Obsoleted by CAM.

1 files changed, 0 insertions, 1065 deletions

diff --git a/sys/scsi/sd.c b/sys/scsi/sd.c
deleted file mode 100644
index 56aa859..0000000
--- a/sys/scsi/sd.c
+++ /dev/null
@@ -1,1065 +0,0 @@
-/*
- * Written by Julian Elischer (julian@dialix.oz.au)
- * for TRW Financial Systems for use under the MACH(2.5) operating system.
- *
- * TRW Financial Systems, in accordance with their agreement with Carnegie
- * Mellon University, makes this software available to CMU to distribute
- * or use in any manner that they see fit as long as this message is kept with
- * the software. For this reason TFS also grants any other persons or
- * organisations permission to use or modify this software.
- *
- * TFS supplies this software to be publicly redistributed
- * on the understanding that TFS is not responsible for the correct
- * functioning of this software in any circumstances.
- *
- * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
- *
- *      $Id: sd.c,v 1.139 1998/08/23 20:16:35 phk Exp $
- */
-
-#include "opt_bounce.h"
-#include "opt_devfs.h"
-#include "opt_hw_wdog.h"
-#include "opt_scsi.h"
-
-#define SPLSD splbio
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/dkbad.h>
-#include <sys/systm.h>
-#include <sys/buf.h>
-#include <sys/disklabel.h>
-#include <sys/diskslice.h>
-#include <sys/dkstat.h>
-#include <sys/conf.h>
-#ifdef DEVFS
-#include <sys/devfsext.h>
-#endif	/* DEVFS */
-
-#include <scsi/scsi_disk.h>
-#include <scsi/scsiconf.h>
-#include <scsi/scsi_debug.h>
-#include <scsi/scsi_driver.h>
-
-#include <vm/vm.h>
-#include <vm/vm_prot.h>
-#include <vm/pmap.h>
-#include <machine/md_var.h>
-#include <i386/i386/cons.h>		/* XXX *//* for aborting dump */
-#ifdef PC98
-#include <pc98/pc98/pc98_machdep.h>
-#endif
-
-#include "ioconf.h"
-
-static u_int32_t sdstrats, sdqueues;
-
-#define SECSIZE 512
-#ifdef PC98
-#define	SDOUTSTANDING	2
-#else
-#define	SDOUTSTANDING	4
-#endif
-#define	SD_RETRIES	4
-#define	MAXTRANSFER	8		/* 1 page at a time */
-
-#define	PARTITION(dev)	dkpart(dev)
-#define	SDUNIT(dev)	dkunit(dev)
-
-/* XXX introduce a dkmodunit() macro for this. */
-#define SDSETUNIT(DEV, U) \
- makedev(major(DEV), dkmakeminor((U), dkslice(DEV), dkpart(DEV)))
-
-static errval	sd_get_parms __P((int unit, int flags));
-#if 0
-static errval	sd_reassign_blocks __P((int unit, int block));
-#endif
-static int sd_size(int unit, u_int32_t *sizep, u_int16_t *secsizep,  int flags);
-static	void	sdstrategy1 __P((struct buf *));
-
-static int		sd_sense_handler __P((struct scsi_xfer *));
-static void    sdstart __P((u_int32_t, u_int32_t));
-
-struct scsi_data {
-	u_int32_t flags;
-#define	SDINIT		0x04	/* device has been init'd */
-	struct disk_parms {
-		u_char		heads;		/* Number of heads */
-		u_int16_t	cyls;		/* Number of cylinders */
-		u_char		sectors;/*XXX*/	/* Number of sectors/track */
-		u_int16_t	secsiz;		/* Number of bytes/sector */
-		u_int32_t	disksize;	/* total number sectors */
-	} params;
-	struct diskslices	*dk_slices;	/* virtual drives */
-	struct buf_queue_head	buf_queue;
-	int			dkunit;		/* disk stats unit number */
-#ifdef	DEVFS
-	void			*b_devfs_token;
-	void			*c_devfs_token;
-	void			*ctl_devfs_token;
-#endif
-};
-
-
-static int sdunit(dev_t dev) { return SDUNIT(dev); }
-static dev_t sdsetunit(dev_t dev, int unit) { return SDSETUNIT(dev, unit); }
-static errval sd_open __P((dev_t dev, int mode, int fmt, struct proc *p,
-			struct scsi_link *sc_link));
-static errval sd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int flag,
-			struct proc *p, struct scsi_link *sc_link);
-static errval sd_close __P((dev_t dev, int flag, int fmt, struct proc *p,
