Update files to match FreeBSD layout

Add compatibility with Newlib header files.  Some FreeBSD header files
are mapped by the translation script:

     o rtems/bsd/sys/_types.h
     o rtems/bsd/sys/errno.h
     o rtems/bsd/sys/lock.h
     o rtems/bsd/sys/param.h
     o rtems/bsd/sys/resource.h
     o rtems/bsd/sys/time.h
     o rtems/bsd/sys/timespec.h
     o rtems/bsd/sys/types.h
     o rtems/bsd/sys/unistd.h

It is now possible to include <sys/socket.h> directly for example.

Generate one Makefile which builds everything including tests.

6 files changed, 1517 insertions, 0 deletions

diff --git a/freebsd/sys/m32r/include/machine/in_cksum.h b/freebsd/sys/m32r/include/machine/in_cksum.h
new file mode 100644
index 00000000..37d88e2e
--- /dev/null
+++ b/freebsd/sys/m32r/include/machine/in_cksum.h
@@ -0,0 +1,77 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * 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.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *	from tahoe:	in_cksum.c	1.2	86/01/05
+ *	from:		@(#)in_cksum.c	1.3 (Berkeley) 1/19/91
+ *	from: Id: in_cksum.c,v 1.8 1995/12/03 18:35:19 bde Exp
+ *	from: src/sys/alpha/include/in_cksum.h,v 1.7 2005/03/02 21:33:20 joerg
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_IN_CKSUM_H_
+#define	_MACHINE_IN_CKSUM_H_	1
+
+#include <sys/cdefs.h>
+
+#define	in_cksum(m, len)	in_cksum_skip(m, len, 0)
+
+/*
+ * It it useful to have an Internet checksum routine which is inlineable
+ * and optimized specifically for the task of computing IP header checksums
+ * in the normal case (where there are no options and the header length is
+ * therefore always exactly five 32-bit words.
+ */
+#ifdef __CC_SUPPORTS___INLINE
+
+static __inline void
+in_cksum_update(struct ip *ip)
+{
+	int __tmpsum;
+	__tmpsum = (int)ntohs(ip->ip_sum) + 256;
+	ip->ip_sum = htons(__tmpsum + (__tmpsum >> 16));
+}
+
+#else
+
+#define	in_cksum_update(ip)						\
+	do {								\
+		int __tmpsum;						\
+		__tmpsum = (int)ntohs(ip->ip_sum) + 256;		\
+		ip->ip_sum = htons(__tmpsum + (__tmpsum >> 16));	\
+	} while(0)
+
+#endif
+
+#ifdef _KERNEL
+u_int in_cksum_hdr(const struct ip *ip);
+u_short in_addword(u_short sum, u_short b);
+u_short in_pseudo(u_int sum, u_int b, u_int c);
+u_short in_cksum_skip(struct mbuf *m, int len, int skip);
+#endif
+
+#endif /* _MACHINE_IN_CKSUM_H_ */
diff --git a/freebsd/sys/m32r/include/machine/legacyvar.h b/freebsd/sys/m32r/include/machine/legacyvar.h
new file mode 100644
index 00000000..0b0fa433
--- /dev/null
+++ b/freebsd/sys/m32r/include/machine/legacyvar.h
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_LEGACYVAR_H_
+#define	_MACHINE_LEGACYVAR_H_
+
+enum legacy_device_ivars {
+	LEGACY_IVAR_PCIDOMAIN,
+	LEGACY_IVAR_PCIBUS
+};
+
+#define LEGACY_ACCESSOR(var, ivar, type)				\
+    __BUS_ACCESSOR(legacy, var, LEGACY, ivar, type)
+
+LEGACY_ACCESSOR(pcidomain,		PCIDOMAIN,	uint32_t)
+LEGACY_ACCESSOR(pcibus,			PCIBUS,		uint32_t)
+
+#undef LEGACY_ACCESSOR
+
+int	legacy_pcib_maxslots(device_t dev);
+uint32_t legacy_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
+    u_int reg, int bytes);
+int	legacy_pcib_read_ivar(device_t dev, device_t child, int which,
+    uintptr_t *result);
+void	legacy_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
+    u_int reg, u_int32_t data, int bytes);
+int	legacy_pcib_write_ivar(device_t dev, device_t child, int which,
+    uintptr_t value);
+struct resource *legacy_pcib_alloc_resource(device_t dev, device_t child,
+    int type, int *rid, u_long start, u_long end, u_long count, u_int flags);
+
+#endif /* !_MACHINE_LEGACYVAR_H_ */
diff --git a/freebsd/sys/m32r/include/machine/pci_cfgreg.h b/freebsd/sys/m32r/include/machine/pci_cfgreg.h
new file mode 100644
index 00000000..bc72418d
--- /dev/null
+++ b/freebsd/sys/m32r/include/machine/pci_cfgreg.h
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
+ * 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 unmodified, 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 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.
+ *
+ * $FreeBSD$
+ *
+ */
+
+#define CONF1_ADDR_PORT    0x0cf8
+#define CONF1_DATA_PORT    0x0cfc
+
+#define CONF1_ENABLE       0x80000000ul
+#define CONF1_ENABLE_CHK   0x80000000ul
+#define CONF1_ENABLE_MSK   0x7f000000ul
+#define CONF1_ENABLE_CHK1  0xff000001ul
+#define CONF1_ENABLE_MSK1  0x80000001ul
+#define CONF1_ENABLE_RES1  0x80000000ul
+
+#define CONF2_ENABLE_PORT  0x0cf8
+#define CONF2_FORWARD_PORT 0x0cfa
+
+#define CONF2_ENABLE_CHK   0x0e
+#define CONF2_ENABLE_RES   0x0e
+
+int		pcie_cfgregopen(uint64_t base, uint8_t minbus, uint8_t maxbus);
+int		pci_cfgregopen(void);
+u_int32_t	pci_cfgregread(int bus, int slot, int func, int reg, int bytes);
+void		pci_cfgregwrite(int bus, int slot, int func, int reg, u_int32_t data, int bytes);
+void		pci_pir_open(void);
+int		pci_pir_probe(int bus, int require_parse);
+int		pci_pir_route_interrupt(int bus, int device, int func, int pin);
diff --git a/freebsd/sys/m32r/m32r/in_cksum.c b/freebsd/sys/m32r/m32r/in_cksum.c
new file mode 100644
index 00000000..c6f7b568
--- /dev/null
+++ b/freebsd/sys/m32r/m32r/in_cksum.c
@@ -0,0 +1,255 @@
+#include <machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 1988, 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1996
+ *	Matt Thomas <matt@3am-software.com>
+ *
+ * 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 the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *	@(#)in_cksum.c	8.1 (Berkeley) 6/10/93
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/sys/param.h>
+#include <sys/mbuf.h>
+#include <sys/systm.h>
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <machine/in_cksum.h>
+
+/*
+ * Checksum routine for Internet Protocol family headers
+ *    (Portable Alpha version).
