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NetBSD/sys/dev/ata/wd.c
riastradh bc01998d73 Initialize b_resid before biodone in wdioctlstrategy error branch. 
Otherwise we may panic when physio's biodone callback kasserts
something about b_resid, since nothing will have initialized it.
2013-01-09 22:03:49 +00:00

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/* $NetBSD: wd.c,v 1.402 2013/01/09 22:03:49 riastradh Exp $ */
/*
* Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved.
*
* 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 AUTHOR ``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 AUTHOR 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) 1998, 2003, 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum and by Onno van der Linden.
*
* 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.402 2013/01/09 22:03:49 riastradh Exp $");
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/buf.h>
#include <sys/bufq.h>
#include <sys/uio.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/syslog.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <sys/vnode.h>
#include <sys/rnd.h>
#include <sys/intr.h>
#include <sys/bus.h>
#include <dev/ata/atareg.h>
#include <dev/ata/atavar.h>
#include <dev/ata/wdvar.h>
#include <dev/ic/wdcreg.h>
#include <sys/ataio.h>
#include "locators.h"
#include <prop/proplib.h>
#define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */
#define WDIORETRIES 5 /* number of retries before giving up */
#define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */
#define WDUNIT(dev) DISKUNIT(dev)
#define WDPART(dev) DISKPART(dev)
#define WDMINOR(unit, part) DISKMINOR(unit, part)
#define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part)
#define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART))
#define DEBUG_INTR 0x01
#define DEBUG_XFERS 0x02
#define DEBUG_STATUS 0x04
#define DEBUG_FUNCS 0x08
#define DEBUG_PROBE 0x10
#ifdef ATADEBUG
int wdcdebug_wd_mask = 0x0;
#define ATADEBUG_PRINT(args, level) \
if (wdcdebug_wd_mask & (level)) \
printf args
#else
#define ATADEBUG_PRINT(args, level)
#endif
int wdprobe(device_t, cfdata_t, void *);
void wdattach(device_t, device_t, void *);
int wddetach(device_t, int);
int wdprint(void *, char *);
void wdperror(const struct wd_softc *);
static void wdminphys(struct buf *);
static int wdlastclose(device_t);
static bool wd_suspend(device_t, const pmf_qual_t *);
static int wd_standby(struct wd_softc *, int);
CFATTACH_DECL3_NEW(wd, sizeof(struct wd_softc),
wdprobe, wdattach, wddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN);
extern struct cfdriver wd_cd;
dev_type_open(wdopen);
dev_type_close(wdclose);
dev_type_read(wdread);
dev_type_write(wdwrite);
dev_type_ioctl(wdioctl);
dev_type_strategy(wdstrategy);
dev_type_dump(wddump);
dev_type_size(wdsize);
const struct bdevsw wd_bdevsw = {
wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK
};
const struct cdevsw wd_cdevsw = {
wdopen, wdclose, wdread, wdwrite, wdioctl,
nostop, notty, nopoll, nommap, nokqfilter, D_DISK
};
/*
* Glue necessary to hook WDCIOCCOMMAND into physio
*/
struct wd_ioctl {
LIST_ENTRY(wd_ioctl) wi_list;
struct buf wi_bp;
struct uio wi_uio;
struct iovec wi_iov;
atareq_t wi_atareq;
struct wd_softc *wi_softc;
};
LIST_HEAD(, wd_ioctl) wi_head;
struct wd_ioctl *wi_find(struct buf *);
void wi_free(struct wd_ioctl *);
struct wd_ioctl *wi_get(void);
void wdioctlstrategy(struct buf *);
void wdgetdefaultlabel(struct wd_softc *, struct disklabel *);
void wdgetdisklabel(struct wd_softc *);
void wdstart(void *);
void wdstart1(struct wd_softc*, struct buf *);
void wdrestart(void *);
void wddone(void *);
int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *);
int wd_flushcache(struct wd_softc *, int);
int wd_trim(struct wd_softc *, int, struct disk_discard_range *);
bool wd_shutdown(device_t, int);
int wd_getcache(struct wd_softc *, int *);
int wd_setcache(struct wd_softc *, int);
struct dkdriver wddkdriver = { wdstrategy, wdminphys };
#ifdef HAS_BAD144_HANDLING
static void bad144intern(struct wd_softc *);
#endif
#define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */
#define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48"
/*
* Quirk table for IDE drives. Put more-specific matches first, since
* a simple globing routine is used for matching.
*/
static const struct wd_quirk {
const char *wdq_match; /* inquiry pattern to match */
int wdq_quirks; /* drive quirks */
} wd_quirk_table[] = {
/*
* Some Seagate S-ATA drives have a PHY which can get confused
* with the way data is packetized by some S-ATA controllers.
*
* The work-around is to split in two any write transfer whose
* sector count % 15 == 1 (assuming 512 byte sectors).
*
* XXX This is an incomplete list. There are at least a couple
* XXX more model numbers. If you have trouble with such transfers
* XXX (8K is the most common) on Seagate S-ATA drives, please
* XXX notify thorpej@NetBSD.org.
*
* The ST360015AS has not yet been confirmed to have this
* issue, however, it is the only other drive in the
* Seagate Barracuda Serial ATA V family.
*
*/
{ "ST3120023AS",
WD_QUIRK_SPLIT_MOD15_WRITE },
{ "ST380023AS",
WD_QUIRK_SPLIT_MOD15_WRITE },
{ "ST360015AS",
WD_QUIRK_SPLIT_MOD15_WRITE },
{ NULL,
0 }
};
static const struct wd_quirk *
wd_lookup_quirks(const char *name)
{
const struct wd_quirk *wdq;
const char *estr;
for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) {
/*
* We only want exact matches (which include matches
* against globbing characters).
