dev.h

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/******************************************************************************
 *
 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 *  Intel Linux Wireless <[email protected]>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/
/*
 * Please use this file (dev.h) for driver implementation definitions.
 * Please use commands.h for uCode API definitions.
 */

#ifndef __iwl_dev_h__
#define __iwl_dev_h__

#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/wait.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/mutex.h>

#include "iwl-fw.h"
#include "iwl-eeprom-parse.h"
#include "iwl-csr.h"
#include "iwl-debug.h"
#include "iwl-agn-hw.h"
#include "iwl-op-mode.h"
#include "iwl-notif-wait.h"
#include "iwl-trans.h"

#include "led.h"
#include "power.h"
#include "rs.h"
#include "tt.h"

#include "iwl-test.h"

/* CT-KILL constants */
#define CT_KILL_THRESHOLD_LEGACY   110 /* in Celsius */
#define CT_KILL_THRESHOLD      114 /* in Celsius */
#define CT_KILL_EXIT_THRESHOLD     95  /* in Celsius */

/* Default noise level to report when noise measurement is not available.
 *   This may be because we're:
 *   1)  Not associated  no beacon statistics being sent to driver)
 *   2)  Scanning (noise measurement does not apply to associated channel)
 * Use default noise value of -127 ... this is below the range of measurable
 *   Rx dBm for all agn devices, so it can indicate "unmeasurable" to user.
 *   Also, -127 works better than 0 when averaging frames with/without
 *   noise info (e.g. averaging might be done in app); measured dBm values are
 *   always negative ... using a negative value as the default keeps all
 *   averages within an s8's (used in some apps) range of negative values. */
#define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)

/*
 * RTS threshold here is total size [2347] minus 4 FCS bytes
 * Per spec:
 *   a value of 0 means RTS on all data/management packets
 *   a value > max MSDU size means no RTS
 * else RTS for data/management frames where MPDU is larger
 *   than RTS value.
 */
#define DEFAULT_RTS_THRESHOLD     2347U
#define MIN_RTS_THRESHOLD         0U
#define MAX_RTS_THRESHOLD         2347U
#define MAX_MSDU_SIZE         2304U
#define MAX_MPDU_SIZE         2346U
#define DEFAULT_BEACON_INTERVAL   200U
#define DEFAULT_SHORT_RETRY_LIMIT 7U
#define DEFAULT_LONG_RETRY_LIMIT  4U

#define IWL_NUM_SCAN_RATES         (2)


#define IEEE80211_DATA_LEN              2304
#define IEEE80211_4ADDR_LEN             30
#define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
#define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)

#define SUP_RATE_11A_MAX_NUM_CHANNELS  8
#define SUP_RATE_11B_MAX_NUM_CHANNELS  4
#define SUP_RATE_11G_MAX_NUM_CHANNELS  12

#define IWL_SUPPORTED_RATES_IE_LEN         8

#define IWL_INVALID_RATE     0xFF
#define IWL_INVALID_VALUE    -1

union iwl_ht_rate_supp {
    u16 rates;
    struct {
        u8 siso_rate;
        u8 mimo_rate;
    };
};

struct iwl_ht_config {
    bool single_chain_sufficient;
    enum ieee80211_smps_mode smps; /* current smps mode */
};

/* QoS structures */
struct iwl_qos_info {
    int qos_active;
    struct iwl_qosparam_cmd def_qos_parm;
};

enum iwl_agg_state {
    IWL_AGG_OFF = 0,
    IWL_AGG_STARTING,
    IWL_AGG_ON,
    IWL_EMPTYING_HW_QUEUE_ADDBA,
    IWL_EMPTYING_HW_QUEUE_DELBA,
};

struct iwl_ht_agg {
    u32 rate_n_flags;
    enum iwl_agg_state state;
    u16 txq_id;
    u16 ssn;
    bool wait_for_ba;
};

struct iwl_tid_data {
    u16 seq_number;
    u16 next_reclaimed;
    struct iwl_ht_agg agg;
};

/*
 * Structure should be accessed with sta_lock held. When station addition
 * is in progress (IWL_STA_UCODE_INPROGRESS) it is possible to access only
 * the commands (iwl_addsta_cmd and iwl_link_quality_cmd) without sta_lock
 * held.
 */
struct iwl_station_entry {
    struct iwl_addsta_cmd sta;
    u8 used, ctxid;
    struct iwl_link_quality_cmd *lq;
};

