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_IWLWIFI_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97 /**
  98  * iwl_commit_rxon - commit staging_rxon to hardware
  99  *
 100  * The RXON command in staging_rxon is committed to the hardware and
 101  * the active_rxon structure is updated with the new data.  This
 102  * function correctly transitions out of the RXON_ASSOC_MSK state if
 103  * a HW tune is required based on the RXON structure changes.
 104  */
 105 int iwl_commit_rxon(struct iwl_priv *priv)
 106 {
 107         /* cast away the const for active_rxon in this function */
 108         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 109         int ret;
 110         bool new_assoc =
 111                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 112
 113         if (!iwl_is_alive(priv))
 114                 return -EBUSY;
 115
 116         /* always get timestamp with Rx frame */
 117         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 118         /* allow CTS-to-self if possible. this is relevant only for
 119          * 5000, but will not damage 4965 */
 120         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 121
 122         ret = iwl_check_rxon_cmd(priv);
 123         if (ret) {
 124                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 125                 return -EINVAL;
 126         }
 127
 128         /* If we don't need to send a full RXON, we can use
 129          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 130          * and other flags for the current radio configuration. */
 131         if (!iwl_full_rxon_required(priv)) {
 132                 ret = iwl_send_rxon_assoc(priv);
 133                 if (ret) {
 134                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 135                         return ret;
 136                 }
 137
 138                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 139                 return 0;
 140         }
 141
 142         /* station table will be cleared */
 143         priv->assoc_station_added = 0;
 144
 145         /* If we are currently associated and the new config requires
 146          * an RXON_ASSOC and the new config wants the associated mask enabled,
 147          * we must clear the associated from the active configuration
 148          * before we apply the new config */
 149         if (iwl_is_associated(priv) && new_assoc) {
 150                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 151                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 152
 153                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 154                                       sizeof(struct iwl_rxon_cmd),
 155                                       &priv->active_rxon);
 156
 157                 /* If the mask clearing failed then we set
 158                  * active_rxon back to what it was previously */
 159                 if (ret) {
 160                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 161                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 162                         return ret;
 163                 }
 164         }
 165
 166         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 167                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 168                        "* channel = %d\n"
 169                        "* bssid = %pM\n",
 170                        (new_assoc ? "" : "out"),
 171                        le16_to_cpu(priv->staging_rxon.channel),
 172                        priv->staging_rxon.bssid_addr);
 173
 174         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 175
 176         /* Apply the new configuration
 177          * RXON unassoc clears the station table in uCode, send it before
 178          * we add the bcast station. If assoc bit is set, we will send RXON
 179          * after having added the bcast and bssid station.
 180          */
 181         if (!new_assoc) {
 182                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 183                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 184                 if (ret) {
 185                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 186                         return ret;
 187                 }
 188                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 189         }
 190
 191         priv->cfg->ops->smgmt->clear_station_table(priv);
 192
 193         if (!priv->error_recovering)
 194                 priv->start_calib = 0;
 195
 196         /* Add the broadcast address so we can send broadcast frames */
 197         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 198                                                 IWL_INVALID_STATION) {
 199                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 200                 return -EIO;
 201         }
 202
 203         /* If we have set the ASSOC_MSK and we are in BSS mode then
 204          * add the IWL_AP_ID to the station rate table */
 205         if (new_assoc) {
 206                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 207                         ret = iwl_rxon_add_station(priv,
 208                                            priv->active_rxon.bssid_addr, 1);
 209                         if (ret == IWL_INVALID_STATION) {
 210                                 IWL_ERR(priv,
 211                                         "Error adding AP address for TX.\n");
 212                                 return -EIO;
 213                         }
 214                         priv->assoc_station_added = 1;
 215                         if (priv->default_wep_key &&
 216                             iwl_send_static_wepkey_cmd(priv, 0))
 217                                 IWL_ERR(priv,
 218                                         "Could not send WEP static key.\n");
 219                 }
 220
 221                 /* Apply the new configuration
 222                  * RXON assoc doesn't clear the station table in uCode,
 223                  */
 224                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 225                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 226                 if (ret) {
 227                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 228                         return ret;
 229                 }
 230                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 231         }
 232
 233         iwl_init_sensitivity(priv);
 234
 235         /* If we issue a new RXON command which required a tune then we must
 236          * send a new TXPOWER command or we won't be able to Tx any frames */
 237         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 238         if (ret) {
 239                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 240                 return ret;
 241         }
 242
 243         return 0;
 244 }
 245
 246 void iwl_update_chain_flags(struct iwl_priv *priv)
 247 {
 248
 249         if (priv->cfg->ops->hcmd->set_rxon_chain)
 250                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 251         iwlcore_commit_rxon(priv);
 252 }
 253
 254 static void iwl_clear_free_frames(struct iwl_priv *priv)
 255 {
 256         struct list_head *element;
 257
 258         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 259                        priv->frames_count);
 260
 261         while (!list_empty(&priv->free_frames)) {
 262                 element = priv->free_frames.next;
 263                 list_del(element);
 264                 kfree(list_entry(element, struct iwl_frame, list));
 265                 priv->frames_count--;
 266         }
 267
 268         if (priv->frames_count) {
 269                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 270                             priv->frames_count);
 271                 priv->frames_count = 0;
 272         }
 273 }
 274
 275 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 276 {
 277         struct iwl_frame *frame;
 278         struct list_head *element;
 279         if (list_empty(&priv->free_frames)) {
 280                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 281                 if (!frame) {
 282                         IWL_ERR(priv, "Could not allocate frame!\n");
 283                         return NULL;
 284                 }
 285
 286                 priv->frames_count++;
 287                 return frame;
 288         }
 289
 290         element = priv->free_frames.next;
 291         list_del(element);
 292         return list_entry(element, struct iwl_frame, list);
 293 }
 294
 295 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 296 {
 297         memset(frame, 0, sizeof(*frame));
 298         list_add(&frame->list, &priv->free_frames);
 299 }
 300
 301 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 302                                           struct ieee80211_hdr *hdr,
 303                                           int left)
 304 {
 305         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 306             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 307              (priv->iw_mode != NL80211_IFTYPE_AP)))
 308                 return 0;
 309
 310         if (priv->ibss_beacon->len > left)
 311                 return 0;
 312
 313         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 314
 315         return priv->ibss_beacon->len;
 316 }
 317
 318 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 319                                        struct iwl_frame *frame, u8 rate)
 320 {
 321         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 322         unsigned int frame_size;
 323
 324         tx_beacon_cmd = &frame->u.beacon;
 325         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 326
 327         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 328         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 329
 330         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 331                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 332
 333         BUG_ON(frame_size > MAX_MPDU_SIZE);
 334         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 335
 336         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 337                 tx_beacon_cmd->tx.rate_n_flags =
 338                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 339         else
 340                 tx_beacon_cmd->tx.rate_n_flags =
 341                         iwl_hw_set_rate_n_flags(rate, 0);
 342
 343         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 344                                      TX_CMD_FLG_TSF_MSK |
 345                                      TX_CMD_FLG_STA_RATE_MSK;
 346
 347         return sizeof(*tx_beacon_cmd) + frame_size;
 348 }
 349 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 350 {
 351         struct iwl_frame *frame;
 352         unsigned int frame_size;
 353         int rc;
 354         u8 rate;
 355
 356         frame = iwl_get_free_frame(priv);
 357
 358         if (!frame) {
 359                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 360                           "command.\n");
 361                 return -ENOMEM;
 362         }
 363
 364         rate = iwl_rate_get_lowest_plcp(priv);
 365
 366         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 367
 368         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 369                               &frame->u.cmd[0]);
 370
 371         iwl_free_frame(priv, frame);
 372
 373         return rc;
 374 }
 375
 376 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 377 {
 378         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 379
 380         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 381         if (sizeof(dma_addr_t) > sizeof(u32))
 382                 addr |=
 383                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 384
 385         return addr;
 386 }
 387
 388 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 389 {
 390         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 391
 392         return le16_to_cpu(tb->hi_n_len) >> 4;
 393 }
 394
 395 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 396                                   dma_addr_t addr, u16 len)
 397 {
 398         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 399         u16 hi_n_len = len << 4;
 400
 401         put_unaligned_le32(addr, &tb->lo);
 402         if (sizeof(dma_addr_t) > sizeof(u32))
 403                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 404
 405         tb->hi_n_len = cpu_to_le16(hi_n_len);
 406
 407         tfd->num_tbs = idx + 1;
 408 }
 409
 410 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 411 {
 412         return tfd->num_tbs & 0x1f;
 413 }
 414
 415 /**
 416  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 417  * @priv - driver private data
 418  * @txq - tx queue
 419  *
 420  * Does NOT advance any TFD circular buffer read/write indexes
 421  * Does NOT free the TFD itself (which is within circular buffer)
 422  */
 423 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 424 {
 425         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 426         struct iwl_tfd *tfd;
 427         struct pci_dev *dev = priv->pci_dev;
 428         int index = txq->q.read_ptr;
 429         int i;
 430         int num_tbs;
 431
 432         tfd = &tfd_tmp[index];
 433
 434         /* Sanity check on number of chunks */
 435         num_tbs = iwl_tfd_get_num_tbs(tfd);
 436
 437         if (num_tbs >= IWL_NUM_OF_TBS) {
 438                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 439                 /* @todo issue fatal error, it is quite serious situation */
 440                 return;
 441         }
 442
 443         /* Unmap tx_cmd */
 444         if (num_tbs)
 445                 pci_unmap_single(dev,
 446                                 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
 447                                 pci_unmap_len(&txq->cmd[index]->meta, len),
 448                                 PCI_DMA_BIDIRECTIONAL);
 449
 450         /* Unmap chunks, if any. */
 451         for (i = 1; i < num_tbs; i++) {
 452                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 453                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 454
 455                 if (txq->txb) {
 456                         dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
 457                         txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
 458                 }
 459         }
 460 }
 461
 462 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 463                                  struct iwl_tx_queue *txq,
 464                                  dma_addr_t addr, u16 len,
 465                                  u8 reset, u8 pad)
 466 {
 467         struct iwl_queue *q;
 468         struct iwl_tfd *tfd, *tfd_tmp;
 469         u32 num_tbs;
 470
 471         q = &txq->q;
 472         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 473         tfd = &tfd_tmp[q->write_ptr];
 474
 475         if (reset)
 476                 memset(tfd, 0, sizeof(*tfd));
 477
 478         num_tbs = iwl_tfd_get_num_tbs(tfd);
 479
 480         /* Each TFD can point to a maximum 20 Tx buffers */
 481         if (num_tbs >= IWL_NUM_OF_TBS) {
 482                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 483                           IWL_NUM_OF_TBS);
 484                 return -EINVAL;
 485         }
 486
 487         BUG_ON(addr & ~DMA_BIT_MASK(36));
 488         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 489                 IWL_ERR(priv, "Unaligned address = %llx\n",
 490                           (unsigned long long)addr);
 491
 492         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 493
 494         return 0;
 495 }
 496
 497 /*
 498  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 499  * given Tx queue, and enable the DMA channel used for that queue.
