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
|
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel Corporation 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <errno.h>
#include <rte_common.h>
#include <rte_log.h>
#include <rte_cycles.h>
#include <rte_memory.h>
#include <rte_eal.h>
#include <rte_debug.h>
#include "eal_private.h"
#include "eal_internal_cfg.h"
#ifdef RTE_LIBEAL_USE_HPET
#warning HPET is not supported in FreeBSD
#endif
enum timer_source eal_timer_source = EAL_TIMER_TSC;
uint64_t
get_tsc_freq(void)
{
size_t sz;
int tmp;
uint64_t tsc_hz;
sz = sizeof(tmp);
tmp = 0;
if (sysctlbyname("kern.timecounter.smp_tsc", &tmp, &sz, NULL, 0))
RTE_LOG(WARNING, EAL, "%s\n", strerror(errno));
else if (tmp != 1)
RTE_LOG(WARNING, EAL, "TSC is not safe to use in SMP mode\n");
tmp = 0;
if (sysctlbyname("kern.timecounter.invariant_tsc", &tmp, &sz, NULL, 0))
RTE_LOG(WARNING, EAL, "%s\n", strerror(errno));
else if (tmp != 1)
RTE_LOG(WARNING, EAL, "TSC is not invariant\n");
sz = sizeof(tsc_hz);
if (sysctlbyname("machdep.tsc_freq", &tsc_hz, &sz, NULL, 0)) {
RTE_LOG(WARNING, EAL, "%s\n", strerror(errno));
return 0;
}
return tsc_hz;
}
int
rte_eal_timer_init(void)
{
set_tsc_freq();
return 0;
}
|
