Module Name: src
Committed By: uebayasi
Date: Thu Aug 19 12:36:59 UTC 2010
Modified Files:
src/share/man/man4 [uebayasi-xip]: md.4
src/sys/arch/evbppc/conf [uebayasi-xip]: OPENBLOCKS266 majors.evbppc
src/sys/arch/powerpc/conf [uebayasi-xip]: files.powerpc
src/sys/conf [uebayasi-xip]: files
Added Files:
src/share/man/man4 [uebayasi-xip]: xmd.4
src/sys/arch/powerpc/powerpc [uebayasi-xip]: xmd_machdep.c
src/sys/dev [uebayasi-xip]: xmd.c xmdvar.h
Log Message:
Initial addition of xmd(4), XIP memory disk.
To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.5.26.1 src/share/man/man4/md.4
cvs rdiff -u -r0 -r1.1.2.1 src/share/man/man4/xmd.4
cvs rdiff -u -r1.46.2.2 -r1.46.2.3 src/sys/arch/evbppc/conf/OPENBLOCKS266
cvs rdiff -u -r1.28.6.1 -r1.28.6.2 src/sys/arch/evbppc/conf/majors.evbppc
cvs rdiff -u -r1.71.4.2 -r1.71.4.3 src/sys/arch/powerpc/conf/files.powerpc
cvs rdiff -u -r0 -r1.1.2.1 src/sys/arch/powerpc/powerpc/xmd_machdep.c
cvs rdiff -u -r1.974.2.7 -r1.974.2.8 src/sys/conf/files
cvs rdiff -u -r0 -r1.1.2.1 src/sys/dev/xmd.c src/sys/dev/xmdvar.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/md.4
diff -u src/share/man/man4/md.4:1.5 src/share/man/man4/md.4:1.5.26.1
--- src/share/man/man4/md.4:1.5 Sun Feb 25 04:22:01 2007
+++ src/share/man/man4/md.4 Thu Aug 19 12:36:59 2010
@@ -1,4 +1,4 @@
-.\" $NetBSD: md.4,v 1.5 2007/02/25 04:22:01 uwe Exp $
+.\" $NetBSD: md.4,v 1.5.26.1 2010/08/19 12:36:59 uebayasi Exp $
.\"
.\" This file is in the public domain.
.\"
@@ -35,5 +35,6 @@
.El
.Sh SEE ALSO
.Xr options 4 ,
+.Xr xmd 4 ,
.Xr mdconfig 8 ,
.Xr mdsetimage 8
Index: src/sys/arch/evbppc/conf/OPENBLOCKS266
diff -u src/sys/arch/evbppc/conf/OPENBLOCKS266:1.46.2.2 src/sys/arch/evbppc/conf/OPENBLOCKS266:1.46.2.3
--- src/sys/arch/evbppc/conf/OPENBLOCKS266:1.46.2.2 Wed Aug 11 14:03:58 2010
+++ src/sys/arch/evbppc/conf/OPENBLOCKS266 Thu Aug 19 12:36:58 2010
@@ -1,4 +1,4 @@
-# $NetBSD: OPENBLOCKS266,v 1.46.2.2 2010/08/11 14:03:58 uebayasi Exp $
+# $NetBSD: OPENBLOCKS266,v 1.46.2.3 2010/08/19 12:36:58 uebayasi Exp $
#
# GENERIC -- everything that's currently supported
#
@@ -7,7 +7,7 @@
#options INCLUDE_CONFIG_FILE # embed config file in kernel binary
-#ident "OPENBLOCKS266-$Revision: 1.46.2.2 $"
+#ident "OPENBLOCKS266-$Revision: 1.46.2.3 $"
maxusers 32
@@ -197,6 +197,7 @@
#pseudo-device fss # file system snapshot device
#pseudo-device md 1 # memory disk device
#pseudo-device vnd # disk-like interface to files
+#pseudo-device xmd 1 # XIP memory disk device
# network pseudo-devices
pseudo-device loop # network loopback
Index: src/sys/arch/evbppc/conf/majors.evbppc
diff -u src/sys/arch/evbppc/conf/majors.evbppc:1.28.6.1 src/sys/arch/evbppc/conf/majors.evbppc:1.28.6.2
