aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath/ath9k/ath9k.h
blob: 3681caf54282bdae2e1f64e46f8d6335fd2fe6c6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
/*
 * Copyright (c) 2008-2009 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef ATH9K_H
#define ATH9K_H

#include <linux/etherdevice.h>
#include <linux/device.h>
#include <linux/leds.h>
#include <linux/completion.h>
#include <linux/pm_qos_params.h>

#include "debug.h"
#include "common.h"

/*
 * Header for the ath9k.ko driver core *only* -- hw code nor any other driver
 * should rely on this file or its contents.
 */

struct ath_node;

/* Macro to expand scalars to 64-bit objects */

#define	ito64(x) (sizeof(x) == 1) ?			\
	(((unsigned long long int)(x)) & (0xff)) :	\
	(sizeof(x) == 2) ?				\
	(((unsigned long long int)(x)) & 0xffff) :	\
	((sizeof(x) == 4) ?				\
	 (((unsigned long long int)(x)) & 0xffffffff) : \
	 (unsigned long long int)(x))

/* increment with wrap-around */
#define INCR(_l, _sz)   do {			\
		(_l)++;				\
		(_l) &= ((_sz) - 1);		\
	} while (0)

/* decrement with wrap-around */
#define DECR(_l,  _sz)  do {			\
		(_l)--;				\
		(_l) &= ((_sz) - 1);		\
	} while (0)

#define A_MAX(a, b) ((a) > (b) ? (a) : (b))

#define ATH9K_PM_QOS_DEFAULT_VALUE	55

#define TSF_TO_TU(_h,_l) \
	((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))

#define	ATH_TXQ_SETUP(sc, i)        ((sc)->tx.txqsetup & (1<<i))

struct ath_config {
	u32 ath_aggr_prot;
	u16 txpowlimit;
	u8 cabqReadytime;
};

/*************************/
/* Descriptor Management */
/*************************/

#define ATH_TXBUF_RESET(_bf) do {				\
		(_bf)->bf_stale = false;			\
		(_bf)->bf_lastbf = NULL;			\
		(_bf)->bf_next = NULL;				\
		memset(&((_bf)->bf_state), 0,			\
		       sizeof(struct ath_buf_state));		\
	} while (0)

#define ATH_RXBUF_RESET(_bf) do {		\
		(_bf)->bf_stale = false;	\
	} while (0)

/**
 * enum buffer_type - Buffer type flags
 *
 * @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX)
 * @BUF_AGGR: Indicates whether the buffer can be aggregated
 *	(used in aggregation scheduling)
 * @BUF_XRETRY: To denote excessive retries of the buffer
 */
enum buffer_type {
	BUF_AMPDU		= BIT(2),
	BUF_AGGR		= BIT(3),
	BUF_XRETRY		= BIT(5),
};

#define bf_isampdu(bf)		(bf->bf_state.bf_type & BUF_AMPDU)
#define bf_isaggr(bf)		(bf->bf_state.bf_type & BUF_AGGR)
#define bf_isxretried(bf)	(bf->bf_state.bf_type & BUF_XRETRY)

#define ATH_TXSTATUS_RING_SIZE 64

struct ath_descdma {
	void *dd_desc;
	dma_addr_t dd_desc_paddr;
	u32 dd_desc_len;
	struct ath_buf *dd_bufptr;
};

int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
		      struct list_head *head, const char *name,
		      int nbuf, int ndesc, bool is_tx);
void ath_descdma_cleanup(struct ath_softc *sc, struct ath_descdma *dd,
			 struct list_head *head);

/***********/
/* RX / TX */
/***********/

#define ATH_MAX_ANTENNA         3
#define ATH_RXBUF               512
#define ATH_TXBUF               512
#define ATH_TXBUF_RESERVE       5
#define ATH_MAX_QDEPTH          (ATH_TXBUF / 4 - ATH_TXBUF_RESERVE)
#define ATH_TXMAXTRY            13
#define ATH_MGT_TXMAXTRY        4

#define TID_TO_WME_AC(_tid)				\
	((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE :	\
	 (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK :	\
	 (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI :	\
	 WME_AC_VO)

