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
 138 #define CARL9170_QUEUE_TIMEOUT          256
 139 #define CARL9170_BUMP_QUEUE             1000
 140 #define CARL9170_TX_TIMEOUT             2500
 141 #define CARL9170_JANITOR_DELAY          128
 142 #define CARL9170_QUEUE_STUCK_TIMEOUT    5500
 143 #define CARL9170_STAT_WORK              30000
 144
 145 #define CARL9170_NUM_TX_AGG_MAX         30
 146
 147 /*
 148  * Tradeoff between stability/latency and speed.
 149  *
 150  * AR9170_TXQ_DEPTH is devised by dividing the amount of available
 151  * tx buffers with the size of a full ethernet frame + overhead.
 152  *
 153  * Naturally: The higher the limit, the faster the device CAN send.
 154  * However, even a slight over-commitment at the wrong time and the
 155  * hardware is doomed to send all already-queued frames at suboptimal
 156  * rates. This in turn leads to an enormous amount of unsuccessful
 157  * retries => Latency goes up, whereas the throughput goes down. CRASH!
 158  */
 159 #define CARL9170_NUM_TX_LIMIT_HARD      ((AR9170_TXQ_DEPTH * 3) / 2)
 160 #define CARL9170_NUM_TX_LIMIT_SOFT      (AR9170_TXQ_DEPTH)
 161
 162 struct carl9170_tx_queue_stats {
 163         unsigned int count;
 164         unsigned int limit;
 165         unsigned int len;
 166 };
 167
 168 struct carl9170_vif {
 169         unsigned int id;
 170         struct ieee80211_vif __rcu *vif;
 171 };
 172
 173 struct carl9170_vif_info {
 174         struct list_head list;
 175         bool active;
 176         unsigned int id;
 177         struct sk_buff *beacon;
 178         bool enable_beacon;
 179 };
 180
 181 #define AR9170_NUM_RX_URBS      16
 182 #define AR9170_NUM_RX_URBS_MUL  2
 183 #define AR9170_NUM_TX_URBS      8
 184 #define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
 185
 186 enum carl9170_device_features {
 187         CARL9170_WPS_BUTTON             = BIT(0),
 188         CARL9170_ONE_LED                = BIT(1),
 189 };
 190
 191 #ifdef CONFIG_CARL9170_LEDS
 192 struct ar9170;
 193
 194 struct carl9170_led {
 195         struct ar9170 *ar;
 196         struct led_classdev l;
 197         char name[32];
 198         unsigned int toggled;
 199         bool last_state;
 200         bool registered;
 201 };
 202 #endif /* CONFIG_CARL9170_LEDS */
 203
 204 enum carl9170_restart_reasons {
 205         CARL9170_RR_NO_REASON = 0,
 206         CARL9170_RR_FATAL_FIRMWARE_ERROR,
 207         CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
 208         CARL9170_RR_WATCHDOG,
 209         CARL9170_RR_STUCK_TX,
 210         CARL9170_RR_UNRESPONSIVE_DEVICE,
 211         CARL9170_RR_COMMAND_TIMEOUT,
 212         CARL9170_RR_TOO_MANY_PHY_ERRORS,
 213         CARL9170_RR_LOST_RSP,
 214         CARL9170_RR_INVALID_RSP,
 215         CARL9170_RR_USER_REQUEST,
 216
 217         __CARL9170_RR_LAST,
 218 };
 219
 220 enum carl9170_erp_modes {
 221         CARL9170_ERP_INVALID,
 222         CARL9170_ERP_AUTO,
 223         CARL9170_ERP_MAC80211,
 224         CARL9170_ERP_OFF,
 225         CARL9170_ERP_CTS,
 226         CARL9170_ERP_RTS,
 227         __CARL9170_ERP_NUM,
 228 };
 229
 230 struct ar9170 {
 231         struct ath_common common;
 232         struct ieee80211_hw *hw;
 233         struct mutex mutex;
 234         enum carl9170_device_state state;
 235         spinlock_t state_lock;
 236         enum carl9170_restart_reasons last_reason;
 237         bool registered;
 238
 239         /* USB */
 240         struct usb_device *udev;
 241         struct usb_interface *intf;
 242         struct usb_anchor rx_anch;
 243         struct usb_anchor rx_work;
 244         struct usb_anchor rx_pool;
 245         struct usb_anchor tx_wait;
 246         struct usb_anchor tx_anch;
 247         struct usb_anchor tx_cmd;
