Initial import

Code is based on FreeBSD 8.2 with USB support from Sebastian Huber
and Thomas Doerfler. Initial TCP/IP stack work is from Kevel Kirspel.

1 files changed, 781 insertions, 0 deletions

diff --git a/rtems/freebsd/machine/bus.h b/rtems/freebsd/machine/bus.h
new file mode 100644
index 00000000..3e01ce4a
--- /dev/null
+++ b/rtems/freebsd/machine/bus.h
@@ -0,0 +1,781 @@
+/**
+ * @file
+ *
+ * @ingroup rtems_bsd_machine
+ *
+ * @brief TODO.
+ *
+ * File origin from FreeBSD 'sys/amd64/include/bus.h'.
+ */
+
+/*-
+ * Copyright (c) 2009, 2010 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * Copyright (c) KATO Takenori, 1999.
+ *
+ * All rights reserved.  Unpublished rights reserved under the copyright
+ * laws of Japan.
+ *
+ * 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 as
+ *    the first lines of this file unmodified.
+ * 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.
+ */
+
+/*-
+ * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * 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 NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 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.
+ */
+
+/*-
+ * Copyright (c) 1996 Charles M. Hannum.  All rights reserved.
+ * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Christopher G. Demetriou
+ *	for the NetBSD Project.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RTEMS_BSD_MACHINE_BUS_H_
+#define _RTEMS_BSD_MACHINE_BUS_H_
+
+#ifndef _RTEMS_BSD_MACHINE_RTEMS_BSD_CONFIG_H_
+#error "the header file <rtems/freebsd/machine/rtems-bsd-config.h> must be included first"
+#endif
+
+/*
+ * Bus address alignment.
+ */
+#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
+
+/*
+ * Bus address maxima.
+ */
+#define BUS_SPACE_MAXADDR_24BIT	0xffffffU
+#define BUS_SPACE_MAXADDR_32BIT 0xffffffffU
+#define BUS_SPACE_MAXADDR 	0xffffffffU
+#define BUS_SPACE_MAXSIZE_24BIT	0xffffffU
+#define BUS_SPACE_MAXSIZE_32BIT	0xffffffffU
+#define BUS_SPACE_MAXSIZE 	0xffffffffU
+
+/*
+ * Bus access.
+ */
+#define BUS_SPACE_UNRESTRICTED	(~0U)
+
+/*
+ * Bus read/write barrier method.
+ */
+#define	BUS_SPACE_BARRIER_READ	0x01		/* force read barrier */
+#define	BUS_SPACE_BARRIER_WRITE	0x02		/* force write barrier */
+
+/*
+ * Bus address and size types
+ */
+typedef unsigned int bus_addr_t;
+typedef unsigned int bus_size_t;
+
+/*
+ * Access methods for bus resources and address space.
+ */
+typedef	int bus_space_tag_t;
+typedef	unsigned int bus_space_handle_t;
+
+/*
+ * Map a region of device bus space into CPU virtual address space.
+ */
+
+static __inline int
+bus_space_map(bus_space_tag_t t __unused, bus_addr_t addr,
+	      bus_size_t size __unused, int flags __unused,
+	      bus_space_handle_t *bshp)
+{
+	*bshp = addr;
+	return (0);
+}
+
+/*
+ * Unmap a region of device bus space.
+ */
+static __inline void
+bus_space_unmap(bus_space_tag_t bst __unused, bus_space_handle_t bsh __unused,
+    bus_size_t size __unused)
+{
+	/* Do nothing */
+}
+
+
+/*
+ * Get a new handle for a subregion of an already-mapped area of bus space.
+ */
+static __inline int
+bus_space_subregion(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, bus_size_t size, bus_space_handle_t *nbshp)
+{
+	*nbshp = bsh + ofs;
+	return (0);
+}
+
+
+/*
+ * Allocate a region of memory that is accessible to devices in bus space.
+ */
+int
+bus_space_alloc(bus_space_tag_t bst __unused, bus_addr_t rstart, bus_addr_t rend,
+    bus_size_t size, bus_size_t align, bus_size_t boundary, int flags,
+    bus_addr_t *addrp, bus_space_handle_t *bshp);
+
+
+/*
+ * Free a region of bus space accessible memory.
+ */
+void
+bus_space_free(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t size);
+
+
+static __inline void
+bus_space_barrier(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs,
+    bus_size_t size, int flags)
+{
+	/* Do nothing */
+}
+
+
+/*
+ * Read 1 unit of data from bus space described by the tag, handle and ofs
+ * tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is returned.
