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_MAX_QDEPTH          (ATH_TXBUF / 4 - ATH_TXBUF_RESERVE)
  95 #define ATH_TXMAXTRY            13
  96 #define ATH_MAX_SW_RETRIES      30
  97
  98 #define TID_TO_WME_AC(_tid)                             \
  99         ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE :   \
 100          (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK :   \
 101          (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI :   \
 102          IEEE80211_AC_VO)
 103
 104 #define ATH_AGGR_DELIM_SZ          4
 105 #define ATH_AGGR_MINPLEN           256 /* in bytes, minimum packet length */
 106 /* number of delimiters for encryption padding */
 107 #define ATH_AGGR_ENCRYPTDELIM      10
 108 /* minimum h/w qdepth to be sustained to maximize aggregation */
 109 #define ATH_AGGR_MIN_QDEPTH        2
 110 /* minimum h/w qdepth for non-aggregated traffic */
 111 #define ATH_NON_AGGR_MIN_QDEPTH    8
 112 #define ATH_TX_COMPLETE_POLL_INT   1000
 113 #define ATH_TXFIFO_DEPTH           8
 114 #define ATH_TX_ERROR               0x01
 115
 116 /* Stop tx traffic 1ms before the GO goes away */
 117 #define ATH_P2P_PS_STOP_TIME       1000
 118
 119 #define IEEE80211_SEQ_SEQ_SHIFT    4
 120 #define IEEE80211_SEQ_MAX          4096
 121 #define IEEE80211_WEP_IVLEN        3
 122 #define IEEE80211_WEP_KIDLEN       1
 123 #define IEEE80211_WEP_CRCLEN       4
 124 #define IEEE80211_MAX_MPDU_LEN     (3840 + FCS_LEN +            \
 125                                     (IEEE80211_WEP_IVLEN +      \
 126                                      IEEE80211_WEP_KIDLEN +     \
 127                                      IEEE80211_WEP_CRCLEN))
 128
 129 /* return whether a bit at index _n in bitmap _bm is set
 130  * _sz is the size of the bitmap  */
 131 #define ATH_BA_ISSET(_bm, _n)  (((_n) < (WME_BA_BMP_SIZE)) &&           \
 132                                 ((_bm)[(_n) >> 5] & (1 << ((_n) & 31))))
 133
 134 /* return block-ack bitmap index given sequence and starting sequence */
 135 #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1))
 136
 137 /* return the seqno for _start + _offset */
 138 #define ATH_BA_INDEX2SEQ(_seq, _offset) (((_seq) + (_offset)) & (IEEE80211_SEQ_MAX - 1))
 139
 140 /* returns delimiter padding required given the packet length */
 141 #define ATH_AGGR_GET_NDELIM(_len)                                       \
 142        (((_len) >= ATH_AGGR_MINPLEN) ? 0 :                             \
 143         DIV_ROUND_UP(ATH_AGGR_MINPLEN - (_len), ATH_AGGR_DELIM_SZ))
 144
 145 #define BAW_WITHIN(_start, _bawsz, _seqno) \
 146         ((((_seqno) - (_start)) & 4095) < (_bawsz))
 147
 148 #define ATH_AN_2_TID(_an, _tidno)  (&(_an)->tid[(_tidno)])
 149
 150 #define IS_HT_RATE(rate)   (rate & 0x80)
 151 #define IS_CCK_RATE(rate)  ((rate >= 0x18) && (rate <= 0x1e))
 152 #define IS_OFDM_RATE(rate) ((rate >= 0x8) && (rate <= 0xf))
 153
 154 enum {
 155        WLAN_RC_PHY_OFDM,
 156        WLAN_RC_PHY_CCK,
 157 };
 158
 159 struct ath_txq {
 160         int mac80211_qnum; /* mac80211 queue number, -1 means not mac80211 Q */
 161         u32 axq_qnum; /* ath9k hardware queue number */
 162         void *axq_link;
 163         struct list_head axq_q;
 164         spinlock_t axq_lock;
 165         u32 axq_depth;
 166         u32 axq_ampdu_depth;
 167         bool stopped;
 168         bool axq_tx_inprogress;
 169         struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
 170         u8 txq_headidx;
 171         u8 txq_tailidx;
 172         int pending_frames;
 173         struct sk_buff_head complete_q;
 174 };
 175
 176 struct ath_frame_info {
 177         struct ath_buf *bf;
 178         u16 framelen;
 179         s8 txq;
 180         u8 keyix;
 181         u8 rtscts_rate;
 182         u8 retries : 7;
 183         u8 baw_tracked : 1;
 184         u8 tx_power;
 185         enum ath9k_key_type keytype:2;
 186 };
 187
 188 struct ath_rxbuf {
 189         struct list_head list;
 190         struct sk_buff *bf_mpdu;
 191         void *bf_desc;
 192         dma_addr_t bf_daddr;
 193         dma_addr_t bf_buf_addr;
 194 };
 195
 196 /**
 197  * enum buffer_type - Buffer type flags
 198  *
 199  * @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX)
 200  * @BUF_AGGR: Indicates whether the buffer can be aggregated
 201  *      (used in aggregation scheduling)
 202  */
 203 enum buffer_type {
 204         BUF_AMPDU               = BIT(0),
 205         BUF_AGGR                = BIT(1),
 206 };
 207
 208 #define bf_isampdu(bf)          (bf->bf_state.bf_type & BUF_AMPDU)
 209 #define bf_isaggr(bf)           (bf->bf_state.bf_type & BUF_AGGR)
 210
 211 struct ath_buf_state {
