File: [local] / sys / arch / hp300 / dev / hd.c (download)
Revision 1.1, Tue Mar 4 16:05:41 2008 UTC (16 years, 2 months ago) by nbrk
Branch point for: MAIN
Initial revision
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/* $OpenBSD: hd.c,v 1.53 2007/06/21 20:23:07 miod Exp $ */
/* $NetBSD: rd.c,v 1.33 1997/07/10 18:14:08 kleink Exp $ */
/*
* Copyright (c) 1996, 1997 Jason R. Thorpe. All rights reserved.
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* 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. 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 $Hdr: rd.c 1.44 92/12/26$
*
* @(#)rd.c 8.2 (Berkeley) 5/19/94
*/
/*
* CS80/SS80 disk driver
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/disk.h>
#include <sys/disklabel.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/stat.h>
#include <sys/syslog.h>
#include <ufs/ffs/fs.h> /* for BBSIZE and SBSIZE */
#include <hp300/dev/hpibvar.h>
#include <hp300/dev/hdreg.h>
#include <hp300/dev/hdvar.h>
#ifdef USELEDS
#include <hp300/hp300/leds.h>
#endif
#ifndef HDRETRY
#define HDRETRY 5
#endif
#ifndef HDWAITC
#define HDWAITC 1 /* min time for timeout in seconds */
#endif
int hderrthresh = HDRETRY - 1; /* when to start reporting errors */
#ifdef DEBUG
/* error message tables */
const char *err_reject[16] = {
NULL,
NULL,
"channel parity error", /* 0x2000 */
NULL,
NULL,
"illegal opcode", /* 0x0400 */
"module addressing", /* 0x0200 */
"address bounds", /* 0x0100 */
"parameter bounds", /* 0x0080 */
"illegal parameter", /* 0x0040 */
"message sequence", /* 0x0020 */
NULL,
"message length", /* 0x0008 */
NULL,
NULL,
NULL
};
const char *err_fault[16] = {
NULL,
"cross unit", /* 0x4000 */
NULL,
"controller fault", /* 0x1000 */
NULL,
NULL,
"unit fault", /* 0x0200 */
NULL,
"diagnostic result", /* 0x0080 */
NULL,
"operator release request", /* 0x0020 */
"diagnostic release request", /* 0x0010 */
"internal maintenance release request", /* 0x0008 */
NULL,
"power fail", /* 0x0002 */
"retransmit" /* 0x0001 */
};
const char *err_access[16] = {
"illegal parallel operation", /* 0x8000 */
"uninitialized media", /* 0x4000 */
"no spares available", /* 0x2000 */
"not ready", /* 0x1000 */
"write protect", /* 0x0800 */
"no data found", /* 0x0400 */
NULL,
NULL,
"unrecoverable data overflow", /* 0x0080 */
"unrecoverable data", /* 0x0040 */
NULL,
"end of file", /* 0x0010 */
"end of volume", /* 0x0008 */
NULL,
NULL,
NULL
};
const char *err_info[16] = {
"operator release request", /* 0x8000 */
"diagnostic release request", /* 0x4000 */
"internal maintenance release request", /* 0x2000 */
"media wear", /* 0x1000 */
"latency induced", /* 0x0800 */
NULL,
NULL,
"auto sparing invoked", /* 0x0100 */
NULL,
"recoverable data overflow", /* 0x0040 */
"marginal data", /* 0x0020 */
"recoverable data", /* 0x0010 */
NULL,
"maintenance track overflow", /* 0x0004 */
NULL,
NULL
};
#define HDB_FOLLOW 0x01
#define HDB_STATUS 0x02
#define HDB_IDENT 0x04
#define HDB_IO 0x08
#define HDB_ASYNC 0x10
#define HDB_ERROR 0x80
int hddebug = HDB_ERROR | HDB_IDENT;
#endif
/*
* Misc. HW description, indexed by sc_type.
* Nothing really critical here, could do without it.
