[dpdk-dev] [PATCH v6 1/2] eal/arm64: update CPU flags

[Wei Hu (Xavier)]

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

ARM64 Linux kernel updated the CPU flags using the HWCAP scheme.
The related marco definition can be found in linux kernel:
  arch/arm64/include/uapi/asm/hwcap.h

This patch incorporates those changes to the eal library.

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei at huawei.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
---
v4 -> v5:
	No change.
v3 -> v4:
	Update commit log.
v2 -> v3:
	1. Change commit log.
	2. Add HWCAP2_FLAGM2 and HWCAP2_FRINT to rte_cpu_feature_table[].
	3. Add the flags for newly added items into enum rte_cpu_flag_t.
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 | 13 +++++++++++++
 lib/librte_eal/arm/rte_cpuflags.c            | 13 +++++++++++++
 2 files changed, 26 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..aa7a56d49 100644
--- a/lib/librte_eal/arm/include/rte_cpuflags_64.h
+++ b/lib/librte_eal/arm/include/rte_cpuflags_64.h
@@ -22,6 +22,19 @@ enum rte_cpu_flag_t {
 	RTE_CPUFLAG_SHA2,
 	RTE_CPUFLAG_CRC32,
 	RTE_CPUFLAG_ATOMICS,
+	RTE_CPUFLAG_SVE,
+	RTE_CPUFLAG_SVE2,
+	RTE_CPUFLAG_SVEAES,
+	RTE_CPUFLAG_SVEPMULL,
+	RTE_CPUFLAG_SVEBITPERM,
+	RTE_CPUFLAG_SVESHA3,
+	RTE_CPUFLAG_SVESM4,
+	RTE_CPUFLAG_FLAGM2,
+	RTE_CPUFLAG_FRINT,
+	RTE_CPUFLAG_SVEI8MM,
+	RTE_CPUFLAG_SVEF32MM,
+	RTE_CPUFLAG_SVEF64MM,
+	RTE_CPUFLAG_SVEBF16,
 	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..7b257b787 100644
--- a/lib/librte_eal/arm/rte_cpuflags.c
+++ b/lib/librte_eal/arm/rte_cpuflags.c
@@ -95,6 +95,19 @@ 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(FLAGM2,	REG_HWCAP2,   7)
+	FEAT_DEF(FRINT,		REG_HWCAP2,   8)
+	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