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/kstrtox.h> 24#include <linux/leds.h> 25#include <linux/completion.h> 26#include <linux/time.h> 27#include <linux/hw_random.h> 28 29#include "common.h" 30#include "debug.h" 31#include "mci.h" 32#include "dfs.h" 33 34struct ath_node; 35struct ath_vif; 36 37extern struct ieee80211_ops ath9k_ops; 38extern int ath9k_modparam_nohwcrypt; 39extern int ath9k_led_blink; 40extern bool is_ath9k_unloaded; 41extern int ath9k_use_chanctx; 42 43/*************************/ 44/* Descriptor Management */ 45/*************************/ 46 47#define ATH_TXSTATUS_RING_SIZE 512 48 49/* Macro to expand scalars to 64-bit objects */ 50#define ito64(x) (sizeof(x) == 1) ? \ 51 (((unsigned long long int)(x)) & (0xff)) : \ 52 (sizeof(x) == 2) ? \ 53 (((unsigned long long int)(x)) & 0xffff) : \ 54 ((sizeof(x) == 4) ? \ 55 (((unsigned long long int)(x)) & 0xffffffff) : \ 56 (unsigned long long int)(x)) 57 58#define ATH_TXBUF_RESET(_bf) do { \ 59 (_bf)->bf_lastbf = NULL; \ 60 (_bf)->bf_next = NULL; \ 61 memset(&((_bf)->bf_state), 0, \ 62 sizeof(struct ath_buf_state)); \ 63 } while (0) 64 65#define DS2PHYS(_dd, _ds) \ 66 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 67#define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) 68#define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) 69 70struct ath_descdma { 71 void *dd_desc; 72 dma_addr_t dd_desc_paddr; 73 u32 dd_desc_len; 74}; 75 76int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, 77 struct list_head *head, const char *name, 78 int nbuf, int ndesc, bool is_tx); 79 80/***********/ 81/* RX / TX */ 82/***********/ 83 84#define ATH_TXQ_SETUP(sc, i) ((sc)->tx.txqsetup & (1<<i)) 85 86/* increment with wrap-around */ 87#define INCR(_l, _sz) do { \ 88 (_l)++; \ 89 (_l) &= ((_sz) - 1); \ 90 } while (0) 91 92#define ATH_RXBUF 512 93#define ATH_TXBUF 512 94#define ATH_TXBUF_RESERVE 5 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_HW_CHECK_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) ath_node_to_tid(_an, _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 154enum { 155 WLAN_RC_PHY_OFDM, 156 WLAN_RC_PHY_CCK, 157}; 158 159struct 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 axq_tx_inprogress; 168 struct list_head txq_fifo[ATH_TXFIFO_DEPTH]; 169 u8 txq_headidx; 170 u8 txq_tailidx; 171 int pending_frames; 172 struct sk_buff_head complete_q; 173}; 174 175struct ath_frame_info { 176 struct ath_buf *bf; 177 u16 framelen; 178 s8 txq; 179 u8 keyix; 180 u8 rtscts_rate; 181 u8 retries : 6; 182 u8 dyn_smps : 1; 183 u8 baw_tracked : 1; 184 u8 tx_power; 185 enum ath9k_key_type keytype:2; 186}; 187 188struct 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 */ 203enum 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 211struct 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 220struct 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 233struct ath_atx_tid { 234 struct list_head list; 235 struct sk_buff_head retry_q; 236 struct ath_node *an; 237 struct ath_txq *txq; 238 unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)]; 239 u16 seq_start; 240 u16 seq_next; 241 u16 baw_size; 242 u8 tidno; 243 int baw_head; /* first un-acked tx buffer */ 244 int baw_tail; /* next unused tx buffer slot */ 245 246 s8 bar_index; 247 bool active; 248 bool clear_ps_filter; 249}; 250 251void ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid); 252 253struct ath_node { 254 struct ath_softc *sc; 255 struct ieee80211_sta *sta; /* station struct we're part of */ 256 struct ieee80211_vif *vif; /* interface with which we're associated */ 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 int ackto; 271 struct list_head list; 272}; 273 274struct ath_tx_control { 275 struct ath_txq *txq; 276 struct ath_node *an; 277 struct ieee80211_sta *sta; 278 u8 paprd; 279}; 280 281 282/** 283 * @txq_map: Index is mac80211 queue number. This is 284 * not necessarily the same as the hardware queue number 285 * (axq_qnum). 