1017 lines
30 KiB
C
1017 lines
30 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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#ifndef _I386_BUS_H_
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#define _I386_BUS_H_
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#include <machine/pio.h>
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#ifndef __BUS_SPACE_COMPAT_OLDDEFS
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#define __BUS_SPACE_COMPAT_OLDDEFS
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#endif
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/*
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* Values for the i386 bus space tag, not to be used directly by MI code.
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*/
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#define I386_BUS_SPACE_IO 0 /* space is i/o space */
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#define I386_BUS_SPACE_MEM 1 /* space is mem space */
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/*
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* Bus address and size types
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*/
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typedef u_long bus_addr_t;
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typedef u_long bus_size_t;
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/*
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* Access methods for bus resources and address space.
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*/
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typedef int bus_space_tag_t;
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typedef u_long bus_space_handle_t;
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/*
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* int bus_space_map __P((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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#define BUS_SPACE_MAP_CACHEABLE 0x01
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#define BUS_SPACE_MAP_LINEAR 0x02
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int i386_memio_map __P((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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/* like map, but without extent map checking/allocation */
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int _i386_memio_map __P((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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#define bus_space_map(t, a, s, f, hp) \
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i386_memio_map((t), (a), (s), (f), (hp))
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/*
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* int bus_space_unmap __P((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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void i386_memio_unmap __P((bus_space_tag_t t, bus_space_handle_t bsh,
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bus_size_t size));
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#define bus_space_unmap(t, h, s) \
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i386_memio_unmap((t), (h), (s))
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/*
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* int bus_space_subregion __P((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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int i386_memio_subregion __P((bus_space_tag_t t, bus_space_handle_t bsh,
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bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp));
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#define bus_space_subregion(t, h, o, s, nhp) \
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i386_memio_subregion((t), (h), (o), (s), (nhp))
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/*
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* int bus_space_alloc __P((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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int i386_memio_alloc __P((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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#define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \
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i386_memio_alloc((t), (rs), (re), (s), (a), (b), (f), (ap), (hp))
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/*
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* int bus_space_free __P((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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void i386_memio_free __P((bus_space_tag_t t, bus_space_handle_t bsh,
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bus_size_t size));
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#define bus_space_free(t, h, s) \
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i386_memio_free((t), (h), (s))
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/*
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* u_intN_t bus_space_read_N __P((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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#define bus_space_read_1(t, h, o) \
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((t) == I386_BUS_SPACE_IO ? (inb((h) + (o))) : \
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(*(volatile u_int8_t *)((h) + (o))))
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#define bus_space_read_2(t, h, o) \
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((t) == I386_BUS_SPACE_IO ? (inw((h) + (o))) : \
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(*(volatile u_int16_t *)((h) + (o))))
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#define bus_space_read_4(t, h, o) \
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((t) == I386_BUS_SPACE_IO ? (inl((h) + (o))) : \
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(*(volatile u_int32_t *)((h) + (o))))
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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) !!! bus_space_read_8 unimplemented !!!
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#endif
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/*
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* void bus_space_read_multi_N __P((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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#define bus_space_read_multi_1(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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insb((h) + (o), (a), (c)); \
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} else { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: movb (%1),%%al ; \
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stosb ; \
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loop 1b" : \
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"=&a" (__x) : \
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"r" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%edi", "%ecx", "memory"); \
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} \
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} while (0)
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#define bus_space_read_multi_2(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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insw((h) + (o), (a), (c)); \
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} else { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: movw (%1),%%ax ; \
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stosw ; \
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loop 1b" : \
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"=&a" (__x) : \
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"r" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%edi", "%ecx", "memory"); \
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} \
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} while (0)
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#define bus_space_read_multi_4(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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insl((h) + (o), (a), (c)); \
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} else { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: movl (%1),%%eax ; \
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stosl ; \
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loop 1b" : \
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"=&a" (__x) : \
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"r" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%edi", "%ecx", "memory"); \
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} \
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} while (0)
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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 !!! bus_space_read_multi_8 unimplemented !!!
