drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/pci.h>
  36 #include <linux/pci-aspm.h>
  37 #include <linux/slab.h>
  38 #include <linux/dma-mapping.h>
  39 #include <linux/delay.h>
  40 #include <linux/sched.h>
  41 #include <linux/skbuff.h>
  42 #include <linux/netdevice.h>
  43 #include <linux/wireless.h>
  44 #include <linux/firmware.h>
  45 #include <linux/etherdevice.h>
  46 #include <linux/if_arp.h>
  47
  48 #include <net/mac80211.h>
  49
  50 #include <asm/div64.h>
  51
  52 #define DRV_NAME        "iwlagn"
  53
  54 #include "iwl-eeprom.h"
  55 #include "iwl-dev.h"
  56 #include "iwl-core.h"
  57 #include "iwl-io.h"
  58 #include "iwl-helpers.h"
  59 #include "iwl-sta.h"
  60 #include "iwl-calib.h"
  61 #include "iwl-agn.h"
  62
  63
  64 /******************************************************************************
  65  *
  66  * module boiler plate
  67  *
  68  ******************************************************************************/
  69
  70 /*
  71  * module name, copyright, version, etc.
  72  */
  73 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  74
  75 #ifdef CONFIG_IWLWIFI_DEBUG
  76 #define VD "d"
  77 #else
  78 #define VD
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD
  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 static int iwlagn_ant_coupling;
  91 static bool iwlagn_bt_ch_announce = 1;
  92
  93 /**
  94  * iwl_commit_rxon - commit staging_rxon to hardware
  95  *
  96  * The RXON command in staging_rxon is committed to the hardware and
  97  * the active_rxon structure is updated with the new data.  This
  98  * function correctly transitions out of the RXON_ASSOC_MSK state if
  99  * a HW tune is required based on the RXON structure changes.
 100  */
 101 int iwl_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 102 {
 103         /* cast away the const for active_rxon in this function */
 104         struct iwl_rxon_cmd *active_rxon = (void *)&ctx->active;
 105         int ret;
 106         bool new_assoc =
 107                 !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
 108
 109         if (!iwl_is_alive(priv))
 110                 return -EBUSY;
 111
 112         /* always get timestamp with Rx frame */
 113         ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
 114
 115         ret = iwl_check_rxon_cmd(priv, ctx);
 116         if (ret) {
 117                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 118                 return -EINVAL;
 119         }
 120
 121         /*
 122          * receive commit_rxon request
 123          * abort any previous channel switch if still in process
 124          */
 125         if (priv->switch_rxon.switch_in_progress &&
 126             (priv->switch_rxon.channel != ctx->staging.channel)) {
 127                 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
 128                       le16_to_cpu(priv->switch_rxon.channel));
 129                 iwl_chswitch_done(priv, false);
 130         }
 131
 132         /* If we don't need to send a full RXON, we can use
 133          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 134          * and other flags for the current radio configuration. */
 135         if (!iwl_full_rxon_required(priv, ctx)) {
 136                 ret = iwl_send_rxon_assoc(priv, ctx);
 137                 if (ret) {
 138                         IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
 139                         return ret;
 140                 }
 141
 142                 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
 143                 iwl_print_rx_config_cmd(priv, ctx);
 144                 return 0;
 145         }
 146
 147         /* If we are currently associated and the new config requires
 148          * an RXON_ASSOC and the new config wants the associated mask enabled,
 149          * we must clear the associated from the active configuration
 150          * before we apply the new config */
 151         if (iwl_is_associated_ctx(ctx) && new_assoc) {
 152                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 153                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 154
 155                 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
 156                                        sizeof(struct iwl_rxon_cmd),
 157                                        active_rxon);
 158
 159                 /* If the mask clearing failed then we set
 160                  * active_rxon back to what it was previously */
 161                 if (ret) {
 162                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 163                         IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
 164                         return ret;
 165                 }
 166                 iwl_clear_ucode_stations(priv, ctx);
 167                 iwl_restore_stations(priv, ctx);
 168                 ret = iwl_restore_default_wep_keys(priv);
 169                 if (ret) {
 170                         IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
 171                         return ret;
 172                 }
 173         }
 174
 175         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 176                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 177                        "* channel = %d\n"
 178                        "* bssid = %pM\n",
 179                        (new_assoc ? "" : "out"),
 180                        le16_to_cpu(ctx->staging.channel),
 181                        ctx->staging.bssid_addr);
 182
 183         iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto);
 184
 185         /* Apply the new configuration
 186          * RXON unassoc clears the station table in uCode so restoration of
 187          * stations is needed after it (the RXON command) completes
 188          */
 189         if (!new_assoc) {
 190                 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
 191                               sizeof(struct iwl_rxon_cmd), &ctx->staging);
 192                 if (ret) {
 193                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 194                         return ret;
 195                 }
 196                 IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON.\n");
 197                 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
 198                 iwl_clear_ucode_stations(priv, ctx);
 199                 iwl_restore_stations(priv, ctx);
 200                 ret = iwl_restore_default_wep_keys(priv);
 201                 if (ret) {
 202                         IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
 203                         return ret;
 204                 }
 205         }
 206
 207         priv->start_calib = 0;
 208         if (new_assoc) {
 209                 /* Apply the new configuration
 210                  * RXON assoc doesn't clear the station table in uCode,
 211                  */
 212                 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
 213                               sizeof(struct iwl_rxon_cmd), &ctx->staging);
 214                 if (ret) {
 215                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 216                         return ret;
 217                 }
 218                 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
 219         }
 220         iwl_print_rx_config_cmd(priv, ctx);
 221
 222         iwl_init_sensitivity(priv);
 223
 224         /* If we issue a new RXON command which required a tune then we must
 225          * send a new TXPOWER command or we won't be able to Tx any frames */
 226         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 227         if (ret) {
 228                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 229                 return ret;
 230         }
 231
 232         return 0;
 233 }
 234
 235 void iwl_update_chain_flags(struct iwl_priv *priv)
 236 {
 237         struct iwl_rxon_context *ctx;
 238
 239         if (priv->cfg->ops->hcmd->set_rxon_chain) {
 240                 for_each_context(priv, ctx) {
 241                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
 242                         iwlcore_commit_rxon(priv, ctx);
 243                 }
 244         }
 245 }
 246
 247 static void iwl_clear_free_frames(struct iwl_priv *priv)
 248 {
 249         struct list_head *element;
 250
 251         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 252                        priv->frames_count);
 253
 254         while (!list_empty(&priv->free_frames)) {
 255                 element = priv->free_frames.next;
 256                 list_del(element);
 257                 kfree(list_entry(element, struct iwl_frame, list));
 258                 priv->frames_count--;
 259         }
 260
 261         if (priv->frames_count) {
 262                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 263                             priv->frames_count);
 264                 priv->frames_count = 0;
 265         }
 266 }
 267
 268 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 269 {
 270         struct iwl_frame *frame;
 271         struct list_head *element;
 272         if (list_empty(&priv->free_frames)) {
 273                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 274                 if (!frame) {
 275                         IWL_ERR(priv, "Could not allocate frame!\n");
 276                         return NULL;
 277                 }
 278
 279                 priv->frames_count++;
 280                 return frame;
 281         }
 282
 283         element = priv->free_frames.next;
 284         list_del(element);
 285         return list_entry(element, struct iwl_frame, list);
 286 }
 287
 288 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 289 {
 290         memset(frame, 0, sizeof(*frame));
 291         list_add(&frame->list, &priv->free_frames);
 292 }
 293
 294 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
 295                                           struct ieee80211_hdr *hdr,
 296                                           int left)
 297 {
 298         if (!priv->ibss_beacon)
 299                 return 0;
 300
 301         if (priv->ibss_beacon->len > left)
 302                 return 0;
 303
 304         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 305
 306         return priv->ibss_beacon->len;
 307 }
 308
 309 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 310 static void iwl_set_beacon_tim(struct iwl_priv *priv,
 311                 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 312                 u8 *beacon, u32 frame_size)
 313 {
 314         u16 tim_idx;
 315         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 316
 317         /*
 318          * The index is relative to frame start but we start looking at the
 319          * variable-length part of the beacon.
 320          */
 321         tim_idx = mgmt->u.beacon.variable - beacon;
 322
 323         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 324         while ((tim_idx < (frame_size - 2)) &&
 325                         (beacon[tim_idx] != WLAN_EID_TIM))
 326                 tim_idx += beacon[tim_idx+1] + 2;
 327
 328         /* If TIM field was found, set variables */
 329         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 330                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 331                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 332         } else
 333                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 334 }
 335
 336 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 337                                        struct iwl_frame *frame)
 338 {
 339         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 340         u32 frame_size;
 341         u32 rate_flags;
 342         u32 rate;
 343         /*
 344          * We have to set up the TX command, the TX Beacon command, and the
 345          * beacon contents.
 346          */
 347
 348         /* Initialize memory */
 349         tx_beacon_cmd = &frame->u.beacon;
 350         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 351
 352         /* Set up TX beacon contents */
 353         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 354                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 355         if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
 356                 return 0;
 357
 358         /* Set up TX command fields */
 359         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 360 #warning "Use proper STA ID"
 361         tx_beacon_cmd->tx.sta_id =
 362                 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id;
 363         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 364         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 365                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 366
 367         /* Set up TX beacon command fields */
 368         iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
 369                         frame_size);
 370
 371         /* Set up packet rate and flags */
 372         rate = iwl_rate_get_lowest_plcp(priv);
 373         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 374                                               priv->hw_params.valid_tx_ant);
 375         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 376         if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
 377                 rate_flags |= RATE_MCS_CCK_MSK;
 378         tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
 379                         rate_flags);
 380
 381         return sizeof(*tx_beacon_cmd) + frame_size;
 382 }
 383 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 384 {
 385         struct iwl_frame *frame;
 386         unsigned int frame_size;
 387         int rc;
 388
 389         frame = iwl_get_free_frame(priv);
 390         if (!frame) {
 391                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 392                           "command.\n");
 393                 return -ENOMEM;
 394         }
 395
 396         frame_size = iwl_hw_get_beacon_cmd(priv, frame);
 397         if (!frame_size) {
 398                 IWL_ERR(priv, "Error configuring the beacon command\n");
 399                 iwl_free_frame(priv, frame);
 400                 return -EINVAL;
 401         }
 402
 403         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 404                               &frame->u.cmd[0]);
 405
 406         iwl_free_frame(priv, frame);
 407
 408         return rc;
 409 }
 410
 411 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 412 {
 413         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 414
 415         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 416         if (sizeof(dma_addr_t) > sizeof(u32))
 417                 addr |=
 418                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 419
 420         return addr;
 421 }
 422
 423 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 424 {
 425         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 426
 427         return le16_to_cpu(tb->hi_n_len) >> 4;
 428 }
 429
 430 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 431                                   dma_addr_t addr, u16 len)
 432 {
 433         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 434         u16 hi_n_len = len << 4;
 435
 436         put_unaligned_le32(addr, &tb->lo);
 437         if (sizeof(dma_addr_t) > sizeof(u32))
 438                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 439
 440         tb->hi_n_len = cpu_to_le16(hi_n_len);
 441
 442         tfd->num_tbs = idx + 1;
 443 }
 444
 445 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 446 {
 447         return tfd->num_tbs & 0x1f;
 448 }
 449
 450 /**
 451  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 452  * @priv - driver private data
 453  * @txq - tx queue
 454  *
 455  * Does NOT advance any TFD circular buffer read/write indexes
 456  * Does NOT free the TFD itself (which is within circular buffer)
 457  */
 458 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 459 {
 460         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 461         struct iwl_tfd *tfd;
 462         struct pci_dev *dev = priv->pci_dev;
 463         int index = txq->q.read_ptr;
 464         int i;
 465         int num_tbs;
 466
 467         tfd = &tfd_tmp[index];
 468
 469         /* Sanity check on number of chunks */
 470         num_tbs = iwl_tfd_get_num_tbs(tfd);
 471
 472         if (num_tbs >= IWL_NUM_OF_TBS) {
 473                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 474                 /* @todo issue fatal error, it is quite serious situation */
 475                 return;
 476         }
 477
 478         /* Unmap tx_cmd */
 479         if (num_tbs)
 480                 pci_unmap_single(dev,
 481                                 dma_unmap_addr(&txq->meta[index], mapping),
 482                                 dma_unmap_len(&txq->meta[index], len),
 483                                 PCI_DMA_BIDIRECTIONAL);
 484
 485         /* Unmap chunks, if any. */
 486         for (i = 1; i < num_tbs; i++)
 487                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 488                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 489
 490         /* free SKB */
 491         if (txq->txb) {
 492                 struct sk_buff *skb;
 493
 494                 skb = txq->txb[txq->q.read_ptr].skb;
 495
 496                 /* can be called from irqs-disabled context */
 497                 if (skb) {
 498                         dev_kfree_skb_any(skb);
 499                         txq->txb[txq->q.read_ptr].skb = NULL;
 500                 }
 501         }
 502 }
 503
 504 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 505                                  struct iwl_tx_queue *txq,
 506                                  dma_addr_t addr, u16 len,
 507                                  u8 reset, u8 pad)
 508 {
 509         struct iwl_queue *q;
 510         struct iwl_tfd *tfd, *tfd_tmp;
 511         u32 num_tbs;
 512
 513         q = &txq->q;
 514         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 515         tfd = &tfd_tmp[q->write_ptr];
 516
 517         if (reset)
 518                 memset(tfd, 0, sizeof(*tfd));
 519
 520         num_tbs = iwl_tfd_get_num_tbs(tfd);
 521
 522         /* Each TFD can point to a maximum 20 Tx buffers */
 523         if (num_tbs >= IWL_NUM_OF_TBS) {
 524                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 525                           IWL_NUM_OF_TBS);
 526                 return -EINVAL;
 527         }
 528
 529         BUG_ON(addr & ~DMA_BIT_MASK(36));
 530         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 531                 IWL_ERR(priv, "Unaligned address = %llx\n",
 532                           (unsigned long long)addr);
 533
 534         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 535
 536         return 0;
 537 }
 538
 539 /*
 540  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 541  * given Tx queue, and enable the DMA channel used for that queue.
 542  *
 543  * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 544  * channels supported in hardware.
 545  */
 546 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 547                          struct iwl_tx_queue *txq)
 548 {
 549         int txq_id = txq->q.id;
 550
 551         /* Circular buffer (TFD queue in DRAM) physical base address */
 552         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 553                              txq->q.dma_addr >> 8);
 554
 555         return 0;
 556 }
 557
 558 /******************************************************************************
 559  *
 560  * Generic RX handler implementations
 561  *
 562  ******************************************************************************/
 563 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 564                                 struct iwl_rx_mem_buffer *rxb)
 565 {
 566         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 567         struct iwl_alive_resp *palive;
 568         struct delayed_work *pwork;
 569
 570         palive = &pkt->u.alive_frame;
 571
 572         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
 573                        "0x%01X 0x%01X\n",
 574                        palive->is_valid, palive->ver_type,
 575                        palive->ver_subtype);
 576
 577         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 578                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 579                 memcpy(&priv->card_alive_init,
 580                        &pkt->u.alive_frame,
 581                        sizeof(struct iwl_init_alive_resp));
 582                 pwork = &priv->init_alive_start;
 583         } else {
 584                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 585                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 586                        sizeof(struct iwl_alive_resp));
 587                 pwork = &priv->alive_start;
 588         }
 589
 590         /* We delay the ALIVE response by 5ms to
 591          * give the HW RF Kill time to activate... */
 592         if (palive->is_valid == UCODE_VALID_OK)
 593                 queue_delayed_work(priv->workqueue, pwork,
 594                                    msecs_to_jiffies(5));
 595         else
 596                 IWL_WARN(priv, "uCode did not respond OK.\n");
 597 }
 598
 599 static void iwl_bg_beacon_update(struct work_struct *work)
 600 {
 601         struct iwl_priv *priv =
 602                 container_of(work, struct iwl_priv, beacon_update);
 603         struct sk_buff *beacon;
 604
 605         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 606         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 607
 608         if (!beacon) {
 609                 IWL_ERR(priv, "update beacon failed\n");
 610                 return;
 611         }
 612
 613         mutex_lock(&priv->mutex);
 614         /* new beacon skb is allocated every time; dispose previous.*/
 615         if (priv->ibss_beacon)
 616                 dev_kfree_skb(priv->ibss_beacon);
 617
 618         priv->ibss_beacon = beacon;
 619         mutex_unlock(&priv->mutex);
 620
 621         iwl_send_beacon_cmd(priv);
 622 }
 623
 624 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 625 {
 626         struct iwl_priv *priv =
 627                 container_of(work, struct iwl_priv, bt_runtime_config);
 628
 629         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 630                 return;
 631
 632         /* dont send host command if rf-kill is on */
 633         if (!iwl_is_ready_rf(priv))
 634                 return;
 635         priv->cfg->ops->hcmd->send_bt_config(priv);
 636 }
 637
 638 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 639 {
 640         struct iwl_priv *priv =
 641                 container_of(work, struct iwl_priv, bt_full_concurrency);
 642         struct iwl_rxon_context *ctx;
 643
 644         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 645                 return;
 646
 647         /* dont send host command if rf-kill is on */
 648         if (!iwl_is_ready_rf(priv))
 649                 return;
 650
 651         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 652                        priv->bt_full_concurrent ?
 653                        "full concurrency" : "3-wire");
 654
 655         /*
 656          * LQ & RXON updated cmds must be sent before BT Config cmd
 657          * to avoid 3-wire collisions
 658          */
 659         mutex_lock(&priv->mutex);
 660         for_each_context(priv, ctx) {
 661                 if (priv->cfg->ops->hcmd->set_rxon_chain)
 662                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
 663                 iwlcore_commit_rxon(priv, ctx);
 664         }
 665         mutex_unlock(&priv->mutex);
 666
 667         priv->cfg->ops->hcmd->send_bt_config(priv);
 668 }
 669
 670 /**
 671  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 672  *
 673  * This callback is provided in order to send a statistics request.
