diff --git a/sys/dev/scsipi/files.scsipi b/sys/dev/scsipi/files.scsipi
index 7750b175ab28..a54ee342bc00 100644
--- a/sys/dev/scsipi/files.scsipi
+++ b/sys/dev/scsipi/files.scsipi
@@ -1,4 +1,4 @@
-#	$NetBSD: files.scsipi,v 1.1 1995/04/17 07:15:40 cgd Exp $
+#	$NetBSD: files.scsipi,v 1.2 1996/02/18 20:32:40 mycroft Exp $
 #
 # Config.new file and device description for machine-independent SCSI code.
 # Included by ports that need it.  Ports that usee it must provide
@@ -19,6 +19,10 @@ device	sd at scsibus: disk
 file	scsi/sd.c			sd needs-flag
 device	st at scsibus: tape
 file	scsi/st.c			st needs-flag
+device	ss at scsibus: tape
+file	scsi/ss.c			ss needs-flag
+file	scsi/ss_mustek.c		ss
+file	scsi/ss_scanjet.c		ss
 device	su at scsibus: disk
 file	scsi/su.c			su needs-flag
 device	uk at scsibus: disk
diff --git a/sys/dev/scsipi/scsi_scanner.h b/sys/dev/scsipi/scsi_scanner.h
new file mode 100644
index 000000000000..0db8028c2f69
--- /dev/null
+++ b/sys/dev/scsipi/scsi_scanner.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
+ *   modified for configurable scanner support by Joachim Koenig
+ *
+ * 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 Kenneth Stailey.
+ * 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.
+ */
+
+/*
+ * SCSI scanner interface description
+ */
+
+#ifndef	_SCSI_SCANNER_H_
+#define _SCSI_SCANNER_H_
+
+/* SCSI scanner commands */
+#define GET_IMAGE_STATUS	0x0f
+#define READ_BIG		0x28
+#define WRITE_BIG		0x2a
+#define OBJECT_POSITION		0x31
+#define GET_BUFFER_STATUS	0x34
+
+/* generic scanner command formats */
+
+struct scsi_rw_scanner {
+#define	READ			0x08
+#define WRITE			0x0a
+	u_char	opcode;
+	u_char	byte2;
+#define	SRW_FIXED		0x01
+	u_char	len[3];
+	u_char	control;
+};
+
+struct scsi_start_stop {
+	u_char	opcode;
+	u_char	byte2;
+	u_char	unused[2];
+	u_char  how;
+#define	SSS_STOP		0x00
+#define	SSS_START		0x01
+#define	SSS_LOEJ		0x02
+	u_char	control;
+};
+
+struct scsi_set_window {
+#define SET_WINDOW		0x24 /* set params of image area and windows */
+#define GET_WINDOW		0x25
+	u_char	opcode;
+	u_char	byte2;
+	u_char	reserved[4];
+	u_char  len[3];
+	u_char	control;
+};
+
+struct scsi_window_header {
+	u_char	reserved[6];
+	u_char  len[2];		    /* MSB-LSB */
+};
+
+struct scsi_window_data {
+	u_char	window_id;	    /* must be zero */
+	u_char	res1:7;
+	u_char	auto_bit:1;
+	u_char	x_res[2];
+	u_char	y_res[2];
+	u_char	x_org[4];
+	u_char	y_org[4];
+	u_char	width[4];
+	u_char	length[4];
+	u_char	brightness;
+	u_char	threshold;
+	u_char	contrast;
+	u_char	image_comp;	    /* image composition (data type) */
+	u_char	bits_per_pixel;
+	u_char	halftone_pattern[2];
+	u_char	rif:1;		    /* reverse image format (mono negative) */
+	u_char  res2:4;
+	u_char	pad_type:3;
+	u_char	bit_ordering[2];
+	u_char	compression_type;
+	u_char	compression_arg;
+	u_char	res3[6];
+};
+
+/* mustek scsi commands */
+
+#define MUSTEK_SET_WINDOW	0x04	/* set image area and windows */
+#define MUSTEK_ADF		0x10	/* ADF and backtracking selection */
+#define MUSTEK_LUT		0x55	/* look up table download */
+
+#endif /* _SCSI_SCANNER_H_ */
diff --git a/sys/dev/scsipi/scsiconf.c b/sys/dev/scsipi/scsiconf.c
index 613ff9ac1a6f..fe4e09d3cd2e 100644
--- a/sys/dev/scsipi/scsiconf.c
+++ b/sys/dev/scsipi/scsiconf.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: scsiconf.c,v 1.48 1996/02/14 21:47:27 christos Exp $	*/
+/*	$NetBSD: scsiconf.c,v 1.49 1996/02/18 20:32:43 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1994 Charles Hannum.  All rights reserved.
@@ -76,7 +76,6 @@
  */
 void scsi_probedev __P((struct scsibus_softc *, int, int));
 int scsi_probe_bus __P((int bus, int target, int lun));
-void scsi_strvis __P((u_char *, u_char *, int));
 
 struct scsi_device probe_switch = {
 	NULL,
diff --git a/sys/dev/scsipi/scsiconf.h b/sys/dev/scsipi/scsiconf.h
index 255dee96b203..efda1dde6bf1 100644
--- a/sys/dev/scsipi/scsiconf.h
+++ b/sys/dev/scsipi/scsiconf.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: scsiconf.h,v 1.27 1996/02/14 21:47:32 christos Exp $	*/
+/*	$NetBSD: scsiconf.h,v 1.28 1996/02/18 20:32:45 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1993, 1994, 1995 Charles Hannum.  All rights reserved.
@@ -286,6 +286,7 @@ void show_scsi_xs __P((struct scsi_xfer *));
 void show_scsi_cmd __P((struct scsi_xfer *));
 void show_mem __P((u_char *, int));
 int scsi_probe_busses __P((int, int, int));
+void scsi_strvis __P((u_char *, u_char *, int));
 
 
 void lto3b __P((u_int32_t val, u_int8_t *bytes));
diff --git a/sys/dev/scsipi/ss.c b/sys/dev/scsipi/ss.c
new file mode 100644
index 000000000000..c987eb8e0a60
--- /dev/null
+++ b/sys/dev/scsipi/ss.c
@@ -0,0 +1,491 @@
+/*	$NetBSD: ss.c,v 1.1 1996/02/18 20:32:46 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
+ *   modified for configurable scanner support by Joachim Koenig
+ *
+ * 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 Kenneth Stailey.
+ * 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.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/device.h>
+#include <sys/conf.h>		/* for cdevsw */
+#include <sys/scanio.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_scanner.h>
+#include <scsi/scsiconf.h>
+#include <scsi/ssvar.h>
+
+#include <scsi/ss_mustek.h>
+
+#define SSMODE(z)	( minor(z)       & 0x03)
+#define SSUNIT(z)	((minor(z) >> 4)       )
+
+/*
+ * If the mode is 3 (e.g. minor = 3,7,11,15)
+ * then the device has been openned to set defaults
+ * This mode does NOT ALLOW I/O, only ioctls
+ */
+#define MODE_REWIND	0
+#define MODE_NONREWIND	1
+#define MODE_CONTROL	3
+
+int ssmatch __P((struct device *, void *, void *));
+void ssattach __P((struct device *, struct device *, void *));
+
+struct cfdriver sscd = {
+	NULL, "ss", ssmatch, ssattach, DV_DULL, sizeof(struct ss_softc)
+};
+
+void    ssstrategy __P((struct buf *));
+void    ssstart __P((void *));
+
+struct scsi_device ss_switch = {
+	NULL,
+	ssstart,
+	NULL,
+	NULL,
+};
+
+struct scsi_inquiry_pattern ss_patterns[] = {
+	{T_SCANNER, T_FIXED,
+	 "",         "",                 ""},
+	{T_SCANNER, T_REMOV,
+	 "",         "",                 ""},
+	{T_PROCESSOR, T_FIXED,
+	 "HP      ", "C1750A          ", ""},
+	{T_PROCESSOR, T_FIXED,
+	 "HP      ", "C2500A          ", ""},
+};
+
+int
+ssmatch(parent, match, aux)
+	struct device *parent;
+	void *match, *aux;
+{
+	struct scsibus_attach_args *sa = aux;
+	int priority;
+
+	(void)scsi_inqmatch(sa->sa_inqbuf,
+	    (caddr_t)ss_patterns, sizeof(ss_patterns)/sizeof(ss_patterns[0]),
+	    sizeof(ss_patterns[0]), &priority);
+	return (priority);
+}
+
+/*
+ * The routine called by the low level scsi routine when it discovers
+ * A device suitable for this driver
+ * If it is a know special, call special attach routine to install
+ * special handlers into the ss_softc structure
+ */
+void
+ssattach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct ss_softc *ss = (void *)self;
+	struct scsibus_attach_args *sa = aux;
+	struct scsi_link *sc_link = sa->sa_sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB2, ("ssattach: "));
+
+	/*
+	 * Store information needed to contact our base driver
+	 */
+	ss->sc_link = sc_link;
+	sc_link->device = &ss_switch;
+	sc_link->device_softc = ss;
+	sc_link->openings = 1;
+
+	/*
+	 * look for non-standard scanners with help of the quirk table
+	 * and install functions for special handling
+	 */
+	SC_DEBUG(sc_link, SDEV_DB2, ("ssattach:\n"));
+	if (!bcmp(sa->sa_inqbuf->vendor, "MUSTEK  ", 8))
+		mustek_attach(ss, sa);
+	if (!bcmp(sa->sa_inqbuf->vendor, "HP      ", 8))
+		scanjet_attach(ss, sa);
+	if (ss->special == NULL) {
+		/* XXX add code to restart a SCSI2 scanner, if any */
+	}
+
+	/*
+	 * Set up the buf queue for this device
+	 */
+	ss->buf_queue.b_active = 0;
+	ss->buf_queue.b_actf = 0;
+	ss->buf_queue.b_actb = &ss->buf_queue.b_actf;
+}
+
+/*
+ * open the device.
+ */
+int
+ssopen(dev, flag, mode, p)
+	dev_t dev;
+	int flag
+	int mode;
+	struct proc *p;
+{
+	int unit;
+	u_int mode;
+	int error = 0;
+	struct ss_softc *ss;
+	struct scsi_link *sc_link;
+
+	unit = SSUNIT(dev);
+	if (unit >= sscd.cd_ndevs)
+		return (ENXIO);
+	ss = sscd.cd_devs[unit];
+	if (!ss)
+		return (ENXIO);
+
+	mode = SSMODE(dev);
+	sc_link = ss->sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("open: dev=0x%x (unit %d (of %d))\n", dev,
+	    unit, sscd.cd_ndevs));
+
+	if (sc_link->flags & SDEV_OPEN) {
+		printf("%s: already open\n", ss->sc_dev.dv_xname);
+		return (EBUSY);
+	}
+
+	/*
+	 * Catch any unit attention errors.
+	 *
+	 * SCSI_IGNORE_MEDIA_CHANGE: when you have an ADF, some scanners
+	 * consider paper to be a changeable media
+	 *
+	 */
+	error = scsi_test_unit_ready(sc_link,
+	    SCSI_IGNORE_MEDIA_CHANGE | SCSI_IGNORE_ILLEGAL_REQUEST |
+	    (mode == MODE_CONTROL ? SCSI_IGNORE_NOT_READY : 0));
+	if (error)
+		goto bad;
+
+	sc_link->flags |= SDEV_OPEN;	/* unit attn are now errors */
+
+	/*
+	 * If the mode is 3 (e.g. minor = 3,7,11,15)
+	 * then the device has been opened to set defaults
+	 * This mode does NOT ALLOW I/O, only ioctls
+	 */
+	if (mode == MODE_CONTROL)
+		return (0);
+
+	SC_DEBUG(sc_link, SDEV_DB2, ("open complete\n"));
+	return (0);
+
+bad:
+	sc_link->flags &= ~SDEV_OPEN;
+	return (error);
+}
+
+/*
+ * close the device.. only called if we are the LAST
+ * occurence of an open device
+ */
+int
+ssclose(dev)
+	dev_t dev;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(dev)];
+	int error;
+
+	SC_DEBUG(ss->sc_link, SDEV_DB1, ("closing\n"));
+
+	if (SSMODE(dev) == MODE_REWIND) {
+		if (ss->special->rewind_scanner) {
+			/* call special handler to rewind/abort scan */
+			error = (ss->special->rewind_scanner)(ss);
+			if (error)
+				return (error);
+		} else {
+			/* XXX add code to restart a SCSI2 scanner, if any */
+			ss->sio.scan_window_size = 0;
+		}
+		ss->flags &= ~SSF_TRIGGERED;
+	}
+	ss->sc_link->flags &= ~SDEV_OPEN;
+
+	return (0);
+}
+
+/*
+ * trim the size of the transfer if needed,
+ * called by physio
+ * basically the smaller of our min and the scsi driver's
+ * minphys
+ */
+void
+ssminphys(bp)
+	struct buf *bp;
+{
+	register struct ss_softc *ss = sscd.cd_devs[SSUNIT(bp->b_dev)];
+
+	(ss->sc_link->adapter->scsi_minphys)(bp);
+
+	/*
+	 * trim the transfer further for special devices this is
+	 * because some scanners only read multiples of a line at a
+	 * time, also some cannot disconnect, so the read must be
+	 * short enough to happen quickly
+	 */
+	if (ss->special->minphys)
+		(ss->special->minphys)(ss, bp);
+}
+
+/*
+ * Do a read on a device for a user process.
+ * Prime scanner at start of read, check uio values, call ssstrategy
+ * via physio for the actual transfer.
+ */
+int
+ssread(dev, uio, flag)
+	dev_t dev;
+	struct uio *uio;
+	int flag;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(dev)];
+	int error;
+
+	/* if the scanner has not yet been started, do it now */
+	if (!(ss->flags & SSF_TRIGGERED)) {
+		if (ss->special->trigger_scanner) {
+			error = (ss->special->trigger_scanner)(ss);
+			if (error)
+				return (error);
+		}
+		ss->flags |= SSF_TRIGGERED;
+	}
+
+	/* in any case, trim it down to window_size */
+	if (uio->uio_iov->iov_len > ss->sio.scan_window_size) {
+		uio->uio_iov->iov_len = ss->sio.scan_window_size;
+
+		SC_DEBUG(ss->sc_link, SDEV_DB1,
+		    ("ssread: bytes wanted exceeds window size\n"));
+		SC_DEBUG(ss->sc_link, SDEV_DB1,
+		    ("ssread: xfer reduced to %d\n", uio->uio_iov->iov_len));
+	}
+
+	/*
+	 * EOF detection
+	 */
+
+	if (ss->sio.scan_window_size == 0) {
+		uio->uio_iov++;
+		uio->uio_iovcnt--;
+		return (0);
+	}
+
+	return (physio(ssstrategy, NULL, dev, B_READ, ssminphys, 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.
+ */
+void
+ssstrategy(bp)
+	struct buf *bp;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(bp->b_dev)];
+	struct buf *dp;
+	int s;
+
+	SC_DEBUG(ss->sc_link, SDEV_DB1,
+	    ("ssstrategy %d bytes @ blk %d\n", bp->b_bcount, bp->b_blkno));
+
+	/*
+	 * If it's a null transfer, return immediatly
+	 */
+	if (bp->b_bcount == 0)
+		goto done;
+
+	s = splbio();
+
+	/*
+	 * Place it in the queue of activities for this scanner
+	 * at the end (a bit silly because we only have on user..
+	 * (but it could fork()))
+	 */
+	dp = &ss->buf_queue;
+	bp->b_actf = NULL;
+	bp->b_actb = dp->b_actb;
+	*dp->b_actb = bp;
+	dp->b_actb = &bp->b_actf;
+
+	/*
+	 * Tell the device to get going on the transfer if it's
+	 * not doing anything, otherwise just wait for completion
+	 * (All a bit silly if we're only allowing 1 open but..)
+	 */
+	ssstart(ss);
+
+	splx(s);
+	return;
+bad:
+	bp->b_flags |= B_ERROR;
+done:
+	/*
+	 * Correctly set the buf to indicate a completed xfer
+	 */
+	bp->b_resid = bp->b_bcount;
+	biodone(bp);
+}
+
+/*
+ * ssstart 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 required. 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 (ssstrategy)
+ *
+ * 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.
