File: [local] / sys / dev / ata / wd.c (download)
Revision 1.1, Tue Mar 4 16:14:50 2008 UTC (16 years, 1 month ago) by nbrk
Branch point for: MAIN
Initial revision
|
/* $OpenBSD: wd.c,v 1.66 2007/06/20 18:15:46 deraadt Exp $ */
/* $NetBSD: wd.c,v 1.193 1999/02/28 17:15:27 explorer 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Manuel Bouyer.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 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.
*/
#if 0
#include "rnd.h"
#endif
#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/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/vnode.h>
#include <uvm/uvm_extern.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <dev/ata/atareg.h>
#include <dev/ata/atavar.h>
#include <dev/ata/wdvar.h>
#include <dev/ic/wdcreg.h>
#include <dev/ic/wdcvar.h>
#if 0
#include "locators.h"
#endif
#define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */
#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 DEBUG_INTR 0x01
#define DEBUG_XFERS 0x02
#define DEBUG_STATUS 0x04
#define DEBUG_FUNCS 0x08
#define DEBUG_PROBE 0x10
#ifdef WDCDEBUG
extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */
#define WDCDEBUG_PRINT(args, level) do { \
if ((wdcdebug_wd_mask & (level)) != 0) \
printf args; \
} while (0)
#else
#define WDCDEBUG_PRINT(args, level)
#endif
struct wd_softc {
/* General disk infos */
struct device sc_dev;
struct disk sc_dk;
struct buf sc_q;
/* IDE disk soft states */
struct ata_bio sc_wdc_bio; /* current transfer */
struct buf *sc_bp; /* buf being transferred */
struct ata_drive_datas *drvp; /* Our controller's infos */
int openings;
struct ataparams sc_params;/* drive characteristics found */
int sc_flags;
#define WDF_LOCKED 0x01
#define WDF_WANTED 0x02
#define WDF_WLABEL 0x04 /* label is writable */
#define WDF_LABELLING 0x08 /* writing label */
/*
* XXX Nothing resets this yet, but disk change sensing will when ATA-4 is
* more fully implemented.
*/
#define WDF_LOADED 0x10 /* parameters loaded */
#define WDF_WAIT 0x20 /* waiting for resources */
#define WDF_LBA 0x40 /* using LBA mode */
#define WDF_LBA48 0x80 /* using 48-bit LBA mode */
u_int64_t sc_capacity;
int cyl; /* actual drive parameters */
int heads;
int sectors;
int retries; /* number of xfer retry */
struct timeout sc_restart_timeout;
void *sc_sdhook;
};
#define sc_drive sc_wdc_bio.drive
#define sc_mode sc_wdc_bio.mode
#define sc_multi sc_wdc_bio.multi
int wdprobe(struct device *, void *, void *);
void wdattach(struct device *, struct device *, void *);
int wddetach(struct device *, int);
int wdactivate(struct device *, enum devact);
int wdprint(void *, char *);
struct cfattach wd_ca = {
sizeof(struct wd_softc), wdprobe, wdattach,
wddetach, wdactivate
};
struct cfdriver wd_cd = {
NULL, "wd", DV_DISK
};
void wdgetdefaultlabel(struct wd_softc *, struct disklabel *);
void wdgetdisklabel(dev_t dev, struct wd_softc *, struct disklabel *, int);
void wdstrategy(struct buf *);
void wdstart(void *);
void __wdstart(struct wd_softc*, struct buf *);
void wdrestart(void *);
int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *);
void wd_flushcache(struct wd_softc *, int);
void wd_shutdown(void *);
struct dkdriver wddkdriver = { wdstrategy };
/* XXX: these should go elsewhere */
cdev_decl(wd);
bdev_decl(wd);
#define wdlock(wd) disk_lock(&(wd)->sc_dk)
#define wdunlock(wd) disk_unlock(&(wd)->sc_dk)
#define wdlookup(unit) (struct wd_softc *)device_lookup(&wd_cd, (unit))
int
wdprobe(struct device *parent, void *match_, void *aux)
{
struct ata_atapi_attach *aa_link = aux;
struct cfdata *match = match_;