+ */
+static __inline uint8_t
+bus_space_read_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs)
+{
+	uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+	return (*bsp);
+}
+
+static __inline uint16_t
+bus_space_read_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs)
+{
+	uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+	return (*bsp);
+}
+
+static __inline uint32_t
+bus_space_read_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs)
+{
+	uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+	return (*bsp);
+}
+
+static __inline uint64_t
+bus_space_read_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs)
+{
+	uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+	return (*bsp);
+}
+
+
+/*
+ * Write 1 unit of data to bus space described by the tag, handle and ofs
+ * tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is passed by value.
+ */
+static __inline void
+bus_space_write_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs,
+    uint8_t val)
+{
+	uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+	*bsp = val;
+}
+
+static __inline void
+bus_space_write_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs,
+    uint16_t val)
+{
+	uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+	*bsp = val;
+}
+
+static __inline void
+bus_space_write_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs,
+    uint32_t val)
+{
+	uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+	*bsp = val;
+}
+
+static __inline void
+bus_space_write_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs,
+    uint64_t val)
+{
+	uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+	*bsp = val;
+}
+
+
+/*
+ * Read count units of data from bus space described by the tag, handle and
+ * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is returned in the buffer passed by reference.
+ */
+static __inline void
+bus_space_read_multi_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint8_t *bufp, bus_size_t count)
+{
+	uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bufp++ = *bsp;
+	}
+}
+
+static __inline void
+bus_space_read_multi_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint16_t *bufp, bus_size_t count)
+{
+	uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bufp++ = *bsp;
+	}
+}
+
+static __inline void
+bus_space_read_multi_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint32_t *bufp, bus_size_t count)
+{
+	uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bufp++ = *bsp;
+	}
+}
+
+static __inline void
+bus_space_read_multi_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint64_t *bufp, bus_size_t count)
+{
+	uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bufp++ = *bsp;
+	}
+}
+
+
+/*
+ * Write count units of data to bus space described by the tag, handle and
+ * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is read from the buffer passed by reference.
+ */
+static __inline void
+bus_space_write_multi_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint8_t *bufp, bus_size_t count)
+{
+	uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = *bufp++;
+	}
+}
+
+static __inline void
+bus_space_write_multi_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint16_t *bufp, bus_size_t count)
+{
+	uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = *bufp++;
+	}
+}
+
+static __inline void
+bus_space_write_multi_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint32_t *bufp, bus_size_t count)
+{
+	uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = *bufp++;
+	}
+}
+
+static __inline void
+bus_space_write_multi_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint64_t *bufp, bus_size_t count)
+{
+	uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = *bufp++;
+	}
+}
+
+
+/*
+ * Read count units of data from bus space described by the tag, handle and
+ * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is written to the buffer passed by reference and read from successive
+ * bus space addresses. Access is unordered.
+ */
+static __inline void
+bus_space_read_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint8_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+		*bufp++ = *bsp;
+		ofs += 1;
+	}
+}
+
+static __inline void
+bus_space_read_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint16_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+		*bufp++ = *bsp;
+		ofs += 2;
+	}
+}
+
+static __inline void
+bus_space_read_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint32_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+		*bufp++ = *bsp;
+		ofs += 4;
+	}
+}
+
+static __inline void
+bus_space_read_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint64_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+		*bufp++ = *bsp;
+		ofs += 8;
+	}
+}
+
+
+/*
+ * Write count units of data from bus space described by the tag, handle and
+ * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is read from the buffer passed by reference and written to successive
+ * bus space addresses. Access is unordered.
+ */
+static __inline void
+bus_space_write_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint8_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+		*bsp = *bufp++;
+		ofs += 1;
+	}
+}
+
+static __inline void
+bus_space_write_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint16_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+		*bsp = *bufp++;
+		ofs += 2;
+	}
+}
+
+static __inline void
+bus_space_write_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint32_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+		*bsp = *bufp++;
+		ofs += 4;
+	}
+}
+
+static __inline void
+bus_space_write_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, const uint64_t *bufp, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+		*bsp = *bufp++;
+		ofs += 8;
+	}
+}
+
+
+/*
+ * Write count units of data from bus space described by the tag, handle and
+ * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is passed by value. Writes are unordered.
+ */
+static __inline void
+bus_space_set_multi_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint8_t val, bus_size_t count)
+{
+	uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = val;
+	}
+}
+
+static __inline void
+bus_space_set_multi_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint16_t val, bus_size_t count)
+{
+	uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = val;
+	}
+}
+
+static __inline void
+bus_space_set_multi_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint32_t val, bus_size_t count)
+{
+	uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = val;
+	}
+}
+
+static __inline void
+bus_space_set_multi_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint64_t val, bus_size_t count)
+{
+	uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+	while (count-- > 0) {
+		*bsp = val;
+	}
+}
+
+
+/*
+ * Write count units of data from bus space described by the tag, handle and
+ * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The
+ * data is passed by value and written to successive bus space addresses.