 674  *
 675  * This timer function is continually reset to execute within
 676  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 677  * was received.  We need to ensure we receive the statistics in order
 678  * to update the temperature used for calibrating the TXPOWER.
 679  */
 680 static void iwl_bg_statistics_periodic(unsigned long data)
 681 {
 682         struct iwl_priv *priv = (struct iwl_priv *)data;
 683
 684         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 685                 return;
 686
 687         /* dont send host command if rf-kill is on */
 688         if (!iwl_is_ready_rf(priv))
 689                 return;
 690
 691         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 692 }
 693
 694
 695 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 696                                         u32 start_idx, u32 num_events,
 697                                         u32 mode)
 698 {
 699         u32 i;
 700         u32 ptr;        /* SRAM byte address of log data */
 701         u32 ev, time, data; /* event log data */
 702         unsigned long reg_flags;
 703
 704         if (mode == 0)
 705                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 706         else
 707                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 708
 709         /* Make sure device is powered up for SRAM reads */
 710         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 711         if (iwl_grab_nic_access(priv)) {
 712                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 713                 return;
 714         }
 715
 716         /* Set starting address; reads will auto-increment */
 717         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
 718         rmb();
 719
 720         /*
 721          * "time" is actually "data" for mode 0 (no timestamp).
 722          * place event id # at far right for easier visual parsing.
 723          */
 724         for (i = 0; i < num_events; i++) {
 725                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 726                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 727                 if (mode == 0) {
 728                         trace_iwlwifi_dev_ucode_cont_event(priv,
 729                                                         0, time, ev);
 730                 } else {
 731                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 732                         trace_iwlwifi_dev_ucode_cont_event(priv,
 733                                                 time, data, ev);
 734                 }
 735         }
 736         /* Allow device to power down */
 737         iwl_release_nic_access(priv);
 738         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 739 }
 740
 741 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 742 {
 743         u32 capacity;   /* event log capacity in # entries */
 744         u32 base;       /* SRAM byte address of event log header */
 745         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 746         u32 num_wraps;  /* # times uCode wrapped to top of log */
 747         u32 next_entry; /* index of next entry to be written by uCode */
 748
 749         if (priv->ucode_type == UCODE_INIT)
 750                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
 751         else
 752                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
 753         if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
 754                 capacity = iwl_read_targ_mem(priv, base);
 755                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 756                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 757                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 758         } else
 759                 return;
 760
 761         if (num_wraps == priv->event_log.num_wraps) {
 762                 iwl_print_cont_event_trace(priv,
 763                                        base, priv->event_log.next_entry,
 764                                        next_entry - priv->event_log.next_entry,
 765                                        mode);
 766                 priv->event_log.non_wraps_count++;
 767         } else {
 768                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 769                         priv->event_log.wraps_more_count++;
 770                 else
 771                         priv->event_log.wraps_once_count++;
 772                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 773                                 num_wraps - priv->event_log.num_wraps,
 774                                 next_entry, priv->event_log.next_entry);
 775                 if (next_entry < priv->event_log.next_entry) {
 776                         iwl_print_cont_event_trace(priv, base,
 777                                priv->event_log.next_entry,
 778                                capacity - priv->event_log.next_entry,
 779                                mode);
 780
 781                         iwl_print_cont_event_trace(priv, base, 0,
 782                                 next_entry, mode);
 783                 } else {
 784                         iwl_print_cont_event_trace(priv, base,
 785                                next_entry, capacity - next_entry,
 786                                mode);
 787
 788                         iwl_print_cont_event_trace(priv, base, 0,
 789                                 next_entry, mode);
 790                 }
 791         }
 792         priv->event_log.num_wraps = num_wraps;
 793         priv->event_log.next_entry = next_entry;
 794 }
 795
 796 /**
 797  * iwl_bg_ucode_trace - Timer callback to log ucode event
 798  *
 799  * The timer is continually set to execute every
 800  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 801  * this function is to perform continuous uCode event logging operation
 802  * if enabled
 803  */
 804 static void iwl_bg_ucode_trace(unsigned long data)
 805 {
 806         struct iwl_priv *priv = (struct iwl_priv *)data;
 807
 808         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 809                 return;
 810
 811         if (priv->event_log.ucode_trace) {
 812                 iwl_continuous_event_trace(priv);
 813                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 814                 mod_timer(&priv->ucode_trace,
 815                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 816         }
 817 }
 818
 819 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 820                                 struct iwl_rx_mem_buffer *rxb)
 821 {
 822         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 823         struct iwl4965_beacon_notif *beacon =
 824                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 825 #ifdef CONFIG_IWLWIFI_DEBUG
 826         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 827
 828         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
 829                 "tsf %d %d rate %d\n",
 830                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 831                 beacon->beacon_notify_hdr.failure_frame,
 832                 le32_to_cpu(beacon->ibss_mgr_status),
 833                 le32_to_cpu(beacon->high_tsf),
 834                 le32_to_cpu(beacon->low_tsf), rate);
 835 #endif
 836
 837         priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
 838
 839         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 840             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 841                 queue_work(priv->workqueue, &priv->beacon_update);
 842 }
 843
 844 /* Handle notification from uCode that card's power state is changing
 845  * due to software, hardware, or critical temperature RFKILL */
 846 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 847                                     struct iwl_rx_mem_buffer *rxb)
 848 {
 849         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 850         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 851         unsigned long status = priv->status;
 852
 853         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
 854                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 855                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 856                           (flags & CT_CARD_DISABLED) ?
 857                           "Reached" : "Not reached");
 858
 859         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 860                      CT_CARD_DISABLED)) {
 861
 862                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 863                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 864
 865                 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 866                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 867
 868                 if (!(flags & RXON_CARD_DISABLED)) {
 869                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 870                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 871                         iwl_write_direct32(priv, HBUS_TARG_MBX_C,
 872                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 873                 }
 874                 if (flags & CT_CARD_DISABLED)
 875                         iwl_tt_enter_ct_kill(priv);
 876         }
 877         if (!(flags & CT_CARD_DISABLED))
 878                 iwl_tt_exit_ct_kill(priv);
 879
 880         if (flags & HW_CARD_DISABLED)
 881                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 882         else
 883                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 884
 885
 886         if (!(flags & RXON_CARD_DISABLED))
 887                 iwl_scan_cancel(priv);
 888
 889         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
 890              test_bit(STATUS_RF_KILL_HW, &priv->status)))
 891                 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
 892                         test_bit(STATUS_RF_KILL_HW, &priv->status));
 893         else
 894                 wake_up_interruptible(&priv->wait_command_queue);
 895 }
 896
 897 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 898 {
 899         if (src == IWL_PWR_SRC_VAUX) {
 900                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
 901                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 902                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 903                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 904         } else {
 905                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 906                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 907                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 908         }
 909
 910         return 0;
 911 }
 912
 913 static void iwl_bg_tx_flush(struct work_struct *work)
 914 {
 915         struct iwl_priv *priv =
 916                 container_of(work, struct iwl_priv, tx_flush);
 917
 918         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 919                 return;
 920
 921         /* do nothing if rf-kill is on */
 922         if (!iwl_is_ready_rf(priv))
 923                 return;
 924
 925         if (priv->cfg->ops->lib->txfifo_flush) {
 926                 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 927                 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 928         }
 929 }
 930
 931 /**
 932  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
 933  *
 934  * Setup the RX handlers for each of the reply types sent from the uCode
 935  * to the host.
 936  *
 937  * This function chains into the hardware specific files for them to setup
 938  * any hardware specific handlers as well.
 939  */
 940 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 941 {
 942         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
 943         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
 944         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
 945         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
 946                         iwl_rx_spectrum_measure_notif;
 947         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
 948         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
 949             iwl_rx_pm_debug_statistics_notif;
 950         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
 951
 952         /*
 953          * The same handler is used for both the REPLY to a discrete
 954          * statistics request from the host as well as for the periodic
 955          * statistics notifications (after received beacons) from the uCode.
 956          */
 957         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
 958         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 959
 960         iwl_setup_rx_scan_handlers(priv);
 961
 962         /* status change handler */
 963         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
 964
 965         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
 966             iwl_rx_missed_beacon_notif;
 967         /* Rx handlers */
 968         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
 969         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
 970         /* block ack */
 971         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
 972         /* Set up hardware specific Rx handlers */
 973         priv->cfg->ops->lib->rx_handler_setup(priv);
 974 }
 975
 976 /**
 977  * iwl_rx_handle - Main entry function for receiving responses from uCode
 978  *
 979  * Uses the priv->rx_handlers callback function array to invoke
 980  * the appropriate handlers, including command responses,
 981  * frame-received notifications, and other notifications.
 982  */
 983 void iwl_rx_handle(struct iwl_priv *priv)
 984 {
 985         struct iwl_rx_mem_buffer *rxb;
 986         struct iwl_rx_packet *pkt;
 987         struct iwl_rx_queue *rxq = &priv->rxq;
 988         u32 r, i;
 989         int reclaim;
 990         unsigned long flags;
 991         u8 fill_rx = 0;
 992         u32 count = 8;
 993         int total_empty;
 994
 995         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 996          * buffer that the driver may process (last buffer filled by ucode). */
 997         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 998         i = rxq->read;
 999
1000         /* Rx interrupt, but nothing sent from uCode */
1001         if (i == r)
1002                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1003
1004         /* calculate total frames need to be restock after handling RX */
1005         total_empty = r - rxq->write_actual;
1006         if (total_empty < 0)
1007                 total_empty += RX_QUEUE_SIZE;
1008
1009         if (total_empty > (RX_QUEUE_SIZE / 2))
1010                 fill_rx = 1;
1011
1012         while (i != r) {
1013                 int len;
1014
1015                 rxb = rxq->queue[i];
1016
1017                 /* If an RXB doesn't have a Rx queue slot associated with it,
1018                  * then a bug has been introduced in the queue refilling
1019                  * routines -- catch it here */
1020                 BUG_ON(rxb == NULL);
1021
1022                 rxq->queue[i] = NULL;
1023
1024                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1025                                PAGE_SIZE << priv->hw_params.rx_page_order,
1026                                PCI_DMA_FROMDEVICE);
1027                 pkt = rxb_addr(rxb);
1028
1029                 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1030                 len += sizeof(u32); /* account for status word */
1031                 trace_iwlwifi_dev_rx(priv, pkt, len);
1032
1033                 /* Reclaim a command buffer only if this packet is a response
1034                  *   to a (driver-originated) command.
1035                  * If the packet (e.g. Rx frame) originated from uCode,
1036                  *   there is no command buffer to reclaim.
1037                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1038                  *   but apparently a few don't get set; catch them here. */
1039                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1040                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1041                         (pkt->hdr.cmd != REPLY_RX) &&
1042                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1043                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1044                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1045                         (pkt->hdr.cmd != REPLY_TX);
1046
1047                 /* Based on type of command response or notification,
1048                  *   handle those that need handling via function in
1049                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1050                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1051                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1052                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1053                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1054                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1055                 } else {
1056                         /* No handling needed */
1057                         IWL_DEBUG_RX(priv,
1058                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1059                                 r, i, get_cmd_string(pkt->hdr.cmd),
1060                                 pkt->hdr.cmd);
1061                 }
1062
1063                 /*
1064                  * XXX: After here, we should always check rxb->page
1065                  * against NULL before touching it or its virtual
1066                  * memory (pkt). Because some rx_handler might have
1067                  * already taken or freed the pages.
1068                  */
1069
1070                 if (reclaim) {
1071                         /* Invoke any callbacks, transfer the buffer to caller,
1072                          * and fire off the (possibly) blocking iwl_send_cmd()
1073                          * as we reclaim the driver command queue */
1074                         if (rxb->page)
1075                                 iwl_tx_cmd_complete(priv, rxb);
1076                         else
1077                                 IWL_WARN(priv, "Claim null rxb?\n");
1078                 }
1079
1080                 /* Reuse the page if possible. For notification packets and
1081                  * SKBs that fail to Rx correctly, add them back into the
1082                  * rx_free list for reuse later. */
1083                 spin_lock_irqsave(&rxq->lock, flags);
1084                 if (rxb->page != NULL) {
1085                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1086                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1087                                 PCI_DMA_FROMDEVICE);
1088                         list_add_tail(&rxb->list, &rxq->rx_free);
1089                         rxq->free_count++;
1090                 } else
1091                         list_add_tail(&rxb->list, &rxq->rx_used);
1092
1093                 spin_unlock_irqrestore(&rxq->lock, flags);
1094
1095                 i = (i + 1) & RX_QUEUE_MASK;
1096                 /* If there are a lot of unused frames,
1097                  * restock the Rx queue so ucode wont assert. */
1098                 if (fill_rx) {
1099                         count++;
1100                         if (count >= 8) {
1101                                 rxq->read = i;
1102                                 iwlagn_rx_replenish_now(priv);
1103                                 count = 0;
1104                         }
1105                 }
1106         }
1107
1108         /* Backtrack one entry */
1109         rxq->read = i;
1110         if (fill_rx)
1111                 iwlagn_rx_replenish_now(priv);
1112         else
1113                 iwlagn_rx_queue_restock(priv);
1114 }
1115
1116 /* call this function to flush any scheduled tasklet */
1117 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1118 {
1119         /* wait to make sure we flush pending tasklet*/
1120         synchronize_irq(priv->pci_dev->irq);
1121         tasklet_kill(&priv->irq_tasklet);
1122 }
1123
1124 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1125 {
1126         u32 inta, handled = 0;
1127         u32 inta_fh;
1128         unsigned long flags;
1129         u32 i;
1130 #ifdef CONFIG_IWLWIFI_DEBUG
1131         u32 inta_mask;
1132 #endif
1133
1134         spin_lock_irqsave(&priv->lock, flags);
1135
1136         /* Ack/clear/reset pending uCode interrupts.
1137          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1138          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1139         inta = iwl_read32(priv, CSR_INT);
1140         iwl_write32(priv, CSR_INT, inta);
1141
1142         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1143          * Any new interrupts that happen after this, either while we're
1144          * in this tasklet, or later, will show up in next ISR/tasklet. */
1145         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1146         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1147
1148 #ifdef CONFIG_IWLWIFI_DEBUG
1149         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1150                 /* just for debug */
1151                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1152                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1153                               inta, inta_mask, inta_fh);
1154         }
1155 #endif
1156
1157         spin_unlock_irqrestore(&priv->lock, flags);
1158
1159         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1160          * atomic, make sure that inta covers all the interrupts that
1161          * we've discovered, even if FH interrupt came in just after
1162          * reading CSR_INT. */
1163         if (inta_fh & CSR49_FH_INT_RX_MASK)
1164                 inta |= CSR_INT_BIT_FH_RX;
1165         if (inta_fh & CSR49_FH_INT_TX_MASK)
1166                 inta |= CSR_INT_BIT_FH_TX;
1167
1168         /* Now service all interrupt bits discovered above. */
1169         if (inta & CSR_INT_BIT_HW_ERR) {
1170                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1171
1172                 /* Tell the device to stop sending interrupts */
1173                 iwl_disable_interrupts(priv);
1174
1175                 priv->isr_stats.hw++;
1176                 iwl_irq_handle_error(priv);
1177
1178                 handled |= CSR_INT_BIT_HW_ERR;
1179
1180                 return;
1181         }
1182
1183 #ifdef CONFIG_IWLWIFI_DEBUG
1184         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1185                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1186                 if (inta & CSR_INT_BIT_SCD) {
1187                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1188                                       "the frame/frames.\n");
1189                         priv->isr_stats.sch++;
1190                 }
1191
1192                 /* Alive notification via Rx interrupt will do the real work */
1193                 if (inta & CSR_INT_BIT_ALIVE) {
1194                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1195                         priv->isr_stats.alive++;
1196                 }
1197         }
1198 #endif
1199         /* Safely ignore these bits for debug checks below */
1200         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1201
1202         /* HW RF KILL switch toggled */
1203         if (inta & CSR_INT_BIT_RF_KILL) {
1204                 int hw_rf_kill = 0;
1205                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1206                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1207                         hw_rf_kill = 1;
1208
1209                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1210                                 hw_rf_kill ? "disable radio" : "enable radio");
1211
1212                 priv->isr_stats.rfkill++;
1213
1214                 /* driver only loads ucode once setting the interface up.
1215                  * the driver allows loading the ucode even if the radio
1216                  * is killed. Hence update the killswitch state here. The
1217                  * rfkill handler will care about restarting if needed.
1218                  */
1219                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1220                         if (hw_rf_kill)
1221                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1222                         else
1223                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1224                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1225                 }
1226
1227                 handled |= CSR_INT_BIT_RF_KILL;
1228         }
1229
1230         /* Chip got too hot and stopped itself */
1231         if (inta & CSR_INT_BIT_CT_KILL) {
1232                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1233                 priv->isr_stats.ctkill++;
1234                 handled |= CSR_INT_BIT_CT_KILL;
1235         }
1236
1237         /* Error detected by uCode */
1238         if (inta & CSR_INT_BIT_SW_ERR) {
1239                 IWL_ERR(priv, "Microcode SW error detected. "
1240                         " Restarting 0x%X.\n", inta);
1241                 priv->isr_stats.sw++;
1242                 priv->isr_stats.sw_err = inta;
1243                 iwl_irq_handle_error(priv);
1244                 handled |= CSR_INT_BIT_SW_ERR;
1245         }
1246
1247         /*
1248          * uCode wakes up after power-down sleep.
1249          * Tell device about any new tx or host commands enqueued,
1250          * and about any Rx buffers made available while asleep.
