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/* Copyright (c) 2013, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <odp_time.h>
#include <odp_hints.h>
#include <odp_system_info.h>
#include <odp_debug.h>
#if defined __x86_64__ || defined __i386__
uint64_t odp_time_get_cycles(void)
{
union {
uint64_t tsc_64;
struct {
uint32_t lo_32;
uint32_t hi_32;
};
} tsc;
asm volatile("rdtsc" :
"=a" (tsc.lo_32),
"=d" (tsc.hi_32) : : "memory");
return tsc.tsc_64;
}
#elif defined __OCTEON__
uint64_t odp_time_get_cycles(void)
{
#define CVMX_TMP_STR(x) CVMX_TMP_STR2(x)
#define CVMX_TMP_STR2(x) #x
uint64_t cycle;
asm __volatile__ ("rdhwr %[rt],$" CVMX_TMP_STR(31) :
[rt] "=d" (cycle) : : "memory");
return cycle;
}
#else
#include <time.h>
#include <stdlib.h>
uint64_t odp_time_get_cycles(void)
{
struct timespec time;
uint64_t sec, ns, hz, cycles;
int ret;
ret = clock_gettime(CLOCK_MONOTONIC_RAW, &time);
if (ret != 0) {
ODP_ERR("clock_gettime failed\n");
exit(EXIT_FAILURE);
}
hz = odp_sys_cpu_hz();
sec = (uint64_t) time.tv_sec;
ns = (uint64_t) time.tv_nsec;
cycles = sec * hz;
cycles += (ns * hz) / 1000000000;
return cycles;
}
#endif
uint64_t odp_time_diff_cycles(uint64_t t1, uint64_t t2)
{
if (odp_likely(t2 > t1))
return t2 - t1;
return t2 + (UINT64_MAX - t1);
}
uint64_t odp_time_cycles_to_ns(uint64_t cycles)
{
uint64_t hz = odp_sys_cpu_hz();
if (cycles > hz)
return 1000000000*(cycles/hz);
return (1000000000*cycles)/hz;
}
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