-			struct scsi_link *sc_link));
-static void sd_strategy(struct buf *bp, struct scsi_link *sc_link);
-
-static	d_open_t	sdopen;
-static	d_read_t	sdread;
-static	d_write_t	sdwrite;
-static	d_close_t	sdclose;
-static	d_ioctl_t	sdioctl;
-static	d_dump_t	sddump;
-static	d_psize_t	sdsize;
-static	d_strategy_t	sdstrategy;
-
-#define CDEV_MAJOR 13
-#define BDEV_MAJOR 4
-
-static struct cdevsw sd_cdevsw = {
-	  sdopen,	sdclose,	sdread,		sdwrite,
-	  sdioctl,	nostop,		nullreset,	nodevtotty,
-	  seltrue,	nommap,		sdstrategy,	"sd",
-	  NULL,		-1,		sddump,		sdsize,
-	  D_DISK,	0,		-1 };
-
-
-
-
-SCSI_DEVICE_ENTRIES(sd)
-
-static struct scsi_device sd_switch =
-{
-	sd_sense_handler,
-	sdstart,			/* have a queue, served by this */
-	NULL,			/* have no async handler */
-	NULL,			/* Use default 'done' routine */
-	"sd",
-	0,
-	{0, 0},
-	0,				/* Link flags */
-	sdattach,
-	"Direct-Access",
-	sdopen,
-	sizeof(struct scsi_data),
-	T_DIRECT,
-	sdunit,
-	sdsetunit,
-	sd_open,
-	sd_ioctl,
-	sd_close,
-	sd_strategy,
-};
-static struct scsi_xfer sx;
-
-
-static __inline void
-sd_registerdev(int unit)
-{
-	if(dk_ndrive < DK_NDRIVE) {
-		sprintf(dk_names[dk_ndrive], "sd%d", unit);
-		dk_wpms[dk_ndrive] = (8*1024*1024/2);
-		SCSI_DATA(&sd_switch, unit)->dkunit = dk_ndrive++;
-	} else {
-		SCSI_DATA(&sd_switch, unit)->dkunit = -1;
-	}
-}
-
-
-/*
- * The routine called by the low level scsi routine when it discovers
- * a device suitable for this driver.
- */
-static errval
-sdattach(struct scsi_link *sc_link)
-{
-	u_int32_t unit;
-	struct disk_parms *dp;
-#ifdef DEVFS
-	int	mynor;
-#endif
-
-	struct scsi_data *sd = sc_link->sd;
-
-	unit = sc_link->dev_unit;
-
-	dp = &(sd->params);
-
-	if (sc_link->opennings > SDOUTSTANDING)
-		sc_link->opennings = SDOUTSTANDING;
-
-	bufq_init(&sd->buf_queue);
-	/*
-	 * In case it is a funny one, tell it to start
-	 * not needed for  most hard drives (ignore failure)
-	 */
-	scsi_start_unit(sc_link,
-			SCSI_ERR_OK | SCSI_SILENT | SCSI_NOSLEEP | SCSI_NOMASK);
-	/*
-	 * Use the subdriver to request information regarding
-	 * the drive. We cannot use interrupts yet, so the
-	 * request must specify this. This may fail with removable media.
-	 */
-	if (sd_get_parms(unit, SCSI_NOSLEEP | SCSI_NOMASK) == 0) {
-		/*
-		 * if we don't have actual parameters, assume 512 bytes/sec
-		 * (could happen on removable media - MOD)
-		 * -- this avoids the division below from falling over
-	 	 */
-		printf("%luMB (%lu %u byte sectors)",
-		    (u_long)(dp->disksize / ((1024L * 1024L) / dp->secsiz)),
-		    (u_long)dp->disksize, dp->secsiz);
-
-#ifndef SCSI_REPORT_GEOMETRY
-		if ( (sc_link->flags & SDEV_BOOTVERBOSE) )
-#endif
-		{
-			sc_print_addr(sc_link);
-			printf("with %d cyls, %d heads, and an average %d sectors/track",
-	   		dp->cyls, dp->heads, dp->sectors);
-		}
-	} else {
-		printf("Media parameters not available");
-	}
-	sd->flags |= SDINIT;
-	sd_registerdev(unit);
-
-#ifdef DEVFS
-	mynor = dkmakeminor(unit, WHOLE_DISK_SLICE, RAW_PART);
-	sd->b_devfs_token = devfs_add_devswf(&sd_cdevsw, mynor, DV_BLK,
-					     UID_ROOT, GID_OPERATOR, 0640,
-					     "sd%d", unit);
-	sd->c_devfs_token = devfs_add_devswf(&sd_cdevsw, mynor, DV_CHR,
-					     UID_ROOT, GID_OPERATOR, 0640,
-					     "rsd%d", unit);
-	mynor = dkmakeminor(unit, 0, 0);	/* XXX */
-	sd->ctl_devfs_token = devfs_add_devswf(&sd_cdevsw,
-					       mynor | SCSI_CONTROL_MASK,
-					       DV_CHR,
-					       UID_ROOT, GID_WHEEL, 0600,
-					       "rsd%d.ctl", unit);
-#endif
-	return 0;
-}
-
-
-/*
- * open the device. Make sure the partition info is a up-to-date as can be.
