if_ath_misc.h revision 238824 
1/*-
2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
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_misc.h 238824 2012-07-27 05:48:42Z adrian $
30 */
31#ifndef	__IF_ATH_MISC_H__
32#define	__IF_ATH_MISC_H__
33
34/*
35 * This is where definitions for "public things" in if_ath.c
36 * will go for the time being.
37 *
38 * Anything in here should eventually be moved out of if_ath.c
39 * and into something else.
40 */
41
42/* unaligned little endian access */
43#define LE_READ_2(p)							\
44	((u_int16_t)							\
45	 ((((u_int8_t *)(p))[0]      ) | (((u_int8_t *)(p))[1] <<  8)))
46#define LE_READ_4(p)							\
47	((u_int32_t)							\
48	 ((((u_int8_t *)(p))[0]      ) | (((u_int8_t *)(p))[1] <<  8) |	\
49	  (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)))
50
51extern int ath_rxbuf;
52extern int ath_txbuf;
53extern int ath_txbuf_mgmt;
54
55extern int ath_tx_findrix(const struct ath_softc *sc, uint8_t rate);
56
57extern struct ath_buf * ath_getbuf(struct ath_softc *sc,
58	    ath_buf_type_t btype);
59extern struct ath_buf * _ath_getbuf_locked(struct ath_softc *sc,
60	    ath_buf_type_t btype);
61extern struct ath_buf * ath_buf_clone(struct ath_softc *sc,
62	    const struct ath_buf *bf);
63/* XXX change this to NULL the buffer pointer? */
64extern void ath_freebuf(struct ath_softc *sc, struct ath_buf *bf);
65extern void ath_returnbuf_head(struct ath_softc *sc, struct ath_buf *bf);
66extern void ath_returnbuf_tail(struct ath_softc *sc, struct ath_buf *bf);
67
68extern int ath_reset(struct ifnet *, ATH_RESET_TYPE);
69extern void ath_tx_draintxq(struct ath_softc *sc, struct ath_txq *txq);
70extern void ath_tx_default_comp(struct ath_softc *sc, struct ath_buf *bf,
71	    int fail);
72extern void ath_tx_update_ratectrl(struct ath_softc *sc,
73	    struct ieee80211_node *ni, struct ath_rc_series *rc,
74	    struct ath_tx_status *ts, int frmlen, int nframes, int nbad);
75
76extern void ath_tx_freebuf(struct ath_softc *sc, struct ath_buf *bf,
77    int status);
78
79extern void ath_txqmove(struct ath_txq *dst, struct ath_txq *src);
80
81extern void ath_mode_init(struct ath_softc *sc);
82
83extern void ath_setdefantenna(struct ath_softc *sc, u_int antenna);
84
85extern void ath_setslottime(struct ath_softc *sc);
86
87extern	int ath_descdma_alloc_desc(struct ath_softc *sc,
88	    struct ath_descdma *dd, ath_bufhead *head, const char *name,
89	    int ds_size, int ndesc);
90extern	int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
91	    ath_bufhead *head, const char *name, int ds_size, int nbuf,
92	    int ndesc);
93extern	int ath_descdma_setup_rx_edma(struct ath_softc *sc,
94	    struct ath_descdma *dd, ath_bufhead *head, const char *name,
95	    int nbuf, int desclen);
96extern	void ath_descdma_cleanup(struct ath_softc *sc,
97	    struct ath_descdma *dd, ath_bufhead *head);
98
99/*
100 * This is only here so that the RX proc function can call it.
101 * It's very likely that the "start TX after RX" call should be
102 * done via something in if_ath.c, moving "rx tasklet" into
103 * if_ath.c and do the ath_start() call there.  Once that's done,
104 * we can kill this.
105 */
106extern void ath_start(struct ifnet *ifp);
107
108static inline void
109ath_tx_kick(struct ath_softc *sc)
110{
111
112	ath_start(sc->sc_ifp);
113}
114
115#endif
116