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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 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-agn-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
  89 static int iwlagn_ant_coupling;
  90 static bool iwlagn_bt_ch_announce = 1;
  91
  92 void iwl_update_chain_flags(struct iwl_priv *priv)
  93 {
  94         struct iwl_rxon_context *ctx;
  95
  96         if (priv->cfg->ops->hcmd->set_rxon_chain) {
  97                 for_each_context(priv, ctx) {
  98                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
  99                         if (ctx->active.rx_chain != ctx->staging.rx_chain)
 100                                 iwlcore_commit_rxon(priv, ctx);
 101                 }
 102         }
 103 }
 104
 105 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 106 static void iwl_set_beacon_tim(struct iwl_priv *priv,
 107                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 108                                u8 *beacon, u32 frame_size)
 109 {
 110         u16 tim_idx;
 111         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 112
 113         /*
 114          * The index is relative to frame start but we start looking at the
 115          * variable-length part of the beacon.
 116          */
 117         tim_idx = mgmt->u.beacon.variable - beacon;
 118
 119         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 120         while ((tim_idx < (frame_size - 2)) &&
 121                         (beacon[tim_idx] != WLAN_EID_TIM))
 122                 tim_idx += beacon[tim_idx+1] + 2;
 123
 124         /* If TIM field was found, set variables */
 125         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 126                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 127                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 128         } else
 129                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 130 }
 131
 132 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 133 {
 134         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 135         struct iwl_host_cmd cmd = {
 136                 .id = REPLY_TX_BEACON,
 137                 .flags = CMD_SIZE_HUGE,
 138         };
 139         u32 frame_size;
 140         u32 rate_flags;
 141         u32 rate;
 142         int err;
 143
 144         /*
 145          * We have to set up the TX command, the TX Beacon command, and the
 146          * beacon contents.
 147          */
 148
 149         lockdep_assert_held(&priv->mutex);
 150
 151         if (!priv->beacon_ctx) {
 152                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 153                 return 0;
 154         }
 155
 156         if (WARN_ON(!priv->beacon_skb))
 157                 return -EINVAL;
 158
 159         /* Allocate beacon memory */
 160         tx_beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd) + priv->beacon_skb->len,
 161                                 GFP_KERNEL);
 162         if (!tx_beacon_cmd)
 163                 return -ENOMEM;
 164
 165         frame_size = priv->beacon_skb->len;
 166
 167         /* Set up TX beacon contents */
 168         memcpy(tx_beacon_cmd->frame, priv->beacon_skb->data, frame_size);
 169
 170         /* Set up TX command fields */
 171         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 172         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 173         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 174         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 175                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 176
 177         /* Set up TX beacon command fields */
 178         iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
 179                            frame_size);
 180
 181         /* Set up packet rate and flags */
 182         rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
 183         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 184                                               priv->hw_params.valid_tx_ant);
 185         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 186         if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
 187                 rate_flags |= RATE_MCS_CCK_MSK;
 188         tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
 189                         rate_flags);
 190
 191         /* Submit command */
 192         cmd.len = sizeof(*tx_beacon_cmd) + frame_size;
 193         cmd.data = tx_beacon_cmd;
 194
 195         err = iwl_send_cmd_sync(priv, &cmd);
 196
 197         /* Free temporary storage */
 198         kfree(tx_beacon_cmd);
 199
 200         return err;
 201 }
 202
 203 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
 204 {
 205         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 206
 207         dma_addr_t addr = get_unaligned_le32(&tb->lo);
 208         if (sizeof(dma_addr_t) > sizeof(u32))
 209                 addr |=
 210                 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
 211
 212         return addr;
 213 }
 214
 215 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
 216 {
 217         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 218
 219         return le16_to_cpu(tb->hi_n_len) >> 4;
 220 }
 221
 222 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
 223                                   dma_addr_t addr, u16 len)
 224 {
 225         struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 226         u16 hi_n_len = len << 4;
 227
 228         put_unaligned_le32(addr, &tb->lo);
 229         if (sizeof(dma_addr_t) > sizeof(u32))
 230                 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
 231
 232         tb->hi_n_len = cpu_to_le16(hi_n_len);
 233
 234         tfd->num_tbs = idx + 1;
 235 }
 236
 237 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
 238 {
 239         return tfd->num_tbs & 0x1f;
 240 }
 241
 242 /**
 243  * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
 244  * @priv - driver private data
 245  * @txq - tx queue
 246  *
 247  * Does NOT advance any TFD circular buffer read/write indexes
 248  * Does NOT free the TFD itself (which is within circular buffer)
 249  */
 250 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 251 {
 252         struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
 253         struct iwl_tfd *tfd;
 254         struct pci_dev *dev = priv->pci_dev;
 255         int index = txq->q.read_ptr;
 256         int i;
 257         int num_tbs;
 258
 259         tfd = &tfd_tmp[index];
 260
 261         /* Sanity check on number of chunks */
 262         num_tbs = iwl_tfd_get_num_tbs(tfd);
 263
 264         if (num_tbs >= IWL_NUM_OF_TBS) {
 265                 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
 266                 /* @todo issue fatal error, it is quite serious situation */
 267                 return;
 268         }
 269
 270         /* Unmap tx_cmd */
 271         if (num_tbs)
 272                 pci_unmap_single(dev,
 273                                 dma_unmap_addr(&txq->meta[index], mapping),
 274                                 dma_unmap_len(&txq->meta[index], len),
 275                                 PCI_DMA_BIDIRECTIONAL);
 276
 277         /* Unmap chunks, if any. */
 278         for (i = 1; i < num_tbs; i++)
 279                 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
 280                                 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
 281
 282         /* free SKB */
 283         if (txq->txb) {
 284                 struct sk_buff *skb;
 285
 286                 skb = txq->txb[txq->q.read_ptr].skb;
 287
 288                 /* can be called from irqs-disabled context */
 289                 if (skb) {
 290                         dev_kfree_skb_any(skb);
 291                         txq->txb[txq->q.read_ptr].skb = NULL;
 292                 }
 293         }
 294 }
 295
 296 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 297                                  struct iwl_tx_queue *txq,
 298                                  dma_addr_t addr, u16 len,
 299                                  u8 reset, u8 pad)
 300 {
 301         struct iwl_queue *q;
 302         struct iwl_tfd *tfd, *tfd_tmp;
 303         u32 num_tbs;
 304
 305         q = &txq->q;
 306         tfd_tmp = (struct iwl_tfd *)txq->tfds;
 307         tfd = &tfd_tmp[q->write_ptr];
 308
 309         if (reset)
 310                 memset(tfd, 0, sizeof(*tfd));
 311
 312         num_tbs = iwl_tfd_get_num_tbs(tfd);
 313
 314         /* Each TFD can point to a maximum 20 Tx buffers */
 315         if (num_tbs >= IWL_NUM_OF_TBS) {
 316                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 317                           IWL_NUM_OF_TBS);
 318                 return -EINVAL;
 319         }
 320
 321         if (WARN_ON(addr & ~DMA_BIT_MASK(36)))
 322                 return -EINVAL;
 323
 324         if (unlikely(addr & ~IWL_TX_DMA_MASK))
 325                 IWL_ERR(priv, "Unaligned address = %llx\n",
 326                           (unsigned long long)addr);
 327
 328         iwl_tfd_set_tb(tfd, num_tbs, addr, len);
 329
 330         return 0;
 331 }
 332
 333 /*
 334  * Tell nic where to find circular buffer of Tx Frame Descriptors for
 335  * given Tx queue, and enable the DMA channel used for that queue.
 336  *
 337  * supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
 338  * channels supported in hardware.
 339  */
 340 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 341                          struct iwl_tx_queue *txq)
 342 {
 343         int txq_id = txq->q.id;
 344
 345         /* Circular buffer (TFD queue in DRAM) physical base address */
 346         iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
 347                              txq->q.dma_addr >> 8);
 348
 349         return 0;
 350 }
 351
 352 static void iwl_bg_beacon_update(struct work_struct *work)
 353 {
 354         struct iwl_priv *priv =
 355                 container_of(work, struct iwl_priv, beacon_update);
 356         struct sk_buff *beacon;
 357
 358         mutex_lock(&priv->mutex);
 359         if (!priv->beacon_ctx) {
 360                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 361                 goto out;
 362         }
 363
 364         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 365                 /*
 366                  * The ucode will send beacon notifications even in
 367                  * IBSS mode, but we don't want to process them. But
 368                  * we need to defer the type check to here due to
 369                  * requiring locking around the beacon_ctx access.
 370                  */
 371                 goto out;
 372         }
 373
 374         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 375         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 376         if (!beacon) {
 377                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 378                 goto out;
 379         }
 380
 381         /* new beacon skb is allocated every time; dispose previous.*/
 382         dev_kfree_skb(priv->beacon_skb);
 383
 384         priv->beacon_skb = beacon;
 385
 386         iwlagn_send_beacon_cmd(priv);
 387  out:
 388         mutex_unlock(&priv->mutex);
 389 }
 390
 391 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 392 {
 393         struct iwl_priv *priv =
 394                 container_of(work, struct iwl_priv, bt_runtime_config);
 395
 396         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 397                 return;
 398
 399         /* dont send host command if rf-kill is on */
 400         if (!iwl_is_ready_rf(priv))
 401                 return;
 402         priv->cfg->ops->hcmd->send_bt_config(priv);
 403 }
 404
 405 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 406 {
 407         struct iwl_priv *priv =
 408                 container_of(work, struct iwl_priv, bt_full_concurrency);
 409         struct iwl_rxon_context *ctx;
 410
 411         mutex_lock(&priv->mutex);
 412
 413         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 414                 goto out;
 415
 416         /* dont send host command if rf-kill is on */
 417         if (!iwl_is_ready_rf(priv))
 418                 goto out;
 419
 420         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 421                        priv->bt_full_concurrent ?
 422                        "full concurrency" : "3-wire");
 423
 424         /*
 425          * LQ & RXON updated cmds must be sent before BT Config cmd
 426          * to avoid 3-wire collisions
 427          */
 428         for_each_context(priv, ctx) {
 429                 if (priv->cfg->ops->hcmd->set_rxon_chain)
 430                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
 431                 iwlcore_commit_rxon(priv, ctx);
 432         }
 433
 434         priv->cfg->ops->hcmd->send_bt_config(priv);
 435 out:
 436         mutex_unlock(&priv->mutex);
 437 }
 438
 439 /**
 440  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 441  *
 442  * This callback is provided in order to send a statistics request.
 443  *
 444  * This timer function is continually reset to execute within
 445  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 446  * was received.  We need to ensure we receive the statistics in order
 447  * to update the temperature used for calibrating the TXPOWER.
 448  */
 449 static void iwl_bg_statistics_periodic(unsigned long data)
 450 {
 451         struct iwl_priv *priv = (struct iwl_priv *)data;
 452
 453         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 454                 return;
 455
 456         /* dont send host command if rf-kill is on */
 457         if (!iwl_is_ready_rf(priv))
 458                 return;
 459
 460         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 461 }
 462
 463
 464 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 465                                         u32 start_idx, u32 num_events,
 466                                         u32 mode)
 467 {
 468         u32 i;
 469         u32 ptr;        /* SRAM byte address of log data */
 470         u32 ev, time, data; /* event log data */
 471         unsigned long reg_flags;
 472
 473         if (mode == 0)
 474                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 475         else
 476                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 477
 478         /* Make sure device is powered up for SRAM reads */
 479         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 480         if (iwl_grab_nic_access(priv)) {
 481                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 482                 return;
 483         }
 484
 485         /* Set starting address; reads will auto-increment */
 486         iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
 487         rmb();
 488
 489         /*
 490          * "time" is actually "data" for mode 0 (no timestamp).
 491          * place event id # at far right for easier visual parsing.
 492          */
 493         for (i = 0; i < num_events; i++) {
 494                 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 495                 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 496                 if (mode == 0) {
 497                         trace_iwlwifi_dev_ucode_cont_event(priv,
 498                                                         0, time, ev);
 499                 } else {
 500                         data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 501                         trace_iwlwifi_dev_ucode_cont_event(priv,
 502                                                 time, data, ev);
 503                 }
 504         }
 505         /* Allow device to power down */
 506         iwl_release_nic_access(priv);
 507         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 508 }
 509
 510 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 511 {
 512         u32 capacity;   /* event log capacity in # entries */
 513         u32 base;       /* SRAM byte address of event log header */
 514         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 515         u32 num_wraps;  /* # times uCode wrapped to top of log */
 516         u32 next_entry; /* index of next entry to be written by uCode */
 517
 518         base = priv->device_pointers.error_event_table;
 519         if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
 520                 capacity = iwl_read_targ_mem(priv, base);
 521                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 522                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 523                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 524         } else
 525                 return;
 526
 527         if (num_wraps == priv->event_log.num_wraps) {
 528                 iwl_print_cont_event_trace(priv,
 529                                        base, priv->event_log.next_entry,
 530                                        next_entry - priv->event_log.next_entry,
 531                                        mode);
 532                 priv->event_log.non_wraps_count++;
 533         } else {
 534                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 535                         priv->event_log.wraps_more_count++;
 536                 else
 537                         priv->event_log.wraps_once_count++;
 538                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 539                                 num_wraps - priv->event_log.num_wraps,
 540                                 next_entry, priv->event_log.next_entry);
 541                 if (next_entry < priv->event_log.next_entry) {
 542                         iwl_print_cont_event_trace(priv, base,
 543                                priv->event_log.next_entry,
 544                                capacity - priv->event_log.next_entry,
 545                                mode);
 546
 547                         iwl_print_cont_event_trace(priv, base, 0,
 548                                 next_entry, mode);
 549                 } else {
 550                         iwl_print_cont_event_trace(priv, base,
 551                                next_entry, capacity - next_entry,
 552                                mode);
 553
 554                         iwl_print_cont_event_trace(priv, base, 0,
 555                                 next_entry, mode);
 556                 }
 557         }
 558         priv->event_log.num_wraps = num_wraps;
 559         priv->event_log.next_entry = next_entry;
 560 }
 561
 562 /**
 563  * iwl_bg_ucode_trace - Timer callback to log ucode event
 564  *
 565  * The timer is continually set to execute every
 566  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 567  * this function is to perform continuous uCode event logging operation
 568  * if enabled
 569  */
 570 static void iwl_bg_ucode_trace(unsigned long data)
 571 {
 572         struct iwl_priv *priv = (struct iwl_priv *)data;
 573
 574         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 575                 return;
 576
 577         if (priv->event_log.ucode_trace) {
 578                 iwl_continuous_event_trace(priv);
 579                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 580                 mod_timer(&priv->ucode_trace,
 581                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 582         }
 583 }
 584
 585 static void iwl_bg_tx_flush(struct work_struct *work)
 586 {
 587         struct iwl_priv *priv =
 588                 container_of(work, struct iwl_priv, tx_flush);
 589
 590         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 591                 return;
 592
 593         /* do nothing if rf-kill is on */
 594         if (!iwl_is_ready_rf(priv))
 595                 return;
 596
 597         if (priv->cfg->ops->lib->txfifo_flush) {
 598                 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 599                 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 600         }
 601 }
 602
 603 /**
 604  * iwl_rx_handle - Main entry function for receiving responses from uCode
 605  *
 606  * Uses the priv->rx_handlers callback function array to invoke
 607  * the appropriate handlers, including command responses,
 608  * frame-received notifications, and other notifications.
