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 #include <linux/time.h>
  26 #include <linux/hw_random.h>
  27
  28 #include "common.h"
  29 #include "debug.h"
  30 #include "mci.h"
  31 #include "dfs.h"
  32
  33 struct ath_node;
  34 struct ath_vif;
  35
  36 extern struct ieee80211_ops ath9k_ops;
  37 extern int ath9k_modparam_nohwcrypt;
  38 extern int ath9k_led_blink;
  39 extern bool is_ath9k_unloaded;
  40 extern int ath9k_use_chanctx;
  41
  42 /*************************/
  43 /* Descriptor Management */
  44 /*************************/
  45
  46 #define ATH_TXSTATUS_RING_SIZE 512
  47
  48 /* Macro to expand scalars to 64-bit objects */
  49 #define ito64(x) (sizeof(x) == 1) ?                     \
  50         (((unsigned long long int)(x)) & (0xff)) :      \
  51         (sizeof(x) == 2) ?                              \
  52         (((unsigned long long int)(x)) & 0xffff) :      \
  53         ((sizeof(x) == 4) ?                             \
  54          (((unsigned long long int)(x)) & 0xffffffff) : \
  55          (unsigned long long int)(x))
  56
  57 #define ATH_TXBUF_RESET(_bf) do {                               \
  58                 (_bf)->bf_lastbf = NULL;                        \
  59                 (_bf)->bf_next = NULL;                          \
  60                 memset(&((_bf)->bf_state), 0,                   \
  61                        sizeof(struct ath_buf_state));           \
  62         } while (0)
  63
  64 #define DS2PHYS(_dd, _ds)                                               \
  65         ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
  66 #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0)
  67 #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096)
  68
  69 struct ath_descdma {
  70         void *dd_desc;
  71         dma_addr_t dd_desc_paddr;
  72         u32 dd_desc_len;
  73 };
  74
  75 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
  76                       struct list_head *head, const char *name,
  77                       int nbuf, int ndesc, bool is_tx);
  78
  79 /***********/
  80 /* RX / TX */
  81 /***********/
  82
  83 #define ATH_TXQ_SETUP(sc, i) ((sc)->tx.txqsetup & (1<<i))
  84
  85 /* increment with wrap-around */
  86 #define INCR(_l, _sz)   do {                    \
  87                 (_l)++;                         \
  88                 (_l) &= ((_sz) - 1);            \
  89         } while (0)
  90
  91 #define ATH_RXBUF               512
  92 #define ATH_TXBUF               512
  93 #define ATH_TXBUF_RESERVE       5
  94 #define ATH_TXMAXTRY            13
  95 #define ATH_MAX_SW_RETRIES      30
  96
  97 #define TID_TO_WME_AC(_tid)                             \
  98         ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE :   \
  99          (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK :   \
 100          (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI :   \
 101          IEEE80211_AC_VO)
 102
 103 #define ATH_AGGR_DELIM_SZ          4
 104 #define ATH_AGGR_MINPLEN           256 /* in bytes, minimum packet length */
 105 /* number of delimiters for encryption padding */
 106 #define ATH_AGGR_ENCRYPTDELIM      10
 107 /* minimum h/w qdepth to be sustained to maximize aggregation */
 108 #define ATH_AGGR_MIN_QDEPTH        2
 109 /* minimum h/w qdepth for non-aggregated traffic */
 110 #define ATH_NON_AGGR_MIN_QDEPTH    8
 111 #define ATH_TX_COMPLETE_POLL_INT   1000
 112 #define ATH_TXFIFO_DEPTH           8
 113 #define ATH_TX_ERROR               0x01
 114
 115 /* Stop tx traffic 1ms before the GO goes away */
 116 #define ATH_P2P_PS_STOP_TIME       1000
 117
 118 #define IEEE80211_SEQ_SEQ_SHIFT    4
 119 #define IEEE80211_SEQ_MAX          4096
 120 #define IEEE80211_WEP_IVLEN        3
 121 #define IEEE80211_WEP_KIDLEN       1
 122 #define IEEE80211_WEP_CRCLEN       4
 123 #define IEEE80211_MAX_MPDU_LEN     (3840 + FCS_LEN +            \
 124                                     (IEEE80211_WEP_IVLEN +      \
 125                                      IEEE80211_WEP_KIDLEN +     \
 126                                      IEEE80211_WEP_CRCLEN))
 127
 128 /* return whether a bit at index _n in bitmap _bm is set
 129  * _sz is the size of the bitmap  */
 130 #define ATH_BA_ISSET(_bm, _n)  (((_n) < (WME_BA_BMP_SIZE)) &&           \
 131                                 ((_bm)[(_n) >> 5] & (1 << ((_n) & 31))))
 132
 133 /* return block-ack bitmap index given sequence and starting sequence */
 134 #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1))
 135
 136 /* return the seqno for _start + _offset */
 137 #define ATH_BA_INDEX2SEQ(_seq, _offset) (((_seq) + (_offset)) & (IEEE80211_SEQ_MAX - 1))
 138
 139 /* returns delimiter padding required given the packet length */
