Zhaoxin CPUs have implemented the SHA(Secure Hash Algorithm) as its CPU
instructions, including SHA1, SHA256, SHA384 and SHA512, which conform
to the Secure Hash Algorithms specified by FIPS 180-3.
With the help of implementation of SHA in hardware instead of software,
can develop applications with higher performance, more security and more
flexibility.
Below table gives a summary of test using the driver tcrypt with different
crypt algorithm drivers on Zhaoxin KH-40000 platform:
---------------------------------------------------------------------------
tcrypt driver 16* 64 256 1024 2048 4096 8192
---------------------------------------------------------------------------
zhaoxin** 442.80 1309.21 3257.53 5221.56 5813.45 6136.39 6264.50***
403:SHA1 generic** 341.44 813.27 1458.98 1818.03 1896.60 1940.71 1939.06
ratio 1.30 1.61 2.23 2.87 3.07 3.16 3.23
---------------------------------------------------------------------------
zhaoxin 451.70 1313.65 2958.71 4658.55 5109.16 5359.08 5459.13
404:SHA256 generic 202.62 463.55 845.01 1070.50 1117.51 1144.79 1155.68
ratio 2.23 2.83 3.50 4.35 4.57 4.68 4.72
---------------------------------------------------------------------------
zhaoxin 350.90 1406.42 3166.16 5736.39 6627.77 7182.01 7429.18
405:SHA384 generic 161.76 654.88 979.06 1350.56 1423.08 1496.57 1513.12
ratio 2.17 2.15 3.23 4.25 4.66 4.80 4.91
---------------------------------------------------------------------------
zhaoxin 334.49 1394.71 3159.93 5728.86 6625.33 7169.23 7407.80
406:SHA512 generic 161.80 653.84 979.42 1351.41 1444.14 1495.35 1518.43
ratio 2.07 2.13 3.23 4.24 4.59 4.79 4.88
---------------------------------------------------------------------------
*: The length of each data block to be processed by one complete SHA
sequence, namely one INIT, multi UPDATEs and one FINAL.
**: Crypt algorithm driver used by tcrypt, "zhaoxin" represents zhaoxin-sha
while "generic" represents the generic software SHA driver.
***: The speed of each crypt algorithm driver processing different length
of data blocks, unit is Mb/s.
The ratio in the table implies the performance of SHA implemented by
zhaoxin-sha driver is much higher than the ones implemented by the generic
software driver of sha1/sha256/sha384/sha512.
In order to support Zhaoxin-sha driver, make padlock-sha driver matches
the CENTAUR CPUs with Family == 6 and add two Zhaoxin Hash Engine
cpufeatures.
Tony W Wang-oc (3):
crypto: padlock-sha: Matches CPU with Family with 6 explicitly
x86/cpufeatures: Add CPU feature flags for Zhaoxin Hash Engine
crypto: Zhaoxin: Hardware Engine Driver for SHA1/256/384/512
arch/x86/include/asm/cpufeatures.h | 4 +-
drivers/crypto/Kconfig | 15 +
drivers/crypto/Makefile | 1 +
drivers/crypto/padlock-sha.c | 2 +-
drivers/crypto/zhaoxin-sha.c | 500 +++++++++++++++++++++++
drivers/crypto/zhaoxin-sha.h | 16 +
tools/arch/x86/include/asm/cpufeatures.h | 4 +-
7 files changed, 539 insertions(+), 3 deletions(-)
create mode 100644 drivers/crypto/zhaoxin-sha.c
create mode 100644 drivers/crypto/zhaoxin-sha.h
--
2.25.1
