main.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/******************************************************************************
   3 *
   4 * Copyright(c) 2003 - 2014, 2018 - 2022 Intel Corporation. All rights reserved.
   5 * Copyright(c) 2024-2025 Intel Corporation. All rights reserved.
   6 * Copyright(c) 2015 Intel Deutschland GmbH
   7 *
   8 * Portions of this file are derived from the ipw3945 project, as well
   9 * as portions of the ieee80211 subsystem header files.
  10 *****************************************************************************/
  11
  12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  13
  14#include <linux/kernel.h>
  15#include <linux/module.h>
  16#include <linux/init.h>
  17#include <linux/slab.h>
  18#include <linux/delay.h>
  19#include <linux/sched.h>
  20#include <linux/skbuff.h>
  21#include <linux/netdevice.h>
  22#include <linux/etherdevice.h>
  23#include <linux/if_arp.h>
  24
  25#include <net/mac80211.h>
  26
  27#include <asm/div64.h>
  28
  29#include "iwl-nvm-utils.h"
  30#include "iwl-io.h"
  31#include "iwl-trans.h"
  32#include "iwl-op-mode.h"
  33#include "iwl-drv.h"
  34#include "iwl-modparams.h"
  35#include "iwl-prph.h"
  36
  37#include "dev.h"
  38#include "calib.h"
  39#include "agn.h"
  40
  41
  42/******************************************************************************
  43 *
  44 * module boiler plate
  45 *
  46 ******************************************************************************/
  47
  48#define DRV_DESCRIPTION	"Intel(R) Wireless WiFi Link AGN driver for Linux"
  49MODULE_DESCRIPTION(DRV_DESCRIPTION);
  50MODULE_LICENSE("GPL");
  51MODULE_IMPORT_NS("IWLWIFI");
  52
  53/* Please keep this array *SORTED* by hex value.
  54 * Access is done through binary search.
  55 * A warning will be triggered on violation.
  56 */
  57static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = {
  58	HCMD_NAME(REPLY_ALIVE),
  59	HCMD_NAME(REPLY_ERROR),
  60	HCMD_NAME(REPLY_ECHO),
  61	HCMD_NAME(REPLY_RXON),
  62	HCMD_NAME(REPLY_RXON_ASSOC),
  63	HCMD_NAME(REPLY_QOS_PARAM),
  64	HCMD_NAME(REPLY_RXON_TIMING),
  65	HCMD_NAME(REPLY_ADD_STA),
  66	HCMD_NAME(REPLY_REMOVE_STA),
  67	HCMD_NAME(REPLY_REMOVE_ALL_STA),
  68	HCMD_NAME(REPLY_TX),
  69	HCMD_NAME(REPLY_TXFIFO_FLUSH),
  70	HCMD_NAME(REPLY_WEPKEY),
  71	HCMD_NAME(REPLY_LEDS_CMD),
  72	HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD),
  73	HCMD_NAME(COEX_PRIORITY_TABLE_CMD),
  74	HCMD_NAME(COEX_MEDIUM_NOTIFICATION),
  75	HCMD_NAME(COEX_EVENT_CMD),
  76	HCMD_NAME(TEMPERATURE_NOTIFICATION),
  77	HCMD_NAME(CALIBRATION_CFG_CMD),
  78	HCMD_NAME(CALIBRATION_RES_NOTIFICATION),
  79	HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION),
  80	HCMD_NAME(REPLY_QUIET_CMD),
  81	HCMD_NAME(REPLY_CHANNEL_SWITCH),
  82	HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION),
  83	HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD),
  84	HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION),
  85	HCMD_NAME(POWER_TABLE_CMD),
  86	HCMD_NAME(PM_SLEEP_NOTIFICATION),
  87	HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC),
  88	HCMD_NAME(REPLY_SCAN_CMD),
  89	HCMD_NAME(REPLY_SCAN_ABORT_CMD),
  90	HCMD_NAME(SCAN_START_NOTIFICATION),
  91	HCMD_NAME(SCAN_RESULTS_NOTIFICATION),
  92	HCMD_NAME(SCAN_COMPLETE_NOTIFICATION),
  93	HCMD_NAME(BEACON_NOTIFICATION),
  94	HCMD_NAME(REPLY_TX_BEACON),
  95	HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION),
  96	HCMD_NAME(REPLY_TX_POWER_DBM_CMD),
  97	HCMD_NAME(QUIET_NOTIFICATION),
  98	HCMD_NAME(REPLY_TX_PWR_TABLE_CMD),
  99	HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1),
 100	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 101	HCMD_NAME(MEASURE_ABORT_NOTIFICATION),
 102	HCMD_NAME(REPLY_BT_CONFIG),
 103	HCMD_NAME(REPLY_STATISTICS_CMD),
 104	HCMD_NAME(STATISTICS_NOTIFICATION),
 105	HCMD_NAME(REPLY_CARD_STATE_CMD),
 106	HCMD_NAME(CARD_STATE_NOTIFICATION),
 107	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 108	HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD),
 109	HCMD_NAME(SENSITIVITY_CMD),
 110	HCMD_NAME(REPLY_PHY_CALIBRATION_CMD),
 111	HCMD_NAME(REPLY_WIPAN_PARAMS),
 112	HCMD_NAME(REPLY_WIPAN_RXON),
 113	HCMD_NAME(REPLY_WIPAN_RXON_TIMING),
 114	HCMD_NAME(REPLY_WIPAN_RXON_ASSOC),
 115	HCMD_NAME(REPLY_WIPAN_QOS_PARAM),
 116	HCMD_NAME(REPLY_WIPAN_WEPKEY),
 117	HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH),
 118	HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION),
 119	HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE),
 120	HCMD_NAME(REPLY_RX_PHY_CMD),
 121	HCMD_NAME(REPLY_RX_MPDU_CMD),
 122	HCMD_NAME(REPLY_RX),
 123	HCMD_NAME(REPLY_COMPRESSED_BA),
 124	HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE),
 125	HCMD_NAME(REPLY_BT_COEX_PROT_ENV),
 126	HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF),
 127	HCMD_NAME(REPLY_D3_CONFIG),
 128	HCMD_NAME(REPLY_WOWLAN_PATTERNS),
 129	HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER),
 130	HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS),
 131	HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS),
 132	HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL),
 133	HCMD_NAME(REPLY_WOWLAN_GET_STATUS),
 134};
 135
 136static const struct iwl_hcmd_arr iwl_dvm_groups[] = {
 137	[0x0] = HCMD_ARR(iwl_dvm_cmd_names),
 138};
 139
 140static const struct iwl_op_mode_ops iwl_dvm_ops;
 141
 142void iwl_update_chain_flags(struct iwl_priv *priv)
 143{
 144	struct iwl_rxon_context *ctx;
 145
 146	for_each_context(priv, ctx) {
 147		iwlagn_set_rxon_chain(priv, ctx);
 148		if (ctx->active.rx_chain != ctx->staging.rx_chain)
 149			iwlagn_commit_rxon(priv, ctx);
 150	}
 151}
 152
 153/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 154static void iwl_set_beacon_tim(struct iwl_priv *priv,
 155			       struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 156			       u8 *beacon, u32 frame_size)
 157{
 158	u16 tim_idx;
 159	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 160
 161	/*
 162	 * The index is relative to frame start but we start looking at the
 163	 * variable-length part of the beacon.
 164	 */
 165	tim_idx = mgmt->u.beacon.variable - beacon;
 166
 167	/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 168	while ((tim_idx < (frame_size - 2)) &&
 169			(beacon[tim_idx] != WLAN_EID_TIM))
 170		tim_idx += beacon[tim_idx+1] + 2;
 171
 172	/* If TIM field was found, set variables */
 173	if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 174		tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 175		tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 176	} else
 177		IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 178}
 179
 180int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 181{
 182	struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 183	struct iwl_host_cmd cmd = {
 184		.id = REPLY_TX_BEACON,
 185	};
 186	struct ieee80211_tx_info *info;
 187	u32 frame_size;
 188	u32 rate_flags;
 189	u32 rate;
 190
 191	/*
 192	 * We have to set up the TX command, the TX Beacon command, and the
 193	 * beacon contents.
 194	 */
 195
 196	lockdep_assert_held(&priv->mutex);
 197
 198	if (!priv->beacon_ctx) {
 199		IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 200		return 0;
 201	}
 202
 203	if (WARN_ON(!priv->beacon_skb))
 204		return -EINVAL;
 205
 206	/* Allocate beacon command */
 207	if (!priv->beacon_cmd)
 208		priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 209	tx_beacon_cmd = priv->beacon_cmd;
 210	if (!tx_beacon_cmd)
 211		return -ENOMEM;
 212
 213	frame_size = priv->beacon_skb->len;
 214
 215	/* Set up TX command fields */
 216	tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 217	tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 218	tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 219	tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 220		TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 221
 222	/* Set up TX beacon command fields */
 223	iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 224			   frame_size);
 225
 226	/* Set up packet rate and flags */
 227	info = IEEE80211_SKB_CB(priv->beacon_skb);
 228
 229	/*
 230	 * Let's set up the rate at least somewhat correctly;
 231	 * it will currently not actually be used by the uCode,
 232	 * it uses the broadcast station's rate instead.
