diff mbox series

[v2] lib/librte_eal: support SVE flag on ARM64

Message ID 20200817124703.58157-1-huwei013@chinasoftinc.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers show
Series [v2] lib/librte_eal: support SVE flag on ARM64 | expand

Checks

Context Check Description
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-testing success Testing PASS
ci/Intel-compilation success Compilation OK
ci/iol-intel-Performance success Performance Testing PASS
ci/checkpatch warning coding style issues

Commit Message

Wei Hu (Xavier) Aug. 17, 2020, 12:47 p.m. UTC
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(+)

Comments

Jerin Jacob Aug. 17, 2020, 1:07 p.m. UTC | #1
On Mon, Aug 17, 2020 at 6:17 PM Wei Hu (Xavier)
<huwei013@chinasoftinc.com> wrote:
>
> 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>

Change the git commit like

eal/arm64: update CPU flags




> ---
> 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,

Please intrdouce the flag for all newly added items as well.

>         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)

Following stuff is missing
HWCAP2_FLAGM2           (1 << 7)
HWCAP2_FRINT            (1 << 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
>
Wei Hu (Xavier) Aug. 18, 2020, 2:47 a.m. UTC | #2
Hi, Jerin Jacob

On 2020/8/17 21:07, Jerin Jacob wrote:
> On Mon, Aug 17, 2020 at 6:17 PM Wei Hu (Xavier)
> <huwei013@chinasoftinc.com> wrote:
>>
>> 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>
> 
> Change the git commit like
> 
> eal/arm64: update CPU flags
OK, I will update it in V3.
> 
> 
> 
> 
>> ---
>> 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,
> 
> Please intrdouce the flag for all newly added items as well.
OK, I will update it in V3.
> 
>>          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)
> 
> Following stuff is missing
> HWCAP2_FLAGM2           (1 << 7)
> HWCAP2_FRINT            (1 << 8)

OK, I will update it in V3.

Thanks, Xavier
> 
>> +       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
>>
diff mbox series

Patch

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 */