }
1135         }
1136
1137         if (flags & HW_CARD_DISABLED)
1138                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1139         else
1140                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1141
1142
1143         if (flags & SW_CARD_DISABLED)
1144                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1145         else
1146                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1147
1148         if (!(flags & RXON_CARD_DISABLED))
1149                 iwl_scan_cancel(priv);
1150
1151         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1152              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1153             (test_bit(STATUS_RF_KILL_SW, &status) !=
1154              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1155                 queue_work(priv->workqueue, &priv->rf_kill);
1156         else
1157                 wake_up_interruptible(&priv->wait_command_queue);
1158 }
1159
1160 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1161 {
1162         int ret;
1163         unsigned long flags;
1164
1165         spin_lock_irqsave(&priv->lock, flags);
1166         ret = iwl_grab_nic_access(priv);
1167         if (ret)
1168                 goto err;
1169
1170         if (src == IWL_PWR_SRC_VAUX) {
1171                 u32 val;
1172                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1173                                             &val);
1174
1175                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1176                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1177                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1178                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1179         } else {
1180                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1181                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1182                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1183         }
1184
1185         iwl_release_nic_access(priv);
1186 err:
1187         spin_unlock_irqrestore(&priv->lock, flags);
1188         return ret;
1189 }
1190
1191 /**
1192  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1193  *
1194  * Setup the RX handlers for each of the reply types sent from the uCode
1195  * to the host.
1196  *
1197  * This function chains into the hardware specific files for them to setup
1198  * any hardware specific handlers as well.
1199  */
1200 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1201 {
1202         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1203         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1204         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1205         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1206         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1207             iwl_rx_pm_debug_statistics_notif;
1208         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1209
1210         /*
1211          * The same handler is used for both the REPLY to a discrete
1212          * statistics request from the host as well as for the periodic
1213          * statistics notifications (after received beacons) from the uCode.
1214          */
1215         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1216         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1217
1218         iwl_setup_spectrum_handlers(priv);
1219         iwl_setup_rx_scan_handlers(priv);
1220
1221         /* status change handler */
1222         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1223
1224         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1225             iwl_rx_missed_beacon_notif;
1226         /* Rx handlers */
1227         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1228         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1229         /* block ack */
1230         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1231         /* Set up hardware specific Rx handlers */
1232         priv->cfg->ops->lib->rx_handler_setup(priv);
1233 }
1234
1235 /**
1236  * iwl_rx_handle - Main entry function for receiving responses from uCode
1237  *
1238  * Uses the priv->rx_handlers callback function array to invoke
1239  * the appropriate handlers, including command responses,
1240  * frame-received notifications, and other notifications.
1241  */
1242 void iwl_rx_handle(struct iwl_priv *priv)
1243 {
1244         struct iwl_rx_mem_buffer *rxb;
1245         struct iwl_rx_packet *pkt;
1246         struct iwl_rx_queue *rxq = &priv->rxq;
1247         u32 r, i;
1248         int reclaim;
1249         unsigned long flags;
1250         u8 fill_rx = 0;
1251         u32 count = 8;
1252
1253         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1254          * buffer that the driver may process (last buffer filled by ucode). */
1255         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1256         i = rxq->read;
1257
1258         /* Rx interrupt, but nothing sent from uCode */
1259         if (i == r)
1260                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1261
1262         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1263                 fill_rx = 1;
1264
1265         while (i != r) {
1266                 rxb = rxq->queue[i];
1267
1268                 /* If an RXB doesn't have a Rx queue slot associated with it,
1269                  * then a bug has been introduced in the queue refilling
1270                  * routines -- catch it here */
1271                 BUG_ON(rxb == NULL);
1272
1273                 rxq->queue[i] = NULL;
1274
1275                 dma_sync_single_range_for_cpu(
1276                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1277                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1278                                 priv->hw_params.rx_buf_size,
1279                                 PCI_DMA_FROMDEVICE);
1280                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1281
1282                 /* Reclaim a command buffer only if this packet is a response
1283                  *   to a (driver-originated) command.
1284                  * If the packet (e.g. Rx frame) originated from uCode,
1285                  *   there is no command buffer to reclaim.
1286                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1287                  *   but apparently a few don't get set; catch them here. */
1288                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1289                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1290                         (pkt->hdr.cmd != REPLY_RX) &&
1291                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1292                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1293                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1294                         (pkt->hdr.cmd != REPLY_TX);
1295
1296                 /* Based on type of command response or notification,
1297                  *   handle those that need handling via function in
1298                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1299                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1300                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1301                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1302                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1303                 } else {
1304                         /* No handling needed */
1305                         IWL_DEBUG(IWL_DL_RX,
1306                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1307                                 r, i, get_cmd_string(pkt->hdr.cmd),
1308                                 pkt->hdr.cmd);
1309                 }
1310
1311                 if (reclaim) {
1312                         /* Invoke any callbacks, transfer the skb to caller, and
1313                          * fire off the (possibly) blocking iwl_send_cmd()
1314                          * as we reclaim the driver command queue */
1315                         if (rxb && rxb->skb)
1316                                 iwl_tx_cmd_complete(priv, rxb);
1317                         else
1318                                 IWL_WARN(priv, "Claim null rxb?\n");
1319                 }
1320
1321                 /* For now we just don't re-use anything.  We can tweak this
1322                  * later to try and re-use notification packets and SKBs that
1323                  * fail to Rx correctly */
1324                 if (rxb->skb != NULL) {
1325                         priv->alloc_rxb_skb--;
1326                         dev_kfree_skb_any(rxb->skb);
1327                         rxb->skb = NULL;
1328                 }
1329
1330                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1331                                  priv->hw_params.rx_buf_size + 256,
1332                                  PCI_DMA_FROMDEVICE);
1333                 spin_lock_irqsave(&rxq->lock, flags);
1334                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1335                 spin_unlock_irqrestore(&rxq->lock, flags);
1336                 i = (i + 1) & RX_QUEUE_MASK;
1337                 /* If there are a lot of unused frames,
1338                  * restock the Rx queue so ucode wont assert. */
1339                 if (fill_rx) {
1340                         count++;
1341                         if (count >= 8) {
1342                                 priv->rxq.read = i;
1343                                 iwl_rx_queue_restock(priv);
1344                                 count = 0;
1345                         }
1346                 }
1347         }
1348
1349         /* Backtrack one entry */
1350         priv->rxq.read = i;
1351         iwl_rx_queue_restock(priv);
1352 }
1353
1354 #ifdef CONFIG_IWLWIFI_DEBUG
1355 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1356 {
1357         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1358
1359         IWL_DEBUG_RADIO("RX CONFIG:\n");
1360         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1361         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1362         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1363         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1364                         le32_to_cpu(rxon->filter_flags));
1365         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1366         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1367                         rxon->ofdm_basic_rates);
1368         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1369         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1370         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1371         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1372 }
1373 #endif
1374
1375 /* call this function to flush any scheduled tasklet */
1376 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1377 {
1378         /* wait to make sure we flush pending tasklet*/
1379         synchronize_irq(priv->pci_dev->irq);
1380         tasklet_kill(&priv->irq_tasklet);
1381 }
1382
1383 /**
1384  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1385  */
1386 static void iwl_irq_handle_error(struct iwl_priv *priv)
1387 {
1388         /* Set the FW error flag -- cleared on iwl_down */
1389         set_bit(STATUS_FW_ERROR, &priv->status);
1390
1391         /* Cancel currently queued command. */
1392         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1393
1394 #ifdef CONFIG_IWLWIFI_DEBUG
1395         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1396                 iwl_dump_nic_error_log(priv);
1397                 iwl_dump_nic_event_log(priv);
1398                 iwl_print_rx_config_cmd(priv);
1399         }
1400 #endif
1401
1402         wake_up_interruptible(&priv->wait_command_queue);
1403
1404         /* Keep the restart process from trying to send host
1405          * commands by clearing the INIT status bit */
1406         clear_bit(STATUS_READY, &priv->status);
1407
1408         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1409                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1410                           "Restarting adapter due to uCode error.\n");
1411
1412                 if (iwl_is_associated(priv)) {
1413                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1414                                sizeof(priv->recovery_rxon));
1415                         priv->error_recovering = 1;
1416                 }
1417                 if (priv->cfg->mod_params->restart_fw)
1418                         queue_work(priv->workqueue, &priv->restart);
1419         }
1420 }
1421
1422 static void iwl_error_recovery(struct iwl_priv *priv)
1423 {
1424         unsigned long flags;
1425
1426         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1427                sizeof(priv->staging_rxon));
1428         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1429         iwl_commit_rxon(priv);
1430
1431         iwl_rxon_add_station(priv, priv->bssid, 1);
1432
1433         spin_lock_irqsave(&priv->lock, flags);
1434         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1435         priv->error_recovering = 0;
1436         spin_unlock_irqrestore(&priv->lock, flags);
1437 }
1438
1439 static void iwl_irq_tasklet(struct iwl_priv *priv)
1440 {
1441         u32 inta, handled = 0;
1442         u32 inta_fh;
1443         unsigned long flags;
1444 #ifdef CONFIG_IWLWIFI_DEBUG
1445         u32 inta_mask;
1446 #endif
1447
1448         spin_lock_irqsave(&priv->lock, flags);
1449
1450         /* Ack/clear/reset pending uCode interrupts.
1451          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1452          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1453         inta = iwl_read32(priv, CSR_INT);
1454         iwl_write32(priv, CSR_INT, inta);
1455
1456         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1457          * Any new interrupts that happen after this, either while we're
1458          * in this tasklet, or later, will show up in next ISR/tasklet. */
1459         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1460         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1461
1462 #ifdef CONFIG_IWLWIFI_DEBUG
1463         if (priv->debug_level & IWL_DL_ISR) {
1464                 /* just for debug */
1465                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1466                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1467                               inta, inta_mask, inta_fh);
1468         }
1469 #endif
1470
1471         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1472          * atomic, make sure that inta covers all the interrupts that
1473          * we've discovered, even if FH interrupt came in just after
1474          * reading CSR_INT. */
1475         if (inta_fh & CSR49_FH_INT_RX_MASK)
1476                 inta |= CSR_INT_BIT_FH_RX;
1477         if (inta_fh & CSR49_FH_INT_TX_MASK)
1478                 inta |= CSR_INT_BIT_FH_TX;
1479
1480         /* Now service all interrupt bits discovered above. */
1481         if (inta & CSR_INT_BIT_HW_ERR) {
1482                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
1483
1484                 /* Tell the device to stop sending interrupts */
1485                 iwl_disable_interrupts(priv);
1486
1487                 iwl_irq_handle_error(priv);
1488
1489                 handled |= CSR_INT_BIT_HW_ERR;
1490
1491                 spin_unlock_irqrestore(&priv->lock, flags);
1492
1493                 return;
1494         }
1495
1496 #ifdef CONFIG_IWLWIFI_DEBUG
1497         if (priv->debug_level & (IWL_DL_ISR)) {
1498                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1499                 if (inta & CSR_INT_BIT_SCD)
1500                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1501                                       "the frame/frames.\n");
1502
1503                 /* Alive notification via Rx interrupt will do the real work */
1504                 if (inta & CSR_INT_BIT_ALIVE)
1505                         IWL_DEBUG_ISR("Alive interrupt\n");
1506         }
1507 #endif
1508         /* Safely ignore these bits for debug checks below */
1509         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1510
1511         /* HW RF KILL switch toggled */
1512         if (inta & CSR_INT_BIT_RF_KILL) {
1513                 int hw_rf_kill = 0;
1514                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1515                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1516                         hw_rf_kill = 1;
1517
1518                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1519                                 hw_rf_kill ? "disable radio" : "enable radio");
1520
1521                 /* driver only loads ucode once setting the interface up.