+ * ssstart() is called at splbio
+ */
+void
+ssstart(v)
+	void *v;
+{
+	struct ss_softc *ss = v;
+	struct scsi_link *sc_link = ss->sc_link;
+	register struct buf *bp, *dp;
+
+	SC_DEBUG(sc_link, SDEV_DB2, ("ssstart "));
+	/*
+	 * See if there is a buf to do and we are not already
+	 * doing one
+	 */
+	while (sc_link->openings > 0) {
+		/* if a special awaits, let it proceed first */
+		if (sc_link->flags & SDEV_WAITING) {
+			sc_link->flags &= ~SDEV_WAITING;
+			wakeup((caddr_t)sc_link);
+			return;
+		}
+
+		/*
+		 * See if there is a buf with work for us to do..
+		 */
+		dp = &ss->buf_queue;
+		if ((bp = dp->b_actf) == NULL)
+			return;
+		if ((dp = bp->b_actf) != NULL)
+			dp->b_actb = bp->b_actb;
+		else
+			ss->buf_queue.b_actb = bp->b_actb;
+		*bp->b_actb = dp;
+
+		if (ss->special->read) {
+			(ss->special->read)(ss, bp);
+		} else {
+			/* generic scsi2 scanner read */
+			/* XXX add code for SCSI2 scanner read */
+		}
+	}
+}
+
+/*
+ * Perform special action on behalf of the user;
+ * knows about the internals of this device
+ */
+int
+ssioctl(dev, cmd, addr, flag, p)
+	dev_t dev;
+	u_long cmd;
+	caddr_t addr;
+	int flag;
+	struct proc *p;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(dev)];
+	int error = 0;
+	int unit;
+	struct scan_io *sio;
+
+	switch (cmd) {
+	case SCIOCGET:
+		if (ss->special->get_params) {
+			/* call special handler */
+			if ((error = (ss->special->get_params)(ss)) > 0)
+				return (error);
+		} else {
+			/* XXX add code for SCSI2 scanner, if any */
+			return (EOPNOTSUPP);
+		}
+		bcopy(&ss->sio, addr, sizeof(struct scan_io));
+		break;
+	case SCIOCSET:
+		sio = (struct scan_io *)addr;
+
+		if (ss->special->set_params) {
+			/* call special handler */
+			if ((error = (ss->special->set_params)(ss, sio)) > 0)
+				return (error);
+		} else {
+			/* XXX add code for SCSI2 scanner, if any */
+			return (EOPNOTSUPP);
+		}
+		break;
+	case SCIOCRESTART:
+		if (ss->special->rewind_scanner ) {
+			/* call special handler */
+			if ((error = (ss->special->rewind_scanner)(ss)) > 0)
+				return (error);
+		} else
+			/* XXX add code for SCSI2 scanner, if any */
+			return (EOPNOTSUPP);
+		ss->flags &= ~SSF_TRIGGERED;
+		break;
+#ifdef NOTYET
+	case SCAN_USE_ADF:
+		break;
+#endif
+	default:
+		if (SSMODE(dev) != MODE_CONTROL)
+			return (ENOTTY);
+		return (scsi_do_ioctl(ss->sc_link, dev, cmd, addr, flag, p));
+	}
+	return (error);
+}
diff --git a/sys/dev/scsipi/ss_mustek.c b/sys/dev/scsipi/ss_mustek.c
new file mode 100644
index 000000000000..7be6628fe01f
--- /dev/null
+++ b/sys/dev/scsipi/ss_mustek.c
@@ -0,0 +1,623 @@
+/*	$NetBSD: ss_mustek.c,v 1.1 1996/02/18 20:32:47 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Joachim Koenig-Baltes.  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 Joachim Koenig-Baltes.
+ * 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.
+ */
+
+/*
+ * special driver for MUSTEK flatbed scanners MFS 06000CX and MFS 12000CX
+ * these scanners come with their own scsi card, containing an NCR53C400
+ * SCSI controller chip. I'm in the progress of writing a driver for this
+ * card to work under NetBSD-current. I've hooked it up to a Seagate ST01
+ * hostadapter in the meantime, giving 350KB/sec for higher resolutions!
+ *
+ * I tried to connect it to my Adaptec 1542B, but with no success. It seems,
+ * it does not like synchronous negotiation between Hostadapter and other
+ * targets, but I could not turn this off for the 1542B.
+ *
+ * There is also an other reason why you would not like to connect it to your
+ * favourite SCSI host adapter: The Mustek DOES NOT DISCONNECT. It will block
+ * other traffic from the bus while a transfer is active.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/device.h>
+#include <sys/conf.h>		/* for cdevsw */
+#include <sys/scanio.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_scanner.h>
+#include <scsi/scsiconf.h>
+#include <scsi/ssvar.h>
+#include <scsi/ss_mustek.h>
+
+#define MUSTEK_RETRIES 4
+
+int mustek_get_params __P((struct ss_softc *));
+int mustek_set_params __P((struct ss_softc *, struct scan_io *));
+int mustek_trigger_scanner __P((struct ss_softc *));
+void mustek_minphys __P((struct ss_softc *, struct buf *));
+int mustek_read __P((struct ss_softc *, struct buf *));
+int mustek_rewind_scanner __P((struct ss_softc *));
+
+/* only used internally */
+int mustek_get_status __P((struct ss_softc *, int, int));
+void mustek_compute_sizes __P((struct ss_softc *));
+
+/*
+ * structure for the special handlers
+ */
+struct ss_special mustek_special = {
+	mustek_set_params,
+	mustek_trigger_scanner,
+	mustek_get_params,
+	mustek_minphys,
+	mustek_read,
+	mustek_rewind_scanner,
+	NULL,			/* no adf support right now */
+	NULL			/* no adf support right now */
+};
+
+/*
+ * mustek_attach: attach special functions to ss
+ */
+void
+mustek_attach(ss, sa)
+	struct ss_softc *ss;
+	struct scsibus_attach_args *sa;
+{
+	struct scsi_link *sc_link = sa->sa_sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: start\n"));
+	ss->sio.scan_scanner_type = 0;
+
+	/* first, check the model which determines resolutions */
+	if (!bcmp(sa->sa_inqbuf->product, "MFS-06000CX", 11)) {
+		ss->sio.scan_scanner_type = MUSTEK_06000CX;
+		printf(": Mustek 6000CX Flatbed 3-pass color scanner, 3 - 600 dpi\n");
+	}
+	if (!bcmp(sa->sa_inqbuf->product, "MFS-12000CX", 11)) {
+		ss->sio.scan_scanner_type = MUSTEK_12000CX;
+		printf(": Mustek 12000CX Flatbed 3-pass color scanner, 6 - 1200 dpi\n");
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: scanner_type = %d\n",
+	    ss->sio.scan_scanner_type));
+
+	/* install special handlers */
+	ss->special = &mustek_special;
+
+	/*
+	 * populate the scanio struct with legal values
+	 * the default should come from user space
+	 */
+	ss->sio.scan_width		= 1200;
+	ss->sio.scan_height		= 1200;
+	ss->sio.scan_x_resolution	= 99;
+	ss->sio.scan_y_resolution	= 99;
+	ss->sio.scan_x_origin		= 0;
+	ss->sio.scan_y_origin		= 0;
+	ss->sio.scan_brightness		= 100;
+	ss->sio.scan_contrast		= 100;
+	ss->sio.scan_quality		= 100;
+	ss->sio.scan_image_mode		= SIM_GRAYSCALE;
+
+	mustek_compute_sizes(ss);
+}
+
+int
+mustek_get_params (ss)
+	struct ss_softc *ss;
+{
+
+	return (0);
+}
+
+/*
+ * check the parameters if the mustek is capable of fulfilling it
+ * but don't send the command to the scanner in case the user wants
+ * to change parameters by more than one call
+ */
+int
+mustek_set_params(ss, sio)
+	struct ss_softc *ss;
+	struct scan_io *sio;
+{
+	int error;
+
+	/*
+	 * if the scanner is triggered, then rewind it
+	 */
+	if (ss->flags & SSF_TRIGGERED) {
+		error = mustek_rewind_scanner(ss);
+		if (error)
+			return (error);
+	}
+
+	/* size constraints: 8.5" horizontally and 14" vertically */
+#ifdef MUSTEK_INCH_SPEC
+	/* sizes must be a multiple of 1/8" */
+	sio->scan_x_origin -= sio->scan_x_origin % 150;
+	sio->scan_y_origin -= sio->scan_y_origin % 150;
+	sio->scan_width -= sio->scan_width % 150;
+	sio->scan_height -= sio->scan_height % 150;
+#endif
+	if (sio->scan_width == 0 ||
+	    sio->scan_x_origin + sio->scan_width > 10200 ||
+	    sio->scan_height == 0 ||
+	    sio->scan_y_origin + sio->scan_height > 16800)
+		return (EINVAL);
+
+	/*
+	 * for now, only realize the values for the MUSTEK_06000CX
+	 * in the future, values for the MUSTEK_12000CX will be implemented
+	 */
+
+	/*
+	 * resolution (dpi) must be <= 300 and a multiple of 3 or
+	 * between 300 and 600 and a multiple of 30
+	 */
+	sio->scan_x_resolution -= sio->scan_x_resolution <= 300 ?
+	    sio->scan_x_resolution % 3 : sio->scan_x_resolution % 30;
+	sio->scan_y_resolution -= sio->scan_y_resolution <= 300 ?
+	    sio->scan_y_resolution % 3 : sio->scan_y_resolution % 30;
+	if (sio->scan_x_resolution < 3 || sio->scan_x_resolution > 600 ||
+	    sio->scan_x_resolution != sio->scan_y_resolution)
+		return (EINVAL);
+
+	/* assume brightness values are between 64 and 136 in steps of 3 */
+	sio->scan_brightness -= (sio->scan_brightness - 64) % 3;
+	if (sio->scan_brightness < 64 || sio->scan_brightness > 136)
+		return (EINVAL);
+
+	/* contrast values must be between 16 and 184 in steps of 7 */
+	sio->scan_contrast -= (sio->scan_contrast - 16) % 7;
+	if (sio->scan_contrast < 16 || sio->scan_contrast > 184)
+		return (EINVAL);
+
+	/*
+	 * velocity: between 0 (fast) and 4 (slow) which will be mapped
+	 * to 100% = 4, 80% = 3, 60% = 2, 40% = 1, 20% = 0
+	 * must be a multiple of 20
+	 */
+	sio->scan_quality -= sio->scan_quality % 20;
+	if (sio->scan_quality < 20 || sio->scan_quality > 100)
+		return (EINVAL);
+
+	switch (sio->scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+	case SIM_GRAYSCALE:
+	case SIM_RED:
+	case SIM_GREEN:
+	case SIM_BLUE:
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	/* change ss_softc to the new values, but save ro-variables */
+	sio->scan_scanner_type = ss->sio.scan_scanner_type;
+	bcopy(sio, &ss->sio, sizeof(struct scan_io));
+
+	mustek_compute_sizes(ss);
+
+	return (0);
+}
+
+/*
+ * trim the requested transfer to a multiple of the line size
+ * this is called only from ssread() which guarantees, scanner is triggered
+ * In the future, it will trim the transfer to not read to much at a time
+ * because the mustek cannot disconnect. It will be calculated by the
+ * resolution, the velocity and the number of bytes per line.
+ */
+void
+mustek_minphys(ss, bp)
+	struct ss_softc *ss;
+	struct buf *bp;
+{
+	struct scsi_link *sc_link = ss->sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_minphys: before: %d\n",
+	    bp->b_bcount));
+	bp->b_bcount -= bp->b_bcount %
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_minphys: after:  %d\n",
+	    bp->b_bcount));
+}
+
+/*
+ * trigger the scanner to start a scan operation
+ * this includes sending the mode- and window-data, starting the scanner
+ * and getting the image size info
+ */
+int
+mustek_trigger_scanner(ss)
+	struct ss_softc *ss;
+{
+	struct mustek_mode_select_cmd mode_cmd;
+	struct mustek_mode_select_data mode_data;
+	struct mustek_set_window_cmd window_cmd;
+	struct mustek_set_window_data window_data;
+	struct mustek_start_scan_cmd start_scan_cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+#ifndef MUSTEK_INCH_SPEC
+	int pixel_tlx, pixel_tly, pixel_brx, pixel_bry, paperlength;
+#endif
+	int error;
+
+	mustek_compute_sizes(ss);
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner\n"));
+
+	/*
+	 * set the window params and send the scsi command
+	 */
+	bzero(&window_cmd, sizeof(window_cmd));
+	window_cmd.opcode = MUSTEK_SET_WINDOW;
+	window_cmd.length = sizeof(window_data);
+
+	bzero(&window_data, sizeof(window_data));
+	window_data.frame_header = MUSTEK_LINEART_BACKGROUND | MUSTEK_UNIT_SPEC;
+#ifdef MUSTEK_INCH_SPEC
+	/* the positional values are all 1 byte because 256 / 8 = 32" */
+	window_data.frame_tl_x_0 = ss->sio.scan_x_origin / 150;
+	window_data.frame_tl_x_1 = 0;
+	window_data.frame_tl_y_0 = ss->sio.scan_y_origin / 150;
+	window_data.frame_tl_y_1 = 0;
+	window_data.frame_br_x_0 = (ss->sio.scan_x_origin +
+				    ss->sio.scan_width) / 150;
+	window_data.frame_br_x_1 = 0;
+	window_data.frame_br_y_0 = (ss->sio.scan_y_origin +
+				    ss->sio.scan_height) / 150;
+	window_data.frame_br_y_1 = 0;
+#else
+	pixel_tlx = (ss->sio.scan_x_origin * ss->sio.scan_x_resolution) / 1200;
+	window_data.frame_tl_x_0 = pixel_tlx & 0xff;
+	window_data.frame_tl_x_1 = (pixel_tlx >> 8) & 0xff;
+	pixel_tly = (ss->sio.scan_y_origin * ss->sio.scan_y_resolution) / 1200;
+	window_data.frame_tl_y_0 = pixel_tly & 0xff;
+	window_data.frame_tl_y_1 = (pixel_tly >> 8) & 0xff;
+	pixel_brx = pixel_tlx +
+	    (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+	window_data.frame_br_x_0 = pixel_brx & 0xff;
+	window_data.frame_br_x_1 = (pixel_brx >> 8) & 0xff;
+	pixel_bry = pixel_tly +
+	    (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+	window_data.frame_br_y_0 = pixel_bry & 0xff;
+	window_data.frame_br_y_1 = (pixel_bry >> 8) & 0xff;
+#endif
+
+#if MUSTEK_WINDOWS >= 1
+	window_data.window1_header = MUSTEK_WINDOW_MASK | MUSTEK_UNIT_SPEC;
+	window_data.window1_tl_x_0 = window_data.frame_tl_x_0;
+	window_data.window1_tl_x_1 = window_data.frame_tl_x_1;
+	window_data.window1_tl_y_0 = window_data.frame_tl_y_0;
+	window_data.window1_tl_y_1 = window_data.frame_tl_y_1;
+	window_data.window1_br_x_0 = window_data.frame_br_x_0;
+	window_data.window1_br_x_1 = window_data.frame_br_x_1;
+	window_data.window1_br_y_0 = window_data.frame_br_y_0;
+	window_data.window1_br_y_1 = window_data.frame_br_y_1;
+#endif
+
+	/* send the set window command to the scanner */
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_set_parms: set_window\n"));
+	error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &window_cmd,
+	    sizeof(window_cmd), (u_char *) &window_data, sizeof(window_data),
+	    MUSTEK_RETRIES, 5000, NULL, SCSI_DATA_OUT);
+	if (error)
+		return (error);
+
+	/*
+	 * do what it takes to actualize the mode
+	 */
+	bzero(&mode_cmd, sizeof(mode_cmd));
+	mode_cmd.opcode = MUSTEK_MODE_SELECT;
+	mode_cmd.length_0 = sizeof(mode_data);
+
+	bzero(&mode_data, sizeof(mode_data));
+	mode_data.mode =
+	    MUSTEK_MODE_MASK | MUSTEK_HT_PATTERN_BUILTIN | MUSTEK_UNIT_SPEC;
+	if (ss->sio.scan_x_resolution <= 300) {
+		mode_data.resolution = ss->sio.scan_x_resolution / 3;
+	} else {
+		/*
+		 * the resolution values is computed by modulo 100, but not
+		 * for 600dpi, where the value is 100 (a bit tricky, but ...)
