• Boris BREZILLON's avatar
    crypto: marvell/cesa - add TDMA support · db509a45
    Boris BREZILLON authored
    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: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
    Signed-off-by: default avatarArnaud Ebalard <arno@natisbad.org>
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    db509a45
cesa.c 11.4 KB