 609  */
 610 static void iwl_rx_handle(struct iwl_priv *priv)
 611 {
 612         struct iwl_rx_mem_buffer *rxb;
 613         struct iwl_rx_packet *pkt;
 614         struct iwl_rx_queue *rxq = &priv->rxq;
 615         u32 r, i;
 616         int reclaim;
 617         unsigned long flags;
 618         u8 fill_rx = 0;
 619         u32 count = 8;
 620         int total_empty;
 621
 622         /* uCode's read index (stored in shared DRAM) indicates the last Rx
 623          * buffer that the driver may process (last buffer filled by ucode). */
 624         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
 625         i = rxq->read;
 626
 627         /* Rx interrupt, but nothing sent from uCode */
 628         if (i == r)
 629                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
 630
 631         /* calculate total frames need to be restock after handling RX */
 632         total_empty = r - rxq->write_actual;
 633         if (total_empty < 0)
 634                 total_empty += RX_QUEUE_SIZE;
 635
 636         if (total_empty > (RX_QUEUE_SIZE / 2))
 637                 fill_rx = 1;
 638
 639         while (i != r) {
 640                 int len;
 641
 642                 rxb = rxq->queue[i];
 643
 644                 /* If an RXB doesn't have a Rx queue slot associated with it,
 645                  * then a bug has been introduced in the queue refilling
 646                  * routines -- catch it here */
 647                 if (WARN_ON(rxb == NULL)) {
 648                         i = (i + 1) & RX_QUEUE_MASK;
 649                         continue;
 650                 }
 651
 652                 rxq->queue[i] = NULL;
 653
 654                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
 655                                PAGE_SIZE << priv->hw_params.rx_page_order,
 656                                PCI_DMA_FROMDEVICE);
 657                 pkt = rxb_addr(rxb);
 658
 659                 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
 660                 len += sizeof(u32); /* account for status word */
 661                 trace_iwlwifi_dev_rx(priv, pkt, len);
 662
 663                 /* Reclaim a command buffer only if this packet is a response
 664                  *   to a (driver-originated) command.
 665                  * If the packet (e.g. Rx frame) originated from uCode,
 666                  *   there is no command buffer to reclaim.
 667                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 668                  *   but apparently a few don't get set; catch them here. */
 669                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
 670                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
 671                         (pkt->hdr.cmd != REPLY_RX) &&
 672                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
 673                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
 674                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
 675                         (pkt->hdr.cmd != REPLY_TX);
 676
 677                 /*
 678                  * Do the notification wait before RX handlers so
 679                  * even if the RX handler consumes the RXB we have
 680                  * access to it in the notification wait entry.
 681                  */
 682                 if (!list_empty(&priv->_agn.notif_waits)) {
 683                         struct iwl_notification_wait *w;
 684
 685                         spin_lock(&priv->_agn.notif_wait_lock);
 686                         list_for_each_entry(w, &priv->_agn.notif_waits, list) {
 687                                 if (w->cmd == pkt->hdr.cmd) {
 688                                         w->triggered = true;
 689                                         if (w->fn)
 690                                                 w->fn(priv, pkt, w->fn_data);
 691                                 }
 692                         }
 693                         spin_unlock(&priv->_agn.notif_wait_lock);
 694
 695                         wake_up_all(&priv->_agn.notif_waitq);
 696                 }
 697                 if (priv->pre_rx_handler)
 698                         priv->pre_rx_handler(priv, rxb);
 699
 700                 /* Based on type of command response or notification,
 701                  *   handle those that need handling via function in
 702                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
 703                 if (priv->rx_handlers[pkt->hdr.cmd]) {
 704                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
 705                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
 706                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
 707                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
 708                 } else {
 709                         /* No handling needed */
 710                         IWL_DEBUG_RX(priv,
 711                                 "r %d i %d No handler needed for %s, 0x%02x\n",
 712                                 r, i, get_cmd_string(pkt->hdr.cmd),
 713                                 pkt->hdr.cmd);
 714                 }
 715
 716                 /*
 717                  * XXX: After here, we should always check rxb->page
 718                  * against NULL before touching it or its virtual
 719                  * memory (pkt). Because some rx_handler might have
 720                  * already taken or freed the pages.
 721                  */
 722
 723                 if (reclaim) {
 724                         /* Invoke any callbacks, transfer the buffer to caller,
 725                          * and fire off the (possibly) blocking iwl_send_cmd()
 726                          * as we reclaim the driver command queue */
 727                         if (rxb->page)
 728                                 iwl_tx_cmd_complete(priv, rxb);
 729                         else
 730                                 IWL_WARN(priv, "Claim null rxb?\n");
 731                 }
 732
 733                 /* Reuse the page if possible. For notification packets and
 734                  * SKBs that fail to Rx correctly, add them back into the
 735                  * rx_free list for reuse later. */
 736                 spin_lock_irqsave(&rxq->lock, flags);
 737                 if (rxb->page != NULL) {
 738                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
 739                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
 740                                 PCI_DMA_FROMDEVICE);
 741                         list_add_tail(&rxb->list, &rxq->rx_free);
 742                         rxq->free_count++;
 743                 } else
 744                         list_add_tail(&rxb->list, &rxq->rx_used);
 745
 746                 spin_unlock_irqrestore(&rxq->lock, flags);
 747
 748                 i = (i + 1) & RX_QUEUE_MASK;
 749                 /* If there are a lot of unused frames,
 750                  * restock the Rx queue so ucode wont assert. */
 751                 if (fill_rx) {
 752                         count++;
 753                         if (count >= 8) {
 754                                 rxq->read = i;
 755                                 iwlagn_rx_replenish_now(priv);
 756                                 count = 0;
 757                         }
 758                 }
 759         }
 760
 761         /* Backtrack one entry */
 762         rxq->read = i;
 763         if (fill_rx)
 764                 iwlagn_rx_replenish_now(priv);
 765         else
 766                 iwlagn_rx_queue_restock(priv);
 767 }
 768
 769 /* tasklet for iwlagn interrupt */
 770 static void iwl_irq_tasklet(struct iwl_priv *priv)
 771 {
 772         u32 inta = 0;
 773         u32 handled = 0;
 774         unsigned long flags;
 775         u32 i;
 776 #ifdef CONFIG_IWLWIFI_DEBUG
 777         u32 inta_mask;
 778 #endif
 779
 780         spin_lock_irqsave(&priv->lock, flags);
 781
 782         /* Ack/clear/reset pending uCode interrupts.
 783          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
 784          */
 785         /* There is a hardware bug in the interrupt mask function that some
 786          * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
 787          * they are disabled in the CSR_INT_MASK register. Furthermore the
 788          * ICT interrupt handling mechanism has another bug that might cause
 789          * these unmasked interrupts fail to be detected. We workaround the
 790          * hardware bugs here by ACKing all the possible interrupts so that
 791          * interrupt coalescing can still be achieved.
 792          */
 793         iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
 794
 795         inta = priv->_agn.inta;
 796
 797 #ifdef CONFIG_IWLWIFI_DEBUG
 798         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
 799                 /* just for debug */
 800                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
 801                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
 802                                 inta, inta_mask);
 803         }
 804 #endif
 805
 806         spin_unlock_irqrestore(&priv->lock, flags);
 807
 808         /* saved interrupt in inta variable now we can reset priv->_agn.inta */
 809         priv->_agn.inta = 0;
 810
 811         /* Now service all interrupt bits discovered above. */
 812         if (inta & CSR_INT_BIT_HW_ERR) {
 813                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
 814
 815                 /* Tell the device to stop sending interrupts */
 816                 iwl_disable_interrupts(priv);
 817
 818                 priv->isr_stats.hw++;
 819                 iwl_irq_handle_error(priv);
 820
 821                 handled |= CSR_INT_BIT_HW_ERR;
 822
 823                 return;
 824         }
 825
 826 #ifdef CONFIG_IWLWIFI_DEBUG
 827         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
 828                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
 829                 if (inta & CSR_INT_BIT_SCD) {
 830                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
 831                                       "the frame/frames.\n");
 832                         priv->isr_stats.sch++;
 833                 }
 834
 835                 /* Alive notification via Rx interrupt will do the real work */
 836                 if (inta & CSR_INT_BIT_ALIVE) {
 837                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
 838                         priv->isr_stats.alive++;
 839                 }
 840         }
 841 #endif
 842         /* Safely ignore these bits for debug checks below */
 843         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
 844
 845         /* HW RF KILL switch toggled */
 846         if (inta & CSR_INT_BIT_RF_KILL) {
 847                 int hw_rf_kill = 0;
 848                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
 849                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
 850                         hw_rf_kill = 1;
 851
 852                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
 853                                 hw_rf_kill ? "disable radio" : "enable radio");
 854
 855                 priv->isr_stats.rfkill++;
 856
 857                 /* driver only loads ucode once setting the interface up.
 858                  * the driver allows loading the ucode even if the radio
 859                  * is killed. Hence update the killswitch state here. The
 860                  * rfkill handler will care about restarting if needed.
 861                  */
 862                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
 863                         if (hw_rf_kill)
 864                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
 865                         else
 866                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
 867                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
 868                 }
 869
 870                 handled |= CSR_INT_BIT_RF_KILL;
 871         }
 872
 873         /* Chip got too hot and stopped itself */
 874         if (inta & CSR_INT_BIT_CT_KILL) {
 875                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
 876                 priv->isr_stats.ctkill++;
 877                 handled |= CSR_INT_BIT_CT_KILL;
 878         }
 879
 880         /* Error detected by uCode */
 881         if (inta & CSR_INT_BIT_SW_ERR) {
 882                 IWL_ERR(priv, "Microcode SW error detected. "
 883                         " Restarting 0x%X.\n", inta);
 884                 priv->isr_stats.sw++;
 885                 iwl_irq_handle_error(priv);
 886                 handled |= CSR_INT_BIT_SW_ERR;
 887         }
 888
 889         /* uCode wakes up after power-down sleep */
 890         if (inta & CSR_INT_BIT_WAKEUP) {
 891                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
 892                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
 893                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
 894                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
 895
 896                 priv->isr_stats.wakeup++;
 897
 898                 handled |= CSR_INT_BIT_WAKEUP;
 899         }
 900
 901         /* All uCode command responses, including Tx command responses,
 902          * Rx "responses" (frame-received notification), and other
 903          * notifications from uCode come through here*/
 904         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
 905                         CSR_INT_BIT_RX_PERIODIC)) {
 906                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
 907                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
 908                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
 909                         iwl_write32(priv, CSR_FH_INT_STATUS,
 910                                         CSR_FH_INT_RX_MASK);
 911                 }
 912                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
 913                         handled |= CSR_INT_BIT_RX_PERIODIC;
 914                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
 915                 }
 916                 /* Sending RX interrupt require many steps to be done in the
 917                  * the device:
 918                  * 1- write interrupt to current index in ICT table.
 919                  * 2- dma RX frame.
 920                  * 3- update RX shared data to indicate last write index.
 921                  * 4- send interrupt.
 922                  * This could lead to RX race, driver could receive RX interrupt
 923                  * but the shared data changes does not reflect this;
 924                  * periodic interrupt will detect any dangling Rx activity.
 925                  */
 926
 927                 /* Disable periodic interrupt; we use it as just a one-shot. */
 928                 iwl_write8(priv, CSR_INT_PERIODIC_REG,
 929                             CSR_INT_PERIODIC_DIS);
 930                 iwl_rx_handle(priv);
 931
 932                 /*
 933                  * Enable periodic interrupt in 8 msec only if we received
 934                  * real RX interrupt (instead of just periodic int), to catch
 935                  * any dangling Rx interrupt.  If it was just the periodic
 936                  * interrupt, there was no dangling Rx activity, and no need
 937                  * to extend the periodic interrupt; one-shot is enough.
 938                  */
 939                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
 940                         iwl_write8(priv, CSR_INT_PERIODIC_REG,
 941                                     CSR_INT_PERIODIC_ENA);
 942
 943                 priv->isr_stats.rx++;
 944         }
 945
 946         /* This "Tx" DMA channel is used only for loading uCode */
 947         if (inta & CSR_INT_BIT_FH_TX) {
 948                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR_FH_INT_TX_MASK);
 949                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
 950                 priv->isr_stats.tx++;
 951                 handled |= CSR_INT_BIT_FH_TX;
 952                 /* Wake up uCode load routine, now that load is complete */
 953                 priv->ucode_write_complete = 1;
 954                 wake_up_interruptible(&priv->wait_command_queue);
 955         }
 956
 957         if (inta & ~handled) {
 958                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
 959                 priv->isr_stats.unhandled++;
 960         }
 961
 962         if (inta & ~(priv->inta_mask)) {
 963                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
 964                          inta & ~priv->inta_mask);
 965         }
 966
 967         /* Re-enable all interrupts */
 968         /* only Re-enable if disabled by irq */
 969         if (test_bit(STATUS_INT_ENABLED, &priv->status))
 970                 iwl_enable_interrupts(priv);
 971         /* Re-enable RF_KILL if it occurred */
 972         else if (handled & CSR_INT_BIT_RF_KILL)
 973                 iwl_enable_rfkill_int(priv);
 974 }
 975
 976 /*****************************************************************************
 977  *
 978  * sysfs attributes
 979  *
 980  *****************************************************************************/
 981
 982 #ifdef CONFIG_IWLWIFI_DEBUG
 983
 984 /*
 985  * The following adds a new attribute to the sysfs representation
 986  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
 987  * used for controlling the debug level.
 988  *
 989  * See the level definitions in iwl for details.
 990  *
 991  * The debug_level being managed using sysfs below is a per device debug
 992  * level that is used instead of the global debug level if it (the per
 993  * device debug level) is set.