1522                  * the driver allows loading the ucode even if the radio
1523                  * is killed. Hence update the killswitch state here. The
1524                  * rfkill handler will care about restarting if needed.
1525                  */
1526                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1527                         if (hw_rf_kill)
1528                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1529                         else
1530                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1531                         queue_work(priv->workqueue, &priv->rf_kill);
1532                 }
1533
1534                 handled |= CSR_INT_BIT_RF_KILL;
1535         }
1536
1537         /* Chip got too hot and stopped itself */
1538         if (inta & CSR_INT_BIT_CT_KILL) {
1539                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1540                 handled |= CSR_INT_BIT_CT_KILL;
1541         }
1542
1543         /* Error detected by uCode */
1544         if (inta & CSR_INT_BIT_SW_ERR) {
1545                 IWL_ERR(priv, "Microcode SW error detected. "
1546                         " Restarting 0x%X.\n", inta);
1547                 iwl_irq_handle_error(priv);
1548                 handled |= CSR_INT_BIT_SW_ERR;
1549         }
1550
1551         /* uCode wakes up after power-down sleep */
1552         if (inta & CSR_INT_BIT_WAKEUP) {
1553                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1554                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1555                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1556                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1557                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1558                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1559                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1560                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1561
1562                 handled |= CSR_INT_BIT_WAKEUP;
1563         }
1564
1565         /* All uCode command responses, including Tx command responses,
1566          * Rx "responses" (frame-received notification), and other
1567          * notifications from uCode come through here*/
1568         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1569                 iwl_rx_handle(priv);
1570                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1571         }
1572
1573         if (inta & CSR_INT_BIT_FH_TX) {
1574                 IWL_DEBUG_ISR("Tx interrupt\n");
1575                 handled |= CSR_INT_BIT_FH_TX;
1576                 /* FH finished to write, send event */
1577                 priv->ucode_write_complete = 1;
1578                 wake_up_interruptible(&priv->wait_command_queue);
1579         }
1580
1581         if (inta & ~handled)
1582                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1583
1584         if (inta & ~CSR_INI_SET_MASK) {
1585                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1586                          inta & ~CSR_INI_SET_MASK);
1587                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1588         }
1589
1590         /* Re-enable all interrupts */
1591         /* only Re-enable if diabled by irq */
1592         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1593                 iwl_enable_interrupts(priv);
1594
1595 #ifdef CONFIG_IWLWIFI_DEBUG
1596         if (priv->debug_level & (IWL_DL_ISR)) {
1597                 inta = iwl_read32(priv, CSR_INT);
1598                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1599                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1600                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1601                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1602         }
1603 #endif
1604         spin_unlock_irqrestore(&priv->lock, flags);
1605 }
1606
1607 static irqreturn_t iwl_isr(int irq, void *data)
1608 {
1609         struct iwl_priv *priv = data;
1610         u32 inta, inta_mask;
1611         u32 inta_fh;
1612         if (!priv)
1613                 return IRQ_NONE;
1614
1615         spin_lock(&priv->lock);
1616
1617         /* Disable (but don't clear!) interrupts here to avoid
1618          *    back-to-back ISRs and sporadic interrupts from our NIC.
1619          * If we have something to service, the tasklet will re-enable ints.
1620          * If we *don't* have something, we'll re-enable before leaving here. */
1621         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1622         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1623
1624         /* Discover which interrupts are active/pending */
1625         inta = iwl_read32(priv, CSR_INT);
1626         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1627
1628         /* Ignore interrupt if there's nothing in NIC to service.
1629          * This may be due to IRQ shared with another device,
1630          * or due to sporadic interrupts thrown from our NIC. */
1631         if (!inta && !inta_fh) {
1632                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1633                 goto none;
1634         }
1635
1636         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1637                 /* Hardware disappeared. It might have already raised
1638                  * an interrupt */
1639                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1640                 goto unplugged;
1641         }
1642
1643         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1644                       inta, inta_mask, inta_fh);
1645
1646         inta &= ~CSR_INT_BIT_SCD;
1647
1648         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1649         if (likely(inta || inta_fh))
1650                 tasklet_schedule(&priv->irq_tasklet);
1651
1652  unplugged:
1653         spin_unlock(&priv->lock);
1654         return IRQ_HANDLED;
1655
1656  none:
1657         /* re-enable interrupts here since we don't have anything to service. */
1658         /* only Re-enable if diabled by irq */
1659         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1660                 iwl_enable_interrupts(priv);
1661         spin_unlock(&priv->lock);
1662         return IRQ_NONE;
1663 }
1664
1665 /******************************************************************************
1666  *
1667  * uCode download functions
1668  *
1669  ******************************************************************************/
1670
1671 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1672 {
1673         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1674         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1675         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1676         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1677         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1678         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1679 }
1680
1681 static void iwl_nic_start(struct iwl_priv *priv)
1682 {
1683         /* Remove all resets to allow NIC to operate */
1684         iwl_write32(priv, CSR_RESET, 0);
1685 }
1686
1687
1688 /**
1689  * iwl_read_ucode - Read uCode images from disk file.
1690  *
1691  * Copy into buffers for card to fetch via bus-mastering
1692  */
1693 static int iwl_read_ucode(struct iwl_priv *priv)
1694 {
1695         struct iwl_ucode *ucode;
1696         int ret = -EINVAL, index;
1697         const struct firmware *ucode_raw;
1698         const char *name_pre = priv->cfg->fw_name_pre;
1699         const unsigned int api_max = priv->cfg->ucode_api_max;
1700         const unsigned int api_min = priv->cfg->ucode_api_min;
1701         char buf[25];
1702         u8 *src;
1703         size_t len;
1704         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1705
1706         /* Ask kernel firmware_class module to get the boot firmware off disk.
1707          * request_firmware() is synchronous, file is in memory on return. */
1708         for (index = api_max; index >= api_min; index--) {
1709                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1710                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1711                 if (ret < 0) {
1712                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
1713                                   buf, ret);
1714                         if (ret == -ENOENT)
1715                                 continue;
1716                         else
1717                                 goto error;
1718                 } else {
1719                         if (index < api_max)
1720                                 IWL_ERR(priv, "Loaded firmware %s, "
1721                                         "which is deprecated. "
1722                                         "Please use API v%u instead.\n",
1723                                           buf, api_max);
1724
1725                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1726                                        buf, ucode_raw->size);
1727                         break;
1728                 }
1729         }
1730
1731         if (ret < 0)
1732                 goto error;
1733
1734         /* Make sure that we got at least our header! */
1735         if (ucode_raw->size < sizeof(*ucode)) {
1736                 IWL_ERR(priv, "File size way too small!\n");
1737                 ret = -EINVAL;
1738                 goto err_release;
1739         }
1740
1741         /* Data from ucode file:  header followed by uCode images */
1742         ucode = (void *)ucode_raw->data;
1743
1744         priv->ucode_ver = le32_to_cpu(ucode->ver);
1745         api_ver = IWL_UCODE_API(priv->ucode_ver);
1746         inst_size = le32_to_cpu(ucode->inst_size);
1747         data_size = le32_to_cpu(ucode->data_size);
1748         init_size = le32_to_cpu(ucode->init_size);
1749         init_data_size = le32_to_cpu(ucode->init_data_size);
1750         boot_size = le32_to_cpu(ucode->boot_size);
1751
1752         /* api_ver should match the api version forming part of the
1753          * firmware filename ... but we don't check for that and only rely
1754          * on the API version read from firware header from here on forward */
1755
1756         if (api_ver < api_min || api_ver > api_max) {
1757                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1758                           "Driver supports v%u, firmware is v%u.\n",
1759                           api_max, api_ver);
1760                 priv->ucode_ver = 0;
1761                 ret = -EINVAL;
1762                 goto err_release;
1763         }
1764         if (api_ver != api_max)
1765                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1766                           "got v%u. New firmware can be obtained "
1767                           "from http://www.intellinuxwireless.org.\n",
1768                           api_max, api_ver);
1769
1770         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1771                IWL_UCODE_MAJOR(priv->ucode_ver),
1772                IWL_UCODE_MINOR(priv->ucode_ver),
1773                IWL_UCODE_API(priv->ucode_ver),
1774                IWL_UCODE_SERIAL(priv->ucode_ver));
1775
1776         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1777                        priv->ucode_ver);
1778         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1779                        inst_size);
1780         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1781                        data_size);
1782         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1783                        init_size);
1784         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1785                        init_data_size);
1786         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1787                        boot_size);
1788
1789         /* Verify size of file vs. image size info in file's header */
1790         if (ucode_raw->size < sizeof(*ucode) +
1791                 inst_size + data_size + init_size +
1792                 init_data_size + boot_size) {
1793
1794                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1795                                (int)ucode_raw->size);
1796                 ret = -EINVAL;
1797                 goto err_release;
1798         }
1799
1800         /* Verify that uCode images will fit in card's SRAM */
1801         if (inst_size > priv->hw_params.max_inst_size) {
1802                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1803                                inst_size);
1804                 ret = -EINVAL;
1805                 goto err_release;
1806         }
1807
1808         if (data_size > priv->hw_params.max_data_size) {
1809                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1810                                 data_size);
1811                 ret = -EINVAL;
1812                 goto err_release;
1813         }
1814         if (init_size > priv->hw_params.max_inst_size) {
1815                 IWL_DEBUG_INFO
1816                     ("uCode init instr len %d too large to fit in\n",
1817                       init_size);
1818                 ret = -EINVAL;
1819                 goto err_release;
1820         }
1821         if (init_data_size > priv->hw_params.max_data_size) {
1822                 IWL_DEBUG_INFO
1823                     ("uCode init data len %d too large to fit in\n",
1824                       init_data_size);
1825                 ret = -EINVAL;
1826                 goto err_release;
1827         }
1828         if (boot_size > priv->hw_params.max_bsm_size) {
1829                 IWL_DEBUG_INFO
1830                     ("uCode boot instr len %d too large to fit in\n",
1831                       boot_size);
1832                 ret = -EINVAL;
1833                 goto err_release;
1834         }
1835
1836         /* Allocate ucode buffers for card's bus-master loading ... */
1837
1838         /* Runtime instructions and 2 copies of data:
1839          * 1) unmodified from disk
1840          * 2) backup cache for save/restore during power-downs */
1841         priv->ucode_code.len = inst_size;
1842         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1843
1844         priv->ucode_data.len = data_size;
1845         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1846
1847         priv->ucode_data_backup.len = data_size;
1848         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1849
1850         /* Initialization instructions and data */
1851         if (init_size && init_data_size) {
1852                 priv->ucode_init.len = init_size;
1853                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1854
1855                 priv->ucode_init_data.len = init_data_size;
1856                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1857
1858                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1859                         goto err_pci_alloc;
1860         }
1861
1862         /* Bootstrap (instructions only, no data) */
1863         if (boot_size) {
1864                 priv->ucode_boot.len = boot_size;
1865                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1866
1867                 if (!priv->ucode_boot.v_addr)
1868                         goto err_pci_alloc;
1869         }
1870
1871         /* Copy images into buffers for card's bus-master reads ... */
1872
1873         /* Runtime instructions (first block of data in file) */
1874         src = &ucode->data[0];
1875         len = priv->ucode_code.len;
1876         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1877         memcpy(priv->ucode_code.v_addr, src, len);
1878         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1879                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1880
1881         /* Runtime data (2nd block)
1882          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1883         src = &ucode->data[inst_size];
1884         len = priv->ucode_data.len;
1885         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1886         memcpy(priv->ucode_data.v_addr, src, len);
1887         memcpy(priv->ucode_data_backup.v_addr, src, len);
1888
1889         /* Initialization instructions (3rd block) */
1890         if (init_size) {
1891                 src = &ucode->data[inst_size + data_size];
1892                 len = priv->ucode_init.len;
1893                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1894                                 len);
1895                 memcpy(priv->ucode_init.v_addr, src, len);
1896         }
1897
1898         /* Initialization data (4th block) */
1899         if (init_data_size) {
1900                 src = &ucode->data[inst_size + data_size + init_size];
1901                 len = priv->ucode_init_data.len;
1902                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1903                                len);
1904                 memcpy(priv->ucode_init_data.v_addr, src, len);
1905         }
1906
1907         /* Bootstrap instructions (5th block) */
1908         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1909         len = priv->ucode_boot.len;
1910         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1911         memcpy(priv->ucode_boot.v_addr, src, len);
1912
1913         /* We have our copies now, allow OS release its copies */
1914         release_firmware(ucode_raw);
1915         return 0;
1916
1917  err_pci_alloc:
1918         IWL_ERR(priv, "failed to allocate pci memory\n");
1919         ret = -ENOMEM;
1920         iwl_dealloc_ucode_pci(priv);
1921
1922  err_release:
1923         release_firmware(ucode_raw);
1924
1925  error:
1926         return ret;
1927 }
1928
1929 /* temporary */
1930 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1931                                  struct sk_buff *skb);
1932
1933 /**
1934  * iwl_alive_start - called after REPLY_ALIVE notification received
1935  *                   from protocol/runtime uCode (initialization uCode's
1936  *                   Alive gets handled by iwl_init_alive_start()).
