1 /* $NetBSD: disk.h,v 1.7 1994/06/29 06:43:55 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * from: Header: disk.h,v 1.5 92/11/19 04:33:03 torek Exp (LBL) 45 * 46 * @(#)disk.h 8.1 (Berkeley) 6/2/93 47 */ 48 49 /* 50 * Disk device structures. 51 * 52 * Note that this is only a preliminary outline. The final disk structures 53 * may be somewhat different. 54 */ 55 struct buf; 56 57 struct dkdevice { 58 struct device dk_dev; /* base device */ 59 struct dkdevice *dk_next; /* list of disks; not yet used */ 60 int dk_bps; /* xfer rate: bytes per second */ 61 int dk_bopenmask; /* block devices open */ 62 int dk_copenmask; /* character devices open */ 63 int dk_openmask; /* composite (bopen|copen) */ 64 int dk_state; /* label state ### */ 65 int dk_blkshift; /* shift to convert DEV_BSIZE to blks */ 66 int dk_byteshift; /* shift to convert bytes to blks */ 67 struct dkdriver *dk_driver; /* pointer to driver */ 68 daddr_t dk_labelsector; /* sector containing label */ 69 struct disklabel dk_label; /* label */ 70 struct cpu_disklabel dk_cpulabel; 71 }; 72 73 struct dkdriver { 74 void (*d_strategy) __P((struct buf *)); 75 #ifdef notyet 76 int (*d_open) __P((dev_t dev, int ifmt, int, struct proc *)); 77 int (*d_close) __P((dev_t dev, int, int ifmt, struct proc *)); 78 int (*d_ioctl) __P((dev_t dev, int cmd, caddr_t data, int fflag, 79 struct proc *)); 80 int (*d_dump) __P((dev_t)); 81 void (*d_start) __P((struct buf *, daddr_t)); 82 int (*d_mklabel) __P((struct dkdevice *)); 83 #endif 84 }; 85 86 /* states */ 87 #define DK_CLOSED 0 /* drive is closed */ 88 #define DK_WANTOPEN 1 /* drive being opened */ 89 #define DK_WANTOPENRAW 2 /* drive being opened */ 90 #define DK_RDLABEL 3 /* label being read */ 91 #define DK_OPEN 4 /* label read, drive open */ 92 #define DK_OPENRAW 5 /* open without label */ 93 94 #ifdef DISKSORT_STATS 95 /* 96 * Stats from disksort(). 97 */ 98 struct disksort_stats { 99 long ds_newhead; /* # new queue heads created */ 100 long ds_newtail; /* # new queue tails created */ 101 long ds_midfirst; /* # insertions into sort list */ 102 long ds_endfirst; /* # insertions at end of sort list */ 103 long ds_newsecond; /* # inversions (2nd lists) created */ 104 long ds_midsecond; /* # insertions into 2nd list */ 105 long ds_endsecond; /* # insertions at end of 2nd list */ 106 }; 107 #endif 108