 994  */
 995 static ssize_t show_debug_level(struct device *d,
 996                                 struct device_attribute *attr, char *buf)
 997 {
 998         struct iwl_priv *priv = dev_get_drvdata(d);
 999         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1000 }
1001 static ssize_t store_debug_level(struct device *d,
1002                                 struct device_attribute *attr,
1003                                  const char *buf, size_t count)
1004 {
1005         struct iwl_priv *priv = dev_get_drvdata(d);
1006         unsigned long val;
1007         int ret;
1008
1009         ret = strict_strtoul(buf, 0, &val);
1010         if (ret)
1011                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1012         else {
1013                 priv->debug_level = val;
1014                 if (iwl_alloc_traffic_mem(priv))
1015                         IWL_ERR(priv,
1016                                 "Not enough memory to generate traffic log\n");
1017         }
1018         return strnlen(buf, count);
1019 }
1020
1021 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1022                         show_debug_level, store_debug_level);
1023
1024
1025 #endif /* CONFIG_IWLWIFI_DEBUG */
1026
1027
1028 static ssize_t show_temperature(struct device *d,
1029                                 struct device_attribute *attr, char *buf)
1030 {
1031         struct iwl_priv *priv = dev_get_drvdata(d);
1032
1033         if (!iwl_is_alive(priv))
1034                 return -EAGAIN;
1035
1036         return sprintf(buf, "%d\n", priv->temperature);
1037 }
1038
1039 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1040
1041 static ssize_t show_tx_power(struct device *d,
1042                              struct device_attribute *attr, char *buf)
1043 {
1044         struct iwl_priv *priv = dev_get_drvdata(d);
1045
1046         if (!iwl_is_ready_rf(priv))
1047                 return sprintf(buf, "off\n");
1048         else
1049                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1050 }
1051
1052 static ssize_t store_tx_power(struct device *d,
1053                               struct device_attribute *attr,
1054                               const char *buf, size_t count)
1055 {
1056         struct iwl_priv *priv = dev_get_drvdata(d);
1057         unsigned long val;
1058         int ret;
1059
1060         ret = strict_strtoul(buf, 10, &val);
1061         if (ret)
1062                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1063         else {
1064                 ret = iwl_set_tx_power(priv, val, false);
1065                 if (ret)
1066                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1067                                 ret);
1068                 else
1069                         ret = count;
1070         }
1071         return ret;
1072 }
1073
1074 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1075
1076 static struct attribute *iwl_sysfs_entries[] = {
1077         &dev_attr_temperature.attr,
1078         &dev_attr_tx_power.attr,
1079 #ifdef CONFIG_IWLWIFI_DEBUG
1080         &dev_attr_debug_level.attr,
1081 #endif
1082         NULL
1083 };
1084
1085 static struct attribute_group iwl_attribute_group = {
1086         .name = NULL,           /* put in device directory */
1087         .attrs = iwl_sysfs_entries,
1088 };
1089
1090 /******************************************************************************
1091  *
1092  * uCode download functions
1093  *
1094  ******************************************************************************/
1095
1096 static void iwl_free_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
1097 {
1098         if (desc->v_addr)
1099                 dma_free_coherent(&pci_dev->dev, desc->len,
1100                                   desc->v_addr, desc->p_addr);
1101         desc->v_addr = NULL;
1102         desc->len = 0;
1103 }
1104
1105 static void iwl_free_fw_img(struct pci_dev *pci_dev, struct fw_img *img)
1106 {
1107         iwl_free_fw_desc(pci_dev, &img->code);
1108         iwl_free_fw_desc(pci_dev, &img->data);
1109 }
1110
1111 static int iwl_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc,
1112                              const void *data, size_t len)
1113 {
1114         if (!len) {
1115                 desc->v_addr = NULL;
1116                 return -EINVAL;
1117         }
1118
1119         desc->v_addr = dma_alloc_coherent(&pci_dev->dev, len,
1120                                           &desc->p_addr, GFP_KERNEL);
1121         if (!desc->v_addr)
1122                 return -ENOMEM;
1123         desc->len = len;
1124         memcpy(desc->v_addr, data, len);
1125         return 0;
1126 }
1127
1128 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1129 {
1130         iwl_free_fw_img(priv->pci_dev, &priv->ucode_rt);
1131         iwl_free_fw_img(priv->pci_dev, &priv->ucode_init);
1132 }
1133
1134 struct iwlagn_ucode_capabilities {
1135         u32 max_probe_length;
1136         u32 standard_phy_calibration_size;
1137         u32 flags;
1138 };
1139
1140 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1141 static int iwl_mac_setup_register(struct iwl_priv *priv,
1142                                   struct iwlagn_ucode_capabilities *capa);
1143
1144 #define UCODE_EXPERIMENTAL_INDEX        100
1145 #define UCODE_EXPERIMENTAL_TAG          "exp"
1146
1147 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1148 {
1149         const char *name_pre = priv->cfg->fw_name_pre;
1150         char tag[8];
1151
1152         if (first) {
1153 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1154                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1155                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1156         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1157 #endif
1158                 priv->fw_index = priv->cfg->ucode_api_max;
1159                 sprintf(tag, "%d", priv->fw_index);
1160         } else {
1161                 priv->fw_index--;
1162                 sprintf(tag, "%d", priv->fw_index);
1163         }
1164
1165         if (priv->fw_index < priv->cfg->ucode_api_min) {
1166                 IWL_ERR(priv, "no suitable firmware found!\n");
1167                 return -ENOENT;
1168         }
1169
1170         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1171
1172         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1173                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1174                                 ? "EXPERIMENTAL " : "",
1175                        priv->firmware_name);
1176
1177         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1178                                        &priv->pci_dev->dev, GFP_KERNEL, priv,
1179                                        iwl_ucode_callback);
1180 }
1181
1182 struct iwlagn_firmware_pieces {
1183         const void *inst, *data, *init, *init_data;
1184         size_t inst_size, data_size, init_size, init_data_size;
1185
1186         u32 build;
1187
1188         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1189         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1190 };
1191
1192 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1193                                        const struct firmware *ucode_raw,
1194                                        struct iwlagn_firmware_pieces *pieces)
1195 {
1196         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1197         u32 api_ver, hdr_size;
1198         const u8 *src;
1199
1200         priv->ucode_ver = le32_to_cpu(ucode->ver);
1201         api_ver = IWL_UCODE_API(priv->ucode_ver);
1202
1203         switch (api_ver) {
1204         default:
1205                 hdr_size = 28;
1206                 if (ucode_raw->size < hdr_size) {
1207                         IWL_ERR(priv, "File size too small!\n");
1208                         return -EINVAL;
1209                 }
1210                 pieces->build = le32_to_cpu(ucode->u.v2.build);
1211                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1212                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1213                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1214                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1215                 src = ucode->u.v2.data;
1216                 break;
1217         case 0:
1218         case 1:
1219         case 2:
1220                 hdr_size = 24;
1221                 if (ucode_raw->size < hdr_size) {
1222                         IWL_ERR(priv, "File size too small!\n");
1223                         return -EINVAL;
1224                 }
1225                 pieces->build = 0;
1226                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1227                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1228                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1229                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1230                 src = ucode->u.v1.data;
1231                 break;
1232         }
1233
1234         /* Verify size of file vs. image size info in file's header */
1235         if (ucode_raw->size != hdr_size + pieces->inst_size +
1236                                 pieces->data_size + pieces->init_size +
1237                                 pieces->init_data_size) {
1238
1239                 IWL_ERR(priv,
1240                         "uCode file size %d does not match expected size\n",
1241                         (int)ucode_raw->size);
1242                 return -EINVAL;
1243         }
1244
1245         pieces->inst = src;
1246         src += pieces->inst_size;
1247         pieces->data = src;
1248         src += pieces->data_size;
1249         pieces->init = src;
1250         src += pieces->init_size;
1251         pieces->init_data = src;
1252         src += pieces->init_data_size;
1253
1254         return 0;
1255 }
1256
1257 static int iwlagn_wanted_ucode_alternative = 1;
1258
1259 static int iwlagn_load_firmware(struct iwl_priv *priv,
1260                                 const struct firmware *ucode_raw,
1261                                 struct iwlagn_firmware_pieces *pieces,
1262                                 struct iwlagn_ucode_capabilities *capa)
1263 {
1264         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1265         struct iwl_ucode_tlv *tlv;
1266         size_t len = ucode_raw->size;
1267         const u8 *data;
1268         int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1269         u64 alternatives;
1270         u32 tlv_len;
1271         enum iwl_ucode_tlv_type tlv_type;
1272         const u8 *tlv_data;
1273
1274         if (len < sizeof(*ucode)) {
1275                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1276                 return -EINVAL;
1277         }
1278
1279         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1280                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1281                         le32_to_cpu(ucode->magic));
1282                 return -EINVAL;
1283         }
1284
1285         /*
1286          * Check which alternatives are present, and "downgrade"
1287          * when the chosen alternative is not present, warning
1288          * the user when that happens. Some files may not have
1289          * any alternatives, so don't warn in that case.
1290          */
1291         alternatives = le64_to_cpu(ucode->alternatives);
1292         tmp = wanted_alternative;
1293         if (wanted_alternative > 63)
1294                 wanted_alternative = 63;
1295         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1296                 wanted_alternative--;
1297         if (wanted_alternative && wanted_alternative != tmp)
1298                 IWL_WARN(priv,
1299                          "uCode alternative %d not available, choosing %d\n",
1300                          tmp, wanted_alternative);
1301
1302         priv->ucode_ver = le32_to_cpu(ucode->ver);
1303         pieces->build = le32_to_cpu(ucode->build);
1304         data = ucode->data;
1305
1306         len -= sizeof(*ucode);
1307
1308         while (len >= sizeof(*tlv)) {
1309                 u16 tlv_alt;
1310
1311                 len -= sizeof(*tlv);
1312                 tlv = (void *)data;
1313
1314                 tlv_len = le32_to_cpu(tlv->length);
1315                 tlv_type = le16_to_cpu(tlv->type);
1316                 tlv_alt = le16_to_cpu(tlv->alternative);
1317                 tlv_data = tlv->data;
1318
1319                 if (len < tlv_len) {
1320                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1321                                 len, tlv_len);
1322                         return -EINVAL;
1323                 }
1324                 len -= ALIGN(tlv_len, 4);
1325                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1326
1327                 /*
1328                  * Alternative 0 is always valid.
1329                  *
1330                  * Skip alternative TLVs that are not selected.
1331                  */
1332                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1333                         continue;
1334
1335                 switch (tlv_type) {
1336                 case IWL_UCODE_TLV_INST:
1337                         pieces->inst = tlv_data;
1338                         pieces->inst_size = tlv_len;
1339                         break;
1340                 case IWL_UCODE_TLV_DATA:
1341                         pieces->data = tlv_data;
1342                         pieces->data_size = tlv_len;
1343                         break;
1344                 case IWL_UCODE_TLV_INIT:
1345                         pieces->init = tlv_data;
1346                         pieces->init_size = tlv_len;
1347                         break;
1348                 case IWL_UCODE_TLV_INIT_DATA:
1349                         pieces->init_data = tlv_data;
1350                         pieces->init_data_size = tlv_len;
1351                         break;
1352                 case IWL_UCODE_TLV_BOOT:
1353                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
1354                         break;
1355                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1356                         if (tlv_len != sizeof(u32))
1357                                 goto invalid_tlv_len;
1358                         capa->max_probe_length =
1359                                         le32_to_cpup((__le32 *)tlv_data);
1360                         break;
1361                 case IWL_UCODE_TLV_PAN:
1362                         if (tlv_len)
1363                                 goto invalid_tlv_len;
1364                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
1365                         break;
1366                 case IWL_UCODE_TLV_FLAGS:
1367                         /* must be at least one u32 */
1368                         if (tlv_len < sizeof(u32))
1369                                 goto invalid_tlv_len;
1370                         /* and a proper number of u32s */
1371                         if (tlv_len % sizeof(u32))
1372                                 goto invalid_tlv_len;
1373                         /*
1374                          * This driver only reads the first u32 as
1375                          * right now no more features are defined,
1376                          * if that changes then either the driver
1377                          * will not work with the new firmware, or
1378                          * it'll not take advantage of new features.
1379                          */
1380                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
1381                         break;
1382                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1383                         if (tlv_len != sizeof(u32))
1384                                 goto invalid_tlv_len;
1385                         pieces->init_evtlog_ptr =
1386                                         le32_to_cpup((__le32 *)tlv_data);
1387                         break;
1388                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1389                         if (tlv_len != sizeof(u32))
1390                                 goto invalid_tlv_len;
1391                         pieces->init_evtlog_size =
1392                                         le32_to_cpup((__le32 *)tlv_data);
1393                         break;
1394                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1395                         if (tlv_len != sizeof(u32))
1396                                 goto invalid_tlv_len;
1397                         pieces->init_errlog_ptr =
1398                                         le32_to_cpup((__le32 *)tlv_data);
1399                         break;
1400                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1401                         if (tlv_len != sizeof(u32))
1402                                 goto invalid_tlv_len;
1403                         pieces->inst_evtlog_ptr =
1404                                         le32_to_cpup((__le32 *)tlv_data);
1405                         break;
1406                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
1407                         if (tlv_len != sizeof(u32))
1408                                 goto invalid_tlv_len;
1409                         pieces->inst_evtlog_size =
1410                                         le32_to_cpup((__le32 *)tlv_data);
1411                         break;
1412                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
1413                         if (tlv_len != sizeof(u32))
1414                                 goto invalid_tlv_len;
1415                         pieces->inst_errlog_ptr =
1416                                         le32_to_cpup((__le32 *)tlv_data);
1417                         break;
1418                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
1419                         if (tlv_len)
1420                                 goto invalid_tlv_len;
1421                         priv->enhance_sensitivity_table = true;
1422                         break;
1423                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
1424                         if (tlv_len != sizeof(u32))
1425                                 goto invalid_tlv_len;
1426                         capa->standard_phy_calibration_size =
1427                                         le32_to_cpup((__le32 *)tlv_data);
1428                         break;
1429                 default:
1430                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
1431                         break;
1432                 }
1433         }
1434
1435         if (len) {
1436                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1437                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1438                 return -EINVAL;
1439         }
1440
1441         return 0;
1442
1443  invalid_tlv_len:
1444         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1445         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1446
1447         return -EINVAL;
1448 }
1449
1450 /**
1451  * iwl_ucode_callback - callback when firmware was loaded
1452  *
1453  * If loaded successfully, copies the firmware into buffers
1454  * for the card to fetch (via DMA).
1455  */
1456 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1457 {
1458         struct iwl_priv *priv = context;
1459         struct iwl_ucode_header *ucode;
1460         int err;
1461         struct iwlagn_firmware_pieces pieces;
1462         const unsigned int api_max = priv->cfg->ucode_api_max;
1463         const unsigned int api_min = priv->cfg->ucode_api_min;
1464         u32 api_ver;
1465         char buildstr[25];
1466         u32 build;
1467         struct iwlagn_ucode_capabilities ucode_capa = {
1468                 .max_probe_length = 200,
1469                 .standard_phy_calibration_size =
1470                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1471         };
1472
1473         memset(&pieces, 0, sizeof(pieces));
1474
1475         if (!ucode_raw) {
1476                 if (priv->fw_index <= priv->cfg->ucode_api_max)
1477                         IWL_ERR(priv,
1478                                 "request for firmware file '%s' failed.\n",
1479                                 priv->firmware_name);
1480                 goto try_again;
1481         }
1482
1483         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1484                        priv->firmware_name, ucode_raw->size);
1485
1486         /* Make sure that we got at least the API version number */
1487         if (ucode_raw->size < 4) {
1488                 IWL_ERR(priv, "File size way too small!\n");
1489                 goto try_again;
1490         }
1491
1492         /* Data from ucode file:  header followed by uCode images */
1493         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1494
1495         if (ucode->ver)
1496                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1497         else
1498                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1499                                            &ucode_capa);
1500
1501         if (err)
1502                 goto try_again;
1503
1504         api_ver = IWL_UCODE_API(priv->ucode_ver);
1505         build = pieces.build;
1506
1507         /*
1508          * api_ver should match the api version forming part of the
1509          * firmware filename ... but we don't check for that and only rely
1510          * on the API version read from firmware header from here on forward
1511          */
1512         /* no api version check required for experimental uCode */
1513         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1514                 if (api_ver < api_min || api_ver > api_max) {
1515                         IWL_ERR(priv,
1516                                 "Driver unable to support your firmware API. "
1517                                 "Driver supports v%u, firmware is v%u.\n",
1518                                 api_max, api_ver);
1519                         goto try_again;
1520                 }
1521
1522                 if (api_ver != api_max)
1523                         IWL_ERR(priv,
1524                                 "Firmware has old API version. Expected v%u, "
1525                                 "got v%u. New firmware can be obtained "
1526                                 "from http://www.intellinuxwireless.org.\n",
1527                                 api_max, api_ver);
1528         }
1529
1530         if (build)
1531                 sprintf(buildstr, " build %u%s", build,
1532                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1533                                 ? " (EXP)" : "");
1534         else
1535                 buildstr[0] = '\0';
1536
1537         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1538                  IWL_UCODE_MAJOR(priv->ucode_ver),
1539                  IWL_UCODE_MINOR(priv->ucode_ver),
1540                  IWL_UCODE_API(priv->ucode_ver),
1541                  IWL_UCODE_SERIAL(priv->ucode_ver),
1542                  buildstr);
1543
1544         snprintf(priv->hw->wiphy->fw_version,
1545                  sizeof(priv->hw->wiphy->fw_version),
1546                  "%u.%u.%u.%u%s",
1547                  IWL_UCODE_MAJOR(priv->ucode_ver),
1548                  IWL_UCODE_MINOR(priv->ucode_ver),
1549                  IWL_UCODE_API(priv->ucode_ver),
1550                  IWL_UCODE_SERIAL(priv->ucode_ver),
1551                  buildstr);
1552
1553         /*
1554          * For any of the failures below (before allocating pci memory)
1555          * we will try to load a version with a smaller API -- maybe the
1556          * user just got a corrupted version of the latest API.
