LXR linux/drivers/net/wireless/ath/carl9170/carl9170.h

   1/*
   2 * Atheros CARL9170 driver
   3 *
   4 * Driver specific definitions
   5 *
   6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7 * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License as published by
  11 * the Free Software Foundation; either version 2 of the License, or
  12 * (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 * GNU General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; see the file COPYING.  If not, see
  21 * http://www.gnu.org/licenses/.
  22 *
  23 * This file incorporates work covered by the following copyright and
  24 * permission notice:
  25 *    Copyright (c) 2007-2008 Atheros Communications, Inc.
  26 *
  27 *    Permission to use, copy, modify, and/or distribute this software for any
  28 *    purpose with or without fee is hereby granted, provided that the above
  29 *    copyright notice and this permission notice appear in all copies.
  30 *
  31 *    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  32 *    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  33 *    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  34 *    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  35 *    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  36 *    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  37 *    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  38 */
  39#ifndef __CARL9170_H
  40#define __CARL9170_H
  41
  42#include <linux/kernel.h>
  43#include <linux/firmware.h>
  44#include <linux/completion.h>
  45#include <linux/spinlock.h>
  46#include <linux/hw_random.h>
  47#include <net/cfg80211.h>
  48#include <net/mac80211.h>
  49#include <linux/usb.h>
  50#ifdef CONFIG_CARL9170_LEDS
  51#include <linux/leds.h>
  52#endif /* CONFIG_CARL9170_LEDS */
  53#ifdef CONFIG_CARL9170_WPC
  54#include <linux/input.h>
  55#endif /* CONFIG_CARL9170_WPC */
  56#include "eeprom.h"
  57#include "wlan.h"
  58#include "hw.h"
  59#include "fwdesc.h"
  60#include "fwcmd.h"
  61#include "../regd.h"
  62
  63#ifdef CONFIG_CARL9170_DEBUGFS
  64#include "debug.h"
  65#endif /* CONFIG_CARL9170_DEBUGFS */
  66
  67#define CARL9170FW_NAME "carl9170-1.fw"
  68
  69#define PAYLOAD_MAX     (CARL9170_MAX_CMD_LEN / 4 - 1)
  70
  71static const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 };
  72
  73#define CARL9170_MAX_RX_BUFFER_SIZE             8192
  74
  75enum carl9170_device_state {
  76        CARL9170_UNKNOWN_STATE,
  77        CARL9170_STOPPED,
  78        CARL9170_IDLE,
  79        CARL9170_STARTED,
  80};
  81
  82#define WME_BA_BMP_SIZE                 64
  83#define CARL9170_TX_USER_RATE_TRIES     3
  84
  85#define TID_TO_WME_AC(_tid)                             \
  86        ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE :   \
  87         (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK :   \
  88         (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI :   \
  89         IEEE80211_AC_VO)
  90
  91#define SEQ_DIFF(_start, _seq) \
  92        (((_start) - (_seq)) & 0x0fff)
  93#define SEQ_PREV(_seq) \
  94        (((_seq) - 1) & 0x0fff)
  95#define SEQ_NEXT(_seq) \
  96        (((_seq) + 1) & 0x0fff)
  97#define BAW_WITHIN(_start, _bawsz, _seqno) \
  98        ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
  99
 100enum carl9170_tid_state {
 101        CARL9170_TID_STATE_INVALID,
 102        CARL9170_TID_STATE_KILLED,
 103        CARL9170_TID_STATE_SHUTDOWN,
 104        CARL9170_TID_STATE_SUSPEND,
 105        CARL9170_TID_STATE_PROGRESS,
 106        CARL9170_TID_STATE_IDLE,
 107        CARL9170_TID_STATE_XMIT,
 108};
 109
 110#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
 111#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
 112#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
 113
 114struct carl9170_sta_tid {
