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| author | Seth Jennings <sjenning@linux.vnet.ibm.com> | 2012-07-19 09:42:41 -0500 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-08-01 17:47:56 +0800 |
| commit | 35a1fc1873dd6deac6c005ead85424a8ee28183a (patch) | |
| tree | 0d50a0e0bb3e6c5f8b82ed79c98e5d21101df9a0 /crypto/Kconfig | |
| parent | 0e16aafb12046e12effbdaab179fbe1a38427ba9 (diff) | |
| download | linux-35a1fc1873dd6deac6c005ead85424a8ee28183a.tar.gz | |
powerpc/crypto: add 842 crypto driver
This patch add the 842 cryptographic API driver that submits compression requests to the 842 hardware compression accelerator driver (nx-compress). If the hardware accelerator goes offline for any reason (dynamic disable, migration, etc...), this driver will use LZO as a software failover for all future compression requests. For decompression requests, the 842 hardware driver contains a software implementation of the 842 decompressor to support the decompression of data that was compressed before the accelerator went offline. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
| -rw-r--r-- | crypto/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index fe8ed62efe2f..cbcc0e2eeda0 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1039,6 +1039,15 @@ config CRYPTO_LZO help This is the LZO algorithm. +config CRYPTO_842 + tristate "842 compression algorithm" + depends on CRYPTO_DEV_NX_COMPRESS + # 842 uses lzo if the hardware becomes unavailable + select LZO_COMPRESS + select LZO_DECOMPRESS + help + This is the 842 algorithm. + comment "Random Number Generation" config CRYPTO_ANSI_CPRNG |