*/
const struct hdidentinfo hdidentinfo[] = {
{ HD7946AID, 0, "7945A", NHD7945ABPT,
NHD7945ATRK, 968, 108416 },
{ HD9134DID, 1, "9134D", NHD9134DBPT,
NHD9134DTRK, 303, 29088 },
{ HD9134LID, 1, "9122S", NHD9122SBPT,
NHD9122STRK, 77, 1232 },
{ HD7912PID, 0, "7912P", NHD7912PBPT,
NHD7912PTRK, 572, 128128 },
{ HD7914PID, 0, "7914P", NHD7914PBPT,
NHD7914PTRK, 1152, 258048 },
{ HD7958AID, 0, "7958A", NHD7958ABPT,
NHD7958ATRK, 1013, 255276 },
{ HD7957AID, 0, "7957A", NHD7957ABPT,
NHD7957ATRK, 1036, 159544 },
{ HD7933HID, 0, "7933H", NHD7933HBPT,
NHD7933HTRK, 1321, 789958 },
{ HD9134LID, 1, "9134L", NHD9134LBPT,
NHD9134LTRK, 973, 77840 },
{ HD7936HID, 0, "7936H", NHD7936HBPT,
NHD7936HTRK, 698, 600978 },
{ HD7937HID, 0, "7937H", NHD7937HBPT,
NHD7937HTRK, 698, 1116102 },
{ HD7914CTID, 0, "7914CT", NHD7914PBPT,
NHD7914PTRK, 1152, 258048 },
{ HD7946AID, 0, "7946A", NHD7945ABPT,
NHD7945ATRK, 968, 108416 },
{ HD9134LID, 1, "9122D", NHD9122SBPT,
NHD9122STRK, 77, 1232 },
{ HD7957BID, 0, "7957B", NHD7957BBPT,
NHD7957BTRK, 1269, 159894 },
{ HD7958BID, 0, "7958B", NHD7958BBPT,
NHD7958BTRK, 786, 297108 },
{ HD7959BID, 0, "7959B", NHD7959BBPT,
NHD7959BTRK, 1572, 594216 },
{ HD2200AID, 0, "2200A", NHD2200ABPT,
NHD2200ATRK, 1449, 654948 },
{ HD2203AID, 0, "2203A", NHD2203ABPT,
NHD2203ATRK, 1449, 1309896 }
};
const int numhdidentinfo = sizeof(hdidentinfo) / sizeof(hdidentinfo[0]);
bdev_decl(hd);
cdev_decl(hd);
int hdident(struct device *, struct hd_softc *,
struct hpibbus_attach_args *);
void hdreset(int, int, int);
void hdustart(struct hd_softc *);
void hdgetdisklabel(dev_t, struct hd_softc *, struct disklabel *, int);
void hdrestart(void *);
struct buf *hdfinish(struct hd_softc *, struct buf *);
void hdstart(void *);
void hdinterrupt(void *);
void hdgo(void *);
int hdstatus(struct hd_softc *);
int hderror(int);
#ifdef DEBUG
void hdprinterr(const char *, short, const char **);
#endif
int hdmatch(struct device *, void *, void *);
void hdattach(struct device *, struct device *, void *);
struct cfattach hd_ca = {
sizeof(struct hd_softc), hdmatch, hdattach
};
struct cfdriver hd_cd = {
NULL, "hd", DV_DISK
};
#define hdlock(rs) disk_lock(&(rs)->sc_dkdev)
#define hdunlock(rs) disk_unlock(&(rs)->sc_dkdev)
#define hdlookup(unit) (struct hd_softc *)device_lookup(&hd_cd, (unit))
int
hdmatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct hpibbus_attach_args *ha = aux;
return (hdident(parent, NULL, ha));
}
void
hdattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct hd_softc *sc = (struct hd_softc *)self;
struct hpibbus_attach_args *ha = aux;
if (hdident(parent, sc, ha) == 0) {
printf("\n%s: didn't respond to describe command!\n",
sc->sc_dev.dv_xname);
return;
}
/*
* Initialize and attach the disk structure.
*/
bzero(&sc->sc_dkdev, sizeof(sc->sc_dkdev));
sc->sc_dkdev.dk_name = sc->sc_dev.dv_xname;
disk_attach(&sc->sc_dkdev);
sc->sc_slave = ha->ha_slave;
sc->sc_punit = ha->ha_punit;
/* Initialize the hpib job queue entry */
sc->sc_hq.hq_softc = sc;
sc->sc_hq.hq_slave = sc->sc_slave;
sc->sc_hq.hq_start = hdstart;
sc->sc_hq.hq_go = hdgo;
sc->sc_hq.hq_intr = hdinterrupt;
#ifdef DEBUG
/* always report errors */
if (hddebug & HDB_ERROR)
hderrthresh = 0;
#endif
/* Initialize timeout structure */
timeout_set(&sc->sc_timeout, hdrestart, sc);
}
int
hdident(parent, sc, ha)
struct device *parent;
struct hd_softc *sc;
struct hpibbus_attach_args *ha;
{
struct cs80_describe desc;
u_char stat, cmd[3];
char name[7];
int i, id, n, ctlr, slave;
ctlr = parent->dv_unit;
slave = ha->ha_slave;
/* Verify that we have a CS80 device. */
if ((ha->ha_id & 0x200) == 0)
return (0);
/* Is it one of the disks we support? */
for (id = 0; id < numhdidentinfo; id++)
if (ha->ha_id == hdidentinfo[id].ri_hwid &&
ha->ha_punit <= hdidentinfo[id].ri_maxunum)
break;
if (id == numhdidentinfo)
return (0);
/*
* Reset device and collect description
*/
bzero(&desc, sizeof(desc));
stat = 0;
hdreset(ctlr, slave, ha->ha_punit);
cmd[0] = C_SUNIT(ha->ha_punit);
cmd[1] = C_SVOL(0);
cmd[2] = C_DESC;
hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd));
hpibrecv(ctlr, slave, C_EXEC, &desc, sizeof(desc));
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
if (desc.d_name == 0 && stat != 0)
return (0);
/*
* If we're just probing for the device, that's all the
* work we need to do.
