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1 /*-
2  * Copyright 2006 by Juniper Networks. 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 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/bus.h>
37 #include <sys/rman.h>
38 #include <sys/bus.h>
39
40 #include <machine/bus.h>
41 #include <machine/intr.h>
42 #include <machine/intr_machdep.h>
43 #include <machine/openpicvar.h>
44 #include <machine/ocpbus.h>
45
46 #include "pic_if.h"
47
48 /*
49  * OpenPIC attachment to ocpbus
50  */
51 static int      openpic_ocpbus_probe(device_t);
52
53 static device_method_t  openpic_ocpbus_methods[] = {
54         /* Device interface */
55         DEVMETHOD(device_probe,         openpic_ocpbus_probe),
56         DEVMETHOD(device_attach,        openpic_attach),
57
58         /* PIC interface */
59         DEVMETHOD(pic_config,           openpic_config),
60         DEVMETHOD(pic_dispatch,         openpic_dispatch),
61         DEVMETHOD(pic_enable,           openpic_enable),
62         DEVMETHOD(pic_eoi,              openpic_eoi),
63         DEVMETHOD(pic_ipi,              openpic_ipi),
64         DEVMETHOD(pic_mask,             openpic_mask),
65         DEVMETHOD(pic_unmask,           openpic_unmask),
66
67         { 0, 0 },
68 };
69
70 static driver_t openpic_ocpbus_driver = {
71         "openpic",
72         openpic_ocpbus_methods,
73         sizeof(struct openpic_softc)
74 };
75
76 DRIVER_MODULE(openpic, ocpbus, openpic_ocpbus_driver, openpic_devclass, 0, 0);
77
78 static int
79 openpic_ocpbus_probe (device_t dev)
80 {
81         device_t parent;
82         uintptr_t devtype;
83         int error;
84
85         parent = device_get_parent(dev);
86
87         error = BUS_READ_IVAR(parent, dev, OCPBUS_IVAR_DEVTYPE, &devtype);
88         if (error)
89                 return (error);
90         if (devtype != OCPBUS_DEVTYPE_PIC)
91                 return (ENXIO);
92
93         device_set_desc(dev, OPENPIC_DEVSTR);
94         return (BUS_PROBE_DEFAULT);
95 }