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
 260         /* firmware settings */
 261         struct completion fw_load_wait;
 262         struct completion fw_boot_wait;
 263         struct {
 264                 const struct carl9170fw_desc_head *desc;
 265                 const struct firmware *fw;
 266                 unsigned int offset;
 267                 unsigned int address;
 268                 unsigned int cmd_bufs;
 269                 unsigned int api_version;
 270                 unsigned int vif_num;
 271                 unsigned int err_counter;
 272                 unsigned int bug_counter;
 273                 u32 beacon_addr;
 274                 unsigned int beacon_max_len;
 275                 bool rx_stream;
 276                 bool tx_stream;
 277                 bool rx_filter;
 278                 bool hw_counters;
 279                 unsigned int mem_blocks;
 280                 unsigned int mem_block_size;
 281                 unsigned int rx_size;
 282                 unsigned int tx_seq_table;
 283                 bool ba_filter;
 284                 bool disable_offload_fw;
 285         } fw;
 286
 287         /* interface configuration combinations */
 288         struct ieee80211_iface_limit if_comb_limits[1];
 289         struct ieee80211_iface_combination if_combs[1];
 290
 291         /* reset / stuck frames/queue detection */
 292         struct work_struct restart_work;
 293         struct work_struct ping_work;
 294         unsigned int restart_counter;
 295         unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
 296         unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
 297         bool needs_full_reset;
 298         bool force_usb_reset;
 299         atomic_t pending_restarts;
 300
 301         /* interface mode settings */
 302         struct list_head vif_list;
 303         unsigned long vif_bitmap;
 304         unsigned int vifs;
 305         struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
 306
 307         /* beaconing */
 308         spinlock_t beacon_lock;
 309         unsigned int global_pretbtt;
 310         unsigned int global_beacon_int;
 311         struct carl9170_vif_info __rcu *beacon_iter;
 312         unsigned int beacon_enabled;
 313
 314         /* cryptographic engine */
 315         u64 usedkeys;
 316         bool rx_software_decryption;
 317         bool disable_offload;
 318
 319         /* filter settings */
 320         u64 cur_mc_hash;
 321         u32 cur_filter;
 322         unsigned int filter_state;
 323         unsigned int rx_filter_caps;
 324         bool sniffer_enabled;
 325
 326         /* MAC */
 327         enum carl9170_erp_modes erp_mode;
 328
 329         /* PHY */
 330         struct ieee80211_channel *channel;
 331         unsigned int num_channels;
 332         int noise[4];
 333         unsigned int chan_fail;
 334         unsigned int total_chan_fail;
 335         u8 heavy_clip;
 336         u8 ht_settings;
 337         struct {
 338                 u64 active;     /* usec */
 339                 u64 cca;        /* usec */
 340                 u64 tx_time;    /* usec */
 341                 u64 rx_total;
 342                 u64 rx_overrun;
 343         } tally;
 344         struct delayed_work stat_work;
 345         struct survey_info *survey;
 346
 347         /* power calibration data */
 348         u8 power_5G_leg[4];
 349         u8 power_2G_cck[4];
 350         u8 power_2G_ofdm[4];
 351         u8 power_5G_ht20[8];
 352         u8 power_5G_ht40[8];
 353         u8 power_2G_ht20[8];
 354         u8 power_2G_ht40[8];
 355
 356 #ifdef CONFIG_CARL9170_LEDS
 357         /* LED */
 358         struct delayed_work led_work;
 359         struct carl9170_led leds[AR9170_NUM_LEDS];
 360 #endif /* CONFIG_CARL9170_LEDS */
 361
 362         /* qos queue settings */
 363         spinlock_t tx_stats_lock;
 364         struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
 365         struct ieee80211_tx_queue_params edcf[5];
 366         struct completion tx_flush;
 367
 368         /* CMD */
 369         int cmd_seq;
 370         int readlen;
 371         u8 *readbuf;
 372         spinlock_t cmd_lock;
 373         struct completion cmd_wait;
 374         union {
 375                 __le32 cmd_buf[PAYLOAD_MAX + 1];
 376                 struct carl9170_cmd cmd;
 377                 struct carl9170_rsp rsp;
 378         };
 379
 380         /* statistics */
 381         unsigned int tx_dropped;
 382         unsigned int tx_ack_failures;
 383         unsigned int tx_fcs_errors;
 384         unsigned int rx_dropped;
 385
 386         /* EEPROM */
 387         struct ar9170_eeprom eeprom;
 388
 389         /* tx queuing */
 390         struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 391         struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 392         struct delayed_work tx_janitor;
 393         unsigned long tx_janitor_last_run;
