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 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 */ 287 struct 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 }; 297 298 struct ath_rx_edma { 299 struct sk_buff_head rx_fifo; 300 u32 rx_fifo_hwsize; 301 }; 302 303 struct 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 /*******************/ 322 323 struct ath_acq { 324 struct list_head acq_new; 325 struct list_head acq_old; 326 spinlock_t lock; 327 }; 328 329 struct 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 ktime_t 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 }; 357 358 enum 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 }; 370 371 enum 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 }; 378 379 struct 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 }; 398 399 enum 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 }; 408 409 enum ath_roc_complete_reason { 410 ATH_ROC_COMPLETE_EXPIRE, 411 ATH_ROC_COMPLETE_ABORT, 412 ATH_ROC_COMPLETE_CANCEL, 413 }; 414 415 struct 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 }; 427 428 static inline struct ath_atx_tid * 429 ath_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++) 450 451 void ath_chanctx_init(struct ath_softc *sc); 452 void 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 456 457 static inline struct ath_chanctx * 458 ath_chanctx_get(struct ieee80211_chanctx_conf *ctx) 459 { 460 struct ath_chanctx **ptr = (void *) ctx->drv_priv; 461 return *ptr; 462 } 463 464 bool ath9k_is_chanctx_enabled(void); 465 void ath9k_fill_chanctx_ops(void); 466 void ath9k_init_channel_context(struct ath_softc *sc); 467 void ath9k_offchannel_init(struct ath_softc *sc); 468 void ath9k_deinit_channel_context(struct ath_softc *sc); 469 int ath9k_init_p2p(struct ath_softc *sc); 470 void ath9k_deinit_p2p(struct ath_softc *sc); 471 void ath9k_p2p_remove_vif(struct ath_softc *sc, 472 struct ieee80211_vif *vif); 473 void ath9k_p2p_beacon_sync(struct ath_softc *sc); 474 void ath9k_p2p_bss_info_changed(struct ath_softc *sc, 475 struct ieee80211_vif *vif); 476 void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp, 477 struct sk_buff *skb); 478 void ath9k_p2p_ps_timer(void *priv); 479 void ath9k_chanctx_wake_queues(struct ath_softc *sc, struct ath_chanctx *ctx); 480 void ath9k_chanctx_stop_queues(struct ath_softc *sc, struct ath_chanctx *ctx); 481 void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx); 482 483 void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, 484 enum ath_chanctx_event ev); 485 void ath_chanctx_beacon_sent_ev(struct ath_softc *sc, 486 enum ath_chanctx_event ev); 487 void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif, 488 enum ath_chanctx_event ev); 489 void ath_chanctx_set_next(struct ath_softc *sc, bool force); 490 void ath_offchannel_next(struct ath_softc *sc); 491 void ath_scan_complete(struct ath_softc *sc, bool abort); 492 void ath_roc_complete(struct ath_softc *sc, 493 enum ath_roc_complete_reason reason); 494 struct ath_chanctx* ath_is_go_chanctx_present(struct ath_softc *sc); 495 496 #else 497 498 static inline bool ath9k_is_chanctx_enabled(void) 499 { 500 return false; 501 } 502 static inline void ath9k_fill_chanctx_ops(void) 503 { 504 } 505 static inline void ath9k_init_channel_context(struct ath_softc *sc) 506 { 507 } 508 static inline void ath9k_offchannel_init(struct ath_softc *sc) 509 { 510 } 511 static inline void ath9k_deinit_channel_context(struct ath_softc *sc) 512 { 513 } 514 static inline void ath_chanctx_beacon_recv_ev(struct ath_softc *sc, 515 enum ath_chanctx_event ev) 516 { 517 } 518 static inline void ath_chanctx_beacon_sent_ev(struct ath_softc *sc, 519 enum ath_chanctx_event ev) 520 { 521 } 522 static inline void ath_chanctx_event(struct ath_softc *sc, 523 struct ieee80211_vif *vif, 524 enum ath_chanctx_event ev) 525 { 526 } 527 static inline int ath9k_init_p2p(struct ath_softc *sc) 