286 */ 287struct ath_tx { 288 u32 txqsetup; 289 spinlock_t txbuflock; 290 struct list_head txbuf; 291 struct ath_txq txq[ATH9K_NUM_TX_QUEUES]; 292 struct ath_descdma txdma; 293 struct ath_txq *txq_map[IEEE80211_NUM_ACS]; 294 struct ath_txq *uapsdq; 295 u16 max_aggr_framelen[IEEE80211_NUM_ACS][4][32]; 296}; 297 298struct ath_rx_edma { 299 struct sk_buff_head rx_fifo; 300 u32 rx_fifo_hwsize; 301}; 302 303struct ath_rx { 304 u8 defant; 305 u8 rxotherant; 306 bool discard_next; 307 u32 *rxlink; 308 u32 num_pkts; 309 struct list_head rxbuf; 310 struct ath_descdma rxdma; 311 struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX]; 312 313 struct ath_rxbuf *buf_hold; 314 struct sk_buff *frag; 315 316 u32 ampdu_ref; 317}; 318 319/*******************/ 320/* Channel Context */ 321/*******************/ 322 323struct ath_acq { 324 struct list_head acq_new; 325 struct list_head acq_old; 326 spinlock_t lock; 327}; 328 329struct ath_chanctx { 330 struct cfg80211_chan_def chandef; 331 struct list_head vifs; 332 struct ath_acq acq[IEEE80211_NUM_ACS]; 333 int hw_queue_base; 334 335 /* do not dereference, use for comparison only */ 336 struct ieee80211_vif *primary_sta; 337 338 struct ath_beacon_config beacon; 339 struct ath9k_hw_cal_data caldata; 340 struct timespec64 tsf_ts; 341 u64 tsf_val; 342 u32 last_beacon; 343 344 int flush_timeout; 345 u16 txpower; 346 u16 cur_txpower; 347 bool offchannel; 348 bool stopped; 349 bool active; 350 bool assigned; 351 bool switch_after_beacon; 352 353 short nvifs; 354 short nvifs_assigned; 355 unsigned int rxfilter; 356}; 357 358enum ath_chanctx_event { 359 ATH_CHANCTX_EVENT_BEACON_PREPARE, 360 ATH_CHANCTX_EVENT_BEACON_SENT, 361 ATH_CHANCTX_EVENT_TSF_TIMER, 362 ATH_CHANCTX_EVENT_BEACON_RECEIVED, 363 ATH_CHANCTX_EVENT_AUTHORIZED, 364 ATH_CHANCTX_EVENT_SWITCH, 365 ATH_CHANCTX_EVENT_ASSIGN, 366 ATH_CHANCTX_EVENT_UNASSIGN, 367 ATH_CHANCTX_EVENT_CHANGE, 368 ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL, 369}; 370 371enum ath_chanctx_state { 372 ATH_CHANCTX_STATE_IDLE, 373 ATH_CHANCTX_STATE_WAIT_FOR_BEACON, 374 ATH_CHANCTX_STATE_WAIT_FOR_TIMER, 375 ATH_CHANCTX_STATE_SWITCH, 376 ATH_CHANCTX_STATE_FORCE_ACTIVE, 377}; 378 379struct ath_chanctx_sched { 380 bool beacon_pending; 381 bool beacon_adjust; 382 bool offchannel_pending; 383 bool wait_switch; 384 bool force_noa_update; 385 bool extend_absence; 386 bool mgd_prepare_tx; 387 enum ath_chanctx_state state; 388 u8 beacon_miss; 389 390 u32 next_tbtt; 391 u32 switch_start_time; 392 unsigned int offchannel_duration; 393 unsigned int channel_switch_time; 394 395 /* backup, in case the hardware timer fails */ 396 struct timer_list timer; 397}; 398 399enum ath_offchannel_state { 400 ATH_OFFCHANNEL_IDLE, 401 ATH_OFFCHANNEL_PROBE_SEND, 402 ATH_OFFCHANNEL_PROBE_WAIT, 403 ATH_OFFCHANNEL_SUSPEND, 404 ATH_OFFCHANNEL_ROC_START, 405 ATH_OFFCHANNEL_ROC_WAIT, 406 ATH_OFFCHANNEL_ROC_DONE, 407}; 408 409enum ath_roc_complete_reason { 410 ATH_ROC_COMPLETE_EXPIRE, 411 ATH_ROC_COMPLETE_ABORT, 412 ATH_ROC_COMPLETE_CANCEL, 413}; 414 415struct ath_offchannel { 416 struct ath_chanctx chan; 417 struct timer_list timer; 418 struct cfg80211_scan_request *scan_req; 419 struct ieee80211_vif *scan_vif; 420 int scan_idx; 421 enum ath_offchannel_state state; 422 struct ieee80211_channel *roc_chan; 423 struct ieee80211_vif *roc_vif; 424 int roc_duration; 425 int duration; 426}; 427 428static inline struct ath_atx_tid * 429ath_node_to_tid(struct ath_node *an, u8 tidno) 430{ 431 struct