+ *
+ * This routine is very heavily used in the network
+ * code and should be modified for each CPU to be as fast as possible.
+ */
+
+#define ADDCARRY(x)  (x > 65535 ? x -= 65535 : x)
+#define REDUCE32							  \
+    {									  \
+	q_util.q = sum;							  \
+	sum = q_util.s[0] + q_util.s[1] + q_util.s[2] + q_util.s[3];	  \
+    }
+#define REDUCE16							  \
+    {									  \
+	q_util.q = sum;							  \
+	l_util.l = q_util.s[0] + q_util.s[1] + q_util.s[2] + q_util.s[3]; \
+	sum = l_util.s[0] + l_util.s[1];				  \
+	ADDCARRY(sum);							  \
+    }
+
+static const u_int32_t in_masks[] = {
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+	/*0 bytes*/ /*1 byte*/	/*2 bytes*/ /*3 bytes*/
+	0x00000000, 0x000000FF, 0x0000FFFF, 0x00FFFFFF,	/* offset 0 */
+	0x00000000, 0x0000FF00, 0x00FFFF00, 0xFFFFFF00,	/* offset 1 */
+	0x00000000, 0x00FF0000, 0xFFFF0000, 0xFFFF0000,	/* offset 2 */
+	0x00000000, 0xFF000000, 0xFF000000, 0xFF000000,	/* offset 3 */
+#else
+	/*0 bytes*/ /*1 byte*/	/*2 bytes*/ /*3 bytes*/
+	0x00000000, 0xFF000000, 0xFFFF0000, 0xFFFFFF00,	/* offset 0 */
+	0x00000000, 0x00FF0000, 0x00FFFF00, 0x00FFFFFF,	/* offset 1 */
+	0x00000000, 0x0000FF00, 0x0000FFFF, 0x0000FFFF,	/* offset 2 */
+	0x00000000, 0x000000FF, 0x000000FF, 0x000000FF,	/* offset 3 */
+#endif
+};
+
+union l_util {
+	u_int16_t s[2];
+	u_int32_t l;
+};
+union q_util {
+	u_int16_t s[4];
+	u_int32_t l[2];
+	u_int64_t q;
+};
+
+static u_int64_t
+in_cksumdata(const void *buf, int len)
+{
+	const u_int32_t *lw = (const u_int32_t *) buf;
+	u_int64_t sum = 0;
+	u_int64_t prefilled;
+	int offset;
+	union q_util q_util;
+
+	if ((3 & (long) lw) == 0 && len == 20) {
+		sum = (u_int64_t) lw[0] + lw[1] + lw[2] + lw[3] + lw[4];
+		REDUCE32;
+		return sum;
+	}
+
+	if ((offset = 3 & (long) lw) != 0) {
+		const u_int32_t *masks = in_masks + (offset << 2);
+		lw = (u_int32_t *) (((long) lw) - offset);
+		sum = *lw++ & masks[len >= 3 ? 3 : len];
+		len -= 4 - offset;
+		if (len <= 0) {
+			REDUCE32;
+			return sum;
+		}
+	}
+#if 0
+	/*
+	 * Force to cache line boundary.
+	 */
+	offset = 32 - (0x1f & (long) lw);
+	if (offset < 32 && len > offset) {
+		len -= offset;
+		if (4 & offset) {
+			sum += (u_int64_t) lw[0];
+			lw += 1;
+		}
+		if (8 & offset) {
+			sum += (u_int64_t) lw[0] + lw[1];
+			lw += 2;
+		}
+		if (16 & offset) {
+			sum += (u_int64_t) lw[0] + lw[1] + lw[2] + lw[3];
+			lw += 4;
+		}
+	}
+#endif
+	/*
+	 * access prefilling to start load of next cache line.
+	 * then add current cache line
+	 * save result of prefilling for loop iteration.
