1 /* 2 * Copyright (c) 2003,2004 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * ---------------------------------------------------------------------------- 35 * "THE BEER-WARE LICENSE" (Revision 42): 36 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you 37 * can do whatever you want with this stuff. If we meet some day, and you think 38 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 39 * ---------------------------------------------------------------------------- 40 * 41 * $FreeBSD: src/sys/sys/disk.h,v 1.16.2.3 2001/06/20 16:11:01 scottl Exp $ 42 */ 43 44 #ifndef _SYS_DISK_H_ 45 #define _SYS_DISK_H_ 46 47 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES) 48 #error "This file should not be included by userland programs." 49 #endif 50 51 #ifndef _SYS_DISKSLICE_H_ 52 #include <sys/diskslice.h> 53 #endif 54 #ifndef _SYS_QUEUE_H_ 55 #include <sys/queue.h> 56 #endif 57 #ifndef _SYS_MSGPORT_H_ 58 #include <sys/msgport.h> 59 #endif 60 #ifndef _SYS_DMSG_H_ 61 #include <sys/dmsg.h> 62 #endif 63 64 /* 65 * Media information structure - filled in by the media driver. 66 * 67 * NOTE: d_serialno is copied on the call to setdiskinfo and need 68 * not be valid after that. 69 */ 70 struct disk_info { 71 /* 72 * These fields are required. Most drivers will load a disk_info 73 * structure in the device open function with the media parameters 74 * and call disk_setdiskinfo(). 75 * 76 * Note that only one of d_media_size or d_media_blocks should be 77 * filled in. 78 * 79 * d_media_size media size in bytes 80 * d_media_blocks media size in blocks (e.g. total sectors) 81 * d_media_blksize media block size / sector size 82 * d_dsflags disklabel management flags 83 */ 84 u_int64_t d_media_size; 85 u_int64_t d_media_blocks; 86 int d_media_blksize; 87 u_int d_dsflags; 88 89 /* 90 * Optional fields, leave 0 if not known 91 */ 92 u_int d_type; /* DTYPE_xxx */ 93 u_int d_nheads; 94 u_int d_ncylinders; 95 u_int d_secpertrack; 96 u_int d_secpercyl; 97 u_int d_trimflag; 98 char *d_serialno; 99 }; 100 101 /* 102 * d_dsflags, also used for dsopen() - control disklabel processing 103 * 104 * COMPATPARTA - used by scsi devices to allow CDs to boot from cd0a. 105 * cd's don't have disklabels and the default compat label 106 * does not implement an 'a' partition. 107 * 108 * COMPATMBR - used by the vn device to request that one sector be 109 * reserved as if an MBR were present even when one isn't. 110 * 111 * MBRQUIET - silently ignore MBR probe if unable to read sector 0. 112 * used by VN. 113 * 114 * DEVICEMAPPER - used by the device mapper (dm). Adds a '.' between the 115 * device name and the slice/part stuff (i.e. foo.s0). 116 * 117 * RAWPSIZE - use the dev_psize of the underlying raw device if the top 118 * psize fails. 119 */ 120 #define DSO_NOLABELS 0x0001 121 #define DSO_ONESLICE 0x0002 122 #define DSO_COMPATLABEL 0x0004 123 #define DSO_COMPATPARTA 0x0008 124 #define DSO_COMPATMBR 0x0010 125 #define DSO_RAWEXTENSIONS 0x0020 126 #define DSO_MBRQUIET 0x0040 127 #define DSO_DEVICEMAPPER 0x0080 128 #define DSO_RAWPSIZE 0x0100 129 130 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 131 132 /* 133 * Disk management structure - automated disklabel support. 134 */ 135 struct disk { 136 struct dev_ops *d_dev_ops; /* our device switch */ 137 struct dev_ops *d_raw_ops; /* the raw device switch */ 138 u_int d_flags; 139 int d_opencount; /* The current open count */ 140 cdev_t d_rawdev; /* backing raw device */ 141 cdev_t d_cdev; /* special whole-disk part */ 142 struct diskslices *d_slice; 143 struct disk_info d_info; /* info structure for media */ 144 void *d_unused01; 145 void *d_unused02; 146 void *d_unused03; 147 const char *d_disktype; /* Disk type information */ 148 LIST_ENTRY(disk) d_list; 149 kdmsg_iocom_t d_iocom; /* cluster import/export */ 150 int d_refs; /* interlock destruction */ 151 }; 152 153 #endif 154 155 /* 156 * d_flags 157 */ 158 #define DISKFLAG_LOCK 0x0001 159 #define DISKFLAG_WANTED 0x0002 160 #define DISKFLAG_MARKER 0x0004 161 162 #ifdef _KERNEL 163 cdev_t disk_create (int unit, struct disk *disk, struct dev_ops *raw_ops); 164 cdev_t disk_create_clone (int unit, struct disk *disk, struct dev_ops *raw_ops); 165 cdev_t disk_create_named(const char *name, int unit, struct disk *dp, struct dev_ops *raw_ops); 166 cdev_t disk_create_named_clone(const char *name, int unit, struct disk *dp, struct dev_ops *raw_ops); 167 cdev_t disk_locate (const char *devname); 168 void disk_destroy (struct disk *disk); 169 void disk_setdiskinfo (struct disk *disk, struct disk_info *info); 170 int disk_setdisktype(struct disk *disk, const char *type); 171 int disk_getopencount(struct disk *disk); 172 void disk_setdiskinfo_sync(struct disk *disk, struct disk_info *info); 173 int disk_dumpcheck (cdev_t dev, u_int64_t *count, u_int64_t *blkno, u_int *secsize); 174 int disk_dumpconf(cdev_t dev, u_int onoff); 175 struct disk *disk_enumerate (struct disk *marker, struct disk *dp); 176 void disk_enumerate_stop (struct disk *marker, struct disk *dp); 177 void disk_invalidate (struct disk *disk); 178 void disk_unprobe(struct disk *disk); 179 180 void disk_msg_send(uint32_t cmd, void *load, void *load2); 181 void disk_msg_send_sync(uint32_t cmd, void *load, void *load2); 182 void disk_config(void *); 183 184 int bounds_check_with_mediasize(struct bio *bio, int secsize, uint64_t mediasize); 185 186 void disk_iocom_init(struct disk *dp); 187 void disk_iocom_update(struct disk *dp); 188 void disk_iocom_uninit(struct disk *dp); 189 int disk_iocom_ioctl(struct disk *dp, u_long cmd, void *data); 190 void disk_clusterctl_wakeup(kdmsg_iocom_t *iocom); 191 192 typedef struct disk_msg { 193 struct lwkt_msg hdr; 194 void *load; 195 void *load2; 196 } *disk_msg_t; 197 198 #define DISK_DISK_PROBE 0x01 199 #define DISK_DISK_DESTROY 0x02 200 #define DISK_SLICE_REPROBE 0x03 201 #define DISK_DISK_REPROBE 0x04 202 #define DISK_UNPROBE 0x05 203 #define DISK_SYNC 0x99 204 205 206 #endif /* _KERNEL */ 207 208 #endif /* _SYS_DISK_H_ */ 209