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 inline u8 ar9170_qmap(u8 idx)
  72{
  73        return 3 - idx; /* { 3, 2, 1, 0 } */
  74}
  75
  76#define CARL9170_MAX_RX_BUFFER_SIZE             8192
  77
  78enum carl9170_device_state {
  79        CARL9170_UNKNOWN_STATE,
  80        CARL9170_STOPPED,
  81        CARL9170_IDLE,
  82        CARL9170_STARTED,
  83};
  84
  85#define WME_BA_BMP_SIZE                 64
  86#define CARL9170_TX_USER_RATE_TRIES     3
  87
  88#define TID_TO_WME_AC(_tid)                             \
  89        ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE :   \
  90         (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK :   \
  91         (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI :   \
  92         IEEE80211_AC_VO)
  93
  94#define SEQ_DIFF(_start, _seq) \
  95        (((_start) - (_seq)) & 0x0fff)
  96#define SEQ_PREV(_seq) \
  97        (((_seq) - 1) & 0x0fff)
  98#define SEQ_NEXT(_seq) \
  99        (((_seq) + 1) & 0x0fff)
 100#define BAW_WITHIN(_start, _bawsz, _seqno) \
 101        ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
 102
 103enum carl9170_tid_state {
 104        CARL9170_TID_STATE_INVALID,
 105        CARL9170_TID_STATE_KILLED,
 106        CARL9170_TID_STATE_SHUTDOWN,
 107        CARL9170_TID_STATE_SUSPEND,
 108        CARL9170_TID_STATE_PROGRESS,
 109        CARL9170_TID_STATE_IDLE,
 110        CARL9170_TID_STATE_XMIT,
 111};
 112
 113#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
 114#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
 115#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
 116
 117struct carl9170_sta_tid {
 118        /* must be the first entry! */
 119        struct list_head list;
 120
 121        /* temporary list for RCU unlink procedure */
 122        struct list_head tmp_list;
 123
 124        /* lock for the following data structures */
 125        spinlock_t lock;
 126
 127        unsigned int counter;
 128        enum carl9170_tid_state state;
 129        u8 tid;         /* TID number ( 0 - 15 ) */
 130        u16 max;        /* max. AMPDU size */
 131
 132        u16 snx;        /* awaiting _next_ frame */
 133        u16 hsn;        /* highest _queued_ sequence */
 134        u16 bsn;        /* base of the tx/agg bitmap */
 135        unsigned long bitmap[CARL9170_BAW_SIZE];
 136
 137        /* Preaggregation reorder queue */
 138        struct sk_buff_head queue;
 139
 140        struct ieee80211_sta *sta;
 141        struct ieee80211_vif *vif;
 142};
 143
 144#define CARL9170_QUEUE_TIMEOUT          256
 145#define CARL9170_BUMP_QUEUE             1000
 146#define CARL9170_TX_TIMEOUT             2500
 147#define CARL9170_JANITOR_DELAY          128
 148#define CARL9170_QUEUE_STUCK_TIMEOUT    5500
 149#define CARL9170_STAT_WORK              30000
 150
 151#define CARL9170_NUM_TX_AGG_MAX         30
 152
 153/*
 154 * Tradeoff between stability/latency and speed.
 155 *
 156 * AR9170_TXQ_DEPTH is devised by dividing the amount of available
 157 * tx buffers with the size of a full ethernet frame + overhead.
 158 *
 159 * Naturally: The higher the limit, the faster the device CAN send.
 160 * However, even a slight over-commitment at the wrong time and the
 161 * hardware is doomed to send all already-queued frames at suboptimal
 162 * rates. This in turn leads to an enormous amount of unsuccessful
 163 * retries => Latency goes up, whereas the throughput goes down. CRASH!
