5974e5c71c
sys/bus_dma.h instead of being copied in every single arch. This slightly reorders a flag that was specific to AXP and thus changes the ABI there. The interface still relies on bus_space definitions found in <machine/bus.h> so it cannot be included on its own yet, but that will be fixed at a later date. Add an MD <machine/bus_dma.h> for ever arch for consistency and to allow for future MD augmentation of the API. sparc64 makes heavy use of this right now due to its different bus_dma implemenation.
487 lines
19 KiB
C
487 lines
19 KiB
C
/* $NetBSD: bus.h,v 1.12 1997/10/01 08:25:15 fvdl Exp $ */
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/*-
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* Copyright (c) 1996, 1997 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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/* $FreeBSD$ */
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#ifndef _ALPHA_BUS_H_
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#define _ALPHA_BUS_H_
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/*
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* Bus address and size types
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*/
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typedef u_int64_t bus_addr_t;
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typedef u_int64_t bus_size_t;
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typedef struct alpha_busspace *bus_space_tag_t;
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typedef u_int32_t bus_space_handle_t;
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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 0xFFFFFFFFFFFFFFFF
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#define BUS_SPACE_MAXADDR_24BIT 0xFFFFFF
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#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
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/* The largest address space known so far is 40 bits */
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#define BUS_SPACE_MAXADDR 0xFFFFFFFFFUL
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#define BUS_SPACE_UNRESTRICTED (~0)
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/*
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* Map a region of device bus space into CPU virtual address space.
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*/
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static __inline int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
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bus_size_t size, int flags,
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bus_space_handle_t *bshp);
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static __inline int
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bus_space_map(bus_space_tag_t t __unused, bus_addr_t addr,
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bus_size_t size __unused, int flags __unused,
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bus_space_handle_t *bshp)
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{
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*bshp = addr;
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return (0);
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}
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/*
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* Unmap a region of device bus space.
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*/
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static __inline void bus_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh,
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bus_size_t size);
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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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* 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 bus_space_subregion(bus_space_tag_t t,
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bus_space_handle_t bsh,
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bus_size_t offset, bus_size_t size,
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bus_space_handle_t *nbshp);
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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,
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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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struct alpha_busspace;
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struct alpha_busspace_ops {
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u_int8_t (*abo_read_1)(struct alpha_busspace *space, size_t offset);
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u_int16_t (*abo_read_2)(struct alpha_busspace *space, size_t offset);
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u_int32_t (*abo_read_4)(struct alpha_busspace *space, size_t offset);
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void (*abo_read_multi_1)(struct alpha_busspace *space,
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size_t offset,
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u_int8_t *addr, size_t count);
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void (*abo_read_multi_2)(struct alpha_busspace *space,
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size_t offset,
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u_int16_t *addr, size_t count);
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void (*abo_read_multi_4)(struct alpha_busspace *space,
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size_t offset,
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u_int32_t *addr, size_t count);
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void (*abo_read_region_1)(struct alpha_busspace *space,
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size_t offset,
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u_int8_t *addr, size_t count);
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void (*abo_read_region_2)(struct alpha_busspace *space,
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size_t offset,
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u_int16_t *addr, size_t count);
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void (*abo_read_region_4)(struct alpha_busspace *space,
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size_t offset,
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u_int32_t *addr, size_t count);
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void (*abo_write_1)(struct alpha_busspace *space, size_t offset,
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u_int8_t value);
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void (*abo_write_2)(struct alpha_busspace *space, size_t offset,
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u_int16_t value);