- */
-static errval
-sd_open(dev_t dev, int mode, int fmt, struct proc *p, struct scsi_link *sc_link)
-{
-	errval  errcode = 0;
-	u_int32_t unit;
-	struct disklabel label;
-	struct scsi_data *sd;
-
-	unit = SDUNIT(dev);
-	sd = sc_link->sd;
-
-	/*
-	 * Make sure the disk has been initialised
-	 * At some point in the future, get the scsi driver
-	 * to look for a new device if we are not initted
-	 */
-	if ((!sd) || (!(sd->flags & SDINIT))) {
-		return (ENXIO);
-	}
-
-	SC_DEBUG(sc_link, SDEV_DB1,
-	    ("sd_open: dev=0x%lx (unit %lu, partition %d)\n",
-		(u_long)dev, (u_long)unit, PARTITION(dev)));
-
-	/*
-	 * "unit attention" errors should occur here if the
-	 * drive has been restarted or the pack changed.
-	 * just ingnore the result, it's a decoy instruction
-	 * The error handlers will act on the error though
-	 * and invalidate any media information we had.
-	 */
-	scsi_test_unit_ready(sc_link, 0);
-
-	errcode = scsi_device_lock(sc_link);
-	if (errcode)
-		return errcode;
-
-	/*
-	 * If it's been invalidated, then forget the label
-	 */
-	sc_link->flags |= SDEV_OPEN;	/* unit attn becomes an err now */
-	if (!(sc_link->flags & SDEV_MEDIA_LOADED) && sd->dk_slices != NULL) {
-		/*
-		 * If somebody still has it open, then forbid re-entry.
-		 */
-		if (dsisopen(sd->dk_slices)) {
-			errcode = ENXIO;
-			goto close;
-		}
-
-		dsgone(&sd->dk_slices);
-	}
-
-	/*
-	 * Check that it is still responding and ok.
-	 */
-	if (scsi_test_unit_ready(sc_link, 0)) {
-		SC_DEBUG(sc_link, SDEV_DB3, ("device not reponding\n"));
-		errcode = ENXIO;
-		goto close;
-	}
-	SC_DEBUG(sc_link, SDEV_DB3, ("device ok\n"));
-
-	/*
-	 * Load the physical device parameters
-	 */
-	if(errcode = sd_get_parms(unit, 0))	/* sets SDEV_MEDIA_LOADED */
-		goto close;
-
-	SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded "));
-
-	/* Lock the pack in. */
-	scsi_prevent(sc_link, PR_PREVENT, SCSI_ERR_OK | SCSI_SILENT);
-
-	/* Build label for whole disk. */
-	bzero(&label, sizeof label);
-	label.d_type = DTYPE_SCSI;
-	label.d_secsize = sd->params.secsiz;
-	label.d_nsectors = sd->params.sectors;
-	label.d_ntracks = sd->params.heads;
-	label.d_ncylinders = sd->params.cyls;
-	label.d_secpercyl = sd->params.heads * sd->params.sectors;
-	if (label.d_secpercyl == 0)
-		label.d_secpercyl = 100;
-		/* XXX as long as it's not 0 - readdisklabel divides by it (?) */
-	label.d_secperunit = sd->params.disksize;
-
-	/* Initialize slice tables. */
-	errcode = dsopen("sd", dev, fmt, 0, &sd->dk_slices, &label, sdstrategy1,
-			 (ds_setgeom_t *)NULL, &sd_cdevsw);
-	if (errcode != 0)
-		goto close;
-	SC_DEBUG(sc_link, SDEV_DB3, ("Slice tables initialized "));
-
-	SC_DEBUG(sc_link, SDEV_DB3, ("open %lu %lu\n",
-	    (u_long)sdstrats, (u_long)sdqueues));
-
-	scsi_device_unlock(sc_link);
-	return 0;
-
-close:
-	if (!dsisopen(sd->dk_slices))
-	{
-		scsi_prevent(sc_link, PR_ALLOW, SCSI_ERR_OK | SCSI_SILENT);
-		sc_link->flags &= ~SDEV_OPEN;
-	}
-	scsi_device_unlock(sc_link);
-	return errcode;
-}
-
-/*
- * close the device.. only called if we are the LAST occurence of an open
- * device.  Convenient now but usually a pain.
