drivers/net/wireless/ath/ath9k/ath9k.h

   1 /*
   2  * Copyright (c) 2008-2011 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef ATH9K_H
  18 #define ATH9K_H
  19
  20 #include <linux/etherdevice.h>
  21 #include <linux/device.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/leds.h>
  24 #include <linux/completion.h>
  25
  26 #include "debug.h"
  27 #include "common.h"
  28 #include "mci.h"
  29 #include "dfs.h"
  30
  31 /*
  32  * Header for the ath9k.ko driver core *only* -- hw code nor any other driver
  33  * should rely on this file or its contents.
  34  */
  35
  36 struct ath_node;
  37
  38 /* Macro to expand scalars to 64-bit objects */
  39
  40 #define ito64(x) (sizeof(x) == 1) ?                     \
  41         (((unsigned long long int)(x)) & (0xff)) :      \
  42         (sizeof(x) == 2) ?                              \
  43         (((unsigned long long int)(x)) & 0xffff) :      \
  44         ((sizeof(x) == 4) ?                             \
  45          (((unsigned long long int)(x)) & 0xffffffff) : \
  46          (unsigned long long int)(x))
  47
  48 /* increment with wrap-around */
  49 #define INCR(_l, _sz)   do {                    \
  50                 (_l)++;                         \
  51                 (_l) &= ((_sz) - 1);            \
  52         } while (0)
  53
  54 /* decrement with wrap-around */
  55 #define DECR(_l,  _sz)  do {                    \
  56                 (_l)--;                         \
  57                 (_l) &= ((_sz) - 1);            \
  58         } while (0)
  59
  60 #define TSF_TO_TU(_h,_l) \
  61         ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
  62
  63 #define ATH_TXQ_SETUP(sc, i)        ((sc)->tx.txqsetup & (1<<i))
  64
  65 struct ath_config {
  66         u16 txpowlimit;
  67         u8 cabqReadytime;
  68 };
  69
  70 /*************************/
  71 /* Descriptor Management */
  72 /*************************/
  73
  74 #define ATH_TXBUF_RESET(_bf) do {                               \
  75                 (_bf)->bf_stale = false;                        \
  76                 (_bf)->bf_lastbf = NULL;                        \
  77                 (_bf)->bf_next = NULL;                          \
  78                 memset(&((_bf)->bf_state), 0,                   \
  79                        sizeof(struct ath_buf_state));           \
  80         } while (0)
  81
  82 #define ATH_RXBUF_RESET(_bf) do {               \
  83                 (_bf)->bf_stale = false;        \
  84         } while (0)
  85
  86 /**
  87  * enum buffer_type - Buffer type flags
  88  *
  89  * @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX)
  90  * @BUF_AGGR: Indicates whether the buffer can be aggregated
  91  *      (used in aggregation scheduling)
  92  */
  93 enum buffer_type {
  94         BUF_AMPDU               = BIT(0),
  95         BUF_AGGR                = BIT(1),
  96 };
  97
  98 #define bf_isampdu(bf)          (bf->bf_state.bf_type & BUF_AMPDU)
  99 #define bf_isaggr(bf)           (bf->bf_state.bf_type & BUF_AGGR)
 100
 101 #define ATH_TXSTATUS_RING_SIZE 512
 102
 103 #define DS2PHYS(_dd, _ds)                                               \
 104         ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
 105 #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0)
 106 #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096)
 107
 108 struct ath_descdma {
 109         void *dd_desc;
 110         dma_addr_t dd_desc_paddr;
 111         u32 dd_desc_len;
 112         struct ath_buf *dd_bufptr;
 113 };
 114
 115 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
 116                       struct list_head *head, const char *name,
 117                       int nbuf, int ndesc, bool is_tx);
 118 void ath_descdma_cleanup(struct ath_softc *sc, struct ath_descdma *dd,
 119                          struct list_head *head);
 120
 121 /***********/
 122 /* RX / TX */
 123 /***********/
 124
 125 #define ATH_RXBUF               512
 126 #define ATH_TXBUF               512
 127 #define ATH_TXBUF_RESERVE       5
 128 #define ATH_MAX_QDEPTH          (ATH_TXBUF / 4 - ATH_TXBUF_RESERVE)
 129 #define ATH_TXMAXTRY            13
 130
 131 #define TID_TO_WME_AC(_tid)                             \
 132         ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \
 133          (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \
 134          (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \
 135          WME_AC_VO)
 136
