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 34 struct ath_node; 35 struct ath_vif; 36 37 extern struct ieee80211_ops ath9k_ops; 38 extern int ath9k_modparam_nohwcrypt; 39 extern int ath9k_led_blink; 40 extern bool is_ath9k_unloaded; 41 extern int ath9k_use_chanctx; 42 extern int ath9k_use_msi; 43 44 /*************************/ 45 /* Descriptor Management */ 46 /*************************/ 47 48 #define ATH_TXSTATUS_RING_SIZE 512 49 50 /* Macro to expand scalars to 64-bit objects */ 51 #define ito64(x) (sizeof(x) == 1) ? \ 52 (((unsigned long long int)(x)) & (0xff)) : \ 53 (sizeof(x) == 2) ? \ 54 (((unsigned long long int)(x)) & 0xffff) : \ 55 ((sizeof(x) == 4) ? \ 56 (((unsigned long long int)(x)) & 0xffffffff) : \ 57 (unsigned long long int)(x)) 58 59 #define ATH_TXBUF_RESET(_bf) do { \ 60 (_bf)->bf_lastbf = NULL; \ 61 (_bf)->bf_next = NULL; \ 62 memset(&((_bf)->bf_state), 0, \ 63 sizeof(struct ath_buf_state)); \ 64 } while (0) 65 66 #define DS2PHYS(_dd, _ds) \ 67 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 68 #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) 69 #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) 70 71 struct ath_descdma { 72 void *dd_desc; 73 dma_addr_t dd_desc_paddr; 74 u32 dd_desc_len; 75 }; 76 77 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, 78 struct list_head *head, const char *name, 79 int nbuf, int ndesc, bool is_tx); 80 81 /***********/ 82 /* RX / TX */ 83 /***********/ 84 85 #define ATH_TXQ_SETUP(sc, i) ((sc)->tx.txqsetup & (1<<i)) 86 87 /* increment with wrap-around */ 88 #define INCR(_l, _sz) do { \ 89 (_l)++; \ 90 (_l) &= ((_sz) - 1); \ 91 } while (0) 92 93 #define ATH_RXBUF 512 94 #define ATH_TXBUF 512 95 #define ATH_TXBUF_RESERVE 5 96 #define ATH_TXMAXTRY 13 97 #define ATH_MAX_SW_RETRIES 30 98 99 #define TID_TO_WME_AC(_tid) \ 100 ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE : \ 101 (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK : \ 102 (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI : \ 103 IEEE80211_AC_VO) 104 105 #define ATH_AGGR_DELIM_SZ 4 106 #define ATH_AGGR_MINPLEN 256 /* in bytes, minimum packet length */ 107 /* number of delimiters for encryption padding */ 108 #define ATH_AGGR_ENCRYPTDELIM 10 109 /* minimum h/w qdepth to be sustained to maximize aggregation */ 110 #define ATH_AGGR_MIN_QDEPTH 2 111 /* minimum h/w qdepth for non-aggregated traffic */ 112 #define ATH_NON_AGGR_MIN_QDEPTH 8 113 #define ATH_HW_CHECK_POLL_INT 1000 114 #define ATH_TXFIFO_DEPTH 8 115 #define ATH_TX_ERROR 0x01 116 117 /* Stop tx traffic 1ms before the GO goes away */ 118 #define ATH_P2P_PS_STOP_TIME 1000 119 120 #define IEEE80211_SEQ_SEQ_SHIFT 4 121 #define IEEE80211_SEQ_MAX 4096 122 #define IEEE80211_WEP_IVLEN 3 123 #define IEEE80211_WEP_KIDLEN 1 124 #define IEEE80211_WEP_CRCLEN 4 125 #define IEEE80211_MAX_MPDU_LEN (3840 + FCS_LEN + \ 126 (IEEE80211_WEP_IVLEN + \ 127 IEEE80211_WEP_KIDLEN + \ 128 IEEE80211_WEP_CRCLEN)) 129 130 /* return whether a bit at index _n in bitmap _bm is set 131 * _sz is the size of the bitmap */ 132 #define ATH_BA_ISSET(_bm, _n) (((_n) < (WME_BA_BMP_SIZE)) && \ 133 ((_bm)[(_n) >> 5] & (1 << ((_n) & 31)))) 134 135 /* return block-ack bitmap index given sequence and starting sequence */ 136 #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1)) 137 138 /* return the seqno for _start + _offset */ 139 #define ATH_BA_INDEX2SEQ(_seq, _offset) (((_seq) + (_offset)) & (IEEE80211_SEQ_MAX - 1)) 140 141 /* returns delimiter padding required given the packet length */ 142 #define ATH_AGGR_GET_NDELIM(_len) \ 143 (((_len) >= ATH_AGGR_MINPLEN) ? 