 164 */
 165#define CARL9170_NUM_TX_LIMIT_HARD      ((AR9170_TXQ_DEPTH * 3) / 2)
 166#define CARL9170_NUM_TX_LIMIT_SOFT      (AR9170_TXQ_DEPTH)
 167
 168struct carl9170_tx_queue_stats {
 169        unsigned int count;
 170        unsigned int limit;
 171        unsigned int len;
 172};
 173
 174struct carl9170_vif {
 175        unsigned int id;
 176        struct ieee80211_vif __rcu *vif;
 177};
 178
 179struct carl9170_vif_info {
 180        struct list_head list;
 181        bool active;
 182        unsigned int id;
 183        struct sk_buff *beacon;
 184        bool enable_beacon;
 185};
 186
 187#define AR9170_NUM_RX_URBS      16
 188#define AR9170_NUM_RX_URBS_MUL  2
 189#define AR9170_NUM_TX_URBS      8
 190#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
 191
 192enum carl9170_device_features {
 193        CARL9170_WPS_BUTTON             = BIT(0),
 194        CARL9170_ONE_LED                = BIT(1),
 195};
 196
 197#ifdef CONFIG_CARL9170_LEDS
 198struct ar9170;
 199
 200struct carl9170_led {
 201        struct ar9170 *ar;
 202        struct led_classdev l;
 203        char name[32];
 204        unsigned int toggled;
 205        bool last_state;
 206        bool registered;
 207};
 208#endif /* CONFIG_CARL9170_LEDS */
 209
 210enum carl9170_restart_reasons {
 211        CARL9170_RR_NO_REASON = 0,
 212        CARL9170_RR_FATAL_FIRMWARE_ERROR,
 213        CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
 214        CARL9170_RR_WATCHDOG,
 215        CARL9170_RR_STUCK_TX,
 216        CARL9170_RR_UNRESPONSIVE_DEVICE,
 217        CARL9170_RR_COMMAND_TIMEOUT,
 218        CARL9170_RR_TOO_MANY_PHY_ERRORS,
 219        CARL9170_RR_LOST_RSP,
 220        CARL9170_RR_INVALID_RSP,
 221        CARL9170_RR_USER_REQUEST,
 222
 223        __CARL9170_RR_LAST,
 224};
 225
 226enum carl9170_erp_modes {
 227        CARL9170_ERP_INVALID,
 228        CARL9170_ERP_AUTO,
 229        CARL9170_ERP_MAC80211,
 230        CARL9170_ERP_OFF,
 231        CARL9170_ERP_CTS,
 232        CARL9170_ERP_RTS,
 233        __CARL9170_ERP_NUM,
 234};
 235
 236struct ar9170 {
 237        struct ath_common common;
 238        struct ieee80211_hw *hw;
 239        struct mutex mutex;
 240        enum carl9170_device_state state;
 241        spinlock_t state_lock;
 242        enum carl9170_restart_reasons last_reason;
 243        bool registered;
 244
 245        /* USB */
 246        struct usb_device *udev;
 247        struct usb_interface *intf;
 248        struct usb_anchor rx_anch;
 249        struct usb_anchor rx_work;
 250        struct usb_anchor rx_pool;
 251        struct usb_anchor tx_wait;
 252        struct usb_anchor tx_anch;
 253        struct usb_anchor tx_cmd;
 254        struct usb_anchor tx_err;
 255        struct tasklet_struct usb_tasklet;
 256        atomic_t tx_cmd_urbs;
 257        atomic_t tx_anch_urbs;
 258        atomic_t rx_anch_urbs;
 259        atomic_t rx_work_urbs;
 260        atomic_t rx_pool_urbs;
 261        kernel_ulong_t features;
 262        bool usb_ep_cmd_is_bulk;
 263
 264        /* firmware settings */
 265        struct completion fw_load_wait;
 266        struct completion fw_boot_wait;
 267        struct {
 268                const struct carl9170fw_desc_head *desc;
 269                const struct firmware *fw;
 270                unsigned int offset;
 271                unsigned int address;
 272                unsigned int cmd_bufs;
 273                unsigned int api_version;
 274                unsigned int vif_num;
 275                unsigned int err_counter;
 276                unsigned int bug_counter;
 277                u32 beacon_addr;
 278                unsigned int beacon_max_len;
 279                bool rx_stream;
 280                bool tx_stream;
 281                bool rx_filter;
 282                bool hw_counters;
 283                unsigned int mem_blocks;
 284                unsigned int mem_block_size;
 285                unsigned int rx_size;
 286                unsigned int tx_seq_table;
 287                bool ba_filter;
 288                bool disable_offload_fw;
 289        } fw;
 290
 291        /* interface configuration combinations */
 292        struct ieee80211_iface_limit if_comb_limits[1];
 293        struct ieee80211_iface_combination if_combs[1];
 294
 295        /* reset / stuck frames/queue detection */