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void (*abo_write_4)(struct alpha_busspace *space, size_t offset,
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u_int32_t value);
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void (*abo_write_multi_1)(struct alpha_busspace *space,
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size_t offset,
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const u_int8_t *addr, size_t count);
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void (*abo_write_multi_2)(struct alpha_busspace *space,
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size_t offset,
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const u_int16_t *addr, size_t count);
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void (*abo_write_multi_4)(struct alpha_busspace *space,
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size_t offset,
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const u_int32_t *addr, size_t count);
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void (*abo_write_region_1)(struct alpha_busspace *space,
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size_t offset,
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const u_int8_t *addr, size_t count);
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void (*abo_write_region_2)(struct alpha_busspace *space,
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size_t offset,
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const u_int16_t *addr, size_t count);
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void (*abo_write_region_4)(struct alpha_busspace *space,
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size_t offset,
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const u_int32_t *addr, size_t count);
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void (*abo_set_multi_1)(struct alpha_busspace *space, size_t offset,
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u_int8_t value, size_t count);
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void (*abo_set_multi_2)(struct alpha_busspace *space, size_t offset,
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u_int16_t value, size_t count);
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void (*abo_set_multi_4)(struct alpha_busspace *space, size_t offset,
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u_int32_t value, size_t count);
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void (*abo_set_region_1)(struct alpha_busspace *space,
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size_t offset,
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u_int8_t value, size_t count);
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void (*abo_set_region_2)(struct alpha_busspace *space,
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size_t offset,
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u_int16_t value, size_t count);
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void (*abo_set_region_4)(struct alpha_busspace *space,
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size_t offset,
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u_int32_t value, size_t count);
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void (*abo_copy_region_1)(struct alpha_busspace *space,
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size_t offset1, size_t offset2,
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size_t count);
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void (*abo_copy_region_2)(struct alpha_busspace *space,
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size_t offset1, size_t offset2,
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size_t count);
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void (*abo_copy_region_4)(struct alpha_busspace *space,
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size_t offset1, size_t offset2,
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size_t count);
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void (*abo_barrier)(struct alpha_busspace *space, size_t offset,
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size_t len, int flags);
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};
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struct alpha_busspace {
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struct alpha_busspace_ops *ab_ops;
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};
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/* Back-compat functions for old ISA drivers */
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extern struct alpha_busspace *busspace_isa_io;
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extern struct alpha_busspace *busspace_isa_mem;
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#define inb(o) bus_space_read_1(busspace_isa_io, o, 0)
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#define inw(o) bus_space_read_2(busspace_isa_io, o, 0)
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#define inl(o) bus_space_read_4(busspace_isa_io, o, 0)
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#define outb(o, v) bus_space_write_1(busspace_isa_io, o, 0, v)
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#define outw(o, v) bus_space_write_2(busspace_isa_io, o, 0, v)
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#define outl(o, v) bus_space_write_4(busspace_isa_io, o, 0, v)
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#define readb(o) bus_space_read_1(busspace_isa_mem, o, 0)
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#define readw(o) bus_space_read_2(busspace_isa_mem, o, 0)
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#define readl(o) bus_space_read_4(busspace_isa_mem, o, 0)
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#define writeb(o, v) bus_space_write_1(busspace_isa_mem, o, 0, v)
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#define writew(o, v) bus_space_write_2(busspace_isa_mem, o, 0, v)
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#define writel(o, v) bus_space_write_4(busspace_isa_mem, o, 0, v)
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#define insb(o, a, c) bus_space_read_multi_1(busspace_isa_io, o, 0, \
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(void*)(a), c)
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#define insw(o, a, c) bus_space_read_multi_2(busspace_isa_io, o, 0, \
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(void*)(a), c)
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#define insl(o, a, c) bus_space_read_multi_4(busspace_isa_io, o, 0, \
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(void*)(a), c)
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#define outsb(o, a, c) bus_space_write_multi_1(busspace_isa_io, o, 0, \
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(void*)(a), c)
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#define outsw(o, a, c) bus_space_write_multi_2(busspace_isa_io, o, 0, \
