Eliminate ramdisk.c and ramdisk.h now that they're unused.

2 files changed, 0 insertions, 724 deletions

diff --git a/sys/dev/ramdisk.c b/sys/dev/ramdisk.c
deleted file mode 100644
index fd244b7a35f..00000000000
--- a/sys/dev/ramdisk.c
+++ /dev/null
@@ -1,633 +0,0 @@
-/*	$OpenBSD: ramdisk.c,v 1.53 2011/06/05 18:40:33 matthew Exp $	*/
-/*	$NetBSD: ramdisk.c,v 1.8 1996/04/12 08:30:09 leo Exp $	*/
-
-/*
- * Copyright (c) 1995 Gordon W. Ross, Leo Weppelman.
- * 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. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- * 4. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed by
- *			Gordon W. Ross and Leo Weppelman.
- *
- * 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.
- */
-
-/*
- * This implements a general-purpose RAM-disk.
- * See ramdisk.h for notes on the config types.
- *
- * Note that this driver provides the same functionality
- * as the MFS filesystem hack, but this is better because
- * you can use this for any filesystem type you'd like!
- *
- * Credit for most of the kmem ramdisk code goes to:
- *   Leo Weppelman (atari) and Phil Nelson (pc532)
- * Credit for the ideas behind the "user space RAM" code goes
- * to the authors of the MFS implementation.
- */
-
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/systm.h>
-#include <sys/buf.h>
-#include <sys/device.h>
-#include <sys/file.h>
-#include <sys/disk.h>
-#include <sys/proc.h>
-#include <sys/conf.h>
-#include <sys/disklabel.h>
-#include <sys/dkio.h>
-
-#include <uvm/uvm_extern.h>
-
-#include <dev/ramdisk.h>
-
-/*
- * By default, include the user-space functionality.
- * Use:  option RAMDISK_SERVER=0 to turn it off.
- */
-#if !defined(RAMDISK_SERVER) && !defined(SMALL_KERNEL)
-#define	RAMDISK_SERVER 1
-#endif
-
-/*
- * XXX: the "control" unit is (base unit + 16).
- * We should just use the cdev as the "control", but
- * that interferes with the security stuff preventing
- * simultaneous use of raw and block devices.
- *
- * XXX Assumption: 16 RAM-disks are enough!
- */
-#define RD_MAX_UNITS	0x10
-#define RD_IS_CTRL(dev) (DISKPART(dev) == RAW_PART)
-
-/* autoconfig stuff... */
-
-struct rd_softc {
-	struct device sc_dev;	/* REQUIRED first entry */
-	struct disk sc_dk;	/* hook for generic disk handling */
-	struct rd_conf sc_rd;
-#if RAMDISK_SERVER
-	struct buf *sc_buflist;
-#endif
-};
-/* shorthand for fields in sc_rd: */
-#define sc_addr sc_rd.rd_addr
-#define sc_size sc_rd.rd_size
-#define sc_type sc_rd.rd_type
-
-void rdattach(int);
-void rd_attach(struct device *, struct device *, void *);
-void rdgetdisklabel(dev_t, struct rd_softc *, struct disklabel *, int);
-
-/*
- * Some ports (like i386) use a swapgeneric that wants to
- * snoop around in this rd_cd structure.  It is preserved
- * (for now) to remain compatible with such practice.
- * XXX - that practice is questionable...
- */
-struct cfdriver rd_cd = {
-	NULL, "rd", DV_DISK
-};
-
-/*
- * Here we define a cfattach structure for inserting any new rd device into the
- * device tree. This is needed by some archs that look for bootable devices in
- * there.