1937  */
1938 static void iwl_alive_start(struct iwl_priv *priv)
1939 {
1940         int ret = 0;
1941
1942         IWL_DEBUG_INFO("Runtime Alive received.\n");
1943
1944         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1945                 /* We had an error bringing up the hardware, so take it
1946                  * all the way back down so we can try again */
1947                 IWL_DEBUG_INFO("Alive failed.\n");
1948                 goto restart;
1949         }
1950
1951         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1952          * This is a paranoid check, because we would not have gotten the
1953          * "runtime" alive if code weren't properly loaded.  */
1954         if (iwl_verify_ucode(priv)) {
1955                 /* Runtime instruction load was bad;
1956                  * take it all the way back down so we can try again */
1957                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1958                 goto restart;
1959         }
1960
1961         iwl_clear_stations_table(priv);
1962         ret = priv->cfg->ops->lib->alive_notify(priv);
1963         if (ret) {
1964                 IWL_WARN(priv,
1965                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
1966                 goto restart;
1967         }
1968
1969         /* After the ALIVE response, we can send host commands to the uCode */
1970         set_bit(STATUS_ALIVE, &priv->status);
1971
1972         if (iwl_is_rfkill(priv))
1973                 return;
1974
1975         ieee80211_wake_queues(priv->hw);
1976
1977         priv->active_rate = priv->rates_mask;
1978         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1979
1980         if (iwl_is_associated(priv)) {
1981                 struct iwl_rxon_cmd *active_rxon =
1982                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1983
1984                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1985                        sizeof(priv->staging_rxon));
1986                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1987         } else {
1988                 /* Initialize our rx_config data */
1989                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1990                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1991         }
1992
1993         /* Configure Bluetooth device coexistence support */
1994         iwl_send_bt_config(priv);
1995
1996         iwl_reset_run_time_calib(priv);
1997
1998         /* Configure the adapter for unassociated operation */
1999         iwl_commit_rxon(priv);
2000
2001         /* At this point, the NIC is initialized and operational */
2002         iwl_rf_kill_ct_config(priv);
2003
2004         iwl_leds_register(priv);
2005
2006         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2007         set_bit(STATUS_READY, &priv->status);
2008         wake_up_interruptible(&priv->wait_command_queue);
2009
2010         if (priv->error_recovering)
2011                 iwl_error_recovery(priv);
2012
2013         iwl_power_update_mode(priv, 1);
2014
2015         /* reassociate for ADHOC mode */
2016         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2017                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2018                                                                 priv->vif);
2019                 if (beacon)
2020                         iwl_mac_beacon_update(priv->hw, beacon);
2021         }
2022
2023
2024         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2025                 iwl_set_mode(priv, priv->iw_mode);
2026
2027         return;
2028
2029  restart:
2030         queue_work(priv->workqueue, &priv->restart);
2031 }
2032
2033 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2034
2035 static void __iwl_down(struct iwl_priv *priv)
2036 {
2037         unsigned long flags;
2038         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2039
2040         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2041
2042         if (!exit_pending)
2043                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2044
2045         iwl_leds_unregister(priv);
2046
2047         iwl_clear_stations_table(priv);
2048
2049         /* Unblock any waiting calls */
2050         wake_up_interruptible_all(&priv->wait_command_queue);
2051
2052         /* Wipe out the EXIT_PENDING status bit if we are not actually
2053          * exiting the module */
2054         if (!exit_pending)
2055                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2056
2057         /* stop and reset the on-board processor */
2058         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2059
2060         /* tell the device to stop sending interrupts */
2061         spin_lock_irqsave(&priv->lock, flags);
2062         iwl_disable_interrupts(priv);
2063         spin_unlock_irqrestore(&priv->lock, flags);
2064         iwl_synchronize_irq(priv);
2065
2066         if (priv->mac80211_registered)
2067                 ieee80211_stop_queues(priv->hw);
2068
2069         /* If we have not previously called iwl_init() then
2070          * clear all bits but the RF Kill and SUSPEND bits and return */
2071         if (!iwl_is_init(priv)) {
2072                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2073                                         STATUS_RF_KILL_HW |
2074                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2075                                         STATUS_RF_KILL_SW |
2076                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2077                                         STATUS_GEO_CONFIGURED |
2078                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2079                                         STATUS_IN_SUSPEND |
2080                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2081                                         STATUS_EXIT_PENDING;
2082                 goto exit;
2083         }
2084
2085         /* ...otherwise clear out all the status bits but the RF Kill and
2086          * SUSPEND bits and continue taking the NIC down. */
2087         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2088                                 STATUS_RF_KILL_HW |
2089                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2090                                 STATUS_RF_KILL_SW |
2091                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2092                                 STATUS_GEO_CONFIGURED |
2093                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2094                                 STATUS_IN_SUSPEND |
2095                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2096                                 STATUS_FW_ERROR |
2097                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2098                                 STATUS_EXIT_PENDING;
2099
2100         spin_lock_irqsave(&priv->lock, flags);
2101         iwl_clear_bit(priv, CSR_GP_CNTRL,
2102                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2103         spin_unlock_irqrestore(&priv->lock, flags);
2104
2105         iwl_txq_ctx_stop(priv);
2106         iwl_rxq_stop(priv);
2107
2108         spin_lock_irqsave(&priv->lock, flags);
2109         if (!iwl_grab_nic_access(priv)) {
2110                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2111                                          APMG_CLK_VAL_DMA_CLK_RQT);
2112                 iwl_release_nic_access(priv);
2113         }
2114         spin_unlock_irqrestore(&priv->lock, flags);
2115
2116         udelay(5);
2117
2118         /* FIXME: apm_ops.suspend(priv) */
2119         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2120                 priv->cfg->ops->lib->apm_ops.stop(priv);
2121         else
2122                 priv->cfg->ops->lib->apm_ops.reset(priv);
2123  exit:
2124         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2125
2126         if (priv->ibss_beacon)
2127                 dev_kfree_skb(priv->ibss_beacon);
2128         priv->ibss_beacon = NULL;
2129
2130         /* clear out any free frames */
2131         iwl_clear_free_frames(priv);
2132 }
2133
2134 static void iwl_down(struct iwl_priv *priv)
2135 {
2136         mutex_lock(&priv->mutex);
2137         __iwl_down(priv);
2138         mutex_unlock(&priv->mutex);
2139
2140         iwl_cancel_deferred_work(priv);
2141 }
2142
2143 #define MAX_HW_RESTARTS 5
2144
2145 static int __iwl_up(struct iwl_priv *priv)
2146 {
2147         int i;
2148         int ret;
2149
2150         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2151                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2152                 return -EIO;
2153         }
2154
2155         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2156                 IWL_ERR(priv, "ucode not available for device bringup\n");
2157                 return -EIO;
2158         }
2159
2160         /* If platform's RF_KILL switch is NOT set to KILL */
2161         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2162                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2163         else
2164                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2165
2166         if (iwl_is_rfkill(priv)) {
2167                 iwl_enable_interrupts(priv);
2168                 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
2169                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2170                 return 0;
2171         }
2172
2173         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2174
2175         ret = iwl_hw_nic_init(priv);
2176         if (ret) {
2177                 IWL_ERR(priv, "Unable to init nic\n");
2178                 return ret;
2179         }
2180
2181         /* make sure rfkill handshake bits are cleared */
2182         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2183         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2184                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2185
2186         /* clear (again), then enable host interrupts */
2187         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2188         iwl_enable_interrupts(priv);
2189
2190         /* really make sure rfkill handshake bits are cleared */
2191         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2192         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2193
2194         /* Copy original ucode data image from disk into backup cache.