- */
-static errval
-sd_close(dev_t dev,int mode, int fmt, struct proc *p, struct scsi_link *sc_link)
-{
-	struct scsi_data *sd;
-	errval errcode;
-
-	sd = sc_link->sd;
-	errcode = scsi_device_lock(sc_link);
-	if (errcode)
-		return errcode;
-	dsclose(dev, fmt, sd->dk_slices);
-	if (!dsisopen(sd->dk_slices)) {
-		scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT | SCSI_ERR_OK);
-		sc_link->flags &= ~SDEV_OPEN;
-	}
-	scsi_device_unlock(sc_link);
-	return (0);
-}
-
-static int
-sdread(dev_t dev, struct uio *uio, int ioflag)
-{
-	return (physio(sdstrategy, NULL, dev, 1, minphys, uio));
-}
-
-static int
-sdwrite(dev_t dev, struct uio *uio, int ioflag)
-{
-	return (physio(sdstrategy, NULL, dev, 0, minphys, uio));
-}
-
-/*
- * Actually translate the requested transfer into one the physical driver
- * can understand.  The transfer is described by a buf and will include
- * only one physical transfer.
- */
-static void
-sd_strategy(struct buf *bp, struct scsi_link *sc_link)
-{
-	u_int32_t opri;
-	struct scsi_data *sd;
-	u_int32_t unit;
-
-	sdstrats++;
-	unit = SDUNIT((bp->b_dev));
-	sd = sc_link->sd;
-	/*
-	 * If the device has been made invalid, error out
-	 */
-	if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
-		bp->b_error = EIO;
-		goto bad;
-	}
-
-	/*
-	 * check it's not too big a transfer for our adapter
-	 */
-        scsi_minphys(bp,&sd_switch);
-
-	/*
-	 * Do bounds checking, adjust transfer, and set b_pbklno.
-	 */
-	if (dscheck(bp, sd->dk_slices) <= 0)
-		goto done;	/* XXX check b_resid */
-
-	opri = SPLSD();
-	/*
-	 * Use a bounce buffer if necessary
-	 */
-#ifdef BOUNCE_BUFFERS
-	if (sc_link->flags & SDEV_BOUNCE)
-		vm_bounce_alloc(bp);
-#endif
-
-	/*
-	 * Place it in the queue of disk activities for this disk
-	 */
-#ifdef SDDISKSORT
-	bufq_disksort(&sd->buf_queue, bp);
-#else
-	bufq_insert_tail(&sd->buf_queue, bp);
-#endif
-
-	/*
-	 * Tell the device to get going on the transfer if it's
-	 * not doing anything, otherwise just wait for completion
-	 */
-	sdstart(unit, 0);
-
-	splx(opri);
-	return /*0*/;
-bad:
-	bp->b_flags |= B_ERROR;
-done:
-
-	/*
-	 * Correctly set the buf to indicate a completed xfer
-	 */
-	bp->b_resid = bp->b_bcount;
-	biodone(bp);
-	return /*0*/;
-}
-
-static void
-sdstrategy1(struct buf *bp)
-{
-	/*
-	 * XXX - do something to make sdstrategy() but not this block while
-	 * we're doing dsinit() and dsioctl().
-	 */
-	sdstrategy(bp);
-}
-
-/*
- * sdstart looks to see if there is a buf waiting for the device
- * and that the device is not already busy. If both are true,
- * It dequeues the buf and creates a scsi command to perform the
- * transfer in the buf. The transfer request will call scsi_done
- * on completion, which will in turn call this routine again
- * so that the next queued transfer is performed.
- * The bufs are queued by the strategy routine (sdstrategy)
- *
- * This routine is also called after other non-queued requests
- * have been made of the scsi driver, to ensure that the queue
- * continues to be drained.
- *
- * must be called at the correct (highish) spl level
- * sdstart() is called at SPLSD  from sdstrategy and scsi_done
- */
-static void
-sdstart(u_int32_t unit, u_int32_t flags)
-{
-	register struct	scsi_link *sc_link = SCSI_LINK(&sd_switch, unit);
-	register struct scsi_data *sd = sc_link->sd;
-	struct buf *bp = NULL;
-	struct scsi_rw_big cmd;
-	u_int32_t blkno, nblk, secsize;
-
-	SC_DEBUG(sc_link, SDEV_DB2, ("sdstart "));
-	/*
-	 * Check if the device has room for another command
-	 */
-	while (sc_link->opennings) {
-
-		/*
-		 * there is excess capacity, but a special waits
-		 * It'll need the adapter as soon as we clear out of the
-		 * way and let it run (user level wait).
-		 */
-		if (sc_link->flags & SDEV_WAITING) {
-			return;
-		}
-		/*
-		 * See if there is a buf with work for us to do..
-		 */
-		bp = bufq_first(&sd->buf_queue);
-		if (bp == NULL) {	/* yes, an assign */
-			return;
-		}
-		bufq_remove(&sd->buf_queue, bp);
-
-		/*
-		 *  If the device has become invalid, abort all the
-		 * reads and writes until all files have been closed and
-		 * re-openned
-		 */
-		if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
-			goto bad;
-		}
-		/*
-		 * We have a buf, now we know we are going to go through
-		 * With this thing..