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#endif
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/*
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* void bus_space_read_region_N __P((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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#define bus_space_read_region_1(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: inb %w1,%%al ; \
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stosb ; \
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incl %1 ; \
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loop 1b" : \
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"=&a" (__x) : \
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"d" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%edx", "%edi", "%ecx", "memory"); \
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} else { \
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__asm __volatile(" \
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cld ; \
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repne ; \
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movsb" : \
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: \
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"S" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%esi", "%edi", "%ecx", "memory"); \
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} \
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} while (0)
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#define bus_space_read_region_2(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: inw %w1,%%ax ; \
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stosw ; \
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addl $2,%1 ; \
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loop 1b" : \
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"=&a" (__x) : \
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"d" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%edx", "%edi", "%ecx", "memory"); \
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} else { \
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__asm __volatile(" \
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cld ; \
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repne ; \
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movsw" : \
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: \
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"S" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%esi", "%edi", "%ecx", "memory"); \
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} \
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} while (0)
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#define bus_space_read_region_4(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: inl %w1,%%eax ; \
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stosl ; \
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addl $4,%1 ; \
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loop 1b" : \
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"=&a" (__x) : \
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"d" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%edx", "%edi", "%ecx", "memory"); \
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} else { \
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__asm __volatile(" \
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cld ; \
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repne ; \
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movsl" : \
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: \
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"S" ((h) + (o)), "D" ((a)), "c" ((c)) : \
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"%esi", "%edi", "%ecx", "memory"); \
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} \
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} while (0)
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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 !!! bus_space_read_region_8 unimplemented !!!
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#endif
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/*
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* void bus_space_write_N __P((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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#define bus_space_write_1(t, h, o, v) do { \
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if ((t) == I386_BUS_SPACE_IO) \
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outb((h) + (o), (v)); \
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else \
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((void)(*(volatile u_int8_t *)((h) + (o)) = (v))); \
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} while (0)
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#define bus_space_write_2(t, h, o, v) do { \
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if ((t) == I386_BUS_SPACE_IO) \
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outw((h) + (o), (v)); \
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else \
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((void)(*(volatile u_int16_t *)((h) + (o)) = (v))); \
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} while (0)
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#define bus_space_write_4(t, h, o, v) do { \
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if ((t) == I386_BUS_SPACE_IO) \
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outl((h) + (o), (v)); \
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else \
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((void)(*(volatile u_int32_t *)((h) + (o)) = (v))); \
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} while (0)
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#if 0 /* Cause a link error for bus_space_write_8 */
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#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
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#endif
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/*
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* void bus_space_write_multi_N __P((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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#define bus_space_write_multi_1(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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outsb((h) + (o), (a), (c)); \
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} else { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: lodsb ; \
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movb %%al,(%1) ; \
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loop 1b" : \
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"=&a" (__x) : \
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"r" ((h) + (o)), "S" ((a)), "c" ((c)) : \
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"%esi", "%ecx"); \
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} \
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} while (0)
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#define bus_space_write_multi_2(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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outsw((h) + (o), (a), (c)); \
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} else { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: lodsw ; \
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movw %%ax,(%1) ; \
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loop 1b" : \
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"=&a" (__x) : \
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"r" ((h) + (o)), "S" ((a)), "c" ((c)) : \
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"%esi", "%ecx"); \
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} \
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} while (0)
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#define bus_space_write_multi_4(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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outsl((h) + (o), (a), (c)); \
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} else { \
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int __x __asm__("%eax"); \
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__asm __volatile(" \
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cld ; \
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1: lodsl ; \
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movl %%eax,(%1) ; \
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loop 1b" : \
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"=&a" (__x) : \
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"r" ((h) + (o)), "S" ((a)), "c" ((c)) : \
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"%esi", "%ecx"); \
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} \
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} while (0)
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#if 0 /* Cause a link error for bus_space_write_multi_8 */
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#define bus_space_write_multi_8(t, h, o, a, c) \
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!!! bus_space_write_multi_8 unimplemented !!!
