From: Boris BREZILLON Date: Thu, 18 Jun 2015 13:46:21 +0000 (+0200) Subject: crypto: marvell/cesa - add TDMA support X-Git-Tag: omap-for-v4.2/fixes-rc1^2~164^2~24 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=db509a45339fd;p=pandora-kernel.git 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 Signed-off-by: Arnaud Ebalard Signed-off-by: Herbert Xu --- Reading git-diff-tree failed