event/cnxk: add timer adapter start and stop

Add event timer adapter start and stop functions.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Signed-off-by: Shijith Thotton <sthotton@marvell.com>

diff --git a/drivers/event/cnxk/cnxk_tim_evdev.c b/drivers/event/cnxk/cnxk_tim_evdev.c
index a73ca33..19b71b4 100644 (file)
--- a/drivers/event/cnxk/cnxk_tim_evdev.c
+++ b/drivers/event/cnxk/cnxk_tim_evdev.c
@@ -246,6 +246,73 @@ cnxk_tim_ring_free(struct rte_event_timer_adapter *adptr)
        return 0;
 }
 
+static void
+cnxk_tim_calibrate_start_tsc(struct cnxk_tim_ring *tim_ring)
+{
+#define CNXK_TIM_CALIB_ITER 1E6
+       uint32_t real_bkt, bucket;
+       int icount, ecount = 0;
+       uint64_t bkt_cyc;
+
+       for (icount = 0; icount < CNXK_TIM_CALIB_ITER; icount++) {
+               real_bkt = plt_read64(tim_ring->base + TIM_LF_RING_REL) >> 44;
+               bkt_cyc = cnxk_tim_cntvct();
+               bucket = (bkt_cyc - tim_ring->ring_start_cyc) /
+                        tim_ring->tck_int;
+               bucket = bucket % (tim_ring->nb_bkts);
+               tim_ring->ring_start_cyc =
+                       bkt_cyc - (real_bkt * tim_ring->tck_int);
+               if (bucket != real_bkt)
+                       ecount++;
+       }
+       tim_ring->last_updt_cyc = bkt_cyc;
+       plt_tim_dbg("Bucket mispredict %3.2f distance %d\n",
+                   100 - (((double)(icount - ecount) / (double)icount) * 100),
+                   bucket - real_bkt);
+}
+
+static int
+cnxk_tim_ring_start(const struct rte_event_timer_adapter *adptr)
+{
+       struct cnxk_tim_ring *tim_ring = adptr->data->adapter_priv;
+       struct cnxk_tim_evdev *dev = cnxk_tim_priv_get();
+       int rc;
+
+       if (dev == NULL)
+               return -ENODEV;
+
+       rc = roc_tim_lf_enable(&dev->tim, tim_ring->ring_id,
+                              &tim_ring->ring_start_cyc, NULL);
+       if (rc < 0)
+               return rc;
+
+       tim_ring->tck_int = NSEC2TICK(tim_ring->tck_nsec, cnxk_tim_cntfrq());
+       tim_ring->tot_int = tim_ring->tck_int * tim_ring->nb_bkts;
+       tim_ring->fast_div = rte_reciprocal_value_u64(tim_ring->tck_int);
+       tim_ring->fast_bkt = rte_reciprocal_value_u64(tim_ring->nb_bkts);
+
+       cnxk_tim_calibrate_start_tsc(tim_ring);
+
+       return rc;
+}
+
+static int
+cnxk_tim_ring_stop(const struct rte_event_timer_adapter *adptr)
+{
+       struct cnxk_tim_ring *tim_ring = adptr->data->adapter_priv;
+       struct cnxk_tim_evdev *dev = cnxk_tim_priv_get();
+       int rc;
+
+       if (dev == NULL)
+               return -ENODEV;
+
+       rc = roc_tim_lf_disable(&dev->tim, tim_ring->ring_id);
+       if (rc < 0)
+               plt_err("Failed to disable timer ring");
+
+       return rc;
+}
+
 static int
 cnxk_tim_stats_get(const struct rte_event_timer_adapter *adapter,
                   struct rte_event_timer_adapter_stats *stats)
@@ -278,13 +345,14 @@ cnxk_tim_caps_get(const struct rte_eventdev *evdev, uint64_t flags,
        struct cnxk_tim_evdev *dev = cnxk_tim_priv_get();
 
        RTE_SET_USED(flags);
-       RTE_SET_USED(ops);
 
        if (dev == NULL)
                return -ENODEV;
 
        cnxk_tim_ops.init = cnxk_tim_ring_create;
        cnxk_tim_ops.uninit = cnxk_tim_ring_free;
+       cnxk_tim_ops.start = cnxk_tim_ring_start;
+       cnxk_tim_ops.stop = cnxk_tim_ring_stop;
        cnxk_tim_ops.get_info = cnxk_tim_ring_info_get;
 
        if (dev->enable_stats) {
@@ -295,6 +363,7 @@ cnxk_tim_caps_get(const struct rte_eventdev *evdev, uint64_t flags,
        /* Store evdev pointer for later use. */
        dev->event_dev = (struct rte_eventdev *)(uintptr_t)evdev;
        *caps = RTE_EVENT_TIMER_ADAPTER_CAP_INTERNAL_PORT;
+       *ops = &cnxk_tim_ops;
 
        return 0;
 }