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 Feedback is welcome! Thanks, Andrey Smirnov [discussion] https://patchwork.kernel.org/patch/9850669/ [v1] lore.kernel.org/lkml/20191029162916.26579-1-andrew.smirnov@xxxxxxxxx Andrey Smirnov (6): crypto: caam - RNG4 TRNG errata crypto: caam - enable prediction resistance in HRWNG crypto: caam - allocate RNG instantiation descriptor with GFP_DMA crypto: caam - move RNG presense 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 | 29 ++- drivers/crypto/caam/desc.h | 2 + drivers/crypto/caam/drng.c | 175 +++++++++++++++++ drivers/crypto/caam/intern.h | 32 ++- drivers/crypto/caam/jr.c | 3 +- drivers/crypto/caam/regs.h | 14 +- drivers/crypto/caam/trng.c | 85 ++++++++ 10 files changed, 334 insertions(+), 382 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