On 5/5/2016 6:34 PM, Horia Geantă wrote:
> v2:
> As suggested by Arnd, patch 1 fixes io{read,write}{16,32}be accessors
> to prevent the case when {read,write}{w,l} are overriden by arch-specific
> ones having barriers, while the BE accessors previously mentioned are not
> (thus behaving differently, having no barriers).
>
> Hi,
>
> [Patches 2-4 add io{read,write}64[be] accessors (generic, arm64, ppc64),
> such that CAAM's accessors in regs.h are simplified a bit.
> Patch 8 adds crypto node for LS1043A platform.
> Let me know if it's ok to go with these through the cryptodev-2.6 tree.]
>
Herbert,
Could you apply the patch set, but without patch 8/8 I guess - since DT
maintainers haven't ack-ed it?
I assume it's too late for 4.7, however applying the patches would solve
dependencies b/w on-going caam development.
Thanks,
Horia
> This is a follow-up on the following RFC patch set:
> crypto: caam - Revamp I/O accessors
> https://www.mail-archive.com/linux-crypto@xxxxxxxxxxxxxxx/msg15878.html
>
> There are platforms such as LS1043A (or LS1012A) where core endianness
> does not match CAAM/SEC endianness (LE vs. BE).
> Add support in caam driver for these cases.
>
> Current patch set detects device endianness at runtime (as opposed to
> compile-time endianness), in order to support multiplatform kernels.
> Detection of device endianness is not device-tree based.
> Instead, SSTA ("SEC STAtus") register has a property such that
> reading it in any endianness and masking it properly, it's possible
> to deduce device endianness.
>
> The performance drop due to the runtime detection is < 1.0%.
> (An alternative implementation using function pointers has been tried,
> but lead to a bigger performance drop.)
>
> Thanks,
> Horia
>
> Cristian Stoica (1):
> crypto: caam - fix offset field in hw sg entries
>
> Horia Geantă (7):
> asm-generic/io.h: allow barriers in io{read,write}{16,32}be
> asm-generic/io.h: add io{read,write}64 accessors
> arm64: add io{read,write}64be accessors
> powerpc: add io{read,write}64 accessors
> crypto: caam - handle core endianness != caam endianness
> crypto: caam - add ARCH_LAYERSCAPE to supported architectures
> arm64: dts: ls1043a: add crypto node
>
> arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts | 4 +
> arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 43 ++++++
> arch/arm64/include/asm/io.h | 4 +-
> arch/powerpc/kernel/iomap.c | 24 ++++
> drivers/crypto/caam/Kconfig | 6 +-
> drivers/crypto/caam/caamhash.c | 5 +-
> drivers/crypto/caam/ctrl.c | 125 +++++++++++-------
> drivers/crypto/caam/desc.h | 9 +-
> drivers/crypto/caam/desc_constr.h | 44 ++++---
> drivers/crypto/caam/jr.c | 22 ++--
> drivers/crypto/caam/pdb.h | 137 +++++++++++++++-----
> drivers/crypto/caam/regs.h | 151 +++++++++++++++-------
> drivers/crypto/caam/sg_sw_sec4.h | 17 +--
> include/asm-generic/io.h | 71 +++++++++-
> include/asm-generic/iomap.h | 8 ++
> 15 files changed, 494 insertions(+), 176 deletions(-)
>
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