1251          */
1252         if (inta & CSR_INT_BIT_WAKEUP) {
1253                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1254                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1255                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1256                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1257                 priv->isr_stats.wakeup++;
1258                 handled |= CSR_INT_BIT_WAKEUP;
1259         }
1260
1261         /* All uCode command responses, including Tx command responses,
1262          * Rx "responses" (frame-received notification), and other
1263          * notifications from uCode come through here*/
1264         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1265                 iwl_rx_handle(priv);
1266                 priv->isr_stats.rx++;
1267                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1268         }
1269
1270         /* This "Tx" DMA channel is used only for loading uCode */
1271         if (inta & CSR_INT_BIT_FH_TX) {
1272                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1273                 priv->isr_stats.tx++;
1274                 handled |= CSR_INT_BIT_FH_TX;
1275                 /* Wake up uCode load routine, now that load is complete */
1276                 priv->ucode_write_complete = 1;
1277                 wake_up_interruptible(&priv->wait_command_queue);
1278         }
1279
1280         if (inta & ~handled) {
1281                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1282                 priv->isr_stats.unhandled++;
1283         }
1284
1285         if (inta & ~(priv->inta_mask)) {
1286                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1287                          inta & ~priv->inta_mask);
1288                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1289         }
1290
1291         /* Re-enable all interrupts */
1292         /* only Re-enable if diabled by irq */
1293         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1294                 iwl_enable_interrupts(priv);
1295
1296 #ifdef CONFIG_IWLWIFI_DEBUG
1297         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1298                 inta = iwl_read32(priv, CSR_INT);
1299                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1300                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1301                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1302                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1303         }
1304 #endif
1305 }
1306
1307 /* tasklet for iwlagn interrupt */
1308 static void iwl_irq_tasklet(struct iwl_priv *priv)
1309 {
1310         u32 inta = 0;
1311         u32 handled = 0;
1312         unsigned long flags;
1313         u32 i;
1314 #ifdef CONFIG_IWLWIFI_DEBUG
1315         u32 inta_mask;
1316 #endif
1317
1318         spin_lock_irqsave(&priv->lock, flags);
1319
1320         /* Ack/clear/reset pending uCode interrupts.
1321          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1322          */
1323         /* There is a hardware bug in the interrupt mask function that some
1324          * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1325          * they are disabled in the CSR_INT_MASK register. Furthermore the
1326          * ICT interrupt handling mechanism has another bug that might cause
1327          * these unmasked interrupts fail to be detected. We workaround the
1328          * hardware bugs here by ACKing all the possible interrupts so that
1329          * interrupt coalescing can still be achieved.
1330          */
1331         iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
1332
1333         inta = priv->_agn.inta;
1334
1335 #ifdef CONFIG_IWLWIFI_DEBUG
1336         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1337                 /* just for debug */
1338                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1339                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1340                                 inta, inta_mask);
1341         }
1342 #endif
1343
1344         spin_unlock_irqrestore(&priv->lock, flags);
1345
1346         /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1347         priv->_agn.inta = 0;
1348
1349         /* Now service all interrupt bits discovered above. */
1350         if (inta & CSR_INT_BIT_HW_ERR) {
1351                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1352
1353                 /* Tell the device to stop sending interrupts */
1354                 iwl_disable_interrupts(priv);
1355
1356                 priv->isr_stats.hw++;
1357                 iwl_irq_handle_error(priv);
1358
1359                 handled |= CSR_INT_BIT_HW_ERR;
1360
1361                 return;
1362         }
1363
1364 #ifdef CONFIG_IWLWIFI_DEBUG
1365         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1366                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1367                 if (inta & CSR_INT_BIT_SCD) {
1368                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1369                                       "the frame/frames.\n");
1370                         priv->isr_stats.sch++;
1371                 }
1372
1373                 /* Alive notification via Rx interrupt will do the real work */
1374                 if (inta & CSR_INT_BIT_ALIVE) {
1375                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1376                         priv->isr_stats.alive++;
1377                 }
1378         }
1379 #endif
1380         /* Safely ignore these bits for debug checks below */
1381         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1382
1383         /* HW RF KILL switch toggled */
1384         if (inta & CSR_INT_BIT_RF_KILL) {
1385                 int hw_rf_kill = 0;
1386                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1387                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1388                         hw_rf_kill = 1;
1389
1390                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1391                                 hw_rf_kill ? "disable radio" : "enable radio");
1392
1393                 priv->isr_stats.rfkill++;
1394
1395                 /* driver only loads ucode once setting the interface up.
1396                  * the driver allows loading the ucode even if the radio
1397                  * is killed. Hence update the killswitch state here. The
1398                  * rfkill handler will care about restarting if needed.
1399                  */
1400                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1401                         if (hw_rf_kill)
1402                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1403                         else
1404                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1405                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1406                 }
1407
1408                 handled |= CSR_INT_BIT_RF_KILL;
1409         }
1410
1411         /* Chip got too hot and stopped itself */
1412         if (inta & CSR_INT_BIT_CT_KILL) {
1413                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1414                 priv->isr_stats.ctkill++;
1415                 handled |= CSR_INT_BIT_CT_KILL;
1416         }
1417
1418         /* Error detected by uCode */
1419         if (inta & CSR_INT_BIT_SW_ERR) {
1420                 IWL_ERR(priv, "Microcode SW error detected. "
1421                         " Restarting 0x%X.\n", inta);
1422                 priv->isr_stats.sw++;
1423                 priv->isr_stats.sw_err = inta;
1424                 iwl_irq_handle_error(priv);
1425                 handled |= CSR_INT_BIT_SW_ERR;
1426         }
1427
1428         /* uCode wakes up after power-down sleep */
1429         if (inta & CSR_INT_BIT_WAKEUP) {
1430                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1431                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1432                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1433                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1434
1435                 priv->isr_stats.wakeup++;
1436
1437                 handled |= CSR_INT_BIT_WAKEUP;
1438         }
1439
1440         /* All uCode command responses, including Tx command responses,
1441          * Rx "responses" (frame-received notification), and other
1442          * notifications from uCode come through here*/
1443         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1444                         CSR_INT_BIT_RX_PERIODIC)) {
1445                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1446                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1447                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1448                         iwl_write32(priv, CSR_FH_INT_STATUS,
1449                                         CSR49_FH_INT_RX_MASK);
1450                 }
1451                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1452                         handled |= CSR_INT_BIT_RX_PERIODIC;
1453                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1454                 }
1455                 /* Sending RX interrupt require many steps to be done in the
1456                  * the device:
1457                  * 1- write interrupt to current index in ICT table.
1458                  * 2- dma RX frame.
1459                  * 3- update RX shared data to indicate last write index.
1460                  * 4- send interrupt.
1461                  * This could lead to RX race, driver could receive RX interrupt
1462                  * but the shared data changes does not reflect this;
1463                  * periodic interrupt will detect any dangling Rx activity.
1464                  */
1465
1466                 /* Disable periodic interrupt; we use it as just a one-shot. */
1467                 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1468                             CSR_INT_PERIODIC_DIS);
1469                 iwl_rx_handle(priv);
1470
1471                 /*
1472                  * Enable periodic interrupt in 8 msec only if we received
1473                  * real RX interrupt (instead of just periodic int), to catch
1474                  * any dangling Rx interrupt.  If it was just the periodic
1475                  * interrupt, there was no dangling Rx activity, and no need
1476                  * to extend the periodic interrupt; one-shot is enough.
1477                  */
1478                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1479                         iwl_write8(priv, CSR_INT_PERIODIC_REG,
1480                                     CSR_INT_PERIODIC_ENA);
1481
1482                 priv->isr_stats.rx++;
1483         }
1484
1485         /* This "Tx" DMA channel is used only for loading uCode */
1486         if (inta & CSR_INT_BIT_FH_TX) {
1487                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1488                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1489                 priv->isr_stats.tx++;
1490                 handled |= CSR_INT_BIT_FH_TX;
1491                 /* Wake up uCode load routine, now that load is complete */
1492                 priv->ucode_write_complete = 1;
1493                 wake_up_interruptible(&priv->wait_command_queue);
1494         }
1495
1496         if (inta & ~handled) {
1497                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1498                 priv->isr_stats.unhandled++;
1499         }
1500
1501         if (inta & ~(priv->inta_mask)) {
1502                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1503                          inta & ~priv->inta_mask);
1504         }
1505
1506         /* Re-enable all interrupts */
1507         /* only Re-enable if diabled by irq */
1508         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1509                 iwl_enable_interrupts(priv);
1510 }
1511
1512 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1513 #define ACK_CNT_RATIO (50)
1514 #define BA_TIMEOUT_CNT (5)
1515 #define BA_TIMEOUT_MAX (16)
1516
1517 /**
1518  * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1519  *
1520  * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1521  * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1522  * operation state.
1523  */
1524 bool iwl_good_ack_health(struct iwl_priv *priv,
1525                                 struct iwl_rx_packet *pkt)
1526 {
1527         bool rc = true;
1528         int actual_ack_cnt_delta, expected_ack_cnt_delta;
1529         int ba_timeout_delta;
1530
1531         actual_ack_cnt_delta =
1532                 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1533                 le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1534         expected_ack_cnt_delta =
1535                 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1536                 le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1537         ba_timeout_delta =
1538                 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1539                 le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1540         if ((priv->_agn.agg_tids_count > 0) &&
1541             (expected_ack_cnt_delta > 0) &&
1542             (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1543                 < ACK_CNT_RATIO) &&
1544             (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1545                 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1546                                 " expected_ack_cnt = %d\n",
1547                                 actual_ack_cnt_delta, expected_ack_cnt_delta);
1548
1549 #ifdef CONFIG_IWLWIFI_DEBUGFS
1550                 /*
1551                  * This is ifdef'ed on DEBUGFS because otherwise the
1552                  * statistics aren't available. If DEBUGFS is set but
1553                  * DEBUG is not, these will just compile out.
1554                  */
1555                 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1556                                 priv->_agn.delta_statistics.tx.rx_detected_cnt);
1557                 IWL_DEBUG_RADIO(priv,
1558                                 "ack_or_ba_timeout_collision delta = %d\n",
1559                                 priv->_agn.delta_statistics.tx.
1560                                 ack_or_ba_timeout_collision);
1561 #endif
1562                 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1563                                 ba_timeout_delta);
1564                 if (!actual_ack_cnt_delta &&
1565                     (ba_timeout_delta >= BA_TIMEOUT_MAX))
1566                         rc = false;
1567         }
1568         return rc;
1569 }
1570
1571
1572 /*****************************************************************************
1573  *
1574  * sysfs attributes
1575  *
1576  *****************************************************************************/
1577
1578 #ifdef CONFIG_IWLWIFI_DEBUG
1579
1580 /*
1581  * The following adds a new attribute to the sysfs representation
1582  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
1583  * used for controlling the debug level.
1584  *
1585  * See the level definitions in iwl for details.
1586  *
1587  * The debug_level being managed using sysfs below is a per device debug
1588  * level that is used instead of the global debug level if it (the per
1589  * device debug level) is set.
1590  */
1591 static ssize_t show_debug_level(struct device *d,
1592                                 struct device_attribute *attr, char *buf)
1593 {
1594         struct iwl_priv *priv = dev_get_drvdata(d);
1595         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1596 }
1597 static ssize_t store_debug_level(struct device *d,
1598                                 struct device_attribute *attr,
1599                                  const char *buf, size_t count)
1600 {
1601         struct iwl_priv *priv = dev_get_drvdata(d);
1602         unsigned long val;
1603         int ret;
1604
1605         ret = strict_strtoul(buf, 0, &val);
1606         if (ret)
1607                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1608         else {
1609                 priv->debug_level = val;
1610                 if (iwl_alloc_traffic_mem(priv))
1611                         IWL_ERR(priv,
1612                                 "Not enough memory to generate traffic log\n");
1613         }
1614         return strnlen(buf, count);
1615 }
1616
1617 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1618                         show_debug_level, store_debug_level);
1619
1620
1621 #endif /* CONFIG_IWLWIFI_DEBUG */
1622
1623
1624 static ssize_t show_temperature(struct device *d,
1625                                 struct device_attribute *attr, char *buf)
1626 {
1627         struct iwl_priv *priv = dev_get_drvdata(d);
1628
1629         if (!iwl_is_alive(priv))
1630                 return -EAGAIN;
1631
1632         return sprintf(buf, "%d\n", priv->temperature);
1633 }
1634
1635 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1636
1637 static ssize_t show_tx_power(struct device *d,
1638                              struct device_attribute *attr, char *buf)
1639 {
1640         struct iwl_priv *priv = dev_get_drvdata(d);
1641
1642         if (!iwl_is_ready_rf(priv))
1643                 return sprintf(buf, "off\n");
1644         else
1645                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1646 }
1647
1648 static ssize_t store_tx_power(struct device *d,
1649                               struct device_attribute *attr,
1650                               const char *buf, size_t count)
1651 {
1652         struct iwl_priv *priv = dev_get_drvdata(d);
1653         unsigned long val;
1654         int ret;
1655
1656         ret = strict_strtoul(buf, 10, &val);
1657         if (ret)
1658                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1659         else {
1660                 ret = iwl_set_tx_power(priv, val, false);
1661                 if (ret)
1662                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1663                                 ret);
1664                 else
1665                         ret = count;
1666         }
1667         return ret;
1668 }
1669
1670 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1671
1672 static struct attribute *iwl_sysfs_entries[] = {
1673         &dev_attr_temperature.attr,
1674         &dev_attr_tx_power.attr,
1675 #ifdef CONFIG_IWLWIFI_DEBUG
1676         &dev_attr_debug_level.attr,
1677 #endif
1678         NULL
1679 };
1680
1681 static struct attribute_group iwl_attribute_group = {
1682         .name = NULL,           /* put in device directory */
1683         .attrs = iwl_sysfs_entries,
1684 };
1685
1686 /******************************************************************************
1687  *
1688  * uCode download functions
1689  *
1690  ******************************************************************************/
1691
1692 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1693 {
1694         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1695         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1696         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1697         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1698         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1699         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1700 }
1701
1702 static void iwl_nic_start(struct iwl_priv *priv)
1703 {
1704         /* Remove all resets to allow NIC to operate */
1705         iwl_write32(priv, CSR_RESET, 0);
1706 }
1707
1708 struct iwlagn_ucode_capabilities {
1709         u32 max_probe_length;
1710         u32 standard_phy_calibration_size;
1711 };
1712
1713 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1714 static int iwl_mac_setup_register(struct iwl_priv *priv,
1715                                   struct iwlagn_ucode_capabilities *capa);
1716
1717 #define UCODE_EXPERIMENTAL_INDEX        100
1718 #define UCODE_EXPERIMENTAL_TAG          "exp"
1719
1720 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1721 {
1722         const char *name_pre = priv->cfg->fw_name_pre;
1723         char tag[8];
1724
1725         if (first) {
1726 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1727                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1728                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1729         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1730 #endif
1731                 priv->fw_index = priv->cfg->ucode_api_max;
1732                 sprintf(tag, "%d", priv->fw_index);
1733         } else {
1734                 priv->fw_index--;
1735                 sprintf(tag, "%d", priv->fw_index);
1736         }
1737
1738         if (priv->fw_index < priv->cfg->ucode_api_min) {
1739                 IWL_ERR(priv, "no suitable firmware found!\n");
1740                 return -ENOENT;
1741         }
1742
1743         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1744
1745         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1746                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1747                                 ? "EXPERIMENTAL " : "",
1748                        priv->firmware_name);
1749
1750         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1751                                        &priv->pci_dev->dev, GFP_KERNEL, priv,
1752                                        iwl_ucode_callback);
1753 }
1754
1755 struct iwlagn_firmware_pieces {
1756         const void *inst, *data, *init, *init_data, *boot;
1757         size_t inst_size, data_size, init_size, init_data_size, boot_size;
1758
1759         u32 build;
1760
1761         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1762         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1763 };
1764
1765 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1766                                        const struct firmware *ucode_raw,
1767                                        struct iwlagn_firmware_pieces *pieces)
1768 {
1769         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1770         u32 api_ver, hdr_size;
1771         const u8 *src;
1772
1773         priv->ucode_ver = le32_to_cpu(ucode->ver);
1774         api_ver = IWL_UCODE_API(priv->ucode_ver);
1775
1776         switch (api_ver) {
1777         default:
1778                 /*
1779                  * 4965 doesn't revision the firmware file format
1780                  * along with the API version, it always uses v1
1781                  * file format.
1782                  */
1783                 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
1784                                 CSR_HW_REV_TYPE_4965) {
1785                         hdr_size = 28;
1786                         if (ucode_raw->size < hdr_size) {
1787                                 IWL_ERR(priv, "File size too small!\n");
1788                                 return -EINVAL;
1789                         }
1790                         pieces->build = le32_to_cpu(ucode->u.v2.build);
1791                         pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1792                         pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1793                         pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1794                         pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1795                         pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
1796                         src = ucode->u.v2.data;
1797                         break;
1798                 }
1799                 /* fall through for 4965 */
1800         case 0:
1801         case 1:
1802         case 2:
1803                 hdr_size = 24;
1804                 if (ucode_raw->size < hdr_size) {
1805                         IWL_ERR(priv, "File size too small!\n");
1806                         return -EINVAL;
1807                 }
1808                 pieces->build = 0;
1809                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1810                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1811                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1812                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1813                 pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
1814                 src = ucode->u.v1.data;
1815                 break;
1816         }
1817
1818         /* Verify size of file vs. image size info in file's header */
1819         if (ucode_raw->size != hdr_size + pieces->inst_size +
1820                                 pieces->data_size + pieces->init_size +
1821                                 pieces->init_data_size + pieces->boot_size) {
1822
1823                 IWL_ERR(priv,
1824                         "uCode file size %d does not match expected size\n",
1825                         (int)ucode_raw->size);
1826                 return -EINVAL;
1827         }
1828
1829         pieces->inst = src;
1830         src += pieces->inst_size;
1831         pieces->data = src;
1832         src += pieces->data_size;
1833         pieces->init = src;
1834         src += pieces->init_size;
1835         pieces->init_data = src;
1836         src += pieces->init_data_size;
1837         pieces->boot = src;
1838         src += pieces->boot_size;
1839
1840         return 0;
1841 }
1842
1843 static int iwlagn_wanted_ucode_alternative = 1;
1844
1845 static int iwlagn_load_firmware(struct iwl_priv *priv,
1846                                 const struct firmware *ucode_raw,
1847                                 struct iwlagn_firmware_pieces *pieces,
1848                                 struct iwlagn_ucode_capabilities *capa)
1849 {
1850         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1851         struct iwl_ucode_tlv *tlv;
1852         size_t len = ucode_raw->size;
1853         const u8 *data;
1854         int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1855         u64 alternatives;
1856         u32 tlv_len;
1857         enum iwl_ucode_tlv_type tlv_type;
1858         const u8 *tlv_data;
1859
1860         if (len < sizeof(*ucode)) {
1861                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1862                 return -EINVAL;
1863         }
1864
1865         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1866                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1867                         le32_to_cpu(ucode->magic));
1868                 return -EINVAL;
1869         }
1870
1871         /*
1872          * Check which alternatives are present, and "downgrade"
1873          * when the chosen alternative is not present, warning
1874          * the user when that happens. Some files may not have
1875          * any alternatives, so don't warn in that case.
