NetBSD-5.0.2/sys/arch/hp300/dev/rd.c
/* $NetBSD: rd.c,v 1.88 2008/06/17 21:08:08 he Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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
*/
/*
* Copyright (c) 1988 University of Utah.
*
* 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. 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 $Hdr: rd.c 1.44 92/12/26$
*
* @(#)rd.c 8.2 (Berkeley) 5/19/94
*/
/*
* CS80/SS80 disk driver
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: rd.c,v 1.88 2008/06/17 21:08:08 he Exp $");
#include "opt_useleds.h"
#include "rnd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/bufq.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/proc.h>
#include <sys/stat.h>
#if NRND > 0
#include <sys/rnd.h>
#endif
#include <hp300/dev/hpibvar.h>
#include <hp300/dev/rdreg.h>
#include <hp300/dev/rdvar.h>
#ifdef USELEDS
#include <hp300/hp300/leds.h>
#endif
#include "ioconf.h"
int rderrthresh = RDRETRY-1; /* when to start reporting errors */
#ifdef DEBUG
/* error message tables */
static const char *err_reject[] = {
0, 0,
"channel parity error", /* 0x2000 */
0, 0,
"illegal opcode", /* 0x0400 */
"module addressing", /* 0x0200 */
"address bounds", /* 0x0100 */
"parameter bounds", /* 0x0080 */
"illegal parameter", /* 0x0040 */
"message sequence", /* 0x0020 */
0,
"message length", /* 0x0008 */
0, 0, 0
};
static const char *err_fault[] = {
0,
"cross unit", /* 0x4000 */
0,
"controller fault", /* 0x1000 */
0, 0,
"unit fault", /* 0x0200 */
0,
"diagnostic result", /* 0x0080 */
0,
"operator release request", /* 0x0020 */
"diagnostic release request", /* 0x0010 */
"internal maintenance release request", /* 0x0008 */
0,
"power fail", /* 0x0002 */
"retransmit" /* 0x0001 */
};
static const char *err_access[] = {
"illegal parallel operation", /* 0x8000 */
"uninitialized media", /* 0x4000 */
"no spares available", /* 0x2000 */
"not ready", /* 0x1000 */
"write protect", /* 0x0800 */
"no data found", /* 0x0400 */
0, 0,
"unrecoverable data overflow", /* 0x0080 */
"unrecoverable data", /* 0x0040 */
0,
"end of file", /* 0x0010 */
"end of volume", /* 0x0008 */
0, 0, 0
};
static const char *err_info[] = {
"operator release request", /* 0x8000 */
"diagnostic release request", /* 0x4000 */
"internal maintenance release request", /* 0x2000 */
"media wear", /* 0x1000 */
"latency induced", /* 0x0800 */
0, 0,
"auto sparing invoked", /* 0x0100 */
0,
"recoverable data overflow", /* 0x0040 */
"marginal data", /* 0x0020 */
"recoverable data", /* 0x0010 */
0,
"maintenance track overflow", /* 0x0004 */
0, 0
};
int rddebug = 0x80;
#define RDB_FOLLOW 0x01
#define RDB_STATUS 0x02
#define RDB_IDENT 0x04
#define RDB_IO 0x08
#define RDB_ASYNC 0x10
#define RDB_ERROR 0x80
#endif
/*
* Misc. HW description, indexed by sc_type.
* Nothing really critical here, could do without it.