-		 */
-		secsize = sd->params.secsiz;
-		blkno = bp->b_pblkno;
-		if (bp->b_bcount & (secsize - 1))
-		{
-		    goto bad;
-		}
-		nblk = bp->b_bcount / secsize;
-
-		/*
-		 *  Fill out the scsi command
-		 */
-		cmd.op_code = (bp->b_flags & B_READ)
-		    ? READ_BIG : WRITE_BIG;
-		cmd.addr_3 = (blkno & 0xff000000UL) >> 24;
-		cmd.addr_2 = (blkno & 0xff0000) >> 16;
-		cmd.addr_1 = (blkno & 0xff00) >> 8;
-		cmd.addr_0 = blkno & 0xff;
-		cmd.length2 = (nblk & 0xff00) >> 8;
-		cmd.length1 = (nblk & 0xff);
-		cmd.byte2 = cmd.reserved = cmd.control = 0;
-		/*
-		 * Call the routine that chats with the adapter.
-		 * Note: we cannot sleep as we may be an interrupt
-		 */
-		if (scsi_scsi_cmd(sc_link,
-			(struct scsi_generic *) &cmd,
-			sizeof(cmd),
-			(u_char *) bp->b_data,
-			bp->b_bcount,
-			SD_RETRIES,
-			10000,
-			bp,
-			flags | ((bp->b_flags & B_READ) ?
-			    SCSI_DATA_IN : SCSI_DATA_OUT))
-		    == SUCCESSFULLY_QUEUED) {
-			sdqueues++;
-			if(sd->dkunit >= 0) {
-				dk_xfer[sd->dkunit]++;
-				dk_seek[sd->dkunit]++; /* don't know */
-				dk_wds[sd->dkunit] += bp->b_bcount >> 6;
-			}
-		} else {
-bad:
-			printf("sd%lu: oops not queued\n", (u_long)unit);
-			bp->b_error = EIO;
-			bp->b_flags |= B_ERROR;
-			biodone(bp);
-		}
-	}
-}
-
-/*
- * Perform special action on behalf of the user
- * Knows about the internals of this device
- */
-static errval
-sd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p,
-	 struct scsi_link *sc_link)
-{
-	errval  error;
-	struct scsi_data *sd = sc_link->sd;
-	SC_DEBUG(sc_link, SDEV_DB1, ("sdioctl (0x%lx)", cmd));
-
-#if 0
-	/* Wait until we have exclusive access to the device. */
-	/* XXX this is how wd does it.  How did we work without this? */
-	sdsleep(du->dk_ctrlr, "wdioct");
-#endif
-
-	/*
-	 * If the device is not valid.. abandon ship
-	 */
-	if (!(sc_link->flags & SDEV_MEDIA_LOADED))
-		return (EIO);
-
-	if (cmd == DIOCSBAD)
-		return (EINVAL);	/* XXX */
-	
-	error = scsi_device_lock(sc_link);
-	if (error)
-		return error;
-	error = dsioctl("sd", dev, cmd, addr, flag, &sd->dk_slices,
-			sdstrategy1, (ds_setgeom_t *)NULL);
-	scsi_device_unlock(sc_link);
-	if (error != ENOIOCTL)
-		return (error);
-	if (PARTITION(dev) != RAW_PART)
-		return (ENOTTY);
-	return (scsi_do_ioctl(dev, cmd, addr, flag, p, sc_link));
-}
-
-/*
- * Find out from the device what its capacity is. It turns
- * out this is also the best way to find out the sector size.
- */
-static int
-sd_size(int unit, u_int32_t *sizep, u_int16_t *secsizep,  int flags)
-{
-	struct scsi_read_cap_data rdcap;
-	struct scsi_read_capacity scsi_cmd;
-	u_int32_t size;
-	u_int32_t secsize;
-	struct scsi_link *sc_link = SCSI_LINK(&sd_switch, unit);
-
-	/*
-	 * make up a scsi command and ask the scsi driver to do
-	 * it for you.
