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| 1 | 13 | up20180614 | /* $NetBSD: disk.h,v 1.65 2015/08/16 18:00:03 mlelstv Exp $ */
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| 2 | |||
| 3 | /*-
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| 4 | * Copyright (c) 1996, 1997, 2004 The NetBSD Foundation, Inc.
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * This code is derived from software contributed to The NetBSD Foundation
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| 8 | * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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| 9 | * NASA Ames Research Center.
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| 10 | *
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| 11 | * Redistribution and use in source and binary forms, with or without
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| 12 | * modification, are permitted provided that the following conditions
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| 13 | * are met:
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| 14 | * 1. Redistributions of source code must retain the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer.
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| 16 | * 2. Redistributions in binary form must reproduce the above copyright
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| 17 | * notice, this list of conditions and the following disclaimer in the
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| 18 | * documentation and/or other materials provided with the distribution.
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| 19 | *
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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| 22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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| 24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| 30 | * POSSIBILITY OF SUCH DAMAGE.
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| 31 | */
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| 32 | |||
| 33 | /*
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| 34 | * Copyright (c) 1992, 1993
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| 35 | * The Regents of the University of California. All rights reserved.
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| 36 | *
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| 37 | * This software was developed by the Computer Systems Engineering group
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| 38 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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| 39 | * contributed to Berkeley.
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| 40 | *
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| 41 | * All advertising materials mentioning features or use of this software
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| 42 | * must display the following acknowledgement:
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| 43 | * This product includes software developed by the University of
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| 44 | * California, Lawrence Berkeley Laboratories.
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| 45 | *
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| 46 | * Redistribution and use in source and binary forms, with or without
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| 47 | * modification, are permitted provided that the following conditions
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| 48 | * are met:
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| 49 | * 1. Redistributions of source code must retain the above copyright
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| 50 | * notice, this list of conditions and the following disclaimer.
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| 51 | * 2. Redistributions in binary form must reproduce the above copyright
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| 52 | * notice, this list of conditions and the following disclaimer in the
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| 53 | * documentation and/or other materials provided with the distribution.
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| 54 | * 3. Neither the name of the University nor the names of its contributors
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| 55 | * may be used to endorse or promote products derived from this software
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| 56 | * without specific prior written permission.
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| 57 | *
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| 58 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 59 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 60 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 61 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 62 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 63 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 64 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 65 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 66 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 67 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 68 | * SUCH DAMAGE.
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| 69 | *
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| 70 | * from: Header: disk.h,v 1.5 92/11/19 04:33:03 torek Exp (LBL)
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| 71 | *
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| 72 | * @(#)disk.h 8.2 (Berkeley) 1/9/95
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| 73 | */
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| 74 | |||
| 75 | #ifndef _SYS_DISK_H_
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| 76 | #define _SYS_DISK_H_
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| 77 | |||
| 78 | /*
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| 79 | * Disk device structures.
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| 80 | */
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| 81 | |||
| 82 | #ifdef _KERNEL
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| 83 | #include <sys/device.h> |
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| 84 | #endif
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| 85 | #include <sys/dkio.h> |
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| 86 | #include <sys/time.h> |
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| 87 | #include <sys/queue.h> |
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| 88 | #include <sys/mutex.h> |
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| 89 | #include <sys/iostat.h> |
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| 90 | |||
| 91 | #include <prop/proplib.h> |
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| 92 | |||
| 93 | struct buf;
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| 94 | struct disk;
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| 95 | struct disklabel;
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| 96 | struct cpu_disklabel;
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| 97 | struct lwp;
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| 98 | struct vnode;
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| 99 | |||
| 100 | /*
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| 101 | * Disk information dictionary.
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| 102 | *
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| 103 | * This contains general infomation for disk devices.