 233	 */
 234	if (info->control.rates[0].idx < 0 ||
 235	    info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 236		rate = 0;
 237	else
 238		rate = info->control.rates[0].idx;
 239
 240	priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 241					      priv->nvm_data->valid_tx_ant);
 242	rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 243
 244	/* In mac80211, rates for 5 GHz start at 0 */
 245	if (info->band == NL80211_BAND_5GHZ)
 246		rate += IWL_FIRST_OFDM_RATE;
 247	else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 248		rate_flags |= RATE_MCS_CCK_MSK;
 249
 250	tx_beacon_cmd->tx.rate_n_flags =
 251			iwl_hw_set_rate_n_flags(rate, rate_flags);
 252
 253	/* Submit command */
 254	cmd.len[0] = sizeof(*tx_beacon_cmd);
 255	cmd.data[0] = tx_beacon_cmd;
 256	cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 257	cmd.len[1] = frame_size;
 258	cmd.data[1] = priv->beacon_skb->data;
 259	cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 260
 261	return iwl_dvm_send_cmd(priv, &cmd);
 262}
 263
 264static void iwl_bg_beacon_update(struct work_struct *work)
 265{
 266	struct iwl_priv *priv =
 267		container_of(work, struct iwl_priv, beacon_update);
 268	struct sk_buff *beacon;
 269
 270	mutex_lock(&priv->mutex);
 271	if (!priv->beacon_ctx) {
 272		IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 273		goto out;
 274	}
 275
 276	if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 277		/*
 278		 * The ucode will send beacon notifications even in
 279		 * IBSS mode, but we don't want to process them. But
 280		 * we need to defer the type check to here due to
 281		 * requiring locking around the beacon_ctx access.
 282		 */
 283		goto out;
 284	}
 285
 286	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 287	beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif, 0);
 288	if (!beacon) {
 289		IWL_ERR(priv, "update beacon failed -- keeping old\n");
 290		goto out;
 291	}
 292
 293	/* new beacon skb is allocated every time; dispose previous.*/
 294	dev_kfree_skb(priv->beacon_skb);
 295
 296	priv->beacon_skb = beacon;
 297
 298	iwlagn_send_beacon_cmd(priv);
 299 out:
 300	mutex_unlock(&priv->mutex);
 301}
 302
 303static void iwl_bg_bt_runtime_config(struct work_struct *work)
 304{
 305	struct iwl_priv *priv =
 306		container_of(work, struct iwl_priv, bt_runtime_config);
 307
 308	mutex_lock(&priv->mutex);
 309	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 310		goto out;
 311
 312	/* dont send host command if rf-kill is on */
 313	if (!iwl_is_ready_rf(priv))
 314		goto out;
 315
 316	iwlagn_send_advance_bt_config(priv);
 317out:
 318	mutex_unlock(&priv->mutex);
 319}
 320
 321static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 322{
 323	struct iwl_priv *priv =
 324		container_of(work, struct iwl_priv, bt_full_concurrency);
 325	struct iwl_rxon_context *ctx;
 326
 327	mutex_lock(&priv->mutex);
 328
 329	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 330		goto out;
 331
 332	/* dont send host command if rf-kill is on */
 333	if (!iwl_is_ready_rf(priv))
 334		goto out;
 335
 336	IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 337		       priv->bt_full_concurrent ?
 338		       "full concurrency" : "3-wire");
 339
 340	/*
 341	 * LQ & RXON updated cmds must be sent before BT Config cmd
 342	 * to avoid 3-wire collisions
 343	 */
 344	for_each_context(priv, ctx) {
 345		iwlagn_set_rxon_chain(priv, ctx);
 346		iwlagn_commit_rxon(priv, ctx);
 347	}
 348
 349	iwlagn_send_advance_bt_config(priv);
 350out:
 351	mutex_unlock(&priv->mutex);
 352}
 353
 354int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
 355{
 356	struct iwl_statistics_cmd statistics_cmd = {
 357		.configuration_flags =
 358			clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
 359	};
 360
 361	if (flags & CMD_ASYNC)
 362		return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 363					CMD_ASYNC,
 364					sizeof(struct iwl_statistics_cmd),
 365					&statistics_cmd);
 366	else
 367		return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0,
 368					sizeof(struct iwl_statistics_cmd),
 369					&statistics_cmd);
 370}
 371
 372/*
 373 * iwl_bg_statistics_periodic - Timer callback to queue statistics
 374 *
 375 * This callback is provided in order to send a statistics request.
 376 *
 377 * This timer function is continually reset to execute within
 378 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 379 * was received.  We need to ensure we receive the statistics in order
 380 * to update the temperature used for calibrating the TXPOWER.
 381 */
 382static void iwl_bg_statistics_periodic(struct timer_list *t)
 383{
 384	struct iwl_priv *priv = timer_container_of(priv, t,
 385						   statistics_periodic);
 386
 387	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 388		return;
 389
 390	/* dont send host command if rf-kill is on */
 391	if (!iwl_is_ready_rf(priv))
 392		return;
 393
 394	iwl_send_statistics_request(priv, CMD_ASYNC, false);
 395}
 396
 397
 398static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 399					u32 start_idx, u32 num_events,
 400					u32 capacity, u32 mode)
 401{
 402	u32 i;
 403	u32 ptr;        /* SRAM byte address of log data */
 404	u32 ev, time, data; /* event log data */
 405
 406	if (mode == 0)
 407		ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 408	else
 409		ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 410
 411	/* Make sure device is powered up for SRAM reads */
 412	if (!iwl_trans_grab_nic_access(priv->trans))
 413		return;
 414
 415	/* Set starting address; reads will auto-increment */
 416	iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
 417
 418	/*
 419	 * Refuse to read more than would have fit into the log from
 420	 * the current start_idx. This used to happen due to the race
 421	 * described below, but now WARN because the code below should
 422	 * prevent it from happening here.
 423	 */
 424	if (WARN_ON(num_events > capacity - start_idx))
 425		num_events = capacity - start_idx;
 426
 427	/*
 428	 * "time" is actually "data" for mode 0 (no timestamp).
 429	 * place event id # at far right for easier visual parsing.
 430	 */
 431	for (i = 0; i < num_events; i++) {
 432		ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 433		time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 434		if (mode == 0) {
 435			trace_iwlwifi_dev_ucode_cont_event(
 436					priv->trans->dev, 0, time, ev);
 437		} else {
 438			data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 439			trace_iwlwifi_dev_ucode_cont_event(
 440					priv->trans->dev, time, data, ev);
 441		}
 442	}
 443	/* Allow device to power down */
 444	iwl_trans_release_nic_access(priv->trans);
 445}
 446
 447static void iwl_continuous_event_trace(struct iwl_priv *priv)
 448{
 449	u32 capacity;   /* event log capacity in # entries */
 450	struct {
 451		u32 capacity;
 452		u32 mode;
 453		u32 wrap_counter;
 454		u32 write_counter;
 455	} __packed read;
 456	u32 base;       /* SRAM byte address of event log header */
 457	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 458	u32 num_wraps;  /* # times uCode wrapped to top of log */
 459	u32 next_entry; /* index of next entry to be written by uCode */
 460
 461	base = priv->device_pointers.log_event_table;
 462	if (iwlagn_hw_valid_rtc_data_addr(base)) {
 463		iwl_trans_read_mem_bytes(priv->trans, base,
 464					 &read, sizeof(read));
 465		capacity = read.capacity;
 466		mode = read.mode;
 467		num_wraps = read.wrap_counter;
 468		next_entry = read.write_counter;
 469	} else
 470		return;
 471
 472	/*
 473	 * Unfortunately, the uCode doesn't use temporary variables.
 474	 * Therefore, it can happen that we read next_entry == capacity,
 475	 * which really means next_entry == 0.
 476	 */
 477	if (unlikely(next_entry == capacity))
 478		next_entry = 0;
 479	/*
 480	 * Additionally, the uCode increases the write pointer before
 481	 * the wraps counter, so if the write pointer is smaller than
 482	 * the old write pointer (wrap occurred) but we read that no
 483	 * wrap occurred, we actually read between the next_entry and
 484	 * num_wraps update (this does happen in practice!!) -- take
 485	 * that into account by increasing num_wraps.