 212         u8 bf_type;
 213         u8 bfs_paprd;
 214         u8 ndelim;
 215         bool stale;
 216         u16 seqno;
 217         unsigned long bfs_paprd_timestamp;
 218 };
 219
 220 struct ath_buf {
 221         struct list_head list;
 222         struct ath_buf *bf_lastbf;      /* last buf of this unit (a frame or
 223                                            an aggregate) */
 224         struct ath_buf *bf_next;        /* next subframe in the aggregate */
 225         struct sk_buff *bf_mpdu;        /* enclosing frame structure */
 226         void *bf_desc;                  /* virtual addr of desc */
 227         dma_addr_t bf_daddr;            /* physical addr of desc */
 228         dma_addr_t bf_buf_addr; /* physical addr of data buffer, for DMA */
 229         struct ieee80211_tx_rate rates[4];
 230         struct ath_buf_state bf_state;
 231 };
 232
 233 struct ath_atx_tid {
 234         struct list_head list;
 235         struct sk_buff_head buf_q;
 236         struct sk_buff_head retry_q;
 237         struct ath_node *an;
 238         struct ath_txq *txq;
 239         unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
 240         u16 seq_start;
 241         u16 seq_next;
 242         u16 baw_size;
 243         u8 tidno;
 244         int baw_head;   /* first un-acked tx buffer */
 245         int baw_tail;   /* next unused tx buffer slot */
 246
 247         s8 bar_index;
 248         bool active;
 249         bool clear_ps_filter;
 250 };
 251
 252 struct ath_node {
 253         struct ath_softc *sc;
 254         struct ieee80211_sta *sta; /* station struct we're part of */
 255         struct ieee80211_vif *vif; /* interface with which we're associated */
 256         struct ath_atx_tid tid[IEEE80211_NUM_TIDS];
 257
 258         u16 maxampdu;
 259         u8 mpdudensity;
 260         s8 ps_key;
 261
 262         bool sleeping;
 263         bool no_ps_filter;
 264
 265 #ifdef CONFIG_ATH9K_STATION_STATISTICS
 266         struct ath_rx_rate_stats rx_rate_stats;
 267 #endif
 268         u8 key_idx[4];
 269
 270         u32 ackto;
 271         struct list_head list;
 272 };
 273
 274 struct ath_tx_control {
 275         struct ath_txq *txq;
 276         struct ath_node *an;
 277         struct ieee80211_sta *sta;
 278         u8 paprd;
 279         bool force_channel;
 280 };
 281
 282
 283 /**
 284  * @txq_map:  Index is mac80211 queue number.  This is
 285  *  not necessarily the same as the hardware queue number
 286  *  (axq_qnum).
 287  */
 288 struct ath_tx {
 289         u32 txqsetup;
 290         spinlock_t txbuflock;
 291         struct list_head txbuf;
 292         struct ath_txq txq[ATH9K_NUM_TX_QUEUES];
 293         struct ath_descdma txdma;
 294         struct ath_txq *txq_map[IEEE80211_NUM_ACS];
 295         struct ath_txq *uapsdq;
 296         u32 txq_max_pending[IEEE80211_NUM_ACS];
 297         u16 max_aggr_framelen[IEEE80211_NUM_ACS][4][32];
 298 };
 299
 300 struct ath_rx_edma {
 301         struct sk_buff_head rx_fifo;
 302         u32 rx_fifo_hwsize;
 303 };
 304
 305 struct ath_rx {
 306         u8 defant;
 307         u8 rxotherant;
 308         bool discard_next;
 309         u32 *rxlink;
 310         u32 num_pkts;
 311         struct list_head rxbuf;
 312         struct ath_descdma rxdma;
 313         struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX];
 314
 315         struct ath_rxbuf *buf_hold;
 316         struct sk_buff *frag;
 317
 318         u32 ampdu_ref;
 319 };
 320
 321 /*******************/
 322 /* Channel Context */
 323 /*******************/
 324
 325 struct ath_chanctx {
 326         struct cfg80211_chan_def chandef;
 327         struct list_head vifs;
 328         struct list_head acq[IEEE80211_NUM_ACS];
 329         int hw_queue_base;
 330
 331         /* do not dereference, use for comparison only */
 332         struct ieee80211_vif *primary_sta;
 333
 334         struct ath_beacon_config beacon;
 335         struct ath9k_hw_cal_data caldata;
 336         struct timespec tsf_ts;
 337         u64 tsf_val;
 338         u32 last_beacon;
 339
 340         int flush_timeout;
 341         u16 txpower;
 342         u16 cur_txpower;
 343         bool offchannel;
 344         bool stopped;
 345         bool active;
 346         bool assigned;
 347         bool switch_after_beacon;
 348
 349         short nvifs;
 350         short nvifs_assigned;
 351         unsigned int rxfilter;
 352 };
 353
 354 enum ath_chanctx_event {
 355         ATH_CHANCTX_EVENT_BEACON_PREPARE,
 356         ATH_CHANCTX_EVENT_BEACON_SENT,
 357         ATH_CHANCTX_EVENT_TSF_TIMER,
 358         ATH_CHANCTX_EVENT_BEACON_RECEIVED,
 359         ATH_CHANCTX_EVENT_AUTHORIZED,