--- src/sys/arch/evbppc/conf/majors.evbppc:1.28.6.1 Wed Aug 11 13:56:27 2010
+++ src/sys/arch/evbppc/conf/majors.evbppc Thu Aug 19 12:36:58 2010
@@ -1,4 +1,4 @@
-# $NetBSD: majors.evbppc,v 1.28.6.1 2010/08/11 13:56:27 uebayasi Exp $
+# $NetBSD: majors.evbppc,v 1.28.6.2 2010/08/19 12:36:58 uebayasi Exp $
#
# Device majors for evbppc
# (When possible, make entries the same as macppc)
@@ -81,6 +81,7 @@
device-major nsmb char 98 nsmb
device-major xlcom char 99 xlcom
device-major flash char 100 block 15 flash
+device-major xmd char 101 block 16 xmd
# Majors up to 143 are reserved for machine-dependant drivers.
# New machine-independent driver majors are assigned in
Index: src/sys/arch/powerpc/conf/files.powerpc
diff -u src/sys/arch/powerpc/conf/files.powerpc:1.71.4.2 src/sys/arch/powerpc/conf/files.powerpc:1.71.4.3
--- src/sys/arch/powerpc/conf/files.powerpc:1.71.4.2 Wed Aug 11 13:20:07 2010
+++ src/sys/arch/powerpc/conf/files.powerpc Thu Aug 19 12:36:58 2010
@@ -1,4 +1,4 @@
-# $NetBSD: files.powerpc,v 1.71.4.2 2010/08/11 13:20:07 uebayasi Exp $
+# $NetBSD: files.powerpc,v 1.71.4.3 2010/08/19 12:36:58 uebayasi Exp $
defflag opt_altivec.h ALTIVEC K_ALTIVEC
defflag opt_openpic.h OPENPIC OPENPIC_SERIAL_MODE
@@ -94,3 +94,5 @@
file arch/powerpc/powerpc/linux_sigcode.S compat_linux
file arch/powerpc/powerpc/linux_trap.c compat_linux
file arch/powerpc/powerpc/linux_syscall.c compat_linux
+
+file arch/powerpc/powerpc/xmd_machdep.c xmd
Index: src/sys/conf/files
diff -u src/sys/conf/files:1.974.2.7 src/sys/conf/files:1.974.2.8
--- src/sys/conf/files:1.974.2.7 Tue Aug 17 06:45:56 2010
+++ src/sys/conf/files Thu Aug 19 12:36:58 2010
@@ -1,4 +1,4 @@
-# $NetBSD: files,v 1.974.2.7 2010/08/17 06:45:56 uebayasi Exp $
+# $NetBSD: files,v 1.974.2.8 2010/08/19 12:36:58 uebayasi Exp $
# @(#)files.newconf 7.5 (Berkeley) 5/10/93
version 20100430
@@ -271,6 +271,10 @@
defparam opt_md.h MEMORY_DISK_SERVER=1 MEMORY_DISK_ROOT_SIZE
MEMORY_DISK_RBFLAGS
+# XIP memory (ram) disk options
+#
+defflag opt_xmd.h XMD_ROOT_SIZE
+
defflag opt_tftproot.h TFTPROOT TFTPROOT_DEBUG
# Support for hardware performance monitoring counters
@@ -1256,6 +1260,7 @@
defpseudodev cgd: disk, des, blowfish, cast128, rijndael
defpseudodev md: disk
defpseudodev fss: disk
+defpseudodev xmd: disk
defpseudo pty: tty
defpseudo rnd
@@ -1415,6 +1420,7 @@
file dev/sequencer.c sequencer needs-flag
file dev/video.c video needs-flag
file dev/vnd.c vnd needs-flag
+file dev/xmd.c xmd needs-count
file kern/bufq_disksort.c bufq_disksort
file kern/bufq_fcfs.c bufq_fcfs
file kern/bufq_priocscan.c bufq_priocscan
Added files:
Index: src/share/man/man4/xmd.4
diff -u /dev/null src/share/man/man4/xmd.4:1.1.2.1
--- /dev/null Thu Aug 19 12:36:59 2010
+++ src/share/man/man4/xmd.4 Thu Aug 19 12:36:59 2010
@@ -0,0 +1,30 @@
+.\" $NetBSD: xmd.4,v 1.1.2.1 2010/08/19 12:36:59 uebayasi Exp $
+.\"
+.\" This file is in the public domain.
