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/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33 #include <sys/conf.h>
34 #include <sys/kernel.h>
35 #include <sys/lock.h>
36 #include <sys/mbuf.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
39 #include <sys/mutex.h>
40 #include <sys/rman.h>
41 #include <machine/bus.h>
42
43 #ifdef FDT
44 #include <dev/ofw/ofw_bus.h>
45 #include <dev/ofw/ofw_bus_subr.h>
46 #endif
47
48 struct powernv_centaur_softc
49 {
50
51 };
52
53 static int powernv_centaur_attach(device_t);
54 static int powernv_centaur_probe(device_t);
55 static const struct ofw_bus_devinfo *
56 powernv_centaur_get_devinfo(device_t, device_t);
57
58 static device_method_t powernv_centaur_methods[] = {
59 /* Device interface */
60 DEVMETHOD(device_probe, powernv_centaur_probe),
61 DEVMETHOD(device_attach, powernv_centaur_attach),
62
63 /* ofw_bus interface */
64 DEVMETHOD(ofw_bus_get_devinfo, powernv_centaur_get_devinfo),
65 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
66 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
67 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
68 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
69 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
70
71 DEVMETHOD_END
72 };
73
74 static int
powernv_centaur_probe(device_t dev)75 powernv_centaur_probe(device_t dev)
76 {
77
78 if (!(ofw_bus_is_compatible(dev, "ibm,centaur")))
79 return (ENXIO);
80
81 device_set_desc(dev, "centaur");
82 return (0);
83 }
84
85 static int
powernv_centaur_attach(device_t dev)86 powernv_centaur_attach(device_t dev)
87 {
88 phandle_t child;
89 device_t cdev;
90 struct ofw_bus_devinfo *dinfo;
91
92 for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
93 child = OF_peer(child)) {
94 dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
95 if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
96 free(dinfo, M_DEVBUF);
97 continue;
98 }
99 cdev = device_add_child(dev, NULL, DEVICE_UNIT_ANY);
100 if (cdev == NULL) {
101 device_printf(dev, "<%s>: device_add_child failed\n",
102 dinfo->obd_name);
103 ofw_bus_gen_destroy_devinfo(dinfo);
104 free(dinfo, M_DEVBUF);
105 continue;
106 }
107 device_set_ivars(cdev, dinfo);
108 }
109
110 bus_attach_children(dev);
111 return (0);
112 }
113
114 static const struct ofw_bus_devinfo *
powernv_centaur_get_devinfo(device_t dev,device_t child)115 powernv_centaur_get_devinfo(device_t dev, device_t child)
116 {
117 return (device_get_ivars(child));
118 }
119
120 DEFINE_CLASS_0(powernv_centaur, powernv_centaur_driver, powernv_centaur_methods,
121 sizeof(struct powernv_centaur_softc));
122 DRIVER_MODULE(powernv_centaur, ofwbus, powernv_centaur_driver, NULL, NULL);
123