 296        struct work_struct restart_work;
 297        struct work_struct ping_work;
 298        unsigned int restart_counter;
 299        unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
 300        unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
 301        bool needs_full_reset;
 302        bool force_usb_reset;
 303        atomic_t pending_restarts;
 304
 305        /* interface mode settings */
 306        struct list_head vif_list;
 307        unsigned long vif_bitmap;
 308        unsigned int vifs;
 309        struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
 310
 311        /* beaconing */
 312        spinlock_t beacon_lock;
 313        unsigned int global_pretbtt;
 314        unsigned int global_beacon_int;
 315        struct carl9170_vif_info __rcu *beacon_iter;
 316        unsigned int beacon_enabled;
 317
 318        /* cryptographic engine */
 319        u64 usedkeys;
 320        bool rx_software_decryption;
 321        bool disable_offload;
 322
 323        /* filter settings */
 324        u64 cur_mc_hash;
 325        u32 cur_filter;
 326        unsigned int filter_state;
 327        unsigned int rx_filter_caps;
 328        bool sniffer_enabled;
 329
 330        /* MAC */
 331        enum carl9170_erp_modes erp_mode;
 332
 333        /* PHY */
 334        struct ieee80211_channel *channel;
 335        unsigned int num_channels;
 336        int noise[4];
 337        unsigned int chan_fail;
 338        unsigned int total_chan_fail;
 339        u8 heavy_clip;
 340        u8 ht_settings;
 341        struct {
 342                u64 active;     /* usec */
 343                u64 cca;        /* usec */
 344                u64 tx_time;    /* usec */
 345                u64 rx_total;
 346                u64 rx_overrun;
 347        } tally;
 348        struct delayed_work stat_work;
 349        struct survey_info *survey;
 350
 351        /* power calibration data */
 352        u8 power_5G_leg[4];
 353        u8 power_2G_cck[4];
 354        u8 power_2G_ofdm[4];
 355        u8 power_5G_ht20[8];
 356        u8 power_5G_ht40[8];
 357        u8 power_2G_ht20[8];
 358        u8 power_2G_ht40[8];
 359
 360#ifdef CONFIG_CARL9170_LEDS
 361        /* LED */
 362        struct delayed_work led_work;
 363        struct carl9170_led leds[AR9170_NUM_LEDS];
 364#endif /* CONFIG_CARL9170_LEDS */
 365
 366        /* qos queue settings */
 367        spinlock_t tx_stats_lock;
 368        struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
 369        struct ieee80211_tx_queue_params edcf[5];
 370        struct completion tx_flush;
 371
 372        /* CMD */
 373        int cmd_seq;
 374        int readlen;
 375        u8 *readbuf;
 376        spinlock_t cmd_lock;
 377        struct completion cmd_wait;
 378        union {
 379                __le32 cmd_buf[PAYLOAD_MAX + 1];
 380                struct carl9170_cmd cmd;
 381                struct carl9170_rsp rsp;
 382        };
 383
 384        /* statistics */
 385        unsigned int tx_dropped;
 386        unsigned int tx_ack_failures;
 387        unsigned int tx_fcs_errors;
 388        unsigned int rx_dropped;
 389
 390        /* EEPROM */
 391        struct ar9170_eeprom eeprom;
 392
 393        /* tx queuing */
 394        struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 395        struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 396        struct delayed_work tx_janitor;
 397        unsigned long tx_janitor_last_run;
 398        bool tx_schedule;
 399
 400        /* tx ampdu */
 401        struct work_struct ampdu_work;
 402        spinlock_t tx_ampdu_list_lock;
 403        struct carl9170_sta_tid __rcu *tx_ampdu_iter;
 404        struct list_head tx_ampdu_list;
 405        atomic_t tx_ampdu_upload;
 406        atomic_t tx_ampdu_scheduler;
 407        atomic_t tx_total_pending;
 408        atomic_t tx_total_queued;
 409        unsigned int tx_ampdu_list_len;
 410        int current_density;
 411        int current_factor;
 412        bool tx_ampdu_schedule;
 413
 414        /* internal memory management */
 415        spinlock_t mem_lock;
 416        unsigned long *mem_bitmap;
 417        atomic_t mem_free_blocks;
 418        atomic_t mem_allocs;
 419
 420        /* rxstream mpdu merge */
 421        struct ar9170_rx_head rx_plcp;
 422        bool rx_has_plcp;
 423        struct sk_buff *rx_failover;