528 { 529 return 0; 530 } 531 static inline void ath9k_deinit_p2p(struct ath_softc *sc) 532 { 533 } 534 static inline void ath9k_p2p_remove_vif(struct ath_softc *sc, 535 struct ieee80211_vif *vif) 536 { 537 } 538 static inline void ath9k_p2p_beacon_sync(struct ath_softc *sc) 539 { 540 } 541 static inline void ath9k_p2p_bss_info_changed(struct ath_softc *sc, 542 struct ieee80211_vif *vif) 543 { 544 } 545 static inline void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp, 546 struct sk_buff *skb) 547 { 548 } 549 static inline void ath9k_p2p_ps_timer(struct ath_softc *sc) 550 { 551 } 552 static inline void ath9k_chanctx_wake_queues(struct ath_softc *sc, 553 struct ath_chanctx *ctx) 554 { 555 } 556 static inline void ath9k_chanctx_stop_queues(struct ath_softc *sc, 557 struct ath_chanctx *ctx) 558 { 559 } 560 static inline void ath_chanctx_check_active(struct ath_softc *sc, 561 struct ath_chanctx *ctx) 562 { 563 } 564 565 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 566 567 static inline void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq) 568 { 569 spin_lock_bh(&txq->axq_lock); 570 } 571 static inline void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq) 572 { 573 spin_unlock_bh(&txq->axq_lock); 574 } 575 576 void ath_startrecv(struct ath_softc *sc); 577 bool ath_stoprecv(struct ath_softc *sc); 578 u32 ath_calcrxfilter(struct ath_softc *sc); 579 int ath_rx_init(struct ath_softc *sc, int nbufs); 580 void ath_rx_cleanup(struct ath_softc *sc); 581 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp); 582 struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype); 583 void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq); 584 void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq); 585 bool ath_drain_all_txq(struct ath_softc *sc); 586 void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq); 587 void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an); 588 void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an); 589 void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq); 590 void ath_txq_schedule_all(struct ath_softc *sc); 591 int ath_tx_init(struct ath_softc *sc, int nbufs); 592 int ath_txq_update(struct ath_softc *sc, int qnum, 593 struct ath9k_tx_queue_info *q); 594 u32 ath_pkt_duration(u8 rix, int pktlen, int width, 595 int half_gi, bool shortPreamble); 596 void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop); 597 void ath_assign_seq(struct ath_common *common, struct sk_buff *skb); 598 int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, 599 struct ath_tx_control *txctl); 600 void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 601 struct sk_buff *skb); 602 void ath_tx_tasklet(struct ath_softc *sc); 603 void ath_tx_edma_tasklet(struct ath_softc *sc); 604 int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, 605 u16 tid, u16 *ssn); 606 void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); 607 608 void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an); 609 void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc, 610 struct ath_node *an); 611 void 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); 616 void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue); 617 618 /********/ 619 /* VIFs */ 620 /********/ 621 622 #define P2P_DEFAULT_CTWIN 10 623 624 struct 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 }; 655 656 struct 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 }; 672 673 void ath9k_calculate_iter_data(struct ath_softc *sc, 674 struct ath_chanctx *ctx, 675 struct ath9k_vif_iter_data *iter_data); 676 void ath9k_calculate_summary_state(struct ath_softc *sc, 677 struct ath_chanctx *ctx); 678 void 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)) 696 697 struct 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 }; 716 717 void ath9k_beacon_tasklet(struct tasklet_struct *t); 718 void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *main_vif, 