1557          */
1558
1559         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1560                        priv->ucode_ver);
1561         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1562                        pieces.inst_size);
1563         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1564                        pieces.data_size);
1565         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1566                        pieces.init_size);
1567         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1568                        pieces.init_data_size);
1569
1570         /* Verify that uCode images will fit in card's SRAM */
1571         if (pieces.inst_size > priv->hw_params.max_inst_size) {
1572                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1573                         pieces.inst_size);
1574                 goto try_again;
1575         }
1576
1577         if (pieces.data_size > priv->hw_params.max_data_size) {
1578                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1579                         pieces.data_size);
1580                 goto try_again;
1581         }
1582
1583         if (pieces.init_size > priv->hw_params.max_inst_size) {
1584                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1585                         pieces.init_size);
1586                 goto try_again;
1587         }
1588
1589         if (pieces.init_data_size > priv->hw_params.max_data_size) {
1590                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1591                         pieces.init_data_size);
1592                 goto try_again;
1593         }
1594
1595         /* Allocate ucode buffers for card's bus-master loading ... */
1596
1597         /* Runtime instructions and 2 copies of data:
1598          * 1) unmodified from disk
1599          * 2) backup cache for save/restore during power-downs */
1600         if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_rt.code,
1601                               pieces.inst, pieces.inst_size))
1602                 goto err_pci_alloc;
1603         if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_rt.data,
1604                               pieces.data, pieces.data_size))
1605                 goto err_pci_alloc;
1606
1607         /* Initialization instructions and data */
1608         if (pieces.init_size && pieces.init_data_size) {
1609                 if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init.code,
1610                                       pieces.init, pieces.init_size))
1611                         goto err_pci_alloc;
1612                 if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init.data,
1613                                       pieces.init_data, pieces.init_data_size))
1614                         goto err_pci_alloc;
1615         }
1616
1617         /* Now that we can no longer fail, copy information */
1618
1619         /*
1620          * The (size - 16) / 12 formula is based on the information recorded
1621          * for each event, which is of mode 1 (including timestamp) for all
1622          * new microcodes that include this information.
1623          */
1624         priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
1625         if (pieces.init_evtlog_size)
1626                 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1627         else
1628                 priv->_agn.init_evtlog_size =
1629                         priv->cfg->base_params->max_event_log_size;
1630         priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
1631         priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1632         if (pieces.inst_evtlog_size)
1633                 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1634         else
1635                 priv->_agn.inst_evtlog_size =
1636                         priv->cfg->base_params->max_event_log_size;
1637         priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
1638
1639         priv->new_scan_threshold_behaviour =
1640                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1641
1642         if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1643                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
1644                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1645         } else
1646                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1647
1648         if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
1649                 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1650         else
1651                 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1652
1653         /*
1654          * figure out the offset of chain noise reset and gain commands
1655          * base on the size of standard phy calibration commands table size
1656          */
1657         if (ucode_capa.standard_phy_calibration_size >
1658             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1659                 ucode_capa.standard_phy_calibration_size =
1660                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1661
1662         priv->_agn.phy_calib_chain_noise_reset_cmd =
1663                 ucode_capa.standard_phy_calibration_size;
1664         priv->_agn.phy_calib_chain_noise_gain_cmd =
1665                 ucode_capa.standard_phy_calibration_size + 1;
1666
1667         /**************************************************
1668          * This is still part of probe() in a sense...
1669          *
1670          * 9. Setup and register with mac80211 and debugfs
1671          **************************************************/
1672         err = iwl_mac_setup_register(priv, &ucode_capa);
1673         if (err)
1674                 goto out_unbind;
1675
1676         err = iwl_dbgfs_register(priv, DRV_NAME);
1677         if (err)
1678                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1679
1680         err = sysfs_create_group(&priv->pci_dev->dev.kobj,
1681                                         &iwl_attribute_group);
1682         if (err) {
1683                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1684                 goto out_unbind;
1685         }
1686
1687         /* We have our copies now, allow OS release its copies */
1688         release_firmware(ucode_raw);
1689         complete(&priv->_agn.firmware_loading_complete);
1690         return;
1691
1692  try_again:
1693         /* try next, if any */
1694         if (iwl_request_firmware(priv, false))
1695                 goto out_unbind;
1696         release_firmware(ucode_raw);
1697         return;
1698
1699  err_pci_alloc:
1700         IWL_ERR(priv, "failed to allocate pci memory\n");
1701         iwl_dealloc_ucode_pci(priv);
1702  out_unbind:
1703         complete(&priv->_agn.firmware_loading_complete);
1704         device_release_driver(&priv->pci_dev->dev);
1705         release_firmware(ucode_raw);
1706 }
1707
1708 static const char *desc_lookup_text[] = {
1709         "OK",
1710         "FAIL",
1711         "BAD_PARAM",
1712         "BAD_CHECKSUM",
1713         "NMI_INTERRUPT_WDG",
1714         "SYSASSERT",
1715         "FATAL_ERROR",
1716         "BAD_COMMAND",
1717         "HW_ERROR_TUNE_LOCK",
1718         "HW_ERROR_TEMPERATURE",
1719         "ILLEGAL_CHAN_FREQ",
1720         "VCC_NOT_STABLE",
1721         "FH_ERROR",
1722         "NMI_INTERRUPT_HOST",
1723         "NMI_INTERRUPT_ACTION_PT",
1724         "NMI_INTERRUPT_UNKNOWN",
1725         "UCODE_VERSION_MISMATCH",
1726         "HW_ERROR_ABS_LOCK",
1727         "HW_ERROR_CAL_LOCK_FAIL",
1728         "NMI_INTERRUPT_INST_ACTION_PT",
1729         "NMI_INTERRUPT_DATA_ACTION_PT",
1730         "NMI_TRM_HW_ER",
1731         "NMI_INTERRUPT_TRM",
1732         "NMI_INTERRUPT_BREAK_POINT"
1733         "DEBUG_0",
1734         "DEBUG_1",
1735         "DEBUG_2",
1736         "DEBUG_3",
1737 };
1738
1739 static struct { char *name; u8 num; } advanced_lookup[] = {
1740         { "NMI_INTERRUPT_WDG", 0x34 },
1741         { "SYSASSERT", 0x35 },
1742         { "UCODE_VERSION_MISMATCH", 0x37 },
1743         { "BAD_COMMAND", 0x38 },
1744         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1745         { "FATAL_ERROR", 0x3D },
1746         { "NMI_TRM_HW_ERR", 0x46 },
1747         { "NMI_INTERRUPT_TRM", 0x4C },
1748         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1749         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1750         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1751         { "NMI_INTERRUPT_HOST", 0x66 },
1752         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1753         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1754         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1755         { "ADVANCED_SYSASSERT", 0 },
1756 };
1757
1758 static const char *desc_lookup(u32 num)
1759 {
1760         int i;
1761         int max = ARRAY_SIZE(desc_lookup_text);
1762
1763         if (num < max)
1764                 return desc_lookup_text[num];
1765
1766         max = ARRAY_SIZE(advanced_lookup) - 1;
1767         for (i = 0; i < max; i++) {
1768                 if (advanced_lookup[i].num == num)
1769                         break;
1770         }
1771         return advanced_lookup[i].name;
1772 }
1773
1774 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1775 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1776
1777 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1778 {
1779         u32 data2, line;
1780         u32 desc, time, count, base, data1;
1781         u32 blink1, blink2, ilink1, ilink2;
1782         u32 pc, hcmd;
1783         struct iwl_error_event_table table;
1784
1785         base = priv->device_pointers.error_event_table;
1786         if (priv->ucode_type == UCODE_SUBTYPE_INIT) {
1787                 if (!base)
1788                         base = priv->_agn.init_errlog_ptr;
1789         } else {
1790                 if (!base)
1791                         base = priv->_agn.inst_errlog_ptr;
1792         }
1793
1794         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1795                 IWL_ERR(priv,
1796                         "Not valid error log pointer 0x%08X for %s uCode\n",
1797                         base,
1798                         (priv->ucode_type == UCODE_SUBTYPE_INIT)
1799                                         ? "Init" : "RT");
1800                 return;
1801         }
1802
1803         iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1804
1805         count = table.valid;
1806
1807         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1808                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1809                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1810                         priv->status, count);
1811         }
1812
1813         desc = table.error_id;
1814         priv->isr_stats.err_code = desc;
1815         pc = table.pc;
1816         blink1 = table.blink1;
1817         blink2 = table.blink2;
1818         ilink1 = table.ilink1;
1819         ilink2 = table.ilink2;
1820         data1 = table.data1;
1821         data2 = table.data2;
1822         line = table.line;
1823         time = table.tsf_low;
1824         hcmd = table.hcmd;
1825
1826         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1827                                       blink1, blink2, ilink1, ilink2);
1828
1829         IWL_ERR(priv, "Desc                                  Time       "
1830                 "data1      data2      line\n");
1831         IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
1832                 desc_lookup(desc), desc, time, data1, data2, line);
1833         IWL_ERR(priv, "pc      blink1  blink2  ilink1  ilink2  hcmd\n");
1834         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
1835                 pc, blink1, blink2, ilink1, ilink2, hcmd);
1836 }
1837
1838 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1839
1840 /**
1841  * iwl_print_event_log - Dump error event log to syslog
1842  *
1843  */
1844 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1845                                u32 num_events, u32 mode,
1846                                int pos, char **buf, size_t bufsz)
1847 {
1848         u32 i;
1849         u32 base;       /* SRAM byte address of event log header */
1850         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1851         u32 ptr;        /* SRAM byte address of log data */
1852         u32 ev, time, data; /* event log data */
1853         unsigned long reg_flags;
1854
1855         if (num_events == 0)
1856                 return pos;
1857
1858         base = priv->device_pointers.log_event_table;
1859         if (priv->ucode_type == UCODE_SUBTYPE_INIT) {
1860                 if (!base)
1861                         base = priv->_agn.init_evtlog_ptr;
1862         } else {
1863                 if (!base)
1864                         base = priv->_agn.inst_evtlog_ptr;
1865         }
1866
1867         if (mode == 0)
1868                 event_size = 2 * sizeof(u32);
1869         else
1870                 event_size = 3 * sizeof(u32);
1871
1872         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1873
1874         /* Make sure device is powered up for SRAM reads */
1875         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1876         iwl_grab_nic_access(priv);
1877
1878         /* Set starting address; reads will auto-increment */
1879         iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1880         rmb();
1881
1882         /* "time" is actually "data" for mode 0 (no timestamp).
1883         * place event id # at far right for easier visual parsing. */
1884         for (i = 0; i < num_events; i++) {
1885                 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1886                 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1887                 if (mode == 0) {
1888                         /* data, ev */
1889                         if (bufsz) {
1890                                 pos += scnprintf(*buf + pos, bufsz - pos,
1891                                                 "EVT_LOG:0x%08x:%04u\n",
1892                                                 time, ev);
1893                         } else {
1894                                 trace_iwlwifi_dev_ucode_event(priv, 0,
1895                                         time, ev);
1896                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1897                                         time, ev);
1898                         }
1899                 } else {
1900                         data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1901                         if (bufsz) {
1902                                 pos += scnprintf(*buf + pos, bufsz - pos,
1903                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1904                                                  time, data, ev);
1905                         } else {
1906                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1907                                         time, data, ev);
1908                                 trace_iwlwifi_dev_ucode_event(priv, time,
1909                                         data, ev);
1910                         }
1911                 }
1912         }
1913
1914         /* Allow device to power down */
1915         iwl_release_nic_access(priv);
1916         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1917         return pos;
1918 }
1919
1920 /**
1921  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1922  */
1923 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1924                                     u32 num_wraps, u32 next_entry,
1925                                     u32 size, u32 mode,
1926                                     int pos, char **buf, size_t bufsz)
1927 {
1928         /*
1929          * display the newest DEFAULT_LOG_ENTRIES entries
1930          * i.e the entries just before the next ont that uCode would fill.
1931          */
1932         if (num_wraps) {
1933                 if (next_entry < size) {
1934                         pos = iwl_print_event_log(priv,
1935                                                 capacity - (size - next_entry),
1936                                                 size - next_entry, mode,
1937                                                 pos, buf, bufsz);
1938                         pos = iwl_print_event_log(priv, 0,
1939                                                   next_entry, mode,
1940                                                   pos, buf, bufsz);
1941                 } else
1942                         pos = iwl_print_event_log(priv, next_entry - size,
1943                                                   size, mode, pos, buf, bufsz);
1944         } else {
1945                 if (next_entry < size) {
1946                         pos = iwl_print_event_log(priv, 0, next_entry,
1947                                                   mode, pos, buf, bufsz);
1948                 } else {
1949                         pos = iwl_print_event_log(priv, next_entry - size,
1950                                                   size, mode, pos, buf, bufsz);
1951                 }
1952         }
1953         return pos;
1954 }
1955
1956 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1957
1958 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1959                             char **buf, bool display)
1960 {
1961         u32 base;       /* SRAM byte address of event log header */
1962         u32 capacity;   /* event log capacity in # entries */
1963         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1964         u32 num_wraps;  /* # times uCode wrapped to top of log */
1965         u32 next_entry; /* index of next entry to be written by uCode */
1966         u32 size;       /* # entries that we'll print */
1967         u32 logsize;
1968         int pos = 0;
1969         size_t bufsz = 0;
1970
1971         base = priv->device_pointers.log_event_table;
1972         if (priv->ucode_type == UCODE_SUBTYPE_INIT) {
1973                 logsize = priv->_agn.init_evtlog_size;
1974                 if (!base)
1975                         base = priv->_agn.init_evtlog_ptr;
1976         } else {
1977                 logsize = priv->_agn.inst_evtlog_size;
1978                 if (!base)
1979                         base = priv->_agn.inst_evtlog_ptr;
1980         }
1981
1982         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1983                 IWL_ERR(priv,
1984                         "Invalid event log pointer 0x%08X for %s uCode\n",
1985                         base,
1986                         (priv->ucode_type == UCODE_SUBTYPE_INIT)
1987                                         ? "Init" : "RT");
1988                 return -EINVAL;
1989         }
1990
1991         /* event log header */
1992         capacity = iwl_read_targ_mem(priv, base);
1993         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1994         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1995         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1996
1997         if (capacity > logsize) {
1998                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1999                         capacity, logsize);
2000                 capacity = logsize;
2001         }
2002
2003         if (next_entry > logsize) {
2004                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2005                         next_entry, logsize);
2006                 next_entry = logsize;
2007         }
2008
2009         size = num_wraps ? capacity : next_entry;
2010
2011         /* bail out if nothing in log */
2012         if (size == 0) {
2013                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2014                 return pos;
2015         }
2016
2017         /* enable/disable bt channel inhibition */
2018         priv->bt_ch_announce = iwlagn_bt_ch_announce;
2019
2020 #ifdef CONFIG_IWLWIFI_DEBUG
2021         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2022                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2023                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2024 #else
2025         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2026                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2027 #endif
2028         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2029                 size);
2030
2031 #ifdef CONFIG_IWLWIFI_DEBUG
2032         if (display) {
2033                 if (full_log)
2034                         bufsz = capacity * 48;
2035                 else
2036                         bufsz = size * 48;
2037                 *buf = kmalloc(bufsz, GFP_KERNEL);
2038                 if (!*buf)
2039                         return -ENOMEM;
2040         }
2041         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2042                 /*
2043                  * if uCode has wrapped back to top of log,
2044                  * start at the oldest entry,
2045                  * i.e the next one that uCode would fill.
