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/* $NetBSD: sd.c,v 1.8 1995/09/23 17:19:58 thorpej Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Van Jacobson of Lawrence Berkeley Laboratory and the Systems
* Programming Group of the University of Utah Computer Science Department.
*
* 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.
*
* from: Utah $Hdr: sd.c 1.9 92/12/21$
*
* @(#)sd.c 8.1 (Berkeley) 6/10/93
*/
/*
* SCSI CCS disk driver
*/
#include <sys/param.h>
#include <sys/disklabel.h>
#include "stand.h"
#include "samachdep.h"
#define _IOCTL_
#include <hp300/dev/scsireg.h>
struct disklabel sdlabel;
struct sdminilabel {
u_short npart;
u_long offset[MAXPARTITIONS];
};
struct sd_softc {
int sc_ctlr;
int sc_unit;
int sc_part;
char sc_retry;
char sc_alive;
short sc_blkshift;
struct sdminilabel sc_pinfo;
} sd_softc[NSCSI][NSD];
#define SDRETRY 2
sdinit(ctlr, unit)
int ctlr, unit;
{
register struct sd_softc *ss = &sd_softc[ctlr][unit];
u_char stat;
int capbuf[2];
stat = scsi_test_unit_rdy(ctlr, unit);
if (stat) {
/* drive may be doing RTZ - wait a bit */
if (stat == STS_CHECKCOND) {
DELAY(1000000);
stat = scsi_test_unit_rdy(ctlr, unit);
}
if (stat) {
printf("sd(%d,%d,0,0): init failed (stat=%x)\n",
ctlr, unit, stat);
return (0);
}
}
/*
* try to get the drive block size.
*/
capbuf[0] = 0;
capbuf[1] = 0;
stat = scsi_read_capacity(ctlr, unit,
(u_char *)capbuf, sizeof(capbuf));
if (stat == 0) {
if (capbuf[1] > DEV_BSIZE)
for (; capbuf[1] > DEV_BSIZE; capbuf[1] >>= 1)
++ss->sc_blkshift;
}
ss->sc_alive = 1;
return (1);
}
sdreset(ctlr, unit)
int ctlr, unit;
{
}
#ifdef COMPAT_NOLABEL
struct sdminilabel defaultpinfo = {
8,
{ 1024, 17408, 0, 17408, 115712, 218112, 82944, 115712 }
};
#endif
char io_buf[MAXBSIZE];
sdgetinfo(ss)
register struct sd_softc *ss;
{
register struct sdminilabel *pi = &ss->sc_pinfo;
register struct disklabel *lp = &sdlabel;
char *msg, *getdisklabel();
int sdstrategy(), err;
size_t i;
bzero((caddr_t)lp, sizeof *lp);
lp->d_secsize = (DEV_BSIZE << ss->sc_blkshift);
if (err = sdstrategy(ss, F_READ,
LABELSECTOR,
lp->d_secsize ? lp->d_secsize : DEV_BSIZE,
io_buf, &i) < 0) {
printf("sdgetinfo: sdstrategy error %d\n", err);
return(0);
}
msg = getdisklabel(io_buf, lp);
if (msg) {
printf("sd(%d,%d,%d): WARNING: %s, ",
ss->sc_ctlr, ss->sc_unit, ss->sc_part, msg);
#ifdef COMPAT_NOLABEL
printf("using old default partitioning\n");
*pi = defaultpinfo;
#else
printf("defining `c' partition as entire disk\n");
pi->npart = 3;
pi->offset[0] = pi->offset[1] = -1;
pi->offset[2] = 0;
#endif
} else {
pi->npart = lp->d_npartitions;
for (i = 0; i < pi->npart; i++)
pi->offset[i] = lp->d_partitions[i].p_size == 0 ?
-1 : lp->d_partitions[i].p_offset;
}
return(1);
}
sdopen(f, ctlr, unit, part)
struct open_file *f;
int ctlr, unit, part;
{
register struct sd_softc *ss;
#ifdef SD_DEBUG
if (debug)
printf("sdopen: ctlr=%d unit=%d part=%d\n",
ctlr, unit, part);
#endif
if (ctlr >= NSCSI || scsialive(ctlr) == 0)
return (EADAPT);
if (unit >= NSD)
return (ECTLR);
ss = &sd_softc[ctlr][unit];
ss->sc_part = part;
ss->sc_unit = unit;
ss->sc_ctlr = ctlr;
if (ss->sc_alive == 0) {
if (sdinit(ctlr, unit) == 0)
return (ENXIO);
if (sdgetinfo(ss) == 0)
return (ERDLAB);
}
if (part >= ss->sc_pinfo.npart || ss->sc_pinfo.offset[part] == -1)
return (EPART);
f->f_devdata = (void *)ss;
return (0);
}
sdclose(f)
struct open_file *f;
{
struct sd_softc *ss = f->f_devdata;
/*
* Mark the disk `not alive' so that the disklabel
* will be re-loaded at next open.
*/
bzero(ss, sizeof(sd_softc));
f->f_devdata = NULL;
return (0);
}
sdstrategy(ss, func, dblk, size, v_buf, rsize)
register struct sd_softc *ss;
int func;
daddr_t dblk;
size_t size;
void *v_buf;
size_t *rsize;
{
char *buf = v_buf;
register int ctlr = ss->sc_ctlr;
register int unit = ss->sc_unit;
daddr_t blk = (dblk + ss->sc_pinfo.offset[ss->sc_part])>> ss->sc_blkshift;
u_int nblk = size >> ss->sc_blkshift;
char stat;
if (size == 0)
return(0);
ss->sc_retry = 0;
#ifdef SD_DEBUG
if (debug)
printf("sdstrategy(%d,%d): size=%d blk=%d nblk=%d\n",
ctlr, unit, size, blk, nblk);
#endif
retry:
if (func == F_READ)
stat = scsi_tt_read(ctlr, unit, buf, size, blk, nblk);
else
stat = scsi_tt_write(ctlr, unit, buf, size, blk, nblk);
if (stat) {
printf("sd(%d,%d,%d): block=%x, error=0x%x\n",
ctlr, unit, ss->sc_part, blk, stat);
if (++ss->sc_retry > SDRETRY)
return(EIO);
goto retry;
}
*rsize = size;
return(0);
}
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