dkvar.h revision 1.1.2.2
1 1.1.2.2 nathanw /* $NetBSD: dkvar.h,v 1.1.2.2 2002/10/18 02:41:28 nathanw Exp $ */ 2 1.1.2.2 nathanw 3 1.1.2.2 nathanw /*- 4 1.1.2.2 nathanw * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 1.1.2.2 nathanw * All rights reserved. 6 1.1.2.2 nathanw * 7 1.1.2.2 nathanw * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 nathanw * by Roland C. Dowdeswell. 9 1.1.2.2 nathanw * 10 1.1.2.2 nathanw * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 nathanw * modification, are permitted provided that the following conditions 12 1.1.2.2 nathanw * are met: 13 1.1.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 nathanw * documentation and/or other materials provided with the distribution. 18 1.1.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 nathanw * must display the following acknowledgement: 20 1.1.2.2 nathanw * This product includes software developed by the NetBSD 21 1.1.2.2 nathanw * Foundation, Inc. and its contributors. 22 1.1.2.2 nathanw * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.2 nathanw * contributors may be used to endorse or promote products derived 24 1.1.2.2 nathanw * from this software without specific prior written permission. 25 1.1.2.2 nathanw * 26 1.1.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.2 nathanw * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.2 nathanw */ 38 1.1.2.2 nathanw 39 1.1.2.2 nathanw struct dk_geom { 40 1.1.2.2 nathanw u_int32_t pdg_secsize; 41 1.1.2.2 nathanw u_int32_t pdg_nsectors; 42 1.1.2.2 nathanw u_int32_t pdg_ntracks; 43 1.1.2.2 nathanw u_int32_t pdg_ncylinders; 44 1.1.2.2 nathanw }; 45 1.1.2.2 nathanw 46 1.1.2.2 nathanw /* literally this is not a softc, but is intended to be included in 47 1.1.2.2 nathanw * the pseudo-disk's softc and passed to calls in dksubr.c. It 48 1.1.2.2 nathanw * should include the common elements of the pseudo-disk's softc. 49 1.1.2.2 nathanw * All elements that are included here should describe the external 50 1.1.2.2 nathanw * representation of the disk to the higher layers, and flags that 51 1.1.2.2 nathanw * are common to each of the pseudo-disk drivers. 52 1.1.2.2 nathanw */ 53 1.1.2.2 nathanw struct dk_softc { 54 1.1.2.2 nathanw void *sc_osc; /* the softc of the underlying 55 1.1.2.2 nathanw * driver */ 56 1.1.2.2 nathanw u_int32_t sc_flags; /* flags */ 57 1.1.2.2 nathanw size_t sc_size; /* size of disk */ 58 1.1.2.2 nathanw struct dk_geom sc_geom; /* geometry info */ 59 1.1.2.2 nathanw #define DK_XNAME_SIZE 8 60 1.1.2.2 nathanw char sc_xname[DK_XNAME_SIZE]; /* external name */ 61 1.1.2.2 nathanw struct disk sc_dkdev; /* generic disk info */ 62 1.1.2.2 nathanw struct lock sc_lock; /* the lock */ 63 1.1.2.2 nathanw }; 64 1.1.2.2 nathanw 65 1.1.2.2 nathanw /* sc_flags: 66 1.1.2.2 nathanw * We separate the flags into two varieties, those that dksubr.c 67 1.1.2.2 nathanw * understands and manipulates and those that it does not. 68 1.1.2.2 nathanw */ 69 