#define ADDBA_EXCHANGE_ATTEMPTS    10
#define ATH_AGGR_DELIM_SZ          4
#define ATH_AGGR_MINPLEN           256 /* in bytes, minimum packet length */
/* number of delimiters for encryption padding */
#define ATH_AGGR_ENCRYPTDELIM      10
/* minimum h/w qdepth to be sustained to maximize aggregation */
#define ATH_AGGR_MIN_QDEPTH        2
#define ATH_AMPDU_SUBFRAME_DEFAULT 32

#define IEEE80211_SEQ_SEQ_SHIFT    4
#define IEEE80211_SEQ_MAX          4096
#define IEEE80211_WEP_IVLEN        3
#define IEEE80211_WEP_KIDLEN       1
#define IEEE80211_WEP_CRCLEN       4
#define IEEE80211_MAX_MPDU_LEN     (3840 + FCS_LEN +		\
				    (IEEE80211_WEP_IVLEN +	\
				     IEEE80211_WEP_KIDLEN +	\
				     IEEE80211_WEP_CRCLEN))

/* return whether a bit at index _n in bitmap _bm is set
 * _sz is the size of the bitmap  */
#define ATH_BA_ISSET(_bm, _n)  (((_n) < (WME_BA_BMP_SIZE)) &&		\
				((_bm)[(_n) >> 5] & (1 << ((_n) & 31))))

/* return block-ack bitmap index given sequence and starting sequence */
#define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1))

/* returns delimiter padding required given the packet length */
#define ATH_AGGR_GET_NDELIM(_len)					\
       (((_len) >= ATH_AGGR_MINPLEN) ? 0 :                             \
        DIV_ROUND_UP(ATH_AGGR_MINPLEN - (_len), ATH_AGGR_DELIM_SZ))

#define BAW_WITHIN(_start, _bawsz, _seqno) \
	((((_seqno) - (_start)) & 4095) < (_bawsz))

#define ATH_AN_2_TID(_an, _tidno)  (&(_an)->tid[(_tidno)])

#define ATH_TX_COMPLETE_POLL_INT	1000

enum ATH_AGGR_STATUS {
	ATH_AGGR_DONE,
	ATH_AGGR_BAW_CLOSED,
	ATH_AGGR_LIMITED,
};

#define ATH_TXFIFO_DEPTH 8
struct ath_txq {
	u32 axq_qnum;
	u32 *axq_link;
	struct list_head axq_q;
	spinlock_t axq_lock;
	u32 axq_depth;
	u32 axq_ampdu_depth;
	bool stopped;
	bool axq_tx_inprogress;
	struct list_head axq_acq;
	struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
	struct list_head txq_fifo_pending;
	u8 txq_headidx;
	u8 txq_tailidx;
	int pending_frames;
};

struct ath_atx_ac {
	struct ath_txq *txq;
	int sched;
	struct list_head list;
	struct list_head tid_q;
};

struct ath_frame_info {
	int framelen;
	u32 keyix;
	enum ath9k_key_type keytype;
	u8 retries;
	u16 seqno;
};

struct ath_buf_state {
	u8 bf_type;
	u8 bfs_paprd;
	enum ath9k_internal_frame_type bfs_ftype;
};

struct ath_buf {
	struct list_head list;
	struct ath_buf *bf_lastbf;	/* last buf of this unit (a frame or
					   an aggregate) */
	struct ath_buf *bf_next;	/* next subframe in the aggregate */
	struct sk_buff *bf_mpdu;	/* enclosing frame structure */
	void *bf_desc;			/* virtual addr of desc */
	dma_addr_t bf_daddr;		/* physical addr of desc */
	dma_addr_t bf_buf_addr;	/* physical addr of data buffer, for DMA */
	bool bf_stale;
	u16 bf_flags;
	struct ath_buf_state bf_state;
	struct ath_wiphy *aphy;
};

struct ath_atx_tid {
	struct list_head list;
	struct list_head buf_q;
	struct ath_node *an;
	struct ath_atx_ac *ac;
	unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
	u16 seq_start;
	u16 seq_next;
	u16 baw_size;
	int tidno;
	int baw_head;   /* first un-acked tx buffer */
	int baw_tail;   /* next unused tx buffer slot */
	int sched;
	int paused;
	u8 state;
};

struct ath_node {
	struct ath_common *common;
	struct ath_atx_tid tid[WME_NUM_TID];
	struct ath_atx_ac ac[WME_NUM_AC];
	u16 maxampdu;
	u8 mpdudensity;
};