*/
if (pmatch(name, wdq->wdq_match, &estr) == 2)
return (wdq);
}
return (NULL);
}
int
wdprobe(device_t parent, cfdata_t match, void *aux)
{
struct ata_device *adev = aux;
if (adev == NULL)
return 0;
if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA)
return 0;
if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT &&
match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive)
return 0;
return 1;
}
void
wdattach(device_t parent, device_t self, void *aux)
{
struct wd_softc *wd = device_private(self);
struct ata_device *adev= aux;
int i, blank;
char tbuf[41], pbuf[9], c, *p, *q;
const struct wd_quirk *wdq;
wd->sc_dev = self;
ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE);
callout_init(&wd->sc_restart_ch, 0);
bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK);
#ifdef WD_SOFTBADSECT
SLIST_INIT(&wd->sc_bslist);
#endif
wd->atabus = adev->adev_bustype;
wd->openings = adev->adev_openings;
wd->drvp = adev->adev_drv_data;
wd->drvp->drv_done = wddone;
wd->drvp->drv_softc = wd->sc_dev; /* done in atabusconfig_thread()
but too late */
aprint_naive("\n");
aprint_normal("\n");
/* read our drive info */
if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) {
aprint_error_dev(self, "IDENTIFY failed\n");
goto out;
}
for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0;
i < sizeof(wd->sc_params.atap_model); i++) {
c = *p++;
if (c == '\0')
break;
if (c != ' ') {
if (blank) {
*q++ = ' ';
blank = 0;
}
*q++ = c;
} else
blank = 1;
}
*q++ = '\0';
aprint_normal_dev(self, "<%s>\n", tbuf);
wdq = wd_lookup_quirks(tbuf);
if (wdq != NULL)
wd->sc_quirks = wdq->wdq_quirks;
if (wd->sc_quirks != 0) {
char sbuf[sizeof(WD_QUIRK_FMT) + 64];
snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks);
aprint_normal_dev(self, "quirks %s\n", sbuf);
}
if ((wd->sc_params.atap_multi & 0xff) > 1) {
wd->sc_multi = wd->sc_params.atap_multi & 0xff;
} else {
wd->sc_multi = 1;
}
aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,",
wd->sc_multi);
/* 48-bit LBA addressing */
if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0)
wd->sc_flags |= WDF_LBA48;
/* Prior to ATA-4, LBA was optional. */
if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0)
wd->sc_flags |= WDF_LBA;
#if 0
/* ATA-4 requires LBA. */
if (wd->sc_params.atap_ataversion != 0xffff &&
wd->sc_params.atap_ataversion >= WDC_VER_ATA4)
wd->sc_flags |= WDF_LBA;
#endif
if ((wd->sc_flags & WDF_LBA48) != 0) {
aprint_verbose(" LBA48 addressing\n");
wd->sc_capacity =
((u_int64_t) wd->sc_params.atap_max_lba[3] << 48) |
((u_int64_t) wd->sc_params.atap_max_lba[2] << 32) |
((u_int64_t) wd->sc_params.atap_max_lba[1] << 16) |
((u_int64_t) wd->sc_params.atap_max_lba[0] << 0);
wd->sc_capacity28 =
(wd->sc_params.atap_capacity[1] << 16) |
wd->sc_params.atap_capacity[0];
} else if ((wd->sc_flags & WDF_LBA) != 0) {
aprint_verbose(" LBA addressing\n");
wd->sc_capacity28 = wd->sc_capacity =
(wd->sc_params.atap_capacity[1] << 16) |
wd->sc_params.atap_capacity[0];
} else {
aprint_verbose(" chs addressing\n");
wd->sc_capacity28 = wd->sc_capacity =
wd->sc_params.atap_cylinders *
wd->sc_params.atap_heads *
wd->sc_params.atap_sectors;
}
format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE);
aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, "
"%d bytes/sect x %llu sectors\n",
pbuf,
(wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity /
(wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) :
wd->sc_params.atap_cylinders,
wd->sc_params.atap_heads, wd->sc_params.atap_sectors,
DEV_BSIZE, (unsigned long long)wd->sc_capacity);
ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n",
device_xname(self), wd->sc_params.atap_dmatiming_mimi,
wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE);
out:
/*
* Initialize and attach the disk structure.
*/
/* we fill in dk_info later */
disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver);
disk_attach(&wd->sc_dk);
wd->sc_wdc_bio.lp = wd->sc_dk.dk_label;
rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev),
RND_TYPE_DISK, 0);
/* Discover wedges on this disk. */
dkwedge_discover(&wd->sc_dk);
if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown))
aprint_error_dev(self, "couldn't establish power handler\n");
}
static bool
wd_suspend(device_t dv, const pmf_qual_t *qual)
{
struct wd_softc *sc = device_private(dv);
wd_flushcache(sc, AT_WAIT);
wd_standby(sc, AT_WAIT);
return true;
}
int
wddetach(device_t self, int flags)
{
struct wd_softc *sc = device_private(self);
int bmaj, cmaj, i, mn, rc, s;
if ((rc = disk_begindetach(&sc->sc_dk, wdlastclose, self, flags)) != 0)
return rc;
/* locate the major number */
bmaj = bdevsw_lookup_major(&wd_bdevsw);
cmaj = cdevsw_lookup_major(&wd_cdevsw);
/* Nuke the vnodes for any open instances. */
for (i = 0; i < MAXPARTITIONS; i++) {
mn = WDMINOR(device_unit(self), i);
vdevgone(bmaj, mn, mn, VBLK);
vdevgone(cmaj, mn, mn, VCHR);
}
/* Delete all of our wedges. */
dkwedge_delall(&sc->sc_dk);
s = splbio();
/* Kill off any queued buffers. */
bufq_drain(sc->sc_q);
bufq_free(sc->sc_q);
sc->atabus->ata_killpending(sc->drvp);
splx(s);
/* Detach disk. */
disk_detach(&sc->sc_dk);
disk_destroy(&sc->sc_dk);
#ifdef WD_SOFTBADSECT
/* Clean out the bad sector list */
while (!SLIST_EMPTY(&sc->sc_bslist)) {
void *head = SLIST_FIRST(&sc->sc_bslist);
SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next);
free(head, M_TEMP);
}
sc->sc_bscount = 0;
#endif
pmf_device_deregister(self);
/* Unhook the entropy source. */
rnd_detach_source(&sc->rnd_source);
callout_destroy(&sc->sc_restart_ch);
sc->drvp->drive_type = ATA_DRIVET_NONE; /* no drive any more here */
sc->drvp->drive_flags = 0;
return (0);
}
/*
* Read/write routine for a buffer. Validates the arguments and schedules the
* transfer. Does not wait for the transfer to complete.
*/
void
wdstrategy(struct buf *bp)
{
struct wd_softc *wd =
device_lookup_private(&wd_cd, WDUNIT(bp->b_dev));
struct disklabel *lp = wd->sc_dk.dk_label;
daddr_t blkno;
int s;
ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)),
DEBUG_XFERS);
/* Valid request? */
if (bp->b_blkno < 0 ||
(bp->b_bcount % lp->d_secsize) != 0 ||
(bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) {
bp->b_error = EINVAL;
goto done;
}
/* If device invalidated (e.g. media change, door open,
* device detachment), then error.
*/
if ((wd->sc_flags & WDF_LOADED) == 0 ||
!device_is_enabled(wd->sc_dev)) {
bp->b_error = EIO;
goto done;
}
/* If it's a null transfer, return immediately. */
if (bp->b_bcount == 0)
goto done;
/*
* Do bounds checking, adjust transfer. if error, process.
* If end of partition, just return.
*/
if (WDPART(bp->b_dev) == RAW_PART) {
if (bounds_check_with_mediasize(bp, DEV_BSIZE,
wd->sc_capacity) <= 0)
goto done;
} else {
if (bounds_check_with_label(&wd->sc_dk, bp,
(wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0)
goto done;
}
/*
* Now convert the block number to absolute and put it in
* terms of the device's logical block size.
*/
if (lp->d_secsize >= DEV_BSIZE)
blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE);
else
blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize);
if (WDPART(bp->b_dev) != RAW_PART)
blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset;
bp->b_rawblkno = blkno;
#ifdef WD_SOFTBADSECT
/*
* If the transfer about to be attempted contains only a block that
* is known to be bad then return an error for the transfer without
* even attempting to start a transfer up under the premis that we
* will just end up doing more retries for a transfer that will end
* up failing again.
* XXX:SMP - mutex required to protect with DIOCBSFLUSH
*/
if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) {
struct disk_badsectors *dbs;
daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1;
SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next)
if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) ||
(dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){
bp->b_error = EIO;
goto done;
}
}
#endif
/* Queue transfer on drive, activate drive and controller if idle. */
s = splbio();
bufq_put(wd->sc_q, bp);
wdstart(wd);
splx(s);
return;
done:
/* Toss transfer; we're done early. */
bp->b_resid = bp->b_bcount;
biodone(bp);
}
/*
* Queue a drive for I/O.
