1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*-
* Copyright (C) 2009 Nathan Whitehorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <machine/bus.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
static int ofw_cpulist_probe(device_t);
static int ofw_cpulist_attach(device_t);
static const struct ofw_bus_devinfo *ofw_cpulist_get_devinfo(device_t dev,
device_t child);
static MALLOC_DEFINE(M_OFWCPU, "ofwcpu", "OFW CPU device information");
static device_method_t ofw_cpulist_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ofw_cpulist_probe),
DEVMETHOD(device_attach, ofw_cpulist_attach),
/* Bus interface */
DEVMETHOD(bus_add_child, bus_generic_add_child),
DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_devinfo, ofw_cpulist_get_devinfo),
DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
DEVMETHOD_END
};
static driver_t ofw_cpulist_driver = {
"cpulist",
ofw_cpulist_methods,
0
};
static devclass_t ofw_cpulist_devclass;
DRIVER_MODULE(ofw_cpulist, ofwbus, ofw_cpulist_driver, ofw_cpulist_devclass,
0, 0);
static int
ofw_cpulist_probe(device_t dev)
{
const char *name;
name = ofw_bus_get_name(dev);
if (name == NULL || strcmp(name, "cpus") != 0)
return (ENXIO);
device_set_desc(dev, "Open Firmware CPU Group");
return (0);
}
static int
ofw_cpulist_attach(device_t dev)
{
phandle_t root, child;
device_t cdev;
struct ofw_bus_devinfo *dinfo;
root = ofw_bus_get_node(dev);
for (child = OF_child(root); child != 0; child = OF_peer(child)) {
dinfo = malloc(sizeof(*dinfo), M_OFWCPU, M_WAITOK | M_ZERO);
if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
free(dinfo, M_OFWCPU);
continue;
}
cdev = device_add_child(dev, NULL, -1);
if (cdev == NULL) {
device_printf(dev, "<%s>: device_add_child failed\n",
dinfo->obd_name);
ofw_bus_gen_destroy_devinfo(dinfo);
free(dinfo, M_OFWCPU);
continue;
}
device_set_ivars(cdev, dinfo);
}
return (bus_generic_attach(dev));
}
static const struct ofw_bus_devinfo *
ofw_cpulist_get_devinfo(device_t dev, device_t child)
{
return (device_get_ivars(child));
}
static int ofw_cpu_probe(device_t);
static int ofw_cpu_attach(device_t);
static int ofw_cpu_read_ivar(device_t dev, device_t child, int index,
uintptr_t *result);
struct ofw_cpu_softc {
struct pcpu *sc_cpu_pcpu;
uint32_t sc_nominal_mhz;
};
static device_method_t ofw_cpu_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ofw_cpu_probe),
DEVMETHOD(device_attach, ofw_cpu_attach),
/* Bus interface */
DEVMETHOD(bus_add_child, bus_generic_add_child),
DEVMETHOD(bus_read_ivar, ofw_cpu_read_ivar),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource,bus_generic_activate_resource),
DEVMETHOD_END
};
static driver_t ofw_cpu_driver = {
"cpu",
ofw_cpu_methods,
sizeof(struct ofw_cpu_softc)
};
static devclass_t ofw_cpu_devclass;
DRIVER_MODULE(ofw_cpu, cpulist, ofw_cpu_driver, ofw_cpu_devclass, 0, 0);
static int
ofw_cpu_probe(device_t dev)
{
const char *type = ofw_bus_get_type(dev);
if (type == NULL || strcmp(type, "cpu") != 0)
return (ENXIO);
device_set_desc(dev, "Open Firmware CPU");
return (0);
}
static int
ofw_cpu_attach(device_t dev)
{
struct ofw_cpu_softc *sc;
phandle_t node;
uint32_t cell;
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
if (OF_getencprop(node, "reg", &cell, sizeof(cell)) < 0) {
cell = device_get_unit(dev);
device_printf(dev, "missing 'reg' property, using %u\n", cell);
}
sc->sc_cpu_pcpu = pcpu_find(cell);
if (OF_getencprop(node, "clock-frequency", &cell, sizeof(cell)) < 0) {
device_printf(dev, "missing 'clock-frequency' property\n");
return (ENXIO);
}
sc->sc_nominal_mhz = cell / 1000000; /* convert to MHz */
bus_generic_probe(dev);
return (bus_generic_attach(dev));
}
static int
ofw_cpu_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
{
struct ofw_cpu_softc *sc;
sc = device_get_softc(dev);
switch (index) {
case CPU_IVAR_PCPU:
*result = (uintptr_t)sc->sc_cpu_pcpu;
return (0);
case CPU_IVAR_NOMINAL_MHZ:
*result = (uintptr_t)sc->sc_nominal_mhz;
return (0);
}
return (ENOENT);
}
|