0 : \ 144 DIV_ROUND_UP(ATH_AGGR_MINPLEN - (_len), ATH_AGGR_DELIM_SZ)) 145 146 #define BAW_WITHIN(_start, _bawsz, _seqno) \ 147 ((((_seqno) - (_start)) & 4095) < (_bawsz)) 148 149 #define ATH_AN_2_TID(_an, _tidno) ath_node_to_tid(_an, _tidno) 150 151 #define IS_HT_RATE(rate) (rate & 0x80) 152 #define IS_CCK_RATE(rate) ((rate >= 0x18) && (rate <= 0x1e)) 153 #define IS_OFDM_RATE(rate) ((rate >= 0x8) && (rate <= 0xf)) 154 155 enum { 156 WLAN_RC_PHY_OFDM, 157 WLAN_RC_PHY_CCK, 158 }; 159 160 struct ath_txq { 161 int mac80211_qnum; /* mac80211 queue number, -1 means not mac80211 Q */ 162 u32 axq_qnum; /* ath9k hardware queue number */ 163 void *axq_link; 164 struct list_head axq_q; 165 spinlock_t axq_lock; 166 u32 axq_depth; 167 u32 axq_ampdu_depth; 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 : 6; 183 u8 dyn_smps : 1; 184 u8 baw_tracked : 1; 185 u8 tx_power; 186 enum ath9k_key_type keytype:2; 187 }; 188 189 struct ath_rxbuf { 190 struct list_head list; 191 struct sk_buff *bf_mpdu; 192 void *bf_desc; 193 dma_addr_t bf_daddr; 194 dma_addr_t bf_buf_addr; 195 }; 196 197 /** 198 * enum buffer_type - Buffer type flags 199 * 200 * @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX) 201 * @BUF_AGGR: Indicates whether the buffer can be aggregated 202 * (used in aggregation scheduling) 203 */ 204 enum buffer_type { 205 BUF_AMPDU = BIT(0), 206 BUF_AGGR = BIT(1), 207 }; 208 209 #define bf_isampdu(bf) (bf->bf_state.bf_type & BUF_AMPDU) 210 #define bf_isaggr(bf) (bf->bf_state.bf_type & BUF_AGGR) 211 212 struct ath_buf_state { 213 u8 bf_type; 214 u8 bfs_paprd; 215 u8 ndelim; 216 bool stale; 217 u16 seqno; 218 unsigned long bfs_paprd_timestamp; 219 }; 220 221 struct ath_buf { 222 struct list_head list; 223 struct ath_buf *bf_lastbf; /* last buf of this unit (a frame or 224 an aggregate) */ 225 struct ath_buf *bf_next; /* next subframe in the aggregate */ 226 struct sk_buff *bf_mpdu; /* enclosing frame structure */ 227 void *bf_desc; /* virtual addr of desc */ 228 dma_addr_t bf_daddr; /* physical addr of desc */ 229 dma_addr_t bf_buf_addr; /* physical addr of data buffer, for DMA */ 230 struct ieee80211_tx_rate rates[4]; 231 struct ath_buf_state bf_state; 232 }; 233 234 struct ath_atx_tid { 235 struct list_head list; 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 void ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid); 253 254 struct ath_node { 255 struct ath_softc *sc; 256 struct ieee80211_sta *sta; /* station struct we're part of */ 257 struct ieee80211_vif *vif; /* interface with which we're associated */ 258 259 u16 maxampdu; 260 u8 mpdudensity; 261 s8 ps_key; 262 263 bool sleeping; 264 bool no_ps_filter; 265 266 #ifdef CONFIG_ATH9K_STATION_STATISTICS 267 struct ath_rx_rate_stats rx_rate_stats; 268 #endif 269 u8 key_idx[4]; 270 271 int ackto; 272 struct list_head list; 273 }; 274 275 struct ath_tx_control { 276 struct ath_txq *txq; 277 struct ath_node *an; 278 struct ieee80211_sta *sta; 279 u8 paprd; 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 u16 max_aggr_framelen[IEEE80211_NUM_ACS][4][32]; 297 }; 298 299 struct ath_rx_edma { 300 struct sk_buff_head rx_fifo; 301 u32 rx_fifo_hwsize; 302 }; 303 304 struct ath_rx { 305 u8 defant; 306 u8 rxotherant; 307 bool discard_next; 308 u32 *rxlink; 309 u32 num_pkts; 310 struct list_head rxbuf; 311 struct ath_descdma rxdma; 312 struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX]; 313 314 struct ath_rxbuf *buf_hold; 315 struct sk_buff *frag; 316 317 u32 ampdu_ref; 318 }; 319 320 /*******************/ 321 /* Channel Context */ 322 /*******************/ 323 324 struct ath_acq { 325 struct list_head acq_new; 326 struct list_head acq_old; 327 spinlock_t lock; 328 }; 329 330 struct ath_chanctx { 331 struct cfg80211_chan_def chandef; 332 struct list_head vifs; 333 struct ath_acq acq[IEEE80211_NUM_ACS]; 334 int hw_queue_base; 335 336 /* do not dereference, use for comparison only */ 337 struct ieee80211_vif *primary_sta; 338 339 struct ath_beacon_config beacon; 340 struct ath9k_hw_cal_data caldata; 341 struct timespec64 tsf_ts; 342 u64 tsf_val; 343 u32 last_beacon; 344 345 int flush_timeout; 346 u16 txpower; 347 u16 cur_txpower; 348 bool offchannel; 349 bool stopped; 350 bool active; 351 bool assigned; 352 bool switch_after_beacon; 353 354 short nvifs; 355 short nvifs_assigned; 356 unsigned int rxfilter; 357 }; 358 359 enum ath_chanctx_event { 360 ATH_CHANCTX_EVENT_BEACON_PREPARE, 361 ATH_CHANCTX_EVENT_BEACON_SENT, 362 ATH_CHANCTX_EVENT_TSF_TIMER, 363 ATH_CHANCTX_EVENT_BEACON_RECEIVED, 364 ATH_CHANCTX_EVENT_AUTHORIZED, 