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 enum carl9170_rf_init_mode {
  74         CARL9170_RFI_NONE,
  75         CARL9170_RFI_WARM,
  76         CARL9170_RFI_COLD,
  77 };
  78
  79 #define CARL9170_MAX_RX_BUFFER_SIZE             8192
  80
  81 enum carl9170_device_state {
  82         CARL9170_UNKNOWN_STATE,
  83         CARL9170_STOPPED,
  84         CARL9170_IDLE,
  85         CARL9170_STARTED,
  86 };
  87
  88 #define CARL9170_NUM_TID                16
  89 #define WME_BA_BMP_SIZE                 64
  90 #define CARL9170_TX_USER_RATE_TRIES     3
  91
  92 #define WME_AC_BE   2
  93 #define WME_AC_BK   3
  94 #define WME_AC_VI   1
  95 #define WME_AC_VO   0
  96
  97 #define TID_TO_WME_AC(_tid)                             \
  98         ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \
  99          (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \
 100          (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \
 101          WME_AC_VO)
 102
 103 #define SEQ_DIFF(_start, _seq) \
 104         (((_start) - (_seq)) & 0x0fff)
 105 #define SEQ_PREV(_seq) \
 106         (((_seq) - 1) & 0x0fff)
 107 #define SEQ_NEXT(_seq) \
 108         (((_seq) + 1) & 0x0fff)
 109 #define BAW_WITHIN(_start, _bawsz, _seqno) \
 110         ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
 111
 112 enum carl9170_tid_state {
 113         CARL9170_TID_STATE_INVALID,
 114         CARL9170_TID_STATE_KILLED,
 115         CARL9170_TID_STATE_SHUTDOWN,
 116         CARL9170_TID_STATE_SUSPEND,
 117         CARL9170_TID_STATE_PROGRESS,
 118         CARL9170_TID_STATE_IDLE,
 119         CARL9170_TID_STATE_XMIT,
 120 };
 121
 122 #define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
 123 #define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
 124 #define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
 125
 126 struct carl9170_sta_tid {
 127         /* must be the first entry! */
 128         struct list_head list;
 129
 130         /* temporary list for RCU unlink procedure */
 131         struct list_head tmp_list;
 132
 133         /* lock for the following data structures */
 134         spinlock_t lock;
 135
 136         unsigned int counter;
 137         enum carl9170_tid_state state;
 138         u8 tid;         /* TID number ( 0 - 15 ) */
 139         u16 max;        /* max. AMPDU size */
 140
 141         u16 snx;        /* awaiting _next_ frame */
 142         u16 hsn;        /* highest _queued_ sequence */
 143         u16 bsn;        /* base of the tx/agg bitmap */
 144         unsigned long bitmap[CARL9170_BAW_SIZE];
 145
 146         /* Preaggregation reorder queue */
 147         struct sk_buff_head queue;
 148 };
 149
 150 #define CARL9170_QUEUE_TIMEOUT          256
 151 #define CARL9170_BUMP_QUEUE             1000
 152 #define CARL9170_TX_TIMEOUT             2500
 153 #define CARL9170_JANITOR_DELAY          128
 154 #define CARL9170_QUEUE_STUCK_TIMEOUT    5500
 155 #define CARL9170_STAT_WORK              30000
 156
 157 #define CARL9170_NUM_TX_AGG_MAX         30
 158
 159 /*
 160  * Tradeoff between stability/latency and speed.
 161  *
 162  * AR9170_TXQ_DEPTH is devised by dividing the amount of available
 163  * tx buffers with the size of a full ethernet frame + overhead.
 164  *
 165  * Naturally: The higher the limit, the faster the device CAN send.
 166  * However, even a slight over-commitment at the wrong time and the
 167  * hardware is doomed to send all already-queued frames at suboptimal
 168  * rates. This in turn leads to an enormous amount of unsuccessful
 169  * retries => Latency goes up, whereas the throughput goes down. CRASH!