+		 */
+		mode_data.resolution =
+		    ((ss->sio.scan_x_resolution - 1) % 100) + 1;
+	}
+	mode_data.brightness = (ss->sio.scan_brightness - 64) / 3;
+	mode_data.contrast = (ss->sio.scan_contrast - 16) / 7;
+	mode_data.grain = 0;
+	mode_data.velocity = ss->sio.scan_quality / 20 - 1;
+#ifdef MUSTEK_INCH_SPEC
+	mode_data.paperlength_0 = 14 * 8;	/* 14" */
+	mode_data.paperlength_1 = 0;
+#else
+	paperlength = 14 * ss->sio.scan_y_resolution; /* 14" */
+	mode_data.paperlength_0 = paperlength & 0xff;
+	mode_data.paperlength_1 = (paperlength >> 8) & 0xff;
+#endif
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: mode_select\n"));
+	/* send the command to the scanner */
+	error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &mode_cmd,
+	    sizeof(mode_cmd), (u_char *) &mode_data, sizeof(mode_data),
+	    MUSTEK_RETRIES, 5000, NULL, SCSI_DATA_OUT);
+	if (error)
+		return (error);
+
+	/*
+	 * now construct and send the start command
+	 */
+	bzero(&start_scan_cmd,sizeof(start_scan_cmd));
+	start_scan_cmd.opcode = MUSTEK_START_STOP;
+	start_scan_cmd.mode = MUSTEK_SCAN_START;
+	if (ss->sio.scan_x_resolution <= 300)
+		start_scan_cmd.mode |= MUSTEK_RES_STEP_1;
+	else
+		start_scan_cmd.mode |= MUSTEK_RES_STEP_10;
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+		start_scan_cmd.mode |= MUSTEK_BIT_MODE | MUSTEK_GRAY_FILTER;
+		break;
+	case SIM_GRAYSCALE:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_GRAY_FILTER;
+		break;
+	case SIM_RED:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_RED_FILTER;
+		break;
+	case SIM_GREEN:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_GREEN_FILTER;
+		break;
+	case SIM_BLUE:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_BLUE_FILTER;
+		break;
+	}
+
+	/* send the command to the scanner */
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: start_scan\n"));
+	error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &start_scan_cmd,
+	    sizeof(start_scan_cmd), NULL, 0,
+	    MUSTEK_RETRIES, 5000, NULL, 0);
+	if (error)
+		return (error);
+
+	/*
+	 * now check if scanner ready this time with update of size info
+	 * we wait here so that if the user issues a read directly afterwards,
+	 * the scanner will respond directly (otherwise we had to sleep with
+	 * a buffer locked in memory)
+	 */
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: get_status\n"));
+	error = mustek_get_status(ss, 60, 1);
+	if (error)
+		return (error);
+
+	return (0);
+}
+
+/*
+ * stop a scan operation in progress
+ */
+int
+mustek_rewind_scanner(ss)
+	struct ss_softc *ss;
+{
+	struct mustek_start_scan_cmd cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+	int error;
+
+	if (ss->sio.scan_window_size != 0) {
+		/*
+		 * only if not all data has been read, the scanner has to be
+		 * stopped
+		 */
+		bzero(&cmd, sizeof(cmd));
+		cmd.opcode = MUSTEK_START_STOP;
+		cmd.mode = MUSTEK_SCAN_STOP;
+
+		/* send the command to the scanner */
+		SC_DEBUG(sc_link, SDEV_DB1,
+		    ("mustek_rewind_scanner: stop_scan\n"));
+		error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
+		    sizeof(cmd), NULL, 0, MUSTEK_RETRIES, 5000, NULL, 0);
+		if (error)
+			return (error);
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_rewind_scanner: end\n"));
+
+	return (0);
+}
+
+/*
+ * read the requested number of bytes/lines from the scanner
+ */
+int
+mustek_read(ss, bp)
+	struct ss_softc *ss;
+	struct buf *bp;
+{
+	struct mustek_read_cmd cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+	u_long lines_to_read;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_read: start\n"));
+
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = MUSTEK_READ;
+
+	/* instead of the bytes, the mustek wants the number of lines */
+	lines_to_read = bp->b_bcount /
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_read: read %d lines\n",
+	    lines_to_read));
+	cmd.length_0 = lines_to_read & 0xff;
+	cmd.length_1 = (lines_to_read >> 8) & 0xff;
+	cmd.length_2 = (lines_to_read >> 16) & 0xff;
+
+	/*
+	 * go ask the adapter to do all this for us
+	 */
+	if (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd, sizeof(cmd),
+	    (u_char *) bp->b_data, bp->b_bcount, MUSTEK_RETRIES, 10000, bp,
+	    SCSI_NOSLEEP | SCSI_DATA_IN) != SUCCESSFULLY_QUEUED)
+		printf("%s: not queued\n", ss->sc_dev.dv_xname);
+	else {
+		ss->sio.scan_lines -= lines_to_read;
+		ss->sio.scan_window_size -= bp->b_bcount;
+	}
+
+	return (0);
+}
+
+/*
+ * check if the scanner is ready to take commands
+ *   wait timeout seconds and try only every second
+ *   if update, then update picture size info
+ *
+ *   returns EBUSY if scanner not ready
+ */
+int
+mustek_get_status(ss, timeout, update)
+	struct ss_softc *ss;
+	int timeout, update;
+{
+	struct mustek_get_status_cmd cmd;
+	struct mustek_get_status_data data;
+	struct scsi_link *sc_link = ss->sc_link;
+	int error, lines, bytes_per_line;
+
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = MUSTEK_GET_STATUS;
+	cmd.length = sizeof(data);
+
+	while (1) {
+		SC_DEBUG(sc_link, SDEV_DB1, ("mustek_get_status: stat_cmd\n"));
+		error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
+		    sizeof(cmd), (u_char *) &data, sizeof(data), MUSTEK_RETRIES,
+		    5000, NULL, SCSI_DATA_IN);
+		if (error)
+			return (error);
+		if ((data.ready_busy == MUSTEK_READY) ||
+		    (timeout-- <= 0))
+			break;
+		/* please wait a second */
+		tsleep((caddr_t)mustek_get_status, PRIBIO + 1, "mtkrdy", hz);
+	}
+
+	if (update) {
+		bytes_per_line =
+		    (data.bytes_per_line_1 << 8) |
+		    data.bytes_per_line_0;
+		lines =
+		    (data.lines_2 << 16) |
+		    (data.lines_1 << 8) |
+		    data.lines_0;
+		if (lines != ss->sio.scan_lines) {
+			printf("mustek: lines actual(%d) != computed(%d)\n",
+			    lines, ss->sio.scan_lines);
+			return (EIO);
+		}
+		if (bytes_per_line * lines != ss->sio.scan_window_size) {
+			printf("mustek: win-size actual(%d) != computed(%d)\n",
+			    bytes_per_line * lines, ss->sio.scan_window_size);
+		    return (EIO);
+		}
+
+		SC_DEBUG(sc_link, SDEV_DB1,
+		    ("mustek_get_size: bpl=%d, lines=%d\n",
+		    (ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8,
+		    ss->sio.scan_lines));
+		SC_DEBUG(sc_link, SDEV_DB1, ("window size = %d\n",
+		    ss->sio.scan_window_size));
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_get_status: end\n"));
+	if (data.ready_busy == MUSTEK_READY)
+		return (0);
+	else
+		return (EBUSY);
+}
+
+/*
+ * mustek_compute_sizes: compute window_size and lines for the picture
+ *   this function is called from different places in the code
+ */
+void
+mustek_compute_sizes(ss)
+	struct ss_softc *ss;
+{
+
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+		ss->sio.scan_bits_per_pixel = 1;
+		break;
+	case SIM_GRAYSCALE:
+	case SIM_RED:
+	case SIM_GREEN:
+	case SIM_BLUE:
+		ss->sio.scan_bits_per_pixel = 8;
+		break;
+	}
+
+	/*
+	 * horizontal number of bytes is always a multiple of 2,
+	 * in 8-bit mode at least
+	 */
+	ss->sio.scan_pixels_per_line =
+	    (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+	if (ss->sio.scan_bits_per_pixel == 1)
+		/* make it a multiple of 16, and thus of 2 bytes */
+		ss->sio.scan_pixels_per_line =
+		    (ss->sio.scan_pixels_per_line + 15) & 0xfffffff0;
+	else
+		ss->sio.scan_pixels_per_line =
+		    (ss->sio.scan_pixels_per_line + 1) & 0xfffffffe;
+
+	ss->sio.scan_lines =
+	    (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+	ss->sio.scan_window_size = ss->sio.scan_lines * 
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+}
diff --git a/sys/dev/scsipi/ss_mustek.h b/sys/dev/scsipi/ss_mustek.h
new file mode 100644
index 000000000000..c045675077bd
--- /dev/null
+++ b/sys/dev/scsipi/ss_mustek.h
@@ -0,0 +1,218 @@
+/*	$NetBSD: ss_mustek.h,v 1.1 1996/02/18 20:32:48 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Joachim Koenig-Baltes.  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 Joachim Koenig-Baltes.
+ * 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.
+ */
+
+#ifndef	_SS_MUSTEK_H_
+#define _SS_MUSTEK_H_ 1
+
+/*
+ * support for MUSTEK flatbed SCSI scanners MFS-06000CX and MFS-12000CX
+ * (600 and 1200 dpi horizontally resp), not conforming to the SCSI2 spec.
+ */
+
+/*
+ * Configuration section: describes the mode in which scanner is driven
+ * MUSTEK_INCH_SPEC: frame/window sizes are given in inches instead of
+ *     pixels, note: unit is 1/8th of an inch
+ * MUSTEK_WINDOWS: number of windows in a frame, up to 4 allowed,
+ *     not used yet, so set to 0
+ */
+#define MUSTEK_INCH_SPEC		/* use inches to specify sizes */
+#define MUSTEK_WINDOWS		0	/* no window support yet */
+
+/* mustek scsi commands */
+#define MUSTEK_SET_WINDOW	0x04	/* set image area and windows */
+#define MUSTEK_READ		0x08	/* read command */
+#define MUSTEK_GET_STATUS	0x0f	/* image status */
+#define MUSTEK_MODE_SELECT	0x15	/* set resolution, paper length, .. */
+#define MUSTEK_ADF		0x10	/* ADF and backtracking selection */
+#define MUSTEK_START_STOP	0x1b	/* start/stop scan */
+#define MUSTEK_LUT		0x55	/* look up table download */
+
+/* the size spec is at the same bit position in different commands */
+#define	MUSTEK_UNIT_INCHES		0x00
+#define MUSTEK_UNIT_PIXELS		0x08
+#ifdef MUSTEK_INCH_SPEC
+#define MUSTEK_UNIT_SPEC	MUSTEK_UNIT_INCHES
+#else
+#define MUSTEK_UNIT_SPEC	MUSTEK_UNIT_PIXELS
+#endif
+
+/*
+ * SCSI command formats
+ */
+
+struct mustek_set_window_cmd {
+	u_char	opcode;			/* 0x04 */
+	u_char	reserved[3];
+	u_char	length;			/* in bytes */
+	u_char	control;
+};
+
+struct mustek_set_window_data {
+#define MUSTEK_LINEART_BACKGROUND	0x00
+#define MUSTEK_HALFTONE_BACKGROUND	0x01
+	u_char	frame_header;		/* unit-defines also apply */
+	u_char	frame_tl_x_0;
+	u_char	frame_tl_x_1;
+	u_char	frame_tl_y_0;
+	u_char	frame_tl_y_1;
+	u_char	frame_br_x_0;
+	u_char	frame_br_x_1;
+	u_char	frame_br_y_0;
+	u_char	frame_br_y_1;
+#if MUSTEK_WINDOWS >= 1
+#define MUSTEK_WINDOW_MASK	0x80
+	u_char	window1_header;		/* unit-defines also apply */
+	u_char	window1_tl_x_0;
+	u_char	window1_tl_x_1;
+	u_char	window1_tl_y_0;
+	u_char	window1_tl_y_1;
+	u_char	window1_br_x_0;
+	u_char	window1_br_x_1;
+	u_char	window1_br_y_0;
+	u_char	window1_br_y_1;
+#endif
+#if MUSTEK_WINDOWS >= 2
+	u_char	window2_header;
+	u_char	window2_tl_x_0;
+	u_char	window2_tl_x_1;
+	u_char	window2_tl_y_0;
+	u_char	window2_tl_y_1;
+	u_char	window2_br_x_0;
+	u_char	window2_br_x_1;
+	u_char	window2_br_y_0;
+	u_char	window2_br_y_1;
+#endif
+#if MUSTEK_WINDOWS >= 3
+	u_char	window3_header;
+	u_char	window3_tl_x_0;
+	u_char	window3_tl_x_1;
+	u_char	window3_tl_y_0;
+	u_char	window3_tl_y_1;
+	u_char	window3_br_x_0;
+	u_char	window3_br_x_1;
+	u_char	window3_br_y_0;
+	u_char	window3_br_y_1;
+#endif
+#if MUSTEK_WINDOWS == 4
+	u_char	window4_header;
+	u_char	window4_tl_x_0;
+	u_char	window4_tl_x_1;
+	u_char	window4_tl_y_0;
+	u_char	window4_tl_y_1;
+	u_char	window4_br_x_0;
+	u_char	window4_br_x_1;
+	u_char	window4_br_y_0;
+	u_char	window4_br_y_1;
+#endif
+};
+
+struct mustek_read_cmd {
+	u_char	opcode;			/* 0x08 */
+	u_char	reserved;
+	u_char	length_2;		/* number of LINES to be read (MSB) */
+	u_char	length_1;		/* number of LINES to be read */
+	u_char	length_0;		/* number of LINES to be read (LSB) */
+	u_char	control;
+};
+
+struct mustek_get_status_cmd {
+	u_char	opcode;			/* 0x0f */
+	u_char	reserved[3];
+	u_char	length;			/* 0x06 */
+	u_char	control;
+};
+
+struct mustek_get_status_data {
+#define MUSTEK_READY 0
+#define MUSTEK_BUSY  -1	
+	u_char	ready_busy;		/* 0 = ready */
+	u_char	bytes_per_line_0;	/* LSB */
+	u_char	bytes_per_line_1;	/* MSB */
+	u_char	lines_0;		/* LSB */
+	u_char	lines_1;
+	u_char	lines_2;		/* MSB */
+};
+
+struct mustek_mode_select_cmd {
+	u_char	opcode;			/* 0x15 */
+	u_char	reserved[2];
+	u_char	length_1;		/* MSB */
+	u_char	length_0;		/* LSB */
+	u_char	control;
+};
+
+/*
+ * resolution settings:
+ *   MFS06000CX:
+ *   1% : 0x01 0x02 ... 0x64
+ *           3    6 ...  300 dpi
+ *   10%: 0x1e 0x3c 0x5a 0x14 0x32 0x50 0x0a 0x28 0x46 0x64
+ *         330  360  390  420  450  480  510  540  570  600 dpi
+ *   MFS12000CX:
+ *   1% : 0x01 0x02 ... 0x64
+ *           6   12 ...  600 dpi
+ *   10%: 0x1e 0x3c 0x5a 0x14 0x32 0x50 0x0a 0x28 0x46 0x64
+ *         660  720  780  840  900  960 1020 1080 1140 1200 dpi
+ */
+struct mustek_mode_select_data {
+#define MUSTEK_MODE_MASK		0x83
+#define MUSTEK_HT_PATTERN_BUILTIN	0x00
+#define MUSTEK_HT_PATTERN_DOWNLOADED	0x10
+	u_char	mode;
+	u_char	resolution;
+	u_char	brightness;
+	u_char	contrast;
+	u_char	grain;			/* 0 = 8x8, .....  5 = 2x2  */
+	u_char	velocity;		/* 0 = fast, ...., 4 = slow */
+	u_char	reserved[2];
+	u_char	paperlength_0;		/* LSB */
+	u_char	paperlength_1;		/* MSB */
+};
+
+struct mustek_start_scan_cmd {
+	u_char	opcode;			/* 0x1b */
+	u_char	reserved[3];
+#define MUSTEK_SCAN_STOP	0x00
+#define MUSTEK_SCAN_START	0x01
+#define MUSTEK_GRAY_FILTER	0x00
+#define MUSTEK_RED_FILTER	0x08
+#define MUSTEK_GREEN_FILTER	0x10
+#define MUSTEK_BLUE_FILTER	0x18
+#define MUSTEK_GRAY_MODE	0x40
+#define MUSTEK_BIT_MODE		0x00
+#define MUSTEK_RES_STEP_1	0x00
+#define MUSTEK_RES_STEP_10	0x80
+	u_char	mode;
+	u_char	control;
+};
+
+#endif /* _SS_MUSTEK_H_ */
diff --git a/sys/dev/scsipi/ss_scanjet.c b/sys/dev/scsipi/ss_scanjet.c
new file mode 100644
index 000000000000..4faebc78a75c
--- /dev/null
+++ b/sys/dev/scsipi/ss_scanjet.c
@@ -0,0 +1,410 @@
+/*	$NetBSD: ss_scanjet.c,v 1.1 1996/02/18 20:32:49 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  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 Kenneth Stailey.
