From patchwork Thu May 13 04:41:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chengwen Feng X-Patchwork-Id: 93240 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id E228AA0C47; Thu, 13 May 2021 06:45:05 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 6AD044067E; Thu, 13 May 2021 06:45:05 +0200 (CEST) Received: from szxga06-in.huawei.com (szxga06-in.huawei.com [45.249.212.32]) by mails.dpdk.org (Postfix) with ESMTP id 9D20B4003F for ; Thu, 13 May 2021 06:45:03 +0200 (CEST) Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4FgfCs4d3zzmVcw; Thu, 13 May 2021 12:42:49 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.498.0; Thu, 13 May 2021 12:44:58 +0800 From: Chengwen Feng To: , CC: , , , , , , , , Date: Thu, 13 May 2021 12:41:48 +0800 Message-ID: <1620880909-32429-2-git-send-email-fengchengwen@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1620880909-32429-1-git-send-email-fengchengwen@huawei.com> References: <1620808126-18876-1-git-send-email-fengchengwen@huawei.com> <1620880909-32429-1-git-send-email-fengchengwen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Subject: [dpdk-dev] [PATCH v2 1/2] config/arm: select best -march parameter for kunpeng soc X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Currently, the soc_kunpeng930 declares '-march=armv8.2-a+crypto+sve', but some compiler doesn't recognize the march because it doesn't support sve. To solve this bug we use the following scheme: 1. Define 'march_base' tuple which defines support march, it should arrange from lower to higher. e.g. 'march_base' : ['-march=armv8-a', '-march=armv8.2-a'] 2. Define 'march_feature' tuple which defines support feature. e.g. 'march_feature' : ['crypto', 'sve'] 3. Select the best march+feature combination based on 'march_base' and 'march_feature' tuples. 4. Use the best march+feature combination as the default machine_args. Fixes: 7cf32a22b240 ("config/arm: add Hisilicon kunpeng") Signed-off-by: Chengwen Feng --- config/arm/meson.build | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/config/arm/meson.build b/config/arm/meson.build index 3f34ec9..5b91fe1 100644 --- a/config/arm/meson.build +++ b/config/arm/meson.build @@ -149,7 +149,9 @@ implementer_hisilicon = { ], 'part_number_config': { '0xd01': { - 'machine_args': ['-march=armv8.2-a+crypto', '-mtune=tsv110'], + 'march_base' : ['-march=armv8-a', '-march=armv8.2-a'], + 'march_feature' : ['crypto'], + 'machine_args': ['-mtune=tsv110'], 'flags': [ ['RTE_MACHINE', '"Kunpeng 920"'], ['RTE_ARM_FEATURE_ATOMICS', true], @@ -158,7 +160,9 @@ implementer_hisilicon = { ] }, '0xd02': { - 'machine_args': ['-march=armv8.2-a+crypto+sve'], + 'march_base' : ['-march=armv8-a', '-march=armv8.2-a'], + 'march_feature' : ['crypto', 'sve'], + 'machine_args': [], 'flags': [ ['RTE_MACHINE', '"Kunpeng 930"'], ['RTE_ARM_FEATURE_ATOMICS', true], @@ -449,8 +453,26 @@ else # add/overwrite flags in the proper order dpdk_flags = flags_common + implementer_config['flags'] + part_number_config.get('flags', []) + soc_flags + # select the best march+feature combination + machine_march = [] + if part_number_config.has_key('march_base') + foreach arch: part_number_config['march_base'] + if cc.has_argument(arch) + machine_march = arch # Set the higher supported arch as possible + endif + endforeach + endif + if part_number_config.has_key('march_feature') + foreach feature: part_number_config['march_feature'] + tmp_machine_march = machine_march + '+' + feature + if cc.has_argument(tmp_machine_march) + machine_march = tmp_machine_march # Set the morer supported feature as possible + endif + endforeach + endif + # apply supported machine args - machine_args = [] # Clear previous machine args + machine_args = machine_march foreach flag: part_number_config['machine_args'] if cc.has_argument(flag) machine_args += flag From patchwork Thu May 13 04:41:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chengwen Feng X-Patchwork-Id: 93241 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 56653A0C47; Thu, 13 May 2021 06:45:11 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 64167410FE; Thu, 13 May 2021 06:45:06 +0200 (CEST) Received: from szxga06-in.huawei.com (szxga06-in.huawei.com [45.249.212.32]) by mails.dpdk.org (Postfix) with ESMTP id 035D54067E for ; Thu, 13 May 2021 06:45:03 +0200 (CEST) Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4FgfCs44ZqzmVcr; Thu, 13 May 2021 12:42:49 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.498.0; Thu, 13 May 2021 12:44:58 +0800 From: Chengwen Feng To: , CC: , , , , , , , , Date: Thu, 13 May 2021 12:41:49 +0800 Message-ID: <1620880909-32429-3-git-send-email-fengchengwen@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1620880909-32429-1-git-send-email-fengchengwen@huawei.com> References: <1620808126-18876-1-git-send-email-fengchengwen@huawei.com> <1620880909-32429-1-git-send-email-fengchengwen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Subject: [dpdk-dev] [PATCH v2 2/2] net/hns3: refactor SVE code compile method X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Currently, the SVE code is compiled only when -march supports SVE (e.g. '-march=armv8.2a+sve'), there maybe some problem[1] with this approach. The solution: a. If the minimum instruction set support SVE then compiles it. b. Else if the compiler support SVE then compiles it. c. Otherwise don't compile it. [1] https://mails.dpdk.org/archives/dev/2021-April/208189.html Fixes: 8c25b02b082a ("net/hns3: fix enabling SVE Rx/Tx") Fixes: 952ebacce4f2 ("net/hns3: support SVE Rx") Cc: stable@dpdk.org Signed-off-by: Chengwen Feng --- drivers/net/hns3/hns3_rxtx.c | 2 +- drivers/net/hns3/meson.build | 13 +++++++++++++ 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c index 1d7a769..4ef20c6 100644 --- a/drivers/net/hns3/hns3_rxtx.c +++ b/drivers/net/hns3/hns3_rxtx.c @@ -2808,7 +2808,7 @@ hns3_get_default_vec_support(void) static bool hns3_get_sve_support(void) { -#if defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_SVE) +#if defined(CC_SVE_SUPPORT) if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_256) return false; if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SVE)) diff --git a/drivers/net/hns3/meson.build b/drivers/net/hns3/meson.build index 53c7df7..8563d70 100644 --- a/drivers/net/hns3/meson.build +++ b/drivers/net/hns3/meson.build @@ -35,7 +35,20 @@ deps += ['hash'] if arch_subdir == 'arm' and dpdk_conf.get('RTE_ARCH_64') sources += files('hns3_rxtx_vec.c') + + # compile SVE when: + # a. support SVE in minimum instruction set baseline + # b. it's not minimum instruction set, but compiler support if cc.get_define('__ARM_FEATURE_SVE', args: machine_args) != '' + cflags += ['-DCC_SVE_SUPPORT'] sources += files('hns3_rxtx_vec_sve.c') + elif cc.has_argument('-march=armv8.2-a+sve') + cflags += ['-DCC_SVE_SUPPORT'] + hns3_sve_lib = static_library('hns3_sve_lib', + 'hns3_rxtx_vec_sve.c', + dependencies: [static_rte_ethdev], + include_directories: includes, + c_args: [cflags, '-march=armv8.2-a+sve']) + objs += hns3_sve_lib.extract_objects('hns3_rxtx_vec_sve.c') endif endif