+	 */
+	prefilled = lw[0];
+	while ((len -= 32) >= 4) {
+		u_int64_t prefilling = lw[8];
+		sum += prefilled + lw[1] + lw[2] + lw[3]
+			+ lw[4] + lw[5] + lw[6] + lw[7];
+		lw += 8;
+		prefilled = prefilling;
+	}
+	if (len >= 0) {
+		sum += prefilled + lw[1] + lw[2] + lw[3]
+			+ lw[4] + lw[5] + lw[6] + lw[7];
+		lw += 8;
+	} else {
+		len += 32;
+	}
+	while ((len -= 16) >= 0) {
+		sum += (u_int64_t) lw[0] + lw[1] + lw[2] + lw[3];
+		lw += 4;
+	}
+	len += 16;
+	while ((len -= 4) >= 0) {
+		sum += (u_int64_t) *lw++;
+	}
+	len += 4;
+	if (len > 0)
+		sum += (u_int64_t) (in_masks[len] & *lw);
+	REDUCE32;
+	return sum;
+}
+
+u_short
+in_addword(u_short a, u_short b)
+{
+	u_int64_t sum = a + b;
+
+	ADDCARRY(sum);
+	return (sum);
+}
+
+u_short
+#ifdef __rtems__
+/* Prototype does not match in FreeBSD code */
+in_pseudo(u_int a, u_int b, u_int c)
+#else
+in_pseudo(u_int32_t a, u_int32_t b, u_int32_t c)
+#endif
+{
+	u_int64_t sum;
+	union q_util q_util;
+	union l_util l_util;
+
+	sum = (u_int64_t) a + b + c;
+	REDUCE16;
+	return (sum);
+}
+
+u_short
+in_cksum_skip(struct mbuf *m, int len, int skip)
+{
+	u_int64_t sum = 0;
+	int mlen = 0;
+	int clen = 0;
+	caddr_t addr;
+	union q_util q_util;
+	union l_util l_util;
+
+	len -= skip;
+	for (; skip && m; m = m->m_next) {
+		if (m->m_len > skip) {
+			mlen = m->m_len - skip;
+			addr = mtod(m, caddr_t) + skip;
+			goto skip_start;
+		} else {
+			skip -= m->m_len;
+		}
+	}
+
+	for (; m && len; m = m->m_next) {
+		if (m->m_len == 0)
+			continue;
+		mlen = m->m_len;
+		addr = mtod(m, caddr_t);
+skip_start:
+		if (len < mlen)
+			mlen = len;
+
+		if ((clen ^ (uintptr_t) addr) & 1)
+			sum += in_cksumdata(addr, mlen) << 8;
+		else
+			sum += in_cksumdata(addr, mlen);
+
+		clen += mlen;
+		len -= mlen;
+	}
+	REDUCE16;
+	return (~sum & 0xffff);
+}
+
+u_int in_cksum_hdr(const struct ip *ip)
+{
+	u_int64_t sum = in_cksumdata(ip, sizeof(struct ip));
+	union q_util q_util;
+	union l_util l_util;
+	REDUCE16;
+	return (~sum & 0xffff);
+}
diff --git a/freebsd/sys/m32r/m32r/legacy.c b/freebsd/sys/m32r/m32r/legacy.c
new file mode 100644
index 00000000..2547990c
--- /dev/null
+++ b/freebsd/sys/m32r/m32r/legacy.c
@@ -0,0 +1,347 @@
+#include <machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright 1998 Massachusetts Institute of Technology
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that both the above copyright notice and this
+ * permission notice appear in all copies, that both the above
+ * copyright notice and this permission notice appear in all
+ * supporting documentation, and that the name of M.I.T. not be used
+ * in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.  M.I.T. makes
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
+ * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
+ * SHALL M.I.T. 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * This code implements a system driver for legacy systems that do not
+ * support ACPI or when ACPI support is not present in the kernel.
+ */
+
+#include <rtems/bsd/sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/cpu.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <machine/bus.h>
+#include <sys/pcpu.h>
+#include <sys/rman.h>
+#include <sys/smp.h>
+
+#ifndef __rtems__
+#include <rtems/bsd/local/opt_mca.h>
+#endif /* __rtems__ */
+#ifdef DEV_MCA
+#include <i386/bios/mca_machdep.h>
+#endif
+
+#include <machine/legacyvar.h>
+#include <machine/resource.h>
+
+static MALLOC_DEFINE(M_LEGACYDEV, "legacydrv", "legacy system device");
+struct legacy_device {
+	int			lg_pcibus;
+};
+
+#define DEVTOAT(dev)	((struct legacy_device *)device_get_ivars(dev))
+
+static	int legacy_probe(device_t);
+static	int legacy_attach(device_t);
+static	int legacy_print_child(device_t, device_t);
+static device_t legacy_add_child(device_t bus, u_int order, const char *name,
+				int unit);
+static	int legacy_read_ivar(device_t, device_t, int, uintptr_t *);
+static	int legacy_write_ivar(device_t, device_t, int, uintptr_t);
+
+static device_method_t legacy_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		legacy_probe),
+	DEVMETHOD(device_attach,	legacy_attach),
+	DEVMETHOD(device_detach,	bus_generic_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	DEVMETHOD(device_suspend,	bus_generic_suspend),
+	DEVMETHOD(device_resume,	bus_generic_resume),
+
+	/* Bus interface */
+	DEVMETHOD(bus_print_child,	legacy_print_child),
+	DEVMETHOD(bus_add_child,	legacy_add_child),
+	DEVMETHOD(bus_read_ivar,	legacy_read_ivar),
+	DEVMETHOD(bus_write_ivar,	legacy_write_ivar),
+	DEVMETHOD(bus_alloc_resource,	bus_generic_alloc_resource),
+	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
+	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
+
+	{ 0, 0 }
+};
+
+static driver_t legacy_driver = {
+	"legacy",
+	legacy_methods,
+	1,			/* no softc */
+};
+static devclass_t legacy_devclass;
+
+DRIVER_MODULE(legacy, nexus, legacy_driver, legacy_devclass, 0, 0);
+
+static int
+legacy_probe(device_t dev)
+{
+
+	device_set_desc(dev, "legacy system");
+	device_quiet(dev);
+	return (0);
+}
+
+static int
+legacy_attach(device_t dev)
+{
+	device_t child;
+
+	/*
+	 * Let our child drivers identify any child devices that they
+	 * can find.  Once that is done attach any devices that we
+	 * found.
+	 */
+	bus_generic_probe(dev);
+	bus_generic_attach(dev);
+
+#ifndef PC98
+	/*
+	 * If we didn't see EISA or ISA on a pci bridge, create some
+	 * connection points now so they show up "on motherboard".