365 ATH_CHANCTX_EVENT_SWITCH, 366 ATH_CHANCTX_EVENT_ASSIGN, 367 ATH_CHANCTX_EVENT_UNASSIGN, 368 ATH_CHANCTX_EVENT_CHANGE, 369 ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL, 370 }; 371 372 enum ath_chanctx_state { 373 ATH_CHANCTX_STATE_IDLE, 374 ATH_CHANCTX_STATE_WAIT_FOR_BEACON, 375 ATH_CHANCTX_STATE_WAIT_FOR_TIMER, 376 ATH_CHANCTX_STATE_SWITCH, 377 ATH_CHANCTX_STATE_FORCE_ACTIVE, 378 }; 379 380 struct ath_chanctx_sched { 381 bool beacon_pending; 382 bool beacon_adjust; 383 bool offchannel_pending; 384 bool wait_switch; 385 bool force_noa_update; 386 bool extend_absence; 387 bool mgd_prepare_tx; 388 enum ath_chanctx_state state; 389 u8 beacon_miss; 390 391 u32 next_tbtt; 392 u32 switch_start_time; 393 unsigned int offchannel_duration; 394 unsigned int channel_switch_time; 395 396 /* backup, in case the hardware timer fails */ 397 struct timer_list timer; 398 }; 399 400 enum ath_offchannel_state { 401 ATH_OFFCHANNEL_IDLE, 402 ATH_OFFCHANNEL_PROBE_SEND, 403 ATH_OFFCHANNEL_PROBE_WAIT, 404 ATH_OFFCHANNEL_SUSPEND, 405 ATH_OFFCHANNEL_ROC_START, 406 ATH_OFFCHANNEL_ROC_WAIT, 407 ATH_OFFCHANNEL_ROC_DONE, 408 }; 409 410 enum ath_roc_complete_reason { 411 ATH_ROC_COMPLETE_EXPIRE, 412 ATH_ROC_COMPLETE_ABORT, 413 ATH_ROC_COMPLETE_CANCEL, 414 }; 415 416 struct ath_offchannel { 417 struct ath_chanctx chan; 418 struct timer_list timer; 419 struct cfg80211_scan_request *scan_req; 420 struct ieee80211_vif *scan_vif; 421 int scan_idx; 422 enum ath_offchannel_state state; 423 struct ieee80211_channel *roc_chan; 424 struct ieee80211_vif *roc_vif; 425 int roc_duration; 426 int duration; 427 }; 428 429 static inline struct ath_atx_tid * 430 ath_node_to_tid(struct ath_node *an, u8 tidno) 431 { 432 struct ieee80211_sta *sta = an->sta; 433 struct ieee80211_vif *vif = an->vif; 434 struct ieee80211_txq *txq; 435 436 BUG_ON(!vif); 437 if (sta) 438 txq = sta->txq[tidno % ARRAY_SIZE(sta->txq)]; 439 else 440 txq = vif->txq; 441 442 return (struct ath_atx_tid *) txq->drv_priv; 443 } 444 445 #define case_rtn_string(val) case val: return #val 446 447 #define ath_for_each_chanctx(_sc, _ctx) \ 448 for (ctx = &sc->chanctx[0]; \ 449 ctx <= &sc->chanctx[ARRAY_SIZE(sc->chanctx) - 1]; \ 450 ctx++) 451 452 void ath_chanctx_init(struct ath_softc *sc); 453 void ath_chanctx_set_channel(struct ath_softc *sc, struct ath_chanctx *ctx, 454 struct cfg80211_chan_def *chandef); 455 456 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 457 458 static inline struct ath_chanctx * 459 ath_chanctx_get(struct ieee80211_chanctx_conf *ctx) 460 { 461 struct ath_chanctx **ptr = (void *) ctx->drv_priv; 462 return *ptr; 463 } 464 465 bool ath9k_is_chanctx_enabled(void); 466 void ath9k_fill_chanctx_ops(void); 467 void ath9k_init_channel_context(struct ath_softc *sc); 468 void ath9k_offchannel_init(struct ath_softc *sc); 469 void ath9k_deinit_channel_context(struct ath_softc *sc); 470 int ath9k_init_p2p(struct ath_softc *sc); 471 void ath9k_deinit_p2p(struct ath_softc *sc); 472 void ath9k_p2p_remove_vif(struct ath_softc *sc, 473 struct ieee80211_vif *vif); 474 void ath9k_p2p_beacon_sync(struct ath_softc *sc); 475 void ath9k_p2p_bss_info_changed(struct ath_softc *sc, 476 struct ieee80211_vif *vif); 477 void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp, 478 struct sk_buff *skb); 479 void ath9k_p2p_ps_timer(void *priv); 480 void ath9k_chanctx_wake_queues(struct ath_softc *sc, struct ath_chanctx *ctx); 481 void ath9k_chanctx_stop_queues(struct ath_softc *sc, struct ath_chanctx *ctx); 482 void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx); 483 484 void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, 485 enum ath_chanctx_event ev); 486 void ath_chanctx_beacon_sent_ev(struct ath_softc *sc, 487 enum ath_chanctx_event ev); 488 void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif, 489 enum ath_chanctx_event ev); 490 void ath_chanctx_set_next(struct ath_softc *sc, bool force); 491 void ath_offchannel_next(struct ath_softc *sc); 492 void ath_scan_complete(struct ath_softc *sc, bool abort); 493 void ath_roc_complete(struct ath_softc *sc, 494 