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| 104 | *
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| 105 | * <dict>
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| 106 | * <key>type</key>
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| 107 | * <string>...</string>
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| 108 | * <key>geometry</key>
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| 109 | * <dict>
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| 110 | * <!-- See below for disk geometry dictionary
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| 111 | * contents. -->
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| 112 | * </dict>
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| 113 | *
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| 114 | * <!-- optional information -->
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| 115 | * <key>rpm</key>
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| 116 | * <integer>...</integer>
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| 117 | * <key>sector-interleave</key>
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| 118 | * <integer>...</integer>
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| 119 | * <key>track-skew</key>
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| 120 | * <integer>...</integer>
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| 121 | * <key>cylinder-skew</key>
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| 122 | * <integer>...</integer>
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| 123 | * <key>head-switch-usecs</key>
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| 124 | * <integer>...</integer>
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| 125 | * <key>track-seek-usecs</key>
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| 126 | * <integer>...</integer>
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| 127 | * <key>removable</key>
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| 128 | * <false/>
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| 129 | * <key>ecc</key>
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| 130 | * <false/>
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| 131 | * <key>bad-sector-forwarding</key>
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| 132 | * <true/>
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| 133 | * <key>ramdisk</key>
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| 134 | * <false/>
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| 135 | * <key>back-to-back-transfers</key>
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| 136 | * <true/>
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| 137 | *
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| 138 | * <!-- additional information for SMD drives -->
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| 139 | * <key>smd-skip-sectoring</key>
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| 140 | * <false/>
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| 141 | * <!-- XXX better names for these properties -->
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| 142 | * <key>smd-mindist</key>
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| 143 | * <integer>...</integer>
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| 144 | * <key>smd-maxdist</key>
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| 145 | * <integer>...</integer>
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| 146 | * <key>smd-sdist</key>
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| 147 | * <integer>...</integer>
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| 148 | *
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| 149 | * <!-- additional information for ST506 drives -->
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| 150 | * <!-- XXX better names for these properties -->
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| 151 | * <key>st506-precompcyl</key>
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| 152 | * <integer>...</integer>
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| 153 | * <key>st506-gap3</key>
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| 154 | * <integer>...</integer>
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| 155 | *
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| 156 | * <!-- additional information for ATA drives -->
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| 157 | * <!-- XXX -->
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| 158 | *
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| 159 | * <!-- additional information for SCSI drives -->
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| 160 | * <!-- XXX -->
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| 161 | * </dict>
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| 162 | */
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| 163 | |||
| 164 | /*
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| 165 | * dkwedge_info:
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| 166 | *
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| 167 | * Information needed to configure (or query configuration of) a
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| 168 | * disk wedge.
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| 169 | */
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| 170 | struct dkwedge_info {
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| 171 | char dkw_devname[16];/* device-style name (e.g. "dk0") */ |
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| 172 | uint8_t dkw_wname[128]; /* wedge name (Unicode, UTF-8) */ |
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| 173 | char dkw_parent[16]; /* parent disk device name */ |
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| 174 | daddr_t dkw_offset; /* LBA offset of wedge in parent */
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| 175 | uint64_t dkw_size; /* size of wedge in blocks */
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| 176 | char dkw_ptype[32]; /* partition type string */ |
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| 177 | }; |
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| 178 | |||
| 179 | /*
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| 180 | * dkwedge_list:
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| 181 | *
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| 182 | * Structure used to query a list of wedges.
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| 183 | */
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| 184 | struct dkwedge_list {
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| 185 | void *dkwl_buf; /* storage for dkwedge_info array */ |
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| 186 | size_t dkwl_bufsize; /* size of that buffer */
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| 187 | u_int dkwl_nwedges; /* total number of wedges */
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| 188 | u_int dkwl_ncopied; /* number actually copied */
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| 189 | }; |
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| 190 | |||
| 191 | #ifdef _KERNEL
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| 192 | /*
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| 193 | * dkwedge_discovery_method:
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| 194 | *
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| 195 | * Structure used to describe partition map parsing schemes
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| 196 | * used for wedge autodiscovery.