#define AGGR_CLEANUP         BIT(1)
#define AGGR_ADDBA_COMPLETE  BIT(2)
#define AGGR_ADDBA_PROGRESS  BIT(3)

struct ath_tx_control {
	struct ath_txq *txq;
	struct ath_node *an;
	int if_id;
	enum ath9k_internal_frame_type frame_type;
	u8 paprd;
};

#define ATH_TX_ERROR        0x01
#define ATH_TX_XRETRY       0x02
#define ATH_TX_BAR          0x04

struct ath_tx {
	u16 seq_no;
	u32 txqsetup;
	spinlock_t txbuflock;
	struct list_head txbuf;
	struct ath_txq txq[ATH9K_NUM_TX_QUEUES];
	struct ath_descdma txdma;
	struct ath_txq *txq_map[WME_NUM_AC];
};

struct ath_rx_edma {
	struct sk_buff_head rx_fifo;
	struct sk_buff_head rx_buffers;
	u32 rx_fifo_hwsize;
};

struct ath_rx {
	u8 defant;
	u8 rxotherant;
	u32 *rxlink;
	unsigned int rxfilter;
	spinlock_t rxbuflock;
	struct list_head rxbuf;
	struct ath_descdma rxdma;
	struct ath_buf *rx_bufptr;
	struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX];
};

int ath_startrecv(struct ath_softc *sc);
bool ath_stoprecv(struct ath_softc *sc);
void ath_flushrecv(struct ath_softc *sc);
u32 ath_calcrxfilter(struct ath_softc *sc);
int ath_rx_init(struct ath_softc *sc, int nbufs);
void ath_rx_cleanup(struct ath_softc *sc);
int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp);
struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype);
void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq);
bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx);
void ath_draintxq(struct ath_softc *sc,
		     struct ath_txq *txq, bool retry_tx);
void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an);
void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an);
void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq);
int ath_tx_init(struct ath_softc *sc, int nbufs);
void ath_tx_cleanup(struct ath_softc *sc);
int ath_txq_update(struct ath_softc *sc, int qnum,
		   struct ath9k_tx_queue_info *q);
int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
		 struct ath_tx_control *txctl);
void ath_tx_tasklet(struct ath_softc *sc);
void ath_tx_edma_tasklet(struct ath_softc *sc);
int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
		      u16 tid, u16 *ssn);
void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);

/********/
/* VIFs */
/********/

struct ath_vif {
	int av_bslot;
	__le64 tsf_adjust; /* TSF adjustment for staggered beacons */
	enum nl80211_iftype av_opmode;
	struct ath_buf *av_bcbuf;
	struct ath_tx_control av_btxctl;
	u8 bssid[ETH_ALEN]; /* current BSSID from config_interface */
};

/*******************/
/* Beacon Handling */
/*******************/

/*
 * Regardless of the number of beacons we stagger, (i.e. regardless of the
 * number of BSSIDs) if a given beacon does not go out even after waiting this
 * number of beacon intervals, the game's up.
 */
#define BSTUCK_THRESH           	(9 * ATH_BCBUF)
#define	ATH_BCBUF               	4
#define ATH_DEFAULT_BINTVAL     	100 /* TU */
#define ATH_DEFAULT_BMISS_LIMIT 	10
#define IEEE80211_MS_TO_TU(x)           (((x) * 1000) / 1024)

struct ath_beacon_config {
	u16 beacon_interval;
	u16 listen_interval;
	u16 dtim_period;
	u16 bmiss_timeout;
	u8 dtim_count;
};

struct ath_beacon {
	enum {
		OK,		/* no change needed */
		UPDATE,		/* update pending */
		COMMIT		/* beacon sent, commit change */
	} updateslot;		/* slot time update fsm */

	u32 beaconq;
	u32 bmisscnt;
	u32 ast_be_xmit;
	u64 bc_tstamp;
	struct ieee80211_vif *bslot[ATH_BCBUF];
	struct ath_wiphy *bslot_aphy[ATH_BCBUF];
	int slottime;
	int slotupdate;
	struct ath9k_tx_queue_info beacon_qi;
	struct ath_descdma bdma;
	struct ath_txq *cabq;
	struct list_head bbuf;
};

void ath_beacon_tasklet(unsigned long data);
void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif);
int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif);
void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp);
int ath_beaconq_config(struct ath_softc *sc);