*/
static const struct rdidentinfo rdidentinfo[] = {
{ RD7946AID, 0, "7945A", NRD7945ABPT,
NRD7945ATRK, 968, 108416 },
{ RD9134DID, 1, "9134D", NRD9134DBPT,
NRD9134DTRK, 303, 29088 },
{ RD9134LID, 1, "9122S", NRD9122SBPT,
NRD9122STRK, 77, 1232 },
{ RD7912PID, 0, "7912P", NRD7912PBPT,
NRD7912PTRK, 572, 128128 },
{ RD7914PID, 0, "7914P", NRD7914PBPT,
NRD7914PTRK, 1152, 258048 },
{ RD7958AID, 0, "7958A", NRD7958ABPT,
NRD7958ATRK, 1013, 255276 },
{ RD7957AID, 0, "7957A", NRD7957ABPT,
NRD7957ATRK, 1036, 159544 },
{ RD7933HID, 0, "7933H", NRD7933HBPT,
NRD7933HTRK, 1321, 789958 },
{ RD9134LID, 1, "9134L", NRD9134LBPT,
NRD9134LTRK, 973, 77840 },
{ RD7936HID, 0, "7936H", NRD7936HBPT,
NRD7936HTRK, 698, 600978 },
{ RD7937HID, 0, "7937H", NRD7937HBPT,
NRD7937HTRK, 698, 1116102 },
{ RD7914CTID, 0, "7914CT", NRD7914PBPT,
NRD7914PTRK, 1152, 258048 },
{ RD7946AID, 0, "7946A", NRD7945ABPT,
NRD7945ATRK, 968, 108416 },
{ RD9134LID, 1, "9122D", NRD9122SBPT,
NRD9122STRK, 77, 1232 },
{ RD7957BID, 0, "7957B", NRD7957BBPT,
NRD7957BTRK, 1269, 159894 },
{ RD7958BID, 0, "7958B", NRD7958BBPT,
NRD7958BTRK, 786, 297108 },
{ RD7959BID, 0, "7959B", NRD7959BBPT,
NRD7959BTRK, 1572, 594216 },
{ RD2200AID, 0, "2200A", NRD2200ABPT,
NRD2200ATRK, 1449, 654948 },
{ RD2203AID, 0, "2203A", NRD2203ABPT,
NRD2203ATRK, 1449, 1309896 }
};
static const int numrdidentinfo = __arraycount(rdidentinfo);
static int rdident(struct device *, struct rd_softc *,
struct hpibbus_attach_args *);
static void rdreset(struct rd_softc *);
static void rdustart(struct rd_softc *);
static int rdgetinfo(dev_t);
static void rdrestart(void *);
static struct buf *rdfinish(struct rd_softc *, struct buf *);
static void rdgetdefaultlabel(struct rd_softc *, struct disklabel *);
static void rdrestart(void *);
static void rdustart(struct rd_softc *);
static struct buf *rdfinish(struct rd_softc *, struct buf *);
static void rdstart(void *);
static void rdgo(void *);
static void rdintr(void *);
static int rdstatus(struct rd_softc *);
static int rderror(int);
#ifdef DEBUG
static void rdprinterr(const char *, short, const char **);
#endif
static int rdmatch(device_t, cfdata_t, void *);
static void rdattach(device_t, device_t, void *);
CFATTACH_DECL_NEW(rd, sizeof(struct rd_softc),
rdmatch, rdattach, NULL, NULL);
static dev_type_open(rdopen);
static dev_type_close(rdclose);
static dev_type_read(rdread);
static dev_type_write(rdwrite);
static dev_type_ioctl(rdioctl);
static dev_type_strategy(rdstrategy);
static dev_type_dump(rddump);
static dev_type_size(rdsize);
const struct bdevsw rd_bdevsw = {
rdopen, rdclose, rdstrategy, rdioctl, rddump, rdsize, D_DISK
};
const struct cdevsw rd_cdevsw = {
rdopen, rdclose, rdread, rdwrite, rdioctl,
nostop, notty, nopoll, nommap, nokqfilter, D_DISK
};
static int
rdmatch(device_t parent, cfdata_t cf, void *aux)
{
struct hpibbus_attach_args *ha = aux;
/*
* Set punit if operator specified one in the kernel
* configuration file.
*/
if (cf->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT &&
cf->hpibbuscf_punit < HPIB_NPUNITS)
ha->ha_punit = cf->hpibbuscf_punit;
if (rdident(parent, NULL, ha) == 0) {
/*
* XXX Some aging HP-IB drives are slow to
* XXX respond; give them a chance to catch
* XXX up and probe them again.
*/
delay(10000);
ha->ha_id = hpibid(device_unit(parent), ha->ha_slave);
return rdident(parent, NULL, ha);
}
return 1;
}
static void
rdattach(device_t parent, device_t self, void *aux)
{
struct rd_softc *sc = device_private(self);
struct hpibbus_attach_args *ha = aux;
sc->sc_dev = self;
bufq_alloc(&sc->sc_tab, "disksort", BUFQ_SORT_RAWBLOCK);
if (rdident(parent, sc, ha) == 0) {
aprint_error(": didn't respond to describe command!\n");
return;
}
/*
* Initialize and attach the disk structure.