+	 */
+	if (!devclass_get_device(devclass_find("eisa"), 0)) {
+		child = BUS_ADD_CHILD(dev, 0, "eisa", 0);
+		if (child == NULL)
+			panic("legacy_attach eisa");
+		device_probe_and_attach(child);
+	}
+#endif
+#ifdef DEV_MCA
+	if (MCA_system && !devclass_get_device(devclass_find("mca"), 0)) {
+        	child = BUS_ADD_CHILD(dev, 0, "mca", 0);
+        	if (child == 0)
+                	panic("legacy_probe mca");
+		device_probe_and_attach(child);
+	}
+#endif
+	if (!devclass_get_device(devclass_find("isa"), 0)) {
+		child = BUS_ADD_CHILD(dev, 0, "isa", 0);
+		if (child == NULL)
+			panic("legacy_attach isa");
+		device_probe_and_attach(child);
+	}
+
+	return 0;
+}
+
+static int
+legacy_print_child(device_t bus, device_t child)
+{
+	struct legacy_device *atdev = DEVTOAT(child);
+	int retval = 0;
+
+	retval += bus_print_child_header(bus, child);
+	if (atdev->lg_pcibus != -1)
+		retval += printf(" pcibus %d", atdev->lg_pcibus);
+	retval += printf(" on motherboard\n");	/* XXX "motherboard", ick */
+
+	return (retval);
+}
+
+static device_t
+legacy_add_child(device_t bus, u_int order, const char *name, int unit)
+{
+	device_t child;
+	struct legacy_device *atdev;
+
+	atdev = malloc(sizeof(struct legacy_device), M_LEGACYDEV,
+	    M_NOWAIT | M_ZERO);
+	if (atdev == NULL)
+		return(NULL);
+	atdev->lg_pcibus = -1;
+
+	child = device_add_child_ordered(bus, order, name, unit);
+	if (child == NULL)
+		free(atdev, M_LEGACYDEV);
+	else
+		/* should we free this in legacy_child_detached? */
+		device_set_ivars(child, atdev);
+
+	return (child);
+}
+
+static int
+legacy_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
+{
+	struct legacy_device *atdev = DEVTOAT(child);
+
+	switch (which) {
+	case LEGACY_IVAR_PCIDOMAIN:
+		*result = 0;
+		break;
+	case LEGACY_IVAR_PCIBUS:
+		*result = atdev->lg_pcibus;
+		break;
+	default:
+		return ENOENT;
+	}
+	return 0;
+}
+	
+
+static int
+legacy_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
+{
+	struct legacy_device *atdev = DEVTOAT(child);
+
+	switch (which) {
+	case LEGACY_IVAR_PCIDOMAIN:
+		return EINVAL;
+	case LEGACY_IVAR_PCIBUS:
+		atdev->lg_pcibus = value;
+		break;
+	default:
+		return ENOENT;
+	}
+	return 0;
+}
+
+/*
+ * Legacy CPU attachment when ACPI is not available.  Drivers like
+ * cpufreq(4) hang off this.
+ */
+static void	cpu_identify(driver_t *driver, device_t parent);
+static int	cpu_read_ivar(device_t dev, device_t child, int index,
+		    uintptr_t *result);
+static device_t cpu_add_child(device_t bus, u_int order, const char *name,
+		    int unit);
+static struct resource_list *cpu_get_rlist(device_t dev, device_t child);
+
+struct cpu_device {
+	struct resource_list cd_rl;
+	struct pcpu *cd_pcpu;
+};
+
+static device_method_t cpu_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_identify,	cpu_identify),
+	DEVMETHOD(device_probe,		bus_generic_probe),
+	DEVMETHOD(device_attach,	bus_generic_attach),
+	DEVMETHOD(device_detach,	bus_generic_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	DEVMETHOD(device_suspend,	bus_generic_suspend),
+	DEVMETHOD(device_resume,	bus_generic_resume),
+
+	/* Bus interface */
+	DEVMETHOD(bus_add_child,	cpu_add_child),
+	DEVMETHOD(bus_read_ivar,	cpu_read_ivar),
+	DEVMETHOD(bus_print_child,	bus_generic_print_child),
+	DEVMETHOD(bus_get_resource_list, cpu_get_rlist),
+	DEVMETHOD(bus_get_resource,	bus_generic_rl_get_resource),
+	DEVMETHOD(bus_set_resource,	bus_generic_rl_set_resource),
+	DEVMETHOD(bus_alloc_resource,	bus_generic_rl_alloc_resource),
+	DEVMETHOD(bus_release_resource,	bus_generic_rl_release_resource),
+	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
+	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
+
+	{ 0, 0 }
+};
+
+static driver_t cpu_driver = {
+	"cpu",
+	cpu_methods,
+	1,		/* no softc */
+};
+static devclass_t cpu_devclass;
+DRIVER_MODULE(cpu, legacy, cpu_driver, cpu_devclass, 0, 0);
+
+static void
+cpu_identify(driver_t *driver, device_t parent)
+{
+	device_t child;
+	int i;
+
+	/*
+	 * Attach a cpuX device for each CPU.  We use an order of 150
+	 * so that these devices are attached after the Host-PCI
+	 * bridges (which are added at order 100).