/*******/
/* ANI */
/*******/

#define ATH_STA_SHORT_CALINTERVAL 1000    /* 1 second */
#define ATH_AP_SHORT_CALINTERVAL  100     /* 100 ms */
#define ATH_ANI_POLLINTERVAL_OLD  100     /* 100 ms */
#define ATH_ANI_POLLINTERVAL_NEW  1000    /* 1000 ms */
#define ATH_LONG_CALINTERVAL_INT  1000    /* 1000 ms */
#define ATH_LONG_CALINTERVAL      30000   /* 30 seconds */
#define ATH_RESTART_CALINTERVAL   1200000 /* 20 minutes */

#define ATH_PAPRD_TIMEOUT	100 /* msecs */

void ath_hw_check(struct work_struct *work);
void ath_paprd_calibrate(struct work_struct *work);
void ath_ani_calibrate(unsigned long data);

/**********/
/* BTCOEX */
/**********/

struct ath_btcoex {
	bool hw_timer_enabled;
	spinlock_t btcoex_lock;
	struct timer_list period_timer; /* Timer for BT period */
	u32 bt_priority_cnt;
	unsigned long bt_priority_time;
	int bt_stomp_type; /* Types of BT stomping */
	u32 btcoex_no_stomp; /* in usec */
	u32 btcoex_period; /* in usec */
	u32 btscan_no_stomp; /* in usec */
	struct ath_gen_timer *no_stomp_timer; /* Timer for no BT stomping */
};

int ath_init_btcoex_timer(struct ath_softc *sc);
void ath9k_btcoex_timer_resume(struct ath_softc *sc);
void ath9k_btcoex_timer_pause(struct ath_softc *sc);

/********************/
/*   LED Control    */
/********************/

#define ATH_LED_PIN_DEF 		1
#define ATH_LED_PIN_9287		8
#define ATH_LED_ON_DURATION_IDLE	350	/* in msecs */
#define ATH_LED_OFF_DURATION_IDLE	250	/* in msecs */

enum ath_led_type {
	ATH_LED_RADIO,
	ATH_LED_ASSOC,
	ATH_LED_TX,
	ATH_LED_RX
};

struct ath_led {
	struct ath_softc *sc;
	struct led_classdev led_cdev;
	enum ath_led_type led_type;
	char name[32];
	bool registered;
};

void ath_init_leds(struct ath_softc *sc);
void ath_deinit_leds(struct ath_softc *sc);

/* Antenna diversity/combining */
#define ATH_ANT_RX_CURRENT_SHIFT 4
#define ATH_ANT_RX_MAIN_SHIFT 2
#define ATH_ANT_RX_MASK 0x3

#define ATH_ANT_DIV_COMB_SHORT_SCAN_INTR 50
#define ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT 0x100
#define ATH_ANT_DIV_COMB_MAX_PKTCOUNT 0x200
#define ATH_ANT_DIV_COMB_INIT_COUNT 95
#define ATH_ANT_DIV_COMB_MAX_COUNT 100
#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30
#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20

#define ATH_ANT_DIV_COMB_LNA1_LNA2_DELTA -3
#define ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA -1
#define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4
#define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2
#define ATH_ANT_DIV_COMB_LNA1_DELTA_LOW 2

enum ath9k_ant_div_comb_lna_conf {
	ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2,
	ATH_ANT_DIV_COMB_LNA2,
	ATH_ANT_DIV_COMB_LNA1,
	ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2,
};

struct ath_ant_comb {
	u16 count;
	u16 total_pkt_count;
	bool scan;
	bool scan_not_start;
	int main_total_rssi;
	int alt_total_rssi;
	int alt_recv_cnt;
	int main_recv_cnt;
	int rssi_lna1;
	int rssi_lna2;
	int rssi_add;
	int rssi_sub;
	int rssi_first;
	int rssi_second;
	int rssi_third;
	bool alt_good;
	int quick_scan_cnt;
	int main_conf;
	enum ath9k_ant_div_comb_lna_conf first_quick_scan_conf;
	enum ath9k_ant_div_comb_lna_conf second_quick_scan_conf;
	int first_bias;
	int second_bias;
	bool first_ratio;
	bool second_ratio;
	unsigned long scan_start_time;
};