 115        /* must be the first entry! */
 116        struct list_head list;
 117
 118        /* temporary list for RCU unlink procedure */
 119        struct list_head tmp_list;
 120
 121        /* lock for the following data structures */
 122        spinlock_t lock;
 123
 124        unsigned int counter;
 125        enum carl9170_tid_state state;
 126        u8 tid;         /* TID number ( 0 - 15 ) */
 127        u16 max;        /* max. AMPDU size */
 128
 129        u16 snx;        /* awaiting _next_ frame */
 130        u16 hsn;        /* highest _queued_ sequence */
 131        u16 bsn;        /* base of the tx/agg bitmap */
 132        unsigned long bitmap[CARL9170_BAW_SIZE];
 133
 134        /* Preaggregation reorder queue */
 135        struct sk_buff_head queue;
 136
 137        struct ieee80211_sta *sta;
 138        struct ieee80211_vif *vif;
 139};
 140
 141#define CARL9170_QUEUE_TIMEOUT          256
 142#define CARL9170_BUMP_QUEUE             1000
 143#define CARL9170_TX_TIMEOUT             2500
 144#define CARL9170_JANITOR_DELAY          128
 145#define CARL9170_QUEUE_STUCK_TIMEOUT    5500
 146#define CARL9170_STAT_WORK              30000
 147
 148#define CARL9170_NUM_TX_AGG_MAX         30
 149
 150/*
 151 * Tradeoff between stability/latency and speed.
 152 *
 153 * AR9170_TXQ_DEPTH is devised by dividing the amount of available
 154 * tx buffers with the size of a full ethernet frame + overhead.
 155 *
 156 * Naturally: The higher the limit, the faster the device CAN send.
 157 * However, even a slight over-commitment at the wrong time and the
 158 * hardware is doomed to send all already-queued frames at suboptimal
 159 * rates. This in turn leads to an enormous amount of unsuccessful
 160 * retries => Latency goes up, whereas the throughput goes down. CRASH!
 161 */
 162#define CARL9170_NUM_TX_LIMIT_HARD      ((AR9170_TXQ_DEPTH * 3) / 2)
 163#define CARL9170_NUM_TX_LIMIT_SOFT      (AR9170_TXQ_DEPTH)
 164
 165struct carl9170_tx_queue_stats {
 166        unsigned int count;
 167        unsigned int limit;
 168        unsigned int len;
 169};
 170
 171struct carl9170_vif {
 172        unsigned int id;
 173        struct ieee80211_vif __rcu *vif;
 174};
 175
 176struct carl9170_vif_info {
 177        struct list_head list;
 178        bool active;
 179        unsigned int id;
 180        struct sk_buff *beacon;
 181        bool enable_beacon;
 182};
 183
 184#define AR9170_NUM_RX_URBS      16
 185#define AR9170_NUM_RX_URBS_MUL  2
 186#define AR9170_NUM_TX_URBS      8
 187#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
 188
 189enum carl9170_device_features {
 190        CARL9170_WPS_BUTTON             = BIT(0),
 191        CARL9170_ONE_LED                = BIT(1),
 192};
 193
 194#ifdef CONFIG_CARL9170_LEDS
 195struct ar9170;
 196
 197struct carl9170_led {
 198        struct ar9170 *ar;
 199        struct led_classdev l;
 200        char name[32];
 201        unsigned int toggled;
 202        bool last_state;
 203        bool registered;
 204};
 205#endif /* CONFIG_CARL9170_LEDS */
 206
 207enum carl9170_restart_reasons {
 208        CARL9170_RR_NO_REASON = 0,
 209        CARL9170_RR_FATAL_FIRMWARE_ERROR,
 210        CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
 211        CARL9170_RR_WATCHDOG,
 212        CARL9170_RR_STUCK_TX,
 213        CARL9170_RR_UNRESPONSIVE_DEVICE,
 214        CARL9170_RR_COMMAND_TIMEOUT,
 215        CARL9170_RR_TOO_MANY_PHY_ERRORS,
 216        CARL9170_RR_LOST_RSP,
 217        CARL9170_RR_INVALID_RSP,
 218        CARL9170_RR_USER_REQUEST,
 219
 220        __CARL9170_RR_LAST,
 221};
 222
 223enum carl9170_erp_modes {
 224        CARL9170_ERP_INVALID,
 225        CARL9170_ERP_AUTO,
 226        CARL9170_ERP_MAC80211,
 227        CARL9170_ERP_OFF,
 228        CARL9170_ERP_CTS,
 229        CARL9170_ERP_RTS,
 230        __CARL9170_ERP_NUM,
 231};
 232
 233struct ar9170 {