*/
void
wdstart(void *arg)
{
struct wd_softc *wd = arg;
struct buf *bp = NULL;
ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)),
DEBUG_XFERS);
if (!device_is_active(wd->sc_dev))
return;
while (wd->openings > 0) {
/* Is there a buf for us ? */
if ((bp = bufq_get(wd->sc_q)) == NULL)
return;
/*
* Make the command. First lock the device
*/
wd->openings--;
wd->retries = 0;
wdstart1(wd, bp);
}
}
static void
wd_split_mod15_write(struct buf *bp)
{
struct buf *obp = bp->b_private;
struct wd_softc *sc =
device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev));
int s;
if (__predict_false(bp->b_error != 0)) {
/*
* Propagate the error. If this was the first half of
* the original transfer, make sure to account for that
* in the residual.
*/
if (bp->b_data == obp->b_data)
bp->b_resid += bp->b_bcount;
goto done;
}
/*
* If this was the second half of the transfer, we're all done!
*/
if (bp->b_data != obp->b_data)
goto done;
/*
* Advance the pointer to the second half and issue that command
* using the same opening.
*/
bp->b_flags = obp->b_flags;
bp->b_oflags = obp->b_oflags;
bp->b_cflags = obp->b_cflags;
bp->b_data = (char *)bp->b_data + bp->b_bcount;
bp->b_blkno += (bp->b_bcount / 512);
bp->b_rawblkno += (bp->b_bcount / 512);
s = splbio();
wdstart1(sc, bp);
splx(s);
return;
done:
obp->b_error = bp->b_error;
obp->b_resid = bp->b_resid;
s = splbio();
putiobuf(bp);
biodone(obp);
sc->openings++;
splx(s);
/* wddone() will call wdstart() */
}
void
wdstart1(struct wd_softc *wd, struct buf *bp)
{
/*
* Deal with the "split mod15 write" quirk. We just divide the
* transfer in two, doing the first half and then then second half
* with the same command opening.
*
* Note we MUST do this here, because we can't let insertion
* into the bufq cause the transfers to be re-merged.
*/
if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 &&
(bp->b_flags & B_READ) == 0 &&
bp->b_bcount > 512 &&
((bp->b_bcount / 512) % 15) == 1)) {
struct buf *nbp;
/* already at splbio */
nbp = getiobuf(NULL, false);
if (__predict_false(nbp == NULL)) {
/* No memory -- fail the iop. */
bp->b_error = ENOMEM;
bp->b_resid = bp->b_bcount;
biodone(bp);
wd->openings++;
return;
}
nbp->b_error = 0;
nbp->b_proc = bp->b_proc;
nbp->b_dev = bp->b_dev;
nbp->b_bcount = bp->b_bcount / 2;
nbp->b_bufsize = bp->b_bcount / 2;
nbp->b_data = bp->b_data;
nbp->b_blkno = bp->b_blkno;
nbp->b_rawblkno = bp->b_rawblkno;
nbp->b_flags = bp->b_flags;
nbp->b_oflags = bp->b_oflags;
nbp->b_cflags = bp->b_cflags;
nbp->b_iodone = wd_split_mod15_write;
/* Put ptr to orig buf in b_private and use new buf */
nbp->b_private = bp;
BIO_COPYPRIO(nbp, bp);
bp = nbp;
}
wd->sc_wdc_bio.blkno = bp->b_rawblkno;
wd->sc_wdc_bio.bcount = bp->b_bcount;
wd->sc_wdc_bio.databuf = bp->b_data;
wd->sc_wdc_bio.blkdone =0;
KASSERT(bp == wd->sc_bp || wd->sc_bp == NULL);
wd->sc_bp = bp;
/*
* If we're retrying, retry in single-sector mode. This will give us
* the sector number of the problem, and will eventually allow the
* transfer to succeed.
*/
if (wd->retries >= WDIORETRIES_SINGLE)
wd->sc_wdc_bio.flags = ATA_SINGLE;
else
wd->sc_wdc_bio.flags = 0;
if (wd->sc_flags & WDF_LBA48 &&
(wd->sc_wdc_bio.blkno +
wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) >
wd->sc_capacity28)
wd->sc_wdc_bio.flags |= ATA_LBA48;
if (wd->sc_flags & WDF_LBA)
wd->sc_wdc_bio.flags |= ATA_LBA;
if (bp->b_flags & B_READ)
wd->sc_wdc_bio.flags |= ATA_READ;
/* Instrumentation. */
disk_busy(&wd->sc_dk);
switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) {
case ATACMD_TRY_AGAIN:
callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd);
break;
case ATACMD_QUEUED:
case ATACMD_COMPLETE:
break;
default:
panic("wdstart1: bad return code from ata_bio()");
}
}
void
wddone(void *v)
{
struct wd_softc *wd = device_private(v);
struct buf *bp = wd->sc_bp;
const char *errmsg;
int do_perror = 0;
ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)),
DEBUG_XFERS);
if (bp == NULL)
return;
bp->b_resid = wd->sc_wdc_bio.bcount;
switch (wd->sc_wdc_bio.error) {
case ERR_DMA:
errmsg = "DMA error";
goto retry;
case ERR_DF:
errmsg = "device fault";
goto retry;
case TIMEOUT:
errmsg = "device timeout";
goto retry;
case ERR_RESET:
errmsg = "channel reset";
goto retry2;
case ERROR:
/* Don't care about media change bits */
if (wd->sc_wdc_bio.r_error != 0 &&
(wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0)
goto noerror;
errmsg = "error";
do_perror = 1;
retry: /* Just reset and retry. Can we do more ? */
(*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD, NULL);
retry2:
diskerr(bp, "wd", errmsg, LOG_PRINTF,
wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label);
if (wd->retries < WDIORETRIES)
printf(", retrying");
printf("\n");
if (do_perror)
wdperror(wd);
if (wd->retries < WDIORETRIES) {
wd->retries++;
callout_reset(&wd->sc_restart_ch, RECOVERYTIME,
wdrestart, wd);
return;
}
#ifdef WD_SOFTBADSECT
/*
* Not all errors indicate a failed block but those that do,
* put the block on the bad-block list for the device. Only
* do this for reads because the drive should do it for writes,
* itself, according to Manuel.