2046                  */
2047                 if (num_wraps)
2048                         pos = iwl_print_event_log(priv, next_entry,
2049                                                 capacity - next_entry, mode,
2050                                                 pos, buf, bufsz);
2051                 /* (then/else) start at top of log */
2052                 pos = iwl_print_event_log(priv, 0,
2053                                           next_entry, mode, pos, buf, bufsz);
2054         } else
2055                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2056                                                 next_entry, size, mode,
2057                                                 pos, buf, bufsz);
2058 #else
2059         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2060                                         next_entry, size, mode,
2061                                         pos, buf, bufsz);
2062 #endif
2063         return pos;
2064 }
2065
2066 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2067 {
2068         struct iwl_ct_kill_config cmd;
2069         struct iwl_ct_kill_throttling_config adv_cmd;
2070         unsigned long flags;
2071         int ret = 0;
2072
2073         spin_lock_irqsave(&priv->lock, flags);
2074         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2075                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2076         spin_unlock_irqrestore(&priv->lock, flags);
2077         priv->thermal_throttle.ct_kill_toggle = false;
2078
2079         if (priv->cfg->base_params->support_ct_kill_exit) {
2080                 adv_cmd.critical_temperature_enter =
2081                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2082                 adv_cmd.critical_temperature_exit =
2083                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2084
2085                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2086                                        sizeof(adv_cmd), &adv_cmd);
2087                 if (ret)
2088                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2089                 else
2090                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2091                                         "succeeded, "
2092                                         "critical temperature enter is %d,"
2093                                         "exit is %d\n",
2094                                        priv->hw_params.ct_kill_threshold,
2095                                        priv->hw_params.ct_kill_exit_threshold);
2096         } else {
2097                 cmd.critical_temperature_R =
2098                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2099
2100                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2101                                        sizeof(cmd), &cmd);
2102                 if (ret)
2103                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2104                 else
2105                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2106                                         "succeeded, "
2107                                         "critical temperature is %d\n",
2108                                         priv->hw_params.ct_kill_threshold);
2109         }
2110 }
2111
2112 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
2113 {
2114         struct iwl_calib_cfg_cmd calib_cfg_cmd;
2115         struct iwl_host_cmd cmd = {
2116                 .id = CALIBRATION_CFG_CMD,
2117                 .len = sizeof(struct iwl_calib_cfg_cmd),
2118                 .data = &calib_cfg_cmd,
2119         };
2120
2121         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
2122         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
2123         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
2124
2125         return iwl_send_cmd(priv, &cmd);
2126 }
2127
2128
2129 /**
2130  * iwl_alive_start - called after REPLY_ALIVE notification received
2131  *                   from protocol/runtime uCode (initialization uCode's
2132  *                   Alive gets handled by iwl_init_alive_start()).
2133  */
2134 int iwl_alive_start(struct iwl_priv *priv)
2135 {
2136         int ret = 0;
2137         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2138
2139         iwl_reset_ict(priv);
2140
2141         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2142
2143         /* After the ALIVE response, we can send host commands to the uCode */
2144         set_bit(STATUS_ALIVE, &priv->status);
2145
2146         /* Enable watchdog to monitor the driver tx queues */
2147         iwl_setup_watchdog(priv);
2148
2149         if (iwl_is_rfkill(priv))
2150                 return -ERFKILL;
2151
2152         /* download priority table before any calibration request */
2153         if (priv->cfg->bt_params &&
2154             priv->cfg->bt_params->advanced_bt_coexist) {
2155                 /* Configure Bluetooth device coexistence support */
2156                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2157                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2158                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2159                 priv->cfg->ops->hcmd->send_bt_config(priv);
2160                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2161                 iwlagn_send_prio_tbl(priv);
2162
2163                 /* FIXME: w/a to force change uCode BT state machine */
2164                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2165                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2166                 if (ret)
2167                         return ret;
2168                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2169                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2170                 if (ret)
2171                         return ret;
2172         }
2173         if (priv->hw_params.calib_rt_cfg)
2174                 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2175
2176         ieee80211_wake_queues(priv->hw);
2177
2178         priv->active_rate = IWL_RATES_MASK;
2179
2180         /* Configure Tx antenna selection based on H/W config */
2181         if (priv->cfg->ops->hcmd->set_tx_ant)
2182                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2183
2184         if (iwl_is_associated_ctx(ctx)) {
2185                 struct iwl_rxon_cmd *active_rxon =
2186                                 (struct iwl_rxon_cmd *)&ctx->active;
2187                 /* apply any changes in staging */
2188                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2189                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2190         } else {
2191                 struct iwl_rxon_context *tmp;
2192                 /* Initialize our rx_config data */
2193                 for_each_context(priv, tmp)
2194                         iwl_connection_init_rx_config(priv, tmp);
2195
2196                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2197                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2198         }
2199
2200         if (!priv->cfg->bt_params || (priv->cfg->bt_params &&
2201             !priv->cfg->bt_params->advanced_bt_coexist)) {
2202                 /*
2203                  * default is 2-wire BT coexexistence support
2204                  */
2205                 priv->cfg->ops->hcmd->send_bt_config(priv);
2206         }
2207
2208         iwl_reset_run_time_calib(priv);
2209
2210         set_bit(STATUS_READY, &priv->status);
2211
2212         /* Configure the adapter for unassociated operation */
2213         ret = iwlcore_commit_rxon(priv, ctx);
2214         if (ret)
2215                 return ret;
2216
2217         /* At this point, the NIC is initialized and operational */
2218         iwl_rf_kill_ct_config(priv);
2219
2220         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2221
2222         return iwl_power_update_mode(priv, true);
2223 }
2224
2225 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2226
2227 static void __iwl_down(struct iwl_priv *priv)
2228 {
2229         int exit_pending;
2230
2231         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2232
2233         iwl_scan_cancel_timeout(priv, 200);
2234
2235         exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2236
2237         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2238          * to prevent rearm timer */
2239         del_timer_sync(&priv->watchdog);
2240
2241         iwl_clear_ucode_stations(priv, NULL);
2242         iwl_dealloc_bcast_stations(priv);
2243         iwl_clear_driver_stations(priv);
2244
2245         /* reset BT coex data */
2246         priv->bt_status = 0;
2247         if (priv->cfg->bt_params)
2248                 priv->bt_traffic_load =
2249                          priv->cfg->bt_params->bt_init_traffic_load;
2250         else
2251                 priv->bt_traffic_load = 0;
2252         priv->bt_full_concurrent = false;
2253         priv->bt_ci_compliance = 0;
2254
2255         /* Wipe out the EXIT_PENDING status bit if we are not actually
2256          * exiting the module */
2257         if (!exit_pending)
2258                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2259
2260         if (priv->mac80211_registered)
2261                 ieee80211_stop_queues(priv->hw);
2262
2263         /* Clear out all status bits but a few that are stable across reset */
2264         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2265                                 STATUS_RF_KILL_HW |
2266                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2267                                 STATUS_GEO_CONFIGURED |
2268                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2269                                 STATUS_FW_ERROR |
2270                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2271                                 STATUS_EXIT_PENDING;
2272
2273         iwlagn_stop_device(priv);
2274
2275         dev_kfree_skb(priv->beacon_skb);
2276         priv->beacon_skb = NULL;
2277 }
2278
2279 static void iwl_down(struct iwl_priv *priv)
2280 {
2281         mutex_lock(&priv->mutex);
2282         __iwl_down(priv);
2283         mutex_unlock(&priv->mutex);
2284
2285         iwl_cancel_deferred_work(priv);
2286 }
2287
2288 #define HW_READY_TIMEOUT (50)
2289
2290 /* Note: returns poll_bit return value, which is >= 0 if success */
2291 static int iwl_set_hw_ready(struct iwl_priv *priv)
2292 {
2293         int ret;
2294
2295         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2296                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2297
2298         /* See if we got it */
2299         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2300                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2301                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2302                                 HW_READY_TIMEOUT);
2303
2304         IWL_DEBUG_INFO(priv, "hardware%s ready\n", ret < 0 ? " not" : "");
2305         return ret;
2306 }
2307
2308 /* Note: returns standard 0/-ERROR code */
2309 int iwl_prepare_card_hw(struct iwl_priv *priv)
2310 {
2311         int ret;
2312
2313         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
2314
2315         ret = iwl_set_hw_ready(priv);
2316         if (ret >= 0)
2317                 return 0;
2318
2319         /* If HW is not ready, prepare the conditions to check again */
2320         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2321                         CSR_HW_IF_CONFIG_REG_PREPARE);
2322
2323         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2324                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2325                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2326
2327         if (ret < 0)
2328                 return ret;
2329
2330         /* HW should be ready by now, check again. */
2331         ret = iwl_set_hw_ready(priv);
2332         if (ret >= 0)
2333                 return 0;
2334         return ret;
2335 }
2336
2337 #define MAX_HW_RESTARTS 5
2338
2339 static int __iwl_up(struct iwl_priv *priv)
2340 {
2341         struct iwl_rxon_context *ctx;
2342         int ret;
2343
2344         lockdep_assert_held(&priv->mutex);
2345
2346         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2347                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2348                 return -EIO;
2349         }
2350
2351         for_each_context(priv, ctx) {
2352                 ret = iwlagn_alloc_bcast_station(priv, ctx);
2353                 if (ret) {
2354                         iwl_dealloc_bcast_stations(priv);
2355                         return ret;
2356                 }
2357         }
2358
2359         ret = iwlagn_run_init_ucode(priv);
2360         if (ret) {
2361                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
2362                 goto error;
2363         }
2364
2365         ret = iwlagn_load_ucode_wait_alive(priv,
2366                                            &priv->ucode_rt,
2367                                            UCODE_SUBTYPE_REGULAR,
2368                                            UCODE_SUBTYPE_REGULAR_NEW);
2369         if (ret) {
2370                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
2371                 goto error;
2372         }
2373
2374         ret = iwl_alive_start(priv);
2375         if (ret)
2376                 goto error;
2377         return 0;
2378
2379  error:
2380         set_bit(STATUS_EXIT_PENDING, &priv->status);
2381         __iwl_down(priv);
2382         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2383
2384         IWL_ERR(priv, "Unable to initialize device.\n");
2385         return ret;
2386 }
2387
2388
2389 /*****************************************************************************
2390  *
2391  * Workqueue callbacks
2392  *
2393  *****************************************************************************/
2394
2395 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2396 {
2397         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2398                         run_time_calib_work);
2399
2400         mutex_lock(&priv->mutex);
2401
2402         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2403             test_bit(STATUS_SCANNING, &priv->status)) {
2404                 mutex_unlock(&priv->mutex);
2405                 return;
2406         }
2407
2408         if (priv->start_calib) {
2409                 iwl_chain_noise_calibration(priv);
2410                 iwl_sensitivity_calibration(priv);
2411         }
2412
2413         mutex_unlock(&priv->mutex);
2414 }
2415
2416 static void iwlagn_prepare_restart(struct iwl_priv *priv)
2417 {
2418         struct iwl_rxon_context *ctx;
2419         bool bt_full_concurrent;
2420         u8 bt_ci_compliance;
2421         u8 bt_load;
2422         u8 bt_status;
2423
2424         lockdep_assert_held(&priv->mutex);
2425
2426         for_each_context(priv, ctx)
2427                 ctx->vif = NULL;
2428         priv->is_open = 0;
2429
2430         /*
2431          * __iwl_down() will clear the BT status variables,
2432          * which is correct, but when we restart we really
2433          * want to keep them so restore them afterwards.
2434          *
2435          * The restart process will later pick them up and
2436          * re-configure the hw when we reconfigure the BT
2437          * command.
2438          */
2439         bt_full_concurrent = priv->bt_full_concurrent;
2440         bt_ci_compliance = priv->bt_ci_compliance;
2441         bt_load = priv->bt_traffic_load;
2442         bt_status = priv->bt_status;
2443
2444         __iwl_down(priv);
2445
2446         priv->bt_full_concurrent = bt_full_concurrent;
2447         priv->bt_ci_compliance = bt_ci_compliance;
2448         priv->bt_traffic_load = bt_load;
2449         priv->bt_status = bt_status;
2450 }
2451
2452 static void iwl_bg_restart(struct work_struct *data)
2453 {
2454         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2455
2456         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2457                 return;
2458
2459         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2460                 mutex_lock(&priv->mutex);
2461                 iwlagn_prepare_restart(priv);
2462                 mutex_unlock(&priv->mutex);
2463                 iwl_cancel_deferred_work(priv);
2464                 ieee80211_restart_hw(priv->hw);
2465         } else {
2466                 WARN_ON(1);
2467         }
2468 }
2469
2470 static void iwl_bg_rx_replenish(struct work_struct *data)
2471 {
2472         struct iwl_priv *priv =
2473             container_of(data, struct iwl_priv, rx_replenish);
2474
2475         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2476                 return;
2477
2478         mutex_lock(&priv->mutex);
2479         iwlagn_rx_replenish(priv);
2480         mutex_unlock(&priv->mutex);
2481 }
2482
2483 static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
2484                                  struct ieee80211_channel *chan,
2485                                  enum nl80211_channel_type channel_type,
2486                                  unsigned int wait)
2487 {
2488         struct iwl_priv *priv = hw->priv;
2489         int ret;
2490
2491         /* Not supported if we don't have PAN */
2492         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) {
2493                 ret = -EOPNOTSUPP;
2494                 goto free;
2495         }
2496
2497         /* Not supported on pre-P2P firmware */
2498         if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
2499                                         BIT(NL80211_IFTYPE_P2P_CLIENT))) {
2500                 ret = -EOPNOTSUPP;
2501                 goto free;
2502         }
2503
2504         mutex_lock(&priv->mutex);
2505
2506         if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) {
2507                 /*
2508                  * If the PAN context is free, use the normal
2509                  * way of doing remain-on-channel offload + TX.
2510                  */
2511                 ret = 1;
2512                 goto out;
2513         }
2514
2515         /* TODO: queue up if scanning? */
2516         if (test_bit(STATUS_SCANNING, &priv->status) ||
2517             priv->_agn.offchan_tx_skb) {
2518                 ret = -EBUSY;
2519                 goto out;
2520         }
2521
2522         /*
2523          * max_scan_ie_len doesn't include the blank SSID or the header,
2524          * so need to add that again here.
2525          */
2526         if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) {
2527                 ret = -ENOBUFS;
2528                 goto out;
2529         }
2530
2531         priv->_agn.offchan_tx_skb = skb;
2532         priv->_agn.offchan_tx_timeout = wait;
2533         priv->_agn.offchan_tx_chan = chan;
2534
2535         ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif,
2536                                 IWL_SCAN_OFFCH_TX, chan->band);
2537         if (ret)
2538                 priv->_agn.offchan_tx_skb = NULL;
2539  out:
2540         mutex_unlock(&priv->mutex);
2541  free:
2542         if (ret < 0)
2543                 kfree_skb(skb);
2544
2545         return ret;
2546 }
2547
2548 static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw)
2549 {
2550         struct iwl_priv *priv = hw->priv;
2551         int ret;
2552
2553         mutex_lock(&priv->mutex);
2554
2555         if (!priv->_agn.offchan_tx_skb) {
2556                 ret = -EINVAL;
2557                 goto unlock;
2558         }
2559
2560         priv->_agn.offchan_tx_skb = NULL;
2561
2562         ret = iwl_scan_cancel_timeout(priv, 200);
2563         if (ret)
2564                 ret = -EIO;
2565 unlock:
2566         mutex_unlock(&priv->mutex);
2567
2568         return ret;
2569 }
2570
2571 /*****************************************************************************
2572  *
2573  * mac80211 entry point functions
2574  *
2575  *****************************************************************************/
2576
2577 /*
2578  * Not a mac80211 entry point function, but it fits in with all the
2579  * other mac80211 functions grouped here.