+	 */
+	for (i = 0; i <= mp_maxid; i++)
+		if (!CPU_ABSENT(i)) {
+			child = BUS_ADD_CHILD(parent, 150, "cpu", i);
+			if (child == NULL)
+				panic("legacy_attach cpu");
+		}
+}
+
+static device_t
+cpu_add_child(device_t bus, u_int order, const char *name, int unit)
+{
+	struct cpu_device *cd;
+	device_t child;
+	struct pcpu *pc;
+
+	if ((cd = malloc(sizeof(*cd), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL)
+		return (NULL);
+
+	resource_list_init(&cd->cd_rl);
+	pc = pcpu_find(device_get_unit(bus));
+	cd->cd_pcpu = pc;
+
+	child = device_add_child_ordered(bus, order, name, unit);
+	if (child != NULL) {
+		pc->pc_device = child;
+		device_set_ivars(child, cd);
+	} else
+		free(cd, M_DEVBUF);
+	return (child);
+}
+
+static struct resource_list *
+cpu_get_rlist(device_t dev, device_t child)
+{
+	struct cpu_device *cpdev;
+
+	cpdev = device_get_ivars(child);
+	return (&cpdev->cd_rl);
+}
+
+static int
+cpu_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
+{
+	struct cpu_device *cpdev;
+
+	if (index != CPU_IVAR_PCPU)
+		return (ENOENT);
+	cpdev = device_get_ivars(child);
+	*result = (uintptr_t)cpdev->cd_pcpu;
+	return (0);
+}
diff --git a/freebsd/sys/m32r/pci/pci_bus.c b/freebsd/sys/m32r/pci/pci_bus.c
new file mode 100644
index 00000000..6627db98
--- /dev/null
+++ b/freebsd/sys/m32r/pci/pci_bus.c
@@ -0,0 +1,729 @@
+#include <machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
+ * 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 unmodified, 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 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/local/opt_cpu.h>
+
+#include <rtems/bsd/sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/sysctl.h>
+
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcib_private.h>
+#include <isa/isavar.h>
+#ifdef CPU_ELAN
+#include <machine/md_var.h>
+#endif
+#include <machine/legacyvar.h>
+#include <machine/pci_cfgreg.h>
+#include <machine/resource.h>
+
+#include <rtems/bsd/local/pcib_if.h>
+
+#ifndef __rtems__
+static int	pcibios_pcib_route_interrupt(device_t pcib, device_t dev,
+    int pin);
+#else /* __rtems__ */
+int	pcibios_pcib_route_interrupt(device_t pcib, device_t dev, int pin);
+#endif /* __rtems__ */
+
+
+int
+legacy_pcib_maxslots(device_t dev)
+{
+	return 31;
+}
+
+/* read configuration space register */
+
+#ifdef __rtems__
+uint32_t
+legacy_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
+			u_int reg, int bytes)
+#else
+u_int32_t
+legacy_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
+			u_int reg, int bytes)
+#endif
+{
+	return(pci_cfgregread(bus, slot, func, reg, bytes));
+}
+
+/* write configuration space register */
+
+void
+legacy_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
+			 u_int reg, u_int32_t data, int bytes)
+{
+	pci_cfgregwrite(bus, slot, func, reg, data, bytes);
+}
+
+/* Pass MSI requests up to the nexus. */
+
+static int
+legacy_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
+    int *irqs)
+{
+	device_t bus;
+
+	bus = device_get_parent(pcib);
+	return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
+	    irqs));
+}
+
+static int
+legacy_pcib_alloc_msix(device_t pcib, device_t dev, int *irq)
+{
+	device_t bus;
+
+	bus = device_get_parent(pcib);
+	return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
+}
+
+static int
+legacy_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
+    uint32_t *data)
+{
+	device_t bus;
+
+	bus = device_get_parent(pcib);
+	return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data));
+}
+
+static const char *
+legacy_pcib_is_host_bridge(int bus, int slot, int func,
+			  uint32_t id, uint8_t class, uint8_t subclass,
+			  uint8_t *busnum)
+{
+	const char *s = NULL;
+	static uint8_t pxb[4];	/* hack for 450nx */
+
+	*busnum = 0;
+
+	switch (id) {
+	case 0x12258086:
+		s = "Intel 824?? host to PCI bridge";
+		/* XXX This is a guess */
+		/* *busnum = legacy_pcib_read_config(0, bus, slot, func, 0x41, 1); */
+		*busnum = bus;
+		break;
+	case 0x71208086:
+		s = "Intel 82810 (i810 GMCH) Host To Hub bridge";
+		break;
+	case 0x71228086:
+		s = "Intel 82810-DC100 (i810-DC100 GMCH) Host To Hub bridge";
+		break;
+	case 0x71248086:
+		s = "Intel 82810E (i810E GMCH) Host To Hub bridge";
+		break;
+	case 0x11308086:
+		s = "Intel 82815 (i815 GMCH) Host To Hub bridge";
+		break;
+	case 0x71808086:
+		s = "Intel 82443LX (440 LX) host to PCI bridge";
+		break;
+	case 0x71908086:
+		s = "Intel 82443BX (440 BX) host to PCI bridge";
+		break;
+	case 0x71928086:
+		s = "Intel 82443BX host to PCI bridge (AGP disabled)";
+		break;
+	case 0x71948086:
+		s = "Intel 82443MX host to PCI bridge";
+		break;
+	case 0x71a08086:
+		s = "Intel 82443GX host to PCI bridge";
+		break;
+	case 0x71a18086:
+		s = "Intel 82443GX host to AGP bridge";
+		break;
+	case 0x71a28086:
+		s = "Intel 82443GX host to PCI bridge (AGP disabled)";
+		break;
+	case 0x84c48086:
+		s = "Intel 82454KX/GX (Orion) host to PCI bridge";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x4a, 1);
+		break;
+	case 0x84ca8086:
+		/*
+		 * For the 450nx chipset, there is a whole bundle of
+		 * things pretending to be host bridges. The MIOC will
+		 * be seen first and isn't really a pci bridge (the
+		 * actual busses are attached to the PXB's). We need to
+		 * read the registers of the MIOC to figure out the
+		 * bus numbers for the PXB channels.
+		 *
+		 * Since the MIOC doesn't have a pci bus attached, we
+		 * pretend it wasn't there.