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#endif
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/*
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* void bus_space_write_region_N __P((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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#define bus_space_write_region_1(t, h, o, a, c) do { \
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if ((t) == I386_BUS_SPACE_IO) { \
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int __x __asm__("%eax"); \
|
|
__asm __volatile(" \
|
|
cld ; \
|
|
1: lodsb ; \
|
|
outb %%al,%w1 ; \
|
|
incl %1 ; \
|
|
loop 1b" : \
|
|
"=&a" (__x) : \
|
|
"d" ((h) + (o)), "S" ((a)), "c" ((c)) : \
|
|
"%edx", "%esi", "%ecx", "memory"); \
|
|
} else { \
|
|
__asm __volatile(" \
|
|
cld ; \
|
|
repne ; \
|
|
movsb" : \
|
|
: \
|
|
"D" ((h) + (o)), "S" ((a)), "c" ((c)) : \
|
|
"%edi", "%esi", "%ecx", "memory"); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define bus_space_write_region_2(t, h, o, a, c) do { \
|
|
if ((t) == I386_BUS_SPACE_IO) { \
|
|
int __x __asm__("%eax"); \
|
|
__asm __volatile(" \
|
|
cld ; \
|
|
1: lodsw ; \
|
|
outw %%ax,%w1 ; \
|
|
addl $2,%1 ; \
|
|
loop 1b" : \
|
|
"=&a" (__x) : \
|
|
"d" ((h) + (o)), "S" ((a)), "c" ((c)) : \
|
|
"%edx", "%esi", "%ecx", "memory"); \
|
|
} else { \
|
|
__asm __volatile(" \
|
|
cld ; \
|
|
repne ; \
|
|
movsw" : \
|
|
: \
|
|
"D" ((h) + (o)), "S" ((a)), "c" ((c)) : \
|
|
"%edi", "%esi", "%ecx", "memory"); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define bus_space_write_region_4(t, h, o, a, c) do { \
|
|
if ((t) == I386_BUS_SPACE_IO) { \
|
|
int __x __asm__("%eax"); \
|
|
__asm __volatile(" \
|
|
cld ; \
|
|
1: lodsl ; \
|
|
outl %%eax,%w1 ; \
|
|
addl $4,%1 ; \
|
|
loop 1b" : \
|
|
"=&a" (__x) : \
|
|
"d" ((h) + (o)), "S" ((a)), "c" ((c)) : \
|
|
"%edx", "%esi", "%ecx", "memory"); \
|
|
} else { \
|
|
__asm __volatile(" \
|
|
cld ; \
|
|
repne ; \
|
|
movsl" : \
|
|
: \
|
|
"D" ((h) + (o)), "S" ((a)), "c" ((c)) : \
|
|
"%edi", "%esi", "%ecx", "memory"); \
|
|
} \
|
|
} while (0)
|
|
|
|
#if 0 /* Cause a link error for bus_space_write_region_8 */
|
|
#define bus_space_write_region_8 \
|
|
!!! bus_space_write_region_8 unimplemented !!!
|
|
#endif
|
|
|
|
/*
|
|
* void bus_space_set_multi_N __P((bus_space_tag_t tag,
|
|
* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
|
|
* size_t count));
|
|
*
|
|
* Write the 1, 2, 4, or 8 byte value `val' to bus space described
|
|
* by tag/handle/offset `count' times.
|
|
*/
|
|
|
|
static __inline void bus_space_set_multi_1 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, u_int8_t, size_t));
|
|
static __inline void bus_space_set_multi_2 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, u_int16_t, size_t));
|
|
static __inline void bus_space_set_multi_4 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, u_int32_t, size_t));
|
|
|
|
static __inline void
|
|
bus_space_set_multi_1(t, h, o, v, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h;
|
|
bus_size_t o;
|
|
u_int8_t v;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr = h + o;
|
|
|
|
if (t == I386_BUS_SPACE_IO)
|
|
while (c--)
|
|
outb(addr, v);
|
|
else
|
|
while (c--)
|
|
*(volatile u_int8_t *)(addr) = v;
|
|
}
|
|
|
|
static __inline void
|
|
bus_space_set_multi_2(t, h, o, v, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h;
|
|
bus_size_t o;
|
|
u_int16_t v;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr = h + o;
|
|
|
|
if (t == I386_BUS_SPACE_IO)
|
|
while (c--)
|
|
outw(addr, v);
|
|
else
|
|
while (c--)
|
|
*(volatile u_int16_t *)(addr) = v;
|
|
}
|
|
|
|
static __inline void
|
|
bus_space_set_multi_4(t, h, o, v, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h;
|
|
bus_size_t o;
|
|
u_int32_t v;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr = h + o;
|
|
|
|
if (t == I386_BUS_SPACE_IO)
|
|
while (c--)
|
|
outl(addr, v);
|
|
else
|
|
while (c--)
|
|
*(volatile u_int32_t *)(addr) = v;
|
|
}
|
|
|
|
#if 0 /* Cause a link error for bus_space_set_multi_8 */
|
|
#define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!!
