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
  73enum carl9170_rf_init_mode {
  74        CARL9170_RFI_NONE,
  75        CARL9170_RFI_WARM,
  76        CARL9170_RFI_COLD,
  77};
  78
  79#define CARL9170_MAX_RX_BUFFER_SIZE             8192
  80
  81enum carl9170_device_state {
  82        CARL9170_UNKNOWN_STATE,
  83        CARL9170_STOPPED,
  84        CARL9170_IDLE,
  85        CARL9170_STARTED,
  86};
  87
  88#define CARL9170_NUM_TID                16
  89#define WME_BA_BMP_SIZE                 64
  90#define CARL9170_TX_USER_RATE_TRIES     3
  91
  92#define WME_AC_BE   2
  93#define WME_AC_BK   3
  94#define WME_AC_VI   1
  95#define WME_AC_VO   0
  96
  97#define TID_TO_WME_AC(_tid)                             \
  98        ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \
  99         (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \
 100         (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \
 101         WME_AC_VO)
 102
 103#define SEQ_DIFF(_start, _seq) \
 104        (((_start) - (_seq)) & 0x0fff)
 105#define SEQ_PREV(_seq) \
 106        (((_seq) - 1) & 0x0fff)
 107#define SEQ_NEXT(_seq) \
 108        (((_seq) + 1) & 0x0fff)
 109#define BAW_WITHIN(_start, _bawsz, _seqno) \
 110        ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
 111
 112enum carl9170_tid_state {
 113        CARL9170_TID_STATE_INVALID,
 114        CARL9170_TID_STATE_KILLED,
 115        CARL9170_TID_STATE_SHUTDOWN,
 116        CARL9170_TID_STATE_SUSPEND,
 117        CARL9170_TID_STATE_PROGRESS,
 118        CARL9170_TID_STATE_IDLE,
 119        CARL9170_TID_STATE_XMIT,
 120};
 121
 122#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
 123#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
 124#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
 125
 126struct carl9170_sta_tid {
 127        /* must be the first entry! */
 128        struct list_head list;
 129
 130        /* temporary list for RCU unlink procedure */
 131        struct list_head tmp_list;
 132
 133        /* lock for the following data structures */
 134        spinlock_t lock;
 135
 136        unsigned int counter;
 137        enum carl9170_tid_state state;
 138        u8 tid;         /* TID number ( 0 - 15 ) */
 139        u16 max;        /* max. AMPDU size */
 140
 141        u16 snx;        /* awaiting _next_ frame */
 142        u16 hsn;        /* highest _queued_ sequence */
 143        u16 bsn;        /* base of the tx/agg bitmap */
 144        unsigned long bitmap[CARL9170_BAW_SIZE];
 145
 146        /* Preaggregation reorder queue */
 147        struct sk_buff_head queue;
 148};
 149
 150#define CARL9170_QUEUE_TIMEOUT          256
 151#define CARL9170_BUMP_QUEUE             1000
 152#define CARL9170_TX_TIMEOUT             2500
 153#define CARL9170_JANITOR_DELAY          128
 154#define CARL9170_QUEUE_STUCK_TIMEOUT    5500
 155#define CARL9170_STAT_WORK              30000
 156
 157#define CARL9170_NUM_TX_AGG_MAX         30
 158
 159/*
 160 * Tradeoff between stability/latency and speed.
 161 *
 162 * AR9170_TXQ_DEPTH is devised by dividing the amount of available
 163 * tx buffers with the size of a full ethernet frame + overhead.
 164 *
 165 * Naturally: The higher the limit, the faster the device CAN send.
 166 * However, even a slight over-commitment at the wrong time and the
 167 * hardware is doomed to send all already-queued frames at suboptimal
 168 * rates. This in turn leads to an enormous amount of unsuccessful
 169 * retries => Latency goes up, whereas the throughput goes down. CRASH!