+		 */
+		pxb[0] = legacy_pcib_read_config(0, bus, slot, func,
+						0xd0, 1); /* BUSNO[0] */
+		pxb[1] = legacy_pcib_read_config(0, bus, slot, func,
+						0xd1, 1) + 1;	/* SUBA[0]+1 */
+		pxb[2] = legacy_pcib_read_config(0, bus, slot, func,
+						0xd3, 1); /* BUSNO[1] */
+		pxb[3] = legacy_pcib_read_config(0, bus, slot, func,
+						0xd4, 1) + 1;	/* SUBA[1]+1 */
+		return NULL;
+	case 0x84cb8086:
+		switch (slot) {
+		case 0x12:
+			s = "Intel 82454NX PXB#0, Bus#A";
+			*busnum = pxb[0];
+			break;
+		case 0x13:
+			s = "Intel 82454NX PXB#0, Bus#B";
+			*busnum = pxb[1];
+			break;
+		case 0x14:
+			s = "Intel 82454NX PXB#1, Bus#A";
+			*busnum = pxb[2];
+			break;
+		case 0x15:
+			s = "Intel 82454NX PXB#1, Bus#B";
+			*busnum = pxb[3];
+			break;
+		}
+		break;
+	case 0x1A308086:
+		s = "Intel 82845 Host to PCI bridge";
+		break;
+
+		/* AMD -- vendor 0x1022 */
+	case 0x30001022:
+		s = "AMD Elan SC520 host to PCI bridge";
+#ifdef CPU_ELAN
+		init_AMD_Elan_sc520();
+#else
+		printf(
+"*** WARNING: missing CPU_ELAN -- timekeeping may be wrong\n");
+#endif
+		break;
+	case 0x70061022:
+		s = "AMD-751 host to PCI bridge";
+		break;
+	case 0x700e1022:
+		s = "AMD-761 host to PCI bridge";
+		break;
+
+		/* SiS -- vendor 0x1039 */
+	case 0x04961039:
+		s = "SiS 85c496";
+		break;
+	case 0x04061039:
+		s = "SiS 85c501";
+		break;
+	case 0x06011039:
+		s = "SiS 85c601";
+		break;
+	case 0x55911039:
+		s = "SiS 5591 host to PCI bridge";
+		break;
+	case 0x00011039:
+		s = "SiS 5591 host to AGP bridge";
+		break;
+
+		/* VLSI -- vendor 0x1004 */
+	case 0x00051004:
+		s = "VLSI 82C592 Host to PCI bridge";
+		break;
+
+		/* XXX Here is MVP3, I got the datasheet but NO M/B to test it  */
+		/* totally. Please let me know if anything wrong.            -F */
+		/* XXX need info on the MVP3 -- any takers? */
+	case 0x05981106:
+		s = "VIA 82C598MVP (Apollo MVP3) host bridge";
+		break;
+
+		/* AcerLabs -- vendor 0x10b9 */
+		/* Funny : The datasheet told me vendor id is "10b8",sub-vendor */
+		/* id is '10b9" but the register always shows "10b9". -Foxfair  */
+	case 0x154110b9:
+		s = "AcerLabs M1541 (Aladdin-V) PCI host bridge";
+		break;
+
+		/* OPTi -- vendor 0x1045 */
+	case 0xc7011045:
+		s = "OPTi 82C700 host to PCI bridge";
+		break;
+	case 0xc8221045:
+		s = "OPTi 82C822 host to PCI Bridge";
+		break;
+
+		/* ServerWorks -- vendor 0x1166 */
+	case 0x00051166:
+		s = "ServerWorks NB6536 2.0HE host to PCI bridge";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);
+		break;
+
+	case 0x00061166:
+		/* FALLTHROUGH */
+	case 0x00081166:
+		/* FALLTHROUGH */
+	case 0x02011166:
+		/* FALLTHROUGH */
+	case 0x010f1014: /* IBM re-badged ServerWorks chipset */
+		s = "ServerWorks host to PCI bridge";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);
+		break;
+
+	case 0x00091166:
+		s = "ServerWorks NB6635 3.0LE host to PCI bridge";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);
+		break;
+
+	case 0x00101166:
+		s = "ServerWorks CIOB30 host to PCI bridge";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);
+		break;
+
+	case 0x00111166:
+		/* FALLTHROUGH */
+	case 0x03021014: /* IBM re-badged ServerWorks chipset */
+		s = "ServerWorks CMIC-HE host to PCI-X bridge";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);
+		break;
+
+		/* XXX unknown chipset, but working */
+	case 0x00171166:
+		/* FALLTHROUGH */
+	case 0x01011166:
+	case 0x01101166:
+	case 0x02251166:
+		s = "ServerWorks host to PCI bridge(unknown chipset)";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);
+		break;
+
+		/* Compaq/HP -- vendor 0x0e11 */
+	case 0x60100e11:
+		s = "Compaq/HP Model 6010 HotPlug PCI Bridge";
+		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0xc8, 1);
+		break;
+
+		/* Integrated Micro Solutions -- vendor 0x10e0 */
+	case 0x884910e0:
+		s = "Integrated Micro Solutions VL Bridge";
+		break;
+
+	default:
+		if (class == PCIC_BRIDGE && subclass == PCIS_BRIDGE_HOST)
+			s = "Host to PCI bridge";
+		break;
+	}
+
+	return s;
+}
+
+/*
+ * Scan the first pci bus for host-pci bridges and add pcib instances
+ * to the nexus for each bridge.
+ */
+static void
+legacy_pcib_identify(driver_t *driver, device_t parent)
+{
+	int bus, slot, func;
+	u_int8_t  hdrtype;
+	int found = 0;
+	int pcifunchigh;
+	int found824xx = 0;
+	int found_orion = 0;
+	device_t child;
+	devclass_t pci_devclass;
+
+	if (pci_cfgregopen() == 0)
+		return;
+	/*
+	 * Check to see if we haven't already had a PCI bus added
+	 * via some other means.  If we have, bail since otherwise
+	 * we're going to end up duplicating it.
+	 */
+	if ((pci_devclass = devclass_find("pci")) &&
+		devclass_get_device(pci_devclass, 0))
+		return;
+
+
+	bus = 0;
+ retry:
+	for (slot = 0; slot <= PCI_SLOTMAX; slot++) {
+		func = 0;
+		hdrtype = legacy_pcib_read_config(0, bus, slot, func,
+						 PCIR_HDRTYPE, 1);
+		/*
+		 * When enumerating bus devices, the standard says that
+		 * one should check the header type and ignore the slots whose
+		 * header types that the software doesn't know about.  We use
+		 * this to filter out devices.
+		 */
+		if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE)
+			continue;
+		if ((hdrtype & PCIM_MFDEV) &&
+		    (!found_orion || hdrtype != 0xff))
+			pcifunchigh = PCI_FUNCMAX;
+		else
+			pcifunchigh = 0;
+		for (func = 0; func <= pcifunchigh; func++) {
+			/*
+			 * Read the IDs and class from the device.