 360         ATH_CHANCTX_EVENT_SWITCH,
 361         ATH_CHANCTX_EVENT_ASSIGN,
 362         ATH_CHANCTX_EVENT_UNASSIGN,
 363         ATH_CHANCTX_EVENT_CHANGE,
 364         ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL,
 365 };
 366
 367 enum ath_chanctx_state {
 368         ATH_CHANCTX_STATE_IDLE,
 369         ATH_CHANCTX_STATE_WAIT_FOR_BEACON,
 370         ATH_CHANCTX_STATE_WAIT_FOR_TIMER,
 371         ATH_CHANCTX_STATE_SWITCH,
 372         ATH_CHANCTX_STATE_FORCE_ACTIVE,
 373 };
 374
 375 struct ath_chanctx_sched {
 376         bool beacon_pending;
 377         bool beacon_adjust;
 378         bool offchannel_pending;
 379         bool wait_switch;
 380         bool force_noa_update;
 381         bool extend_absence;
 382         bool mgd_prepare_tx;
 383         enum ath_chanctx_state state;
 384         u8 beacon_miss;
 385
 386         u32 next_tbtt;
 387         u32 switch_start_time;
 388         unsigned int offchannel_duration;
 389         unsigned int channel_switch_time;
 390
 391         /* backup, in case the hardware timer fails */
 392         struct timer_list timer;
 393 };
 394
 395 enum ath_offchannel_state {
 396         ATH_OFFCHANNEL_IDLE,
 397         ATH_OFFCHANNEL_PROBE_SEND,
 398         ATH_OFFCHANNEL_PROBE_WAIT,
 399         ATH_OFFCHANNEL_SUSPEND,
 400         ATH_OFFCHANNEL_ROC_START,
 401         ATH_OFFCHANNEL_ROC_WAIT,
 402         ATH_OFFCHANNEL_ROC_DONE,
 403 };
 404
 405 enum ath_roc_complete_reason {
 406         ATH_ROC_COMPLETE_EXPIRE,
 407         ATH_ROC_COMPLETE_ABORT,
 408         ATH_ROC_COMPLETE_CANCEL,
 409 };
 410
 411 struct ath_offchannel {
 412         struct ath_chanctx chan;
 413         struct timer_list timer;
 414         struct cfg80211_scan_request *scan_req;
 415         struct ieee80211_vif *scan_vif;
 416         int scan_idx;
 417         enum ath_offchannel_state state;
 418         struct ieee80211_channel *roc_chan;
 419         struct ieee80211_vif *roc_vif;
 420         int roc_duration;
 421         int duration;
 422 };
 423
 424 #define case_rtn_string(val) case val: return #val
 425
 426 #define ath_for_each_chanctx(_sc, _ctx)                             \
 427         for (ctx = &sc->chanctx[0];                                 \
 428              ctx <= &sc->chanctx[ARRAY_SIZE(sc->chanctx) - 1];      \
 429              ctx++)
 430
 431 void ath_chanctx_init(struct ath_softc *sc);
 432 void ath_chanctx_set_channel(struct ath_softc *sc, struct ath_chanctx *ctx,
 433                              struct cfg80211_chan_def *chandef);
 434
 435 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
 436
 437 static inline struct ath_chanctx *
 438 ath_chanctx_get(struct ieee80211_chanctx_conf *ctx)
 439 {
 440         struct ath_chanctx **ptr = (void *) ctx->drv_priv;
 441         return *ptr;
 442 }
 443
 444 bool ath9k_is_chanctx_enabled(void);
 445 void ath9k_fill_chanctx_ops(void);
 446 void ath9k_init_channel_context(struct ath_softc *sc);
 447 void ath9k_offchannel_init(struct ath_softc *sc);
 448 void ath9k_deinit_channel_context(struct ath_softc *sc);
 449 int ath9k_init_p2p(struct ath_softc *sc);
 450 void ath9k_deinit_p2p(struct ath_softc *sc);
 451 void ath9k_p2p_remove_vif(struct ath_softc *sc,
 452                           struct ieee80211_vif *vif);
 453 void ath9k_p2p_beacon_sync(struct ath_softc *sc);
 454 void ath9k_p2p_bss_info_changed(struct ath_softc *sc,
 455                                 struct ieee80211_vif *vif);
 456 void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp,
 457                           struct sk_buff *skb);
 458 void ath9k_p2p_ps_timer(void *priv);
 459 void ath9k_chanctx_wake_queues(struct ath_softc *sc, struct ath_chanctx *ctx);
 460 void ath9k_chanctx_stop_queues(struct ath_softc *sc, struct ath_chanctx *ctx);
 461 void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx);
 462
 463 void ath_chanctx_beacon_recv_ev(struct ath_softc *sc,
 464                                 enum ath_chanctx_event ev);
 465 void ath_chanctx_beacon_sent_ev(struct ath_softc *sc,
 466                                 enum ath_chanctx_event ev);
 467 void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
 468                        enum ath_chanctx_event ev);
 469 void ath_chanctx_set_next(struct ath_softc *sc, bool force);
 470 void ath_offchannel_next(struct ath_softc *sc);
 471 void ath_scan_complete(struct ath_softc *sc, bool abort);
 472 void ath_roc_complete(struct ath_softc *sc,
 473                       enum ath_roc_complete_reason reason);
 474 struct ath_chanctx* ath_is_go_chanctx_present(struct ath_softc *sc);
 475
 476 #else
 477
 478 static inline bool ath9k_is_chanctx_enabled(void)
