NetBSD/sys/arch/sparc/scsi/sun_disklabel.c

144 lines
4.6 KiB
C

/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)sun_disklabel.c 8.1 (Berkeley) 6/11/93
*
* from: Header: sun_disklabel.c,v 1.5 92/06/17 07:04:12 torek Exp
* $Id: sun_disklabel.c,v 1.2 1993/11/14 10:47:54 deraadt Exp $
*/
/*
* SunOS disk label code.
*/
#include <sys/param.h>
#include <sys/disklabel.h>
#include <sys/device.h>
#include <sys/disk.h>
#include <sys/ioctl.h>
#include <sparc/scsi/sun_disklabel.h>
/*
* Take a sector (cp) containing a SunOS disk label and set lp to a BSD
* disk label.
*/
int
sun_disklabel(cp, lp)
register caddr_t cp;
register struct disklabel *lp;
{
register u_short *sp;
register struct sun_disklabel *sl;
register int i, v;
sp = (u_short *)(cp + sizeof(struct sun_disklabel));
--sp;
v = 0;
while (sp >= (u_short *)cp)
v ^= *sp--;
if (v)
return (0);
sl = (struct sun_disklabel *)cp;
lp->d_magic = 0; /* denote as pseudo */
lp->d_ncylinders = sl->sl_ncylinders;
lp->d_acylinders = sl->sl_acylinders;
v = (lp->d_ntracks = sl->sl_ntracks) *
(lp->d_nsectors = sl->sl_nsectors);
lp->d_secpercyl = v;
lp->d_npartitions = 8;
for (i = 0; i < 8; i++) {
lp->d_partitions[i].p_offset =
sl->sl_part[i].sdkp_cyloffset * v;
lp->d_partitions[i].p_size = sl->sl_part[i].sdkp_nsectors;
}
return (1);
}
int
sun_dkioctl(dk, cmd, data, partition)
struct dkdevice *dk;
int cmd;
caddr_t data;
int partition;
{
register struct partition *p;
switch (cmd) {
case DKIOCGGEOM:
#define geom ((struct sun_dkgeom *)data)
bzero(data, sizeof(*geom));
geom->sdkc_ncylinders = dk->dk_label.d_ncylinders;
geom->sdkc_acylinders = dk->dk_label.d_acylinders;
geom->sdkc_ntracks = dk->dk_label.d_ntracks;
geom->sdkc_nsectors = dk->dk_label.d_nsectors;
geom->sdkc_interleave = dk->dk_label.d_interleave;
geom->sdkc_sparespercyl = dk->dk_label.d_sparespercyl;
geom->sdkc_rpm = dk->dk_label.d_rpm;
geom->sdkc_pcylinders =
dk->dk_label.d_ncylinders + dk->dk_label.d_acylinders;
#undef geom
break;
case DKIOCINFO:
/* Homey don't do DKIOCINFO */
bzero(data, sizeof(struct sun_dkctlr));
break;
case DKIOCGPART:
if (dk->dk_label.d_secpercyl == 0)
return (ERANGE); /* XXX */
p = &dk->dk_label.d_partitions[partition];
if (p->p_offset % dk->dk_label.d_secpercyl != 0)
return (ERANGE); /* XXX */
#define part ((struct sun_dkpart *)data)
part->sdkp_cyloffset = p->p_offset / dk->dk_label.d_secpercyl;
part->sdkp_nsectors = p->p_size;
#undef part
break;
default:
return (-1);
}
return (0);
}