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From: "Wei Hu (Xavier)" <huwei013@chinasoftinc.com>
To: <dev@dpdk.org>
Cc: <xavier.huwei@huawei.com>, <nd@arm.com>,
	<Honnappa.Nagarahalli@arm.com>, <Ruifeng.Wang@arm.com>
Subject: [dpdk-dev] [PATCH v2] lib/librte_eal: support SVE flag on ARM64
Date: Mon, 17 Aug 2020 20:47:03 +0800
Message-ID: <20200817124703.58157-1-huwei013@chinasoftinc.com> (raw)

From: "Wei Hu (Xavier)" <xavier.huwei@huawei.com>

SVE is the next-generation SIMD extension of the ARMv8-A AArch64
instruction set.
The related marco definition can be found in linux kernel:
  arch/arm64/include/uapi/asm/hwcap.h

This patch supports getting cpu SVE feature on ARM64 platform.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
---
v1 -> v2:
	Adds more sve-related definition to rte_cpu_feature_table,
	sunch as SVE2, etc.
---
 lib/librte_eal/arm/include/rte_cpuflags_64.h |  1 +
 lib/librte_eal/arm/rte_cpuflags.c            | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/lib/librte_eal/arm/include/rte_cpuflags_64.h b/lib/librte_eal/arm/include/rte_cpuflags_64.h
index 95cc01474..069844ddb 100644
--- a/lib/librte_eal/arm/include/rte_cpuflags_64.h
+++ b/lib/librte_eal/arm/include/rte_cpuflags_64.h
@@ -22,6 +22,7 @@ enum rte_cpu_flag_t {
 	RTE_CPUFLAG_SHA2,
 	RTE_CPUFLAG_CRC32,
 	RTE_CPUFLAG_ATOMICS,
+	RTE_CPUFLAG_SVE,
 	RTE_CPUFLAG_AARCH64,
 	/* The last item */
 	RTE_CPUFLAG_NUMFLAGS,/**< This should always be the last! */
diff --git a/lib/librte_eal/arm/rte_cpuflags.c b/lib/librte_eal/arm/rte_cpuflags.c
index caf3dc83a..97a9fcfd4 100644
--- a/lib/librte_eal/arm/rte_cpuflags.c
+++ b/lib/librte_eal/arm/rte_cpuflags.c
@@ -95,6 +95,17 @@ const struct feature_entry rte_cpu_feature_table[] = {
 	FEAT_DEF(SHA2,		REG_HWCAP,    6)
 	FEAT_DEF(CRC32,		REG_HWCAP,    7)
 	FEAT_DEF(ATOMICS,	REG_HWCAP,    8)
+	FEAT_DEF(SVE,		REG_HWCAP,    22)
+	FEAT_DEF(SVE2,		REG_HWCAP2,   1)
+	FEAT_DEF(SVEAES,	REG_HWCAP2,   2)
+	FEAT_DEF(SVEPMULL,	REG_HWCAP2,   3)
+	FEAT_DEF(SVEBITPERM,	REG_HWCAP2,   4)
+	FEAT_DEF(SVESHA3,	REG_HWCAP2,   5)
+	FEAT_DEF(SVESM4,	REG_HWCAP2,   6)
+	FEAT_DEF(SVEI8MM,	REG_HWCAP2,   9)
+	FEAT_DEF(SVEF32MM,	REG_HWCAP2,   10)
+	FEAT_DEF(SVEF64MM,	REG_HWCAP2,   11)
+	FEAT_DEF(SVEBF16,	REG_HWCAP2,   12)
 	FEAT_DEF(AARCH64,	REG_PLATFORM, 1)
 };
 #endif /* RTE_ARCH */
-- 
2.27.0


             reply	other threads:[~2020-08-17 12:47 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-17 12:47 Wei Hu (Xavier) [this message]
2020-08-17 13:07 ` Jerin Jacob
2020-08-18  2:47   ` Wei Hu (Xavier)
2020-08-18  2:43 ` [dpdk-dev] [PATCH v3] eal/arm64: update CPU flags Wei Hu (Xavier)
2020-08-18  3:41   ` Ruifeng Wang
2020-08-18  5:07     ` Jerin Jacob
2020-08-18  8:05       ` Wei Hu (Xavier)
2020-08-18  8:06     ` Wei Hu (Xavier)
2020-08-18  8:09 ` [dpdk-dev] [PATCH v4 0/2] update CPU flags for arm64 platform Wei Hu (Xavier)
2020-08-18  8:09   ` [dpdk-dev] [PATCH v4 1/2] eal/arm64: update CPU flags Wei Hu (Xavier)
2020-08-19  2:27     ` Ruifeng Wang
2020-08-18  8:09   ` [dpdk-dev] [PATCH v4 2/2] test/cpuflag: add new flags for ARM64 platform Wei Hu (Xavier)
2020-08-19  2:26     ` Ruifeng Wang
2020-08-19  7:09       ` Wei Hu (Xavier)
2020-08-19  7:04 ` [dpdk-dev] [PATCH v5 0/2] update CPU flags for arm64 platform Wei Hu (Xavier)
2020-08-19  7:04   ` [dpdk-dev] [PATCH v5 1/2] eal/arm64: update CPU flags Wei Hu (Xavier)
2020-08-19  7:04   ` [dpdk-dev] [PATCH v5 2/2] test/cpuflag: add new flags for ARM64 platform Wei Hu (Xavier)
2020-08-19  8:11     ` Ruifeng Wang
2020-08-20  0:39       ` Wei Hu (Xavier)
2020-08-19 10:56 ` [dpdk-dev] [PATCH v6 0/2] update CPU flags for arm64 platform Wei Hu (Xavier)
2020-08-19 10:56   ` [dpdk-dev] [PATCH v6 1/2] eal/arm64: update CPU flags Wei Hu (Xavier)
2020-10-12  3:30     ` Wei Hu (Xavier)
2020-08-19 10:56   ` [dpdk-dev] [PATCH v6 2/2] test/cpuflag: add new flags for ARM64 platform Wei Hu (Xavier)
2020-09-01  1:42   ` [dpdk-dev] [PATCH v6 0/2] update CPU flags for arm64 platform Wei Hu (Xavier)
2020-09-03  3:11   ` Wei Hu (Xavier)
2020-09-14  6:00   ` Wei Hu (Xavier)
2020-09-28  0:49   ` Wei Hu (Xavier)
2020-09-30  1:44   ` Ruifeng Wang
2020-10-09  6:34     ` Wei Hu (Xavier)
2020-10-13 16:00     ` Thomas Monjalon

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