 137 #define ATH_AGGR_DELIM_SZ          4
 138 #define ATH_AGGR_MINPLEN           256 /* in bytes, minimum packet length */
 139 /* number of delimiters for encryption padding */
 140 #define ATH_AGGR_ENCRYPTDELIM      10
 141 /* minimum h/w qdepth to be sustained to maximize aggregation */
 142 #define ATH_AGGR_MIN_QDEPTH        2
 143 #define ATH_AMPDU_SUBFRAME_DEFAULT 32
 144
 145 #define IEEE80211_SEQ_SEQ_SHIFT    4
 146 #define IEEE80211_SEQ_MAX          4096
 147 #define IEEE80211_WEP_IVLEN        3
 148 #define IEEE80211_WEP_KIDLEN       1
 149 #define IEEE80211_WEP_CRCLEN       4
 150 #define IEEE80211_MAX_MPDU_LEN     (3840 + FCS_LEN +            \
 151                                     (IEEE80211_WEP_IVLEN +      \
 152                                      IEEE80211_WEP_KIDLEN +     \
 153                                      IEEE80211_WEP_CRCLEN))
 154
 155 /* return whether a bit at index _n in bitmap _bm is set
 156  * _sz is the size of the bitmap  */
 157 #define ATH_BA_ISSET(_bm, _n)  (((_n) < (WME_BA_BMP_SIZE)) &&           \
 158                                 ((_bm)[(_n) >> 5] & (1 << ((_n) & 31))))
 159
 160 /* return block-ack bitmap index given sequence and starting sequence */
 161 #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1))
 162
 163 /* return the seqno for _start + _offset */
 164 #define ATH_BA_INDEX2SEQ(_seq, _offset) (((_seq) + (_offset)) & (IEEE80211_SEQ_MAX - 1))
 165
 166 /* returns delimiter padding required given the packet length */
 167 #define ATH_AGGR_GET_NDELIM(_len)                                       \
 168        (((_len) >= ATH_AGGR_MINPLEN) ? 0 :                             \
 169         DIV_ROUND_UP(ATH_AGGR_MINPLEN - (_len), ATH_AGGR_DELIM_SZ))
 170
 171 #define BAW_WITHIN(_start, _bawsz, _seqno) \
 172         ((((_seqno) - (_start)) & 4095) < (_bawsz))
 173
 174 #define ATH_AN_2_TID(_an, _tidno)  (&(_an)->tid[(_tidno)])
 175
 176 #define ATH_TX_COMPLETE_POLL_INT        1000
 177
 178 enum ATH_AGGR_STATUS {
 179         ATH_AGGR_DONE,
 180         ATH_AGGR_BAW_CLOSED,
 181         ATH_AGGR_LIMITED,
 182 };
 183
 184 #define ATH_TXFIFO_DEPTH 8
 185 struct ath_txq {
 186         int mac80211_qnum; /* mac80211 queue number, -1 means not mac80211 Q */
 187         u32 axq_qnum; /* ath9k hardware queue number */
 188         void *axq_link;
 189         struct list_head axq_q;
 190         spinlock_t axq_lock;
 191         u32 axq_depth;
 192         u32 axq_ampdu_depth;
 193         bool stopped;
 194         bool axq_tx_inprogress;
 195         struct list_head axq_acq;
 196         struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
 197         u8 txq_headidx;
 198         u8 txq_tailidx;
 199         int pending_frames;
 200         struct sk_buff_head complete_q;
 201 };
 202
 203 struct ath_atx_ac {
 204         struct ath_txq *txq;
 205         int sched;
 206         struct list_head list;
 207         struct list_head tid_q;
 208         bool clear_ps_filter;
 209 };
 210
 211 struct ath_frame_info {
 212         struct ath_buf *bf;
 213         int framelen;
 214         enum ath9k_key_type keytype;
 215         u8 keyix;
 216         u8 retries;
 217         u8 rtscts_rate;
 218 };
 219
 220 struct ath_buf_state {
 221         u8 bf_type;
 222         u8 bfs_paprd;
 223         u8 ndelim;
 224         u16 seqno;
 225         unsigned long bfs_paprd_timestamp;
 226 };
 227
 228 struct ath_buf {
 229         struct list_head list;
 230         struct ath_buf *bf_lastbf;      /* last buf of this unit (a frame or
 231                                            an aggregate) */
 232         struct ath_buf *bf_next;        /* next subframe in the aggregate */
 233         struct sk_buff *bf_mpdu;        /* enclosing frame structure */
 234         void *bf_desc;                  /* virtual addr of desc */
 235         dma_addr_t bf_daddr;            /* physical addr of desc */
 236         dma_addr_t bf_buf_addr; /* physical addr of data buffer, for DMA */
 237         bool bf_stale;
 238         struct ath_buf_state bf_state;
 239 };
 240
 241 struct ath_atx_tid {
 242         struct list_head list;
 243         struct sk_buff_head buf_q;
 244         struct ath_node *an;
 245         struct ath_atx_ac *ac;
 246         unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
 247         int bar_index;
 248         u16 seq_start;
 249         u16 seq_next;
 250         u16 baw_size;
 251         int tidno;
 252         int baw_head;   /* first un-acked tx buffer */