enum ath_roc_complete_reason reason); 495 struct ath_chanctx* ath_is_go_chanctx_present(struct ath_softc *sc); 496 497 #else 498 499 static inline bool ath9k_is_chanctx_enabled(void) 500 { 501 return false; 502 } 503 static inline void ath9k_fill_chanctx_ops(void) 504 { 505 } 506 static inline void ath9k_init_channel_context(struct ath_softc *sc) 507 { 508 } 509 static inline void ath9k_offchannel_init(struct ath_softc *sc) 510 { 511 } 512 static inline void ath9k_deinit_channel_context(struct ath_softc *sc) 513 { 514 } 515 static inline void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, 516 enum ath_chanctx_event ev) 517 { 518 } 519 static inline void ath_chanctx_beacon_sent_ev(struct ath_softc *sc, 520 enum ath_chanctx_event ev) 521 { 522 } 523 static inline void ath_chanctx_event(struct ath_softc *sc, 524 struct ieee80211_vif *vif, 525 enum ath_chanctx_event ev) 526 { 527 } 528 static inline int ath9k_init_p2p(struct ath_softc *sc) 529 { 530 return 0; 531 } 532 static inline void ath9k_deinit_p2p(struct ath_softc *sc) 533 { 534 } 535 static inline void ath9k_p2p_remove_vif(struct ath_softc *sc, 536 struct ieee80211_vif *vif) 537 { 538 } 539 static inline void ath9k_p2p_beacon_sync(struct ath_softc *sc) 540 { 541 } 542 static inline void ath9k_p2p_bss_info_changed(struct ath_softc *sc, 543 struct ieee80211_vif *vif) 544 { 545 } 546 static inline void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp, 547 struct sk_buff *skb) 548 { 549 } 550 static inline void ath9k_p2p_ps_timer(struct ath_softc *sc) 551 { 552 } 553 static inline void ath9k_chanctx_wake_queues(struct ath_softc *sc, 554 struct ath_chanctx *ctx) 555 { 556 } 557 static inline void ath9k_chanctx_stop_queues(struct ath_softc *sc, 558 struct ath_chanctx *ctx) 559 { 560 } 561 static inline void ath_chanctx_check_active(struct ath_softc *sc, 562 struct ath_chanctx *ctx) 563 { 564 } 565 566 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 567 568 static inline void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq) 569 { 570 spin_lock_bh(&txq->axq_lock); 571 } 572 static inline void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq) 573 { 574 spin_unlock_bh(&txq->axq_lock); 575 } 576 577 void ath_startrecv(struct ath_softc *sc); 578 bool ath_stoprecv(struct ath_softc *sc); 579 u32 ath_calcrxfilter(struct ath_softc *sc); 580 int ath_rx_init(struct ath_softc *sc, int nbufs); 581 void ath_rx_cleanup(struct ath_softc *sc); 582 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp); 583 struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype); 584 void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq); 585 void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq); 586 bool ath_drain_all_txq(struct ath_softc *sc); 587 void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq); 588 void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an); 589 void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an); 590 void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq); 591 void ath_txq_schedule_all(struct ath_softc *sc); 592 int ath_tx_init(struct ath_softc *sc, int nbufs); 593 int ath_txq_update(struct ath_softc *sc, int qnum, 594 struct ath9k_tx_queue_info *q); 595 u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen, 596 int width, int half_gi, bool shortPreamble); 597 void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop); 598 void ath_assign_seq(struct ath_common *common, struct sk_buff *skb); 599 int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, 600 struct ath_tx_control *txctl); 601 void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 602 struct sk_buff *skb); 603 void ath_tx_tasklet(struct ath_softc *sc); 604 void ath_tx_edma_tasklet(struct ath_softc *sc); 605 int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, 606 u16 tid, u16 *ssn); 607 void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); 608 609 void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an); 610 void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc, 611 struct ath_node *an); 612 void