+ * 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.
+ */
+
+/*
+ * special functions for the HP ScanJet IIc and IIcx
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/device.h>
+#include <sys/conf.h>		/* for cdevsw */
+#include <sys/scanio.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_scanner.h>
+#include <scsi/scsiconf.h>
+#include <scsi/ssvar.h>
+
+#define SCANJET_RETRIES 4
+
+int scanjet_get_params __P((struct ss_softc *));
+int scanjet_set_params __P((struct ss_softc *, struct scan_io *));
+int scanjet_trigger_scanner __P((struct ss_softc *));
+int scanjet_read __P((struct ss_softc *, struct buf *));
+
+/* only used internally */
+int scanjet_write __P((struct ss_softc *ss, char *buf, u_int size, int flags));
+int scanjet_set_window __P((struct ss_softc *ss));
+void scanjet_compute_sizes __P((struct ss_softc *));
+
+/*
+ * structure for the special handlers
+ */
+struct ss_special scanjet_special = {
+	scanjet_set_params,
+	scanjet_trigger_scanner,
+	scanjet_get_params,
+	NULL,			/* no special minphys */
+	scanjet_read,		/* scsi 6-byte read */
+	NULL,			/* no "rewind" code (yet?) */
+	NULL,			/* no adf support right now */
+	NULL			/* no adf support right now */
+};
+
+/*
+ * scanjet_attach: attach special functions to ss
+ */
+void
+scanjet_attach(ss, sa)
+	struct ss_softc *ss;
+	struct scsibus_attach_args *sa;
+{
+	struct scsi_link *sc_link = sa->sa_sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("scanjet_attach: start\n"));
+	ss->sio.scan_scanner_type = 0;
+
+	/* first, check the model (which determines nothing yet) */
+
+	if (!bcmp(sa->sa_inqbuf->product, "C1750A", 6)) {
+		ss->sio.scan_scanner_type = HP_SCANJET_IIC;
+		printf(": HP ScanJet IIc\n");
+	}
+	if (!bcmp(sa->sa_inqbuf->product, "C2500A", 6)) {
+		ss->sio.scan_scanner_type = HP_SCANJET_IIC;
+		printf(": HP ScanJet IIcx\n");
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: scanner_type = %d\n",
+	    ss->sio.scan_scanner_type));
+
+	/* now install special handlers */
+	ss->special = &scanjet_special;
+
+	/*
+	 * populate the scanio struct with legal values
+	 */
+	ss->sio.scan_width		= 1200;
+	ss->sio.scan_height		= 1200;
+	ss->sio.scan_x_resolution	= 100;
+	ss->sio.scan_y_resolution	= 100;
+	ss->sio.scan_x_origin		= 0;
+	ss->sio.scan_y_origin		= 0;
+	ss->sio.scan_brightness		= 100;
+	ss->sio.scan_contrast		= 100;
+	ss->sio.scan_quality		= 100;
+	ss->sio.scan_image_mode		= SIM_GRAYSCALE;
+
+	scanjet_compute_sizes(ss);
+}
+
+int
+scanjet_get_params(ss)
+	struct ss_softc *ss;
+{
+
+	return (0);
+}
+
+/*
+ * check the parameters if the scanjet is capable of fulfilling it
+ * but don't send the command to the scanner in case the user wants
+ * to change parameters by more than one call
+ */
+int
+scanjet_set_params(ss, sio)
+	struct ss_softc *ss;
+	struct scan_io *sio;
+{
+	int error;
+
+#if 0
+	/*
+	 * if the scanner is triggered, then rewind it
+	 */
+	if (ss->flags & SSF_TRIGGERED) {
+		error = scanjet_rewind_scanner(ss);
+		if (error)
+			return (error);
+	}
+#endif
+
+	/* size constraints... */
+	if (sio->scan_width == 0				 ||
+	    sio->scan_x_origin + sio->scan_width > 10200 || /* 8.5" */
+	    sio->scan_height == 0				 ||
+	    sio->scan_y_origin + sio->scan_height > 16800)  /* 14" */
+		return (EINVAL);
+
+	/* resolution (dpi)... */
+	if (sio->scan_x_resolution < 100 ||
+	    sio->scan_x_resolution > 400 ||
+	    sio->scan_y_resolution < 100 ||
+	    sio->scan_y_resolution > 400)
+		return (EINVAL);
+
+	switch (sio->scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+	case SIM_GRAYSCALE:
+	case SIM_COLOR:
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	/* change ss_softc to the new values, but save ro-variables */
+	sio->scan_scanner_type = ss->sio.scan_scanner_type;
+	bcopy(sio, &ss->sio, sizeof(struct scan_io));
+
+	scanjet_compute_sizes(ss);
+
+	return (0);
+}
+
+/*
+ * trigger the scanner to start a scan operation
+ * this includes sending the mode- and window-data,
+ * and starting the scanner
+ */
+int
+scanjet_trigger_scanner(ss)
+	struct ss_softc *ss;
+{
+	char escape_codes[20];
+	struct scsi_link *sc_link = ss->sc_link;
+	int error;
+
+	scanjet_compute_sizes(ss);
+
+	/* send parameters */
+	error = scanjet_set_window(ss);
+	if (error) {
+		uprintf("set window failed\n");
+		return (error);
+	}
+
+	/* send "trigger" operation */
+	strcpy(escape_codes, "\033*f0S");
+	error = scanjet_write(ss, escape_codes, strlen(escape_codes), 0);
+	if (error) {
+		uprintf("trigger failed\n");
+		return (error);
+	}
+	
+	return (0);
+}
+
+int
+scanjet_read(ss, bp)
+	struct ss_softc *ss;
+	struct buf *bp;
+{
+	struct scsi_rw_scanner cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+
+	/*
+	 *  Fill out the scsi command
+	 */
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = READ;
+
+	/*
+	 * Handle "fixed-block-mode" tape drives by using the
+	 * block count instead of the length.
+	 */
+	lto3b(bp->b_bcount, cmd.len);
+
+	/*
+	 * go ask the adapter to do all this for us
+	 */
+	if (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd, sizeof(cmd),
+	    (u_char *) bp->b_data, bp->b_bcount, SCANJET_RETRIES, 100000, bp,
+	    SCSI_NOSLEEP | SCSI_DATA_IN) != SUCCESSFULLY_QUEUED)
+		printf("%s: not queued\n", ss->sc_dev.dv_xname);
+	else {
+		ss->sio.scan_window_size -= bp->b_bcount;
+		if (ss->sio.scan_window_size < 0)
+			ss->sio.scan_window_size = 0;
+	}
+
+	return (0);
+}
+
+
+/*
+ * Do a synchronous write.  Used to send control messages.
+ */
+int 
+scanjet_write(ss, buf, size, flags)
+	struct ss_softc *ss;
+	char *buf;
+	u_int size;
+	int flags;
+{
+	struct scsi_rw_scanner cmd;
+
+	/*
+	 * If it's a null transfer, return immediatly
+	 */
+	if (size == 0)
+		return (0);
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = WRITE;
+	lto3b(size, cmd.len);
+	return (scsi_scsi_cmd(ss->sc_link, (struct scsi_generic *) &cmd,
+	    sizeof(cmd), (u_char *) buf, size, 0, 100000, NULL,
+	    flags | SCSI_DATA_OUT));
+}
+
+#ifdef SCANJETDEBUG
+static void show_es(char *es)
+{
+  char *p = es;
+  while (*p) {
+    if (*p == '\033')
+      printf("[Esc]");
+    else
+      printf("%c", *p);
+    ++p;
+  }
+  printf("\n");
+}
+#endif
+
+/* 
+ * simulate SCSI_SET_WINDOW for ScanJets
+ */
+int
+scanjet_set_window(ss)
+	struct ss_softc *ss;
+{
+	char escape_codes[128], *p;
+
+	p = escape_codes;
+
+	sprintf(p, "\033*f%dP", ss->sio.scan_width / 4);
+	p += strlen(p);
+	sprintf(p, "\033*f%dQ", ss->sio.scan_height / 4);
+	p += strlen(p);
+	sprintf(p, "\033*f%dX", ss->sio.scan_x_origin / 4);
+	p += strlen(p);
+	sprintf(p, "\033*f%dY", ss->sio.scan_y_origin / 4);
+	p += strlen(p);
+	sprintf(p, "\033*a%dR", ss->sio.scan_x_resolution);
+	p += strlen(p);
+	sprintf(p, "\033*a%dS", ss->sio.scan_y_resolution);
+	p += strlen(p);
+     
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+		/* use "line art" mode */
+		strcpy(p, "\033*a0T");
+		p += strlen(p);
+		/* make image data be "min-is-white ala PBM */
+		strcpy(p, "\033*a0I");
+		p += strlen(p);
+		break;
+	case SIM_DITHERED_MONOCHROME:
+		/* use dithered mode */
+		strcpy(p, "\033*a3T");
+		p += strlen(p);
+		/* make image data be "min-is-white ala PBM */
+		strcpy(p, "\033*a0I");
+		p += strlen(p);
+		break;
+	case SIM_GRAYSCALE:
+		/* use grayscale mode */
+		strcpy(p, "\033*a4T");
+		p += strlen(p);
+		/* make image data be "min-is-black ala PGM */
+		strcpy(p, "\033*a1I");
+		p += strlen(p);
+		break;
+	case SIM_COLOR:
+		/* use RGB color mode */
+		strcpy(p, "\033*a5T");
+		p += strlen(p);
+		/* make image data be "min-is-black ala PPM */
+		strcpy(p, "\033*a1I");
+		p += strlen(p);
+		/* use pass-through matrix (disable NTSC) */
+		strcpy(p, "\033*u2T");
+		p += strlen(p);
+	}
+
+	sprintf(p, "\033*a%dG", ss->sio.scan_bits_per_pixel);
+	p += strlen(p);
+	sprintf(p, "\033*a%dL", (int)(ss->sio.scan_brightness) - 128);
+	p += strlen(p);
+	sprintf(p, "\033*a%dK", (int)(ss->sio.scan_contrast) - 128);
+	p += strlen(p);
+
+	return (scanjet_write(ss, escape_codes, p - escape_codes, 0));
+}
+
+void
+scanjet_compute_sizes(ss)
+	struct ss_softc *ss;
+{
+
+	/*
+	 * Deal with the fact that the HP ScanJet IIc uses 1/300" not 1/1200"
+	 * as its base unit of measurement.  PINT uses 1/1200" (yes I know
+	 * ScanJet II's use decipoints as well but 1200 % 720 != 0)
+	 */
+	ss->sio.scan_width = (ss->sio.scan_width + 3) & 0xfffffffc;
+	ss->sio.scan_height = (ss->sio.scan_height + 3) & 0xfffffffc;
+
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+		ss->sio.scan_bits_per_pixel = 1;
+		break;
+	case SIM_GRAYSCALE:
+		ss->sio.scan_bits_per_pixel = 8;
+		break;
+	case SIM_COLOR:
+		ss->sio.scan_bits_per_pixel = 24;
+		break;
+	}
+
+	ss->sio.scan_pixels_per_line =
+	    (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+	if (ss->sio.scan_bits_per_pixel == 1)
+		/* pad to byte boundary: */
+		ss->sio.scan_pixels_per_line =
+		    (ss->sio.scan_pixels_per_line + 7) & 0xfffffff8;
+
+	ss->sio.scan_lines =
+	    (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+	ss->sio.scan_window_size = ss->sio.scan_lines *
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+}
diff --git a/sys/dev/scsipi/ssvar.h b/sys/dev/scsipi/ssvar.h
new file mode 100644
index 000000000000..3aea359392df
--- /dev/null
+++ b/sys/dev/scsipi/ssvar.h
@@ -0,0 +1,79 @@
+/*	$NetBSD: ssvar.h,v 1.1 1996/02/18 20:32:50 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
+ *   modified for configurable scanner support by Joachim Koenig
+ *
+ * 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 Kenneth Stailey.
+ * 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.
+ */
+
+/*
+ * SCSI scanner interface description
+ */
+
+/*
+ * Special handlers for impractically different scanner types.
+ * Register NULL for a function if you want to try the real SCSI code
+ * (with quirks table)
+ */
+struct ss_special {
+	int	(*set_params)();
+	int	(*trigger_scanner)();
+	int	(*get_params)();
+	void	(*minphys)(); /* some scanners only send line-multiples */
+	int	(*read)();
+	int	(*rewind_scanner)();
+	int	(*load_adf)();
+	int	(*unload_adf)();
+};
+
+/*
+ * ss_softc has to be declared here, because the device dependant
+ * modules include it
+ */
+struct ss_softc {
+	struct device sc_dev;
+
+	int flags;
+#define SSF_TRIGGERED	0x01	/* read operation has been primed */
+#define	SSF_LOADED	0x02	/* parameters loaded */
+	struct scsi_link *sc_link;	/* contains our targ, lun, etc. */
+	struct scan_io sio;
+	struct buf buf_queue;		/* the queue of pending IO operations */
+	u_int quirks;			/* scanner is only mildly twisted */
+#define SS_Q_GET_BUFFER_SIZE	0x0001	/* poll for available data in ssread() */
+/* truncate to byte boundry is assumed by default unless one of these is set */
+#define SS_Q_PAD_TO_BYTE	0x0002	/* pad monochrome data to byte boundary */
+#define SS_Q_PAD_TO_WORD	0x0004	/* pad monochrome data to word boundary */
+#define SS_Q_THRESHOLD_FOLLOWS_BRIGHTNESS 0x0008
+	struct ss_special *special;	/* special handlers for spec. devices */
+};
+
+/*
+ * define the special attach routines if configured
+ */
+void mustek_attach __P((struct ss_softc *, struct scsibus_attach_args *));
+void scanjet_attach __P((struct ss_softc *, struct scsibus_attach_args *));
diff --git a/sys/scsi/files.scsi b/sys/scsi/files.scsi
index c1060f0c18a2..554ac2ac95c1 100644
--- a/sys/scsi/files.scsi
+++ b/sys/scsi/files.scsi
@@ -1,4 +1,4 @@
-#	$NetBSD: files.scsi,v 1.1 1995/04/17 07:15:40 cgd Exp $
+#	$NetBSD: files.scsi,v 1.2 1996/02/18 20:32:40 mycroft Exp $
 #
 # Config.new file and device description for machine-independent SCSI code.
 # Included by ports that need it.  Ports that usee it must provide
@@ -19,6 +19,10 @@ device	sd at scsibus: disk
 file	scsi/sd.c			sd needs-flag
 device	st at scsibus: tape
 file	scsi/st.c			st needs-flag
+device	ss at scsibus: tape
+file	scsi/ss.c			ss needs-flag
+file	scsi/ss_mustek.c		ss
+file	scsi/ss_scanjet.c		ss
 device	su at scsibus: disk
 file	scsi/su.c			su needs-flag
 device	uk at scsibus: disk
diff --git a/sys/scsi/scsi_conf.h b/sys/scsi/scsi_conf.h
index e56ea5b58933..65a67f410d1e 100644
--- a/sys/scsi/scsi_conf.h
+++ b/sys/scsi/scsi_conf.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: scsi_conf.h,v 1.1 1996/02/14 21:47:19 christos Exp $	*/
+/*	$NetBSD: scsi_conf.h,v 1.2 1996/02/18 20:32:41 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1995 Christos Zoulas.  All rights reserved.
@@ -34,6 +34,9 @@
 #include "ch.h"
 cdev_decl(ch);
 
+#include "ss.h"
+cdev_decl(ss);
+
 #include "sd.h"
 bdev_decl(sd);
 cdev_decl(sd);
diff --git a/sys/scsi/scsi_scanner.h b/sys/scsi/scsi_scanner.h
new file mode 100644
index 000000000000..0db8028c2f69
--- /dev/null
+++ b/sys/scsi/scsi_scanner.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
+ *   modified for configurable scanner support by Joachim Koenig
+ *
+ * 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 Kenneth Stailey.
+ * 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.