if (aa_link == NULL)
return 0;
if (aa_link->aa_type != T_ATA)
return 0;
if (match->cf_loc[0] != -1 &&
match->cf_loc[0] != aa_link->aa_channel)
return 0;
if (match->cf_loc[1] != -1 &&
match->cf_loc[1] != aa_link->aa_drv_data->drive)
return 0;
return 1;
}
void
wdattach(struct device *parent, struct device *self, void *aux)
{
struct wd_softc *wd = (void *)self;
struct ata_atapi_attach *aa_link= aux;
struct wdc_command wdc_c;
int i, blank;
char buf[41], c, *p, *q;
WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE);
wd->openings = aa_link->aa_openings;
wd->drvp = aa_link->aa_drv_data;
strlcpy(wd->drvp->drive_name, wd->sc_dev.dv_xname,
sizeof(wd->drvp->drive_name));
wd->drvp->cf_flags = wd->sc_dev.dv_cfdata->cf_flags;
if ((NERRS_MAX - 2) > 0)
wd->drvp->n_dmaerrs = NERRS_MAX - 2;
else
wd->drvp->n_dmaerrs = 0;
/* read our drive info */
if (wd_get_params(wd, at_poll, &wd->sc_params) != 0) {
printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname);
return;
}
for (blank = 0, p = wd->sc_params.atap_model, q = buf, 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';
printf(": <%s>\n", buf);
wdc_probe_caps(wd->drvp, &wd->sc_params);
wdc_print_caps(wd->drvp);
if ((wd->sc_params.atap_multi & 0xff) > 1) {
wd->sc_multi = wd->sc_params.atap_multi & 0xff;
} else {
wd->sc_multi = 1;
}
printf("%s: %d-sector PIO,", wd->sc_dev.dv_xname, wd->sc_multi);
/* use 48-bit LBA if enabled */
/* XXX: shall we use it if drive capacity < 137Gb? */
if ((wd->sc_params.atap_cmd2_en & ATAPI_CMD2_48AD) != 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) {
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]);
printf(" LBA48, %lluMB, %llu sectors\n",
wd->sc_capacity / (1048576 / DEV_BSIZE),
wd->sc_capacity);
} else if ((wd->sc_flags & WDF_LBA) != 0) {
wd->sc_capacity =
(wd->sc_params.atap_capacity[1] << 16) |
wd->sc_params.atap_capacity[0];
printf(" LBA, %lluMB, %llu sectors\n",
wd->sc_capacity / (1048576 / DEV_BSIZE),
wd->sc_capacity);
} else {
wd->sc_capacity =
wd->sc_params.atap_cylinders *
wd->sc_params.atap_heads *
wd->sc_params.atap_sectors;
printf(" CHS, %lluMB, %d cyl, %d head, %d sec, %llu sectors\n",
wd->sc_capacity / (1048576 / DEV_BSIZE),
wd->sc_params.atap_cylinders,
wd->sc_params.atap_heads,
wd->sc_params.atap_sectors,
wd->sc_capacity);
}
WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n",
self->dv_xname, wd->sc_params.atap_dmatiming_mimi,
wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE);
/*
* FREEZE LOCK the drive so malicous users can't lock it on us.
* As there is no harm in issuing this to drives that don't
* support the security feature set we just send it, and don't
* bother checking if the drive sends a command abort to tell us it
* doesn't support it.
*/
bzero(&wdc_c, sizeof(struct wdc_command));
wdc_c.r_command = WDCC_SEC_FREEZE_LOCK;
wdc_c.timeout = 1000;
wdc_c.flags = at_poll;
if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) {
printf("%s: freeze lock command didn't complete\n",
wd->sc_dev.dv_xname);
}
/*
* Initialize and attach the disk structure.
*/
wd->sc_dk.dk_driver = &wddkdriver;
wd->sc_dk.dk_name = wd->sc_dev.dv_xname;
disk_attach(&wd->sc_dk);
wd->sc_wdc_bio.lp = wd->sc_dk.dk_label;
wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd);
if (wd->sc_sdhook == NULL)
printf("%s: WARNING: unable to establish shutdown hook\n",
wd->sc_dev.dv_xname);
timeout_set(&wd->sc_restart_timeout, wdrestart, wd);
}
int
wdactivate(struct device *self, enum devact act)
{
int rv = 0;
switch (act) {
case DVACT_ACTIVATE:
break;
case DVACT_DEACTIVATE:
/*
* Nothing to do; we key off the device's DVF_ACTIVATE.