ath9k_release_buffered_frames(struct ieee80211_hw *hw, 613 struct ieee80211_sta *sta, 614 u16 tids, int nframes, 615 enum ieee80211_frame_release_type reason, 616 bool more_data); 617 void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue); 618 619 /********/ 620 /* VIFs */ 621 /********/ 622 623 #define P2P_DEFAULT_CTWIN 10 624 625 struct ath_vif { 626 struct list_head list; 627 628 u16 seq_no; 629 630 /* BSS info */ 631 u8 bssid[ETH_ALEN] __aligned(2); 632 u16 aid; 633 bool assoc; 634 635 struct ieee80211_vif *vif; 636 struct ath_node mcast_node; 637 int av_bslot; 638 __le64 tsf_adjust; /* TSF adjustment for staggered beacons */ 639 struct ath_buf *av_bcbuf; 640 struct ath_chanctx *chanctx; 641 642 /* P2P Client */ 643 struct ieee80211_noa_data noa; 644 645 /* P2P GO */ 646 u8 noa_index; 647 u32 offchannel_start; 648 u32 offchannel_duration; 649 650 /* These are used for both periodic and one-shot */ 651 u32 noa_start; 652 u32 noa_duration; 653 bool periodic_noa; 654 bool oneshot_noa; 655 }; 656 657 struct ath9k_vif_iter_data { 658 u8 hw_macaddr[ETH_ALEN]; /* address of the first vif */ 659 u8 mask[ETH_ALEN]; /* bssid mask */ 660 bool has_hw_macaddr; 661 u8 slottime; 662 bool beacons; 663 664 int naps; /* number of AP vifs */ 665 int nmeshes; /* number of mesh vifs */ 666 int nstations; /* number of station vifs */ 667 int nadhocs; /* number of adhoc vifs */ 668 int nocbs; /* number of OCB vifs */ 669 int nbcnvifs; /* number of beaconing vifs */ 670 struct ieee80211_vif *primary_beacon_vif; 671 struct ieee80211_vif *primary_sta; 672 }; 673 674 void ath9k_calculate_iter_data(struct ath_softc *sc, 675 struct ath_chanctx *ctx, 676 struct ath9k_vif_iter_data *iter_data); 677 void ath9k_calculate_summary_state(struct ath_softc *sc, 678 struct ath_chanctx *ctx); 679 void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif); 680 681 /*******************/ 682 /* Beacon Handling */ 683 /*******************/ 684 685 /* 686 * Regardless of the number of beacons we stagger, (i.e. regardless of the 687 * number of BSSIDs) if a given beacon does not go out even after waiting this 688 * number of beacon intervals, the game's up. 689 */ 690 #define BSTUCK_THRESH 9 691 #define ATH_BCBUF 8 692 #define ATH_DEFAULT_BINTVAL 100 /* TU */ 693 #define ATH_DEFAULT_BMISS_LIMIT 10 694 695 #define TSF_TO_TU(_h,_l) \ 696 ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10)) 697 698 struct ath_beacon { 699 enum { 700 OK, /* no change needed */ 701 UPDATE, /* update pending */ 702 COMMIT /* beacon sent, commit change */ 703 } updateslot; /* slot time update fsm */ 704 705 u32 beaconq; 706 u32 bmisscnt; 707 struct ieee80211_vif *bslot[ATH_BCBUF]; 708 int slottime; 709 int slotupdate; 710 struct ath_descdma bdma; 711 struct ath_txq *cabq; 712 struct list_head bbuf; 713 714 bool tx_processed; 715 bool tx_last; 716 }; 717 718 void ath9k_beacon_tasklet(struct tasklet_struct *t); 719 void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *main_vif, 720 bool beacons); 721 void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif); 722 void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif); 723 void ath9k_beacon_ensure_primary_slot(struct ath_softc *sc); 724 void ath9k_set_beacon(struct ath_softc *sc); 725 bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif); 726 void ath9k_csa_update(struct ath_softc *sc); 727 728 /*******************/ 729 /* Link Monitoring */ 730 /*******************/ 731 732 #define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */ 733 #define ATH_AP_SHORT_CALINTERVAL 100 /* 100 ms */ 734 #define ATH_ANI_POLLINTERVAL_OLD 100 /* 100 ms */ 735 #define ATH_ANI_POLLINTERVAL_NEW 1000 /* 1000 ms */ 736 #define ATH_LONG_CALINTERVAL_INT 1000 /* 1000 ms */ 737 #define ATH_LONG_CALINTERVAL 30000 /* 30 seconds */ 738 #define ATH_RESTART_CALINTERVAL 1200000 /* 20 minutes */ 739 #define ATH_ANI_MAX_SKIP_COUNT 10 740 #define ATH_PAPRD_TIMEOUT 100 /* msecs */ 741 #define ATH_PLL_WORK_INTERVAL 100 742 743 void ath_hw_check_work(struct work_struct *work); 744 void ath_reset_work(struct work_struct *work); 745 bool