2195          * This will be used to initialize the on-board processor's
2196          * data SRAM for a clean start when the runtime program first loads. */
2197         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2198                priv->ucode_data.len);
2199
2200         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2201
2202                 iwl_clear_stations_table(priv);
2203
2204                 /* load bootstrap state machine,
2205                  * load bootstrap program into processor's memory,
2206                  * prepare to load the "initialize" uCode */
2207                 ret = priv->cfg->ops->lib->load_ucode(priv);
2208
2209                 if (ret) {
2210                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2211                                 ret);
2212                         continue;
2213                 }
2214
2215                 /* Clear out the uCode error bit if it is set */
2216                 clear_bit(STATUS_FW_ERROR, &priv->status);
2217
2218                 /* start card; "initialize" will load runtime ucode */
2219                 iwl_nic_start(priv);
2220
2221                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2222
2223                 return 0;
2224         }
2225
2226         set_bit(STATUS_EXIT_PENDING, &priv->status);
2227         __iwl_down(priv);
2228         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2229
2230         /* tried to restart and config the device for as long as our
2231          * patience could withstand */
2232         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2233         return -EIO;
2234 }
2235
2236
2237 /*****************************************************************************
2238  *
2239  * Workqueue callbacks
2240  *
2241  *****************************************************************************/
2242
2243 static void iwl_bg_init_alive_start(struct work_struct *data)
2244 {
2245         struct iwl_priv *priv =
2246             container_of(data, struct iwl_priv, init_alive_start.work);
2247
2248         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2249                 return;
2250
2251         mutex_lock(&priv->mutex);
2252         priv->cfg->ops->lib->init_alive_start(priv);
2253         mutex_unlock(&priv->mutex);
2254 }
2255
2256 static void iwl_bg_alive_start(struct work_struct *data)
2257 {
2258         struct iwl_priv *priv =
2259             container_of(data, struct iwl_priv, alive_start.work);
2260
2261         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2262                 return;
2263
2264         mutex_lock(&priv->mutex);
2265         iwl_alive_start(priv);
2266         mutex_unlock(&priv->mutex);
2267 }
2268
2269 static void iwl_bg_rf_kill(struct work_struct *work)
2270 {
2271         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2272
2273         wake_up_interruptible(&priv->wait_command_queue);
2274
2275         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2276                 return;
2277
2278         mutex_lock(&priv->mutex);
2279
2280         if (!iwl_is_rfkill(priv)) {
2281                 IWL_DEBUG(IWL_DL_RF_KILL,
2282                           "HW and/or SW RF Kill no longer active, restarting "
2283                           "device\n");
2284                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
2285                      test_bit(STATUS_ALIVE, &priv->status))
2286                         queue_work(priv->workqueue, &priv->restart);
2287         } else {
2288                 /* make sure mac80211 stop sending Tx frame */
2289                 if (priv->mac80211_registered)
2290                         ieee80211_stop_queues(priv->hw);
2291
2292                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2293                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2294                                           "disabled by SW switch\n");
2295                 else
2296                         IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
2297                                     "Kill switch must be turned off for "
2298                                     "wireless networking to work.\n");
2299         }
2300         mutex_unlock(&priv->mutex);
2301         iwl_rfkill_set_hw_state(priv);
2302 }
2303
2304 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2305 {
2306         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2307                         run_time_calib_work);
2308
2309         mutex_lock(&priv->mutex);
2310
2311         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2312             test_bit(STATUS_SCANNING, &priv->status)) {
2313                 mutex_unlock(&priv->mutex);
2314                 return;
2315         }
2316
2317         if (priv->start_calib) {
2318                 iwl_chain_noise_calibration(priv, &priv->statistics);
2319
2320                 iwl_sensitivity_calibration(priv, &priv->statistics);
2321         }
2322
2323         mutex_unlock(&priv->mutex);
2324         return;
2325 }
2326
2327 static void iwl_bg_up(struct work_struct *data)
2328 {
2329         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2330
2331         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2332                 return;
2333
2334         mutex_lock(&priv->mutex);
2335         __iwl_up(priv);
2336         mutex_unlock(&priv->mutex);
2337         iwl_rfkill_set_hw_state(priv);
2338 }
2339
2340 static void iwl_bg_restart(struct work_struct *data)
2341 {
2342         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2343
2344         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2345                 return;
2346
2347         iwl_down(priv);
2348         queue_work(priv->workqueue, &priv->up);
2349 }
2350
2351 static void iwl_bg_rx_replenish(struct work_struct *data)
2352 {
2353         struct iwl_priv *priv =
2354             container_of(data, struct iwl_priv, rx_replenish);
2355
2356         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2357                 return;
2358
2359         mutex_lock(&priv->mutex);
2360         iwl_rx_replenish(priv);
2361         mutex_unlock(&priv->mutex);
2362 }
2363
2364 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2365
2366 static void iwl_post_associate(struct iwl_priv *priv)
2367 {
2368         struct ieee80211_conf *conf = NULL;
2369         int ret = 0;
2370         unsigned long flags;
2371
2372         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2373                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2374                 return;
2375         }
2376
2377         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2378                         priv->assoc_id, priv->active_rxon.bssid_addr);
2379
2380
2381         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2382                 return;
2383
2384
2385         if (!priv->vif || !priv->is_open)
2386                 return;
2387
2388         iwl_power_cancel_timeout(priv);
2389         iwl_scan_cancel_timeout(priv, 200);
2390
2391         conf = ieee80211_get_hw_conf(priv->hw);
2392
2393         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2394         iwl_commit_rxon(priv);
2395
2396         iwl_setup_rxon_timing(priv);
2397         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2398                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2399         if (ret)
2400                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2401                             "Attempting to continue.\n");
2402
2403         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2404
2405         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2406
2407         iwl_set_rxon_chain(priv);
2408         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2409
2410         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2411                         priv->assoc_id, priv->beacon_int);
2412
2413         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2414                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2415         else
2416                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2417
2418         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2419                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2420                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2421                 else
2422                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2423
2424                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2425                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2426
2427         }
2428
2429         iwl_commit_rxon(priv);
2430
2431         switch (priv->iw_mode) {
2432         case NL80211_IFTYPE_STATION:
2433                 break;
2434
2435         case NL80211_IFTYPE_ADHOC:
2436
2437                 /* assume default assoc id */
2438                 priv->assoc_id = 1;
2439
2440                 iwl_rxon_add_station(priv, priv->bssid, 0);
2441                 iwl_send_beacon_cmd(priv);
2442
2443                 break;
2444
2445         default:
2446                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2447                           __func__, priv->iw_mode);
2448                 break;
2449         }
2450
2451         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2452                 priv->assoc_station_added = 1;
2453
2454         spin_lock_irqsave(&priv->lock, flags);
2455         iwl_activate_qos(priv, 0);
2456         spin_unlock_irqrestore(&priv->lock, flags);
2457
2458         /* the chain noise calibration will enabled PM upon completion
2459          * If chain noise has already been run, then we need to enable
2460          * power management here */
2461         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2462                 iwl_power_enable_management(priv);
2463
2464         /* Enable Rx differential gain and sensitivity calibrations */
2465         iwl_chain_noise_reset(priv);
2466         priv->start_calib = 1;
2467
2468 }
2469
2470 /*****************************************************************************
2471  *
2472  * mac80211 entry point functions
2473  *
2474  *****************************************************************************/
2475
2476 #define UCODE_READY_TIMEOUT     (4 * HZ)
2477
2478 static int iwl_mac_start(struct ieee80211_hw *hw)
2479 {
2480         struct iwl_priv *priv = hw->priv;
2481         int ret;
2482
2483         IWL_DEBUG_MAC80211("enter\n");
2484
2485         /* we should be verifying the device is ready to be opened */
2486         mutex_lock(&priv->mutex);
2487
2488         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2489         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2490          * ucode filename and max sizes are card-specific. */
2491
2492         if (!priv->ucode_code.len) {
2493                 ret = iwl_read_ucode(priv);
2494                 if (ret) {
2495                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2496                         mutex_unlock(&priv->mutex);
2497                         return ret;
2498                 }
2499         }
2500
2501         ret = __iwl_up(priv);
2502
2503         mutex_unlock(&priv->mutex);
2504
2505         iwl_rfkill_set_hw_state(priv);
2506
2507         if (ret)
2508                 return ret;
2509
2510         if (iwl_is_rfkill(priv))
2511                 goto out;
2512
2513         IWL_DEBUG_INFO("Start UP work done.\n");
2514
2515         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2516                 return 0;
2517
2518         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2519          * mac80211 will not be run successfully. */
2520         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2521                         test_bit(STATUS_READY, &priv->status),
2522                         UCODE_READY_TIMEOUT);
2523         if (!ret) {
2524                 if (!test_bit(STATUS_READY, &priv->status)) {
2525                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2526                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2527                         return -ETIMEDOUT;
2528                 }
2529         }
2530
2531 out:
2532         priv->is_open = 1;
2533         IWL_DEBUG_MAC80211("leave\n");
2534         return 0;
2535 }
2536
2537 static void iwl_mac_stop(struct ieee80211_hw *hw)
2538 {
2539         struct iwl_priv *priv = hw->priv;
2540
2541         IWL_DEBUG_MAC80211("enter\n");
2542
2543         if (!priv->is_open) {
2544                 IWL_DEBUG_MAC80211("leave - skip\n");
2545                 return;
2546         }
2547
2548         priv->is_open = 0;
2549
2550         if (iwl_is_ready_rf(priv)) {
2551                 /* stop mac, cancel any scan request and clear
2552                  * RXON_FILTER_ASSOC_MSK BIT
2553                  */
2554                 mutex_lock(&priv->mutex);
2555                 iwl_scan_cancel_timeout(priv, 100);
2556                 mutex_unlock(&priv->mutex);
2557         }
2558
2559         iwl_down(priv);
2560
2561         flush_workqueue(priv->workqueue);
2562
2563         /* enable interrupts again in order to receive rfkill changes */
2564         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2565         iwl_enable_interrupts(priv);
2566
2567         IWL_DEBUG_MAC80211("leave\n");
2568 }
2569
2570 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2571 {
2572         struct iwl_priv *priv = hw->priv;
2573
2574         IWL_DEBUG_MACDUMP("enter\n");
2575
2576         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2577                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2578
2579         if (iwl_tx_skb(priv, skb))
2580                 dev_kfree_skb_any(skb);
2581
2582         IWL_DEBUG_MACDUMP("leave\n");
2583         return NETDEV_TX_OK;
2584 }
2585
2586 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2587                                  struct ieee80211_if_init_conf *conf)
2588 {
2589         struct iwl_priv *priv = hw->priv;
2590         unsigned long flags;
2591
2592         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2593
2594         if (priv->vif) {
2595                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2596                 return -EOPNOTSUPP;
2597         }
2598
2599         spin_lock_irqsave(&priv->lock, flags);
2600         priv->vif = conf->vif;
2601         priv->iw_mode = conf->type;
2602
2603         spin_unlock_irqrestore(&priv->lock, flags);
2604
2605         mutex_lock(&priv->mutex);
2606
2607         if (conf->mac_addr) {
2608                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2609                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2610         }
2611
2612         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2613                 /* we are not ready, will run again when ready */
2614                 set_bit(STATUS_MODE_PENDING, &priv->status);
2615
2616         mutex_unlock(&priv->mutex);
2617
2618         IWL_DEBUG_MAC80211("leave\n");
2619         return 0;
2620 }
2621
2622 /**
2623  * iwl_mac_config - mac80211 config callback
2624  *
2625  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2626  * be set inappropriately and the driver currently sets the hardware up to
2627  * use it whenever needed.