 253         int baw_tail;   /* next unused tx buffer slot */
 254         int sched;
 255         int paused;
 256         u8 state;
 257 };
 258
 259 struct ath_node {
 260 #ifdef CONFIG_ATH9K_DEBUGFS
 261         struct list_head list; /* for sc->nodes */
 262 #endif
 263         struct ieee80211_sta *sta; /* station struct we're part of */
 264         struct ieee80211_vif *vif; /* interface with which we're associated */
 265         struct ath_atx_tid tid[WME_NUM_TID];
 266         struct ath_atx_ac ac[WME_NUM_AC];
 267         int ps_key;
 268
 269         u16 maxampdu;
 270         u8 mpdudensity;
 271
 272         bool sleeping;
 273 };
 274
 275 #define AGGR_CLEANUP         BIT(1)
 276 #define AGGR_ADDBA_COMPLETE  BIT(2)
 277 #define AGGR_ADDBA_PROGRESS  BIT(3)
 278
 279 struct ath_tx_control {
 280         struct ath_txq *txq;
 281         struct ath_node *an;
 282         u8 paprd;
 283 };
 284
 285 #define ATH_TX_ERROR        0x01
 286
 287 /**
 288  * @txq_map:  Index is mac80211 queue number.  This is
 289  *  not necessarily the same as the hardware queue number
 290  *  (axq_qnum).
 291  */
 292 struct ath_tx {
 293         u16 seq_no;
 294         u32 txqsetup;
 295         spinlock_t txbuflock;
 296         struct list_head txbuf;
 297         struct ath_txq txq[ATH9K_NUM_TX_QUEUES];
 298         struct ath_descdma txdma;
 299         struct ath_txq *txq_map[WME_NUM_AC];
 300 };
 301
 302 struct ath_rx_edma {
 303         struct sk_buff_head rx_fifo;
 304         u32 rx_fifo_hwsize;
 305 };
 306
 307 struct ath_rx {
 308         u8 defant;
 309         u8 rxotherant;
 310         u32 *rxlink;
 311         u32 num_pkts;
 312         unsigned int rxfilter;
 313         spinlock_t rxbuflock;
 314         struct list_head rxbuf;
 315         struct ath_descdma rxdma;
 316         struct ath_buf *rx_bufptr;
 317         struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX];
 318
 319         struct sk_buff *frag;
 320 };
 321
 322 int ath_startrecv(struct ath_softc *sc);
 323 bool ath_stoprecv(struct ath_softc *sc);
 324 void ath_flushrecv(struct ath_softc *sc);
 325 u32 ath_calcrxfilter(struct ath_softc *sc);
 326 int ath_rx_init(struct ath_softc *sc, int nbufs);
 327 void ath_rx_cleanup(struct ath_softc *sc);
 328 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp);
 329 struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype);
 330 void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq);
 331 void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq);
 332 void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq);
 333 void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq);
 334 bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx);
 335 void ath_draintxq(struct ath_softc *sc,
 336                      struct ath_txq *txq, bool retry_tx);
 337 void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an);
 338 void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an);
 339 void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq);
 340 int ath_tx_init(struct ath_softc *sc, int nbufs);
 341 void ath_tx_cleanup(struct ath_softc *sc);
 342 int ath_txq_update(struct ath_softc *sc, int qnum,
 343                    struct ath9k_tx_queue_info *q);
 344 int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
 345                  struct ath_tx_control *txctl);
 346 void ath_tx_tasklet(struct ath_softc *sc);
 347 void ath_tx_edma_tasklet(struct ath_softc *sc);
 348 int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
 349                       u16 tid, u16 *ssn);
 350 void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
 351 void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
 352
 353 void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an);
 354 void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
 355                        struct ath_node *an);
 356
 357 /********/
 358 /* VIFs */
 359 /********/
 360
 361 struct ath_vif {
 362         int av_bslot;
 363         bool is_bslot_active, primary_sta_vif;
 364         __le64 tsf_adjust; /* TSF adjustment for staggered beacons */
 365         struct ath_buf *av_bcbuf;
 366 };
 367
 368 /*******************/
 369 /* Beacon Handling */
 370 /*******************/
 371
 372 /*
 373  * Regardless of the number of beacons we stagger, (i.e. regardless of the
 374  * number of BSSIDs) if a given beacon does not go out even after waiting this
 375  * number of beacon intervals, the game's up.