 479 {
 480         return false;
 481 }
 482 static inline void ath9k_fill_chanctx_ops(void)
 483 {
 484 }
 485 static inline void ath9k_init_channel_context(struct ath_softc *sc)
 486 {
 487 }
 488 static inline void ath9k_offchannel_init(struct ath_softc *sc)
 489 {
 490 }
 491 static inline void ath9k_deinit_channel_context(struct ath_softc *sc)
 492 {
 493 }
 494 static inline void ath_chanctx_beacon_recv_ev(struct ath_softc *sc,
 495                                               enum ath_chanctx_event ev)
 496 {
 497 }
 498 static inline void ath_chanctx_beacon_sent_ev(struct ath_softc *sc,
 499                                               enum ath_chanctx_event ev)
 500 {
 501 }
 502 static inline void ath_chanctx_event(struct ath_softc *sc,
 503                                      struct ieee80211_vif *vif,
 504                                      enum ath_chanctx_event ev)
 505 {
 506 }
 507 static inline int ath9k_init_p2p(struct ath_softc *sc)
 508 {
 509         return 0;
 510 }
 511 static inline void ath9k_deinit_p2p(struct ath_softc *sc)
 512 {
 513 }
 514 static inline void ath9k_p2p_remove_vif(struct ath_softc *sc,
 515                                         struct ieee80211_vif *vif)
 516 {
 517 }
 518 static inline void ath9k_p2p_beacon_sync(struct ath_softc *sc)
 519 {
 520 }
 521 static inline void ath9k_p2p_bss_info_changed(struct ath_softc *sc,
 522                                               struct ieee80211_vif *vif)
 523 {
 524 }
 525 static inline void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp,
 526                                         struct sk_buff *skb)
 527 {
 528 }
 529 static inline void ath9k_p2p_ps_timer(struct ath_softc *sc)
 530 {
 531 }
 532 static inline void ath9k_chanctx_wake_queues(struct ath_softc *sc,
 533                                              struct ath_chanctx *ctx)
 534 {
 535 }
 536 static inline void ath9k_chanctx_stop_queues(struct ath_softc *sc,
 537                                              struct ath_chanctx *ctx)
 538 {
 539 }
 540 static inline void ath_chanctx_check_active(struct ath_softc *sc,
 541                                             struct ath_chanctx *ctx)
 542 {
 543 }
 544
 545 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
 546
 547 void ath_startrecv(struct ath_softc *sc);
 548 bool ath_stoprecv(struct ath_softc *sc);
 549 u32 ath_calcrxfilter(struct ath_softc *sc);
 550 int ath_rx_init(struct ath_softc *sc, int nbufs);
 551 void ath_rx_cleanup(struct ath_softc *sc);
 552 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp);
 553 struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype);
 554 void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq);
 555 void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq);
 556 void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq);
 557 void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq);
 558 bool ath_drain_all_txq(struct ath_softc *sc);
 559 void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq);
 560 void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an);
 561 void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an);
 562 void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq);
 563 void ath_txq_schedule_all(struct ath_softc *sc);
 564 int ath_tx_init(struct ath_softc *sc, int nbufs);
 565 int ath_txq_update(struct ath_softc *sc, int qnum,
 566                    struct ath9k_tx_queue_info *q);
 567 void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop);
 568 void ath_assign_seq(struct ath_common *common, struct sk_buff *skb);
 569 int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
 570                  struct ath_tx_control *txctl);
 571 void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 572                  struct sk_buff *skb);
 573 void ath_tx_tasklet(struct ath_softc *sc);
 574 void ath_tx_edma_tasklet(struct ath_softc *sc);
 575 int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
 576                       u16 tid, u16 *ssn);
 577 void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
 578 void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
 579
 580 void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an);
 581 void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
 582                        struct ath_node *an);
 583 void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
 584                                    struct ieee80211_sta *sta,
 585                                    u16 tids, int nframes,
 586                                    enum ieee80211_frame_release_type reason,
 587                                    bool more_data);
 588
 589 /********/