- */
-int  rd_probe(struct device *, void *, void *);
-int  rd_detach(struct device *, int);
-
-struct cfattach rd_ca = {
-	sizeof(struct rd_softc), rd_probe, rd_attach,
-	rd_detach
-};
-
-void rdstrategy(struct buf *bp);
-
-int   ramdisk_ndevs;
-void *ramdisk_devs[RD_MAX_UNITS];
-
-/*
- * This is called if we are configured as a pseudo-device
- */
-void
-rdattach(int n)
-{
-	struct rd_softc *sc;
-	struct cfdata *cf;
-	int i;
-
-#ifdef	DIAGNOSTIC
-	if (ramdisk_ndevs) {
-		printf("ramdisk: multiple attach calls?\n");
-		return;
-	}
-#endif
-
-	/* XXX:  Are we supposed to provide a default? */
-	if (n < 1)
-		n = 1;
-	if (n > RD_MAX_UNITS)
-		n = RD_MAX_UNITS;
-	ramdisk_ndevs = n;
-
-	/* XXX: Fake-up rd_cd (see above) */
-	rd_cd.cd_ndevs = ramdisk_ndevs;
-	rd_cd.cd_devs  = ramdisk_devs;
-
-	/* Attach as if by autoconfig. */
-	cf = malloc(sizeof(struct cfdata), M_DEVBUF, M_NOWAIT | M_ZERO);
-	if (cf == NULL) {
-		printf("WARNING: no memory for cfdata struct\n");
-		return;
-	}
-	cf->cf_attach = &rd_ca;
-	cf->cf_driver = &rd_cd;
-
-	for (i = 0; i < n; i++) {
-		sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
-		if (snprintf(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname),
-		    "rd%d", i) >= sizeof(sc->sc_dev.dv_xname)) {
-			printf("rdattach: device name too long\n");
-			free(sc, M_DEVBUF);
-			return;
-		}
-		ramdisk_devs[i] = sc;
-		sc->sc_dev.dv_unit = i;
-		sc->sc_dev.dv_class = DV_DISK;
-		sc->sc_dev.dv_parent = NULL;
-		sc->sc_dev.dv_cfdata = cf;
-		TAILQ_INSERT_TAIL(&alldevs, &sc->sc_dev, dv_list);
-		device_ref(&sc->sc_dev);
-		rd_attach(NULL, &sc->sc_dev, NULL);
-	}
-}
-
-void
-rd_attach(struct device *parent, struct device *self, void *aux)
-{
-	struct rd_softc *sc = (struct rd_softc *)self;
-
-	/* XXX - Could accept aux info here to set the config. */
-#ifdef	RAMDISK_HOOKS
-	/*
-	 * This external function might setup a pre-loaded disk.
-	 * All it would need to do is setup the rd_conf struct.
-	 * See sys/arch/sun3/dev/rd_root.c for an example.
-	 */
-	rd_attach_hook(sc->sc_dev.dv_unit, &sc->sc_rd);
-#endif
-
-	/*
-	 * Initialize and attach the disk structure.