 376  */
 377 #define BSTUCK_THRESH                   9
 378 #define ATH_BCBUF                       8
 379 #define ATH_DEFAULT_BINTVAL             100 /* TU */
 380 #define ATH_DEFAULT_BMISS_LIMIT         10
 381 #define IEEE80211_MS_TO_TU(x)           (((x) * 1000) / 1024)
 382
 383 struct ath_beacon_config {
 384         int beacon_interval;
 385         u16 listen_interval;
 386         u16 dtim_period;
 387         u16 bmiss_timeout;
 388         u8 dtim_count;
 389 };
 390
 391 struct ath_beacon {
 392         enum {
 393                 OK,             /* no change needed */
 394                 UPDATE,         /* update pending */
 395                 COMMIT          /* beacon sent, commit change */
 396         } updateslot;           /* slot time update fsm */
 397
 398         u32 beaconq;
 399         u32 bmisscnt;
 400         u32 ast_be_xmit;
 401         u32 bc_tstamp;
 402         struct ieee80211_vif *bslot[ATH_BCBUF];
 403         int slottime;
 404         int slotupdate;
 405         struct ath9k_tx_queue_info beacon_qi;
 406         struct ath_descdma bdma;
 407         struct ath_txq *cabq;
 408         struct list_head bbuf;
 409
 410         bool tx_processed;
 411         bool tx_last;
 412 };
 413
 414 void ath_beacon_tasklet(unsigned long data);
 415 void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif);
 416 int ath_beacon_alloc(struct ath_softc *sc, struct ieee80211_vif *vif);
 417 void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp);
 418 int ath_beaconq_config(struct ath_softc *sc);
 419 void ath_set_beacon(struct ath_softc *sc);
 420 void ath9k_set_beaconing_status(struct ath_softc *sc, bool status);
 421
 422 /*******************/
 423 /* Link Monitoring */
 424 /*******************/
 425
 426 #define ATH_STA_SHORT_CALINTERVAL 1000    /* 1 second */
 427 #define ATH_AP_SHORT_CALINTERVAL  100     /* 100 ms */
 428 #define ATH_ANI_POLLINTERVAL_OLD  100     /* 100 ms */
 429 #define ATH_ANI_POLLINTERVAL_NEW  1000    /* 1000 ms */
 430 #define ATH_LONG_CALINTERVAL_INT  1000    /* 1000 ms */
 431 #define ATH_LONG_CALINTERVAL      30000   /* 30 seconds */
 432 #define ATH_RESTART_CALINTERVAL   1200000 /* 20 minutes */
 433
 434 #define ATH_PAPRD_TIMEOUT       100 /* msecs */
 435 #define ATH_PLL_WORK_INTERVAL   100
 436
 437 void ath_tx_complete_poll_work(struct work_struct *work);
 438 void ath_reset_work(struct work_struct *work);
 439 void ath_hw_check(struct work_struct *work);
 440 void ath_hw_pll_work(struct work_struct *work);
 441 void ath_rx_poll(unsigned long data);
 442 void ath_start_rx_poll(struct ath_softc *sc, u8 nbeacon);
 443 void ath_paprd_calibrate(struct work_struct *work);
 444 void ath_ani_calibrate(unsigned long data);
 445 void ath_start_ani(struct ath_common *common);
 446 int ath_update_survey_stats(struct ath_softc *sc);
 447 void ath_update_survey_nf(struct ath_softc *sc, int channel);
 448
 449 /**********/
 450 /* BTCOEX */
 451 /**********/
 452
 453 enum bt_op_flags {
 454         BT_OP_PRIORITY_DETECTED,
 455         BT_OP_SCAN,
 456 };
 457
 458 struct ath_btcoex {
 459         bool hw_timer_enabled;