 486	 */
 487	if (unlikely(next_entry < priv->event_log.next_entry &&
 488		     num_wraps == priv->event_log.num_wraps))
 489		num_wraps++;
 490
 491	if (num_wraps == priv->event_log.num_wraps) {
 492		iwl_print_cont_event_trace(
 493			priv, base, priv->event_log.next_entry,
 494			next_entry - priv->event_log.next_entry,
 495			capacity, mode);
 496
 497		priv->event_log.non_wraps_count++;
 498	} else {
 499		if (num_wraps - priv->event_log.num_wraps > 1)
 500			priv->event_log.wraps_more_count++;
 501		else
 502			priv->event_log.wraps_once_count++;
 503
 504		trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
 505				num_wraps - priv->event_log.num_wraps,
 506				next_entry, priv->event_log.next_entry);
 507
 508		if (next_entry < priv->event_log.next_entry) {
 509			iwl_print_cont_event_trace(
 510				priv, base, priv->event_log.next_entry,
 511				capacity - priv->event_log.next_entry,
 512				capacity, mode);
 513
 514			iwl_print_cont_event_trace(
 515				priv, base, 0, next_entry, capacity, mode);
 516		} else {
 517			iwl_print_cont_event_trace(
 518				priv, base, next_entry,
 519				capacity - next_entry,
 520				capacity, mode);
 521
 522			iwl_print_cont_event_trace(
 523				priv, base, 0, next_entry, capacity, mode);
 524		}
 525	}
 526
 527	priv->event_log.num_wraps = num_wraps;
 528	priv->event_log.next_entry = next_entry;
 529}
 530
 531/*
 532 * iwl_bg_ucode_trace - Timer callback to log ucode event
 533 *
 534 * The timer is continually set to execute every
 535 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 536 * this function is to perform continuous uCode event logging operation
 537 * if enabled
 538 */
 539static void iwl_bg_ucode_trace(struct timer_list *t)
 540{
 541	struct iwl_priv *priv = timer_container_of(priv, t, ucode_trace);
 542
 543	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 544		return;
 545
 546	if (priv->event_log.ucode_trace) {
 547		iwl_continuous_event_trace(priv);
 548		/* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 549		mod_timer(&priv->ucode_trace,
 550			 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 551	}
 552}
 553
 554static void iwl_bg_tx_flush(struct work_struct *work)
 555{
 556	struct iwl_priv *priv =
 557		container_of(work, struct iwl_priv, tx_flush);
 558
 559	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 560		return;
 561
 562	/* do nothing if rf-kill is on */
 563	if (!iwl_is_ready_rf(priv))
 564		return;
 565
 566	IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 567	iwlagn_dev_txfifo_flush(priv);
 568}
 569
 570/*
 571 * queue/FIFO/AC mapping definitions
 572 */
 573
 574static const u8 iwlagn_bss_ac_to_fifo[] = {
 575	IWL_TX_FIFO_VO,
 576	IWL_TX_FIFO_VI,
 577	IWL_TX_FIFO_BE,
 578	IWL_TX_FIFO_BK,
 579};
 580
 581static const u8 iwlagn_bss_ac_to_queue[] = {
 582	0, 1, 2, 3,
 583};
 584
 585static const u8 iwlagn_pan_ac_to_fifo[] = {
 586	IWL_TX_FIFO_VO_IPAN,
 587	IWL_TX_FIFO_VI_IPAN,
 588	IWL_TX_FIFO_BE_IPAN,
 589	IWL_TX_FIFO_BK_IPAN,
 590};
 591
 592static const u8 iwlagn_pan_ac_to_queue[] = {
 593	7, 6, 5, 4,
 594};
 595
 596static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 597{
 598	int i;
 599
 600	/*
 601	 * The default context is always valid,
 602	 * the PAN context depends on uCode.
 603	 */
 604	priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 605	if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 606		priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 607
 608	for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 609		priv->contexts[i].ctxid = i;
 610
 611	priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 612	priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 613	priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 614	priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 615	priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 616	priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 617	priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 618	priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 619	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 620	priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 621		BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
 622	priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 623		BIT(NL80211_IFTYPE_STATION);
 624	priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 625	priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 626	priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 627	priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 628	memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 629	       iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 630	memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 631	       iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 632
 633	priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 634	priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 635		REPLY_WIPAN_RXON_TIMING;
 636	priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 637		REPLY_WIPAN_RXON_ASSOC;
 638	priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 639	priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 640	priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 641	priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 642	priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 643	priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 644		BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 645
 646	priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 647	priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 648	priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 649	memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 650	       iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 651	memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 652	       iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 653	priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 654
 655	BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 656}
 657
 658static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 659{
 660	struct iwl_ct_kill_config cmd;
 661	struct iwl_ct_kill_throttling_config adv_cmd;
 662	int ret = 0;
 663
 664	iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
 665		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 666
 667	priv->thermal_throttle.ct_kill_toggle = false;
 668
 669	if (priv->lib->support_ct_kill_exit) {
 670		adv_cmd.critical_temperature_enter =
 671			cpu_to_le32(priv->hw_params.ct_kill_threshold);
 672		adv_cmd.critical_temperature_exit =
 673			cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 674
 675		ret = iwl_dvm_send_cmd_pdu(priv,
 676				       REPLY_CT_KILL_CONFIG_CMD,
 677				       0, sizeof(adv_cmd), &adv_cmd);
 678		if (ret)
 679			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 680		else
 681			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 682				"succeeded, critical temperature enter is %d,"
 683				"exit is %d\n",
 684				priv->hw_params.ct_kill_threshold,
 685				priv->hw_params.ct_kill_exit_threshold);
 686	} else {
 687		cmd.critical_temperature_R =
 688			cpu_to_le32(priv->hw_params.ct_kill_threshold);
 689
 690		ret = iwl_dvm_send_cmd_pdu(priv,
 691				       REPLY_CT_KILL_CONFIG_CMD,
 692				       0, sizeof(cmd), &cmd);
 693		if (ret)
 694			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 695		else
 696			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 697				"succeeded, "
 698				"critical temperature is %d\n",
 699				priv->hw_params.ct_kill_threshold);
 700	}
 701}
 702
 703static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 704{
 705	struct iwl_calib_cfg_cmd calib_cfg_cmd;
 706	struct iwl_host_cmd cmd = {
 707		.id = CALIBRATION_CFG_CMD,
 708		.len = { sizeof(struct iwl_calib_cfg_cmd), },
 709		.data = { &calib_cfg_cmd, },
 710	};
 711
 712	memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 713	calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 714	calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 715
 716	return iwl_dvm_send_cmd(priv, &cmd);
 717}
 718
 719
 720static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 721{
 722	struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 723	  .valid = cpu_to_le32(valid_tx_ant),
 724	};
 725
 726	if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 727		IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 728		return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0,
 729					sizeof(struct iwl_tx_ant_config_cmd),
 730					&tx_ant_cmd);
 731	} else {
 732		IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 733		return -EOPNOTSUPP;
 734	}
 735}
 736
 737static void iwl_send_bt_config(struct iwl_priv *priv)
 738{
 739	struct iwl_bt_cmd bt_cmd = {
 740		.lead_time = BT_LEAD_TIME_DEF,
 741		.max_kill = BT_MAX_KILL_DEF,
 742		.kill_ack_mask = 0,
 743		.kill_cts_mask = 0,
 744	};
 745
 746	if (!iwlwifi_mod_params.bt_coex_active)
 747		bt_cmd.flags = BT_COEX_DISABLE;
 748	else
 749		bt_cmd.flags = BT_COEX_ENABLE;
 750
 751	priv->bt_enable_flag = bt_cmd.flags;
 752	IWL_DEBUG_INFO(priv, "BT coex %s\n",
 753		(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 754
 755	if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 756			     0, sizeof(struct iwl_bt_cmd), &bt_cmd))
 757		IWL_ERR(priv, "failed to send BT Coex Config\n");
 758}
 759
 760/*
 761 * iwl_alive_start - called after REPLY_ALIVE notification received
 762 *                   from protocol/runtime uCode (initialization uCode's
 763 *                   Alive gets handled by iwl_init_alive_start()).
