1/*-
2 * Copyright (c) 2015 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <x86/bus.h>
33
34#include <vm/vm.h>
35#include <vm/pmap.h>
36
37/*
38 * Implementation of bus_space_map(), which effectively is a thin
39 * wrapper around pmap_mapdev() for memory mapped I/O space. It's
40 * implemented here and not in <x86/bus.h> to avoid pollution.
41 */
42int
43bus_space_map(bus_space_tag_t tag, bus_addr_t addr, bus_size_t size,
44    int flags __unused, bus_space_handle_t *bshp)
45{
46
47	*bshp = (tag == X86_BUS_SPACE_MEM)
48	    ? (uintptr_t)pmap_mapdev(addr, size)
49	    : addr;
50	return (0);
51}
52
53void
54bus_space_unmap(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size)
55{
56
57	if (tag == X86_BUS_SPACE_MEM)
58		pmap_unmapdev(bsh, size);
59}
60