-	 */
-	sc->sc_dk.dk_name = sc->sc_dev.dv_xname;
-	disk_attach(&sc->sc_dev, &sc->sc_dk);
-}
-
-/*
- * operational routines:
- * open, close, read, write, strategy,
- * ioctl, dump, size
- */
-
-#if RAMDISK_SERVER
-int rd_server_loop(struct rd_softc *sc);
-int rd_ioctl_server(struct rd_softc *sc,
-		struct rd_conf *urd, struct proc *proc);
-#endif
-int rd_ioctl_kalloc(struct rd_softc *sc,
-		struct rd_conf *urd, struct proc *proc);
-
-dev_type_open(rdopen);
-dev_type_close(rdclose);
-dev_type_read(rdread);
-dev_type_write(rdwrite);
-dev_type_ioctl(rdioctl);
-dev_type_size(rdsize);
-dev_type_dump(rddump);
-
-int
-rddump(dev_t dev, daddr64_t blkno, caddr_t va, size_t size)
-{
-	return (ENODEV);
-}
-
-daddr64_t
-rdsize(dev_t dev)
-{
-	int part, unit;
-	struct rd_softc *sc;
-
-	/* Disallow control units. */
-	unit = DISKUNIT(dev);
-	if (unit >= ramdisk_ndevs)
-		return (0);
-	sc = ramdisk_devs[unit];
-	if (sc == NULL)
-		return (0);
-
-	if (sc->sc_type == RD_UNCONFIGURED)
-		return (0);
-
-	rdgetdisklabel(dev, sc, sc->sc_dk.dk_label, 0);
-	part = DISKPART(dev);
-	if (part >= sc->sc_dk.dk_label->d_npartitions)
-		return (0);
-	return (DL_GETPSIZE(&sc->sc_dk.dk_label->d_partitions[part]) *
-	    (sc->sc_dk.dk_label->d_secsize / DEV_BSIZE));
-}
-
-int
-rdopen(dev_t dev, int flag, int fmt, struct proc *proc)
-{
-	int unit;
-	struct rd_softc *sc;
-
-	unit = DISKUNIT(dev);
-	if (unit >= ramdisk_ndevs)
-		return (ENXIO);
-	sc = ramdisk_devs[unit];
-	if (sc == NULL)
-		return (ENXIO);
-
-	/*
-	 * The control device is not exclusive, and can
-	 * open uninitialized units (so you can setconf).
-	 */
-	if (RD_IS_CTRL(dev))
-		return (0);
-
-#ifdef	RAMDISK_HOOKS
-	/* Call the open hook to allow loading the device. */
-	rd_open_hook(unit, &sc->sc_rd);
-#endif
-
-	/*
-	 * This is a normal, "slave" device, so
-	 * enforce initialized, exclusive open.
-	 */
-	if (sc->sc_type == RD_UNCONFIGURED)
-		return (ENXIO);
-
-	/*
-	 * Make sure we have read the disklabel.
-	 */
-	rdgetdisklabel(dev, sc, sc->sc_dk.dk_label, 0);
-	return (0);
-}
-
-int
-rdclose(dev_t dev, int flag, int fmt, struct proc *proc)
-{
-	return (0);
-}
-
-int
-rdread(dev_t dev, struct uio *uio, int flags)
-{
-	return (physio(rdstrategy, dev, B_READ, minphys, uio));
-}
-
-int
-rdwrite(dev_t dev, struct uio *uio, int flags)
-{
-	return (physio(rdstrategy, dev, B_WRITE, minphys, uio));
-}
-
-/*
- * Handle I/O requests, either directly, or
- * by passing them to the server process.
- */
-void
-rdstrategy(struct buf *bp)
-{
-	int unit, s;
-	struct rd_softc *sc;
-	caddr_t addr;
-	size_t off, xfer;
-
-	unit = DISKUNIT(bp->b_dev);
-	sc = ramdisk_devs[unit];
-
-	/* Sort rogue requests out */
-	if (sc == NULL || bp->b_blkno < 0 ||
-	    (bp->b_bcount % sc->sc_dk.dk_label->d_secsize) != 0) {
-		bp->b_error = EINVAL;
-		goto bad;
-	}
-
-	/* Do not write on "no trespassing" areas... */
-	if (bounds_check_with_label(bp, sc->sc_dk.dk_label) <= 0)
-		goto bad;
-
-	switch (sc->sc_type) {
-#if RAMDISK_SERVER