1876          */
1877         alternatives = le64_to_cpu(ucode->alternatives);
1878         tmp = wanted_alternative;
1879         if (wanted_alternative > 63)
1880                 wanted_alternative = 63;
1881         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1882                 wanted_alternative--;
1883         if (wanted_alternative && wanted_alternative != tmp)
1884                 IWL_WARN(priv,
1885                          "uCode alternative %d not available, choosing %d\n",
1886                          tmp, wanted_alternative);
1887
1888         priv->ucode_ver = le32_to_cpu(ucode->ver);
1889         pieces->build = le32_to_cpu(ucode->build);
1890         data = ucode->data;
1891
1892         len -= sizeof(*ucode);
1893
1894         while (len >= sizeof(*tlv)) {
1895                 u16 tlv_alt;
1896
1897                 len -= sizeof(*tlv);
1898                 tlv = (void *)data;
1899
1900                 tlv_len = le32_to_cpu(tlv->length);
1901                 tlv_type = le16_to_cpu(tlv->type);
1902                 tlv_alt = le16_to_cpu(tlv->alternative);
1903                 tlv_data = tlv->data;
1904
1905                 if (len < tlv_len) {
1906                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1907                                 len, tlv_len);
1908                         return -EINVAL;
1909                 }
1910                 len -= ALIGN(tlv_len, 4);
1911                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1912
1913                 /*
1914                  * Alternative 0 is always valid.
1915                  *
1916                  * Skip alternative TLVs that are not selected.
1917                  */
1918                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1919                         continue;
1920
1921                 switch (tlv_type) {
1922                 case IWL_UCODE_TLV_INST:
1923                         pieces->inst = tlv_data;
1924                         pieces->inst_size = tlv_len;
1925                         break;
1926                 case IWL_UCODE_TLV_DATA:
1927                         pieces->data = tlv_data;
1928                         pieces->data_size = tlv_len;
1929                         break;
1930                 case IWL_UCODE_TLV_INIT:
1931                         pieces->init = tlv_data;
1932                         pieces->init_size = tlv_len;
1933                         break;
1934                 case IWL_UCODE_TLV_INIT_DATA:
1935                         pieces->init_data = tlv_data;
1936                         pieces->init_data_size = tlv_len;
1937                         break;
1938                 case IWL_UCODE_TLV_BOOT:
1939                         pieces->boot = tlv_data;
1940                         pieces->boot_size = tlv_len;
1941                         break;
1942                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1943                         if (tlv_len != sizeof(u32))
1944                                 goto invalid_tlv_len;
1945                         capa->max_probe_length =
1946                                         le32_to_cpup((__le32 *)tlv_data);
1947                         break;
1948                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1949                         if (tlv_len != sizeof(u32))
1950                                 goto invalid_tlv_len;
1951                         pieces->init_evtlog_ptr =
1952                                         le32_to_cpup((__le32 *)tlv_data);
1953                         break;
1954                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1955                         if (tlv_len != sizeof(u32))
1956                                 goto invalid_tlv_len;
1957                         pieces->init_evtlog_size =
1958                                         le32_to_cpup((__le32 *)tlv_data);
1959                         break;
1960                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1961                         if (tlv_len != sizeof(u32))
1962                                 goto invalid_tlv_len;
1963                         pieces->init_errlog_ptr =
1964                                         le32_to_cpup((__le32 *)tlv_data);
1965                         break;
1966                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1967                         if (tlv_len != sizeof(u32))
1968                                 goto invalid_tlv_len;
1969                         pieces->inst_evtlog_ptr =
1970                                         le32_to_cpup((__le32 *)tlv_data);
1971                         break;
1972                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
1973                         if (tlv_len != sizeof(u32))
1974                                 goto invalid_tlv_len;
1975                         pieces->inst_evtlog_size =
1976                                         le32_to_cpup((__le32 *)tlv_data);
1977                         break;
1978                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
1979                         if (tlv_len != sizeof(u32))
1980                                 goto invalid_tlv_len;
1981                         pieces->inst_errlog_ptr =
1982                                         le32_to_cpup((__le32 *)tlv_data);
1983                         break;
1984                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
1985                         if (tlv_len)
1986                                 goto invalid_tlv_len;
1987                         priv->enhance_sensitivity_table = true;
1988                         break;
1989                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
1990                         if (tlv_len != sizeof(u32))
1991                                 goto invalid_tlv_len;
1992                         capa->standard_phy_calibration_size =
1993                                         le32_to_cpup((__le32 *)tlv_data);
1994                         break;
1995                 default:
1996                         IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
1997                         break;
1998                 }
1999         }
2000
2001         if (len) {
2002                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
2003                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
2004                 return -EINVAL;
2005         }
2006
2007         return 0;
2008
2009  invalid_tlv_len:
2010         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
2011         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
2012
2013         return -EINVAL;
2014 }
2015
2016 /**
2017  * iwl_ucode_callback - callback when firmware was loaded
2018  *
2019  * If loaded successfully, copies the firmware into buffers
2020  * for the card to fetch (via DMA).
2021  */
2022 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
2023 {
2024         struct iwl_priv *priv = context;
2025         struct iwl_ucode_header *ucode;
2026         int err;
2027         struct iwlagn_firmware_pieces pieces;
2028         const unsigned int api_max = priv->cfg->ucode_api_max;
2029         const unsigned int api_min = priv->cfg->ucode_api_min;
2030         u32 api_ver;
2031         char buildstr[25];
2032         u32 build;
2033         struct iwlagn_ucode_capabilities ucode_capa = {
2034                 .max_probe_length = 200,
2035                 .standard_phy_calibration_size =
2036                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE,
2037         };
2038
2039         memset(&pieces, 0, sizeof(pieces));
2040
2041         if (!ucode_raw) {
2042                 if (priv->fw_index <= priv->cfg->ucode_api_max)
2043                         IWL_ERR(priv,
2044                                 "request for firmware file '%s' failed.\n",
2045                                 priv->firmware_name);
2046                 goto try_again;
2047         }
2048
2049         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
2050                        priv->firmware_name, ucode_raw->size);
2051
2052         /* Make sure that we got at least the API version number */
2053         if (ucode_raw->size < 4) {
2054                 IWL_ERR(priv, "File size way too small!\n");
2055                 goto try_again;
2056         }
2057
2058         /* Data from ucode file:  header followed by uCode images */
2059         ucode = (struct iwl_ucode_header *)ucode_raw->data;
2060
2061         if (ucode->ver)
2062                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
2063         else
2064                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
2065                                            &ucode_capa);
2066
2067         if (err)
2068                 goto try_again;
2069
2070         api_ver = IWL_UCODE_API(priv->ucode_ver);
2071         build = pieces.build;
2072
2073         /*
2074          * api_ver should match the api version forming part of the
2075          * firmware filename ... but we don't check for that and only rely
2076          * on the API version read from firmware header from here on forward
2077          */
2078         if (api_ver < api_min || api_ver > api_max) {
2079                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2080                           "Driver supports v%u, firmware is v%u.\n",
2081                           api_max, api_ver);
2082                 goto try_again;
2083         }
2084
2085         if (api_ver != api_max)
2086                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
2087                           "got v%u. New firmware can be obtained "
2088                           "from http://www.intellinuxwireless.org.\n",
2089                           api_max, api_ver);
2090
2091         if (build)
2092                 sprintf(buildstr, " build %u%s", build,
2093                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
2094                                 ? " (EXP)" : "");
2095         else
2096                 buildstr[0] = '\0';
2097
2098         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
2099                  IWL_UCODE_MAJOR(priv->ucode_ver),
2100                  IWL_UCODE_MINOR(priv->ucode_ver),
2101                  IWL_UCODE_API(priv->ucode_ver),
2102                  IWL_UCODE_SERIAL(priv->ucode_ver),
2103                  buildstr);
2104
2105         snprintf(priv->hw->wiphy->fw_version,
2106                  sizeof(priv->hw->wiphy->fw_version),
2107                  "%u.%u.%u.%u%s",
2108                  IWL_UCODE_MAJOR(priv->ucode_ver),
2109                  IWL_UCODE_MINOR(priv->ucode_ver),
2110                  IWL_UCODE_API(priv->ucode_ver),
2111                  IWL_UCODE_SERIAL(priv->ucode_ver),
2112                  buildstr);
2113
2114         /*
2115          * For any of the failures below (before allocating pci memory)
2116          * we will try to load a version with a smaller API -- maybe the
2117          * user just got a corrupted version of the latest API.
2118          */
2119
2120         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2121                        priv->ucode_ver);
2122         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
2123                        pieces.inst_size);
2124         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
2125                        pieces.data_size);
2126         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
2127                        pieces.init_size);
2128         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
2129                        pieces.init_data_size);
2130         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
2131                        pieces.boot_size);
2132
2133         /* Verify that uCode images will fit in card's SRAM */
2134         if (pieces.inst_size > priv->hw_params.max_inst_size) {
2135                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
2136                         pieces.inst_size);
2137                 goto try_again;
2138         }
2139
2140         if (pieces.data_size > priv->hw_params.max_data_size) {
2141                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
2142                         pieces.data_size);
2143                 goto try_again;
2144         }
2145
2146         if (pieces.init_size > priv->hw_params.max_inst_size) {
2147                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
2148                         pieces.init_size);
2149                 goto try_again;
2150         }
2151
2152         if (pieces.init_data_size > priv->hw_params.max_data_size) {
2153                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
2154                         pieces.init_data_size);
2155                 goto try_again;
2156         }
2157
2158         if (pieces.boot_size > priv->hw_params.max_bsm_size) {
2159                 IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
2160                         pieces.boot_size);
2161                 goto try_again;
2162         }
2163
2164         /* Allocate ucode buffers for card's bus-master loading ... */
2165
2166         /* Runtime instructions and 2 copies of data:
2167          * 1) unmodified from disk
2168          * 2) backup cache for save/restore during power-downs */
2169         priv->ucode_code.len = pieces.inst_size;
2170         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2171
2172         priv->ucode_data.len = pieces.data_size;
2173         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2174
2175         priv->ucode_data_backup.len = pieces.data_size;
2176         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2177
2178         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2179             !priv->ucode_data_backup.v_addr)
2180                 goto err_pci_alloc;
2181
2182         /* Initialization instructions and data */
2183         if (pieces.init_size && pieces.init_data_size) {
2184                 priv->ucode_init.len = pieces.init_size;
2185                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2186
2187                 priv->ucode_init_data.len = pieces.init_data_size;
2188                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2189
2190                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2191                         goto err_pci_alloc;
2192         }
2193
2194         /* Bootstrap (instructions only, no data) */
2195         if (pieces.boot_size) {
2196                 priv->ucode_boot.len = pieces.boot_size;
2197                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2198
2199                 if (!priv->ucode_boot.v_addr)
2200                         goto err_pci_alloc;
2201         }
2202
2203         /* Now that we can no longer fail, copy information */
2204
2205         /*
2206          * The (size - 16) / 12 formula is based on the information recorded
2207          * for each event, which is of mode 1 (including timestamp) for all
2208          * new microcodes that include this information.
2209          */
2210         priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
2211         if (pieces.init_evtlog_size)
2212                 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
2213         else
2214                 priv->_agn.init_evtlog_size = priv->cfg->max_event_log_size;
2215         priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
2216         priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
2217         if (pieces.inst_evtlog_size)
2218                 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
2219         else
2220                 priv->_agn.inst_evtlog_size = priv->cfg->max_event_log_size;
2221         priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
2222
2223         /* Copy images into buffers for card's bus-master reads ... */
2224
2225         /* Runtime instructions (first block of data in file) */
2226         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
2227                         pieces.inst_size);
2228         memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
2229
2230         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2231                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2232
2233         /*
2234          * Runtime data
2235          * NOTE:  Copy into backup buffer will be done in iwl_up()
2236          */
2237         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
2238                         pieces.data_size);
2239         memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
2240         memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);
2241
2242         /* Initialization instructions */
2243         if (pieces.init_size) {
2244                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2245                                 pieces.init_size);
2246                 memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
2247         }
2248
2249         /* Initialization data */
2250         if (pieces.init_data_size) {
2251                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2252                                pieces.init_data_size);
2253                 memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
2254                        pieces.init_data_size);
2255         }
2256
2257         /* Bootstrap instructions */
2258         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
2259                         pieces.boot_size);
2260         memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
2261
2262         /*
2263          * figure out the offset of chain noise reset and gain commands
2264          * base on the size of standard phy calibration commands table size
2265          */
2266         if (ucode_capa.standard_phy_calibration_size >
2267             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
2268                 ucode_capa.standard_phy_calibration_size =
2269                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
2270
2271         priv->_agn.phy_calib_chain_noise_reset_cmd =
2272                 ucode_capa.standard_phy_calibration_size;
2273         priv->_agn.phy_calib_chain_noise_gain_cmd =
2274                 ucode_capa.standard_phy_calibration_size + 1;
2275
2276         /**************************************************
2277          * This is still part of probe() in a sense...
2278          *
2279          * 9. Setup and register with mac80211 and debugfs
2280          **************************************************/
2281         err = iwl_mac_setup_register(priv, &ucode_capa);
2282         if (err)
2283                 goto out_unbind;
2284
2285         err = iwl_dbgfs_register(priv, DRV_NAME);
2286         if (err)
2287                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2288
2289         err = sysfs_create_group(&priv->pci_dev->dev.kobj,
2290                                         &iwl_attribute_group);
2291         if (err) {
2292                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2293                 goto out_unbind;
2294         }
2295
2296         /* We have our copies now, allow OS release its copies */
2297         release_firmware(ucode_raw);
2298         complete(&priv->_agn.firmware_loading_complete);
2299         return;
2300
2301  try_again:
2302         /* try next, if any */
2303         if (iwl_request_firmware(priv, false))
2304                 goto out_unbind;
2305         release_firmware(ucode_raw);
2306         return;
2307
2308  err_pci_alloc:
2309         IWL_ERR(priv, "failed to allocate pci memory\n");
2310         iwl_dealloc_ucode_pci(priv);
2311  out_unbind:
2312         complete(&priv->_agn.firmware_loading_complete);
2313         device_release_driver(&priv->pci_dev->dev);
2314         release_firmware(ucode_raw);
2315 }
2316
2317 static const char *desc_lookup_text[] = {
2318         "OK",
2319         "FAIL",
2320         "BAD_PARAM",
2321         "BAD_CHECKSUM",
2322         "NMI_INTERRUPT_WDG",
2323         "SYSASSERT",
2324         "FATAL_ERROR",
2325         "BAD_COMMAND",
2326         "HW_ERROR_TUNE_LOCK",
2327         "HW_ERROR_TEMPERATURE",
2328         "ILLEGAL_CHAN_FREQ",
2329         "VCC_NOT_STABLE",
2330         "FH_ERROR",
2331         "NMI_INTERRUPT_HOST",
2332         "NMI_INTERRUPT_ACTION_PT",
2333         "NMI_INTERRUPT_UNKNOWN",
2334         "UCODE_VERSION_MISMATCH",
2335         "HW_ERROR_ABS_LOCK",
2336         "HW_ERROR_CAL_LOCK_FAIL",
2337         "NMI_INTERRUPT_INST_ACTION_PT",
2338         "NMI_INTERRUPT_DATA_ACTION_PT",
2339         "NMI_TRM_HW_ER",
2340         "NMI_INTERRUPT_TRM",
2341         "NMI_INTERRUPT_BREAK_POINT"
2342         "DEBUG_0",
2343         "DEBUG_1",
2344         "DEBUG_2",
2345         "DEBUG_3",
2346 };
2347
2348 static struct { char *name; u8 num; } advanced_lookup[] = {
2349         { "NMI_INTERRUPT_WDG", 0x34 },
2350         { "SYSASSERT", 0x35 },
2351         { "UCODE_VERSION_MISMATCH", 0x37 },
2352         { "BAD_COMMAND", 0x38 },
2353         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
2354         { "FATAL_ERROR", 0x3D },
2355         { "NMI_TRM_HW_ERR", 0x46 },
2356         { "NMI_INTERRUPT_TRM", 0x4C },
2357         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
2358         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
2359         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
2360         { "NMI_INTERRUPT_HOST", 0x66 },
2361         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
2362         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
2363         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
2364         { "ADVANCED_SYSASSERT", 0 },
2365 };
2366
2367 static const char *desc_lookup(u32 num)
2368 {
2369         int i;
2370         int max = ARRAY_SIZE(desc_lookup_text);
2371
2372         if (num < max)
2373                 return desc_lookup_text[num];
2374
2375         max = ARRAY_SIZE(advanced_lookup) - 1;
2376         for (i = 0; i < max; i++) {
2377                 if (advanced_lookup[i].num == num)
2378                         break;;
2379         }
2380         return advanced_lookup[i].name;
2381 }
2382
2383 #define ERROR_START_OFFSET  (1 * sizeof(u32))
2384 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
2385
2386 void iwl_dump_nic_error_log(struct iwl_priv *priv)
2387 {
2388         u32 data2, line;
2389         u32 desc, time, count, base, data1;
2390         u32 blink1, blink2, ilink1, ilink2;
2391         u32 pc, hcmd;
2392
2393         if (priv->ucode_type == UCODE_INIT) {
2394                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2395                 if (!base)
2396                         base = priv->_agn.init_errlog_ptr;
2397         } else {
2398                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2399                 if (!base)
2400                         base = priv->_agn.inst_errlog_ptr;
2401         }
2402
2403         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2404                 IWL_ERR(priv,
2405                         "Not valid error log pointer 0x%08X for %s uCode\n",
2406                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2407                 return;
2408         }
2409
2410         count = iwl_read_targ_mem(priv, base);
2411
2412         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2413                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2414                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2415                         priv->status, count);
2416         }
2417
2418         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2419         pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2420         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2421         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2422         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2423         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2424         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2425         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2426         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2427         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2428         hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2429
2430         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
2431                                       blink1, blink2, ilink1, ilink2);
2432
2433         IWL_ERR(priv, "Desc                                  Time       "
2434                 "data1      data2      line\n");
2435         IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2436                 desc_lookup(desc), desc, time, data1, data2, line);
2437         IWL_ERR(priv, "pc      blink1  blink2  ilink1  ilink2  hcmd\n");
2438         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2439                 pc, blink1, blink2, ilink1, ilink2, hcmd);
2440 }
2441
2442 #define EVENT_START_OFFSET  (4 * sizeof(u32))
2443
2444 /**
2445  * iwl_print_event_log - Dump error event log to syslog
2446  *
2447  */
2448 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
2449                                u32 num_events, u32 mode,
2450                                int pos, char **buf, size_t bufsz)
2451 {
2452         u32 i;
2453         u32 base;       /* SRAM byte address of event log header */
2454         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2455         u32 ptr;        /* SRAM byte address of log data */
2456         u32 ev, time, data; /* event log data */
2457         unsigned long reg_flags;
2458
2459         if (num_events == 0)
2460                 return pos;
2461
2462         if (priv->ucode_type == UCODE_INIT) {
2463                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2464                 if (!base)
2465                         base = priv->_agn.init_evtlog_ptr;
2466         } else {
2467                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2468                 if (!base)
2469                         base = priv->_agn.inst_evtlog_ptr;
2470         }
2471
2472         if (mode == 0)
2473                 event_size = 2 * sizeof(u32);
2474         else
2475                 event_size = 3 * sizeof(u32);
2476
2477         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2478
2479         /* Make sure device is powered up for SRAM reads */
2480         spin_lock_irqsave(&priv->reg_lock, reg_flags);
2481         iwl_grab_nic_access(priv);
2482
2483         /* Set starting address; reads will auto-increment */
2484         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
2485         rmb();
2486
2487         /* "time" is actually "data" for mode 0 (no timestamp).
