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GET /api/patches/8583/?format=api
{ "id": 8583, "url": "https://patches.dpdk.org/api/patches/8583/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1446556153-18845-3-git-send-email-jerin.jacob@caviumnetworks.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1446556153-18845-3-git-send-email-jerin.jacob@caviumnetworks.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1446556153-18845-3-git-send-email-jerin.jacob@caviumnetworks.com", "date": "2015-11-03T13:09:03", "name": "[dpdk-dev,02/12] eal: arm64: add armv8-a version of rte_cpuflags_64.h", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "46abcb147aefd9204087a575cd9b9c0692fd77fc", "submitter": { "id": 305, "url": "https://patches.dpdk.org/api/people/305/?format=api", "name": "Jerin Jacob", "email": "jerin.jacob@caviumnetworks.com" }, "delegate": null, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1446556153-18845-3-git-send-email-jerin.jacob@caviumnetworks.com/mbox/", "series": [], "comments": "https://patches.dpdk.org/api/patches/8583/comments/", "check": "pending", "checks": "https://patches.dpdk.org/api/patches/8583/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id AD10F91DD;\n\tTue, 3 Nov 2015 14:10:09 +0100 (CET)", "from na01-bl2-obe.outbound.protection.outlook.com\n\t(mail-bl2on0056.outbound.protection.outlook.com [65.55.169.56])\n\tby dpdk.org (Postfix) with ESMTP id ACFBB91DC\n\tfor <dev@dpdk.org>; Tue, 3 Nov 2015 14:10:07 +0100 (CET)", "from localhost.caveonetworks.com (111.93.218.67) by\n\tBY2PR0701MB1974.namprd07.prod.outlook.com (10.163.155.20) with\n\tMicrosoft SMTP\n\tServer (TLS) id 15.1.312.18; Tue, 3 Nov 2015 13:10:04 +0000" ], "Authentication-Results": "spf=none (sender IP is )\n\tsmtp.mailfrom=Jerin.Jacob@caviumnetworks.com; ", "From": "Jerin Jacob <jerin.jacob@caviumnetworks.com>", "To": "<dev@dpdk.org>", "Date": "Tue, 3 Nov 2015 18:39:03 +0530", "Message-ID": "<1446556153-18845-3-git-send-email-jerin.jacob@caviumnetworks.com>", "X-Mailer": "git-send-email 2.1.0", "In-Reply-To": "<1446556153-18845-2-git-send-email-jerin.jacob@caviumnetworks.com>", "References": "<1446556153-18845-1-git-send-email-jerin.jacob@caviumnetworks.com>\n\t<1446556153-18845-2-git-send-email-jerin.jacob@caviumnetworks.com>", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-Originating-IP": "[111.93.218.67]", "X-ClientProxiedBy": "MAXPR01CA0048.INDPRD01.PROD.OUTLOOK.COM (25.164.146.148)\n\tTo\n\tBY2PR0701MB1974.namprd07.prod.outlook.com (25.163.155.20)", "X-Microsoft-Exchange-Diagnostics": [ "1; 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SFP:1101; SCL:1; SRVR:BY2PR0701MB1974;\n\tH:localhost.caveonetworks.com; \n\tFPR:; SPF:None; PTR:InfoNoRecords; MX:1; A:1; LANG:en; ", "Received-SPF": "None (protection.outlook.com: caviumnetworks.com does not\n\tdesignate permitted sender hosts)", "SpamDiagnosticOutput": "1:23", "SpamDiagnosticMetadata": "NSPM", "X-OriginatorOrg": "caviumnetworks.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "03 Nov 2015 13:10:04.7359\n\t(UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "BY2PR0701MB1974", "Subject": "[dpdk-dev] [PATCH 02/12] eal: arm64: add armv8-a version of\n\trte_cpuflags_64.h", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "patches and discussions about DPDK <dev.dpdk.org>", "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://dpdk.org/ml/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>\n---\n .../common/include/arch/arm/rte_cpuflags.h | 4 +\n .../common/include/arch/arm/rte_cpuflags_64.h | 152 +++++++++++++++++++++\n 2 files changed, 156 insertions(+)\n create mode 100644 lib/librte_eal/common/include/arch/arm/rte_cpuflags_64.h", "diff": "diff --git a/lib/librte_eal/common/include/arch/arm/rte_cpuflags.h b/lib/librte_eal/common/include/arch/arm/rte_cpuflags.h\nindex 8de78d2..b8f6288 100644\n--- a/lib/librte_eal/common/include/arch/arm/rte_cpuflags.h\n+++ b/lib/librte_eal/common/include/arch/arm/rte_cpuflags.h\n@@ -33,6 +33,10 @@\n #ifndef _RTE_CPUFLAGS_ARM_H_\n #define _RTE_CPUFLAGS_ARM_H_\n \n+#ifdef RTE_ARCH_64\n+#include <rte_cpuflags_64.h>\n+#else\n #include <rte_cpuflags_32.h>\n+#endif\n \n #endif /* _RTE_CPUFLAGS_ARM_H_ */\ndiff --git a/lib/librte_eal/common/include/arch/arm/rte_cpuflags_64.h b/lib/librte_eal/common/include/arch/arm/rte_cpuflags_64.h\nnew file mode 100644\nindex 0000000..7bcc12f\n--- /dev/null\n+++ b/lib/librte_eal/common/include/arch/arm/rte_cpuflags_64.h\n@@ -0,0 +1,152 @@\n+/*\n+ * BSD LICENSE\n+ *\n+ * Copyright (C) Cavium networks Ltd. 2015.