 140 #define ATH_AGGR_GET_NDELIM(_len)                                       \
 141        (((_len) >= ATH_AGGR_MINPLEN) ? 0 :                             \
 142         DIV_ROUND_UP(ATH_AGGR_MINPLEN - (_len), ATH_AGGR_DELIM_SZ))
 143
 144 #define BAW_WITHIN(_start, _bawsz, _seqno) \
 145         ((((_seqno) - (_start)) & 4095) < (_bawsz))
 146
 147 #define ATH_AN_2_TID(_an, _tidno) ath_node_to_tid(_an, _tidno)
 148
 149 #define IS_HT_RATE(rate)   (rate & 0x80)
 150 #define IS_CCK_RATE(rate)  ((rate >= 0x18) && (rate <= 0x1e))
 151 #define IS_OFDM_RATE(rate) ((rate >= 0x8) && (rate <= 0xf))
 152
 153 enum {
 154        WLAN_RC_PHY_OFDM,
 155        WLAN_RC_PHY_CCK,
 156 };
 157
 158 struct ath_txq {
 159         int mac80211_qnum; /* mac80211 queue number, -1 means not mac80211 Q */
 160         u32 axq_qnum; /* ath9k hardware queue number */
 161         void *axq_link;
 162         struct list_head axq_q;
 163         spinlock_t axq_lock;
 164         u32 axq_depth;
 165         u32 axq_ampdu_depth;
 166         bool axq_tx_inprogress;
 167         struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
 168         u8 txq_headidx;
 169         u8 txq_tailidx;
 170         int pending_frames;
 171         struct sk_buff_head complete_q;
 172 };
 173
 174 struct ath_frame_info {
 175         struct ath_buf *bf;
 176         u16 framelen;
 177         s8 txq;
 178         u8 keyix;
 179         u8 rtscts_rate;
 180         u8 retries : 7;
 181         u8 baw_tracked : 1;
 182         u8 tx_power;
 183         enum ath9k_key_type keytype:2;
 184 };
 185
 186 struct ath_rxbuf {
 187         struct list_head list;
 188         struct sk_buff *bf_mpdu;
 189         void *bf_desc;
 190         dma_addr_t bf_daddr;
 191         dma_addr_t bf_buf_addr;
 192 };
 193
 194 /**
 195  * enum buffer_type - Buffer type flags
 196  *
 197  * @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX)
 198  * @BUF_AGGR: Indicates whether the buffer can be aggregated
 199  *      (used in aggregation scheduling)
 200  */
 201 enum buffer_type {
 202         BUF_AMPDU               = BIT(0),
 203         BUF_AGGR                = BIT(1),
 204 };
 205
 206 #define bf_isampdu(bf)          (bf->bf_state.bf_type & BUF_AMPDU)
 207 #define bf_isaggr(bf)           (bf->bf_state.bf_type & BUF_AGGR)
 208
 209 struct ath_buf_state {
 210         u8 bf_type;
 211         u8 bfs_paprd;
 212         u8 ndelim;
 213         bool stale;
 214         u16 seqno;
 215         unsigned long bfs_paprd_timestamp;
 216 };
 217
 218 struct ath_buf {
 219         struct list_head list;
 220         struct ath_buf *bf_lastbf;      /* last buf of this unit (a frame or
 221                                            an aggregate) */
 222         struct ath_buf *bf_next;        /* next subframe in the aggregate */
 223         struct sk_buff *bf_mpdu;        /* enclosing frame structure */
 224         void *bf_desc;                  /* virtual addr of desc */
 225         dma_addr_t bf_daddr;            /* physical addr of desc */
 226         dma_addr_t bf_buf_addr; /* physical addr of data buffer, for DMA */
 227         struct ieee80211_tx_rate rates[4];
 228         struct ath_buf_state bf_state;
 229 };
 230
 231 struct ath_atx_tid {
 232         struct list_head list;
 233         struct sk_buff_head retry_q;
 234         struct ath_node *an;
 235         struct ath_txq *txq;
 236         unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
 237         u16 seq_start;
 238         u16 seq_next;
 239         u16 baw_size;
 240         u8 tidno;
 241         int baw_head;   /* first un-acked tx buffer */
 242         int baw_tail;   /* next unused tx buffer slot */
 243
 244         s8 bar_index;
 245         bool active;
 246         bool clear_ps_filter;
 247         bool has_queued;
 248 };
 249
 250 struct ath_node {
 251         struct ath_softc *sc;
 252         struct ieee80211_sta *sta; /* station struct we're part of */
 253         struct ieee80211_vif *vif; /* interface with which we're associated */
 254
 255         u16 maxampdu;
 256         u8 mpdudensity;
 257         s8 ps_key;
 258
 259         bool sleeping;
 260         bool no_ps_filter;
 261
 262 #ifdef CONFIG_ATH9K_STATION_STATISTICS
 263         struct ath_rx_rate_stats rx_rate_stats;
 264 #endif
 265         u8 key_idx[4];
 266
 267         u32 ackto;
 268         struct list_head list;
 269 };
 270
 271 struct ath_tx_control {
 272         struct ath_txq *txq;
 273         struct ath_node *an;
 274         struct ieee80211_sta *sta;
 275         u8 paprd;
 276 };
 277
 278
 279 /**
 280  * @txq_map:  Index is mac80211 queue number.  This is
 281  *  not necessarily the same as the hardware queue number
 282  *  (axq_qnum).
