Hi Jens,
On Thu, 26 Oct 2023 at 13:34, Jens Wiklander jens.wiklander@linaro.org wrote:
Hi all,
This patchset adds support for using FF-A notifications as a delivery mechanism of asynchronous notifications from OP-TEE running in the secure world. Support for asynchronous notifications via the SMC ABI was added in [1], here we add the counterpart needed when using the the FF-A ABI.
Support for FF-A notifications is added with [2] and this patch set is based on Sudeeps tree at [3].
It's good to see FF-A notifications support coming through. The good aspect here is that FF-A uses a common secure world SGI for notifications and doesn't have to deal with platform specific reserved SPI for notifications.
From OP-TEE point of view I think most of the secure SGI donation base would be common, so can we switch the SMC ABI to use this donated secure world SGI for notifications too?
-Sumit
[1] https://lore.kernel.org/lkml/20211103090255.998070-1-jens.wiklander@linaro.o... [2] https://lore.kernel.org/linux-arm-kernel/20231005-ffa_v1-1_notif-v4-0-cddd32... [3] https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git/tag/?... commit bcefd1bf63b1 ("firmware: arm_ffa: Upgrade the driver version to v1.1")
Thanks, Jens
Jens Wiklander (2): optee: provide optee_do_bottom_half() as a common function optee: ffa_abi: add asynchronous notifications
drivers/tee/optee/call.c | 31 ++++++++++- drivers/tee/optee/ffa_abi.c | 91 ++++++++++++++++++++++++++++++- drivers/tee/optee/optee_ffa.h | 28 ++++++++-- drivers/tee/optee/optee_private.h | 9 ++- drivers/tee/optee/smc_abi.c | 36 ++---------- 5 files changed, 153 insertions(+), 42 deletions(-)
base-commit: bcefd1bf63b1ec9bb08067021cf47f0fad96f395
2.34.1