/* * Copyright (c) 2003,2004 The DragonFly Project. All rights reserved. * * This code is derived from software contributed to The DragonFly Project * by Matthew Dillon <dillon@backplane.com> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name of The DragonFly Project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific, prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * ---------------------------------------------------------------------------- * "THE BEER-WARE LICENSE" (Revision 42): * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you * can do whatever you want with this stuff. If we meet some day, and you think * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp * ---------------------------------------------------------------------------- * * $FreeBSD: src/sys/sys/disk.h,v 1.16.2.3 2001/06/20 16:11:01 scottl Exp $ */ #ifndef _SYS_DISK_H_ #define _SYS_DISK_H_ #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES) #error "This file should not be included by userland programs." #endif #ifndef _SYS_DISKSLICE_H_ #include <sys/diskslice.h> #endif #ifndef _SYS_QUEUE_H_ #include <sys/queue.h> #endif #ifndef _SYS_MSGPORT_H_ #include <sys/msgport.h> #endif #ifndef _SYS_DMSG_H_ #include <sys/dmsg.h> #endif /* * Media information structure - filled in by the media driver. * * NOTE: d_serialno is copied on the call to setdiskinfo and need * not be valid after that. */ struct disk_info { /* * These fields are required. Most drivers will load a disk_info * structure in the device open function with the media parameters * and call disk_setdiskinfo(). * * Note that only one of d_media_size or d_media_blocks should be * filled in. * * d_media_size media size in bytes * d_media_blocks media size in blocks (e.g. total sectors) * d_media_blksize media block size / sector size * d_dsflags disklabel management flags */ u_int64_t d_media_size; u_int64_t d_media_blocks; int d_media_blksize; u_int d_dsflags; /* * Optional fields, leave 0 if not known */ u_int d_type; /* DTYPE_xxx */ u_int d_nheads; u_int d_ncylinders; u_int d_secpertrack; u_int d_secpercyl; u_int d_trimflag; char *d_serialno; }; /* * d_dsflags, also used for dsopen() - control disklabel processing * * COMPATPARTA - used by scsi devices to allow CDs to boot from cd0a. * cd's don't have disklabels and the default compat label * does not implement an 'a' partition. * * MBRQUIET - silently ignore MBR probe if unable to read sector 0. * used by VN. * * DEVICEMAPPER - used by the device mapper (dm). Adds a '.' between the * device name and the slice/part stuff (i.e. foo.s0). * * RAWPSIZE - use the dev_psize of the underlying raw device if the top * psize fails. */ #define DSO_NOLABELS 0x0001 #define DSO_ONESLICE 0x0002 #define DSO_COMPATLABEL 0x0004 #define DSO_COMPATPARTA 0x0008 /* 0x0010 unused; was DSO_COMPATMBR */ #define DSO_RAWEXTENSIONS 0x0020 #define DSO_MBRQUIET 0x0040 #define DSO_DEVICEMAPPER 0x0080 #define DSO_RAWPSIZE 0x0100 /* 0x0200 unused; was DSO_NOMBR */ #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) /* * Disk management structure - automated disklabel support. */ struct disk { struct dev_ops *d_dev_ops; /* our device switch */ struct dev_ops *d_raw_ops; /* the raw device switch */ u_int d_flags; int d_opencount; /* The current open count */ cdev_t d_rawdev; /* backing raw device */ cdev_t d_cdev; /* special whole-disk part */ struct diskslices *d_slice; struct disk_info d_info; /* info structure for media */ void *d_unused01; void *d_unused02; void *d_unused03; const char *d_disktype; /* Disk type information */ LIST_ENTRY(disk) d_list; kdmsg_iocom_t d_iocom; /* cluster import/export */ int d_refs; /* interlock destruction */ }; #endif /* * d_flags */ #define DISKFLAG_LOCK 0x0001 #define DISKFLAG_WANTED 0x0002 #define DISKFLAG_MARKER 0x0004 #ifdef _KERNEL cdev_t disk_create (int unit, struct disk *disk, struct dev_ops *raw_ops); cdev_t disk_create_clone (int unit, struct disk *disk, struct dev_ops *raw_ops); cdev_t disk_create_named(const char *name, int unit, struct disk *dp, struct dev_ops *raw_ops); cdev_t disk_create_named_clone(const char *name, int unit, struct disk *dp, struct dev_ops *raw_ops); cdev_t disk_locate (const char *devname); void disk_destroy (struct disk *disk); void disk_setdiskinfo (struct disk *disk, struct disk_info *info); int disk_setdisktype(struct disk *disk, const char *type); int disk_getopencount(struct disk *disk); void disk_setdiskinfo_sync(struct disk *disk, struct disk_info *info); int disk_dumpcheck (cdev_t dev, u_int64_t *count, u_int64_t *blkno, u_int *secsize); int disk_dumpconf(cdev_t dev, u_int onoff); struct disk *disk_enumerate (struct disk *marker, struct disk *dp); void disk_enumerate_stop (struct disk *marker, struct disk *dp); void disk_invalidate (struct disk *disk); void disk_unprobe(struct disk *disk); void disk_msg_send(uint32_t cmd, void *load, void *load2); void disk_msg_send_sync(uint32_t cmd, void *load, void *load2); void disk_config(void *); int bounds_check_with_mediasize(struct bio *bio, int secsize, uint64_t mediasize); void disk_iocom_init(struct disk *dp); void disk_iocom_update(struct disk *dp); void disk_iocom_uninit(struct disk *dp); int disk_iocom_ioctl(struct disk *dp, u_long cmd, void *data); void disk_clusterctl_wakeup(kdmsg_iocom_t *iocom); typedef struct disk_msg { struct lwkt_msg hdr; void *load; void *load2; } *disk_msg_t; #define DISK_DISK_PROBE 0x01 #define DISK_DISK_DESTROY 0x02 #define DISK_SLICE_REPROBE 0x03 #define DISK_DISK_REPROBE 0x04 #define DISK_UNPROBE 0x05 #define DISK_SYNC 0x99 #endif /* _KERNEL */ #endif /* _SYS_DISK_H_ */