 248         struct usb_anchor tx_err;
 249         struct tasklet_struct usb_tasklet;
 250         atomic_t tx_cmd_urbs;
 251         atomic_t tx_anch_urbs;
 252         atomic_t rx_anch_urbs;
 253         atomic_t rx_work_urbs;
 254         atomic_t rx_pool_urbs;
 255         kernel_ulong_t features;
 256         bool usb_ep_cmd_is_bulk;
 257
 258         /* firmware settings */
 259         struct completion fw_load_wait;
 260         struct completion fw_boot_wait;
 261         struct {
 262                 const struct carl9170fw_desc_head *desc;
 263                 const struct firmware *fw;
 264                 unsigned int offset;
 265                 unsigned int address;
 266                 unsigned int cmd_bufs;
 267                 unsigned int api_version;
 268                 unsigned int vif_num;
 269                 unsigned int err_counter;
 270                 unsigned int bug_counter;
 271                 u32 beacon_addr;
 272                 unsigned int beacon_max_len;
 273                 bool rx_stream;
 274                 bool tx_stream;
 275                 bool rx_filter;
 276                 bool hw_counters;
 277                 unsigned int mem_blocks;
 278                 unsigned int mem_block_size;
 279                 unsigned int rx_size;
 280                 unsigned int tx_seq_table;
 281                 bool ba_filter;
 282                 bool disable_offload_fw;
 283         } fw;
 284
 285         /* interface configuration combinations */
 286         struct ieee80211_iface_limit if_comb_limits[1];
 287         struct ieee80211_iface_combination if_combs[1];
 288
 289         /* reset / stuck frames/queue detection */
 290         struct work_struct restart_work;
 291         struct work_struct ping_work;
 292         unsigned int restart_counter;
 293         unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
 294         unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
 295         bool needs_full_reset;
 296         bool force_usb_reset;
 297         atomic_t pending_restarts;
 298
 299         /* interface mode settings */
 300         struct list_head vif_list;
 301         unsigned long vif_bitmap;
 302         unsigned int vifs;
 303         struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
 304
 305         /* beaconing */
 306         spinlock_t beacon_lock;
 307         unsigned int global_pretbtt;
 308         unsigned int global_beacon_int;
 309         struct carl9170_vif_info __rcu *beacon_iter;
 310         unsigned int beacon_enabled;
 311
 312         /* cryptographic engine */
 313         u64 usedkeys;
 314         bool rx_software_decryption;
 315         bool disable_offload;
 316
 317         /* filter settings */
 318         u64 cur_mc_hash;
 319         u32 cur_filter;
 320         unsigned int filter_state;
 321         unsigned int rx_filter_caps;
 322         bool sniffer_enabled;
 323
 324         /* MAC */
 325         enum carl9170_erp_modes erp_mode;
 326
 327         /* PHY */
 328         struct ieee80211_channel *channel;
 329         unsigned int num_channels;
 330         int noise[4];
 331         unsigned int chan_fail;
 332         unsigned int total_chan_fail;
 333         u8 heavy_clip;
 334         u8 ht_settings;
 335         struct {
 336                 u64 active;     /* usec */
 337                 u64 cca;        /* usec */
 338                 u64 tx_time;    /* usec */
 339                 u64 rx_total;
 340                 u64 rx_overrun;
 341         } tally;
 342         struct delayed_work stat_work;
 343         struct survey_info *survey;
 344
 345         /* power calibration data */
 346         u8 power_5G_leg[4];
 347         u8 power_2G_cck[4];
 348         u8 power_2G_ofdm[4];
 349         u8 power_5G_ht20[8];