ieee80211_sta *sta = an->sta; 432 struct ieee80211_vif *vif = an->vif; 433 struct ieee80211_txq *txq; 434 435 BUG_ON(!vif); 436 if (sta) 437 txq = sta->txq[tidno % ARRAY_SIZE(sta->txq)]; 438 else 439 txq = vif->txq; 440 441 return (struct ath_atx_tid *) txq->drv_priv; 442} 443 444#define case_rtn_string(val) case val: return #val 445 446#define ath_for_each_chanctx(_sc, _ctx) \ 447 for (ctx = &sc->chanctx[0]; \ 448 ctx <= &sc->chanctx[ARRAY_SIZE(sc->chanctx) - 1]; \ 449 ctx++) 450 451void ath_chanctx_init(struct ath_softc *sc); 452void ath_chanctx_set_channel(struct ath_softc *sc, struct ath_chanctx *ctx, 453 struct cfg80211_chan_def *chandef); 454 455#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 456 457static inline struct ath_chanctx * 458ath_chanctx_get(struct ieee80211_chanctx_conf *ctx) 459{ 460 struct ath_chanctx **ptr = (void *) ctx->drv_priv; 461 return *ptr; 462} 463 464bool ath9k_is_chanctx_enabled(void); 465void ath9k_fill_chanctx_ops(void); 466void ath9k_init_channel_context(struct ath_softc *sc); 467void ath9k_offchannel_init(struct ath_softc *sc); 468void ath9k_deinit_channel_context(struct ath_softc *sc); 469int ath9k_init_p2p(struct ath_softc *sc); 470void ath9k_deinit_p2p(struct ath_softc *sc); 471void ath9k_p2p_remove_vif(struct ath_softc *sc, 472 struct ieee80211_vif *vif); 473void ath9k_p2p_beacon_sync(struct ath_softc *sc); 474void ath9k_p2p_bss_info_changed(struct ath_softc *sc, 475 struct ieee80211_vif *vif); 476void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp, 477 struct sk_buff *skb); 478void ath9k_p2p_ps_timer(void *priv); 479void ath9k_chanctx_wake_queues(struct ath_softc *sc, struct ath_chanctx *ctx); 480void ath9k_chanctx_stop_queues(struct ath_softc *sc, struct ath_chanctx *ctx); 481void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx); 482 483void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, 484 enum ath_chanctx_event ev); 485void ath_chanctx_beacon_sent_ev(struct ath_softc *sc, 486 enum ath_chanctx_event ev); 487void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif, 488 enum ath_chanctx_event ev); 489void ath_chanctx_set_next(struct ath_softc *sc, bool force); 490void ath_offchannel_next(struct ath_softc *sc); 491void ath_scan_complete(struct ath_softc *sc, bool abort); 492void ath_roc_complete(struct ath_softc *sc, 493 enum ath_roc_complete_reason reason); 494struct ath_chanctx* ath_is_go_chanctx_present(struct ath_softc *sc); 495 496#else 497 498static inline bool ath9k_is_chanctx_enabled(void) 499{ 500 return false; 501} 502static inline void ath9k_fill_chanctx_ops(void) 503{ 504} 505static inline void ath9k_init_channel_context(struct ath_softc *sc) 506{ 507} 508static inline void ath9k_offchannel_init(struct ath_softc *sc) 509{ 510} 511static inline void ath9k_deinit_channel_context(struct ath_softc *sc) 512{ 513} 514static inline void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, 515 enum ath_chanctx_event ev) 516{ 517} 518static inline void ath_chanctx_beacon_sent_ev(struct ath_softc *sc, 519 enum ath_chanctx_event ev) 520{ 521} 522static inline void ath_chanctx_event(struct ath_softc *sc, 523 struct ieee80211_vif *vif, 524 enum ath_chanctx_event ev) 525{ 526} 527static inline int ath9k_init_p2p(struct ath_softc *sc) 528{ 529 return 0; 530} 531static inline void ath9k_deinit_p2p(struct ath_softc *sc) 532{ 533} 534static inline void ath9k_p2p_remove_vif(struct ath_softc *sc, 535 struct ieee80211_vif *vif) 536{ 537} 538static inline void ath9k_p2p_beacon_sync(struct ath_softc *sc) 539{ 540} 541static inline void ath9k_p2p_bss_info_changed(struct ath_softc *sc, 542 struct ieee80211_vif *vif) 543{ 544} 545static inline void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp, 546 