Obsoleted by CAM.

1 files changed, 0 insertions, 750 deletions

diff --git a/sys/scsi/ch.c b/sys/scsi/ch.c
deleted file mode 100644
index 9b970fb..0000000
--- a/sys/scsi/ch.c
+++ /dev/null
@@ -1,750 +0,0 @@
-/*
- * Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
- * All rights reserved.
- *
- * Partially based on an autochanger driver written by Stefan Grefen
- * and on an autochanger driver written by the Systems Programming Group
- * at the University of Utah Computer Science Department.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgements:
- *	This product includes software developed by Jason R. Thorpe
- *	for And Communications, http://www.and.com/
- * 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.
- *
- *      $Id: ch.c,v 1.47 1998/06/17 14:13:13 bde Exp $
- */
-
-#include "opt_devfs.h"
-#include "opt_bounce.h"
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/chio.h>
-#include <sys/conf.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#ifdef DEVFS
-#include <sys/devfsext.h>
-#endif /*DEVFS*/
-#ifdef BOUNCE_BUFFERS
-#include <sys/buf.h>
-#endif
-
-#include <scsi/scsi_changer.h>
-#include <scsi/scsiconf.h>
-#include <scsi/scsi_driver.h>
-
-#include "ioconf.h"
-
-#define CHRETRIES	2
-#define CHUNIT(x)	(minor((x)))
-#define CHSETUNIT(x, y)	makedev(major(x), y)
-
-struct ch_softc {
-	/*
-	 * Human-readable external name.  FreeBSD doesn't have a
-	 * generic hook for this, so we make it look NetBSD-like.  See
-	 * comment in chattach().
-	 */
-	struct {
-		char	dv_xname[16];
-	} sc_dev;
-
-	/*
-	 * Pointer back to the scsi_link.  See comment in chattach().
-	 */
-	struct scsi_link *sc_link;
-
-	int		sc_picker;	/* current picker */
-
-	/*
-	 * The following information is obtained from the
-	 * element address assignment page.
-	 */
-	int		sc_firsts[4];	/* firsts, indexed by CHET_* */
-	int		sc_counts[4];	/* counts, indexed by CHET_* */
-
-	/*
-	 * The following mask defines the legal combinations
-	 * of elements for the MOVE MEDIUM command.
-	 */
-	u_int8_t	sc_movemask[4];
-
-	/*
-	 * As above, but for EXCHANGE MEDIUM.
-	 */
-	u_int8_t	sc_exchangemask[4];
-
-	int		flags;		/* misc. info */
-#ifdef	DEVFS
-	void		*c_devfs_token;
-	void		*ctl_devfs_token;
-#endif
-};
-
-/* sc_flags */
-#define CHF_ROTATE	0x01		/* picker can rotate */
-
-static	d_open_t	chopen;
-static	d_close_t	chclose;
-static	d_ioctl_t	chioctl;
-
-#define CDEV_MAJOR 17
-static struct cdevsw ch_cdevsw = 
-	{ chopen,	chclose,	noread,		nowrite,	/*17*/
-	  chioctl,	nostop,		nullreset,	nodevtotty,/* ch */
-	  seltrue,	nommap,		nostrat,	"ch",	NULL,	-1 };
-
-/*
- * SCSI glue.
- */
-
-/*
- * Under FreeBSD, this macro sets up a bunch of trampoline
- * functions that indirect through the SCSI subsystem.