2580  */
2581 static int iwl_mac_setup_register(struct iwl_priv *priv,
2582                                   struct iwlagn_ucode_capabilities *capa)
2583 {
2584         int ret;
2585         struct ieee80211_hw *hw = priv->hw;
2586         struct iwl_rxon_context *ctx;
2587
2588         hw->rate_control_algorithm = "iwl-agn-rs";
2589
2590         /* Tell mac80211 our characteristics */
2591         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2592                     IEEE80211_HW_AMPDU_AGGREGATION |
2593                     IEEE80211_HW_NEED_DTIM_PERIOD |
2594                     IEEE80211_HW_SPECTRUM_MGMT |
2595                     IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2596
2597         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2598
2599         hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2600                      IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2601
2602         if (priv->cfg->sku & IWL_SKU_N)
2603                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2604                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2605
2606         if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2607                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2608
2609         hw->sta_data_size = sizeof(struct iwl_station_priv);
2610         hw->vif_data_size = sizeof(struct iwl_vif_priv);
2611
2612         for_each_context(priv, ctx) {
2613                 hw->wiphy->interface_modes |= ctx->interface_modes;
2614                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2615         }
2616
2617         hw->wiphy->max_remain_on_channel_duration = 1000;
2618
2619         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2620                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
2621                             WIPHY_FLAG_IBSS_RSN;
2622
2623         /*
2624          * For now, disable PS by default because it affects
2625          * RX performance significantly.
2626          */
2627         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2628
2629         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2630         /* we create the 802.11 header and a zero-length SSID element */
2631         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2632
2633         /* Default value; 4 EDCA QOS priorities */
2634         hw->queues = 4;
2635
2636         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2637
2638         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2639                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2640                         &priv->bands[IEEE80211_BAND_2GHZ];
2641         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2642                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2643                         &priv->bands[IEEE80211_BAND_5GHZ];
2644
2645         iwl_leds_init(priv);
2646
2647         ret = ieee80211_register_hw(priv->hw);
2648         if (ret) {
2649                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2650                 return ret;
2651         }
2652         priv->mac80211_registered = 1;
2653
2654         return 0;
2655 }
2656
2657
2658 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2659 {
2660         struct iwl_priv *priv = hw->priv;
2661         int ret;
2662
2663         IWL_DEBUG_MAC80211(priv, "enter\n");
2664
2665         /* we should be verifying the device is ready to be opened */
2666         mutex_lock(&priv->mutex);
2667         ret = __iwl_up(priv);
2668         mutex_unlock(&priv->mutex);
2669         if (ret)
2670                 return ret;
2671
2672         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2673
2674         /* Now we should be done, and the READY bit should be set. */
2675         if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2676                 ret = -EIO;
2677
2678         iwlagn_led_enable(priv);
2679
2680         priv->is_open = 1;
2681         IWL_DEBUG_MAC80211(priv, "leave\n");
2682         return 0;
2683 }
2684
2685 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2686 {
2687         struct iwl_priv *priv = hw->priv;
2688
2689         IWL_DEBUG_MAC80211(priv, "enter\n");
2690
2691         if (!priv->is_open)
2692                 return;
2693
2694         priv->is_open = 0;
2695
2696         iwl_down(priv);
2697
2698         flush_workqueue(priv->workqueue);
2699
2700         /* User space software may expect getting rfkill changes
2701          * even if interface is down */
2702         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2703         iwl_enable_rfkill_int(priv);
2704
2705         IWL_DEBUG_MAC80211(priv, "leave\n");
2706 }
2707
2708 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2709 {
2710         struct iwl_priv *priv = hw->priv;
2711
2712         IWL_DEBUG_MACDUMP(priv, "enter\n");
2713
2714         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2715                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2716
2717         if (iwlagn_tx_skb(priv, skb))
2718                 dev_kfree_skb_any(skb);
2719
2720         IWL_DEBUG_MACDUMP(priv, "leave\n");
2721 }
2722
2723 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2724                                        struct ieee80211_vif *vif,
2725                                        struct ieee80211_key_conf *keyconf,
2726                                        struct ieee80211_sta *sta,
2727                                        u32 iv32, u16 *phase1key)
2728 {
2729         struct iwl_priv *priv = hw->priv;
2730         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2731
2732         IWL_DEBUG_MAC80211(priv, "enter\n");
2733
2734         iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
2735                             iv32, phase1key);
2736
2737         IWL_DEBUG_MAC80211(priv, "leave\n");
2738 }
2739
2740 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2741                               struct ieee80211_vif *vif,
2742                               struct ieee80211_sta *sta,
2743                               struct ieee80211_key_conf *key)
2744 {
2745         struct iwl_priv *priv = hw->priv;
2746         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2747         struct iwl_rxon_context *ctx = vif_priv->ctx;
2748         int ret;
2749         u8 sta_id;
2750         bool is_default_wep_key = false;
2751
2752         IWL_DEBUG_MAC80211(priv, "enter\n");
2753
2754         if (iwlagn_mod_params.sw_crypto) {
2755                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2756                 return -EOPNOTSUPP;
2757         }
2758
2759         /*
2760          * To support IBSS RSN, don't program group keys in IBSS, the
2761          * hardware will then not attempt to decrypt the frames.
2762          */
2763         if (vif->type == NL80211_IFTYPE_ADHOC &&
2764             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
2765                 return -EOPNOTSUPP;
2766
2767         sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
2768         if (sta_id == IWL_INVALID_STATION)
2769                 return -EINVAL;
2770
2771         mutex_lock(&priv->mutex);
2772         iwl_scan_cancel_timeout(priv, 100);
2773
2774         /*
2775          * If we are getting WEP group key and we didn't receive any key mapping
2776          * so far, we are in legacy wep mode (group key only), otherwise we are
2777          * in 1X mode.
2778          * In legacy wep mode, we use another host command to the uCode.
2779          */
2780         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2781              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2782             !sta) {
2783                 if (cmd == SET_KEY)
2784                         is_default_wep_key = !ctx->key_mapping_keys;
2785                 else
2786                         is_default_wep_key =
2787                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2788         }
2789
2790         switch (cmd) {
2791         case SET_KEY:
2792                 if (is_default_wep_key)
2793                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2794                 else
2795                         ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
2796                                                   key, sta_id);
2797
2798                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2799                 break;
2800         case DISABLE_KEY:
2801                 if (is_default_wep_key)
2802                         ret = iwl_remove_default_wep_key(priv, ctx, key);
2803                 else
2804                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
2805
2806                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2807                 break;
2808         default:
2809                 ret = -EINVAL;
2810         }
2811
2812         mutex_unlock(&priv->mutex);
2813         IWL_DEBUG_MAC80211(priv, "leave\n");
2814
2815         return ret;
2816 }
2817
2818 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2819                                    struct ieee80211_vif *vif,
2820                                    enum ieee80211_ampdu_mlme_action action,
2821                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2822                                    u8 buf_size)
2823 {
2824         struct iwl_priv *priv = hw->priv;
2825         int ret = -EINVAL;
2826         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2827
2828         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2829                      sta->addr, tid);
2830
2831         if (!(priv->cfg->sku & IWL_SKU_N))
2832                 return -EACCES;
2833
2834         mutex_lock(&priv->mutex);
2835
2836         switch (action) {
2837         case IEEE80211_AMPDU_RX_START:
2838                 IWL_DEBUG_HT(priv, "start Rx\n");
2839                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2840                 break;
2841         case IEEE80211_AMPDU_RX_STOP:
2842                 IWL_DEBUG_HT(priv, "stop Rx\n");
2843                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2844                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2845                         ret = 0;
2846                 break;
2847         case IEEE80211_AMPDU_TX_START:
2848                 IWL_DEBUG_HT(priv, "start Tx\n");
2849                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2850                 if (ret == 0) {
2851                         priv->_agn.agg_tids_count++;
2852                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2853                                      priv->_agn.agg_tids_count);
2854                 }
2855                 break;
2856         case IEEE80211_AMPDU_TX_STOP:
2857                 IWL_DEBUG_HT(priv, "stop Tx\n");
2858                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2859                 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
2860                         priv->_agn.agg_tids_count--;
2861                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2862                                      priv->_agn.agg_tids_count);
2863                 }
2864                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2865                         ret = 0;
2866                 if (priv->cfg->ht_params &&
2867                     priv->cfg->ht_params->use_rts_for_aggregation) {
2868                         struct iwl_station_priv *sta_priv =
2869                                 (void *) sta->drv_priv;
2870                         /*
2871                          * switch off RTS/CTS if it was previously enabled
2872                          */
2873
2874                         sta_priv->lq_sta.lq.general_params.flags &=
2875                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2876                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2877                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2878                 }
2879                 break;
2880         case IEEE80211_AMPDU_TX_OPERATIONAL:
2881                 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2882
2883                 iwlagn_txq_agg_queue_setup(priv, sta, tid, buf_size);
2884
2885                 /*
2886                  * If the limit is 0, then it wasn't initialised yet,
2887                  * use the default. We can do that since we take the
2888                  * minimum below, and we don't want to go above our
2889                  * default due to hardware restrictions.
2890                  */
2891                 if (sta_priv->max_agg_bufsize == 0)
2892                         sta_priv->max_agg_bufsize =
2893                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2894
2895                 /*
2896                  * Even though in theory the peer could have different
2897                  * aggregation reorder buffer sizes for different sessions,
2898                  * our ucode doesn't allow for that and has a global limit
2899                  * for each station. Therefore, use the minimum of all the
2900                  * aggregation sessions and our default value.
2901                  */
2902                 sta_priv->max_agg_bufsize =
2903                         min(sta_priv->max_agg_bufsize, buf_size);
2904
2905                 if (priv->cfg->ht_params &&
2906                     priv->cfg->ht_params->use_rts_for_aggregation) {
2907                         /*
2908                          * switch to RTS/CTS if it is the prefer protection
2909                          * method for HT traffic
2910                          */
2911
2912                         sta_priv->lq_sta.lq.general_params.flags |=
2913                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2914                 }
2915
2916                 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2917                         sta_priv->max_agg_bufsize;
2918
2919                 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2920                                 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2921                 ret = 0;
2922                 break;
2923         }
2924         mutex_unlock(&priv->mutex);
2925
2926         return ret;
2927 }
2928
2929 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2930                               struct ieee80211_vif *vif,
2931                               struct ieee80211_sta *sta)
2932 {
2933         struct iwl_priv *priv = hw->priv;
2934         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2935         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2936         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2937         int ret;
2938         u8 sta_id;
2939
2940         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2941                         sta->addr);
2942         mutex_lock(&priv->mutex);
2943         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2944                         sta->addr);
2945         sta_priv->common.sta_id = IWL_INVALID_STATION;
2946
2947         atomic_set(&sta_priv->pending_frames, 0);
2948         if (vif->type == NL80211_IFTYPE_AP)
2949                 sta_priv->client = true;
2950
2951         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2952                                      is_ap, sta, &sta_id);
2953         if (ret) {
2954                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2955                         sta->addr, ret);
2956                 /* Should we return success if return code is EEXIST ? */
2957                 mutex_unlock(&priv->mutex);
2958                 return ret;
2959         }
2960
2961         sta_priv->common.sta_id = sta_id;
2962
2963         /* Initialize rate scaling */
2964         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2965                        sta->addr);
2966         iwl_rs_rate_init(priv, sta, sta_id);
2967         mutex_unlock(&priv->mutex);
2968
2969         return 0;
2970 }
2971
2972 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2973                                 struct ieee80211_channel_switch *ch_switch)
2974 {
2975         struct iwl_priv *priv = hw->priv;
2976         const struct iwl_channel_info *ch_info;
2977         struct ieee80211_conf *conf = &hw->conf;
2978         struct ieee80211_channel *channel = ch_switch->channel;
2979         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2980         /*
2981          * MULTI-FIXME
2982          * When we add support for multiple interfaces, we need to
2983          * revisit this. The channel switch command in the device
2984          * only affects the BSS context, but what does that really
2985          * mean? And what if we get a CSA on the second interface?
2986          * This needs a lot of work.
2987          */
2988         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2989         u16 ch;
2990         unsigned long flags = 0;
2991
2992         IWL_DEBUG_MAC80211(priv, "enter\n");
2993
2994         mutex_lock(&priv->mutex);
2995
2996         if (iwl_is_rfkill(priv))
2997                 goto out;
2998
2999         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3000             test_bit(STATUS_SCANNING, &priv->status))
3001                 goto out;
3002
3003         if (!iwl_is_associated_ctx(ctx))
3004                 goto out;
3005
3006         /* channel switch in progress */
3007         if (priv->switch_rxon.switch_in_progress == true)
3008                 goto out;
3009
3010         if (priv->cfg->ops->lib->set_channel_switch) {
3011
3012                 ch = channel->hw_value;
3013                 if (le16_to_cpu(ctx->active.channel) != ch) {
3014                         ch_info = iwl_get_channel_info(priv,
3015                                                        channel->band,
3016                                                        ch);
3017                         if (!is_channel_valid(ch_info)) {
3018                                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3019                                 goto out;
3020                         }
3021                         spin_lock_irqsave(&priv->lock, flags);
3022
3023                         priv->current_ht_config.smps = conf->smps_mode;
3024
3025                         /* Configure HT40 channels */
3026                         ctx->ht.enabled = conf_is_ht(conf);
3027                         if (ctx->ht.enabled) {
3028                                 if (conf_is_ht40_minus(conf)) {
3029                                         ctx->ht.extension_chan_offset =
3030                                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3031                                         ctx->ht.is_40mhz = true;
3032                                 } else if (conf_is_ht40_plus(conf)) {
3033                                         ctx->ht.extension_chan_offset =
3034                                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3035                                         ctx->ht.is_40mhz = true;
3036                                 } else {
3037                                         ctx->ht.extension_chan_offset =
3038                                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3039                                         ctx->ht.is_40mhz = false;
3040                                 }
3041                         } else
3042                                 ctx->ht.is_40mhz = false;
3043
3044                         if ((le16_to_cpu(ctx->staging.channel) != ch))
3045                                 ctx->staging.flags = 0;
3046
3047                         iwl_set_rxon_channel(priv, channel, ctx);
3048                         iwl_set_rxon_ht(priv, ht_conf);
3049                         iwl_set_flags_for_band(priv, ctx, channel->band,
3050                                                ctx->vif);
3051                         spin_unlock_irqrestore(&priv->lock, flags);
3052
3053                         iwl_set_rate(priv);
3054                         /*
3055                          * at this point, staging_rxon has the
3056                          * configuration for channel switch
3057                          */
3058                         if (priv->cfg->ops->lib->set_channel_switch(priv,
3059                                                                     ch_switch))
3060                                 priv->switch_rxon.switch_in_progress = false;
3061                 }
3062         }
3063 out:
3064         mutex_unlock(&priv->mutex);
3065         if (!priv->switch_rxon.switch_in_progress)
3066                 ieee80211_chswitch_done(ctx->vif, false);
3067         IWL_DEBUG_MAC80211(priv, "leave\n");
3068 }
3069
3070 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3071                                     unsigned int changed_flags,
3072                                     unsigned int *total_flags,
3073                                     u64 multicast)
3074 {
3075         struct iwl_priv *priv = hw->priv;
3076         __le32 filter_or = 0, filter_nand = 0;
3077         struct iwl_rxon_context *ctx;
3078
3079 #define CHK(test, flag) do { \
3080         if (*total_flags & (test))              \
3081                 filter_or |= (flag);            \
3082         else                                    \
3083                 filter_nand |= (flag);          \
3084         } while (0)
3085
3086         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3087                         changed_flags, *total_flags);
3088
3089         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3090         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3091         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3092         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3093
3094 #undef CHK
3095
3096         mutex_lock(&priv->mutex);
3097
3098         for_each_context(priv, ctx) {
3099                 ctx->staging.filter_flags &= ~filter_nand;
3100                 ctx->staging.filter_flags |= filter_or;
3101
3102                 /*
3103                  * Not committing directly because hardware can perform a scan,
3104                  * but we'll eventually commit the filter flags change anyway.