719 bool beacons); 720 void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif); 721 void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif); 722 void ath9k_beacon_ensure_primary_slot(struct ath_softc *sc); 723 void ath9k_set_beacon(struct ath_softc *sc); 724 bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif); 725 void 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 100 741 742 void ath_hw_check_work(struct work_struct *work); 743 void ath_reset_work(struct work_struct *work); 744 bool ath_hw_check(struct ath_softc *sc); 745 void ath_hw_pll_work(struct work_struct *work); 746 void ath_paprd_calibrate(struct work_struct *work); 747 void ath_ani_calibrate(struct timer_list *t); 748 void ath_start_ani(struct ath_softc *sc); 749 void ath_stop_ani(struct ath_softc *sc); 750 void ath_check_ani(struct ath_softc *sc); 751 int ath_update_survey_stats(struct ath_softc *sc); 752 void ath_update_survey_nf(struct ath_softc *sc, int channel); 753 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type); 754 void ath_ps_full_sleep(struct timer_list *t); 755 void __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) 767 768 enum bt_op_flags { 769 BT_OP_PRIORITY_DETECTED, 770 BT_OP_SCAN, 771 }; 772 773 struct 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 792 int ath9k_init_btcoex(struct ath_softc *sc); 793 void ath9k_deinit_btcoex(struct ath_softc *sc); 794 void ath9k_start_btcoex(struct ath_softc *sc); 795 void ath9k_stop_btcoex(struct ath_softc *sc); 796 void ath9k_btcoex_timer_resume(struct ath_softc *sc); 797 void ath9k_btcoex_timer_pause(struct ath_softc *sc); 798 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status); 799 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen); 800 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc); 801 int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size); 802 #else 803 static inline int ath9k_init_btcoex(struct ath_softc *sc) 804 { 805 return 0; 806 } 807 static inline void ath9k_deinit_btcoex(struct ath_softc *sc) 808 { 809 } 810 static inline void ath9k_start_btcoex(struct ath_softc *sc) 811 { 812 } 813 static inline void ath9k_stop_btcoex(struct ath_softc *sc) 814 { 815 } 816 static inline void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, 817 u32 status) 818 { 819 } 820 static inline u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, 821 u32 max_4ms_framelen) 822 { 823 return 0; 824 } 825 static inline void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc) 826 { 827 } 828 static 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 845 void ath_init_leds(struct ath_softc *sc); 846 void ath_deinit_leds(struct ath_softc *sc); 847 #else 848 static inline void ath_init_leds(struct ath_softc *sc) 849 { 850 } 851 852 static 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 862 void ath9k_init_wow(struct ieee80211_hw *hw); 863 void ath9k_deinit_wow(struct ieee80211_hw *hw); 864 int ath9k_suspend(struct ieee80211_hw *hw, 865 struct cfg80211_wowlan *wowlan); 866 int ath9k_resume(struct ieee80211_hw *hw); 867 void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled); 868 #else 869 static inline void ath9k_init_wow(struct ieee80211_hw *hw) 870 { 871 } 872 static inline void ath9k_deinit_wow(struct ieee80211_hw *hw) 873 { 874 } 875 static inline int ath9k_suspend(struct ieee80211_hw *hw, 876 struct cfg80211_wowlan *wowlan) 877 { 878 return 0; 879 } 880 static inline int ath9k_resume(struct ieee80211_hw *hw) 881 { 882 return 0; 883 } 884 static 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 2 910 911 struct 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 }; 944 945 void 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 */ 982 983 struct 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 ktime_t last_event_time; 1014 #endif 1015 1016 unsigned long driver_data; 1017 1018 u8 gtt_cnt; 1019 u32 intrstatus; 