 460         spinlock_t btcoex_lock;
 461         struct timer_list period_timer; /* Timer for BT period */
 462         u32 bt_priority_cnt;
 463         unsigned long bt_priority_time;
 464         unsigned long op_flags;
 465         int bt_stomp_type; /* Types of BT stomping */
 466         u32 btcoex_no_stomp; /* in usec */
 467         u32 btcoex_period; /* in usec */
 468         u32 btscan_no_stomp; /* in usec */
 469         u32 duty_cycle;
 470         u32 bt_wait_time;
 471         struct ath_gen_timer *no_stomp_timer; /* Timer for no BT stomping */
 472         struct ath_mci_profile mci;
 473 };
 474
 475 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 476 int ath9k_init_btcoex(struct ath_softc *sc);
 477 void ath9k_deinit_btcoex(struct ath_softc *sc);
 478 void ath9k_start_btcoex(struct ath_softc *sc);
 479 void ath9k_stop_btcoex(struct ath_softc *sc);
 480 void ath9k_btcoex_timer_resume(struct ath_softc *sc);
 481 void ath9k_btcoex_timer_pause(struct ath_softc *sc);
 482 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status);
 483 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen);
 484 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc);
 485 #else
 486 static inline int ath9k_init_btcoex(struct ath_softc *sc)
 487 {
 488         return 0;
 489 }
 490 static inline void ath9k_deinit_btcoex(struct ath_softc *sc)
 491 {
 492 }
 493 static inline void ath9k_start_btcoex(struct ath_softc *sc)
 494 {
 495 }
 496 static inline void ath9k_stop_btcoex(struct ath_softc *sc)
 497 {
 498 }
 499 static inline void ath9k_btcoex_handle_interrupt(struct ath_softc *sc,
 500                                                  u32 status)
 501 {
 502 }
 503 static inline u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc,
 504                                           u32 max_4ms_framelen)
 505 {
 506         return 0;
 507 }
 508 static inline void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
 509 {
 510 }
 511 #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
 512
 513 struct ath9k_wow_pattern {
 514         u8 pattern_bytes[MAX_PATTERN_SIZE];
 515         u8 mask_bytes[MAX_PATTERN_SIZE];
 516         u32 pattern_len;
 517 };
 518
 519 /********************/
 520 /*   LED Control    */
 521 /********************/
 522
 523 #define ATH_LED_PIN_DEF                 1
 524 #define ATH_LED_PIN_9287                8
 525 #define ATH_LED_PIN_9300                10
 526 #define ATH_LED_PIN_9485                6
 527 #define ATH_LED_PIN_9462                4
 528
 529 #ifdef CONFIG_MAC80211_LEDS
 530 void ath_init_leds(struct ath_softc *sc);
 531 void ath_deinit_leds(struct ath_softc *sc);
 532 #else
 533 static inline void ath_init_leds(struct ath_softc *sc)
 534 {
 535 }
 536
 537 static inline void ath_deinit_leds(struct ath_softc *sc)
 538 {
 539 }
 540 #endif
 541
 542 /*******************************/
 543 /* Antenna diversity/combining */
 544 /*******************************/
 545
 546 #define ATH_ANT_RX_CURRENT_SHIFT 4
 547 #define ATH_ANT_RX_MAIN_SHIFT 2
 548 #define ATH_ANT_RX_MASK 0x3
 549
 550 #define ATH_ANT_DIV_COMB_SHORT_SCAN_INTR 50