3105                  */
3106         }
3107
3108         mutex_unlock(&priv->mutex);
3109
3110         /*
3111          * Receiving all multicast frames is always enabled by the
3112          * default flags setup in iwl_connection_init_rx_config()
3113          * since we currently do not support programming multicast
3114          * filters into the device.
3115          */
3116         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3117                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3118 }
3119
3120 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3121 {
3122         struct iwl_priv *priv = hw->priv;
3123
3124         mutex_lock(&priv->mutex);
3125         IWL_DEBUG_MAC80211(priv, "enter\n");
3126
3127         /* do not support "flush" */
3128         if (!priv->cfg->ops->lib->txfifo_flush)
3129                 goto done;
3130
3131         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3132                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3133                 goto done;
3134         }
3135         if (iwl_is_rfkill(priv)) {
3136                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3137                 goto done;
3138         }
3139
3140         /*
3141          * mac80211 will not push any more frames for transmit
3142          * until the flush is completed
3143          */
3144         if (drop) {
3145                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3146                 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
3147                         IWL_ERR(priv, "flush request fail\n");
3148                         goto done;
3149                 }
3150         }
3151         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3152         iwlagn_wait_tx_queue_empty(priv);
3153 done:
3154         mutex_unlock(&priv->mutex);
3155         IWL_DEBUG_MAC80211(priv, "leave\n");
3156 }
3157
3158 static void iwlagn_disable_roc(struct iwl_priv *priv)
3159 {
3160         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3161         struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel);
3162
3163         lockdep_assert_held(&priv->mutex);
3164
3165         if (!ctx->is_active)
3166                 return;
3167
3168         ctx->staging.dev_type = RXON_DEV_TYPE_2STA;
3169         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3170         iwl_set_rxon_channel(priv, chan, ctx);
3171         iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
3172
3173         priv->_agn.hw_roc_channel = NULL;
3174
3175         iwlcore_commit_rxon(priv, ctx);
3176
3177         ctx->is_active = false;
3178 }
3179
3180 static void iwlagn_bg_roc_done(struct work_struct *work)
3181 {
3182         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3183                                              _agn.hw_roc_work.work);
3184
3185         mutex_lock(&priv->mutex);
3186         ieee80211_remain_on_channel_expired(priv->hw);
3187         iwlagn_disable_roc(priv);
3188         mutex_unlock(&priv->mutex);
3189 }
3190
3191 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3192                                      struct ieee80211_channel *channel,
3193                                      enum nl80211_channel_type channel_type,
3194                                      int duration)
3195 {
3196         struct iwl_priv *priv = hw->priv;
3197         int err = 0;
3198
3199         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3200                 return -EOPNOTSUPP;
3201
3202         if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
3203                                         BIT(NL80211_IFTYPE_P2P_CLIENT)))
3204                 return -EOPNOTSUPP;
3205
3206         mutex_lock(&priv->mutex);
3207
3208         if (priv->contexts[IWL_RXON_CTX_PAN].is_active ||
3209             test_bit(STATUS_SCAN_HW, &priv->status)) {
3210                 err = -EBUSY;
3211                 goto out;
3212         }
3213
3214         priv->contexts[IWL_RXON_CTX_PAN].is_active = true;
3215         priv->_agn.hw_roc_channel = channel;
3216         priv->_agn.hw_roc_chantype = channel_type;
3217         priv->_agn.hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024);
3218         iwlcore_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]);
3219         queue_delayed_work(priv->workqueue, &priv->_agn.hw_roc_work,
3220                            msecs_to_jiffies(duration + 20));
3221
3222         msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */
3223         ieee80211_ready_on_channel(priv->hw);
3224
3225  out:
3226         mutex_unlock(&priv->mutex);
3227
3228         return err;
3229 }
3230
3231 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3232 {
3233         struct iwl_priv *priv = hw->priv;
3234
3235         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3236                 return -EOPNOTSUPP;
3237
3238         cancel_delayed_work_sync(&priv->_agn.hw_roc_work);
3239
3240         mutex_lock(&priv->mutex);
3241         iwlagn_disable_roc(priv);
3242         mutex_unlock(&priv->mutex);
3243
3244         return 0;
3245 }
3246
3247 /*****************************************************************************
3248  *
3249  * driver setup and teardown
3250  *
3251  *****************************************************************************/
3252
3253 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3254 {
3255         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3256
3257         init_waitqueue_head(&priv->wait_command_queue);
3258
3259         INIT_WORK(&priv->restart, iwl_bg_restart);
3260         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3261         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3262         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3263         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3264         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3265         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3266         INIT_DELAYED_WORK(&priv->_agn.hw_roc_work, iwlagn_bg_roc_done);
3267
3268         iwl_setup_scan_deferred_work(priv);
3269
3270         if (priv->cfg->ops->lib->setup_deferred_work)
3271                 priv->cfg->ops->lib->setup_deferred_work(priv);
3272
3273         init_timer(&priv->statistics_periodic);
3274         priv->statistics_periodic.data = (unsigned long)priv;
3275         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3276
3277         init_timer(&priv->ucode_trace);
3278         priv->ucode_trace.data = (unsigned long)priv;
3279         priv->ucode_trace.function = iwl_bg_ucode_trace;
3280
3281         init_timer(&priv->watchdog);
3282         priv->watchdog.data = (unsigned long)priv;
3283         priv->watchdog.function = iwl_bg_watchdog;
3284
3285         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3286                 iwl_irq_tasklet, (unsigned long)priv);
3287 }
3288
3289 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3290 {
3291         if (priv->cfg->ops->lib->cancel_deferred_work)
3292                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3293
3294         cancel_work_sync(&priv->run_time_calib_work);
3295         cancel_work_sync(&priv->beacon_update);
3296
3297         iwl_cancel_scan_deferred_work(priv);
3298
3299         cancel_work_sync(&priv->bt_full_concurrency);
3300         cancel_work_sync(&priv->bt_runtime_config);
3301
3302         del_timer_sync(&priv->statistics_periodic);
3303         del_timer_sync(&priv->ucode_trace);
3304 }
3305
3306 static void iwl_init_hw_rates(struct iwl_priv *priv,
3307                               struct ieee80211_rate *rates)
3308 {
3309         int i;
3310
3311         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3312                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3313                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3314                 rates[i].hw_value_short = i;
3315                 rates[i].flags = 0;
3316                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3317                         /*
3318                          * If CCK != 1M then set short preamble rate flag.
3319                          */
3320                         rates[i].flags |=
3321                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3322                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3323                 }
3324         }
3325 }
3326
3327 static int iwl_init_drv(struct iwl_priv *priv)
3328 {
3329         int ret;
3330
3331         spin_lock_init(&priv->sta_lock);
3332         spin_lock_init(&priv->hcmd_lock);
3333
3334         mutex_init(&priv->mutex);
3335
3336         priv->ieee_channels = NULL;
3337         priv->ieee_rates = NULL;
3338         priv->band = IEEE80211_BAND_2GHZ;
3339
3340         priv->iw_mode = NL80211_IFTYPE_STATION;
3341         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3342         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3343         priv->_agn.agg_tids_count = 0;
3344
3345         /* initialize force reset */
3346         priv->force_reset[IWL_RF_RESET].reset_duration =
3347                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3348         priv->force_reset[IWL_FW_RESET].reset_duration =
3349                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3350
3351         priv->rx_statistics_jiffies = jiffies;
3352
3353         /* Choose which receivers/antennas to use */
3354         if (priv->cfg->ops->hcmd->set_rxon_chain)
3355                 priv->cfg->ops->hcmd->set_rxon_chain(priv,
3356                                         &priv->contexts[IWL_RXON_CTX_BSS]);
3357
3358         iwl_init_scan_params(priv);
3359
3360         /* init bt coex */
3361         if (priv->cfg->bt_params &&
3362             priv->cfg->bt_params->advanced_bt_coexist) {
3363                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3364                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3365                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3366                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3367                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3368                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3369         }
3370
3371         ret = iwl_init_channel_map(priv);
3372         if (ret) {
3373                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3374                 goto err;
3375         }
3376
3377         ret = iwlcore_init_geos(priv);
3378         if (ret) {
3379                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3380                 goto err_free_channel_map;
3381         }
3382         iwl_init_hw_rates(priv, priv->ieee_rates);
3383
3384         return 0;
3385
3386 err_free_channel_map:
3387         iwl_free_channel_map(priv);
3388 err:
3389         return ret;
3390 }
3391
3392 static void iwl_uninit_drv(struct iwl_priv *priv)
3393 {
3394         iwl_calib_free_results(priv);
3395         iwlcore_free_geos(priv);
3396         iwl_free_channel_map(priv);
3397         kfree(priv->scan_cmd);
3398 }
3399
3400 struct ieee80211_ops iwlagn_hw_ops = {
3401         .tx = iwlagn_mac_tx,
3402         .start = iwlagn_mac_start,
3403         .stop = iwlagn_mac_stop,
3404         .add_interface = iwl_mac_add_interface,
3405         .remove_interface = iwl_mac_remove_interface,
3406         .change_interface = iwl_mac_change_interface,
3407         .config = iwlagn_mac_config,
3408         .configure_filter = iwlagn_configure_filter,
3409         .set_key = iwlagn_mac_set_key,
3410         .update_tkip_key = iwlagn_mac_update_tkip_key,
3411         .conf_tx = iwl_mac_conf_tx,
3412         .bss_info_changed = iwlagn_bss_info_changed,
3413         .ampdu_action = iwlagn_mac_ampdu_action,
3414         .hw_scan = iwl_mac_hw_scan,
3415         .sta_notify = iwlagn_mac_sta_notify,
3416         .sta_add = iwlagn_mac_sta_add,
3417         .sta_remove = iwl_mac_sta_remove,
3418         .channel_switch = iwlagn_mac_channel_switch,
3419         .flush = iwlagn_mac_flush,
3420         .tx_last_beacon = iwl_mac_tx_last_beacon,
3421         .remain_on_channel = iwl_mac_remain_on_channel,
3422         .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3423         .offchannel_tx = iwl_mac_offchannel_tx,
3424         .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
3425         CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3426 };
3427
3428 static u32 iwl_hw_detect(struct iwl_priv *priv)
3429 {
3430         u8 rev_id;
3431
3432         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
3433         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
3434         return iwl_read32(priv, CSR_HW_REV);
3435 }
3436
3437 static int iwl_set_hw_params(struct iwl_priv *priv)
3438 {
3439         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3440         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3441         if (iwlagn_mod_params.amsdu_size_8K)
3442                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3443         else
3444                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3445
3446         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3447
3448         if (iwlagn_mod_params.disable_11n)
3449                 priv->cfg->sku &= ~IWL_SKU_N;
3450
3451         /* Device-specific setup */
3452         return priv->cfg->ops->lib->set_hw_params(priv);
3453 }
3454
3455 static const u8 iwlagn_bss_ac_to_fifo[] = {
3456         IWL_TX_FIFO_VO,
3457         IWL_TX_FIFO_VI,
3458         IWL_TX_FIFO_BE,
3459         IWL_TX_FIFO_BK,
3460 };
3461
3462 static const u8 iwlagn_bss_ac_to_queue[] = {
3463         0, 1, 2, 3,
3464 };
3465
3466 static const u8 iwlagn_pan_ac_to_fifo[] = {
3467         IWL_TX_FIFO_VO_IPAN,
3468         IWL_TX_FIFO_VI_IPAN,
3469         IWL_TX_FIFO_BE_IPAN,
3470         IWL_TX_FIFO_BK_IPAN,
3471 };
3472
3473 static const u8 iwlagn_pan_ac_to_queue[] = {
3474         7, 6, 5, 4,
3475 };
3476
3477 /* This function both allocates and initializes hw and priv. */
3478 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3479 {
3480         struct iwl_priv *priv;
3481         /* mac80211 allocates memory for this device instance, including
3482          *   space for this driver's private structure */
3483         struct ieee80211_hw *hw;
3484
3485         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3486         if (hw == NULL) {
3487                 pr_err("%s: Can not allocate network device\n",
3488                        cfg->name);
3489                 goto out;
3490         }
3491
3492         priv = hw->priv;
3493         priv->hw = hw;
3494
3495 out:
3496         return hw;
3497 }
3498
3499 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3500 {
3501         int err = 0, i;
3502         struct iwl_priv *priv;
3503         struct ieee80211_hw *hw;
3504         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3505         unsigned long flags;
3506         u16 pci_cmd, num_mac;
3507         u32 hw_rev;
3508
3509         /************************
3510          * 1. Allocating HW data
3511          ************************/
3512
3513         hw = iwl_alloc_all(cfg);
3514         if (!hw) {
3515                 err = -ENOMEM;
3516                 goto out;
3517         }
3518         priv = hw->priv;
3519         /* At this point both hw and priv are allocated. */
3520
3521         priv->ucode_type = UCODE_SUBTYPE_NONE_LOADED;
3522
3523         /*
3524          * The default context is always valid,
3525          * more may be discovered when firmware
3526          * is loaded.