 500  *
 501  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 502  * channels supported in hardware.
 503  */
 504 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 505                          struct iwl_tx_queue *txq)
 506 {
 507         int ret;
 508         unsigned long flags;
 509         int txq_id = txq->q.id;
 510
 511         spin_lock_irqsave(&priv->lock, flags);
 512         ret = iwl_grab_nic_access(priv);
 513         if (ret) {
 514                 spin_unlock_irqrestore(&priv->lock, flags);
 515                 return ret;
 516         }
 517
 518         /* Circular buffer (TFD queue in DRAM) physical base address */
 519         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 520                              txq->q.dma_addr >> 8);
 521
 522         iwl_release_nic_access(priv);
 523         spin_unlock_irqrestore(&priv->lock, flags);
 524
 525         return 0;
 526 }
 527
 528
 529 /******************************************************************************
 530  *
 531  * Misc. internal state and helper functions
 532  *
 533  ******************************************************************************/
 534
 535 #define MAX_UCODE_BEACON_INTERVAL       4096
 536
 537 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 538 {
 539         u16 new_val = 0;
 540         u16 beacon_factor = 0;
 541
 542         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 543                                         / MAX_UCODE_BEACON_INTERVAL;
 544         new_val = beacon_val / beacon_factor;
 545
 546         if (!new_val)
 547                 new_val = MAX_UCODE_BEACON_INTERVAL;
 548
 549         return new_val;
 550 }
 551
 552 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 553 {
 554         u64 tsf;
 555         s32 interval_tm, rem;
 556         unsigned long flags;
 557         struct ieee80211_conf *conf = NULL;
 558         u16 beacon_int = 0;
 559
 560         conf = ieee80211_get_hw_conf(priv->hw);
 561
 562         spin_lock_irqsave(&priv->lock, flags);
 563         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 564         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 565
 566         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 567                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 568                 priv->rxon_timing.atim_window = 0;
 569         } else {
 570                 beacon_int = iwl_adjust_beacon_interval(
 571                         priv->vif->bss_conf.beacon_int);
 572
 573                 /* TODO: we need to get atim_window from upper stack
 574                  * for now we set to 0 */
 575                 priv->rxon_timing.atim_window = 0;
 576         }
 577
 578         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 579
 580         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 581         interval_tm = beacon_int * 1024;
 582         rem = do_div(tsf, interval_tm);
 583         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 584
 585         spin_unlock_irqrestore(&priv->lock, flags);
 586         IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n",
 587                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 588                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 589                         le16_to_cpu(priv->rxon_timing.atim_window));
 590 }
 591
 592 /******************************************************************************
 593  *
 594  * Generic RX handler implementations
 595  *
 596  ******************************************************************************/
 597 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 598                                 struct iwl_rx_mem_buffer *rxb)
 599 {
 600         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 601         struct iwl_alive_resp *palive;
 602         struct delayed_work *pwork;
 603
 604         palive = &pkt->u.alive_frame;
 605
 606         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 607                        "0x%01X 0x%01X\n",
 608                        palive->is_valid, palive->ver_type,
 609                        palive->ver_subtype);
 610
 611         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 612                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 613                 memcpy(&priv->card_alive_init,
 614                        &pkt->u.alive_frame,
 615                        sizeof(struct iwl_init_alive_resp));
 616                 pwork = &priv->init_alive_start;
 617         } else {
 618                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 619                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 620                        sizeof(struct iwl_alive_resp));
 621                 pwork = &priv->alive_start;
 622         }
 623
 624         /* We delay the ALIVE response by 5ms to
 625          * give the HW RF Kill time to activate... */
 626         if (palive->is_valid == UCODE_VALID_OK)
 627                 queue_delayed_work(priv->workqueue, pwork,
 628                                    msecs_to_jiffies(5));
 629         else
 630                 IWL_WARN(priv, "uCode did not respond OK.\n");
 631 }
 632
 633 static void iwl_bg_beacon_update(struct work_struct *work)
 634 {
 635         struct iwl_priv *priv =
 636                 container_of(work, struct iwl_priv, beacon_update);
 637         struct sk_buff *beacon;
 638
 639         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 640         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 641
 642         if (!beacon) {
 643                 IWL_ERR(priv, "update beacon failed\n");
 644                 return;
 645         }
 646
 647         mutex_lock(&priv->mutex);
 648         /* new beacon skb is allocated every time; dispose previous.*/
 649         if (priv->ibss_beacon)
 650                 dev_kfree_skb(priv->ibss_beacon);
 651
 652         priv->ibss_beacon = beacon;
 653         mutex_unlock(&priv->mutex);
 654
 655         iwl_send_beacon_cmd(priv);
 656 }
 657
 658 /**
 659  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 660  *
 661  * This callback is provided in order to send a statistics request.
 662  *
 663  * This timer function is continually reset to execute within
 664  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 665  * was received.  We need to ensure we receive the statistics in order
 666  * to update the temperature used for calibrating the TXPOWER.
 667  */
 668 static void iwl_bg_statistics_periodic(unsigned long data)
 669 {
 670         struct iwl_priv *priv = (struct iwl_priv *)data;
 671
 672         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 673                 return;
 674
 675         /* dont send host command if rf-kill is on */
 676         if (!iwl_is_ready_rf(priv))
 677                 return;
 678
 679         iwl_send_statistics_request(priv, CMD_ASYNC);
 680 }
 681
 682 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 683                                 struct iwl_rx_mem_buffer *rxb)
 684 {
 685 #ifdef CONFIG_IWLWIFI_DEBUG
 686         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 687         struct iwl4965_beacon_notif *beacon =
 688                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 689         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 690
 691         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 692                 "tsf %d %d rate %d\n",
 693                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 694                 beacon->beacon_notify_hdr.failure_frame,
 695                 le32_to_cpu(beacon->ibss_mgr_status),
 696                 le32_to_cpu(beacon->high_tsf),
 697                 le32_to_cpu(beacon->low_tsf), rate);
 698 #endif
 699
 700         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 701             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 702                 queue_work(priv->workqueue, &priv->beacon_update);
 703 }
 704
 705 /* Handle notification from uCode that card's power state is changing
 706  * due to software, hardware, or critical temperature RFKILL */
 707 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 708                                     struct iwl_rx_mem_buffer *rxb)
 709 {
 710         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 711         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 712         unsigned long status = priv->status;
 713
 714         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
 715                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 716                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 717
 718         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 719                      RF_CARD_DISABLED)) {
 720
 721                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 722                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 723
 724                 if (!iwl_grab_nic_access(priv)) {
 725                         iwl_write_direct32(
 726                                 priv, HBUS_TARG_MBX_C,
 727                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 728
 729                         iwl_release_nic_access(priv);
 730                 }
 731
 732                 if (!(flags & RXON_CARD_DISABLED)) {
 733                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 734                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 735                         if (!iwl_grab_nic_access(priv)) {
 736                                 iwl_write_direct32(
 737                                         priv, HBUS_TARG_MBX_C,
 738                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 739
 740                                 iwl_release_nic_access(priv);
 741                         }
 742                 }
 743
 744                 if (flags & RF_CARD_DISABLED) {
 745                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 746                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 747                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
 748                         if (!iwl_grab_nic_access(priv))
 749                                 iwl_release_nic_access(priv);
 750                 }
 751         }
 752
 753         if (flags & HW_CARD_DISABLED)
 754                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 755         else
 756                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 757
 758
 759         if (flags & SW_CARD_DISABLED)
 760                 set_bit(STATUS_RF_KILL_SW, &priv->status);
 761         else
 762                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
 763
 764         if (!(flags & RXON_CARD_DISABLED))
 765                 iwl_scan_cancel(priv);
 766
 767         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 768              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
 769             (test_bit(STATUS_RF_KILL_SW, &status) !=
 770              test_bit(STATUS_RF_KILL_SW, &priv->status)))
 771                 queue_work(priv->workqueue, &priv->rf_kill);
 772         else
 773                 wake_up_interruptible(&priv->wait_command_queue);
 774 }
 775
 776 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 777 {
 778         int ret;
 779         unsigned long flags;
 780
 781         spin_lock_irqsave(&priv->lock, flags);
 782         ret = iwl_grab_nic_access(priv);
 783         if (ret)
 784                 goto err;
 785
 786         if (src == IWL_PWR_SRC_VAUX) {
 787                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
 788                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 789                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 790                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 791         } else {
 792                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 793                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 794                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 795         }
 796
 797         iwl_release_nic_access(priv);
 798 err:
 799         spin_unlock_irqrestore(&priv->lock, flags);
 800         return ret;
 801 }
 802
 803 /**
 804  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 805  *
 806  * Setup the RX handlers for each of the reply types sent from the uCode
 807  * to the host.
 808  *
 809  * This function chains into the hardware specific files for them to setup
 810  * any hardware specific handlers as well.
 811  */
 812 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 813 {
 814         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 815         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 816         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 817         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 818         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 819             iwl_rx_pm_debug_statistics_notif;
 820         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 821
 822         /*
 823          * The same handler is used for both the REPLY to a discrete
 824          * statistics request from the host as well as for the periodic
 825          * statistics notifications (after received beacons) from the uCode.
 826          */
 827         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
 828         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 829
 830         iwl_setup_spectrum_handlers(priv);
 831         iwl_setup_rx_scan_handlers(priv);
 832
 833         /* status change handler */
 834         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 835
 836         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 837             iwl_rx_missed_beacon_notif;
 838         /* Rx handlers */
 839         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
 840         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
 841         /* block ack */
 842         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
 843         /* Set up hardware specific Rx handlers */
 844         priv->cfg->ops->lib->rx_handler_setup(priv);
 845 }
 846
 847 /**
 848  * iwl_rx_handle - Main entry function for receiving responses from uCode
 849  *
 850  * Uses the priv->rx_handlers callback function array to invoke
 851  * the appropriate handlers, including command responses,
 852  * frame-received notifications, and other notifications.