2628  */
2629 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2630 {
2631         struct iwl_priv *priv = hw->priv;
2632         const struct iwl_channel_info *ch_info;
2633         struct ieee80211_conf *conf = &hw->conf;
2634         unsigned long flags;
2635         int ret = 0;
2636         u16 channel;
2637
2638         mutex_lock(&priv->mutex);
2639         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2640
2641         priv->current_ht_config.is_ht = conf_is_ht(conf);
2642
2643         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2644                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2645                 goto out;
2646         }
2647
2648         if (!conf->radio_enabled)
2649                 iwl_radio_kill_sw_disable_radio(priv);
2650
2651         if (!iwl_is_ready(priv)) {
2652                 IWL_DEBUG_MAC80211("leave - not ready\n");
2653                 ret = -EIO;
2654                 goto out;
2655         }
2656
2657         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2658                      test_bit(STATUS_SCANNING, &priv->status))) {
2659                 IWL_DEBUG_MAC80211("leave - scanning\n");
2660                 mutex_unlock(&priv->mutex);
2661                 return 0;
2662         }
2663
2664         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2665         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2666         if (!is_channel_valid(ch_info)) {
2667                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2668                 ret = -EINVAL;
2669                 goto out;
2670         }
2671
2672         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2673             !is_channel_ibss(ch_info)) {
2674                 IWL_ERR(priv, "channel %d in band %d not IBSS channel\n",
2675                         conf->channel->hw_value, conf->channel->band);
2676                 ret = -EINVAL;
2677                 goto out;
2678         }
2679
2680         spin_lock_irqsave(&priv->lock, flags);
2681
2682
2683         /* if we are switching from ht to 2.4 clear flags
2684          * from any ht related info since 2.4 does not
2685          * support ht */
2686         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2687 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2688             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2689 #endif
2690         )
2691                 priv->staging_rxon.flags = 0;
2692
2693         iwl_set_rxon_channel(priv, conf->channel);
2694
2695         iwl_set_flags_for_band(priv, conf->channel->band);
2696
2697         /* The list of supported rates and rate mask can be different
2698          * for each band; since the band may have changed, reset
2699          * the rate mask to what mac80211 lists */
2700         iwl_set_rate(priv);
2701
2702         spin_unlock_irqrestore(&priv->lock, flags);
2703
2704 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2705         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2706                 iwl_hw_channel_switch(priv, conf->channel);
2707                 goto out;
2708         }
2709 #endif
2710
2711         if (!conf->radio_enabled) {
2712                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2713                 goto out;
2714         }
2715
2716         if (iwl_is_rfkill(priv)) {
2717                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2718                 ret = -EIO;
2719                 goto out;
2720         }
2721
2722         if (conf->flags & IEEE80211_CONF_PS)
2723                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2724         else
2725                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2726         if (ret)
2727                 IWL_DEBUG_MAC80211("Error setting power level\n");
2728
2729         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2730                            priv->tx_power_user_lmt, conf->power_level);
2731
2732         iwl_set_tx_power(priv, conf->power_level, false);
2733
2734         iwl_set_rate(priv);
2735
2736         if (memcmp(&priv->active_rxon,
2737                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2738                 iwl_commit_rxon(priv);
2739         else
2740                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2741
2742         IWL_DEBUG_MAC80211("leave\n");
2743
2744 out:
2745         mutex_unlock(&priv->mutex);
2746         return ret;
2747 }
2748
2749 static void iwl_config_ap(struct iwl_priv *priv)
2750 {
2751         int ret = 0;
2752         unsigned long flags;
2753
2754         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2755                 return;
2756
2757         /* The following should be done only at AP bring up */
2758         if (!iwl_is_associated(priv)) {
2759
2760                 /* RXON - unassoc (to set timing command) */
2761                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2762                 iwl_commit_rxon(priv);
2763
2764                 /* RXON Timing */
2765                 iwl_setup_rxon_timing(priv);
2766                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2767                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2768                 if (ret)
2769                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2770                                         "Attempting to continue.\n");
2771
2772                 iwl_set_rxon_chain(priv);
2773
2774                 /* FIXME: what should be the assoc_id for AP? */
2775                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2776                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2777                         priv->staging_rxon.flags |=
2778                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2779                 else
2780                         priv->staging_rxon.flags &=
2781                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2782
2783                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2784                         if (priv->assoc_capability &
2785                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2786                                 priv->staging_rxon.flags |=
2787                                         RXON_FLG_SHORT_SLOT_MSK;
2788                         else
2789                                 priv->staging_rxon.flags &=
2790                                         ~RXON_FLG_SHORT_SLOT_MSK;
2791
2792                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2793                                 priv->staging_rxon.flags &=
2794                                         ~RXON_FLG_SHORT_SLOT_MSK;
2795                 }
2796                 /* restore RXON assoc */
2797                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2798                 iwl_commit_rxon(priv);
2799                 spin_lock_irqsave(&priv->lock, flags);
2800                 iwl_activate_qos(priv, 1);
2801                 spin_unlock_irqrestore(&priv->lock, flags);
2802                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2803         }
2804         iwl_send_beacon_cmd(priv);
2805
2806         /* FIXME - we need to add code here to detect a totally new
2807          * configuration, reset the AP, unassoc, rxon timing, assoc,
2808          * clear sta table, add BCAST sta... */
2809 }
2810
2811
2812 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2813                                         struct ieee80211_vif *vif,
2814                                     struct ieee80211_if_conf *conf)
2815 {
2816         struct iwl_priv *priv = hw->priv;
2817         int rc;
2818
2819         if (conf == NULL)
2820                 return -EIO;
2821
2822         if (priv->vif != vif) {
2823                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2824                 return 0;
2825         }
2826
2827         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2828             conf->changed & IEEE80211_IFCC_BEACON) {
2829                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2830                 if (!beacon)
2831                         return -ENOMEM;
2832                 mutex_lock(&priv->mutex);
2833                 rc = iwl_mac_beacon_update(hw, beacon);
2834                 mutex_unlock(&priv->mutex);
2835                 if (rc)
2836                         return rc;
2837         }
2838
2839         if (!iwl_is_alive(priv))
2840                 return -EAGAIN;
2841
2842         mutex_lock(&priv->mutex);
2843
2844         if (conf->bssid)
2845                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2846
2847 /*
2848  * very dubious code was here; the probe filtering flag is never set:
2849  *
2850         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2851             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2852  */
2853
2854         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2855                 if (!conf->bssid) {
2856                         conf->bssid = priv->mac_addr;
2857                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2858                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2859                                            conf->bssid);
2860                 }
2861                 if (priv->ibss_beacon)
2862                         dev_kfree_skb(priv->ibss_beacon);
2863
2864                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2865         }
2866
2867         if (iwl_is_rfkill(priv))
2868                 goto done;
2869
2870         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2871             !is_multicast_ether_addr(conf->bssid)) {
2872                 /* If there is currently a HW scan going on in the background
2873                  * then we need to cancel it else the RXON below will fail. */
2874                 if (iwl_scan_cancel_timeout(priv, 100)) {
2875                         IWL_WARN(priv, "Aborted scan still in progress "
2876                                     "after 100ms\n");
2877                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2878                         mutex_unlock(&priv->mutex);
2879                         return -EAGAIN;
2880                 }
2881                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2882
2883                 /* TODO: Audit driver for usage of these members and see
2884                  * if mac80211 deprecates them (priv->bssid looks like it
2885                  * shouldn't be there, but I haven't scanned the IBSS code
2886                  * to verify) - jpk */
2887                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2888
2889                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2890                         iwl_config_ap(priv);
2891                 else {
2892                         rc = iwl_commit_rxon(priv);
2893                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2894                                 iwl_rxon_add_station(
2895                                         priv, priv->active_rxon.bssid_addr, 1);
2896                 }
2897
2898         } else {
2899                 iwl_scan_cancel_timeout(priv, 100);
2900                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2901                 iwl_commit_rxon(priv);
2902         }
2903
2904  done:
2905         IWL_DEBUG_MAC80211("leave\n");
2906         mutex_unlock(&priv->mutex);
2907
2908         return 0;
2909 }
2910
2911 static void iwl_configure_filter(struct ieee80211_hw *hw,
2912                                  unsigned int changed_flags,
2913                                  unsigned int *total_flags,
2914                                  int mc_count, struct dev_addr_list *mc_list)
2915 {
2916         struct iwl_priv *priv = hw->priv;
2917         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2918
2919         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2920                         changed_flags, *total_flags);
2921
2922         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2923                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2924                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2925                 else
2926                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2927         }
2928         if (changed_flags & FIF_ALLMULTI) {
2929                 if (*total_flags & FIF_ALLMULTI)
2930                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2931                 else
2932                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2933         }
2934         if (changed_flags & FIF_CONTROL) {
2935                 if (*total_flags & FIF_CONTROL)
2936                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2937                 else
2938                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2939         }
2940         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2941                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2942                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2943                 else
2944                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2945         }
2946
2947         /* We avoid iwl_commit_rxon here to commit the new filter flags
2948          * since mac80211 will call ieee80211_hw_config immediately.
2949          * (mc_list is not supported at this time). Otherwise, we need to
2950          * queue a background iwl_commit_rxon work.
2951          */
2952
2953         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2954                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2955 }
2956
2957 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2958                                      struct ieee80211_if_init_conf *conf)
2959 {
2960         struct iwl_priv *priv = hw->priv;
2961
2962         IWL_DEBUG_MAC80211("enter\n");
2963
2964         mutex_lock(&priv->mutex);
2965
2966         if (iwl_is_ready_rf(priv)) {
2967                 iwl_scan_cancel_timeout(priv, 100);
2968                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2969                 iwl_commit_rxon(priv);
2970         }
2971         if (priv->vif == conf->vif) {
2972                 priv->vif = NULL;
2973                 memset(priv->bssid, 0, ETH_ALEN);
2974         }
2975         mutex_unlock(&priv->mutex);
2976
2977         IWL_DEBUG_MAC80211("leave\n");
2978
2979 }
2980
2981 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2982 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2983                                      struct ieee80211_vif *vif,
2984                                      struct ieee80211_bss_conf *bss_conf,
2985                                      u32 changes)
2986 {
2987         struct iwl_priv *priv = hw->priv;
2988
2989         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2990
2991         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2992                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2993                                    bss_conf->use_short_preamble);
2994                 if (bss_conf->use_short_preamble)
2995                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2996                 else
2997                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2998         }
2999
3000         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3001                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3002                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3003                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3004                 else
3005                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3006         }
3007
3008         if (changes & BSS_CHANGED_HT) {
3009                 iwl_ht_conf(priv, bss_conf);
3010                 iwl_set_rxon_chain(priv);
3011         }
3012
3013         if (changes & BSS_CHANGED_ASSOC) {
3014                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3015                 /* This should never happen as this function should
3016                  * never be called from interrupt context. */
3017                 if (WARN_ON_ONCE(in_interrupt()))
3018                         return;
3019                 if (bss_conf->assoc) {
3020                         priv->assoc_id = bss_conf->aid;
3021                         priv->beacon_int = bss_conf->beacon_int;
3022                         priv->power_data.dtim_period = bss_conf->dtim_period;
3023                         priv->timestamp = bss_conf->timestamp;
3024                         priv->assoc_capability = bss_conf->assoc_capability;
3025
3026                         /* we have just associated, don't start scan too early
3027                          * leave time for EAPOL exchange to complete
3028                          */
3029                         priv->next_scan_jiffies = jiffies +
3030                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3031                         mutex_lock(&priv->mutex);
3032                         iwl_post_associate(priv);
3033                         mutex_unlock(&priv->mutex);
3034                 } else {
3035                         priv->assoc_id = 0;
3036                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3037                 }
3038         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3039                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3040                         iwl_send_rxon_assoc(priv);
3041         }
3042
3043 }
3044
3045 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3046 {
3047         unsigned long flags;
3048         struct iwl_priv *priv = hw->priv;
3049         int ret;
3050
3051         IWL_DEBUG_MAC80211("enter\n");
3052
3053         mutex_lock(&priv->mutex);
3054         spin_lock_irqsave(&priv->lock, flags);
3055
3056         if (!iwl_is_ready_rf(priv)) {
3057                 ret = -EIO;
3058                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3059                 goto out_unlock;
3060         }
3061
3062         /* We don't schedule scan within next_scan_jiffies period.
3063          * Avoid scanning during possible EAPOL exchange, return
3064          * success immediately.
