From: Horia Geant? <horia.geanta@freescale.com>
Date: Fri, 21 Aug 2015 15:53:20 +0000 (+0300)
Subject: crypto: caam - fix writing to JQCR_MS when using service interface
X-Git-Tag: omap-for-v4.3/fixes-merge-window~29^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9f587fa29f7e8ed6b8885cff51a51ace3ad85152;p=pandora-kernel.git

crypto: caam - fix writing to JQCR_MS when using service interface

Most significant part of JQCR (Job Queue Control Register) contains
bits that control endianness: ILE - Immediate Little Endian,
DWS - Double Word Swap.
The bits are automatically set by the Job Queue Controller HW.

Unfortunately these bits are cleared in SW when submitting descriptors
via the register-based service interface.
>From LS1021A:
JQCR_MS = 08080100 - before writing: ILE | DWS | SRC (JR0)
JQCR_MS = 30000100 - after writing: WHL | FOUR | SRC (JR0)

This would cause problems on little endian caam for descriptors
containing immediata data or double-word pointers.
Currently there is no problem since the only descriptors ran through
this interface are the ones that (un)instantiate RNG.

Signed-off-by: Horia Geant? <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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