xref: /freebsd/sys/powerpc/psim/openpic_iobus.c (revision 6137b5f7b8c183ee8806d79b3f1d8e5e3ddb3df3)
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
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
114 openpic_iobus_attach(device_t dev)
115 {
116 
117 	return (openpic_common_attach(dev, 0));
118 }
119