+			 */
+			u_int32_t id;
+			u_int8_t class, subclass, busnum;
+			const char *s;
+			device_t *devs;
+			int ndevs, i;
+
+			id = legacy_pcib_read_config(0, bus, slot, func,
+						    PCIR_DEVVENDOR, 4);
+			if (id == -1)
+				continue;
+			class = legacy_pcib_read_config(0, bus, slot, func,
+						       PCIR_CLASS, 1);
+			subclass = legacy_pcib_read_config(0, bus, slot, func,
+							  PCIR_SUBCLASS, 1);
+
+			s = legacy_pcib_is_host_bridge(bus, slot, func,
+						      id, class, subclass,
+						      &busnum);
+			if (s == NULL)
+				continue;
+
+			/*
+			 * Check to see if the physical bus has already
+			 * been seen.  Eg: hybrid 32 and 64 bit host
+			 * bridges to the same logical bus.
+			 */
+			if (device_get_children(parent, &devs, &ndevs) == 0) {
+				for (i = 0; s != NULL && i < ndevs; i++) {
+					if (strcmp(device_get_name(devs[i]),
+					    "pcib") != 0)
+						continue;
+					if (legacy_get_pcibus(devs[i]) == busnum)
+						s = NULL;
+				}
+				free(devs, M_TEMP);
+			}
+
+			if (s == NULL)
+				continue;
+			/*
+			 * Add at priority 100 to make sure we
+			 * go after any motherboard resources
+			 */
+			child = BUS_ADD_CHILD(parent, 100,
+					      "pcib", busnum);
+			device_set_desc(child, s);
+			legacy_set_pcibus(child, busnum);
+
+			found = 1;
+			if (id == 0x12258086)
+				found824xx = 1;
+			if (id == 0x84c48086)
+				found_orion = 1;
+		}
+	}
+	if (found824xx && bus == 0) {
+		bus++;
+		goto retry;
+	}
+
+	/*
+	 * Make sure we add at least one bridge since some old
+	 * hardware doesn't actually have a host-pci bridge device.
+	 * Note that pci_cfgregopen() thinks we have PCI devices..
+	 */
+	if (!found) {
+		if (bootverbose)
+			printf(
+	"legacy_pcib_identify: no bridge found, adding pcib0 anyway\n");
+		child = BUS_ADD_CHILD(parent, 100, "pcib", 0);
+		legacy_set_pcibus(child, 0);
+	}
+}
+
+static int
+legacy_pcib_probe(device_t dev)
+{
+
+	if (pci_cfgregopen() == 0)
+		return ENXIO;
+	return -100;
+}
+
+static int
+legacy_pcib_attach(device_t dev)
+{
+	device_t pir;
+	int bus;
+
+	/*
+	 * Look for a PCI BIOS interrupt routing table as that will be
+	 * our method of routing interrupts if we have one.
+	 */
+	bus = pcib_get_bus(dev);
+#ifndef __rtems__
+	if (pci_pir_probe(bus, 0)) {
+		pir = BUS_ADD_CHILD(device_get_parent(dev), 0, "pir", 0);
+		if (pir != NULL)
+			device_probe_and_attach(pir);
+	}
+#else /* __rtems__ */
+#endif /* __rtems__ */
+	device_add_child(dev, "pci", bus);
+	return bus_generic_attach(dev);
+}
+
+int
+legacy_pcib_read_ivar(device_t dev, device_t child, int which,
+    uintptr_t *result)
+{
+
+	switch (which) {
+	case  PCIB_IVAR_DOMAIN:
+		*result = 0;
+		return 0;
+	case  PCIB_IVAR_BUS:
+		*result = legacy_get_pcibus(dev);
+		return 0;
+	}
+	return ENOENT;
+}
+
+int
+legacy_pcib_write_ivar(device_t dev, device_t child, int which,
+    uintptr_t value)
+{
+
+	switch (which) {
+	case  PCIB_IVAR_DOMAIN:
+		return EINVAL;
+	case  PCIB_IVAR_BUS:
+		legacy_set_pcibus(dev, value);
+		return 0;
+	}
+	return ENOENT;
+}
+
+SYSCTL_DECL(_hw_pci);
+
+static unsigned long legacy_host_mem_start = 0x80000000;
+TUNABLE_ULONG("hw.pci.host_mem_start", &legacy_host_mem_start);
+SYSCTL_ULONG(_hw_pci, OID_AUTO, host_mem_start, CTLFLAG_RDTUN,
+    &legacy_host_mem_start, 0x80000000,
+    "Limit the host bridge memory to being above this address.  Must be\n\
+set at boot via a tunable.");
+
+struct resource *
+legacy_pcib_alloc_resource(device_t dev, device_t child, int type, int *rid,
+    u_long start, u_long end, u_long count, u_int flags)
+{
+    /*
+     * If no memory preference is given, use upper 32MB slot most
+     * bioses use for their memory window.  Typically other bridges
+     * before us get in the way to assert their preferences on memory.
+     * Hardcoding like this sucks, so a more MD/MI way needs to be
+     * found to do it.  This is typically only used on older laptops
+     * that don't have pci busses behind pci bridge, so assuming > 32MB
+     * is liekly OK.
+     *
+     * However, this can cause problems for other chipsets, so we make
+     * this tunable by hw.pci.host_mem_start.