 283  */
 284 struct ath_tx {
 285         u32 txqsetup;
 286         spinlock_t txbuflock;
 287         struct list_head txbuf;
 288         struct ath_txq txq[ATH9K_NUM_TX_QUEUES];
 289         struct ath_descdma txdma;
 290         struct ath_txq *txq_map[IEEE80211_NUM_ACS];
 291         struct ath_txq *uapsdq;
 292         u16 max_aggr_framelen[IEEE80211_NUM_ACS][4][32];
 293 };
 294
 295 struct ath_rx_edma {
 296         struct sk_buff_head rx_fifo;
 297         u32 rx_fifo_hwsize;
 298 };
 299
 300 struct ath_rx {
 301         u8 defant;
 302         u8 rxotherant;
 303         bool discard_next;
 304         u32 *rxlink;
 305         u32 num_pkts;
 306         struct list_head rxbuf;
 307         struct ath_descdma rxdma;
 308         struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX];
 309
 310         struct ath_rxbuf *buf_hold;
 311         struct sk_buff *frag;
 312
 313         u32 ampdu_ref;
 314 };
 315
 316 /*******************/
 317 /* Channel Context */
 318 /*******************/
 319
 320 struct ath_chanctx {
 321         struct cfg80211_chan_def chandef;
 322         struct list_head vifs;
 323         struct list_head acq[IEEE80211_NUM_ACS];
 324         int hw_queue_base;
 325
 326         /* do not dereference, use for comparison only */
 327         struct ieee80211_vif *primary_sta;
 328
 329         struct ath_beacon_config beacon;
 330         struct ath9k_hw_cal_data caldata;
 331         struct timespec tsf_ts;
 332         u64 tsf_val;
 333         u32 last_beacon;
 334
 335         int flush_timeout;
 336         u16 txpower;
 337         u16 cur_txpower;
 338         bool offchannel;
 339         bool stopped;
 340         bool active;
 341         bool assigned;
 342         bool switch_after_beacon;
 343
 344         short nvifs;
 345         short nvifs_assigned;
 346         unsigned int rxfilter;
 347 };
 348
 349 enum ath_chanctx_event {
 350         ATH_CHANCTX_EVENT_BEACON_PREPARE,
 351         ATH_CHANCTX_EVENT_BEACON_SENT,
 352         ATH_CHANCTX_EVENT_TSF_TIMER,
 353         ATH_CHANCTX_EVENT_BEACON_RECEIVED,
 354         ATH_CHANCTX_EVENT_AUTHORIZED,
 355         ATH_CHANCTX_EVENT_SWITCH,
 356         ATH_CHANCTX_EVENT_ASSIGN,
 357         ATH_CHANCTX_EVENT_UNASSIGN,
 358         ATH_CHANCTX_EVENT_CHANGE,
 359         ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL,
 360 };
 361
 362 enum ath_chanctx_state {
 363         ATH_CHANCTX_STATE_IDLE,
 364         ATH_CHANCTX_STATE_WAIT_FOR_BEACON,
 365         ATH_CHANCTX_STATE_WAIT_FOR_TIMER,
 366         ATH_CHANCTX_STATE_SWITCH,
 367         ATH_CHANCTX_STATE_FORCE_ACTIVE,
 368 };
 369
 370 struct ath_chanctx_sched {
 371         bool beacon_pending;
 372         bool beacon_adjust;
 373         bool offchannel_pending;
 374         bool wait_switch;
 375         bool force_noa_update;
 376         bool extend_absence;
 377         bool mgd_prepare_tx;
 378         enum ath_chanctx_state state;
 379         u8 beacon_miss;
 380
 381         u32 next_tbtt;
 382         u32 switch_start_time;
 383         unsigned int offchannel_duration;
 384         unsigned int channel_switch_time;
 385
 386         /* backup, in case the hardware timer fails */
 387         struct timer_list timer;
 388 };
 389
 390 enum ath_offchannel_state {
 391         ATH_OFFCHANNEL_IDLE,
 392         ATH_OFFCHANNEL_PROBE_SEND,
 393         ATH_OFFCHANNEL_PROBE_WAIT,
 394         ATH_OFFCHANNEL_SUSPEND,
 395         ATH_OFFCHANNEL_ROC_START,
 396         ATH_OFFCHANNEL_ROC_WAIT,
 397         ATH_OFFCHANNEL_ROC_DONE,
 398 };
 399
 400 enum ath_roc_complete_reason {
 401         ATH_ROC_COMPLETE_EXPIRE,
 402         ATH_ROC_COMPLETE_ABORT,
 403         ATH_ROC_COMPLETE_CANCEL,
 404 };
 405
 406 struct ath_offchannel {
 407         struct ath_chanctx chan;
 408         struct timer_list timer;
 409         struct cfg80211_scan_request *scan_req;
 410         struct ieee80211_vif *scan_vif;
 411         int scan_idx;
 412         enum ath_offchannel_state state;
 413         struct ieee80211_channel *roc_chan;
 414         struct ieee80211_vif *roc_vif;
 415         int roc_duration;
 416         int duration;
 417 };
 418
 419 static inline struct ath_atx_tid *
 420 ath_node_to_tid(struct ath_node *an, u8 tidno)
 421 {
 422         struct ieee80211_sta *sta = an->sta;
 423         struct ieee80211_vif *vif = an->vif;
 424         struct ieee80211_txq *txq;
 425
 426         BUG_ON(!vif);
 427         if (sta)
 428                 txq = sta->txq[tidno % ARRAY_SIZE(sta->txq)];
 429         else
 430                 txq = vif->txq;
 431
 432         return (struct ath_atx_tid *) txq->drv_priv;
 433 }
 434
 435 #define case_rtn_string(val) case val: return #val
 436
 437 #define ath_for_each_chanctx(_sc, _ctx)                             \
 438         for (ctx = &sc->chanctx[0];                                 \
 439              ctx <= &sc->chanctx[ARRAY_SIZE(sc->chanctx) - 1];      \
 440              ctx++)
 441
 442 void ath_chanctx_init(struct ath_softc *sc);
 443 void ath_chanctx_set_channel(struct ath_softc *sc, struct ath_chanctx *ctx,