/*
 * iwl_station_priv: Driver's private station information
 *
 * When mac80211 creates a station it reserves some space (hw->sta_data_size)
 * in the structure for use by driver. This structure is places in that
 * space.
 */
struct iwl_station_priv {
    struct iwl_rxon_context *ctx;
    struct iwl_lq_sta lq_sta;
    atomic_t pending_frames;
    bool client;
    bool asleep;
    u8 max_agg_bufsize;
    u8 sta_id;
};

struct iwl_vif_priv {
    struct iwl_rxon_context *ctx;
    u8 ibss_bssid_sta_id;
};

struct iwl_sensitivity_ranges {
    u16 min_nrg_cck;

    u16 nrg_th_cck;
    u16 nrg_th_ofdm;

    u16 auto_corr_min_ofdm;
    u16 auto_corr_min_ofdm_mrc;
    u16 auto_corr_min_ofdm_x1;
    u16 auto_corr_min_ofdm_mrc_x1;

    u16 auto_corr_max_ofdm;
    u16 auto_corr_max_ofdm_mrc;
    u16 auto_corr_max_ofdm_x1;
    u16 auto_corr_max_ofdm_mrc_x1;

    u16 auto_corr_max_cck;
    u16 auto_corr_max_cck_mrc;
    u16 auto_corr_min_cck;
    u16 auto_corr_min_cck_mrc;

    u16 barker_corr_th_min;
    u16 barker_corr_th_min_mrc;
    u16 nrg_th_cca;
};


#define KELVIN_TO_CELSIUS(x) ((x)-273)
#define CELSIUS_TO_KELVIN(x) ((x)+273)


/******************************************************************************
 *
 * Functions implemented in core module which are forward declared here
 * for use by iwl-[4-5].c
 *
 * NOTE:  The implementation of these functions are not hardware specific
 * which is why they are in the core module files.
 *
 * Naming convention --
 * iwl_         <-- Is part of iwlwifi
 * iwlXXXX_     <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
 *
 ****************************************************************************/
extern void iwl_update_chain_flags(struct iwl_priv *priv);
extern const u8 iwl_bcast_addr[ETH_ALEN];

#define IWL_OPERATION_MODE_AUTO     0
#define IWL_OPERATION_MODE_HT_ONLY  1
#define IWL_OPERATION_MODE_MIXED    2
#define IWL_OPERATION_MODE_20MHZ    3

#define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000

/* Sensitivity and chain noise calibration */
#define INITIALIZATION_VALUE        0xFFFF
#define IWL_CAL_NUM_BEACONS     16
#define MAXIMUM_ALLOWED_PATHLOSS    15

#define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3

#define MAX_FA_OFDM  50
#define MIN_FA_OFDM  5
#define MAX_FA_CCK   50
#define MIN_FA_CCK   5

#define AUTO_CORR_STEP_OFDM       1

#define AUTO_CORR_STEP_CCK     3
#define AUTO_CORR_MAX_TH_CCK   160

#define NRG_DIFF               2
#define NRG_STEP_CCK           2
#define NRG_MARGIN             8
#define MAX_NUMBER_CCK_NO_FA 100

#define AUTO_CORR_CCK_MIN_VAL_DEF    (125)

#define CHAIN_A             0
#define CHAIN_B             1
#define CHAIN_C             2
#define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
#define ALL_BAND_FILTER         0xFF00
#define IN_BAND_FILTER          0xFF
#define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF

#define NRG_NUM_PREV_STAT_L     20
#define NUM_RX_CHAINS           3

enum iwlagn_false_alarm_state {
    IWL_FA_TOO_MANY = 0,
    IWL_FA_TOO_FEW = 1,
    IWL_FA_GOOD_RANGE = 2,
};

enum iwlagn_chain_noise_state {
    IWL_CHAIN_NOISE_ALIVE = 0,  /* must be 0 */
    IWL_CHAIN_NOISE_ACCUMULATE,
    IWL_CHAIN_NOISE_CALIBRATED,
    IWL_CHAIN_NOISE_DONE,
};