*/
if ((bp->b_flags & B_READ) &&
((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) ||
(wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) {
struct disk_badsectors *dbs;
dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK);
dbs->dbs_min = bp->b_rawblkno;
dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1;
microtime(&dbs->dbs_failedat);
SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next);
wd->sc_bscount++;
}
#endif
bp->b_error = EIO;
break;
case NOERROR:
noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0)
aprint_error_dev(wd->sc_dev,
"soft error (corrected)\n");
break;
case ERR_NODEV:
bp->b_error = EIO;
break;
}
if (__predict_false(bp->b_error != 0) && bp->b_resid == 0) {
/*
* the disk or controller sometimes report a complete
* xfer, when there has been an error. This is wrong,
* assume nothing got transfered in this case
*/
bp->b_resid = bp->b_bcount;
}
disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid),
(bp->b_flags & B_READ));
rnd_add_uint32(&wd->rnd_source, bp->b_blkno);
/* XXX Yuck, but we don't want to increment openings in this case */
if (__predict_false(bp->b_iodone == wd_split_mod15_write))
biodone(bp);
else {
biodone(bp);
wd->openings++;
}
KASSERT(wd->sc_bp != NULL);
wd->sc_bp = NULL;
wdstart(wd);
}
void
wdrestart(void *v)
{
struct wd_softc *wd = v;
struct buf *bp = wd->sc_bp;
int s;
ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)),
DEBUG_XFERS);
s = splbio();
wdstart1(v, bp);
splx(s);
}
static void
wdminphys(struct buf *bp)
{
if (bp->b_bcount > (512 * 128)) {
bp->b_bcount = (512 * 128);
}
minphys(bp);
}
int
wdread(dev_t dev, struct uio *uio, int flags)
{
ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS);
return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio));
}
int
wdwrite(dev_t dev, struct uio *uio, int flags)
{
ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS);
return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio));
}
int
wdopen(dev_t dev, int flag, int fmt, struct lwp *l)
{
struct wd_softc *wd;
int part, error;
ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS);
wd = device_lookup_private(&wd_cd, WDUNIT(dev));
if (wd == NULL)
return (ENXIO);
if (! device_is_active(wd->sc_dev))
return (ENODEV);
if (wd->sc_capacity == 0)
return (ENODEV);
part = WDPART(dev);
mutex_enter(&wd->sc_dk.dk_openlock);
/*
* If there are wedges, and this is not RAW_PART, then we
* need to fail.
*/
if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) {
error = EBUSY;
goto bad1;
}
/*
* If this is the first open of this device, add a reference
* to the adapter.
*/
if (wd->sc_dk.dk_openmask == 0 &&
(error = wd->atabus->ata_addref(wd->drvp)) != 0)
goto bad1;
if (wd->sc_dk.dk_openmask != 0) {
/*
* If any partition is open, but the disk has been invalidated,
* disallow further opens.
*/
if ((wd->sc_flags & WDF_LOADED) == 0) {
error = EIO;
goto bad2;
}
} else {
if ((wd->sc_flags & WDF_LOADED) == 0) {
/* Load the physical device parameters. */
if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) {
aprint_error_dev(wd->sc_dev,
"IDENTIFY failed\n");
error = EIO;
goto bad2;
}
wd->sc_flags |= WDF_LOADED;
/* Load the partition info if not already loaded. */
wdgetdisklabel(wd);
}
}
/* Check that the partition exists. */
if (part != RAW_PART &&
(part >= wd->sc_dk.dk_label->d_npartitions ||
wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) {
error = ENXIO;
goto bad2;
}
/* Insure only one open at a time. */
switch (fmt) {
case S_IFCHR:
wd->sc_dk.dk_copenmask |= (1 << part);
break;
case S_IFBLK:
wd->sc_dk.dk_bopenmask |= (1 << part);
break;
}
wd->sc_dk.dk_openmask =
wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask;
mutex_exit(&wd->sc_dk.dk_openlock);
return 0;
bad2:
if (wd->sc_dk.dk_openmask == 0)
wd->atabus->ata_delref(wd->drvp);
bad1:
mutex_exit(&wd->sc_dk.dk_openlock);
return error;
}
/*
* Caller must hold wd->sc_dk.dk_openlock.
*/
static int
wdlastclose(device_t self)
{
struct wd_softc *wd = device_private(self);
wd_flushcache(wd, AT_WAIT);
if (! (wd->sc_flags & WDF_KLABEL))
wd->sc_flags &= ~WDF_LOADED;
wd->atabus->ata_delref(wd->drvp);
return 0;
}
int
wdclose(dev_t dev, int flag, int fmt, struct lwp *l)
{
struct wd_softc *wd =
device_lookup_private(&wd_cd, WDUNIT(dev));
int part = WDPART(dev);
ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS);
mutex_enter(&wd->sc_dk.dk_openlock);
switch (fmt) {
case S_IFCHR:
wd->sc_dk.dk_copenmask &= ~(1 << part);
break;
case S_IFBLK:
wd->sc_dk.dk_bopenmask &= ~(1 << part);
break;
}
wd->sc_dk.dk_openmask =
wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask;
if (wd->sc_dk.dk_openmask == 0)
wdlastclose(wd->sc_dev);
mutex_exit(&wd->sc_dk.dk_openlock);
return 0;
}
void
wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp)
{
ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS);
memset(lp, 0, sizeof(struct disklabel));
lp->d_secsize = DEV_BSIZE;
lp->d_ntracks = wd->sc_params.atap_heads;
lp->d_nsectors = wd->sc_params.atap_sectors;
lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity /
(wd->sc_params.atap_heads * wd->sc_params.atap_sectors) :
wd->sc_params.atap_cylinders;
lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
if (strcmp(wd->sc_params.atap_model, "ST506") == 0)
lp->d_type = DTYPE_ST506;
else
lp->d_type = DTYPE_ESDI;
strncpy(lp->d_typename, wd->sc_params.atap_model, 16);
strncpy(lp->d_packname, "fictitious", 16);
if (wd->sc_capacity > UINT32_MAX)
lp->d_secperunit = UINT32_MAX;
else
lp->d_secperunit = wd->sc_capacity;
lp->d_rpm = 3600;
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);
}
/*
* Fabricate a default disk label, and try to read the correct one.
*/
void
wdgetdisklabel(struct wd_softc *wd)
{
struct disklabel *lp = wd->sc_dk.dk_label;
const char *errstring;
int s;
ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS);
memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel));
wdgetdefaultlabel(wd, lp);
wd->sc_badsect[0] = -1;
if (wd->drvp->state > RESET) {
s = splbio();
wd->drvp->drive_flags |= ATA_DRIVE_RESET;
splx(s);
}
errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev),
RAW_PART), wdstrategy, lp,
wd->sc_dk.dk_cpulabel);
if (errstring) {
/*
* This probably happened because the drive's default
* geometry doesn't match the DOS geometry. We
* assume the DOS geometry is now in the label and try
* again. XXX This is a kluge.
