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06db52b609
into _bus.h to help with name space polution from including all of bus.h. In a few days, I'll commit changes to the MI code to take advantage of thse sepration (after I've made sure that these changes don't break anything in the main tree, I've tested in my trees, but you never know...). Suggested by: bde (in 2002 or 2003 I think) Reviewed in principle by: jhb
735 lines
20 KiB
C
735 lines
20 KiB
C
/*-
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* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: bus.h,v 1.9.4.1 2000/06/30 16:27:30 simonb Exp $
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* $FreeBSD$
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*/
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#ifndef _MACPPC_BUS_H_
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#define _MACPPC_BUS_H_
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#include <machine/_bus.h>
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#include <machine/pio.h>
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#define BUS_SPACE_MAXSIZE_24BIT 0xFFFFFF
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#define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
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#define BUS_SPACE_MAXSIZE 0xFFFFFFFF
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#define BUS_SPACE_MAXADDR_24BIT 0xFFFFFF
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#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
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#define BUS_SPACE_MAXADDR 0xFFFFFFFF
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#define BUS_SPACE_UNRESTRICTED (~0)
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/*
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* Values for the macppc bus space tag, not to be used directly by MI code.
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*/
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#define __BUS_SPACE_HAS_STREAM_METHODS 1
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/*
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* Define the PPC tag values
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*/
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#define PPC_BUS_SPACE_MEM 1 /* space is mem space */
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#define PPC_BUS_SPACE_IO 2 /* space is io space */
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static __inline void *
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__ppc_ba(bus_space_tag_t tag __unused, bus_space_handle_t handle,
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bus_size_t offset)
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{
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return ((void *)(handle + offset));
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}
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/*
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* int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
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* bus_size_t size, int flags, bus_space_handle_t *bshp));
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*
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* Map a region of bus space.
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*/
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#if 0
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bus_space_map(t, addr, size, flags, bshp) ! not implemented !
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#endif
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/*
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* int bus_space_unmap(bus_space_tag_t t,
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* bus_space_handle_t bsh, bus_size_t size));
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*
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* Unmap a region of bus space.
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*/
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static __inline void
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bus_space_unmap(bus_space_tag_t t __unused, bus_space_handle_t bsh __unused,
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bus_size_t size __unused)
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{
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}
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/*
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* int bus_space_subregion(bus_space_tag_t t,
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* bus_space_handle_t bsh, bus_size_t offset, bus_size_t size,
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* bus_space_handle_t *nbshp));
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*
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* Get a new handle for a subregion of an already-mapped area of bus space.
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*/
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static __inline int
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bus_space_subregion(bus_space_tag_t t __unused, bus_space_handle_t bsh,
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bus_size_t offset, bus_size_t size __unused, bus_space_handle_t *nbshp)
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{
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*nbshp = bsh + offset;
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return (0);
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}
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/*
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* int bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart,
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* bus_addr_t rend, bus_size_t size, bus_size_t align,
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* bus_size_t boundary, int flags, bus_addr_t *addrp,
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* bus_space_handle_t *bshp));
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*
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* Allocate a region of bus space.
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*/
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#if 0
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#define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) !!! unimplemented !!!
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#endif
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/*
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* int bus_space_free(bus_space_tag_t t,
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* bus_space_handle_t bsh, bus_size_t size));
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*
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* Free a region of bus space.
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*/
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#if 0
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#define bus_space_free(t, h, s) !!! unimplemented !!!
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#endif
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/*
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* u_intN_t bus_space_read_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset));
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*
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* Read a 1, 2, 4, or 8 byte quantity from bus space
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* described by tag/handle/offset.
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*/
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static __inline u_int8_t
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bus_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
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{
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return (in8(__ppc_ba(t, h, o)));
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}
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static __inline u_int16_t
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bus_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
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{
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return (in16rb(__ppc_ba(t, h, o)));
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}
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static __inline u_int32_t
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bus_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
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{
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return (in32rb(__ppc_ba(t, h, o)));
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}
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#if 0 /* Cause a link error for bus_space_read_8 */
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#define bus_space_read_8(t, h, o) !!! unimplemented !!!
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#endif
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static __inline u_int8_t
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bus_space_read_stream_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
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{
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return (in8(__ppc_ba(t, h, o)));
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}
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static __inline u_int16_t
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bus_space_read_stream_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
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{
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return (in16(__ppc_ba(t, h, o)));
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}
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static __inline u_int32_t
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bus_space_read_stream_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
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{
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return (in32(__ppc_ba(t, h, o)));
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}
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#if 0 /* Cause a link error for bus_space_read_stream_8 */
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#define bus_space_read_stream_8(t, h, o) !!! unimplemented !!!
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#endif
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/*
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* void bus_space_read_multi_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* u_intN_t *addr, size_t count));
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*
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* Read `count' 1, 2, 4, or 8 byte quantities from bus space
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* described by tag/handle/offset and copy into buffer provided.