- */
-SCSI_DEVICE_ENTRIES(ch)
-
-static	int chunit __P((dev_t));
-static	dev_t chsetunit __P((dev_t, int));
-
-/* So, like, why not "int"? */
-static	errval	ch_devopen __P((dev_t, int, int, struct proc *,
-				struct scsi_link *));
-static	errval	ch_devioctl __P((dev_t, u_long, caddr_t, int, struct proc *,
-				 struct scsi_link *));
-static	errval	ch_devclose __P((dev_t, int, int, struct proc *,
-				 struct scsi_link *));
-
-static struct scsi_device ch_switch = {
-	NULL,				/* (*err_handler) */
-	NULL,				/* (*start) */
-	NULL,				/* (*async) */
-	NULL,				/* (*done) */
-	"ch",				/* name */
-	0,				/* flags */
-	{ 0, 0 },			/* spare[2] */
-	0,				/* link_flags */
-	chattach,			/* (*attach) */
-	"Medium-Changer",		/* desc */
-	chopen,				/* (*open) */
-	sizeof(struct ch_softc),	/* sizeof_scsi_data */
-	T_CHANGER,			/* type */
-	chunit,				/* (*getunit) */
-	chsetunit,			/* (*setunit) */
-	ch_devopen,			/* (*dev_open) */
-	ch_devioctl,			/* (*dev_ioctl) */
-	ch_devclose,			/* (*dev_close) */
-};
-
-static	int	ch_move __P((struct ch_softc *, struct changer_move *));
-static	int	ch_exchange __P((struct ch_softc *, struct changer_exchange *));
-static	int	ch_position __P((struct ch_softc *, struct changer_position *));
-static	int	ch_usergetelemstatus __P((struct ch_softc *, int, u_int8_t *));
-static	int	ch_getelemstatus __P((struct ch_softc *, int, int, caddr_t, size_t));
-static	int	ch_get_params __P((struct ch_softc *, int));
-
-static	errval
-chattach(link)
-	struct scsi_link *link;
-{
-	struct ch_softc *sc = (struct ch_softc *)(link->sd);
-	u_int32_t unit = link->dev_unit;
-
-	/*
-	 * FreeBSD doesn't have any common way of carrying
-	 * around a device's external name (i.e. <name><unit>),
-	 * so emulate the structure used by NetBSD to keep the
-	 * diffs lower.
-	 */
-	bzero(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname));
-	sprintf(sc->sc_dev.dv_xname, "%s%d", ch_switch.name, unit);
-
-	/*
-	 * FreeBSD gets "softc" info for a device from the
-	 * scsi_link argument passed to indirect entry point functions.
-	 * NetBSD get scsi_link info from softcs that are
-	 * obtained from indexes passed to direct entry point functions.
-	 * We emulate the NetBSD behavior here to keep the diffs
-	 * lower.
-	 */
-	sc->sc_link = link;
-
-	/*
-	 * Get information about the device.  Note we can't use
-	 * interrupts yet.
-	 */
-	if (ch_get_params(sc, SCSI_NOSLEEP|SCSI_NOMASK))
-		printf("offline");
-	else {
-		printf("%d slot%s, %d drive%s, %d picker%s",
-		    sc->sc_counts[CHET_ST], (sc->sc_counts[CHET_ST] > 1) ?
-		    "s" : "",
-		    sc->sc_counts[CHET_DT], (sc->sc_counts[CHET_DT] > 1) ?
-		    "s" : "",
-		    sc->sc_counts[CHET_MT], (sc->sc_counts[CHET_MT] > 1) ?
-		    "s" : "");
-		if (sc->sc_counts[CHET_IE])
-			printf(", %d portal%s", sc->sc_counts[CHET_IE],
-			    (sc->sc_counts[CHET_IE] > 1) ? "s" : "");
-		if (bootverbose) {
-			printf("\n");	/* This will probably look ugly ... bummer. */
-			printf("%s: move mask: 0x%x 0x%x 0x%x 0x%x\n",
-			       sc->sc_dev.dv_xname,
-			       sc->sc_movemask[CHET_MT], sc->sc_movemask[CHET_ST],
-			       sc->sc_movemask[CHET_IE], sc->sc_movemask[CHET_DT]);
-			printf("%s: exchange mask: 0x%x 0x%x 0x%x 0x%x\n",
-			       sc->sc_dev.dv_xname,
-			       sc->sc_exchangemask[CHET_MT], sc->sc_exchangemask[CHET_ST],
-			       sc->sc_exchangemask[CHET_IE], sc->sc_exchangemask[CHET_DT]);
-		}
-	}
-
-	/* Default the current picker. */
-	sc->sc_picker = sc->sc_firsts[CHET_MT];
-
-#ifdef DEVFS
-	sc->c_devfs_token = devfs_add_devswf(&ch_cdevsw, unit << 4, DV_CHR,
-					     UID_ROOT, GID_OPERATOR, 0600,
-					     "ch%d", unit);
-	sc->ctl_devfs_token = devfs_add_devswf(&ch_cdevsw,
-					       (unit << 4) | SCSI_CONTROL_MASK,
-					       DV_CHR,
-					       UID_ROOT, GID_OPERATOR, 0600,
-					       "ch%d.ctl", unit);
-#endif
-	return (0);
-}
-
-static	errval
-ch_devopen(dev, flags, fmt, p, link)
-	dev_t dev;
-	int flags, fmt;
-	struct proc *p;
-	struct scsi_link *link;
-{
-	struct ch_softc *sc = (struct ch_softc *)(link->sd);
-	errval error = 0;
-	int unit;
-
-	unit = CHUNIT(dev);
-
-	/*
-	 * Only allow one open at a time.