 590 /* VIFs */
 591 /********/
 592
 593 #define P2P_DEFAULT_CTWIN 10
 594
 595 struct ath_vif {
 596         struct list_head list;
 597
 598         u16 seq_no;
 599
 600         /* BSS info */
 601         u8 bssid[ETH_ALEN] __aligned(2);
 602         u16 aid;
 603         bool assoc;
 604
 605         struct ieee80211_vif *vif;
 606         struct ath_node mcast_node;
 607         int av_bslot;
 608         __le64 tsf_adjust; /* TSF adjustment for staggered beacons */
 609         struct ath_buf *av_bcbuf;
 610         struct ath_chanctx *chanctx;
 611
 612         /* P2P Client */
 613         struct ieee80211_noa_data noa;
 614
 615         /* P2P GO */
 616         u8 noa_index;
 617         u32 offchannel_start;
 618         u32 offchannel_duration;
 619
 620         /* These are used for both periodic and one-shot */
 621         u32 noa_start;
 622         u32 noa_duration;
 623         bool periodic_noa;
 624         bool oneshot_noa;
 625 };
 626
 627 struct ath9k_vif_iter_data {
 628         u8 hw_macaddr[ETH_ALEN]; /* address of the first vif */
 629         u8 mask[ETH_ALEN]; /* bssid mask */
 630         bool has_hw_macaddr;
 631         u8 slottime;
 632         bool beacons;
 633
 634         int naps;      /* number of AP vifs */
 635         int nmeshes;   /* number of mesh vifs */
 636         int nstations; /* number of station vifs */
 637         int nwds;      /* number of WDS vifs */
 638         int nadhocs;   /* number of adhoc vifs */
 639         int nocbs;     /* number of OCB vifs */
 640         struct ieee80211_vif *primary_sta;
 641 };
 642
 643 void ath9k_calculate_iter_data(struct ath_softc *sc,
 644                                struct ath_chanctx *ctx,
 645                                struct ath9k_vif_iter_data *iter_data);
 646 void ath9k_calculate_summary_state(struct ath_softc *sc,
 647                                    struct ath_chanctx *ctx);
 648 void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif);
 649
 650 /*******************/
 651 /* Beacon Handling */
 652 /*******************/
 653
 654 /*
 655  * Regardless of the number of beacons we stagger, (i.e. regardless of the
 656  * number of BSSIDs) if a given beacon does not go out even after waiting this
 657  * number of beacon intervals, the game's up.
 658  */
 659 #define BSTUCK_THRESH                   9
 660 #define ATH_BCBUF                       8
 661 #define ATH_DEFAULT_BINTVAL             100 /* TU */
 662 #define ATH_DEFAULT_BMISS_LIMIT         10
 663
 664 #define TSF_TO_TU(_h,_l) \
 665         ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
 666
 667 struct ath_beacon {
 668         enum {
 669                 OK,             /* no change needed */
 670                 UPDATE,         /* update pending */
 671                 COMMIT          /* beacon sent, commit change */
 672         } updateslot;           /* slot time update fsm */
 673
 674         u32 beaconq;
 675         u32 bmisscnt;
 676         struct ieee80211_vif *bslot[ATH_BCBUF];
 677         int slottime;
 678         int slotupdate;
 679         struct ath_descdma bdma;
 680         struct ath_txq *cabq;
 681         struct list_head bbuf;
 682
 683         bool tx_processed;
 684         bool tx_last;
 685 };
 686
 687 void ath9k_beacon_tasklet(unsigned long data);
 688 void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
 689                          u32 changed);
 690 void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
 691 void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
 692 void ath9k_set_beacon(struct ath_softc *sc);
 693 bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif);
 694 void ath9k_csa_update(struct ath_softc *sc);
 695
 696 /*******************/
 697 /* Link Monitoring */
 698 /*******************/
 699
 700 #define ATH_STA_SHORT_CALINTERVAL 1000    /* 1 second */
 701 #define ATH_AP_SHORT_CALINTERVAL  100     /* 100 ms */
 702 #define ATH_ANI_POLLINTERVAL_OLD  100     /* 100 ms */
 703 #define ATH_ANI_POLLINTERVAL_NEW  1000    /* 1000 ms */
 704 #define ATH_LONG_CALINTERVAL_INT  1000    /* 1000 ms */
 705 #define ATH_LONG_CALINTERVAL      30000   /* 30 seconds */
 706 #define ATH_RESTART_CALINTERVAL   1200000 /* 20 minutes */
 707 #define ATH_ANI_MAX_SKIP_COUNT    10
 708 #define ATH_PAPRD_TIMEOUT         100 /* msecs */
 709 #define ATH_PLL_WORK_INTERVAL     100
 710
 711 void ath_tx_complete_poll_work(struct work_struct *work);
 712 void ath_reset_work(struct work_struct *work);
 713 bool ath_hw_check(struct ath_softc *sc);
 714 void ath_hw_pll_work(struct work_struct *work);
 715 void ath_paprd_calibrate(struct work_struct *work);
