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 46 enum md_types {MD_MALLOC, MD_PRELOAD, MD_VNODE, MD_SWAP, MD_NULL}; 47 48 /* 49 * Ioctl definitions for memory disk pseudo-device. 50 */ 51 52 #define MDNPAD 97 53 struct 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