*/
memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev));
disk_init(&sc->sc_dkdev, device_xname(sc->sc_dev), NULL);
disk_attach(&sc->sc_dkdev);
sc->sc_slave = ha->ha_slave;
sc->sc_punit = ha->ha_punit;
callout_init(&sc->sc_restart_ch, 0);
/* 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 = rdstart;
sc->sc_hq.hq_go = rdgo;
sc->sc_hq.hq_intr = rdintr;
sc->sc_flags = RDF_ALIVE;
#ifdef DEBUG
/* always report errors */
if (rddebug & RDB_ERROR)
rderrthresh = 0;
#endif
#if NRND > 0
/*
* attach the device into the random source list
*/
rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev),
RND_TYPE_DISK, 0);
#endif
}
static int
rdident(device_t parent, struct rd_softc *sc, struct hpibbus_attach_args *ha)
{
struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL;
u_char stat, cmd[3];
char name[7];
int i, id, n, ctlr, slave;
ctlr = device_unit(parent);
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 < numrdidentinfo; id++)
if (ha->ha_id == rdidentinfo[id].ri_hwid)
break;
if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum)
return 0;
/*
* If we're just probing for the device, that's all the
* work we need to do.
*/
if (sc == NULL)
return 1;
/*
* Reset device and collect description
*/
rdreset(sc);
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, 37);
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
memset(name, 0, sizeof(name));
if (stat == 0) {
n = desc->d_name;
for (i = 5; i >= 0; i--) {
name[i] = (n & 0xf) + '0';
n >>= 4;
}
}
#ifdef DEBUG
if (rddebug & RDB_IDENT) {
aprint_debug("\n");
aprint_debug_dev(sc->sc_dev, "name: %x ('%s')\n",
desc->d_name, name);
aprint_debug(" iuw %x, maxxfr %d, ctype %d\n",
desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype);
aprint_debug(" 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);
aprint_debug(" 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);
aprint_debug(" 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);
aprint_normal("%s", device_xname(sc->sc_dev));
}
#endif
/*
* Take care of a couple of anomolies:
* 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 RD7946AID:
if (memcmp(name, "079450", 6) == 0)
id = RD7945A;
else
id = RD7946A;
break;
case RD9134LID:
if (memcmp(name, "091340", 6) == 0)
id = RD9134L;
else
id = RD9122D;
break;
case RD9134DID:
if (memcmp(name, "091220", 6) == 0)
id = RD9122S;
else
id = RD9134D;
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!
*/
aprint_normal(": %s\n", rdidentinfo[id].ri_desc);
aprint_normal_dev(sc->sc_dev, "%d cylinders, %d heads, %d blocks,"
" %d bytes/block\n",
rdidentinfo[id].ri_ncyl,
rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks,
DEV_BSIZE);
return 1;
}
static void
rdreset(struct rd_softc *sc)
{
int ctlr = device_unit(device_parent(sc->sc_dev));
int slave = sc->sc_slave;
u_char stat;
sc->sc_clear.c_unit = C_SUNIT(sc->sc_punit);
sc->sc_clear.c_cmd = C_CLEAR;
hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear));
hpibswait(ctlr, slave);
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
sc->sc_src.c_unit = C_SUNIT(RDCTLR);
sc->sc_src.c_nop = C_NOP;
sc->sc_src.c_cmd = C_SREL;
sc->sc_src.c_param = C_REL;
hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src));
hpibswait(ctlr, slave);
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
sc->sc_ssmc.c_unit = C_SUNIT(sc->sc_punit);
sc->sc_ssmc.c_cmd = C_SSM;
sc->sc_ssmc.c_refm = REF_MASK;
sc->sc_ssmc.c_fefm = FEF_MASK;
sc->sc_ssmc.c_aefm = AEF_MASK;
sc->sc_ssmc.c_iefm = IEF_MASK;
hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc));
hpibswait(ctlr, slave);
hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
#ifdef DEBUG
sc->sc_stats.rdresets++;
#endif
}
/*
* Read or construct a disklabel
*/
static int
rdgetinfo(dev_t dev)
{
struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev));
struct disklabel *lp = sc->sc_dkdev.dk_label;
struct partition *pi;
const char *msg;
/*
* Set some default values to use while reading the label
* or to use if there isn't a label.
