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7e0880b9fb
Offload split key generation in CAAM engine, using DKP. DKP is supported starting with Era 6. Note that the way assoclen is transmitted from the job descriptor to the shared descriptor changes - DPOVRD register is used instead of MATH3 (where available), since DKP protocol thrashes the MATH registers. The replacement of MDHA split key generation with DKP has the side effect of the crypto engine writing the authentication key, and thus the DMA mapping direction for the buffer holding the key has to change from DMA_TO_DEVICE to DMA_BIDIRECTIONAL. There are two cases: -key is inlined in descriptor - descriptor buffer mapping changes -key is referenced - key buffer mapping changes Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.