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https://gitlab.eurecom.fr/oai/openairinterface5g.git
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0bcc3b3229
Add missing leap second offsert for UTC-to-GPS coversion. Signed-off-by: Bartosz Podrygajlo <bartosz.podrygajlo@openairinterface.org>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/*
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* SPDX-License-Identifier: LicenseRef-CSSL-1.0
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*/
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#ifndef FH_TIMER_H
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#define FH_TIMER_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <pthread.h>
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#include <rte_common.h>
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#include <rte_cycles.h>
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#include <rte_pause.h>
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#include <rte_eal.h>
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/**
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* @brief Callback for 5G symbol timer
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*
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* @param s_abs Absolute symbol number since GPS epoch
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* @param user_data User provided data pointer
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*/
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typedef void (*fh_timer_cb)(uint64_t s_abs, void *user_data);
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#define MAX_FH_TIMER_CBS 8
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#define GPS_EPOCH_OFFSET_UNIX 315964800ULL
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#define GPS_LEAP_SECONDS 18
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typedef struct {
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fh_timer_cb fn;
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void *user_data;
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} fh_timer_cb_entry_t;
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typedef struct fh_timer {
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int numerology;
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fh_timer_cb_entry_t cbs[MAX_FH_TIMER_CBS];
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int num_cbs;
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volatile bool running;
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rte_atomic64_t s_abs; // Current absolute symbol
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uint64_t ns_per_symbol;
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uint32_t symbols_per_frame;
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uint32_t slots_per_frame;
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// New state for passive tick
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uint64_t target_gps_ns;
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uint64_t next_s_abs;
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} fh_timer_t;
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/**
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* @brief Initialize the 5G symbol timer state.
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*
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* @param timer Pointer to timer handle to initialize
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* @param numerology 5G NR numerology (0, 1, 2, 3)
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* @return int 0 on success, negative on error
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*/
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int fh_timer_init(fh_timer_t *timer, int numerology);
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/**
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* @brief Register a callback to be executed every symbol.
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*
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* @param timer Pointer to timer handle
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* @param cb Callback function
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* @param user_data User provided data for callback
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* @return int 0 on success, negative if no space left
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*/
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int fh_timer_register_cb(fh_timer_t *timer, fh_timer_cb cb, void *user_data);
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/**
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* @brief Drive the 5G symbol timer by checking current time.
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* This should be called frequently (e.g. from an RX poll loop).
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*
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* @param timer Pointer to the initialized timer handle
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*/
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void fh_timer_tick(fh_timer_t *timer);
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/**
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* @brief Get a 5G time symbol.
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*
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* @param timer Pointer to timer handle
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*
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* @return Current absolute symbol number since GPS Epoch
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*/
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uint64_t fh_timer_get_current_symbol(fh_timer_t *timer);
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/**
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* @brief Stop the 5G symbol timer.
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*
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* @param timer Pointer to timer handle
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*/
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void fh_timer_stop(fh_timer_t *timer);
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#endif /* FH_TIMER_H */
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