sdvar.h revision 1.12 
1/*	$NetBSD: sdvar.h,v 1.12 2000/05/23 10:20:15 bouyer Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39/*
40 * Originally written by Julian Elischer (julian@dialix.oz.au)
41 * for TRW Financial Systems for use under the MACH(2.5) operating system.
42 *
43 * TRW Financial Systems, in accordance with their agreement with Carnegie
44 * Mellon University, makes this software available to CMU to distribute
45 * or use in any manner that they see fit as long as this message is kept with
46 * the software. For this reason TFS also grants any other persons or
47 * organisations permission to use or modify this software.
48 *
49 * TFS supplies this software to be publicly redistributed
50 * on the understanding that TFS is not responsible for the correct
51 * functioning of this software in any circumstances.
52 *
53 * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
54 */
55
56#include "rnd.h"
57#if NRND > 0
58#include <sys/rnd.h>
59#endif
60
61#define	SDRETRIES	4
62
63struct sd_ops;
64
65struct sd_softc {
66	struct device sc_dev;
67	struct disk sc_dk;
68
69	int flags;
70#define	SDF_LOCKED	0x01
71#define	SDF_WANTED	0x02
72#define	SDF_WLABEL	0x04		/* label is writable */
73#define	SDF_LABELLING	0x08		/* writing label */
74#define	SDF_ANCIENT	0x10		/* disk is ancient; for minphys */
75#define	SDF_DIRTY	0x20		/* disk is dirty; needs cache flush */
76#define	SDF_FLUSHING	0x40		/* flushing, for sddone() */
77#define	SDF_RESTART	0x80		/* we issued a scsi_start command */
78	struct scsipi_link *sc_link;	/* contains our targ, lun, etc. */
79	struct disk_parms {
80		u_long	heads;		/* number of heads */
81		u_long	cyls;		/* number of cylinders */
82		u_long	sectors;	/* number of sectors/track */
83		u_long	blksize;	/* number of bytes/sector */
84		u_long	disksize;	/* total number sectors */
85		u_long	rot_rate;	/* rotational rate, in RPM */
86	} params;
87	struct buf_queue buf_queue;
88	u_int8_t type;
89	char name[16]; /* product name, for default disklabel */
90	const struct sd_ops *sc_ops;	/* our bus-dependent ops vector */
91
92	void *sc_sdhook;		/* our shutdown hook */
93
94#if NRND > 0
95	rndsource_element_t rnd_source;
96#endif
97};
98
99struct sd_ops {
100	int	(*sdo_get_parms) __P((struct sd_softc *, struct disk_parms *,
101		    int));
102	int	(*sdo_flush) __P((struct sd_softc *, int));
103};
104#define	SDGP_RESULT_OK		0	/* paramters obtained */
105#define	SDGP_RESULT_OFFLINE	1	/* no media, or otherwise losing */
106#define	SDGP_RESULT_UNFORMATTED	2	/* unformatted media (max params) */
107
108void sdattach __P((struct device *, struct sd_softc *, struct scsipi_link *,
109    const struct sd_ops *));
110int sdactivate __P((struct device *, enum devact));
111int sddetach __P((struct device *, int));
112