source: rtems-libbsd/rtemsbsd/rtems/ofw_machdep.c @ c1205ee

5-freebsd-12
Last change on this file since c1205ee was c1205ee, checked in by Sebastian Huber <sebastian.huber@…>, on Mar 2, 2017 at 3:29:11 PM

FDT(4): Port to RTEMS

  • Property mode set to 100644
File size: 1.9 KB
Line 
1#include <machine/rtems-bsd-kernel-space.h>
2
3/*-
4 * Copyright (c) 2015 Ian Lepore <ian@freebsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/bus.h>
34
35#include <machine/bus.h>
36
37#include <dev/ofw/openfirm.h>
38#include <dev/ofw/ofw_subr.h>
39
40int
41OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag,
42    bus_space_handle_t *handle, bus_size_t *sz)
43{
44        bus_addr_t addr;
45        bus_size_t size;
46        int err;
47
48        err = ofw_reg_to_paddr(dev, regno, &addr, &size, NULL);
49        if (err != 0)
50                return (err);
51
52        *tag = 0;
53
54        if (sz != NULL)
55                *sz = size;
56
57        return (bus_space_map(*tag, addr, size, 0, handle));
58}
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