ath_hw_check(struct ath_softc *sc); 746 void ath_hw_pll_work(struct work_struct *work); 747 void ath_paprd_calibrate(struct work_struct *work); 748 void ath_ani_calibrate(struct timer_list *t); 749 void ath_start_ani(struct ath_softc *sc); 750 void ath_stop_ani(struct ath_softc *sc); 751 void ath_check_ani(struct ath_softc *sc); 752 int ath_update_survey_stats(struct ath_softc *sc); 753 void ath_update_survey_nf(struct ath_softc *sc, int channel); 754 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type); 755 void ath_ps_full_sleep(struct timer_list *t); 756 void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop, 757 bool sw_pending, bool timeout_override); 758 759 /**********/ 760 /* BTCOEX */ 761 /**********/ 762 763 #define ATH_DUMP_BTCOEX(_s, _val) \ 764 do { \ 765 len += scnprintf(buf + len, size - len, \ 766 "%20s : %10d\n", _s, (_val)); \ 767 } while (0) 768 769 enum bt_op_flags { 770 BT_OP_PRIORITY_DETECTED, 771 BT_OP_SCAN, 772 }; 773 774 struct ath_btcoex { 775 spinlock_t btcoex_lock; 776 struct timer_list period_timer; /* Timer for BT period */ 777 struct timer_list no_stomp_timer; 778 u32 bt_priority_cnt; 779 unsigned long bt_priority_time; 780 unsigned long op_flags; 781 int bt_stomp_type; /* Types of BT stomping */ 782 u32 btcoex_no_stomp; /* in msec */ 783 u32 btcoex_period; /* in msec */ 784 u32 btscan_no_stomp; /* in msec */ 785 u32 duty_cycle; 786 u32 bt_wait_time; 787 int rssi_count; 788 struct ath_mci_profile mci; 789 u8 stomp_audio; 790 }; 791 792 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT 793 int ath9k_init_btcoex(struct ath_softc *sc); 794 void ath9k_deinit_btcoex(struct ath_softc *sc); 795 void ath9k_start_btcoex(struct ath_softc *sc); 796 void ath9k_stop_btcoex(struct ath_softc *sc); 797 void ath9k_btcoex_timer_resume(struct ath_softc *sc); 798 void ath9k_btcoex_timer_pause(struct ath_softc *sc); 799 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status); 800 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen); 801 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc); 802 int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size); 803 #else 804 static inline int ath9k_init_btcoex(struct ath_softc *sc) 805 { 806 return 0; 807 } 808 static inline void ath9k_deinit_btcoex(struct ath_softc *sc) 809 { 810 } 811 static inline void ath9k_start_btcoex(struct ath_softc *sc) 812 { 813 } 814 static inline void ath9k_stop_btcoex(struct ath_softc *sc) 815 { 816 } 817 static inline void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, 818 u32 status) 819 { 820 } 821 static inline u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, 822 u32 max_4ms_framelen) 823 { 824 return 0; 825 } 826 static inline void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc) 827 { 828 } 829 static inline int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size) 830 { 831 return 0; 832 } 833 #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ 834 835 /********************/ 836 /* LED Control */ 837 /********************/ 838 839 #define ATH_LED_PIN_DEF 1 840 #define ATH_LED_PIN_9287 8 841 #define ATH_LED_PIN_9300 10 842 #define ATH_LED_PIN_9485 6 843 #define ATH_LED_PIN_9462 4 844 845 #ifdef CONFIG_MAC80211_LEDS 846 void ath_init_leds(struct ath_softc *sc); 847 void ath_deinit_leds(struct ath_softc *sc); 848 #else 849 static inline void ath_init_leds(struct ath_softc *sc) 850 { 851 } 852 853 static inline void ath_deinit_leds(struct ath_softc *sc) 854 { 855 } 856 #endif 857 858 /************************/ 859 /* Wake on Wireless LAN */ 860 /************************/ 861 862 #ifdef CONFIG_ATH9K_WOW 863 void ath9k_init_wow(struct ieee80211_hw *hw); 864 void ath9k_deinit_wow(struct ieee80211_hw *hw); 865 int ath9k_suspend(struct ieee80211_hw *hw, 866 struct cfg80211_wowlan *wowlan); 867 int ath9k_resume(struct ieee80211_hw *hw); 868 void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled); 869 #else 870 static inline void ath9k_init_wow(struct ieee80211_hw *hw) 871 { 872 } 873 static inline void ath9k_deinit_wow(struct ieee80211_hw *hw) 874 { 875 } 876 static