|
|
#endif
|
|
|
|
/*
|
|
* void bus_space_set_region_N __P((bus_space_tag_t tag,
|
|
* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
|
|
* size_t count));
|
|
*
|
|
* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
|
|
* by tag/handle starting at `offset'.
|
|
*/
|
|
|
|
static __inline void bus_space_set_region_1 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, u_int8_t, size_t));
|
|
static __inline void bus_space_set_region_2 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, u_int16_t, size_t));
|
|
static __inline void bus_space_set_region_4 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, u_int32_t, size_t));
|
|
|
|
static __inline void
|
|
bus_space_set_region_1(t, h, o, v, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h;
|
|
bus_size_t o;
|
|
u_int8_t v;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr = h + o;
|
|
|
|
if (t == I386_BUS_SPACE_IO)
|
|
for (; c != 0; c--, addr++)
|
|
outb(addr, v);
|
|
else
|
|
for (; c != 0; c--, addr++)
|
|
*(volatile u_int8_t *)(addr) = v;
|
|
}
|
|
|
|
static __inline void
|
|
bus_space_set_region_2(t, h, o, v, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h;
|
|
bus_size_t o;
|
|
u_int16_t v;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr = h + o;
|
|
|
|
if (t == I386_BUS_SPACE_IO)
|
|
for (; c != 0; c--, addr += 2)
|
|
outw(addr, v);
|
|
else
|
|
for (; c != 0; c--, addr += 2)
|
|
*(volatile u_int16_t *)(addr) = v;
|
|
}
|
|
|
|
static __inline void
|
|
bus_space_set_region_4(t, h, o, v, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h;
|
|
bus_size_t o;
|
|
u_int32_t v;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr = h + o;
|
|
|
|
if (t == I386_BUS_SPACE_IO)
|
|
for (; c != 0; c--, addr += 4)
|
|
outl(addr, v);
|
|
else
|
|
for (; c != 0; c--, addr += 4)
|
|
*(volatile u_int32_t *)(addr) = v;
|
|
}
|
|
|
|
#if 0 /* Cause a link error for bus_space_set_region_8 */
|
|
#define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!!
|
|
#endif
|
|
|
|
/*
|
|
* void bus_space_copy_region_N __P((bus_space_tag_t tag,
|
|
* bus_space_handle_t bsh1, bus_size_t off1,
|
|
* bus_space_handle_t bsh2, bus_size_t off2,
|
|
* size_t count));
|
|
*
|
|
* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
|
|
* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
|
|
*/
|
|
|
|
static __inline void bus_space_copy_region_1 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, bus_space_handle_t,
|
|
bus_size_t, size_t));
|
|
static __inline void bus_space_copy_region_2 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, bus_space_handle_t,
|
|
bus_size_t, size_t));
|
|
static __inline void bus_space_copy_region_4 __P((bus_space_tag_t,
|
|
bus_space_handle_t, bus_size_t, bus_space_handle_t,
|
|
bus_size_t, size_t));
|
|
|
|
static __inline void
|
|
bus_space_copy_region_1(t, h1, o1, h2, o2, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h1;
|
|
bus_size_t o1;
|
|
bus_space_handle_t h2;
|
|
bus_size_t o2;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr1 = h1 + o1;
|
|
bus_addr_t addr2 = h2 + o2;
|
|
|
|
if (t == I386_BUS_SPACE_IO) {
|
|
if (addr1 >= addr2) {
|
|
/* src after dest: copy forward */
|
|
for (; c != 0; c--, addr1++, addr2++)
|
|
outb(addr2, inb(addr1));
|
|
} else {
|
|
/* dest after src: copy backwards */
|
|
for (addr1 += (c - 1), addr2 += (c - 1);
|
|
c != 0; c--, addr1--, addr2--)
|
|
outb(addr2, inb(addr1));
|
|
}
|
|
} else {
|
|
if (addr1 >= addr2) {
|
|
/* src after dest: copy forward */
|
|
for (; c != 0; c--, addr1++, addr2++)