 716 void ath_ani_calibrate(unsigned long data);
 717 void ath_start_ani(struct ath_softc *sc);
 718 void ath_stop_ani(struct ath_softc *sc);
 719 void ath_check_ani(struct ath_softc *sc);
 720 int ath_update_survey_stats(struct ath_softc *sc);
 721 void ath_update_survey_nf(struct ath_softc *sc, int channel);
 722 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type);
 723 void ath_ps_full_sleep(unsigned long data);
 724 void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop,
 725                    bool sw_pending, bool timeout_override);
 726
 727 /**********/
 728 /* BTCOEX */
 729 /**********/
 730
 731 #define ATH_DUMP_BTCOEX(_s, _val)                               \
 732         do {                                                    \
 733                 len += scnprintf(buf + len, size - len,         \
 734                                  "%20s : %10d\n", _s, (_val));  \
 735         } while (0)
 736
 737 enum bt_op_flags {
 738         BT_OP_PRIORITY_DETECTED,
 739         BT_OP_SCAN,
 740 };
 741
 742 struct ath_btcoex {
 743         spinlock_t btcoex_lock;
 744         struct timer_list period_timer; /* Timer for BT period */
 745         struct timer_list no_stomp_timer;
 746         u32 bt_priority_cnt;
 747         unsigned long bt_priority_time;
 748         unsigned long op_flags;
 749         int bt_stomp_type; /* Types of BT stomping */
 750         u32 btcoex_no_stomp; /* in msec */
 751         u32 btcoex_period; /* in msec */
 752         u32 btscan_no_stomp; /* in msec */
 753         u32 duty_cycle;
 754         u32 bt_wait_time;
 755         int rssi_count;
 756         struct ath_mci_profile mci;
 757         u8 stomp_audio;
 758 };
 759
 760 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 761 int ath9k_init_btcoex(struct ath_softc *sc);
 762 void ath9k_deinit_btcoex(struct ath_softc *sc);
 763 void ath9k_start_btcoex(struct ath_softc *sc);
 764 void ath9k_stop_btcoex(struct ath_softc *sc);
 765 void ath9k_btcoex_timer_resume(struct ath_softc *sc);
 766 void ath9k_btcoex_timer_pause(struct ath_softc *sc);
 767 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status);
 768 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen);
 769 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc);
 770 int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size);
 771 #else
 772 static inline int ath9k_init_btcoex(struct ath_softc *sc)
 773 {
 774         return 0;
 775 }
 776 static inline void ath9k_deinit_btcoex(struct ath_softc *sc)
 777 {
 778 }
 779 static inline void ath9k_start_btcoex(struct ath_softc *sc)
 780 {
 781 }
 782 static inline void ath9k_stop_btcoex(struct ath_softc *sc)
 783 {
 784 }
 785 static inline void ath9k_btcoex_handle_interrupt(struct ath_softc *sc,
 786                                                  u32 status)
 787 {
 788 }
 789 static inline u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc,
 790                                           u32 max_4ms_framelen)
 791 {
 792         return 0;
 793 }
 794 static inline void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
 795 {
 796 }
 797 static inline int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
 798 {
 799         return 0;
 800 }
 801 #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
 802
 803 /********************/
 804 /*   LED Control    */
 805 /********************/
 806
 807 #define ATH_LED_PIN_DEF                 1
 808 #define ATH_LED_PIN_9287                8
 809 #define ATH_LED_PIN_9300                10
 810 #define ATH_LED_PIN_9485                6
 811 #define ATH_LED_PIN_9462                4
 812
 813 #ifdef CONFIG_MAC80211_LEDS
 814 void ath_init_leds(struct ath_softc *sc);
 815 void ath_deinit_leds(struct ath_softc *sc);
 816 void ath_fill_led_pin(struct ath_softc *sc);
 817 #else
 818 static inline void ath_init_leds(struct ath_softc *sc)
 819 {
 820 }
 821
 822 static inline void ath_deinit_leds(struct ath_softc *sc)
 823 {
 824 }
 825 static inline void ath_fill_led_pin(struct ath_softc *sc)
 826 {
 827 }
 828 #endif
 829
 830 /************************/
 831 /* Wake on Wireless LAN */
 832 /************************/
 833
 834 #ifdef CONFIG_ATH9K_WOW
 835 void ath9k_init_wow(struct ieee80211_hw *hw);
 836 void ath9k_deinit_wow(struct ieee80211_hw *hw);
 837 int ath9k_suspend(struct ieee80211_hw *hw,
 838                   struct cfg80211_wowlan *wowlan);
 839 int ath9k_resume(struct ieee80211_hw *hw);
 840 void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled);
 841 #else
 842 static inline void ath9k_init_wow(struct ieee80211_hw *hw)
 843 {
 844 }
 845 static inline void ath9k_deinit_wow(struct ieee80211_hw *hw)
 846 {
 847 }