1.1.2.2 nathanw 70 1.1.2.2 nathanw #define DKF_INITED 0x00010000 /* unit has been initialised */ 71 1.1.2.2 nathanw #define DKF_WLABEL 0x00020000 /* label area is writable */ 72 1.1.2.2 nathanw #define DKF_LABELLING 0x00040000 /* unit is currently being labeled */ 73 1.1.2.2 nathanw #define DKF_WARNLABEL 0x00080000 /* warn if disklabel not present */ 74 1.1.2.2 nathanw #define DKF_LABELSANITY 0x00100000 /* warn if disklabel not sane */ 75 1.1.2.2 nathanw #define DKF_TAKEDUMP 0x00200000 /* allow dumping */ 76 1.1.2.2 nathanw 77 1.1.2.2 nathanw /* Mask of flags that dksubr.c understands, other flags are fair game */ 78 1.1.2.2 nathanw #define DK_FLAGMASK 0xffff0000 79 1.1.2.2 nathanw 80 1.1.2.2 nathanw /* 81 1.1.2.2 nathanw * This defines the interface to the routines in dksubr.c. This 82 1.1.2.2 nathanw * should be a single static structure per pseudo-disk driver. 83 1.1.2.2 nathanw * We only define the functions that we currently need. 84 1.1.2.2 nathanw */ 85 1.1.2.2 nathanw struct dk_intf { 86 1.1.2.2 nathanw int di_dtype; /* disk type */ 87 1.1.2.2 nathanw char *di_dkname; /* disk type name */ 88 1.1.2.2 nathanw int (*di_open)(dev_t, int, int, struct proc *); 89 1.1.2.2 nathanw int (*di_close)(dev_t, int, int, struct proc *); 90 1.1.2.2 nathanw void (*di_strategy)(struct buf *); 91 1.1.2.2 nathanw void (*di_diskstart)(struct dk_softc *, struct buf *); 92 1.1.2.2 nathanw }; 93 1.1.2.2 nathanw 94 1.1.2.2 nathanw #define DK_BUSY(_dksc, _pmask) \ 95 1.1.2.2 nathanw ((_dksc)->sc_dkdev.dk_openmask & ~(_pmask)) || \ 96 1.1.2.2 nathanw ((_dksc)->sc_dkdev.dk_bopenmask & (_pmask) && \ 97 1.1.2.2 nathanw ((_dksc)->sc_dkdev.dk_copenmask & (_pmask))) 98 1.1.2.2 nathanw 99 1.1.2.2 nathanw /* 100 1.1.2.2 nathanw * Functions that are exported to the pseudo disk implementations: 101 1.1.2.2 nathanw */ 102 1.1.2.2 nathanw 103 1.1.2.2 nathanw void dk_sc_init(struct dk_softc *, void *, char *); 104 1.1.2.2 nathanw 105 1.1.2.2 nathanw int dk_open(struct dk_intf *, struct dk_softc *, dev_t, 106 1.1.2.2 nathanw int, int, struct proc *); 107 1.1.2.2 nathanw int dk_close(struct dk_intf *, struct dk_softc *, dev_t, 108 1.1.2.2 nathanw int, int, struct proc *); 109 1.1.2.2 nathanw void dk_strategy(struct dk_intf *, struct dk_softc *, struct buf *); 110 1.1.2.2 nathanw int dk_size(struct dk_intf *, struct dk_softc *, dev_t); 111 1.1.2.2 nathanw int dk_ioctl(struct dk_intf *, struct dk_softc *, dev_t, 112 1.1.2.2 nathanw u_long, caddr_t, int, struct proc *); 113 1.1.2.2 nathanw int dk_dump(struct dk_intf *, struct dk_softc *, dev_t, 114 1.1.2.2 nathanw daddr_t, caddr_t, size_t); 115 1.1.2.2 nathanw void dk_getdisklabel(struct dk_intf *, struct dk_softc *, dev_t); 116 1.1.2.2 nathanw void dk_getdefaultlabel(struct dk_intf *, struct dk_softc *, 117 1.1.2.2 nathanw struct disklabel *); 118 1.1.2.2 nathanw 119 1.1.2.2 nathanw int dk_lookup(char *, struct proc *, struct vnode **); 120
Indexes created Tue Oct 21 12:09:54 GMT 2025