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(void*)(a), c)
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#define outsl(o, a, c) bus_space_write_multi_4(busspace_isa_io, o, 0, \
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(void*)(a), c)
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#define memcpy_fromio(d, s, c) \
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bus_space_read_region_1(busspace_isa_mem, (uintptr_t)(s), 0, d, c)
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#define memcpy_toio(d, s, c) \
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bus_space_write_region_1(busspace_isa_mem, (uintptr_t)(d), 0, s, c)
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#define memcpy_io(d, s, c) \
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bus_space_copy_region_1(busspace_isa_mem, (uintptr_t)(s), 0, d, 0, c)
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#define memset_io(d, v, c) \
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bus_space_set_region_1(busspace_isa_mem, (uintptr_t)(d), 0, v, c)
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#define memsetw_io(d, v, c) \
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bus_space_set_region_2(busspace_isa_mem, (uintptr_t)(d), 0, v, c)
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static __inline void
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memsetw(void *d, int val, size_t size)
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{
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u_int16_t *sp = d;
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while (size--)
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*sp++ = val;
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}
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void busspace_generic_read_multi_1(struct alpha_busspace *space,
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size_t offset,
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u_int8_t *addr, size_t count);
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void busspace_generic_read_multi_2(struct alpha_busspace *space,
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size_t offset,
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u_int16_t *addr, size_t count);
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void busspace_generic_read_multi_4(struct alpha_busspace *space,
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size_t offset,
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u_int32_t *addr, size_t count);
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void busspace_generic_read_region_1(struct alpha_busspace *space,
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size_t offset,
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u_int8_t *addr, size_t count);
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void busspace_generic_read_region_2(struct alpha_busspace *space,
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size_t offset,
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u_int16_t *addr, size_t count);
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void busspace_generic_read_region_4(struct alpha_busspace *space,
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size_t offset,
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u_int32_t *addr, size_t count);
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void busspace_generic_write_multi_1(struct alpha_busspace *space,
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size_t offset,
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const u_int8_t *addr, size_t count);
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void busspace_generic_write_multi_2(struct alpha_busspace *space,
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size_t offset,
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const u_int16_t *addr, size_t count);
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void busspace_generic_write_multi_4(struct alpha_busspace *space,
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size_t offset,
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const u_int32_t *addr, size_t count);
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void busspace_generic_write_region_1(struct alpha_busspace *space,
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size_t offset,
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const u_int8_t *addr, size_t count);
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void busspace_generic_write_region_2(struct alpha_busspace *space,
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size_t offset,
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const u_int16_t *addr, size_t count);
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void busspace_generic_write_region_4(struct alpha_busspace *space,
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size_t offset,
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const u_int32_t *addr, size_t count);
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void busspace_generic_set_multi_1(struct alpha_busspace *space,
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size_t offset,
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u_int8_t value, size_t count);
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void busspace_generic_set_multi_2(struct alpha_busspace *space,
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size_t offset,
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u_int16_t value, size_t count);
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void busspace_generic_set_multi_4(struct alpha_busspace *space,
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size_t offset,
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u_int32_t value, size_t count);
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void busspace_generic_set_region_1(struct alpha_busspace *space,
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size_t offset,
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u_int8_t value, size_t count);
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void busspace_generic_set_region_2(struct alpha_busspace *space,
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size_t offset,
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u_int16_t value, size_t count);
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void busspace_generic_set_region_4(struct alpha_busspace *space,
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size_t offset,
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u_int32_t value, size_t count);
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void busspace_generic_copy_region_1(struct alpha_busspace *space,
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size_t offset1,
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size_t offset2,