 764 */
 765int iwl_alive_start(struct iwl_priv *priv)
 766{
 767	int ret = 0;
 768	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 769
 770	IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 771
 772	/* After the ALIVE response, we can send host commands to the uCode */
 773	set_bit(STATUS_ALIVE, &priv->status);
 774
 775	if (iwl_is_rfkill(priv))
 776		return -ERFKILL;
 777
 778	if (priv->event_log.ucode_trace) {
 779		/* start collecting data now */
 780		mod_timer(&priv->ucode_trace, jiffies);
 781	}
 782
 783	/* download priority table before any calibration request */
 784	if (priv->lib->bt_params &&
 785	    priv->lib->bt_params->advanced_bt_coexist) {
 786		/* Configure Bluetooth device coexistence support */
 787		if (priv->lib->bt_params->bt_sco_disable)
 788			priv->bt_enable_pspoll = false;
 789		else
 790			priv->bt_enable_pspoll = true;
 791
 792		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 793		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 794		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 795		iwlagn_send_advance_bt_config(priv);
 796		priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 797		priv->cur_rssi_ctx = NULL;
 798
 799		iwl_send_prio_tbl(priv);
 800
 801		/* FIXME: w/a to force change uCode BT state machine */
 802		ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 803					 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 804		if (ret)
 805			return ret;
 806		ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
 807					 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 808		if (ret)
 809			return ret;
 810	} else if (priv->lib->bt_params) {
 811		/*
 812		 * default is 2-wire BT coexexistence support
 813		 */
 814		iwl_send_bt_config(priv);
 815	}
 816
 817	/*
 818	 * Perform runtime calibrations, including DC calibration.
 819	 */
 820	iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 821
 822	ieee80211_wake_queues(priv->hw);
 823
 824	/* Configure Tx antenna selection based on H/W config */
 825	iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
 826
 827	if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 828		struct iwl_rxon_cmd *active = (void *)(uintptr_t)&ctx->active;
 829
 830		/* apply any changes in staging */
 831		ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 832		active->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 833	} else {
 834		struct iwl_rxon_context *tmp;
 835		/* Initialize our rx_config data */
 836		for_each_context(priv, tmp)
 837			iwl_connection_init_rx_config(priv, tmp);
 838
 839		iwlagn_set_rxon_chain(priv, ctx);
 840	}
 841
 842	if (!priv->wowlan) {
 843		/* WoWLAN ucode will not reply in the same way, skip it */
 844		iwl_reset_run_time_calib(priv);
 845	}
 846
 847	set_bit(STATUS_READY, &priv->status);
 848
 849	/* Configure the adapter for unassociated operation */
 850	ret = iwlagn_commit_rxon(priv, ctx);
 851	if (ret)
 852		return ret;
 853
 854	/* At this point, the NIC is initialized and operational */
 855	iwl_rf_kill_ct_config(priv);
 856
 857	IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 858
 859	return iwl_power_update_mode(priv, true);
 860}
 861
 862/**
 863 * iwl_clear_driver_stations - clear knowledge of all stations from driver
 864 * @priv: iwl priv struct
 865 *
 866 * This is called during iwl_down() to make sure that in the case
 867 * we're coming there from a hardware restart mac80211 will be
 868 * able to reconfigure stations -- if we're getting there in the
 869 * normal down flow then the stations will already be cleared.
 870 */
 871static void iwl_clear_driver_stations(struct iwl_priv *priv)
 872{
 873	struct iwl_rxon_context *ctx;
 874
 875	spin_lock_bh(&priv->sta_lock);
 876	memset(priv->stations, 0, sizeof(priv->stations));
 877	priv->num_stations = 0;
 878
 879	priv->ucode_key_table = 0;
 880
 881	for_each_context(priv, ctx) {
 882		/*
 883		 * Remove all key information that is not stored as part
 884		 * of station information since mac80211 may not have had
 885		 * a chance to remove all the keys. When device is
 886		 * reconfigured by mac80211 after an error all keys will
 887		 * be reconfigured.
 888		 */
 889		memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 890		ctx->key_mapping_keys = 0;
 891	}
 892
 893	spin_unlock_bh(&priv->sta_lock);
 894}
 895
 896void iwl_down(struct iwl_priv *priv)
 897{
 898	int exit_pending;
 899
 900	IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 901
 902	lockdep_assert_held(&priv->mutex);
 903
 904	iwl_scan_cancel_timeout(priv, 200);
 905
 906	exit_pending =
 907		test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
 908
 909	iwl_clear_ucode_stations(priv, NULL);
 910	iwl_dealloc_bcast_stations(priv);
 911	iwl_clear_driver_stations(priv);
 912
 913	/* reset BT coex data */
 914	priv->bt_status = 0;
 915	priv->cur_rssi_ctx = NULL;
 916	priv->bt_is_sco = 0;
 917	if (priv->lib->bt_params)
 918		priv->bt_traffic_load =
 919			 priv->lib->bt_params->bt_init_traffic_load;
 920	else
 921		priv->bt_traffic_load = 0;
 922	priv->bt_full_concurrent = false;
 923	priv->bt_ci_compliance = 0;
 924
 925	/* Wipe out the EXIT_PENDING status bit if we are not actually
 926	 * exiting the module */
 927	if (!exit_pending)
 928		clear_bit(STATUS_EXIT_PENDING, &priv->status);
 929
 930	if (priv->mac80211_registered)
 931		ieee80211_stop_queues(priv->hw);
 932
 933	priv->ucode_loaded = false;
 934	iwl_trans_stop_device(priv->trans);
 935
 936	/* Set num_aux_in_flight must be done after the transport is stopped */
 937	atomic_set(&priv->num_aux_in_flight, 0);
 938
 939	/* Clear out all status bits but a few that are stable across reset */
 940	priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 941				STATUS_RF_KILL_HW |
 942			test_bit(STATUS_FW_ERROR, &priv->status) <<
 943				STATUS_FW_ERROR |
 944			test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 945				STATUS_EXIT_PENDING;
 946
 947	dev_kfree_skb(priv->beacon_skb);
 948	priv->beacon_skb = NULL;
 949}
 950
 951/*****************************************************************************
 952 *
 953 * Workqueue callbacks
 954 *
 955 *****************************************************************************/
 956
 957static void iwl_bg_run_time_calib_work(struct work_struct *work)
 958{
 959	struct iwl_priv *priv = container_of(work, struct iwl_priv,
 960			run_time_calib_work);
 961
 962	mutex_lock(&priv->mutex);
 963
 964	if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 965	    test_bit(STATUS_SCANNING, &priv->status)) {
 966		mutex_unlock(&priv->mutex);
 967		return;
 968	}
 969
 970	if (priv->start_calib) {
 971		iwl_chain_noise_calibration(priv);
 972		iwl_sensitivity_calibration(priv);
 973	}
 974
 975	mutex_unlock(&priv->mutex);
 976}
 977
 978void iwlagn_prepare_restart(struct iwl_priv *priv)
 979{
 980	bool bt_full_concurrent;
 981	u8 bt_ci_compliance;
 982	u8 bt_load;
 983	u8 bt_status;
 984	bool bt_is_sco;
 985	int i;
 986
 987	lockdep_assert_held(&priv->mutex);
 988
 989	priv->is_open = 0;
 990
 991	/*
 992	 * __iwl_down() will clear the BT status variables,
 993	 * which is correct, but when we restart we really
 994	 * want to keep them so restore them afterwards.
 995	 *
 996	 * The restart process will later pick them up and
 997	 * re-configure the hw when we reconfigure the BT
 998	 * command.