*/
memset((void *)lp, 0, sizeof *lp);
rdgetdefaultlabel(sc, lp);
/*
* Now try to read the disklabel
*/
msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL);
if (msg == NULL)
return 0;
pi = lp->d_partitions;
printf("%s: WARNING: %s\n", device_xname(sc->sc_dev), msg);
pi[2].p_size = rdidentinfo[sc->sc_type].ri_nblocks;
/* XXX reset other info since readdisklabel screws with it */
lp->d_npartitions = 3;
pi[0].p_size = 0;
return 0;
}
static int
rdopen(dev_t dev, int flags, int mode, struct lwp *l)
{
struct rd_softc *sc;
int error, mask, part;
sc = device_lookup_private(&rd_cd, rdunit(dev));
if (sc == NULL)
return ENXIO;
if ((sc->sc_flags & RDF_ALIVE) == 0)
return ENXIO;
/*
* Wait for any pending opens/closes to complete
*/
while (sc->sc_flags & (RDF_OPENING|RDF_CLOSING))
(void) tsleep(sc, PRIBIO, "rdopen", 0);
/*
* On first open, get label and partition info.
* We may block reading the label, so be careful
* to stop any other opens.
*/
if (sc->sc_dkdev.dk_openmask == 0) {
sc->sc_flags |= RDF_OPENING;
error = rdgetinfo(dev);
sc->sc_flags &= ~RDF_OPENING;
wakeup((void *)sc);
if (error)
return error;
}
part = rdpart(dev);
mask = 1 << part;
/* Check that the partition exists. */
if (part != RAW_PART &&
(part > sc->sc_dkdev.dk_label->d_npartitions ||
sc->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED))
return ENXIO;
/* Ensure only one open at a time. */
switch (mode) {
case S_IFCHR:
sc->sc_dkdev.dk_copenmask |= mask;
break;
case S_IFBLK:
sc->sc_dkdev.dk_bopenmask |= mask;
break;
}
sc->sc_dkdev.dk_openmask =
sc->sc_dkdev.dk_copenmask | sc->sc_dkdev.dk_bopenmask;
return 0;
}
static int
rdclose(dev_t dev, int flag, int mode, struct lwp *l)
{
struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev));
struct disk *dk = &sc->sc_dkdev;
int mask, s;
mask = 1 << rdpart(dev);
if (mode == S_IFCHR)
dk->dk_copenmask &= ~mask;
else
dk->dk_bopenmask &= ~mask;
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. Since we
* might sleep, we must block any opens while we are here.
* Note we don't have to about other closes since we know
* we are the last one.
*/
if (dk->dk_openmask == 0) {
sc->sc_flags |= RDF_CLOSING;
s = splbio();
while (sc->sc_active) {
sc->sc_flags |= RDF_WANTED;
(void) tsleep(&sc->sc_tab, PRIBIO, "rdclose", 0);
}
splx(s);
sc->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL);
wakeup((void *)sc);
}
return 0;
}
static void
rdstrategy(struct buf *bp)
{
struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(bp->b_dev));
struct partition *pinfo;
daddr_t bn;
int sz, s;
int offset;
#ifdef DEBUG
if (rddebug & RDB_FOLLOW)
printf("rdstrategy(%p): dev %x, bn %llx, bcount %x, %c\n",
bp, bp->b_dev, bp->b_blkno, bp->b_bcount,
(bp->b_flags & B_READ) ? 'R' : 'W');
#endif
bn = bp->b_blkno;
sz = howmany(bp->b_bcount, DEV_BSIZE);
pinfo = &sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)];
/* Don't perform partition translation on RAW_PART. */
offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset;
if (rdpart(bp->b_dev) != RAW_PART) {
/*
* XXX This block of code belongs in
* XXX bounds_check_with_label()
*/
if (bn < 0 || bn + sz > pinfo->p_size) {
sz = pinfo->p_size - bn;
if (sz == 0) {
bp->b_resid = bp->b_bcount;
goto done;
}
if (sz < 0) {
bp->b_error = EINVAL;
goto done;
}
bp->b_bcount = dbtob(sz);
}
/*
* Check for write to write protected label