3527          */
3528         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3529
3530         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3531                 priv->contexts[i].ctxid = i;
3532
3533         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3534         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3535         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3536         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3537         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3538         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3539         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3540         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3541         priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3542         priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
3543         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
3544                 BIT(NL80211_IFTYPE_ADHOC);
3545         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3546                 BIT(NL80211_IFTYPE_STATION);
3547         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
3548         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3549         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3550         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3551
3552         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
3553         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING;
3554         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC;
3555         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
3556         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
3557         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
3558         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
3559         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
3560         priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
3561         priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
3562         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
3563         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
3564                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
3565 #ifdef CONFIG_IWL_P2P
3566         priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
3567                 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
3568 #endif
3569         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
3570         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
3571         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
3572
3573         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
3574
3575         SET_IEEE80211_DEV(hw, &pdev->dev);
3576
3577         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3578         priv->cfg = cfg;
3579         priv->pci_dev = pdev;
3580         priv->inta_mask = CSR_INI_SET_MASK;
3581
3582         /* is antenna coupling more than 35dB ? */
3583         priv->bt_ant_couple_ok =
3584                 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3585                 true : false;
3586
3587         /* enable/disable bt channel inhibition */
3588         priv->bt_ch_announce = iwlagn_bt_ch_announce;
3589         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3590                        (priv->bt_ch_announce) ? "On" : "Off");
3591
3592         if (iwl_alloc_traffic_mem(priv))
3593                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3594
3595         /**************************
3596          * 2. Initializing PCI bus
3597          **************************/
3598         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
3599                                 PCIE_LINK_STATE_CLKPM);
3600
3601         if (pci_enable_device(pdev)) {
3602                 err = -ENODEV;
3603                 goto out_ieee80211_free_hw;
3604         }
3605
3606         pci_set_master(pdev);
3607
3608         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3609         if (!err)
3610                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3611         if (err) {
3612                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3613                 if (!err)
3614                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3615                 /* both attempts failed: */
3616                 if (err) {
3617                         IWL_WARN(priv, "No suitable DMA available.\n");
3618                         goto out_pci_disable_device;
3619                 }
3620         }
3621
3622         err = pci_request_regions(pdev, DRV_NAME);
3623         if (err)
3624                 goto out_pci_disable_device;
3625
3626         pci_set_drvdata(pdev, priv);
3627
3628
3629         /***********************
3630          * 3. Read REV register
3631          ***********************/
3632         priv->hw_base = pci_iomap(pdev, 0, 0);
3633         if (!priv->hw_base) {
3634                 err = -ENODEV;
3635                 goto out_pci_release_regions;
3636         }
3637
3638         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3639                 (unsigned long long) pci_resource_len(pdev, 0));
3640         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3641
3642         /* these spin locks will be used in apm_ops.init and EEPROM access
3643          * we should init now
3644          */
3645         spin_lock_init(&priv->reg_lock);
3646         spin_lock_init(&priv->lock);
3647
3648         /*
3649          * stop and reset the on-board processor just in case it is in a
3650          * strange state ... like being left stranded by a primary kernel
3651          * and this is now the kdump kernel trying to start up
3652          */
3653         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3654
3655         hw_rev = iwl_hw_detect(priv);
3656         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3657                 priv->cfg->name, hw_rev);
3658
3659         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3660          * PCI Tx retries from interfering with C3 CPU state */
3661         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3662
3663         if (iwl_prepare_card_hw(priv)) {
3664                 IWL_WARN(priv, "Failed, HW not ready\n");
3665                 goto out_iounmap;
3666         }
3667
3668         /*****************
3669          * 4. Read EEPROM
3670          *****************/
3671         /* Read the EEPROM */
3672         err = iwl_eeprom_init(priv, hw_rev);
3673         if (err) {
3674                 IWL_ERR(priv, "Unable to init EEPROM\n");
3675                 goto out_iounmap;
3676         }
3677         err = iwl_eeprom_check_version(priv);
3678         if (err)
3679                 goto out_free_eeprom;
3680
3681         err = iwl_eeprom_check_sku(priv);
3682         if (err)
3683                 goto out_free_eeprom;
3684
3685         /* extract MAC Address */
3686         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3687         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3688         priv->hw->wiphy->addresses = priv->addresses;
3689         priv->hw->wiphy->n_addresses = 1;
3690         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3691         if (num_mac > 1) {
3692                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3693                        ETH_ALEN);
3694                 priv->addresses[1].addr[5]++;
3695                 priv->hw->wiphy->n_addresses++;
3696         }
3697
3698         /************************
3699          * 5. Setup HW constants
3700          ************************/
3701         if (iwl_set_hw_params(priv)) {
3702                 IWL_ERR(priv, "failed to set hw parameters\n");
3703                 goto out_free_eeprom;
3704         }
3705
3706         /*******************
3707          * 6. Setup priv
3708          *******************/
3709
3710         err = iwl_init_drv(priv);
3711         if (err)
3712                 goto out_free_eeprom;
3713         /* At this point both hw and priv are initialized. */
3714
3715         /********************
3716          * 7. Setup services
3717          ********************/
3718         spin_lock_irqsave(&priv->lock, flags);
3719         iwl_disable_interrupts(priv);
3720         spin_unlock_irqrestore(&priv->lock, flags);
3721
3722         pci_enable_msi(priv->pci_dev);
3723
3724         iwl_alloc_isr_ict(priv);
3725
3726         err = request_irq(priv->pci_dev->irq, iwl_isr_ict,
3727                           IRQF_SHARED, DRV_NAME, priv);
3728         if (err) {
3729                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3730                 goto out_disable_msi;
3731         }
3732
3733         iwl_setup_deferred_work(priv);
3734         iwl_setup_rx_handlers(priv);
3735         iwl_testmode_init(priv);
3736
3737         /*********************************************
3738          * 8. Enable interrupts and read RFKILL state
3739          *********************************************/
3740
3741         /* enable rfkill interrupt: hw bug w/a */
3742         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3743         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3744                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3745                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3746         }
3747
3748         iwl_enable_rfkill_int(priv);
3749
3750         /* If platform's RF_KILL switch is NOT set to KILL */
3751         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3752                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3753         else
3754                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3755
3756         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3757                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3758
3759         iwl_power_initialize(priv);
3760         iwl_tt_initialize(priv);
3761
3762         init_completion(&priv->_agn.firmware_loading_complete);
3763
3764         err = iwl_request_firmware(priv, true);
3765         if (err)
3766                 goto out_destroy_workqueue;
3767
3768         return 0;
3769
3770  out_destroy_workqueue:
3771         destroy_workqueue(priv->workqueue);
3772         priv->workqueue = NULL;
3773         free_irq(priv->pci_dev->irq, priv);
3774         iwl_free_isr_ict(priv);
3775  out_disable_msi:
3776         pci_disable_msi(priv->pci_dev);
3777         iwl_uninit_drv(priv);
3778  out_free_eeprom:
3779         iwl_eeprom_free(priv);
3780  out_iounmap:
3781         pci_iounmap(pdev, priv->hw_base);
3782  out_pci_release_regions:
3783         pci_set_drvdata(pdev, NULL);
3784         pci_release_regions(pdev);
3785  out_pci_disable_device:
3786         pci_disable_device(pdev);
3787  out_ieee80211_free_hw:
3788         iwl_free_traffic_mem(priv);
3789         ieee80211_free_hw(priv->hw);
3790  out:
3791         return err;
3792 }
3793
3794 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3795 {
3796         struct iwl_priv *priv = pci_get_drvdata(pdev);
3797         unsigned long flags;
3798
3799         if (!priv)
3800                 return;
3801
3802         wait_for_completion(&priv->_agn.firmware_loading_complete);
3803
3804         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3805
3806         iwl_dbgfs_unregister(priv);
3807         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3808
3809         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3810          * to be called and iwl_down since we are removing the device
3811          * we need to set STATUS_EXIT_PENDING bit.
3812          */
3813         set_bit(STATUS_EXIT_PENDING, &priv->status);
3814
3815         iwl_leds_exit(priv);
3816
3817         if (priv->mac80211_registered) {
3818                 ieee80211_unregister_hw(priv->hw);
3819                 priv->mac80211_registered = 0;
3820         }
3821
3822         /* Reset to low power before unloading driver. */
3823         iwl_apm_stop(priv);
3824
3825         iwl_tt_exit(priv);
3826
3827         /* make sure we flush any pending irq or
3828          * tasklet for the driver
3829          */
3830         spin_lock_irqsave(&priv->lock, flags);
3831         iwl_disable_interrupts(priv);
3832         spin_unlock_irqrestore(&priv->lock, flags);
3833
3834         iwl_synchronize_irq(priv);
3835
3836         iwl_dealloc_ucode_pci(priv);
3837
3838         if (priv->rxq.bd)
3839                 iwlagn_rx_queue_free(priv, &priv->rxq);
3840         iwlagn_hw_txq_ctx_free(priv);
3841
3842         iwl_eeprom_free(priv);
3843
3844
3845         /*netif_stop_queue(dev); */
3846         flush_workqueue(priv->workqueue);
3847
3848         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3849          * priv->workqueue... so we can't take down the workqueue
3850          * until now... */
3851         destroy_workqueue(priv->workqueue);
3852         priv->workqueue = NULL;
3853         iwl_free_traffic_mem(priv);
3854
3855         free_irq(priv->pci_dev->irq, priv);
3856         pci_disable_msi(priv->pci_dev);
3857         pci_iounmap(pdev, priv->hw_base);
3858         pci_release_regions(pdev);
3859         pci_disable_device(pdev);
3860         pci_set_drvdata(pdev, NULL);
3861
3862         iwl_uninit_drv(priv);
3863
3864         iwl_free_isr_ict(priv);
3865
3866         dev_kfree_skb(priv->beacon_skb);
3867
3868         ieee80211_free_hw(priv->hw);
3869 }
3870
3871
3872 /*****************************************************************************
3873  *
3874  * driver and module entry point
3875  *
3876  *****************************************************************************/
3877
3878 /* Hardware specific file defines the PCI IDs table for that hardware module */
3879 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
3880         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
3881         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
3882         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
3883         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
3884         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
3885         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
3886         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
3887         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
3888         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
3889         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
3890         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
3891         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
3892         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
3893         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
3894         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
3895         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
3896         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
3897         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
3898         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
3899         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
3900         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
3901         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
3902         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
3903         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
3904
3905 /* 5300 Series WiFi */
3906         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
3907         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
3908         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
3909         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
3910         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
3911         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
3912         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
3913         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
3914         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
3915         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
3916         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
3917         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
3918
3919 /* 5350 Series WiFi/WiMax */
3920         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
3921         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
3922         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
3923
3924 /* 5150 Series Wifi/WiMax */
3925         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
3926         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
3927         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
3928         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
3929         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
3930         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
3931
3932         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
3933         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
3934         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
3935         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
3936
3937 /* 6x00 Series */
3938         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3939         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3940         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3941         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3942         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3943         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3944         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3945         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3946         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3947         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3948
3949 /* 6x05 Series */
3950         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)},
3951         {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)},
3952         {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)},
3953         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)},
3954         {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)},
3955         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)},
3956         {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)},
3957
3958 /* 6x30 Series */
3959         {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)},
3960         {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)},
3961         {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)},
3962         {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)},
3963         {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)},
3964         {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)},
3965         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)},
3966         {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)},
3967         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)},
3968         {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)},
3969         {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)},
3970         {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)},
3971         {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)},
3972         {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)},
3973         {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)},
3974         {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)},
3975
3976 /* 6x50 WiFi/WiMax Series */
3977         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3978         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3979         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3980         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3981         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3982         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3983
3984 /* 6150 WiFi/WiMax Series */
3985         {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)},
3986         {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6150_bgn_cfg)},
3987         {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)},
3988         {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6150_bgn_cfg)},
3989         {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)},
3990         {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6150_bgn_cfg)},
3991
3992 /* 1000 Series WiFi */
3993         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3994         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3995         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3996         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3997         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3998         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3999         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4000         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4001         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4002         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4003         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4004         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4005
4006 /* 100 Series WiFi */
4007         {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
4008         {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
4009         {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
4010         {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)},
4011         {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
4012         {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)},
4013
4014 /* 130 Series WiFi */
4015         {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
4016         {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
4017         {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
4018         {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
4019         {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
4020         {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
4021
4022 /* 2x00 Series */
4023         {IWL_PCI_DEVICE(0x0890, 0x4022, iwl2000_2bgn_cfg)},
4024         {IWL_PCI_DEVICE(0x0891, 0x4222, iwl2000_2bgn_cfg)},
4025         {IWL_PCI_DEVICE(0x0890, 0x4422, iwl2000_2bgn_cfg)},
4026         {IWL_PCI_DEVICE(0x0890, 0x4026, iwl2000_2bg_cfg)},
4027         {IWL_PCI_DEVICE(0x0891, 0x4226, iwl2000_2bg_cfg)},
4028         {IWL_PCI_DEVICE(0x0890, 0x4426, iwl2000_2bg_cfg)},
4029
4030 /* 2x30 Series */
4031         {IWL_PCI_DEVICE(0x0887, 0x4062, iwl2030_2bgn_cfg)},
4032         {IWL_PCI_DEVICE(0x0888, 0x4262, iwl2030_2bgn_cfg)},
4033         {IWL_PCI_DEVICE(0x0887, 0x4462, iwl2030_2bgn_cfg)},
4034         {IWL_PCI_DEVICE(0x0887, 0x4066, iwl2030_2bg_cfg)},
4035         {IWL_PCI_DEVICE(0x0888, 0x4266, iwl2030_2bg_cfg)},
4036         {IWL_PCI_DEVICE(0x0887, 0x4466, iwl2030_2bg_cfg)},
4037
4038 /* 6x35 Series */
4039         {IWL_PCI_DEVICE(0x088E, 0x4060, iwl6035_2agn_cfg)},
4040         {IWL_PCI_DEVICE(0x088F, 0x4260, iwl6035_2agn_cfg)},
4041         {IWL_PCI_DEVICE(0x088E, 0x4460, iwl6035_2agn_cfg)},
4042         {IWL_PCI_DEVICE(0x088E, 0x4064, iwl6035_2abg_cfg)},
4043         {IWL_PCI_DEVICE(0x088F, 0x4264, iwl6035_2abg_cfg)},
4044         {IWL_PCI_DEVICE(0x088E, 0x4464, iwl6035_2abg_cfg)},
4045         {IWL_PCI_DEVICE(0x088E, 0x4066, iwl6035_2bg_cfg)},
4046         {IWL_PCI_DEVICE(0x088F, 0x4266, iwl6035_2bg_cfg)},
4047         {IWL_PCI_DEVICE(0x088E, 0x4466, iwl6035_2bg_cfg)},
4048
4049 /* 105 Series */
4050         {IWL_PCI_DEVICE(0x0894, 0x0022, iwl105_bgn_cfg)},
4051         {IWL_PCI_DEVICE(0x0895, 0x0222, iwl105_bgn_cfg)},
4052         {IWL_PCI_DEVICE(0x0894, 0x0422, iwl105_bgn_cfg)},
4053         {IWL_PCI_DEVICE(0x0894, 0x0026, iwl105_bg_cfg)},
4054         {IWL_PCI_DEVICE(0x0895, 0x0226, iwl105_bg_cfg)},
4055         {IWL_PCI_DEVICE(0x0894, 0x0426, iwl105_bg_cfg)},
4056
4057 /* 135 Series */
4058         {IWL_PCI_DEVICE(0x0892, 0x0062, iwl135_bgn_cfg)},
4059         {IWL_PCI_DEVICE(0x0893, 0x0262, iwl135_bgn_cfg)},
4060         {IWL_PCI_DEVICE(0x0892, 0x0462, iwl135_bgn_cfg)},
4061         {IWL_PCI_DEVICE(0x0892, 0x0066, iwl135_bg_cfg)},
4062         {IWL_PCI_DEVICE(0x0893, 0x0266, iwl135_bg_cfg)},
4063         {IWL_PCI_DEVICE(0x0892, 0x0466, iwl135_bg_cfg)},
4064
4065         {0}
4066 };
4067 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4068
4069 static struct pci_driver iwl_driver = {
4070         .name = DRV_NAME,
4071         .id_table = iwl_hw_card_ids,
4072         .probe = iwl_pci_probe,
4073         .remove = __devexit_p(iwl_pci_remove),
4074         .driver.pm = IWL_PM_OPS,
4075 };
4076
4077 static int __init iwl_init(void)
4078 {
4079
4080         int ret;
4081         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4082         pr_info(DRV_COPYRIGHT "\n");
4083
4084         ret = iwlagn_rate_control_register();
4085         if (ret) {
4086                 pr_err("Unable to register rate control algorithm: %d\n", ret);
4087                 return ret;
4088         }
4089
4090         ret = pci_register_driver(&iwl_driver);
4091         if (ret) {
4092                 pr_err("Unable to initialize PCI module\n");
4093                 goto error_register;
4094         }
4095
4096         return ret;
4097
4098 error_register:
4099         iwlagn_rate_control_unregister();
4100         return ret;
4101 }
4102
4103 static void __exit iwl_exit(void)
4104 {
4105         pci_unregister_driver(&iwl_driver);
4106         iwlagn_rate_control_unregister();
4107 }
4108
4109 module_exit(iwl_exit);
4110 module_init(iwl_init);
4111
4112 #ifdef CONFIG_IWLWIFI_DEBUG
4113 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4114 MODULE_PARM_DESC(debug, "debug output mask");
4115 #endif
4116
4117 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4118 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4119 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4120 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4121 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4122 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4123 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4124                    int, S_IRUGO);
4125 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4126 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4127 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4128
4129 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4130                    S_IRUGO);
4131 MODULE_PARM_DESC(ucode_alternative,
4132                  "specify ucode alternative to use from ucode file");
4133
4134 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4135 MODULE_PARM_DESC(antenna_coupling,
4136                  "specify antenna coupling in dB (defualt: 0 dB)");
4137
4138 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
4139 MODULE_PARM_DESC(bt_ch_inhibition,
4140                  "Disable BT channel inhibition (default: enable)");
4141
4142 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
4143 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
4144
4145 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
4146 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");