2488         * place event id # at far right for easier visual parsing. */
2489         for (i = 0; i < num_events; i++) {
2490                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2491                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2492                 if (mode == 0) {
2493                         /* data, ev */
2494                         if (bufsz) {
2495                                 pos += scnprintf(*buf + pos, bufsz - pos,
2496                                                 "EVT_LOG:0x%08x:%04u\n",
2497                                                 time, ev);
2498                         } else {
2499                                 trace_iwlwifi_dev_ucode_event(priv, 0,
2500                                         time, ev);
2501                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2502                                         time, ev);
2503                         }
2504                 } else {
2505                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2506                         if (bufsz) {
2507                                 pos += scnprintf(*buf + pos, bufsz - pos,
2508                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
2509                                                  time, data, ev);
2510                         } else {
2511                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2512                                         time, data, ev);
2513                                 trace_iwlwifi_dev_ucode_event(priv, time,
2514                                         data, ev);
2515                         }
2516                 }
2517         }
2518
2519         /* Allow device to power down */
2520         iwl_release_nic_access(priv);
2521         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
2522         return pos;
2523 }
2524
2525 /**
2526  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2527  */
2528 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2529                                     u32 num_wraps, u32 next_entry,
2530                                     u32 size, u32 mode,
2531                                     int pos, char **buf, size_t bufsz)
2532 {
2533         /*
2534          * display the newest DEFAULT_LOG_ENTRIES entries
2535          * i.e the entries just before the next ont that uCode would fill.
2536          */
2537         if (num_wraps) {
2538                 if (next_entry < size) {
2539                         pos = iwl_print_event_log(priv,
2540                                                 capacity - (size - next_entry),
2541                                                 size - next_entry, mode,
2542                                                 pos, buf, bufsz);
2543                         pos = iwl_print_event_log(priv, 0,
2544                                                   next_entry, mode,
2545                                                   pos, buf, bufsz);
2546                 } else
2547                         pos = iwl_print_event_log(priv, next_entry - size,
2548                                                   size, mode, pos, buf, bufsz);
2549         } else {
2550                 if (next_entry < size) {
2551                         pos = iwl_print_event_log(priv, 0, next_entry,
2552                                                   mode, pos, buf, bufsz);
2553                 } else {
2554                         pos = iwl_print_event_log(priv, next_entry - size,
2555                                                   size, mode, pos, buf, bufsz);
2556                 }
2557         }
2558         return pos;
2559 }
2560
2561 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2562
2563 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2564                             char **buf, bool display)
2565 {
2566         u32 base;       /* SRAM byte address of event log header */
2567         u32 capacity;   /* event log capacity in # entries */
2568         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2569         u32 num_wraps;  /* # times uCode wrapped to top of log */
2570         u32 next_entry; /* index of next entry to be written by uCode */
2571         u32 size;       /* # entries that we'll print */
2572         u32 logsize;
2573         int pos = 0;
2574         size_t bufsz = 0;
2575
2576         if (priv->ucode_type == UCODE_INIT) {
2577                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2578                 logsize = priv->_agn.init_evtlog_size;
2579                 if (!base)
2580                         base = priv->_agn.init_evtlog_ptr;
2581         } else {
2582                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2583                 logsize = priv->_agn.inst_evtlog_size;
2584                 if (!base)
2585                         base = priv->_agn.inst_evtlog_ptr;
2586         }
2587
2588         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2589                 IWL_ERR(priv,
2590                         "Invalid event log pointer 0x%08X for %s uCode\n",
2591                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2592                 return -EINVAL;
2593         }
2594
2595         /* event log header */
2596         capacity = iwl_read_targ_mem(priv, base);
2597         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2598         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2599         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2600
2601         if (capacity > logsize) {
2602                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2603                         capacity, logsize);
2604                 capacity = logsize;
2605         }
2606
2607         if (next_entry > logsize) {
2608                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2609                         next_entry, logsize);
2610                 next_entry = logsize;
2611         }
2612
2613         size = num_wraps ? capacity : next_entry;
2614
2615         /* bail out if nothing in log */
2616         if (size == 0) {
2617                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2618                 return pos;
2619         }
2620
2621         /* enable/disable bt channel announcement */
2622         priv->bt_ch_announce = iwlagn_bt_ch_announce;
2623
2624 #ifdef CONFIG_IWLWIFI_DEBUG
2625         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2626                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2627                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2628 #else
2629         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2630                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2631 #endif
2632         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2633                 size);
2634
2635 #ifdef CONFIG_IWLWIFI_DEBUG
2636         if (display) {
2637                 if (full_log)
2638                         bufsz = capacity * 48;
2639                 else
2640                         bufsz = size * 48;
2641                 *buf = kmalloc(bufsz, GFP_KERNEL);
2642                 if (!*buf)
2643                         return -ENOMEM;
2644         }
2645         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2646                 /*
2647                  * if uCode has wrapped back to top of log,
2648                  * start at the oldest entry,
2649                  * i.e the next one that uCode would fill.
2650                  */
2651                 if (num_wraps)
2652                         pos = iwl_print_event_log(priv, next_entry,
2653                                                 capacity - next_entry, mode,
2654                                                 pos, buf, bufsz);
2655                 /* (then/else) start at top of log */
2656                 pos = iwl_print_event_log(priv, 0,
2657                                           next_entry, mode, pos, buf, bufsz);
2658         } else
2659                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2660                                                 next_entry, size, mode,
2661                                                 pos, buf, bufsz);
2662 #else
2663         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2664                                         next_entry, size, mode,
2665                                         pos, buf, bufsz);
2666 #endif
2667         return pos;
2668 }
2669
2670 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2671 {
2672         struct iwl_ct_kill_config cmd;
2673         struct iwl_ct_kill_throttling_config adv_cmd;
2674         unsigned long flags;
2675         int ret = 0;
2676
2677         spin_lock_irqsave(&priv->lock, flags);
2678         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2679                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2680         spin_unlock_irqrestore(&priv->lock, flags);
2681         priv->thermal_throttle.ct_kill_toggle = false;
2682
2683         if (priv->cfg->support_ct_kill_exit) {
2684                 adv_cmd.critical_temperature_enter =
2685                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2686                 adv_cmd.critical_temperature_exit =
2687                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2688
2689                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2690                                        sizeof(adv_cmd), &adv_cmd);
2691                 if (ret)
2692                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2693                 else
2694                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2695                                         "succeeded, "
2696                                         "critical temperature enter is %d,"
2697                                         "exit is %d\n",
2698                                        priv->hw_params.ct_kill_threshold,
2699                                        priv->hw_params.ct_kill_exit_threshold);
2700         } else {
2701                 cmd.critical_temperature_R =
2702                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2703
2704                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2705                                        sizeof(cmd), &cmd);
2706                 if (ret)
2707                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2708                 else
2709                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2710                                         "succeeded, "
2711                                         "critical temperature is %d\n",
2712                                         priv->hw_params.ct_kill_threshold);
2713         }
2714 }
2715
2716 /**
2717  * iwl_alive_start - called after REPLY_ALIVE notification received
2718  *                   from protocol/runtime uCode (initialization uCode's
2719  *                   Alive gets handled by iwl_init_alive_start()).
2720  */
2721 static void iwl_alive_start(struct iwl_priv *priv)
2722 {
2723         int ret = 0;
2724         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2725
2726         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2727
2728         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2729                 /* We had an error bringing up the hardware, so take it
2730                  * all the way back down so we can try again */
2731                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2732                 goto restart;
2733         }
2734
2735         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2736          * This is a paranoid check, because we would not have gotten the
2737          * "runtime" alive if code weren't properly loaded.  */
2738         if (iwl_verify_ucode(priv)) {
2739                 /* Runtime instruction load was bad;
2740                  * take it all the way back down so we can try again */
2741                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2742                 goto restart;
2743         }
2744
2745         ret = priv->cfg->ops->lib->alive_notify(priv);
2746         if (ret) {
2747                 IWL_WARN(priv,
2748                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
2749                 goto restart;
2750         }
2751
2752         /* After the ALIVE response, we can send host commands to the uCode */
2753         set_bit(STATUS_ALIVE, &priv->status);
2754
2755         if (priv->cfg->ops->lib->recover_from_tx_stall) {
2756                 /* Enable timer to monitor the driver queues */
2757                 mod_timer(&priv->monitor_recover,
2758                         jiffies +
2759                         msecs_to_jiffies(priv->cfg->monitor_recover_period));
2760         }
2761
2762         if (iwl_is_rfkill(priv))
2763                 return;
2764
2765         ieee80211_wake_queues(priv->hw);
2766
2767         priv->active_rate = IWL_RATES_MASK;
2768
2769         /* Configure Tx antenna selection based on H/W config */
2770         if (priv->cfg->ops->hcmd->set_tx_ant)
2771                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2772
2773         if (iwl_is_associated_ctx(ctx)) {
2774                 struct iwl_rxon_cmd *active_rxon =
2775                                 (struct iwl_rxon_cmd *)&ctx->active;
2776                 /* apply any changes in staging */
2777                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2778                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2779         } else {
2780                 /* Initialize our rx_config data */
2781                 iwl_connection_init_rx_config(priv, NULL);
2782
2783                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2784                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2785         }
2786
2787         if (!priv->cfg->advanced_bt_coexist) {
2788                 /* Configure Bluetooth device coexistence support */
2789                 priv->cfg->ops->hcmd->send_bt_config(priv);
2790         }
2791
2792         iwl_reset_run_time_calib(priv);
2793
2794         /* Configure the adapter for unassociated operation */
2795         iwlcore_commit_rxon(priv, ctx);
2796
2797         /* At this point, the NIC is initialized and operational */
2798         iwl_rf_kill_ct_config(priv);
2799
2800         iwl_leds_init(priv);
2801
2802         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2803         set_bit(STATUS_READY, &priv->status);
2804         wake_up_interruptible(&priv->wait_command_queue);
2805
2806         iwl_power_update_mode(priv, true);
2807         IWL_DEBUG_INFO(priv, "Updated power mode\n");
2808
2809
2810         return;
2811
2812  restart:
2813         queue_work(priv->workqueue, &priv->restart);
2814 }
2815
2816 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2817
2818 static void __iwl_down(struct iwl_priv *priv)
2819 {
2820         unsigned long flags;
2821         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2822
2823         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2824
2825         if (!exit_pending)
2826                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2827
2828         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2829          * to prevent rearm timer */
2830         if (priv->cfg->ops->lib->recover_from_tx_stall)
2831                 del_timer_sync(&priv->monitor_recover);
2832
2833         iwl_clear_ucode_stations(priv, NULL);
2834         iwl_dealloc_bcast_stations(priv);
2835         iwl_clear_driver_stations(priv);
2836
2837         /* reset BT coex data */
2838         priv->bt_status = 0;
2839         priv->bt_traffic_load = priv->cfg->bt_init_traffic_load;
2840         priv->bt_sco_active = false;
2841         priv->bt_full_concurrent = false;
2842         priv->bt_ci_compliance = 0;
2843
2844         /* Unblock any waiting calls */
2845         wake_up_interruptible_all(&priv->wait_command_queue);
2846
2847         /* Wipe out the EXIT_PENDING status bit if we are not actually
2848          * exiting the module */
2849         if (!exit_pending)
2850                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2851
2852         /* stop and reset the on-board processor */
2853         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2854
2855         /* tell the device to stop sending interrupts */
2856         spin_lock_irqsave(&priv->lock, flags);
2857         iwl_disable_interrupts(priv);
2858         spin_unlock_irqrestore(&priv->lock, flags);
2859         iwl_synchronize_irq(priv);
2860
2861         if (priv->mac80211_registered)
2862                 ieee80211_stop_queues(priv->hw);
2863
2864         /* If we have not previously called iwl_init() then
2865          * clear all bits but the RF Kill bit and return */
2866         if (!iwl_is_init(priv)) {
2867                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2868                                         STATUS_RF_KILL_HW |
2869                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2870                                         STATUS_GEO_CONFIGURED |
2871                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2872                                         STATUS_EXIT_PENDING;
2873                 goto exit;
2874         }
2875
2876         /* ...otherwise clear out all the status bits but the RF Kill
2877          * bit and continue taking the NIC down. */
2878         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2879                                 STATUS_RF_KILL_HW |
2880                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2881                                 STATUS_GEO_CONFIGURED |
2882                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2883                                 STATUS_FW_ERROR |
2884                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2885                                 STATUS_EXIT_PENDING;
2886
2887         /* device going down, Stop using ICT table */
2888         iwl_disable_ict(priv);
2889
2890         iwlagn_txq_ctx_stop(priv);
2891         iwlagn_rxq_stop(priv);
2892
2893         /* Power-down device's busmaster DMA clocks */
2894         iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2895         udelay(5);
2896
2897         /* Make sure (redundant) we've released our request to stay awake */
2898         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2899
2900         /* Stop the device, and put it in low power state */
2901         priv->cfg->ops->lib->apm_ops.stop(priv);
2902
2903  exit:
2904         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2905
2906         if (priv->ibss_beacon)
2907                 dev_kfree_skb(priv->ibss_beacon);
2908         priv->ibss_beacon = NULL;
2909
2910         /* clear out any free frames */
2911         iwl_clear_free_frames(priv);
2912 }
2913
2914 static void iwl_down(struct iwl_priv *priv)
2915 {
2916         mutex_lock(&priv->mutex);
2917         __iwl_down(priv);
2918         mutex_unlock(&priv->mutex);
2919
2920         iwl_cancel_deferred_work(priv);
2921 }
2922
2923 #define HW_READY_TIMEOUT (50)
2924
2925 static int iwl_set_hw_ready(struct iwl_priv *priv)
2926 {
2927         int ret = 0;
2928
2929         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2930                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2931
2932         /* See if we got it */
2933         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2934                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2935                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2936                                 HW_READY_TIMEOUT);
2937         if (ret != -ETIMEDOUT)
2938                 priv->hw_ready = true;
2939         else
2940                 priv->hw_ready = false;
2941
2942         IWL_DEBUG_INFO(priv, "hardware %s\n",
2943                       (priv->hw_ready == 1) ? "ready" : "not ready");
2944         return ret;
2945 }
2946
2947 static int iwl_prepare_card_hw(struct iwl_priv *priv)
2948 {
2949         int ret = 0;
2950
2951         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
2952
2953         ret = iwl_set_hw_ready(priv);
2954         if (priv->hw_ready)
2955                 return ret;
2956
2957         /* If HW is not ready, prepare the conditions to check again */
2958         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2959                         CSR_HW_IF_CONFIG_REG_PREPARE);
2960
2961         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2962                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2963                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2964
2965         /* HW should be ready by now, check again. */
2966         if (ret != -ETIMEDOUT)
2967                 iwl_set_hw_ready(priv);
2968
2969         return ret;
2970 }
2971
2972 #define MAX_HW_RESTARTS 5
2973
2974 static int __iwl_up(struct iwl_priv *priv)
2975 {
2976         struct iwl_rxon_context *ctx;
2977         int i;
2978         int ret;
2979
2980         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2981                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2982                 return -EIO;
2983         }
2984
2985         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2986                 IWL_ERR(priv, "ucode not available for device bringup\n");
2987                 return -EIO;
2988         }
2989
2990         for_each_context(priv, ctx) {
2991                 ret = iwl_alloc_bcast_station(priv, ctx, true);
2992                 if (ret) {
2993                         iwl_dealloc_bcast_stations(priv);
2994                         return ret;
2995                 }
2996         }
2997
2998         iwl_prepare_card_hw(priv);
2999
3000         if (!priv->hw_ready) {
3001                 IWL_WARN(priv, "Exit HW not ready\n");
3002                 return -EIO;
3003         }
3004
3005         /* If platform's RF_KILL switch is NOT set to KILL */
3006         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3007                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3008         else
3009                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3010
3011         if (iwl_is_rfkill(priv)) {
3012                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
3013
3014                 iwl_enable_interrupts(priv);
3015                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3016                 return 0;
3017         }
3018
3019         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3020
3021         /* must be initialised before iwl_hw_nic_init */
3022         if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
3023                 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
3024         else
3025                 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
3026
3027         ret = iwlagn_hw_nic_init(priv);
3028         if (ret) {
3029                 IWL_ERR(priv, "Unable to init nic\n");
3030                 return ret;
3031         }
3032
3033         /* make sure rfkill handshake bits are cleared */
3034         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3035         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3036                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3037
3038         /* clear (again), then enable host interrupts */
3039         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3040         iwl_enable_interrupts(priv);
3041
3042         /* really make sure rfkill handshake bits are cleared */
3043         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3044         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3045
3046         /* Copy original ucode data image from disk into backup cache.
