mirror of https://github.com/F-Stack/f-stack.git
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/*-
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* Copyright (c) 2015 Marcel Moolenaar
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* 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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*
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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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*
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <x86/bus.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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/*
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* Implementation of bus_space_map(), which effectively is a thin
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* wrapper around pmap_mapdev() for memory mapped I/O space. It's
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* implemented here and not in <x86/bus.h> to avoid pollution.
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*/
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int
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bus_space_map(bus_space_tag_t tag, bus_addr_t addr, bus_size_t size,
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int flags __unused, bus_space_handle_t *bshp)
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{
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*bshp = (tag == X86_BUS_SPACE_MEM)
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? (uintptr_t)pmap_mapdev(addr, size)
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: addr;
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return (0);
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}
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void
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bus_space_unmap(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size)
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{
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if (tag == X86_BUS_SPACE_MEM)
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pmap_unmapdev(bsh, size);
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}
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