 551 #define ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT 0x100
 552 #define ATH_ANT_DIV_COMB_MAX_PKTCOUNT 0x200
 553 #define ATH_ANT_DIV_COMB_INIT_COUNT 95
 554 #define ATH_ANT_DIV_COMB_MAX_COUNT 100
 555 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30
 556 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20
 557
 558 #define ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA -1
 559 #define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4
 560 #define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2
 561 #define ATH_ANT_DIV_COMB_LNA1_DELTA_LOW 2
 562
 563 enum ath9k_ant_div_comb_lna_conf {
 564         ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2,
 565         ATH_ANT_DIV_COMB_LNA2,
 566         ATH_ANT_DIV_COMB_LNA1,
 567         ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2,
 568 };
 569
 570 struct ath_ant_comb {
 571         u16 count;
 572         u16 total_pkt_count;
 573         bool scan;
 574         bool scan_not_start;
 575         int main_total_rssi;
 576         int alt_total_rssi;
 577         int alt_recv_cnt;
 578         int main_recv_cnt;
 579         int rssi_lna1;
 580         int rssi_lna2;
 581         int rssi_add;
 582         int rssi_sub;
 583         int rssi_first;
 584         int rssi_second;
 585         int rssi_third;
 586         bool alt_good;
 587         int quick_scan_cnt;
 588         int main_conf;
 589         enum ath9k_ant_div_comb_lna_conf first_quick_scan_conf;
 590         enum ath9k_ant_div_comb_lna_conf second_quick_scan_conf;
 591         int first_bias;
 592         int second_bias;
 593         bool first_ratio;
 594         bool second_ratio;
 595         unsigned long scan_start_time;
 596 };
 597
 598 void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs);
 599 void ath_ant_comb_update(struct ath_softc *sc);
 600
 601 /********************/
 602 /* Main driver core */
 603 /********************/
 604
 605 /*
 606  * Default cache line size, in bytes.
 607  * Used when PCI device not fully initialized by bootrom/BIOS
 608 */
 609 #define DEFAULT_CACHELINE       32
 610 #define ATH_REGCLASSIDS_MAX     10
 611 #define ATH_CABQ_READY_TIME     80      /* % of beacon interval */
 612 #define ATH_MAX_SW_RETRIES      30
 613 #define ATH_CHAN_MAX            255
 614
 615 #define ATH_TXPOWER_MAX         100     /* .5 dBm units */
 616 #define ATH_RATE_DUMMY_MARKER   0
 617
 618 enum sc_op_flags {
 619         SC_OP_INVALID,
 620         SC_OP_BEACONS,
 621         SC_OP_RXFLUSH,
 622         SC_OP_TSF_RESET,
 623         SC_OP_ANI_RUN,
 624         SC_OP_PRIM_STA_VIF,
 625         SC_OP_HW_RESET,
 626 };
 627
 628 /* Powersave flags */
 629 #define PS_WAIT_FOR_BEACON        BIT(0)
 630 #define PS_WAIT_FOR_CAB           BIT(1)
 631 #define PS_WAIT_FOR_PSPOLL_DATA   BIT(2)
 632 #define PS_WAIT_FOR_TX_ACK        BIT(3)
 633 #define PS_BEACON_SYNC            BIT(4)
 634
 635 struct ath_rate_table;
 636
 637 struct ath9k_vif_iter_data {
 638         const u8 *hw_macaddr; /* phy's hardware address, set
 639                                * before starting iteration for
 640                                * valid bssid mask.