3065          */
3066         if (priv->next_scan_jiffies &&
3067             time_after(priv->next_scan_jiffies, jiffies)) {
3068                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3069                 queue_work(priv->workqueue, &priv->scan_completed);
3070                 ret = 0;
3071                 goto out_unlock;
3072         }
3073
3074         /* if we just finished scan ask for delay */
3075         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3076             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3077                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3078                 queue_work(priv->workqueue, &priv->scan_completed);
3079                 ret = 0;
3080                 goto out_unlock;
3081         }
3082
3083         if (ssid_len) {
3084                 priv->one_direct_scan = 1;
3085                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3086                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3087         } else {
3088                 priv->one_direct_scan = 0;
3089         }
3090
3091         ret = iwl_scan_initiate(priv);
3092
3093         IWL_DEBUG_MAC80211("leave\n");
3094
3095 out_unlock:
3096         spin_unlock_irqrestore(&priv->lock, flags);
3097         mutex_unlock(&priv->mutex);
3098
3099         return ret;
3100 }
3101
3102 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3103                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3104                         u32 iv32, u16 *phase1key)
3105 {
3106
3107         struct iwl_priv *priv = hw->priv;
3108         IWL_DEBUG_MAC80211("enter\n");
3109
3110         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3111
3112         IWL_DEBUG_MAC80211("leave\n");
3113 }
3114
3115 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3116                            struct ieee80211_vif *vif,
3117                            struct ieee80211_sta *sta,
3118                            struct ieee80211_key_conf *key)
3119 {
3120         struct iwl_priv *priv = hw->priv;
3121         const u8 *addr;
3122         int ret;
3123         u8 sta_id;
3124         bool is_default_wep_key = false;
3125
3126         IWL_DEBUG_MAC80211("enter\n");
3127
3128         if (priv->hw_params.sw_crypto) {
3129                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3130                 return -EOPNOTSUPP;
3131         }
3132         addr = sta ? sta->addr : iwl_bcast_addr;
3133         sta_id = iwl_find_station(priv, addr);
3134         if (sta_id == IWL_INVALID_STATION) {
3135                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3136                                    addr);
3137                 return -EINVAL;
3138
3139         }
3140
3141         mutex_lock(&priv->mutex);
3142         iwl_scan_cancel_timeout(priv, 100);
3143         mutex_unlock(&priv->mutex);
3144
3145         /* If we are getting WEP group key and we didn't receive any key mapping
3146          * so far, we are in legacy wep mode (group key only), otherwise we are
3147          * in 1X mode.
3148          * In legacy wep mode, we use another host command to the uCode */
3149         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3150                 priv->iw_mode != NL80211_IFTYPE_AP) {
3151                 if (cmd == SET_KEY)
3152                         is_default_wep_key = !priv->key_mapping_key;
3153                 else
3154                         is_default_wep_key =
3155                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3156         }
3157
3158         switch (cmd) {
3159         case SET_KEY:
3160                 if (is_default_wep_key)
3161                         ret = iwl_set_default_wep_key(priv, key);
3162                 else
3163                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3164
3165                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3166                 break;
3167         case DISABLE_KEY:
3168                 if (is_default_wep_key)
3169                         ret = iwl_remove_default_wep_key(priv, key);
3170                 else
3171                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3172
3173                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3174                 break;
3175         default:
3176                 ret = -EINVAL;
3177         }
3178
3179         IWL_DEBUG_MAC80211("leave\n");
3180
3181         return ret;
3182 }
3183
3184 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3185                            const struct ieee80211_tx_queue_params *params)
3186 {
3187         struct iwl_priv *priv = hw->priv;
3188         unsigned long flags;
3189         int q;
3190
3191         IWL_DEBUG_MAC80211("enter\n");
3192
3193         if (!iwl_is_ready_rf(priv)) {
3194                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3195                 return -EIO;
3196         }
3197
3198         if (queue >= AC_NUM) {
3199                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3200                 return 0;
3201         }
3202
3203         q = AC_NUM - 1 - queue;
3204
3205         spin_lock_irqsave(&priv->lock, flags);
3206
3207         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3208         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3209         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3210         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3211                         cpu_to_le16((params->txop * 32));
3212
3213         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3214         priv->qos_data.qos_active = 1;
3215
3216         if (priv->iw_mode == NL80211_IFTYPE_AP)
3217                 iwl_activate_qos(priv, 1);
3218         else if (priv->assoc_id && iwl_is_associated(priv))
3219                 iwl_activate_qos(priv, 0);
3220
3221         spin_unlock_irqrestore(&priv->lock, flags);
3222
3223         IWL_DEBUG_MAC80211("leave\n");
3224         return 0;
3225 }
3226
3227 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3228                              enum ieee80211_ampdu_mlme_action action,
3229                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3230 {
3231         struct iwl_priv *priv = hw->priv;
3232
3233         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3234                      sta->addr, tid);
3235
3236         if (!(priv->cfg->sku & IWL_SKU_N))
3237                 return -EACCES;
3238
3239         switch (action) {
3240         case IEEE80211_AMPDU_RX_START:
3241                 IWL_DEBUG_HT("start Rx\n");
3242                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3243         case IEEE80211_AMPDU_RX_STOP:
3244                 IWL_DEBUG_HT("stop Rx\n");
3245                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3246         case IEEE80211_AMPDU_TX_START:
3247                 IWL_DEBUG_HT("start Tx\n");
3248                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3249         case IEEE80211_AMPDU_TX_STOP:
3250                 IWL_DEBUG_HT("stop Tx\n");
3251                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3252         default:
3253                 IWL_DEBUG_HT("unknown\n");
3254                 return -EINVAL;
3255                 break;
3256         }
3257         return 0;
3258 }
3259
3260 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3261                                 struct ieee80211_tx_queue_stats *stats)
3262 {
3263         struct iwl_priv *priv = hw->priv;
3264         int i, avail;
3265         struct iwl_tx_queue *txq;
3266         struct iwl_queue *q;
3267         unsigned long flags;
3268
3269         IWL_DEBUG_MAC80211("enter\n");
3270
3271         if (!iwl_is_ready_rf(priv)) {
3272                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3273                 return -EIO;
3274         }
3275
3276         spin_lock_irqsave(&priv->lock, flags);
3277
3278         for (i = 0; i < AC_NUM; i++) {
3279                 txq = &priv->txq[i];
3280                 q = &txq->q;
3281                 avail = iwl_queue_space(q);
3282
3283                 stats[i].len = q->n_window - avail;
3284                 stats[i].limit = q->n_window - q->high_mark;
3285                 stats[i].count = q->n_window;
3286
3287         }
3288         spin_unlock_irqrestore(&priv->lock, flags);
3289
3290         IWL_DEBUG_MAC80211("leave\n");
3291
3292         return 0;
3293 }
3294
3295 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3296                              struct ieee80211_low_level_stats *stats)
3297 {
3298         struct iwl_priv *priv = hw->priv;
3299
3300         priv = hw->priv;
3301         IWL_DEBUG_MAC80211("enter\n");
3302         IWL_DEBUG_MAC80211("leave\n");
3303
3304         return 0;
3305 }
3306
3307 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3308 {
3309         struct iwl_priv *priv = hw->priv;
3310         unsigned long flags;
3311
3312         mutex_lock(&priv->mutex);
3313         IWL_DEBUG_MAC80211("enter\n");
3314
3315         spin_lock_irqsave(&priv->lock, flags);
3316         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3317         spin_unlock_irqrestore(&priv->lock, flags);
3318
3319         iwl_reset_qos(priv);
3320
3321         spin_lock_irqsave(&priv->lock, flags);
3322         priv->assoc_id = 0;
3323         priv->assoc_capability = 0;
3324         priv->assoc_station_added = 0;
3325
3326         /* new association get rid of ibss beacon skb */
3327         if (priv->ibss_beacon)
3328                 dev_kfree_skb(priv->ibss_beacon);
3329
3330         priv->ibss_beacon = NULL;
3331
3332         priv->beacon_int = priv->hw->conf.beacon_int;
3333         priv->timestamp = 0;
3334         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3335                 priv->beacon_int = 0;
3336
3337         spin_unlock_irqrestore(&priv->lock, flags);
3338
3339         if (!iwl_is_ready_rf(priv)) {
3340                 IWL_DEBUG_MAC80211("leave - not ready\n");
3341                 mutex_unlock(&priv->mutex);
3342                 return;
3343         }
3344
3345         /* we are restarting association process
3346          * clear RXON_FILTER_ASSOC_MSK bit
3347          */
3348         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3349                 iwl_scan_cancel_timeout(priv, 100);
3350                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3351                 iwl_commit_rxon(priv);
3352         }
3353
3354         iwl_power_update_mode(priv, 0);
3355
3356         /* Per mac80211.h: This is only used in IBSS mode... */
3357         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3358
3359                 /* switch to CAM during association period.
3360                  * the ucode will block any association/authentication
3361                  * frome during assiciation period if it can not hear
3362                  * the AP because of PM. the timer enable PM back is
3363                  * association do not complete
3364                  */
3365                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3366                                                      IEEE80211_CHAN_RADAR))
3367                                 iwl_power_disable_management(priv, 3000);
3368
3369                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3370                 mutex_unlock(&priv->mutex);
3371                 return;
3372         }
3373
3374         iwl_set_rate(priv);
3375
3376         mutex_unlock(&priv->mutex);
3377
3378         IWL_DEBUG_MAC80211("leave\n");
3379 }
3380
3381 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3382 {
3383         struct iwl_priv *priv = hw->priv;
3384         unsigned long flags;
3385         __le64 timestamp;
3386
3387         IWL_DEBUG_MAC80211("enter\n");
3388
3389         if (!iwl_is_ready_rf(priv)) {
3390                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3391                 return -EIO;
3392         }
3393
3394         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3395                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3396                 return -EIO;
3397         }
3398
3399         spin_lock_irqsave(&priv->lock, flags);
3400
3401         if (priv->ibss_beacon)
3402                 dev_kfree_skb(priv->ibss_beacon);
3403
3404         priv->ibss_beacon = skb;
3405
3406         priv->assoc_id = 0;
3407         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3408         priv->timestamp = le64_to_cpu(timestamp);
3409
3410         IWL_DEBUG_MAC80211("leave\n");
3411         spin_unlock_irqrestore(&priv->lock, flags);
3412
3413         iwl_reset_qos(priv);
3414
3415         iwl_post_associate(priv);
3416
3417
3418         return 0;
3419 }
3420
3421 /*****************************************************************************
3422  *
3423  * sysfs attributes
3424  *
3425  *****************************************************************************/
3426
3427 #ifdef CONFIG_IWLWIFI_DEBUG
3428
3429 /*
3430  * The following adds a new attribute to the sysfs representation
3431  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3432  * used for controlling the debug level.
3433  *
3434  * See the level definitions in iwl for details.