|
|
*(volatile u_int8_t *)(addr2) =
|
|
*(volatile u_int8_t *)(addr1);
|
|
} else {
|
|
/* dest after src: copy backwards */
|
|
for (addr1 += (c - 1), addr2 += (c - 1);
|
|
c != 0; c--, addr1--, addr2--)
|
|
*(volatile u_int8_t *)(addr2) =
|
|
*(volatile u_int8_t *)(addr1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static __inline void
|
|
bus_space_copy_region_2(t, h1, o1, h2, o2, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h1;
|
|
bus_size_t o1;
|
|
bus_space_handle_t h2;
|
|
bus_size_t o2;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr1 = h1 + o1;
|
|
bus_addr_t addr2 = h2 + o2;
|
|
|
|
if (t == I386_BUS_SPACE_IO) {
|
|
if (addr1 >= addr2) {
|
|
/* src after dest: copy forward */
|
|
for (; c != 0; c--, addr1 += 2, addr2 += 2)
|
|
outw(addr2, inw(addr1));
|
|
} else {
|
|
/* dest after src: copy backwards */
|
|
for (addr1 += 2 * (c - 1), addr2 += 2 * (c - 1);
|
|
c != 0; c--, addr1 -= 2, addr2 -= 2)
|
|
outw(addr2, inw(addr1));
|
|
}
|
|
} else {
|
|
if (addr1 >= addr2) {
|
|
/* src after dest: copy forward */
|
|
for (; c != 0; c--, addr1 += 2, addr2 += 2)
|
|
*(volatile u_int16_t *)(addr2) =
|
|
*(volatile u_int16_t *)(addr1);
|
|
} else {
|
|
/* dest after src: copy backwards */
|
|
for (addr1 += 2 * (c - 1), addr2 += 2 * (c - 1);
|
|
c != 0; c--, addr1 -= 2, addr2 -= 2)
|
|
*(volatile u_int16_t *)(addr2) =
|
|
*(volatile u_int16_t *)(addr1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static __inline void
|
|
bus_space_copy_region_4(t, h1, o1, h2, o2, c)
|
|
bus_space_tag_t t;
|
|
bus_space_handle_t h1;
|
|
bus_size_t o1;
|
|
bus_space_handle_t h2;
|
|
bus_size_t o2;
|
|
size_t c;
|
|
{
|
|
bus_addr_t addr1 = h1 + o1;
|
|
bus_addr_t addr2 = h2 + o2;
|
|
|
|
if (t == I386_BUS_SPACE_IO) {
|
|
if (addr1 >= addr2) {
|
|
/* src after dest: copy forward */
|
|
for (; c != 0; c--, addr1 += 4, addr2 += 4)
|
|
outl(addr2, inl(addr1));
|
|
} else {
|
|
/* dest after src: copy backwards */
|
|
for (addr1 += 4 * (c - 1), addr2 += 4 * (c - 1);
|
|
c != 0; c--, addr1 -= 4, addr2 -= 4)
|
|
outl(addr2, inl(addr1));
|
|
}
|
|
} else {
|
|
if (addr1 >= addr2) {
|
|
/* src after dest: copy forward */
|
|
for (; c != 0; c--, addr1 += 4, addr2 += 4)
|
|
*(volatile u_int32_t *)(addr2) =
|
|
*(volatile u_int32_t *)(addr1);
|
|
} else {
|
|
/* dest after src: copy backwards */
|
|
for (addr1 += 4 * (c - 1), addr2 += 4 * (c - 1);
|
|
c != 0; c--, addr1 -= 4, addr2 -= 4)
|
|
*(volatile u_int32_t *)(addr2) =
|
|
*(volatile u_int32_t *)(addr1);
|
|
}
|
|
}
|
|
}
|
|
|
|
#if 0 /* Cause a link error for bus_space_copy_8 */
|
|
#define bus_space_copy_region_8 !!! bus_space_copy_region_8 unimplemented !!!
|
|
#endif
|
|
|
|
#ifdef __BUS_SPACE_COMPAT_OLDDEFS
|
|
/* compatibility definitions; deprecated */
|
|
#define bus_space_copy_1(t, h1, o1, h2, o2, c) \
|
|
bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
|
|
#define bus_space_copy_2(t, h1, o1, h2, o2, c) \
|
|
bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
|
|
#define bus_space_copy_4(t, h1, o1, h2, o2, c) \
|
|
bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
|
|
#define bus_space_copy_8(t, h1, o1, h2, o2, c) \
|
|
bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Bus read/write barrier methods.
|
|
*
|
|
* void bus_space_barrier __P((bus_space_tag_t tag,
|
|
* bus_space_handle_t bsh, bus_size_t offset,
|
|
* bus_size_t len, int flags));
|
|
*
|
|
* Note: the i386 does not currently require barriers, but we must
|
|
* provide the flags to MI code.