 170 */
 171#define CARL9170_NUM_TX_LIMIT_HARD      ((AR9170_TXQ_DEPTH * 3) / 2)
 172#define CARL9170_NUM_TX_LIMIT_SOFT      (AR9170_TXQ_DEPTH)
 173
 174struct carl9170_tx_queue_stats {
 175        unsigned int count;
 176        unsigned int limit;
 177        unsigned int len;
 178};
 179
 180struct carl9170_vif {
 181        unsigned int id;
 182        struct ieee80211_vif __rcu *vif;
 183};
 184
 185struct carl9170_vif_info {
 186        struct list_head list;
 187        bool active;
 188        unsigned int id;
 189        struct sk_buff *beacon;
 190        bool enable_beacon;
 191};
 192
 193#define AR9170_NUM_RX_URBS      16
 194#define AR9170_NUM_RX_URBS_MUL  2
 195#define AR9170_NUM_TX_URBS      8
 196#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
 197
 198enum carl9170_device_features {
 199        CARL9170_WPS_BUTTON             = BIT(0),
 200        CARL9170_ONE_LED                = BIT(1),
 201};
 202
 203#ifdef CONFIG_CARL9170_LEDS
 204struct ar9170;
 205
 206struct carl9170_led {
 207        struct ar9170 *ar;
 208        struct led_classdev l;
 209        char name[32];
 210        unsigned int toggled;
 211        bool last_state;
 212        bool registered;
 213};
 214#endif /* CONFIG_CARL9170_LEDS */
 215
 216enum carl9170_restart_reasons {
 217        CARL9170_RR_NO_REASON = 0,
 218        CARL9170_RR_FATAL_FIRMWARE_ERROR,
 219        CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
 220        CARL9170_RR_WATCHDOG,
 221        CARL9170_RR_STUCK_TX,
 222        CARL9170_RR_UNRESPONSIVE_DEVICE,
 223        CARL9170_RR_COMMAND_TIMEOUT,
 224        CARL9170_RR_TOO_MANY_PHY_ERRORS,
 225        CARL9170_RR_LOST_RSP,
 226        CARL9170_RR_INVALID_RSP,
 227        CARL9170_RR_USER_REQUEST,
 228
 229        __CARL9170_RR_LAST,
 230};
 231
 232enum carl9170_erp_modes {
 233        CARL9170_ERP_INVALID,
 234        CARL9170_ERP_AUTO,
 235        CARL9170_ERP_MAC80211,
 236        CARL9170_ERP_OFF,
 237        CARL9170_ERP_CTS,
 238        CARL9170_ERP_RTS,
 239        __CARL9170_ERP_NUM,
 240};
 241
 242struct ar9170 {
 243        struct ath_common common;
 244        struct ieee80211_hw *hw;
 245        struct mutex mutex;
 246        enum carl9170_device_state state;
 247        spinlock_t state_lock;
 248        enum carl9170_restart_reasons last_reason;
 249        bool registered;
 250
 251        /* USB */
 252        struct usb_device *udev;
 253        struct usb_interface *intf;
 254        struct usb_anchor rx_anch;
 255        struct usb_anchor rx_work;
 256        struct usb_anchor rx_pool;
 257        struct usb_anchor tx_wait;
 258        struct usb_anchor tx_anch;
 259        struct usb_anchor tx_cmd;
 260        struct usb_anchor tx_err;
 261        struct tasklet_struct usb_tasklet;
 262        atomic_t tx_cmd_urbs;
 263        atomic_t tx_anch_urbs;
 264        atomic_t rx_anch_urbs;
 265        atomic_t rx_work_urbs;
 266        atomic_t rx_pool_urbs;
 267        kernel_ulong_t features;
 268
 269        /* firmware settings */
 270        struct completion fw_load_wait;
 271        struct completion fw_boot_wait;
 272        struct {
 273                const struct carl9170fw_desc_head *desc;
 274                const struct firmware *fw;
 275                unsigned int offset;
 276                unsigned int address;
 277                unsigned int cmd_bufs;
 278                unsigned int api_version;
 279                unsigned int vif_num;
 280                unsigned int err_counter;
 281                unsigned int bug_counter;
 282                u32 beacon_addr;
 283                unsigned int beacon_max_len;
 284                bool rx_stream;
 285                bool tx_stream;
 286                bool rx_filter;
 287                bool hw_counters;
 288                unsigned int mem_blocks;
 289                unsigned int mem_block_size;