+     */
+    if (type == SYS_RES_MEMORY && start == 0UL && end == ~0UL)
+	start = legacy_host_mem_start;
+    if (type == SYS_RES_IOPORT && start == 0UL && end == ~0UL)
+	start = 0x1000;
+    return (bus_generic_alloc_resource(dev, child, type, rid, start, end,
+	count, flags));
+}
+
+static device_method_t legacy_pcib_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_identify,	legacy_pcib_identify),
+	DEVMETHOD(device_probe,		legacy_pcib_probe),
+	DEVMETHOD(device_attach,	legacy_pcib_attach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	DEVMETHOD(device_suspend,	bus_generic_suspend),
+	DEVMETHOD(device_resume,	bus_generic_resume),
+
+	/* Bus interface */
+	DEVMETHOD(bus_print_child,	bus_generic_print_child),
+	DEVMETHOD(bus_read_ivar,	legacy_pcib_read_ivar),
+	DEVMETHOD(bus_write_ivar,	legacy_pcib_write_ivar),
+	DEVMETHOD(bus_alloc_resource,	legacy_pcib_alloc_resource),
+	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
+	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
+
+	/* pcib interface */
+	DEVMETHOD(pcib_maxslots,	legacy_pcib_maxslots),
+	DEVMETHOD(pcib_read_config,	legacy_pcib_read_config),
+	DEVMETHOD(pcib_write_config,	legacy_pcib_write_config),
+	DEVMETHOD(pcib_route_interrupt,	pcibios_pcib_route_interrupt),
+	DEVMETHOD(pcib_alloc_msi,	legacy_pcib_alloc_msi),
+	DEVMETHOD(pcib_release_msi,	pcib_release_msi),
+	DEVMETHOD(pcib_alloc_msix,	legacy_pcib_alloc_msix),
+	DEVMETHOD(pcib_release_msix,	pcib_release_msix),
+	DEVMETHOD(pcib_map_msi,		legacy_pcib_map_msi),
+
+	{ 0, 0 }
+};
+
+static devclass_t hostb_devclass;
+
+DEFINE_CLASS_0(pcib, legacy_pcib_driver, legacy_pcib_methods, 1);
+DRIVER_MODULE(pcib, legacy, legacy_pcib_driver, hostb_devclass, 0, 0);
+
+
+#ifndef __rtems__
+/*
+ * Install placeholder to claim the resources owned by the
+ * PCI bus interface.  This could be used to extract the
+ * config space registers in the extreme case where the PnP
+ * ID is available and the PCI BIOS isn't, but for now we just
+ * eat the PnP ID and do nothing else.
+ *
+ * XXX we should silence this probe, as it will generally confuse
+ * people.
+ */
+static struct isa_pnp_id pcibus_pnp_ids[] = {
+	{ 0x030ad041 /* PNP0A03 */, "PCI Bus" },
+	{ 0x080ad041 /* PNP0A08 */, "PCIe Bus" },
+	{ 0 }
+};
+
+static int
+pcibus_pnp_probe(device_t dev)
+{
+	int result;
+
+	if ((result = ISA_PNP_PROBE(device_get_parent(dev), dev, pcibus_pnp_ids)) <= 0)
+		device_quiet(dev);
+	return(result);
+}
+
+static int
+pcibus_pnp_attach(device_t dev)
+{
+	return(0);
+}
+
+static device_method_t pcibus_pnp_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		pcibus_pnp_probe),
+	DEVMETHOD(device_attach,	pcibus_pnp_attach),
+	DEVMETHOD(device_detach,	bus_generic_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	DEVMETHOD(device_suspend,	bus_generic_suspend),
+	DEVMETHOD(device_resume,	bus_generic_resume),
+	{ 0, 0 }
+};
+
+static devclass_t pcibus_pnp_devclass;
+
+DEFINE_CLASS_0(pcibus_pnp, pcibus_pnp_driver, pcibus_pnp_methods, 1);
+DRIVER_MODULE(pcibus_pnp, isa, pcibus_pnp_driver, pcibus_pnp_devclass, 0, 0);
+
+
+/*
+ * Provide a PCI-PCI bridge driver for PCI busses behind PCI-PCI bridges
+ * that appear in the PCIBIOS Interrupt Routing Table to use the routing
+ * table for interrupt routing when possible.
+ */
+static int	pcibios_pcib_probe(device_t bus);
+
+static device_method_t pcibios_pcib_pci_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		pcibios_pcib_probe),
+	DEVMETHOD(device_attach,	pcib_attach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	DEVMETHOD(device_suspend,	bus_generic_suspend),
+	DEVMETHOD(device_resume,	bus_generic_resume),
+
+	/* Bus interface */
+	DEVMETHOD(bus_print_child,	bus_generic_print_child),
+	DEVMETHOD(bus_read_ivar,	pcib_read_ivar),
+	DEVMETHOD(bus_write_ivar,	pcib_write_ivar),
+	DEVMETHOD(bus_alloc_resource,	pcib_alloc_resource),
+	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
+	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
+
+	/* pcib interface */
+	DEVMETHOD(pcib_maxslots,	pcib_maxslots),
+	DEVMETHOD(pcib_read_config,	pcib_read_config),
+	DEVMETHOD(pcib_write_config,	pcib_write_config),
+	DEVMETHOD(pcib_route_interrupt,	pcibios_pcib_route_interrupt),
+	DEVMETHOD(pcib_alloc_msi,	pcib_alloc_msi),
+	DEVMETHOD(pcib_release_msi,	pcib_release_msi),
+	DEVMETHOD(pcib_alloc_msix,	pcib_alloc_msix),
+	DEVMETHOD(pcib_release_msix,	pcib_release_msix),
+	DEVMETHOD(pcib_map_msi,		pcib_map_msi),
+
+	{0, 0}
+};
+
+static devclass_t pcib_devclass;
+
+DEFINE_CLASS_0(pcib, pcibios_pcib_driver, pcibios_pcib_pci_methods,
+    sizeof(struct pcib_softc));
+DRIVER_MODULE(pcibios_pcib, pci, pcibios_pcib_driver, pcib_devclass, 0, 0);
+
+static int
+pcibios_pcib_probe(device_t dev)
+{
+	int bus;
+
+	if ((pci_get_class(dev) != PCIC_BRIDGE) ||
+	    (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
+		return (ENXIO);
+	bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
+	if (bus == 0)
+		return (ENXIO);
+	if (!pci_pir_probe(bus, 1))
+		return (ENXIO);
+	device_set_desc(dev, "PCIBIOS PCI-PCI bridge");
+	return (-2000);
+}
+
+static int
+pcibios_pcib_route_interrupt(device_t pcib, device_t dev, int pin)
+{
+	return (pci_pir_route_interrupt(pci_get_bus(dev), pci_get_slot(dev),
+		pci_get_function(dev), pin));
+}
+#endif /* __rtems__ */