/* Sensitivity calib data */
struct iwl_sensitivity_data {
    u32 auto_corr_ofdm;
    u32 auto_corr_ofdm_mrc;
    u32 auto_corr_ofdm_x1;
    u32 auto_corr_ofdm_mrc_x1;
    u32 auto_corr_cck;
    u32 auto_corr_cck_mrc;

    u32 last_bad_plcp_cnt_ofdm;
    u32 last_fa_cnt_ofdm;
    u32 last_bad_plcp_cnt_cck;
    u32 last_fa_cnt_cck;

    u32 nrg_curr_state;
    u32 nrg_prev_state;
    u32 nrg_value[10];
    u8  nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
    u32 nrg_silence_ref;
    u32 nrg_energy_idx;
    u32 nrg_silence_idx;
    u32 nrg_th_cck;
    s32 nrg_auto_corr_silence_diff;
    u32 num_in_cck_no_fa;
    u32 nrg_th_ofdm;

    u16 barker_corr_th_min;
    u16 barker_corr_th_min_mrc;
    u16 nrg_th_cca;
};

/* Chain noise (differential Rx gain) calib data */
struct iwl_chain_noise_data {
    u32 active_chains;
    u32 chain_noise_a;
    u32 chain_noise_b;
    u32 chain_noise_c;
    u32 chain_signal_a;
    u32 chain_signal_b;
    u32 chain_signal_c;
    u16 beacon_count;
    u8 disconn_array[NUM_RX_CHAINS];
    u8 delta_gain_code[NUM_RX_CHAINS];
    u8 radio_write;
    u8 state;
};

enum {
    MEASUREMENT_READY = (1 << 0),
    MEASUREMENT_ACTIVE = (1 << 1),
};

/* reply_tx_statistics (for _agn devices) */
struct reply_tx_error_statistics {
    u32 pp_delay;
    u32 pp_few_bytes;
    u32 pp_bt_prio;
    u32 pp_quiet_period;
    u32 pp_calc_ttak;
    u32 int_crossed_retry;
    u32 short_limit;
    u32 long_limit;
    u32 fifo_underrun;
    u32 drain_flow;
    u32 rfkill_flush;
    u32 life_expire;
    u32 dest_ps;
    u32 host_abort;
    u32 bt_retry;
    u32 sta_invalid;
    u32 frag_drop;
    u32 tid_disable;
    u32 fifo_flush;
    u32 insuff_cf_poll;
    u32 fail_hw_drop;
    u32 sta_color_mismatch;
    u32 unknown;
};

/* reply_agg_tx_statistics (for _agn devices) */
struct reply_agg_tx_error_statistics {
    u32 underrun;
    u32 bt_prio;
    u32 few_bytes;
    u32 abort;
    u32 last_sent_ttl;
    u32 last_sent_try;
    u32 last_sent_bt_kill;
    u32 scd_query;
    u32 bad_crc32;
    u32 response;
    u32 dump_tx;
    u32 delay_tx;
    u32 unknown;
};

/*
 * schedule the timer to wake up every UCODE_TRACE_PERIOD milliseconds
 * to perform continuous uCode event logging operation if enabled
 */
#define UCODE_TRACE_PERIOD (10)

/*
 * iwl_event_log: current uCode event log position
 *
 * @ucode_trace: enable/disable ucode continuous trace timer
 * @num_wraps: how many times the event buffer wraps
 * @next_entry:  the entry just before the next one that uCode would fill
 * @non_wraps_count: counter for no wrap detected when dump ucode events
 * @wraps_once_count: counter for wrap once detected when dump ucode events
 * @wraps_more_count: counter for wrap more than once detected
 *            when dump ucode events
 */
struct iwl_event_log {
    bool ucode_trace;
    u32 num_wraps;
    u32 next_entry;
    int non_wraps_count;
    int wraps_once_count;
    int wraps_more_count;
};

#define IWL_DELAY_NEXT_FORCE_RF_RESET  (HZ*3)

/* BT Antenna Coupling Threshold (dB) */
#define IWL_BT_ANTENNA_COUPLING_THRESHOLD   (35)

/* Firmware reload counter and Timestamp */
#define IWL_MIN_RELOAD_DURATION     1000 /* 1000 ms */
#define IWL_MAX_CONTINUE_RELOAD_CNT 4


struct iwl_rf_reset {
    int reset_request_count;
    int reset_success_count;
    int reset_reject_count;
    unsigned long last_reset_jiffies;
};

enum iwl_rxon_context_id {
    IWL_RXON_CTX_BSS,
    IWL_RXON_CTX_PAN,

    NUM_IWL_RXON_CTX
};

