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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _DEFECT_H
#define _DEFECT_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* This file contains definitions related to the defect list.
*/
extern struct defect_list work_list;
extern struct dkbad badmap;
/*
* This is the structure of the header of a defect list. It is always
* the first sector on a track containing a defect list.
*/
struct defectHeader {
uint_t magicno;
int count;
int cksum;
int save[125];
};
/*
* This is the structure of a defect. Defects are stored on the disk
* as an array of these structures following the defect header.
*/
struct defect_entry {
short cyl;
short head;
short sect;
short nbits;
int bfi;
};
/*
* This is the internal representation of a defect list. We store
* the header statically, but dynamically allocate space for the
* actual defects, since their number may vary. The flags field is
* used to keep track of whether the list has been modified.
*/
struct defect_list {
struct defectHeader header;
struct defect_entry *list;
int flags;
};
/*
* This defines the number of copies of the defect list kept on the disk.
* They are stored 1/track, starting at track 0 of the second alternate cyl.
*/
#define LISTCOUNT 2
/*
* These defines are the flags for the defect list.
*/
#define LIST_DIRTY 0x01 /* List needs to be synced */
#define LIST_RELOAD 0x02 /* Reload list after formatting (SCSI) */
#define LIST_PGLIST 0x04 /* embedded SCSI - both manufacturer's (P) */
/* and grown (G) list */
/*
* Miscellaneous defines.
*/
#define DEFECT_MAGIC 0x89898989 /* magic no for defect lists */
#define NO_CHECKSUM 0x1 /* magic no for no checksum in */
/* defect list */
#define UNKNOWN (-1) /* value used in defect fields */
#define DEF_PRINTHEADER " num cyl hd bfi len sec blk\n"
/*
* This defines the number of copies of the bad block table kept on the
* disk. They are stored in the first 5 even sectors on the last track
* of the disk. Note: this also defines the number of backup labels,
* which are kept in the first 5 odd sectors of the appropriate
* track.
*/
#define BAD_LISTCNT 5
/*
* Prototypes for ANSI C compilers
*/
void read_list(struct defect_list *list);
int makebfi(struct defect_list *list, struct defect_entry *def);
void calc_bfi(struct defect_list *list, struct defect_entry *def,
struct defect_entry *end, int skew);
int makelsect(struct defect_list *list);
int checkdefsum(struct defect_list *list, int mode);
void pr_defect(struct defect_entry *def, int num);
int sort_defect(struct defect_entry *def, struct defect_list *list);
void write_deflist(struct defect_list *list);
void add_ldef(diskaddr_t blkno, struct defect_list *list);
void add_def(struct defect_entry *def, struct defect_list *list,
int index);
void kill_deflist(struct defect_list *list);
/*
* This defines the size (in sectors) of the defect array given the number
* of defects in the array. It must be rounded to a sector boundary since
* that is the atomic disk size. We make a zero length list use up a
* sector because it is convenient to have malloc'd space in every
* non-null list.
*/
int deflist_size(int secsz, int sz);
#ifdef __cplusplus
}
#endif
#endif /* _DEFECT_H */
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