diff options
| author | Boris BREZILLON <boris.brezillon@free-electrons.com> | 2015-06-18 15:46:21 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-06-19 22:18:03 +0800 |
| commit | db509a45339fd786de355b11db34ff7421488cb1 (patch) | |
| tree | 163109844167d10b714a722530ed60b81b096f9d /drivers/crypto/Kconfig | |
| parent | f63601fd616ab370774fa00ea10bcaaa9e48e84c (diff) | |
| download | linux-db509a45339fd786de355b11db34ff7421488cb1.tar.bz2 | |
crypto: marvell/cesa - add TDMA support
The CESA IP supports CPU offload through a dedicated DMA engine (TDMA)
which can control the crypto block.
When you use this mode, all the required data (operation metadata and
payload data) are transferred using DMA, and the results are retrieved
through DMA when possible (hash results are not retrieved through DMA yet),
thus reducing the involvement of the CPU and providing better performances
in most cases (for small requests, the cost of DMA preparation might
exceed the performance gain).
Note that some CESA IPs do not embed this dedicated DMA, hence the
activation of this feature on a per platform basis.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/Kconfig')
| -rw-r--r-- | drivers/crypto/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index dbb35bbefaf3..fd69aa04b475 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -184,6 +184,7 @@ config CRYPTO_DEV_MARVELL_CESA help This driver allows you to utilize the Cryptographic Engines and Security Accelerator (CESA) which can be found on the Armada 370. + This driver supports CPU offload through DMA transfers. This driver is aimed at replacing the mv_cesa driver. This will only happen once it has received proper testing. |