|
|
*/
|
|
#define bus_space_barrier(t, h, o, l, f) \
|
|
((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
|
|
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
|
|
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
|
|
|
|
#ifdef __BUS_SPACE_COMPAT_OLDDEFS
|
|
/* compatibility definitions; deprecated */
|
|
#define BUS_BARRIER_READ BUS_SPACE_BARRIER_READ
|
|
#define BUS_BARRIER_WRITE BUS_SPACE_BARRIER_WRITE
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Flags used in various bus DMA methods.
|
|
*/
|
|
#define BUS_DMA_WAITOK 0x00 /* safe to sleep (pseudo-flag) */
|
|
#define BUS_DMA_NOWAIT 0x01 /* not safe to sleep */
|
|
#define BUS_DMA_ALLOCNOW 0x02 /* perform resource allocation now */
|
|
#define BUS_DMAMEM_NOSYNC 0x04 /* map memory to not require sync */
|
|
#define BUS_DMA_BUS1 0x10 /* placeholders for bus functions... */
|
|
#define BUS_DMA_BUS2 0x20
|
|
#define BUS_DMA_BUS3 0x40
|
|
#define BUS_DMA_BUS4 0x80
|
|
|
|
/* Forwards needed by prototypes below. */
|
|
struct mbuf;
|
|
struct uio;
|
|
|
|
/*
|
|
* bus_dmasync_op_t
|
|
*
|
|
* Operations performed by bus_dmamap_sync().
|
|
*/
|
|
typedef enum {
|
|
BUS_DMASYNC_PREREAD,
|
|
BUS_DMASYNC_POSTREAD,
|
|
BUS_DMASYNC_PREWRITE,
|
|
BUS_DMASYNC_POSTWRITE,
|
|
} bus_dmasync_op_t;
|
|
|
|
typedef struct i386_bus_dma_tag *bus_dma_tag_t;
|
|
typedef struct i386_bus_dmamap *bus_dmamap_t;
|
|
|
|
/*
|
|
* bus_dma_segment_t
|
|
*
|
|
* Describes a single contiguous DMA transaction. Values
|
|
* are suitable for programming into DMA registers.
|
|
*/
|
|
struct i386_bus_dma_segment {
|
|
bus_addr_t ds_addr; /* DMA address */
|
|
bus_size_t ds_len; /* length of transfer */
|
|
};
|
|
typedef struct i386_bus_dma_segment bus_dma_segment_t;
|
|
|
|
/*
|
|
* bus_dma_tag_t
|
|
*
|
|
* A machine-dependent opaque type describing the implementation of
|
|
* DMA for a given bus.
|
|
*/
|
|
|
|
struct i386_bus_dma_tag {
|
|
void *_cookie; /* cookie used in the guts */
|
|
|
|
/*
|
|
* DMA mapping methods.
|
|
*/
|
|
int (*_dmamap_create) __P((bus_dma_tag_t, bus_size_t, int,
|
|
bus_size_t, bus_size_t, int, bus_dmamap_t *));
|
|
void (*_dmamap_destroy) __P((bus_dma_tag_t, bus_dmamap_t));
|
|
int (*_dmamap_load) __P((bus_dma_tag_t, bus_dmamap_t, void *,
|
|
bus_size_t, struct proc *, int));
|
|
int (*_dmamap_load_mbuf) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct mbuf *, int));
|
|
int (*_dmamap_load_uio) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct uio *, int));
|
|
int (*_dmamap_load_raw) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_dma_segment_t *, int, bus_size_t, int));
|
|
void (*_dmamap_unload) __P((bus_dma_tag_t, bus_dmamap_t));
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void (*_dmamap_sync) __P((bus_dma_tag_t, bus_dmamap_t,
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bus_dmasync_op_t));
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|
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/*
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* DMA memory utility functions.