3047          * This will be used to initialize the on-board processor's
3048          * data SRAM for a clean start when the runtime program first loads. */
3049         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3050                priv->ucode_data.len);
3051
3052         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3053
3054                 /* load bootstrap state machine,
3055                  * load bootstrap program into processor's memory,
3056                  * prepare to load the "initialize" uCode */
3057                 ret = priv->cfg->ops->lib->load_ucode(priv);
3058
3059                 if (ret) {
3060                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
3061                                 ret);
3062                         continue;
3063                 }
3064
3065                 /* start card; "initialize" will load runtime ucode */
3066                 iwl_nic_start(priv);
3067
3068                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3069
3070                 return 0;
3071         }
3072
3073         set_bit(STATUS_EXIT_PENDING, &priv->status);
3074         __iwl_down(priv);
3075         clear_bit(STATUS_EXIT_PENDING, &priv->status);
3076
3077         /* tried to restart and config the device for as long as our
3078          * patience could withstand */
3079         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3080         return -EIO;
3081 }
3082
3083
3084 /*****************************************************************************
3085  *
3086  * Workqueue callbacks
3087  *
3088  *****************************************************************************/
3089
3090 static void iwl_bg_init_alive_start(struct work_struct *data)
3091 {
3092         struct iwl_priv *priv =
3093             container_of(data, struct iwl_priv, init_alive_start.work);
3094
3095         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3096                 return;
3097
3098         mutex_lock(&priv->mutex);
3099         priv->cfg->ops->lib->init_alive_start(priv);
3100         mutex_unlock(&priv->mutex);
3101 }
3102
3103 static void iwl_bg_alive_start(struct work_struct *data)
3104 {
3105         struct iwl_priv *priv =
3106             container_of(data, struct iwl_priv, alive_start.work);
3107
3108         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3109                 return;
3110
3111         /* enable dram interrupt */
3112         iwl_reset_ict(priv);
3113
3114         mutex_lock(&priv->mutex);
3115         iwl_alive_start(priv);
3116         mutex_unlock(&priv->mutex);
3117 }
3118
3119 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3120 {
3121         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3122                         run_time_calib_work);
3123
3124         mutex_lock(&priv->mutex);
3125
3126         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3127             test_bit(STATUS_SCANNING, &priv->status)) {
3128                 mutex_unlock(&priv->mutex);
3129                 return;
3130         }
3131
3132         if (priv->start_calib) {
3133                 if (priv->cfg->bt_statistics) {
3134                         iwl_chain_noise_calibration(priv,
3135                                         (void *)&priv->_agn.statistics_bt);
3136                         iwl_sensitivity_calibration(priv,
3137                                         (void *)&priv->_agn.statistics_bt);
3138                 } else {
3139                         iwl_chain_noise_calibration(priv,
3140                                         (void *)&priv->_agn.statistics);
3141                         iwl_sensitivity_calibration(priv,
3142                                         (void *)&priv->_agn.statistics);
3143                 }
3144         }
3145
3146         mutex_unlock(&priv->mutex);
3147 }
3148
3149 static void iwl_bg_restart(struct work_struct *data)
3150 {
3151         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3152
3153         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3154                 return;
3155
3156         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3157                 bool bt_sco, bt_full_concurrent;
3158                 u8 bt_ci_compliance;
3159                 u8 bt_load;
3160                 u8 bt_status;
3161
3162                 mutex_lock(&priv->mutex);
3163                 priv->vif = NULL;
3164                 priv->is_open = 0;
3165
3166                 /*
3167                  * __iwl_down() will clear the BT status variables,
3168                  * which is correct, but when we restart we really
3169                  * want to keep them so restore them afterwards.
3170                  *
3171                  * The restart process will later pick them up and
3172                  * re-configure the hw when we reconfigure the BT
3173                  * command.
3174                  */
3175                 bt_sco = priv->bt_sco_active;
3176                 bt_full_concurrent = priv->bt_full_concurrent;
3177                 bt_ci_compliance = priv->bt_ci_compliance;
3178                 bt_load = priv->bt_traffic_load;
3179                 bt_status = priv->bt_status;
3180
3181                 __iwl_down(priv);
3182
3183                 priv->bt_sco_active = bt_sco;
3184                 priv->bt_full_concurrent = bt_full_concurrent;
3185                 priv->bt_ci_compliance = bt_ci_compliance;
3186                 priv->bt_traffic_load = bt_load;
3187                 priv->bt_status = bt_status;
3188
3189                 mutex_unlock(&priv->mutex);
3190                 iwl_cancel_deferred_work(priv);
3191                 ieee80211_restart_hw(priv->hw);
3192         } else {
3193                 iwl_down(priv);
3194
3195                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3196                         return;
3197
3198                 mutex_lock(&priv->mutex);
3199                 __iwl_up(priv);
3200                 mutex_unlock(&priv->mutex);
3201         }
3202 }
3203
3204 static void iwl_bg_rx_replenish(struct work_struct *data)
3205 {
3206         struct iwl_priv *priv =
3207             container_of(data, struct iwl_priv, rx_replenish);
3208
3209         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3210                 return;
3211
3212         mutex_lock(&priv->mutex);
3213         iwlagn_rx_replenish(priv);
3214         mutex_unlock(&priv->mutex);
3215 }
3216
3217 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3218
3219 void iwl_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3220 {
3221         struct iwl_rxon_context *ctx;
3222         struct ieee80211_conf *conf = NULL;
3223         int ret = 0;
3224
3225         if (!vif || !priv->is_open)
3226                 return;
3227
3228         ctx = iwl_rxon_ctx_from_vif(vif);
3229
3230         if (vif->type == NL80211_IFTYPE_AP) {
3231                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3232                 return;
3233         }
3234
3235         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3236                 return;
3237
3238         iwl_scan_cancel_timeout(priv, 200);
3239
3240         conf = ieee80211_get_hw_conf(priv->hw);
3241
3242         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3243         iwlcore_commit_rxon(priv, ctx);
3244
3245         ret = iwl_send_rxon_timing(priv, vif);
3246         if (ret)
3247                 IWL_WARN(priv, "RXON timing - "
3248                             "Attempting to continue.\n");
3249
3250         ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3251
3252         iwl_set_rxon_ht(priv, &priv->current_ht_config);
3253
3254         if (priv->cfg->ops->hcmd->set_rxon_chain)
3255                 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3256
3257         ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3258
3259         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3260                         vif->bss_conf.aid, vif->bss_conf.beacon_int);
3261
3262         if (vif->bss_conf.use_short_preamble)
3263                 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3264         else
3265                 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3266
3267         if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3268                 if (vif->bss_conf.use_short_slot)
3269                         ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3270                 else
3271                         ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3272         }
3273
3274         iwlcore_commit_rxon(priv, ctx);
3275
3276         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3277                         vif->bss_conf.aid, ctx->active.bssid_addr);
3278
3279         switch (vif->type) {
3280         case NL80211_IFTYPE_STATION:
3281                 break;
3282         case NL80211_IFTYPE_ADHOC:
3283                 iwl_send_beacon_cmd(priv);
3284                 break;
3285         default:
3286                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3287                           __func__, vif->type);
3288                 break;
3289         }
3290
3291         /* the chain noise calibration will enabled PM upon completion
3292          * If chain noise has already been run, then we need to enable
3293          * power management here */
3294         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
3295                 iwl_power_update_mode(priv, false);
3296
3297         /* Enable Rx differential gain and sensitivity calibrations */
3298         iwl_chain_noise_reset(priv);
3299         priv->start_calib = 1;
3300
3301 }
3302
3303 /*****************************************************************************
3304  *
3305  * mac80211 entry point functions
3306  *
3307  *****************************************************************************/
3308
3309 #define UCODE_READY_TIMEOUT     (4 * HZ)
3310
3311 /*
3312  * Not a mac80211 entry point function, but it fits in with all the
3313  * other mac80211 functions grouped here.
3314  */
3315 static int iwl_mac_setup_register(struct iwl_priv *priv,
3316                                   struct iwlagn_ucode_capabilities *capa)
3317 {
3318         int ret;
3319         struct ieee80211_hw *hw = priv->hw;
3320         hw->rate_control_algorithm = "iwl-agn-rs";
3321
3322         /* Tell mac80211 our characteristics */
3323         hw->flags = IEEE80211_HW_SIGNAL_DBM |
3324                     IEEE80211_HW_AMPDU_AGGREGATION |
3325                     IEEE80211_HW_SPECTRUM_MGMT;
3326
3327         if (!priv->cfg->broken_powersave)
3328                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3329                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3330
3331         if (priv->cfg->sku & IWL_SKU_N)
3332                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
3333                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
3334
3335         hw->sta_data_size = sizeof(struct iwl_station_priv);
3336         hw->vif_data_size = sizeof(struct iwl_vif_priv);
3337
3338         hw->wiphy->interface_modes =
3339                 BIT(NL80211_IFTYPE_STATION) |
3340                 BIT(NL80211_IFTYPE_ADHOC);
3341
3342         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3343                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
3344
3345         /*
3346          * For now, disable PS by default because it affects
3347          * RX performance significantly.
3348          */
3349         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3350
3351         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3352         /* we create the 802.11 header and a zero-length SSID element */
3353         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3354
3355         /* Default value; 4 EDCA QOS priorities */
3356         hw->queues = 4;
3357
3358         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
3359
3360         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3361                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3362                         &priv->bands[IEEE80211_BAND_2GHZ];
3363         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3364                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3365                         &priv->bands[IEEE80211_BAND_5GHZ];
3366
3367         ret = ieee80211_register_hw(priv->hw);
3368         if (ret) {
3369                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3370                 return ret;
3371         }
3372         priv->mac80211_registered = 1;
3373
3374         return 0;
3375 }
3376
3377
3378 static int iwl_mac_start(struct ieee80211_hw *hw)
3379 {
3380         struct iwl_priv *priv = hw->priv;
3381         int ret;
3382
3383         IWL_DEBUG_MAC80211(priv, "enter\n");
3384
3385         /* we should be verifying the device is ready to be opened */
3386         mutex_lock(&priv->mutex);
3387         ret = __iwl_up(priv);
3388         mutex_unlock(&priv->mutex);
3389
3390         if (ret)
3391                 return ret;
3392
3393         if (iwl_is_rfkill(priv))
3394                 goto out;
3395
3396         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3397
3398         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3399          * mac80211 will not be run successfully. */
3400         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3401                         test_bit(STATUS_READY, &priv->status),
3402                         UCODE_READY_TIMEOUT);
3403         if (!ret) {
3404                 if (!test_bit(STATUS_READY, &priv->status)) {
3405                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3406                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3407                         return -ETIMEDOUT;
3408                 }
3409         }
3410
3411         iwl_led_start(priv);
3412
3413 out:
3414         priv->is_open = 1;
3415         IWL_DEBUG_MAC80211(priv, "leave\n");
3416         return 0;
3417 }
3418
3419 static void iwl_mac_stop(struct ieee80211_hw *hw)
3420 {
3421         struct iwl_priv *priv = hw->priv;
3422
3423         IWL_DEBUG_MAC80211(priv, "enter\n");
3424
3425         if (!priv->is_open)
3426                 return;
3427
3428         priv->is_open = 0;
3429
3430         if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
3431                 /* stop mac, cancel any scan request and clear
3432                  * RXON_FILTER_ASSOC_MSK BIT
3433                  */
3434                 mutex_lock(&priv->mutex);
3435                 iwl_scan_cancel_timeout(priv, 100);
3436                 mutex_unlock(&priv->mutex);
3437         }
3438
3439         iwl_down(priv);
3440
3441         flush_workqueue(priv->workqueue);
3442
3443         /* enable interrupts again in order to receive rfkill changes */
3444         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3445         iwl_enable_interrupts(priv);
3446
3447         IWL_DEBUG_MAC80211(priv, "leave\n");
3448 }
3449
3450 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3451 {
3452         struct iwl_priv *priv = hw->priv;
3453
3454         IWL_DEBUG_MACDUMP(priv, "enter\n");
3455
3456         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3457                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3458
3459         if (iwlagn_tx_skb(priv, skb))
3460                 dev_kfree_skb_any(skb);
3461
3462         IWL_DEBUG_MACDUMP(priv, "leave\n");
3463         return NETDEV_TX_OK;
3464 }
3465
3466 void iwl_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3467 {
3468         struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3469         int ret = 0;
3470
3471         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3472                 return;
3473
3474         /* The following should be done only at AP bring up */
3475         if (!iwl_is_associated_ctx(ctx)) {
3476
3477                 /* RXON - unassoc (to set timing command) */
3478                 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3479                 iwlcore_commit_rxon(priv, ctx);
3480
3481                 /* RXON Timing */
3482                 ret = iwl_send_rxon_timing(priv, vif);
3483                 if (ret)
3484                         IWL_WARN(priv, "RXON timing failed - "
3485                                         "Attempting to continue.\n");
3486
3487                 /* AP has all antennas */
3488                 priv->chain_noise_data.active_chains =
3489                         priv->hw_params.valid_rx_ant;
3490                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3491                 if (priv->cfg->ops->hcmd->set_rxon_chain)
3492                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3493
3494                 ctx->staging.assoc_id = 0;
3495
3496                 if (vif->bss_conf.use_short_preamble)
3497                         ctx->staging.flags |=
3498                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3499                 else
3500                         ctx->staging.flags &=
3501                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3502
3503                 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3504                         if (vif->bss_conf.use_short_slot)
3505                                 ctx->staging.flags |=
3506                                         RXON_FLG_SHORT_SLOT_MSK;
3507                         else
3508                                 ctx->staging.flags &=
3509                                         ~RXON_FLG_SHORT_SLOT_MSK;
3510                 }
3511                 /* restore RXON assoc */
3512                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3513                 iwlcore_commit_rxon(priv, ctx);
3514         }
3515         iwl_send_beacon_cmd(priv);
3516
3517         /* FIXME - we need to add code here to detect a totally new
3518          * configuration, reset the AP, unassoc, rxon timing, assoc,
3519          * clear sta table, add BCAST sta... */
3520 }
3521
3522 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3523                                     struct ieee80211_vif *vif,
3524                                     struct ieee80211_key_conf *keyconf,
3525                                     struct ieee80211_sta *sta,
3526                                     u32 iv32, u16 *phase1key)
3527 {
3528
3529         struct iwl_priv *priv = hw->priv;
3530         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3531
3532         IWL_DEBUG_MAC80211(priv, "enter\n");
3533
3534         iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3535                             iv32, phase1key);
3536
3537         IWL_DEBUG_MAC80211(priv, "leave\n");
3538 }
3539
3540 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3541                            struct ieee80211_vif *vif,
3542                            struct ieee80211_sta *sta,
3543                            struct ieee80211_key_conf *key)
3544 {
3545         struct iwl_priv *priv = hw->priv;
3546         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3547         int ret;
3548         u8 sta_id;
3549         bool is_default_wep_key = false;
3550
3551         IWL_DEBUG_MAC80211(priv, "enter\n");
3552
3553         if (priv->cfg->mod_params->sw_crypto) {
3554                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3555                 return -EOPNOTSUPP;
3556         }
3557
3558         sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3559         if (sta_id == IWL_INVALID_STATION)
3560                 return -EINVAL;
3561
3562         mutex_lock(&priv->mutex);
3563         iwl_scan_cancel_timeout(priv, 100);
3564
3565         /*
3566          * If we are getting WEP group key and we didn't receive any key mapping
3567          * so far, we are in legacy wep mode (group key only), otherwise we are
3568          * in 1X mode.
3569          * In legacy wep mode, we use another host command to the uCode.