 170  */
 171 #define CARL9170_NUM_TX_LIMIT_HARD      ((AR9170_TXQ_DEPTH * 3) / 2)
 172 #define CARL9170_NUM_TX_LIMIT_SOFT      (AR9170_TXQ_DEPTH)
 173
 174 struct carl9170_tx_queue_stats {
 175         unsigned int count;
 176         unsigned int limit;
 177         unsigned int len;
 178 };
 179
 180 struct carl9170_vif {
 181         unsigned int id;
 182         struct ieee80211_vif __rcu *vif;
 183 };
 184
 185 struct carl9170_vif_info {
 186         struct list_head list;
 187         bool active;
 188         unsigned int id;
 189         struct sk_buff *beacon;
 190         bool enable_beacon;
 191 };
 192
 193 #define AR9170_NUM_RX_URBS      16
 194 #define AR9170_NUM_RX_URBS_MUL  2
 195 #define AR9170_NUM_TX_URBS      8
 196 #define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
 197
 198 enum carl9170_device_features {
 199         CARL9170_WPS_BUTTON             = BIT(0),
 200         CARL9170_ONE_LED                = BIT(1),
 201 };
 202
 203 #ifdef CONFIG_CARL9170_LEDS
 204 struct ar9170;
 205
 206 struct carl9170_led {
 207         struct ar9170 *ar;
 208         struct led_classdev l;
 209         char name[32];
 210         unsigned int toggled;
 211         bool last_state;
 212         bool registered;
 213 };
 214 #endif /* CONFIG_CARL9170_LEDS */
 215
 216 enum carl9170_restart_reasons {
 217         CARL9170_RR_NO_REASON = 0,
 218         CARL9170_RR_FATAL_FIRMWARE_ERROR,
 219         CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
 220         CARL9170_RR_WATCHDOG,
 221         CARL9170_RR_STUCK_TX,
 222         CARL9170_RR_UNRESPONSIVE_DEVICE,
 223         CARL9170_RR_COMMAND_TIMEOUT,
 224         CARL9170_RR_TOO_MANY_PHY_ERRORS,
 225         CARL9170_RR_LOST_RSP,
 226         CARL9170_RR_INVALID_RSP,
 227         CARL9170_RR_USER_REQUEST,
 228
 229         __CARL9170_RR_LAST,
 230 };
 231
 232 enum carl9170_erp_modes {
 233         CARL9170_ERP_INVALID,
 234         CARL9170_ERP_AUTO,
 235         CARL9170_ERP_MAC80211,
 236         CARL9170_ERP_OFF,
 237         CARL9170_ERP_CTS,
 238         CARL9170_ERP_RTS,
 239         __CARL9170_ERP_NUM,
 240 };
 241
 242 struct ar9170 {
 243         struct ath_common common;
 244         struct ieee80211_hw *hw;
 245         struct mutex mutex;
 246         enum carl9170_device_state state;
 247         spinlock_t state_lock;
 248         enum carl9170_restart_reasons last_reason;
 249         bool registered;
 250
 251         /* USB */
 252         struct usb_device *udev;
 253         struct usb_interface *intf;
 254         struct usb_anchor rx_anch;
 255         struct usb_anchor rx_work;
 256         struct usb_anchor rx_pool;
 257         struct usb_anchor tx_wait;
 258         struct usb_anchor tx_anch;
 259         struct usb_anchor tx_cmd;
 260         struct usb_anchor tx_err;
 261         struct tasklet_struct usb_tasklet;
 262         atomic_t tx_cmd_urbs;
 263         atomic_t tx_anch_urbs;
 264         atomic_t rx_anch_urbs;
 265         atomic_t rx_work_urbs;
 266         atomic_t rx_pool_urbs;
 267         kernel_ulong_t features;
 268
 269         /* firmware settings */
 270         struct completion fw_load_wait;
 271         struct completion fw_boot_wait;
 272         struct {
 273                 const struct carl9170fw_desc_head *desc;
 274                 const struct firmware *fw;
 275                 unsigned int offset;
 276                 unsigned int address;
 277                 unsigned int cmd_bufs;
 278                 unsigned int api_version;
 279                 unsigned int vif_num;
 280                 unsigned int err_counter;
 281                 unsigned int bug_counter;
 282                 u32 beacon_addr;
 283                 unsigned int beacon_max_len;
 284                 bool rx_stream;
 285                 bool tx_stream;
 286                 bool rx_filter;
 287                 bool hw_counters;
 288                 unsigned int mem_blocks;
 289                 unsigned int mem_block_size;
 290                 unsigned int rx_size;
 291                 unsigned int tx_seq_table;
 292         } fw;
 293
 294         /* interface configuration combinations */
 295         struct ieee80211_iface_limit if_comb_limits[1];
 296         struct ieee80211_iface_combination if_combs[1];
 297
 298         /* reset / stuck frames/queue detection */