 394         bool tx_schedule;
 395
 396         /* tx ampdu */
 397         struct work_struct ampdu_work;
 398         spinlock_t tx_ampdu_list_lock;
 399         struct carl9170_sta_tid __rcu *tx_ampdu_iter;
 400         struct list_head tx_ampdu_list;
 401         atomic_t tx_ampdu_upload;
 402         atomic_t tx_ampdu_scheduler;
 403         atomic_t tx_total_pending;
 404         atomic_t tx_total_queued;
 405         unsigned int tx_ampdu_list_len;
 406         int current_density;
 407         int current_factor;
 408         bool tx_ampdu_schedule;
 409
 410         /* internal memory management */
 411         spinlock_t mem_lock;
 412         unsigned long *mem_bitmap;
 413         atomic_t mem_free_blocks;
 414         atomic_t mem_allocs;
 415
 416         /* rxstream mpdu merge */
 417         struct ar9170_rx_head rx_plcp;
 418         bool rx_has_plcp;
 419         struct sk_buff *rx_failover;
 420         int rx_failover_missing;
 421         u32 ampdu_ref;
 422
 423         /* FIFO for collecting outstanding BlockAckRequest */
 424         struct list_head bar_list[__AR9170_NUM_TXQ];
 425         spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
 426
 427 #ifdef CONFIG_CARL9170_WPC
 428         struct {
 429                 bool pbc_state;
 430                 struct input_dev *pbc;
 431                 char name[32];
 432                 char phys[32];
 433         } wps;
 434 #endif /* CONFIG_CARL9170_WPC */
 435
 436 #ifdef CONFIG_CARL9170_DEBUGFS
 437         struct carl9170_debug debug;
 438         struct dentry *debug_dir;
 439 #endif /* CONFIG_CARL9170_DEBUGFS */
 440
 441         /* PSM */
 442         struct work_struct ps_work;
 443         struct {
 444                 unsigned int dtim_counter;
 445                 unsigned long last_beacon;
 446                 unsigned long last_action;
 447                 unsigned long last_slept;
 448                 unsigned int sleep_ms;
 449                 unsigned int off_override;
 450                 bool state;
 451         } ps;
 452
 453 #ifdef CONFIG_CARL9170_HWRNG
 454 # define CARL9170_HWRNG_CACHE_SIZE      CARL9170_MAX_CMD_PAYLOAD_LEN
 455         struct {
 456                 struct hwrng rng;
 457                 bool initialized;
 458                 char name[30 + 1];
 459                 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
 460                 unsigned int cache_idx;
 461         } rng;
 462 #endif /* CONFIG_CARL9170_HWRNG */
 463 };
 464
 465 enum carl9170_ps_off_override_reasons {
 466         PS_OFF_VIF      = BIT(0),
 467         PS_OFF_BCN      = BIT(1),
 468 };
 469
 470 struct carl9170_bar_list_entry {
 471         struct list_head list;
 472         struct rcu_head head;
 473         struct sk_buff *skb;
 474 };
 475
 476 struct carl9170_ba_stats {
 477         u8 ampdu_len;
 478         u8 ampdu_ack_len;
 479         bool clear;
 480         bool req;
 481 };
 482
 483 struct carl9170_sta_info {
 484         bool ht_sta;
 485         bool sleeping;
 486         atomic_t pending_frames;
 487         unsigned int ampdu_max_len;
 488         struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
 489         struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
 490 };
 491
 492 struct carl9170_tx_info {
 493         unsigned long timeout;
 494         struct ar9170 *ar;
 495         struct kref ref;
 496 };
 497
 498 #define CHK_DEV_STATE(a, s)     (((struct ar9170 *)a)->state >= (s))
 499 #define IS_INITIALIZED(a)       (CHK_DEV_STATE(a, CARL9170_STOPPED))
 500 #define IS_ACCEPTING_CMD(a)     (CHK_DEV_STATE(a, CARL9170_IDLE))
 501 #define IS_STARTED(a)           (CHK_DEV_STATE(a, CARL9170_STARTED))
 502
 503 static inline void __carl9170_set_state(struct ar9170 *ar,
 504         enum carl9170_device_state newstate)
 505 {
 506         ar->state = newstate;
 507 }
 508
 509 static inline void carl9170_set_state(struct ar9170 *ar,
 510         enum carl9170_device_state newstate)
 511 {
 512         unsigned long flags;
 513
 514         spin_lock_irqsave(&ar->state_lock, flags);
 515         __carl9170_set_state(ar, newstate);
 516         spin_unlock_irqrestore(&ar->state_lock, flags);
 517 }
 518
 519 static inline void carl9170_set_state_when(struct ar9170 *ar,
 520         enum carl9170_device_state min, enum carl9170_device_state newstate)
 521 {
 522         unsigned long flags;
 523
 524         spin_lock_irqsave(&ar->state_lock, flags);
 525         if (CHK_DEV_STATE(ar, min))
 526                 __carl9170_set_state(ar, newstate);
 527         spin_unlock_irqrestore(&ar->state_lock, flags);
 528 }
 529
 530 /* exported interface */
 531 void *carl9170_alloc(size_t priv_size);
 532 int carl9170_register(struct ar9170 *ar);
 533 void carl9170_unregister(struct ar9170 *ar);
 534 void carl9170_free(struct ar9170 *ar);
 535 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 536 void carl9170_ps_check(struct ar9170 *ar);
 537
 538 /* USB back-end */