 999	 */
1000	bt_full_concurrent = priv->bt_full_concurrent;
1001	bt_ci_compliance = priv->bt_ci_compliance;
1002	bt_load = priv->bt_traffic_load;
1003	bt_status = priv->bt_status;
1004	bt_is_sco = priv->bt_is_sco;
1005
1006	iwl_down(priv);
1007
1008	priv->bt_full_concurrent = bt_full_concurrent;
1009	priv->bt_ci_compliance = bt_ci_compliance;
1010	priv->bt_traffic_load = bt_load;
1011	priv->bt_status = bt_status;
1012	priv->bt_is_sco = bt_is_sco;
1013
1014	/* reset aggregation queues */
1015	for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1016		priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1017	/* and stop counts */
1018	for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1019		atomic_set(&priv->queue_stop_count[i], 0);
1020
1021	memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1022}
1023
1024static void iwl_bg_restart(struct work_struct *data)
1025{
1026	struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1027
1028	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1029		return;
1030
1031	if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1032		mutex_lock(&priv->mutex);
1033		iwlagn_prepare_restart(priv);
1034		mutex_unlock(&priv->mutex);
1035		iwl_cancel_deferred_work(priv);
1036		if (priv->mac80211_registered)
1037			ieee80211_restart_hw(priv->hw);
1038		else
1039			IWL_ERR(priv,
1040				"Cannot request restart before registering with mac80211\n");
1041	} else {
1042		WARN_ON(1);
1043	}
1044}
1045
1046/*****************************************************************************
1047 *
1048 * driver setup and teardown
1049 *
1050 *****************************************************************************/
1051
1052static int iwl_setup_deferred_work(struct iwl_priv *priv)
1053{
1054	priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0);
1055	if (!priv->workqueue)
1056		return -ENOMEM;
1057
1058	INIT_WORK(&priv->restart, iwl_bg_restart);
1059	INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1060	INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1061	INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1062	INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1063	INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1064
1065	iwl_setup_scan_deferred_work(priv);
1066
1067	if (priv->lib->bt_params)
1068		iwlagn_bt_setup_deferred_work(priv);
1069
1070	timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0);
1071
1072	timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0);
1073
1074	return 0;
1075}
1076
1077void iwl_cancel_deferred_work(struct iwl_priv *priv)
1078{
1079	if (priv->lib->bt_params)
1080		iwlagn_bt_cancel_deferred_work(priv);
1081
1082	cancel_work_sync(&priv->run_time_calib_work);
1083	cancel_work_sync(&priv->beacon_update);
1084
1085	iwl_cancel_scan_deferred_work(priv);
1086
1087	cancel_work_sync(&priv->bt_full_concurrency);
1088	cancel_work_sync(&priv->bt_runtime_config);
1089
1090	timer_delete_sync(&priv->statistics_periodic);
1091	timer_delete_sync(&priv->ucode_trace);
1092}
1093
1094static int iwl_init_drv(struct iwl_priv *priv)
1095{
1096	spin_lock_init(&priv->sta_lock);
1097
1098	mutex_init(&priv->mutex);
1099
1100	INIT_LIST_HEAD(&priv->calib_results);
1101
1102	priv->band = NL80211_BAND_2GHZ;
1103
1104	priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1105
1106	priv->iw_mode = NL80211_IFTYPE_STATION;
1107	priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1108	priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1109	priv->agg_tids_count = 0;
1110
1111	priv->rx_statistics_jiffies = jiffies;
1112
1113	/* Choose which receivers/antennas to use */
1114	iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1115
1116	iwl_init_scan_params(priv);
1117
1118	/* init bt coex */
1119	if (priv->lib->bt_params &&
1120	    priv->lib->bt_params->advanced_bt_coexist) {
1121		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1122		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1123		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1124		priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1125		priv->bt_duration = BT_DURATION_LIMIT_DEF;
1126		priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1127	}
1128
1129	return 0;
1130}
1131
1132static void iwl_uninit_drv(struct iwl_priv *priv)
1133{
1134	kfree(priv->scan_cmd);
1135	kfree(priv->beacon_cmd);
1136	kfree(rcu_dereference_raw(priv->noa_data));
1137	iwl_calib_free_results(priv);
1138#ifdef CONFIG_IWLWIFI_DEBUGFS
1139	kfree(priv->wowlan_sram);
1140#endif
1141}
1142
1143static void iwl_set_hw_params(struct iwl_priv *priv)
1144{
1145	/* there are no devices with HT but without HT40 on all bands */
1146	if (priv->cfg->ht_params.ht40_bands)
1147		priv->hw_params.use_rts_for_aggregation =
1148			priv->cfg->ht_params.use_rts_for_aggregation;
1149
1150	/* Device-specific setup */
1151	priv->lib->set_hw_params(priv);
1152}
1153
1154
1155
1156/* show what optional capabilities we have */
1157static void iwl_option_config(struct iwl_priv *priv)
1158{
1159#ifdef CONFIG_IWLWIFI_DEBUG
1160	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1161#else
1162	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1163#endif
1164
1165#ifdef CONFIG_IWLWIFI_DEBUGFS
1166	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1167#else
1168	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1169#endif
1170
1171#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1172	IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1173#else
1174	IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1175#endif
1176}
1177
1178static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1179{
1180	struct iwl_nvm_data *data = priv->nvm_data;
1181
1182	/* all HT devices also have HT40 on at least one band */
1183	if (data->sku_cap_11n_enable &&
1184	    !priv->cfg->ht_params.ht40_bands) {
1185		IWL_ERR(priv, "Invalid 11n configuration\n");
1186		return -EINVAL;
1187	}
1188
1189	if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable &&
1190	    !data->sku_cap_band_52ghz_enable) {
1191		IWL_ERR(priv, "Invalid device sku\n");
1192		return -EINVAL;
1193	}
1194
1195	IWL_DEBUG_INFO(priv,
1196		       "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n",
1197		       data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled",
1198		       data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled",
1199		       data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1200
1201	priv->hw_params.tx_chains_num =
1202		num_of_ant(data->valid_tx_ant);
1203	if (priv->cfg->rx_with_siso_diversity)
1204		priv->hw_params.rx_chains_num = 1;
1205	else
1206		priv->hw_params.rx_chains_num =
1207			num_of_ant(data->valid_rx_ant);
1208
1209	IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1210		       data->valid_tx_ant,
1211		       data->valid_rx_ant);
1212
1213	return 0;
1214}
1215
1216static int iwl_nvm_check_version(struct iwl_nvm_data *data,
1217				 struct iwl_trans *trans)
1218{
1219	if (data->nvm_version >= trans->cfg->nvm_ver ||
1220	    data->calib_version >= trans->cfg->nvm_calib_ver) {
1221		IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",
1222			       data->nvm_version, data->calib_version);
1223		return 0;
1224	}
1225
1226	IWL_ERR(trans,
1227		"Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
1228		data->nvm_version, trans->cfg->nvm_ver,
1229		data->calib_version,  trans->cfg->nvm_calib_ver);
1230	return -EINVAL;
1231}
1232
1233static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1234						 const struct iwl_rf_cfg *cfg,
1235						 const struct iwl_fw *fw,
1236						 struct dentry *dbgfs_dir)
1237{
1238	struct iwl_priv *priv;
1239	struct ieee80211_hw *hw;
1240	struct iwl_op_mode *op_mode;
1241	u16 num_mac;
1242	u32 ucode_flags;
1243	static const u8 no_reclaim_cmds[] = {
1244		REPLY_RX_PHY_CMD,
1245		REPLY_RX_MPDU_CMD,
1246		REPLY_COMPRESSED_BA,
1247		STATISTICS_NOTIFICATION,
1248		REPLY_TX,
1249	};
1250	int i, err;
1251
1252	/************************
1253	 * 1. Allocating HW data
1254	 ************************/
1255	hw = iwl_alloc_all();
1256	if (!hw) {
1257		pr_err("%s: Cannot allocate network device\n",
1258		       trans->info.name);
1259		err = -ENOMEM;
1260		goto out;
1261	}
1262
1263	op_mode = hw->priv;
1264	op_mode->ops = &iwl_dvm_ops;
1265	priv = IWL_OP_MODE_GET_DVM(op_mode);
1266	priv->trans = trans;
1267	priv->dev = trans->dev;
1268	priv->cfg = cfg;
1269	priv->fw = fw;
1270
1271	switch (priv->trans->mac_cfg->device_family) {
1272	case IWL_DEVICE_FAMILY_1000:
1273	case IWL_DEVICE_FAMILY_100:
1274		priv->lib = &iwl_dvm_1000_cfg;
1275		break;
1276	case IWL_DEVICE_FAMILY_2000:
1277		priv->lib = &iwl_dvm_2000_cfg;
1278		break;
1279	case IWL_DEVICE_FAMILY_105:
1280		priv->lib = &iwl_dvm_105_cfg;
1281		break;
1282	case IWL_DEVICE_FAMILY_2030:
1283	case IWL_DEVICE_FAMILY_135:
1284		priv->lib = &iwl_dvm_2030_cfg;
1285		break;
1286	case IWL_DEVICE_FAMILY_5000:
1287		priv->lib = &iwl_dvm_5000_cfg;
1288		break;
1289	case IWL_DEVICE_FAMILY_5150:
1290		priv->lib = &iwl_dvm_5150_cfg;
1291		break;
1292	case IWL_DEVICE_FAMILY_6000:
1293	case IWL_DEVICE_FAMILY_6000i:
1294		priv->lib = &iwl_dvm_6000_cfg;
1295		break;
1296	case IWL_DEVICE_FAMILY_6005:
1297		priv->lib = &iwl_dvm_6005_cfg;
1298		break;
1299	case IWL_DEVICE_FAMILY_6050:
1300	case IWL_DEVICE_FAMILY_6150:
1301		priv->lib = &iwl_dvm_6050_cfg;
1302		break;
1303	case IWL_DEVICE_FAMILY_6030:
1304		priv->lib = &iwl_dvm_6030_cfg;
1305		break;
1306	default:
1307		break;
1308	}
1309
1310	if (WARN_ON(!priv->lib)) {
1311		err = -ENODEV;
1312		goto out_free_hw;
1313	}
1314
1315	/*
1316	 * Populate the state variables that the transport layer needs
1317	 * to know about.