 424        int rx_failover_missing;
 425        u32 ampdu_ref;
 426
 427        /* FIFO for collecting outstanding BlockAckRequest */
 428        struct list_head bar_list[__AR9170_NUM_TXQ];
 429        spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
 430
 431#ifdef CONFIG_CARL9170_WPC
 432        struct {
 433                bool pbc_state;
 434                struct input_dev *pbc;
 435                char name[32];
 436                char phys[32];
 437        } wps;
 438#endif /* CONFIG_CARL9170_WPC */
 439
 440#ifdef CONFIG_CARL9170_DEBUGFS
 441        struct carl9170_debug debug;
 442        struct dentry *debug_dir;
 443#endif /* CONFIG_CARL9170_DEBUGFS */
 444
 445        /* PSM */
 446        struct work_struct ps_work;
 447        struct {
 448                unsigned int dtim_counter;
 449                unsigned long last_beacon;
 450                unsigned long last_action;
 451                unsigned long last_slept;
 452                unsigned int sleep_ms;
 453                unsigned int off_override;
 454                bool state;
 455        } ps;
 456
 457#ifdef CONFIG_CARL9170_HWRNG
 458# define CARL9170_HWRNG_CACHE_SIZE      CARL9170_MAX_CMD_PAYLOAD_LEN
 459        struct {
 460                struct hwrng rng;
 461                char name[30 + 1];
 462                u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
 463                unsigned int cache_idx;
 464        } rng;
 465#endif /* CONFIG_CARL9170_HWRNG */
 466};
 467
 468enum carl9170_ps_off_override_reasons {
 469        PS_OFF_VIF      = BIT(0),
 470        PS_OFF_BCN      = BIT(1),
 471};
 472
 473struct carl9170_bar_list_entry {
 474        struct list_head list;
 475        struct rcu_head head;
 476        struct sk_buff *skb;
 477};
 478
 479struct carl9170_ba_stats {
 480        u8 ampdu_len;
 481        u8 ampdu_ack_len;
 482        bool clear;
 483        bool req;
 484};
 485
 486struct carl9170_sta_info {
 487        bool ht_sta;
 488        bool sleeping;
 489        atomic_t pending_frames;
 490        unsigned int ampdu_max_len;
 491        struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
 492        struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
 493};
 494
 495struct carl9170_tx_info {
 496        unsigned long timeout;
 497        struct ar9170 *ar;
 498        struct kref ref;
 499};
 500
 501#define CHK_DEV_STATE(a, s)     (((struct ar9170 *)a)->state >= (s))
 502#define IS_INITIALIZED(a)       (CHK_DEV_STATE(a, CARL9170_STOPPED))
 503#define IS_ACCEPTING_CMD(a)     (CHK_DEV_STATE(a, CARL9170_IDLE))
 504#define IS_STARTED(a)           (CHK_DEV_STATE(a, CARL9170_STARTED))
 505
 506static inline void __carl9170_set_state(struct ar9170 *ar,
 507        enum carl9170_device_state newstate)
 508{
 509        ar->state = newstate;
 510}
 511
 512static inline void carl9170_set_state(struct ar9170 *ar,
 513        enum carl9170_device_state newstate)
 514{
 515        unsigned long flags;
 516
 517        spin_lock_irqsave(&ar->state_lock, flags);
 518        __carl9170_set_state(ar, newstate);
 519        spin_unlock_irqrestore(&ar->state_lock, flags);
 520}
 521
 522static inline void carl9170_set_state_when(struct ar9170 *ar,
 523        enum carl9170_device_state min, enum carl9170_device_state newstate)
 524{
 525        unsigned long flags;
 526
 527        spin_lock_irqsave(&ar->state_lock, flags);
 528        if (CHK_DEV_STATE(ar, min))
 529                __carl9170_set_state(ar, newstate);
 530        spin_unlock_irqrestore(&ar->state_lock, flags);
 531}
 532
 533/* exported interface */
 534void *carl9170_alloc(size_t priv_size);
 535int carl9170_register(struct ar9170 *ar);
 536void carl9170_unregister(struct ar9170 *ar);
 537void carl9170_free(struct ar9170 *ar);
 538void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 539void carl9170_ps_check(struct ar9170 *ar);
 540
 541/* USB back-end */
 542int carl9170_usb_open(struct ar9170 *ar);
 543void carl9170_usb_stop(struct ar9170 *ar);
 544void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 545void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 546int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 547                      u32 plen, void *payload, u32 rlen, void *resp);
 548int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 549                        const bool free_buf);
