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