1318	 */
1319	BUILD_BUG_ON(sizeof(no_reclaim_cmds) >
1320		     sizeof(trans->conf.no_reclaim_cmds));
1321	memcpy(trans->conf.no_reclaim_cmds, no_reclaim_cmds,
1322	       sizeof(no_reclaim_cmds));
1323	trans->conf.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1324
1325	switch (iwlwifi_mod_params.amsdu_size) {
1326	case IWL_AMSDU_DEF:
1327	case IWL_AMSDU_4K:
1328		trans->conf.rx_buf_size = IWL_AMSDU_4K;
1329		break;
1330	case IWL_AMSDU_8K:
1331		trans->conf.rx_buf_size = IWL_AMSDU_8K;
1332		break;
1333	case IWL_AMSDU_12K:
1334	default:
1335		trans->conf.rx_buf_size = IWL_AMSDU_4K;
1336		pr_err("Unsupported amsdu_size: %d\n",
1337		       iwlwifi_mod_params.amsdu_size);
1338	}
1339
1340	trans->conf.command_groups = iwl_dvm_groups;
1341	trans->conf.command_groups_size = ARRAY_SIZE(iwl_dvm_groups);
1342
1343	trans->conf.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1344	trans->conf.cb_data_offs = offsetof(struct ieee80211_tx_info,
1345					    driver_data[2]);
1346
1347	WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1348		priv->trans->mac_cfg->base->num_of_queues);
1349
1350	ucode_flags = fw->ucode_capa.flags;
1351
1352	if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1353		priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1354		trans->conf.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1355	} else {
1356		priv->sta_key_max_num = STA_KEY_MAX_NUM;
1357		trans->conf.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1358	}
1359
1360	trans->conf.rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1361	trans->conf.rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1362
1363	iwl_trans_op_mode_enter(priv->trans, op_mode);
1364
1365	/* At this point both hw and priv are allocated. */
1366
1367	SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1368
1369	iwl_option_config(priv);
1370
1371	IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1372
1373	/* bt channel inhibition enabled*/
1374	priv->bt_ch_announce = true;
1375	IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1376		       (priv->bt_ch_announce) ? "On" : "Off");
1377
1378	/* these spin locks will be used in apm_ops.init and EEPROM access
1379	 * we should init now
1380	 */
1381	spin_lock_init(&priv->statistics.lock);
1382
1383	/***********************
1384	 * 2. Read REV register
1385	 ***********************/
1386	IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1387		priv->trans->info.name, priv->trans->info.hw_rev);
1388
1389	err = iwl_trans_start_hw(priv->trans);
1390	if (err)
1391		goto out_leave_trans;
1392
1393	/* Read the EEPROM */
1394	err = iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1395			      &priv->eeprom_blob_size);
1396	if (err) {
1397		IWL_ERR(priv, "Unable to init EEPROM\n");
1398		goto out_leave_trans;
1399	}
1400
1401	/* Reset chip to save power until we load uCode during "up". */
1402	iwl_trans_stop_device(priv->trans);
1403
1404	priv->nvm_data = iwl_parse_eeprom_data(priv->trans, priv->cfg,
1405					       priv->eeprom_blob,
1406					       priv->eeprom_blob_size);
1407	if (!priv->nvm_data) {
1408		err = -ENOMEM;
1409		goto out_free_eeprom_blob;
1410	}
1411
1412	err = iwl_nvm_check_version(priv->nvm_data, priv->trans);
1413	if (err)
1414		goto out_free_eeprom;
1415
1416	err = iwl_eeprom_init_hw_params(priv);
1417	if (err)
1418		goto out_free_eeprom;
1419
1420	/* extract MAC Address */
1421	memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1422	IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1423	priv->hw->wiphy->addresses = priv->addresses;
1424	priv->hw->wiphy->n_addresses = 1;
1425	num_mac = priv->nvm_data->n_hw_addrs;
1426	if (num_mac > 1) {
1427		memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1428		       ETH_ALEN);
1429		priv->addresses[1].addr[5]++;
1430		priv->hw->wiphy->n_addresses++;
1431	}
1432
1433	/************************
1434	 * 4. Setup HW constants
1435	 ************************/
1436	iwl_set_hw_params(priv);
1437
1438	if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1439		IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n");
1440		ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1441		/*
1442		 * if not PAN, then don't support P2P -- might be a uCode
1443		 * packaging bug or due to the eeprom check above
1444		 */
1445		priv->sta_key_max_num = STA_KEY_MAX_NUM;
1446		trans->conf.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1447	}
1448
1449	/*******************
1450	 * 5. Setup priv
1451	 *******************/
1452	for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1453		priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1454		if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1455		    i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1456		    i != IWL_IPAN_CMD_QUEUE_NUM)
1457			priv->queue_to_mac80211[i] = i;
1458		atomic_set(&priv->queue_stop_count[i], 0);
1459	}
1460
1461	err = iwl_init_drv(priv);
1462	if (err)
1463		goto out_free_eeprom;
1464
1465	/* At this point both hw and priv are initialized. */
1466
1467	/********************
1468	 * 6. Setup services
1469	 ********************/
1470	err = iwl_setup_deferred_work(priv);
1471	if (err)
1472		goto out_uninit_drv;
1473
1474	iwl_setup_rx_handlers(priv);
1475
1476	iwl_power_initialize(priv);
1477	iwl_tt_initialize(priv);
1478
1479	snprintf(priv->hw->wiphy->fw_version,
1480		 sizeof(priv->hw->wiphy->fw_version),
1481		 "%.31s", fw->fw_version);
1482
1483	priv->new_scan_threshold_behaviour =
1484		!!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1485
1486	priv->phy_calib_chain_noise_reset_cmd =
1487		fw->ucode_capa.standard_phy_calibration_size;
1488	priv->phy_calib_chain_noise_gain_cmd =
1489		fw->ucode_capa.standard_phy_calibration_size + 1;
1490
1491	/* initialize all valid contexts */
1492	iwl_init_context(priv, ucode_flags);
1493
1494	/**************************************************
1495	 * This is still part of probe() in a sense...
1496	 *
1497	 * 7. Setup and register with mac80211 and debugfs
1498	 **************************************************/
1499	err = iwlagn_mac_setup_register(priv, &fw->ucode_capa);
1500	if (err)
1501		goto out_destroy_workqueue;
1502
1503	iwl_dbgfs_register(priv, dbgfs_dir);
1504
1505	return op_mode;
1506
1507out_destroy_workqueue:
1508	iwl_tt_exit(priv);
1509	iwl_cancel_deferred_work(priv);
1510	destroy_workqueue(priv->workqueue);
1511	priv->workqueue = NULL;
1512out_uninit_drv:
1513	iwl_uninit_drv(priv);
1514out_free_eeprom_blob:
1515	kfree(priv->eeprom_blob);
1516out_free_eeprom:
1517	kfree(priv->nvm_data);
1518out_leave_trans:
1519	iwl_trans_op_mode_leave(priv->trans);
1520out_free_hw:
1521	ieee80211_free_hw(priv->hw);
1522out:
1523	return ERR_PTR(err);
1524}
1525
1526static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1527{
1528	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1529
1530	IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1531
1532	iwlagn_mac_unregister(priv);
1533
1534	iwl_tt_exit(priv);
1535
1536	kfree(priv->eeprom_blob);
1537	kfree(priv->nvm_data);
1538
1539	/*netif_stop_queue(dev); */
1540
1541	/* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1542	 * priv->workqueue... so we can't take down the workqueue
1543	 * until now... */
1544	destroy_workqueue(priv->workqueue);
1545	priv->workqueue = NULL;
1546
1547	iwl_uninit_drv(priv);
1548
1549	dev_kfree_skb(priv->beacon_skb);
1550
1551	iwl_trans_op_mode_leave(priv->trans);
1552	ieee80211_free_hw(priv->hw);
1553}
1554
1555static const char * const desc_lookup_text[] = {
1556	"OK",
1557	"FAIL",
1558	"BAD_PARAM",
1559	"BAD_CHECKSUM",
1560	"NMI_INTERRUPT_WDG",
1561	"SYSASSERT",
1562	"FATAL_ERROR",
1563	"BAD_COMMAND",
1564	"HW_ERROR_TUNE_LOCK",
1565	"HW_ERROR_TEMPERATURE",
1566	"ILLEGAL_CHAN_FREQ",
1567	"VCC_NOT_STABLE",
1568	"FH_ERROR",
1569	"NMI_INTERRUPT_HOST",
1570	"NMI_INTERRUPT_ACTION_PT",
1571	"NMI_INTERRUPT_UNKNOWN",
1572	"UCODE_VERSION_MISMATCH",
1573	"HW_ERROR_ABS_LOCK",
1574	"HW_ERROR_CAL_LOCK_FAIL",
1575	"NMI_INTERRUPT_INST_ACTION_PT",
1576	"NMI_INTERRUPT_DATA_ACTION_PT",
1577	"NMI_TRM_HW_ER",
1578	"NMI_INTERRUPT_TRM",
1579	"NMI_INTERRUPT_BREAK_POINT",
1580	"DEBUG_0",
1581	"DEBUG_1",
1582	"DEBUG_2",
1583	"DEBUG_3",
1584};
1585
1586static struct { char *name; u8 num; } advanced_lookup[] = {
1587	{ "NMI_INTERRUPT_WDG", 0x34 },
1588	{ "SYSASSERT", 0x35 },
1589	{ "UCODE_VERSION_MISMATCH", 0x37 },
1590	{ "BAD_COMMAND", 0x38 },
1591	{ "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1592	{ "FATAL_ERROR", 0x3D },
1593	{ "NMI_TRM_HW_ERR", 0x46 },
1594	{ "NMI_INTERRUPT_TRM", 0x4C },
1595	{ "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1596	{ "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1597	{ "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1598	{ "NMI_INTERRUPT_HOST", 0x66 },
1599	{ "NMI_INTERRUPT_ACTION_PT", 0x7C },
1600	{ "NMI_INTERRUPT_UNKNOWN", 0x84 },
1601	{ "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1602	{ "ADVANCED_SYSASSERT", 0 },
1603};
1604
1605static const char *desc_lookup(u32 num)
1606{
1607	int i;
1608	int max = ARRAY_SIZE(desc_lookup_text);
1609
1610	if (num < max)
1611		return desc_lookup_text[num];
1612
1613	max = ARRAY_SIZE(advanced_lookup) - 1;
1614	for (i = 0; i < max; i++) {
1615		if (advanced_lookup[i].num == num)
1616			break;
1617	}
1618	return advanced_lookup[i].name;
1619}
1620
1621#define ERROR_START_OFFSET  (1 * sizeof(u32))