 444                              struct cfg80211_chan_def *chandef);
 445
 446 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
 447
 448 static inline struct ath_chanctx *
 449 ath_chanctx_get(struct ieee80211_chanctx_conf *ctx)
 450 {
 451         struct ath_chanctx **ptr = (void *) ctx->drv_priv;
 452         return *ptr;
 453 }
 454
 455 bool ath9k_is_chanctx_enabled(void);
 456 void ath9k_fill_chanctx_ops(void);
 457 void ath9k_init_channel_context(struct ath_softc *sc);
 458 void ath9k_offchannel_init(struct ath_softc *sc);
 459 void ath9k_deinit_channel_context(struct ath_softc *sc);
 460 int ath9k_init_p2p(struct ath_softc *sc);
 461 void ath9k_deinit_p2p(struct ath_softc *sc);
 462 void ath9k_p2p_remove_vif(struct ath_softc *sc,
 463                           struct ieee80211_vif *vif);
 464 void ath9k_p2p_beacon_sync(struct ath_softc *sc);
 465 void ath9k_p2p_bss_info_changed(struct ath_softc *sc,
 466                                 struct ieee80211_vif *vif);
 467 void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp,
 468                           struct sk_buff *skb);
 469 void ath9k_p2p_ps_timer(void *priv);
 470 void ath9k_chanctx_wake_queues(struct ath_softc *sc, struct ath_chanctx *ctx);
 471 void ath9k_chanctx_stop_queues(struct ath_softc *sc, struct ath_chanctx *ctx);
 472 void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx);
 473
 474 void ath_chanctx_beacon_recv_ev(struct ath_softc *sc,
 475                                 enum ath_chanctx_event ev);
 476 void ath_chanctx_beacon_sent_ev(struct ath_softc *sc,
 477                                 enum ath_chanctx_event ev);
 478 void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
 479                        enum ath_chanctx_event ev);
 480 void ath_chanctx_set_next(struct ath_softc *sc, bool force);
 481 void ath_offchannel_next(struct ath_softc *sc);
 482 void ath_scan_complete(struct ath_softc *sc, bool abort);
 483 void ath_roc_complete(struct ath_softc *sc,
 484                       enum ath_roc_complete_reason reason);
 485 struct ath_chanctx* ath_is_go_chanctx_present(struct ath_softc *sc);
 486
 487 #else
 488
 489 static inline bool ath9k_is_chanctx_enabled(void)
 490 {
 491         return false;
 492 }
 493 static inline void ath9k_fill_chanctx_ops(void)
 494 {
 495 }
 496 static inline void ath9k_init_channel_context(struct ath_softc *sc)
 497 {
 498 }
 499 static inline void ath9k_offchannel_init(struct ath_softc *sc)
 500 {
 501 }
 502 static inline void ath9k_deinit_channel_context(struct ath_softc *sc)
 503 {
 504 }
 505 static inline void ath_chanctx_beacon_recv_ev(struct ath_softc *sc,
 506                                               enum ath_chanctx_event ev)
 507 {
 508 }
 509 static inline void ath_chanctx_beacon_sent_ev(struct ath_softc *sc,
 510                                               enum ath_chanctx_event ev)
 511 {
 512 }
 513 static inline void ath_chanctx_event(struct ath_softc *sc,
 514                                      struct ieee80211_vif *vif,
 515                                      enum ath_chanctx_event ev)
 516 {
 517 }
 518 static inline int ath9k_init_p2p(struct ath_softc *sc)
 519 {
 520         return 0;
 521 }
 522 static inline void ath9k_deinit_p2p(struct ath_softc *sc)
 523 {
 524 }
 525 static inline void ath9k_p2p_remove_vif(struct ath_softc *sc,
 526                                         struct ieee80211_vif *vif)
 527 {
 528 }
 529 static inline void ath9k_p2p_beacon_sync(struct ath_softc *sc)
 530 {
 531 }
 532 static inline void ath9k_p2p_bss_info_changed(struct ath_softc *sc,
 533                                               struct ieee80211_vif *vif)
 534 {
 535 }
 536 static inline void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp,
 537                                         struct sk_buff *skb)
 538 {
 539 }
 540 static inline void ath9k_p2p_ps_timer(struct ath_softc *sc)
 541 {
 542 }
 543 static inline void ath9k_chanctx_wake_queues(struct ath_softc *sc,
 544                                              struct ath_chanctx *ctx)
 545 {
 546 }
 547 static inline void ath9k_chanctx_stop_queues(struct ath_softc *sc,
 548                                              struct ath_chanctx *ctx)
 549 {
 550 }
 551 static inline void ath_chanctx_check_active(struct ath_softc *sc,
 552                                             struct ath_chanctx *ctx)
 553 {
 554 }
 555
 556 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
 557
 558 void ath_startrecv(struct ath_softc *sc);
 559 bool ath_stoprecv(struct ath_softc *sc);
 560 u32 ath_calcrxfilter(struct ath_softc *sc);
 561 int ath_rx_init(struct ath_softc *sc, int nbufs);
 562 void ath_rx_cleanup(struct ath_softc *sc);
 563 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp);
 564 struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype);
 565 void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq);
 566 void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq);
 567 void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq);
 568 void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq);
 569 bool ath_drain_all_txq(struct ath_softc *sc);