-	 */
-	if (link->flags & SDEV_OPEN)
-		return (EBUSY);
-
-	link->flags |= SDEV_OPEN;
-
-	/*
-	 * Absorb any unit attention errors.  Ignore "not ready"
-	 * since this might occur if e.g. a tape isn't actually
-	 * loaded in the drive.
-	 */
-	(void)scsi_test_unit_ready(link, SCSI_SILENT);
-
-	/*
-	 * Make sure our parameters are up to date.
-	 */
-	if (error = ch_get_params(sc, 0))
-		goto bad;
-
-	return (0);
-
- bad:
-	link->flags &= ~SDEV_OPEN;
-	return (error);
-}
-
-static	errval
-ch_devclose(dev, flags, fmt, p, link)
-	dev_t dev;
-	int flags, fmt;
-	struct proc *p;
-	struct scsi_link *link;
-{
-
-	link->flags &= ~SDEV_OPEN;
-	return (0);
-}
-
-static	errval
-ch_devioctl(dev, cmd, data, flags, p, link)
-	dev_t dev;
-	u_long cmd;
-	caddr_t data;
-	int flags;
-	struct proc *p;
-	struct scsi_link *link;
-{
-	struct ch_softc *sc = (struct ch_softc *)(link->sd);
-	caddr_t elemdata;
-	int error = 0;
-
-	switch (cmd) {
-	case CHIOMOVE:
-		error = ch_move(sc, (struct changer_move *)data);
-		break;
-
-	case CHIOEXCHANGE:
-		error = ch_exchange(sc, (struct changer_exchange *)data);
-		break;
-
-	case CHIOPOSITION:
-		error = ch_position(sc, (struct changer_position *)data);
-		break;
-
-	case CHIOGPICKER:
-		*(int *)data = sc->sc_picker - sc->sc_firsts[CHET_MT];
-		break;
-
-	case CHIOSPICKER:	{
-		int new_picker = *(int *)data;
-
-		if (new_picker > (sc->sc_counts[CHET_MT] - 1))
-			return (EINVAL);
-		sc->sc_picker = sc->sc_firsts[CHET_MT] + new_picker;
-		break;		}
-
-	case CHIOGPARAMS:	{
-		struct changer_params *cp = (struct changer_params *)data;
-
-		cp->cp_curpicker = sc->sc_picker - sc->sc_firsts[CHET_MT];
-		cp->cp_npickers = sc->sc_counts[CHET_MT];
-		cp->cp_nslots = sc->sc_counts[CHET_ST];
-		cp->cp_nportals = sc->sc_counts[CHET_IE];
-		cp->cp_ndrives = sc->sc_counts[CHET_DT];
-		break;		}
-
-	case CHIOGSTATUS:	{
-		struct changer_element_status *ces =
-		    (struct changer_element_status *)data;
-
-		error = ch_usergetelemstatus(sc, ces->ces_type, ces->ces_data);
-		break;		}
-
-	/* Implement prevent/allow? */
-
-	default:
-		error = scsi_do_ioctl(dev, cmd, data, flags, p, link);
-		break;
-	}
-
-	return (error);
-}
-
-static	int
-ch_move(sc, cm)
-	struct ch_softc *sc;
-	struct changer_move *cm;
-{
-	struct scsi_move_medium cmd;
-	u_int16_t fromelem, toelem;
-
-	/*
-	 * Check arguments.
-	 */
-	if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT))
-		return (EINVAL);
-	if ((cm->cm_fromunit > (sc->sc_counts[cm->cm_fromtype] - 1)) ||
-	    (cm->cm_tounit > (sc->sc_counts[cm->cm_totype] - 1)))
-		return (ENODEV);
-
-	/*
-	 * Check the request against the changer's capabilities.
-	 */
-	if ((sc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0)
-		return (EINVAL);
-
-	/*
-	 * Calculate the source and destination elements.
-	 */
-	fromelem = sc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit;
-	toelem = sc->sc_firsts[cm->cm_totype] + cm->cm_tounit;
-
-	/*
-	 * Build the SCSI command.