*/
if (sc == NULL)
return (1);
bzero(name, sizeof(name));
n = desc.d_name;
for (i = 5; i >= 0; i--) {
name[i] = (n & 0xf) + '0';
n >>= 4;
}
#ifdef DEBUG
if (hddebug & HDB_IDENT) {
printf(": stat %d name: %x ('%s')\n", stat, desc.d_name, name);
printf(" iuw %x, maxxfr %d, ctype %d\n",
desc.d_iuw, desc.d_cmaxxfr, desc.d_ctype);
printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n",
desc.d_utype, desc.d_sectsize,
desc.d_blkbuf, desc.d_burstsize, desc.d_blocktime);
printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n",
desc.d_uavexfr, desc.d_retry, desc.d_access,
desc.d_maxint, desc.d_fvbyte, desc.d_rvbyte);
printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n",
desc.d_maxcyl, desc.d_maxhead, desc.d_maxsect,
desc.d_maxvsectl, desc.d_interleave);
printf("%s:", sc->sc_dev.dv_xname);
}
#endif
/*
* Take care of a couple of anomalies:
* 1. 7945A and 7946A both return same HW id
* 2. 9122S and 9134D both return same HW id
* 3. 9122D and 9134L both return same HW id
*/
switch (ha->ha_id) {
case HD7946AID:
if (bcmp(name, "079450", 6) == 0)
id = HD7945A;
else
id = HD7946A;
break;
case HD9134LID:
if (bcmp(name, "091340", 6) == 0)
id = HD9134L;
else
id = HD9122D;
break;
case HD9134DID:
if (bcmp(name, "091220", 6) == 0)
id = HD9122S;
else
id = HD9134D;
break;
}
sc->sc_type = id;
/*
* XXX We use DEV_BSIZE instead of the sector size value pulled
* XXX off the driver because all of this code assumes 512 byte
* XXX blocks. ICK!
*/
printf(": %s\n", hdidentinfo[id].ri_desc);
printf("%s: %luMB, %lu cyl, %lu head, %lu sec, %lu bytes/sec, %lu sec total\n",
sc->sc_dev.dv_xname,
hdidentinfo[id].ri_nblocks / (1048576 / DEV_BSIZE),
hdidentinfo[id].ri_ncyl, hdidentinfo[id].ri_ntpc,
hdidentinfo[id].ri_nbpt, DEV_BSIZE, hdidentinfo[id].ri_nblocks);
return (1);
}
void
hdreset(ctlr, slave, punit)
int ctlr, slave, punit;
{
struct hd_ssmcmd ssmc;
struct hd_srcmd src;
struct hd_clearcmd clear;
u_char stat;
bzero(&clear, sizeof(clear));
clear.c_unit = C_SUNIT(punit);
clear.c_cmd = C_CLEAR;
hpibsend(ctlr, slave, C_TCMD, &clear, sizeof(clear));
hpibswait(ctlr, slave);
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
bzero(&src, sizeof(src));
src.c_unit = C_SUNIT(HDCTLR);
src.c_nop = C_NOP;
src.c_cmd = C_SREL;
src.c_param = C_REL;
hpibsend(ctlr, slave, C_CMD, &src, sizeof(src));
hpibswait(ctlr, slave);
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
bzero(&ssmc, sizeof(ssmc));
ssmc.c_unit = C_SUNIT(punit);
ssmc.c_cmd = C_SSM;
ssmc.c_refm = REF_MASK;
ssmc.c_fefm = FEF_MASK;
ssmc.c_aefm = AEF_MASK;
ssmc.c_iefm = IEF_MASK;
hpibsend(ctlr, slave, C_CMD, &ssmc, sizeof(ssmc));
hpibswait(ctlr, slave);
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
}
/*
* Read or construct a disklabel
*/
void
hdgetdisklabel(dev, rs, lp, spoofonly)
dev_t dev;
struct hd_softc *rs;
struct disklabel *lp;
int spoofonly;
{
char *errstring;
bzero(lp, sizeof(struct disklabel));
/*
* Create a default disk label based on geometry.
* This will get overridden if there is a real label on the disk.
