From patchwork Fri Oct 30 13:49:16 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hunt, David" X-Patchwork-Id: 8393 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 8C8E58E82; Fri, 30 Oct 2015 14:49:36 +0100 (CET) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 0A1B48E80 for ; Fri, 30 Oct 2015 14:49:34 +0100 (CET) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP; 30 Oct 2015 06:49:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,218,1444719600"; d="scan'208";a="591020197" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by FMSMGA003.fm.intel.com with ESMTP; 30 Oct 2015 06:49:34 -0700 Received: from sivswdev02.ir.intel.com (sivswdev02.ir.intel.com [10.237.217.46]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id t9UDnWBk006494; Fri, 30 Oct 2015 13:49:32 GMT Received: from sivswdev02.ir.intel.com (localhost [127.0.0.1]) by sivswdev02.ir.intel.com with ESMTP id t9UDnW5Q019904; Fri, 30 Oct 2015 13:49:32 GMT Received: (from dhunt5@localhost) by sivswdev02.ir.intel.com with id t9UDnWIf019900; Fri, 30 Oct 2015 13:49:32 GMT From: David Hunt To: dev@dpdk.org Date: Fri, 30 Oct 2015 13:49:16 +0000 Message-Id: <1446212959-19832-4-git-send-email-david.hunt@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1446212959-19832-1-git-send-email-david.hunt@intel.com> References: <1446212959-19832-1-git-send-email-david.hunt@intel.com> Subject: [dpdk-dev] [PATCH v3 3/6] eal/arm: add 64-bit armv8 version of rte_cycles.h X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: David Hunt --- .../common/include/arch/arm/rte_cycles.h | 4 ++ .../common/include/arch/arm/rte_cycles_64.h | 77 ++++++++++++++++++++++ 2 files changed, 81 insertions(+) create mode 100644 lib/librte_eal/common/include/arch/arm/rte_cycles_64.h diff --git a/lib/librte_eal/common/include/arch/arm/rte_cycles.h b/lib/librte_eal/common/include/arch/arm/rte_cycles.h index b2372fa..a8009a0 100644 --- a/lib/librte_eal/common/include/arch/arm/rte_cycles.h +++ b/lib/librte_eal/common/include/arch/arm/rte_cycles.h @@ -33,6 +33,10 @@ #ifndef _RTE_CYCLES_ARM_H_ #define _RTE_CYCLES_ARM_H_ +#ifdef RTE_ARCH_64 +#include +#else #include +#endif #endif /* _RTE_CYCLES_ARM_H_ */ diff --git a/lib/librte_eal/common/include/arch/arm/rte_cycles_64.h b/lib/librte_eal/common/include/arch/arm/rte_cycles_64.h new file mode 100644 index 0000000..148b9f4 --- /dev/null +++ b/lib/librte_eal/common/include/arch/arm/rte_cycles_64.h @@ -0,0 +1,77 @@ +/* + * BSD LICENSE + * + * Copyright (C) IBM Corporation 2014. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of IBM Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef _RTE_CYCLES_ARM64_H_ +#define _RTE_CYCLES_ARM64_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include "generic/rte_cycles.h" + +/** + * Read the time base register. + * + * @return + * The time base for this lcore. + */ +static inline uint64_t +rte_rdtsc(void) +{ + uint64_t tsc; + + asm volatile("mrs %0, CNTVCT_EL0" : "=r" (tsc)); + +#ifdef RTE_TIMER_MULTIPLIER + return tsc * RTE_TIMER_MULTIPLIER; +#else + return tsc; +#endif + +} + +static inline uint64_t +rte_rdtsc_precise(void) +{ + asm volatile("isb sy" :::); + return rte_rdtsc(); +} + +static inline uint64_t +rte_get_tsc_cycles(void) { return rte_rdtsc(); } + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_CYCLES_ARM64_H_ */