 853  */
 854 void iwl_rx_handle(struct iwl_priv *priv)
 855 {
 856         struct iwl_rx_mem_buffer *rxb;
 857         struct iwl_rx_packet *pkt;
 858         struct iwl_rx_queue *rxq = &priv->rxq;
 859         u32 r, i;
 860         int reclaim;
 861         unsigned long flags;
 862         u8 fill_rx = 0;
 863         u32 count = 8;
 864
 865         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 866          * buffer that the driver may process (last buffer filled by ucode). */
 867         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 868         i = rxq->read;
 869
 870         /* Rx interrupt, but nothing sent from uCode */
 871         if (i == r)
 872                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
 873
 874         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
 875                 fill_rx = 1;
 876
 877         while (i != r) {
 878                 rxb = rxq->queue[i];
 879
 880                 /* If an RXB doesn't have a Rx queue slot associated with it,
 881                  * then a bug has been introduced in the queue refilling
 882                  * routines -- catch it here */
 883                 BUG_ON(rxb == NULL);
 884
 885                 rxq->queue[i] = NULL;
 886
 887                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
 888                                  priv->hw_params.rx_buf_size + 256,
 889                                  PCI_DMA_FROMDEVICE);
 890                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
 891
 892                 /* Reclaim a command buffer only if this packet is a response
 893                  *   to a (driver-originated) command.
 894                  * If the packet (e.g. Rx frame) originated from uCode,
 895                  *   there is no command buffer to reclaim.
 896                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 897                  *   but apparently a few don't get set; catch them here. */
 898                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
 899                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
 900                         (pkt->hdr.cmd != REPLY_RX) &&
 901                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
 902                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
 903                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
 904                         (pkt->hdr.cmd != REPLY_TX);
 905
 906                 /* Based on type of command response or notification,
 907                  *   handle those that need handling via function in
 908                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
 909                 if (priv->rx_handlers[pkt->hdr.cmd]) {
 910                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
 911                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
 912                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
 913                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
 914                 } else {
 915                         /* No handling needed */
 916                         IWL_DEBUG_RX(priv,
 917                                 "r %d i %d No handler needed for %s, 0x%02x\n",
 918                                 r, i, get_cmd_string(pkt->hdr.cmd),
 919                                 pkt->hdr.cmd);
 920                 }
 921
 922                 if (reclaim) {
 923                         /* Invoke any callbacks, transfer the skb to caller, and
 924                          * fire off the (possibly) blocking iwl_send_cmd()
 925                          * as we reclaim the driver command queue */
 926                         if (rxb && rxb->skb)
 927                                 iwl_tx_cmd_complete(priv, rxb);
 928                         else
 929                                 IWL_WARN(priv, "Claim null rxb?\n");
 930                 }
 931
 932                 /* For now we just don't re-use anything.  We can tweak this
 933                  * later to try and re-use notification packets and SKBs that
 934                  * fail to Rx correctly */
 935                 if (rxb->skb != NULL) {
 936                         priv->alloc_rxb_skb--;
 937                         dev_kfree_skb_any(rxb->skb);
 938                         rxb->skb = NULL;
 939                 }
 940
 941                 spin_lock_irqsave(&rxq->lock, flags);
 942                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
 943                 spin_unlock_irqrestore(&rxq->lock, flags);
 944                 i = (i + 1) & RX_QUEUE_MASK;
 945                 /* If there are a lot of unused frames,
 946                  * restock the Rx queue so ucode wont assert. */
 947                 if (fill_rx) {
 948                         count++;
 949                         if (count >= 8) {
 950                                 priv->rxq.read = i;
 951                                 iwl_rx_queue_restock(priv);
 952                                 count = 0;
 953                         }
 954                 }
 955         }
 956
 957         /* Backtrack one entry */
 958         priv->rxq.read = i;
 959         iwl_rx_queue_restock(priv);
 960 }
 961
 962 /* call this function to flush any scheduled tasklet */
 963 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
 964 {
 965         /* wait to make sure we flush pending tasklet*/
 966         synchronize_irq(priv->pci_dev->irq);
 967         tasklet_kill(&priv->irq_tasklet);
 968 }
 969
 970 static void iwl_error_recovery(struct iwl_priv *priv)
 971 {
 972         unsigned long flags;
 973
 974         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
 975                sizeof(priv->staging_rxon));
 976         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 977         iwlcore_commit_rxon(priv);
 978
 979         iwl_rxon_add_station(priv, priv->bssid, 1);
 980
 981         spin_lock_irqsave(&priv->lock, flags);
 982         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
 983         priv->error_recovering = 0;
 984         spin_unlock_irqrestore(&priv->lock, flags);
 985 }
 986
 987 static void iwl_irq_tasklet(struct iwl_priv *priv)
 988 {
 989         u32 inta, handled = 0;
 990         u32 inta_fh;
 991         unsigned long flags;
 992 #ifdef CONFIG_IWLWIFI_DEBUG
 993         u32 inta_mask;
 994 #endif
 995
 996         spin_lock_irqsave(&priv->lock, flags);
 997
 998         /* Ack/clear/reset pending uCode interrupts.
 999          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1000          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1001         inta = iwl_read32(priv, CSR_INT);
1002         iwl_write32(priv, CSR_INT, inta);
1003
1004         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1005          * Any new interrupts that happen after this, either while we're
1006          * in this tasklet, or later, will show up in next ISR/tasklet. */
1007         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1008         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1009
1010 #ifdef CONFIG_IWLWIFI_DEBUG
1011         if (priv->debug_level & IWL_DL_ISR) {
1012                 /* just for debug */
1013                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1014                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1015                               inta, inta_mask, inta_fh);
1016         }
1017 #endif
1018
1019         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1020          * atomic, make sure that inta covers all the interrupts that
1021          * we've discovered, even if FH interrupt came in just after
1022          * reading CSR_INT. */
1023         if (inta_fh & CSR49_FH_INT_RX_MASK)
1024                 inta |= CSR_INT_BIT_FH_RX;
1025         if (inta_fh & CSR49_FH_INT_TX_MASK)
1026                 inta |= CSR_INT_BIT_FH_TX;
1027
1028         /* Now service all interrupt bits discovered above. */
1029         if (inta & CSR_INT_BIT_HW_ERR) {
1030                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
1031
1032                 /* Tell the device to stop sending interrupts */
1033                 iwl_disable_interrupts(priv);
1034
1035                 priv->isr_stats.hw++;
1036                 iwl_irq_handle_error(priv);
1037
1038                 handled |= CSR_INT_BIT_HW_ERR;
1039
1040                 spin_unlock_irqrestore(&priv->lock, flags);
1041
1042                 return;
1043         }
1044
1045 #ifdef CONFIG_IWLWIFI_DEBUG
1046         if (priv->debug_level & (IWL_DL_ISR)) {
1047                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1048                 if (inta & CSR_INT_BIT_SCD) {
1049                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1050                                       "the frame/frames.\n");
1051                         priv->isr_stats.sch++;
1052                 }
1053
1054                 /* Alive notification via Rx interrupt will do the real work */
1055                 if (inta & CSR_INT_BIT_ALIVE) {
1056                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1057                         priv->isr_stats.alive++;
1058                 }
1059         }
1060 #endif
1061         /* Safely ignore these bits for debug checks below */
1062         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1063
1064         /* HW RF KILL switch toggled */
1065         if (inta & CSR_INT_BIT_RF_KILL) {
1066                 int hw_rf_kill = 0;
1067                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1068                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1069                         hw_rf_kill = 1;
1070
1071                 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1072                                 hw_rf_kill ? "disable radio" : "enable radio");
1073
1074                 priv->isr_stats.rfkill++;
1075
1076                 /* driver only loads ucode once setting the interface up.
1077                  * the driver allows loading the ucode even if the radio
1078                  * is killed. Hence update the killswitch state here. The
1079                  * rfkill handler will care about restarting if needed.
1080                  */
1081                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1082                         if (hw_rf_kill)
1083                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1084                         else
1085                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1086                         queue_work(priv->workqueue, &priv->rf_kill);
1087                 }
1088
1089                 handled |= CSR_INT_BIT_RF_KILL;
1090         }
1091
1092         /* Chip got too hot and stopped itself */
1093         if (inta & CSR_INT_BIT_CT_KILL) {
1094                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1095                 priv->isr_stats.ctkill++;
1096                 handled |= CSR_INT_BIT_CT_KILL;
1097         }
1098
1099         /* Error detected by uCode */
1100         if (inta & CSR_INT_BIT_SW_ERR) {
1101                 IWL_ERR(priv, "Microcode SW error detected. "
1102                         " Restarting 0x%X.\n", inta);
1103                 priv->isr_stats.sw++;
1104                 priv->isr_stats.sw_err = inta;
1105                 iwl_irq_handle_error(priv);
1106                 handled |= CSR_INT_BIT_SW_ERR;
1107         }
1108
1109         /* uCode wakes up after power-down sleep */
1110         if (inta & CSR_INT_BIT_WAKEUP) {
1111                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1112                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1113                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1114                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1115                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1116                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1117                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1118                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1119
1120                 priv->isr_stats.wakeup++;
1121
1122                 handled |= CSR_INT_BIT_WAKEUP;
1123         }
1124
1125         /* All uCode command responses, including Tx command responses,
1126          * Rx "responses" (frame-received notification), and other
1127          * notifications from uCode come through here*/
1128         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1129                 iwl_rx_handle(priv);
1130                 priv->isr_stats.rx++;
1131                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1132         }
1133
1134         if (inta & CSR_INT_BIT_FH_TX) {
1135                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1136                 priv->isr_stats.tx++;
1137                 handled |= CSR_INT_BIT_FH_TX;
1138                 /* FH finished to write, send event */
1139                 priv->ucode_write_complete = 1;
1140                 wake_up_interruptible(&priv->wait_command_queue);
1141         }
1142
1143         if (inta & ~handled) {
1144                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1145                 priv->isr_stats.unhandled++;
1146         }
1147
1148         if (inta & ~CSR_INI_SET_MASK) {
1149                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1150                          inta & ~CSR_INI_SET_MASK);
1151                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1152         }
1153
1154         /* Re-enable all interrupts */
1155         /* only Re-enable if diabled by irq */
1156         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1157                 iwl_enable_interrupts(priv);
1158
1159 #ifdef CONFIG_IWLWIFI_DEBUG
1160         if (priv->debug_level & (IWL_DL_ISR)) {
1161                 inta = iwl_read32(priv, CSR_INT);
1162                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1163                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1164                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1165                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1166         }
1167 #endif
1168         spin_unlock_irqrestore(&priv->lock, flags);
1169 }
1170
1171
1172 /******************************************************************************
1173  *
1174  * uCode download functions
1175  *
1176  ******************************************************************************/
1177
1178 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1179 {
1180         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1181         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1182         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1183         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1184         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1185         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1186 }
1187
1188 static void iwl_nic_start(struct iwl_priv *priv)
1189 {
1190         /* Remove all resets to allow NIC to operate */
1191         iwl_write32(priv, CSR_RESET, 0);
1192 }
1193
1194
1195 /**
1196  * iwl_read_ucode - Read uCode images from disk file.
