if_ath_alq.h revision 242781 
1/*-
2 * Copyright (c) 2012 Adrian Chadd
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer,
10 *    without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 *    redistribution must be conditioned upon including a substantially
14 *    similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 *
29 * $FreeBSD: head/sys/dev/ath/if_ath_alq.h 242781 2012-11-08 18:07:29Z adrian $
30 */
31#ifndef	__IF_ATH_ALQ_H__
32#define	__IF_ATH_ALQ_H__
33
34#define	ATH_ALQ_FILENAME_LEN	128
35#define	ATH_ALQ_DEVNAME_LEN	32
36
37struct if_ath_alq {
38	uint32_t	sc_alq_debug;		/* Debug flags to report */
39	struct alq *	sc_alq_alq;		/* alq state */
40	unsigned int	sc_alq_qsize;		/* queue size */
41	unsigned int	sc_alq_numlost;		/* number of "lost" entries */
42	int		sc_alq_isactive;
43	char		sc_alq_devname[ATH_ALQ_DEVNAME_LEN];
44	char		sc_alq_filename[ATH_ALQ_FILENAME_LEN];
45};
46
47#define	ATH_ALQ_EDMA_TXSTATUS		1
48#define	ATH_ALQ_EDMA_RXSTATUS		2
49#define	ATH_ALQ_EDMA_TXDESC		3
50
51/* 128 bytes in total */
52#define	ATH_ALQ_PAYLOAD_LEN		112
53
54struct if_ath_alq_hdr {
55	uint64_t	threadid;
56	uint32_t	tstamp;
57	uint16_t	op;
58	uint16_t	len;	/* Length of (optional) payload */
59};
60
61struct if_ath_alq_payload {
62	struct if_ath_alq_hdr hdr;
63	char		payload[];
64};
65
66#ifdef	_KERNEL
67static inline int
68if_ath_alq_checkdebug(struct if_ath_alq *alq, uint16_t op)
69{
70
71	return (alq->sc_alq_debug & (1 << (op - 1)));
72}
73
74extern	void if_ath_alq_init(struct if_ath_alq *alq, const char *devname);
75extern	void if_ath_alq_tidyup(struct if_ath_alq *alq);
76extern	int if_ath_alq_start(struct if_ath_alq *alq);
77extern	int if_ath_alq_stop(struct if_ath_alq *alq);
78extern	void if_ath_alq_post(struct if_ath_alq *alq, uint16_t op,
79	    uint16_t len, const char *buf);
80#endif	/* _KERNEL */
81
82#endif
83