-	 */
-	bzero(&scsi_cmd, sizeof(scsi_cmd));
-	scsi_cmd.op_code = READ_CAPACITY;
-
-	/*
-	 * If the command works, interpret the result as a 4 byte
-	 * number of blocks
-	 */
-	if (scsi_scsi_cmd(sc_link,
-		(struct scsi_generic *) &scsi_cmd,
-		sizeof(scsi_cmd),
-		(u_char *) & rdcap,
-		sizeof(rdcap),
-		SD_RETRIES,
-		2000,
-		NULL,
-		flags | SCSI_DATA_IN) != 0) {
-		printf("sd%d: could not get size\n", unit);
-		return (ENXIO);
-	}
-	size = rdcap.addr_0 + 1;
-	size += rdcap.addr_1 << 8;
-	size += rdcap.addr_2 << 16;
-	size += rdcap.addr_3 << 24;
-	secsize = rdcap.length_0;
-	secsize += rdcap.length_1 << 8;
-	secsize += rdcap.length_2 << 16;
-	secsize += rdcap.length_3 << 24;
-	*secsizep = secsize;
-	*sizep = size;
-	return (0);
-}
-
-#if 0
-/*
- * Tell the device to map out a defective block
- */
-static errval
-sd_reassign_blocks(unit, block)
-	int	unit, block;
-{
-	struct scsi_reassign_blocks scsi_cmd;
-	struct scsi_reassign_blocks_data rbdata;
-	struct scsi_link *sc_link = SCSI_LINK(&sd_switch, unit);
-
-	bzero(&scsi_cmd, sizeof(scsi_cmd));
-	bzero(&rbdata, sizeof(rbdata));
-	scsi_cmd.op_code = REASSIGN_BLOCKS;
-
-	rbdata.length_msb = 0;
-	rbdata.length_lsb = sizeof(rbdata.defect_descriptor[0]);
-	rbdata.defect_descriptor[0].dlbaddr_3 = ((block >> 24) & 0xff);
-	rbdata.defect_descriptor[0].dlbaddr_2 = ((block >> 16) & 0xff);
-	rbdata.defect_descriptor[0].dlbaddr_1 = ((block >> 8) & 0xff);
-	rbdata.defect_descriptor[0].dlbaddr_0 = ((block) & 0xff);
-
-	return (scsi_scsi_cmd(sc_link,
-		(struct scsi_generic *) &scsi_cmd,
-		sizeof(scsi_cmd),
-		(u_char *) & rbdata,
-		sizeof(rbdata),
-		SD_RETRIES,
-		5000,
-		NULL,
-		SCSI_DATA_OUT));
-}
-#endif
-
-#define b2tol(a)	(((unsigned)(a##_1) << 8) + (unsigned)a##_0 )
-
-/*
- * Get the scsi driver to send a full inquiry to the
- * device and use the results to fill out the disk
- * parameter structure.
- * Even if we get an error, complete with some dummy information.
- * XXX this is backwards. The read_cap (sd_size()) should be done first.
- */
-static errval
-sd_get_parms(int unit, int flags)
-{
-	struct scsi_link *sc_link = SCSI_LINK(&sd_switch, unit);
-	struct scsi_data *sd = sc_link->sd;
-	struct disk_parms *disk_parms = &sd->params;
-	struct scsi_mode_sense scsi_cmd;
-	struct scsi_mode_sense_data {
-		struct scsi_mode_header header;
-		struct blk_desc blk_desc;
-		union disk_pages pages;
-	} scsi_sense;
-	u_int32_t sectors;
-	int error = 0;
-
-	/*
-	 * First check if we have it all loaded
-	 */
-	if (sc_link->flags & SDEV_MEDIA_LOADED)
-		return 0;
-
-	/*
-	 * do a "mode sense page 4"
-	 */
-	bzero(&scsi_cmd, sizeof(scsi_cmd));
-	scsi_cmd.op_code = MODE_SENSE;
-	scsi_cmd.page = 4;
-	scsi_cmd.length = 0x20;
-#ifdef PC98
-	if (sd_bios_parms(disk_parms, sc_link)) {
-	} else
-#endif
-	/*
-	 * If the command worked, use the results to fill out
-	 * the parameter structure
-	 */
-	if (scsi_scsi_cmd(sc_link,
-		(struct scsi_generic *) &scsi_cmd,
-		sizeof(scsi_cmd),
-		(u_char *) & scsi_sense,
-		sizeof(scsi_sense),
-		SD_RETRIES,
-		4000,
-		NULL,
-		flags | SCSI_DATA_IN) != 0) {
-
-		printf("sd%d could not mode sense (4).", unit);
-		printf(" Using fictitious geometry\n");
-		/*
-		 * use adaptec standard fictitious geometry
-		 * this depends on which controller (e.g. 1542C is
-		 * different. but we have to put SOMETHING here..)
-		 */
-		if (error = sd_size(unit, &sectors, &disk_parms->secsiz, flags)) {
-			/* we couldn't get anyhthing. removable? */
-			sectors = 32 * 64;
-			disk_parms->secsiz= DEV_BSIZE;;
-		}
-		disk_parms->heads = 64;
-		disk_parms->sectors = 32;
-		disk_parms->cyls = sectors / (64 * 32);
-		disk_parms->disksize = sectors;
-	} else {
-
-		SC_DEBUG(sc_link, SDEV_DB3,
-	    ("%lu cyls, %d heads, %u precomp, %u red_write, %u land_zone\n",
-		    (u_long)scsi_3btou(&scsi_sense.pages.rigid_geometry.ncyl_2),
-		    scsi_sense.pages.rigid_geometry.nheads,
-		    b2tol(scsi_sense.pages.rigid_geometry.st_cyl_wp),
-		    b2tol(scsi_sense.pages.rigid_geometry.st_cyl_rwc),
-		    b2tol(scsi_sense.pages.rigid_geometry.land_zone)));
-
-		/*
-		 * KLUDGE!!(for zone recorded disks)
-		 * give a number of sectors so that sec * trks * cyls
-		 * is <= disk_size
-		 * can lead to wasted space! THINK ABOUT THIS !