1622#define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1623
1624static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1625{
1626	struct iwl_trans *trans = priv->trans;
1627	u32 base;
1628	struct iwl_error_event_table table;
1629
1630	base = priv->device_pointers.error_event_table;
1631	if (priv->cur_ucode == IWL_UCODE_INIT) {
1632		if (!base)
1633			base = priv->fw->init_errlog_ptr;
1634	} else {
1635		if (!base)
1636			base = priv->fw->inst_errlog_ptr;
1637	}
1638
1639	if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1640		IWL_ERR(priv,
1641			"Not valid error log pointer 0x%08X for %s uCode\n",
1642			base,
1643			(priv->cur_ucode == IWL_UCODE_INIT)
1644					? "Init" : "RT");
1645		return;
1646	}
1647
1648	/*TODO: Update dbgfs with ISR error stats obtained below */
1649	iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1650
1651	if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1652		IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1653		IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1654			priv->status, table.valid);
1655	}
1656
1657	IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1658		desc_lookup(table.error_id));
1659	IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1660	IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1661	IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1662	IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1663	IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1664	IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1665	IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1666	IWL_ERR(priv, "0x%08X | line\n", table.line);
1667	IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1668	IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1669	IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1670	IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1671	IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1672	IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1673	IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1674	IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1675	IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1676	IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1677	IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1678	IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1679	IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1680	IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1681	IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1682	IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1683	IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1684	IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1685	IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1686	IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1687	IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1688	IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1689	IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1690	IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1691}
1692
1693#define EVENT_START_OFFSET  (4 * sizeof(u32))
1694
1695/*
1696 * iwl_print_event_log - Dump error event log to syslog
1697 */
1698static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1699			       u32 num_events, u32 mode,
1700			       int pos, char **buf, size_t bufsz)
1701{
1702	u32 i;
1703	u32 base;       /* SRAM byte address of event log header */
1704	u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1705	u32 ptr;        /* SRAM byte address of log data */
1706	u32 ev, time, data; /* event log data */
1707
1708	struct iwl_trans *trans = priv->trans;
1709
1710	if (num_events == 0)
1711		return pos;
1712
1713	base = priv->device_pointers.log_event_table;
1714	if (priv->cur_ucode == IWL_UCODE_INIT) {
1715		if (!base)
1716			base = priv->fw->init_evtlog_ptr;
1717	} else {
1718		if (!base)
1719			base = priv->fw->inst_evtlog_ptr;
1720	}
1721
1722	if (mode == 0)
1723		event_size = 2 * sizeof(u32);
1724	else
1725		event_size = 3 * sizeof(u32);
1726
1727	ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1728
1729	/* Make sure device is powered up for SRAM reads */
1730	if (!iwl_trans_grab_nic_access(trans))
1731		return pos;
1732
1733	/* Set starting address; reads will auto-increment */
1734	iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1735
1736	/* "time" is actually "data" for mode 0 (no timestamp).
1737	* place event id # at far right for easier visual parsing. */
1738	for (i = 0; i < num_events; i++) {
1739		ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1740		time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1741		if (mode == 0) {
1742			/* data, ev */
1743			if (bufsz) {
1744				pos += scnprintf(*buf + pos, bufsz - pos,
1745						"EVT_LOG:0x%08x:%04u\n",
1746						time, ev);
1747			} else {
1748				trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1749					time, ev);
1750				IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1751					time, ev);
1752			}
1753		} else {
1754			data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1755			if (bufsz) {
1756				pos += scnprintf(*buf + pos, bufsz - pos,
1757						"EVT_LOGT:%010u:0x%08x:%04u\n",
1758						 time, data, ev);
1759			} else {
1760				IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1761					time, data, ev);
1762				trace_iwlwifi_dev_ucode_event(trans->dev, time,
1763					data, ev);
1764			}
1765		}
1766	}
1767
1768	/* Allow device to power down */
1769	iwl_trans_release_nic_access(trans);
1770	return pos;
1771}
1772
1773/*
1774 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1775 */
1776static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1777				    u32 num_wraps, u32 next_entry,
1778				    u32 size, u32 mode,
1779				    int pos, char **buf, size_t bufsz)
1780{
1781	/*
1782	 * display the newest DEFAULT_LOG_ENTRIES entries
1783	 * i.e the entries just before the next ont that uCode would fill.
1784	 */
1785	if (num_wraps) {
1786		if (next_entry < size) {
1787			pos = iwl_print_event_log(priv,
1788						capacity - (size - next_entry),
1789						size - next_entry, mode,
1790						pos, buf, bufsz);
1791			pos = iwl_print_event_log(priv, 0,
1792						  next_entry, mode,
1793						  pos, buf, bufsz);
1794		} else
1795			pos = iwl_print_event_log(priv, next_entry - size,
1796						  size, mode, pos, buf, bufsz);
1797	} else {
1798		if (next_entry < size) {
1799			pos = iwl_print_event_log(priv, 0, next_entry,
1800						  mode, pos, buf, bufsz);
1801		} else {
1802			pos = iwl_print_event_log(priv, next_entry - size,
1803						  size, mode, pos, buf, bufsz);
1804		}
1805	}
1806	return pos;
1807}
1808
1809#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1810
1811int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1812			    char **buf)
1813{
1814	u32 base;       /* SRAM byte address of event log header */
1815	u32 capacity;   /* event log capacity in # entries */
1816	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1817	u32 num_wraps;  /* # times uCode wrapped to top of log */
1818	u32 next_entry; /* index of next entry to be written by uCode */
1819	u32 size;       /* # entries that we'll print */
1820	u32 logsize;
1821	int pos = 0;
1822	size_t bufsz = 0;
1823	struct iwl_trans *trans = priv->trans;
1824
1825	base = priv->device_pointers.log_event_table;
1826	if (priv->cur_ucode == IWL_UCODE_INIT) {
1827		logsize = priv->fw->init_evtlog_size;
1828		if (!base)
1829			base = priv->fw->init_evtlog_ptr;
1830	} else {
1831		logsize = priv->fw->inst_evtlog_size;
1832		if (!base)
1833			base = priv->fw->inst_evtlog_ptr;
1834	}
1835
1836	if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1837		IWL_ERR(priv,
1838			"Invalid event log pointer 0x%08X for %s uCode\n",
1839			base,
1840			(priv->cur_ucode == IWL_UCODE_INIT)
1841					? "Init" : "RT");
1842		return -EINVAL;
1843	}
1844
1845	/* event log header */
1846	capacity = iwl_trans_read_mem32(trans, base);
1847	mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1848	num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1849	next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1850
1851	if (capacity > logsize) {
1852		IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1853			"entries\n", capacity, logsize);
1854		capacity = logsize;
1855	}
1856
1857	if (next_entry > logsize) {
1858		IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1859			next_entry, logsize);
1860		next_entry = logsize;
1861	}
1862
1863	size = num_wraps ? capacity : next_entry;
1864
1865	/* bail out if nothing in log */
1866	if (size == 0) {
1867		IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1868		return pos;
1869	}
1870
1871	if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log)
1872		size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1873			? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1874	IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1875		size);
1876
1877#ifdef CONFIG_IWLWIFI_DEBUG
1878	if (buf) {
1879		if (full_log)
1880			bufsz = capacity * 48;
1881		else
1882			bufsz = size * 48;
1883		*buf = kmalloc(bufsz, GFP_KERNEL);
1884		if (!*buf)
1885			return -ENOMEM;
1886	}
1887	if (iwl_have_debug_level(IWL_DL_FW) || full_log) {
1888		/*
1889		 * if uCode has wrapped back to top of log,
1890		 * start at the oldest entry,
1891		 * i.e the next one that uCode would fill.