 570 void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq);
 571 void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an);
 572 void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an);
 573 void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq);
 574 void ath_txq_schedule_all(struct ath_softc *sc);
 575 int ath_tx_init(struct ath_softc *sc, int nbufs);
 576 int ath_txq_update(struct ath_softc *sc, int qnum,
 577                    struct ath9k_tx_queue_info *q);
 578 void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop);
 579 void ath_assign_seq(struct ath_common *common, struct sk_buff *skb);
 580 int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
 581                  struct ath_tx_control *txctl);
 582 void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 583                  struct sk_buff *skb);
 584 void ath_tx_tasklet(struct ath_softc *sc);
 585 void ath_tx_edma_tasklet(struct ath_softc *sc);
 586 int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
 587                       u16 tid, u16 *ssn);
 588 void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
 589
 590 void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an);
 591 void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
 592                        struct ath_node *an);
 593 void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
 594                                    struct ieee80211_sta *sta,
 595                                    u16 tids, int nframes,
 596                                    enum ieee80211_frame_release_type reason,
 597                                    bool more_data);
 598 void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue);
 599
 600 /********/
 601 /* VIFs */
 602 /********/
 603
 604 #define P2P_DEFAULT_CTWIN 10
 605
 606 struct ath_vif {
 607         struct list_head list;
 608
 609         u16 seq_no;
 610
 611         /* BSS info */
 612         u8 bssid[ETH_ALEN] __aligned(2);
 613         u16 aid;
 614         bool assoc;
 615
 616         struct ieee80211_vif *vif;
 617         struct ath_node mcast_node;
 618         int av_bslot;
 619         __le64 tsf_adjust; /* TSF adjustment for staggered beacons */
 620         struct ath_buf *av_bcbuf;
 621         struct ath_chanctx *chanctx;
 622
 623         /* P2P Client */
 624         struct ieee80211_noa_data noa;
 625
 626         /* P2P GO */
 627         u8 noa_index;
 628         u32 offchannel_start;
 629         u32 offchannel_duration;
 630
 631         /* These are used for both periodic and one-shot */
 632         u32 noa_start;
 633         u32 noa_duration;
 634         bool periodic_noa;
 635         bool oneshot_noa;
 636 };
 637
 638 struct ath9k_vif_iter_data {
 639         u8 hw_macaddr[ETH_ALEN]; /* address of the first vif */
 640         u8 mask[ETH_ALEN]; /* bssid mask */
 641         bool has_hw_macaddr;
 642         u8 slottime;
 643         bool beacons;
 644
 645         int naps;      /* number of AP vifs */
 646         int nmeshes;   /* number of mesh vifs */
 647         int nstations; /* number of station vifs */
 648         int nwds;      /* number of WDS vifs */
 649         int nadhocs;   /* number of adhoc vifs */
 650         int nocbs;     /* number of OCB vifs */
 651         int nbcnvifs;  /* number of beaconing vifs */
 652         struct ieee80211_vif *primary_beacon_vif;
 653         struct ieee80211_vif *primary_sta;
 654 };
 655
 656 void ath9k_calculate_iter_data(struct ath_softc *sc,
 657                                struct ath_chanctx *ctx,
 658                                struct ath9k_vif_iter_data *iter_data);
 659 void ath9k_calculate_summary_state(struct ath_softc *sc,
 660                                    struct ath_chanctx *ctx);
 661 void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif);
 662
 663 /*******************/
 664 /* Beacon Handling */
 665 /*******************/
 666
 667 /*
 668  * Regardless of the number of beacons we stagger, (i.e. regardless of the
 669  * number of BSSIDs) if a given beacon does not go out even after waiting this
 670  * number of beacon intervals, the game's up.
 671  */
 672 #define BSTUCK_THRESH                   9
 673 #define ATH_BCBUF                       8
 674 #define ATH_DEFAULT_BINTVAL             100 /* TU */
 675 #define ATH_DEFAULT_BMISS_LIMIT         10
 676
 677 #define TSF_TO_TU(_h,_l) \
 678         ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
 679
 680 struct ath_beacon {
 681         enum {
 682                 OK,             /* no change needed */
 683                 UPDATE,         /* update pending */
 684                 COMMIT          /* beacon sent, commit change */
 685         } updateslot;           /* slot time update fsm */
 686
 687         u32 beaconq;
 688         u32 bmisscnt;
 689         struct ieee80211_vif *bslot[ATH_BCBUF];
 690         int slottime;
 691         int slotupdate;
 692         struct ath_descdma bdma;
 693         struct ath_txq *cabq;
 694         struct list_head bbuf;
 695
 696         bool tx_processed;
 697         bool tx_last;
 698 };
 699
 700 void ath9k_beacon_tasklet(unsigned long data);
