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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#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;
}
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