*/
lp->d_secsize = DEV_BSIZE;
lp->d_ntracks = hdidentinfo[rs->sc_type].ri_ntpc;
lp->d_nsectors = hdidentinfo[rs->sc_type].ri_nbpt;
lp->d_ncylinders = hdidentinfo[rs->sc_type].ri_ncyl;
lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
if (lp->d_secpercyl == 0) {
lp->d_secpercyl = 100;
/* as long as it's not 0 - readdisklabel divides by it */
}
lp->d_type = DTYPE_HPIB;
strncpy(lp->d_typename, hdidentinfo[rs->sc_type].ri_desc,
sizeof(lp->d_typename));
strncpy(lp->d_packname, "fictitious", sizeof lp->d_packname);
DL_SETDSIZE(lp, hdidentinfo[rs->sc_type].ri_nblocks);
lp->d_rpm = 3600;
lp->d_interleave = 1;
lp->d_flags = 0;
lp->d_version = 1;
/* XXX - these values for BBSIZE and SBSIZE assume ffs */
lp->d_bbsize = BBSIZE;
lp->d_sbsize = SBSIZE;
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
lp->d_checksum = dkcksum(lp);
/*
* Now try to read the disklabel
*/
errstring = readdisklabel(DISKLABELDEV(dev), hdstrategy, lp,
spoofonly);
if (errstring) {
/* printf("%s: %s\n", rs->sc_dev.dv_xname, errstring); */
return;
}
}
int
hdopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
int unit = DISKUNIT(dev);
struct hd_softc *rs;
int mask, part;
int error;
rs = hdlookup(unit);
if (rs == NULL)
return (ENXIO);
if ((error = hdlock(rs)) != 0) {
device_unref(&rs->sc_dev);
return (error);
}
/*
* On first open, get label and partition info.
* We may block reading the label, so be careful
* to stop any other opens.
*/
if (rs->sc_dkdev.dk_openmask == 0) {
rs->sc_flags |= HDF_OPENING;
hdgetdisklabel(dev, rs, rs->sc_dkdev.dk_label, 0);
rs->sc_flags &= ~HDF_OPENING;
}
part = DISKPART(dev);
mask = 1 << part;
/* Check that the partition exists. */
if (part != RAW_PART &&
(part > rs->sc_dkdev.dk_label->d_npartitions ||
rs->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) {
error = ENXIO;
goto out;
}
/* Ensure only one open at a time. */
switch (mode) {
case S_IFCHR:
rs->sc_dkdev.dk_copenmask |= mask;
break;
case S_IFBLK:
rs->sc_dkdev.dk_bopenmask |= mask;
break;
}
rs->sc_dkdev.dk_openmask =
rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask;
error = 0;
out:
hdunlock(rs);
device_unref(&rs->sc_dev);
return (error);
}
int
hdclose(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
int unit = DISKUNIT(dev);
struct hd_softc *rs;
struct disk *dk;
int mask, s;
int error;
rs = hdlookup(unit);
if (rs == NULL)
return (ENXIO);
if ((error = hdlock(rs)) != 0) {
device_unref(&rs->sc_dev);
return (error);
}
mask = 1 << DISKPART(dev);
dk = &rs->sc_dkdev;
switch (mode) {
case S_IFCHR:
dk->dk_copenmask &= ~mask;
break;
case S_IFBLK:
dk->dk_bopenmask &= ~mask;
break;
}
dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask;
/*
* On last close, we wait for all activity to cease since
* the label/parition info will become invalid.
* Note we don't have to about other closes since we know
* we are the last one.
*/
if (dk->dk_openmask == 0) {
rs->sc_flags |= HDF_CLOSING;
s = splbio();
while (rs->sc_tab.b_active) {
rs->sc_flags |= HDF_WANTED;
tsleep((caddr_t)&rs->sc_tab, PRIBIO, "hdclose", 0);
}
splx(s);
rs->sc_flags &= ~(HDF_CLOSING);
}
hdunlock(rs);
device_unref(&rs->sc_dev);
return (0);
}
void
hdstrategy(bp)
struct buf *bp;
{
int unit = DISKUNIT(bp->b_dev);
struct hd_softc *rs;
struct buf *dp;
struct disklabel *lp;
int s;
rs = hdlookup(unit);
if (rs == NULL) {
bp->b_error = ENXIO;
goto bad;
}
#ifdef DEBUG
if (hddebug & HDB_FOLLOW)
printf("hdstrategy(%x): dev %x, bn %x, bcount %lx, %c\n",
bp, bp->b_dev, bp->b_blkno, bp->b_bcount,
(bp->b_flags & B_READ) ? 'R' : 'W');
#endif
lp = rs->sc_dkdev.dk_label;
/*
* If it's a null transfer, return immediately
*/
if (bp->b_bcount == 0)
goto done;
/*
* The transfer must be a whole number of blocks.
*/
if ((bp->b_bcount % lp->d_secsize) != 0) {
bp->b_error = EINVAL;
goto bad;
}
/*
* Do bounds checking, adjust transfer. if error, process;
* If end of partition, just return.