inline int ath9k_suspend(struct ieee80211_hw *hw, 877 struct cfg80211_wowlan *wowlan) 878 { 879 return 0; 880 } 881 static inline int ath9k_resume(struct ieee80211_hw *hw) 882 { 883 return 0; 884 } 885 static inline void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled) 886 { 887 } 888 #endif /* CONFIG_ATH9K_WOW */ 889 890 /*******************************/ 891 /* Antenna diversity/combining */ 892 /*******************************/ 893 894 #define ATH_ANT_RX_CURRENT_SHIFT 4 895 #define ATH_ANT_RX_MAIN_SHIFT 2 896 #define ATH_ANT_RX_MASK 0x3 897 898 #define ATH_ANT_DIV_COMB_SHORT_SCAN_INTR 50 899 #define ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT 0x100 900 #define ATH_ANT_DIV_COMB_MAX_PKTCOUNT 0x200 901 #define ATH_ANT_DIV_COMB_INIT_COUNT 95 902 #define ATH_ANT_DIV_COMB_MAX_COUNT 100 903 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30 904 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20 905 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO_LOW_RSSI 50 906 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2_LOW_RSSI 50 907 908 #define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4 909 #define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2 910 #define ATH_ANT_DIV_COMB_LNA1_DELTA_LOW 2 911 912 struct ath_ant_comb { 913 u16 count; 914 u16 total_pkt_count; 915 bool scan; 916 bool scan_not_start; 917 int main_total_rssi; 918 int alt_total_rssi; 919 int alt_recv_cnt; 920 int main_recv_cnt; 921 int rssi_lna1; 922 int rssi_lna2; 923 int rssi_add; 924 int rssi_sub; 925 int rssi_first; 926 int rssi_second; 927 int rssi_third; 928 int ant_ratio; 929 int ant_ratio2; 930 bool alt_good; 931 int quick_scan_cnt; 932 enum ath9k_ant_div_comb_lna_conf main_conf; 933 enum ath9k_ant_div_comb_lna_conf first_quick_scan_conf; 934 enum ath9k_ant_div_comb_lna_conf second_quick_scan_conf; 935 bool first_ratio; 936 bool second_ratio; 937 unsigned long scan_start_time; 938 939 /* 940 * Card-specific config values. 941 */ 942 int low_rssi_thresh; 943 int fast_div_bias; 944 }; 945 946 void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs); 947 948 /********************/ 949 /* Main driver core */ 950 /********************/ 951 952 #define ATH9K_PCI_CUS198 0x0001 953 #define ATH9K_PCI_CUS230 0x0002 954 #define ATH9K_PCI_CUS217 0x0004 955 #define ATH9K_PCI_CUS252 0x0008 956 #define ATH9K_PCI_WOW 0x0010 957 #define ATH9K_PCI_BT_ANT_DIV 0x0020 958 #define ATH9K_PCI_D3_L1_WAR 0x0040 959 #define ATH9K_PCI_AR9565_1ANT 0x0080 960 #define ATH9K_PCI_AR9565_2ANT 0x0100 961 #define ATH9K_PCI_NO_PLL_PWRSAVE 0x0200 962 #define ATH9K_PCI_KILLER 0x0400 963 #define ATH9K_PCI_LED_ACT_HI 0x0800 964 965 /* 966 * Default cache line size, in bytes. 967 * Used when PCI device not fully initialized by bootrom/BIOS 968 */ 969 #define DEFAULT_CACHELINE 32 970 #define ATH_CABQ_READY_TIME 80 /* % of beacon interval */ 971 #define ATH_TXPOWER_MAX 100 /* .5 dBm units */ 972 #define MAX_GTT_CNT 5 973 974 /* Powersave flags */ 975 #define PS_WAIT_FOR_BEACON BIT(0) 976 #define PS_WAIT_FOR_CAB BIT(1) 977 #define PS_WAIT_FOR_PSPOLL_DATA BIT(2) 978 #define PS_WAIT_FOR_TX_ACK BIT(3) 979 #define PS_BEACON_SYNC BIT(4) 980 #define PS_WAIT_FOR_ANI BIT(5) 981 982 #define ATH9K_NUM_CHANCTX 2 /* supports 2 operating channels */ 983 984 struct ath_softc { 985 struct ieee80211_hw *hw; 986 struct device *dev; 987 988 struct survey_info *cur_survey; 989 struct survey_info survey[ATH9K_NUM_CHANNELS]; 990 991 spinlock_t intr_lock; 992 struct tasklet_struct intr_tq; 993 struct tasklet_struct bcon_tasklet; 994 struct ath_hw *sc_ah; 995 void __iomem *mem; 996 int irq; 997 spinlock_t sc_serial_rw; 998 spinlock_t sc_pm_lock; 999 spinlock_t sc_pcu_lock; 1000 struct mutex mutex; 1001 struct work_struct paprd_work; 1002 struct work_struct hw_reset_work; 1003 struct completion paprd_complete; 1004 wait_queue_head_t tx_wait; 1005 1006 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 1007 struct work_struct chanctx_work; 1008 struct ath_gen_timer *p2p_ps_timer; 1009 struct ath_vif *p2p_ps_vif; 1010 struct ath_chanctx_sched sched; 1011 