 701 void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *main_vif,
 702                          bool beacons);
 703 void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
 704 void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
 705 void ath9k_beacon_ensure_primary_slot(struct ath_softc *sc);
 706 void ath9k_set_beacon(struct ath_softc *sc);
 707 bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif);
 708 void ath9k_csa_update(struct ath_softc *sc);
 709
 710 /*******************/
 711 /* Link Monitoring */
 712 /*******************/
 713
 714 #define ATH_STA_SHORT_CALINTERVAL 1000    /* 1 second */
 715 #define ATH_AP_SHORT_CALINTERVAL  100     /* 100 ms */
 716 #define ATH_ANI_POLLINTERVAL_OLD  100     /* 100 ms */
 717 #define ATH_ANI_POLLINTERVAL_NEW  1000    /* 1000 ms */
 718 #define ATH_LONG_CALINTERVAL_INT  1000    /* 1000 ms */
 719 #define ATH_LONG_CALINTERVAL      30000   /* 30 seconds */
 720 #define ATH_RESTART_CALINTERVAL   1200000 /* 20 minutes */
 721 #define ATH_ANI_MAX_SKIP_COUNT    10
 722 #define ATH_PAPRD_TIMEOUT         100 /* msecs */
 723 #define ATH_PLL_WORK_INTERVAL     100
 724
 725 void ath_tx_complete_poll_work(struct work_struct *work);
 726 void ath_reset_work(struct work_struct *work);
 727 bool ath_hw_check(struct ath_softc *sc);
 728 void ath_hw_pll_work(struct work_struct *work);
 729 void ath_paprd_calibrate(struct work_struct *work);
 730 void ath_ani_calibrate(unsigned long data);
 731 void ath_start_ani(struct ath_softc *sc);
 732 void ath_stop_ani(struct ath_softc *sc);
 733 void ath_check_ani(struct ath_softc *sc);
 734 int ath_update_survey_stats(struct ath_softc *sc);
 735 void ath_update_survey_nf(struct ath_softc *sc, int channel);
 736 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type);
 737 void ath_ps_full_sleep(unsigned long data);
 738 void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop,
 739                    bool sw_pending, bool timeout_override);
 740
 741 /**********/
 742 /* BTCOEX */
 743 /**********/
 744
 745 #define ATH_DUMP_BTCOEX(_s, _val)                               \
 746         do {                                                    \
 747                 len += scnprintf(buf + len, size - len,         \
 748                                  "%20s : %10d\n", _s, (_val));  \
 749         } while (0)
 750
 751 enum bt_op_flags {
 752         BT_OP_PRIORITY_DETECTED,
 753         BT_OP_SCAN,
 754 };
 755
 756 struct ath_btcoex {
 757         spinlock_t btcoex_lock;
 758         struct timer_list period_timer; /* Timer for BT period */
 759         struct timer_list no_stomp_timer;
 760         u32 bt_priority_cnt;
 761         unsigned long bt_priority_time;
 762         unsigned long op_flags;
 763         int bt_stomp_type; /* Types of BT stomping */
 764         u32 btcoex_no_stomp; /* in msec */
 765         u32 btcoex_period; /* in msec */
 766         u32 btscan_no_stomp; /* in msec */
 767         u32 duty_cycle;
 768         u32 bt_wait_time;
 769         int rssi_count;
 770         struct ath_mci_profile mci;
 771         u8 stomp_audio;
 772 };
 773
 774 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 775 int ath9k_init_btcoex(struct ath_softc *sc);
 776 void ath9k_deinit_btcoex(struct ath_softc *sc);
 777 void ath9k_start_btcoex(struct ath_softc *sc);
 778 void ath9k_stop_btcoex(struct ath_softc *sc);
 779 void ath9k_btcoex_timer_resume(struct ath_softc *sc);
 780 void ath9k_btcoex_timer_pause(struct ath_softc *sc);
 781 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status);
 782 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen);
 783 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc);
 784 int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size);
 785 #else
 786 static inline int ath9k_init_btcoex(struct ath_softc *sc)
 787 {
 788         return 0;
 789 }
 790 static inline void ath9k_deinit_btcoex(struct ath_softc *sc)
 791 {
 792 }
 793 static inline void ath9k_start_btcoex(struct ath_softc *sc)
 794 {
 795 }
 796 static inline void ath9k_stop_btcoex(struct ath_softc *sc)
 797 {
 798 }
 799 static inline void ath9k_btcoex_handle_interrupt(struct ath_softc *sc,
 800                                                  u32 status)
 801 {
 802 }
 803 static inline u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc,
 804                                           u32 max_4ms_framelen)
 805 {
 806         return 0;
 807 }
 808 static inline void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
 809 {
 810 }
 811 static inline int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
 812 {
 813         return 0;
 814 }
 815 #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
 816
 817 /********************/
 818 /*   LED Control    */
 819 /********************/
 820
 821 #define ATH_LED_PIN_DEF                 1
 822 #define ATH_LED_PIN_9287                8
 823 #define ATH_LED_PIN_9300                10
 824 #define ATH_LED_PIN_9485                6
 825 #define ATH_LED_PIN_9462                4
 826
 827 #ifdef CONFIG_MAC80211_LEDS
 828 void ath_init_leds(struct ath_softc *sc);