+.\"
+.Dd August 19, 2010
+.Dt XMD 4
+.Os
+.Sh NAME
+.Nm xmd
+.Nd XIP memory disk
+.Sh SYNOPSIS
+.Cd "pseudo-device xmd" Op Ar count
+.Sh DESCRIPTION
+The
+.Nm
+driver enables use of system or user memory as a disk, which can be
+mounted as XIP (eXecute-In-Place), so that filesystem data are read
+without consuming intermediate page cache buffers.
+.Pp
+Memory for the disk is allocated within the kernel and set with
+.Xr mdsetimage 8
+before the
+.Nm
+device may be used as a disk.
+.Nm
+disks should be mounted as read-only to enable XIP.
+.Sh SEE ALSO
+.Xr md 4 ,
+.Xr options 4 ,
+.Xr mdsetimage 8
Index: src/sys/arch/powerpc/powerpc/xmd_machdep.c
diff -u /dev/null src/sys/arch/powerpc/powerpc/xmd_machdep.c:1.1.2.1
--- /dev/null Thu Aug 19 12:36:59 2010
+++ src/sys/arch/powerpc/powerpc/xmd_machdep.c Thu Aug 19 12:36:58 2010
@@ -0,0 +1,69 @@
+/* $NetBSD: xmd_machdep.c,v 1.1.2.1 2010/08/19 12:36:58 uebayasi Exp $ */
+
+/*-
+ * Copyright (c) 2010 The NetBSD Foundation, Inc.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "opt_xip.h"
+
+#include <sys/param.h>
+#include <sys/mman.h>
+
+#include <uvm/uvm_page.h>
+
+#include <dev/xmdvar.h>
+
+paddr_t
+xmd_machdep_mmap(vaddr_t addr, off_t off, int prot)
+{
+
+ /* addr is in PA == VA RAM area. */
+ KASSERT(addr >= 0x00000000);
+ KASSERT(addr < 0x80000000);
+
+ return addr;
+}
+
+void *
+xmd_machdep_physload(vaddr_t addr, size_t size)
+{
+ paddr_t s, e, as, ae;
+
+ /* addr is in PA == VA RAM area. */
+ KASSERT(addr >= 0x00000000);
+ KASSERT(addr < 0x80000000);
+
+ s = as = (addr) >> PAGE_SHIFT;
+ e = ae = (addr + size) >> PAGE_SHIFT;
+
+ return uvm_page_physload_device(s, e, as, ae, PROT_READ, 0);
+}
+
+void
+xmd_machdep_physunload(void *phys)
+{
+
+ uvm_page_physunload_device(phys);
+}
Index: src/sys/dev/xmd.c
diff -u /dev/null src/sys/dev/xmd.c:1.1.2.1
--- /dev/null Thu Aug 19 12:36:59 2010
+++ src/sys/dev/xmd.c Thu Aug 19 12:36:58 2010
@@ -0,0 +1,299 @@
+/* $NetBSD: xmd.c,v 1.1.2.1 2010/08/19 12:36:58 uebayasi Exp $ */
+
+/*-
+ * Copyright (c) 2010 Tsubai Masanari. All rights reserved.
+ * Copyright (c) 2010 Masao Uebayashi. 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.
