openpic_iobus.c revision 183882 
1/*-
2 * Copyright 2003 by Peter Grehan. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
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,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29/*
30 * The psim iobus attachment for the OpenPIC interrupt controller.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/powerpc/psim/openpic_iobus.c 183882 2008-10-14 14:54:14Z nwhitehorn $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/module.h>
39#include <sys/bus.h>
40#include <sys/conf.h>
41#include <sys/kernel.h>
42
43#include <dev/ofw/openfirm.h>
44
45#include <machine/bus.h>
46#include <machine/intr.h>
47#include <machine/intr_machdep.h>
48#include <machine/md_var.h>
49#include <machine/pio.h>
50#include <machine/resource.h>
51
52#include <vm/vm.h>
53#include <vm/pmap.h>
54
55#include <sys/rman.h>
56
57#include <machine/openpicvar.h>
58#include <powerpc/psim/iobusvar.h>
59
60#include "pic_if.h"
61
62/*
63 * PSIM IOBus interface
64 */
65static int	openpic_iobus_probe(device_t);
66
67static device_method_t  openpic_iobus_methods[] = {
68	/* Device interface */
69	DEVMETHOD(device_probe,		openpic_iobus_probe),
70	DEVMETHOD(device_attach,	openpic_attach),
71
72	/* PIC interface */
73	DEVMETHOD(pic_config,		openpic_config),
74	DEVMETHOD(pic_dispatch,		openpic_dispatch),
75	DEVMETHOD(pic_enable,		openpic_enable),
76	DEVMETHOD(pic_eoi,		openpic_eoi),
77	DEVMETHOD(pic_ipi,		openpic_ipi),
78	DEVMETHOD(pic_mask,		openpic_mask),
79	DEVMETHOD(pic_unmask,		openpic_unmask),
80
81	{ 0, 0 }
82};
83
84static driver_t openpic_iobus_driver = {
85	"openpic",
86	openpic_iobus_methods,
87	sizeof(struct openpic_softc)
88};
89
90DRIVER_MODULE(openpic, iobus, openpic_iobus_driver, openpic_devclass, 0, 0);
91
92static int
93openpic_iobus_probe(device_t dev)
94{
95	struct openpic_softc *sc;
96	char *name;
97
98	name = iobus_get_name(dev);
99	if (strcmp(name, "interrupt-controller") != 0)
100		return (ENXIO);
101
102	/*
103	 * The description was already printed out in the nexus
104	 * probe, so don't do it again here
105	 */
106	device_set_desc(dev, OPENPIC_DEVSTR);
107
108	sc = device_get_softc(dev);
109	sc->sc_psim = 1;
110
111	return (0);
112}
113