1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright 2003 by Peter Grehan. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * 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
31 /*
32 * The psim iobus attachment for the OpenPIC interrupt controller.
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/module.h>
38 #include <sys/bus.h>
39 #include <sys/conf.h>
40 #include <sys/kernel.h>
41
42 #include <dev/ofw/openfirm.h>
43
44 #include <machine/bus.h>
45 #include <machine/intr_machdep.h>
46 #include <machine/md_var.h>
47 #include <machine/pio.h>
48 #include <machine/resource.h>
49
50 #include <vm/vm.h>
51 #include <vm/pmap.h>
52
53 #include <sys/rman.h>
54
55 #include <machine/openpicreg.h>
56 #include <machine/openpicvar.h>
57 #include <powerpc/psim/iobusvar.h>
58
59 #include "pic_if.h"
60
61 /*
62 * PSIM IOBus interface
63 */
64 static int openpic_iobus_probe(device_t);
65 static int openpic_iobus_attach(device_t);
66
67 static device_method_t openpic_iobus_methods[] = {
68 /* Device interface */
69 DEVMETHOD(device_probe, openpic_iobus_probe),
70 DEVMETHOD(device_attach, openpic_iobus_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 { 0, 0 }
81 };
82
83 static driver_t openpic_iobus_driver = {
84 "openpic",
85 openpic_iobus_methods,
86 sizeof(struct openpic_softc)
87 };
88
89 DRIVER_MODULE(openpic, iobus, openpic_iobus_driver, 0, 0);
90
91 static int
openpic_iobus_probe(device_t dev)92 openpic_iobus_probe(device_t dev)
93 {
94 struct openpic_softc *sc;
95 char *name;
96
97 name = iobus_get_name(dev);
98 if (strcmp(name, "interrupt-controller") != 0)
99 return (ENXIO);
100
101 /*
102 * The description was already printed out in the nexus
103 * probe, so don't do it again here
104 */
105 device_set_desc(dev, OPENPIC_DEVSTR);
106
107 sc = device_get_softc(dev);
108 sc->sc_psim = 1;
109
110 return (0);
111 }
112
113 static int
openpic_iobus_attach(device_t dev)114 openpic_iobus_attach(device_t dev)
115 {
116
117 return (openpic_common_attach(dev, 0));
118 }
119