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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
66 static device_method_t  openpic_iobus_methods[] = {
67         /* Device interface */
68         DEVMETHOD(device_probe,         openpic_iobus_probe),
69         DEVMETHOD(device_attach,        openpic_attach),
70
71         /* PIC interface */
72         DEVMETHOD(pic_config,           openpic_config),
73         DEVMETHOD(pic_dispatch,         openpic_dispatch),
74         DEVMETHOD(pic_enable,           openpic_enable),
75         DEVMETHOD(pic_eoi,              openpic_eoi),
76         DEVMETHOD(pic_ipi,              openpic_ipi),
77         DEVMETHOD(pic_mask,             openpic_mask),
78         DEVMETHOD(pic_unmask,           openpic_unmask),
79
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, openpic_devclass, 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 }