+ *
+ * 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 "opt_xip.h"
+#include "opt_xmd.h"
+
+#ifndef XIP
+#error xmd(4) needs options XIP
+#endif
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/ioctl.h>
+#include <sys/kmem.h>
+#include <sys/buf.h>
+#include <sys/bufq.h>
+#include <sys/device.h>
+#include <sys/disk.h>
+#include <sys/disklabel.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/kmem.h>
+
+#include <machine/vmparam.h>
+
+#include <dev/xmdvar.h>
+
+struct xmd_softc {
+ vaddr_t sc_addr;
+ size_t sc_size;
+
+ void *sc_phys;
+
+ struct disk sc_dkdev;
+ struct bufq_state *sc_buflist;
+};
+
+void xmdattach(int);
+static void xmd_attach(device_t, device_t, void *);
+static int xmd_detach(device_t, int);
+static dev_type_open(xmd_open);
+static dev_type_close(xmd_close);
+static dev_type_ioctl(xmd_ioctl);
+static dev_type_mmap(xmd_mmap);
+static dev_type_strategy(xmd_strategy);
+static dev_type_size(xmd_size);
+
+struct bdevsw xmd_bdevsw = {
+ xmd_open, xmd_close, xmd_strategy, xmd_ioctl,
+ nodump, xmd_size, D_DISK | D_MPSAFE
+};
+
+struct cdevsw xmd_cdevsw = {
+ nullopen, nullclose, nullread, nowrite, xmd_ioctl,
+ nostop, notty, nopoll, xmd_mmap, nokqfilter
+};
+
+extern struct cfdriver xmd_cd;
+CFATTACH_DECL3_NEW(xmd, sizeof(struct xmd_softc),
+ NULL, xmd_attach, xmd_detach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN);
+
+static struct dkdriver xmddkdriver = { xmd_strategy, NULL };
+
+const char md_root_image[XMD_ROOT_SIZE << DEV_BSHIFT] __aligned(PAGE_SIZE) =
+ "|This is the root ramdisk!\n";
+const size_t md_root_size = XMD_ROOT_SIZE << DEV_BSHIFT;
+
+void
+xmdattach(int n)
+{
+ int i;
+ cfdata_t cf;
+
+ if (config_cfattach_attach("xmd", &xmd_ca)) {
+ aprint_error("xmd: cfattach_attach failed\n");
+ return;
+ }
+
+ /* XXX Support single instance for now. */
+ KASSERT(n == 1);
+
+ for (i = 0; i < n; i++) {
+ cf = kmem_alloc(sizeof(*cf), KM_SLEEP);
+ KASSERT(cf != NULL);
+ cf->cf_name = "xmd";
+ cf->cf_atname = "xmd";
+ cf->cf_unit = i;
+ cf->cf_fstate = FSTATE_NOTFOUND;
+ (void)config_attach_pseudo(cf);
+ }
+}
+
+static void
+xmd_attach(device_t parent, device_t self, void *aux)
+{
+ struct xmd_softc *sc = device_private(self);
+
+ sc->sc_addr = (vaddr_t)md_root_image;
+ sc->sc_size = (size_t)md_root_size;
+
+#ifdef XIP
+ sc->sc_phys = xmd_machdep_physload(sc->sc_addr, sc->sc_size);
+#endif
+
+ bufq_alloc(&sc->sc_buflist, "fcfs", 0);
+
+ disk_init(&sc->sc_dkdev, device_xname(self), &xmddkdriver);
+ disk_attach(&sc->sc_dkdev);
+
+ if (!pmf_device_register(self, NULL, NULL))
+ aprint_error_dev(self, "couldn't establish power handler\n");
+}
+
+static int
+xmd_detach(device_t self, int flags)
+{
+ struct xmd_softc *sc = device_private(self);
+ int rc;
+
+ rc = 0;
+ mutex_enter(&sc->sc_dkdev.dk_openlock);
+ if (sc->sc_dkdev.dk_openmask == 0)
+ ; /* nothing to do */
+ else if ((flags & DETACH_FORCE) == 0)
+ rc = EBUSY;
+ mutex_exit(&sc->sc_dkdev.dk_openlock);
+
+ if (rc != 0)
+ return rc;
+
+ pmf_device_deregister(self);
+ disk_detach(&sc->sc_dkdev);
+ disk_destroy(&sc->sc_dkdev);
+ bufq_free(sc->sc_buflist);