-	case RD_UMEM_SERVER:
-		/* Just add this job to the server's queue. */
-		bp->b_actf = sc->sc_buflist;
-		sc->sc_buflist = bp;
-		if (bp->b_actf == NULL) {
-			/* server queue was empty. */
-			wakeup((caddr_t)sc);
-			/* see rd_server_loop() */
-		}
-		/* no biodone in this case */
-		return;
-#endif	/* RAMDISK_SERVER */
-
-	case RD_KMEM_FIXED:
-	case RD_KMEM_ALLOCATED:
-		/* These are in kernel space.  Access directly. */
-		bp->b_resid = bp->b_bcount;
-		off = (bp->b_blkno << DEV_BSHIFT);
-		xfer = bp->b_bcount;
-		if (xfer > (sc->sc_size - off))
-			xfer = (sc->sc_size - off);
-		addr = sc->sc_addr + off;
-		if (bp->b_flags & B_READ)
-			bcopy(addr, bp->b_data, xfer);
-		else
-			bcopy(bp->b_data, addr, xfer);
-		bp->b_resid -= xfer;
-		break;
-
-	default:
-		bp->b_error = EIO;
-bad:
-		bp->b_flags |= B_ERROR;
-		bp->b_resid = bp->b_bcount;
-		break;
-	}
-
-	s = splbio();
-	biodone(bp);
-	splx(s);
-}
-
-int
-rdioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *proc)
-{
-	struct disklabel *lp;
-	struct rd_softc *sc;
-	struct rd_conf *urd;
-	int unit = DISKUNIT(dev), error;
-
-	sc = ramdisk_devs[unit];
-
-	urd = (struct rd_conf *)data;
-	switch (cmd) {
-	case DIOCRLDINFO:
-		if (sc->sc_type == RD_UNCONFIGURED)
-			break;
-		lp = malloc(sizeof(*lp), M_TEMP, M_WAITOK);
-		rdgetdisklabel(dev, sc, lp, 0);
-		bcopy(lp, sc->sc_dk.dk_label, sizeof(*lp));
-		free(lp, M_TEMP);
-		return (0);
-
-	case DIOCGPDINFO:
-		if (sc->sc_type == RD_UNCONFIGURED)
-			break;
-		rdgetdisklabel(dev, sc, (struct disklabel *)data, 1);
-		return (0);
-
-	case DIOCGDINFO:
-		if (sc->sc_type == RD_UNCONFIGURED)
-			break;
-		*(struct disklabel *)data = *(sc->sc_dk.dk_label);
-		return (0);
-
-	case DIOCGPART:
-		((struct partinfo *)data)->disklab = sc->sc_dk.dk_label;
-		((struct partinfo *)data)->part =
-		    &sc->sc_dk.dk_label->d_partitions[DISKPART(dev)];
-		return (0);
-
-	case DIOCWDINFO:
-	case DIOCSDINFO:
-		if (sc->sc_type == RD_UNCONFIGURED)
-			break;
-		if ((flag & FWRITE) == 0)
-			return (EBADF);
-
-		error = setdisklabel(sc->sc_dk.dk_label,
-		    (struct disklabel *)data, sc->sc_dk.dk_openmask);
-		if (error == 0) {
-			if (cmd == DIOCWDINFO)
-				error = writedisklabel(DISKLABELDEV(dev),
-				    rdstrategy, sc->sc_dk.dk_label);
-		}
-		return (error);
-
-	case RD_GETCONF:
-		/* If this is not the control device, punt! */
-		if (RD_IS_CTRL(dev) == 0)
-			break;
-		*urd = sc->sc_rd;
-		return (0);
-
-	case RD_SETCONF:
-		/* If this is not the control device, punt! */
-		if (RD_IS_CTRL(dev) == 0)
-			break;
-		/* Can only set it once. */
-		if (sc->sc_type != RD_UNCONFIGURED)
-			break;
-		switch (urd->rd_type) {
-		case RD_KMEM_ALLOCATED:
-			return (rd_ioctl_kalloc(sc, urd, proc));
-#if RAMDISK_SERVER
-		case RD_UMEM_SERVER:
-			return (rd_ioctl_server(sc, urd, proc));
-#endif
-		default:
-			break;
-		}
-		break;
-
-	default:
-		return (ENOTTY);
-	}
-	return (EINVAL);
-}
-
-void
-rdgetdisklabel(dev_t dev, struct rd_softc *sc, struct disklabel *lp,
