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
  71 static 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
  78 enum 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
 103 enum 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
 117 struct 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
 168 struct carl9170_tx_queue_stats {
 169         unsigned int count;
 170         unsigned int limit;
 171         unsigned int len;
 172 };
 173
 174 struct carl9170_vif {
 175         unsigned int id;
 176         struct ieee80211_vif __rcu *vif;
 177 };
 178
 179 struct 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
 192 enum carl9170_device_features {
 193         CARL9170_WPS_BUTTON             = BIT(0),
 194         CARL9170_ONE_LED                = BIT(1),
 195 };
 196
 197 #ifdef CONFIG_CARL9170_LEDS
 198 struct ar9170;
 199
 200 struct 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
 210 enum 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
 226 enum 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
 236 struct 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                 bool initialized;
 462                 char name[30 + 1];
 463                 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
 464                 unsigned int cache_idx;
 465         } rng;
 466 #endif /* CONFIG_CARL9170_HWRNG */
 467 };
 468
 469 enum carl9170_ps_off_override_reasons {
 470         PS_OFF_VIF      = BIT(0),
 471         PS_OFF_BCN      = BIT(1),
 472 };
 473
 474 struct carl9170_bar_list_entry {
 475         struct list_head list;
 476         struct rcu_head head;
 477         struct sk_buff *skb;
 478 };
 479
 480 struct carl9170_ba_stats {
 481         u8 ampdu_len;
 482         u8 ampdu_ack_len;
 483         bool clear;
 484         bool req;
 485 };
 486
 487 struct carl9170_sta_info {
 488         bool ht_sta;
 489         bool sleeping;
 490         atomic_t pending_frames;
 491         unsigned int ampdu_max_len;
 492         struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
 493         struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
 494 };
 495
 496 struct carl9170_tx_info {
 497         unsigned long timeout;
 498         struct ar9170 *ar;
 499         struct kref ref;
 500 };
 501
 502 #define CHK_DEV_STATE(a, s)     (((struct ar9170 *)a)->state >= (s))
 503 #define IS_INITIALIZED(a)       (CHK_DEV_STATE(a, CARL9170_STOPPED))
 504 #define IS_ACCEPTING_CMD(a)     (CHK_DEV_STATE(a, CARL9170_IDLE))
 505 #define IS_STARTED(a)           (CHK_DEV_STATE(a, CARL9170_STARTED))
 506
 507 static inline void __carl9170_set_state(struct ar9170 *ar,
 508         enum carl9170_device_state newstate)
 509 {
 510         ar->state = newstate;
 511 }
 512
 513 static inline void carl9170_set_state(struct ar9170 *ar,
 514         enum carl9170_device_state newstate)
 515 {
 516         unsigned long flags;
 517
 518         spin_lock_irqsave(&ar->state_lock, flags);
 519         __carl9170_set_state(ar, newstate);
 520         spin_unlock_irqrestore(&ar->state_lock, flags);
 521 }
 522
 523 static inline void carl9170_set_state_when(struct ar9170 *ar,
 524         enum carl9170_device_state min, enum carl9170_device_state newstate)
 525 {
 526         unsigned long flags;
 527
 528         spin_lock_irqsave(&ar->state_lock, flags);
 529         if (CHK_DEV_STATE(ar, min))
 530                 __carl9170_set_state(ar, newstate);
 531         spin_unlock_irqrestore(&ar->state_lock, flags);
 532 }
 533
 534 /* exported interface */
 535 void *carl9170_alloc(size_t priv_size);
 536 int carl9170_register(struct ar9170 *ar);
 537 void carl9170_unregister(struct ar9170 *ar);
 538 void carl9170_free(struct ar9170 *ar);
 539 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 540 void carl9170_ps_check(struct ar9170 *ar);
 541
 542 /* USB back-end */
 543 int carl9170_usb_open(struct ar9170 *ar);
 544 void carl9170_usb_stop(struct ar9170 *ar);
 545 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 546 void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 547 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 548                       u32 plen, void *payload, u32 rlen, void *resp);
 549 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 550                         const bool free_buf);
 551 int carl9170_usb_restart(struct ar9170 *ar);
 552 void carl9170_usb_reset(struct ar9170 *ar);