 550int carl9170_usb_restart(struct ar9170 *ar);
 551void carl9170_usb_reset(struct ar9170 *ar);
 552
 553/* MAC */
 554int carl9170_init_mac(struct ar9170 *ar);
 555int carl9170_set_qos(struct ar9170 *ar);
 556int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 557int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 558                             const u8 *mac);
 559int carl9170_set_operating_mode(struct ar9170 *ar);
 560int carl9170_set_beacon_timers(struct ar9170 *ar);
 561int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 562int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 563int carl9170_set_ampdu_settings(struct ar9170 *ar);
 564int carl9170_set_slot_time(struct ar9170 *ar);
 565int carl9170_set_mac_rates(struct ar9170 *ar);
 566int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 567int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
 568        const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
 569int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 570int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
 571
 572/* RX */
 573void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 574void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 575
 576/* TX */
 577void carl9170_op_tx(struct ieee80211_hw *hw,
 578                    struct ieee80211_tx_control *control,
 579                    struct sk_buff *skb);
 580void carl9170_tx_janitor(struct work_struct *work);
 581void carl9170_tx_process_status(struct ar9170 *ar,
 582                                const struct carl9170_rsp *cmd);
 583void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 584                        const bool success);
 585void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 586void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 587void carl9170_tx_scheduler(struct ar9170 *ar);
 588void carl9170_tx_get_skb(struct sk_buff *skb);
 589int carl9170_tx_put_skb(struct sk_buff *skb);
 590int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 591
 592/* LEDs */
 593#ifdef CONFIG_CARL9170_LEDS
 594int carl9170_led_register(struct ar9170 *ar);
 595void carl9170_led_unregister(struct ar9170 *ar);
 596#endif /* CONFIG_CARL9170_LEDS */
 597int carl9170_led_init(struct ar9170 *ar);
 598int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 599
 600/* PHY / RF */
 601int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 602                         enum nl80211_channel_type bw);
 603int carl9170_get_noisefloor(struct ar9170 *ar);
 604
 605/* FW */
 606int carl9170_parse_firmware(struct ar9170 *ar);
 607
 608extern struct ieee80211_rate __carl9170_ratetable[];
 609extern int modparam_noht;
 610
 611static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
 612{
 613        return container_of(carl_vif, struct ar9170,
 614                            vif_priv[carl_vif->id]);
 615}
 616
 617static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
 618{
 619        return (void *)((struct _carl9170_tx_superframe *)
 620                skb->data)->frame_data;
 621}
 622
 623static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 624{
 625        return le16_to_cpu(hdr->seq_ctrl) >> 4;
 626}
 627
 628static inline u16 carl9170_get_seq(struct sk_buff *skb)
 629{
 630        return get_seq_h(carl9170_get_hdr(skb));
 631}
 632
 633static inline u16 carl9170_get_tid(struct sk_buff *skb)
 634{
 635        return ieee80211_get_tid(carl9170_get_hdr(skb));
 636}
 637
 638static inline struct ieee80211_vif *
 639carl9170_get_vif(struct carl9170_vif_info *priv)
 640{
 641        return container_of((void *)priv, struct ieee80211_vif, drv_priv);
 642}
 643
 644/* Protected by ar->mutex or RCU */
 645static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
 646{
 647        struct carl9170_vif_info *cvif;
 648
 649        list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
 650                if (cvif->active)
 651                        return carl9170_get_vif(cvif);
 652        }
 653
 654        return NULL;
 655}
 656
 657static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
 658{
 659        bool ret;
 660
 661        rcu_read_lock();
 662        ret = (carl9170_get_main_vif(ar) == vif);
 663        rcu_read_unlock();
 664        return ret;
 665}
 666
 667#endif /* __CARL9170_H */
 668