1/*-
2 * Copyright (c) 1988 University of Utah.
3 * Copyright (c) 1990, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * the Systems Programming Group of the University of Utah Computer
8 * Science Department.
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 * 4. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
35 *
36 *	@(#)vnioctl.h	8.1 (Berkeley) 6/10/93
37 *
38 * From: src/sys/sys/vnioctl.h,v 1.4
39 *
40 * $FreeBSD$
41 */
42
43#ifndef _SYS_MDIOCTL_H_
44#define _SYS_MDIOCTL_H_
45
46enum md_types {MD_MALLOC, MD_PRELOAD, MD_VNODE, MD_SWAP};
47
48/*
49 * Ioctl definitions for memory disk pseudo-device.
50 */
51
52#define MDNPAD		97
53struct md_ioctl {
54	unsigned	md_version;	/* Structure layout version */
55	unsigned	md_unit;	/* unit number */
56	enum md_types	md_type ;	/* type of disk */
57	char		*md_file;	/* pathname of file to mount */
58	off_t		md_mediasize;	/* size of disk in bytes */
59	unsigned	md_sectorsize;	/* sectorsize */
60	unsigned	md_options;	/* options */
61	u_int64_t	md_base;	/* base address */
62	int		md_fwheads;	/* firmware heads */
63	int		md_fwsectors;	/* firmware sectors */
64	int		md_pad[MDNPAD];	/* padding for future ideas */
65};
66
67#define MD_NAME		"md"
68#define MDCTL_NAME	"mdctl"
69#define MDIOVERSION	0
70
71/*
72 * Before you can use a unit, it must be configured with MDIOCSET.
73 * The configuration persists across opens and closes of the device;
74 * an MDIOCCLR must be used to reset a configuration.  An attempt to
75 * MDIOCSET an already active unit will return EBUSY.
76 */
77
78#define MDIOCATTACH	_IOWR('m', 0, struct md_ioctl)	/* attach disk */
79#define MDIOCDETACH	_IOWR('m', 1, struct md_ioctl)	/* detach disk */
80#define MDIOCQUERY	_IOWR('m', 2, struct md_ioctl)	/* query status */
81#define MDIOCLIST	_IOWR('m', 3, struct md_ioctl)	/* query status */
82#define MDIOCRESIZE	_IOWR('m', 4, struct md_ioctl)	/* resize disk */
83
84#define MD_CLUSTER	0x01	/* Don't cluster */
85#define MD_RESERVE	0x02	/* Pre-reserve swap */
86#define MD_AUTOUNIT	0x04	/* Assign next free unit */
87#define MD_READONLY	0x08	/* Readonly mode */
88#define MD_COMPRESS	0x10	/* Compression mode */
89#define MD_FORCE	0x20	/* Don't try to prevent foot-shooting */
90#define MD_ASYNC	0x40	/* Asynchronous mode */
91
92#endif	/* _SYS_MDIOCTL_H_*/
93