+ */
+
+/*
+ * SCSI scanner interface description
+ */
+
+#ifndef	_SCSI_SCANNER_H_
+#define _SCSI_SCANNER_H_
+
+/* SCSI scanner commands */
+#define GET_IMAGE_STATUS	0x0f
+#define READ_BIG		0x28
+#define WRITE_BIG		0x2a
+#define OBJECT_POSITION		0x31
+#define GET_BUFFER_STATUS	0x34
+
+/* generic scanner command formats */
+
+struct scsi_rw_scanner {
+#define	READ			0x08
+#define WRITE			0x0a
+	u_char	opcode;
+	u_char	byte2;
+#define	SRW_FIXED		0x01
+	u_char	len[3];
+	u_char	control;
+};
+
+struct scsi_start_stop {
+	u_char	opcode;
+	u_char	byte2;
+	u_char	unused[2];
+	u_char  how;
+#define	SSS_STOP		0x00
+#define	SSS_START		0x01
+#define	SSS_LOEJ		0x02
+	u_char	control;
+};
+
+struct scsi_set_window {
+#define SET_WINDOW		0x24 /* set params of image area and windows */
+#define GET_WINDOW		0x25
+	u_char	opcode;
+	u_char	byte2;
+	u_char	reserved[4];
+	u_char  len[3];
+	u_char	control;
+};
+
+struct scsi_window_header {
+	u_char	reserved[6];
+	u_char  len[2];		    /* MSB-LSB */
+};
+
+struct scsi_window_data {
+	u_char	window_id;	    /* must be zero */
+	u_char	res1:7;
+	u_char	auto_bit:1;
+	u_char	x_res[2];
+	u_char	y_res[2];
+	u_char	x_org[4];
+	u_char	y_org[4];
+	u_char	width[4];
+	u_char	length[4];
+	u_char	brightness;
+	u_char	threshold;
+	u_char	contrast;
+	u_char	image_comp;	    /* image composition (data type) */
+	u_char	bits_per_pixel;
+	u_char	halftone_pattern[2];
+	u_char	rif:1;		    /* reverse image format (mono negative) */
+	u_char  res2:4;
+	u_char	pad_type:3;
+	u_char	bit_ordering[2];
+	u_char	compression_type;
+	u_char	compression_arg;
+	u_char	res3[6];
+};
+
+/* mustek scsi commands */
+
+#define MUSTEK_SET_WINDOW	0x04	/* set image area and windows */
+#define MUSTEK_ADF		0x10	/* ADF and backtracking selection */
+#define MUSTEK_LUT		0x55	/* look up table download */
+
+#endif /* _SCSI_SCANNER_H_ */
diff --git a/sys/scsi/scsiconf.c b/sys/scsi/scsiconf.c
index 613ff9ac1a6f..fe4e09d3cd2e 100644
--- a/sys/scsi/scsiconf.c
+++ b/sys/scsi/scsiconf.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: scsiconf.c,v 1.48 1996/02/14 21:47:27 christos Exp $	*/
+/*	$NetBSD: scsiconf.c,v 1.49 1996/02/18 20:32:43 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1994 Charles Hannum.  All rights reserved.
@@ -76,7 +76,6 @@
  */
 void scsi_probedev __P((struct scsibus_softc *, int, int));
 int scsi_probe_bus __P((int bus, int target, int lun));
-void scsi_strvis __P((u_char *, u_char *, int));
 
 struct scsi_device probe_switch = {
 	NULL,
diff --git a/sys/scsi/scsiconf.h b/sys/scsi/scsiconf.h
index 255dee96b203..efda1dde6bf1 100644
--- a/sys/scsi/scsiconf.h
+++ b/sys/scsi/scsiconf.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: scsiconf.h,v 1.27 1996/02/14 21:47:32 christos Exp $	*/
+/*	$NetBSD: scsiconf.h,v 1.28 1996/02/18 20:32:45 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1993, 1994, 1995 Charles Hannum.  All rights reserved.
@@ -286,6 +286,7 @@ void show_scsi_xs __P((struct scsi_xfer *));
 void show_scsi_cmd __P((struct scsi_xfer *));
 void show_mem __P((u_char *, int));
 int scsi_probe_busses __P((int, int, int));
+void scsi_strvis __P((u_char *, u_char *, int));
 
 
 void lto3b __P((u_int32_t val, u_int8_t *bytes));
diff --git a/sys/scsi/ss.c b/sys/scsi/ss.c
new file mode 100644
index 000000000000..c987eb8e0a60
--- /dev/null
+++ b/sys/scsi/ss.c
@@ -0,0 +1,491 @@
+/*	$NetBSD: ss.c,v 1.1 1996/02/18 20:32:46 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
+ *   modified for configurable scanner support by Joachim Koenig
+ *
+ * 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 Kenneth Stailey.
+ * 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.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/device.h>
+#include <sys/conf.h>		/* for cdevsw */
+#include <sys/scanio.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_scanner.h>
+#include <scsi/scsiconf.h>
+#include <scsi/ssvar.h>
+
+#include <scsi/ss_mustek.h>
+
+#define SSMODE(z)	( minor(z)       & 0x03)
+#define SSUNIT(z)	((minor(z) >> 4)       )
+
+/*
+ * If the mode is 3 (e.g. minor = 3,7,11,15)
+ * then the device has been openned to set defaults
+ * This mode does NOT ALLOW I/O, only ioctls
+ */
+#define MODE_REWIND	0
+#define MODE_NONREWIND	1
+#define MODE_CONTROL	3
+
+int ssmatch __P((struct device *, void *, void *));
+void ssattach __P((struct device *, struct device *, void *));
+
+struct cfdriver sscd = {
+	NULL, "ss", ssmatch, ssattach, DV_DULL, sizeof(struct ss_softc)
+};
+
+void    ssstrategy __P((struct buf *));
+void    ssstart __P((void *));
+
+struct scsi_device ss_switch = {
+	NULL,
+	ssstart,
+	NULL,
+	NULL,
+};
+
+struct scsi_inquiry_pattern ss_patterns[] = {
+	{T_SCANNER, T_FIXED,
+	 "",         "",                 ""},
+	{T_SCANNER, T_REMOV,
+	 "",         "",                 ""},
+	{T_PROCESSOR, T_FIXED,
+	 "HP      ", "C1750A          ", ""},
+	{T_PROCESSOR, T_FIXED,
+	 "HP      ", "C2500A          ", ""},
+};
+
+int
+ssmatch(parent, match, aux)
+	struct device *parent;
+	void *match, *aux;
+{
+	struct scsibus_attach_args *sa = aux;
+	int priority;
+
+	(void)scsi_inqmatch(sa->sa_inqbuf,
+	    (caddr_t)ss_patterns, sizeof(ss_patterns)/sizeof(ss_patterns[0]),
+	    sizeof(ss_patterns[0]), &priority);
+	return (priority);
+}
+
+/*
+ * The routine called by the low level scsi routine when it discovers
+ * A device suitable for this driver
+ * If it is a know special, call special attach routine to install
+ * special handlers into the ss_softc structure
+ */
+void
+ssattach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct ss_softc *ss = (void *)self;
+	struct scsibus_attach_args *sa = aux;
+	struct scsi_link *sc_link = sa->sa_sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB2, ("ssattach: "));
+
+	/*
+	 * Store information needed to contact our base driver
+	 */
+	ss->sc_link = sc_link;
+	sc_link->device = &ss_switch;
+	sc_link->device_softc = ss;
+	sc_link->openings = 1;
+
+	/*
+	 * look for non-standard scanners with help of the quirk table
+	 * and install functions for special handling
+	 */
+	SC_DEBUG(sc_link, SDEV_DB2, ("ssattach:\n"));
+	if (!bcmp(sa->sa_inqbuf->vendor, "MUSTEK  ", 8))
+		mustek_attach(ss, sa);
+	if (!bcmp(sa->sa_inqbuf->vendor, "HP      ", 8))
+		scanjet_attach(ss, sa);
+	if (ss->special == NULL) {
+		/* XXX add code to restart a SCSI2 scanner, if any */
+	}
+
+	/*
+	 * Set up the buf queue for this device
+	 */
+	ss->buf_queue.b_active = 0;
+	ss->buf_queue.b_actf = 0;
+	ss->buf_queue.b_actb = &ss->buf_queue.b_actf;
+}
+
+/*
+ * open the device.
+ */
+int
+ssopen(dev, flag, mode, p)
+	dev_t dev;
+	int flag
+	int mode;
+	struct proc *p;
+{
+	int unit;
+	u_int mode;
+	int error = 0;
+	struct ss_softc *ss;
+	struct scsi_link *sc_link;
+
+	unit = SSUNIT(dev);
+	if (unit >= sscd.cd_ndevs)
+		return (ENXIO);
+	ss = sscd.cd_devs[unit];
+	if (!ss)
+		return (ENXIO);
+
+	mode = SSMODE(dev);
+	sc_link = ss->sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("open: dev=0x%x (unit %d (of %d))\n", dev,
+	    unit, sscd.cd_ndevs));
+
+	if (sc_link->flags & SDEV_OPEN) {
+		printf("%s: already open\n", ss->sc_dev.dv_xname);
+		return (EBUSY);
+	}
+
+	/*
+	 * Catch any unit attention errors.
+	 *
+	 * SCSI_IGNORE_MEDIA_CHANGE: when you have an ADF, some scanners
+	 * consider paper to be a changeable media
+	 *
+	 */
+	error = scsi_test_unit_ready(sc_link,
+	    SCSI_IGNORE_MEDIA_CHANGE | SCSI_IGNORE_ILLEGAL_REQUEST |
+	    (mode == MODE_CONTROL ? SCSI_IGNORE_NOT_READY : 0));
+	if (error)
+		goto bad;
+
+	sc_link->flags |= SDEV_OPEN;	/* unit attn are now errors */
+
+	/*
+	 * If the mode is 3 (e.g. minor = 3,7,11,15)
+	 * then the device has been opened to set defaults
+	 * This mode does NOT ALLOW I/O, only ioctls
+	 */
+	if (mode == MODE_CONTROL)
+		return (0);
+
+	SC_DEBUG(sc_link, SDEV_DB2, ("open complete\n"));
+	return (0);
+
+bad:
+	sc_link->flags &= ~SDEV_OPEN;
+	return (error);
+}
+
+/*
+ * close the device.. only called if we are the LAST
+ * occurence of an open device
+ */
+int
+ssclose(dev)
+	dev_t dev;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(dev)];
+	int error;
+
+	SC_DEBUG(ss->sc_link, SDEV_DB1, ("closing\n"));
+
+	if (SSMODE(dev) == MODE_REWIND) {
+		if (ss->special->rewind_scanner) {
+			/* call special handler to rewind/abort scan */
+			error = (ss->special->rewind_scanner)(ss);
+			if (error)
+				return (error);
+		} else {
+			/* XXX add code to restart a SCSI2 scanner, if any */
+			ss->sio.scan_window_size = 0;
+		}
+		ss->flags &= ~SSF_TRIGGERED;
+	}
+	ss->sc_link->flags &= ~SDEV_OPEN;
+
+	return (0);
+}
+
+/*
+ * trim the size of the transfer if needed,
+ * called by physio
+ * basically the smaller of our min and the scsi driver's
+ * minphys
+ */
+void
+ssminphys(bp)
+	struct buf *bp;
+{
+	register struct ss_softc *ss = sscd.cd_devs[SSUNIT(bp->b_dev)];
+
+	(ss->sc_link->adapter->scsi_minphys)(bp);
+
+	/*
+	 * trim the transfer further for special devices this is
+	 * because some scanners only read multiples of a line at a
+	 * time, also some cannot disconnect, so the read must be
+	 * short enough to happen quickly
+	 */
+	if (ss->special->minphys)
+		(ss->special->minphys)(ss, bp);
+}
+
+/*
+ * Do a read on a device for a user process.
+ * Prime scanner at start of read, check uio values, call ssstrategy
+ * via physio for the actual transfer.
+ */
+int
+ssread(dev, uio, flag)
+	dev_t dev;
+	struct uio *uio;
+	int flag;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(dev)];
+	int error;
+
+	/* if the scanner has not yet been started, do it now */
+	if (!(ss->flags & SSF_TRIGGERED)) {
+		if (ss->special->trigger_scanner) {
+			error = (ss->special->trigger_scanner)(ss);
+			if (error)
+				return (error);
+		}
+		ss->flags |= SSF_TRIGGERED;
+	}
+
+	/* in any case, trim it down to window_size */
+	if (uio->uio_iov->iov_len > ss->sio.scan_window_size) {
+		uio->uio_iov->iov_len = ss->sio.scan_window_size;
+
+		SC_DEBUG(ss->sc_link, SDEV_DB1,
+		    ("ssread: bytes wanted exceeds window size\n"));
+		SC_DEBUG(ss->sc_link, SDEV_DB1,
+		    ("ssread: xfer reduced to %d\n", uio->uio_iov->iov_len));
+	}
+
+	/*
+	 * EOF detection
+	 */
+
+	if (ss->sio.scan_window_size == 0) {
+		uio->uio_iov++;
+		uio->uio_iovcnt--;
+		return (0);
+	}
+
+	return (physio(ssstrategy, NULL, dev, B_READ, ssminphys, 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.
+ */
+void
+ssstrategy(bp)
+	struct buf *bp;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(bp->b_dev)];
+	struct buf *dp;
+	int s;
+
+	SC_DEBUG(ss->sc_link, SDEV_DB1,
+	    ("ssstrategy %d bytes @ blk %d\n", bp->b_bcount, bp->b_blkno));
+
+	/*
+	 * If it's a null transfer, return immediatly
+	 */
+	if (bp->b_bcount == 0)
+		goto done;
+
+	s = splbio();
+
+	/*
+	 * Place it in the queue of activities for this scanner
+	 * at the end (a bit silly because we only have on user..
+	 * (but it could fork()))
+	 */
+	dp = &ss->buf_queue;
+	bp->b_actf = NULL;
+	bp->b_actb = dp->b_actb;
+	*dp->b_actb = bp;
+	dp->b_actb = &bp->b_actf;
+
+	/*
+	 * Tell the device to get going on the transfer if it's
+	 * not doing anything, otherwise just wait for completion
+	 * (All a bit silly if we're only allowing 1 open but..)
+	 */
+	ssstart(ss);
+
+	splx(s);
+	return;
+bad:
+	bp->b_flags |= B_ERROR;
+done:
+	/*
+	 * Correctly set the buf to indicate a completed xfer
+	 */
+	bp->b_resid = bp->b_bcount;
+	biodone(bp);
+}
+
+/*
+ * ssstart 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 required. 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 (ssstrategy)
+ *
+ * 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.
+ * ssstart() is called at splbio
+ */
+void
+ssstart(v)
+	void *v;
+{
+	struct ss_softc *ss = v;
+	struct scsi_link *sc_link = ss->sc_link;
+	register struct buf *bp, *dp;
+
+	SC_DEBUG(sc_link, SDEV_DB2, ("ssstart "));
+	/*
+	 * See if there is a buf to do and we are not already
+	 * doing one
+	 */
+	while (sc_link->openings > 0) {
+		/* if a special awaits, let it proceed first */
+		if (sc_link->flags & SDEV_WAITING) {
+			sc_link->flags &= ~SDEV_WAITING;
+			wakeup((caddr_t)sc_link);
+			return;
+		}
+
+		/*
+		 * See if there is a buf with work for us to do..
+		 */
+		dp = &ss->buf_queue;
+		if ((bp = dp->b_actf) == NULL)
+			return;
+		if ((dp = bp->b_actf) != NULL)
+			dp->b_actb = bp->b_actb;
+		else
+			ss->buf_queue.b_actb = bp->b_actb;
+		*bp->b_actb = dp;
+
+		if (ss->special->read) {
+			(ss->special->read)(ss, bp);
+		} else {
+			/* generic scsi2 scanner read */
+			/* XXX add code for SCSI2 scanner read */
+		}
+	}
+}
+
+/*
+ * Perform special action on behalf of the user;
+ * knows about the internals of this device
+ */
+int
+ssioctl(dev, cmd, addr, flag, p)
+	dev_t dev;
+	u_long cmd;
+	caddr_t addr;
+	int flag;
+	struct proc *p;
+{
+	struct ss_softc *ss = sscd.cd_devs[SSUNIT(dev)];
+	int error = 0;
+	int unit;
+	struct scan_io *sio;
+
+	switch (cmd) {
+	case SCIOCGET:
+		if (ss->special->get_params) {
+			/* call special handler */
+			if ((error = (ss->special->get_params)(ss)) > 0)
+				return (error);
+		} else {
+			/* XXX add code for SCSI2 scanner, if any */
+			return (EOPNOTSUPP);
+		}
+		bcopy(&ss->sio, addr, sizeof(struct scan_io));
+		break;
+	case SCIOCSET:
+		sio = (struct scan_io *)addr;
+
+		if (ss->special->set_params) {
+			/* call special handler */
+			if ((error = (ss->special->set_params)(ss, sio)) > 0)
+				return (error);
+		} else {
+			/* XXX add code for SCSI2 scanner, if any */
+			return (EOPNOTSUPP);
+		}
+		break;
+	case SCIOCRESTART:
+		if (ss->special->rewind_scanner ) {
+			/* call special handler */
+			if ((error = (ss->special->rewind_scanner)(ss)) > 0)
+				return (error);
+		} else
+			/* XXX add code for SCSI2 scanner, if any */
+			return (EOPNOTSUPP);
+		ss->flags &= ~SSF_TRIGGERED;
+		break;
+#ifdef NOTYET
+	case SCAN_USE_ADF:
+		break;
+#endif
+	default:
+		if (SSMODE(dev) != MODE_CONTROL)
+			return (ENOTTY);
+		return (scsi_do_ioctl(ss->sc_link, dev, cmd, addr, flag, p));
+	}
+	return (error);
+}
diff --git a/sys/scsi/ss_mustek.c b/sys/scsi/ss_mustek.c
new file mode 100644
index 000000000000..7be6628fe01f
--- /dev/null
+++ b/sys/scsi/ss_mustek.c
@@ -0,0 +1,623 @@
+/*	$NetBSD: ss_mustek.c,v 1.1 1996/02/18 20:32:47 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Joachim Koenig-Baltes.  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 Joachim Koenig-Baltes.