1197  *
1198  * Copy into buffers for card to fetch via bus-mastering
1199  */
1200 static int iwl_read_ucode(struct iwl_priv *priv)
1201 {
1202         struct iwl_ucode *ucode;
1203         int ret = -EINVAL, index;
1204         const struct firmware *ucode_raw;
1205         const char *name_pre = priv->cfg->fw_name_pre;
1206         const unsigned int api_max = priv->cfg->ucode_api_max;
1207         const unsigned int api_min = priv->cfg->ucode_api_min;
1208         char buf[25];
1209         u8 *src;
1210         size_t len;
1211         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1212
1213         /* Ask kernel firmware_class module to get the boot firmware off disk.
1214          * request_firmware() is synchronous, file is in memory on return. */
1215         for (index = api_max; index >= api_min; index--) {
1216                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1217                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1218                 if (ret < 0) {
1219                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
1220                                   buf, ret);
1221                         if (ret == -ENOENT)
1222                                 continue;
1223                         else
1224                                 goto error;
1225                 } else {
1226                         if (index < api_max)
1227                                 IWL_ERR(priv, "Loaded firmware %s, "
1228                                         "which is deprecated. "
1229                                         "Please use API v%u instead.\n",
1230                                           buf, api_max);
1231
1232                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1233                                        buf, ucode_raw->size);
1234                         break;
1235                 }
1236         }
1237
1238         if (ret < 0)
1239                 goto error;
1240
1241         /* Make sure that we got at least our header! */
1242         if (ucode_raw->size < sizeof(*ucode)) {
1243                 IWL_ERR(priv, "File size way too small!\n");
1244                 ret = -EINVAL;
1245                 goto err_release;
1246         }
1247
1248         /* Data from ucode file:  header followed by uCode images */
1249         ucode = (void *)ucode_raw->data;
1250
1251         priv->ucode_ver = le32_to_cpu(ucode->ver);
1252         api_ver = IWL_UCODE_API(priv->ucode_ver);
1253         inst_size = le32_to_cpu(ucode->inst_size);
1254         data_size = le32_to_cpu(ucode->data_size);
1255         init_size = le32_to_cpu(ucode->init_size);
1256         init_data_size = le32_to_cpu(ucode->init_data_size);
1257         boot_size = le32_to_cpu(ucode->boot_size);
1258
1259         /* api_ver should match the api version forming part of the
1260          * firmware filename ... but we don't check for that and only rely
1261          * on the API version read from firmware header from here on forward */
1262
1263         if (api_ver < api_min || api_ver > api_max) {
1264                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1265                           "Driver supports v%u, firmware is v%u.\n",
1266                           api_max, api_ver);
1267                 priv->ucode_ver = 0;
1268                 ret = -EINVAL;
1269                 goto err_release;
1270         }
1271         if (api_ver != api_max)
1272                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1273                           "got v%u. New firmware can be obtained "
1274                           "from http://www.intellinuxwireless.org.\n",
1275                           api_max, api_ver);
1276
1277         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1278                IWL_UCODE_MAJOR(priv->ucode_ver),
1279                IWL_UCODE_MINOR(priv->ucode_ver),
1280                IWL_UCODE_API(priv->ucode_ver),
1281                IWL_UCODE_SERIAL(priv->ucode_ver));
1282
1283         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1284                        priv->ucode_ver);
1285         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1286                        inst_size);
1287         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1288                        data_size);
1289         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1290                        init_size);
1291         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1292                        init_data_size);
1293         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1294                        boot_size);
1295
1296         /* Verify size of file vs. image size info in file's header */
1297         if (ucode_raw->size < sizeof(*ucode) +
1298                 inst_size + data_size + init_size +
1299                 init_data_size + boot_size) {
1300
1301                 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1302                                (int)ucode_raw->size);
1303                 ret = -EINVAL;
1304                 goto err_release;
1305         }
1306
1307         /* Verify that uCode images will fit in card's SRAM */
1308         if (inst_size > priv->hw_params.max_inst_size) {
1309                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1310                                inst_size);
1311                 ret = -EINVAL;
1312                 goto err_release;
1313         }
1314
1315         if (data_size > priv->hw_params.max_data_size) {
1316                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1317                                 data_size);
1318                 ret = -EINVAL;
1319                 goto err_release;
1320         }
1321         if (init_size > priv->hw_params.max_inst_size) {
1322                 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1323                         init_size);
1324                 ret = -EINVAL;
1325                 goto err_release;
1326         }
1327         if (init_data_size > priv->hw_params.max_data_size) {
1328                 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1329                       init_data_size);
1330                 ret = -EINVAL;
1331                 goto err_release;
1332         }
1333         if (boot_size > priv->hw_params.max_bsm_size) {
1334                 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1335                         boot_size);
1336                 ret = -EINVAL;
1337                 goto err_release;
1338         }
1339
1340         /* Allocate ucode buffers for card's bus-master loading ... */
1341
1342         /* Runtime instructions and 2 copies of data:
1343          * 1) unmodified from disk
1344          * 2) backup cache for save/restore during power-downs */
1345         priv->ucode_code.len = inst_size;
1346         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1347
1348         priv->ucode_data.len = data_size;
1349         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1350
1351         priv->ucode_data_backup.len = data_size;
1352         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1353
1354         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1355             !priv->ucode_data_backup.v_addr)
1356                 goto err_pci_alloc;
1357
1358         /* Initialization instructions and data */
1359         if (init_size && init_data_size) {
1360                 priv->ucode_init.len = init_size;
1361                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1362
1363                 priv->ucode_init_data.len = init_data_size;
1364                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1365
1366                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1367                         goto err_pci_alloc;
1368         }
1369
1370         /* Bootstrap (instructions only, no data) */
1371         if (boot_size) {
1372                 priv->ucode_boot.len = boot_size;
1373                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1374
1375                 if (!priv->ucode_boot.v_addr)
1376                         goto err_pci_alloc;
1377         }
1378
1379         /* Copy images into buffers for card's bus-master reads ... */
1380
1381         /* Runtime instructions (first block of data in file) */
1382         src = &ucode->data[0];
1383         len = priv->ucode_code.len;
1384         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1385         memcpy(priv->ucode_code.v_addr, src, len);
1386         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1387                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1388
1389         /* Runtime data (2nd block)
1390          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1391         src = &ucode->data[inst_size];
1392         len = priv->ucode_data.len;
1393         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1394         memcpy(priv->ucode_data.v_addr, src, len);
1395         memcpy(priv->ucode_data_backup.v_addr, src, len);
1396
1397         /* Initialization instructions (3rd block) */
1398         if (init_size) {
1399                 src = &ucode->data[inst_size + data_size];
1400                 len = priv->ucode_init.len;
1401                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1402                                 len);
1403                 memcpy(priv->ucode_init.v_addr, src, len);
1404         }
1405
1406         /* Initialization data (4th block) */
1407         if (init_data_size) {
1408                 src = &ucode->data[inst_size + data_size + init_size];
1409                 len = priv->ucode_init_data.len;
1410                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1411                                len);
1412                 memcpy(priv->ucode_init_data.v_addr, src, len);
1413         }
1414
1415         /* Bootstrap instructions (5th block) */
1416         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1417         len = priv->ucode_boot.len;
1418         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1419         memcpy(priv->ucode_boot.v_addr, src, len);
1420
1421         /* We have our copies now, allow OS release its copies */
1422         release_firmware(ucode_raw);
1423         return 0;
1424
1425  err_pci_alloc:
1426         IWL_ERR(priv, "failed to allocate pci memory\n");
1427         ret = -ENOMEM;
1428         iwl_dealloc_ucode_pci(priv);
1429
1430  err_release:
1431         release_firmware(ucode_raw);
1432
1433  error:
1434         return ret;
1435 }
1436
1437 /**
1438  * iwl_alive_start - called after REPLY_ALIVE notification received
1439  *                   from protocol/runtime uCode (initialization uCode's
1440  *                   Alive gets handled by iwl_init_alive_start()).