 539 int carl9170_usb_open(struct ar9170 *ar);
 540 void carl9170_usb_stop(struct ar9170 *ar);
 541 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 542 void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 543 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 544                       u32 plen, void *payload, u32 rlen, void *resp);
 545 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 546                         const bool free_buf);
 547 int carl9170_usb_restart(struct ar9170 *ar);
 548 void carl9170_usb_reset(struct ar9170 *ar);
 549
 550 /* MAC */
 551 int carl9170_init_mac(struct ar9170 *ar);
 552 int carl9170_set_qos(struct ar9170 *ar);
 553 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 554 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 555                              const u8 *mac);
 556 int carl9170_set_operating_mode(struct ar9170 *ar);
 557 int carl9170_set_beacon_timers(struct ar9170 *ar);
 558 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 559 int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 560 int carl9170_set_ampdu_settings(struct ar9170 *ar);
 561 int carl9170_set_slot_time(struct ar9170 *ar);
 562 int carl9170_set_mac_rates(struct ar9170 *ar);
 563 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 564 int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
 565         const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
 566 int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 567 int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
 568
 569 /* RX */
 570 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 571 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 572
 573 /* TX */
 574 void carl9170_op_tx(struct ieee80211_hw *hw,
 575                     struct ieee80211_tx_control *control,
 576                     struct sk_buff *skb);
 577 void carl9170_tx_janitor(struct work_struct *work);
 578 void carl9170_tx_process_status(struct ar9170 *ar,
 579                                 const struct carl9170_rsp *cmd);
 580 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 581                         const bool success);
 582 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 583 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 584 void carl9170_tx_scheduler(struct ar9170 *ar);
 585 void carl9170_tx_get_skb(struct sk_buff *skb);
 586 int carl9170_tx_put_skb(struct sk_buff *skb);
 587 int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 588
 589 /* LEDs */
 590 #ifdef CONFIG_CARL9170_LEDS
 591 int carl9170_led_register(struct ar9170 *ar);
 592 void carl9170_led_unregister(struct ar9170 *ar);
 593 #endif /* CONFIG_CARL9170_LEDS */
 594 int carl9170_led_init(struct ar9170 *ar);
 595 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 596
 597 /* PHY / RF */
 598 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 599                          enum nl80211_channel_type bw);
 600 int carl9170_get_noisefloor(struct ar9170 *ar);
 601
 602 /* FW */
 603 int carl9170_parse_firmware(struct ar9170 *ar);
 604
 605 extern struct ieee80211_rate __carl9170_ratetable[];
 606 extern int modparam_noht;
 607
 608 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
 609 {
 610         return container_of(carl_vif, struct ar9170,
 611                             vif_priv[carl_vif->id]);
 612 }
 613
 614 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
 615 {
 616         return (void *)((struct _carl9170_tx_superframe *)
 617                 skb->data)->frame_data;
 618 }
 619
 620 static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 621 {
 622         return le16_to_cpu(hdr->seq_ctrl) >> 4;
 623 }
 624
 625 static inline u16 carl9170_get_seq(struct sk_buff *skb)
 626 {
 627         return get_seq_h(carl9170_get_hdr(skb));
 628 }
 629
 630 static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
 631 {
 632         return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
 633 }
 634
 635 static inline u16 carl9170_get_tid(struct sk_buff *skb)
 636 {
 637         return get_tid_h(carl9170_get_hdr(skb));
 638 }
 639
 640 static inline struct ieee80211_vif *
 641 carl9170_get_vif(struct carl9170_vif_info *priv)
 642 {
 643         return container_of((void *)priv, struct ieee80211_vif, drv_priv);
 644 }
 645
 646 /* Protected by ar->mutex or RCU */
 647 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
 648 {
 649         struct carl9170_vif_info *cvif;
 650
 651         list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
 652                 if (cvif->active)
 653                         return carl9170_get_vif(cvif);
 654         }
 655
 656         return NULL;
 657 }
 658
 659 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
 660 {
 661         bool ret;
 662
 663         rcu_read_lock();
 664         ret = (carl9170_get_main_vif(ar) == vif);
 665         rcu_read_unlock();
 666         return ret;
 667 }
 668
 669 #endif /* __CARL9170_H */