+ * 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.
+ */
+
+/*
+ * special driver for MUSTEK flatbed scanners MFS 06000CX and MFS 12000CX
+ * these scanners come with their own scsi card, containing an NCR53C400
+ * SCSI controller chip. I'm in the progress of writing a driver for this
+ * card to work under NetBSD-current. I've hooked it up to a Seagate ST01
+ * hostadapter in the meantime, giving 350KB/sec for higher resolutions!
+ *
+ * I tried to connect it to my Adaptec 1542B, but with no success. It seems,
+ * it does not like synchronous negotiation between Hostadapter and other
+ * targets, but I could not turn this off for the 1542B.
+ *
+ * There is also an other reason why you would not like to connect it to your
+ * favourite SCSI host adapter: The Mustek DOES NOT DISCONNECT. It will block
+ * other traffic from the bus while a transfer is active.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/device.h>
+#include <sys/conf.h>		/* for cdevsw */
+#include <sys/scanio.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_scanner.h>
+#include <scsi/scsiconf.h>
+#include <scsi/ssvar.h>
+#include <scsi/ss_mustek.h>
+
+#define MUSTEK_RETRIES 4
+
+int mustek_get_params __P((struct ss_softc *));
+int mustek_set_params __P((struct ss_softc *, struct scan_io *));
+int mustek_trigger_scanner __P((struct ss_softc *));
+void mustek_minphys __P((struct ss_softc *, struct buf *));
+int mustek_read __P((struct ss_softc *, struct buf *));
+int mustek_rewind_scanner __P((struct ss_softc *));
+
+/* only used internally */
+int mustek_get_status __P((struct ss_softc *, int, int));
+void mustek_compute_sizes __P((struct ss_softc *));
+
+/*
+ * structure for the special handlers
+ */
+struct ss_special mustek_special = {
+	mustek_set_params,
+	mustek_trigger_scanner,
+	mustek_get_params,
+	mustek_minphys,
+	mustek_read,
+	mustek_rewind_scanner,
+	NULL,			/* no adf support right now */
+	NULL			/* no adf support right now */
+};
+
+/*
+ * mustek_attach: attach special functions to ss
+ */
+void
+mustek_attach(ss, sa)
+	struct ss_softc *ss;
+	struct scsibus_attach_args *sa;
+{
+	struct scsi_link *sc_link = sa->sa_sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: start\n"));
+	ss->sio.scan_scanner_type = 0;
+
+	/* first, check the model which determines resolutions */
+	if (!bcmp(sa->sa_inqbuf->product, "MFS-06000CX", 11)) {
+		ss->sio.scan_scanner_type = MUSTEK_06000CX;
+		printf(": Mustek 6000CX Flatbed 3-pass color scanner, 3 - 600 dpi\n");
+	}
+	if (!bcmp(sa->sa_inqbuf->product, "MFS-12000CX", 11)) {
+		ss->sio.scan_scanner_type = MUSTEK_12000CX;
+		printf(": Mustek 12000CX Flatbed 3-pass color scanner, 6 - 1200 dpi\n");
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: scanner_type = %d\n",
+	    ss->sio.scan_scanner_type));
+
+	/* install special handlers */
+	ss->special = &mustek_special;
+
+	/*
+	 * populate the scanio struct with legal values
+	 * the default should come from user space
+	 */
+	ss->sio.scan_width		= 1200;
+	ss->sio.scan_height		= 1200;
+	ss->sio.scan_x_resolution	= 99;
+	ss->sio.scan_y_resolution	= 99;
+	ss->sio.scan_x_origin		= 0;
+	ss->sio.scan_y_origin		= 0;
+	ss->sio.scan_brightness		= 100;
+	ss->sio.scan_contrast		= 100;
+	ss->sio.scan_quality		= 100;
+	ss->sio.scan_image_mode		= SIM_GRAYSCALE;
+
+	mustek_compute_sizes(ss);
+}
+
+int
+mustek_get_params (ss)
+	struct ss_softc *ss;
+{
+
+	return (0);
+}
+
+/*
+ * check the parameters if the mustek is capable of fulfilling it
+ * but don't send the command to the scanner in case the user wants
+ * to change parameters by more than one call
+ */
+int
+mustek_set_params(ss, sio)
+	struct ss_softc *ss;
+	struct scan_io *sio;
+{
+	int error;
+
+	/*
+	 * if the scanner is triggered, then rewind it
+	 */
+	if (ss->flags & SSF_TRIGGERED) {
+		error = mustek_rewind_scanner(ss);
+		if (error)
+			return (error);
+	}
+
+	/* size constraints: 8.5" horizontally and 14" vertically */
+#ifdef MUSTEK_INCH_SPEC
+	/* sizes must be a multiple of 1/8" */
+	sio->scan_x_origin -= sio->scan_x_origin % 150;
+	sio->scan_y_origin -= sio->scan_y_origin % 150;
+	sio->scan_width -= sio->scan_width % 150;
+	sio->scan_height -= sio->scan_height % 150;
+#endif
+	if (sio->scan_width == 0 ||
+	    sio->scan_x_origin + sio->scan_width > 10200 ||
+	    sio->scan_height == 0 ||
+	    sio->scan_y_origin + sio->scan_height > 16800)
+		return (EINVAL);
+
+	/*
+	 * for now, only realize the values for the MUSTEK_06000CX
+	 * in the future, values for the MUSTEK_12000CX will be implemented
+	 */
+
+	/*
+	 * resolution (dpi) must be <= 300 and a multiple of 3 or
+	 * between 300 and 600 and a multiple of 30
+	 */
+	sio->scan_x_resolution -= sio->scan_x_resolution <= 300 ?
+	    sio->scan_x_resolution % 3 : sio->scan_x_resolution % 30;
+	sio->scan_y_resolution -= sio->scan_y_resolution <= 300 ?
+	    sio->scan_y_resolution % 3 : sio->scan_y_resolution % 30;
+	if (sio->scan_x_resolution < 3 || sio->scan_x_resolution > 600 ||
+	    sio->scan_x_resolution != sio->scan_y_resolution)
+		return (EINVAL);
+
+	/* assume brightness values are between 64 and 136 in steps of 3 */
+	sio->scan_brightness -= (sio->scan_brightness - 64) % 3;
+	if (sio->scan_brightness < 64 || sio->scan_brightness > 136)
+		return (EINVAL);
+
+	/* contrast values must be between 16 and 184 in steps of 7 */
+	sio->scan_contrast -= (sio->scan_contrast - 16) % 7;
+	if (sio->scan_contrast < 16 || sio->scan_contrast > 184)
+		return (EINVAL);
+
+	/*
+	 * velocity: between 0 (fast) and 4 (slow) which will be mapped
+	 * to 100% = 4, 80% = 3, 60% = 2, 40% = 1, 20% = 0
+	 * must be a multiple of 20
+	 */
+	sio->scan_quality -= sio->scan_quality % 20;
+	if (sio->scan_quality < 20 || sio->scan_quality > 100)
+		return (EINVAL);
+
+	switch (sio->scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+	case SIM_GRAYSCALE:
+	case SIM_RED:
+	case SIM_GREEN:
+	case SIM_BLUE:
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	/* change ss_softc to the new values, but save ro-variables */
+	sio->scan_scanner_type = ss->sio.scan_scanner_type;
+	bcopy(sio, &ss->sio, sizeof(struct scan_io));
+
+	mustek_compute_sizes(ss);
+
+	return (0);
+}
+
+/*
+ * trim the requested transfer to a multiple of the line size
+ * this is called only from ssread() which guarantees, scanner is triggered
+ * In the future, it will trim the transfer to not read to much at a time
+ * because the mustek cannot disconnect. It will be calculated by the
+ * resolution, the velocity and the number of bytes per line.
+ */
+void
+mustek_minphys(ss, bp)
+	struct ss_softc *ss;
+	struct buf *bp;
+{
+	struct scsi_link *sc_link = ss->sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_minphys: before: %d\n",
+	    bp->b_bcount));
+	bp->b_bcount -= bp->b_bcount %
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_minphys: after:  %d\n",
+	    bp->b_bcount));
+}
+
+/*
+ * trigger the scanner to start a scan operation
+ * this includes sending the mode- and window-data, starting the scanner
+ * and getting the image size info
+ */
+int
+mustek_trigger_scanner(ss)
+	struct ss_softc *ss;
+{
+	struct mustek_mode_select_cmd mode_cmd;
+	struct mustek_mode_select_data mode_data;
+	struct mustek_set_window_cmd window_cmd;
+	struct mustek_set_window_data window_data;
+	struct mustek_start_scan_cmd start_scan_cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+#ifndef MUSTEK_INCH_SPEC
+	int pixel_tlx, pixel_tly, pixel_brx, pixel_bry, paperlength;
+#endif
+	int error;
+
+	mustek_compute_sizes(ss);
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner\n"));
+
+	/*
+	 * set the window params and send the scsi command
+	 */
+	bzero(&window_cmd, sizeof(window_cmd));
+	window_cmd.opcode = MUSTEK_SET_WINDOW;
+	window_cmd.length = sizeof(window_data);
+
+	bzero(&window_data, sizeof(window_data));
+	window_data.frame_header = MUSTEK_LINEART_BACKGROUND | MUSTEK_UNIT_SPEC;
+#ifdef MUSTEK_INCH_SPEC
+	/* the positional values are all 1 byte because 256 / 8 = 32" */
+	window_data.frame_tl_x_0 = ss->sio.scan_x_origin / 150;
+	window_data.frame_tl_x_1 = 0;
+	window_data.frame_tl_y_0 = ss->sio.scan_y_origin / 150;
+	window_data.frame_tl_y_1 = 0;
+	window_data.frame_br_x_0 = (ss->sio.scan_x_origin +
+				    ss->sio.scan_width) / 150;
+	window_data.frame_br_x_1 = 0;
+	window_data.frame_br_y_0 = (ss->sio.scan_y_origin +
+				    ss->sio.scan_height) / 150;
+	window_data.frame_br_y_1 = 0;
+#else
+	pixel_tlx = (ss->sio.scan_x_origin * ss->sio.scan_x_resolution) / 1200;
+	window_data.frame_tl_x_0 = pixel_tlx & 0xff;
+	window_data.frame_tl_x_1 = (pixel_tlx >> 8) & 0xff;
+	pixel_tly = (ss->sio.scan_y_origin * ss->sio.scan_y_resolution) / 1200;
+	window_data.frame_tl_y_0 = pixel_tly & 0xff;
+	window_data.frame_tl_y_1 = (pixel_tly >> 8) & 0xff;
+	pixel_brx = pixel_tlx +
+	    (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+	window_data.frame_br_x_0 = pixel_brx & 0xff;
+	window_data.frame_br_x_1 = (pixel_brx >> 8) & 0xff;
+	pixel_bry = pixel_tly +
+	    (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+	window_data.frame_br_y_0 = pixel_bry & 0xff;
+	window_data.frame_br_y_1 = (pixel_bry >> 8) & 0xff;
+#endif
+
+#if MUSTEK_WINDOWS >= 1
+	window_data.window1_header = MUSTEK_WINDOW_MASK | MUSTEK_UNIT_SPEC;
+	window_data.window1_tl_x_0 = window_data.frame_tl_x_0;
+	window_data.window1_tl_x_1 = window_data.frame_tl_x_1;
+	window_data.window1_tl_y_0 = window_data.frame_tl_y_0;
+	window_data.window1_tl_y_1 = window_data.frame_tl_y_1;
+	window_data.window1_br_x_0 = window_data.frame_br_x_0;
+	window_data.window1_br_x_1 = window_data.frame_br_x_1;
+	window_data.window1_br_y_0 = window_data.frame_br_y_0;
+	window_data.window1_br_y_1 = window_data.frame_br_y_1;
+#endif
+
+	/* send the set window command to the scanner */
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_set_parms: set_window\n"));
+	error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &window_cmd,
+	    sizeof(window_cmd), (u_char *) &window_data, sizeof(window_data),
+	    MUSTEK_RETRIES, 5000, NULL, SCSI_DATA_OUT);
+	if (error)
+		return (error);
+
+	/*
+	 * do what it takes to actualize the mode
+	 */
+	bzero(&mode_cmd, sizeof(mode_cmd));
+	mode_cmd.opcode = MUSTEK_MODE_SELECT;
+	mode_cmd.length_0 = sizeof(mode_data);
+
+	bzero(&mode_data, sizeof(mode_data));
+	mode_data.mode =
+	    MUSTEK_MODE_MASK | MUSTEK_HT_PATTERN_BUILTIN | MUSTEK_UNIT_SPEC;
+	if (ss->sio.scan_x_resolution <= 300) {
+		mode_data.resolution = ss->sio.scan_x_resolution / 3;
+	} else {
+		/*
+		 * the resolution values is computed by modulo 100, but not
+		 * for 600dpi, where the value is 100 (a bit tricky, but ...)