 553
 554 /* MAC */
 555 int carl9170_init_mac(struct ar9170 *ar);
 556 int carl9170_set_qos(struct ar9170 *ar);
 557 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 558 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 559                              const u8 *mac);
 560 int carl9170_set_operating_mode(struct ar9170 *ar);
 561 int carl9170_set_beacon_timers(struct ar9170 *ar);
 562 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 563 int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 564 int carl9170_set_ampdu_settings(struct ar9170 *ar);
 565 int carl9170_set_slot_time(struct ar9170 *ar);
 566 int carl9170_set_mac_rates(struct ar9170 *ar);
 567 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 568 int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
 569         const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
 570 int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 571 int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
 572
 573 /* RX */
 574 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 575 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 576
 577 /* TX */
 578 void carl9170_op_tx(struct ieee80211_hw *hw,
 579                     struct ieee80211_tx_control *control,
 580                     struct sk_buff *skb);
 581 void carl9170_tx_janitor(struct work_struct *work);
 582 void carl9170_tx_process_status(struct ar9170 *ar,
 583                                 const struct carl9170_rsp *cmd);
 584 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 585                         const bool success);
 586 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 587 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 588 void carl9170_tx_scheduler(struct ar9170 *ar);
 589 void carl9170_tx_get_skb(struct sk_buff *skb);
 590 int carl9170_tx_put_skb(struct sk_buff *skb);
 591 int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 592
 593 /* LEDs */
 594 #ifdef CONFIG_CARL9170_LEDS
 595 int carl9170_led_register(struct ar9170 *ar);
 596 void carl9170_led_unregister(struct ar9170 *ar);
 597 #endif /* CONFIG_CARL9170_LEDS */
 598 int carl9170_led_init(struct ar9170 *ar);
 599 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 600
 601 /* PHY / RF */
 602 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 603                          enum nl80211_channel_type bw);
 604 int carl9170_get_noisefloor(struct ar9170 *ar);
 605
 606 /* FW */
 607 int carl9170_parse_firmware(struct ar9170 *ar);
 608
 609 extern struct ieee80211_rate __carl9170_ratetable[];
 610 extern int modparam_noht;
 611
 612 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
 613 {
 614         return container_of(carl_vif, struct ar9170,
 615                             vif_priv[carl_vif->id]);
 616 }
 617
 618 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
 619 {
 620         return (void *)((struct _carl9170_tx_superframe *)
 621                 skb->data)->frame_data;
 622 }
 623
 624 static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 625 {
 626         return le16_to_cpu(hdr->seq_ctrl) >> 4;
 627 }
 628
 629 static inline u16 carl9170_get_seq(struct sk_buff *skb)
 630 {
 631         return get_seq_h(carl9170_get_hdr(skb));
 632 }
 633
 634 static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
 635 {
 636         return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
 637 }
 638
 639 static inline u16 carl9170_get_tid(struct sk_buff *skb)
 640 {
 641         return get_tid_h(carl9170_get_hdr(skb));
 642 }
 643
 644 static inline struct ieee80211_vif *
 645 carl9170_get_vif(struct carl9170_vif_info *priv)
 646 {
 647         return container_of((void *)priv, struct ieee80211_vif, drv_priv);
 648 }
 649
 650 /* Protected by ar->mutex or RCU */
 651 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
 652 {
 653         struct carl9170_vif_info *cvif;
 654
 655         list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
 656                 if (cvif->active)
 657                         return carl9170_get_vif(cvif);
 658         }
 659
 660         return NULL;
 661 }
 662
 663 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
 664 {
 665         bool ret;
 666
 667         rcu_read_lock();
 668         ret = (carl9170_get_main_vif(ar) == vif);
 669         rcu_read_unlock();
 670         return ret;
 671 }
 672
 673 #endif /* __CARL9170_H */