openpic_ofw.c revision 256898 
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#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/powerpc/ofw/openpic_ofw.c 256898 2013-10-22 14:07:57Z nwhitehorn $");
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/module.h>
35#include <sys/bus.h>
36#include <sys/conf.h>
37#include <sys/kernel.h>
38
39#include <dev/ofw/ofw_bus.h>
40#include <dev/ofw/ofw_bus_subr.h>
41#include <dev/ofw/openfirm.h>
42
43#include <machine/bus.h>
44#include <machine/intr_machdep.h>
45#include <machine/md_var.h>
46#include <machine/pio.h>
47#include <machine/resource.h>
48
49#include <vm/vm.h>
50#include <vm/pmap.h>
51
52#include <sys/rman.h>
53
54#include <machine/openpicvar.h>
55
56#include "pic_if.h"
57
58/*
59 * OFW interface
60 */
61static int	openpic_ofw_probe(device_t);
62static int	openpic_ofw_attach(device_t);
63
64static device_method_t  openpic_ofw_methods[] = {
65	/* Device interface */
66	DEVMETHOD(device_probe,		openpic_ofw_probe),
67	DEVMETHOD(device_attach,	openpic_ofw_attach),
68
69	/* PIC interface */
70	DEVMETHOD(pic_bind,		openpic_bind),
71	DEVMETHOD(pic_config,		openpic_config),
72	DEVMETHOD(pic_dispatch,		openpic_dispatch),
73	DEVMETHOD(pic_enable,		openpic_enable),
74	DEVMETHOD(pic_eoi,		openpic_eoi),
75	DEVMETHOD(pic_ipi,		openpic_ipi),
76	DEVMETHOD(pic_mask,		openpic_mask),
77	DEVMETHOD(pic_unmask,		openpic_unmask),
78
79	DEVMETHOD_END
80};
81
82static driver_t openpic_ofw_driver = {
83	"openpic",
84	openpic_ofw_methods,
85	sizeof(struct openpic_softc),
86};
87
88DRIVER_MODULE(openpic, nexus, openpic_ofw_driver, openpic_devclass, 0, 0);
89DRIVER_MODULE(openpic, simplebus, openpic_ofw_driver, openpic_devclass, 0, 0);
90DRIVER_MODULE(openpic, macio, openpic_ofw_driver, openpic_devclass, 0, 0);
91
92static int
93openpic_ofw_probe(device_t dev)
94{
95	const char *type = ofw_bus_get_type(dev);
96
97	if (type == NULL)
98                return (ENXIO);
99
100	if (!ofw_bus_is_compatible(dev, "chrp,open-pic") &&
101	    strcmp(type, "open-pic") != 0)
102                return (ENXIO);
103
104	/*
105	 * On some U4 systems, there is a phantom MPIC in the mac-io cell.
106	 * The uninorth driver will pick up the real PIC, so ignore it here.
107	 */
108	if (OF_finddevice("/u4") != (phandle_t)-1)
109		return (ENXIO);
110
111	device_set_desc(dev, OPENPIC_DEVSTR);
112	return (0);
113}
114
115static int
116openpic_ofw_attach(device_t dev)
117{
118	phandle_t xref, node;
119
120	node = ofw_bus_get_node(dev);
121
122	if (OF_getprop(node, "phandle", &xref, sizeof(xref)) == -1 &&
123	    OF_getprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 &&
124	    OF_getprop(node, "linux,phandle", &xref, sizeof(xref)) == -1)
125		xref = node;
126
127	return (openpic_common_attach(dev, xref));
128}
129
130