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    Subject[PATCH v5 0/4] enable CAAM's HWRNG as default
    Date
    Everyone:

    This series is a continuation of original [discussion]. I don't know
    if what's in the series is enough to use CAAMs HWRNG system wide, but
    I am hoping that with enough iterations and feedback it will be.

    Changes since [v1]:

    - Original hw_random replaced with the one using output of TRNG directly

    - SEC4 DRNG IP block exposed via crypto API

    - Small fix regarding use of GFP_DMA added to the series

    Chagnes since [v2]:

    - msleep in polling loop to avoid wasting CPU cycles

    - caam_trng_read() bails out early if 'wait' is set to 'false'

    - fixed typo in ZII's name

    Changes since [v3]:

    - DRNG's .cra_name is now "stdrng"

    - collected Reviewd-by tag from Lucas

    - typo fixes in commit messages of the series

    Changes since [v4]:

    - Dropped "crypto: caam - RNG4 TRNG errata" and "crypto: caam -
    enable prediction resistance in HRWNG" to limit the scope of the
    series. Those two patches are not yet ready and can be submitted
    separately later.

    - Collected Tested-by from Chris

    Feedback is welcome!

    Thanks,
    Andrey Smirnov

    [discussion] https://patchwork.kernel.org/patch/9850669/
    [v1] https://lore.kernel.org/lkml/20191029162916.26579-1-andrew.smirnov@gmail.com
    [v2] https://lore.kernel.org/lkml/20191118153843.28136-1-andrew.smirnov@gmail.com
    [v3] https://lore.kernel.org/lkml/20191120165341.32669-1-andrew.smirnov@gmail.com
    [v4] https://lore.kernel.org/lkml/20191121155554.1227-1-andrew.smirnov@gmail.com

    Andrey Smirnov (4):
    crypto: caam - allocate RNG instantiation descriptor with GFP_DMA
    crypto: caam - move RNG presence check into a shared function
    crypto: caam - replace DRNG with TRNG for use with hw_random
    crypto: caam - expose SEC4 DRNG via crypto RNG API

    drivers/crypto/caam/Kconfig | 15 +-
    drivers/crypto/caam/Makefile | 3 +-
    drivers/crypto/caam/caamrng.c | 358 ----------------------------------
    drivers/crypto/caam/ctrl.c | 10 +-
    drivers/crypto/caam/drng.c | 174 +++++++++++++++++
    drivers/crypto/caam/intern.h | 32 ++-
    drivers/crypto/caam/jr.c | 3 +-
    drivers/crypto/caam/regs.h | 11 +-
    drivers/crypto/caam/trng.c | 89 +++++++++
    9 files changed, 320 insertions(+), 375 deletions(-)
    delete mode 100644 drivers/crypto/caam/caamrng.c
    create mode 100644 drivers/crypto/caam/drng.c
    create mode 100644 drivers/crypto/caam/trng.c

    --
    2.21.0

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