*/
if (bn + offset <= LABELSECTOR &&
#if LABELSECTOR != 0
bn + offset + sz > LABELSECTOR &&
#endif
!(bp->b_flags & B_READ) && !(sc->sc_flags & RDF_WLABEL)) {
bp->b_error = EROFS;
goto done;
}
}
bp->b_rawblkno = bn + offset;
s = splbio();
BUFQ_PUT(sc->sc_tab, bp);
if (sc->sc_active == 0) {
sc->sc_active = 1;
rdustart(sc);
}
splx(s);
return;
done:
biodone(bp);
}
/*
* Called from timeout() when handling maintenance releases
*/
static void
rdrestart(void *arg)
{
int s = splbio();
rdustart((struct rd_softc *)arg);
splx(s);
}
static void
rdustart(struct rd_softc *sc)
{
struct buf *bp;
bp = BUFQ_PEEK(sc->sc_tab);
sc->sc_addr = bp->b_data;
sc->sc_resid = bp->b_bcount;
if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq))
rdstart(sc);
}
static struct buf *
rdfinish(struct rd_softc *sc, struct buf *bp)
{
sc->sc_errcnt = 0;
(void)BUFQ_GET(sc->sc_tab);
bp->b_resid = 0;
biodone(bp);
hpibfree(device_parent(sc->sc_dev), &sc->sc_hq);
if ((bp = BUFQ_PEEK(sc->sc_tab)) != NULL)
return bp;
sc->sc_active = 0;
if (sc->sc_flags & RDF_WANTED) {
sc->sc_flags &= ~RDF_WANTED;
wakeup((void *)&sc->sc_tab);
}
return NULL;
}
static void
rdstart(void *arg)
{
struct rd_softc *sc = arg;
struct buf *bp = BUFQ_PEEK(sc->sc_tab);
int part, ctlr, slave;
ctlr = device_unit(device_parent(sc->sc_dev));
slave = sc->sc_slave;
again:
#ifdef DEBUG
if (rddebug & RDB_FOLLOW)
printf("rdstart(%s): bp %p, %c\n", device_xname(sc->sc_dev), bp,
(bp->b_flags & B_READ) ? 'R' : 'W');
#endif
part = rdpart(bp->b_dev);
sc->sc_flags |= RDF_SEEK;
sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit);
sc->sc_ioc.c_volume = C_SVOL(0);
sc->sc_ioc.c_saddr = C_SADDR;
sc->sc_ioc.c_hiaddr = 0;
sc->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno);
sc->sc_ioc.c_nop2 = C_NOP;
sc->sc_ioc.c_slen = C_SLEN;
sc->sc_ioc.c_len = sc->sc_resid;
sc->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE;
#ifdef DEBUG
if (rddebug & RDB_IO)
printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n",
ctlr, slave, C_CMD,
&sc->sc_ioc.c_unit, sizeof(sc->sc_ioc) - 2);
#endif
if (hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit,
sizeof(sc->sc_ioc) - 2) == sizeof(sc->sc_ioc) - 2) {
/* Instrumentation. */
disk_busy(&sc->sc_dkdev);
iostat_seek(sc->sc_dkdev.dk_stats);
#ifdef DEBUG
if (rddebug & RDB_IO)
printf("rdstart: 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 rderror.
*/
#ifdef DEBUG
if (rddebug & RDB_ERROR)
printf("%s: rdstart: cmd %x adr %lx blk %lld len %d ecnt %d\n",
device_xname(sc->sc_dev),
sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr,
bp->b_blkno, sc->sc_resid, sc->sc_errcnt);
sc->sc_stats.rdretries++;
#endif
sc->sc_flags &= ~RDF_SEEK;
rdreset(sc);
if (sc->sc_errcnt++ < RDRETRY)
goto again;
printf("%s: rdstart err: cmd 0x%x sect %ld blk %" PRId64 " len %d\n",
device_xname(sc->sc_dev), sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr,
bp->b_blkno, sc->sc_resid);
bp->b_error = EIO;
bp = rdfinish(sc, bp);
if (bp) {
sc->sc_addr = bp->b_data;
sc->sc_resid = bp->b_bcount;
if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq))
goto again;
}
}
static void
rdgo(void *arg)
{
struct rd_softc *sc = arg;
struct buf *bp = BUFQ_PEEK(sc->sc_tab);
int rw, ctlr, slave;
ctlr = device_unit(device_parent(sc->sc_dev));
slave = sc->sc_slave;
rw = bp->b_flags & B_READ;