+		 */
+		mode_data.resolution =
+		    ((ss->sio.scan_x_resolution - 1) % 100) + 1;
+	}
+	mode_data.brightness = (ss->sio.scan_brightness - 64) / 3;
+	mode_data.contrast = (ss->sio.scan_contrast - 16) / 7;
+	mode_data.grain = 0;
+	mode_data.velocity = ss->sio.scan_quality / 20 - 1;
+#ifdef MUSTEK_INCH_SPEC
+	mode_data.paperlength_0 = 14 * 8;	/* 14" */
+	mode_data.paperlength_1 = 0;
+#else
+	paperlength = 14 * ss->sio.scan_y_resolution; /* 14" */
+	mode_data.paperlength_0 = paperlength & 0xff;
+	mode_data.paperlength_1 = (paperlength >> 8) & 0xff;
+#endif
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: mode_select\n"));
+	/* send the command to the scanner */
+	error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &mode_cmd,
+	    sizeof(mode_cmd), (u_char *) &mode_data, sizeof(mode_data),
+	    MUSTEK_RETRIES, 5000, NULL, SCSI_DATA_OUT);
+	if (error)
+		return (error);
+
+	/*
+	 * now construct and send the start command
+	 */
+	bzero(&start_scan_cmd,sizeof(start_scan_cmd));
+	start_scan_cmd.opcode = MUSTEK_START_STOP;
+	start_scan_cmd.mode = MUSTEK_SCAN_START;
+	if (ss->sio.scan_x_resolution <= 300)
+		start_scan_cmd.mode |= MUSTEK_RES_STEP_1;
+	else
+		start_scan_cmd.mode |= MUSTEK_RES_STEP_10;
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+		start_scan_cmd.mode |= MUSTEK_BIT_MODE | MUSTEK_GRAY_FILTER;
+		break;
+	case SIM_GRAYSCALE:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_GRAY_FILTER;
+		break;
+	case SIM_RED:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_RED_FILTER;
+		break;
+	case SIM_GREEN:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_GREEN_FILTER;
+		break;
+	case SIM_BLUE:
+		start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_BLUE_FILTER;
+		break;
+	}
+
+	/* send the command to the scanner */
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: start_scan\n"));
+	error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &start_scan_cmd,
+	    sizeof(start_scan_cmd), NULL, 0,
+	    MUSTEK_RETRIES, 5000, NULL, 0);
+	if (error)
+		return (error);
+
+	/*
+	 * now check if scanner ready this time with update of size info
+	 * we wait here so that if the user issues a read directly afterwards,
+	 * the scanner will respond directly (otherwise we had to sleep with
+	 * a buffer locked in memory)
+	 */
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: get_status\n"));
+	error = mustek_get_status(ss, 60, 1);
+	if (error)
+		return (error);
+
+	return (0);
+}
+
+/*
+ * stop a scan operation in progress
+ */
+int
+mustek_rewind_scanner(ss)
+	struct ss_softc *ss;
+{
+	struct mustek_start_scan_cmd cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+	int error;
+
+	if (ss->sio.scan_window_size != 0) {
+		/*
+		 * only if not all data has been read, the scanner has to be
+		 * stopped
+		 */
+		bzero(&cmd, sizeof(cmd));
+		cmd.opcode = MUSTEK_START_STOP;
+		cmd.mode = MUSTEK_SCAN_STOP;
+
+		/* send the command to the scanner */
+		SC_DEBUG(sc_link, SDEV_DB1,
+		    ("mustek_rewind_scanner: stop_scan\n"));
+		error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
+		    sizeof(cmd), NULL, 0, MUSTEK_RETRIES, 5000, NULL, 0);
+		if (error)
+			return (error);
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_rewind_scanner: end\n"));
+
+	return (0);
+}
+
+/*
+ * read the requested number of bytes/lines from the scanner
+ */
+int
+mustek_read(ss, bp)
+	struct ss_softc *ss;
+	struct buf *bp;
+{
+	struct mustek_read_cmd cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+	u_long lines_to_read;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_read: start\n"));
+
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = MUSTEK_READ;
+
+	/* instead of the bytes, the mustek wants the number of lines */
+	lines_to_read = bp->b_bcount /
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_read: read %d lines\n",
+	    lines_to_read));
+	cmd.length_0 = lines_to_read & 0xff;
+	cmd.length_1 = (lines_to_read >> 8) & 0xff;
+	cmd.length_2 = (lines_to_read >> 16) & 0xff;
+
+	/*
+	 * go ask the adapter to do all this for us
+	 */
+	if (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd, sizeof(cmd),
+	    (u_char *) bp->b_data, bp->b_bcount, MUSTEK_RETRIES, 10000, bp,
+	    SCSI_NOSLEEP | SCSI_DATA_IN) != SUCCESSFULLY_QUEUED)
+		printf("%s: not queued\n", ss->sc_dev.dv_xname);
+	else {
+		ss->sio.scan_lines -= lines_to_read;
+		ss->sio.scan_window_size -= bp->b_bcount;
+	}
+
+	return (0);
+}
+
+/*
+ * check if the scanner is ready to take commands
+ *   wait timeout seconds and try only every second
+ *   if update, then update picture size info
+ *
+ *   returns EBUSY if scanner not ready
+ */
+int
+mustek_get_status(ss, timeout, update)
+	struct ss_softc *ss;
+	int timeout, update;
+{
+	struct mustek_get_status_cmd cmd;
+	struct mustek_get_status_data data;
+	struct scsi_link *sc_link = ss->sc_link;
+	int error, lines, bytes_per_line;
+
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = MUSTEK_GET_STATUS;
+	cmd.length = sizeof(data);
+
+	while (1) {
+		SC_DEBUG(sc_link, SDEV_DB1, ("mustek_get_status: stat_cmd\n"));
+		error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
+		    sizeof(cmd), (u_char *) &data, sizeof(data), MUSTEK_RETRIES,
+		    5000, NULL, SCSI_DATA_IN);
+		if (error)
+			return (error);
+		if ((data.ready_busy == MUSTEK_READY) ||
+		    (timeout-- <= 0))
+			break;
+		/* please wait a second */
+		tsleep((caddr_t)mustek_get_status, PRIBIO + 1, "mtkrdy", hz);
+	}
+
+	if (update) {
+		bytes_per_line =
+		    (data.bytes_per_line_1 << 8) |
+		    data.bytes_per_line_0;
+		lines =
+		    (data.lines_2 << 16) |
+		    (data.lines_1 << 8) |
+		    data.lines_0;
+		if (lines != ss->sio.scan_lines) {
+			printf("mustek: lines actual(%d) != computed(%d)\n",
+			    lines, ss->sio.scan_lines);
+			return (EIO);
+		}
+		if (bytes_per_line * lines != ss->sio.scan_window_size) {
+			printf("mustek: win-size actual(%d) != computed(%d)\n",
+			    bytes_per_line * lines, ss->sio.scan_window_size);
+		    return (EIO);
+		}
+
+		SC_DEBUG(sc_link, SDEV_DB1,
+		    ("mustek_get_size: bpl=%d, lines=%d\n",
+		    (ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8,
+		    ss->sio.scan_lines));
+		SC_DEBUG(sc_link, SDEV_DB1, ("window size = %d\n",
+		    ss->sio.scan_window_size));
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_get_status: end\n"));
+	if (data.ready_busy == MUSTEK_READY)
+		return (0);
+	else
+		return (EBUSY);
+}
+
+/*
+ * mustek_compute_sizes: compute window_size and lines for the picture
+ *   this function is called from different places in the code
+ */
+void
+mustek_compute_sizes(ss)
+	struct ss_softc *ss;
+{
+
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+		ss->sio.scan_bits_per_pixel = 1;
+		break;
+	case SIM_GRAYSCALE:
+	case SIM_RED:
+	case SIM_GREEN:
+	case SIM_BLUE:
+		ss->sio.scan_bits_per_pixel = 8;
+		break;
+	}
+
+	/*
+	 * horizontal number of bytes is always a multiple of 2,
+	 * in 8-bit mode at least
+	 */
+	ss->sio.scan_pixels_per_line =
+	    (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+	if (ss->sio.scan_bits_per_pixel == 1)
+		/* make it a multiple of 16, and thus of 2 bytes */
+		ss->sio.scan_pixels_per_line =
+		    (ss->sio.scan_pixels_per_line + 15) & 0xfffffff0;
+	else
+		ss->sio.scan_pixels_per_line =
+		    (ss->sio.scan_pixels_per_line + 1) & 0xfffffffe;
+
+	ss->sio.scan_lines =
+	    (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+	ss->sio.scan_window_size = ss->sio.scan_lines * 
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+}
diff --git a/sys/scsi/ss_mustek.h b/sys/scsi/ss_mustek.h
new file mode 100644
index 000000000000..c045675077bd
--- /dev/null
+++ b/sys/scsi/ss_mustek.h
@@ -0,0 +1,218 @@
+/*	$NetBSD: ss_mustek.h,v 1.1 1996/02/18 20:32:48 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Joachim Koenig-Baltes.  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 Joachim Koenig-Baltes.
+ * 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.
+ */
+
+#ifndef	_SS_MUSTEK_H_
+#define _SS_MUSTEK_H_ 1
+
+/*
+ * support for MUSTEK flatbed SCSI scanners MFS-06000CX and MFS-12000CX
+ * (600 and 1200 dpi horizontally resp), not conforming to the SCSI2 spec.
+ */
+
+/*
+ * Configuration section: describes the mode in which scanner is driven
+ * MUSTEK_INCH_SPEC: frame/window sizes are given in inches instead of
+ *     pixels, note: unit is 1/8th of an inch
+ * MUSTEK_WINDOWS: number of windows in a frame, up to 4 allowed,
+ *     not used yet, so set to 0
+ */
+#define MUSTEK_INCH_SPEC		/* use inches to specify sizes */
+#define MUSTEK_WINDOWS		0	/* no window support yet */
+
+/* mustek scsi commands */
+#define MUSTEK_SET_WINDOW	0x04	/* set image area and windows */
+#define MUSTEK_READ		0x08	/* read command */
+#define MUSTEK_GET_STATUS	0x0f	/* image status */
+#define MUSTEK_MODE_SELECT	0x15	/* set resolution, paper length, .. */
+#define MUSTEK_ADF		0x10	/* ADF and backtracking selection */
+#define MUSTEK_START_STOP	0x1b	/* start/stop scan */
+#define MUSTEK_LUT		0x55	/* look up table download */
+
+/* the size spec is at the same bit position in different commands */
+#define	MUSTEK_UNIT_INCHES		0x00
+#define MUSTEK_UNIT_PIXELS		0x08
+#ifdef MUSTEK_INCH_SPEC
+#define MUSTEK_UNIT_SPEC	MUSTEK_UNIT_INCHES
+#else
+#define MUSTEK_UNIT_SPEC	MUSTEK_UNIT_PIXELS
+#endif
+
+/*
+ * SCSI command formats
+ */
+
+struct mustek_set_window_cmd {
+	u_char	opcode;			/* 0x04 */
+	u_char	reserved[3];
+	u_char	length;			/* in bytes */
+	u_char	control;
+};
+
+struct mustek_set_window_data {
+#define MUSTEK_LINEART_BACKGROUND	0x00
+#define MUSTEK_HALFTONE_BACKGROUND	0x01
+	u_char	frame_header;		/* unit-defines also apply */
+	u_char	frame_tl_x_0;
+	u_char	frame_tl_x_1;
+	u_char	frame_tl_y_0;
+	u_char	frame_tl_y_1;
+	u_char	frame_br_x_0;
+	u_char	frame_br_x_1;
+	u_char	frame_br_y_0;
+	u_char	frame_br_y_1;
+#if MUSTEK_WINDOWS >= 1
+#define MUSTEK_WINDOW_MASK	0x80
+	u_char	window1_header;		/* unit-defines also apply */
+	u_char	window1_tl_x_0;
+	u_char	window1_tl_x_1;
+	u_char	window1_tl_y_0;
+	u_char	window1_tl_y_1;
+	u_char	window1_br_x_0;
+	u_char	window1_br_x_1;
+	u_char	window1_br_y_0;
+	u_char	window1_br_y_1;
+#endif
+#if MUSTEK_WINDOWS >= 2
+	u_char	window2_header;
+	u_char	window2_tl_x_0;
+	u_char	window2_tl_x_1;
+	u_char	window2_tl_y_0;
+	u_char	window2_tl_y_1;
+	u_char	window2_br_x_0;
+	u_char	window2_br_x_1;
+	u_char	window2_br_y_0;
+	u_char	window2_br_y_1;
+#endif
+#if MUSTEK_WINDOWS >= 3
+	u_char	window3_header;
+	u_char	window3_tl_x_0;
+	u_char	window3_tl_x_1;
+	u_char	window3_tl_y_0;
+	u_char	window3_tl_y_1;
+	u_char	window3_br_x_0;
+	u_char	window3_br_x_1;
+	u_char	window3_br_y_0;
+	u_char	window3_br_y_1;
+#endif
+#if MUSTEK_WINDOWS == 4
+	u_char	window4_header;
+	u_char	window4_tl_x_0;
+	u_char	window4_tl_x_1;
+	u_char	window4_tl_y_0;
+	u_char	window4_tl_y_1;
+	u_char	window4_br_x_0;
+	u_char	window4_br_x_1;
+	u_char	window4_br_y_0;
+	u_char	window4_br_y_1;
+#endif
+};
+
+struct mustek_read_cmd {
+	u_char	opcode;			/* 0x08 */
+	u_char	reserved;
+	u_char	length_2;		/* number of LINES to be read (MSB) */
+	u_char	length_1;		/* number of LINES to be read */
+	u_char	length_0;		/* number of LINES to be read (LSB) */
+	u_char	control;
+};
+
+struct mustek_get_status_cmd {
+	u_char	opcode;			/* 0x0f */
+	u_char	reserved[3];
+	u_char	length;			/* 0x06 */
+	u_char	control;
+};
+
+struct mustek_get_status_data {
+#define MUSTEK_READY 0
+#define MUSTEK_BUSY  -1	
+	u_char	ready_busy;		/* 0 = ready */
+	u_char	bytes_per_line_0;	/* LSB */
+	u_char	bytes_per_line_1;	/* MSB */
+	u_char	lines_0;		/* LSB */
+	u_char	lines_1;
+	u_char	lines_2;		/* MSB */
+};
+
+struct mustek_mode_select_cmd {
+	u_char	opcode;			/* 0x15 */
+	u_char	reserved[2];
+	u_char	length_1;		/* MSB */
+	u_char	length_0;		/* LSB */
+	u_char	control;
+};
+
+/*
+ * resolution settings:
+ *   MFS06000CX:
+ *   1% : 0x01 0x02 ... 0x64
+ *           3    6 ...  300 dpi
+ *   10%: 0x1e 0x3c 0x5a 0x14 0x32 0x50 0x0a 0x28 0x46 0x64
+ *         330  360  390  420  450  480  510  540  570  600 dpi
+ *   MFS12000CX:
+ *   1% : 0x01 0x02 ... 0x64
+ *           6   12 ...  600 dpi
+ *   10%: 0x1e 0x3c 0x5a 0x14 0x32 0x50 0x0a 0x28 0x46 0x64
+ *         660  720  780  840  900  960 1020 1080 1140 1200 dpi
+ */
+struct mustek_mode_select_data {
+#define MUSTEK_MODE_MASK		0x83
+#define MUSTEK_HT_PATTERN_BUILTIN	0x00
+#define MUSTEK_HT_PATTERN_DOWNLOADED	0x10
+	u_char	mode;
+	u_char	resolution;
+	u_char	brightness;
+	u_char	contrast;
+	u_char	grain;			/* 0 = 8x8, .....  5 = 2x2  */
+	u_char	velocity;		/* 0 = fast, ...., 4 = slow */
+	u_char	reserved[2];
+	u_char	paperlength_0;		/* LSB */
+	u_char	paperlength_1;		/* MSB */
+};
+
+struct mustek_start_scan_cmd {
+	u_char	opcode;			/* 0x1b */
+	u_char	reserved[3];
+#define MUSTEK_SCAN_STOP	0x00
+#define MUSTEK_SCAN_START	0x01
+#define MUSTEK_GRAY_FILTER	0x00
+#define MUSTEK_RED_FILTER	0x08
+#define MUSTEK_GREEN_FILTER	0x10
+#define MUSTEK_BLUE_FILTER	0x18
+#define MUSTEK_GRAY_MODE	0x40
+#define MUSTEK_BIT_MODE		0x00
+#define MUSTEK_RES_STEP_1	0x00
+#define MUSTEK_RES_STEP_10	0x80
+	u_char	mode;
+	u_char	control;
+};
+
+#endif /* _SS_MUSTEK_H_ */
diff --git a/sys/scsi/ss_scanjet.c b/sys/scsi/ss_scanjet.c
new file mode 100644
index 000000000000..4faebc78a75c
--- /dev/null
+++ b/sys/scsi/ss_scanjet.c
@@ -0,0 +1,410 @@
+/*	$NetBSD: ss_scanjet.c,v 1.1 1996/02/18 20:32:49 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  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 Kenneth Stailey.
+ * 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.