 848 static inline int ath9k_suspend(struct ieee80211_hw *hw,
 849                                 struct cfg80211_wowlan *wowlan)
 850 {
 851         return 0;
 852 }
 853 static inline int ath9k_resume(struct ieee80211_hw *hw)
 854 {
 855         return 0;
 856 }
 857 static inline void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
 858 {
 859 }
 860 #endif /* CONFIG_ATH9K_WOW */
 861
 862 /*******************************/
 863 /* Antenna diversity/combining */
 864 /*******************************/
 865
 866 #define ATH_ANT_RX_CURRENT_SHIFT 4
 867 #define ATH_ANT_RX_MAIN_SHIFT 2
 868 #define ATH_ANT_RX_MASK 0x3
 869
 870 #define ATH_ANT_DIV_COMB_SHORT_SCAN_INTR 50
 871 #define ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT 0x100
 872 #define ATH_ANT_DIV_COMB_MAX_PKTCOUNT 0x200
 873 #define ATH_ANT_DIV_COMB_INIT_COUNT 95
 874 #define ATH_ANT_DIV_COMB_MAX_COUNT 100
 875 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30
 876 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20
 877 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO_LOW_RSSI 50
 878 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2_LOW_RSSI 50
 879
 880 #define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4
 881 #define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2
 882 #define ATH_ANT_DIV_COMB_LNA1_DELTA_LOW 2
 883
 884 struct ath_ant_comb {
 885         u16 count;
 886         u16 total_pkt_count;
 887         bool scan;
 888         bool scan_not_start;
 889         int main_total_rssi;
 890         int alt_total_rssi;
 891         int alt_recv_cnt;
 892         int main_recv_cnt;
 893         int rssi_lna1;
 894         int rssi_lna2;
 895         int rssi_add;
 896         int rssi_sub;
 897         int rssi_first;
 898         int rssi_second;
 899         int rssi_third;
 900         int ant_ratio;
 901         int ant_ratio2;
 902         bool alt_good;
 903         int quick_scan_cnt;
 904         enum ath9k_ant_div_comb_lna_conf main_conf;
 905         enum ath9k_ant_div_comb_lna_conf first_quick_scan_conf;
 906         enum ath9k_ant_div_comb_lna_conf second_quick_scan_conf;
 907         bool first_ratio;
 908         bool second_ratio;
 909         unsigned long scan_start_time;
 910
 911         /*
 912          * Card-specific config values.
 913          */
 914         int low_rssi_thresh;
 915         int fast_div_bias;
 916 };
 917
 918 void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs);
 919
 920 /********************/
 921 /* Main driver core */
 922 /********************/
 923
 924 #define ATH9K_PCI_CUS198          0x0001
 925 #define ATH9K_PCI_CUS230          0x0002
 926 #define ATH9K_PCI_CUS217          0x0004
 927 #define ATH9K_PCI_CUS252          0x0008
 928 #define ATH9K_PCI_WOW             0x0010
 929 #define ATH9K_PCI_BT_ANT_DIV      0x0020
 930 #define ATH9K_PCI_D3_L1_WAR       0x0040
 931 #define ATH9K_PCI_AR9565_1ANT     0x0080
 932 #define ATH9K_PCI_AR9565_2ANT     0x0100
 933 #define ATH9K_PCI_NO_PLL_PWRSAVE  0x0200
 934 #define ATH9K_PCI_KILLER          0x0400
 935 #define ATH9K_PCI_LED_ACT_HI      0x0800
 936
 937 /*
 938  * Default cache line size, in bytes.
 939  * Used when PCI device not fully initialized by bootrom/BIOS
 940 */
 941 #define DEFAULT_CACHELINE       32
 942 #define ATH_CABQ_READY_TIME     80      /* % of beacon interval */
 943 #define ATH_TXPOWER_MAX         100     /* .5 dBm units */
 944 #define MAX_GTT_CNT             5
 945
 946 /* Powersave flags */
 947 #define PS_WAIT_FOR_BEACON        BIT(0)
 948 #define PS_WAIT_FOR_CAB           BIT(1)
 949 #define PS_WAIT_FOR_PSPOLL_DATA   BIT(2)
 950 #define PS_WAIT_FOR_TX_ACK        BIT(3)
 951 #define PS_BEACON_SYNC            BIT(4)
 952 #define PS_WAIT_FOR_ANI           BIT(5)
 953
 954 #define ATH9K_NUM_CHANCTX  2 /* supports 2 operating channels */
 955
 956 struct ath_softc {
 957         struct ieee80211_hw *hw;
 958         struct device *dev;
 959
 960         struct survey_info *cur_survey;
 961         struct survey_info survey[ATH9K_NUM_CHANNELS];
 962
 963         struct tasklet_struct intr_tq;
 964         struct tasklet_struct bcon_tasklet;
 965         struct ath_hw *sc_ah;
 966         void __iomem *mem;
 967         int irq;
 968         spinlock_t sc_serial_rw;
 969         spinlock_t sc_pm_lock;
 970         spinlock_t sc_pcu_lock;
 971         struct mutex mutex;
 972         struct work_struct paprd_work;
 973         struct work_struct hw_reset_work;
 974         struct completion paprd_complete;
 975         wait_queue_head_t tx_wait;
 976
 977 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
 978         struct work_struct chanctx_work;
 979         struct ath_gen_timer *p2p_ps_timer;