 234        struct ath_common common;
 235        struct ieee80211_hw *hw;
 236        struct mutex mutex;
 237        enum carl9170_device_state state;
 238        spinlock_t state_lock;
 239        enum carl9170_restart_reasons last_reason;
 240        bool registered;
 241
 242        /* USB */
 243        struct usb_device *udev;
 244        struct usb_interface *intf;
 245        struct usb_anchor rx_anch;
 246        struct usb_anchor rx_work;
 247        struct usb_anchor rx_pool;
 248        struct usb_anchor tx_wait;
 249        struct usb_anchor tx_anch;
 250        struct usb_anchor tx_cmd;
 251        struct usb_anchor tx_err;
 252        struct tasklet_struct usb_tasklet;
 253        atomic_t tx_cmd_urbs;
 254        atomic_t tx_anch_urbs;
 255        atomic_t rx_anch_urbs;
 256        atomic_t rx_work_urbs;
 257        atomic_t rx_pool_urbs;
 258        kernel_ulong_t features;
 259        bool usb_ep_cmd_is_bulk;
 260
 261        /* firmware settings */
 262        struct completion fw_load_wait;
 263        struct completion fw_boot_wait;
 264        struct {
 265                const struct carl9170fw_desc_head *desc;
 266                const struct firmware *fw;
 267                unsigned int offset;
 268                unsigned int address;
 269                unsigned int cmd_bufs;
 270                unsigned int api_version;
 271                unsigned int vif_num;
 272                unsigned int err_counter;
 273                unsigned int bug_counter;
 274                u32 beacon_addr;
 275                unsigned int beacon_max_len;
 276                bool rx_stream;
 277                bool tx_stream;
 278                bool rx_filter;
 279                bool hw_counters;
 280                unsigned int mem_blocks;
 281                unsigned int mem_block_size;
 282                unsigned int rx_size;
 283                unsigned int tx_seq_table;
 284                bool ba_filter;
 285                bool disable_offload_fw;
 286        } fw;
 287
 288        /* interface configuration combinations */
 289        struct ieee80211_iface_limit if_comb_limits[1];
 290        struct ieee80211_iface_combination if_combs[1];
 291
 292        /* reset / stuck frames/queue detection */
 293        struct work_struct restart_work;
 294        struct work_struct ping_work;
 295        unsigned int restart_counter;
 296        unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
 297        unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
 298        bool needs_full_reset;
 299        bool force_usb_reset;
 300        atomic_t pending_restarts;
 301
 302        /* interface mode settings */
 303        struct list_head vif_list;
 304        unsigned long vif_bitmap;
 305        unsigned int vifs;
 306        struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
 307
 308        /* beaconing */
 309        spinlock_t beacon_lock;
 310        unsigned int global_pretbtt;
 311        unsigned int global_beacon_int;
 312        struct carl9170_vif_info __rcu *beacon_iter;
 313        unsigned int beacon_enabled;
 314
 315        /* cryptographic engine */
 316        u64 usedkeys;
 317        bool rx_software_decryption;
 318        bool disable_offload;
 319
 320        /* filter settings */
 321        u64 cur_mc_hash;
 322        u32 cur_filter;
 323        unsigned int filter_state;
 324        unsigned int rx_filter_caps;
 325        bool sniffer_enabled;
 326
 327        /* MAC */
 328        enum carl9170_erp_modes erp_mode;
 329
 330        /* PHY */
 331        struct ieee80211_channel *channel;
 332        unsigned int num_channels;
 333        int noise[4];
 334        unsigned int chan_fail;
 335        unsigned int total_chan_fail;
 336        u8 heavy_clip;
 337        u8 ht_settings;
 338        struct {
 339                u64 active;     /* usec */