struct ath_offchannel offchannel; 1012 struct ath_chanctx *next_chan; 1013 struct completion go_beacon; 1014 struct timespec64 last_event_time; 1015 #endif 1016 1017 unsigned long driver_data; 1018 1019 u8 gtt_cnt; 1020 u32 intrstatus; 1021 u16 ps_flags; /* PS_* */ 1022 bool ps_enabled; 1023 bool ps_idle; 1024 short nbcnvifs; 1025 unsigned long ps_usecount; 1026 1027 struct ath_rx rx; 1028 struct ath_tx tx; 1029 struct ath_beacon beacon; 1030 1031 struct cfg80211_chan_def cur_chandef; 1032 struct ath_chanctx chanctx[ATH9K_NUM_CHANCTX]; 1033 struct ath_chanctx *cur_chan; 1034 spinlock_t chan_lock; 1035 1036 #ifdef CONFIG_MAC80211_LEDS 1037 bool led_registered; 1038 char led_name[32]; 1039 struct led_classdev led_cdev; 1040 #endif 1041 1042 #ifdef CONFIG_ATH9K_DEBUGFS 1043 struct ath9k_debug debug; 1044 #endif 1045 struct delayed_work hw_check_work; 1046 struct delayed_work hw_pll_work; 1047 struct timer_list sleep_timer; 1048 1049 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT 1050 struct ath_btcoex btcoex; 1051 struct ath_mci_coex mci_coex; 1052 struct work_struct mci_work; 1053 #endif 1054 1055 struct ath_descdma txsdma; 1056 1057 struct ath_ant_comb ant_comb; 1058 u8 ant_tx, ant_rx; 1059 struct dfs_pattern_detector *dfs_detector; 1060 u64 dfs_prev_pulse_ts; 1061 u32 wow_enabled; 1062 1063 struct ath_spec_scan_priv spec_priv; 1064 1065 struct ieee80211_vif *tx99_vif; 1066 struct sk_buff *tx99_skb; 1067 bool tx99_state; 1068 s16 tx99_power; 1069 1070 #ifdef CONFIG_ATH9K_WOW 1071 u32 wow_intr_before_sleep; 1072 bool force_wow; 1073 #endif 1074 1075 #ifdef CONFIG_ATH9K_HWRNG 1076 struct hwrng rng_ops; 1077 u32 rng_last; 1078 char rng_name[sizeof("ath9k_65535")]; 1079 #endif 1080 }; 1081 1082 /********/ 1083 /* TX99 */ 1084 /********/ 1085 1086 #ifdef CONFIG_ATH9K_TX99 1087 void ath9k_tx99_init_debug(struct ath_softc *sc); 1088 int ath9k_tx99_send(struct ath_softc *sc, struct sk_buff *skb, 1089 struct ath_tx_control *txctl); 1090 #else 1091 static inline void ath9k_tx99_init_debug(struct ath_softc *sc) 1092 { 1093 } 1094 static inline int ath9k_tx99_send(struct ath_softc *sc, 1095 struct sk_buff *skb, 1096 struct ath_tx_control *txctl) 1097 { 1098 return 0; 1099 } 1100 #endif /* CONFIG_ATH9K_TX99 */ 1101 1102 /***************************/ 1103 /* Random Number Generator */ 1104 /***************************/ 1105 #ifdef CONFIG_ATH9K_HWRNG 1106 void ath9k_rng_start(struct ath_softc *sc); 1107 void ath9k_rng_stop(struct ath_softc *sc); 1108 #else 1109 static inline void ath9k_rng_start(struct ath_softc *sc) 1110 { 1111 } 1112 1113 static inline void ath9k_rng_stop(struct ath_softc *sc) 1114 { 1115 } 1116 #endif 1117 1118 static inline void ath_read_cachesize(struct ath_common *common, int *csz) 1119 { 1120 common->bus_ops->read_cachesize(common, csz); 1121 } 1122 1123 void ath9k_tasklet(struct tasklet_struct *t); 1124 int ath_cabq_update(struct ath_softc *); 1125 u8 ath9k_parse_mpdudensity(u8 mpdudensity); 1126 irqreturn_t ath_isr(int irq, void *dev); 1127 int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan); 1128 void ath_cancel_work(struct ath_softc *sc); 1129 void ath_restart_work(struct ath_softc *sc); 1130 int ath9k_init_device(u16 devid, struct ath_softc *sc, 1131 const struct ath_bus_ops *bus_ops); 1132 void ath9k_deinit_device(struct ath_softc *sc); 1133 u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate); 1134 void ath_start_rfkill_poll(struct ath_softc *sc); 1135 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw); 1136 void ath9k_ps_wakeup(struct ath_softc *sc); 1137 void ath9k_ps_restore(struct ath_softc *sc); 1138 1139 #ifdef CONFIG_ATH9K_PCI 1140 int ath_pci_init(void); 1141 void ath_pci_exit(void); 1142 #else 1143 static inline int ath_pci_init(void) { return 0; }; 1144 static inline void ath_pci_exit(void) {}; 1145 #endif 1146 1147 #ifdef CONFIG_ATH9K_AHB 1148 int ath_ahb_init(void); 1149 void ath_ahb_exit(void); 1150 #else 1151 static inline int ath_ahb_init(void) { return 0; }; 1152 static inline void ath_ahb_exit(void) {}; 1153 #endif 1154 1155 #endif /* ATH9K_H */ 1156