1892		 */
1893		if (num_wraps)
1894			pos = iwl_print_event_log(priv, next_entry,
1895						capacity - next_entry, mode,
1896						pos, buf, bufsz);
1897		/* (then/else) start at top of log */
1898		pos = iwl_print_event_log(priv, 0,
1899					  next_entry, mode, pos, buf, bufsz);
1900	} else
1901		pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1902						next_entry, size, mode,
1903						pos, buf, bufsz);
1904#else
1905	pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1906					next_entry, size, mode,
1907					pos, buf, bufsz);
1908#endif
1909	return pos;
1910}
1911
1912static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1913{
1914	unsigned int reload_msec;
1915	unsigned long reload_jiffies;
1916
1917	/* uCode is no longer loaded. */
1918	priv->ucode_loaded = false;
1919
1920	/* Keep the restart process from trying to send host
1921	 * commands by clearing the ready bit */
1922	clear_bit(STATUS_READY, &priv->status);
1923
1924	if (!ondemand) {
1925		/*
1926		 * If firmware keep reloading, then it indicate something
1927		 * serious wrong and firmware having problem to recover
1928		 * from it. Instead of keep trying which will fill the syslog
1929		 * and hang the system, let's just stop it
1930		 */
1931		reload_jiffies = jiffies;
1932		reload_msec = jiffies_to_msecs((long) reload_jiffies -
1933					(long) priv->reload_jiffies);
1934		priv->reload_jiffies = reload_jiffies;
1935		if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1936			priv->reload_count++;
1937			if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1938				IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1939				return;
1940			}
1941		} else
1942			priv->reload_count = 0;
1943	}
1944
1945	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1946		if (iwlwifi_mod_params.fw_restart) {
1947			IWL_DEBUG_FW(priv,
1948				     "Restarting adapter due to uCode error.\n");
1949			queue_work(priv->workqueue, &priv->restart);
1950		} else
1951			IWL_DEBUG_FW(priv,
1952				     "Detected FW error, but not restarting\n");
1953	}
1954}
1955
1956static void iwl_nic_error(struct iwl_op_mode *op_mode,
1957			  enum iwl_fw_error_type type)
1958{
1959	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1960
1961	/* Set the FW error flag -- cleared on iwl_down */
1962	set_bit(STATUS_FW_ERROR, &priv->status);
1963
1964	iwl_abort_notification_waits(&priv->notif_wait);
1965
1966	if (type == IWL_ERR_TYPE_CMD_QUEUE_FULL && iwl_check_for_ct_kill(priv))
1967		return;
1968
1969	IWL_ERR(priv, "Loaded firmware version: %s\n",
1970		priv->fw->fw_version);
1971
1972	if (type == IWL_ERR_TYPE_CMD_QUEUE_FULL) {
1973		IWL_ERR(priv, "Command queue full!\n");
1974	} else {
1975		iwl_dump_nic_error_log(priv);
1976		iwl_dump_nic_event_log(priv, false, NULL);
1977	}
1978
1979	if (iwl_have_debug_level(IWL_DL_FW))
1980		iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1981}
1982
1983static bool iwlagn_sw_reset(struct iwl_op_mode *op_mode,
1984			    enum iwl_fw_error_type type)
1985{
1986	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1987
1988	if (type == IWL_ERR_TYPE_CMD_QUEUE_FULL && iwl_check_for_ct_kill(priv))
1989		return false;
1990
1991	iwlagn_fw_error(priv, false);
1992	return true;
1993}
1994
1995#define EEPROM_RF_CONFIG_TYPE_MAX      0x3
1996
1997static void iwl_nic_config(struct iwl_op_mode *op_mode)
1998{
1999	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2000
2001	/* SKU Control */
2002	iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2003				CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP_DASH,
2004				CSR_HW_REV_STEP_DASH(priv->trans->info.hw_rev));
2005
2006	/* write radio config values to register */
2007	if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
2008		u32 reg_val =
2009			priv->nvm_data->radio_cfg_type <<
2010				CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
2011			priv->nvm_data->radio_cfg_step <<
2012				CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
2013			priv->nvm_data->radio_cfg_dash <<
2014				CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
2015
2016		iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2017					CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
2018					CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
2019					CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
2020					reg_val);
2021
2022		IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2023			 priv->nvm_data->radio_cfg_type,
2024			 priv->nvm_data->radio_cfg_step,
2025			 priv->nvm_data->radio_cfg_dash);
2026	} else {
2027		WARN_ON(1);
2028	}
2029
2030	/* set CSR_HW_CONFIG_REG for uCode use */
2031	iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2032		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2033		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2034
2035	/* W/A : NIC is stuck in a reset state after Early PCIe power off
2036	 * (PCIe power is lost before PERST# is asserted),
2037	 * causing ME FW to lose ownership and not being able to obtain it back.
2038	 */
2039	iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2040			       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2041			       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2042
2043	if (priv->lib->nic_config)
2044		priv->lib->nic_config(priv);
2045}
2046
2047static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2048{
2049	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2050
2051	clear_bit(STATUS_READY, &priv->status);
2052	IWL_ERR(priv, "RF is used by WiMAX\n");
2053}
2054
2055static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2056{
2057	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2058	int mq = priv->queue_to_mac80211[queue];
2059
2060	if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2061		return;
2062
2063	if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2064		IWL_DEBUG_TX_QUEUES(priv,
2065			"queue %d (mac80211 %d) already stopped\n",
2066			queue, mq);
2067		return;
2068	}
2069
2070	set_bit(mq, &priv->transport_queue_stop);
2071	ieee80211_stop_queue(priv->hw, mq);
2072}
2073
2074static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2075{
2076	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2077	int mq = priv->queue_to_mac80211[queue];
2078
2079	if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2080		return;
2081
2082	if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2083		IWL_DEBUG_TX_QUEUES(priv,
2084			"queue %d (mac80211 %d) already awake\n",
2085			queue, mq);
2086		return;
2087	}
2088
2089	clear_bit(mq, &priv->transport_queue_stop);
2090
2091	if (!priv->passive_no_rx)
2092		ieee80211_wake_queue(priv->hw, mq);
2093}
2094
2095void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2096{
2097	int mq;
2098
2099	if (!priv->passive_no_rx)
2100		return;
2101
2102	for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2103		if (!test_bit(mq, &priv->transport_queue_stop)) {
2104			IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq);
2105			ieee80211_wake_queue(priv->hw, mq);
2106		} else {
2107			IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq);
2108		}
2109	}
2110
2111	priv->passive_no_rx = false;
2112}
2113
2114static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2115{
2116	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2117	struct ieee80211_tx_info *info;
2118
2119	info = IEEE80211_SKB_CB(skb);
2120	iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2121	ieee80211_free_txskb(priv->hw, skb);
2122}
2123
2124static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2125{
2126	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2127
2128	if (state)
2129		set_bit(STATUS_RF_KILL_HW, &priv->status);
2130	else
2131		clear_bit(STATUS_RF_KILL_HW, &priv->status);
2132
2133	wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2134
2135	return false;
2136}
2137
2138static const struct iwl_op_mode_ops iwl_dvm_ops = {
2139	.start = iwl_op_mode_dvm_start,
2140	.stop = iwl_op_mode_dvm_stop,
2141	.rx = iwl_rx_dispatch,
2142	.queue_full = iwl_stop_sw_queue,
2143	.queue_not_full = iwl_wake_sw_queue,
2144	.hw_rf_kill = iwl_set_hw_rfkill_state,
2145	.free_skb = iwl_free_skb,
2146	.nic_error = iwl_nic_error,
2147	.sw_reset = iwlagn_sw_reset,
2148	.nic_config = iwl_nic_config,
2149	.wimax_active = iwl_wimax_active,
2150};
2151
2152/*****************************************************************************
2153 *
2154 * driver and module entry point
2155 *
2156 *****************************************************************************/
2157static int __init iwl_init(void)
2158{
2159
2160	int ret;
2161
2162	ret = iwlagn_rate_control_register();
2163	if (ret) {
2164		pr_err("Unable to register rate control algorithm: %d\n", ret);
2165		return ret;
2166	}
2167
2168	ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2169	if (ret) {
2170		pr_err("Unable to register op_mode: %d\n", ret);
2171		iwlagn_rate_control_unregister();
2172	}
2173
2174	return ret;
2175}
2176module_init(iwl_init);
2177
2178static void __exit iwl_exit(void)
2179{
2180	iwl_opmode_deregister("iwldvm");
2181	iwlagn_rate_control_unregister();
2182}
2183module_exit(iwl_exit);