struct sk_buff *skb) 547{ 548} 549static inline void ath9k_p2p_ps_timer(struct ath_softc *sc) 550{ 551} 552static inline void ath9k_chanctx_wake_queues(struct ath_softc *sc, 553 struct ath_chanctx *ctx) 554{ 555} 556static inline void ath9k_chanctx_stop_queues(struct ath_softc *sc, 557 struct ath_chanctx *ctx) 558{ 559} 560static inline void ath_chanctx_check_active(struct ath_softc *sc, 561 struct ath_chanctx *ctx) 562{ 563} 564 565#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 566 567static inline void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq) 568{ 569 spin_lock_bh(&txq->axq_lock); 570} 571static inline void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq) 572{ 573 spin_unlock_bh(&txq->axq_lock); 574} 575 576void ath_startrecv(struct ath_softc *sc); 577bool ath_stoprecv(struct ath_softc *sc); 578u32 ath_calcrxfilter(struct ath_softc *sc); 579int ath_rx_init(struct ath_softc *sc, int nbufs); 580void ath_rx_cleanup(struct ath_softc *sc); 581int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp); 582struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype); 583void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq); 584void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq); 585bool ath_drain_all_txq(struct ath_softc *sc); 586void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq); 587void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an); 588void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an); 589void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq); 590void ath_txq_schedule_all(struct ath_softc *sc); 591int ath_tx_init(struct ath_softc *sc, int nbufs); 592int ath_txq_update(struct ath_softc *sc, int qnum, 593 struct ath9k_tx_queue_info *q); 594u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen, 595 int width, int half_gi, bool shortPreamble); 596void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop); 597void ath_assign_seq(struct ath_common *common, struct sk_buff *skb); 598int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, 599 struct ath_tx_control *txctl); 600void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 601 struct sk_buff *skb); 602void ath_tx_tasklet(struct ath_softc *sc); 603void ath_tx_edma_tasklet(struct ath_softc *sc); 604int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, 605 u16 tid, u16 *ssn); 606void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); 607 608void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an); 609void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc, 610 struct ath_node *an); 611void ath9k_release_buffered_frames(struct ieee80211_hw *hw, 612 struct ieee80211_sta *sta, 613 u16 tids, int nframes, 614 enum ieee80211_frame_release_type reason, 615 bool more_data); 616void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue); 617 618/********/ 619/* VIFs */ 620/********/ 621 622#define P2P_DEFAULT_CTWIN 10 623 624struct ath_vif { 625 struct list_head list; 626 627 u16 seq_no; 628 629 /* BSS info */ 630 u8 bssid[ETH_ALEN] __aligned(2); 631 u16 aid; 632 bool assoc; 633 634 struct ieee80211_vif *vif; 635 struct ath_node mcast_node; 636 int av_bslot; 637 __le64 tsf_adjust; /* TSF adjustment for staggered beacons */ 638 struct ath_buf *av_bcbuf; 639 struct ath_chanctx *chanctx; 640 641 /* P2P Client */ 642 struct ieee80211_noa_data noa; 643 644 /* P2P GO */ 645 u8 noa_index; 646 u32 offchannel_start; 647 u32 offchannel_duration; 648 649 /* These are used for both periodic and one-shot */ 650 u32 noa_start; 651 u32 noa_duration; 652 bool periodic_noa; 653 bool oneshot_noa; 654}; 655 656struct ath9k_vif_iter_data { 657 u8 hw_macaddr[ETH_ALEN]; /* address of the first vif */ 658 u8 mask[ETH_ALEN]; /* bssid mask */ 659 bool