 350         u8 power_5G_ht40[8];
 351         u8 power_2G_ht20[8];
 352         u8 power_2G_ht40[8];
 353
 354 #ifdef CONFIG_CARL9170_LEDS
 355         /* LED */
 356         struct delayed_work led_work;
 357         struct carl9170_led leds[AR9170_NUM_LEDS];
 358 #endif /* CONFIG_CARL9170_LEDS */
 359
 360         /* qos queue settings */
 361         spinlock_t tx_stats_lock;
 362         struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
 363         struct ieee80211_tx_queue_params edcf[5];
 364         struct completion tx_flush;
 365
 366         /* CMD */
 367         int cmd_seq;
 368         int readlen;
 369         u8 *readbuf;
 370         spinlock_t cmd_lock;
 371         struct completion cmd_wait;
 372         union {
 373                 __le32 cmd_buf[PAYLOAD_MAX + 1];
 374                 struct carl9170_cmd cmd;
 375                 struct carl9170_rsp rsp;
 376         };
 377
 378         /* statistics */
 379         unsigned int tx_dropped;
 380         unsigned int tx_ack_failures;
 381         unsigned int tx_fcs_errors;
 382         unsigned int rx_dropped;
 383
 384         /* EEPROM */
 385         struct ar9170_eeprom eeprom;
 386
 387         /* tx queuing */
 388         struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 389         struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 390         struct delayed_work tx_janitor;
 391         unsigned long tx_janitor_last_run;
 392         bool tx_schedule;
 393
 394         /* tx ampdu */
 395         struct work_struct ampdu_work;
 396         spinlock_t tx_ampdu_list_lock;
 397         struct carl9170_sta_tid __rcu *tx_ampdu_iter;
 398         struct list_head tx_ampdu_list;
 399         atomic_t tx_ampdu_upload;
 400         atomic_t tx_ampdu_scheduler;
 401         atomic_t tx_total_pending;
 402         atomic_t tx_total_queued;
 403         unsigned int tx_ampdu_list_len;
 404         int current_density;
 405         int current_factor;
 406         bool tx_ampdu_schedule;
 407
 408         /* internal memory management */
 409         spinlock_t mem_lock;
 410         unsigned long *mem_bitmap;
 411         atomic_t mem_free_blocks;
 412         atomic_t mem_allocs;
 413
 414         /* rxstream mpdu merge */
 415         struct ar9170_rx_head rx_plcp;
 416         bool rx_has_plcp;
 417         struct sk_buff *rx_failover;
 418         int rx_failover_missing;
 419         u32 ampdu_ref;
 420
 421         /* FIFO for collecting outstanding BlockAckRequest */
 422         struct list_head bar_list[__AR9170_NUM_TXQ];
 423         spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
 424
 425 #ifdef CONFIG_CARL9170_WPC
 426         struct {
 427                 bool pbc_state;
 428                 struct input_dev *pbc;
 429                 char name[32];
 430                 char phys[32];
 431         } wps;
 432 #endif /* CONFIG_CARL9170_WPC */
 433
 434 #ifdef CONFIG_CARL9170_DEBUGFS
 435         struct carl9170_debug debug;
 436         struct dentry *debug_dir;
 437 #endif /* CONFIG_CARL9170_DEBUGFS */
 438
 439         /* PSM */
 440         struct work_struct ps_work;
 441         struct {
 442                 unsigned int dtim_counter;
 443                 unsigned long last_beacon;
 444                 unsigned long last_action;
 445                 unsigned long last_slept;
 446                 unsigned int sleep_ms;
 447                 unsigned int off_override;
 448                 bool state;
 449         } ps;
 450
 451 #ifdef CONFIG_CARL9170_HWRNG
 452 # define CARL9170_HWRNG_CACHE_SIZE      CARL9170_MAX_CMD_PAYLOAD_LEN
 453         struct {
 454                 struct hwrng rng;
 455                 bool initialized;
 456                 char name[30 + 1];
 457                 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