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| 197 | */
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| 198 | struct dkwedge_discovery_method {
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| 199 | /* link in wedge driver's list */
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| 200 | LIST_ENTRY(dkwedge_discovery_method) ddm_list; |
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| 201 | const char *ddm_name; /* name of this method */ |
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| 202 | int ddm_priority; /* search priority */ |
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| 203 | int (*ddm_discover)(struct disk *, struct vnode *); |
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| 204 | }; |
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| 205 | |||
| 206 | #define DKWEDGE_DISCOVERY_METHOD_DECL(name, prio, discover) \
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| 207 | static struct dkwedge_discovery_method name ## _ddm = { \ |
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| 208 | { NULL, NULL }, \
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| 209 | #name, \
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| 210 | prio, \ |
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| 211 | discover \ |
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| 212 | }; \ |
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| 213 | __link_set_add_data(dkwedge_methods, name ## _ddm) |
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| 214 | #endif /* _KERNEL */ |
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| 215 | |||
| 216 | /* Some common partition types */
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| 217 | #define DKW_PTYPE_UNKNOWN "" |
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| 218 | #define DKW_PTYPE_UNUSED "unused" |
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| 219 | #define DKW_PTYPE_SWAP "swap" |
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| 220 | #define DKW_PTYPE_V6 "v6" |
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| 221 | #define DKW_PTYPE_V7 "v7" |
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| 222 | #define DKW_PTYPE_SYSV "sysv" |
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| 223 | #define DKW_PTYPE_V71K "v71k" |
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| 224 | #define DKW_PTYPE_V8 "v8" |
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| 225 | #define DKW_PTYPE_FFS "ffs" |
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| 226 | #define DKW_PTYPE_FAT "msdos" |
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| 227 | #define DKW_PTYPE_LFS "lfs" |
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| 228 | #define DKW_PTYPE_OTHER "other" |
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| 229 | #define DKW_PTYPE_HPFS "hpfs" |
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| 230 | #define DKW_PTYPE_ISO9660 "cd9660" |
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| 231 | #define DKW_PTYPE_BOOT "boot" |
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| 232 | #define DKW_PTYPE_AMIGADOS "ados" |
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| 233 | #define DKW_PTYPE_HFS "hfs" |
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| 234 | #define DKW_PTYPE_FILECORE "filecore" |
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| 235 | #define DKW_PTYPE_EXT2FS "ext2fs" |
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| 236 | #define DKW_PTYPE_NTFS "ntfs" |
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| 237 | #define DKW_PTYPE_RAIDFRAME "raidframe" |
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| 238 | #define DKW_PTYPE_CCD "ccd" |
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| 239 | #define DKW_PTYPE_JFS2 "jfs2" |
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| 240 | #define DKW_PTYPE_APPLEUFS "appleufs" |
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| 241 | #define DKW_PTYPE_VINUM "vinum" |
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| 242 | #define DKW_PTYPE_UDF "udf" |
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| 243 | #define DKW_PTYPE_APPLEHFS "hfs" |
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| 244 | #define DKW_PTYPE_SYSVBFS "sysvbfs" |
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| 245 | #define DKW_PTYPE_EFS "efs" |
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| 246 | #define DKW_PTYPE_NILFS "nilfs" |
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| 247 | #define DKW_PTYPE_CGD "cgd" |
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| 248 | #define DKW_PTYPE_MINIXFS3 "minixfs3" |
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| 249 | |||
| 250 | /*
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| 251 | * Ensure each symbol used in FSTYPE_DEFN in <sys/disklabel.h>
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| 252 | * has a corresponding DKW_PTYPE_* definition.
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| 253 | */
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| 254 | #define DKW_PTYPE_MSDOS DKW_PTYPE_FAT
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| 255 | #define DKW_PTYPE_BSDFFS DKW_PTYPE_FFS
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| 256 | #define DKW_PTYPE_BSDLFS DKW_PTYPE_LFS
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| 257 | #define DKW_PTYPE_ADOS DKW_PTYPE_AMIGADOS
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| 258 | #define DKW_PTYPE_EX2FS DKW_PTYPE_EXT2FS
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| 259 | #define DKW_PTYPE_RAID DKW_PTYPE_RAIDFRAME
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| 260 | |||
| 261 | /*
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| 262 | * Disk geometry dictionary.