 980         struct ath_vif *p2p_ps_vif;
 981         struct ath_chanctx_sched sched;
 982         struct ath_offchannel offchannel;
 983         struct ath_chanctx *next_chan;
 984         struct completion go_beacon;
 985         struct timespec last_event_time;
 986 #endif
 987
 988         unsigned long driver_data;
 989
 990         u8 gtt_cnt;
 991         u32 intrstatus;
 992         u16 ps_flags; /* PS_* */
 993         bool ps_enabled;
 994         bool ps_idle;
 995         short nbcnvifs;
 996         unsigned long ps_usecount;
 997
 998         struct ath_rx rx;
 999         struct ath_tx tx;
1000         struct ath_beacon beacon;
1001
1002         struct cfg80211_chan_def cur_chandef;
1003         struct ath_chanctx chanctx[ATH9K_NUM_CHANCTX];
1004         struct ath_chanctx *cur_chan;
1005         spinlock_t chan_lock;
1006
1007 #ifdef CONFIG_MAC80211_LEDS
1008         bool led_registered;
1009         char led_name[32];
1010         struct led_classdev led_cdev;
1011 #endif
1012
1013 #ifdef CONFIG_ATH9K_DEBUGFS
1014         struct ath9k_debug debug;
1015 #endif
1016         struct delayed_work tx_complete_work;
1017         struct delayed_work hw_pll_work;
1018         struct timer_list sleep_timer;
1019
1020 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1021         struct ath_btcoex btcoex;
1022         struct ath_mci_coex mci_coex;
1023         struct work_struct mci_work;
1024 #endif
1025
1026         struct ath_descdma txsdma;
1027
1028         struct ath_ant_comb ant_comb;
1029         u8 ant_tx, ant_rx;
1030         struct dfs_pattern_detector *dfs_detector;
1031         u64 dfs_prev_pulse_ts;
1032         u32 wow_enabled;
1033
1034         struct ath_spec_scan_priv spec_priv;
1035
1036         struct ieee80211_vif *tx99_vif;
1037         struct sk_buff *tx99_skb;
1038         bool tx99_state;
1039         s16 tx99_power;
1040
1041 #ifdef CONFIG_ATH9K_WOW
1042         u32 wow_intr_before_sleep;
1043         bool force_wow;
1044 #endif
1045
1046 #ifdef CONFIG_ATH9K_HWRNG
1047         u32 rng_last;
1048         struct task_struct *rng_task;
1049 #endif
1050 };
1051
1052 /********/
1053 /* TX99 */
1054 /********/
1055
1056 #ifdef CONFIG_ATH9K_TX99
1057 void ath9k_tx99_init_debug(struct ath_softc *sc);
1058 int ath9k_tx99_send(struct ath_softc *sc, struct sk_buff *skb,
1059                     struct ath_tx_control *txctl);
1060 #else
1061 static inline void ath9k_tx99_init_debug(struct ath_softc *sc)
1062 {
1063 }
1064 static inline int ath9k_tx99_send(struct ath_softc *sc,
1065                                   struct sk_buff *skb,
1066                                   struct ath_tx_control *txctl)
1067 {
1068         return 0;
1069 }
1070 #endif /* CONFIG_ATH9K_TX99 */
1071
1072 /***************************/
1073 /* Random Number Generator */
1074 /***************************/
1075 #ifdef CONFIG_ATH9K_HWRNG
1076 void ath9k_rng_start(struct ath_softc *sc);
1077 void ath9k_rng_stop(struct ath_softc *sc);
1078 #else
1079 static inline void ath9k_rng_start(struct ath_softc *sc)
1080 {
1081 }
1082
1083 static inline void ath9k_rng_stop(struct ath_softc *sc)
1084 {
1085 }
1086 #endif
1087
1088 static inline void ath_read_cachesize(struct ath_common *common, int *csz)
1089 {
1090         common->bus_ops->read_cachesize(common, csz);
1091 }
1092
1093 void ath9k_tasklet(unsigned long data);
1094 int ath_cabq_update(struct ath_softc *);
1095 u8 ath9k_parse_mpdudensity(u8 mpdudensity);
1096 irqreturn_t ath_isr(int irq, void *dev);
1097 int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan);
1098 void ath_cancel_work(struct ath_softc *sc);
1099 void ath_restart_work(struct ath_softc *sc);
1100 int ath9k_init_device(u16 devid, struct ath_softc *sc,
1101                     const struct ath_bus_ops *bus_ops);
1102 void ath9k_deinit_device(struct ath_softc *sc);
1103 void ath9k_reload_chainmask_settings(struct ath_softc *sc);
1104 u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate);
1105 void ath_start_rfkill_poll(struct ath_softc *sc);
1106 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw);
1107 void ath9k_ps_wakeup(struct ath_softc *sc);
1108 void ath9k_ps_restore(struct ath_softc *sc);
1109
1110 #ifdef CONFIG_ATH9K_PCI
1111 int ath_pci_init(void);
1112 void ath_pci_exit(void);
1113 #else
1114 static inline int ath_pci_init(void) { return 0; };
1115 static inline void ath_pci_exit(void) {};
1116 #endif
1117
1118 #ifdef CONFIG_ATH9K_AHB
1119 int ath_ahb_init(void);
1120 void ath_ahb_exit(void);
1121 #else
1122 static inline int ath_ahb_init(void) { return 0; };
1123 static inline void ath_ahb_exit(void) {};
1124 #endif
1125
1126 #endif /* ATH9K_H */