From patchwork Mon Apr 9 21:00:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavan Nikhilesh X-Patchwork-Id: 37748 X-Patchwork-Delegate: jerinj@marvell.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id CD6881BA5D; Mon, 9 Apr 2018 23:01:46 +0200 (CEST) Received: from NAM01-BN3-obe.outbound.protection.outlook.com (mail-bn3nam01on0085.outbound.protection.outlook.com [104.47.33.85]) by dpdk.org (Postfix) with ESMTP id 2074E1BA3F for ; Mon, 9 Apr 2018 23:01:44 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=sw8j4BnvHQA6K8P1Xkqa3SsC8yOv4FSi70n5SKbcIm8=; b=VppukDFjtCCkNuWACAIhlz+ckqjVbotqHsZLosHBmbAgwMgVA/H71LTE7JW3hFDls5VaR2/nRUjgcoQc+mewZh6+ygtitnS0s/KdqQtnNHYkD3Osikt3mCBa+LV5lmZUn9K4uy9Qe7hYyOzYtvruzCl/Nyd79W+9HPdquaS7sIw= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Pavan.Bhagavatula@cavium.com; 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Signed-off-by: Pavan Nikhilesh Acked-by: Jerin Jacob --- drivers/event/octeontx/timvf_evdev.c | 52 +++++++++++++++++++++++++++- drivers/event/octeontx/timvf_evdev.h | 6 ++++ 2 files changed, 57 insertions(+), 1 deletion(-) diff --git a/drivers/event/octeontx/timvf_evdev.c b/drivers/event/octeontx/timvf_evdev.c index b54d8b84f..d6a8bb355 100644 --- a/drivers/event/octeontx/timvf_evdev.c +++ b/drivers/event/octeontx/timvf_evdev.c @@ -82,6 +82,45 @@ timvf_get_start_cyc(uint64_t *now, uint8_t ring_id) return octeontx_mbox_send(&hdr, NULL, 0, now, sizeof(uint64_t)); } +static int +optimize_bucket_parameters(struct timvf_ring *timr) +{ + uint32_t hbkts; + uint32_t lbkts; + uint64_t tck_nsec; + + hbkts = rte_align32pow2(timr->nb_bkts); + tck_nsec = RTE_ALIGN_MUL_CEIL(timr->max_tout / (hbkts - 1), 10); + + if ((tck_nsec < 1000 || hbkts > TIM_MAX_BUCKETS)) + hbkts = 0; + + lbkts = rte_align32prevpow2(timr->nb_bkts); + tck_nsec = RTE_ALIGN_MUL_CEIL((timr->max_tout / (lbkts - 1)), 10); + + if ((tck_nsec < 1000 || hbkts > TIM_MAX_BUCKETS)) + lbkts = 0; + + if (!hbkts && !lbkts) + return 0; + + if (!hbkts) { + timr->nb_bkts = lbkts; + goto end; + } else if (!lbkts) { + timr->nb_bkts = hbkts; + goto end; + } + + timr->nb_bkts = (hbkts - timr->nb_bkts) < + (timr->nb_bkts - lbkts) ? hbkts : lbkts; +end: + timr->get_target_bkt = bkt_and; + timr->tck_nsec = RTE_ALIGN_MUL_CEIL((timr->max_tout / + (timr->nb_bkts - 1)), 10); + return 1; +} + static int timvf_ring_start(const struct rte_event_timer_adapter *adptr) { @@ -204,7 +243,7 @@ timvf_ring_create(struct rte_event_timer_adapter *adptr) timr->clk_src = (int) rcfg->clk_src; timr->tim_ring_id = adptr->data->id; - timr->tck_nsec = rcfg->timer_tick_ns; + timr->tck_nsec = RTE_ALIGN_MUL_CEIL(rcfg->timer_tick_ns, 10); timr->max_tout = rcfg->max_tmo_ns; timr->nb_bkts = (timr->max_tout / timr->tck_nsec); timr->vbar0 = timvf_bar(timr->tim_ring_id, 0); @@ -214,6 +253,17 @@ timvf_ring_create(struct rte_event_timer_adapter *adptr) timr->nb_chunks = nb_timers / nb_chunk_slots; + /* Try to optimize the bucket parameters. */ + if ((rcfg->flags & RTE_EVENT_TIMER_ADAPTER_F_ADJUST_RES) + && !rte_is_power_of_2(timr->nb_bkts)) { + if (optimize_bucket_parameters(timr)) { + timvf_log_info("Optimized configured values"); + timvf_log_dbg("nb_bkts : %"PRIu32"", timr->nb_bkts); + timvf_log_dbg("tck_nsec : %"PRIu64"", timr->tck_nsec); + } else + timvf_log_info("Failed to Optimize configured values"); + } + if (rcfg->flags & RTE_EVENT_TIMER_ADAPTER_F_SP_PUT) { mp_flags = MEMPOOL_F_SP_PUT | MEMPOOL_F_SC_GET; timvf_log_info("Using single producer mode"); diff --git a/drivers/event/octeontx/timvf_evdev.h b/drivers/event/octeontx/timvf_evdev.h index 2e905702f..b3fc343af 100644 --- a/drivers/event/octeontx/timvf_evdev.h +++ b/drivers/event/octeontx/timvf_evdev.h @@ -190,6 +190,12 @@ bkt_mod(const uint32_t rel_bkt, const uint32_t nb_bkts) return rel_bkt % nb_bkts; } +static __rte_always_inline uint32_t +bkt_and(uint32_t rel_bkt, uint32_t nb_bkts) +{ + return rel_bkt & (nb_bkts - 1); +} + int timvf_info(struct timvf_info *tinfo); void *timvf_bar(uint8_t id, uint8_t bar); int timvf_timer_adapter_caps_get(const struct rte_eventdev *dev, uint64_t flags,