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*/
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int (*_dmamem_alloc) __P((bus_dma_tag_t, bus_size_t, bus_size_t,
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bus_size_t, bus_dma_segment_t *, int, int *, int));
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void (*_dmamem_free) __P((bus_dma_tag_t,
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bus_dma_segment_t *, int));
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int (*_dmamem_map) __P((bus_dma_tag_t, bus_dma_segment_t *,
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int, size_t, caddr_t *, int));
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void (*_dmamem_unmap) __P((bus_dma_tag_t, caddr_t, size_t));
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int (*_dmamem_mmap) __P((bus_dma_tag_t, bus_dma_segment_t *,
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int, int, int, int));
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};
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#define bus_dmamap_create(t, s, n, m, b, f, p) \
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(*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
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#define bus_dmamap_destroy(t, p) \
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(*(t)->_dmamap_destroy)((t), (p))
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#define bus_dmamap_load(t, m, b, s, p, f) \
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(*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
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#define bus_dmamap_load_mbuf(t, m, b, f) \
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(*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
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#define bus_dmamap_load_uio(t, m, u, f) \
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(*(t)->_dmamap_load_uio)((t), (m), (u), (f))
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#define bus_dmamap_load_raw(t, m, sg, n, s, f) \
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(*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
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#define bus_dmamap_unload(t, p) \
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(*(t)->_dmamap_unload)((t), (p))
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#define bus_dmamap_sync(t, p, o) \
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(void)((t)->_dmamap_sync ? \
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(*(t)->_dmamap_sync)((t), (p), (o)) : (void)0)
|
|
|
|
#define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
|
|
(*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f))
|
|
#define bus_dmamem_free(t, sg, n) \
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|
(*(t)->_dmamem_free)((t), (sg), (n))
|
|
#define bus_dmamem_map(t, sg, n, s, k, f) \
|
|
(*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f))
|
|
#define bus_dmamem_unmap(t, k, s) \
|
|
(*(t)->_dmamem_unmap)((t), (k), (s))
|
|
#define bus_dmamem_mmap(t, sg, n, o, p, f) \
|
|
(*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f))
|
|
|
|
/*
|
|
* bus_dmamap_t
|
|
*
|
|
* Describes a DMA mapping.
|
|
*/
|
|
struct i386_bus_dmamap {
|
|
/*
|
|
* PRIVATE MEMBERS: not for use my machine-independent code.
|
|
*/
|
|
bus_size_t _dm_size; /* largest DMA transfer mappable */
|
|
int _dm_segcnt; /* number of segs this map can map */
|
|
bus_size_t _dm_maxsegsz; /* largest possible segment */
|
|
bus_size_t _dm_boundary; /* don't cross this */
|
|
int _dm_flags; /* misc. flags */
|
|
|
|
void *_dm_cookie; /* cookie for bus-specific functions */
|
|
|
|
/*
|
|
* PUBLIC MEMBERS: these are used by machine-independent code.
|
|
*/
|
|
int dm_nsegs; /* # valid segments in mapping */
|
|
bus_dma_segment_t dm_segs[1]; /* segments; variable length */
|
|
};
|
|
|
|
#ifdef _I386_BUS_DMA_PRIVATE
|
|
int _bus_dmamap_create __P((bus_dma_tag_t, bus_size_t, int, bus_size_t,
|
|
bus_size_t, int, bus_dmamap_t *));
|
|
void _bus_dmamap_destroy __P((bus_dma_tag_t, bus_dmamap_t));
|
|
int _bus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *,
|
|
bus_size_t, struct proc *, int));
|
|
int _bus_dmamap_load_mbuf __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct mbuf *, int));
|
|
int _bus_dmamap_load_uio __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct uio *, int));
|
|
int _bus_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_dma_segment_t *, int, bus_size_t, int));
|
|
void _bus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t));
|
|
void _bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_dmasync_op_t));
|
|
|
|
int _bus_dmamem_alloc __P((bus_dma_tag_t tag, bus_size_t size,
|
|
bus_size_t alignment, bus_size_t boundary,
|
|
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags));
|
|
void _bus_dmamem_free __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs));
|
|
int _bus_dmamem_map __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs, size_t size, caddr_t *kvap, int flags));
|
|
void _bus_dmamem_unmap __P((bus_dma_tag_t tag, caddr_t kva,
|
|
size_t size));
|
|
int _bus_dmamem_mmap __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs, int off, int prot, int flags));
|
|
|
|
int _bus_dmamem_alloc_range __P((bus_dma_tag_t tag, bus_size_t size,
|
|
bus_size_t alignment, bus_size_t boundary,
|
|
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags,
|
|
vm_offset_t low, vm_offset_t high));
|
|
#endif /* _I386_BUS_DMA_PRIVATE */
|
|
|
|
#endif /* _I386_BUS_H_ */
|