-	 */
-	bzero(&cmd, sizeof(cmd));
-	cmd.opcode = MOVE_MEDIUM;
-	scsi_uto2b(sc->sc_picker, cmd.tea);
-	scsi_uto2b(fromelem, cmd.src);
-	scsi_uto2b(toelem, cmd.dst);
-	if (cm->cm_flags & CM_INVERT)
-		cmd.flags |= MOVE_MEDIUM_INVERT;
-
-	/*
-	 * Send command to changer.
-	 */
-	return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
-	    sizeof(cmd), NULL, 0, CHRETRIES, 100000, NULL, 0));
-}
-
-static	int
-ch_exchange(sc, ce)
-	struct ch_softc *sc;
-	struct changer_exchange *ce;
-{
-	struct scsi_exchange_medium cmd;
-	u_int16_t src, dst1, dst2;
-
-	/*
-	 * Check arguments.
-	 */
-	if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) ||
-	    (ce->ce_sdsttype > CHET_DT))
-		return (EINVAL);
-	if ((ce->ce_srcunit > (sc->sc_counts[ce->ce_srctype] - 1)) ||
-	    (ce->ce_fdstunit > (sc->sc_counts[ce->ce_fdsttype] - 1)) ||
-	    (ce->ce_sdstunit > (sc->sc_counts[ce->ce_sdsttype] - 1)))
-		return (ENODEV);
-
-	/*
-	 * Check the request against the changer's capabilities.
-	 */
-	if (((sc->sc_exchangemask[ce->ce_srctype] &
-	     (1 << ce->ce_fdsttype)) == 0) ||
-	    ((sc->sc_exchangemask[ce->ce_fdsttype] &
-	     (1 << ce->ce_sdsttype)) == 0))
-		return (EINVAL);
-
-	/*
-	 * Calculate the source and destination elements.
-	 */
-	src = sc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit;
-	dst1 = sc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit;
-	dst2 = sc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit;
-
-	/*
-	 * Build the SCSI command.
-	 */
-	bzero(&cmd, sizeof(cmd));
-	cmd.opcode = EXCHANGE_MEDIUM;
-	scsi_uto2b(sc->sc_picker, cmd.tea);
-	scsi_uto2b(src, cmd.src);
-	scsi_uto2b(dst1, cmd.fdst);
-	scsi_uto2b(dst2, cmd.sdst);
-	if (ce->ce_flags & CE_INVERT1)
-		cmd.flags |= EXCHANGE_MEDIUM_INV1;
-	if (ce->ce_flags & CE_INVERT2)
-		cmd.flags |= EXCHANGE_MEDIUM_INV2;
-
-	/*
-	 * Send command to changer.
-	 */
-	return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
-	    sizeof(cmd), NULL, 0, CHRETRIES, 100000, NULL, 0));
-}
-
-static	int
-ch_position(sc, cp)
-	struct ch_softc *sc;
-	struct changer_position *cp;
-{
-	struct scsi_position_to_element cmd;
-	u_int16_t dst;
-
-	/*
-	 * Check arguments.
-	 */
-	if (cp->cp_type > CHET_DT)
-		return (EINVAL);
-	if (cp->cp_unit > (sc->sc_counts[cp->cp_type] - 1))
-		return (ENODEV);
-
-	/*
-	 * Calculate the destination element.
-	 */
-	dst = sc->sc_firsts[cp->cp_type] + cp->cp_unit;
-
-	/*
-	 * Build the SCSI command.
-	 */
-	bzero(&cmd, sizeof(cmd));
-	cmd.opcode = POSITION_TO_ELEMENT;
-	scsi_uto2b(sc->sc_picker, cmd.tea);
-	scsi_uto2b(dst, cmd.dst);
-	if (cp->cp_flags & CP_INVERT)
-		cmd.flags |= POSITION_TO_ELEMENT_INVERT;
-
-	/*
-	 * Send command to changer.
-	 */
-	return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
-	    sizeof(cmd), NULL, 0, CHRETRIES, 100000, NULL, 0));
-}
-
-/*
- * Perform a READ ELEMENT STATUS on behalf of the user, and return to
- * the user only the data the user is interested in (i.e. an array of
- * flags bytes).
