On Mon, Mar 25, 2024 at 4:11 PM Balint Dobszay <balint.dobszay@arm.com> wrote:
>
> This series introduces a TEE driver for Trusted Services [1].
>
> Trusted Services is a TrustedFirmware.org project that provides a
> framework for developing and deploying device Root of Trust services in
> FF-A [2] Secure Partitions. The project hosts the reference
> implementation of Arm Platform Security Architecture [3] for Arm
> A-profile devices.
>
> The FF-A Secure Partitions are accessible through the FF-A driver in
> Linux. However, the FF-A driver doesn't have a user space interface so
> user space clients currently cannot access Trusted Services. The goal of
> this TEE driver is to bridge this gap and make Trusted Services
> functionality accessible from user space.
>
> Changelog:
> v3[7] -> v4:
> - Remove unnecessary callbacks from tstee_ops
> - Add maintainers entry for the new driver
>
> v2[6] -> v3:
> - Add patch "tee: Refactor TEE subsystem header files" from Sumit
> - Remove unnecessary includes from core.c
> - Remove the mutex from "struct ts_context_data" since the same
> mechanism could be implemented by reusing the XArray's internal lock
> - Rename tee_shm_pool_op_*_helper functions as suggested by Sumit
> - Replace pr_* with dev_* as previously suggested by Krzysztof
>
> v1[5] -> v2:
> - Refactor session handling to use XArray instead of IDR and linked
> list (the linked list was redundant as pointed out by Jens, and IDR
> is now deprecated in favor of XArray)
> - Refactor tstee_probe() to not call tee_device_unregister() before
> calling tee_device_register()
> - Address comments from Krzysztof and Jens
> - Address documentation comments from Randy
> - Use module_ffa_driver() macro instead of separate module init / exit
> functions
> - Reformat max line length 100 -> 80
>
> RFC[4] -> v1:
> - Add patch for moving pool_op helper functions to the TEE subsystem,
> as suggested by Jens
> - Address comments from Sumit, add patch for documentation
>
> [1] https://www.trustedfirmware.org/projects/trusted-services/
> [2] https://developer.arm.com/documentation/den0077/
> [3] https://www.arm.com/architecture/security-features/platform-security
> [4] https://lore.kernel.org/linux-arm-kernel/20230927152145.111777-1-balint.dobszay@arm.com/
> [5] https://lore.kernel.org/lkml/20240213145239.379875-1-balint.dobszay@arm.com/
> [6] https://lore.kernel.org/lkml/20240223095133.109046-1-balint.dobszay@arm.com/
> [7] https://lore.kernel.org/lkml/20240305101745.213933-1-balint.dobszay@arm.com/
>
>
> Balint Dobszay (4):
> tee: optee: Move pool_op helper functions
> tee: tstee: Add Trusted Services TEE driver
> Documentation: tee: Add TS-TEE driver
> MAINTAINERS: tee: tstee: Add entry
>
> Sumit Garg (1):
> tee: Refactor TEE subsystem header files
>
> Documentation/tee/index.rst | 1 +
> Documentation/tee/ts-tee.rst | 71 ++++
> MAINTAINERS | 10 +
> drivers/tee/Kconfig | 1 +
> drivers/tee/Makefile | 1 +
> drivers/tee/amdtee/amdtee_private.h | 2 +-
> drivers/tee/amdtee/call.c | 2 +-
> drivers/tee/amdtee/core.c | 3 +-
> drivers/tee/amdtee/shm_pool.c | 2 +-
> drivers/tee/optee/call.c | 2 +-
> drivers/tee/optee/core.c | 66 +---
> drivers/tee/optee/device.c | 2 +-
> drivers/tee/optee/ffa_abi.c | 8 +-
> drivers/tee/optee/notif.c | 2 +-
> drivers/tee/optee/optee_private.h | 14 +-
> drivers/tee/optee/rpc.c | 2 +-
> drivers/tee/optee/smc_abi.c | 11 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/tee/tee_private.h | 35 --
> drivers/tee/tee_shm.c | 66 +++-
> drivers/tee/tee_shm_pool.c | 2 +-
> drivers/tee/tstee/Kconfig | 11 +
> drivers/tee/tstee/Makefile | 3 +
> drivers/tee/tstee/core.c | 480 ++++++++++++++++++++++++++++
> drivers/tee/tstee/tstee_private.h | 92 ++++++
> include/linux/tee_core.h | 306 ++++++++++++++++++
> include/linux/tee_drv.h | 285 ++---------------
> include/uapi/linux/tee.h | 1 +
> 28 files changed, 1094 insertions(+), 389 deletions(-)
> create mode 100644 Documentation/tee/ts-tee.rst
> create mode 100644 drivers/tee/tstee/Kconfig
> create mode 100644 drivers/tee/tstee/Makefile
> create mode 100644 drivers/tee/tstee/core.c
> create mode 100644 drivers/tee/tstee/tstee_private.h
> create mode 100644 include/linux/tee_core.h
>
> --
> 2.34.1
>
I'm picking up this patch set.
Thanks,
Jens