-    int spoofonly)
-{
-	bzero(lp, sizeof(struct disklabel));
-
-	lp->d_secsize = DEV_BSIZE;
-	lp->d_ntracks = 1;
-	lp->d_nsectors = sc->sc_size >> DEV_BSHIFT;
-	lp->d_ncylinders = 1;
-	lp->d_secpercyl = lp->d_nsectors;
-	if (lp->d_secpercyl == 0) {
-		lp->d_secpercyl = 100;
-		/* as long as it's not 0 - readdisklabel divides by it (?) */
-	}
-
-	strncpy(lp->d_typename, "RAM disk", sizeof(lp->d_typename));
-	lp->d_type = DTYPE_SCSI;
-	strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname));
-	DL_SETDSIZE(lp, lp->d_nsectors);
-	lp->d_version = 1;
-
-	lp->d_magic = DISKMAGIC;
-	lp->d_magic2 = DISKMAGIC;
-	lp->d_checksum = dkcksum(lp);
-
-	/*
-	 * Call the generic disklabel extraction routine
-	 */
-	readdisklabel(DISKLABELDEV(dev), rdstrategy, lp, spoofonly);
-}
-
-/*
- * Handle ioctl RD_SETCONF for (sc_type == RD_KMEM_ALLOCATED)
- * Just allocate some kernel memory and return.
- */
-int
-rd_ioctl_kalloc(struct rd_softc *sc, struct rd_conf *urd, struct proc *proc)
-{
-	vaddr_t addr;
-	vsize_t size;
-
-	/* Sanity check the size. */
-	size = urd->rd_size;
-	addr = uvm_km_zalloc(kernel_map, size);
-	if (!addr)
-		return (ENOMEM);
-
-	/* This unit is now configured. */
-	sc->sc_addr = (caddr_t)addr; 	/* kernel space */
-	sc->sc_size = (size_t)size;
-	sc->sc_type = RD_KMEM_ALLOCATED;
-	return (0);
-}
-
-int
-rd_probe(struct device *parent, void *match_, void *aux)
-{
-	return (0);
-}
-
-int
-rd_detach(struct device *self, int flags)
-{
-	return (0);
-}
-
-#if RAMDISK_SERVER
-
-/*
- * Handle ioctl RD_SETCONF for (sc_type == RD_UMEM_SERVER)
- * Set config, then become the I/O server for this unit.
- */
-int
-rd_ioctl_server(struct rd_softc *sc, struct rd_conf *urd, struct proc *proc)
-{
-	vaddr_t end;
-	int error;
-
-	/* Sanity check addr, size. */
-	end = (vaddr_t) (urd->rd_addr + urd->rd_size);
-
-	if ((end >= VM_MAXUSER_ADDRESS) || (end < ((vaddr_t) urd->rd_addr)) )
-		return (EINVAL);
-
-	/* This unit is now configured. */
-	sc->sc_addr = urd->rd_addr; 	/* user space */
-	sc->sc_size = urd->rd_size;
-	sc->sc_type = RD_UMEM_SERVER;
-
-	/* Become the server daemon */
-	error = rd_server_loop(sc);
-
-	/* This server is now going away! */
-	sc->sc_type = RD_UNCONFIGURED;
-	sc->sc_addr = 0;
-	sc->sc_size = 0;
-	return (error);
-}	
-
-int	rd_sleep_pri = PWAIT | PCATCH;
-
-int
-rd_server_loop(struct rd_softc *sc)
-{
-	struct buf *bp;
-	caddr_t addr;	/* user space address */
-	size_t  off;	/* offset into "device" */
-	size_t  xfer;	/* amount to transfer */
-	int error, s;
-
-	for (;;) {
-		/* Wait for some work to arrive. */
-		while (sc->sc_buflist == NULL) {
-			error = tsleep((caddr_t)sc, rd_sleep_pri, "rd_idle", 0);
-			if (error)
-				return (error);
-		}
-
-		/* Unlink buf from head of list. */
-		bp = sc->sc_buflist;
-		sc->sc_buflist = bp->b_actf;
-		bp->b_actf = NULL;
-
-		/* Do the transfer to/from user space. */
-		error = 0;
-		bp->b_resid = bp->b_bcount;
-		off = (bp->b_blkno << DEV_BSHIFT);
-		if (off >= sc->sc_size) {
-			if (bp->b_flags & B_READ)