+ * Writes are unordered.
+ */
+static __inline void
+bus_space_set_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint8_t val, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs);
+		*bsp = val;
+		ofs += 1;
+	}
+}
+
+static __inline void
+bus_space_set_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint16_t val, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs);
+		*bsp = val;
+		ofs += 2;
+	}
+}
+
+static __inline void
+bus_space_set_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint32_t val, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs);
+		*bsp = val;
+		ofs += 4;
+	}
+}
+
+static __inline void
+bus_space_set_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh,
+    bus_size_t ofs, uint64_t val, bus_size_t count)
+{
+	while (count-- > 0) {
+		uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs);
+		*bsp = val;
+		ofs += 8;
+	}
+}
+
+
+/*
+ * Copy count units of data from bus space described by the tag and the first
+ * handle and ofs pair to bus space described by the tag and the second handle
+ * and ofs pair. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes.
+ * The data is read from successive bus space addresses and also written to
+ * successive bus space addresses. Both reads and writes are unordered.
+ */
+static __inline void
+bus_space_copy_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh1,
+    bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count)
+{
+	bus_addr_t dst = bsh1 + ofs1;
+	bus_addr_t src = bsh2 + ofs2;
+	uint8_t __volatile *dstp = (uint8_t __volatile *) dst;
+	uint8_t __volatile *srcp = (uint8_t __volatile *) src;
+	if (dst > src) {
+		src += count - 1;
+		dst += count - 1;
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src -= 1;
+			dst -= 1;
+		}
+	} else {
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src += 1;
+			dst += 1;
+		}
+	}
+}
+
+static __inline void
+bus_space_copy_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh1,
+    bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count)
+{
+	bus_addr_t dst = bsh1 + ofs1;
+	bus_addr_t src = bsh2 + ofs2;
+	uint16_t __volatile *dstp = (uint16_t __volatile *) dst;
+	uint16_t __volatile *srcp = (uint16_t __volatile *) src;
+	if (dst > src) {
+		src += (count - 1) << 1;
+		dst += (count - 1) << 1;
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src -= 2;
+			dst -= 2;
+		}
+	} else {
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src += 2;
+			dst += 2;
+		}
+	}
+}
+
+static __inline void
+bus_space_copy_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh1,
+    bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count)
+{
+	bus_addr_t dst = bsh1 + ofs1;
+	bus_addr_t src = bsh2 + ofs2;
+	uint32_t __volatile *dstp = (uint32_t __volatile *) dst;
+	uint32_t __volatile *srcp = (uint32_t __volatile *) src;
+	if (dst > src) {
+		src += (count - 1) << 2;
+		dst += (count - 1) << 2;
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src -= 4;
+			dst -= 4;
+		}
+	} else {
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src += 4;
+			dst += 4;
+		}
+	}
+}
+
+static __inline void
+bus_space_copy_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh1,
+    bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count)
+{
+	bus_addr_t dst = bsh1 + ofs1;
+	bus_addr_t src = bsh2 + ofs2;
+	uint64_t __volatile *dstp = (uint64_t __volatile *) dst;
+	uint64_t __volatile *srcp = (uint64_t __volatile *) src;
+	if (dst > src) {
+		src += (count - 1) << 3;
+		dst += (count - 1) << 3;
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src -= 8;
+			dst -= 8;
+		}
+	} else {
+		while (count-- > 0) {
+			*dstp = *srcp;
+			src += 8;
+			dst += 8;
+		}
+	}
+}
+
+
+/*
+ * Stream accesses are the same as normal accesses on RTEMS; there are no
+ * supported bus systems with an endianess different from the host one.