+ */
+
+/*
+ * special functions for the HP ScanJet IIc and IIcx
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/device.h>
+#include <sys/conf.h>		/* for cdevsw */
+#include <sys/scanio.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_scanner.h>
+#include <scsi/scsiconf.h>
+#include <scsi/ssvar.h>
+
+#define SCANJET_RETRIES 4
+
+int scanjet_get_params __P((struct ss_softc *));
+int scanjet_set_params __P((struct ss_softc *, struct scan_io *));
+int scanjet_trigger_scanner __P((struct ss_softc *));
+int scanjet_read __P((struct ss_softc *, struct buf *));
+
+/* only used internally */
+int scanjet_write __P((struct ss_softc *ss, char *buf, u_int size, int flags));
+int scanjet_set_window __P((struct ss_softc *ss));
+void scanjet_compute_sizes __P((struct ss_softc *));
+
+/*
+ * structure for the special handlers
+ */
+struct ss_special scanjet_special = {
+	scanjet_set_params,
+	scanjet_trigger_scanner,
+	scanjet_get_params,
+	NULL,			/* no special minphys */
+	scanjet_read,		/* scsi 6-byte read */
+	NULL,			/* no "rewind" code (yet?) */
+	NULL,			/* no adf support right now */
+	NULL			/* no adf support right now */
+};
+
+/*
+ * scanjet_attach: attach special functions to ss
+ */
+void
+scanjet_attach(ss, sa)
+	struct ss_softc *ss;
+	struct scsibus_attach_args *sa;
+{
+	struct scsi_link *sc_link = sa->sa_sc_link;
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("scanjet_attach: start\n"));
+	ss->sio.scan_scanner_type = 0;
+
+	/* first, check the model (which determines nothing yet) */
+
+	if (!bcmp(sa->sa_inqbuf->product, "C1750A", 6)) {
+		ss->sio.scan_scanner_type = HP_SCANJET_IIC;
+		printf(": HP ScanJet IIc\n");
+	}
+	if (!bcmp(sa->sa_inqbuf->product, "C2500A", 6)) {
+		ss->sio.scan_scanner_type = HP_SCANJET_IIC;
+		printf(": HP ScanJet IIcx\n");
+	}
+
+	SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: scanner_type = %d\n",
+	    ss->sio.scan_scanner_type));
+
+	/* now install special handlers */
+	ss->special = &scanjet_special;
+
+	/*
+	 * populate the scanio struct with legal values
+	 */
+	ss->sio.scan_width		= 1200;
+	ss->sio.scan_height		= 1200;
+	ss->sio.scan_x_resolution	= 100;
+	ss->sio.scan_y_resolution	= 100;
+	ss->sio.scan_x_origin		= 0;
+	ss->sio.scan_y_origin		= 0;
+	ss->sio.scan_brightness		= 100;
+	ss->sio.scan_contrast		= 100;
+	ss->sio.scan_quality		= 100;
+	ss->sio.scan_image_mode		= SIM_GRAYSCALE;
+
+	scanjet_compute_sizes(ss);
+}
+
+int
+scanjet_get_params(ss)
+	struct ss_softc *ss;
+{
+
+	return (0);
+}
+
+/*
+ * check the parameters if the scanjet is capable of fulfilling it
+ * but don't send the command to the scanner in case the user wants
+ * to change parameters by more than one call
+ */
+int
+scanjet_set_params(ss, sio)
+	struct ss_softc *ss;
+	struct scan_io *sio;
+{
+	int error;
+
+#if 0
+	/*
+	 * if the scanner is triggered, then rewind it
+	 */
+	if (ss->flags & SSF_TRIGGERED) {
+		error = scanjet_rewind_scanner(ss);
+		if (error)
+			return (error);
+	}
+#endif
+
+	/* size constraints... */
+	if (sio->scan_width == 0				 ||
+	    sio->scan_x_origin + sio->scan_width > 10200 || /* 8.5" */
+	    sio->scan_height == 0				 ||
+	    sio->scan_y_origin + sio->scan_height > 16800)  /* 14" */
+		return (EINVAL);
+
+	/* resolution (dpi)... */
+	if (sio->scan_x_resolution < 100 ||
+	    sio->scan_x_resolution > 400 ||
+	    sio->scan_y_resolution < 100 ||
+	    sio->scan_y_resolution > 400)
+		return (EINVAL);
+
+	switch (sio->scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+	case SIM_GRAYSCALE:
+	case SIM_COLOR:
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	/* change ss_softc to the new values, but save ro-variables */
+	sio->scan_scanner_type = ss->sio.scan_scanner_type;
+	bcopy(sio, &ss->sio, sizeof(struct scan_io));
+
+	scanjet_compute_sizes(ss);
+
+	return (0);
+}
+
+/*
+ * trigger the scanner to start a scan operation
+ * this includes sending the mode- and window-data,
+ * and starting the scanner
+ */
+int
+scanjet_trigger_scanner(ss)
+	struct ss_softc *ss;
+{
+	char escape_codes[20];
+	struct scsi_link *sc_link = ss->sc_link;
+	int error;
+
+	scanjet_compute_sizes(ss);
+
+	/* send parameters */
+	error = scanjet_set_window(ss);
+	if (error) {
+		uprintf("set window failed\n");
+		return (error);
+	}
+
+	/* send "trigger" operation */
+	strcpy(escape_codes, "\033*f0S");
+	error = scanjet_write(ss, escape_codes, strlen(escape_codes), 0);
+	if (error) {
+		uprintf("trigger failed\n");
+		return (error);
+	}
+	
+	return (0);
+}
+
+int
+scanjet_read(ss, bp)
+	struct ss_softc *ss;
+	struct buf *bp;
+{
+	struct scsi_rw_scanner cmd;
+	struct scsi_link *sc_link = ss->sc_link;
+
+	/*
+	 *  Fill out the scsi command
+	 */
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = READ;
+
+	/*
+	 * Handle "fixed-block-mode" tape drives by using the
+	 * block count instead of the length.
+	 */
+	lto3b(bp->b_bcount, cmd.len);
+
+	/*
+	 * go ask the adapter to do all this for us
+	 */
+	if (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd, sizeof(cmd),
+	    (u_char *) bp->b_data, bp->b_bcount, SCANJET_RETRIES, 100000, bp,
+	    SCSI_NOSLEEP | SCSI_DATA_IN) != SUCCESSFULLY_QUEUED)
+		printf("%s: not queued\n", ss->sc_dev.dv_xname);
+	else {
+		ss->sio.scan_window_size -= bp->b_bcount;
+		if (ss->sio.scan_window_size < 0)
+			ss->sio.scan_window_size = 0;
+	}
+
+	return (0);
+}
+
+
+/*
+ * Do a synchronous write.  Used to send control messages.
+ */
+int 
+scanjet_write(ss, buf, size, flags)
+	struct ss_softc *ss;
+	char *buf;
+	u_int size;
+	int flags;
+{
+	struct scsi_rw_scanner cmd;
+
+	/*
+	 * If it's a null transfer, return immediatly
+	 */
+	if (size == 0)
+		return (0);
+	bzero(&cmd, sizeof(cmd));
+	cmd.opcode = WRITE;
+	lto3b(size, cmd.len);
+	return (scsi_scsi_cmd(ss->sc_link, (struct scsi_generic *) &cmd,
+	    sizeof(cmd), (u_char *) buf, size, 0, 100000, NULL,
+	    flags | SCSI_DATA_OUT));
+}
+
+#ifdef SCANJETDEBUG
+static void show_es(char *es)
+{
+  char *p = es;
+  while (*p) {
+    if (*p == '\033')
+      printf("[Esc]");
+    else
+      printf("%c", *p);
+    ++p;
+  }
+  printf("\n");
+}
+#endif
+
+/* 
+ * simulate SCSI_SET_WINDOW for ScanJets
+ */
+int
+scanjet_set_window(ss)
+	struct ss_softc *ss;
+{
+	char escape_codes[128], *p;
+
+	p = escape_codes;
+
+	sprintf(p, "\033*f%dP", ss->sio.scan_width / 4);
+	p += strlen(p);
+	sprintf(p, "\033*f%dQ", ss->sio.scan_height / 4);
+	p += strlen(p);
+	sprintf(p, "\033*f%dX", ss->sio.scan_x_origin / 4);
+	p += strlen(p);
+	sprintf(p, "\033*f%dY", ss->sio.scan_y_origin / 4);
+	p += strlen(p);
+	sprintf(p, "\033*a%dR", ss->sio.scan_x_resolution);
+	p += strlen(p);
+	sprintf(p, "\033*a%dS", ss->sio.scan_y_resolution);
+	p += strlen(p);
+     
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+		/* use "line art" mode */
+		strcpy(p, "\033*a0T");
+		p += strlen(p);
+		/* make image data be "min-is-white ala PBM */
+		strcpy(p, "\033*a0I");
+		p += strlen(p);
+		break;
+	case SIM_DITHERED_MONOCHROME:
+		/* use dithered mode */
+		strcpy(p, "\033*a3T");
+		p += strlen(p);
+		/* make image data be "min-is-white ala PBM */
+		strcpy(p, "\033*a0I");
+		p += strlen(p);
+		break;
+	case SIM_GRAYSCALE:
+		/* use grayscale mode */
+		strcpy(p, "\033*a4T");
+		p += strlen(p);
+		/* make image data be "min-is-black ala PGM */
+		strcpy(p, "\033*a1I");
+		p += strlen(p);
+		break;
+	case SIM_COLOR:
+		/* use RGB color mode */
+		strcpy(p, "\033*a5T");
+		p += strlen(p);
+		/* make image data be "min-is-black ala PPM */
+		strcpy(p, "\033*a1I");
+		p += strlen(p);
+		/* use pass-through matrix (disable NTSC) */
+		strcpy(p, "\033*u2T");
+		p += strlen(p);
+	}
+
+	sprintf(p, "\033*a%dG", ss->sio.scan_bits_per_pixel);
+	p += strlen(p);
+	sprintf(p, "\033*a%dL", (int)(ss->sio.scan_brightness) - 128);
+	p += strlen(p);
+	sprintf(p, "\033*a%dK", (int)(ss->sio.scan_contrast) - 128);
+	p += strlen(p);
+
+	return (scanjet_write(ss, escape_codes, p - escape_codes, 0));
+}
+
+void
+scanjet_compute_sizes(ss)
+	struct ss_softc *ss;
+{
+
+	/*
+	 * Deal with the fact that the HP ScanJet IIc uses 1/300" not 1/1200"
+	 * as its base unit of measurement.  PINT uses 1/1200" (yes I know
+	 * ScanJet II's use decipoints as well but 1200 % 720 != 0)
+	 */
+	ss->sio.scan_width = (ss->sio.scan_width + 3) & 0xfffffffc;
+	ss->sio.scan_height = (ss->sio.scan_height + 3) & 0xfffffffc;
+
+	switch (ss->sio.scan_image_mode) {
+	case SIM_BINARY_MONOCHROME:
+	case SIM_DITHERED_MONOCHROME:
+		ss->sio.scan_bits_per_pixel = 1;
+		break;
+	case SIM_GRAYSCALE:
+		ss->sio.scan_bits_per_pixel = 8;
+		break;
+	case SIM_COLOR:
+		ss->sio.scan_bits_per_pixel = 24;
+		break;
+	}
+
+	ss->sio.scan_pixels_per_line =
+	    (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+	if (ss->sio.scan_bits_per_pixel == 1)
+		/* pad to byte boundary: */
+		ss->sio.scan_pixels_per_line =
+		    (ss->sio.scan_pixels_per_line + 7) & 0xfffffff8;
+
+	ss->sio.scan_lines =
+	    (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+	ss->sio.scan_window_size = ss->sio.scan_lines *
+	    ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+}
diff --git a/sys/scsi/ssvar.h b/sys/scsi/ssvar.h
new file mode 100644
index 000000000000..3aea359392df
--- /dev/null
+++ b/sys/scsi/ssvar.h
@@ -0,0 +1,79 @@
+/*	$NetBSD: ssvar.h,v 1.1 1996/02/18 20:32:50 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  All rights reserved.
+ *   modified for configurable scanner support by Joachim Koenig
+ *
+ * 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 Kenneth Stailey.
+ * 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.
+ */
+
+/*
+ * SCSI scanner interface description
+ */
+
+/*
+ * Special handlers for impractically different scanner types.
+ * Register NULL for a function if you want to try the real SCSI code
+ * (with quirks table)
+ */
+struct ss_special {
+	int	(*set_params)();
+	int	(*trigger_scanner)();
+	int	(*get_params)();
+	void	(*minphys)(); /* some scanners only send line-multiples */
+	int	(*read)();
+	int	(*rewind_scanner)();
+	int	(*load_adf)();
+	int	(*unload_adf)();
+};
+
+/*
+ * ss_softc has to be declared here, because the device dependant
+ * modules include it
+ */
+struct ss_softc {
+	struct device sc_dev;
+
+	int flags;
+#define SSF_TRIGGERED	0x01	/* read operation has been primed */
+#define	SSF_LOADED	0x02	/* parameters loaded */
+	struct scsi_link *sc_link;	/* contains our targ, lun, etc. */
+	struct scan_io sio;
+	struct buf buf_queue;		/* the queue of pending IO operations */
+	u_int quirks;			/* scanner is only mildly twisted */
+#define SS_Q_GET_BUFFER_SIZE	0x0001	/* poll for available data in ssread() */
+/* truncate to byte boundry is assumed by default unless one of these is set */
+#define SS_Q_PAD_TO_BYTE	0x0002	/* pad monochrome data to byte boundary */
+#define SS_Q_PAD_TO_WORD	0x0004	/* pad monochrome data to word boundary */
+#define SS_Q_THRESHOLD_FOLLOWS_BRIGHTNESS 0x0008
+	struct ss_special *special;	/* special handlers for spec. devices */
+};
+
+/*
+ * define the special attach routines if configured
+ */
+void mustek_attach __P((struct ss_softc *, struct scsibus_attach_args *));
+void scanjet_attach __P((struct ss_softc *, struct scsibus_attach_args *));
diff --git a/sys/sys/scanio.h b/sys/sys/scanio.h
new file mode 100644
index 000000000000..2d08f6f88e63
--- /dev/null
+++ b/sys/sys/scanio.h
@@ -0,0 +1,130 @@
+/*	$NetBSD: scanio.h,v 1.1 1996/02/18 20:33:18 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Kenneth Stailey.  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 Kenneth Stailey.
+ * 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.
+ */
+
+/*
+ * Definitions for PINT scanner drivers
+ */
+
+#ifndef _SYS_SCANIO_H
+#define _SYS_SCANIO_H
+
+/*
+ * XXX scancap make this sort of obsolete:
+ *
+ * Some comments about the values in the scan_io struct:
+ *
+ * All user-changeable values have minimum and maximum values for
+ * specific scanner types and are rejected by the special drivers if
+ * they are not in range. For values in the range, the driver selects
+ * the next physically possible setting for the particular scanner.
+ * So it is good practice to issue a SCIOCGET after a SCIOCSET to see
+ * what the driver has chosen.
+ *
+ * Brightness and contrast default to 100 (%) but scanners may support
+ * higher and/or lower values, though the maximum value is 255.
+ * velocity is the scan speed and defaults to 100 (%), only slower
+ * values may be possible.
+ */
+
+struct scan_io {
+	u_long	scan_width;		 /* width in 1/1200ths of an inch */
+	u_long	scan_height;		 /* height in 1/1200ths of an inch */
+#ifdef SCAN_BC
+# define scan_window_width scan_width
+# define scan_window_length scan_height
+#endif
+	u_short	scan_x_resolution;	/* horizontal resolution in dots-per-inch */
+	u_short	scan_y_resolution;	/* vertical resolution in dots-per-inch */
+	u_long	scan_x_origin;		/* horizontal coordinate of upper left corner */
+	u_long	scan_y_origin;		/* vertical coordinate of upper left corner */
+	u_char	scan_image_mode;	/* type of image data sent by scanner */
+	u_char	scan_brightness;	/* brightness control for those to can do it */
+	u_char	scan_contrast;		/* contrast control for those to can do it */
+	u_char	scan_quality;		/* speed of scan for instance */
+#ifdef SCAN_BC
+# define scan_velocity scan_quality
+#endif
+	u_long	scan_window_size;	/* size of window in bytes (ro) */
+	u_long	scan_lines;		/* number of pixels per column (ro) */
+	u_long	scan_pixels_per_line;	/* number of pixels per line (ro) */
+	u_short	scan_bits_per_pixel;	/* number of bits per pixel (ro) */
+	u_char	scan_scanner_type;	/* type of scanner (ro) */
+};
+
+/*
+ * defines for different commands
+ */
+
+#define SCIOCGET	_IOR('S', 1, struct scan_io) /* retrieve parameters */
+#define SCIOCSET	_IOW('S', 2, struct scan_io) /* set parameters */
+#define SCIOCRESTART	_IO('S', 3) /* restart scan */
+#define SCIOC_USE_ADF	_IO('S', 4) /* use ADF as paper source for next scan */
+				    /* even after close() */
+#ifdef SCAN_BC
+# define SCAN_GET	SCIOCGET
+# define SCAN_SET	SCIOCSET
+# define SCAN_REWIND	SCIOCRESTART
+# define SCAN_USE_ADF	SCIOC_USE_ADF
+#endif
+
+/*
+ * defines for scan_image_mode field
+ */
+
+#define SIM_BINARY_MONOCHROME	0
+#define SIM_DITHERED_MONOCHROME	1
+#define SIM_GRAYSCALE		2
+#define SIM_COLOR		5
+#define SIM_RED			103
+#define SIM_GREEN		104
+#define SIM_BLUE		105
+
+/*
+ * defines for different types of scanners & product names as comments
+ */
+
+#define RICOH_IS410	1	/* Ricoh IS-410 */
+#define FUJITSU_M3096G	2	/* Fujitsu M3096G */
+#ifdef SCAN_BC
+# define FUJITSU	2	/* Fujitsu M3096G (deprecated) */
+#endif
+#define HP_SCANJET_IIC	3	/* HP ScanJet IIc */
+#define RICOH_FS1	4	/* Ricoh FS1 */
+#define SHARP_JX600	5	/* Sharp JX600 */
+#define RICOH_IS50	6	/* Ricoh IS-50 */
+#define IBM_2456	7	/* IBM 2456 */
+#define UMAX_UC630	8	/* UMAX UC630 */
+#define UMAX_UG630	9	/* UMAX UG630 */
+#define MUSTEK_06000CX	10	/* Mustek MFS06000CX */
+#define MUSTEK_12000CX	11	/* Mustek MFS12000CX */
+#define EPSON_ES300C	12	/* epson es300c */
+
+#endif /* _SYS_SCANIO_H */