*/
if (bounds_check_with_label(bp, lp,
(rs->sc_flags & HDF_WLABEL) != 0) <= 0)
goto done;
s = splbio();
dp = &rs->sc_tab;
disksort(dp, bp);
if (dp->b_active == 0) {
dp->b_active = 1;
hdustart(rs);
}
splx(s);
device_unref(&rs->sc_dev);
return;
bad:
bp->b_flags |= B_ERROR;
done:
/*
* Correctly set the buf to indicate a completed xfer
*/
bp->b_resid = bp->b_bcount;
s = splbio();
biodone(bp);
splx(s);
if (rs != NULL)
device_unref(&rs->sc_dev);
}
/*
* Called via timeout(9) when handling maintenance releases
*/
void
hdrestart(arg)
void *arg;
{
int s = splbio();
hdustart((struct hd_softc *)arg);
splx(s);
}
void
hdustart(rs)
struct hd_softc *rs;
{
struct buf *bp;
bp = rs->sc_tab.b_actf;
rs->sc_addr = bp->b_data;
rs->sc_resid = bp->b_bcount;
if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq))
hdstart(rs);
}
struct buf *
hdfinish(rs, bp)
struct hd_softc *rs;
struct buf *bp;
{
struct buf *dp = &rs->sc_tab;
int s;
rs->sc_errcnt = 0;
dp->b_actf = bp->b_actf;
bp->b_resid = 0;
s = splbio();
biodone(bp);
splx(s);
hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq);
if (dp->b_actf)
return (dp->b_actf);
dp->b_active = 0;
if (rs->sc_flags & HDF_WANTED) {
rs->sc_flags &= ~HDF_WANTED;
wakeup((caddr_t)dp);
}
return (NULL);
}
void
hdstart(arg)
void *arg;
{
struct hd_softc *rs = arg;
struct disklabel *lp;
struct buf *bp = rs->sc_tab.b_actf;
int ctlr, slave;
daddr64_t bn;
ctlr = rs->sc_dev.dv_parent->dv_unit;
slave = rs->sc_slave;
again:
#ifdef DEBUG
if (hddebug & HDB_FOLLOW)
printf("hdstart(%s): bp %p, %c\n", rs->sc_dev.dv_xname, bp,
(bp->b_flags & B_READ) ? 'R' : 'W');
#endif
lp = rs->sc_dkdev.dk_label;
bn = bp->b_blkno +
DL_GETPOFFSET(&lp->d_partitions[DISKPART(bp->b_dev)]);
rs->sc_flags |= HDF_SEEK;
rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit);
rs->sc_ioc.c_volume = C_SVOL(0);
rs->sc_ioc.c_saddr = C_SADDR;
rs->sc_ioc.c_hiaddr = 0;
rs->sc_ioc.c_addr = HDBTOS(bn);
rs->sc_ioc.c_nop2 = C_NOP;
rs->sc_ioc.c_slen = C_SLEN;
rs->sc_ioc.c_len = rs->sc_resid;
rs->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE;
#ifdef DEBUG
if (hddebug & HDB_IO)
printf("hdstart: hpibsend(%x, %x, %x, %p, %x)\n",
ctlr, slave, C_CMD,
&rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2);
#endif
if (hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit,
sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) {
/* Instrumentation. */
disk_busy(&rs->sc_dkdev);
rs->sc_dkdev.dk_seek++;
#ifdef DEBUG
if (hddebug & HDB_IO)
printf("hdstart: hpibawait(%x)\n", ctlr);
#endif
hpibawait(ctlr);
return;
}
/*
* Experience has shown that the hpibwait in this hpibsend will
* occasionally timeout. It appears to occur mostly on old 7914
* drives with full maintenance tracks. We should probably
* integrate this with the backoff code in hderror.
*/
#ifdef DEBUG
if (hddebug & HDB_ERROR)
printf("%s: hdstart: cmd %x adr %lx blk %d len %d ecnt %ld\n",
rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr,
bp->b_blkno, rs->sc_resid, rs->sc_errcnt);
rs->sc_stats.hdretries++;
#endif
rs->sc_flags &= ~HDF_SEEK;
hdreset(rs->sc_dev.dv_parent->dv_unit, rs->sc_slave, rs->sc_punit);
if (rs->sc_errcnt++ < HDRETRY)
goto again;
printf("%s: hdstart err: err: cmd 0x%x sect %ld blk %d len %d\n",
rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr,
bp->b_blkno, rs->sc_resid);
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
bp = hdfinish(rs, bp);
if (bp) {
rs->sc_addr = bp->b_data;
rs->sc_resid = bp->b_bcount;
if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq))
goto again;
}
}
void
hdgo(arg)
void *arg;
{
struct hd_softc *rs = arg;