/* Instrumentation. */
disk_busy(&sc->sc_dkdev);
#ifdef USELEDS
ledcontrol(0, 0, LED_DISK);
#endif
hpibgo(ctlr, slave, C_EXEC, sc->sc_addr, sc->sc_resid, rw, rw != 0);
}
/* ARGSUSED */
static void
rdintr(void *arg)
{
struct rd_softc *sc = arg;
int unit = device_unit(sc->sc_dev);
struct buf *bp = BUFQ_PEEK(sc->sc_tab);
u_char stat = 13; /* in case hpibrecv fails */
int rv, restart, ctlr, slave;
ctlr = device_unit(device_parent(sc->sc_dev));
slave = sc->sc_slave;
#ifdef DEBUG
if (rddebug & RDB_FOLLOW)
printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp,
(bp->b_flags & B_READ) ? 'R' : 'W', sc->sc_flags);
if (bp == NULL) {
printf("%s: bp == NULL\n", device_xname(sc->sc_dev));
return;
}
#endif
disk_unbusy(&sc->sc_dkdev, (bp->b_bcount - bp->b_resid),
(bp->b_flags & B_READ));
if (sc->sc_flags & RDF_SEEK) {
sc->sc_flags &= ~RDF_SEEK;
if (hpibustart(ctlr))
rdgo(sc);
return;
}
if ((sc->sc_flags & RDF_SWAIT) == 0) {
#ifdef DEBUG
sc->sc_stats.rdpolltries++;
#endif
if (hpibpptest(ctlr, slave) == 0) {
#ifdef DEBUG
sc->sc_stats.rdpollwaits++;
#endif
/* Instrumentation. */
disk_busy(&sc->sc_dkdev);
sc->sc_flags |= RDF_SWAIT;
hpibawait(ctlr);
return;
}
} else
sc->sc_flags &= ~RDF_SWAIT;
rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1);
if (rv != 1 || stat) {
#ifdef DEBUG
if (rddebug & RDB_ERROR)
printf("rdintr: recv failed or bad stat %d\n", stat);
#endif
restart = rderror(unit);
#ifdef DEBUG
sc->sc_stats.rdretries++;
#endif
if (sc->sc_errcnt++ < RDRETRY) {
if (restart)
rdstart(sc);
return;
}
bp->b_error = EIO;
}
if (rdfinish(sc, bp))
rdustart(sc);
#if NRND > 0
rnd_add_uint32(&sc->rnd_source, bp->b_blkno);
#endif
}
static int
rdstatus(struct rd_softc *sc)
{
int c, s;
u_char stat;
int rv;
c = device_unit(device_parent(sc->sc_dev));
s = sc->sc_slave;
sc->sc_rsc.c_unit = C_SUNIT(sc->sc_punit);
sc->sc_rsc.c_sram = C_SRAM;
sc->sc_rsc.c_ram = C_RAM;
sc->sc_rsc.c_cmd = C_STATUS;
memset((void *)&sc->sc_stat, 0, sizeof(sc->sc_stat));
rv = hpibsend(c, s, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc));
if (rv != sizeof(sc->sc_rsc)) {
#ifdef DEBUG
if (rddebug & RDB_STATUS)
printf("rdstatus: send C_CMD failed %d != %d\n",
rv, sizeof(sc->sc_rsc));
#endif
return 1;
}
rv = hpibrecv(c, s, C_EXEC, &sc->sc_stat, sizeof(sc->sc_stat));
if (rv != sizeof(sc->sc_stat)) {
#ifdef DEBUG
if (rddebug & RDB_STATUS)
printf("rdstatus: send C_EXEC failed %d != %d\n",
rv, sizeof(sc->sc_stat));
#endif
return 1;
}
rv = hpibrecv(c, s, C_QSTAT, &stat, 1);
if (rv != 1 || stat) {
#ifdef DEBUG
if (rddebug & RDB_STATUS)
printf("rdstatus: 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.
*/
static int
rderror(int unit)
{
struct rd_softc *sc = device_lookup_private(&rd_cd,unit);
struct rd_stat *sp;
struct buf *bp;
daddr_t hwbn, pbn;
char *hexstr(int, int); /* XXX */
if (rdstatus(sc)) {
#ifdef DEBUG
printf("%s: couldn't get status\n", device_xname(sc->sc_dev));
#endif
rdreset(sc);
return 1;
}
sp = &sc->sc_stat;
if (sp->c_fef & FEF_REXMT)
return 1;
if (sp->c_fef & FEF_PF) {
rdreset(sc);
return 1;
}
/*
* Unit requests release for internal maintenance.
* We just delay awhile and try again later. Use expontially
* increasing backoff ala ethernet drivers since we don't really
* know how long the maintenance will take. With RDWAITC and
* RDRETRY as defined, the range is 1 to 32 seconds.