 340                u64 cca;        /* usec */
 341                u64 tx_time;    /* usec */
 342                u64 rx_total;
 343                u64 rx_overrun;
 344        } tally;
 345        struct delayed_work stat_work;
 346        struct survey_info *survey;
 347
 348        /* power calibration data */
 349        u8 power_5G_leg[4];
 350        u8 power_2G_cck[4];
 351        u8 power_2G_ofdm[4];
 352        u8 power_5G_ht20[8];
 353        u8 power_5G_ht40[8];
 354        u8 power_2G_ht20[8];
 355        u8 power_2G_ht40[8];
 356
 357#ifdef CONFIG_CARL9170_LEDS
 358        /* LED */
 359        struct delayed_work led_work;
 360        struct carl9170_led leds[AR9170_NUM_LEDS];
 361#endif /* CONFIG_CARL9170_LEDS */
 362
 363        /* qos queue settings */
 364        spinlock_t tx_stats_lock;
 365        struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
 366        struct ieee80211_tx_queue_params edcf[5];
 367        struct completion tx_flush;
 368
 369        /* CMD */
 370        int cmd_seq;
 371        int readlen;
 372        u8 *readbuf;
 373        spinlock_t cmd_lock;
 374        struct completion cmd_wait;
 375        union {
 376                __le32 cmd_buf[PAYLOAD_MAX + 1];
 377                struct carl9170_cmd cmd;
 378                struct carl9170_rsp rsp;
 379        };
 380
 381        /* statistics */
 382        unsigned int tx_dropped;
 383        unsigned int tx_ack_failures;
 384        unsigned int tx_fcs_errors;
 385        unsigned int rx_dropped;
 386
 387        /* EEPROM */
 388        struct ar9170_eeprom eeprom;
 389
 390        /* tx queuing */
 391        struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 392        struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 393        struct delayed_work tx_janitor;
 394        unsigned long tx_janitor_last_run;
 395        bool tx_schedule;
 396
 397        /* tx ampdu */
 398        struct work_struct ampdu_work;
 399        spinlock_t tx_ampdu_list_lock;
 400        struct carl9170_sta_tid __rcu *tx_ampdu_iter;
 401        struct list_head tx_ampdu_list;
 402        atomic_t tx_ampdu_upload;
 403        atomic_t tx_ampdu_scheduler;
 404        atomic_t tx_total_pending;
 405        atomic_t tx_total_queued;
 406        unsigned int tx_ampdu_list_len;
 407        int current_density;
 408        int current_factor;
 409        bool tx_ampdu_schedule;
 410
 411        /* internal memory management */
 412        spinlock_t mem_lock;
 413        unsigned long *mem_bitmap;
 414        atomic_t mem_free_blocks;
 415        atomic_t mem_allocs;
 416
 417        /* rxstream mpdu merge */
 418        struct ar9170_rx_head rx_plcp;
 419        bool rx_has_plcp;
 420        struct sk_buff *rx_failover;
 421        int rx_failover_missing;
 422        u32 ampdu_ref;
 423
 424        /* FIFO for collecting outstanding BlockAckRequest */
 425        struct list_head bar_list[__AR9170_NUM_TXQ];
 426        spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
 427
 428#ifdef CONFIG_CARL9170_WPC
 429        struct {
 430                bool pbc_state;
 431                struct input_dev *pbc;
 432                char name[32];
 433                char phys[32];
 434        } wps;
 435#endif /* CONFIG_CARL9170_WPC */
 436
 437#ifdef CONFIG_CARL9170_DEBUGFS
 438        struct carl9170_debug debug;
 439        struct dentry *debug_dir;
 440#endif /* CONFIG_CARL9170_DEBUGFS */
 441
 442        /* PSM */
 443        struct work_struct ps_work;
 444        struct {
 445                unsigned int dtim_counter;
 446                unsigned long last_beacon;
 447                unsigned long last_action;
 448                unsigned long last_slept;
 449                unsigned int sleep_ms;
 450                unsigned int off_override;
 451                bool state;
 452        } ps;
 453