*/
break;
}
return (rv);
}
int
wddetach(struct device *self, int flags)
{
struct wd_softc *sc = (struct wd_softc *)self;
struct buf *dp, *bp;
int s, bmaj, cmaj, mn;
/* Remove unprocessed buffers from queue */
s = splbio();
for (dp = &sc->sc_q; (bp = dp->b_actf) != NULL; ) {
dp->b_actf = bp->b_actf;
bp->b_error = ENXIO;
bp->b_flags |= B_ERROR;
biodone(bp);
}
splx(s);
/* Locate the lowest minor number to be detached. */
mn = DISKMINOR(self->dv_unit, 0);
for (bmaj = 0; bmaj < nblkdev; bmaj++)
if (bdevsw[bmaj].d_open == wdopen)
vdevgone(bmaj, mn, mn + MAXPARTITIONS - 1, VBLK);
for (cmaj = 0; cmaj < nchrdev; cmaj++)
if (cdevsw[cmaj].d_open == wdopen)
vdevgone(cmaj, mn, mn + MAXPARTITIONS - 1, VCHR);
/* Get rid of the shutdown hook. */
if (sc->sc_sdhook != NULL)
shutdownhook_disestablish(sc->sc_sdhook);
/* Detach disk. */
disk_detach(&sc->sc_dk);
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;
int s;
wd = wdlookup(DISKUNIT(bp->b_dev));
if (wd == NULL) {
bp->b_error = ENXIO;
goto bad;
}
WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname),
DEBUG_XFERS);
/* Valid request? */
if (bp->b_blkno < 0 ||
(bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 ||
(bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) {
bp->b_error = EINVAL;
goto bad;
}
/* If device invalidated (e.g. media change, door open), error. */
if ((wd->sc_flags & WDF_LOADED) == 0) {
bp->b_error = EIO;
goto bad;
}
/* 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 (DISKPART(bp->b_dev) != RAW_PART &&
bounds_check_with_label(bp, wd->sc_dk.dk_label,
(wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0)
goto done;
/* Queue transfer on drive, activate drive and controller if idle. */
s = splbio();
disksort(&wd->sc_q, bp);
wdstart(wd);
splx(s);
device_unref(&wd->sc_dev);
return;
bad:
bp->b_flags |= B_ERROR;
done:
/* Toss transfer; we're done early. */
bp->b_resid = bp->b_bcount;
s = splbio();
biodone(bp);
splx(s);
if (wd != NULL)
device_unref(&wd->sc_dev);
}
/*
* Queue a drive for I/O.
*/
void
wdstart(void *arg)
{
struct wd_softc *wd = arg;
struct buf *dp, *bp = NULL;
WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname),
DEBUG_XFERS);
while (wd->openings > 0) {
/* Is there a buf for us ? */
dp = &wd->sc_q;
if ((bp = dp->b_actf) == NULL) /* yes, an assign */
return;
dp->b_actf = bp->b_actf;
/*
* Make the command. First lock the device
*/
wd->openings--;
wd->retries = 0;
__wdstart(wd, bp);
}
}
void
__wdstart(struct wd_softc *wd, struct buf *bp)
{
daddr64_t nblks;
wd->sc_wdc_bio.blkno = bp->b_blkno +
DL_GETPOFFSET(&wd->sc_dk.dk_label->d_partitions[DISKPART(bp->b_dev)]);
wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE);
wd->sc_wdc_bio.blkdone =0;
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->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE)
wd->sc_wdc_bio.flags = ATA_SINGLE;
else
wd->sc_wdc_bio.flags = 0;
nblks = bp->b_bcount / wd->sc_dk.dk_label->d_secsize;
if ((wd->sc_flags & WDF_LBA48) &&
/* use LBA48 only if really need */
((wd->sc_wdc_bio.blkno + nblks - 1 > LBA48_THRESHOLD) ||
(nblks > 0xff)))
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;
wd->sc_wdc_bio.bcount = bp->b_bcount;
wd->sc_wdc_bio.databuf = bp->b_data;
wd->sc_wdc_bio.wd = wd;
/* Instrumentation. */
disk_busy(&wd->sc_dk);
switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) {
case WDC_TRY_AGAIN:
timeout_add(&wd->sc_restart_timeout, hz);
break;
case WDC_QUEUED:
break;
case WDC_COMPLETE:
/*
* This code is never executed because we never set
* the ATA_POLL flag above
*/
#if 0
if (wd->sc_wdc_bio.flags & ATA_POLL)
wddone(wd);
#endif
break;
default:
panic("__wdstart: bad return code from wdc_ata_bio()");
}
}
void
wddone(void *v)
{
struct wd_softc *wd = v;
struct buf *bp = wd->sc_bp;
char buf[256], *errbuf = buf;
WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname),
DEBUG_XFERS);
bp->b_resid = wd->sc_wdc_bio.bcount;
errbuf[0] = '\0';
switch (wd->sc_wdc_bio.error) {
case ERR_NODEV:
bp->b_flags |= B_ERROR;
bp->b_error = ENXIO;
break;
case ERR_DMA:
errbuf = "DMA error";
goto retry;
case ERR_DF:
errbuf = "device fault";
goto retry;
case TIMEOUT:
errbuf = "device timeout";
goto retry;
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;
ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf,
sizeof buf);
retry:
/* Just reset and retry. Can we do more ? */
wdc_reset_channel(wd->drvp);
diskerr(bp, "wd", errbuf, LOG_PRINTF,
wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label);
if (wd->retries++ < WDIORETRIES) {
printf(", retrying\n");
timeout_add(&wd->sc_restart_timeout, RECOVERYTIME);
return;
}
printf("\n");
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
break;
case NOERROR:
noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0)
printf("%s: soft error (corrected)\n",
wd->sc_dev.dv_xname);
}
disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid),
(bp->b_flags & B_READ));
biodone(bp);
wd->openings++;
wdstart(wd);
}
void
wdrestart(void *v)
{
struct wd_softc *wd = v;
struct buf *bp = wd->sc_bp;
int s;
WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname),
DEBUG_XFERS);
s = splbio();
disk_unbusy(&wd->sc_dk, 0, (bp->b_flags & B_READ));
__wdstart(v, bp);
splx(s);
}
int
wdread(dev_t dev, struct uio *uio, int flags)
{
WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS);
return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio));
}
int
wdwrite(dev_t dev, struct uio *uio, int flags)
{
WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS);
return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio));
}
int
wdopen(dev_t dev, int flag, int fmt, struct proc *p)
{
struct wd_softc *wd;
int unit, part;
int error;
WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS);
unit = DISKUNIT(dev);
wd = wdlookup(unit);
if (wd == NULL)
return ENXIO;
/*
* If this is the first open of this device, add a reference
* to the adapter.
*/
if ((error = wdlock(wd)) != 0)
goto bad4;
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 bad3;
}
} else {
if ((wd->sc_flags & WDF_LOADED) == 0) {
wd->sc_flags |= WDF_LOADED;
/* Load the physical device parameters. */
wd_get_params(wd, AT_WAIT, &wd->sc_params);
/* Load the partition info if not already loaded. */
wdgetdisklabel(dev, wd, wd->sc_dk.dk_label, 0);
}
}
part = DISKPART(dev);
/* 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 bad;
}
/* 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;
wdunlock(wd);
device_unref(&wd->sc_dev);
return 0;
bad:
if (wd->sc_dk.dk_openmask == 0) {
}
bad3:
wdunlock(wd);
bad4:
device_unref(&wd->sc_dev);
return error;
}
int
wdclose(dev_t dev, int flag, int fmt, struct proc *p)
{
struct wd_softc *wd;
int part = DISKPART(dev);
int error = 0;
wd = wdlookup(DISKUNIT(dev));
if (wd == NULL)
return ENXIO;
WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS);
if ((error = wdlock(wd)) != 0)
goto exit;
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) {
wd_flushcache(wd, 0);
/* XXXX Must wait for I/O to complete! */
}
wdunlock(wd);
exit:
device_unref(&wd->sc_dev);
return (error);
}
void
wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp)
{
WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS);
bzero(lp, sizeof(struct disklabel));
lp->d_secsize = DEV_BSIZE;
DL_SETDSIZE(lp, wd->sc_capacity);
lp->d_ntracks = wd->sc_params.atap_heads;
lp->d_nsectors = wd->sc_params.atap_sectors;
lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
lp->d_ncylinders = DL_GETDSIZE(lp) / lp->d_secpercyl;
if (wd->drvp->ata_vers == -1) {
lp->d_type = DTYPE_ST506;
strncpy(lp->d_typename, "ST506/MFM/RLL", sizeof lp->d_typename);