3435  */
3436
3437 static ssize_t show_debug_level(struct device *d,
3438                                 struct device_attribute *attr, char *buf)
3439 {
3440         struct iwl_priv *priv = d->driver_data;
3441
3442         return sprintf(buf, "0x%08X\n", priv->debug_level);
3443 }
3444 static ssize_t store_debug_level(struct device *d,
3445                                 struct device_attribute *attr,
3446                                  const char *buf, size_t count)
3447 {
3448         struct iwl_priv *priv = d->driver_data;
3449         unsigned long val;
3450         int ret;
3451
3452         ret = strict_strtoul(buf, 0, &val);
3453         if (ret)
3454                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
3455         else
3456                 priv->debug_level = val;
3457
3458         return strnlen(buf, count);
3459 }
3460
3461 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3462                         show_debug_level, store_debug_level);
3463
3464
3465 #endif /* CONFIG_IWLWIFI_DEBUG */
3466
3467
3468 static ssize_t show_version(struct device *d,
3469                                 struct device_attribute *attr, char *buf)
3470 {
3471         struct iwl_priv *priv = d->driver_data;
3472         struct iwl_alive_resp *palive = &priv->card_alive;
3473         ssize_t pos = 0;
3474         u16 eeprom_ver;
3475
3476         if (palive->is_valid)
3477                 pos += sprintf(buf + pos,
3478                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3479                                 "fw type: 0x%01X 0x%01X\n",
3480                                 palive->ucode_major, palive->ucode_minor,
3481                                 palive->sw_rev[0], palive->sw_rev[1],
3482                                 palive->ver_type, palive->ver_subtype);
3483         else
3484                 pos += sprintf(buf + pos, "fw not loaded\n");
3485
3486         if (priv->eeprom) {
3487                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3488                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3489                                  eeprom_ver);
3490         } else {
3491                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3492         }
3493
3494         return pos;
3495 }
3496
3497 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3498
3499 static ssize_t show_temperature(struct device *d,
3500                                 struct device_attribute *attr, char *buf)
3501 {
3502         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3503
3504         if (!iwl_is_alive(priv))
3505                 return -EAGAIN;
3506
3507         return sprintf(buf, "%d\n", priv->temperature);
3508 }
3509
3510 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3511
3512 static ssize_t show_tx_power(struct device *d,
3513                              struct device_attribute *attr, char *buf)
3514 {
3515         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3516
3517         if (!iwl_is_ready_rf(priv))
3518                 return sprintf(buf, "off\n");
3519         else
3520                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3521 }
3522
3523 static ssize_t store_tx_power(struct device *d,
3524                               struct device_attribute *attr,
3525                               const char *buf, size_t count)
3526 {
3527         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3528         unsigned long val;
3529         int ret;
3530
3531         ret = strict_strtoul(buf, 10, &val);
3532         if (ret)
3533                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3534         else
3535                 iwl_set_tx_power(priv, val, false);
3536
3537         return count;
3538 }
3539
3540 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3541
3542 static ssize_t show_flags(struct device *d,
3543                           struct device_attribute *attr, char *buf)
3544 {
3545         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3546
3547         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3548 }
3549
3550 static ssize_t store_flags(struct device *d,
3551                            struct device_attribute *attr,
3552                            const char *buf, size_t count)
3553 {
3554         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3555         unsigned long val;
3556         u32 flags;
3557         int ret = strict_strtoul(buf, 0, &val);
3558         if (ret)
3559                 return ret;
3560         flags = (u32)val;
3561
3562         mutex_lock(&priv->mutex);
3563         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3564                 /* Cancel any currently running scans... */
3565                 if (iwl_scan_cancel_timeout(priv, 100))
3566                         IWL_WARN(priv, "Could not cancel scan.\n");
3567                 else {
3568                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3569                         priv->staging_rxon.flags = cpu_to_le32(flags);
3570                         iwl_commit_rxon(priv);
3571                 }
3572         }
3573         mutex_unlock(&priv->mutex);
3574
3575         return count;
3576 }
3577
3578 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3579
3580 static ssize_t show_filter_flags(struct device *d,
3581                                  struct device_attribute *attr, char *buf)
3582 {
3583         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3584
3585         return sprintf(buf, "0x%04X\n",
3586                 le32_to_cpu(priv->active_rxon.filter_flags));
3587 }
3588
3589 static ssize_t store_filter_flags(struct device *d,
3590                                   struct device_attribute *attr,
3591                                   const char *buf, size_t count)
3592 {
3593         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3594         unsigned long val;
3595         u32 filter_flags;
3596         int ret = strict_strtoul(buf, 0, &val);
3597         if (ret)
3598                 return ret;
3599         filter_flags = (u32)val;
3600
3601         mutex_lock(&priv->mutex);
3602         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3603                 /* Cancel any currently running scans... */
3604                 if (iwl_scan_cancel_timeout(priv, 100))
3605                         IWL_WARN(priv, "Could not cancel scan.\n");
3606                 else {
3607                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3608                                        "0x%04X\n", filter_flags);
3609                         priv->staging_rxon.filter_flags =
3610                                 cpu_to_le32(filter_flags);
3611                         iwl_commit_rxon(priv);
3612                 }
3613         }
3614         mutex_unlock(&priv->mutex);
3615
3616         return count;
3617 }
3618
3619 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3620                    store_filter_flags);
3621
3622 static ssize_t store_power_level(struct device *d,
3623                                  struct device_attribute *attr,
3624                                  const char *buf, size_t count)
3625 {
3626         struct iwl_priv *priv = dev_get_drvdata(d);
3627         int ret;
3628         unsigned long mode;
3629
3630
3631         mutex_lock(&priv->mutex);
3632
3633         if (!iwl_is_ready(priv)) {
3634                 ret = -EAGAIN;
3635                 goto out;
3636         }
3637
3638         ret = strict_strtoul(buf, 10, &mode);
3639         if (ret)
3640                 goto out;
3641
3642         ret = iwl_power_set_user_mode(priv, mode);
3643         if (ret) {
3644                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3645                 goto out;
3646         }
3647         ret = count;
3648
3649  out:
3650         mutex_unlock(&priv->mutex);
3651         return ret;
3652 }
3653
3654 static ssize_t show_power_level(struct device *d,
3655                                 struct device_attribute *attr, char *buf)
3656 {
3657         struct iwl_priv *priv = dev_get_drvdata(d);
3658         int mode = priv->power_data.user_power_setting;
3659         int system = priv->power_data.system_power_setting;
3660         int level = priv->power_data.power_mode;
3661         char *p = buf;
3662
3663         switch (system) {
3664         case IWL_POWER_SYS_AUTO:
3665                 p += sprintf(p, "SYSTEM:auto");
3666                 break;
3667         case IWL_POWER_SYS_AC:
3668                 p += sprintf(p, "SYSTEM:ac");
3669                 break;
3670         case IWL_POWER_SYS_BATTERY:
3671                 p += sprintf(p, "SYSTEM:battery");
3672                 break;
3673         }
3674
3675         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3676                         "fixed" : "auto");
3677         p += sprintf(p, "\tINDEX:%d", level);
3678         p += sprintf(p, "\n");
3679         return p - buf + 1;
3680 }
3681
3682 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3683                    store_power_level);
3684
3685
3686 static ssize_t show_statistics(struct device *d,
3687                                struct device_attribute *attr, char *buf)
3688 {
3689         struct iwl_priv *priv = dev_get_drvdata(d);
3690         u32 size = sizeof(struct iwl_notif_statistics);
3691         u32 len = 0, ofs = 0;
3692         u8 *data = (u8 *)&priv->statistics;
3693         int rc = 0;
3694
3695         if (!iwl_is_alive(priv))
3696                 return -EAGAIN;
3697
3698         mutex_lock(&priv->mutex);
3699         rc = iwl_send_statistics_request(priv, 0);
3700         mutex_unlock(&priv->mutex);
3701
3702         if (rc) {
3703                 len = sprintf(buf,
3704                               "Error sending statistics request: 0x%08X\n", rc);
3705                 return len;
3706         }
3707
3708         while (size && (PAGE_SIZE - len)) {
3709                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3710                                    PAGE_SIZE - len, 1);
3711                 len = strlen(buf);
3712                 if (PAGE_SIZE - len)
3713                         buf[len++] = '\n';
3714
3715                 ofs += 16;
3716                 size -= min(size, 16U);
3717         }
3718
3719         return len;
3720 }
3721
3722 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3723
3724
3725 /*****************************************************************************
3726  *
3727  * driver setup and teardown
3728  *
3729  *****************************************************************************/
3730
3731 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3732 {
3733         priv->workqueue = create_workqueue(DRV_NAME);
3734
3735         init_waitqueue_head(&priv->wait_command_queue);
3736
3737         INIT_WORK(&priv->up, iwl_bg_up);
3738         INIT_WORK(&priv->restart, iwl_bg_restart);
3739         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3740         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3741         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3742         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3743         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3744         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3745
3746         iwl_setup_scan_deferred_work(priv);
3747         iwl_setup_power_deferred_work(priv);
3748
3749         if (priv->cfg->ops->lib->setup_deferred_work)
3750                 priv->cfg->ops->lib->setup_deferred_work(priv);
3751
3752         init_timer(&priv->statistics_periodic);
3753         priv->statistics_periodic.data = (unsigned long)priv;
3754         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3755
3756         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3757                      iwl_irq_tasklet, (unsigned long)priv);
3758 }
3759
3760 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3761 {
3762         if (priv->cfg->ops->lib->cancel_deferred_work)
3763                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3764
3765         cancel_delayed_work_sync(&priv->init_alive_start);
3766         cancel_delayed_work(&priv->scan_check);
3767         cancel_delayed_work_sync(&priv->set_power_save);
3768         cancel_delayed_work(&priv->alive_start);
3769         cancel_work_sync(&priv->beacon_update);
3770         del_timer_sync(&priv->statistics_periodic);
3771 }
3772
3773 static struct attribute *iwl_sysfs_entries[] = {
3774         &dev_attr_flags.attr,
3775         &dev_attr_filter_flags.attr,
3776         &dev_attr_power_level.attr,
3777         &dev_attr_statistics.attr,
3778         &dev_attr_temperature.attr,
3779         &dev_attr_tx_power.attr,
3780 #ifdef CONFIG_IWLWIFI_DEBUG
3781         &dev_attr_debug_level.attr,
3782 #endif
3783         &dev_attr_version.attr,
3784
3785         NULL
3786 };
3787
3788 static struct attribute_group iwl_attribute_group = {
3789         .name = NULL,           /* put in device directory */
3790         .attrs = iwl_sysfs_entries,
3791 };
3792
3793 static struct ieee80211_ops iwl_hw_ops = {
3794         .tx = iwl_mac_tx,
3795         .start = iwl_mac_start,
3796         .stop = iwl_mac_stop,
3797         .add_interface = iwl_mac_add_interface,
3798         .remove_interface = iwl_mac_remove_interface,
3799         .config = iwl_mac_config,
3800         .config_interface = iwl_mac_config_interface,
3801         .configure_filter = iwl_configure_filter,
3802         .set_key = iwl_mac_set_key,
3803         .update_tkip_key = iwl_mac_update_tkip_key,
3804         .get_stats = iwl_mac_get_stats,
3805         .get_tx_stats = iwl_mac_get_tx_stats,
3806         .conf_tx = iwl_mac_conf_tx,
3807         .reset_tsf = iwl_mac_reset_tsf,
3808         .bss_info_changed = iwl_bss_info_changed,
3809         .ampdu_action = iwl_mac_ampdu_action,
3810         .hw_scan = iwl_mac_hw_scan
3811 };
3812
3813 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3814 {
3815         int err = 0;
3816         struct iwl_priv *priv;
3817         struct ieee80211_hw *hw;
3818         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3819         unsigned long flags;
3820         u16 pci_cmd;
3821
3822         /************************
3823          * 1. Allocating HW data
3824          ************************/
3825
3826         /* Disabling hardware scan means that mac80211 will perform scans
3827          * "the hard way", rather than using device's scan. */
3828         if (cfg->mod_params->disable_hw_scan) {
3829                 if (cfg->mod_params->debug & IWL_DL_INFO)
3830                         dev_printk(KERN_DEBUG, &(pdev->dev),
3831                                    "Disabling hw_scan\n");
3832                 iwl_hw_ops.hw_scan = NULL;
3833         }
3834
3835         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3836         if (!hw) {
3837                 err = -ENOMEM;