*/
if (sp->c_fef & FEF_IMR) {
extern int hz;
int rdtimo = RDWAITC << sc->sc_errcnt;
#ifdef DEBUG
printf("%s: internal maintenance, %d second timeout\n",
device_xname(sc->sc_dev), rdtimo);
sc->sc_stats.rdtimeouts++;
#endif
hpibfree(device_parent(sc->sc_dev), &sc->sc_hq);
callout_reset(&sc->sc_restart_ch, rdtimo * hz, rdrestart, sc);
return 0;
}
/*
* Only report error if we have reached the error reporting
* threshhold. By default, this will only report after the
* retry limit has been exceeded.
*/
if (sc->sc_errcnt < rderrthresh)
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 = BUFQ_PEEK(sc->sc_tab);
pbn = sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset;
if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) ||
(sp->c_ief & IEF_RRMASK)) {
hwbn = RDBTOS(pbn + bp->b_blkno);
pbn = bp->b_blkno;
} else {
hwbn = sp->c_blk;
pbn = RDSTOB(hwbn) - pbn;
}
/*
* Now output a generic message suitable for badsect.
* Note that we don't use harderr cuz it just prints
* out b_blkno which is just the beginning block number
* of the transfer, not necessary where the error occurred.
*/
printf("%s%c: hard error sn%" PRId64 "\n", device_xname(sc->sc_dev),
'a'+rdpart(bp->b_dev), pbn);
/*
* Now report the status as returned by the hardware with
* attempt at interpretation (unless debugging).
*/
printf("%s %s error:", device_xname(sc->sc_dev),
(bp->b_flags & B_READ) ? "read" : "write");
#ifdef DEBUG
if (rddebug & RDB_ERROR) {
/* status info */
printf("\n volume: %d, unit: %d\n",
(sp->c_vu>>4)&0xF, sp->c_vu&0xF);
rdprinterr("reject", sp->c_ref, err_reject);
rdprinterr("fault", sp->c_fef, err_fault);
rdprinterr("access", sp->c_aef, err_access);
rdprinterr("info", sp->c_ief, err_info);
printf(" block: %lld, P1-P10: ", hwbn);
printf("0x%x", *(u_int *)&sp->c_raw[0]);
printf("0x%x", *(u_int *)&sp->c_raw[4]);
printf("0x%x\n", *(u_short *)&sp->c_raw[8]);
/* command */
printf(" ioc: ");
printf("0x%x", *(u_int *)&sc->sc_ioc.c_pad);
printf("0x%x", *(u_short *)&sc->sc_ioc.c_hiaddr);
printf("0x%x", *(u_int *)&sc->sc_ioc.c_addr);
printf("0x%x", *(u_short *)&sc->sc_ioc.c_nop2);
printf("0x%x", *(u_int *)&sc->sc_ioc.c_len);
printf("0x%x\n", *(u_short *)&sc->sc_ioc.c_cmd);
return 1;
}
#endif
printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n",
(sp->c_vu>>4)&0xF, sp->c_vu&0xF,
sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief);
printf("P1-P10: ");
printf("0x%x", *(u_int *)&sp->c_raw[0]);
printf("0x%x", *(u_int *)&sp->c_raw[4]);
printf("0x%x\n", *(u_short *)&sp->c_raw[8]);
return 1;
}
static int
rdread(dev_t dev, struct uio *uio, int flags)
{
return physio(rdstrategy, NULL, dev, B_READ, minphys, uio);
}
static int
rdwrite(dev_t dev, struct uio *uio, int flags)
{
return physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio);
}
static int
rdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
{
struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev));
struct disklabel *lp = sc->sc_dkdev.dk_label;
int error, flags;
switch (cmd) {
case DIOCGDINFO:
*(struct disklabel *)data = *lp;
return 0;
case DIOCGPART:
((struct partinfo *)data)->disklab = lp;
((struct partinfo *)data)->part =
&lp->d_partitions[rdpart(dev)];
return 0;
case DIOCWLABEL:
if ((flag & FWRITE) == 0)
return EBADF;
if (*(int *)data)
sc->sc_flags |= RDF_WLABEL;
else
sc->sc_flags &= ~RDF_WLABEL;
return 0;
case DIOCSDINFO:
if ((flag & FWRITE) == 0)
return EBADF;
return setdisklabel(lp, (struct disklabel *)data,
(sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask,
NULL);
case DIOCWDINFO:
if ((flag & FWRITE) == 0)
return EBADF;
error = setdisklabel(lp, (struct disklabel *)data,
(sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask,
NULL);
if (error)
return error;
flags = sc->sc_flags;
sc->sc_flags = RDF_ALIVE | RDF_WLABEL;