 299         struct work_struct restart_work;
 300         struct work_struct ping_work;
 301         unsigned int restart_counter;
 302         unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
 303         unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
 304         bool needs_full_reset;
 305         atomic_t pending_restarts;
 306
 307         /* interface mode settings */
 308         struct list_head vif_list;
 309         unsigned long vif_bitmap;
 310         unsigned int vifs;
 311         struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
 312
 313         /* beaconing */
 314         spinlock_t beacon_lock;
 315         unsigned int global_pretbtt;
 316         unsigned int global_beacon_int;
 317         struct carl9170_vif_info __rcu *beacon_iter;
 318         unsigned int beacon_enabled;
 319
 320         /* cryptographic engine */
 321         u64 usedkeys;
 322         bool rx_software_decryption;
 323         bool disable_offload;
 324
 325         /* filter settings */
 326         u64 cur_mc_hash;
 327         u32 cur_filter;
 328         unsigned int filter_state;
 329         unsigned int rx_filter_caps;
 330         bool sniffer_enabled;
 331
 332         /* MAC */
 333         enum carl9170_erp_modes erp_mode;
 334
 335         /* PHY */
 336         struct ieee80211_channel *channel;
 337         unsigned int num_channels;
 338         int noise[4];
 339         unsigned int chan_fail;
 340         unsigned int total_chan_fail;
 341         u8 heavy_clip;
 342         u8 ht_settings;
 343         struct {
 344                 u64 active;     /* usec */
 345                 u64 cca;        /* usec */
 346                 u64 tx_time;    /* usec */
 347                 u64 rx_total;
 348                 u64 rx_overrun;
 349         } tally;
 350         struct delayed_work stat_work;
 351         struct survey_info *survey;
 352
 353         /* power calibration data */
 354         u8 power_5G_leg[4];
 355         u8 power_2G_cck[4];
 356         u8 power_2G_ofdm[4];
 357         u8 power_5G_ht20[8];
 358         u8 power_5G_ht40[8];
 359         u8 power_2G_ht20[8];
 360         u8 power_2G_ht40[8];
 361
 362 #ifdef CONFIG_CARL9170_LEDS
 363         /* LED */
 364         struct delayed_work led_work;
 365         struct carl9170_led leds[AR9170_NUM_LEDS];
 366 #endif /* CONFIG_CARL9170_LEDS */
 367
 368         /* qos queue settings */
 369         spinlock_t tx_stats_lock;
 370         struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
 371         struct ieee80211_tx_queue_params edcf[5];
 372         struct completion tx_flush;
 373
 374         /* CMD */
 375         int cmd_seq;
 376         int readlen;
 377         u8 *readbuf;
 378         spinlock_t cmd_lock;
 379         struct completion cmd_wait;
 380         union {
 381                 __le32 cmd_buf[PAYLOAD_MAX + 1];
 382                 struct carl9170_cmd cmd;
 383                 struct carl9170_rsp rsp;
 384         };
 385
 386         /* statistics */
 387         unsigned int tx_dropped;
 388         unsigned int tx_ack_failures;
 389         unsigned int tx_fcs_errors;
 390         unsigned int rx_dropped;
 391
 392         /* EEPROM */
 393         struct ar9170_eeprom eeprom;
 394
 395         /* tx queuing */
 396         struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 397         struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 398         struct delayed_work tx_janitor;
 399         unsigned long tx_janitor_last_run;
 400         bool tx_schedule;
 401
 402         /* tx ampdu */
 403         struct work_struct ampdu_work;
 404         spinlock_t tx_ampdu_list_lock;
 405         struct carl9170_sta_tid __rcu *tx_ampdu_iter;
 406         struct list_head tx_ampdu_list;
 407         atomic_t tx_ampdu_upload;
 408         atomic_t tx_ampdu_scheduler;
 409         atomic_t tx_total_pending;
 410         atomic_t tx_total_queued;
 411         unsigned int tx_ampdu_list_len;
 412         int current_density;
 413         int current_factor;
 414         bool tx_ampdu_schedule;
 415
 416         /* internal memory management */
 417         spinlock_t mem_lock;
 418         unsigned long *mem_bitmap;
 419         atomic_t mem_free_blocks;
 420         atomic_t mem_allocs;
 421