*/
if (wd->drvp->state > RESET) {
s = splbio();
wd->drvp->drive_flags |= ATA_DRIVE_RESET;
splx(s);
}
errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev),
RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel);
}
if (errstring) {
aprint_error_dev(wd->sc_dev, "%s\n", errstring);
return;
}
if (wd->drvp->state > RESET) {
s = splbio();
wd->drvp->drive_flags |= ATA_DRIVE_RESET;
splx(s);
}
#ifdef HAS_BAD144_HANDLING
if ((lp->d_flags & D_BADSECT) != 0)
bad144intern(wd);
#endif
}
void
wdperror(const struct wd_softc *wd)
{
static const char *const errstr0_3[] = {"address mark not found",
"track 0 not found", "aborted command", "media change requested",
"id not found", "media changed", "uncorrectable data error",
"bad block detected"};
static const char *const errstr4_5[] = {
"obsolete (address mark not found)",
"no media/write protected", "aborted command",
"media change requested", "id not found", "media changed",
"uncorrectable data error", "interface CRC error"};
const char *const *errstr;
int i;
const char *sep = "";
const char *devname = device_xname(wd->sc_dev);
struct ata_drive_datas *drvp = wd->drvp;
int errno = wd->sc_wdc_bio.r_error;
if (drvp->ata_vers >= 4)
errstr = errstr4_5;
else
errstr = errstr0_3;
printf("%s: (", devname);
if (errno == 0)
printf("error not notified");
for (i = 0; i < 8; i++) {
if (errno & (1 << i)) {
printf("%s%s", sep, errstr[i]);
sep = ", ";
}
}
printf(")\n");
}
int
wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l)
{
struct wd_softc *wd =
device_lookup_private(&wd_cd, WDUNIT(dev));
int error = 0, s;
#ifdef __HAVE_OLD_DISKLABEL
struct disklabel *newlabel = NULL;
#endif
ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS);
if ((wd->sc_flags & WDF_LOADED) == 0)
return EIO;
error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l);
if (error != EPASSTHROUGH)
return (error);
switch (xfer) {
#ifdef HAS_BAD144_HANDLING
case DIOCSBAD:
if ((flag & FWRITE) == 0)
return EBADF;
wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr;
wd->sc_dk.dk_label->d_flags |= D_BADSECT;
bad144intern(wd);
return 0;
#endif
#ifdef WD_SOFTBADSECT
case DIOCBSLIST :
{
u_int32_t count, missing, skip;
struct disk_badsecinfo dbsi;
struct disk_badsectors *dbs;
size_t available;
uint8_t *laddr;
dbsi = *(struct disk_badsecinfo *)addr;
missing = wd->sc_bscount;
count = 0;
available = dbsi.dbsi_bufsize;
skip = dbsi.dbsi_skip;
laddr = (uint8_t *)dbsi.dbsi_buffer;
/*
* We start this loop with the expectation that all of the
* entries will be missed and decrement this counter each
* time we either skip over one (already copied out) or
* we actually copy it back to user space. The structs
* holding the bad sector information are copied directly
* back to user space whilst the summary is returned via
* the struct passed in via the ioctl.
*/
SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) {
if (skip > 0) {
missing--;
skip--;
continue;
}
if (available < sizeof(*dbs))
break;
available -= sizeof(*dbs);
copyout(dbs, laddr, sizeof(*dbs));
laddr += sizeof(*dbs);
missing--;
count++;
}
dbsi.dbsi_left = missing;
dbsi.dbsi_copied = count;
*(struct disk_badsecinfo *)addr = dbsi;
return 0;
}
case DIOCBSFLUSH :
/* Clean out the bad sector list */
while (!SLIST_EMPTY(&wd->sc_bslist)) {
void *head = SLIST_FIRST(&wd->sc_bslist);
SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next);
free(head, M_TEMP);
}
wd->sc_bscount = 0;
return 0;
#endif
case DIOCGDINFO:
*(struct disklabel *)addr = *(wd->sc_dk.dk_label);
return 0;
#ifdef __HAVE_OLD_DISKLABEL
case ODIOCGDINFO:
newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK);
if (newlabel == NULL)
return EIO;
*newlabel = *(wd->sc_dk.dk_label);
if (newlabel->d_npartitions <= OLDMAXPARTITIONS)
memcpy(addr, newlabel, sizeof (struct olddisklabel));
else
error = ENOTTY;
free(newlabel, M_TEMP);
return error;
#endif
case DIOCGPART:
((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label;
((struct partinfo *)addr)->part =
&wd->sc_dk.dk_label->d_partitions[WDPART(dev)];
return 0;
case DIOCWDINFO:
case DIOCSDINFO:
#ifdef __HAVE_OLD_DISKLABEL
case ODIOCWDINFO:
case ODIOCSDINFO:
#endif
{
struct disklabel *lp;
if ((flag & FWRITE) == 0)
return EBADF;
#ifdef __HAVE_OLD_DISKLABEL
if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) {
newlabel = malloc(sizeof *newlabel, M_TEMP,
M_WAITOK | M_ZERO);
if (newlabel == NULL)
return EIO;
memcpy(newlabel, addr, sizeof (struct olddisklabel));
lp = newlabel;
} else
#endif
lp = (struct disklabel *)addr;
mutex_enter(&wd->sc_dk.dk_openlock);
wd->sc_flags |= WDF_LABELLING;
error = setdisklabel(wd->sc_dk.dk_label,
lp, /*wd->sc_dk.dk_openmask : */0,
wd->sc_dk.dk_cpulabel);
if (error == 0) {
if (wd->drvp->state > RESET) {
s = splbio();
wd->drvp->drive_flags |= ATA_DRIVE_RESET;
splx(s);
}
if (xfer == DIOCWDINFO
#ifdef __HAVE_OLD_DISKLABEL
|| xfer == ODIOCWDINFO
#endif
)
error = writedisklabel(WDLABELDEV(dev),
wdstrategy, wd->sc_dk.dk_label,
wd->sc_dk.dk_cpulabel);
}
wd->sc_flags &= ~WDF_LABELLING;
mutex_exit(&wd->sc_dk.dk_openlock);
#ifdef __HAVE_OLD_DISKLABEL
if (newlabel != NULL)
free(newlabel, M_TEMP);
#endif
return error;
}
case DIOCKLABEL:
if (*(int *)addr)
wd->sc_flags |= WDF_KLABEL;
else
wd->sc_flags &= ~WDF_KLABEL;
return 0;
case DIOCWLABEL:
if ((flag & FWRITE) == 0)
return EBADF;
if (*(int *)addr)
wd->sc_flags |= WDF_WLABEL;
else
wd->sc_flags &= ~WDF_WLABEL;
return 0;
case DIOCGDEFLABEL:
wdgetdefaultlabel(wd, (struct disklabel *)addr);
return 0;
#ifdef __HAVE_OLD_DISKLABEL
case ODIOCGDEFLABEL:
newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK);
if (newlabel == NULL)
return EIO;
wdgetdefaultlabel(wd, newlabel);
if (newlabel->d_npartitions <= OLDMAXPARTITIONS)
memcpy(addr, &newlabel, sizeof (struct olddisklabel));
else
error = ENOTTY;
free(newlabel, M_TEMP);
return error;
#endif
#ifdef notyet
case DIOCWFORMAT:
if ((flag & FWRITE) == 0)
return EBADF;
{
register struct format_op *fop;
struct iovec aiov;
struct uio auio;
fop = (struct format_op *)addr;
aiov.iov_base = fop->df_buf;
aiov.iov_len = fop->df_count;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_resid = fop->df_count;
auio.uio_offset =
fop->df_startblk * wd->sc_dk.dk_label->d_secsize;
auio.uio_vmspace = l->l_proc->p_vmspace;
error = physio(wdformat, NULL, dev, B_WRITE, wdminphys,
&auio);
fop->df_count -= auio.uio_resid;
fop->df_reg[0] = wdc->sc_status;
fop->df_reg[1] = wdc->sc_error;
return error;
}
#endif
case DIOCGCACHE:
return wd_getcache(wd, (int *)addr);
case DIOCSCACHE:
return wd_setcache(wd, *(int *)addr);
case DIOCCACHESYNC:
return wd_flushcache(wd, AT_WAIT);
case ATAIOCCOMMAND:
/*
* Make sure this command is (relatively) safe first
*/
if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 &&
(flag & FWRITE) == 0)
return (EBADF);
{
struct wd_ioctl *wi;
atareq_t *atareq = (atareq_t *) addr;
int error1;
wi = wi_get();
wi->wi_softc = wd;
wi->wi_atareq = *atareq;
if (atareq->datalen && atareq->flags &
(ATACMD_READ | ATACMD_WRITE)) {
void *tbuf;
if (atareq->datalen < DEV_BSIZE
&& atareq->command == WDCC_IDENTIFY) {
tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK);
wi->wi_iov.iov_base = tbuf;
wi->wi_iov.iov_len = DEV_BSIZE;
UIO_SETUP_SYSSPACE(&wi->wi_uio);
} else {
tbuf = NULL;
wi->wi_iov.iov_base = atareq->databuf;
wi->wi_iov.iov_len = atareq->datalen;
wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace;
}
wi->wi_uio.uio_iov = &wi->wi_iov;
wi->wi_uio.uio_iovcnt = 1;
wi->wi_uio.uio_resid = atareq->datalen;
wi->wi_uio.uio_offset = 0;
wi->wi_uio.uio_rw =
(atareq->flags & ATACMD_READ) ? B_READ : B_WRITE;
error1 = physio(wdioctlstrategy, &wi->wi_bp, dev,
(atareq->flags & ATACMD_READ) ? B_READ : B_WRITE,
wdminphys, &wi->wi_uio);
if (tbuf != NULL && error1 == 0) {
error1 = copyout(tbuf, atareq->databuf,
atareq->datalen);
free(tbuf, M_TEMP);
}
} else {
/* No need to call physio if we don't have any
user data */
wi->wi_bp.b_flags = 0;
wi->wi_bp.b_data = 0;
wi->wi_bp.b_bcount = 0;
wi->wi_bp.b_dev = 0;
wi->wi_bp.b_proc = l->l_proc;
wdioctlstrategy(&wi->wi_bp);
error1 = wi->wi_bp.b_error;
}
*atareq = wi->wi_atareq;
wi_free(wi);
return(error1);
}
case DIOCAWEDGE:
{
struct dkwedge_info *dkw = (void *) addr;
if ((flag & FWRITE) == 0)
return (EBADF);
/* If the ioctl happens here, the parent is us. */
strcpy(dkw->dkw_parent, device_xname(wd->sc_dev));
return (dkwedge_add(dkw));
}
case DIOCDWEDGE:
{
struct dkwedge_info *dkw = (void *) addr;
if ((flag & FWRITE) == 0)
return (EBADF);
/* If the ioctl happens here, the parent is us. */
strcpy(dkw->dkw_parent, device_xname(wd->sc_dev));
return (dkwedge_del(dkw));
}
case DIOCLWEDGES:
{
struct dkwedge_list *dkwl = (void *) addr;
return (dkwedge_list(&wd->sc_dk, dkwl, l));
}
case DIOCGSTRATEGY:
{
struct disk_strategy *dks = (void *)addr;
s = splbio();
strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q),
sizeof(dks->dks_name));
splx(s);
dks->dks_paramlen = 0;
return 0;
}
case DIOCSSTRATEGY:
{
struct disk_strategy *dks = (void *)addr;
struct bufq_state *new;
struct bufq_state *old;
if ((flag & FWRITE) == 0) {
return EBADF;
}
if (dks->dks_param != NULL) {
return EINVAL;
}
dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */
error = bufq_alloc(&new, dks->dks_name,
BUFQ_EXACT|BUFQ_SORT_RAWBLOCK);
if (error) {
return error;
}
s = splbio();
old = wd->sc_q;
bufq_move(new, old);
wd->sc_q = new;
splx(s);
bufq_free(old);
return 0;
}
case DIOCGDISCARDPARAMS: {
struct disk_discard_params * tp;
if (!(wd->sc_params.atap_ata_major & WDC_VER_ATA8)
|| !(wd->sc_params.support_dsm & ATA_SUPPORT_DSM_TRIM))
return ENOTTY;
tp = (struct disk_discard_params *)addr;
tp->maxsize = 0xffff; /*wd->sc_params.max_dsm_blocks*/
printf("wd: maxtrimsize %ld\n", tp->maxsize);
return 0;
}
case DIOCDISCARD:
return wd_trim(wd, WDPART(dev), (struct disk_discard_range *)addr);
default:
return ENOTTY;
}
#ifdef DIAGNOSTIC
panic("wdioctl: impossible");
#endif
}
#ifdef B_FORMAT
int
wdformat(struct buf *bp)
{
bp->b_flags |= B_FORMAT;
return wdstrategy(bp);
}
#endif
int
wdsize(dev_t dev)
{
struct wd_softc *wd;
int part, omask;
int size;
ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS);
wd = device_lookup_private(&wd_cd, WDUNIT(dev));
if (wd == NULL)
return (-1);
part = WDPART(dev);
omask = wd->sc_dk.dk_openmask & (1 << part);
if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0)
return (-1);
if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP)
size = -1;
else
size = wd->sc_dk.dk_label->d_partitions[part].p_size *
(wd->sc_dk.dk_label->d_secsize / DEV_BSIZE);
if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0)
return (-1);
return (size);
}
/* #define WD_DUMP_NOT_TRUSTED if you just want to watch */
static int wddoingadump = 0;
static int wddumprecalibrated = 0;
/*
* Dump core after a system crash.
*/
int
wddump(dev_t dev, daddr_t blkno, void *va, size_t size)
{
struct wd_softc *wd; /* disk unit to do the I/O */
struct disklabel *lp; /* disk's disklabel */
int part, err;
int nblks; /* total number of sectors left to write */
/* Check if recursive dump; if so, punt. */
if (wddoingadump)
return EFAULT;
wddoingadump = 1;
wd = device_lookup_private(&wd_cd, WDUNIT(dev));
if (wd == NULL)
return (ENXIO);
part = WDPART(dev);
/* Convert to disk sectors. Request must be a multiple of size. */
lp = wd->sc_dk.dk_label;
if ((size % lp->d_secsize) != 0)
return EFAULT;
nblks = size / lp->d_secsize;
blkno = blkno / (lp->d_secsize / DEV_BSIZE);
/* Check transfer bounds against partition size. */
if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size))
return EINVAL;
/* Offset block number to start of partition. */
blkno += lp->d_partitions[part].p_offset;
/* Recalibrate, if first dump transfer. */
if (wddumprecalibrated == 0) {
wddumprecalibrated = 1;
(*wd->atabus->ata_reset_drive)(wd->drvp,
AT_POLL | AT_RST_EMERG, NULL);
wd->drvp->state = RESET;
}
wd->sc_bp = NULL;
wd->sc_wdc_bio.blkno = blkno;
wd->sc_wdc_bio.flags = ATA_POLL;
if (wd->sc_flags & WDF_LBA48 &&
(wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28)
wd->sc_wdc_bio.flags |= ATA_LBA48;
if (wd->sc_flags & WDF_LBA)
wd->sc_wdc_bio.flags |= ATA_LBA;
wd->sc_wdc_bio.bcount = nblks * lp->d_secsize;
wd->sc_wdc_bio.databuf = va;
#ifndef WD_DUMP_NOT_TRUSTED
switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) {
case ATACMD_TRY_AGAIN:
panic("wddump: try again");
break;
case ATACMD_QUEUED:
panic("wddump: polled command has been queued");
break;
case ATACMD_COMPLETE:
break;
default:
panic("wddump: unknown atacmd code %d", err);
}
switch(err = wd->sc_wdc_bio.error) {
case TIMEOUT:
printf("wddump: device timed out");
err = EIO;
break;
case ERR_DF:
printf("wddump: drive fault");
err = EIO;
break;
case ERR_DMA:
printf("wddump: DMA error");
err = EIO;
break;
case ERROR:
printf("wddump: ");
wdperror(wd);
err = EIO;
break;
case NOERROR:
err = 0;
break;
default:
panic("wddump: unknown error type %d", err);
}
if (err != 0) {
printf("\n");
return err;
}
#else /* WD_DUMP_NOT_TRUSTED */
/* Let's just talk about this first... */
printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n",
unit, va, cylin, head, sector);
delay(500 * 1000); /* half a second */
#endif
wddoingadump = 0;
return 0;
}
#ifdef HAS_BAD144_HANDLING
/*
* Internalize the bad sector table.