struct buf *bp = rs->sc_tab.b_actf;
int rw, ctlr, slave;
ctlr = rs->sc_dev.dv_parent->dv_unit;
slave = rs->sc_slave;
rw = bp->b_flags & B_READ;
/* Instrumentation. */
disk_busy(&rs->sc_dkdev);
#ifdef USELEDS
ledcontrol(0, 0, LED_DISK);
#endif
hpibgo(ctlr, slave, C_EXEC, rs->sc_addr, rs->sc_resid, rw, rw != 0);
}
/* ARGSUSED */
void
hdinterrupt(arg)
void *arg;
{
struct hd_softc *rs = arg;
int unit = rs->sc_dev.dv_unit;
struct buf *bp = rs->sc_tab.b_actf;
u_char stat = 13; /* in case hpibrecv fails */
int rv, restart, ctlr, slave;
ctlr = rs->sc_dev.dv_parent->dv_unit;
slave = rs->sc_slave;
#ifdef DEBUG
if (hddebug & HDB_FOLLOW)
printf("hdinterrupt(%d): bp %p, %c, flags %x\n", unit, bp,
(bp->b_flags & B_READ) ? 'R' : 'W', rs->sc_flags);
if (bp == NULL) {
printf("%s: bp == NULL\n", rs->sc_dev.dv_xname);
return;
}
#endif
disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid),
(bp->b_flags & B_READ));
if (rs->sc_flags & HDF_SEEK) {
rs->sc_flags &= ~HDF_SEEK;
if (hpibustart(ctlr))
hdgo(rs);
return;
}
if ((rs->sc_flags & HDF_SWAIT) == 0) {
#ifdef DEBUG
rs->sc_stats.hdpolltries++;
#endif
if (hpibpptest(ctlr, slave) == 0) {
#ifdef DEBUG
rs->sc_stats.hdpollwaits++;
#endif
/* Instrumentation. */
disk_busy(&rs->sc_dkdev);
rs->sc_flags |= HDF_SWAIT;
hpibawait(ctlr);
return;
}
} else
rs->sc_flags &= ~HDF_SWAIT;
rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1);
if (rv != 1 || stat) {
#ifdef DEBUG
if (hddebug & HDB_ERROR)
printf("hdinterrupt: recv failed or bad stat %d\n", stat);
#endif
restart = hderror(unit);
#ifdef DEBUG
rs->sc_stats.hdretries++;
#endif
if (rs->sc_errcnt++ < HDRETRY) {
if (restart)
hdstart(rs);
return;
}
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
}
if (hdfinish(rs, bp))
hdustart(rs);
}
int
hdstatus(rs)
struct hd_softc *rs;
{
int c, s;
u_char stat;
int rv;
c = rs->sc_dev.dv_parent->dv_unit;
s = rs->sc_slave;
rs->sc_rsc.c_unit = C_SUNIT(rs->sc_punit);
rs->sc_rsc.c_sram = C_SRAM;
rs->sc_rsc.c_ram = C_RAM;
rs->sc_rsc.c_cmd = C_STATUS;
bzero((caddr_t)&rs->sc_stat, sizeof(rs->sc_stat));
rv = hpibsend(c, s, C_CMD, &rs->sc_rsc, sizeof(rs->sc_rsc));
if (rv != sizeof(rs->sc_rsc)) {
#ifdef DEBUG
if (hddebug & HDB_STATUS)
printf("hdstatus: send C_CMD failed %d != %d\n",
rv, sizeof(rs->sc_rsc));
#endif
return(1);
}
rv = hpibrecv(c, s, C_EXEC, &rs->sc_stat, sizeof(rs->sc_stat));
if (rv != sizeof(rs->sc_stat)) {
#ifdef DEBUG
if (hddebug & HDB_STATUS)
printf("hdstatus: send C_EXEC failed %d != %d\n",
rv, sizeof(rs->sc_stat));
#endif
return(1);
}
rv = hpibrecv(c, s, C_QSTAT, &stat, 1);
if (rv != 1 || stat) {
#ifdef DEBUG
if (hddebug & HDB_STATUS)
printf("hdstatus: recv failed %d or bad stat %d\n",
rv, stat);
#endif
return(1);
}
return(0);
}
/*
* Deal with errors.
* Returns 1 if request should be restarted,
* 0 if we should just quietly give up.
*/
int
hderror(unit)
int unit;
{
struct hd_softc *rs = hd_cd.cd_devs[unit];
struct hd_stat *sp;
struct buf *bp;
daddr64_t hwbn, pbn;
if (hdstatus(rs)) {
#ifdef DEBUG
printf("%s: couldn't get status\n", rs->sc_dev.dv_xname);
#endif
hdreset(rs->sc_dev.dv_parent->dv_unit,
rs->sc_slave, rs->sc_punit);
return(1);
}
sp = &rs->sc_stat;
if (sp->c_fef & FEF_REXMT)
return(1);
if (sp->c_fef & FEF_PF) {
hdreset(rs->sc_dev.dv_parent->dv_unit,
rs->sc_slave, rs->sc_punit);
return(1);
}
/*
* Unit requests release for internal maintenance.
* We just delay a while and try again later. Use exponentially
* increasing backoff a la ethernet drivers since we don't really
* know how long the maintenance will take. With HDWAITC and
* HDRETRY as defined, the range is 1 to 32 seconds.