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| 263 | *
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| 264 | * NOTE: Not all geometry information is relevant for every kind of disk.
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| 265 | *
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| 266 | * <dict>
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| 267 | * <key>sectors-per-unit</key>
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| 268 | * <integer>...</integer>
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| 269 | * <key>sector-size</key>
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| 270 | * <integer>...</integer>
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| 271 | * <key>sectors-per-track</key>
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| 272 | * <integer>...</integer>
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| 273 | * <key>tracks-per-cylinder</key>
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| 274 | * <integer>...</integer>
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| 275 | * <key>cylinders-per-unit</key>
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| 276 | * <integer>...</integer>
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| 277 | * <key>physical-cylinders-per-unit</key>
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| 278 | * <integer>...</integer>
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| 279 | * <key>spare-sectors-per-track</key>
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| 280 | * <integer>...</integer>
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| 281 | * <key>spare-sectors-per-cylinder</key>
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| 282 | * <integer>...</integer>
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| 283 | * <key>alternative-cylinders</key>
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| 284 | * <integer>...</integer>
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| 285 | * </dict>
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| 286 | * NOTE: Not all geometry information is relevant for every kind of disk.
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| 287 | */
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| 288 | |||
| 289 | struct disk_geom {
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| 290 | int64_t dg_secperunit; /* # of data sectors per unit */
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| 291 | uint32_t dg_secsize; /* # of bytes per sector */
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| 292 | uint32_t dg_nsectors; /* # of data sectors per track */
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| 293 | uint32_t dg_ntracks; /* # of tracks per cylinder */
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| 294 | uint32_t dg_ncylinders; /* # of data cylinders per unit */
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| 295 | uint32_t dg_secpercyl; /* # of data sectors per cylinder */
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| 296 | uint32_t dg_pcylinders; /* # of physical cylinders per unit */
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| 297 | |||
| 298 | /*
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| 299 | * Spares (bad sector replacements) below are not counted in
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| 300 | * dg_nsectors or dg_secpercyl. Spare sectors are assumed to
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| 301 | * be physical sectors which occupy space at the end of each
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| 302 | * track and/or cylinder.
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| 303 | */
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| 304 | uint32_t dg_sparespertrack; |
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| 305 | uint32_t dg_sparespercyl; |
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| 306 | /*
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| 307 | * Alternative cylinders include maintenance, replacement,
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| 308 | * configuration description areas, etc.
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| 309 | */
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| 310 | uint32_t dg_acylinders; |
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| 311 | }; |
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| 312 | |||
| 313 | /*
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| 314 | * Disk partition dictionary.
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| 315 | *
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| 316 | * A partition is represented as a dictionary containing generic partition
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| 317 | * properties (such as starting block and block count), as well as information
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| 318 | * that is specific to individual partition map formats.