3570          */
3571         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3572              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3573             !sta) {
3574                 if (cmd == SET_KEY)
3575                         is_default_wep_key = !priv->key_mapping_key;
3576                 else
3577                         is_default_wep_key =
3578                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3579         }
3580
3581         switch (cmd) {
3582         case SET_KEY:
3583                 if (is_default_wep_key)
3584                         ret = iwl_set_default_wep_key(priv, key);
3585                 else
3586                         ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
3587                                                   key, sta_id);
3588
3589                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3590                 break;
3591         case DISABLE_KEY:
3592                 if (is_default_wep_key)
3593                         ret = iwl_remove_default_wep_key(priv, key);
3594                 else
3595                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3596
3597                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3598                 break;
3599         default:
3600                 ret = -EINVAL;
3601         }
3602
3603         mutex_unlock(&priv->mutex);
3604         IWL_DEBUG_MAC80211(priv, "leave\n");
3605
3606         return ret;
3607 }
3608
3609 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3610                                 struct ieee80211_vif *vif,
3611                                 enum ieee80211_ampdu_mlme_action action,
3612                                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3613 {
3614         struct iwl_priv *priv = hw->priv;
3615         int ret = -EINVAL;
3616
3617         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
3618                      sta->addr, tid);
3619
3620         if (!(priv->cfg->sku & IWL_SKU_N))
3621                 return -EACCES;
3622
3623         mutex_lock(&priv->mutex);
3624
3625         switch (action) {
3626         case IEEE80211_AMPDU_RX_START:
3627                 IWL_DEBUG_HT(priv, "start Rx\n");
3628                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
3629                 break;
3630         case IEEE80211_AMPDU_RX_STOP:
3631                 IWL_DEBUG_HT(priv, "stop Rx\n");
3632                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3633                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3634                         ret = 0;
3635                 break;
3636         case IEEE80211_AMPDU_TX_START:
3637                 IWL_DEBUG_HT(priv, "start Tx\n");
3638                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
3639                 if (ret == 0) {
3640                         priv->_agn.agg_tids_count++;
3641                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3642                                      priv->_agn.agg_tids_count);
3643                 }
3644                 break;
3645         case IEEE80211_AMPDU_TX_STOP:
3646                 IWL_DEBUG_HT(priv, "stop Tx\n");
3647                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
3648                 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
3649                         priv->_agn.agg_tids_count--;
3650                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3651                                      priv->_agn.agg_tids_count);
3652                 }
3653                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3654                         ret = 0;
3655                 if (priv->cfg->use_rts_for_aggregation) {
3656                         struct iwl_station_priv *sta_priv =
3657                                 (void *) sta->drv_priv;
3658                         /*
3659                          * switch off RTS/CTS if it was previously enabled
3660                          */
3661
3662                         sta_priv->lq_sta.lq.general_params.flags &=
3663                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3664                         iwl_send_lq_cmd(priv, &sta_priv->lq_sta.lq,
3665                                 CMD_ASYNC, false);
3666                 }
3667                 break;
3668         case IEEE80211_AMPDU_TX_OPERATIONAL:
3669                 if (priv->cfg->use_rts_for_aggregation) {
3670                         struct iwl_station_priv *sta_priv =
3671                                 (void *) sta->drv_priv;
3672
3673                         /*
3674                          * switch to RTS/CTS if it is the prefer protection
3675                          * method for HT traffic
3676                          */
3677
3678                         sta_priv->lq_sta.lq.general_params.flags |=
3679                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3680                         iwl_send_lq_cmd(priv, &sta_priv->lq_sta.lq,
3681                                 CMD_ASYNC, false);
3682                 }
3683                 ret = 0;
3684                 break;
3685         }
3686         mutex_unlock(&priv->mutex);
3687
3688         return ret;
3689 }
3690
3691 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
3692                                struct ieee80211_vif *vif,
3693                                enum sta_notify_cmd cmd,
3694                                struct ieee80211_sta *sta)
3695 {
3696         struct iwl_priv *priv = hw->priv;
3697         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3698         int sta_id;
3699
3700         switch (cmd) {
3701         case STA_NOTIFY_SLEEP:
3702                 WARN_ON(!sta_priv->client);
3703                 sta_priv->asleep = true;
3704                 if (atomic_read(&sta_priv->pending_frames) > 0)
3705                         ieee80211_sta_block_awake(hw, sta, true);
3706                 break;
3707         case STA_NOTIFY_AWAKE:
3708                 WARN_ON(!sta_priv->client);
3709                 if (!sta_priv->asleep)
3710                         break;
3711                 sta_priv->asleep = false;
3712                 sta_id = iwl_sta_id(sta);
3713                 if (sta_id != IWL_INVALID_STATION)
3714                         iwl_sta_modify_ps_wake(priv, sta_id);
3715                 break;
3716         default:
3717                 break;
3718         }
3719 }
3720
3721 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3722                               struct ieee80211_vif *vif,
3723                               struct ieee80211_sta *sta)
3724 {
3725         struct iwl_priv *priv = hw->priv;
3726         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3727         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3728         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3729         int ret;
3730         u8 sta_id;
3731
3732         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3733                         sta->addr);
3734         mutex_lock(&priv->mutex);
3735         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3736                         sta->addr);
3737         sta_priv->common.sta_id = IWL_INVALID_STATION;
3738
3739         atomic_set(&sta_priv->pending_frames, 0);
3740         if (vif->type == NL80211_IFTYPE_AP)
3741                 sta_priv->client = true;
3742
3743         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3744                                      is_ap, &sta->ht_cap, &sta_id);
3745         if (ret) {
3746                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3747                         sta->addr, ret);
3748                 /* Should we return success if return code is EEXIST ? */
3749                 mutex_unlock(&priv->mutex);
3750                 return ret;
3751         }
3752
3753         sta_priv->common.sta_id = sta_id;
3754
3755         /* Initialize rate scaling */
3756         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3757                        sta->addr);
3758         iwl_rs_rate_init(priv, sta, sta_id);
3759         mutex_unlock(&priv->mutex);
3760
3761         return 0;
3762 }
3763
3764 static void iwl_mac_channel_switch(struct ieee80211_hw *hw,
3765                                    struct ieee80211_channel_switch *ch_switch)
3766 {
3767         struct iwl_priv *priv = hw->priv;
3768         const struct iwl_channel_info *ch_info;
3769         struct ieee80211_conf *conf = &hw->conf;
3770         struct ieee80211_channel *channel = ch_switch->channel;
3771         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3772         /*
3773          * MULTI-FIXME
3774          * When we add support for multiple interfaces, we need to
3775          * revisit this. The channel switch command in the device
3776          * only affects the BSS context, but what does that really
3777          * mean? And what if we get a CSA on the second interface?
3778          * This needs a lot of work.
3779          */
3780         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3781         u16 ch;
3782         unsigned long flags = 0;
3783
3784         IWL_DEBUG_MAC80211(priv, "enter\n");
3785
3786         if (iwl_is_rfkill(priv))
3787                 goto out_exit;
3788
3789         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3790             test_bit(STATUS_SCANNING, &priv->status))
3791                 goto out_exit;
3792
3793         if (!iwl_is_associated_ctx(ctx))
3794                 goto out_exit;
3795
3796         /* channel switch in progress */
3797         if (priv->switch_rxon.switch_in_progress == true)
3798                 goto out_exit;
3799
3800         mutex_lock(&priv->mutex);
3801         if (priv->cfg->ops->lib->set_channel_switch) {
3802
3803                 ch = channel->hw_value;
3804                 if (le16_to_cpu(ctx->active.channel) != ch) {
3805                         ch_info = iwl_get_channel_info(priv,
3806                                                        channel->band,
3807                                                        ch);
3808                         if (!is_channel_valid(ch_info)) {
3809                                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3810                                 goto out;
3811                         }
3812                         spin_lock_irqsave(&priv->lock, flags);
3813
3814                         priv->current_ht_config.smps = conf->smps_mode;
3815
3816                         /* Configure HT40 channels */
3817                         ht_conf->is_ht = conf_is_ht(conf);
3818                         if (ht_conf->is_ht) {
3819                                 if (conf_is_ht40_minus(conf)) {
3820                                         ht_conf->extension_chan_offset =
3821                                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3822                                         ht_conf->is_40mhz = true;
3823                                 } else if (conf_is_ht40_plus(conf)) {
3824                                         ht_conf->extension_chan_offset =
3825                                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3826                                         ht_conf->is_40mhz = true;
3827                                 } else {
3828                                         ht_conf->extension_chan_offset =
3829                                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3830                                         ht_conf->is_40mhz = false;
3831                                 }
3832                         } else
3833                                 ht_conf->is_40mhz = false;
3834
3835                         if ((le16_to_cpu(ctx->staging.channel) != ch))
3836                                 ctx->staging.flags = 0;
3837
3838                         iwl_set_rxon_channel(priv, channel, ctx);
3839                         iwl_set_rxon_ht(priv, ht_conf);
3840                         iwl_set_flags_for_band(priv, ctx, channel->band,
3841                                                priv->vif);
3842                         spin_unlock_irqrestore(&priv->lock, flags);
3843
3844                         iwl_set_rate(priv);
3845                         /*
3846                          * at this point, staging_rxon has the
3847                          * configuration for channel switch
3848                          */
3849                         if (priv->cfg->ops->lib->set_channel_switch(priv,
3850                                                                     ch_switch))
3851                                 priv->switch_rxon.switch_in_progress = false;
3852                 }
3853         }
3854 out:
3855         mutex_unlock(&priv->mutex);
3856 out_exit:
3857         if (!priv->switch_rxon.switch_in_progress)
3858                 ieee80211_chswitch_done(priv->vif, false);
3859         IWL_DEBUG_MAC80211(priv, "leave\n");
3860 }
3861
3862 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3863                                     unsigned int changed_flags,
3864                                     unsigned int *total_flags,
3865                                     u64 multicast)
3866 {
3867         struct iwl_priv *priv = hw->priv;
3868         __le32 filter_or = 0, filter_nand = 0;
3869         struct iwl_rxon_context *ctx;
3870
3871 #define CHK(test, flag) do { \
3872         if (*total_flags & (test))              \
3873                 filter_or |= (flag);            \
3874         else                                    \
3875                 filter_nand |= (flag);          \
3876         } while (0)
3877
3878         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3879                         changed_flags, *total_flags);
3880
3881         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3882         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3883         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3884
3885 #undef CHK
3886
3887         mutex_lock(&priv->mutex);
3888
3889         for_each_context(priv, ctx) {
3890                 ctx->staging.filter_flags &= ~filter_nand;
3891                 ctx->staging.filter_flags |= filter_or;
3892                 iwlcore_commit_rxon(priv, ctx);
3893         }
3894
3895         mutex_unlock(&priv->mutex);
3896
3897         /*
3898          * Receiving all multicast frames is always enabled by the
3899          * default flags setup in iwl_connection_init_rx_config()
3900          * since we currently do not support programming multicast
3901          * filters into the device.
3902          */
3903         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3904                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3905 }
3906
3907 static void iwl_mac_flush(struct ieee80211_hw *hw, bool drop)
3908 {
3909         struct iwl_priv *priv = hw->priv;
3910
3911         mutex_lock(&priv->mutex);
3912         IWL_DEBUG_MAC80211(priv, "enter\n");
3913
3914         /* do not support "flush" */
3915         if (!priv->cfg->ops->lib->txfifo_flush)
3916                 goto done;
3917
3918         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3919                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3920                 goto done;
3921         }
3922         if (iwl_is_rfkill(priv)) {
3923                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3924                 goto done;
3925         }
3926
3927         /*
3928          * mac80211 will not push any more frames for transmit
3929          * until the flush is completed
3930          */
3931         if (drop) {
3932                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3933                 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
3934                         IWL_ERR(priv, "flush request fail\n");
3935                         goto done;
3936                 }
3937         }
3938         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3939         iwlagn_wait_tx_queue_empty(priv);
3940 done:
3941         mutex_unlock(&priv->mutex);
3942         IWL_DEBUG_MAC80211(priv, "leave\n");
3943 }
3944
3945 /*****************************************************************************
3946  *
3947  * driver setup and teardown
3948  *
3949  *****************************************************************************/
3950
3951 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3952 {
3953         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3954
3955         init_waitqueue_head(&priv->wait_command_queue);
3956
3957         INIT_WORK(&priv->restart, iwl_bg_restart);
3958         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3959         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3960         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3961         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3962         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3963         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3964         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3965         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3966
3967         iwl_setup_scan_deferred_work(priv);
3968
3969         if (priv->cfg->ops->lib->setup_deferred_work)
3970                 priv->cfg->ops->lib->setup_deferred_work(priv);
3971
3972         init_timer(&priv->statistics_periodic);
3973         priv->statistics_periodic.data = (unsigned long)priv;
3974         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3975
3976         init_timer(&priv->ucode_trace);
3977         priv->ucode_trace.data = (unsigned long)priv;
3978         priv->ucode_trace.function = iwl_bg_ucode_trace;
3979
3980         if (priv->cfg->ops->lib->recover_from_tx_stall) {
3981                 init_timer(&priv->monitor_recover);
3982                 priv->monitor_recover.data = (unsigned long)priv;
3983                 priv->monitor_recover.function =
3984                         priv->cfg->ops->lib->recover_from_tx_stall;
3985         }
3986
3987         if (!priv->cfg->use_isr_legacy)
3988                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3989                         iwl_irq_tasklet, (unsigned long)priv);
3990         else
3991                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3992                         iwl_irq_tasklet_legacy, (unsigned long)priv);
3993 }
3994
3995 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3996 {
3997         if (priv->cfg->ops->lib->cancel_deferred_work)
3998                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3999
4000         cancel_delayed_work_sync(&priv->init_alive_start);
4001         cancel_delayed_work(&priv->scan_check);
4002         cancel_work_sync(&priv->start_internal_scan);
4003         cancel_delayed_work(&priv->alive_start);
4004         cancel_work_sync(&priv->run_time_calib_work);
4005         cancel_work_sync(&priv->beacon_update);
4006         cancel_work_sync(&priv->bt_full_concurrency);
4007         cancel_work_sync(&priv->bt_runtime_config);
4008         del_timer_sync(&priv->statistics_periodic);
4009         del_timer_sync(&priv->ucode_trace);
4010 }
4011
4012 static void iwl_init_hw_rates(struct iwl_priv *priv,
4013                               struct ieee80211_rate *rates)
4014 {
4015         int i;
4016
4017         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
4018                 rates[i].bitrate = iwl_rates[i].ieee * 5;
4019                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4020                 rates[i].hw_value_short = i;
4021                 rates[i].flags = 0;
4022                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
4023                         /*
4024                          * If CCK != 1M then set short preamble rate flag.
4025                          */
4026                         rates[i].flags |=
4027                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4028                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4029                 }
4030         }
4031 }
4032
4033 static int iwl_init_drv(struct iwl_priv *priv)
4034 {
4035         int ret;
4036
4037         priv->ibss_beacon = NULL;
4038
4039         spin_lock_init(&priv->sta_lock);
4040         spin_lock_init(&priv->hcmd_lock);
4041
4042         INIT_LIST_HEAD(&priv->free_frames);
4043
4044         mutex_init(&priv->mutex);
4045         mutex_init(&priv->sync_cmd_mutex);
4046
4047         priv->ieee_channels = NULL;
4048         priv->ieee_rates = NULL;
4049         priv->band = IEEE80211_BAND_2GHZ;
4050
4051         priv->iw_mode = NL80211_IFTYPE_STATION;
4052         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
4053         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
4054         priv->_agn.agg_tids_count = 0;
4055
4056         /* initialize force reset */
4057         priv->force_reset[IWL_RF_RESET].reset_duration =
4058                 IWL_DELAY_NEXT_FORCE_RF_RESET;
4059         priv->force_reset[IWL_FW_RESET].reset_duration =
4060                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
4061
4062         /* Choose which receivers/antennas to use */
4063         if (priv->cfg->ops->hcmd->set_rxon_chain)
4064                 priv->cfg->ops->hcmd->set_rxon_chain(priv,
4065                                         &priv->contexts[IWL_RXON_CTX_BSS]);
4066
4067         iwl_init_scan_params(priv);
4068
4069         /* init bt coex */
4070         if (priv->cfg->advanced_bt_coexist) {
4071                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
4072                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
4073                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
4074                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
4075                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
4076                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
4077                 priv->dynamic_agg_thresh = BT_AGG_THRESHOLD_DEF;
4078         }
4079
4080         /* Set the tx_power_user_lmt to the lowest power level
4081          * this value will get overwritten by channel max power avg
4082          * from eeprom */
4083         priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
4084
4085         ret = iwl_init_channel_map(priv);
4086         if (ret) {
4087                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4088                 goto err;
4089         }
4090
4091         ret = iwlcore_init_geos(priv);
4092         if (ret) {
4093                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4094                 goto err_free_channel_map;
4095         }
4096         iwl_init_hw_rates(priv, priv->ieee_rates);
4097
4098         return 0;
4099
4100 err_free_channel_map:
4101         iwl_free_channel_map(priv);
4102 err:
4103         return ret;
4104 }
4105
4106 static void iwl_uninit_drv(struct iwl_priv *priv)
4107 {
4108         iwl_calib_free_results(priv);
4109         iwlcore_free_geos(priv);
4110         iwl_free_channel_map(priv);
4111         kfree(priv->scan_cmd);
4112 }
4113
4114 static struct ieee80211_ops iwl_hw_ops = {
4115         .tx = iwl_mac_tx,
4116         .start = iwl_mac_start,
4117         .stop = iwl_mac_stop,
4118         .add_interface = iwl_mac_add_interface,
4119         .remove_interface = iwl_mac_remove_interface,
4120         .config = iwl_mac_config,
4121         .configure_filter = iwlagn_configure_filter,
4122         .set_key = iwl_mac_set_key,
4123         .update_tkip_key = iwl_mac_update_tkip_key,
4124         .conf_tx = iwl_mac_conf_tx,
4125         .reset_tsf = iwl_mac_reset_tsf,
4126         .bss_info_changed = iwl_bss_info_changed,
4127         .ampdu_action = iwl_mac_ampdu_action,
4128         .hw_scan = iwl_mac_hw_scan,
4129         .sta_notify = iwl_mac_sta_notify,
4130         .sta_add = iwlagn_mac_sta_add,
4131         .sta_remove = iwl_mac_sta_remove,
4132         .channel_switch = iwl_mac_channel_switch,
4133         .flush = iwl_mac_flush,
4134         .tx_last_beacon = iwl_mac_tx_last_beacon,
4135 };
4136
4137 static void iwl_hw_detect(struct iwl_priv *priv)
4138 {
4139         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
4140         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
4141         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
4142         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
4143 }
4144
4145 static int iwl_set_hw_params(struct iwl_priv *priv)
4146 {
4147         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
4148         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
4149         if (priv->cfg->mod_params->amsdu_size_8K)
4150                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
4151         else
4152                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
4153
4154         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
4155
4156         if (priv->cfg->mod_params->disable_11n)
4157                 priv->cfg->sku &= ~IWL_SKU_N;
4158
4159         /* Device-specific setup */
4160         return priv->cfg->ops->lib->set_hw_params(priv);
4161 }
4162
4163 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4164 {
4165         int err = 0, i;
4166         struct iwl_priv *priv;
4167         struct ieee80211_hw *hw;
4168         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4169         unsigned long flags;
4170         u16 pci_cmd, num_mac;
4171
4172         /************************
4173          * 1. Allocating HW data
4174          ************************/
4175
4176         /* Disabling hardware scan means that mac80211 will perform scans
4177          * "the hard way", rather than using device's scan. */
4178         if (cfg->mod_params->disable_hw_scan) {
4179                 if (iwl_debug_level & IWL_DL_INFO)
4180                         dev_printk(KERN_DEBUG, &(pdev->dev),
4181                                    "Disabling hw_scan\n");
4182                 iwl_hw_ops.hw_scan = NULL;
4183         }
4184
4185         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
4186         if (!hw) {
4187                 err = -ENOMEM;
4188                 goto out;
4189         }
4190         priv = hw->priv;
4191         /* At this point both hw and priv are allocated. */
4192
4193         /*
4194          * The default context is always valid,
4195          * more may be discovered when firmware
4196          * is loaded.