} else {
lp->d_type = DTYPE_ESDI;
strncpy(lp->d_typename, "ESDI/IDE disk", sizeof lp->d_typename);
}
/* XXX - user viscopy() like sd.c */
strncpy(lp->d_packname, wd->sc_params.atap_model, sizeof lp->d_packname);
lp->d_rpm = 3600;
lp->d_interleave = 1;
lp->d_flags = 0;
lp->d_version = 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(dev_t dev, struct wd_softc *wd, struct disklabel *lp,
int spoofonly)
{
char *errstring;
WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS);
wdgetdefaultlabel(wd, lp);
if (wd->drvp->state > RECAL)
wd->drvp->drive_flags |= DRIVE_RESET;
errstring = readdisklabel(DISKLABELDEV(dev), wdstrategy, lp,
spoofonly);
if (wd->drvp->state > RECAL)
wd->drvp->drive_flags |= DRIVE_RESET;
if (errstring) {
/*printf("%s: %s\n", wd->sc_dev.dv_xname, errstring);*/
}
}
int
wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p)
{
struct wd_softc *wd;
struct disklabel *lp;
int error = 0;
WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS);
wd = wdlookup(DISKUNIT(dev));
if (wd == NULL)
return ENXIO;
if ((wd->sc_flags & WDF_LOADED) == 0) {
error = EIO;
goto exit;
}
switch (xfer) {
case DIOCRLDINFO:
lp = malloc(sizeof(*lp), M_TEMP, M_WAITOK);
wdgetdisklabel(dev, wd, lp, 0);
bcopy(lp, wd->sc_dk.dk_label, sizeof(*lp));
free(lp, M_TEMP);
goto exit;
case DIOCGPDINFO:
wdgetdisklabel(dev, wd, (struct disklabel *)addr, 1);
goto exit;
case DIOCGDINFO:
*(struct disklabel *)addr = *(wd->sc_dk.dk_label);
goto exit;
case DIOCGPART:
((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label;
((struct partinfo *)addr)->part =
&wd->sc_dk.dk_label->d_partitions[DISKPART(dev)];
goto exit;
case DIOCWDINFO:
case DIOCSDINFO:
if ((flag & FWRITE) == 0) {
error = EBADF;
goto exit;
}
if ((error = wdlock(wd)) != 0)
goto exit;
wd->sc_flags |= WDF_LABELLING;
error = setdisklabel(wd->sc_dk.dk_label,
(struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0);
if (error == 0) {
if (wd->drvp->state > RECAL)
wd->drvp->drive_flags |= DRIVE_RESET;
if (xfer == DIOCWDINFO)
error = writedisklabel(DISKLABELDEV(dev),
wdstrategy, wd->sc_dk.dk_label);
}
wd->sc_flags &= ~WDF_LABELLING;
wdunlock(wd);
goto exit;
case DIOCWLABEL:
if ((flag & FWRITE) == 0) {
error = EBADF;
goto exit;
}
if (*(int *)addr)
wd->sc_flags |= WDF_WLABEL;
else
wd->sc_flags &= ~WDF_WLABEL;
goto exit;
#ifdef notyet
case DIOCWFORMAT:
if ((flag & FWRITE) == 0)
return EBADF;
{
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_segflg = 0;
auio.uio_offset =
fop->df_startblk * wd->sc_dk.dk_label->d_secsize;
auio.uio_procp = p;
error = physio(wdformat, NULL, dev, B_WRITE, minphys,
&auio);
fop->df_count -= auio.uio_resid;
fop->df_reg[0] = wdc->sc_status;
fop->df_reg[1] = wdc->sc_error;
goto exit;
}
#endif
default:
error = wdc_ioctl(wd->drvp, xfer, addr, flag, p);
goto exit;
}
#ifdef DIAGNOSTIC
panic("wdioctl: impossible");
#endif
exit:
device_unref(&wd->sc_dev);
return (error);
}
#ifdef B_FORMAT
int
wdformat(struct buf *bp)
{
bp->b_flags |= B_FORMAT;
return wdstrategy(bp);
}
#endif
daddr64_t
wdsize(dev_t dev)
{
struct wd_softc *wd;
int part, omask;
int64_t size;
WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS);
wd = wdlookup(DISKUNIT(dev));
if (wd == NULL)
return (-1);
part = DISKPART(dev);
omask = wd->sc_dk.dk_openmask & (1 << part);
if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) {
size = -1;
goto exit;
}
size = DL_GETPSIZE(&wd->sc_dk.dk_label->d_partitions[part]) *
(wd->sc_dk.dk_label->d_secsize / DEV_BSIZE);
if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0)
size = -1;
exit:
device_unref(&wd->sc_dev);
return (size);
}
/* #define WD_DUMP_NOT_TRUSTED if you just want to watch */
static int wddoingadump = 0;
static int wddumprecalibrated = 0;
static int wddumpmulti = 1;
/*
* Dump core after a system crash.