/* extend beacon time format bit shifting  */
/*
 * for _agn devices
 * bits 31:22 - extended
 * bits 21:0  - interval
 */
#define IWLAGN_EXT_BEACON_TIME_POS  22

struct iwl_rxon_context {
    struct ieee80211_vif *vif;

    u8 mcast_queue;
    u8 ac_to_queue[IEEE80211_NUM_ACS];
    u8 ac_to_fifo[IEEE80211_NUM_ACS];

    /*
     * We could use the vif to indicate active, but we
     * also need it to be active during disabling when
     * we already removed the vif for type setting.
     */
    bool always_active, is_active;

    bool ht_need_multiple_chains;

    enum iwl_rxon_context_id ctxid;

    u32 interface_modes, exclusive_interface_modes;
    u8 unused_devtype, ap_devtype, ibss_devtype, station_devtype;

    /*
     * We declare this const so it can only be
     * changed via explicit cast within the
     * routines that actually update the physical
     * hardware.
     */
    const struct iwl_rxon_cmd active;
    struct iwl_rxon_cmd staging;

    struct iwl_rxon_time_cmd timing;

    struct iwl_qos_info qos_data;

    u8 bcast_sta_id, ap_sta_id;

    u8 rxon_cmd, rxon_assoc_cmd, rxon_timing_cmd;
    u8 qos_cmd;
    u8 wep_key_cmd;

    struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
    u8 key_mapping_keys;

    __le32 station_flags;

    int beacon_int;

    struct {
        bool non_gf_sta_present;
        u8 protection;
        bool enabled, is_40mhz;
        u8 extension_chan_offset;
    } ht;
};

enum iwl_scan_type {
    IWL_SCAN_NORMAL,
    IWL_SCAN_RADIO_RESET,
    IWL_SCAN_ROC,
};

struct iwl_hw_params {
    u8  tx_chains_num;
    u8  rx_chains_num;
    bool use_rts_for_aggregation;
    u32 ct_kill_threshold;
    u32 ct_kill_exit_threshold;

    const struct iwl_sensitivity_ranges *sens;
};

struct iwl_lib_ops {
    /* set hw dependent parameters */
    void (*set_hw_params)(struct iwl_priv *priv);
    int (*set_channel_switch)(struct iwl_priv *priv,
                  struct ieee80211_channel_switch *ch_switch);
    /* device specific configuration */
    void (*nic_config)(struct iwl_priv *priv);

    /* temperature */
    void (*temperature)(struct iwl_priv *priv);
};

struct iwl_wipan_noa_data {
    struct rcu_head rcu_head;
    u32 length;
    u8 data[];
};

/* Calibration disabling bit mask */
enum {
    IWL_CALIB_ENABLE_ALL            = 0,

    IWL_SENSITIVITY_CALIB_DISABLED      = BIT(0),
    IWL_CHAIN_NOISE_CALIB_DISABLED      = BIT(1),
    IWL_TX_POWER_CALIB_DISABLED     = BIT(2),

    IWL_CALIB_DISABLE_ALL           = 0xFFFFFFFF,
};

#define IWL_OP_MODE_GET_DVM(_iwl_op_mode) \
    ((struct iwl_priv *) ((_iwl_op_mode)->op_mode_specific))

#define IWL_MAC80211_GET_DVM(_hw) \
    ((struct iwl_priv *) ((struct iwl_op_mode *) \
    (_hw)->priv)->op_mode_specific)

struct iwl_priv {

    struct iwl_trans *trans;
    struct device *dev;     /* for debug prints only */
    const struct iwl_cfg *cfg;
    const struct iwl_fw *fw;
    const struct iwl_lib_ops *lib;
    unsigned long status;

    spinlock_t sta_lock;
    struct mutex mutex;

    unsigned long transport_queue_stop;
    bool passive_no_rx;
#define IWL_INVALID_MAC80211_QUEUE  0xff
    u8 queue_to_mac80211[IWL_MAX_HW_QUEUES];
    atomic_t queue_stop_count[IWL_MAX_HW_QUEUES];

    unsigned long agg_q_alloc[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];

    /* ieee device used by generic ieee processing code */
    struct ieee80211_hw *hw;

    struct list_head calib_results;

    struct workqueue_struct *workqueue;

    struct iwl_hw_params hw_params;

    enum ieee80211_band band;
    u8 valid_contexts;

    int (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
                       struct iwl_rx_cmd_buffer *rxb,
                       struct iwl_device_cmd *cmd);

    struct iwl_notif_wait_data notif_wait;