-		 */
-		disk_parms->heads = scsi_sense.pages.rigid_geometry.nheads;
-		disk_parms->cyls = scsi_3btou(
-				&scsi_sense.pages.rigid_geometry.ncyl_2);
-		/* set in a default value */
-		disk_parms->secsiz = scsi_3btou(scsi_sense.blk_desc.blklen);
-
-		if (error = sd_size(unit, &sectors,
-				&disk_parms->secsiz, flags)) {
-			/* we couldn't get anyhthing. removable? */
-			sectors = 64 * 32; /* just so non 0 */
-		}
-		disk_parms->disksize = sectors;
-		/* Check if none of these values are zero */
-		if(disk_parms->heads && disk_parms->cyls) {
-			sectors /= (disk_parms->heads * disk_parms->cyls);
-		} else {
-			/* set it to something reasonable */
-			disk_parms->heads = 64;
-			disk_parms->cyls = sectors / (64 * 32);
-			sectors = 32;
-		}
-		/* keep secsiz sane too - we may divide by it later */
-		if(disk_parms->secsiz == 0)
-			disk_parms->secsiz = SECSIZE;
-		disk_parms->sectors = sectors;	/* dubious on SCSI *//*XXX */
-	}
-	switch (sd->params.secsiz) {
-	case 512:
-	case 1024:
-	case 2048:
-		break;
-	default:
-		printf("sd%lu: Can't deal with %u bytes logical blocks\n",
-		    (u_long)unit, sd->params.secsiz);
-		error = ENXIO;
-	}
-	if (error == 0)
-		sc_link->flags |= SDEV_MEDIA_LOADED;
-	return (error);
-}
-
-static int
-sdsize(dev_t dev)
-{
-	struct scsi_data *sd;
-
-	sd = SCSI_DATA(&sd_switch, (u_int32_t) SDUNIT(dev));
-	if (sd == NULL)
-		return (-1);
-	return (dssize(dev, &sd->dk_slices, sdopen, sdclose));
-}
-
-/*
- * sense handler: Called to determine what to do when the
- * device returns a CHECK CONDITION.
- *
- * This will issue a retry when the device returns a
- * non-media hardware failure.  The CDC-WREN IV does this
- * when you access it during thermal calibrarion, so the drive
- * is pretty useless without this.
- *
- * In general, you probably almost always would like to issue a retry
- * for your disk I/O.  It can't hurt too much (the caller only retries
- * so many times) and it may save your butt.
- */
-
-static int
-sd_sense_handler(struct scsi_xfer *xs)
-{
-	struct scsi_sense_data *sense;
-	struct scsi_inquiry_data *inqbuf;
-
-	sense = &(xs->sense);
-
-	/* I don't know what the heck to do with a deferred error,
-	 * so I'll just kick it back to the caller.
-	 */
-	if ((sense->error_code & SSD_ERRCODE) == 0x71)
-		return SCSIRET_CONTINUE;
-
-	if (((sense->error_code & SSD_ERRCODE) == 0x70) &&
-		((sense->ext.extended.flags & SSD_KEY) == 0x05))
-		/* No point in retrying Illegal Requests */
-			return SCSIRET_CONTINUE;
-
-	inqbuf = &(xs->sc_link->inqbuf);
-
-	/* It is dangerous to retry on removable drives without
-	 * looking carefully at the additional sense code
-	 * and sense code qualifier and ensuring the disk hasn't changed:
-	 */
-	if (inqbuf->dev_qual2 & SID_REMOVABLE)
-		return SCSIRET_CONTINUE;
-
-	/* Retry all disk errors.
-	 */
-	scsi_sense_print(xs);
-	if (xs->retries)
-		printf(", retries:%d\n", xs->retries);
-	else
-		printf(", FAILURE\n");
-
-	return SCSIRET_DO_RETRY;
-}
-
-/*
- * dump all of physical memory into the partition specified, starting
- * at offset 'dumplo' into the partition.
- * XXX for SLICE starts at argument 'start'.