 454#ifdef CONFIG_CARL9170_HWRNG
 455# define CARL9170_HWRNG_CACHE_SIZE      CARL9170_MAX_CMD_PAYLOAD_LEN
 456        struct {
 457                struct hwrng rng;
 458                bool initialized;
 459                char name[30 + 1];
 460                u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
 461                unsigned int cache_idx;
 462        } rng;
 463#endif /* CONFIG_CARL9170_HWRNG */
 464};
 465
 466enum carl9170_ps_off_override_reasons {
 467        PS_OFF_VIF      = BIT(0),
 468        PS_OFF_BCN      = BIT(1),
 469};
 470
 471struct carl9170_bar_list_entry {
 472        struct list_head list;
 473        struct rcu_head head;
 474        struct sk_buff *skb;
 475};
 476
 477struct carl9170_ba_stats {
 478        u8 ampdu_len;
 479        u8 ampdu_ack_len;
 480        bool clear;
 481        bool req;
 482};
 483
 484struct carl9170_sta_info {
 485        bool ht_sta;
 486        bool sleeping;
 487        atomic_t pending_frames;
 488        unsigned int ampdu_max_len;
 489        struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
 490        struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
 491};
 492
 493struct carl9170_tx_info {
 494        unsigned long timeout;
 495        struct ar9170 *ar;
 496        struct kref ref;
 497};
 498
 499#define CHK_DEV_STATE(a, s)     (((struct ar9170 *)a)->state >= (s))
 500#define IS_INITIALIZED(a)       (CHK_DEV_STATE(a, CARL9170_STOPPED))
 501#define IS_ACCEPTING_CMD(a)     (CHK_DEV_STATE(a, CARL9170_IDLE))
 502#define IS_STARTED(a)           (CHK_DEV_STATE(a, CARL9170_STARTED))
 503
 504static inline void __carl9170_set_state(struct ar9170 *ar,
 505        enum carl9170_device_state newstate)
 506{
 507        ar->state = newstate;
 508}
 509
 510static inline void carl9170_set_state(struct ar9170 *ar,
 511        enum carl9170_device_state newstate)
 512{
 513        unsigned long flags;
 514
 515        spin_lock_irqsave(&ar->state_lock, flags);
 516        __carl9170_set_state(ar, newstate);
 517        spin_unlock_irqrestore(&ar->state_lock, flags);
 518}
 519
 520static inline void carl9170_set_state_when(struct ar9170 *ar,
 521        enum carl9170_device_state min, enum carl9170_device_state newstate)
 522{
 523        unsigned long flags;
 524
 525        spin_lock_irqsave(&ar->state_lock, flags);
 526        if (CHK_DEV_STATE(ar, min))
 527                __carl9170_set_state(ar, newstate);
 528        spin_unlock_irqrestore(&ar->state_lock, flags);
 529}
 530
 531/* exported interface */
 532void *carl9170_alloc(size_t priv_size);
 533int carl9170_register(struct ar9170 *ar);
 534void carl9170_unregister(struct ar9170 *ar);
 535void carl9170_free(struct ar9170 *ar);
 536void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 537void carl9170_ps_check(struct ar9170 *ar);
 538
 539/* USB back-end */
 540int carl9170_usb_open(struct ar9170 *ar);
 541void carl9170_usb_stop(struct ar9170 *ar);
 542void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 543void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 544int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 545                      u32 plen, void *payload, u32 rlen, void *resp);
 546int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 547                        const bool free_buf);
 548int carl9170_usb_restart(struct ar9170 *ar);
 549void carl9170_usb_reset(struct ar9170 *ar);
 550
 551/* MAC */
 552int carl9170_init_mac(struct ar9170 *ar);
 553int carl9170_set_qos(struct ar9170 *ar);
 554int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 555int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 556                             const u8 *mac);
 557int carl9170_set_operating_mode(struct ar9170 *ar);
 558int carl9170_set_beacon_timers(struct ar9170 *ar);
 559int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 560int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 561int carl9170_set_ampdu_settings(struct ar9170 *ar);
