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
|
/*-
* Copyright (c) 2010 Juli Mallett <jmallett@FreeBSD.org>
* 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 THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/clock.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <contrib/octeon-sdk/cvmx.h>
#include <contrib/octeon-sdk/cvmx-rtc.h>
#include "clock_if.h"
static int octeon_rtc_attach(device_t dev);
static int octeon_rtc_probe(device_t dev);
static int octeon_rtc_settime(device_t dev, struct timespec *ts);
static int octeon_rtc_gettime(device_t dev, struct timespec *ts);
static device_method_t octeon_rtc_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, octeon_rtc_probe),
DEVMETHOD(device_attach, octeon_rtc_attach),
/* clock interface */
DEVMETHOD(clock_gettime, octeon_rtc_gettime),
DEVMETHOD(clock_settime, octeon_rtc_settime),
{ 0, 0 }
};
static driver_t octeon_rtc_driver = {
"rtc",
octeon_rtc_methods,
0
};
static devclass_t octeon_rtc_devclass;
DRIVER_MODULE(rtc, nexus, octeon_rtc_driver, octeon_rtc_devclass, 0, 0);
static int
octeon_rtc_probe(device_t dev)
{
cvmx_rtc_options_t supported;
if (device_get_unit(dev) != 0)
return (ENXIO);
supported = cvmx_rtc_supported();
if (supported == 0)
return (ENXIO);
device_set_desc(dev, "Cavium Octeon Realtime Clock");
return (BUS_PROBE_NOWILDCARD);
}
static int
octeon_rtc_attach(device_t dev)
{
cvmx_rtc_options_t supported;
supported = cvmx_rtc_supported();
if ((supported & CVMX_RTC_READ) == 0)
return (ENXIO);
clock_register(dev, 1000000);
return (0);
}
static int
octeon_rtc_settime(device_t dev, struct timespec *ts)
{
cvmx_rtc_options_t supported;
uint32_t status;
supported = cvmx_rtc_supported();
if ((supported & CVMX_RTC_WRITE) == 0)
return (ENOTSUP);
status = cvmx_rtc_write(ts->tv_sec);
if (status != 0)
return (EINVAL);
return (0);
}
static int
octeon_rtc_gettime(device_t dev, struct timespec *ts)
{
uint32_t secs;
secs = cvmx_rtc_read();
if (secs == 0)
return (ENOTSUP);
ts->tv_sec = secs;
ts->tv_nsec = 0;
return (0);
}
|