1020 unsigned long rx_active_check_time; 1021 u32 rx_active_count; 1022 u16 ps_flags; /* PS_* */ 1023 bool ps_enabled; 1024 bool ps_idle; 1025 short nbcnvifs; 1026 unsigned long ps_usecount; 1027 1028 struct ath_rx rx; 1029 struct ath_tx tx; 1030 struct ath_beacon beacon; 1031 1032 struct cfg80211_chan_def cur_chandef; 1033 struct ath_chanctx chanctx[ATH9K_NUM_CHANCTX]; 1034 struct ath_chanctx *cur_chan; 1035 spinlock_t chan_lock; 1036 1037 #ifdef CONFIG_MAC80211_LEDS 1038 bool led_registered; 1039 char led_name[32]; 1040 struct led_classdev led_cdev; 1041 #endif 1042 1043 #ifdef CONFIG_ATH9K_DEBUGFS 1044 struct ath9k_debug debug; 1045 #endif 1046 struct delayed_work hw_check_work; 1047 struct delayed_work hw_pll_work; 1048 struct timer_list sleep_timer; 1049 1050 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT 1051 struct ath_btcoex btcoex; 1052 struct ath_mci_coex mci_coex; 1053 struct work_struct mci_work; 1054 #endif 1055 1056 struct ath_descdma txsdma; 1057 1058 struct ath_ant_comb ant_comb; 1059 u8 ant_tx, ant_rx; 1060 struct dfs_pattern_detector *dfs_detector; 1061 u64 dfs_prev_pulse_ts; 1062 u32 wow_enabled; 1063 1064 struct ath_spec_scan_priv spec_priv; 1065 1066 struct ieee80211_vif *tx99_vif; 1067 struct sk_buff *tx99_skb; 1068 bool tx99_state; 1069 s16 tx99_power; 1070 1071 #ifdef CONFIG_ATH9K_WOW 1072 u32 wow_intr_before_sleep; 1073 bool force_wow; 1074 #endif 1075 1076 #ifdef CONFIG_ATH9K_HWRNG 1077 struct hwrng rng_ops; 1078 u32 rng_last; 1079 char rng_name[sizeof("ath9k_65535")]; 1080 #endif 1081 }; 1082 1083 /********/ 1084 /* TX99 */ 1085 /********/ 1086 1087 #ifdef CONFIG_ATH9K_TX99 1088 void ath9k_tx99_init_debug(struct ath_softc *sc); 1089 int ath9k_tx99_send(struct ath_softc *sc, struct sk_buff *skb, 1090 struct ath_tx_control *txctl); 1091 #else 1092 static inline void ath9k_tx99_init_debug(struct ath_softc *sc) 1093 { 1094 } 1095 static inline int ath9k_tx99_send(struct ath_softc *sc, 1096 struct sk_buff *skb, 1097 struct ath_tx_control *txctl) 1098 { 1099 return 0; 1100 } 1101 #endif /* CONFIG_ATH9K_TX99 */ 1102 1103 /***************************/ 1104 /* Random Number Generator */ 1105 /***************************/ 1106 #ifdef CONFIG_ATH9K_HWRNG 1107 void ath9k_rng_start(struct ath_softc *sc); 1108 void ath9k_rng_stop(struct ath_softc *sc); 1109 #else 1110 static inline void ath9k_rng_start(struct ath_softc *sc) 1111 { 1112 } 1113 1114 static inline void ath9k_rng_stop(struct ath_softc *sc) 1115 { 1116 } 1117 #endif 1118 1119 static inline void ath_read_cachesize(struct ath_common *common, int *csz) 1120 { 1121 common->bus_ops->read_cachesize(common, csz); 1122 } 1123 1124 void ath9k_tasklet(struct tasklet_struct *t); 1125 int ath_cabq_update(struct ath_softc *); 1126 u8 ath9k_parse_mpdudensity(u8 mpdudensity); 1127 irqreturn_t ath_isr(int irq, void *dev); 1128 int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan); 1129 void ath_cancel_work(struct ath_softc *sc); 1130 void ath_restart_work(struct ath_softc *sc); 1131 int ath9k_init_device(u16 devid, struct ath_softc *sc, 1132 const struct ath_bus_ops *bus_ops); 1133 void ath9k_deinit_device(struct ath_softc *sc); 1134 u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate); 1135 void ath_start_rfkill_poll(struct ath_softc *sc); 1136 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw); 1137 void ath9k_ps_wakeup(struct ath_softc *sc); 1138 void ath9k_ps_restore(struct ath_softc *sc); 1139 1140 #ifdef CONFIG_ATH9K_PCI 1141 int ath_pci_init(void); 1142 void ath_pci_exit(void); 1143 #else 1144 static inline int ath_pci_init(void) { return 0; }; 1145 static inline void ath_pci_exit(void) {}; 1146 #endif 1147 1148 #ifdef CONFIG_ATH9K_AHB 1149 int ath_ahb_init(void); 1150 void ath_ahb_exit(void); 1151 #else 1152 static inline int ath_ahb_init(void) { return 0; }; 1153 static inline void ath_ahb_exit(void) {}; 1154 #endif 1155 1156 #endif /* ATH9K_H */ 1157