linux-kernel - [PATCH 0/3] Add Zhaoxin hardware engine driver support for SHA

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Date: Tue, 16 Jan 2024 14:35:46 +0800
From: Tony W Wang-oc <TonyWWang-oc@...oxin.com>
To: <675146817@...com>, <story_19872006@....com>,
	<herbert@...dor.apana.org.au>, <davem@...emloft.net>,
	<linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
	<dave.hansen@...ux.intel.com>, <x86@...nel.org>, <hpa@...or.com>,
	<seanjc@...gle.com>, <kim.phillips@....com>,
	<kirill.shutemov@...ux.intel.com>, <jmattson@...gle.com>,
	<babu.moger@....com>, <kai.huang@...el.com>, <TonyWWang-oc@...oxin.com>,
	<acme@...hat.com>, <aik@....com>, <namhyung@...nel.org>
CC: <CobeChen@...oxin.com>, <TimGuo@...oxin.com>, <LeoLiu-oc@...oxin.com>,
	<GeorgeXue@...oxin.com>
Subject: [PATCH 0/3] Add Zhaoxin hardware engine driver support for SHA

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