*/
if (sp->c_fef & FEF_IMR) {
int hdtimo = HDWAITC << rs->sc_errcnt;
#ifdef DEBUG
printf("%s: internal maintenance, %d second timeout\n",
rs->sc_dev.dv_xname, hdtimo);
rs->sc_stats.hdtimeouts++;
#endif
hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq);
timeout_add(&rs->sc_timeout, hdtimo * hz);
return(0);
}
/*
* Only report error if we have reached the error reporting
* threshold. By default, this will only report after the
* retry limit has been exceeded.
*/
if (rs->sc_errcnt < hderrthresh)
return(1);
/*
* First conjure up the block number at which the error occurred.
* Note that not all errors report a block number, in that case
* we just use b_blkno.
*/
bp = rs->sc_tab.b_actf;
pbn = DL_GETPOFFSET(&rs->sc_dkdev.dk_label->d_partitions[DISKPART(bp->b_dev)]);
if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) ||
(sp->c_ief & IEF_RRMASK)) {
hwbn = HDBTOS(pbn + bp->b_blkno);
pbn = bp->b_blkno;
} else {
hwbn = sp->c_blk;
pbn = HDSTOB(hwbn) - pbn;
}
diskerr(bp, hd_cd.cd_name, "hard error", LOG_PRINTF,
pbn - bp->b_blkno, rs->sc_dkdev.dk_label);
printf("\n%s%c: ", rs->sc_dev.dv_xname, 'a' + DISKPART(bp->b_dev));
#ifdef DEBUG
if (hddebug & HDB_ERROR) {
/* status info */
printf("volume: %d, unit: %d\n",
(sp->c_vu>>4)&0xF, sp->c_vu&0xF);
hdprinterr("reject", sp->c_ref, err_reject);
hdprinterr("fault", sp->c_fef, err_fault);
hdprinterr("access", sp->c_aef, err_access);
hdprinterr("info", sp->c_ief, err_info);
printf(" block: %d, P1-P10: ", hwbn);
printf("0x%04x", *(u_int *)&sp->c_raw[0]);
printf("%04x", *(u_int *)&sp->c_raw[4]);
printf("%02x\n", *(u_short *)&sp->c_raw[8]);
/* command */
printf(" ioc: ");
printf("0x%x", *(u_int *)&rs->sc_ioc.c_pad);
printf("0x%x", *(u_short *)&rs->sc_ioc.c_hiaddr);
printf("0x%x", *(u_int *)&rs->sc_ioc.c_addr);
printf("0x%x", *(u_short *)&rs->sc_ioc.c_nop2);
printf("0x%x", *(u_int *)&rs->sc_ioc.c_len);
printf("0x%x\n", *(u_short *)&rs->sc_ioc.c_cmd);
} else
#endif
{
printf("v%d u%d, R0x%x F0x%x A0x%x I0x%x",
(sp->c_vu>>4)&0xF, sp->c_vu&0xF,
sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief);
printf(" P1-P10: 0x%04x%04x%02x\n",
*(u_int *)&sp->c_raw[0], *(u_int *)&sp->c_raw[4],
*(u_short *)&sp->c_raw[8]);
}
return (1);
}
int
hdread(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
return (physio(hdstrategy, NULL, dev, B_READ, minphys, uio));
}
int
hdwrite(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
return (physio(hdstrategy, NULL, dev, B_WRITE, minphys, uio));
}
int
hdioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
int unit = DISKUNIT(dev);
struct hd_softc *sc;
int error = 0;
sc = hdlookup(unit);
if (sc == NULL)
return (ENXIO);
switch (cmd) {
case DIOCGPDINFO:
hdgetdisklabel(dev, sc, (struct disklabel *)data, 1);
goto exit;
case DIOCGDINFO:
*(struct disklabel *)data = *sc->sc_dkdev.dk_label;
goto exit;
case DIOCGPART:
((struct partinfo *)data)->disklab = sc->sc_dkdev.dk_label;
((struct partinfo *)data)->part =
&sc->sc_dkdev.dk_label->d_partitions[DISKPART(dev)];
goto exit;
case DIOCWLABEL:
if ((flag & FWRITE) == 0) {
error = EBADF;
goto exit;
}
if (*(int *)data)
sc->sc_flags |= HDF_WLABEL;
else
sc->sc_flags &= ~HDF_WLABEL;
goto exit;
case DIOCWDINFO:
case DIOCSDINFO:
if ((flag & FWRITE) == 0) {
error = EBADF;
goto exit;
}
if ((error = hdlock(sc)) != 0)
goto exit;
sc->sc_flags |= HDF_WLABEL;
error = setdisklabel(sc->sc_dkdev.dk_label,
(struct disklabel *)data, /* sc->sc_dkdev.dk_openmask */ 0);
if (error == 0) {
if (cmd == DIOCWDINFO)
error = writedisklabel(DISKLABELDEV(dev),
hdstrategy, sc->sc_dkdev.dk_label);
}
sc->sc_flags &= ~HDF_WLABEL;
hdunlock(sc);
goto exit;
default:
error = EINVAL;
break;
}
exit:
device_unref(&sc->sc_dev);
return (error);
}
daddr64_t
hdsize(dev)
dev_t dev;
{
struct hd_softc *rs;
int unit = DISKUNIT(dev);
int part, omask;
int size;
rs = hdlookup(unit);
if (rs == NULL)
return (-1);
part = DISKPART(dev);
omask = rs->sc_dkdev.dk_openmask & (1 << part);
/*
* We get called very early on (via swapconf)
* without the device being open so we may need
* to handle it here.