+ return 0;
+}
+
+static int
+xmd_open(dev_t dev, int flags, int fmt, struct lwp *l)
+{
+ struct xmd_softc *sc = device_lookup_private(&xmd_cd, DISKUNIT(dev));
+ struct disk *dk = &sc->sc_dkdev;
+ const int part = DISKUNIT(dev);
+ const int pmask = 1 << part;
+
+ if (sc == NULL)
+ return ENXIO;
+
+ mutex_enter(&dk->dk_openlock);
+ switch (fmt) {
+ case S_IFCHR:
+ dk->dk_copenmask |= pmask;
+ break;
+ case S_IFBLK:
+ dk->dk_bopenmask |= pmask;
+ break;
+ }
+ dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask;
+ mutex_exit(&dk->dk_openlock);
+
+ return 0;
+}
+
+static int
+xmd_close(dev_t dev, int flags, int fmt, struct lwp *l)
+{
+
+ return 0;
+}
+
+int
+xmd_ioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
+{
+ struct xmd_softc *sc = device_lookup_private(&xmd_cd, DISKUNIT(dev));
+ const int part = DISKUNIT(dev);
+ int error = 0;
+
+ if (sc == NULL)
+ return -1;
+
+ switch (cmd) {
+#ifdef XIP
+ case DIOCGPHYSSEG:
+ if (sc->sc_phys == NULL)
+ error = EINVAL;
+ else
+ *(void **)data = sc->sc_phys;
+ break;
+#endif
+
+ case DIOCGDINFO:
+ *(struct disklabel *)data = *sc->sc_dkdev.dk_label;
+ break;
+
+ case DIOCGPART:
+ ((struct partinfo *)data)->disklab = sc->sc_dkdev.dk_label;
+ ((struct partinfo *)data)->part =
+ &sc->sc_dkdev.dk_label->d_partitions[part];
+ break;
+
+ default:
+ error = EINVAL;
+ break;
+ }
+
+ return error;
+}
+
+paddr_t
+xmd_mmap(dev_t dev, off_t off, int prot)
+{
+ struct xmd_softc *sc = device_lookup_private(&xmd_cd, DISKUNIT(dev));
+
+ if (sc == NULL)
+ return -1;
+
+ if ((u_int64_t)off >= sc->sc_size)
+ return -1;
+
+ return xmd_machdep_mmap(sc->sc_addr, off, prot);
+}
+
+static void
+xmd_strategy(struct buf *bp)
+{
+ struct xmd_softc *sc;
+ void *addr;
+ size_t off, count;
+
+ sc = device_lookup_private(&xmd_cd, DISKUNIT(bp->b_dev));
+
+ off = bp->b_blkno << DEV_BSHIFT;
+
+ /* XXX is b_bcount==0 legal? */
+
+ if (off >= sc->sc_size) {
+ if (bp->b_flags & B_READ)
+ /* XXX why not error? */
+ goto done;
+ bp->b_error = EIO;
+ goto done;
+ }
+
+ if (bp->b_bcount <= (sc->sc_size - off))
+ count = bp->b_bcount;
+ else
+ count = sc->sc_size - off;
+
+ addr = (void *)(sc->sc_addr + off);
+
+ if (bp->b_flags & B_READ)
+ memcpy(bp->b_data, addr, count);
+ else
+ panic("%s: block write is not supported", __func__);
+
+ bp->b_resid = bp->b_bcount - count;
+
+ done:
+ biodone(bp);
+}
+
+static int
+xmd_size(dev_t dev)
+{
+ struct xmd_softc *sc;
+
+ sc = device_lookup_private(&xmd_cd, DISKUNIT(dev));
+ if (sc == NULL)
+ return 0;
+
+ return sc->sc_size >> DEV_BSHIFT;
+}
Index: src/sys/dev/xmdvar.h
diff -u /dev/null src/sys/dev/xmdvar.h:1.1.2.1
--- /dev/null Thu Aug 19 12:36:59 2010
+++ src/sys/dev/xmdvar.h Thu Aug 19 12:36:58 2010
@@ -0,0 +1,36 @@
+/* $NetBSD: xmdvar.h,v 1.1.2.1 2010/08/19 12:36:58 uebayasi Exp $ */
+
+/*-
+ * Copyright (c) 2010 The NetBSD Foundation, Inc.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _DEV_XMDVAR_H_
+#define _DEV_XMDVAR_H_
+
+paddr_t xmd_machdep_mmap(vaddr_t, off_t, int);
+void *xmd_machdep_physload(vaddr_t, size_t);
+void xmd_machdep_physunload(void *);
+
+#endif