error = writedisklabel(rdlabdev(dev), rdstrategy, lp, NULL);
sc->sc_flags = flags;
return error;
case DIOCGDEFLABEL:
rdgetdefaultlabel(sc, (struct disklabel *)data);
return 0;
}
return EINVAL;
}
static void
rdgetdefaultlabel(struct rd_softc *sc, struct disklabel *lp)
{
int type = sc->sc_type;
memset((void *)lp, 0, sizeof(struct disklabel));
lp->d_type = DTYPE_HPIB;
lp->d_secsize = DEV_BSIZE;
lp->d_nsectors = rdidentinfo[type].ri_nbpt;
lp->d_ntracks = rdidentinfo[type].ri_ntpc;
lp->d_ncylinders = rdidentinfo[type].ri_ncyl;
lp->d_secperunit = rdidentinfo[type].ri_nblocks;
lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
strlcpy(lp->d_typename, rdidentinfo[type].ri_desc,
sizeof(lp->d_typename));
strlcpy(lp->d_packname, "fictitious", sizeof(lp->d_packname));
lp->d_rpm = 3000;
lp->d_interleave = 1;
lp->d_flags = 0;
lp->d_partitions[RAW_PART].p_offset = 0;
lp->d_partitions[RAW_PART].p_size =
lp->d_secperunit * (lp->d_secsize / DEV_BSIZE);
lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
lp->d_npartitions = RAW_PART + 1;
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
lp->d_checksum = dkcksum(lp);
}
int
rdsize(dev_t dev)
{
struct rd_softc *sc;
int psize, didopen = 0;
sc = device_lookup_private(&rd_cd, rdunit(dev));
if (sc == NULL)
return ENXIO;
if ((sc->sc_flags & RDF_ALIVE) == 0)
return ENXIO;
/*
* We get called very early on (via swapconf)
* without the device being open so we may need
* to handle it here.
*/
if (sc->sc_dkdev.dk_openmask == 0) {
if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL))
return -1;
didopen = 1;
}
psize = sc->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size *
(sc->sc_dkdev.dk_label->d_secsize / DEV_BSIZE);
if (didopen)
(void)rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL);
return psize;
}
#ifdef DEBUG
static void
rdprinterr(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 rddoingadump; /* simple mutex */
/*
* Non-interrupt driven, non-DMA dump routine.
*/
static int
rddump(dev_t dev, daddr_t blkno, void *va, size_t size)
{
int sectorsize; /* size of a disk sector */
int nsects; /* number of sectors in partition */
int 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 rd_softc *sc;
struct disklabel *lp;
char stat;
/* Check for recursive dump; if so, punt. */
if (rddoingadump)
return EFAULT;
rddoingadump = 1;
/* Decompose unit and partition. */
unit = rdunit(dev);
part = rdpart(dev);
/* Make sure dump device is ok. */
sc = device_lookup_private(&rd_cd, rdunit(dev));
if (sc == NULL)
return ENXIO;
if ((sc->sc_flags & RDF_ALIVE) == 0)
return ENXIO;
ctlr = device_unit(device_parent(sc->sc_dev));
slave = sc->sc_slave;
/*
* Convert to disk sectors. Request must be a multiple of size.
*/
lp = sc->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 = lp->d_partitions[part].p_size;
sectoff = lp->d_partitions[part].p_offset;
/* 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 RD_DUMP_NOT_TRUSTED
/*
* Fill out and send HPIB command.
*/
sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit);
sc->sc_ioc.c_volume = C_SVOL(0);
sc->sc_ioc.c_saddr = C_SADDR;
sc->sc_ioc.c_hiaddr = 0;
sc->sc_ioc.c_addr = RDBTOS(blkno);
sc->sc_ioc.c_nop2 = C_NOP;
sc->sc_ioc.c_slen = C_SLEN;
sc->sc_ioc.c_len = nwrt * sectorsize;
sc->sc_ioc.c_cmd = C_WRITE;
hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit,
sizeof(sc->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 /* RD_DUMP_NOT_TRUSTED */
/* Let's just talk about this first... */
printf("%s: dump addr %p, blk %d\n", device_xname(sc->sc_dev),
va, blkno);
delay(500 * 1000); /* half a second */
#endif /* RD_DUMP_NOT_TRUSTED */
/* update block count */
totwrt -= nwrt;
blkno += nwrt;
va = (char *)va + sectorsize * nwrt;
}
rddoingadump = 0;
return 0;
}