bbh.h revision 8863:94039d51dda4 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_DKTP_BBH_H
27#define	_SYS_DKTP_BBH_H
28
29#include <sys/scsi/scsi_types.h>
30
31#ifdef	__cplusplus
32extern "C" {
33#endif
34
35struct	bbh_cookie {
36	lldaddr_t	_ck_sector;	/* sector # on device (union) 	*/
37	long		ck_seclen;	/* number of contiguous sec	*/
38};
39#define	ck_lsector	_ck_sector._f
40#define	ck_sector	_ck_sector._p._l
41typedef	struct  bbh_cookie *bbh_cookie_t;
42
43struct	bbh_handle {
44	int	h_totck;
45	int	h_idx;
46	struct	bbh_cookie *h_cktab;
47};
48
49struct	bbh_obj {
50	opaque_t		bbh_data;
51	struct bbh_objops	*bbh_ops;
52};
53
54struct	bbh_objops {
55	int		(*bbh_init)(opaque_t);
56	int		(*bbh_free)(struct bbh_obj *);
57	opaque_t 	(*bbh_gethandle)(opaque_t, struct buf *);
58	bbh_cookie_t	(*bbh_htoc)(opaque_t, opaque_t);
59	void 		(*bbh_freehandle)(opaque_t, opaque_t);
60	void 		*bbh_resv[2];
61};
62
63#define	BBH_GETCK_SECTOR(X, ckp) ((ckp)->ck_sector)
64#define	BBH_GETCK_SECLEN(X, ckp) ((ckp)->ck_seclen)
65
66#define	BBH_INIT(X) (*((struct bbh_obj *)(X))->bbh_ops->bbh_init)\
67	(((struct bbh_obj *)(X))->bbh_data)
68#define	BBH_FREE(X) (*((struct bbh_obj *)(X))->bbh_ops->bbh_free) ((X))
69#define	BBH_GETHANDLE(X, bp) (*((struct bbh_obj *)(X))->bbh_ops->bbh_gethandle)\
70	(((struct bbh_obj *)(X))->bbh_data, (bp))
71#define	BBH_HTOC(X, handle) (*((struct bbh_obj *)(X))->bbh_ops->bbh_htoc) \
72	(((struct bbh_obj *)(X))->bbh_data, (handle))
73#define	BBH_FREEHANDLE(X, handle) \
74	(*((struct bbh_obj *)(X))->bbh_ops->bbh_freehandle) \
75	(((struct bbh_obj *)(X))->bbh_data, (handle))
76
77#ifdef	__cplusplus
78}
79#endif
80
81#endif	/* _SYS_DKTP_BBH_H */
82