3838                 goto out;
3839         }
3840         priv = hw->priv;
3841         /* At this point both hw and priv are allocated. */
3842
3843         SET_IEEE80211_DEV(hw, &pdev->dev);
3844
3845         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3846         priv->cfg = cfg;
3847         priv->pci_dev = pdev;
3848
3849 #ifdef CONFIG_IWLWIFI_DEBUG
3850         priv->debug_level = priv->cfg->mod_params->debug;
3851         atomic_set(&priv->restrict_refcnt, 0);
3852 #endif
3853
3854         /**************************
3855          * 2. Initializing PCI bus
3856          **************************/
3857         if (pci_enable_device(pdev)) {
3858                 err = -ENODEV;
3859                 goto out_ieee80211_free_hw;
3860         }
3861
3862         pci_set_master(pdev);
3863
3864         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3865         if (!err)
3866                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3867         if (err) {
3868                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3869                 if (!err)
3870                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3871                 /* both attempts failed: */
3872                 if (err) {
3873                         IWL_WARN(priv, "No suitable DMA available.\n");
3874                         goto out_pci_disable_device;
3875                 }
3876         }
3877
3878         err = pci_request_regions(pdev, DRV_NAME);
3879         if (err)
3880                 goto out_pci_disable_device;
3881
3882         pci_set_drvdata(pdev, priv);
3883
3884
3885         /***********************
3886          * 3. Read REV register
3887          ***********************/
3888         priv->hw_base = pci_iomap(pdev, 0, 0);
3889         if (!priv->hw_base) {
3890                 err = -ENODEV;
3891                 goto out_pci_release_regions;
3892         }
3893
3894         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3895                 (unsigned long long) pci_resource_len(pdev, 0));
3896         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3897
3898         iwl_hw_detect(priv);
3899         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3900                 priv->cfg->name, priv->hw_rev);
3901
3902         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3903          * PCI Tx retries from interfering with C3 CPU state */
3904         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3905
3906         /* amp init */
3907         err = priv->cfg->ops->lib->apm_ops.init(priv);
3908         if (err < 0) {
3909                 IWL_DEBUG_INFO("Failed to init APMG\n");
3910                 goto out_iounmap;
3911         }
3912         /*****************
3913          * 4. Read EEPROM
3914          *****************/
3915         /* Read the EEPROM */
3916         err = iwl_eeprom_init(priv);
3917         if (err) {
3918                 IWL_ERR(priv, "Unable to init EEPROM\n");
3919                 goto out_iounmap;
3920         }
3921         err = iwl_eeprom_check_version(priv);
3922         if (err)
3923                 goto out_iounmap;
3924
3925         /* extract MAC Address */
3926         iwl_eeprom_get_mac(priv, priv->mac_addr);
3927         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3928         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3929
3930         /************************
3931          * 5. Setup HW constants
3932          ************************/
3933         if (iwl_set_hw_params(priv)) {
3934                 IWL_ERR(priv, "failed to set hw parameters\n");
3935                 goto out_free_eeprom;
3936         }
3937
3938         /*******************
3939          * 6. Setup priv
3940          *******************/
3941
3942         err = iwl_init_drv(priv);
3943         if (err)
3944                 goto out_free_eeprom;
3945         /* At this point both hw and priv are initialized. */
3946
3947         /**********************************
3948          * 7. Initialize module parameters
3949          **********************************/
3950
3951         /* Disable radio (SW RF KILL) via parameter when loading driver */
3952         if (priv->cfg->mod_params->disable) {
3953                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3954                 IWL_DEBUG_INFO("Radio disabled.\n");
3955         }
3956
3957         /********************
3958          * 8. Setup services
3959          ********************/
3960         spin_lock_irqsave(&priv->lock, flags);
3961         iwl_disable_interrupts(priv);
3962         spin_unlock_irqrestore(&priv->lock, flags);
3963
3964         pci_enable_msi(priv->pci_dev);
3965
3966         err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
3967                           DRV_NAME, priv);
3968         if (err) {
3969                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3970                 goto out_disable_msi;
3971         }
3972         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3973         if (err) {
3974                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3975                 goto out_uninit_drv;
3976         }
3977
3978         iwl_setup_deferred_work(priv);
3979         iwl_setup_rx_handlers(priv);
3980
3981         /**********************************
3982          * 9. Setup and register mac80211
3983          **********************************/
3984
3985         /* enable interrupts if needed: hw bug w/a */
3986         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3987         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3988                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3989                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3990         }
3991
3992         iwl_enable_interrupts(priv);
3993
3994         err = iwl_setup_mac(priv);
3995         if (err)
3996                 goto out_remove_sysfs;
3997
3998         err = iwl_dbgfs_register(priv, DRV_NAME);
3999         if (err)
4000                 IWL_ERR(priv, "failed to create debugfs files\n");
4001
4002         /* If platform's RF_KILL switch is NOT set to KILL */
4003         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4004                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4005         else
4006                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4007
4008         err = iwl_rfkill_init(priv);
4009         if (err)
4010                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
4011                                   "Ignoring error: %d\n", err);
4012         else
4013                 iwl_rfkill_set_hw_state(priv);
4014
4015         iwl_power_initialize(priv);
4016         return 0;
4017
4018  out_remove_sysfs:
4019         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4020  out_disable_msi:
4021         pci_disable_msi(priv->pci_dev);
4022         pci_disable_device(priv->pci_dev);
4023  out_uninit_drv:
4024         iwl_uninit_drv(priv);
4025  out_free_eeprom:
4026         iwl_eeprom_free(priv);
4027  out_iounmap:
4028         pci_iounmap(pdev, priv->hw_base);
4029  out_pci_release_regions:
4030         pci_release_regions(pdev);
4031         pci_set_drvdata(pdev, NULL);
4032  out_pci_disable_device:
4033         pci_disable_device(pdev);
4034  out_ieee80211_free_hw:
4035         ieee80211_free_hw(priv->hw);
4036  out:
4037         return err;
4038 }
4039
4040 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4041 {
4042         struct iwl_priv *priv = pci_get_drvdata(pdev);
4043         unsigned long flags;
4044
4045         if (!priv)
4046                 return;
4047
4048         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4049
4050         iwl_dbgfs_unregister(priv);
4051         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4052
4053         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4054          * to be called and iwl_down since we are removing the device
4055          * we need to set STATUS_EXIT_PENDING bit.
4056          */
4057         set_bit(STATUS_EXIT_PENDING, &priv->status);
4058         if (priv->mac80211_registered) {
4059                 ieee80211_unregister_hw(priv->hw);
4060                 priv->mac80211_registered = 0;
4061         } else {
4062                 iwl_down(priv);
4063         }
4064
4065         /* make sure we flush any pending irq or
4066          * tasklet for the driver
4067          */
4068         spin_lock_irqsave(&priv->lock, flags);
4069         iwl_disable_interrupts(priv);
4070         spin_unlock_irqrestore(&priv->lock, flags);
4071
4072         iwl_synchronize_irq(priv);
4073
4074         iwl_rfkill_unregister(priv);
4075         iwl_dealloc_ucode_pci(priv);
4076
4077         if (priv->rxq.bd)
4078                 iwl_rx_queue_free(priv, &priv->rxq);
4079         iwl_hw_txq_ctx_free(priv);
4080
4081         iwl_clear_stations_table(priv);
4082         iwl_eeprom_free(priv);
4083
4084
4085         /*netif_stop_queue(dev); */
4086         flush_workqueue(priv->workqueue);
4087
4088         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4089          * priv->workqueue... so we can't take down the workqueue
4090          * until now... */
4091         destroy_workqueue(priv->workqueue);
4092         priv->workqueue = NULL;
4093
4094         free_irq(priv->pci_dev->irq, priv);
4095         pci_disable_msi(priv->pci_dev);
4096         pci_iounmap(pdev, priv->hw_base);
4097         pci_release_regions(pdev);
4098         pci_disable_device(pdev);
4099         pci_set_drvdata(pdev, NULL);
4100
4101         iwl_uninit_drv(priv);
4102
4103         if (priv->ibss_beacon)
4104                 dev_kfree_skb(priv->ibss_beacon);
4105
4106         ieee80211_free_hw(priv->hw);
4107 }
4108
4109 #ifdef CONFIG_PM
4110
4111 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4112 {
4113         struct iwl_priv *priv = pci_get_drvdata(pdev);
4114
4115         if (priv->is_open) {
4116                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4117                 iwl_mac_stop(priv->hw);
4118                 priv->is_open = 1;
4119         }
4120
4121         pci_save_state(pdev);
4122         pci_disable_device(pdev);
4123         pci_set_power_state(pdev, PCI_D3hot);
4124
4125         return 0;
4126 }
4127
4128 static int iwl_pci_resume(struct pci_dev *pdev)
4129 {
4130         struct iwl_priv *priv = pci_get_drvdata(pdev);
4131
4132         pci_set_power_state(pdev, PCI_D0);
4133         pci_enable_device(pdev);
4134         pci_restore_state(pdev);
4135         iwl_enable_interrupts(priv);
4136
4137         if (priv->is_open)
4138                 iwl_mac_start(priv->hw);
4139
4140         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4141         return 0;
4142 }
4143
4144 #endif /* CONFIG_PM */
4145
4146 /*****************************************************************************
4147  *
4148  * driver and module entry point
4149  *
4150  *****************************************************************************/
4151
4152 /* Hardware specific file defines the PCI IDs table for that hardware module */
4153 static struct pci_device_id iwl_hw_card_ids[] = {
4154 #ifdef CONFIG_IWL4965
4155         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4156         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4157 #endif /* CONFIG_IWL4965 */
4158 #ifdef CONFIG_IWL5000
4159         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4160         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4161         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4162         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4163         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4164         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4165         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4166         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4167         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4168         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4169 /* 5350 WiFi/WiMax */
4170         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4171         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4172         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4173 /* 5150 Wifi/WiMax */
4174         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4175         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4176 /* 6000/6050 Series */
4177         {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
4178         {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
4179         {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
4180         {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
4181         {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
4182         {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
4183         {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
4184         {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
4185         {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
4186         {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
4187         {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
4188 /* 100 Series WiFi */
4189         {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl100_bgn_cfg)},
4190         {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl100_bgn_cfg)},
4191 #endif /* CONFIG_IWL5000 */
4192
4193         {0}
4194 };
4195 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4196
4197 static struct pci_driver iwl_driver = {
4198         .name = DRV_NAME,
4199         .id_table = iwl_hw_card_ids,
4200         .probe = iwl_pci_probe,
4201         .remove = __devexit_p(iwl_pci_remove),
4202 #ifdef CONFIG_PM
4203         .suspend = iwl_pci_suspend,
4204         .resume = iwl_pci_resume,
4205 #endif
4206 };
4207
4208 static int __init iwl_init(void)
4209 {
4210
4211         int ret;
4212         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4213         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4214
4215         ret = iwlagn_rate_control_register();
4216         if (ret) {
4217                 printk(KERN_ERR DRV_NAME
4218                        "Unable to register rate control algorithm: %d\n", ret);
4219                 return ret;
4220         }
4221
4222         ret = pci_register_driver(&iwl_driver);
4223         if (ret) {
4224                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4225                 goto error_register;
4226         }
4227
4228         return ret;
4229
4230 error_register:
4231         iwlagn_rate_control_unregister();
4232         return ret;
4233 }
4234
4235 static void __exit iwl_exit(void)
4236 {
4237         pci_unregister_driver(&iwl_driver);
4238         iwlagn_rate_control_unregister();
4239 }
4240
4241 module_exit(iwl_exit);
4242 module_init(iwl_init);