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size_t count);
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void busspace_generic_copy_region_2(struct alpha_busspace *space,
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size_t offset1,
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size_t offset2,
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size_t count);
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void busspace_generic_copy_region_4(struct alpha_busspace *space,
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size_t offset1,
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size_t offset2,
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size_t count);
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void busspace_generic_barrier(struct alpha_busspace *space,
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size_t offset, size_t len,
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int flags);
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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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#define bus_space_read_1(t, h, o) \
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(t)->ab_ops->abo_read_1(t, (h)+(o))
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#define bus_space_read_2(t, h, o) \
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(t)->ab_ops->abo_read_2(t, (h)+(o))
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#define bus_space_read_4(t, h, o) \
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(t)->ab_ops->abo_read_4(t, (h)+(o))
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#define bus_space_read_multi_1(t, h, o, a, c) \
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(t)->ab_ops->abo_read_multi_1(t, (h)+(o), a, c)
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#define bus_space_read_multi_2(t, h, o, a, c) \
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(t)->ab_ops->abo_read_multi_2(t, (h)+(o), a, c)
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#define bus_space_read_multi_4(t, h, o, a, c) \
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(t)->ab_ops->abo_read_multi_4(t, (h)+(o), a, c)
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#define bus_space_read_region_1(t, h, o, a, c) \
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(t)->ab_ops->abo_read_region_1(t, (h)+(o), a, c)
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#define bus_space_read_region_2(t, h, o, a, c) \
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(t)->ab_ops->abo_read_region_2(t, (h)+(o), a, c)
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#define bus_space_read_region_4(t, h, o, a, c) \
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(t)->ab_ops->abo_read_region_4(t, (h)+(o), a, c)
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#define bus_space_write_1(t, h, o, v) \
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(t)->ab_ops->abo_write_1(t, (h)+(o), v)
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#define bus_space_write_2(t, h, o, v) \
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(t)->ab_ops->abo_write_2(t, (h)+(o), v)
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#define bus_space_write_4(t, h, o, v) \
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(t)->ab_ops->abo_write_4(t, (h)+(o), v)
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#define bus_space_write_multi_1(t, h, o, a, c) \
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(t)->ab_ops->abo_write_multi_1(t, (h)+(o), a, c)
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#define bus_space_write_multi_2(t, h, o, a, c) \
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(t)->ab_ops->abo_write_multi_2(t, (h)+(o), a, c)
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#define bus_space_write_multi_4(t, h, o, a, c) \
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(t)->ab_ops->abo_write_multi_4(t, (h)+(o), a, c)
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#define bus_space_write_region_1(t, h, o, a, c) \
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(t)->ab_ops->abo_write_region_1(t, (h)+(o), a, c)
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#define bus_space_write_region_2(t, h, o, a, c) \
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(t)->ab_ops->abo_write_region_2(t, (h)+(o), a, c)
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#define bus_space_write_region_4(t, h, o, a, c) \
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(t)->ab_ops->abo_write_region_4(t, (h)+(o), a, c)
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#define bus_space_set_multi_1(t, h, o, v, c) \
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(t)->ab_ops->abo_set_multi_1(t, (h)+(o), v, c)
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#define bus_space_set_multi_2(t, h, o, v, c) \
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(t)->ab_ops->abo_set_multi_2(t, (h)+(o), v, c)
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#define bus_space_set_multi_4(t, h, o, v, c) \
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(t)->ab_ops->abo_set_multi_4(t, (h)+(o), v, c)
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#define bus_space_set_region_1(t, h, o, v, c) \
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(t)->ab_ops->abo_set_region_1(t, (h)+(o), v, c)
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#define bus_space_set_region_2(t, h, o, v, c) \
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(t)->ab_ops->abo_set_region_2(t, (h)+(o), v, c)
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#define bus_space_set_region_4(t, h, o, v, c) \
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(t)->ab_ops->abo_set_region_4(t, (h)+(o), v, c)
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#define bus_space_copy_region_1(t, h1, o1, h2, o2, c) \
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(t)->ab_ops->abo_copy_region_1(t, (h1)+(o1), (h2)+(o2), c)
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#define bus_space_copy_region_2(t, h1, o1, h2, o2, c) \
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(t)->ab_ops->abo_copy_region_2(t, (h1)+(o1), (h2)+(o2), c)
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#define bus_space_copy_region_4(t, h1, o1, h2, o2, c) \
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(t)->ab_ops->abo_copy_region_4(t, (h1)+(o1), (h2)+(o2), c)
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#define bus_space_barrier(t, h, o, l, f) \
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(t)->ab_ops->abo_barrier(t, (h)+(o), l, f)
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/*
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* Stream accesses are the same as normal accesses on alpha; there are no
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* supported bus systems with an endianess different from the host one.
