event/octeontx2: support timer periodic mode

Add support for periodic mode in event timer adapter.

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

diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
index cbe0ab1..a397cd2 100644 (file)
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -152,6 +152,7 @@ New Features
 * **Introduced period timer mode in eventdev timer adapter.**
 
   * Added support for periodic timer mode in eventdev timer adapter.
+  * Added support for periodic timer mode in octeontx2 event device driver.
 
 * **Updated testpmd.**
 

diff --git a/drivers/event/octeontx2/otx2_tim_evdev.c b/drivers/event/octeontx2/otx2_tim_evdev.c
index 4c24cc8..39a29f1 100644 (file)
--- a/drivers/event/octeontx2/otx2_tim_evdev.c
+++ b/drivers/event/octeontx2/otx2_tim_evdev.c
@@ -65,7 +65,8 @@ otx2_tim_ring_info_get(const struct rte_event_timer_adapter *adptr,
        struct otx2_tim_ring *tim_ring = adptr->data->adapter_priv;
 
        adptr_info->max_tmo_ns = tim_ring->max_tout;
-       adptr_info->min_resolution_ns = tim_ring->tck_nsec;
+       adptr_info->min_resolution_ns = tim_ring->ena_periodic ?
+               tim_ring->max_tout : tim_ring->tck_nsec;
        rte_memcpy(&adptr_info->conf, &adptr->data->conf,
                   sizeof(struct rte_event_timer_adapter_conf));
 }
@@ -163,7 +164,7 @@ tim_chnk_pool_create(struct otx2_tim_ring *tim_ring,
                }
                tim_ring->aura = npa_lf_aura_handle_to_aura(
                                tim_ring->chunk_pool->pool_id);
-               tim_ring->ena_dfb = 0;
+               tim_ring->ena_dfb = tim_ring->ena_periodic ? 1 : 0;
        } else {
                tim_ring->chunk_pool = rte_mempool_create(pool_name,
                                tim_ring->nb_chunks, tim_ring->chunk_sz,
@@ -254,6 +255,7 @@ otx2_tim_ring_create(struct rte_event_timer_adapter *adptr)
        struct tim_ring_req *free_req;
        struct tim_lf_alloc_req *req;
        struct tim_lf_alloc_rsp *rsp;
+       uint8_t is_periodic;
        int i, rc;
 
        if (dev == NULL)
@@ -284,6 +286,20 @@ otx2_tim_ring_create(struct rte_event_timer_adapter *adptr)
                }
        }
 
+       is_periodic = 0;
+       if (rcfg->flags & RTE_EVENT_TIMER_ADAPTER_F_PERIODIC) {
+               if (rcfg->max_tmo_ns &&
+                   rcfg->max_tmo_ns != rcfg->timer_tick_ns) {
+                       rc = -ERANGE;
+                       goto rng_mem_err;
+               }
+
+               /* Use 2 buckets to avoid contention */
+               rcfg->max_tmo_ns = rcfg->timer_tick_ns;
+               rcfg->timer_tick_ns /= 2;
+               is_periodic = 1;
+       }
+
        tim_ring = rte_zmalloc("otx2_tim_prv", sizeof(struct otx2_tim_ring), 0);
        if (tim_ring == NULL) {
                rc =  -ENOMEM;
@@ -296,11 +312,13 @@ otx2_tim_ring_create(struct rte_event_timer_adapter *adptr)
        tim_ring->clk_src = (int)rcfg->clk_src;
        tim_ring->ring_id = adptr->data->id;
        tim_ring->tck_nsec = RTE_ALIGN_MUL_CEIL(rcfg->timer_tick_ns, 10);
-       tim_ring->max_tout = rcfg->max_tmo_ns;
+       tim_ring->max_tout = is_periodic ?
+               rcfg->timer_tick_ns * 2 : rcfg->max_tmo_ns;
        tim_ring->nb_bkts = (tim_ring->max_tout / tim_ring->tck_nsec);
        tim_ring->chunk_sz = dev->chunk_sz;
        tim_ring->nb_timers = rcfg->nb_timers;
        tim_ring->disable_npa = dev->disable_npa;
+       tim_ring->ena_periodic = is_periodic;
        tim_ring->enable_stats = dev->enable_stats;
 
        for (i = 0; i < dev->ring_ctl_cnt ; i++) {
@@ -348,7 +366,7 @@ otx2_tim_ring_create(struct rte_event_timer_adapter *adptr)
        cfg_req->ring = tim_ring->ring_id;
        cfg_req->bigendian = false;
        cfg_req->clocksource = tim_ring->clk_src;
-       cfg_req->enableperiodic = false;
+       cfg_req->enableperiodic = tim_ring->ena_periodic;
        cfg_req->enabledontfreebuffer = tim_ring->ena_dfb;
        cfg_req->bucketsize = tim_ring->nb_bkts;
        cfg_req->chunksize = tim_ring->chunk_sz;
@@ -568,7 +586,8 @@ otx2_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;
+       *caps = RTE_EVENT_TIMER_ADAPTER_CAP_INTERNAL_PORT |
+               RTE_EVENT_TIMER_ADAPTER_CAP_PERIODIC;
        *ops = &otx2_tim_ops;
 
        return 0;

diff --git a/drivers/event/octeontx2/otx2_tim_evdev.h b/drivers/event/octeontx2/otx2_tim_evdev.h
index 44e3c7b..82d116c 100644 (file)
--- a/drivers/event/octeontx2/otx2_tim_evdev.h
+++ b/drivers/event/octeontx2/otx2_tim_evdev.h
@@ -155,6 +155,7 @@ struct otx2_tim_ring {
        uint8_t disable_npa;
        uint8_t optimized;
        uint8_t ena_dfb;
+       uint8_t ena_periodic;
        uint16_t ring_id;
        uint32_t aura;
        uint64_t nb_timers;