 829 void ath_deinit_leds(struct ath_softc *sc);
 830 #else
 831 static inline void ath_init_leds(struct ath_softc *sc)
 832 {
 833 }
 834
 835 static inline void ath_deinit_leds(struct ath_softc *sc)
 836 {
 837 }
 838 #endif
 839
 840 /************************/
 841 /* Wake on Wireless LAN */
 842 /************************/
 843
 844 #ifdef CONFIG_ATH9K_WOW
 845 void ath9k_init_wow(struct ieee80211_hw *hw);
 846 void ath9k_deinit_wow(struct ieee80211_hw *hw);
 847 int ath9k_suspend(struct ieee80211_hw *hw,
 848                   struct cfg80211_wowlan *wowlan);
 849 int ath9k_resume(struct ieee80211_hw *hw);
 850 void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled);
 851 #else
 852 static inline void ath9k_init_wow(struct ieee80211_hw *hw)
 853 {
 854 }
 855 static inline void ath9k_deinit_wow(struct ieee80211_hw *hw)
 856 {
 857 }
 858 static inline int ath9k_suspend(struct ieee80211_hw *hw,
 859                                 struct cfg80211_wowlan *wowlan)
 860 {
 861         return 0;
 862 }
 863 static inline int ath9k_resume(struct ieee80211_hw *hw)
 864 {
 865         return 0;
 866 }
 867 static inline void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
 868 {
 869 }
 870 #endif /* CONFIG_ATH9K_WOW */
 871
 872 /*******************************/
 873 /* Antenna diversity/combining */
 874 /*******************************/
 875
 876 #define ATH_ANT_RX_CURRENT_SHIFT 4
 877 #define ATH_ANT_RX_MAIN_SHIFT 2
 878 #define ATH_ANT_RX_MASK 0x3
 879
 880 #define ATH_ANT_DIV_COMB_SHORT_SCAN_INTR 50
 881 #define ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT 0x100
 882 #define ATH_ANT_DIV_COMB_MAX_PKTCOUNT 0x200
 883 #define ATH_ANT_DIV_COMB_INIT_COUNT 95
 884 #define ATH_ANT_DIV_COMB_MAX_COUNT 100
 885 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30
 886 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20
 887 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO_LOW_RSSI 50
 888 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2_LOW_RSSI 50
 889
 890 #define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4
 891 #define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2
 892 #define ATH_ANT_DIV_COMB_LNA1_DELTA_LOW 2
 893
 894 struct ath_ant_comb {
 895         u16 count;
 896         u16 total_pkt_count;
 897         bool scan;
 898         bool scan_not_start;
 899         int main_total_rssi;
 900         int alt_total_rssi;
 901         int alt_recv_cnt;
 902         int main_recv_cnt;
 903         int rssi_lna1;
 904         int rssi_lna2;
 905         int rssi_add;
 906         int rssi_sub;
 907         int rssi_first;
 908         int rssi_second;
 909         int rssi_third;
 910         int ant_ratio;
 911         int ant_ratio2;
 912         bool alt_good;
 913         int quick_scan_cnt;
 914         enum ath9k_ant_div_comb_lna_conf main_conf;
 915         enum ath9k_ant_div_comb_lna_conf first_quick_scan_conf;
 916         enum ath9k_ant_div_comb_lna_conf second_quick_scan_conf;
 917         bool first_ratio;
 918         bool second_ratio;
 919         unsigned long scan_start_time;
 920
 921         /*
 922          * Card-specific config values.
 923          */
 924         int low_rssi_thresh;
 925         int fast_div_bias;
 926 };
 927
 928 void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs);
 929
 930 /********************/
 931 /* Main driver core */
 932 /********************/
 933
 934 #define ATH9K_PCI_CUS198          0x0001
 935 #define ATH9K_PCI_CUS230          0x0002
 936 #define ATH9K_PCI_CUS217          0x0004
 937 #define ATH9K_PCI_CUS252          0x0008
 938 #define ATH9K_PCI_WOW             0x0010
 939 #define ATH9K_PCI_BT_ANT_DIV      0x0020
 940 #define ATH9K_PCI_D3_L1_WAR       0x0040
 941 #define ATH9K_PCI_AR9565_1ANT     0x0080
 942 #define ATH9K_PCI_AR9565_2ANT     0x0100
 943 #define ATH9K_PCI_NO_PLL_PWRSAVE  0x0200
 944 #define ATH9K_PCI_KILLER          0x0400
 945 #define ATH9K_PCI_LED_ACT_HI      0x0800
 946
 947 /*
 948  * Default cache line size, in bytes.
 949  * Used when PCI device not fully initialized by bootrom/BIOS
 950 */
 951 #define DEFAULT_CACHELINE       32
 952 #define ATH_CABQ_READY_TIME     80      /* % of beacon interval */
 953 #define ATH_TXPOWER_MAX         100     /* .5 dBm units */
 954 #define MAX_GTT_CNT             5
 955
 956 /* Powersave flags */
 957 #define PS_WAIT_FOR_BEACON        BIT(0)
 958 #define PS_WAIT_FOR_CAB           BIT(1)
 959 #define PS_WAIT_FOR_PSPOLL_DATA   BIT(2)
 960 #define PS_WAIT_FOR_TX_ACK        BIT(3)
 961 #define PS_BEACON_SYNC            BIT(4)
 962 #define PS_WAIT_FOR_ANI           BIT(5)
 963
 964 #define ATH9K_NUM_CHANCTX  2 /* supports 2 operating channels */
 965
 966 struct ath_softc {
 967         struct ieee80211_hw *hw;
 968         struct device *dev;
 969
 970         struct survey_info *cur_survey;
 971         struct survey_info survey[ATH9K_NUM_CHANNELS];
 972
 973         spinlock_t intr_lock;
 974         struct tasklet_struct intr_tq;
 975         struct tasklet_struct bcon_tasklet;
 976         struct ath_hw *sc_ah;
 977         void __iomem *mem;
 978         int irq;