*/
void
bad144intern(struct wd_softc *wd)
{
struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad;
struct disklabel *lp = wd->sc_dk.dk_label;
int i = 0;
ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS);
for (; i < NBT_BAD; i++) {
if (bt->bt_bad[i].bt_cyl == 0xffff)
break;
wd->sc_badsect[i] =
bt->bt_bad[i].bt_cyl * lp->d_secpercyl +
(bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors +
(bt->bt_bad[i].bt_trksec & 0xff);
}
for (; i < NBT_BAD+1; i++)
wd->sc_badsect[i] = -1;
}
#endif
static void
wd_params_to_properties(struct wd_softc *wd, struct ataparams *params)
{
prop_dictionary_t disk_info, odisk_info, geom;
const char *cp;
disk_info = prop_dictionary_create();
if (strcmp(wd->sc_params.atap_model, "ST506") == 0)
cp = "ST506";
else {
/* XXX Should have a case for ATA here, too. */
cp = "ESDI";
}
prop_dictionary_set_cstring_nocopy(disk_info, "type", cp);
geom = prop_dictionary_create();
prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity);
prop_dictionary_set_uint32(geom, "sector-size",
DEV_BSIZE /* XXX 512? */);
prop_dictionary_set_uint16(geom, "sectors-per-track",
wd->sc_params.atap_sectors);
prop_dictionary_set_uint16(geom, "tracks-per-cylinder",
wd->sc_params.atap_heads);
if (wd->sc_flags & WDF_LBA)
prop_dictionary_set_uint64(geom, "cylinders-per-unit",
wd->sc_capacity /
(wd->sc_params.atap_heads *
wd->sc_params.atap_sectors));
else
prop_dictionary_set_uint16(geom, "cylinders-per-unit",
wd->sc_params.atap_cylinders);
prop_dictionary_set(disk_info, "geometry", geom);
prop_object_release(geom);
prop_dictionary_set(device_properties(wd->sc_dev),
"disk-info", disk_info);
/*
* Don't release disk_info here; we keep a reference to it.
* disk_detach() will release it when we go away.
*/
odisk_info = wd->sc_dk.dk_info;
wd->sc_dk.dk_info = disk_info;
if (odisk_info)
prop_object_release(odisk_info);
}
int
wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params)
{
switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) {
case CMD_AGAIN:
return 1;
case CMD_ERR:
if (wd->drvp->drive_type != ATA_DRIVET_OLD)
return 1;
/*
* We `know' there's a drive here; just assume it's old.
* This geometry is only used to read the MBR and print a
* (false) attach message.
*/
strncpy(params->atap_model, "ST506",
sizeof params->atap_model);
params->atap_config = ATA_CFG_FIXED;
params->atap_cylinders = 1024;
params->atap_heads = 8;
params->atap_sectors = 17;
params->atap_multi = 1;
params->atap_capabilities1 = params->atap_capabilities2 = 0;
wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */
/* FALLTHROUGH */
case CMD_OK:
wd_params_to_properties(wd, params);
return 0;
default:
panic("wd_get_params: bad return code from ata_get_params");
/* NOTREACHED */
}
}
int
wd_getcache(struct wd_softc *wd, int *bitsp)
{
struct ataparams params;
if (wd_get_params(wd, AT_WAIT, &params) != 0)
return EIO;
if (params.atap_cmd_set1 == 0x0000 ||
params.atap_cmd_set1 == 0xffff ||
(params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) {
*bitsp = 0;
return 0;
}
*bitsp = DKCACHE_WCHANGE | DKCACHE_READ;
if (params.atap_cmd1_en & WDC_CMD1_CACHE)
*bitsp |= DKCACHE_WRITE;
return 0;
}
const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF";
int
wd_setcache(struct wd_softc *wd, int bits)
{
struct ataparams params;
struct ata_command ata_c;
if (wd_get_params(wd, AT_WAIT, &params) != 0)
return EIO;
if (params.atap_cmd_set1 == 0x0000 ||
params.atap_cmd_set1 == 0xffff ||
(params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0)
return EOPNOTSUPP;
if ((bits & DKCACHE_READ) == 0 ||
(bits & DKCACHE_SAVE) != 0)
return EOPNOTSUPP;
memset(&ata_c, 0, sizeof(struct ata_command));
ata_c.r_command = SET_FEATURES;
ata_c.r_st_bmask = 0;
ata_c.r_st_pmask = 0;
ata_c.timeout = 30000; /* 30s timeout */
ata_c.flags = AT_WAIT;
if (bits & DKCACHE_WRITE)
ata_c.r_features = WDSF_WRITE_CACHE_EN;
else
ata_c.r_features = WDSF_WRITE_CACHE_DS;
if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) {
aprint_error_dev(wd->sc_dev,
"wd_setcache command not complete\n");
return EIO;
}
if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {
char sbuf[sizeof(at_errbits) + 64];
snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags);
aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf);
return EIO;
}
return 0;
}
static int
wd_standby(struct wd_softc *wd, int flags)
{
struct ata_command ata_c;
memset(&ata_c, 0, sizeof(struct ata_command));
ata_c.r_command = WDCC_STANDBY_IMMED;
ata_c.r_st_bmask = WDCS_DRDY;
ata_c.r_st_pmask = WDCS_DRDY;
ata_c.flags = flags;
ata_c.timeout = 30000; /* 30s timeout */
if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) {
aprint_error_dev(wd->sc_dev,
"standby immediate command didn't complete\n");
return EIO;
}
if (ata_c.flags & AT_ERROR) {
if (ata_c.r_error == WDCE_ABRT) /* command not supported */
return ENODEV;
}
if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {
char sbuf[sizeof(at_errbits) + 64];
snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags);
aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf);
return EIO;
}
return 0;
}
int
wd_flushcache(struct wd_softc *wd, int flags)
{
struct ata_command ata_c;
/*
* WDCC_FLUSHCACHE is here since ATA-4, but some drives report
* only ATA-2 and still support it.