 422         /* rxstream mpdu merge */
 423         struct ar9170_rx_head rx_plcp;
 424         bool rx_has_plcp;
 425         struct sk_buff *rx_failover;
 426         int rx_failover_missing;
 427
 428 #ifdef CONFIG_CARL9170_WPC
 429         struct {
 430                 bool pbc_state;
 431                 struct input_dev *pbc;
 432                 char name[32];
 433                 char phys[32];
 434         } wps;
 435 #endif /* CONFIG_CARL9170_WPC */
 436
 437 #ifdef CONFIG_CARL9170_DEBUGFS
 438         struct carl9170_debug debug;
 439         struct dentry *debug_dir;
 440 #endif /* CONFIG_CARL9170_DEBUGFS */
 441
 442         /* PSM */
 443         struct work_struct ps_work;
 444         struct {
 445                 unsigned int dtim_counter;
 446                 unsigned long last_beacon;
 447                 unsigned long last_action;
 448                 unsigned long last_slept;
 449                 unsigned int sleep_ms;
 450                 unsigned int off_override;
 451                 bool state;
 452         } ps;
 453
 454 #ifdef CONFIG_CARL9170_HWRNG
 455 # define CARL9170_HWRNG_CACHE_SIZE      CARL9170_MAX_CMD_PAYLOAD_LEN
 456         struct {
 457                 struct hwrng rng;
 458                 bool initialized;
 459                 char name[30 + 1];
 460                 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
 461                 unsigned int cache_idx;
 462         } rng;
 463 #endif /* CONFIG_CARL9170_HWRNG */
 464 };
 465
 466 enum carl9170_ps_off_override_reasons {
 467         PS_OFF_VIF      = BIT(0),
 468         PS_OFF_BCN      = BIT(1),
 469 };
 470
 471 struct carl9170_ba_stats {
 472         u8 ampdu_len;
 473         u8 ampdu_ack_len;
 474         bool clear;
 475         bool req;
 476 };
 477
 478 struct carl9170_sta_info {
 479         bool ht_sta;
 480         bool sleeping;
 481         atomic_t pending_frames;
 482         unsigned int ampdu_max_len;
 483         struct carl9170_sta_tid __rcu *agg[CARL9170_NUM_TID];
 484         struct carl9170_ba_stats stats[CARL9170_NUM_TID];
 485 };
 486
 487 struct carl9170_tx_info {
 488         unsigned long timeout;
 489         struct ar9170 *ar;
 490         struct kref ref;
 491 };
 492
 493 #define CHK_DEV_STATE(a, s)     (((struct ar9170 *)a)->state >= (s))
 494 #define IS_INITIALIZED(a)       (CHK_DEV_STATE(a, CARL9170_STOPPED))
 495 #define IS_ACCEPTING_CMD(a)     (CHK_DEV_STATE(a, CARL9170_IDLE))
 496 #define IS_STARTED(a)           (CHK_DEV_STATE(a, CARL9170_STARTED))
 497
 498 static inline void __carl9170_set_state(struct ar9170 *ar,
 499         enum carl9170_device_state newstate)
 500 {
 501         ar->state = newstate;
 502 }
 503
 504 static inline void carl9170_set_state(struct ar9170 *ar,
 505         enum carl9170_device_state newstate)
 506 {
 507         unsigned long flags;
 508
 509         spin_lock_irqsave(&ar->state_lock, flags);
 510         __carl9170_set_state(ar, newstate);
 511         spin_unlock_irqrestore(&ar->state_lock, flags);
 512 }
 513
 514 static inline void carl9170_set_state_when(struct ar9170 *ar,
 515         enum carl9170_device_state min, enum carl9170_device_state newstate)
 516 {
 517         unsigned long flags;
 518
 519         spin_lock_irqsave(&ar->state_lock, flags);
 520         if (CHK_DEV_STATE(ar, min))
 521                 __carl9170_set_state(ar, newstate);
 522         spin_unlock_irqrestore(&ar->state_lock, flags);
 523 }
 524
 525 /* exported interface */
 526 void *carl9170_alloc(size_t priv_size);
 527 int carl9170_register(struct ar9170 *ar);
 528 void carl9170_unregister(struct ar9170 *ar);
 529 void carl9170_free(struct ar9170 *ar);
 530 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 531 void carl9170_ps_check(struct ar9170 *ar);
 532
 533 /* USB back-end */
 534 int carl9170_usb_open(struct ar9170 *ar);
 535 void carl9170_usb_stop(struct ar9170 *ar);
 536 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 537 void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 538 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 539                       u32 plen, void *payload, u32 rlen, void *resp);
 540 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 541                         const bool free_buf);
 542 int carl9170_usb_restart(struct ar9170 *ar);
 543 void carl9170_usb_reset(struct ar9170 *ar);