/********************/
/* Main driver core */
/********************/

/*
 * Default cache line size, in bytes.
 * Used when PCI device not fully initialized by bootrom/BIOS
*/
#define DEFAULT_CACHELINE       32
#define ATH_REGCLASSIDS_MAX     10
#define ATH_CABQ_READY_TIME     80      /* % of beacon interval */
#define ATH_MAX_SW_RETRIES      10
#define ATH_CHAN_MAX            255
#define IEEE80211_WEP_NKID      4       /* number of key ids */

#define ATH_TXPOWER_MAX         100     /* .5 dBm units */
#define ATH_RATE_DUMMY_MARKER   0

#define SC_OP_INVALID                BIT(0)
#define SC_OP_BEACONS                BIT(1)
#define SC_OP_RXAGGR                 BIT(2)
#define SC_OP_TXAGGR                 BIT(3)
#define SC_OP_OFFCHANNEL             BIT(4)
#define SC_OP_PREAMBLE_SHORT         BIT(5)
#define SC_OP_PROTECT_ENABLE         BIT(6)
#define SC_OP_RXFLUSH                BIT(7)
#define SC_OP_LED_ASSOCIATED         BIT(8)
#define SC_OP_LED_ON                 BIT(9)
#define SC_OP_TSF_RESET              BIT(11)
#define SC_OP_BT_PRIORITY_DETECTED   BIT(12)
#define SC_OP_BT_SCAN		     BIT(13)
#define SC_OP_ANI_RUN		     BIT(14)
#define SC_OP_ENABLE_APM	     BIT(15)

/* Powersave flags */
#define PS_WAIT_FOR_BEACON        BIT(0)
#define PS_WAIT_FOR_CAB           BIT(1)
#define PS_WAIT_FOR_PSPOLL_DATA   BIT(2)
#define PS_WAIT_FOR_TX_ACK        BIT(3)
#define PS_BEACON_SYNC            BIT(4)

struct ath_wiphy;
struct ath_rate_table;

struct ath_softc {
	struct ieee80211_hw *hw;
	struct device *dev;

	spinlock_t wiphy_lock; /* spinlock to protect ath_wiphy data */
	struct ath_wiphy *pri_wiphy;
	struct ath_wiphy **sec_wiphy; /* secondary wiphys (virtual radios); may
				       * have NULL entries */
	int num_sec_wiphy; /* number of sec_wiphy pointers in the array */
	int chan_idx;
	int chan_is_ht;
	struct ath_wiphy *next_wiphy;
	struct work_struct chan_work;
	int wiphy_select_failures;
	unsigned long wiphy_select_first_fail;
	struct delayed_work wiphy_work;
	unsigned long wiphy_scheduler_int;
	int wiphy_scheduler_index;
	struct survey_info *cur_survey;
	struct survey_info survey[ATH9K_NUM_CHANNELS];

	struct tasklet_struct intr_tq;
	struct tasklet_struct bcon_tasklet;
	struct ath_hw *sc_ah;
	void __iomem *mem;
	int irq;
	spinlock_t sc_serial_rw;
	spinlock_t sc_pm_lock;
	spinlock_t sc_pcu_lock;
	struct mutex mutex;
	struct work_struct paprd_work;
	struct work_struct hw_check_work;
	struct completion paprd_complete;
	bool paprd_pending;

	u32 intrstatus;
	u32 sc_flags; /* SC_OP_* */
	u16 ps_flags; /* PS_* */
	u16 curtxpow;
	u8 nbcnvifs;
	u16 nvifs;
	bool ps_enabled;
	bool ps_idle;
	unsigned long ps_usecount;

	struct ath_config config;
	struct ath_rx rx;
	struct ath_tx tx;
	struct ath_beacon beacon;
	struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];

	struct ath_led radio_led;
	struct ath_led assoc_led;
	struct ath_led tx_led;
	struct ath_led rx_led;
	struct delayed_work ath_led_blink_work;
	int led_on_duration;
	int led_off_duration;
	int led_on_cnt;
	int led_off_cnt;

	int beacon_interval;