\n+ *\n+ * Redistribution and use in source and binary forms, with or without\n+ * modification, are permitted provided that the following conditions\n+ * are met:\n+ *\n+ * * Redistributions of source code must retain the above copyright\n+ * notice, this list of conditions and the following disclaimer.\n+ * * Redistributions in binary form must reproduce the above copyright\n+ * notice, this list of conditions and the following disclaimer in\n+ * the documentation and/or other materials provided with the\n+ * distribution.\n+ * * Neither the name of Cavium networks nor the names of its\n+ * contributors may be used to endorse or promote products derived\n+ * from this software without specific prior written permission.\n+ *\n+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n+ * \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n+ */\n+\n+#ifndef _RTE_CPUFLAGS_ARM64_H_\n+#define _RTE_CPUFLAGS_ARM64_H_\n+\n+#ifdef __cplusplus\n+extern \"C\" {\n+#endif\n+\n+#include <elf.h>\n+#include <fcntl.h>\n+#include <assert.h>\n+#include <unistd.h>\n+#include <string.h>\n+\n+#include \"generic/rte_cpuflags.h\"\n+\n+#ifndef AT_HWCAP\n+#define AT_HWCAP 16\n+#endif\n+\n+#ifndef AT_HWCAP2\n+#define AT_HWCAP2 26\n+#endif\n+\n+#ifndef AT_PLATFORM\n+#define AT_PLATFORM 15\n+#endif\n+\n+/* software based registers */\n+enum cpu_register_t {\n+\tREG_HWCAP = 0,\n+\tREG_HWCAP2,\n+\tREG_PLATFORM,\n+};\n+\n+/**\n+ * Enumeration of all CPU features supported\n+ */\n+enum rte_cpu_flag_t {\n+\tRTE_CPUFLAG_FP = 0,\n+\tRTE_CPUFLAG_NEON,\n+\tRTE_CPUFLAG_EVTSTRM,\n+\tRTE_CPUFLAG_AES,\n+\tRTE_CPUFLAG_PMULL,\n+\tRTE_CPUFLAG_SHA1,\n+\tRTE_CPUFLAG_SHA2,\n+\tRTE_CPUFLAG_CRC32,\n+\tRTE_CPUFLAG_AARCH64,\n+\t/* The last item */\n+\tRTE_CPUFLAG_NUMFLAGS,/**< This should always be the last! */\n+};\n+\n+static const struct feature_entry cpu_feature_table[] = {\n+\tFEAT_DEF(FP,\t\t0x00000001, 0, REG_HWCAP, 0)\n+\tFEAT_DEF(NEON,\t\t0x00000001, 0, REG_HWCAP, 1)\n+\tFEAT_DEF(EVTSTRM,\t0x00000001, 0, REG_HWCAP, 2)\n+\tFEAT_DEF(AES,\t\t0x00000001, 0, REG_HWCAP, 3)\n+\tFEAT_DEF(PMULL,\t\t0x00000001, 0, REG_HWCAP, 4)\n+\tFEAT_DEF(SHA1,\t\t0x00000001, 0, REG_HWCAP, 5)\n+\tFEAT_DEF(SHA2,\t\t0x00000001, 0, REG_HWCAP, 6)\n+\tFEAT_DEF(CRC32,\t\t0x00000001, 0, REG_HWCAP, 7)\n+\tFEAT_DEF(AARCH64,\t0x00000001, 0, REG_PLATFORM, 1)\n+};\n+\n+/*\n+ * Read AUXV software register and get cpu features for ARM\n+ */\n+static inline void\n+rte_cpu_get_features(__attribute__((unused)) uint32_t leaf,\n+\t\t __attribute__((unused)) uint32_t subleaf,\n+\t\t cpuid_registers_t out)\n+{\n+\tint auxv_fd;\n+\tElf64_auxv_t auxv;\n+\n+\tauxv_fd = open(\"/proc/self/auxv\", O_RDONLY);\n+\tassert(auxv_fd);\n+\twhile (read(auxv_fd, &auxv,\n+\t\t sizeof(Elf64_auxv_t)) == sizeof(Elf64_auxv_t)) {\n+\t\tif (auxv.a_type == AT_HWCAP) {\n+\t\t\tout[REG_HWCAP] = auxv.a_un.a_val;\n+\t\t} else if (auxv.a_type == AT_HWCAP2) {\n+\t\t\tout[REG_HWCAP2] = auxv.a_un.a_val;\n+\t\t} else if (auxv.a_type == AT_PLATFORM) {\n+\t\t\tif (!strcmp((const char *)auxv.a_un.a_val, \"aarch64\"))\n+\t\t\t\tout[REG_PLATFORM] = 0x0001;\n+\t\t}\n+\t}\n+}\n+\n+/*\n+ * Checks if a particular flag is available on current machine.\n+ */\n+static inline int\n+rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature)\n+{\n+\tconst struct feature_entry *feat;\n+\tcpuid_registers_t regs = {0};\n+\n+\tif (feature >= RTE_CPUFLAG_NUMFLAGS)\n+\t\t/* Flag does not match anything in the feature tables */\n+\t\treturn -ENOENT;\n+\n+\tfeat = &cpu_feature_table[feature];\n+\n+\tif (!feat->leaf)\n+\t\t/* This entry in the table wasn't filled out! */\n+\t\treturn -EFAULT;\n+\n+\t/* get the cpuid leaf containing the desired feature */\n+\trte_cpu_get_features(feat->leaf, feat->subleaf, regs);\n+\n+\t/* check if the feature is enabled */\n+\treturn (regs[feat->reg] >> feat->bit) & 1;\n+}\n+\n+#ifdef __cplusplus\n+}\n+#endif\n+\n+#endif /* _RTE_CPUFLAGS_ARM64_H_ */\n", "prefixes": [ "dpdk-dev", "02/12" ] }