 544
 545 /* MAC */
 546 int carl9170_init_mac(struct ar9170 *ar);
 547 int carl9170_set_qos(struct ar9170 *ar);
 548 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 549 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 550                              const u8 *mac);
 551 int carl9170_set_operating_mode(struct ar9170 *ar);
 552 int carl9170_set_beacon_timers(struct ar9170 *ar);
 553 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 554 int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 555 int carl9170_set_ampdu_settings(struct ar9170 *ar);
 556 int carl9170_set_slot_time(struct ar9170 *ar);
 557 int carl9170_set_mac_rates(struct ar9170 *ar);
 558 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 559 int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
 560         const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
 561 int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 562
 563 /* RX */
 564 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 565 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 566
 567 /* TX */
 568 void carl9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
 569 void carl9170_tx_janitor(struct work_struct *work);
 570 void carl9170_tx_process_status(struct ar9170 *ar,
 571                                 const struct carl9170_rsp *cmd);
 572 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 573                         const bool success);
 574 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 575 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 576 void carl9170_tx_scheduler(struct ar9170 *ar);
 577 void carl9170_tx_get_skb(struct sk_buff *skb);
 578 int carl9170_tx_put_skb(struct sk_buff *skb);
 579 int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 580
 581 /* LEDs */
 582 #ifdef CONFIG_CARL9170_LEDS
 583 int carl9170_led_register(struct ar9170 *ar);
 584 void carl9170_led_unregister(struct ar9170 *ar);
 585 #endif /* CONFIG_CARL9170_LEDS */
 586 int carl9170_led_init(struct ar9170 *ar);
 587 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 588
 589 /* PHY / RF */
 590 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 591         enum nl80211_channel_type bw, enum carl9170_rf_init_mode rfi);
 592 int carl9170_get_noisefloor(struct ar9170 *ar);
 593
 594 /* FW */
 595 int carl9170_parse_firmware(struct ar9170 *ar);
 596 int carl9170_fw_fix_eeprom(struct ar9170 *ar);
 597
 598 extern struct ieee80211_rate __carl9170_ratetable[];
 599 extern int modparam_noht;
 600
 601 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
 602 {
 603         return container_of(carl_vif, struct ar9170,
 604                             vif_priv[carl_vif->id]);
 605 }
 606
 607 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
 608 {
 609         return (void *)((struct _carl9170_tx_superframe *)
 610                 skb->data)->frame_data;
 611 }
 612
 613 static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 614 {
 615         return le16_to_cpu(hdr->seq_ctrl) >> 4;
 616 }
 617
 618 static inline u16 carl9170_get_seq(struct sk_buff *skb)
 619 {
 620         return get_seq_h(carl9170_get_hdr(skb));
 621 }
 622
 623 static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
 624 {
 625         return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
 626 }
 627
 628 static inline u16 carl9170_get_tid(struct sk_buff *skb)
 629 {
 630         return get_tid_h(carl9170_get_hdr(skb));
 631 }
 632
 633 static inline struct ieee80211_vif *
 634 carl9170_get_vif(struct carl9170_vif_info *priv)
 635 {
 636         return container_of((void *)priv, struct ieee80211_vif, drv_priv);
 637 }
 638
 639 /* Protected by ar->mutex or RCU */
 640 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
 641 {
 642         struct carl9170_vif_info *cvif;
 643
 644         list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
 645                 if (cvif->active)
 646                         return carl9170_get_vif(cvif);
 647         }
 648
 649         return NULL;
 650 }
 651
 652 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
 653 {
 654         bool ret;
 655
 656         rcu_read_lock();
 657         ret = (carl9170_get_main_vif(ar) == vif);
 658         rcu_read_unlock();
 659         return ret;
 660 }
 661
 662 #endif /* __CARL9170_H */