linux-stable/drivers/crypto/nx/Kconfig
Dan Streetman ed70b479c2 crypto: nx - add hardware 842 crypto comp alg
Add crypto compression alg for 842 hardware compression and decompression,
using the alg name "842" and driver_name "842-nx".

This uses only the PowerPC coprocessor hardware for 842 compression.  It
also uses the hardware for decompression, but if the hardware fails it will
fall back to the 842 software decompression library, so that decompression
never fails (for valid 842 compressed buffers).  A header must be used in
most cases, due to the hardware's restrictions on the buffers being
specifically aligned and sized.

Due to the header this driver adds, compressed buffers it creates cannot be
directly passed to the 842 software library for decompression.  However,
compressed buffers created by the software 842 library can be passed to
this driver for hardware 842 decompression (with the exception of buffers
containing the "short data" template, as lib/842/842.h explains).

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-11 15:06:48 +08:00

63 lines
2.1 KiB
Text

config CRYPTO_DEV_NX_ENCRYPT
tristate "Encryption acceleration support on pSeries platform"
depends on PPC_PSERIES && IBMVIO && !CPU_LITTLE_ENDIAN
default y
select CRYPTO_ALGAPI
select CRYPTO_AES
select CRYPTO_CBC
select CRYPTO_ECB
select CRYPTO_CCM
select CRYPTO_GCM
select CRYPTO_AUTHENC
select CRYPTO_XCBC
select CRYPTO_SHA256
select CRYPTO_SHA512
help
Support for PowerPC Nest (NX) encryption acceleration. This
module supports acceleration for AES and SHA2 algorithms on
the pSeries platform. If you choose 'M' here, this module
will be called nx_crypto.
config CRYPTO_DEV_NX_COMPRESS
tristate "Compression acceleration support"
default y
help
Support for PowerPC Nest (NX) compression acceleration. This
module supports acceleration for compressing memory with the 842
algorithm. One of the platform drivers must be selected also.
If you choose 'M' here, this module will be called nx_compress.
if CRYPTO_DEV_NX_COMPRESS
config CRYPTO_DEV_NX_COMPRESS_PSERIES
tristate "Compression acceleration support on pSeries platform"
depends on PPC_PSERIES && IBMVIO && !CPU_LITTLE_ENDIAN
default y
help
Support for PowerPC Nest (NX) compression acceleration. This
module supports acceleration for compressing memory with the 842
algorithm. This supports NX hardware on the pSeries platform.
If you choose 'M' here, this module will be called nx_compress_pseries.
config CRYPTO_DEV_NX_COMPRESS_POWERNV
tristate "Compression acceleration support on PowerNV platform"
depends on PPC_POWERNV
default y
help
Support for PowerPC Nest (NX) compression acceleration. This
module supports acceleration for compressing memory with the 842
algorithm. This supports NX hardware on the PowerNV platform.
If you choose 'M' here, this module will be called nx_compress_powernv.
config CRYPTO_DEV_NX_COMPRESS_CRYPTO
tristate "Compression acceleration cryptographic interface"
select CRYPTO_ALGAPI
select 842_DECOMPRESS
default y
help
Support for PowerPC Nest (NX) accelerators using the cryptographic
API. If you choose 'M' here, this module will be called
nx_compress_crypto.
endif