*/
if (omask == 0 && hdopen(dev, FREAD | FWRITE, S_IFBLK, NULL) != 0) {
size = -1;
goto out;
}
if (rs->sc_dkdev.dk_label->d_partitions[part].p_fstype != FS_SWAP)
size = -1;
else
size = DL_GETPSIZE(&rs->sc_dkdev.dk_label->d_partitions[part]) *
(rs->sc_dkdev.dk_label->d_secsize / DEV_BSIZE);
if (hdclose(dev, FREAD | FWRITE, S_IFBLK, NULL) != 0)
size = -1;
out:
device_unref(&rs->sc_dev);
return (size);
}
#ifdef DEBUG
void
hdprinterr(str, err, tab)
const char *str;
short err;
const char **tab;
{
int i;
int printed;
if (err == 0)
return;
printf(" %s error %d field:", str, err);
printed = 0;
for (i = 0; i < 16; i++)
if (err & (0x8000 >> i))
printf("%s%s", printed++ ? " + " : " ", tab[i]);
printf("\n");
}
#endif
static int hddoingadump; /* simple mutex */
/*
* Non-interrupt driven, non-dma dump routine.
*/
int
hddump(dev, blkno, va, size)
dev_t dev;
daddr64_t blkno;
caddr_t va;
size_t size;
{
int sectorsize; /* size of a disk sector */
daddr64_t nsects; /* number of sectors in partition */
daddr64_t sectoff; /* sector offset of partition */
int totwrt; /* total number of sectors left to write */
int nwrt; /* current number of sectors to write */
int unit, part;
int ctlr, slave;
struct hd_softc *rs;
struct disklabel *lp;
char stat;
/* Check for recursive dump; if so, punt. */
if (hddoingadump)
return (EFAULT);
hddoingadump = 1;
/* Decompose unit and partition. */
unit = DISKUNIT(dev);
part = DISKPART(dev);
/* Make sure dump device is ok. */
rs = hdlookup(unit);
if (rs == NULL)
return (ENXIO);
device_unref(&rs->sc_dev);
ctlr = rs->sc_dev.dv_parent->dv_unit;
slave = rs->sc_slave;
/*
* Convert to disk sectors. Request must be a multiple of size.
*/
lp = rs->sc_dkdev.dk_label;
sectorsize = lp->d_secsize;
if ((size % sectorsize) != 0)
return (EFAULT);
totwrt = size / sectorsize;
blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */
nsects = DL_GETPSIZE(&lp->d_partitions[part]);
sectoff = DL_GETPOFFSET(&lp->d_partitions[part]);
/* Check transfer bounds against partition size. */
if ((blkno < 0) || (blkno + totwrt) > nsects)
return (EINVAL);
/* Offset block number to start of partition. */
blkno += sectoff;
while (totwrt > 0) {
nwrt = totwrt; /* XXX */
#ifndef HD_DUMP_NOT_TRUSTED
/*
* Fill out and send HPIB command.
*/
rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit);
rs->sc_ioc.c_volume = C_SVOL(0);
rs->sc_ioc.c_saddr = C_SADDR;
rs->sc_ioc.c_hiaddr = 0;
rs->sc_ioc.c_addr = HDBTOS(blkno);
rs->sc_ioc.c_nop2 = C_NOP;
rs->sc_ioc.c_slen = C_SLEN;
rs->sc_ioc.c_len = nwrt * sectorsize;
rs->sc_ioc.c_cmd = C_WRITE;
hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit,
sizeof(rs->sc_ioc)-2);
if (hpibswait(ctlr, slave))
return (EIO);
/*
* Send the data.
*/
hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize);
(void) hpibswait(ctlr, slave);
hpibrecv(ctlr, slave, C_QSTAT, &stat, 1);
if (stat)
return (EIO);
#else /* HD_DUMP_NOT_TRUSTED */
/* Let's just talk about this first... */
printf("%s: dump addr %p, blk %d\n", sc->sc_dev.dv_xname,
va, blkno);
delay(500 * 1000); /* half a second */
#endif /* HD_DUMP_NOT_TRUSTED */
/* update block count */
totwrt -= nwrt;
blkno += nwrt;
va += sectorsize * nwrt;
}
hddoingadump = 0;
return (0);
}
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