From: Jens Wiklander <jens.wiklander@linaro.org>
To: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
op-tee@lists.trustedfirmware.org, devicetree@vger.kernel.org,
linux-doc@vger.kernel.org
Cc: Jerome Forissier <jerome@forissier.org>,
Etienne Carriere <etienne.carriere@linaro.org>,
Sumit Garg <sumit.garg@linaro.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Ard Biesheuvel <ardb@kernel.org>, Marc Zyngier <maz@kernel.org>,
Jens Wiklander <jens.wiklander@linaro.org>
Subject: [PATCH v4 0/6] Asynchronous notifications from secure world
Date: Wed, 18 Aug 2021 12:18:43 +0200 [thread overview]
Message-ID: <20210818101849.602257-1-jens.wiklander@linaro.org> (raw)
Hi all,
This adds support for asynchronous notifications from OP-TEE in secure
world to the OP-TEE driver. This allows a design with a top half and bottom
half type of driver where the top half runs in secure interrupt context and
a notifications tells normal world to schedule a yielding call to do the
bottom half processing.
An edge-triggered interrupt is used to notify the driver that there are
asynchronous notifications pending.
v3->v4:
* Clarfied the expected type of interrypt is edge-triggered, both in
the normal documentation and in the DT bindings as requested.
v2->v3:
* Rebased on v5.14-rc2 which made the patch "dt-bindings: arm: Convert
optee binding to json-schema" from the V2 patch set obsolete.
* Applied Ard's Acked-by on "optee: add asynchronous notifications"
v1->v2:
* Added documentation
* Converted optee bindings to json-schema and added interrupt property
* Configure notification interrupt from DT instead of getting it
from secure world, suggested by Ard Biesheuvel <ardb@kernel.org>.
Thanks,
Jens
Jens Wiklander (6):
docs: staging/tee.rst: add a section on OP-TEE notifications
dt-bindings: arm: optee: add interrupt property
tee: fix put order in teedev_close_context()
tee: add tee_dev_open_helper() primitive
optee: separate notification functions
optee: add asynchronous notifications
.../arm/firmware/linaro,optee-tz.yaml | 7 +
Documentation/staging/tee.rst | 29 +++
drivers/tee/optee/Makefile | 1 +
drivers/tee/optee/call.c | 27 +++
drivers/tee/optee/core.c | 87 +++++--
drivers/tee/optee/notif.c | 226 ++++++++++++++++++
drivers/tee/optee/optee_msg.h | 9 +
drivers/tee/optee/optee_private.h | 23 +-
drivers/tee/optee/optee_rpc_cmd.h | 31 +--
drivers/tee/optee/optee_smc.h | 75 +++++-
drivers/tee/optee/rpc.c | 73 +-----
drivers/tee/tee_core.c | 37 ++-
include/linux/tee_drv.h | 27 +++
13 files changed, 528 insertions(+), 124 deletions(-)
create mode 100644 drivers/tee/optee/notif.c
--
2.31.1
next reply other threads:[~2021-08-18 10:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 10:18 Jens Wiklander [this message]
2021-08-18 10:18 ` [PATCH v4 1/6] docs: staging/tee.rst: add a section on OP-TEE notifications Jens Wiklander
2021-08-18 18:27 ` Marc Zyngier
2021-08-18 10:18 ` [PATCH v4 2/6] dt-bindings: arm: optee: add interrupt property Jens Wiklander
2021-08-18 18:24 ` Marc Zyngier
2021-08-18 18:34 ` Rob Herring
2021-08-18 10:18 ` [PATCH v4 3/6] tee: fix put order in teedev_close_context() Jens Wiklander
2021-08-18 10:18 ` [PATCH v4 4/6] tee: add tee_dev_open_helper() primitive Jens Wiklander
2021-08-18 10:18 ` [PATCH v4 5/6] optee: separate notification functions Jens Wiklander
2021-08-18 10:18 ` [PATCH v4 6/6] optee: add asynchronous notifications Jens Wiklander
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