event/octeontx2: update start timestamp periodically

[dpdk.git] / drivers / event / octeontx2 / otx2_tim_worker.c

diff --git a/drivers/event/octeontx2/otx2_tim_worker.c b/drivers/event/octeontx2/otx2_tim_worker.c
index feba61c..104674c 100644 (file)
--- a/drivers/event/octeontx2/otx2_tim_worker.c
+++ b/drivers/event/octeontx2/otx2_tim_worker.c
@@ -38,6 +38,23 @@ tim_format_event(const struct rte_event_timer * const tim,
        entry->wqe = tim->ev.u64;
 }
 
+static inline void
+tim_sync_start_cyc(struct otx2_tim_ring *tim_ring)
+{
+       uint64_t cur_cyc = rte_rdtsc();
+       uint32_t real_bkt;
+
+       if (cur_cyc - tim_ring->last_updt_cyc > tim_ring->tot_int) {
+               real_bkt = otx2_read64(tim_ring->base + TIM_LF_RING_REL) >> 44;
+               cur_cyc = rte_rdtsc();
+
+               tim_ring->ring_start_cyc = cur_cyc -
+                                               (real_bkt * tim_ring->tck_int);
+               tim_ring->last_updt_cyc = cur_cyc;
+       }
+
+}
+
 static __rte_always_inline uint16_t
 tim_timer_arm_burst(const struct rte_event_timer_adapter *adptr,
                    struct rte_event_timer **tim,
@@ -49,6 +66,7 @@ tim_timer_arm_burst(const struct rte_event_timer_adapter *adptr,
        uint16_t index;
        int ret;
 
+       tim_sync_start_cyc(tim_ring);
        for (index = 0; index < nb_timers; index++) {
                if (tim_arm_checks(tim_ring, tim[index]))
                        break;
@@ -99,6 +117,7 @@ tim_timer_arm_tmo_brst(const struct rte_event_timer_adapter *adptr,
                return 0;
        }
 
+       tim_sync_start_cyc(tim_ring);
        while (arr_idx < nb_timers) {
                for (idx = 0; idx < OTX2_TIM_MAX_BURST && (arr_idx < nb_timers);
                     idx++, arr_idx++) {