*/
if (wd->drvp->ata_vers < 4 &&
((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 ||
wd->sc_params.atap_cmd_set2 == 0xffff))
return ENODEV;
memset(&ata_c, 0, sizeof(struct ata_command));
if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 &&
(wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) {
ata_c.r_command = WDCC_FLUSHCACHE_EXT;
flags |= AT_LBA48;
} else
ata_c.r_command = WDCC_FLUSHCACHE;
ata_c.r_st_bmask = WDCS_DRDY;
ata_c.r_st_pmask = WDCS_DRDY;
ata_c.flags = flags | AT_READREG;
ata_c.timeout = 300000; /* 5m timeout */
if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) {
aprint_error_dev(wd->sc_dev,
"flush cache command didn't complete\n");
return EIO;
}
if (ata_c.flags & AT_ERROR) {
if (ata_c.r_error == WDCE_ABRT) /* command not supported */
return ENODEV;
}
if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {
char sbuf[sizeof(at_errbits) + 64];
snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags);
aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n",
sbuf);
return EIO;
}
return 0;
}
int
wd_trim(struct wd_softc *wd, int part, struct disk_discard_range *tr)
{
struct ata_command ata_c;
unsigned char *req;
daddr_t bno = tr->bno;
if (part != RAW_PART)
bno += wd->sc_dk.dk_label->d_partitions[part].p_offset;;
req = kmem_zalloc(512, KM_SLEEP);
req[0] = bno & 0xff;
req[1] = (bno >> 8) & 0xff;
req[2] = (bno >> 16) & 0xff;
req[3] = (bno >> 24) & 0xff;
req[4] = (bno >> 32) & 0xff;
req[5] = (bno >> 40) & 0xff;
req[6] = tr->size & 0xff;
req[7] = (tr->size >> 8) & 0xff;
memset(&ata_c, 0, sizeof(struct ata_command));
ata_c.r_command = ATA_DATA_SET_MANAGEMENT;
ata_c.r_count = 1;
ata_c.r_features = ATA_SUPPORT_DSM_TRIM;
ata_c.r_st_bmask = WDCS_DRDY;
ata_c.r_st_pmask = WDCS_DRDY;
ata_c.timeout = 30000; /* 30s timeout */
ata_c.data = req;
ata_c.bcount = 512;
ata_c.flags |= AT_WRITE | AT_WAIT;
if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) {
aprint_error_dev(wd->sc_dev,
"trim command didn't complete\n");
kmem_free(req, 512);
return EIO;
}
kmem_free(req, 512);
if (ata_c.flags & AT_ERROR) {
if (ata_c.r_error == WDCE_ABRT) /* command not supported */
return ENODEV;
}
if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {
char sbuf[sizeof(at_errbits) + 64];
snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags);
aprint_error_dev(wd->sc_dev, "wd_trim: status=%s\n",
sbuf);
return EIO;
}
return 0;
}
bool
wd_shutdown(device_t dev, int how)
{
struct wd_softc *wd = device_private(dev);
/* the adapter needs to be enabled */
if (wd->atabus->ata_addref(wd->drvp))
return true; /* no need to complain */
wd_flushcache(wd, AT_POLL);
if ((how & RB_POWERDOWN) == RB_POWERDOWN)
wd_standby(wd, AT_POLL);
return true;
}
/*
* Allocate space for a ioctl queue structure. Mostly taken from
* scsipi_ioctl.c
*/
struct wd_ioctl *
wi_get(void)
{
struct wd_ioctl *wi;
int s;
wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO);
buf_init(&wi->wi_bp);
s = splbio();
LIST_INSERT_HEAD(&wi_head, wi, wi_list);
splx(s);
return (wi);
}
/*
* Free an ioctl structure and remove it from our list
*/
void
wi_free(struct wd_ioctl *wi)
{
int s;
s = splbio();
LIST_REMOVE(wi, wi_list);
splx(s);
buf_destroy(&wi->wi_bp);
free(wi, M_TEMP);
}
/*
* Find a wd_ioctl structure based on the struct buf.
*/
struct wd_ioctl *
wi_find(struct buf *bp)
{
struct wd_ioctl *wi;
int s;
s = splbio();
for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next)
if (bp == &wi->wi_bp)
break;
splx(s);
return (wi);
}
/*
* Ioctl pseudo strategy routine
*
* This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What
* happens here is:
*
* - wdioctl() queues a wd_ioctl structure.
*
* - wdioctl() calls physio/wdioctlstrategy based on whether or not
* user space I/O is required. If physio() is called, physio() eventually
* calls wdioctlstrategy().
*
* - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command()
* to perform the actual command
*
* The reason for the use of the pseudo strategy routine is because
* when doing I/O to/from user space, physio _really_ wants to be in
* the loop. We could put the entire buffer into the ioctl request
* structure, but that won't scale if we want to do things like download
* microcode.
*/
void
wdioctlstrategy(struct buf *bp)
{
struct wd_ioctl *wi;
struct ata_command ata_c;
int error = 0;
wi = wi_find(bp);
if (wi == NULL) {
printf("wdioctlstrategy: "
"No matching ioctl request found in queue\n");
error = EINVAL;
goto bad;
}
memset(&ata_c, 0, sizeof(ata_c));
/*
* Abort if physio broke up the transfer
*/
if (bp->b_bcount != wi->wi_atareq.datalen) {
printf("physio split wd ioctl request... cannot proceed\n");
error = EIO;
goto bad;
}
/*
* Abort if we didn't get a buffer size that was a multiple of
* our sector size (or was larger than NBBY)
*/
if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 ||
(bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >=
(1 << NBBY)) {
error = EINVAL;
goto bad;
}
/*
* Make sure a timeout was supplied in the ioctl request
*/
if (wi->wi_atareq.timeout == 0) {
error = EINVAL;
goto bad;
}
if (wi->wi_atareq.flags & ATACMD_READ)
ata_c.flags |= AT_READ;
else if (wi->wi_atareq.flags & ATACMD_WRITE)
ata_c.flags |= AT_WRITE;
if (wi->wi_atareq.flags & ATACMD_READREG)
ata_c.flags |= AT_READREG;
if ((wi->wi_atareq.flags & ATACMD_LBA) != 0)
ata_c.flags |= AT_LBA;
ata_c.flags |= AT_WAIT;
ata_c.timeout = wi->wi_atareq.timeout;
ata_c.r_command = wi->wi_atareq.command;
ata_c.r_lba = ((wi->wi_atareq.head & 0x0f) << 24) |
(wi->wi_atareq.cylinder << 8) |
wi->wi_atareq.sec_num;
ata_c.r_count = wi->wi_atareq.sec_count;
ata_c.r_features = wi->wi_atareq.features;
ata_c.r_st_bmask = WDCS_DRDY;
ata_c.r_st_pmask = WDCS_DRDY;
ata_c.data = wi->wi_bp.b_data;
ata_c.bcount = wi->wi_bp.b_bcount;
if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c)
!= ATACMD_COMPLETE) {
wi->wi_atareq.retsts = ATACMD_ERROR;
goto bad;
}
if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {
if (ata_c.flags & AT_ERROR) {
wi->wi_atareq.retsts = ATACMD_ERROR;
wi->wi_atareq.error = ata_c.r_error;
} else if (ata_c.flags & AT_DF)
wi->wi_atareq.retsts = ATACMD_DF;
else
wi->wi_atareq.retsts = ATACMD_TIMEOUT;
} else {
wi->wi_atareq.retsts = ATACMD_OK;
if (wi->wi_atareq.flags & ATACMD_READREG) {
wi->wi_atareq.command = ata_c.r_status;
wi->wi_atareq.features = ata_c.r_error;
wi->wi_atareq.sec_count = ata_c.r_count;
wi->wi_atareq.sec_num = ata_c.r_lba & 0xff;
wi->wi_atareq.head = (ata_c.r_device & 0xf0) |
((ata_c.r_lba >> 24) & 0x0f);
wi->wi_atareq.cylinder = (ata_c.r_lba >> 8) & 0xffff;
wi->wi_atareq.error = ata_c.r_error;
}
}
bp->b_error = 0;
biodone(bp);
return;
bad:
bp->b_error = error;
bp->b_resid = bp->b_bcount;
biodone(bp);
}
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