 979         spinlock_t sc_serial_rw;
 980         spinlock_t sc_pm_lock;
 981         spinlock_t sc_pcu_lock;
 982         struct mutex mutex;
 983         struct work_struct paprd_work;
 984         struct work_struct hw_reset_work;
 985         struct completion paprd_complete;
 986         wait_queue_head_t tx_wait;
 987
 988 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
 989         struct work_struct chanctx_work;
 990         struct ath_gen_timer *p2p_ps_timer;
 991         struct ath_vif *p2p_ps_vif;
 992         struct ath_chanctx_sched sched;
 993         struct ath_offchannel offchannel;
 994         struct ath_chanctx *next_chan;
 995         struct completion go_beacon;
 996         struct timespec last_event_time;
 997 #endif
 998
 999         unsigned long driver_data;
1000
1001         u8 gtt_cnt;
1002         u32 intrstatus;
1003         u16 ps_flags; /* PS_* */
1004         bool ps_enabled;
1005         bool ps_idle;
1006         short nbcnvifs;
1007         unsigned long ps_usecount;
1008
1009         struct ath_rx rx;
1010         struct ath_tx tx;
1011         struct ath_beacon beacon;
1012
1013         struct cfg80211_chan_def cur_chandef;
1014         struct ath_chanctx chanctx[ATH9K_NUM_CHANCTX];
1015         struct ath_chanctx *cur_chan;
1016         spinlock_t chan_lock;
1017
1018 #ifdef CONFIG_MAC80211_LEDS
1019         bool led_registered;
1020         char led_name[32];
1021         struct led_classdev led_cdev;
1022 #endif
1023
1024 #ifdef CONFIG_ATH9K_DEBUGFS
1025         struct ath9k_debug debug;
1026 #endif
1027         struct delayed_work tx_complete_work;
1028         struct delayed_work hw_pll_work;
1029         struct timer_list sleep_timer;
1030
1031 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1032         struct ath_btcoex btcoex;
1033         struct ath_mci_coex mci_coex;
1034         struct work_struct mci_work;
1035 #endif
1036
1037         struct ath_descdma txsdma;
1038
1039         struct ath_ant_comb ant_comb;
1040         u8 ant_tx, ant_rx;
1041         struct dfs_pattern_detector *dfs_detector;
1042         u64 dfs_prev_pulse_ts;
1043         u32 wow_enabled;
1044
1045         struct ath_spec_scan_priv spec_priv;
1046
1047         struct ieee80211_vif *tx99_vif;
1048         struct sk_buff *tx99_skb;
1049         bool tx99_state;
1050         s16 tx99_power;
1051
1052 #ifdef CONFIG_ATH9K_WOW
1053         u32 wow_intr_before_sleep;
1054         bool force_wow;
1055 #endif
1056
1057 #ifdef CONFIG_ATH9K_HWRNG
1058         u32 rng_last;
1059         struct task_struct *rng_task;
1060 #endif
1061 };
1062
1063 /********/
1064 /* TX99 */
1065 /********/
1066
1067 #ifdef CONFIG_ATH9K_TX99
1068 void ath9k_tx99_init_debug(struct ath_softc *sc);
1069 int ath9k_tx99_send(struct ath_softc *sc, struct sk_buff *skb,
1070                     struct ath_tx_control *txctl);
1071 #else
1072 static inline void ath9k_tx99_init_debug(struct ath_softc *sc)
1073 {
1074 }
1075 static inline int ath9k_tx99_send(struct ath_softc *sc,
1076                                   struct sk_buff *skb,
1077                                   struct ath_tx_control *txctl)
1078 {
1079         return 0;
1080 }
1081 #endif /* CONFIG_ATH9K_TX99 */
1082
1083 /***************************/
1084 /* Random Number Generator */
1085 /***************************/
1086 #ifdef CONFIG_ATH9K_HWRNG
1087 void ath9k_rng_start(struct ath_softc *sc);
1088 void ath9k_rng_stop(struct ath_softc *sc);
1089 #else
1090 static inline void ath9k_rng_start(struct ath_softc *sc)
1091 {
1092 }
1093
1094 static inline void ath9k_rng_stop(struct ath_softc *sc)
1095 {
1096 }
1097 #endif
1098
1099 static inline void ath_read_cachesize(struct ath_common *common, int *csz)
1100 {
1101         common->bus_ops->read_cachesize(common, csz);
1102 }
1103
1104 void ath9k_tasklet(unsigned long data);
1105 int ath_cabq_update(struct ath_softc *);
1106 u8 ath9k_parse_mpdudensity(u8 mpdudensity);
1107 irqreturn_t ath_isr(int irq, void *dev);
1108 int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan);
1109 void ath_cancel_work(struct ath_softc *sc);
1110 void ath_restart_work(struct ath_softc *sc);
1111 int ath9k_init_device(u16 devid, struct ath_softc *sc,
1112                     const struct ath_bus_ops *bus_ops);
1113 void ath9k_deinit_device(struct ath_softc *sc);
1114 void ath9k_reload_chainmask_settings(struct ath_softc *sc);
1115 u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate);
1116 void ath_start_rfkill_poll(struct ath_softc *sc);
1117 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw);
1118 void ath9k_ps_wakeup(struct ath_softc *sc);
1119 void ath9k_ps_restore(struct ath_softc *sc);
1120
1121 #ifdef CONFIG_ATH9K_PCI
1122 int ath_pci_init(void);
1123 void ath_pci_exit(void);
1124 #else
1125 static inline int ath_pci_init(void) { return 0; };
1126 static inline void ath_pci_exit(void) {};
1127 #endif
1128
1129 #ifdef CONFIG_ATH9K_AHB
1130 int ath_ahb_init(void);
1131 void ath_ahb_exit(void);
1132 #else
1133 static inline int ath_ahb_init(void) { return 0; };
1134 static inline void ath_ahb_exit(void) {};
1135 #endif
1136
1137 #endif /* ATH9K_H */