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
|
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1994 Gordon W. Ross
* Copyright (c) 1993 Adam Glass
* Copyright (c) 1996 Paul Kranenburg
* Copyright (c) 1996
* The President and Fellows of Harvard College. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Harvard University.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* This product includes software developed by Harvard University.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
*
* from: @(#)clock.c 8.1 (Berkeley) 6/11/93
* from: NetBSD: clock.c,v 1.41 2001/07/24 19:29:25 eeh Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* clock (eeprom) attaches at EBus, FireHose or SBus
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <dev/ofw/ofw_bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <machine/ver.h>
#include <sys/rman.h>
#include <dev/mk48txx/mk48txxvar.h>
#include "clock_if.h"
static devclass_t eeprom_devclass;
static device_probe_t eeprom_probe;
static device_attach_t eeprom_attach;
static device_method_t eeprom_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, eeprom_probe),
DEVMETHOD(device_attach, eeprom_attach),
/* clock interface */
DEVMETHOD(clock_gettime, mk48txx_gettime),
DEVMETHOD(clock_settime, mk48txx_settime),
KOBJMETHOD_END
};
static driver_t eeprom_driver = {
"eeprom",
eeprom_methods,
sizeof(struct mk48txx_softc),
};
DRIVER_MODULE(eeprom, ebus, eeprom_driver, eeprom_devclass, 0, 0);
DRIVER_MODULE(eeprom, fhc, eeprom_driver, eeprom_devclass, 0, 0);
DRIVER_MODULE(eeprom, sbus, eeprom_driver, eeprom_devclass, 0, 0);
static int
eeprom_probe(device_t dev)
{
if (strcmp("eeprom", ofw_bus_get_name(dev)) == 0) {
device_set_desc(dev, "EEPROM/clock");
return (0);
}
return (ENXIO);
}
static int
eeprom_attach(device_t dev)
{
struct mk48txx_softc *sc;
struct resource *res;
struct timespec ts;
int error, rid;
sc = device_get_softc(dev);
mtx_init(&sc->sc_mtx, "eeprom_mtx", NULL, MTX_DEF);
rid = 0;
res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (res == NULL) {
device_printf(dev, "cannot allocate resources\n");
error = ENXIO;
goto fail_mtx;
}
sc->sc_bst = rman_get_bustag(res);
sc->sc_bsh = rman_get_bushandle(res);
if ((sc->sc_model = ofw_bus_get_model(dev)) == NULL) {
device_printf(dev, "cannot determine model\n");
error = ENXIO;
goto fail_res;
}
/* Our TOD clock year 0 is 1968. */
sc->sc_year0 = 1968;
/* Use default register read/write functions. */
sc->sc_flag = 0;
/*
* Generally, if the `eeprom' node has a `watchdog-enable' property
* this indicates that the watchdog part of the MK48T59 is usable,
* i.e. its RST pin is connected to the WDR input of the CPUs or
* something. The `eeprom' nodes of E250, E450 and the clock board
* variant in Exx00 have such properties. For E250 and E450 the
* watchdog just works, for Exx00 the delivery of the reset signal
* apparently has to be additionally enabled elsewhere...
* The OFW environment variable `watchdog-reboot?' is ignored for
* these watchdogs as they always trigger a system reset when they
* time out and can't be made to issue a break to the boot monitor
* instead.
*/
if (OF_getproplen(ofw_bus_get_node(dev), "watchdog-enable") != -1 &&
(strcmp(sparc64_model, "SUNW,Ultra-250") == 0 ||
strcmp(sparc64_model, "SUNW,Ultra-4") == 0))
sc->sc_flag |= MK48TXX_WDOG_REGISTER | MK48TXX_WDOG_ENABLE_WDS;
if ((error = mk48txx_attach(dev)) != 0) {
device_printf(dev, "cannot attach time of day clock\n");
goto fail_res;
}
if (bootverbose) {
if (mk48txx_gettime(dev, &ts) != 0)
device_printf(dev, "invalid time");
else
device_printf(dev, "current time: %ld.%09ld\n",
(long)ts.tv_sec, ts.tv_nsec);
}
return (0);
fail_res:
bus_release_resource(dev, SYS_RES_MEMORY, rid, res);
fail_mtx:
mtx_destroy(&sc->sc_mtx);
return (error);
}
|