-				goto done;	/* EOF (not an error) */
-			error = EIO;
-			goto done;
-		}
-		xfer = bp->b_resid;
-		if (xfer > (sc->sc_size - off))
-			xfer = (sc->sc_size - off);
-		addr = sc->sc_addr + off;
-		if (bp->b_flags & B_READ)
-			error = copyin(addr, bp->b_data, xfer);
-		else
-			error = copyout(bp->b_data, addr, xfer);
-		if (!error)
-			bp->b_resid -= xfer;
-
-	done:
-		if (error) {
-			bp->b_error = error;
-			bp->b_flags |= B_ERROR;
-		}
-		s = splbio();
-		biodone(bp);
-		splx(s);
-	}
-}
-
-#endif	/* RAMDISK_SERVER */
diff --git a/sys/dev/ramdisk.h b/sys/dev/ramdisk.h
deleted file mode 100644
index f2be89fa350..00000000000
--- a/sys/dev/ramdisk.h
+++ /dev/null
@@ -1,91 +0,0 @@
-/*	$OpenBSD: ramdisk.h,v 1.5 2002/03/14 01:26:52 millert Exp $	*/
-/*	$NetBSD: ramdisk.h,v 1.4 1996/03/22 23:02:04 gwr Exp $	*/
-
-/*
- * Copyright (c) 1995 Gordon W. Ross
- * 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. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- * 4. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed by Gordon W. Ross
- *
- * 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.
- */
-
-/*
- * RAM-disk ioctl functions:
- */
-
-#include <sys/ioccom.h>
-
-struct rd_conf {
-	caddr_t rd_addr;
-	size_t  rd_size;
-	int     rd_type;
-};
-
-#define RD_GETCONF	_IOR('r', 0, struct rd_conf)	/* get unit config */
-#define RD_SETCONF	_IOW('r', 1, struct rd_conf)	/* set unit config */
-
-/*
- * There are three configurations supported for each unit,
- * reflected in the value of the rd_type field:
- */
-#define RD_UNCONFIGURED 0
-/*
- *     Not yet configured.  Open returns ENXIO.
- */
-#define RD_KMEM_FIXED	1
-/*
- *     Disk image resident in kernel (patched in or loaded).
- *     Requires that the function: rd_set_kmem() is called to
- *     attach the (initialized) kernel memory to be used by the
- *     device.  It can be initialized by an "open hook" if this
- *     driver is compiled with the RD_OPEN_HOOK option.
- *     No attempt will ever be made to free this memory.
- */
-#define RD_KMEM_ALLOCATED 2
-/*
- *     Small, wired-down chunk of kernel memory obtained from
- *     kmem_alloc().  The allocation is performed by an ioctl
- *     call on the "control" unit (regular unit + 16)
- */
-#define RD_UMEM_SERVER 3
-/*
- *     Indirect access to user-space of a user-level server.
- *     (Like the MFS hack, but better! 8^)  Device operates
- *     only while the server has the control device open and
- *     continues to service I/O requests.  The process that
- *     does this setconf will become the I/O server.  This
- *     configuration type can be disabled using:
- *         option  RAMDISK_SERVER=0
- */
-
-#ifdef	_KERNEL
-/*
- * If the option RAMDISK_HOOKS is on, then these functions are
- * called by the ramdisk driver to allow machine-dependent to
- * match/configure and/or load each ramdisk unit.
- */
-extern void rd_attach_hook(int unit, struct rd_conf *);
-extern void rd_open_hook(int unit, struct rd_conf *);
-#endif