    /* spectrum measurement report caching */
    struct iwl_spectrum_notification measure_report;
    u8 measurement_status;

#define IWL_OWNERSHIP_DRIVER    0
#define IWL_OWNERSHIP_TM    1
    u8 ucode_owner;

    /* ucode beacon time */
    u32 ucode_beacon_time;
    int missed_beacon_threshold;

    /* track IBSS manager (last beacon) status */
    u32 ibss_manager;

    /* jiffies when last recovery from statistics was performed */
    unsigned long rx_statistics_jiffies;

    /*counters */
    u32 rx_handlers_stats[REPLY_MAX];

    /* rf reset */
    struct iwl_rf_reset rf_reset;

    /* firmware reload counter and timestamp */
    unsigned long reload_jiffies;
    int reload_count;
    bool ucode_loaded;
    bool init_ucode_run;        /* Don't run init uCode again */

    u8 plcp_delta_threshold;

    /* thermal calibration */
    s32 temperature;    /* Celsius */
    s32 last_temperature;

    struct iwl_wipan_noa_data __rcu *noa_data;

    /* Scan related variables */
    unsigned long scan_start;
    unsigned long scan_start_tsf;
    void *scan_cmd;
    enum ieee80211_band scan_band;
    struct cfg80211_scan_request *scan_request;
    struct ieee80211_vif *scan_vif;
    enum iwl_scan_type scan_type;
    u8 scan_tx_ant[IEEE80211_NUM_BANDS];
    u8 mgmt_tx_ant;

    /* max number of station keys */
    u8 sta_key_max_num;

    bool new_scan_threshold_behaviour;

    bool wowlan;

    /* EEPROM MAC addresses */
    struct mac_address addresses[2];

    struct iwl_rxon_context contexts[NUM_IWL_RXON_CTX];

    __le16 switch_channel;

    u8 start_calib;
    struct iwl_sensitivity_data sensitivity_data;
    struct iwl_chain_noise_data chain_noise_data;
    __le16 sensitivity_tbl[HD_TABLE_SIZE];
    __le16 enhance_sensitivity_tbl[ENHANCE_HD_TABLE_ENTRIES];

    struct iwl_ht_config current_ht_config;

    /* Rate scaling data */
    u8 retry_rate;

    int activity_timer_active;

    struct iwl_power_mgr power_data;
    struct iwl_tt_mgmt thermal_throttle;

    /* station table variables */
    int num_stations;
    struct iwl_station_entry stations[IWLAGN_STATION_COUNT];
    unsigned long ucode_key_table;
    struct iwl_tid_data tid_data[IWLAGN_STATION_COUNT][IWL_MAX_TID_COUNT];
    atomic_t num_aux_in_flight;

    u8 mac80211_registered;

    /* Indication if ieee80211_ops->open has been called */
    u8 is_open;

    enum nl80211_iftype iw_mode;

    /* Last Rx'd beacon timestamp */
    u64 timestamp;

    struct {
        __le32 flag;
        struct statistics_general_common common;
        struct statistics_rx_non_phy rx_non_phy;
        struct statistics_rx_phy rx_ofdm;
        struct statistics_rx_ht_phy rx_ofdm_ht;
        struct statistics_rx_phy rx_cck;
        struct statistics_tx tx;
#ifdef CONFIG_IWLWIFI_DEBUGFS
        struct statistics_bt_activity bt_activity;
        __le32 num_bt_kills, accum_num_bt_kills;
#endif
        spinlock_t lock;
    } statistics;
#ifdef CONFIG_IWLWIFI_DEBUGFS
    struct {
        struct statistics_general_common common;
        struct statistics_rx_non_phy rx_non_phy;
        struct statistics_rx_phy rx_ofdm;
        struct statistics_rx_ht_phy rx_ofdm_ht;
        struct statistics_rx_phy rx_cck;
        struct statistics_tx tx;
        struct statistics_bt_activity bt_activity;
    } accum_stats, delta_stats, max_delta_stats;
#endif

    /*
     * reporting the number of tids has AGG on. 0 means
     * no AGGREGATION
     */
    u8 agg_tids_count;

    struct iwl_rx_phy_res last_phy_res;
    u32 ampdu_ref;
    bool last_phy_res_valid;

    /*
     * chain noise reset and gain commands are the
     * two extra calibration commands follows the standard
     * phy calibration commands
     */
    u8 phy_calib_chain_noise_reset_cmd;
    u8 phy_calib_chain_noise_gain_cmd;