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| 319 | *
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| 320 | * <dict>
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| 321 | * <key>start-block</key>
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| 322 | * <integer>...</integer>
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| 323 | * <key>block-count</key>
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| 324 | * <integer>...</integer>
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| 325 | * <!-- DKW_PTYPE strings ("" or missing if unknown) -->
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| 326 | * <key>type</type>
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| 327 | * <string>...</string>
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| 328 | * <!-- optional -->
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| 329 | * <key>name</key>
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| 330 | * <string>...</string>
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| 331 | *
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| 332 | * <!-- these are valid for GPT partition maps -->
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| 333 | * <key>gpt-type-guid</key>
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| 334 | * <string>...</string>
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| 335 | * <key>gpt-partition-guid</key>
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| 336 | * <string>...</string>
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| 337 | * <key>gpt-platform-required</key>
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| 338 | * <false/>
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| 339 | *
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| 340 | * <!-- these are valid for 4.4BSD partition maps -->
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| 341 | * <key>bsd44-partition-type</key>
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| 342 | * <integer>...</integer>
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| 343 | * <key>bsd44-fs-fragment-size</key>
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| 344 | * <integer>...</integer>
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| 345 | * <key>bsd44-iso9660-session-offset</key>
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| 346 | * <integer>...</integer>
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| 347 | * <key>bsd44-ffs-cylinders-per-group</key>
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| 348 | * <integer>...</integer>
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| 349 | * <key>bsd44-lfs-segment-shift</key>
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| 350 | * <integer>...</integer>
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| 351 | *
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| 352 | * <!-- these are valid for NeXT partition maps -->
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| 353 | * <key>next-block-size</key>
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| 354 | * <integer>...</integer>
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| 355 | * <key>next-fs-fragment-size</key>
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| 356 | * <integer>...</integer>
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| 357 | * <key>next-fs-optimization</key>
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| 358 | * <string>...</string> <!-- "space" or "time" -->
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| 359 | * <key>next-fs-cylinders-per-group</key>
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| 360 | * <integer>...</integer>
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| 361 | * <key>next-bytes-per-inode-density</key>
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| 362 | * <integer>...</integer>
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| 363 | * <key>next-minfree-percentage</key>
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| 364 | * <integer>...</integer>
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| 365 | * <key>next-run-newfs-during-init</key>
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| 366 | * <false/>
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| 367 | * <key>next-mount-point</key>
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| 368 | * <string>...</string>
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| 369 | * <key>next-automount</key>
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| 370 | * <true/>
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| 371 | * <key>next-partition-type</key>
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| 372 | * <string>...</string>
