linux-kernel - [PATCH 4/4] crypto: [sha] Add build support for Intel SHA Extensions optimized SHA1 and SHA256

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Date:	Thu, 10 Sep 2015 15:27:26 -0700
From:	Tim Chen <tim.c.chen@...ux.intel.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>,
	"H. Peter Anvin" <hpa@...or.com>,
	"David S.Miller" <davem@...emloft.net>
Cc:	Sean Gulley <sean.m.gulley@...el.com>,
	Chandramouli Narayanan <mouli_7982@...oo.com>,
	Vinodh Gopal <vinodh.gopal@...el.com>,
	James Guilford <james.guilford@...el.com>,
	Wajdi Feghali <wajdi.k.feghali@...el.com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Jussi Kivilinna <jussi.kivilinna@....fi>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] crypto: [sha] Add build support for Intel SHA
 Extensions optimized SHA1 and SHA256


This patch provides the configuration and build support to
include and build the optimized SHA1 and SHA256 update transforms
for the kernel's crypto library.

Originally-by: Chandramouli Narayanan <mouli_7982@...oo.com>
Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>
---
 arch/x86/Makefile        |  6 ++++--
 arch/x86/crypto/Makefile |  8 ++++++++
 crypto/Kconfig           | 10 ++++++----
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 747860c..a8009c7 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -165,9 +165,11 @@ asinstr += $(call as-instr,pshufb %xmm0$(comma)%xmm0,-DCONFIG_AS_SSSE3=1)
 asinstr += $(call as-instr,crc32l %eax$(comma)%eax,-DCONFIG_AS_CRC32=1)
 avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1)
 avx2_instr :=$(call as-instr,vpbroadcastb %xmm0$(comma)%ymm1,-DCONFIG_AS_AVX2=1)
+sha1_ni_instr :=$(call as-instr,sha1msg1 %xmm0$(comma)%xmm1,-DCONFIG_AS_SHA1_NI=1)
+sha256_ni_instr :=$(call as-instr,sha256msg1 %xmm0$(comma)%xmm1,-DCONFIG_AS_SHA256_NI=1)
 
-KBUILD_AFLAGS += $(asinstr) $(avx_instr) $(avx2_instr)
-KBUILD_CFLAGS += $(asinstr) $(avx_instr) $(avx2_instr)
+KBUILD_AFLAGS += $(asinstr) $(avx_instr) $(avx2_instr) $(sha1_ni_instr) $(sha256_ni_instr)
+KBUILD_CFLAGS += $(asinstr) $(avx_instr) $(avx2_instr) $(sha1_ni_instr) $(sha256_ni_instr)
 
 LDFLAGS := -m elf_$(UTS_MACHINE)
 
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 9a2838c..b9b912a 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -5,6 +5,8 @@
 avx_supported := $(call as-instr,vpxor %xmm0$(comma)%xmm0$(comma)%xmm0,yes,no)
 avx2_supported := $(call as-instr,vpgatherdd %ymm0$(comma)(%eax$(comma)%ymm1\
 				$(comma)4)$(comma)%ymm2,yes,no)
+sha1_ni_supported :=$(call as-instr,sha1msg1 %xmm0$(comma)%xmm1,yes,no)
+sha256_ni_supported :=$(call as-instr,sha256msg1 %xmm0$(comma)%xmm1,yes,no)
 
 obj-$(CONFIG_CRYPTO_GLUE_HELPER_X86) += glue_helper.o
 
@@ -91,9 +93,15 @@ ifeq ($(avx2_supported),yes)
 sha1-ssse3-y += sha1_avx2_x86_64_asm.o
 poly1305-x86_64-y += poly1305-avx2-x86_64.o
 endif
+ifeq ($(sha1_ni_supported),yes)
+sha1-ssse3-y += sha1_ni_asm.o
+endif
 crc32c-intel-y := crc32c-intel_glue.o
 crc32c-intel-$(CONFIG_64BIT) += crc32c-pcl-intel-asm_64.o
 crc32-pclmul-y := crc32-pclmul_asm.o crc32-pclmul_glue.o
 sha256-ssse3-y := sha256-ssse3-asm.o sha256-avx-asm.o sha256-avx2-asm.o sha256_ssse3_glue.o
+ifeq ($(sha256_ni_supported),yes)
+sha256-ssse3-y += sha256_ni_asm.o
+endif
 sha512-ssse3-y := sha512-ssse3-asm.o sha512-avx-asm.o sha512-avx2-asm.o sha512_ssse3_glue.o
 crct10dif-pclmul-y := crct10dif-pcl-asm_64.o crct10dif-pclmul_glue.o
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 48ee3e1..fc93444 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -597,17 +597,18 @@ config CRYPTO_SHA1
 	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
 
 config CRYPTO_SHA1_SSSE3
-	tristate "SHA1 digest algorithm (SSSE3/AVX/AVX2)"
+	tristate "SHA1 digest algorithm (SSSE3/AVX/AVX2/SHA-NI)"
 	depends on X86 && 64BIT
 	select CRYPTO_SHA1
 	select CRYPTO_HASH
 	help
 	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
 	  using Supplemental SSE3 (SSSE3) instructions or Advanced Vector
-	  Extensions (AVX/AVX2), when available.
+	  Extensions (AVX/AVX2) or SHA-NI(SHA Extensions New Instructions),
+	  when available.
 
 config CRYPTO_SHA256_SSSE3
-	tristate "SHA256 digest algorithm (SSSE3/AVX/AVX2)"
+	tristate "SHA256 digest algorithm (SSSE3/AVX/AVX2/SHA-NI)"
 	depends on X86 && 64BIT
 	select CRYPTO_SHA256
 	select CRYPTO_HASH
@@ -615,7 +616,8 @@ config CRYPTO_SHA256_SSSE3
 	  SHA-256 secure hash standard (DFIPS 180-2) implemented
 	  using Supplemental SSE3 (SSSE3) instructions, or Advanced Vector
 	  Extensions version 1 (AVX1), or Advanced Vector Extensions
-	  version 2 (AVX2) instructions, when available.
+	  version 2 (AVX2) instructions, or SHA-NI (SHA Extensions New
+	  Instructions) when available.
 
 config CRYPTO_SHA512_SSSE3
 	tristate "SHA512 digest algorithm (SSSE3/AVX/AVX2)"
-- 
2.4.2


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