[dpdk-dev] [PATCH v3 1/4] mk: add crypto capability for generic armv8a and thunderx

[Ashwin Sekhar T K <ashwin.sekhar@caviumnetworks.com>]

armv8-a has optional CRYPTO extension which adds the
AES, PMULL, SHA1 and SHA2 capabilities. -march=armv8-a+crypto
enables code generation for the ARMv8-A architecture together
with the optional CRYPTO extensions.

added the following flags to detect the corresponding
capability at compile time
 * RTE_MACHINE_CPUFLAG_AES
 * RTE_MACHINE_CPUFLAG_PMULL
 * RTE_MACHINE_CPUFLAG_SHA1
 * RTE_MACHINE_CPUFLAG_SHA2

at run-time, the following flags can be used to detect these
capabilities
 * RTE_CPUFLAG_AES
 * RTE_CPUFLAG_PMULL
 * RTE_CPUFLAG_SHA1
 * RTE_CPUFLAG_SHA2

Signed-off-by: Ashwin Sekhar T K <ashwin.sekhar@caviumnetworks.com>
---
v3:
* Moved the feature detection changes into separate commit
* Added the AES, SHA1, SHA2 capabilities also under the CRYPTO flag
  along with PMULL

 mk/machine/armv8a/rte.vars.mk            | 2 +-
 mk/machine/thunderx/rte.vars.mk          | 2 +-
 mk/rte.cpuflags.mk                       | 6 ++++++
 mk/toolchain/gcc/rte.toolchain-compat.mk | 1 +
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/mk/machine/armv8a/rte.vars.mk b/mk/machine/armv8a/rte.vars.mk
index d5049e1..51966a5 100644
--- a/mk/machine/armv8a/rte.vars.mk
+++ b/mk/machine/armv8a/rte.vars.mk
@@ -55,4 +55,4 @@
 # CPU_LDFLAGS =
 # CPU_ASFLAGS =
 
-MACHINE_CFLAGS += -march=armv8-a+crc
+MACHINE_CFLAGS += -march=armv8-a+crc+crypto
diff --git a/mk/machine/thunderx/rte.vars.mk b/mk/machine/thunderx/rte.vars.mk
index ad5a379..6784105 100644
--- a/mk/machine/thunderx/rte.vars.mk
+++ b/mk/machine/thunderx/rte.vars.mk
@@ -55,4 +55,4 @@
 # CPU_LDFLAGS =
 # CPU_ASFLAGS =
 
-MACHINE_CFLAGS += -march=armv8-a+crc -mcpu=thunderx
+MACHINE_CFLAGS += -march=armv8-a+crc+crypto -mcpu=thunderx
diff --git a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk
index 4288c14..a813c91 100644
--- a/mk/rte.cpuflags.mk
+++ b/mk/rte.cpuflags.mk
@@ -125,6 +125,12 @@ ifneq ($(filter $(AUTO_CPUFLAGS),__ARM_FEATURE_CRC32),)
 CPUFLAGS += CRC32
 endif
 
+ifneq ($(filter $(AUTO_CPUFLAGS),__ARM_FEATURE_CRYPTO),)
+CPUFLAGS += AES
+CPUFLAGS += PMULL
+CPUFLAGS += SHA1
+CPUFLAGS += SHA2
+endif
 
 MACHINE_CFLAGS += $(addprefix -DRTE_MACHINE_CPUFLAG_,$(CPUFLAGS))
 
diff --git a/mk/toolchain/gcc/rte.toolchain-compat.mk b/mk/toolchain/gcc/rte.toolchain-compat.mk
index 280dde2..01ac7e2 100644
--- a/mk/toolchain/gcc/rte.toolchain-compat.mk
+++ b/mk/toolchain/gcc/rte.toolchain-compat.mk
@@ -60,6 +60,7 @@ else
 #
 	ifeq ($(shell test $(GCC_VERSION) -le 49 && echo 1), 1)
 		MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc,-march=armv8-a+crc -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
+		MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc+crypto,-march=armv8-a+crc+crypto -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
 	endif
 	ifeq ($(shell test $(GCC_VERSION) -le 47 && echo 1), 1)
 		MACHINE_CFLAGS := $(patsubst -march=core-avx-i,-march=corei7-avx,$(MACHINE_CFLAGS))
-- 
2.7.4