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 const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 };
  72
  73 #define CARL9170_MAX_RX_BUFFER_SIZE             8192
  74
  75 enum 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
 100 enum 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
 114 struct 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
 165 struct carl9170_tx_queue_stats {
 166         unsigned int count;
 167         unsigned int limit;
 168         unsigned int len;
 169 };
 170
 171 struct carl9170_vif {
 172         unsigned int id;
 173         struct ieee80211_vif __rcu *vif;
 174 };
 175
 176 struct 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
 189 enum carl9170_device_features {
 190         CARL9170_WPS_BUTTON             = BIT(0),
 191         CARL9170_ONE_LED                = BIT(1),
 192 };
 193
 194 #ifdef CONFIG_CARL9170_LEDS
 195 struct ar9170;
 196
 197 struct 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
 207 enum 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
 223 enum 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
 233 struct 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
 466 enum carl9170_ps_off_override_reasons {
 467         PS_OFF_VIF      = BIT(0),
 468         PS_OFF_BCN      = BIT(1),
 469 };
 470
 471 struct carl9170_bar_list_entry {
 472         struct list_head list;
 473         struct rcu_head head;
 474         struct sk_buff *skb;
 475 };
 476
 477 struct carl9170_ba_stats {
 478         u8 ampdu_len;
 479         u8 ampdu_ack_len;
 480         bool clear;
 481         bool req;
 482 };
 483
 484 struct 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
 493 struct 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
 504 static inline void __carl9170_set_state(struct ar9170 *ar,
 505         enum carl9170_device_state newstate)
 506 {
 507         ar->state = newstate;
 508 }
 509
 510 static 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
 520 static 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 */
 532 void *carl9170_alloc(size_t priv_size);
 533 int carl9170_register(struct ar9170 *ar);
 534 void carl9170_unregister(struct ar9170 *ar);
 535 void carl9170_free(struct ar9170 *ar);
 536 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 537 void carl9170_ps_check(struct ar9170 *ar);
 538
 539 /* USB back-end */
 540 int carl9170_usb_open(struct ar9170 *ar);
 541 void carl9170_usb_stop(struct ar9170 *ar);
 542 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 543 void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 544 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 545                       u32 plen, void *payload, u32 rlen, void *resp);
 546 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 547                         const bool free_buf);
 548 int carl9170_usb_restart(struct ar9170 *ar);
 549 void carl9170_usb_reset(struct ar9170 *ar);
 550
 551 /* MAC */
 552 int carl9170_init_mac(struct ar9170 *ar);
 553 int carl9170_set_qos(struct ar9170 *ar);
 554 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 555 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 556                              const u8 *mac);
 557 int carl9170_set_operating_mode(struct ar9170 *ar);
 558 int carl9170_set_beacon_timers(struct ar9170 *ar);
 559 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 560 int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 561 int carl9170_set_ampdu_settings(struct ar9170 *ar);
 562 int carl9170_set_slot_time(struct ar9170 *ar);
 563 int carl9170_set_mac_rates(struct ar9170 *ar);
 564 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 565 int 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);
 567 int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 568 int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
 569
 570 /* RX */
 571 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 572 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 573
 574 /* TX */
 575 void carl9170_op_tx(struct ieee80211_hw *hw,
 576                     struct ieee80211_tx_control *control,
 577                     struct sk_buff *skb);
 578 void carl9170_tx_janitor(struct work_struct *work);
 579 void carl9170_tx_process_status(struct ar9170 *ar,
 580                                 const struct carl9170_rsp *cmd);
 581 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 582                         const bool success);
 583 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 584 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 585 void carl9170_tx_scheduler(struct ar9170 *ar);
 586 void carl9170_tx_get_skb(struct sk_buff *skb);
 587 int carl9170_tx_put_skb(struct sk_buff *skb);
 588 int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 589
 590 /* LEDs */
 591 #ifdef CONFIG_CARL9170_LEDS
 592 int carl9170_led_register(struct ar9170 *ar);
 593 void carl9170_led_unregister(struct ar9170 *ar);
 594 #endif /* CONFIG_CARL9170_LEDS */
 595 int carl9170_led_init(struct ar9170 *ar);
 596 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 597
 598 /* PHY / RF */
 599 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 600                          enum nl80211_channel_type bw);
 601 int carl9170_get_noisefloor(struct ar9170 *ar);
 602
 603 /* FW */
 604 int carl9170_parse_firmware(struct ar9170 *ar);
 605
 606 extern struct ieee80211_rate __carl9170_ratetable[];
 607 extern int modparam_noht;
 608
 609 static 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
 615 static 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
 621 static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 622 {
 623         return le16_to_cpu(hdr->seq_ctrl) >> 4;
 624 }
 625
 626 static inline u16 carl9170_get_seq(struct sk_buff *skb)
 627 {
 628         return get_seq_h(carl9170_get_hdr(skb));
 629 }
 630
 631 static 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
 636 static inline u16 carl9170_get_tid(struct sk_buff *skb)
 637 {
 638         return get_tid_h(carl9170_get_hdr(skb));
 639 }
 640
 641 static inline struct ieee80211_vif *
 642 carl9170_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 */
 648 static 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
 660 static 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 */