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*/
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static __inline void
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bus_space_read_multi_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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u_int8_t *a, size_t c)
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{
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ins8(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_read_multi_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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u_int16_t *a, size_t c)
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{
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ins16rb(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_read_multi_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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u_int32_t *a, size_t c)
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{
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ins32rb(__ppc_ba(t, h, o), a, c);
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}
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#if 0 /* Cause a link error for bus_space_read_multi_8 */
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#define bus_space_read_multi_8 !!! unimplemented !!!
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#endif
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static __inline void
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bus_space_read_multi_stream_1(bus_space_tag_t t, bus_space_handle_t h,
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bus_size_t o, u_int8_t *a, size_t c)
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{
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ins8(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_read_multi_stream_2(bus_space_tag_t t, bus_space_handle_t h,
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bus_size_t o, u_int16_t *a, size_t c)
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{
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ins16(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_read_multi_stream_4(bus_space_tag_t t, bus_space_handle_t h,
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bus_size_t o, u_int32_t *a, size_t c)
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{
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ins32(__ppc_ba(t, h, o), a, c);
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}
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#if 0 /* Cause a link error for bus_space_read_multi_stream_8 */
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#define bus_space_read_multi_stream_8 !!! unimplemented !!!
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#endif
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/*
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* void bus_space_read_region_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* u_intN_t *addr, size_t count));
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*
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* Read `count' 1, 2, 4, or 8 byte quantities from bus space
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* described by tag/handle and starting at `offset' and copy into
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* buffer provided.
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*/
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static __inline void
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bus_space_read_region_1(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int8_t *addr, size_t count)
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{
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volatile u_int8_t *s = __ppc_ba(tag, bsh, offset);
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while (count--)
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*addr++ = *s++;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_read_region_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int16_t *addr, size_t count)
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{
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volatile u_int16_t *s = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("lhbrx %0, 0, %1" :
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"=r"(*addr++) : "r"(s++));
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int32_t *addr, size_t count)
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{
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volatile u_int32_t *s = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("lwbrx %0, 0, %1" :
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"=r"(*addr++) : "r"(s++));
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__asm __volatile("eieio; sync");
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}
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#if 0 /* Cause a link error for bus_space_read_region_8 */
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#define bus_space_read_region_8 !!! unimplemented !!!
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#endif
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static __inline void
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bus_space_read_region_stream_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int16_t *addr, size_t count)
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{
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volatile u_int16_t *s = __ppc_ba(tag, bsh, offset);
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while (count--)
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*addr++ = *s++;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_read_region_stream_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int32_t *addr, size_t count)
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{
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volatile u_int32_t *s = __ppc_ba(tag, bsh, offset);
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while (count--)
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*addr++ = *s++;
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__asm __volatile("eieio; sync");
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}
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#if 0 /* Cause a link error */
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#define bus_space_read_region_stream_8 !!! unimplemented !!!
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#endif
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/*
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* void bus_space_write_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* u_intN_t value));
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*
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* Write the 1, 2, 4, or 8 byte value `value' to bus space
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* described by tag/handle/offset.
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*/
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static __inline void
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bus_space_write_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint8_t v)
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{
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out8(__ppc_ba(t, h, o), v);
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}
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static __inline void
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bus_space_write_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint16_t v)
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{
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out16rb(__ppc_ba(t, h, o), v);
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}
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static __inline void
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bus_space_write_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint32_t v)
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{
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out32rb(__ppc_ba(t, h, o), v);
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}
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#if 0 /* Cause a link error for bus_space_write_8 */
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#define bus_space_write_8 !!! unimplemented !!!
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#endif
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static __inline void
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bus_space_write_stream_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint8_t v)
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{
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out8(__ppc_ba(t, h, o), v);
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}
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static __inline void
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bus_space_write_stream_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint16_t v)
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{
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out16(__ppc_ba(t, h, o), v);
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}
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static __inline void
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bus_space_write_stream_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint32_t v)
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{
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out32(__ppc_ba(t, h, o), v);
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}
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#if 0 /* Cause a link error for bus_space_write_stream_8 */
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#define bus_space_write_stream_8 !!! unimplemented !!!
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#endif
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/*
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* void bus_space_write_multi_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* const u_intN_t *addr, size_t count));
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*
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* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
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* provided to bus space described by tag/handle/offset.
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*/
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static __inline void
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bus_space_write_multi_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint8_t *a, size_t c)
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{
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outsb(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_write_multi_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint16_t *a, size_t c)
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{
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outsw(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_write_multi_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
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uint32_t *a, size_t c)
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{
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outsl(__ppc_ba(t, h, o), a, c);
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}
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#if 0
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#define bus_space_write_multi_8 !!! unimplemented !!!