1441  */
1442 static void iwl_alive_start(struct iwl_priv *priv)
1443 {
1444         int ret = 0;
1445
1446         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1447
1448         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1449                 /* We had an error bringing up the hardware, so take it
1450                  * all the way back down so we can try again */
1451                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1452                 goto restart;
1453         }
1454
1455         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1456          * This is a paranoid check, because we would not have gotten the
1457          * "runtime" alive if code weren't properly loaded.  */
1458         if (iwl_verify_ucode(priv)) {
1459                 /* Runtime instruction load was bad;
1460                  * take it all the way back down so we can try again */
1461                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1462                 goto restart;
1463         }
1464
1465         priv->cfg->ops->smgmt->clear_station_table(priv);
1466         ret = priv->cfg->ops->lib->alive_notify(priv);
1467         if (ret) {
1468                 IWL_WARN(priv,
1469                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
1470                 goto restart;
1471         }
1472
1473         /* After the ALIVE response, we can send host commands to the uCode */
1474         set_bit(STATUS_ALIVE, &priv->status);
1475
1476         if (iwl_is_rfkill(priv))
1477                 return;
1478
1479         ieee80211_wake_queues(priv->hw);
1480
1481         priv->active_rate = priv->rates_mask;
1482         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1483
1484         if (iwl_is_associated(priv)) {
1485                 struct iwl_rxon_cmd *active_rxon =
1486                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1487                 /* apply any changes in staging */
1488                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1489                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1490         } else {
1491                 /* Initialize our rx_config data */
1492                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1493
1494                 if (priv->cfg->ops->hcmd->set_rxon_chain)
1495                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
1496
1497                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1498         }
1499
1500         /* Configure Bluetooth device coexistence support */
1501         iwl_send_bt_config(priv);
1502
1503         iwl_reset_run_time_calib(priv);
1504
1505         /* Configure the adapter for unassociated operation */
1506         iwlcore_commit_rxon(priv);
1507
1508         /* At this point, the NIC is initialized and operational */
1509         iwl_rf_kill_ct_config(priv);
1510
1511         iwl_leds_register(priv);
1512
1513         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1514         set_bit(STATUS_READY, &priv->status);
1515         wake_up_interruptible(&priv->wait_command_queue);
1516
1517         if (priv->error_recovering)
1518                 iwl_error_recovery(priv);
1519
1520         iwl_power_update_mode(priv, 1);
1521
1522         /* reassociate for ADHOC mode */
1523         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1524                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1525                                                                 priv->vif);
1526                 if (beacon)
1527                         iwl_mac_beacon_update(priv->hw, beacon);
1528         }
1529
1530
1531         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1532                 iwl_set_mode(priv, priv->iw_mode);
1533
1534         return;
1535
1536  restart:
1537         queue_work(priv->workqueue, &priv->restart);
1538 }
1539
1540 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1541
1542 static void __iwl_down(struct iwl_priv *priv)
1543 {
1544         unsigned long flags;
1545         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1546
1547         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1548
1549         if (!exit_pending)
1550                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1551
1552         iwl_leds_unregister(priv);
1553
1554         priv->cfg->ops->smgmt->clear_station_table(priv);
1555
1556         /* Unblock any waiting calls */
1557         wake_up_interruptible_all(&priv->wait_command_queue);
1558
1559         /* Wipe out the EXIT_PENDING status bit if we are not actually
1560          * exiting the module */
1561         if (!exit_pending)
1562                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1563
1564         /* stop and reset the on-board processor */
1565         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1566
1567         /* tell the device to stop sending interrupts */
1568         spin_lock_irqsave(&priv->lock, flags);
1569         iwl_disable_interrupts(priv);
1570         spin_unlock_irqrestore(&priv->lock, flags);
1571         iwl_synchronize_irq(priv);
1572
1573         if (priv->mac80211_registered)
1574                 ieee80211_stop_queues(priv->hw);
1575
1576         /* If we have not previously called iwl_init() then
1577          * clear all bits but the RF Kill bits and return */
1578         if (!iwl_is_init(priv)) {
1579                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1580                                         STATUS_RF_KILL_HW |
1581                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1582                                         STATUS_RF_KILL_SW |
1583                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1584                                         STATUS_GEO_CONFIGURED |
1585                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1586                                         STATUS_EXIT_PENDING;
1587                 goto exit;
1588         }
1589
1590         /* ...otherwise clear out all the status bits but the RF Kill
1591          * bits and continue taking the NIC down. */
1592         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1593                                 STATUS_RF_KILL_HW |
1594                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1595                                 STATUS_RF_KILL_SW |
1596                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1597                                 STATUS_GEO_CONFIGURED |
1598                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1599                                 STATUS_FW_ERROR |
1600                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1601                                 STATUS_EXIT_PENDING;
1602
1603         spin_lock_irqsave(&priv->lock, flags);
1604         iwl_clear_bit(priv, CSR_GP_CNTRL,
1605                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1606         spin_unlock_irqrestore(&priv->lock, flags);
1607
1608         iwl_txq_ctx_stop(priv);
1609         iwl_rxq_stop(priv);
1610
1611         spin_lock_irqsave(&priv->lock, flags);
1612         if (!iwl_grab_nic_access(priv)) {
1613                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1614                                          APMG_CLK_VAL_DMA_CLK_RQT);
1615                 iwl_release_nic_access(priv);
1616         }
1617         spin_unlock_irqrestore(&priv->lock, flags);
1618
1619         udelay(5);
1620
1621         /* FIXME: apm_ops.suspend(priv) */
1622         if (exit_pending)
1623                 priv->cfg->ops->lib->apm_ops.stop(priv);
1624         else
1625                 priv->cfg->ops->lib->apm_ops.reset(priv);
1626  exit:
1627         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1628
1629         if (priv->ibss_beacon)
1630                 dev_kfree_skb(priv->ibss_beacon);
1631         priv->ibss_beacon = NULL;
1632
1633         /* clear out any free frames */
1634         iwl_clear_free_frames(priv);
1635 }
1636
1637 static void iwl_down(struct iwl_priv *priv)
1638 {
1639         mutex_lock(&priv->mutex);
1640         __iwl_down(priv);
1641         mutex_unlock(&priv->mutex);
1642
1643         iwl_cancel_deferred_work(priv);
1644 }
1645
1646 #define MAX_HW_RESTARTS 5
1647
1648 static int __iwl_up(struct iwl_priv *priv)
1649 {
1650         int i;
1651         int ret;
1652
1653         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1654                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1655                 return -EIO;
1656         }
1657
1658         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1659                 IWL_ERR(priv, "ucode not available for device bringup\n");
1660                 return -EIO;
1661         }
1662
1663         /* If platform's RF_KILL switch is NOT set to KILL */
1664         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1665                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1666         else
1667                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1668
1669         if (iwl_is_rfkill(priv)) {
1670                 iwl_enable_interrupts(priv);
1671                 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1672                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1673                 return 0;
1674         }
1675
1676         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1677
1678         ret = iwl_hw_nic_init(priv);
1679         if (ret) {
1680                 IWL_ERR(priv, "Unable to init nic\n");
1681                 return ret;
1682         }
1683
1684         /* make sure rfkill handshake bits are cleared */
1685         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1686         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1687                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1688
1689         /* clear (again), then enable host interrupts */
1690         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1691         iwl_enable_interrupts(priv);
1692
1693         /* really make sure rfkill handshake bits are cleared */
1694         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1695         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1696
1697         /* Copy original ucode data image from disk into backup cache.
1698          * This will be used to initialize the on-board processor's
1699          * data SRAM for a clean start when the runtime program first loads. */
1700         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1701                priv->ucode_data.len);
1702
1703         for (i = 0; i < MAX_HW_RESTARTS; i++) {
1704
1705                 priv->cfg->ops->smgmt->clear_station_table(priv);
1706
1707                 /* load bootstrap state machine,
1708                  * load bootstrap program into processor's memory,
1709                  * prepare to load the "initialize" uCode */
1710                 ret = priv->cfg->ops->lib->load_ucode(priv);
1711
1712                 if (ret) {
1713                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1714                                 ret);
1715                         continue;
1716                 }
1717
1718                 /* Clear out the uCode error bit if it is set */
1719                 clear_bit(STATUS_FW_ERROR, &priv->status);
1720
1721                 /* start card; "initialize" will load runtime ucode */
1722                 iwl_nic_start(priv);
1723
1724                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1725
1726                 return 0;
1727         }
1728
1729         set_bit(STATUS_EXIT_PENDING, &priv->status);
1730         __iwl_down(priv);
1731         clear_bit(STATUS_EXIT_PENDING, &priv->status);
1732
1733         /* tried to restart and config the device for as long as our
1734          * patience could withstand */
1735         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1736         return -EIO;
1737 }
1738
1739
1740 /*****************************************************************************
1741  *
1742  * Workqueue callbacks
1743  *
1744  *****************************************************************************/
1745
1746 static void iwl_bg_init_alive_start(struct work_struct *data)
1747 {
1748         struct iwl_priv *priv =
1749             container_of(data, struct iwl_priv, init_alive_start.work);
1750
1751         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1752                 return;
1753
1754         mutex_lock(&priv->mutex);
1755         priv->cfg->ops->lib->init_alive_start(priv);
1756         mutex_unlock(&priv->mutex);
1757 }
1758
1759 static void iwl_bg_alive_start(struct work_struct *data)
1760 {
1761         struct iwl_priv *priv =
1762             container_of(data, struct iwl_priv, alive_start.work);
1763
1764         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1765                 return;
1766
1767         mutex_lock(&priv->mutex);
1768         iwl_alive_start(priv);
1769         mutex_unlock(&priv->mutex);
1770 }
1771
1772 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1773 {
1774         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1775                         run_time_calib_work);
1776
1777         mutex_lock(&priv->mutex);
1778
1779         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1780             test_bit(STATUS_SCANNING, &priv->status)) {
1781                 mutex_unlock(&priv->mutex);
1782                 return;
1783         }
1784
1785         if (priv->start_calib) {
1786                 iwl_chain_noise_calibration(priv, &priv->statistics);
1787
1788                 iwl_sensitivity_calibration(priv, &priv->statistics);
1789         }
1790
1791         mutex_unlock(&priv->mutex);
1792         return;
1793 }
1794
1795 static void iwl_bg_up(struct work_struct *data)
1796 {
1797         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
1798
1799         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1800                 return;
1801
1802         mutex_lock(&priv->mutex);
1803         __iwl_up(priv);
1804         mutex_unlock(&priv->mutex);
1805         iwl_rfkill_set_hw_state(priv);
1806 }
1807
1808 static void iwl_bg_restart(struct work_struct *data)
1809 {
1810         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1811
1812         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1813                 return;
1814
1815         iwl_down(priv);
1816         queue_work(priv->workqueue, &priv->up);
1817 }
1818
1819 static void iwl_bg_rx_replenish(struct work_struct *data)
1820 {
1821         struct iwl_priv *priv =
1822             container_of(data, struct iwl_priv, rx_replenish);
1823
1824         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1825                 return;
1826
1827         mutex_lock(&priv->mutex);
1828         iwl_rx_replenish(priv);
1829         mutex_unlock(&priv->mutex);
1830 }
1831
1832 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1833
1834 void iwl_post_associate(struct iwl_priv *priv)
1835 {
1836         struct ieee80211_conf *conf = NULL;
1837         int ret = 0;
1838         unsigned long flags;
1839
1840         if (priv->iw_mode == NL80211_IFTYPE_AP) {
1841                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
1842                 return;
1843         }
1844
1845         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
1846                         priv->assoc_id, priv->active_rxon.bssid_addr);
1847
1848
1849         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1850                 return;
1851
1852
1853         if (!priv->vif || !priv->is_open)
1854                 return;
1855
1856         iwl_power_cancel_timeout(priv);
