From b01df1c16c9a6f7a14f843d3ac6b9eef5a7bb17e Mon Sep 17 00:00:00 2001 From: Daniel Axtens Date: Wed, 15 Mar 2017 23:37:36 +1100 Subject: crypto: powerpc - Add CRC-T10DIF acceleration T10DIF is a CRC16 used heavily in NVMe. It turns out we can accelerate it with a CRC32 library and a few little tricks. Provide the accelerator based the refactored CRC32 code. Cc: Anton Blanchard Thanks-to: Hong Bo Peng Signed-off-by: Daniel Axtens Signed-off-by: Herbert Xu --- crypto/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'crypto/Kconfig') diff --git a/crypto/Kconfig b/crypto/Kconfig index f37e9cca50e1..9cf63dd84364 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -513,6 +513,15 @@ config CRYPTO_CRCT10DIF_PCLMUL 'crct10dif-plcmul' module, which is faster when computing the crct10dif checksum as compared with the generic table implementation. +config CRYPTO_CRCT10DIF_VPMSUM + tristate "CRC32T10DIF powerpc64 hardware acceleration" + depends on PPC64 && ALTIVEC && CRC_T10DIF + select CRYPTO_HASH + help + CRC10T10DIF algorithm implemented using vector polynomial + multiply-sum (vpmsum) instructions, introduced in POWER8. Enable on + POWER8 and newer processors for improved performance. + config CRYPTO_GHASH tristate "GHASH digest algorithm" select CRYPTO_GF128MUL -- cgit v1.2.3-55-g7522