xref: /freebsd/sys/powerpc/psim/openpic_iobus.c (revision 8d20be1e22095c27faf8fe8b2f0d089739cc742e)
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("$FreeBSD$");
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_machdep.h>
47 #include <machine/md_var.h>
48 #include <machine/pio.h>
49 #include <machine/resource.h>
50 
51 #include <vm/vm.h>
52 #include <vm/pmap.h>
53 
54 #include <sys/rman.h>
55 
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 
81 	{ 0, 0 }
82 };
83 
84 static driver_t openpic_iobus_driver = {
85 	"openpic",
86 	openpic_iobus_methods,
87 	sizeof(struct openpic_softc)
88 };
89 
90 DRIVER_MODULE(openpic, iobus, openpic_iobus_driver, openpic_devclass, 0, 0);
91 
92 static int
93 openpic_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 
114 static int
115 openpic_iobus_attach(device_t dev)
116 {
117 
118 	return (openpic_common_attach(dev, 0));
119 }
120