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*/
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#define bus_space_read_stream_1(t, h, o) bus_space_read_1((t), (h), (o))
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#define bus_space_read_stream_2(t, h, o) bus_space_read_2((t), (h), (o))
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#define bus_space_read_stream_4(t, h, o) bus_space_read_4((t), (h), (o))
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#define bus_space_read_multi_stream_1(t, h, o, a, c) \
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bus_space_read_multi_1((t), (h), (o), (a), (c))
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#define bus_space_read_multi_stream_2(t, h, o, a, c) \
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bus_space_read_multi_2((t), (h), (o), (a), (c))
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#define bus_space_read_multi_stream_4(t, h, o, a, c) \
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bus_space_read_multi_4((t), (h), (o), (a), (c))
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#define bus_space_write_stream_1(t, h, o, v) \
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bus_space_write_1((t), (h), (o), (v))
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#define bus_space_write_stream_2(t, h, o, v) \
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bus_space_write_2((t), (h), (o), (v))
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#define bus_space_write_stream_4(t, h, o, v) \
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bus_space_write_4((t), (h), (o), (v))
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#define bus_space_write_multi_stream_1(t, h, o, a, c) \
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bus_space_write_multi_1((t), (h), (o), (a), (c))
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#define bus_space_write_multi_stream_2(t, h, o, a, c) \
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bus_space_write_multi_2((t), (h), (o), (a), (c))
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#define bus_space_write_multi_stream_4(t, h, o, a, c) \
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bus_space_write_multi_4((t), (h), (o), (a), (c))
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#define bus_space_set_multi_stream_1(t, h, o, v, c) \
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bus_space_set_multi_1((t), (h), (o), (v), (c))
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#define bus_space_set_multi_stream_2(t, h, o, v, c) \
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bus_space_set_multi_2((t), (h), (o), (v), (c))
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#define bus_space_set_multi_stream_4(t, h, o, v, c) \
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bus_space_set_multi_4((t), (h), (o), (v), (c))
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#define bus_space_read_region_stream_1(t, h, o, a, c) \
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bus_space_read_region_1((t), (h), (o), (a), (c))
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#define bus_space_read_region_stream_2(t, h, o, a, c) \
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bus_space_read_region_2((t), (h), (o), (a), (c))
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#define bus_space_read_region_stream_4(t, h, o, a, c) \
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bus_space_read_region_4((t), (h), (o), (a), (c))
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#define bus_space_write_region_stream_1(t, h, o, a, c) \
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bus_space_write_region_1((t), (h), (o), (a), (c))
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#define bus_space_write_region_stream_2(t, h, o, a, c) \
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bus_space_write_region_2((t), (h), (o), (a), (c))
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#define bus_space_write_region_stream_4(t, h, o, a, c) \
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bus_space_write_region_4((t), (h), (o), (a), (c))
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#define bus_space_set_region_stream_1(t, h, o, v, c) \
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bus_space_set_region_1((t), (h), (o), (v), (c))
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#define bus_space_set_region_stream_2(t, h, o, v, c) \
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bus_space_set_region_2((t), (h), (o), (v), (c))
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#define bus_space_set_region_stream_4(t, h, o, v, c) \
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bus_space_set_region_4((t), (h), (o), (v), (c))
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#define bus_space_copy_region_stream_1(t, h1, o1, h2, o2, c) \
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bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_region_stream_2(t, h1, o1, h2, o2, c) \
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bus_space_copy_region_2((t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_region_stream_4(t, h1, o1, h2, o2, c) \
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bus_space_copy_region_4((t), (h1), (o1), (h2), (o2), (c))
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#include <machine/bus_dma.h>
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#endif /* _ALPHA_BUS_H_ */
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