 290                unsigned int rx_size;
 291                unsigned int tx_seq_table;
 292        } fw;
 293
 294        /* interface configuration combinations */
 295        struct ieee80211_iface_limit if_comb_limits[1];
 296        struct ieee80211_iface_combination if_combs[1];
 297
 298        /* reset / stuck frames/queue detection */
 299        struct work_struct restart_work;
 300        struct work_struct ping_work;
 301        unsigned int restart_counter;
 302        unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
 303        unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
 304        bool needs_full_reset;
 305        atomic_t pending_restarts;
 306
 307        /* interface mode settings */
 308        struct list_head vif_list;
 309        unsigned long vif_bitmap;
 310        unsigned int vifs;
 311        struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
 312
 313        /* beaconing */
 314        spinlock_t beacon_lock;
 315        unsigned int global_pretbtt;
 316        unsigned int global_beacon_int;
 317        struct carl9170_vif_info __rcu *beacon_iter;
 318        unsigned int beacon_enabled;
 319
 320        /* cryptographic engine */
 321        u64 usedkeys;
 322        bool rx_software_decryption;
 323        bool disable_offload;
 324
 325        /* filter settings */
 326        u64 cur_mc_hash;
 327        u32 cur_filter;
 328        unsigned int filter_state;
 329        unsigned int rx_filter_caps;
 330        bool sniffer_enabled;
 331
 332        /* MAC */
 333        enum carl9170_erp_modes erp_mode;
 334
 335        /* PHY */
 336        struct ieee80211_channel *channel;
 337        unsigned int num_channels;
 338        int noise[4];
 339        unsigned int chan_fail;
 340        unsigned int total_chan_fail;
 341        u8 heavy_clip;
 342        u8 ht_settings;
 343        struct {
 344                u64 active;     /* usec */
 345                u64 cca;        /* usec */
 346                u64 tx_time;    /* usec */
 347                u64 rx_total;
 348                u64 rx_overrun;
 349        } tally;
 350        struct delayed_work stat_work;
 351        struct survey_info *survey;
 352
 353        /* power calibration data */
 354        u8 power_5G_leg[4];
 355        u8 power_2G_cck[4];
 356        u8 power_2G_ofdm[4];
 357        u8 power_5G_ht20[8];
 358        u8 power_5G_ht40[8];
 359        u8 power_2G_ht20[8];
 360        u8 power_2G_ht40[8];
 361
 362#ifdef CONFIG_CARL9170_LEDS
 363        /* LED */
 364        struct delayed_work led_work;
 365        struct carl9170_led leds[AR9170_NUM_LEDS];
 366#endif /* CONFIG_CARL9170_LEDS */
 367
 368        /* qos queue settings */
 369        spinlock_t tx_stats_lock;
 370        struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
 371        struct ieee80211_tx_queue_params edcf[5];
 372        struct completion tx_flush;
 373
 374        /* CMD */
 375        int cmd_seq;
 376        int readlen;
 377        u8 *readbuf;
 378        spinlock_t cmd_lock;
 379        struct completion cmd_wait;
 380        union {
 381                __le32 cmd_buf[PAYLOAD_MAX + 1];
 382                struct carl9170_cmd cmd;
 383                struct carl9170_rsp rsp;
 384        };
 385
 386        /* statistics */
 387        unsigned int tx_dropped;
 388        unsigned int tx_ack_failures;
 389        unsigned int tx_fcs_errors;
 390        unsigned int rx_dropped;
 391
 392        /* EEPROM */
 393        struct ar9170_eeprom eeprom;
 394
 395        /* tx queuing */
 396        struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 397        struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 398        struct delayed_work tx_janitor;
 399        unsigned long tx_janitor_last_run;
 400        bool tx_schedule;
 401
 402        /* tx ampdu */
 403        struct work_struct ampdu_work;
 404        spinlock_t tx_ampdu_list_lock;