- */
-static errval
-sddump(dev_t dev)
-{				/* dump core after a system crash */
-	struct disklabel *lp;
-	int32_t	num;		/* number of sectors to write */
-	u_int32_t	unit, part;
-	int32_t	nblocks;
-	int32_t	blkoff;
-	static	int sddoingadump = 0;
-	register struct scsi_data *sd;	/* disk unit to do the IO */
-	struct scsi_link *sc_link;
-	int32_t	blknum, blkcnt = MAXTRANSFER;
-	char	*addr;
-	struct	scsi_rw_big cmd;
-	struct	scsi_xfer *xs = &sx;
-	errval	retval;
-
-	addr = (char *) 0;	/* starting address */
-
-	/* toss any characters present prior to dump */
-	while (cncheckc() != -1) ;
-
-	/* size of memory to dump */
-	num = Maxmem;
-	unit = SDUNIT(dev);	/* eventually support floppies? */
-	part = PARTITION(dev);	/* file system */
-
-	sc_link = SCSI_LINK(&sd_switch, unit);
-
-	if (!sc_link)
-		return ENXIO;
-
-	sd = sc_link->sd;
-
-	/* was it ever initialized etc. ? */
-	if (!(sd->flags & SDINIT))
-		return (ENXIO);
-	if ((sc_link->flags & SDEV_MEDIA_LOADED) != SDEV_MEDIA_LOADED)
-		return (ENXIO);
-	if (sd->dk_slices == NULL)
-		Debugger("sddump: no slices");
-	if ((lp = dsgetlabel(dev, sd->dk_slices)) == NULL)
-		return (ENXIO);
-
-	/* Convert to disk sectors */
-	/* XXX it must be 512 */
-	num = (u_int32_t) num * PAGE_SIZE / sd->params.secsiz;
-
-	/* check if controller active */
-	if (sddoingadump)
-		return (EFAULT);
-
-	nblocks = lp->d_partitions[part].p_size;
-	blkoff = lp->d_partitions[part].p_offset;
-	/* XXX */
-	blkoff += sd->dk_slices->dss_slices[dkslice(dev)].ds_offset;
-
-	/* check transfer bounds against partition size */
-	if ((dumplo < 0) || ((dumplo + num) > nblocks))
-		return (EINVAL);
-
-	sddoingadump = 1;
-
-	blknum = dumplo + blkoff;
-	while (num > 0) {
-		if (is_physical_memory((vm_offset_t)addr))
-		    pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
-		 	       trunc_page(addr), VM_PROT_READ, TRUE);
-		else
-		    pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
-			       trunc_page(0), VM_PROT_READ, TRUE);
-		/*
-		 *  Fill out the scsi command
-		 */
-		bzero(&cmd, sizeof(cmd));
-		cmd.op_code = WRITE_BIG;
-		cmd.addr_3 = (blknum & 0xff000000) >> 24;
-		cmd.addr_2 = (blknum & 0xff0000) >> 16;
-		cmd.addr_1 = (blknum & 0xff00) >> 8;
-		cmd.addr_0 = blknum & 0xff;
-		cmd.length2 = (blkcnt & 0xff00) >> 8;
-		cmd.length1 = (blkcnt & 0xff);
-		/*
-		 * Fill out the scsi_xfer structure
-		 *    Note: we cannot sleep as we may be an interrupt
-		 * don't use scsi_scsi_cmd() as it may want
-		 * to wait for an xs.
-		 */
-		bzero(xs, sizeof(sx));
-		xs->flags |= SCSI_NOMASK | SCSI_NOSLEEP | INUSE | SCSI_DATA_OUT;
-		xs->sc_link = sc_link;
-		xs->retries = SD_RETRIES;
-		xs->timeout = 10000;	/* 10000 millisecs for a disk ! */
-		xs->cmd = (struct scsi_generic *) &cmd;
-		xs->cmdlen = sizeof(cmd);
-		xs->resid = 0;
-		xs->error = XS_NOERROR;
-		xs->bp = 0;
-		xs->data = (u_char *) CADDR1;	/* XXX use pmap_enter() */
-		xs->datalen = blkcnt * sd->params.secsiz;
-
-		/*
-		 * Pass all this info to the scsi driver.
-		 */
-		retval = (*(sc_link->adapter->scsi_cmd)) (xs);
-		switch (retval) {
-		case SUCCESSFULLY_QUEUED:
-		case HAD_ERROR:
-			return (ENXIO);		/* we said not to sleep! */
-		case COMPLETE:
-			break;
-		default:
-			return (ENXIO);		/* we said not to sleep! */
-		}
-
-		/*
-		 * If we are dumping core, it may take a while.
-		 * So reassure the user and hold off any watchdogs.
-		 */
-		if ((uintptr_t)addr % (1024 * 1024) == 0) {
-#ifdef	HW_WDOG
-			if (wdog_tickler)
-				(*wdog_tickler)();
-#endif /* HW_WDOG */
-			printf("%ld ", (u_long)(num / 2048));
-		}
-		/* update block count */
-		num -= blkcnt;
-		blknum += blkcnt;
-		addr += blkcnt * sd->params.secsiz;
-
-		/* operator aborting dump? */
-		if (cncheckc() != -1)
-			return (EINTR);
-	}
-	return (0);
-}
-
-static sd_devsw_installed = 0;
-
-static void 	sd_drvinit(void *unused)
-{
-
-	if( ! sd_devsw_installed ) {
-		cdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &sd_cdevsw);
-		sd_devsw_installed = 1;
-    	}
-}
-
-SYSINIT(sddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,sd_drvinit,NULL)
-