1 /*-
2 * Copyright (c) 2017-2018 QCM Technologies.
3 * Copyright (c) 2017-2018 Semihalf.
4 * 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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, 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 #include "opt_platform.h"
29
30 #include <sys/cdefs.h>
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/bus.h>
34 #include <sys/conf.h>
35 #include <sys/kernel.h>
36 #include <sys/lock.h>
37 #include <sys/mbuf.h>
38 #include <sys/malloc.h>
39 #include <sys/module.h>
40 #include <sys/mutex.h>
41 #include <sys/rman.h>
42 #include <machine/bus.h>
43
44 #ifdef FDT
45 #include <dev/ofw/ofw_bus.h>
46 #include <dev/ofw/ofw_bus_subr.h>
47 #endif
48
49 struct powernv_centaur_softc
50 {
51
52 };
53
54 static int powernv_centaur_attach(device_t);
55 static int powernv_centaur_probe(device_t);
56 static const struct ofw_bus_devinfo *
57 powernv_centaur_get_devinfo(device_t, device_t);
58
59 static device_method_t powernv_centaur_methods[] = {
60 /* Device interface */
61 DEVMETHOD(device_probe, powernv_centaur_probe),
62 DEVMETHOD(device_attach, powernv_centaur_attach),
63
64 /* ofw_bus interface */
65 DEVMETHOD(ofw_bus_get_devinfo, powernv_centaur_get_devinfo),
66 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
67 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
68 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
69 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
70 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
71
72 DEVMETHOD_END
73 };
74
75 static devclass_t powernv_centaur_devclass;
76
77 static int
powernv_centaur_probe(device_t dev)78 powernv_centaur_probe(device_t dev)
79 {
80
81 if (!(ofw_bus_is_compatible(dev, "ibm,centaur")))
82 return (ENXIO);
83
84 device_set_desc(dev, "centaur");
85 return (0);
86 }
87
88 static int
powernv_centaur_attach(device_t dev)89 powernv_centaur_attach(device_t dev)
90 {
91 phandle_t child;
92 device_t cdev;
93 struct ofw_bus_devinfo *dinfo;
94
95 for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
96 child = OF_peer(child)) {
97 dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
98 if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
99 free(dinfo, M_DEVBUF);
100 continue;
101 }
102 cdev = device_add_child(dev, NULL, -1);
103 if (cdev == NULL) {
104 device_printf(dev, "<%s>: device_add_child failed\n",
105 dinfo->obd_name);
106 ofw_bus_gen_destroy_devinfo(dinfo);
107 free(dinfo, M_DEVBUF);
108 continue;
109 }
110 device_set_ivars(cdev, dinfo);
111 }
112
113 return (bus_generic_attach(dev));
114 }
115
116 static const struct ofw_bus_devinfo *
powernv_centaur_get_devinfo(device_t dev,device_t child)117 powernv_centaur_get_devinfo(device_t dev, device_t child)
118 {
119 return (device_get_ivars(child));
120 }
121
122 DEFINE_CLASS_0(powernv_centaur, powernv_centaur_driver, powernv_centaur_methods,
123 sizeof(struct powernv_centaur_softc));
124 DRIVER_MODULE(powernv_centaur, ofwbus, powernv_centaur_driver, powernv_centaur_devclass, NULL,
125 NULL);
126