fdt_mips.c revision 257522 
1/*-
2 * Copyright (c) 2009-2010 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Semihalf under sponsorship from
6 * the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: stable/10/sys/dev/fdt/fdt_mips.c 257522 2013-11-01 20:28:13Z brooks $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37#include <sys/bus.h>
38
39#include <machine/intr_machdep.h>
40
41#include <dev/ofw/ofw_bus.h>
42#include <dev/ofw/ofw_bus_subr.h>
43#include <dev/ofw/openfirm.h>
44
45#include "ofw_bus_if.h"
46#include "fdt_common.h"
47
48struct fdt_fixup_entry fdt_fixup_table[] = {
49	{ NULL, NULL }
50};
51
52/*
53 * For PIC-free boards, provide a PIC decoder to be used with mips4k CP0
54 * interrupt control directly.
55 */
56static int
57fdt_pic_decode_mips4k_cp0(phandle_t node, pcell_t *intr, int *interrupt,
58    int *trig, int *pol)
59{
60
61	if (!fdt_is_compatible(node, "mips,mips4k"))
62		return (ENXIO);
63
64	*interrupt = fdt32_to_cpu(intr[0]);
65	*trig = INTR_TRIGGER_CONFORM;
66	*pol = INTR_POLARITY_CONFORM;
67
68	return (0);
69}
70
71/*
72 * CHERI PIC decoder.
73 */
74static int
75fdt_pic_decode_beri(phandle_t node, pcell_t *intr, int *interrupt,
76    int *trig, int *pol)
77{
78
79	if (!fdt_is_compatible(node, "sri-cambridge,beri-pic"))
80		return (ENXIO);
81
82	*interrupt = fdt32_to_cpu(intr[0]);
83	*trig = INTR_TRIGGER_CONFORM;
84	*pol = INTR_POLARITY_CONFORM;
85
86	return (0);
87}
88
89fdt_pic_decode_t fdt_pic_table[] = {
90	&fdt_pic_decode_mips4k_cp0,
91	&fdt_pic_decode_beri,
92	NULL
93};
94