 641                                */
 642         u8 mask[ETH_ALEN]; /* bssid mask */
 643         int naps;      /* number of AP vifs */
 644         int nmeshes;   /* number of mesh vifs */
 645         int nstations; /* number of station vifs */
 646         int nwds;      /* number of WDS vifs */
 647         int nadhocs;   /* number of adhoc vifs */
 648 };
 649
 650 struct ath_softc {
 651         struct ieee80211_hw *hw;
 652         struct device *dev;
 653
 654         struct survey_info *cur_survey;
 655         struct survey_info survey[ATH9K_NUM_CHANNELS];
 656
 657         struct tasklet_struct intr_tq;
 658         struct tasklet_struct bcon_tasklet;
 659         struct ath_hw *sc_ah;
 660         void __iomem *mem;
 661         int irq;
 662         spinlock_t sc_serial_rw;
 663         spinlock_t sc_pm_lock;
 664         spinlock_t sc_pcu_lock;
 665         struct mutex mutex;
 666         struct work_struct paprd_work;
 667         struct work_struct hw_check_work;
 668         struct work_struct hw_reset_work;
 669         struct completion paprd_complete;
 670
 671         unsigned int hw_busy_count;
 672         unsigned long sc_flags;
 673
 674         u32 intrstatus;
 675         u16 ps_flags; /* PS_* */
 676         u16 curtxpow;
 677         bool ps_enabled;
 678         bool ps_idle;
 679         short nbcnvifs;
 680         short nvifs;
 681         unsigned long ps_usecount;
 682
 683         struct ath_config config;
 684         struct ath_rx rx;
 685         struct ath_tx tx;
 686         struct ath_beacon beacon;
 687         struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
 688
 689 #ifdef CONFIG_MAC80211_LEDS
 690         bool led_registered;
 691         char led_name[32];
 692         struct led_classdev led_cdev;
 693 #endif
 694
 695         struct ath9k_hw_cal_data caldata;
 696         int last_rssi;
 697
 698 #ifdef CONFIG_ATH9K_DEBUGFS
 699         struct ath9k_debug debug;
 700         spinlock_t nodes_lock;
 701         struct list_head nodes; /* basically, stations */
 702         unsigned int tx_complete_poll_work_seen;
 703 #endif
 704         struct ath_beacon_config cur_beacon_conf;
 705         struct delayed_work tx_complete_work;
 706         struct delayed_work hw_pll_work;
 707         struct timer_list rx_poll_timer;
 708
 709 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 710         struct ath_btcoex btcoex;
 711         struct ath_mci_coex mci_coex;
 712         struct work_struct mci_work;
 713 #endif
 714
 715         struct ath_descdma txsdma;
 716
 717         struct ath_ant_comb ant_comb;
 718         u8 ant_tx, ant_rx;
 719         struct dfs_pattern_detector *dfs_detector;
 720         u32 wow_enabled;
 721
 722 #ifdef CONFIG_PM_SLEEP
 723         atomic_t wow_got_bmiss_intr;
 724         atomic_t wow_sleep_proc_intr; /* in the middle of WoW sleep ? */
 725         u32 wow_intr_before_sleep;
 726 #endif
 727 };
 728
 729 void ath9k_tasklet(unsigned long data);
 730 int ath_cabq_update(struct ath_softc *);
 731
 732 static inline void ath_read_cachesize(struct ath_common *common, int *csz)
 733 {
 734         common->bus_ops->read_cachesize(common, csz);
 735 }
 736
 737 extern struct ieee80211_ops ath9k_ops;
 738 extern int ath9k_modparam_nohwcrypt;
 739 extern int led_blink;
 740 extern bool is_ath9k_unloaded;
 741
 742 u8 ath9k_parse_mpdudensity(u8 mpdudensity);
 743 irqreturn_t ath_isr(int irq, void *dev);
 744 int ath9k_init_device(u16 devid, struct ath_softc *sc,
 745                     const struct ath_bus_ops *bus_ops);
 746 void ath9k_deinit_device(struct ath_softc *sc);
 747 void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw);
 748 void ath9k_reload_chainmask_settings(struct ath_softc *sc);
 749
 750 bool ath9k_uses_beacons(int type);
 751
 752 #ifdef CONFIG_ATH9K_PCI
 753 int ath_pci_init(void);
 754 void ath_pci_exit(void);
 755 #else
 756 static inline int ath_pci_init(void) { return 0; };
 757 static inline void ath_pci_exit(void) {};
 758 #endif
 759
 760 #ifdef CONFIG_ATH9K_AHB
 761 int ath_ahb_init(void);
 762 void ath_ahb_exit(void);
 763 #else
 764 static inline int ath_ahb_init(void) { return 0; };
 765 static inline void ath_ahb_exit(void) {};
 766 #endif
 767
 768 void ath9k_ps_wakeup(struct ath_softc *sc);
 769 void ath9k_ps_restore(struct ath_softc *sc);
 770
 771 u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate);
 772
 773 void ath_start_rfkill_poll(struct ath_softc *sc);
 774 extern void ath9k_rfkill_poll_state(struct ieee80211_hw *hw);
 775 void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
 776                                struct ieee80211_vif *vif,
 777                                struct ath9k_vif_iter_data *iter_data);
 778
 779 #endif /* ATH9K_H */