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| 373 | *
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| 374 | * <!-- these are valid for MBR partition maps -->
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| 375 | * <key>mbr-start-head</key>
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| 376 | * <integer>...</integer>
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| 377 | * <key>mbr-start-sector</key>
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| 378 | * <integer>...</integer>
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| 379 | * <key>mbr-start-cylinder</key>
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| 380 | * <integer>...</integer>
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| 381 | * <key>mbr-partition-type</key>
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| 382 | * <integer>...</integer>
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| 383 | * <key>mbr-end-head</key>
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| 384 | * <integer>...</integer>
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| 385 | * <key>mbr-end-sector</key>
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| 386 | * <integer>...</integer>
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| 387 | * <key>mbr-end-cylinder</key>
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| 388 | * <integer>...</integer>
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| 389 | * <key>mbr-active-partition</key>
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| 390 | * <false/>
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| 391 | *
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| 392 | * <!-- these are valid for Apple partition maps -->
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| 393 | * <key>apple-partition-type</key>
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| 394 | * <string>...</string>
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| 395 | * <!-- XXX What else do we need? wrstuden? -->
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| 396 | *
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| 397 | * <!-- these are valid for RISCiX partition maps -->
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| 398 | * <key>riscix-partition-type</key>
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| 399 | * <integer>...</integer>
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| 400 | *
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| 401 | * <!-- these are valid for MIPS/SGI partition maps -->
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| 402 | * <key>mips-partition-type</key>
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| 403 | * <integer>...</integer>
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| 404 | *
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| 405 | * <!-- SunOS 4 partition maps have no specific
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| 406 | * additional information. Note, however,
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| 407 | * that SunOS 4 partitions must begin on
|
||
| 408 | * cylinder boundaries. -->
|
||
| 409 | *
|
||
| 410 | * <!-- XXX Need Amiga partition map info -->
|
||
| 411 | *
|
||
| 412 | * <!-- these are valid for VTOC partition maps -->
|
||
| 413 | * <key>vtoc-tag</key>
|
||
| 414 | * <integer>...</integer>
|
||
| 415 | * <key>vtoc-unmount</key>
|
||
| 416 | * <false/>
|
||
| 417 | * <key>vtoc-read-only</key>
|
||
| 418 | * <false/>
|
||
| 419 | * <!-- XXX is this really part of the partition info? -->
|
||
| 420 | * <key>vtoc-timestamp</key>
|
||
| 421 | * <integer>...</integer>
|
||
| 422 | *
|
||
| 423 | * <!-- mvme68k partition maps use 4.4BSD partition
|
||
| 424 | * info stuffed into two different areas of the
|
||
| 425 | * disk information label recognized by BUG. -->
|
||
| 426 | *
|
||
| 427 | * <!-- XXX What else? -->
|
||
| 428 | * </dict>
|
||
| 429 | */
|
||
| 430 | |||
| 431 | struct disk {
|
||
| 432 | TAILQ_ENTRY(disk) dk_link; /* link in global disklist */
|
||
| 433 | const char *dk_name; /* disk name */ |
||
| 434 | prop_dictionary_t dk_info; /* reference to disk-info dictionary */
|
||
| 435 | struct disk_geom dk_geom; /* cooked version of dk_info */ |
||
| 436 | int dk_bopenmask; /* block devices open */ |
||
| 437 | int dk_copenmask; /* character devices open */ |
||
| 438 | int dk_openmask; /* composite (bopen|copen) */ |
||
| 439 | int dk_state; /* label state ### */ |
||
| 440 | int dk_blkshift; /* shift to convert DEV_BSIZE to blks */ |
||
| 441 | int dk_byteshift; /* shift to convert bytes to blks */ |
||
| 442 | |||
| 443 | /*
|
||
| 444 | * Metrics data; note that some metrics may have no meaning
|
||
| 445 | * on certain types of disks.
|
||
| 446 | */
|
||
| 447 | struct io_stats *dk_stats;