    /* counts reply_tx error */
    struct reply_tx_error_statistics reply_tx_stats;
    struct reply_agg_tx_error_statistics reply_agg_tx_stats;

    /* remain-on-channel offload support */
    struct ieee80211_channel *hw_roc_channel;
    struct delayed_work hw_roc_disable_work;
    enum nl80211_channel_type hw_roc_chantype;
    int hw_roc_duration;
    bool hw_roc_setup, hw_roc_start_notified;

    /* bt coex */
    u8 bt_enable_flag;
    u8 bt_status;
    u8 bt_traffic_load, last_bt_traffic_load;
    bool bt_ch_announce;
    bool bt_full_concurrent;
    bool bt_ant_couple_ok;
    __le32 kill_ack_mask;
    __le32 kill_cts_mask;
    __le16 bt_valid;
    bool reduced_txpower;
    u16 bt_on_thresh;
    u16 bt_duration;
    u16 dynamic_frag_thresh;
    u8 bt_ci_compliance;
    struct work_struct bt_traffic_change_work;
    bool bt_enable_pspoll;
    struct iwl_rxon_context *cur_rssi_ctx;
    bool bt_is_sco;

    struct work_struct restart;
    struct work_struct scan_completed;
    struct work_struct abort_scan;

    struct work_struct beacon_update;
    struct iwl_rxon_context *beacon_ctx;
    struct sk_buff *beacon_skb;
    void *beacon_cmd;

    struct work_struct tt_work;
    struct work_struct ct_enter;
    struct work_struct ct_exit;
    struct work_struct start_internal_scan;
    struct work_struct tx_flush;
    struct work_struct bt_full_concurrency;
    struct work_struct bt_runtime_config;

    struct delayed_work scan_check;

    /* TX Power settings */
    s8 tx_power_user_lmt;
    s8 tx_power_next;

#ifdef CONFIG_IWLWIFI_DEBUGFS
    /* debugfs */
    struct dentry *debugfs_dir;
    u32 dbgfs_sram_offset, dbgfs_sram_len;
    bool disable_ht40;
    void *wowlan_sram;
#endif /* CONFIG_IWLWIFI_DEBUGFS */

    struct iwl_eeprom_data *eeprom_data;
    /* eeprom blob for debugfs/testmode */
    u8 *eeprom_blob;
    size_t eeprom_blob_size;

    struct work_struct txpower_work;
    u32 calib_disabled;
    struct work_struct run_time_calib_work;
    struct timer_list statistics_periodic;
    struct timer_list ucode_trace;

    struct iwl_event_log event_log;

    struct led_classdev led;
    unsigned long blink_on, blink_off;
    bool led_registered;

#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
    struct iwl_test tst;
    u32 tm_fixed_rate;
#endif

    /* WoWLAN GTK rekey data */
    u8 kck[NL80211_KCK_LEN], kek[NL80211_KEK_LEN];
    __le64 replay_ctr;
    __le16 last_seq_ctl;
    bool have_rekey_data;

    /* device_pointers: pointers to ucode event tables */
    struct {
        u32 error_event_table;
        u32 log_event_table;
    } device_pointers;

    /* indicator of loaded ucode image */
    enum iwl_ucode_type cur_ucode;
}; /*iwl_priv */

static inline struct iwl_rxon_context *
iwl_rxon_ctx_from_vif(struct ieee80211_vif *vif)
{
    struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;

    return vif_priv->ctx;
}

#define for_each_context(priv, ctx)             \
    for (ctx = &priv->contexts[IWL_RXON_CTX_BSS];       \
         ctx < &priv->contexts[NUM_IWL_RXON_CTX]; ctx++)    \
        if (priv->valid_contexts & BIT(ctx->ctxid))

static inline int iwl_is_associated_ctx(struct iwl_rxon_context *ctx)
{
    return (ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
}

static inline int iwl_is_associated(struct iwl_priv *priv,
                    enum iwl_rxon_context_id ctxid)
{
    return iwl_is_associated_ctx(&priv->contexts[ctxid]);
}

static inline int iwl_is_any_associated(struct iwl_priv *priv)
{
    struct iwl_rxon_context *ctx;
    for_each_context(priv, ctx)
        if (iwl_is_associated_ctx(ctx))
            return true;
    return false;
}

#endif              /* __iwl_dev_h__ */