has_hw_macaddr; 660 u8 slottime; 661 bool beacons; 662 663 int naps; /* number of AP vifs */ 664 int nmeshes; /* number of mesh vifs */ 665 int nstations; /* number of station vifs */ 666 int nadhocs; /* number of adhoc vifs */ 667 int nocbs; /* number of OCB vifs */ 668 int nbcnvifs; /* number of beaconing vifs */ 669 struct ieee80211_vif *primary_beacon_vif; 670 struct ieee80211_vif *primary_sta; 671}; 672 673void ath9k_calculate_iter_data(struct ath_softc *sc, 674 struct ath_chanctx *ctx, 675 struct ath9k_vif_iter_data *iter_data); 676void ath9k_calculate_summary_state(struct ath_softc *sc, 677 struct ath_chanctx *ctx); 678void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif); 679 680/*******************/ 681/* Beacon Handling */ 682/*******************/ 683 684/* 685 * Regardless of the number of beacons we stagger, (i.e. regardless of the 686 * number of BSSIDs) if a given beacon does not go out even after waiting this 687 * number of beacon intervals, the game's up. 688 */ 689#define BSTUCK_THRESH 9 690#define ATH_BCBUF 8 691#define ATH_DEFAULT_BINTVAL 100 /* TU */ 692#define ATH_DEFAULT_BMISS_LIMIT 10 693 694#define TSF_TO_TU(_h,_l) \ 695 ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10)) 696 697struct ath_beacon { 698 enum { 699 OK, /* no change needed */ 700 UPDATE, /* update pending */ 701 COMMIT /* beacon sent, commit change */ 702 } updateslot; /* slot time update fsm */ 703 704 u32 beaconq; 705 u32 bmisscnt; 706 struct ieee80211_vif *bslot[ATH_BCBUF]; 707 int slottime; 708 int slotupdate; 709 struct ath_descdma bdma; 710 struct ath_txq *cabq; 711 struct list_head bbuf; 712 713 bool tx_processed; 714 bool tx_last; 715}; 716 717void ath9k_beacon_tasklet(struct tasklet_struct *t); 718void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *main_vif, 719 bool beacons); 720void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif); 721void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif); 722void ath9k_beacon_ensure_primary_slot(struct ath_softc *sc); 723void ath9k_set_beacon(struct ath_softc *sc); 724bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif); 725void ath9k_csa_update(struct ath_softc *sc); 726 727/*******************/ 728/* Link Monitoring */ 729/*******************/ 730 731#define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */ 732#define ATH_AP_SHORT_CALINTERVAL 100 /* 100 ms */ 733#define ATH_ANI_POLLINTERVAL_OLD 100 /* 100 ms */ 734#define ATH_ANI_POLLINTERVAL_NEW 1000 /* 1000 ms */ 735#define ATH_LONG_CALINTERVAL_INT 1000 /* 1000 ms */ 736#define ATH_LONG_CALINTERVAL 30000 /* 30 seconds */ 737#define ATH_RESTART_CALINTERVAL 1200000 /* 20 minutes */ 738#define ATH_ANI_MAX_SKIP_COUNT 10 739#define ATH_PAPRD_TIMEOUT 100 /* msecs */ 740#define ATH_PLL_WORK_INTERVAL 100 741 742void ath_hw_check_work(struct work_struct *work); 743void ath_reset_work(struct work_struct *work); 744bool ath_hw_check(struct ath_softc *sc); 745void ath_hw_pll_work(struct work_struct *work); 746void ath_paprd_calibrate(struct work_struct *work); 747void ath_ani_calibrate(struct timer_list *t); 748void ath_start_ani(struct ath_softc *sc); 749void ath_stop_ani(struct ath_softc *sc); 750void ath_check_ani(struct ath_softc *sc); 751int ath_update_survey_stats(struct ath_softc *sc); 752void ath_update_survey_nf(struct ath_softc *sc, int channel); 753void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type); 754void ath_ps_full_sleep(struct timer_list *t); 755void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop, 756 bool sw_pending, bool timeout_override); 757 758/**********/ 759/* BTCOEX */ 760/**********/ 761 762#define ATH_DUMP_BTCOEX(_s, _val) \ 763 do { \ 764 len += scnprintf(buf + len, size - len, \ 765 "%20s : %10d\n", _s, (_val)); \ 766 } while (0) 767 768enum bt_op_flags { 769 BT_OP_PRIORITY_DETECTED, 770 BT_OP_SCAN, 771}; 772 773struct ath_btcoex { 774 spinlock_t btcoex_lock; 775 struct timer_list period_timer; /* Timer for BT period */ 776 struct timer_list no_stomp_timer; 777 u32 bt_priority_cnt; 778 unsigned long bt_priority_time; 779 unsigned long op_flags; 780 int bt_stomp_type; /* Types of BT stomping */ 781 u32 btcoex_no_stomp; /* in msec */ 782 u32 btcoex_period; /* in msec */ 783 u32 btscan_no_stomp; /* in msec */ 784 u32 duty_cycle; 785 u32 bt_wait_time; 786 int rssi_count; 787 struct ath_mci_profile mci; 788 u8 stomp_audio; 789}; 790 791#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT 792int ath9k_init_btcoex(struct ath_softc *sc); 793void ath9k_deinit_btcoex(struct ath_softc *sc); 794void ath9k_start_btcoex(struct ath_softc *sc); 795void ath9k_stop_btcoex(struct ath_softc *sc); 796void ath9k_btcoex_timer_resume(struct ath_softc *sc); 797void ath9k_btcoex_timer_pause(struct ath_softc *sc); 798void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status); 799u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen); 800void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc); 801int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size); 802#else 803static inline int ath9k_init_btcoex(struct ath_softc *sc) 804{ 805 return 0; 806} 807static inline void ath9k_deinit_btcoex(struct ath_softc *sc) 808{ 809} 810static inline void ath9k_start_btcoex(struct ath_softc *sc) 811{ 812} 813static inline void ath9k_stop_btcoex(struct ath_softc *sc) 814{ 815} 816static inline void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, 817 u32 status) 818{ 819} 820static inline u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, 821 u32 max_4ms_framelen) 822{ 823 return 0; 824} 825static inline void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc) 826{ 827} 828static inline int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size) 829{ 830 return 0; 831} 832#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ 833 834/********************/ 835/* LED Control */ 836/********************/ 837 838#define ATH_LED_PIN_DEF 1 839#define ATH_LED_PIN_9287 8 840#define ATH_LED_PIN_9300 10 841#define ATH_LED_PIN_9485 6 842#define ATH_LED_PIN_9462 4 843 844#ifdef CONFIG_MAC80211_LEDS 845void ath_init_leds(struct ath_softc *sc); 846void ath_deinit_leds(struct ath_softc *sc); 847#else 848static inline void ath_init_leds(struct ath_softc *sc) 849{ 850} 851 852static inline void ath_deinit_leds(struct ath_softc *sc) 853{ 854} 855#endif 856 857/************************/ 858/* Wake on Wireless LAN */ 859/************************/ 860 861#ifdef CONFIG_ATH9K_WOW 862void ath9k_init_wow(struct ieee80211_hw *hw); 863void ath9k_deinit_wow(struct ieee80211_hw *hw); 864int ath9k_suspend(struct ieee80211_hw *hw, 865 struct cfg80211_wowlan *wowlan); 866int ath9k_resume(struct ieee80211_hw *hw); 867void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled); 868#else 869static inline void ath9k_init_wow(struct ieee80211_hw *hw) 870{ 871} 872static inline void ath9k_deinit_wow(struct ieee80211_hw *hw) 873{ 874} 875static inline int ath9k_suspend(struct ieee80211_hw *hw, 876 struct cfg80211_wowlan *wowlan) 877{ 878 return 0; 879} 880static inline int ath9k_resume(struct ieee80211_hw *hw) 881{ 882 return 0; 883} 884static inline void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled) 885{ 886} 887#endif /* CONFIG_ATH9K_WOW */ 888 889/*******************************/ 890/* Antenna diversity/combining */ 891/*******************************/ 892 893#define ATH_ANT_RX_CURRENT_SHIFT 4 894#define ATH_ANT_RX_MAIN_SHIFT 2 895#define ATH_ANT_RX_MASK 0x3 896 897#define ATH_ANT_DIV_COMB_SHORT_SCAN_INTR 