xref: /csrg-svn/sys/hp300/dev/sd_compat.c (revision 63151)
157330Shibler /*
2*63151Sbostic  * Copyright (c) 1990, 1993
3*63151Sbostic  *	The Regents of the University of California.  All rights reserved.
457330Shibler  *
557330Shibler  * This code is derived from software contributed to Berkeley by
657330Shibler  * Van Jacobson of Lawrence Berkeley Laboratory.
757330Shibler  *
857330Shibler  * %sccs.include.redist.c%
957330Shibler  *
10*63151Sbostic  *	@(#)sd_compat.c	8.1 (Berkeley) 06/10/93
1157330Shibler  */
1257330Shibler 
1357330Shibler /*
1457330Shibler  * Compatibility for SCSI disks without labels.
1557330Shibler  */
1657330Shibler #include "sd.h"
1757330Shibler #if NSD > 0
1857330Shibler 
1957330Shibler #include <sys/param.h>
2057330Shibler #include <sys/disklabel.h>
2157330Shibler #include <hp/dev/device.h>
2257330Shibler #include <hp300/dev/sdvar.h>
2357330Shibler 
2457330Shibler /*
2557330Shibler  * Since the SCSI standard tends to hide the disk structure, we define
2657330Shibler  * partitions in terms of DEV_BSIZE blocks.  The default partition table
2757330Shibler  * (for an unlabeled disk) reserves 512K for a boot area, has an 8 meg
2857330Shibler  * root (A) and 32 meg of swap (B).  The rest of the space on the drive
2957330Shibler  * goes in the G partition.  As usual, the C partition covers the entire
3057330Shibler  * disk (including the boot area).
3157330Shibler  *
3257330Shibler  * We also define the D, E, F and H partitions as an alternative to B and G.
3357330Shibler  * D is 48Mb, starts after A and is intended for swapping.
3457330Shibler  * E is 50Mb, starts after D and is intended for /usr.
3557330Shibler  * F starts after E and is what ever is left.
3657330Shibler  * H starts after D and is what ever is left (i.e. combo of E and F).
3757330Shibler  */
3857330Shibler struct partition sddefaultpart[] = {
3957330Shibler 	{  16384,   1024, 1024, FS_BSDFFS, 8 },
4057330Shibler 	{  65536,  17408,    0, FS_SWAP,   0 },
4158592Shibler 	{      0,      0,    0, FS_BOOT,   0 },
4257330Shibler 	{  98304,  17408,    0, FS_SWAP,   0 },
4357330Shibler 	{ 102400, 115712, 1024, FS_BSDFFS, 8 },
4457330Shibler 	{      0, 218112, 1024, FS_BSDFFS, 8 },
4557330Shibler 	{      0,  82944, 1024, FS_BSDFFS, 8 },
4657330Shibler 	{      0, 115712, 1024, FS_BSDFFS, 8 }
4757330Shibler };
4857330Shibler int sdnumdefaultpart = sizeof(sddefaultpart)/sizeof(sddefaultpart[0]);
4957330Shibler 
5057330Shibler extern struct sd_softc sd_softc[];
5157330Shibler 
sdmakedisklabel(unit,lp)5257330Shibler sdmakedisklabel(unit, lp)
5357330Shibler 	int unit;
5457330Shibler 	register struct disklabel *lp;
5557330Shibler {
5657330Shibler 	register struct sd_softc *sc = &sd_softc[unit];
5757330Shibler 	register struct partition *pi, *dpi;
5857330Shibler 	register int dcount;
5957330Shibler 
6057330Shibler 	lp->d_secperunit = sc->sc_blks;
6157330Shibler 	lp->d_rpm = 3600;
6257330Shibler 	lp->d_interleave = 1;
6357330Shibler 	if (sc->sc_flags & SDF_RMEDIA)
6457330Shibler 		lp->d_flags |= D_REMOVABLE;
6557330Shibler 	lp->d_npartitions = sdnumdefaultpart;
6657330Shibler 
6757330Shibler 	pi = lp->d_partitions;
6857330Shibler 	dpi = sddefaultpart;
6957330Shibler 	dcount = sdnumdefaultpart;
7057330Shibler 	while (dcount-- > 0)
7157330Shibler 		*pi++ = *dpi++;
7257330Shibler 
7357330Shibler 	pi = lp->d_partitions;
7457330Shibler 
7557330Shibler 	/*
7657330Shibler 	 * C gets everything
7757330Shibler 	 */
7857330Shibler 	pi[2].p_size = sc->sc_blks;
7957330Shibler 	/*
8057330Shibler 	 * G gets from end of B to end of disk
8157330Shibler 	 */
8257330Shibler 	pi[6].p_size = sc->sc_blks - pi[6].p_offset;
8357330Shibler 	/*
8457330Shibler 	 * H gets from end of D to end of disk
8557330Shibler 	 */
8657330Shibler 	pi[7].p_size = sc->sc_blks - pi[7].p_offset;
8757330Shibler 	/*
8857330Shibler 	 * If disk is big enough, define E and F
8957330Shibler 	 */
9057330Shibler 	if (sc->sc_blks > pi[5].p_offset)
9157330Shibler 		pi[5].p_size = sc->sc_blks - pi[5].p_offset;
9257330Shibler 	else {
9357330Shibler 		pi[4].p_offset = pi[4].p_size = 0;
9457330Shibler 		pi[5].p_offset = pi[5].p_size = 0;
9557330Shibler 	}
9657330Shibler }
9757330Shibler #endif
98