- */
-static	int
-ch_usergetelemstatus(sc, chet, uptr)
-	struct ch_softc *sc;
-	int chet;
-	u_int8_t *uptr;
-{
-	struct read_element_status_header *st_hdr;
-	struct read_element_status_page_header *pg_hdr;
-	struct read_element_status_descriptor *desc;
-	caddr_t data = NULL;
-#ifdef BOUNCE_BUFFERS
-	int datasize = 0;
-#endif
-	size_t size, desclen;
-	int avail, i, error = 0;
-	u_int8_t *user_data = NULL;
-
-	/*
-	 * If there are no elements of the requested type in the changer,
-	 * the request is invalid.
-	 */
-	if (sc->sc_counts[chet] == 0)
-		return (EINVAL);
-
-	/*
-	 * Request one descriptor for the given element type.  This
-	 * is used to determine the size of the descriptor so that
-	 * we can allocate enough storage for all of them.  We assume
-	 * that the first one can fit into 1k.
-	 */
-#ifdef BOUNCE_BUFFERS
-	data = (caddr_t)vm_bounce_kva_alloc(btoc(1024));
-	if (!data)
-		return (ENOMEM);
-	datasize = 1024;
-#else
-	data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK);
-#endif
-	if (error = ch_getelemstatus(sc, sc->sc_firsts[chet], 1, data, 1024))
-		goto done;
-
-	st_hdr = (struct read_element_status_header *)data;
-	pg_hdr = (struct read_element_status_page_header *)((char *)st_hdr +
-	    sizeof(struct read_element_status_header));
-	desclen = scsi_2btou(pg_hdr->edl);
-
-	size = sizeof(struct read_element_status_header) +
-	    sizeof(struct read_element_status_page_header) +
-	    (desclen * sc->sc_counts[chet]);
-
-	/*
-	 * Reallocate storage for descriptors and get them from the
-	 * device.
-	 */
-#ifdef BOUNCE_BUFFERS
-	vm_bounce_kva_alloc_free((vm_offset_t)data, btoc(datasize));
-	data = (caddr_t)vm_bounce_kva_alloc(btoc(size));
-	if (!data) {
-		error = ENOMEM;
-		goto done;
-	}
-	datasize = size;
-#else
-	free(data, M_DEVBUF);
-	data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK);
-#endif
-	if (error = ch_getelemstatus(sc, sc->sc_firsts[chet],
-	    sc->sc_counts[chet], data, size))
-		goto done;
-
-	/*
-	 * Fill in the user status array.
-	 */
-	st_hdr = (struct read_element_status_header *)data;
-	avail = scsi_2btou(st_hdr->count);
-	if (avail != sc->sc_counts[chet])
-		printf("%s: warning, READ ELEMENT STATUS avail != count\n",
-		    sc->sc_dev.dv_xname);
-
-	user_data = (u_int8_t *)malloc(avail, M_DEVBUF, M_WAITOK);
-
-	desc = (struct read_element_status_descriptor *)((char *)data +
-	    sizeof(struct read_element_status_header) +
-	    sizeof(struct read_element_status_page_header));
-	for (i = 0; i < avail; ++i) {
-		user_data[i] = desc->flags1;
-		desc = (struct read_element_status_descriptor *)
-		    ((char *)desc + desclen);
-	}
-
-	/* Copy flags array out to userspace. */
-	error = copyout(user_data, uptr, avail);
-
- done:
-#ifdef BOUNCE_BUFFERS
-	if (data != NULL)
-		vm_bounce_kva_alloc_free((vm_offset_t)data, btoc(datasize));
-#else
-	if (data != NULL)
-		free(data, M_DEVBUF);
-#endif
-	if (user_data != NULL)
-		free(user_data, M_DEVBUF);
-	return (error);
-}
-
-static	int
-ch_getelemstatus(sc, first, count, data, datalen)
-	struct ch_softc *sc;
-	int first, count;
-	caddr_t data;
-	size_t datalen;
-{
-	struct scsi_read_element_status cmd;
-
-	/*
-	 * Build SCSI command.
-	 */
-	bzero(&cmd, sizeof(cmd));
-	cmd.opcode = READ_ELEMENT_STATUS;
-	scsi_uto2b(first, cmd.sea);
-	scsi_uto2b(count, cmd.count);
-	scsi_uto3b(datalen, cmd.len);
-
-	/*
-	 * Send command to changer.
-	 */
-	return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
-	    sizeof(cmd), (u_char *)data, datalen, CHRETRIES, 100000, NULL, SCSI_DATA_IN));
-}
-
-
-/*
- * Ask the device about itself and fill in the parameters in our
- * softc.