1857         iwl_scan_cancel_timeout(priv, 200);
1858
1859         conf = ieee80211_get_hw_conf(priv->hw);
1860
1861         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1862         iwlcore_commit_rxon(priv);
1863
1864         iwl_setup_rxon_timing(priv);
1865         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
1866                               sizeof(priv->rxon_timing), &priv->rxon_timing);
1867         if (ret)
1868                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
1869                             "Attempting to continue.\n");
1870
1871         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1872
1873         iwl_set_rxon_ht(priv, &priv->current_ht_config);
1874
1875         if (priv->cfg->ops->hcmd->set_rxon_chain)
1876                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1877
1878         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
1879
1880         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
1881                         priv->assoc_id, priv->beacon_int);
1882
1883         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1884                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1885         else
1886                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1887
1888         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
1889                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1890                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1891                 else
1892                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1893
1894                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1895                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1896
1897         }
1898
1899         iwlcore_commit_rxon(priv);
1900
1901         switch (priv->iw_mode) {
1902         case NL80211_IFTYPE_STATION:
1903                 break;
1904
1905         case NL80211_IFTYPE_ADHOC:
1906
1907                 /* assume default assoc id */
1908                 priv->assoc_id = 1;
1909
1910                 iwl_rxon_add_station(priv, priv->bssid, 0);
1911                 iwl_send_beacon_cmd(priv);
1912
1913                 break;
1914
1915         default:
1916                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
1917                           __func__, priv->iw_mode);
1918                 break;
1919         }
1920
1921         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1922                 priv->assoc_station_added = 1;
1923
1924         spin_lock_irqsave(&priv->lock, flags);
1925         iwl_activate_qos(priv, 0);
1926         spin_unlock_irqrestore(&priv->lock, flags);
1927
1928         /* the chain noise calibration will enabled PM upon completion
1929          * If chain noise has already been run, then we need to enable
1930          * power management here */
1931         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
1932                 iwl_power_enable_management(priv);
1933
1934         /* Enable Rx differential gain and sensitivity calibrations */
1935         iwl_chain_noise_reset(priv);
1936         priv->start_calib = 1;
1937
1938 }
1939
1940 /*****************************************************************************
1941  *
1942  * mac80211 entry point functions
1943  *
1944  *****************************************************************************/
1945
1946 #define UCODE_READY_TIMEOUT     (4 * HZ)
1947
1948 static int iwl_mac_start(struct ieee80211_hw *hw)
1949 {
1950         struct iwl_priv *priv = hw->priv;
1951         int ret;
1952
1953         IWL_DEBUG_MAC80211(priv, "enter\n");
1954
1955         /* we should be verifying the device is ready to be opened */
1956         mutex_lock(&priv->mutex);
1957
1958         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
1959         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
1960          * ucode filename and max sizes are card-specific. */
1961
1962         if (!priv->ucode_code.len) {
1963                 ret = iwl_read_ucode(priv);
1964                 if (ret) {
1965                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
1966                         mutex_unlock(&priv->mutex);
1967                         return ret;
1968                 }
1969         }
1970
1971         ret = __iwl_up(priv);
1972
1973         mutex_unlock(&priv->mutex);
1974
1975         iwl_rfkill_set_hw_state(priv);
1976
1977         if (ret)
1978                 return ret;
1979
1980         if (iwl_is_rfkill(priv))
1981                 goto out;
1982
1983         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1984
1985         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
1986          * mac80211 will not be run successfully. */
1987         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
1988                         test_bit(STATUS_READY, &priv->status),
1989                         UCODE_READY_TIMEOUT);
1990         if (!ret) {
1991                 if (!test_bit(STATUS_READY, &priv->status)) {
1992                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
1993                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
1994                         return -ETIMEDOUT;
1995                 }
1996         }
1997
1998 out:
1999         priv->is_open = 1;
2000         IWL_DEBUG_MAC80211(priv, "leave\n");
2001         return 0;
2002 }
2003
2004 static void iwl_mac_stop(struct ieee80211_hw *hw)
2005 {
2006         struct iwl_priv *priv = hw->priv;
2007
2008         IWL_DEBUG_MAC80211(priv, "enter\n");
2009
2010         if (!priv->is_open) {
2011                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
2012                 return;
2013         }
2014
2015         priv->is_open = 0;
2016
2017         if (iwl_is_ready_rf(priv)) {
2018                 /* stop mac, cancel any scan request and clear
2019                  * RXON_FILTER_ASSOC_MSK BIT
2020                  */
2021                 mutex_lock(&priv->mutex);
2022                 iwl_scan_cancel_timeout(priv, 100);
2023                 mutex_unlock(&priv->mutex);
2024         }
2025
2026         iwl_down(priv);
2027
2028         flush_workqueue(priv->workqueue);
2029
2030         /* enable interrupts again in order to receive rfkill changes */
2031         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2032         iwl_enable_interrupts(priv);
2033
2034         IWL_DEBUG_MAC80211(priv, "leave\n");
2035 }
2036
2037 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2038 {
2039         struct iwl_priv *priv = hw->priv;
2040
2041         IWL_DEBUG_MACDUMP(priv, "enter\n");
2042
2043         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2044                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2045
2046         if (iwl_tx_skb(priv, skb))
2047                 dev_kfree_skb_any(skb);
2048
2049         IWL_DEBUG_MACDUMP(priv, "leave\n");
2050         return NETDEV_TX_OK;
2051 }
2052
2053 void iwl_config_ap(struct iwl_priv *priv)
2054 {
2055         int ret = 0;
2056         unsigned long flags;
2057
2058         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2059                 return;
2060
2061         /* The following should be done only at AP bring up */
2062         if (!iwl_is_associated(priv)) {
2063
2064                 /* RXON - unassoc (to set timing command) */
2065                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2066                 iwlcore_commit_rxon(priv);
2067
2068                 /* RXON Timing */
2069                 iwl_setup_rxon_timing(priv);
2070                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2071                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2072                 if (ret)
2073                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2074                                         "Attempting to continue.\n");
2075
2076                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2077                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2078
2079                 /* FIXME: what should be the assoc_id for AP? */
2080                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2081                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2082                         priv->staging_rxon.flags |=
2083                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2084                 else
2085                         priv->staging_rxon.flags &=
2086                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2087
2088                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2089                         if (priv->assoc_capability &
2090                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2091                                 priv->staging_rxon.flags |=
2092                                         RXON_FLG_SHORT_SLOT_MSK;
2093                         else
2094                                 priv->staging_rxon.flags &=
2095                                         ~RXON_FLG_SHORT_SLOT_MSK;
2096
2097                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2098                                 priv->staging_rxon.flags &=
2099                                         ~RXON_FLG_SHORT_SLOT_MSK;
2100                 }
2101                 /* restore RXON assoc */
2102                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2103                 iwlcore_commit_rxon(priv);
2104                 spin_lock_irqsave(&priv->lock, flags);
2105                 iwl_activate_qos(priv, 1);
2106                 spin_unlock_irqrestore(&priv->lock, flags);
2107                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2108         }
2109         iwl_send_beacon_cmd(priv);
2110
2111         /* FIXME - we need to add code here to detect a totally new
2112          * configuration, reset the AP, unassoc, rxon timing, assoc,
2113          * clear sta table, add BCAST sta... */
2114 }
2115
2116 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2117                         struct ieee80211_key_conf *keyconf, const u8 *addr,
2118                         u32 iv32, u16 *phase1key)
2119 {
2120
2121         struct iwl_priv *priv = hw->priv;
2122         IWL_DEBUG_MAC80211(priv, "enter\n");
2123
2124         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2125
2126         IWL_DEBUG_MAC80211(priv, "leave\n");
2127 }
2128
2129 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2130                            struct ieee80211_vif *vif,
2131                            struct ieee80211_sta *sta,
2132                            struct ieee80211_key_conf *key)
2133 {
2134         struct iwl_priv *priv = hw->priv;
2135         const u8 *addr;
2136         int ret;
2137         u8 sta_id;
2138         bool is_default_wep_key = false;
2139
2140         IWL_DEBUG_MAC80211(priv, "enter\n");
2141
2142         if (priv->hw_params.sw_crypto) {
2143                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2144                 return -EOPNOTSUPP;
2145         }
2146         addr = sta ? sta->addr : iwl_bcast_addr;
2147         sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
2148         if (sta_id == IWL_INVALID_STATION) {
2149                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2150                                    addr);
2151                 return -EINVAL;
2152
2153         }
2154
2155         mutex_lock(&priv->mutex);
2156         iwl_scan_cancel_timeout(priv, 100);
2157         mutex_unlock(&priv->mutex);
2158
2159         /* If we are getting WEP group key and we didn't receive any key mapping
2160          * so far, we are in legacy wep mode (group key only), otherwise we are
2161          * in 1X mode.
2162          * In legacy wep mode, we use another host command to the uCode */
2163         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2164                 priv->iw_mode != NL80211_IFTYPE_AP) {
2165                 if (cmd == SET_KEY)
2166                         is_default_wep_key = !priv->key_mapping_key;
2167                 else
2168                         is_default_wep_key =
2169                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2170         }
2171
2172         switch (cmd) {
2173         case SET_KEY:
2174                 if (is_default_wep_key)
2175                         ret = iwl_set_default_wep_key(priv, key);
2176                 else
2177                         ret = iwl_set_dynamic_key(priv, key, sta_id);
2178
2179                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2180                 break;
2181         case DISABLE_KEY:
2182                 if (is_default_wep_key)
2183                         ret = iwl_remove_default_wep_key(priv, key);
2184                 else
2185                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
2186
2187                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2188                 break;
2189         default:
2190                 ret = -EINVAL;
2191         }
2192
2193         IWL_DEBUG_MAC80211(priv, "leave\n");
2194
2195         return ret;
2196 }
2197
2198 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2199                              enum ieee80211_ampdu_mlme_action action,
2200                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2201 {
2202         struct iwl_priv *priv = hw->priv;
2203         int ret;
2204
2205         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2206                      sta->addr, tid);
2207
2208         if (!(priv->cfg->sku & IWL_SKU_N))
2209                 return -EACCES;
2210
2211         switch (action) {
2212         case IEEE80211_AMPDU_RX_START:
2213                 IWL_DEBUG_HT(priv, "start Rx\n");
2214                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2215         case IEEE80211_AMPDU_RX_STOP:
2216                 IWL_DEBUG_HT(priv, "stop Rx\n");
2217                 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2218                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2219                         return 0;
2220                 else
2221                         return ret;
2222         case IEEE80211_AMPDU_TX_START:
2223                 IWL_DEBUG_HT(priv, "start Tx\n");
2224                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2225         case IEEE80211_AMPDU_TX_STOP:
2226                 IWL_DEBUG_HT(priv, "stop Tx\n");
2227                 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2228                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2229                         return 0;
2230                 else
2231                         return ret;
2232         default:
2233                 IWL_DEBUG_HT(priv, "unknown\n");
2234                 return -EINVAL;
2235                 break;
2236         }
2237         return 0;
2238 }
2239
2240 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2241                              struct ieee80211_low_level_stats *stats)
2242 {
2243         struct iwl_priv *priv = hw->priv;
2244
2245         priv = hw->priv;
2246         IWL_DEBUG_MAC80211(priv, "enter\n");
2247         IWL_DEBUG_MAC80211(priv, "leave\n");
2248
2249         return 0;
2250 }
2251
2252 /*****************************************************************************
2253  *
2254  * sysfs attributes
2255  *
2256  *****************************************************************************/
2257
2258 #ifdef CONFIG_IWLWIFI_DEBUG
2259
2260 /*
2261  * The following adds a new attribute to the sysfs representation
2262  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2263  * used for controlling the debug level.
2264  *
2265  * See the level definitions in iwl for details.