4197          */
4198         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
4199
4200         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
4201                 priv->contexts[i].ctxid = i;
4202
4203         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
4204         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
4205         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
4206         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
4207         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 1);
4208
4209         SET_IEEE80211_DEV(hw, &pdev->dev);
4210
4211         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4212         priv->cfg = cfg;
4213         priv->pci_dev = pdev;
4214         priv->inta_mask = CSR_INI_SET_MASK;
4215
4216         /* is antenna coupling more than 35dB ? */
4217         priv->bt_ant_couple_ok =
4218                 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
4219                 true : false;
4220
4221         /* enable/disable bt channel announcement */
4222         priv->bt_ch_announce = iwlagn_bt_ch_announce;
4223
4224         if (iwl_alloc_traffic_mem(priv))
4225                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4226
4227         /**************************
4228          * 2. Initializing PCI bus
4229          **************************/
4230         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
4231                                 PCIE_LINK_STATE_CLKPM);
4232
4233         if (pci_enable_device(pdev)) {
4234                 err = -ENODEV;
4235                 goto out_ieee80211_free_hw;
4236         }
4237
4238         pci_set_master(pdev);
4239
4240         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4241         if (!err)
4242                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4243         if (err) {
4244                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4245                 if (!err)
4246                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4247                 /* both attempts failed: */
4248                 if (err) {
4249                         IWL_WARN(priv, "No suitable DMA available.\n");
4250                         goto out_pci_disable_device;
4251                 }
4252         }
4253
4254         err = pci_request_regions(pdev, DRV_NAME);
4255         if (err)
4256                 goto out_pci_disable_device;
4257
4258         pci_set_drvdata(pdev, priv);
4259
4260
4261         /***********************
4262          * 3. Read REV register
4263          ***********************/
4264         priv->hw_base = pci_iomap(pdev, 0, 0);
4265         if (!priv->hw_base) {
4266                 err = -ENODEV;
4267                 goto out_pci_release_regions;
4268         }
4269
4270         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4271                 (unsigned long long) pci_resource_len(pdev, 0));
4272         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4273
4274         /* these spin locks will be used in apm_ops.init and EEPROM access
4275          * we should init now
4276          */
4277         spin_lock_init(&priv->reg_lock);
4278         spin_lock_init(&priv->lock);
4279
4280         /*
4281          * stop and reset the on-board processor just in case it is in a
4282          * strange state ... like being left stranded by a primary kernel
4283          * and this is now the kdump kernel trying to start up
4284          */
4285         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4286
4287         iwl_hw_detect(priv);
4288         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
4289                 priv->cfg->name, priv->hw_rev);
4290
4291         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4292          * PCI Tx retries from interfering with C3 CPU state */
4293         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4294
4295         iwl_prepare_card_hw(priv);
4296         if (!priv->hw_ready) {
4297                 IWL_WARN(priv, "Failed, HW not ready\n");
4298                 goto out_iounmap;
4299         }
4300
4301         /*****************
4302          * 4. Read EEPROM
4303          *****************/
4304         /* Read the EEPROM */
4305         err = iwl_eeprom_init(priv);
4306         if (err) {
4307                 IWL_ERR(priv, "Unable to init EEPROM\n");
4308                 goto out_iounmap;
4309         }
4310         err = iwl_eeprom_check_version(priv);
4311         if (err)
4312                 goto out_free_eeprom;
4313
4314         /* extract MAC Address */
4315         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
4316         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
4317         priv->hw->wiphy->addresses = priv->addresses;
4318         priv->hw->wiphy->n_addresses = 1;
4319         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
4320         if (num_mac > 1) {
4321                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
4322                        ETH_ALEN);
4323                 priv->addresses[1].addr[5]++;
4324                 priv->hw->wiphy->n_addresses++;
4325         }
4326
4327         /************************
4328          * 5. Setup HW constants
4329          ************************/
4330         if (iwl_set_hw_params(priv)) {
4331                 IWL_ERR(priv, "failed to set hw parameters\n");
4332                 goto out_free_eeprom;
4333         }
4334
4335         /*******************
4336          * 6. Setup priv
4337          *******************/
4338
4339         err = iwl_init_drv(priv);
4340         if (err)
4341                 goto out_free_eeprom;
4342         /* At this point both hw and priv are initialized. */
4343
4344         /********************
4345          * 7. Setup services
4346          ********************/
4347         spin_lock_irqsave(&priv->lock, flags);
4348         iwl_disable_interrupts(priv);
4349         spin_unlock_irqrestore(&priv->lock, flags);
4350
4351         pci_enable_msi(priv->pci_dev);
4352
4353         iwl_alloc_isr_ict(priv);
4354         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4355                           IRQF_SHARED, DRV_NAME, priv);
4356         if (err) {
4357                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4358                 goto out_disable_msi;
4359         }
4360
4361         iwl_setup_deferred_work(priv);
4362         iwl_setup_rx_handlers(priv);
4363
4364         /*********************************************
4365          * 8. Enable interrupts and read RFKILL state
4366          *********************************************/
4367
4368         /* enable interrupts if needed: hw bug w/a */
4369         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
4370         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
4371                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
4372                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
4373         }
4374
4375         iwl_enable_interrupts(priv);
4376
4377         /* If platform's RF_KILL switch is NOT set to KILL */
4378         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4379                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4380         else
4381                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4382
4383         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
4384                 test_bit(STATUS_RF_KILL_HW, &priv->status));
4385
4386         iwl_power_initialize(priv);
4387         iwl_tt_initialize(priv);
4388
4389         init_completion(&priv->_agn.firmware_loading_complete);
4390
4391         err = iwl_request_firmware(priv, true);
4392         if (err)
4393                 goto out_destroy_workqueue;
4394
4395         return 0;
4396
4397  out_destroy_workqueue:
4398         destroy_workqueue(priv->workqueue);
4399         priv->workqueue = NULL;
4400         free_irq(priv->pci_dev->irq, priv);
4401         iwl_free_isr_ict(priv);
4402  out_disable_msi:
4403         pci_disable_msi(priv->pci_dev);
4404         iwl_uninit_drv(priv);
4405  out_free_eeprom:
4406         iwl_eeprom_free(priv);
4407  out_iounmap:
4408         pci_iounmap(pdev, priv->hw_base);
4409  out_pci_release_regions:
4410         pci_set_drvdata(pdev, NULL);
4411         pci_release_regions(pdev);
4412  out_pci_disable_device:
4413         pci_disable_device(pdev);
4414  out_ieee80211_free_hw:
4415         iwl_free_traffic_mem(priv);
4416         ieee80211_free_hw(priv->hw);
4417  out:
4418         return err;
4419 }
4420
4421 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4422 {
4423         struct iwl_priv *priv = pci_get_drvdata(pdev);
4424         unsigned long flags;
4425
4426         if (!priv)
4427                 return;
4428
4429         wait_for_completion(&priv->_agn.firmware_loading_complete);
4430
4431         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4432
4433         iwl_dbgfs_unregister(priv);
4434         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4435
4436         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4437          * to be called and iwl_down since we are removing the device
4438          * we need to set STATUS_EXIT_PENDING bit.
4439          */
4440         set_bit(STATUS_EXIT_PENDING, &priv->status);
4441         if (priv->mac80211_registered) {
4442                 ieee80211_unregister_hw(priv->hw);
4443                 priv->mac80211_registered = 0;
4444         } else {
4445                 iwl_down(priv);
4446         }
4447
4448         /*
4449          * Make sure device is reset to low power before unloading driver.
4450          * This may be redundant with iwl_down(), but there are paths to
4451          * run iwl_down() without calling apm_ops.stop(), and there are
4452          * paths to avoid running iwl_down() at all before leaving driver.
4453          * This (inexpensive) call *makes sure* device is reset.
4454          */
4455         priv->cfg->ops->lib->apm_ops.stop(priv);
4456
4457         iwl_tt_exit(priv);
4458
4459         /* make sure we flush any pending irq or
4460          * tasklet for the driver
4461          */
4462         spin_lock_irqsave(&priv->lock, flags);
4463         iwl_disable_interrupts(priv);
4464         spin_unlock_irqrestore(&priv->lock, flags);
4465
4466         iwl_synchronize_irq(priv);
4467
4468         iwl_dealloc_ucode_pci(priv);
4469
4470         if (priv->rxq.bd)
4471                 iwlagn_rx_queue_free(priv, &priv->rxq);
4472         iwlagn_hw_txq_ctx_free(priv);
4473
4474         iwl_eeprom_free(priv);
4475
4476
4477         /*netif_stop_queue(dev); */
4478         flush_workqueue(priv->workqueue);
4479
4480         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4481          * priv->workqueue... so we can't take down the workqueue
4482          * until now... */
4483         destroy_workqueue(priv->workqueue);
4484         priv->workqueue = NULL;
4485         iwl_free_traffic_mem(priv);
4486
4487         free_irq(priv->pci_dev->irq, priv);
4488         pci_disable_msi(priv->pci_dev);
4489         pci_iounmap(pdev, priv->hw_base);
4490         pci_release_regions(pdev);
4491         pci_disable_device(pdev);
4492         pci_set_drvdata(pdev, NULL);
4493
4494         iwl_uninit_drv(priv);
4495
4496         iwl_free_isr_ict(priv);
4497
4498         if (priv->ibss_beacon)
4499                 dev_kfree_skb(priv->ibss_beacon);
4500
4501         ieee80211_free_hw(priv->hw);
4502 }
4503
4504
4505 /*****************************************************************************
4506  *
4507  * driver and module entry point
4508  *
4509  *****************************************************************************/
4510
4511 /* Hardware specific file defines the PCI IDs table for that hardware module */
4512 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
4513 #ifdef CONFIG_IWL4965
4514         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4515         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4516 #endif /* CONFIG_IWL4965 */
4517 #ifdef CONFIG_IWL5000
4518 /* 5100 Series WiFi */
4519         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
4520         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
4521         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
4522         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
4523         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
4524         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
4525         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
4526         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
4527         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
4528         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
4529         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
4530         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
4531         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
4532         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
4533         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
4534         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
4535         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
4536         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
4537         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
4538         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
4539         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
4540         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
4541         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
4542         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
4543
4544 /* 5300 Series WiFi */
4545         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
4546         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
4547         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
4548         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
4549         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
4550         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
4551         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
4552         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
4553         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
4554         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
4555         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
4556         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
4557
4558 /* 5350 Series WiFi/WiMax */
4559         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
4560         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
4561         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
4562
4563 /* 5150 Series Wifi/WiMax */
4564         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
4565         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
4566         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
4567         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
4568         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
4569         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
4570
4571         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
4572         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
4573         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
4574         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
4575
4576 /* 6x00 Series */
4577         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
4578         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
4579         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
4580         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
4581         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
4582         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
4583         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
4584         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
4585         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
4586         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
4587
4588 /* 6x00 Series Gen2a */
4589         {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg)},
4590         {IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg)},
4591         {IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg)},
4592         {IWL_PCI_DEVICE(0x0082, 0x1206, iwl6000g2a_2abg_cfg)},
4593         {IWL_PCI_DEVICE(0x0085, 0x1216, iwl6000g2a_2abg_cfg)},
4594         {IWL_PCI_DEVICE(0x0082, 0x1226, iwl6000g2a_2abg_cfg)},
4595         {IWL_PCI_DEVICE(0x0082, 0x1207, iwl6000g2a_2bg_cfg)},
4596         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2a_2agn_cfg)},
4597         {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6000g2a_2abg_cfg)},
4598         {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6000g2a_2bg_cfg)},
4599         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2a_2agn_cfg)},
4600         {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6000g2a_2abg_cfg)},
4601         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2a_2agn_cfg)},
4602         {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6000g2a_2abg_cfg)},
4603
4604 /* 6x00 Series Gen2b */
4605         {IWL_PCI_DEVICE(0x008F, 0x5105, iwl6000g2b_bgn_cfg)},
4606         {IWL_PCI_DEVICE(0x0090, 0x5115, iwl6000g2b_bgn_cfg)},
4607         {IWL_PCI_DEVICE(0x008F, 0x5125, iwl6000g2b_bgn_cfg)},
4608         {IWL_PCI_DEVICE(0x008F, 0x5107, iwl6000g2b_bg_cfg)},
4609         {IWL_PCI_DEVICE(0x008F, 0x5201, iwl6000g2b_2agn_cfg)},
4610         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4611         {IWL_PCI_DEVICE(0x008F, 0x5221, iwl6000g2b_2agn_cfg)},
4612         {IWL_PCI_DEVICE(0x008F, 0x5206, iwl6000g2b_2abg_cfg)},
4613         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4614         {IWL_PCI_DEVICE(0x008F, 0x5226, iwl6000g2b_2abg_cfg)},
4615         {IWL_PCI_DEVICE(0x008F, 0x5207, iwl6000g2b_2bg_cfg)},
4616         {IWL_PCI_DEVICE(0x008A, 0x5301, iwl6000g2b_bgn_cfg)},
4617         {IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg)},
4618         {IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg)},
4619         {IWL_PCI_DEVICE(0x008A, 0x5321, iwl6000g2b_bgn_cfg)},
4620         {IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg)},
4621         {IWL_PCI_DEVICE(0x008B, 0x5311, iwl6000g2b_bgn_cfg)},
4622         {IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg)},
4623         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4624         {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6000g2b_2bgn_cfg)},
4625         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4626         {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6000g2b_2agn_cfg)},
4627         {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6000g2b_2bgn_cfg)},
4628         {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6000g2b_2abg_cfg)},
4629         {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6000g2b_2bg_cfg)},
4630         {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6000g2b_2agn_cfg)},
4631         {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6000g2b_2bgn_cfg)},
4632         {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6000g2b_2abg_cfg)},
4633
4634 /* 6x50 WiFi/WiMax Series */
4635         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
4636         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
4637         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
4638         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
4639         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
4640         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
4641
4642 /* 6x50 WiFi/WiMax Series Gen2 */
4643         {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6050g2_bgn_cfg)},
4644         {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6050g2_bgn_cfg)},
4645         {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6050g2_bgn_cfg)},
4646         {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6050g2_bgn_cfg)},
4647         {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6050g2_bgn_cfg)},
4648         {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6050g2_bgn_cfg)},
4649
4650 /* 1000 Series WiFi */
4651         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
4652         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
4653         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
4654         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
4655         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
4656         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
4657         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4658         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4659         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4660         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4661         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4662         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4663 #endif /* CONFIG_IWL5000 */
4664
4665         {0}
4666 };
4667 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4668
4669 static struct pci_driver iwl_driver = {
4670         .name = DRV_NAME,
4671         .id_table = iwl_hw_card_ids,
4672         .probe = iwl_pci_probe,
4673         .remove = __devexit_p(iwl_pci_remove),
4674 #ifdef CONFIG_PM
4675         .suspend = iwl_pci_suspend,
4676         .resume = iwl_pci_resume,
4677 #endif
4678 };
4679
4680 static int __init iwl_init(void)
4681 {
4682
4683         int ret;
4684         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4685         pr_info(DRV_COPYRIGHT "\n");
4686
4687         ret = iwlagn_rate_control_register();
4688         if (ret) {
4689                 pr_err("Unable to register rate control algorithm: %d\n", ret);
4690                 return ret;
4691         }
4692
4693         ret = pci_register_driver(&iwl_driver);
4694         if (ret) {
4695                 pr_err("Unable to initialize PCI module\n");
4696                 goto error_register;
4697         }
4698
4699         return ret;
4700
4701 error_register:
4702         iwlagn_rate_control_unregister();
4703         return ret;
4704 }
4705
4706 static void __exit iwl_exit(void)
4707 {
4708         pci_unregister_driver(&iwl_driver);
4709         iwlagn_rate_control_unregister();
4710 }
4711
4712 module_exit(iwl_exit);
4713 module_init(iwl_init);
4714
4715 #ifdef CONFIG_IWLWIFI_DEBUG
4716 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
4717 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
4718 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4719 MODULE_PARM_DESC(debug, "debug output mask");
4720 #endif
4721
4722 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
4723 MODULE_PARM_DESC(swcrypto50,
4724                  "using crypto in software (default 0 [hardware]) (deprecated)");
4725 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4726 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4727 module_param_named(queues_num50,
4728                    iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4729 MODULE_PARM_DESC(queues_num50,
4730                  "number of hw queues in 50xx series (deprecated)");
4731 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4732 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4733 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4734 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
4735 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4736 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4737 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
4738                    int, S_IRUGO);
4739 MODULE_PARM_DESC(amsdu_size_8K50,
4740                  "enable 8K amsdu size in 50XX series (deprecated)");
4741 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4742                    int, S_IRUGO);
4743 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4744 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4745 MODULE_PARM_DESC(fw_restart50,
4746                  "restart firmware in case of error (deprecated)");
4747 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4748 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4749 module_param_named(
4750         disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
4751 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4752
4753 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4754                    S_IRUGO);
4755 MODULE_PARM_DESC(ucode_alternative,
4756                  "specify ucode alternative to use from ucode file");
4757
4758 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4759 MODULE_PARM_DESC(antenna_coupling,
4760                  "specify antenna coupling in dB (defualt: 0 dB)");
4761
4762 module_param_named(bt_ch_announce, iwlagn_bt_ch_announce, bool, S_IRUGO);
4763 MODULE_PARM_DESC(bt_ch_announce,
4764                  "Enable BT channel announcement mode (default: enable)");