- */
-static	int
-ch_get_params(sc, scsiflags)
-	struct ch_softc *sc;
-	int scsiflags;
-{
-	struct scsi_mode_sense cmd;
-	struct scsi_mode_sense_data {
-		struct scsi_mode_header header;
-		union {
-			struct page_element_address_assignment ea;
-			struct page_transport_geometry_parameters tg;
-			struct page_device_capabilities cap;
-		} pages;
-	} sense_data;
-	int error, from;
-	u_int8_t *moves, *exchanges;
-
-	/*
-	 * Grab info from the element address assignment page.
-	 */
-	bzero(&cmd, sizeof(cmd));
-	bzero(&sense_data, sizeof(sense_data));
-	cmd.op_code = MODE_SENSE;
-	cmd.byte2 |= 0x08;	/* disable block descriptors */
-	cmd.page = 0x1d;
-	cmd.length = (sizeof(sense_data) & 0xff);
-	error = scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
-	    sizeof(cmd), (u_char *)&sense_data, sizeof(sense_data), CHRETRIES,
-	    6000, NULL, scsiflags | SCSI_DATA_IN);
-	if (error) {
-		printf("%s: could not sense element address page\n",
-		    sc->sc_dev.dv_xname);
-		return (error);
-	}
-
-	sc->sc_firsts[CHET_MT] = scsi_2btou(sense_data.pages.ea.mtea);
-	sc->sc_counts[CHET_MT] = scsi_2btou(sense_data.pages.ea.nmte);
-	sc->sc_firsts[CHET_ST] = scsi_2btou(sense_data.pages.ea.fsea);
-	sc->sc_counts[CHET_ST] = scsi_2btou(sense_data.pages.ea.nse);
-	sc->sc_firsts[CHET_IE] = scsi_2btou(sense_data.pages.ea.fieea);
-	sc->sc_counts[CHET_IE] = scsi_2btou(sense_data.pages.ea.niee);
-	sc->sc_firsts[CHET_DT] = scsi_2btou(sense_data.pages.ea.fdtea);
-	sc->sc_counts[CHET_DT] = scsi_2btou(sense_data.pages.ea.ndte);
-
-	/* XXX ask for page trasport geom */
-
-	/*
-	 * Grab info from the capabilities page.
-	 */
-	bzero(&cmd, sizeof(cmd));
-	bzero(&sense_data, sizeof(sense_data));
-	cmd.op_code = MODE_SENSE;
-	cmd.byte2 |= 0x08;	/* disable block descriptors */
-	cmd.page = 0x1f;
-	cmd.length = (sizeof(sense_data) & 0xff);
-	error = scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
-	    sizeof(cmd), (u_char *)&sense_data, sizeof(sense_data), CHRETRIES,
-	    6000, NULL, scsiflags | SCSI_DATA_IN);
-	if (error) {
-		printf("%s: could not sense capabilities page\n",
-		    sc->sc_dev.dv_xname);
-		return (error);
-	}
-
-	bzero(sc->sc_movemask, sizeof(sc->sc_movemask));
-	bzero(sc->sc_exchangemask, sizeof(sc->sc_exchangemask));
-	moves = &sense_data.pages.cap.move_from_mt;
-	exchanges = &sense_data.pages.cap.exchange_with_mt;
-	for (from = CHET_MT; from <= CHET_DT; ++from) {
-		sc->sc_movemask[from] = moves[from];
-		sc->sc_exchangemask[from] = exchanges[from];
-	}
-
-	sc->sc_link->flags |= SDEV_MEDIA_LOADED;
-	return (0);
-}
-
-static int
-chunit(dev)
-	dev_t dev;
-{
-
-	return (CHUNIT(dev));
-}
-
-static dev_t
-chsetunit(dev, unit)
-	dev_t dev;
-	int unit;
-{
-
-	return (CHSETUNIT(dev, unit));
-}
-
-
-static ch_devsw_installed = 0;
-
-static void
-ch_drvinit(void *unused)
-{
-	dev_t dev;
-
-	if( ! ch_devsw_installed ) {
-		dev = makedev(CDEV_MAJOR, 0);
-		cdevsw_add(&dev,&ch_cdevsw, NULL);
-		ch_devsw_installed = 1;
-    	}
-}
-
-SYSINIT(chdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,ch_drvinit,NULL)