+ */
+#define	bus_space_read_stream_1(t, h, o)	\
+	bus_space_read_1(t, h, o)
+#define	bus_space_read_stream_2(t, h, o)	\
+	bus_space_read_2(t, h, o)
+#define	bus_space_read_stream_4(t, h, o)	\
+	bus_space_read_4(t, h, o)
+#define	bus_space_read_stream_8(t, h, o)	\
+	bus_space_read_8(t, h, o)
+
+#define	bus_space_read_multi_stream_1(t, h, o, a, c)	\
+	bus_space_read_multi_1(t, h, o, a, c)
+#define	bus_space_read_multi_stream_2(t, h, o, a, c)	\
+	bus_space_read_multi_2(t, h, o, a, c)
+#define	bus_space_read_multi_stream_4(t, h, o, a, c)	\
+	bus_space_read_multi_4(t, h, o, a, c)
+#define	bus_space_read_multi_stream_8(t, h, o, a, c)	\
+	bus_space_read_multi_8(t, h, o, a, c)
+
+#define	bus_space_write_stream_1(t, h, o, v)	\
+	bus_space_write_1(t, h, o, v)
+#define	bus_space_write_stream_2(t, h, o, v)	\
+	bus_space_write_2(t, h, o, v)
+#define	bus_space_write_stream_4(t, h, o, v)	\
+	bus_space_write_4(t, h, o, v)
+#define	bus_space_write_stream_8(t, h, o, v)	\
+	bus_space_write_8(t, h, o, v)
+
+#define	bus_space_write_multi_stream_1(t, h, o, a, c)	\
+	bus_space_write_multi_1(t, h, o, a, c)
+#define	bus_space_write_multi_stream_2(t, h, o, a, c)	\
+	bus_space_write_multi_2(t, h, o, a, c)
+#define	bus_space_write_multi_stream_4(t, h, o, a, c)	\
+	bus_space_write_multi_4(t, h, o, a, c)
+#define	bus_space_write_multi_stream_8(t, h, o, a, c)	\
+	bus_space_write_multi_8(t, h, o, a, c)
+
+#define	bus_space_set_multi_stream_1(t, h, o, v, c)	\
+	bus_space_set_multi_1(t, h, o, v, c)
+#define	bus_space_set_multi_stream_2(t, h, o, v, c)	\
+	bus_space_set_multi_2(t, h, o, v, c)
+#define	bus_space_set_multi_stream_4(t, h, o, v, c)	\
+	bus_space_set_multi_4(t, h, o, v, c)
+#define	bus_space_set_multi_stream_8(t, h, o, v, c)	\
+	bus_space_set_multi_8(t, h, o, v, c)
+
+#define	bus_space_read_region_stream_1(t, h, o, a, c)	\
+	bus_space_read_region_1(t, h, o, a, c)
+#define	bus_space_read_region_stream_2(t, h, o, a, c)	\
+	bus_space_read_region_2(t, h, o, a, c)
+#define	bus_space_read_region_stream_4(t, h, o, a, c)	\
+	bus_space_read_region_4(t, h, o, a, c)
+#define	bus_space_read_region_stream_8(t, h, o, a, c)	\
+	bus_space_read_region_8(t, h, o, a, c)
+
+#define	bus_space_write_region_stream_1(t, h, o, a, c)	\
+	bus_space_write_region_1(t, h, o, a, c)
+#define	bus_space_write_region_stream_2(t, h, o, a, c)	\
+	bus_space_write_region_2(t, h, o, a, c)
+#define	bus_space_write_region_stream_4(t, h, o, a, c)	\
+	bus_space_write_region_4(t, h, o, a, c)
+#define	bus_space_write_region_stream_8(t, h, o, a, c)	\
+	bus_space_write_region_8(t, h, o, a, c)
+
+#define	bus_space_set_region_stream_1(t, h, o, v, c)	\
+	bus_space_set_region_1(t, h, o, v, c)
+#define	bus_space_set_region_stream_2(t, h, o, v, c)	\
+	bus_space_set_region_2(t, h, o, v, c)
+#define	bus_space_set_region_stream_4(t, h, o, v, c)	\
+	bus_space_set_region_4(t, h, o, v, c)
+#define	bus_space_set_region_stream_8(t, h, o, v, c)	\
+	bus_space_set_region_8(t, h, o, v, c)
+
+#define	bus_space_copy_region_stream_1(t, h1, o1, h2, o2, c)	\
+	bus_space_copy_region_1(t, h1, o1, h2, o2, c)
+#define	bus_space_copy_region_stream_2(t, h1, o1, h2, o2, c)	\
+	bus_space_copy_region_2(t, h1, o1, h2, o2, c)
+#define	bus_space_copy_region_stream_4(t, h1, o1, h2, o2, c)	\
+	bus_space_copy_region_4(t, h1, o1, h2, o2, c)
+#define	bus_space_copy_region_stream_8(t, h1, o1, h2, o2, c)	\
+	bus_space_copy_region_8(t, h1, o1, h2, o2, c)
+
+#include <rtems/freebsd/machine/bus_dma.h>
+
+#endif /* _RTEMS_BSD_MACHINE_BUS_H_ */