sdvar.h revision 1.5 
1/*	$NetBSD: sdvar.h,v 1.5 1998/08/05 16:29:06 drochner Exp $	*/
2
3/*
4 * Copyright (c) 1994, 1995, 1997 Charles M. Hannum.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by Charles M. Hannum.
17 * 4. The name of the author may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * Originally written by Julian Elischer (julian@dialix.oz.au)
34 * for TRW Financial Systems for use under the MACH(2.5) operating system.
35 *
36 * TRW Financial Systems, in accordance with their agreement with Carnegie
37 * Mellon University, makes this software available to CMU to distribute
38 * or use in any manner that they see fit as long as this message is kept with
39 * the software. For this reason TFS also grants any other persons or
40 * organisations permission to use or modify this software.
41 *
42 * TFS supplies this software to be publicly redistributed
43 * on the understanding that TFS is not responsible for the correct
44 * functioning of this software in any circumstances.
45 *
46 * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
47 */
48
49#define	SDRETRIES	4
50
51struct sd_ops;
52
53struct sd_softc {
54	struct device sc_dev;
55	struct disk sc_dk;
56
57	int flags;
58#define	SDF_LOCKED	0x01
59#define	SDF_WANTED	0x02
60#define	SDF_WLABEL	0x04		/* label is writable */
61#define	SDF_LABELLING	0x08		/* writing label */
62#define	SDF_ANCIENT	0x10		/* disk is ancient; for minphys */
63	struct scsipi_link *sc_link;	/* contains our targ, lun, etc. */
64	struct disk_parms {
65		u_long	heads;		/* number of heads */
66		u_long	cyls;		/* number of cylinders */
67		u_long	sectors;	/* number of sectors/track */
68		u_long	blksize;	/* number of bytes/sector */
69		u_long	disksize;	/* total number sectors */
70		u_long	rot_rate;	/* rotational rate, in RPM */
71	} params;
72	struct buf buf_queue;
73	u_int8_t type;
74	char name[16]; /* product name, for default disklabel */
75	const struct sd_ops *sc_ops;	/* our bus-dependent ops vector */
76
77	void *sc_sdhook;		/* our shutdown hook */
78
79#if NRND > 0
80	rndsource_element_t rnd_source;
81#endif
82};
83
84struct sd_ops {
85	int	(*sdo_get_parms) __P((struct sd_softc *, struct disk_parms *,
86		    int));
87};
88#define	SDGP_RESULT_OK		0	/* paramters obtained */
89#define	SDGP_RESULT_OFFLINE	1	/* no media, or otherwise losing */
90#define	SDGP_RESULT_UNFORMATTED	2	/* unformatted media (max params) */
91
92void sdattach __P((struct device *, struct sd_softc *, struct scsipi_link *,
93    const struct sd_ops *));
94