2266  */
2267
2268 static ssize_t show_debug_level(struct device *d,
2269                                 struct device_attribute *attr, char *buf)
2270 {
2271         struct iwl_priv *priv = d->driver_data;
2272
2273         return sprintf(buf, "0x%08X\n", priv->debug_level);
2274 }
2275 static ssize_t store_debug_level(struct device *d,
2276                                 struct device_attribute *attr,
2277                                  const char *buf, size_t count)
2278 {
2279         struct iwl_priv *priv = d->driver_data;
2280         unsigned long val;
2281         int ret;
2282
2283         ret = strict_strtoul(buf, 0, &val);
2284         if (ret)
2285                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2286         else
2287                 priv->debug_level = val;
2288
2289         return strnlen(buf, count);
2290 }
2291
2292 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2293                         show_debug_level, store_debug_level);
2294
2295
2296 #endif /* CONFIG_IWLWIFI_DEBUG */
2297
2298
2299 static ssize_t show_version(struct device *d,
2300                                 struct device_attribute *attr, char *buf)
2301 {
2302         struct iwl_priv *priv = d->driver_data;
2303         struct iwl_alive_resp *palive = &priv->card_alive;
2304         ssize_t pos = 0;
2305         u16 eeprom_ver;
2306
2307         if (palive->is_valid)
2308                 pos += sprintf(buf + pos,
2309                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2310                                 "fw type: 0x%01X 0x%01X\n",
2311                                 palive->ucode_major, palive->ucode_minor,
2312                                 palive->sw_rev[0], palive->sw_rev[1],
2313                                 palive->ver_type, palive->ver_subtype);
2314         else
2315                 pos += sprintf(buf + pos, "fw not loaded\n");
2316
2317         if (priv->eeprom) {
2318                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
2319                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
2320                                  eeprom_ver);
2321         } else {
2322                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
2323         }
2324
2325         return pos;
2326 }
2327
2328 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
2329
2330 static ssize_t show_temperature(struct device *d,
2331                                 struct device_attribute *attr, char *buf)
2332 {
2333         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2334
2335         if (!iwl_is_alive(priv))
2336                 return -EAGAIN;
2337
2338         return sprintf(buf, "%d\n", priv->temperature);
2339 }
2340
2341 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2342
2343 static ssize_t show_tx_power(struct device *d,
2344                              struct device_attribute *attr, char *buf)
2345 {
2346         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2347
2348         if (!iwl_is_ready_rf(priv))
2349                 return sprintf(buf, "off\n");
2350         else
2351                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2352 }
2353
2354 static ssize_t store_tx_power(struct device *d,
2355                               struct device_attribute *attr,
2356                               const char *buf, size_t count)
2357 {
2358         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2359         unsigned long val;
2360         int ret;
2361
2362         ret = strict_strtoul(buf, 10, &val);
2363         if (ret)
2364                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2365         else
2366                 iwl_set_tx_power(priv, val, false);
2367
2368         return count;
2369 }
2370
2371 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2372
2373 static ssize_t show_flags(struct device *d,
2374                           struct device_attribute *attr, char *buf)
2375 {
2376         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2377
2378         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2379 }
2380
2381 static ssize_t store_flags(struct device *d,
2382                            struct device_attribute *attr,
2383                            const char *buf, size_t count)
2384 {
2385         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2386         unsigned long val;
2387         u32 flags;
2388         int ret = strict_strtoul(buf, 0, &val);
2389         if (ret)
2390                 return ret;
2391         flags = (u32)val;
2392
2393         mutex_lock(&priv->mutex);
2394         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
2395                 /* Cancel any currently running scans... */
2396                 if (iwl_scan_cancel_timeout(priv, 100))
2397                         IWL_WARN(priv, "Could not cancel scan.\n");
2398                 else {
2399                         IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
2400                         priv->staging_rxon.flags = cpu_to_le32(flags);
2401                         iwlcore_commit_rxon(priv);
2402                 }
2403         }
2404         mutex_unlock(&priv->mutex);
2405
2406         return count;
2407 }
2408
2409 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
2410
2411 static ssize_t show_filter_flags(struct device *d,
2412                                  struct device_attribute *attr, char *buf)
2413 {
2414         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2415
2416         return sprintf(buf, "0x%04X\n",
2417                 le32_to_cpu(priv->active_rxon.filter_flags));
2418 }
2419
2420 static ssize_t store_filter_flags(struct device *d,
2421                                   struct device_attribute *attr,
2422                                   const char *buf, size_t count)
2423 {
2424         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2425         unsigned long val;
2426         u32 filter_flags;
2427         int ret = strict_strtoul(buf, 0, &val);
2428         if (ret)
2429                 return ret;
2430         filter_flags = (u32)val;
2431
2432         mutex_lock(&priv->mutex);
2433         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
2434                 /* Cancel any currently running scans... */
2435                 if (iwl_scan_cancel_timeout(priv, 100))
2436                         IWL_WARN(priv, "Could not cancel scan.\n");
2437                 else {
2438                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
2439                                        "0x%04X\n", filter_flags);
2440                         priv->staging_rxon.filter_flags =
2441                                 cpu_to_le32(filter_flags);
2442                         iwlcore_commit_rxon(priv);
2443                 }
2444         }
2445         mutex_unlock(&priv->mutex);
2446
2447         return count;
2448 }
2449
2450 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
2451                    store_filter_flags);
2452
2453 static ssize_t store_power_level(struct device *d,
2454                                  struct device_attribute *attr,
2455                                  const char *buf, size_t count)
2456 {
2457         struct iwl_priv *priv = dev_get_drvdata(d);
2458         int ret;
2459         unsigned long mode;
2460
2461
2462         mutex_lock(&priv->mutex);
2463
2464         ret = strict_strtoul(buf, 10, &mode);
2465         if (ret)
2466                 goto out;
2467
2468         ret = iwl_power_set_user_mode(priv, mode);
2469         if (ret) {
2470                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
2471                 goto out;
2472         }
2473         ret = count;
2474
2475  out:
2476         mutex_unlock(&priv->mutex);
2477         return ret;
2478 }
2479
2480 static ssize_t show_power_level(struct device *d,
2481                                 struct device_attribute *attr, char *buf)
2482 {
2483         struct iwl_priv *priv = dev_get_drvdata(d);
2484         int mode = priv->power_data.user_power_setting;
2485         int system = priv->power_data.system_power_setting;
2486         int level = priv->power_data.power_mode;
2487         char *p = buf;
2488
2489         switch (system) {
2490         case IWL_POWER_SYS_AUTO:
2491                 p += sprintf(p, "SYSTEM:auto");
2492                 break;
2493         case IWL_POWER_SYS_AC:
2494                 p += sprintf(p, "SYSTEM:ac");
2495                 break;
2496         case IWL_POWER_SYS_BATTERY:
2497                 p += sprintf(p, "SYSTEM:battery");
2498                 break;
2499         }
2500
2501         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
2502                         "fixed" : "auto");
2503         p += sprintf(p, "\tINDEX:%d", level);
2504         p += sprintf(p, "\n");
2505         return p - buf + 1;
2506 }
2507
2508 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
2509                    store_power_level);
2510
2511
2512 static ssize_t show_statistics(struct device *d,
2513                                struct device_attribute *attr, char *buf)
2514 {
2515         struct iwl_priv *priv = dev_get_drvdata(d);
2516         u32 size = sizeof(struct iwl_notif_statistics);
2517         u32 len = 0, ofs = 0;
2518         u8 *data = (u8 *)&priv->statistics;
2519         int rc = 0;
2520
2521         if (!iwl_is_alive(priv))
2522                 return -EAGAIN;
2523
2524         mutex_lock(&priv->mutex);
2525         rc = iwl_send_statistics_request(priv, 0);
2526         mutex_unlock(&priv->mutex);
2527
2528         if (rc) {
2529                 len = sprintf(buf,
2530                               "Error sending statistics request: 0x%08X\n", rc);
2531                 return len;
2532         }
2533
2534         while (size && (PAGE_SIZE - len)) {
2535                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
2536                                    PAGE_SIZE - len, 1);
2537                 len = strlen(buf);
2538                 if (PAGE_SIZE - len)
2539                         buf[len++] = '\n';
2540
2541                 ofs += 16;
2542                 size -= min(size, 16U);
2543         }
2544
2545         return len;
2546 }
2547
2548 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
2549
2550
2551 /*****************************************************************************
2552  *
2553  * driver setup and teardown
2554  *
2555  *****************************************************************************/
2556
2557 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2558 {
2559         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2560
2561         init_waitqueue_head(&priv->wait_command_queue);
2562
2563         INIT_WORK(&priv->up, iwl_bg_up);
2564         INIT_WORK(&priv->restart, iwl_bg_restart);
2565         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
2566         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
2567         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2568         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2569         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
2570         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
2571
2572         iwl_setup_scan_deferred_work(priv);
2573         iwl_setup_power_deferred_work(priv);
2574
2575         if (priv->cfg->ops->lib->setup_deferred_work)
2576                 priv->cfg->ops->lib->setup_deferred_work(priv);
2577
2578         init_timer(&priv->statistics_periodic);
2579         priv->statistics_periodic.data = (unsigned long)priv;
2580         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2581
2582         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2583                      iwl_irq_tasklet, (unsigned long)priv);
2584 }
2585
2586 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2587 {
2588         if (priv->cfg->ops->lib->cancel_deferred_work)
2589                 priv->cfg->ops->lib->cancel_deferred_work(priv);
2590
2591         cancel_delayed_work_sync(&priv->init_alive_start);
2592         cancel_delayed_work(&priv->scan_check);
2593         cancel_delayed_work_sync(&priv->set_power_save);
2594         cancel_delayed_work(&priv->alive_start);
2595         cancel_work_sync(&priv->beacon_update);
2596         del_timer_sync(&priv->statistics_periodic);
2597 }
2598
2599 static struct attribute *iwl_sysfs_entries[] = {
2600         &dev_attr_flags.attr,
2601         &dev_attr_filter_flags.attr,
2602         &dev_attr_power_level.attr,
2603         &dev_attr_statistics.attr,
2604         &dev_attr_temperature.attr,
2605         &dev_attr_tx_power.attr,
2606 #ifdef CONFIG_IWLWIFI_DEBUG
2607         &dev_attr_debug_level.attr,
2608 #endif
2609         &dev_attr_version.attr,
2610
2611         NULL
2612 };
2613
2614 static struct attribute_group iwl_attribute_group = {
2615         .name = NULL,           /* put in device directory */
2616         .attrs = iwl_sysfs_entries,
2617 };
2618
2619 static struct ieee80211_ops iwl_hw_ops = {
2620         .tx = iwl_mac_tx,
2621         .start = iwl_mac_start,
2622         .stop = iwl_mac_stop,
2623         .add_interface = iwl_mac_add_interface,
2624         .remove_interface = iwl_mac_remove_interface,
2625         .config = iwl_mac_config,
2626         .config_interface = iwl_mac_config_interface,
2627         .configure_filter = iwl_configure_filter,
2628         .set_key = iwl_mac_set_key,
2629         .update_tkip_key = iwl_mac_update_tkip_key,
2630         .get_stats = iwl_mac_get_stats,
2631         .get_tx_stats = iwl_mac_get_tx_stats,
2632         .conf_tx = iwl_mac_conf_tx,
2633         .reset_tsf = iwl_mac_reset_tsf,
2634         .bss_info_changed = iwl_bss_info_changed,
2635         .ampdu_action = iwl_mac_ampdu_action,
2636         .hw_scan = iwl_mac_hw_scan
2637 };
2638
2639 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2640 {
2641         int err = 0;
2642         struct iwl_priv *priv;
2643         struct ieee80211_hw *hw;
2644         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
2645         unsigned long flags;
2646         u16 pci_cmd;
2647
2648         /************************
2649          * 1. Allocating HW data