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#endif
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static __inline void
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bus_space_write_multi_stream_1(bus_space_tag_t t, bus_space_handle_t h,
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bus_size_t o, const u_int8_t *a, size_t c)
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{
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outsb(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_write_multi_stream_2(bus_space_tag_t t, bus_space_handle_t h,
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bus_size_t o, const u_int16_t *a, size_t c)
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{
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outsw(__ppc_ba(t, h, o), a, c);
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}
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static __inline void
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bus_space_write_multi_stream_4(bus_space_tag_t t, bus_space_handle_t h,
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bus_size_t o, const u_int32_t *a, size_t c)
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{
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outsl(__ppc_ba(t, h, o), a, c);
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}
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#if 0
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#define bus_space_write_multi_stream_8 !!! unimplemented !!!
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#endif
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/*
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* void bus_space_write_region_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* const u_intN_t *addr, size_t count));
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*
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* Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
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* to bus space described by tag/handle starting at `offset'.
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*/
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static __inline void
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bus_space_write_region_1(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, const u_int8_t *addr, size_t count)
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{
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volatile u_int8_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d++ = *addr++;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_write_region_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, const u_int16_t *addr, size_t count)
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{
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volatile u_int16_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("sthbrx %0, 0, %1" ::
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"r"(*addr++), "r"(d++));
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, const u_int32_t *addr, size_t count)
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{
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volatile u_int32_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("stwbrx %0, 0, %1" ::
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"r"(*addr++), "r"(d++));
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__asm __volatile("eieio; sync");
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}
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#if 0
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#define bus_space_write_region_8 !!! bus_space_write_region_8 unimplemented !!!
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#endif
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static __inline void
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bus_space_write_region_stream_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, const u_int16_t *addr, size_t count)
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{
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volatile u_int16_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d++ = *addr++;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_write_region_stream_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, const u_int32_t *addr, size_t count)
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{
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volatile u_int32_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d++ = *addr++;
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__asm __volatile("eieio; sync");
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}
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#if 0
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#define bus_space_write_region_stream_8 !!! unimplemented !!!
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#endif
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/*
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* void bus_space_set_multi_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
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* size_t count));
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*
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* Write the 1, 2, 4, or 8 byte value `val' to bus space described
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* by tag/handle/offset `count' times.
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*/
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static __inline void
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bus_space_set_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int8_t val, size_t count)
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{
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volatile u_int8_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d = val;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_set_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int16_t val, size_t count)
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{
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volatile u_int16_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("sthbrx %0, 0, %1" ::
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"r"(val), "r"(d));
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int32_t val, size_t count)
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{
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volatile u_int32_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("stwbrx %0, 0, %1" ::
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"r"(val), "r"(d));
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__asm __volatile("eieio; sync");
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}
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#if 0
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#define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!!
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#endif
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static __inline void
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bus_space_set_multi_stream_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int16_t val, size_t count)
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{
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volatile u_int16_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d = val;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_set_multi_stream_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int32_t val, size_t count)
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{
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volatile u_int32_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d = val;
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__asm __volatile("eieio; sync");
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}
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#if 0
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#define bus_space_set_multi_stream_8 !!! unimplemented !!!
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#endif
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/*
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* void bus_space_set_region_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
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* size_t count));
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*
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* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
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* by tag/handle starting at `offset'.
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*/
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static __inline void
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bus_space_set_region_1(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int8_t val, size_t count)
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{
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volatile u_int8_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d++ = val;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_set_region_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int16_t val, size_t count)
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{
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volatile u_int16_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("sthbrx %0, 0, %1" ::
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"r"(val), "r"(d++));
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int32_t val, size_t count)
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{
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volatile u_int32_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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__asm __volatile("stwbrx %0, 0, %1" ::
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"r"(val), "r"(d++));
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__asm __volatile("eieio; sync");
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}
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#if 0
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#define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!!
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#endif
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static __inline void
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bus_space_set_region_stream_2(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int16_t val, size_t count)
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{
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volatile u_int16_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d++ = val;
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__asm __volatile("eieio; sync");
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}
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static __inline void
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bus_space_set_region_stream_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t offset, u_int32_t val, size_t count)
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{
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volatile u_int32_t *d = __ppc_ba(tag, bsh, offset);
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while (count--)
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*d++ = val;
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__asm __volatile("eieio; sync");
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}
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#if 0
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#define bus_space_set_region_stream_8 !!! unimplemented !!!
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#endif
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/*
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* void bus_space_copy_region_N(bus_space_tag_t tag,
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* bus_space_handle_t bsh1, bus_size_t off1,
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* bus_space_handle_t bsh2, bus_size_t off2,
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* size_t count));
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*
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* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
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* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
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*/
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/* XXX IMPLEMENT bus_space_copy_N() XXX */
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/*
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* Bus read/write barrier methods.
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*
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* void bus_space_barrier(bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* bus_size_t len, int flags));
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*
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* Note: the macppc does not currently require barriers, but we must
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* provide the flags to MI code.
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*/
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#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
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#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
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static __inline void
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bus_space_barrier(bus_space_tag_t tag __unused,
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bus_space_handle_t bsh __unused, bus_size_t offset __unused,
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bus_size_t len __unused, int flags __unused)
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{
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__asm __volatile("" : : : "memory");
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}
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#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
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#include <machine/bus_dma.h>
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#endif /* _MACPPC_BUS_H_ */
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