 458                 unsigned int cache_idx;
 459         } rng;
 460 #endif /* CONFIG_CARL9170_HWRNG */
 461 };
 462
 463 enum carl9170_ps_off_override_reasons {
 464         PS_OFF_VIF      = BIT(0),
 465         PS_OFF_BCN      = BIT(1),
 466 };
 467
 468 struct carl9170_bar_list_entry {
 469         struct list_head list;
 470         struct rcu_head head;
 471         struct sk_buff *skb;
 472 };
 473
 474 struct carl9170_ba_stats {
 475         u8 ampdu_len;
 476         u8 ampdu_ack_len;
 477         bool clear;
 478         bool req;
 479 };
 480
 481 struct carl9170_sta_info {
 482         bool ht_sta;
 483         bool sleeping;
 484         atomic_t pending_frames;
 485         unsigned int ampdu_max_len;
 486         struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
 487         struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
 488 };
 489
 490 struct carl9170_tx_info {
 491         unsigned long timeout;
 492         struct ar9170 *ar;
 493         struct kref ref;
 494 };
 495
 496 #define CHK_DEV_STATE(a, s)     (((struct ar9170 *)a)->state >= (s))
 497 #define IS_INITIALIZED(a)       (CHK_DEV_STATE(a, CARL9170_STOPPED))
 498 #define IS_ACCEPTING_CMD(a)     (CHK_DEV_STATE(a, CARL9170_IDLE))
 499 #define IS_STARTED(a)           (CHK_DEV_STATE(a, CARL9170_STARTED))
 500
 501 static inline void __carl9170_set_state(struct ar9170 *ar,
 502         enum carl9170_device_state newstate)
 503 {
 504         ar->state = newstate;
 505 }
 506
 507 static inline void carl9170_set_state(struct ar9170 *ar,
 508         enum carl9170_device_state newstate)
 509 {
 510         unsigned long flags;
 511
 512         spin_lock_irqsave(&ar->state_lock, flags);
 513         __carl9170_set_state(ar, newstate);
 514         spin_unlock_irqrestore(&ar->state_lock, flags);
 515 }
 516
 517 static inline void carl9170_set_state_when(struct ar9170 *ar,
 518         enum carl9170_device_state min, enum carl9170_device_state newstate)
 519 {
 520         unsigned long flags;
 521
 522         spin_lock_irqsave(&ar->state_lock, flags);
 523         if (CHK_DEV_STATE(ar, min))
 524                 __carl9170_set_state(ar, newstate);
 525         spin_unlock_irqrestore(&ar->state_lock, flags);
 526 }
 527
 528 /* exported interface */
 529 void *carl9170_alloc(size_t priv_size);
 530 int carl9170_register(struct ar9170 *ar);
 531 void carl9170_unregister(struct ar9170 *ar);
 532 void carl9170_free(struct ar9170 *ar);
 533 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
 534 void carl9170_ps_check(struct ar9170 *ar);
 535
 536 /* USB back-end */
 537 int carl9170_usb_open(struct ar9170 *ar);
 538 void carl9170_usb_stop(struct ar9170 *ar);
 539 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
 540 void carl9170_usb_handle_tx_err(struct ar9170 *ar);
 541 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
 542                       u32 plen, void *payload, u32 rlen, void *resp);
 543 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
 544                         const bool free_buf);
 545 int carl9170_usb_restart(struct ar9170 *ar);
 546 void carl9170_usb_reset(struct ar9170 *ar);
 547
 548 /* MAC */
 549 int carl9170_init_mac(struct ar9170 *ar);
 550 int carl9170_set_qos(struct ar9170 *ar);
 551 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 552 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
 553                              const u8 *mac);
 554 int carl9170_set_operating_mode(struct ar9170 *ar);
 555 int carl9170_set_beacon_timers(struct ar9170 *ar);
 556 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
 557 int carl9170_set_rts_cts_rate(struct ar9170 *ar);
 558 int carl9170_set_ampdu_settings(struct ar9170 *ar);
 559 int carl9170_set_slot_time(struct ar9170 *ar);