50 898#define ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT 0x100 899#define ATH_ANT_DIV_COMB_MAX_PKTCOUNT 0x200 900#define ATH_ANT_DIV_COMB_INIT_COUNT 95 901#define ATH_ANT_DIV_COMB_MAX_COUNT 100 902#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30 903#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20 904#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO_LOW_RSSI 50 905#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2_LOW_RSSI 50 906 907#define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4 908#define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2 909#define ATH_ANT_DIV_COMB_LNA1_DELTA_LOW 2 910 911struct ath_ant_comb { 912 u16 count; 913 u16 total_pkt_count; 914 bool scan; 915 bool scan_not_start; 916 int main_total_rssi; 917 int alt_total_rssi; 918 int alt_recv_cnt; 919 int main_recv_cnt; 920 int rssi_lna1; 921 int rssi_lna2; 922 int rssi_add; 923 int rssi_sub; 924 int rssi_first; 925 int rssi_second; 926 int rssi_third; 927 int ant_ratio; 928 int ant_ratio2; 929 bool alt_good; 930 int quick_scan_cnt; 931 enum ath9k_ant_div_comb_lna_conf main_conf; 932 enum ath9k_ant_div_comb_lna_conf first_quick_scan_conf; 933 enum ath9k_ant_div_comb_lna_conf second_quick_scan_conf; 934 bool first_ratio; 935 bool second_ratio; 936 unsigned long scan_start_time; 937 938 /* 939 * Card-specific config values. 940 */ 941 int low_rssi_thresh; 942 int fast_div_bias; 943}; 944 945void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs); 946 947/********************/ 948/* Main driver core */ 949/********************/ 950 951#define ATH9K_PCI_CUS198 0x0001 952#define ATH9K_PCI_CUS230 0x0002 953#define ATH9K_PCI_CUS217 0x0004 954#define ATH9K_PCI_CUS252 0x0008 955#define ATH9K_PCI_WOW 0x0010 956#define ATH9K_PCI_BT_ANT_DIV 0x0020 957#define ATH9K_PCI_D3_L1_WAR 0x0040 958#define ATH9K_PCI_AR9565_1ANT 0x0080 959#define ATH9K_PCI_AR9565_2ANT 0x0100 960#define ATH9K_PCI_NO_PLL_PWRSAVE 0x0200 961#define ATH9K_PCI_KILLER 0x0400 962#define ATH9K_PCI_LED_ACT_HI 0x0800 963 964/* 965 * Default cache line size, in bytes. 966 * Used when PCI device not fully initialized by bootrom/BIOS 967*/ 968#define DEFAULT_CACHELINE 32 969#define ATH_CABQ_READY_TIME 80 /* % of beacon interval */ 970#define ATH_TXPOWER_MAX 100 /* .5 dBm units */ 971#define MAX_GTT_CNT 5 972 973/* Powersave flags */ 974#define PS_WAIT_FOR_BEACON BIT(0) 975#define PS_WAIT_FOR_CAB BIT(1) 976#define PS_WAIT_FOR_PSPOLL_DATA BIT(2) 977#define PS_WAIT_FOR_TX_ACK BIT(3) 978#define PS_BEACON_SYNC BIT(4) 979#define PS_WAIT_FOR_ANI BIT(5) 980 981#define ATH9K_NUM_CHANCTX 2 /* supports 2 operating channels */ 982 983struct ath_softc { 984 struct ieee80211_hw *hw; 985 struct device *dev; 986 987 struct survey_info *cur_survey; 988 struct survey_info survey[ATH9K_NUM_CHANNELS]; 989 990 spinlock_t intr_lock; 991 struct tasklet_struct intr_tq; 992 struct tasklet_struct bcon_tasklet; 993 struct ath_hw *sc_ah; 994 void __iomem *mem; 995 int irq; 996 spinlock_t sc_serial_rw; 997 spinlock_t sc_pm_lock; 998 spinlock_t sc_pcu_lock; 999 struct mutex mutex; 1000 struct work_struct paprd_work; 1001 struct work_struct hw_reset_work; 1002 struct completion paprd_complete; 1003 wait_queue_head_t tx_wait; 1004 1005#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 1006 struct work_struct chanctx_work; 1007 struct ath_gen_timer *p2p_ps_timer; 1008 struct ath_vif *p2p_ps_vif; 1009 struct ath_chanctx_sched sched; 1010 struct ath_offchannel offchannel; 1011 struct ath_chanctx *next_chan; 1012 struct completion go_beacon; 1013 struct timespec64 last_event_time; 1014#endif 1015 1016 unsigned long driver_data; 1017 1018 u8 gtt_cnt; 1019 u32 intrstatus; 1020 u16 ps_flags; /* PS_* */ 1021 bool