|
||
| 448 | |||
| 449 | const struct dkdriver *dk_driver; /* pointer to driver */ |
||
| 450 | |||
| 451 | /*
|
||
| 452 | * Information required to be the parent of a disk wedge.
|
||
| 453 | */
|
||
| 454 | kmutex_t dk_rawlock; /* lock on these fields */
|
||
| 455 | u_int dk_rawopens; /* # of openes of rawvp */
|
||
| 456 | struct vnode *dk_rawvp; /* vnode for the RAW_PART bdev */ |
||
| 457 | |||
| 458 | kmutex_t dk_openlock; /* lock on these and openmask */
|
||
| 459 | u_int dk_nwedges; /* # of configured wedges */
|
||
| 460 | /* all wedges on this disk */
|
||
| 461 | LIST_HEAD(, dkwedge_softc) dk_wedges; |
||
| 462 | |||
| 463 | /*
|
||
| 464 | * Disk label information. Storage for the in-core disk label
|
||
| 465 | * must be dynamically allocated, otherwise the size of this
|
||
| 466 | * structure becomes machine-dependent.
|
||
| 467 | */
|
||
| 468 | daddr_t dk_labelsector; /* sector containing label */
|
||
| 469 | struct disklabel *dk_label; /* label */ |
||
| 470 | struct cpu_disklabel *dk_cpulabel;
|
||
| 471 | }; |
||
| 472 | |||
| 473 | #ifdef _KERNEL
|
||
| 474 | struct dkdriver {
|
||
| 475 | void (*d_strategy)(struct buf *); |
||
| 476 | void (*d_minphys)(struct buf *); |
||
| 477 | int (*d_open)(dev_t, int, int, struct lwp *); |
||
| 478 | int (*d_close)(dev_t, int, int, struct lwp *); |
||
| 479 | int (*d_diskstart)(device_t, struct buf *); |
||
| 480 | void (*d_iosize)(device_t, int *); |
||
| 481 | int (*d_dumpblocks)(device_t, void *, daddr_t, int); |
||
| 482 | int (*d_lastclose)(device_t);
|
||
| 483 | int (*d_discard)(device_t, off_t, off_t);
|
||
| 484 | }; |
||
| 485 | #endif
|
||
| 486 | |||
| 487 | /* states */
|
||
| 488 | #define DK_CLOSED 0 /* drive is closed */ |
||
| 489 | #define DK_WANTOPEN 1 /* drive being opened */ |
||
| 490 | #define DK_WANTOPENRAW 2 /* drive being opened */ |
||
| 491 | #define DK_RDLABEL 3 /* label being read */ |
||
| 492 | #define DK_OPEN 4 /* label read, drive open */ |
||
| 493 | #define DK_OPENRAW 5 /* open without label */ |
||
| 494 | |||
| 495 | /*
|
||
| 496 | * Bad sector lists per fixed disk
|
||
| 497 | */
|
||
| 498 | struct disk_badsectors {
|
||
| 499 | SLIST_ENTRY(disk_badsectors) dbs_next; |
||
| 500 | daddr_t dbs_min; /* min. sector number */
|
||
| 501 | daddr_t dbs_max; /* max. sector number */
|
||
| 502 | struct timeval dbs_failedat; /* first failure at */ |
||
| 503 | }; |
||
| 504 | |||
| 505 | struct disk_badsecinfo {
|
||
| 506 | uint32_t dbsi_bufsize; /* size of region pointed to */
|
||
| 507 | uint32_t dbsi_skip; /* how many to skip past */
|
||
| 508 | uint32_t dbsi_copied; /* how many got copied back */
|
||
| 509 | uint32_t dbsi_left; /* remaining to copy */
|
||
| 510 | void * dbsi_buffer; /* region to copy disk_badsectors to */ |
||
| 511 | }; |
||
| 512 | |||
| 513 | #define DK_STRATEGYNAMELEN 32 |
||
| 514 | struct disk_strategy {
|
||
| 515 | char dks_name[DK_STRATEGYNAMELEN]; /* name of strategy */ |
||
| 516 | char *dks_param; /* notyet; should be NULL */ |
||
| 517 | size_t dks_paramlen; /* notyet; should be 0 */
|
||
| 518 | }; |
||
| 519 | |||
| 520 | #define DK_BSIZE2BLKSHIFT(b) ((ffs((b) / DEV_BSIZE)) - 1) |
||
| 521 | #define DK_BSIZE2BYTESHIFT(b) (ffs((b)) - 1) |
||
| 522 | |||
| 523 | #ifdef _KERNEL
|
||
| 524 | extern int disk_count; /* number of disks in global disklist */ |
||
| 525 | |||
| 526 | struct proc;
|
||
| 527 | |||
| 528 | void disk_attach(struct disk *); |
||
| 529 | int disk_begindetach(struct disk *, int (*)(device_t), device_t, int); |
||
| 530 | void disk_detach(struct disk *); |
||
| 531 | void disk_init(struct disk *, const char *, const struct dkdriver *); |
||
| 532 | void disk_destroy(struct disk *); |
||
| 533 | void disk_busy(struct disk *); |
||
| 534 | void disk_unbusy(struct disk *, long, int); |
||
| 535 | bool disk_isbusy(struct disk *); |
||
| 536 | struct disk *disk_find(const char *); |
||
| 537 | int disk_ioctl(struct disk *, dev_t, u_long, void *, int, struct lwp *); |
||
| 538 | void disk_set_info(device_t, struct disk *, const char *); |
||
| 539 | |||
| 540 | void dkwedge_init(void); |
||
| 541 | int dkwedge_add(struct dkwedge_info *); |
||
| 542 | int dkwedge_del(struct dkwedge_info *); |
||
| 543 | void dkwedge_delall(struct disk *); |
||
| 544 | int dkwedge_list(struct disk *, struct dkwedge_list *, struct lwp *); |
||
| 545 | void dkwedge_discover(struct disk *); |
||
| 546 | int dkwedge_read(struct disk *, struct vnode *, daddr_t, void *, size_t); |
||
| 547 | device_t dkwedge_find_by_wname(const char *); |
||
| 548 | const char *dkwedge_get_parent_name(dev_t); |
||
| 549 | void dkwedge_print_wnames(void); |
||
| 550 | device_t dkwedge_find_partition(device_t, daddr_t, uint64_t); |
||
| 551 | #endif
|
||
| 552 | |||
| 553 | #endif /* _SYS_DISK_H_ */ |