diff options
Diffstat (limited to 'platform/linux-generic/arch/common/odp_time_cpu.c')
-rw-r--r-- | platform/linux-generic/arch/common/odp_time_cpu.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/platform/linux-generic/arch/common/odp_time_cpu.c b/platform/linux-generic/arch/common/odp_time_cpu.c new file mode 100644 index 000000000..6416f5575 --- /dev/null +++ b/platform/linux-generic/arch/common/odp_time_cpu.c @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright (c) 2013-2018 Linaro Limited + * Copyright (c) 2020-2023 Nokia + */ + +#include <odp/api/time_types.h> + +#include <odp/api/abi/time_cpu.h> +#include <odp/api/abi/time_cpu_inlines.h> + +#include <odp_debug_internal.h> +#include <odp_init_internal.h> + +#include <inttypes.h> +#include <stdint.h> +#include <string.h> + +#define YEAR_IN_SEC (365 * 24 * 3600) + +#include <odp/visibility_begin.h> + +_odp_time_global_t _odp_time_glob; + +#include <odp/visibility_end.h> + +int _odp_time_init_global(void) +{ + uint64_t count, diff, years; + odp_time_t time; + _odp_time_global_t *global = &_odp_time_glob; + + memset(global, 0, sizeof(_odp_time_global_t)); + + if (!_odp_time_cpu_global_freq_is_const()) + return -1; + + global->freq_hz = _odp_time_cpu_global_freq(); + if (global->freq_hz == 0) + return -1; + + _ODP_PRINT("HW time counter freq: %" PRIu64 " hz\n\n", global->freq_hz); + + count = _odp_time_cpu_global(); + time.count = count; + global->start_time = count; + global->start_time_ns = _odp_time_to_ns(time); + + /* Make sure that counters will not wrap */ + diff = UINT64_MAX - count; + years = (diff / global->freq_hz) / YEAR_IN_SEC; + + if (years < 10) { + _ODP_ERR("Time counter would wrap in 10 years: %" PRIu64 "\n", count); + return -1; + } + + diff = UINT64_MAX - global->start_time_ns; + years = (diff / ODP_TIME_SEC_IN_NS) / YEAR_IN_SEC; + + if (years < 10) { + _ODP_ERR("Time in nsec would wrap in 10 years: %" PRIu64 "\n", + global->start_time_ns); + return -1; + } + + return 0; +} + +int _odp_time_term_global(void) +{ + return 0; +} |