 560 int carl9170_set_mac_rates(struct ar9170 *ar);
 561 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
 562 int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
 563         const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
 564 int carl9170_disable_key(struct ar9170 *ar, const u8 id);
 565 int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
 566
 567 /* RX */
 568 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 569 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 570
 571 /* TX */
 572 void carl9170_op_tx(struct ieee80211_hw *hw,
 573                     struct ieee80211_tx_control *control,
 574                     struct sk_buff *skb);
 575 void carl9170_tx_janitor(struct work_struct *work);
 576 void carl9170_tx_process_status(struct ar9170 *ar,
 577                                 const struct carl9170_rsp *cmd);
 578 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
 579                         const bool success);
 580 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 581 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
 582 void carl9170_tx_scheduler(struct ar9170 *ar);
 583 void carl9170_tx_get_skb(struct sk_buff *skb);
 584 int carl9170_tx_put_skb(struct sk_buff *skb);
 585 int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
 586
 587 /* LEDs */
 588 #ifdef CONFIG_CARL9170_LEDS
 589 int carl9170_led_register(struct ar9170 *ar);
 590 void carl9170_led_unregister(struct ar9170 *ar);
 591 #endif /* CONFIG_CARL9170_LEDS */
 592 int carl9170_led_init(struct ar9170 *ar);
 593 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
 594
 595 /* PHY / RF */
 596 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 597                          enum nl80211_channel_type bw);
 598 int carl9170_get_noisefloor(struct ar9170 *ar);
 599
 600 /* FW */
 601 int carl9170_parse_firmware(struct ar9170 *ar);
 602
 603 extern struct ieee80211_rate __carl9170_ratetable[];
 604 extern int modparam_noht;
 605
 606 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
 607 {
 608         return container_of(carl_vif, struct ar9170,
 609                             vif_priv[carl_vif->id]);
 610 }
 611
 612 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
 613 {
 614         return (void *)((struct _carl9170_tx_superframe *)
 615                 skb->data)->frame_data;
 616 }
 617
 618 static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
 619 {
 620         return le16_to_cpu(hdr->seq_ctrl) >> 4;
 621 }
 622
 623 static inline u16 carl9170_get_seq(struct sk_buff *skb)
 624 {
 625         return get_seq_h(carl9170_get_hdr(skb));
 626 }
 627
 628 static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
 629 {
 630         return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
 631 }
 632
 633 static inline u16 carl9170_get_tid(struct sk_buff *skb)
 634 {
 635         return get_tid_h(carl9170_get_hdr(skb));
 636 }
 637
 638 static inline struct ieee80211_vif *
 639 carl9170_get_vif(struct carl9170_vif_info *priv)
 640 {
 641         return container_of((void *)priv, struct ieee80211_vif, drv_priv);
 642 }
 643
 644 /* Protected by ar->mutex or RCU */
 645 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
 646 {
 647         struct carl9170_vif_info *cvif;
 648
 649         list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
 650                 if (cvif->active)
 651                         return carl9170_get_vif(cvif);
 652         }
 653
 654         return NULL;
 655 }
 656
 657 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
 658 {
 659         bool ret;
 660
 661         rcu_read_lock();
 662         ret = (carl9170_get_main_vif(ar) == vif);
 663         rcu_read_unlock();
 664         return ret;
 665 }
 666
 667 #endif /* __CARL9170_H */