#ifdef CONFIG_ATH9K_DEBUGFS
	struct ath9k_debug debug;
#endif
	struct ath_beacon_config cur_beacon_conf;
	struct delayed_work tx_complete_work;
	struct ath_btcoex btcoex;

	struct ath_descdma txsdma;

	struct ath_ant_comb ant_comb;

	struct pm_qos_request_list pm_qos_req;
};

struct ath_wiphy {
	struct ath_softc *sc; /* shared for all virtual wiphys */
	struct ieee80211_hw *hw;
	struct ath9k_hw_cal_data caldata;
	enum ath_wiphy_state {
		ATH_WIPHY_INACTIVE,
		ATH_WIPHY_ACTIVE,
		ATH_WIPHY_PAUSING,
		ATH_WIPHY_PAUSED,
		ATH_WIPHY_SCAN,
	} state;
	bool idle;
	int chan_idx;
	int chan_is_ht;
	int last_rssi;
};

void ath9k_tasklet(unsigned long data);
int ath_reset(struct ath_softc *sc, bool retry_tx);
int ath_cabq_update(struct ath_softc *);

static inline void ath_read_cachesize(struct ath_common *common, int *csz)
{
	common->bus_ops->read_cachesize(common, csz);
}

extern struct ieee80211_ops ath9k_ops;
extern int ath9k_modparam_nohwcrypt;
extern int led_blink;
extern int ath9k_pm_qos_value;
extern bool is_ath9k_unloaded;

irqreturn_t ath_isr(int irq, void *dev);
void ath9k_init_crypto(struct ath_softc *sc);
int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
		    const struct ath_bus_ops *bus_ops);
void ath9k_deinit_device(struct ath_softc *sc);
void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw);
void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
			   struct ath9k_channel *ichan);
int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
		    struct ath9k_channel *hchan);

void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw);
void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw);
bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode);

#ifdef CONFIG_PCI
int ath_pci_init(void);
void ath_pci_exit(void);
#else
static inline int ath_pci_init(void) { return 0; };
static inline void ath_pci_exit(void) {};
#endif

#ifdef CONFIG_ATHEROS_AR71XX
int ath_ahb_init(void);
void ath_ahb_exit(void);
#else
static inline int ath_ahb_init(void) { return 0; };
static inline void ath_ahb_exit(void) {};
#endif

void ath9k_ps_wakeup(struct ath_softc *sc);
void ath9k_ps_restore(struct ath_softc *sc);

u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate);

void ath9k_set_bssid_mask(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
int ath9k_wiphy_add(struct ath_softc *sc);
int ath9k_wiphy_del(struct ath_wiphy *aphy);
void ath9k_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, int ftype);
int ath9k_wiphy_pause(struct ath_wiphy *aphy);
int ath9k_wiphy_unpause(struct ath_wiphy *aphy);
int ath9k_wiphy_select(struct ath_wiphy *aphy);
void ath9k_wiphy_set_scheduler(struct ath_softc *sc, unsigned int msec_int);
void ath9k_wiphy_chan_work(struct work_struct *work);
bool ath9k_wiphy_started(struct ath_softc *sc);
void ath9k_wiphy_pause_all_forced(struct ath_softc *sc,
				  struct ath_wiphy *selected);
bool ath9k_wiphy_scanning(struct ath_softc *sc);
void ath9k_wiphy_work(struct work_struct *work);
bool ath9k_all_wiphys_idle(struct ath_softc *sc);
void ath9k_set_wiphy_idle(struct ath_wiphy *aphy, bool idle);

void ath_mac80211_stop_queue(struct ath_softc *sc, u16 skb_queue);
bool ath_mac80211_start_queue(struct ath_softc *sc, u16 skb_queue);

void ath_start_rfkill_poll(struct ath_softc *sc);
extern void ath9k_rfkill_poll_state(struct ieee80211_hw *hw);

#endif /* ATH9K_H */