ps_enabled; 1022 bool ps_idle; 1023 short nbcnvifs; 1024 unsigned long ps_usecount; 1025 1026 struct ath_rx rx; 1027 struct ath_tx tx; 1028 struct ath_beacon beacon; 1029 1030 struct cfg80211_chan_def cur_chandef; 1031 struct ath_chanctx chanctx[ATH9K_NUM_CHANCTX]; 1032 struct ath_chanctx *cur_chan; 1033 spinlock_t chan_lock; 1034 1035#ifdef CONFIG_MAC80211_LEDS 1036 bool led_registered; 1037 char led_name[32]; 1038 struct led_classdev led_cdev; 1039#endif 1040 1041#ifdef CONFIG_ATH9K_DEBUGFS 1042 struct ath9k_debug debug; 1043#endif 1044 struct delayed_work hw_check_work; 1045 struct delayed_work hw_pll_work; 1046 struct timer_list sleep_timer; 1047 1048#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT 1049 struct ath_btcoex btcoex; 1050 struct ath_mci_coex mci_coex; 1051 struct work_struct mci_work; 1052#endif 1053 1054 struct ath_descdma txsdma; 1055 1056 struct ath_ant_comb ant_comb; 1057 u8 ant_tx, ant_rx; 1058 struct dfs_pattern_detector *dfs_detector; 1059 u64 dfs_prev_pulse_ts; 1060 u32 wow_enabled; 1061 1062 struct ath_spec_scan_priv spec_priv; 1063 1064 struct ieee80211_vif *tx99_vif; 1065 struct sk_buff *tx99_skb; 1066 bool tx99_state; 1067 s16 tx99_power; 1068 1069#ifdef CONFIG_ATH9K_WOW 1070 u32 wow_intr_before_sleep; 1071 bool force_wow; 1072#endif 1073 1074#ifdef CONFIG_ATH9K_HWRNG 1075 struct hwrng rng_ops; 1076 u32 rng_last; 1077 char rng_name[sizeof("ath9k_65535")]; 1078#endif 1079}; 1080 1081/********/ 1082/* TX99 */ 1083/********/ 1084 1085#ifdef CONFIG_ATH9K_TX99 1086void ath9k_tx99_init_debug(struct ath_softc *sc); 1087int ath9k_tx99_send(struct ath_softc *sc, struct sk_buff *skb, 1088 struct ath_tx_control *txctl); 1089#else 1090static inline void ath9k_tx99_init_debug(struct ath_softc *sc) 1091{ 1092} 1093static inline int ath9k_tx99_send(struct ath_softc *sc, 1094 struct sk_buff *skb, 1095 struct ath_tx_control *txctl) 1096{ 1097 return 0; 1098} 1099#endif /* CONFIG_ATH9K_TX99 */ 1100 1101/***************************/ 1102/* Random Number Generator */ 1103/***************************/ 1104#ifdef CONFIG_ATH9K_HWRNG 1105void ath9k_rng_start(struct ath_softc *sc); 1106void ath9k_rng_stop(struct ath_softc *sc); 1107#else 1108static inline void ath9k_rng_start(struct ath_softc *sc) 1109{ 1110} 1111 1112static inline void ath9k_rng_stop(struct ath_softc *sc) 1113{ 1114} 1115#endif 1116 1117static inline void ath_read_cachesize(struct ath_common *common, int *csz) 1118{ 1119 common->bus_ops->read_cachesize(common, csz); 1120} 1121 1122void ath9k_tasklet(struct tasklet_struct *t); 1123int ath_cabq_update(struct ath_softc *); 1124u8 ath9k_parse_mpdudensity(u8 mpdudensity); 1125irqreturn_t ath_isr(int irq, void *dev); 1126int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan); 1127void ath_cancel_work(struct ath_softc *sc); 1128void ath_restart_work(struct ath_softc *sc); 1129int ath9k_init_device(u16 devid, struct ath_softc *sc, 1130 const struct ath_bus_ops *bus_ops); 1131void ath9k_deinit_device(struct ath_softc *sc); 1132u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate); 1133void ath_start_rfkill_poll(struct ath_softc *sc); 1134void ath9k_rfkill_poll_state(struct ieee80211_hw *hw); 1135void ath9k_ps_wakeup(struct ath_softc *sc); 1136void ath9k_ps_restore(struct ath_softc *sc); 1137 1138#ifdef CONFIG_ATH9K_PCI 1139int ath_pci_init(void); 1140void ath_pci_exit(void); 1141#else 1142static inline int ath_pci_init(void) { return 0; }; 1143static inline void ath_pci_exit(void) {}; 1144#endif 1145 1146#ifdef CONFIG_ATH9K_AHB 1147int ath_ahb_init(void); 1148void ath_ahb_exit(void); 1149#else 1150static inline int ath_ahb_init(void) { return 0; }; 1151static inline void ath_ahb_exit(void) {}; 1152#endif 1153 1154#endif /* ATH9K_H */ 1155