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disklabel.h revision 1.6.2.1 
      1  1.6.2.1      tls /*	$NetBSD: disklabel.h,v 1.6.2.1 2013/06/23 06:20:13 tls Exp $	*/
      2      1.1      cgd 
      3      1.1      cgd /*
      4      1.1      cgd  * Copyright (c) 1994 Christopher G. Demetriou
      5      1.1      cgd  * All rights reserved.
      6      1.1      cgd  *
      7      1.1      cgd  * Redistribution and use in source and binary forms, with or without
      8      1.1      cgd  * modification, are permitted provided that the following conditions
      9      1.1      cgd  * are met:
     10      1.1      cgd  * 1. Redistributions of source code must retain the above copyright
     11      1.1      cgd  *    notice, this list of conditions and the following disclaimer.
     12      1.1      cgd  * 2. Redistributions in binary form must reproduce the above copyright
     13      1.1      cgd  *    notice, this list of conditions and the following disclaimer in the
     14      1.1      cgd  *    documentation and/or other materials provided with the distribution.
     15      1.1      cgd  * 3. All advertising materials mentioning features or use of this software
     16      1.1      cgd  *    must display the following acknowledgement:
     17      1.1      cgd  *      This product includes software developed by Christopher G. Demetriou.
     18      1.1      cgd  * 4. The name of the author may not be used to endorse or promote products
     19      1.1      cgd  *    derived from this software without specific prior written permission
     20      1.1      cgd  *
     21      1.1      cgd  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22      1.1      cgd  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23      1.1      cgd  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24      1.1      cgd  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25      1.1      cgd  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26      1.1      cgd  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27      1.1      cgd  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28      1.1      cgd  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29      1.1      cgd  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30      1.1      cgd  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31      1.1      cgd  */
     32      1.1      cgd 
     33      1.1      cgd #ifndef _MACHINE_DISKLABEL_H_
     34      1.1      cgd #define _MACHINE_DISKLABEL_H_
     35      1.1      cgd 
     36      1.6      abs #define LABELUSESMBR		0	/* no MBR partitionning */
     37      1.6      abs #define	LABELSECTOR		0	/* sector containing label */
     38      1.6      abs #define	LABELOFFSET		64	/* offset of label in sector */
     39  1.6.2.1      tls #define	MAXPARTITIONS		12	/* number of partitions */
     40      1.6      abs #define	OLDMAXPARTITIONS 	8	/* number of partitions before nb-6 */
     41      1.6      abs #define	RAW_PART		2	/* raw partition: xx?c */
     42  1.6.2.1      tls /*
     43  1.6.2.1      tls  * In NetBSD 6 we eroneously used a too large MAXPARTITIONS value (disklabel
     44  1.6.2.1      tls  * overlapped with important parts of the bootblocks and made some machines
     45  1.6.2.1      tls  * unbootable).
     46  1.6.2.1      tls  */
     47  1.6.2.1      tls #define	__TMPBIGMAXPARTITIONS	16	/* compatibility with 6.0 installs */
     48      1.6      abs 
     49      1.6      abs /*
     50      1.6      abs  * We use the highest bit of the minor number for the partition number.
     51      1.6      abs  * This maintains backward compatibility with device nodes created before
     52      1.6      abs  * MAXPARTITIONS was increased.
     53  1.6.2.1      tls  * Temporarily MAXPARTITIONS was 16, so we use that to keep compatibility
     54  1.6.2.1      tls  * with existing installations.
     55      1.6      abs  */
     56  1.6.2.1      tls #define __VAX_MAXDISKS	((1 << 20) / __TMPBIGMAXPARTITIONS)
     57      1.6      abs #define DISKUNIT(dev)	((minor(dev) / OLDMAXPARTITIONS) % __VAX_MAXDISKS)
     58      1.6      abs #define DISKPART(dev)	((minor(dev) % OLDMAXPARTITIONS) + \
     59      1.6      abs     ((minor(dev) / (__VAX_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS))
     60      1.6      abs #define	DISKMINOR(unit, part) \
     61      1.6      abs     (((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \
     62      1.6      abs      ((part) / OLDMAXPARTITIONS) * (__VAX_MAXDISKS * OLDMAXPARTITIONS))
     63      1.1      cgd 
     64      1.1      cgd /* Just a dummy */
     65      1.3  mycroft #ifndef _LOCORE
     66      1.1      cgd struct cpu_disklabel {
     67      1.1      cgd 	int	cd_dummy;			/* must have one element. */
     68      1.1      cgd };
     69      1.2    ragge #endif
     70      1.1      cgd #endif /* _MACHINE_DISKLABEL_H_ */
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