 562int carl9170_set_slot_time(struct ar9170 *ar);
 563int carl9170_set_mac_rates(struct ar9170 *ar);
 564int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 565int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
 566        const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
 567int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 568int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
 569
 570/* RX */
 571void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 572void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 573
 574/* TX */
 575void carl9170_op_tx(struct ieee80211_hw *hw,
 576                    struct ieee80211_tx_control *control,
 577                    struct sk_buff *skb);
 578void carl9170_tx_janitor(struct work_struct *work);
 579void carl9170_tx_process_status(struct ar9170 *ar,
 580                                const struct carl9170_rsp *cmd);
 581void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 582                        const bool success);
 583void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 584void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 585void carl9170_tx_scheduler(struct ar9170 *ar);
 586void carl9170_tx_get_skb(struct sk_buff *skb);
 587int carl9170_tx_put_skb(struct sk_buff *skb);
 588int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 589
 590/* LEDs */
 591#ifdef CONFIG_CARL9170_LEDS
 592int carl9170_led_register(struct ar9170 *ar);
 593void carl9170_led_unregister(struct ar9170 *ar);
 594#endif /* CONFIG_CARL9170_LEDS */
 595int carl9170_led_init(struct ar9170 *ar);
 596int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 597
 598/* PHY / RF */
 599int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 600                         enum nl80211_channel_type bw);
 601int carl9170_get_noisefloor(struct ar9170 *ar);
 602
 603/* FW */
 604int carl9170_parse_firmware(struct ar9170 *ar);
 605
 606extern struct ieee80211_rate __carl9170_ratetable[];
 607extern int modparam_noht;
 608
 609static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
 610{
 611        return container_of(carl_vif, struct ar9170,
 612                            vif_priv[carl_vif->id]);
 613}
 614
 615static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
 616{
 617        return (void *)((struct _carl9170_tx_superframe *)
 618                skb->data)->frame_data;
 619}
 620
 621static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 622{
 623        return le16_to_cpu(hdr->seq_ctrl) >> 4;
 624}
 625
 626static inline u16 carl9170_get_seq(struct sk_buff *skb)
 627{
 628        return get_seq_h(carl9170_get_hdr(skb));
 629}
 630
 631static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
 632{
 633        return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
 634}
 635
 636static inline u16 carl9170_get_tid(struct sk_buff *skb)
 637{
 638        return get_tid_h(carl9170_get_hdr(skb));
 639}
 640
 641static inline struct ieee80211_vif *
 642carl9170_get_vif(struct carl9170_vif_info *priv)
 643{
 644        return container_of((void *)priv, struct ieee80211_vif, drv_priv);
 645}
 646
 647/* Protected by ar->mutex or RCU */
 648static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
 649{
 650        struct carl9170_vif_info *cvif;
 651
 652        list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
 653                if (cvif->active)
 654                        return carl9170_get_vif(cvif);
 655        }
 656
 657        return NULL;
 658}
 659
 660static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
 661{
 662        bool ret;
 663
 664        rcu_read_lock();
 665        ret = (carl9170_get_main_vif(ar) == vif);
 666        rcu_read_unlock();
 667        return ret;
 668}
 669
 670#endif /* __CARL9170_H */
 671