2650          ************************/
2651
2652         /* Disabling hardware scan means that mac80211 will perform scans
2653          * "the hard way", rather than using device's scan. */
2654         if (cfg->mod_params->disable_hw_scan) {
2655                 if (cfg->mod_params->debug & IWL_DL_INFO)
2656                         dev_printk(KERN_DEBUG, &(pdev->dev),
2657                                    "Disabling hw_scan\n");
2658                 iwl_hw_ops.hw_scan = NULL;
2659         }
2660
2661         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
2662         if (!hw) {
2663                 err = -ENOMEM;
2664                 goto out;
2665         }
2666         priv = hw->priv;
2667         /* At this point both hw and priv are allocated. */
2668
2669         SET_IEEE80211_DEV(hw, &pdev->dev);
2670
2671         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
2672         priv->cfg = cfg;
2673         priv->pci_dev = pdev;
2674
2675 #ifdef CONFIG_IWLWIFI_DEBUG
2676         priv->debug_level = priv->cfg->mod_params->debug;
2677         atomic_set(&priv->restrict_refcnt, 0);
2678 #endif
2679
2680         /**************************
2681          * 2. Initializing PCI bus
2682          **************************/
2683         if (pci_enable_device(pdev)) {
2684                 err = -ENODEV;
2685                 goto out_ieee80211_free_hw;
2686         }
2687
2688         pci_set_master(pdev);
2689
2690         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
2691         if (!err)
2692                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
2693         if (err) {
2694                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2695                 if (!err)
2696                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2697                 /* both attempts failed: */
2698                 if (err) {
2699                         IWL_WARN(priv, "No suitable DMA available.\n");
2700                         goto out_pci_disable_device;
2701                 }
2702         }
2703
2704         err = pci_request_regions(pdev, DRV_NAME);
2705         if (err)
2706                 goto out_pci_disable_device;
2707
2708         pci_set_drvdata(pdev, priv);
2709
2710
2711         /***********************
2712          * 3. Read REV register
2713          ***********************/
2714         priv->hw_base = pci_iomap(pdev, 0, 0);
2715         if (!priv->hw_base) {
2716                 err = -ENODEV;
2717                 goto out_pci_release_regions;
2718         }
2719
2720         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
2721                 (unsigned long long) pci_resource_len(pdev, 0));
2722         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
2723
2724         iwl_hw_detect(priv);
2725         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
2726                 priv->cfg->name, priv->hw_rev);
2727
2728         /* We disable the RETRY_TIMEOUT register (0x41) to keep
2729          * PCI Tx retries from interfering with C3 CPU state */
2730         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2731
2732         /* amp init */
2733         err = priv->cfg->ops->lib->apm_ops.init(priv);
2734         if (err < 0) {
2735                 IWL_ERR(priv, "Failed to init APMG\n");
2736                 goto out_iounmap;
2737         }
2738         /*****************
2739          * 4. Read EEPROM
2740          *****************/
2741         /* Read the EEPROM */
2742         err = iwl_eeprom_init(priv);
2743         if (err) {
2744                 IWL_ERR(priv, "Unable to init EEPROM\n");
2745                 goto out_iounmap;
2746         }
2747         err = iwl_eeprom_check_version(priv);
2748         if (err)
2749                 goto out_free_eeprom;
2750
2751         /* extract MAC Address */
2752         iwl_eeprom_get_mac(priv, priv->mac_addr);
2753         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
2754         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2755
2756         /************************
2757          * 5. Setup HW constants
2758          ************************/
2759         if (iwl_set_hw_params(priv)) {
2760                 IWL_ERR(priv, "failed to set hw parameters\n");
2761                 goto out_free_eeprom;
2762         }
2763
2764         /*******************
2765          * 6. Setup priv
2766          *******************/
2767
2768         err = iwl_init_drv(priv);
2769         if (err)
2770                 goto out_free_eeprom;
2771         /* At this point both hw and priv are initialized. */
2772
2773         /********************
2774          * 7. Setup services
2775          ********************/
2776         spin_lock_irqsave(&priv->lock, flags);
2777         iwl_disable_interrupts(priv);
2778         spin_unlock_irqrestore(&priv->lock, flags);
2779
2780         pci_enable_msi(priv->pci_dev);
2781
2782         err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2783                           DRV_NAME, priv);
2784         if (err) {
2785                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
2786                 goto out_disable_msi;
2787         }
2788         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
2789         if (err) {
2790                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2791                 goto out_free_irq;
2792         }
2793
2794         iwl_setup_deferred_work(priv);
2795         iwl_setup_rx_handlers(priv);
2796
2797         /**********************************
2798          * 8. Setup and register mac80211
2799          **********************************/
2800
2801         /* enable interrupts if needed: hw bug w/a */
2802         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2803         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2804                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2805                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2806         }
2807
2808         iwl_enable_interrupts(priv);
2809
2810         err = iwl_setup_mac(priv);
2811         if (err)
2812                 goto out_remove_sysfs;
2813
2814         err = iwl_dbgfs_register(priv, DRV_NAME);
2815         if (err)
2816                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2817
2818         /* If platform's RF_KILL switch is NOT set to KILL */
2819         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2820                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2821         else
2822                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2823
2824         err = iwl_rfkill_init(priv);
2825         if (err)
2826                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
2827                                   "Ignoring error: %d\n", err);
2828         else
2829                 iwl_rfkill_set_hw_state(priv);
2830
2831         iwl_power_initialize(priv);
2832         return 0;
2833
2834  out_remove_sysfs:
2835         destroy_workqueue(priv->workqueue);
2836         priv->workqueue = NULL;
2837         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2838  out_free_irq:
2839         free_irq(priv->pci_dev->irq, priv);
2840  out_disable_msi:
2841         pci_disable_msi(priv->pci_dev);
2842         iwl_uninit_drv(priv);
2843  out_free_eeprom:
2844         iwl_eeprom_free(priv);
2845  out_iounmap:
2846         pci_iounmap(pdev, priv->hw_base);
2847  out_pci_release_regions:
2848         pci_set_drvdata(pdev, NULL);
2849         pci_release_regions(pdev);
2850  out_pci_disable_device:
2851         pci_disable_device(pdev);
2852  out_ieee80211_free_hw:
2853         ieee80211_free_hw(priv->hw);
2854  out:
2855         return err;
2856 }
2857
2858 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
2859 {
2860         struct iwl_priv *priv = pci_get_drvdata(pdev);
2861         unsigned long flags;
2862
2863         if (!priv)
2864                 return;
2865
2866         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
2867
2868         iwl_dbgfs_unregister(priv);
2869         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2870
2871         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
2872          * to be called and iwl_down since we are removing the device
2873          * we need to set STATUS_EXIT_PENDING bit.
2874          */
2875         set_bit(STATUS_EXIT_PENDING, &priv->status);
2876         if (priv->mac80211_registered) {
2877                 ieee80211_unregister_hw(priv->hw);
2878                 priv->mac80211_registered = 0;
2879         } else {
2880                 iwl_down(priv);
2881         }
2882
2883         /* make sure we flush any pending irq or
2884          * tasklet for the driver
2885          */
2886         spin_lock_irqsave(&priv->lock, flags);
2887         iwl_disable_interrupts(priv);
2888         spin_unlock_irqrestore(&priv->lock, flags);
2889
2890         iwl_synchronize_irq(priv);
2891
2892         iwl_rfkill_unregister(priv);
2893         iwl_dealloc_ucode_pci(priv);
2894
2895         if (priv->rxq.bd)
2896                 iwl_rx_queue_free(priv, &priv->rxq);
2897         iwl_hw_txq_ctx_free(priv);
2898
2899         priv->cfg->ops->smgmt->clear_station_table(priv);
2900         iwl_eeprom_free(priv);
2901
2902
2903         /*netif_stop_queue(dev); */
2904         flush_workqueue(priv->workqueue);
2905
2906         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
2907          * priv->workqueue... so we can't take down the workqueue
2908          * until now... */
2909         destroy_workqueue(priv->workqueue);
2910         priv->workqueue = NULL;
2911
2912         free_irq(priv->pci_dev->irq, priv);
2913         pci_disable_msi(priv->pci_dev);
2914         pci_iounmap(pdev, priv->hw_base);
2915         pci_release_regions(pdev);
2916         pci_disable_device(pdev);
2917         pci_set_drvdata(pdev, NULL);
2918
2919         iwl_uninit_drv(priv);
2920
2921         if (priv->ibss_beacon)
2922                 dev_kfree_skb(priv->ibss_beacon);
2923
2924         ieee80211_free_hw(priv->hw);
2925 }
2926
2927
2928 /*****************************************************************************
2929  *
2930  * driver and module entry point
2931  *
2932  *****************************************************************************/
2933
2934 /* Hardware specific file defines the PCI IDs table for that hardware module */
2935 static struct pci_device_id iwl_hw_card_ids[] = {
2936 #ifdef CONFIG_IWL4965
2937         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
2938         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
2939 #endif /* CONFIG_IWL4965 */
2940 #ifdef CONFIG_IWL5000
2941         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
2942         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
2943         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
2944         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
2945         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
2946         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
2947         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
2948         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
2949         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
2950         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
2951 /* 5350 WiFi/WiMax */
2952         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
2953         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
2954         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
2955 /* 5150 Wifi/WiMax */
2956         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
2957         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
2958 /* 6000/6050 Series */
2959         {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
2960         {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
2961         {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
2962         {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
2963         {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
2964         {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
2965         {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
2966         {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
2967         {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
2968         {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
2969         {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
2970 /* 1000 Series WiFi */
2971         {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl1000_bgn_cfg)},
2972         {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl1000_bgn_cfg)},
2973 #endif /* CONFIG_IWL5000 */
2974
2975         {0}
2976 };
2977 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
2978
2979 static struct pci_driver iwl_driver = {
2980         .name = DRV_NAME,
2981         .id_table = iwl_hw_card_ids,
2982         .probe = iwl_pci_probe,
2983         .remove = __devexit_p(iwl_pci_remove),
2984 #ifdef CONFIG_PM
2985         .suspend = iwl_pci_suspend,
2986         .resume = iwl_pci_resume,
2987 #endif
2988 };
2989
2990 static int __init iwl_init(void)
2991 {
2992
2993         int ret;
2994         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
2995         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
2996
2997         ret = iwlagn_rate_control_register();
2998         if (ret) {
2999                 printk(KERN_ERR DRV_NAME
3000                        "Unable to register rate control algorithm: %d\n", ret);
3001                 return ret;
3002         }
3003
3004         ret = pci_register_driver(&iwl_driver);
3005         if (ret) {
3006                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3007                 goto error_register;
3008         }
3009
3010         return ret;
3011
3012 error_register:
3013         iwlagn_rate_control_unregister();
3014         return ret;
3015 }
3016
3017 static void __exit iwl_exit(void)
3018 {
3019         pci_unregister_driver(&iwl_driver);
3020         iwlagn_rate_control_unregister();
3021 }
3022
3023 module_exit(iwl_exit);
3024 module_init(iwl_init);