event/cnxk: add timer adapter periodic mode support

Add support for event timer adapter periodic mode capability.

Signed-off-by: Shijith Thotton <sthotton@marvell.com>
---
Depends-on: series-20928 (event/cnxk: update min interval calculation)

 drivers/event/cnxk/cnxk_tim_evdev.c | 21 +++++++++++++++++----
 drivers/event/cnxk/cnxk_tim_evdev.h |  1 +
 2 files changed, 18 insertions(+), 4 deletions(-)

On Thu, Dec 23, 2021 at 9:36 PM Shijith Thotton <sthotton@marvell.com> wrote:
>
> Add support for event timer adapter periodic mode capability.
>
> Signed-off-by: Shijith Thotton <sthotton@marvell.com>

Acked-by: Jerin Jacob <jerinj@marvell.com>
Applied to dpdk-next-net-eventdev/for-main. Thanks

> ---
> Depends-on: series-20928 (event/cnxk: update min interval calculation)
>
>  drivers/event/cnxk/cnxk_tim_evdev.c | 21 +++++++++++++++++----
>  drivers/event/cnxk/cnxk_tim_evdev.h |  1 +
>  2 files changed, 18 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/event/cnxk/cnxk_tim_evdev.c b/drivers/event/cnxk/cnxk_tim_evdev.c
> index 5d52a39752..4d22ac6ac3 100644
> --- a/drivers/event/cnxk/cnxk_tim_evdev.c
> +++ b/drivers/event/cnxk/cnxk_tim_evdev.c
> @@ -58,7 +58,7 @@ cnxk_tim_chnk_pool_create(struct cnxk_tim_ring *tim_ring,
>                 }
>                 tim_ring->aura = roc_npa_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,
> @@ -112,7 +112,9 @@ cnxk_tim_ring_info_get(const struct rte_event_timer_adapter *adptr,
>         struct cnxk_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));
>  }
> @@ -237,6 +239,12 @@ cnxk_tim_ring_create(struct rte_event_timer_adapter *adptr)
>                 goto tim_hw_free;
>         }
>
> +       if (rcfg->flags & RTE_EVENT_TIMER_ADAPTER_F_PERIODIC) {
> +               /* Use 2 buckets to avoid contention */
> +               rcfg->timer_tick_ns /= 2;
> +               tim_ring->ena_periodic = 1;
> +       }
> +
>         if (rcfg->timer_tick_ns < min_intvl_ns) {
>                 if (rcfg->flags & RTE_EVENT_TIMER_ADAPTER_F_ADJUST_RES) {
>                         rcfg->timer_tick_ns = min_intvl_ns;
> @@ -246,6 +254,9 @@ cnxk_tim_ring_create(struct rte_event_timer_adapter *adptr)
>                 }
>         }
>
> +       if (tim_ring->ena_periodic)
> +               rcfg->max_tmo_ns = rcfg->timer_tick_ns * 2;
> +
>         if (rcfg->timer_tick_ns > rcfg->max_tmo_ns) {
>                 plt_err("Max timeout to too high");
>                 rc = -ERANGE;
> @@ -322,7 +333,8 @@ cnxk_tim_ring_create(struct rte_event_timer_adapter *adptr)
>         if (rc < 0)
>                 goto tim_bkt_free;
>
> -       rc = roc_tim_lf_config(&dev->tim, tim_ring->ring_id, clk_src, 0, 0,
> +       rc = roc_tim_lf_config(&dev->tim, tim_ring->ring_id, clk_src,
> +                              tim_ring->ena_periodic, tim_ring->ena_dfb,
>                                tim_ring->nb_bkts, tim_ring->chunk_sz,
>                                tim_ring->tck_int, tim_ring->tck_nsec, clk_freq);
>         if (rc < 0) {
> @@ -493,7 +505,8 @@ 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;
> +       *caps = RTE_EVENT_TIMER_ADAPTER_CAP_INTERNAL_PORT |
> +               RTE_EVENT_TIMER_ADAPTER_CAP_PERIODIC;
>         *ops = &cnxk_tim_ops;
>
>         return 0;
> diff --git a/drivers/event/cnxk/cnxk_tim_evdev.h b/drivers/event/cnxk/cnxk_tim_evdev.h
> index 6b5342cc34..91a90ee2ce 100644
> --- a/drivers/event/cnxk/cnxk_tim_evdev.h
> +++ b/drivers/event/cnxk/cnxk_tim_evdev.h
> @@ -135,6 +135,7 @@ struct cnxk_tim_ring {
>         uint8_t enable_stats;
>         uint8_t disable_npa;
>         uint8_t ena_dfb;
> +       uint8_t ena_periodic;
>         uint16_t ring_id;
>         uint32_t aura;
>         uint64_t nb_timers;
> --
> 2.25.1
>