 405        struct carl9170_sta_tid __rcu *tx_ampdu_iter;
 406        struct list_head tx_ampdu_list;
 407        atomic_t tx_ampdu_upload;
 408        atomic_t tx_ampdu_scheduler;
 409        atomic_t tx_total_pending;
 410        atomic_t tx_total_queued;
 411        unsigned int tx_ampdu_list_len;
 412        int current_density;
 413        int current_factor;
 414        bool tx_ampdu_schedule;
 415
 416        /* internal memory management */
 417        spinlock_t mem_lock;
 418        unsigned long *mem_bitmap;
 419        atomic_t mem_free_blocks;
 420        atomic_t mem_allocs;
 421
 422        /* rxstream mpdu merge */
 423        struct ar9170_rx_head rx_plcp;
 424        bool rx_has_plcp;
 425        struct sk_buff *rx_failover;
 426        int rx_failover_missing;
 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_ba_stats {
 472        u8 ampdu_len;
 473        u8 ampdu_ack_len;
 474        bool clear;
 475        bool req;
 476};
 477
 478struct carl9170_sta_info {
 479        bool ht_sta;
 480        bool sleeping;
 481        atomic_t pending_frames;
 482        unsigned int ampdu_max_len;
 483        struct carl9170_sta_tid __rcu *agg[CARL9170_NUM_TID];
 484        struct carl9170_ba_stats stats[CARL9170_NUM_TID];
 485};
 486
 487struct carl9170_tx_info {
 488        unsigned long timeout;
 489        struct ar9170 *ar;
 490        struct kref ref;
 491};
 492
 493#define CHK_DEV_STATE(a, s)     (((struct ar9170 *)a)->state >= (s))
 494#define IS_INITIALIZED(a)       (CHK_DEV_STATE(a, CARL9170_STOPPED))
 495#define IS_ACCEPTING_CMD(a)     (CHK_DEV_STATE(a, CARL9170_IDLE))
 496#define IS_STARTED(a)           (CHK_DEV_STATE(a, CARL9170_STARTED))
 497
 498static inline void __carl9170_set_state(struct ar9170 *ar,
 499        enum carl9170_device_state newstate)
 500{
 501        ar->state = newstate;
 502}
 503
 504static inline void carl9170_set_state(struct ar9170 *ar,
 505        enum carl9170_device_state newstate)
 506{
 507        unsigned long flags;
 508
 509        spin_lock_irqsave(&ar->state_lock, flags);
 510        __carl9170_set_state(ar, newstate);
 511        spin_unlock_irqrestore(&ar->state_lock, flags);
 512}
 513
 514static inline void carl9170_set_state_when(struct ar9170 *ar,
 515        enum carl9170_device_state min, enum carl9170_device_state newstate)
 516{
 517        unsigned long flags;
 518
 519        spin_lock_irqsave(&ar->state_lock, flags);
 520        if (CHK_DEV_STATE(ar, min))
 521                __carl9170_set_state(ar, newstate);
 522        spin_unlock_irqrestore(&ar->state_lock, flags);
 523}
 524
 525/* exported interface */
 526void *carl9170_alloc(size_t priv_size);
 527int carl9170_register(struct ar9170 *ar);
 528void carl9170_unregister(struct ar9170 *ar);
 529void carl9170_free(struct ar9170 *ar);
 530void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 531void carl9170_ps_check(struct ar9170 *ar);
 532
 533/* USB back-end */
 534int carl9170_usb_open(struct ar9170 *ar);
 535void carl9170_usb_stop(struct ar9170 *ar);
 536void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 537void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 538int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 539                      u32 plen, void *payload, u32 rlen, void *resp);
 540int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 541                        const bool free_buf);
 542int carl9170_usb_restart(struct ar9170 *ar);
 543void carl9170_usb_reset(struct ar9170 *ar);
 544
 545/* MAC */
 546int carl9170_init_mac(struct ar9170 *ar);
 547int carl9170_set_qos(struct ar9170 *ar);
 548int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 549int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 550                             const u8 *mac);
 551int carl9170_set_operating_mode(struct ar9170 *ar);
 552int carl9170_set_beacon_timers(struct ar9170 *ar);