*/
int
wddump(dev_t dev, daddr64_t blkno, caddr_t va, size_t size)
{
struct wd_softc *wd; /* disk unit to do the I/O */
struct disklabel *lp; /* disk's disklabel */
int unit, part;
int nblks; /* total number of sectors left to write */
int err;
char errbuf[256];
/* Check if recursive dump; if so, punt. */
if (wddoingadump)
return EFAULT;
wddoingadump = 1;
unit = DISKUNIT(dev);
wd = wdlookup(unit);
if (wd == NULL)
return ENXIO;
part = DISKPART(dev);
/* Make sure it was initialized. */
if (wd->drvp->state < READY)
return ENXIO;
/* 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) > DL_GETPSIZE(&lp->d_partitions[part])))
return EINVAL;
/* Offset block number to start of partition. */
blkno += DL_GETPOFFSET(&lp->d_partitions[part]);
/* Recalibrate, if first dump transfer. */
if (wddumprecalibrated == 0) {
wddumpmulti = wd->sc_multi;
wddumprecalibrated = 1;
wd->drvp->state = RECAL;
}
while (nblks > 0) {
again:
wd->sc_wdc_bio.blkno = blkno;
wd->sc_wdc_bio.flags = ATA_POLL;
if (wddumpmulti == 1)
wd->sc_wdc_bio.flags |= ATA_SINGLE;
if (wd->sc_flags & WDF_LBA48)
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 =
min(nblks, wddumpmulti) * lp->d_secsize;
wd->sc_wdc_bio.databuf = va;
wd->sc_wdc_bio.wd = wd;
#ifndef WD_DUMP_NOT_TRUSTED
switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) {
case WDC_TRY_AGAIN:
panic("wddump: try again");
break;
case WDC_QUEUED:
panic("wddump: polled command has been queued");
break;
case WDC_COMPLETE:
break;
}
switch(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:
errbuf[0] = '\0';
ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf,
sizeof errbuf);
printf("wddump: %s", errbuf);
err = EIO;
break;
case NOERROR:
err = 0;
break;
default:
panic("wddump: unknown error type");
}
if (err != 0) {
if (wddumpmulti != 1) {
wddumpmulti = 1; /* retry in single-sector */
printf(", retrying\n");
goto again;
}
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
/* update block count */
nblks -= min(nblks, wddumpmulti);
blkno += min(nblks, wddumpmulti);
va += min(nblks, wddumpmulti) * lp->d_secsize;
}
wddoingadump = 0;
return 0;
}
int
wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params)
{
switch (ata_get_params(wd->drvp, flags, params)) {
case CMD_AGAIN:
return 1;
case CMD_ERR:
/* If we already have drive parameters, reuse them. */
if (wd->sc_params.atap_cylinders != 0) {
if (params != &wd->sc_params)
bcopy(&wd->sc_params, params,
sizeof(struct ataparams));
return 0;
}
/*
* 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.
*/
bzero(params, sizeof(struct ataparams));
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 */
return 0;
case CMD_OK:
return 0;
default:
panic("wd_get_params: bad return code from ata_get_params");
/* NOTREACHED */
}
}
void
wd_flushcache(struct wd_softc *wd, int flags)
{
struct wdc_command wdc_c;
if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */
return;
bzero(&wdc_c, sizeof(struct wdc_command));
wdc_c.r_command = (wd->sc_flags & WDF_LBA48 ? WDCC_FLUSHCACHE_EXT :
WDCC_FLUSHCACHE);
wdc_c.r_st_bmask = WDCS_DRDY;
wdc_c.r_st_pmask = WDCS_DRDY;
if (flags != 0) {
wdc_c.flags = AT_POLL;
} else {
wdc_c.flags = AT_WAIT;
}
wdc_c.timeout = 30000; /* 30s timeout */
if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) {
printf("%s: flush cache command didn't complete\n",
wd->sc_dev.dv_xname);
}
if (wdc_c.flags & AT_TIMEOU) {
printf("%s: flush cache command timeout\n",
wd->sc_dev.dv_xname);
}
if (wdc_c.flags & AT_DF) {
printf("%s: flush cache command: drive fault\n",
wd->sc_dev.dv_xname);
}
/*
* Ignore error register, it shouldn't report anything else
* than COMMAND ABORTED, which means the device doesn't support
* flush cache
*/
}
void
wd_shutdown(void *arg)
{
struct wd_softc *wd = arg;
wd_flushcache(wd, AT_POLL);
}
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