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    Subject[PATCH v4 0/8] Export platform features from ccp driver
    Date
    The i2c-designware-amdpsp driver communicates with a platform
    features mailbox provided by the PSP. The address used for
    communication is discovered via a non-architecturally
    guaranteed mechanism.

    To better scale, export a feature for communication with platform
    features directly from the ccp driver.

    v3->v4
    Drop the ACPI ID as result of confirmation with internal team.
    Future platforms should use doorbell, so will treat Cezanne as quirk
    and assume doorbell going forward.

    Mario Limonciello (8):
    crypto: ccp: Drop TEE support for IRQ handler
    crypto: ccp: Add a header for multiple drivers to use `__psp_pa`
    crypto: ccp: Move some PSP mailbox bit definitions into common header
    crypto: ccp: Add support for an interface for platform features
    crypto: ccp: Enable platform access interface on client PSP parts
    i2c: designware: Use PCI PSP driver for communication
    crypto: ccp: Add support for ringing a platform doorbell
    i2c: designware: Add doorbell support for Skyrim

    arch/x86/kvm/svm/sev.c | 1 +
    drivers/crypto/ccp/Makefile | 3 +-
    drivers/crypto/ccp/platform-access.c | 232 ++++++++++++++++++++
    drivers/crypto/ccp/platform-access.h | 35 +++
    drivers/crypto/ccp/psp-dev.c | 32 +--
    drivers/crypto/ccp/psp-dev.h | 11 +-
    drivers/crypto/ccp/sev-dev.c | 16 +-
    drivers/crypto/ccp/sev-dev.h | 2 +-
    drivers/crypto/ccp/sp-dev.h | 10 +
    drivers/crypto/ccp/sp-pci.c | 9 +
    drivers/crypto/ccp/tee-dev.c | 17 +-
    drivers/i2c/busses/Kconfig | 2 +-
    drivers/i2c/busses/i2c-designware-amdpsp.c | 188 ++++------------
    drivers/i2c/busses/i2c-designware-core.h | 1 -
    drivers/i2c/busses/i2c-designware-platdrv.c | 1 -
    drivers/tee/amdtee/call.c | 2 +-
    drivers/tee/amdtee/shm_pool.c | 2 +-
    include/linux/psp-platform-access.h | 65 ++++++
    include/linux/psp-sev.h | 8 -
    include/linux/psp.h | 29 +++
    20 files changed, 461 insertions(+), 205 deletions(-)
    create mode 100644 drivers/crypto/ccp/platform-access.c
    create mode 100644 drivers/crypto/ccp/platform-access.h
    create mode 100644 include/linux/psp-platform-access.h
    create mode 100644 include/linux/psp.h

    --
    2.34.1

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