 553int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 554int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 555int carl9170_set_ampdu_settings(struct ar9170 *ar);
 556int carl9170_set_slot_time(struct ar9170 *ar);
 557int carl9170_set_mac_rates(struct ar9170 *ar);
 558int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 559int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
 560        const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
 561int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 562
 563/* RX */
 564void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 565void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 566
 567/* TX */
 568void carl9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
 569void carl9170_tx_janitor(struct work_struct *work);
 570void carl9170_tx_process_status(struct ar9170 *ar,
 571                                const struct carl9170_rsp *cmd);
 572void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 573                        const bool success);
 574void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 575void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 576void carl9170_tx_scheduler(struct ar9170 *ar);
 577void carl9170_tx_get_skb(struct sk_buff *skb);
 578int carl9170_tx_put_skb(struct sk_buff *skb);
 579int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 580
 581/* LEDs */
 582#ifdef CONFIG_CARL9170_LEDS
 583int carl9170_led_register(struct ar9170 *ar);
 584void carl9170_led_unregister(struct ar9170 *ar);
 585#endif /* CONFIG_CARL9170_LEDS */
 586int carl9170_led_init(struct ar9170 *ar);
 587int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 588
 589/* PHY / RF */
 590int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 591        enum nl80211_channel_type bw, enum carl9170_rf_init_mode rfi);
 592int carl9170_get_noisefloor(struct ar9170 *ar);
 593
 594/* FW */
 595int carl9170_parse_firmware(struct ar9170 *ar);
 596int carl9170_fw_fix_eeprom(struct ar9170 *ar);
 597
 598extern struct ieee80211_rate __carl9170_ratetable[];
 599extern int modparam_noht;
 600
 601static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
 602{
 603        return container_of(carl_vif, struct ar9170,
 604                            vif_priv[carl_vif->id]);
 605}
 606
 607static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
 608{
 609        return (void *)((struct _carl9170_tx_superframe *)
 610                skb->data)->frame_data;
 611}
 612
 613static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 614{
 615        return le16_to_cpu(hdr->seq_ctrl) >> 4;
 616}
 617
 618static inline u16 carl9170_get_seq(struct sk_buff *skb)
 619{
 620        return get_seq_h(carl9170_get_hdr(skb));
 621}
 622
 623static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
 624{
 625        return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
 626}
 627
 628static inline u16 carl9170_get_tid(struct sk_buff *skb)
 629{
 630        return get_tid_h(carl9170_get_hdr(skb));
 631}
 632
 633static inline struct ieee80211_vif *
 634carl9170_get_vif(struct carl9170_vif_info *priv)
 635{
 636        return container_of((void *)priv, struct ieee80211_vif, drv_priv);
 637}
 638
 639/* Protected by ar->mutex or RCU */
 640static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
 641{
 642        struct carl9170_vif_info *cvif;
 643
 644        list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
 645                if (cvif->active)
 646                        return carl9170_get_vif(cvif);
 647        }
 648
 649        return NULL;
 650}
 651
 652static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
 653{
 654        bool ret;
 655
 656        rcu_read_lock();
 657        ret = (carl9170_get_main_vif(ar) == vif);
 658        rcu_read_unlock();
 659        return ret;
 660}
 661
 662#endif /* __CARL9170_H */
 663