Refactor the driver to use the new Trusted Services RPC ABI. Remove the
capabilty of handling multiple RPC ABIs based on SP UUID, the scope of
the driver is Trusted Services only so this feature is not needed.
Change the user space interface to get aligned with the requirements of
the new RPC mechanism.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I29d4d4a2790568b85e8f2d5f1f631f1dc2c73acb

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: Ifa6ac7db3240cbd85c55a2b69999a453619e53db

The in-kernel interface of the FF-A driver has changed with the v6.1
kernel release. The FF-A operations are now split into multiple groups,
and instead of using the ffa_dev_ops_get() function now the ops struct
can be reached directly.

This patch introduces wrapper functions around the FF-A operations to
enable using the new in-kernel interface in a backwards compatible way.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I0dc2b3eaa46516c071d75f12211a1ee68083fb2e

Add the Secure Enclave Proxy SP [1] UUID to the driver's compatibility
list. This enables communicating with the SP, since it uses the TS RPC
protocol no further changes are necessary.

Link: [1]: https://git.trustedfirmware.org/TS/trusted-services.git/tree/deployments/se-proxy?h=integration


Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I5f318b22f1659e9440f83b5660df5d9cd90137c6

Imre Kis authored Aug 15, 2022 and Balint Dobszay committed Aug 31, 2022

The tee shm pool has changed in commit d88e0493a054 of the Linux kernel
in a breaking way. Instead of having a pool manager with two pools now
only a single pool is being used.
This patch adds support for the simplified shm pool while maintaining
compatibility with earlier kernel versions too.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: I7bc8b5e5e1ca8c0552ec9e78023a62cd1ebd154c

Replace the current DebugFS and custom ioctl based FF-A user-space
interface with an implementation which uses the TEE subsystem.
Currently the new TEE driver supports Trusted Services specific
protocol and enables communication with PSA Secure Partitions. The
design allows extending the TEE driver with other protocols in the
future when demand arises.

The main intention of the change is to break away from the
proof-of-concept nature of the previous implementation, coming from
the debug nature of DebugFS (it is disabled in release builds), and
the foreseeable challenges of up-streaming a new user-space API.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: If2a59d5ca15eebeb30dad229fb99207aadc13d93

Jelle Sels authored Oct 14, 2021 and Balint Dobszay committed Aug 31, 2022

During probing, the FF-A device was always set to 32bit even while
running on a 64bit OS. Change this by only setting the device to
32bit if we are running a 32bit system.

Signed-off-by: Jelle Sels <jelle.sels@arm.com>

Pass the required memory region size as an argument, instead of using
hardcoded value.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: Id7d1ee7f87ea635603800978666b64da975997f9

Imre Kis authored May 18, 2021 and Balint Dobszay committed Aug 31, 2022

Shared memory regions are referenced by the memory handle instead of
the destination ID.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: Id10ba15322a62bbda3694c007ba6fb63ca7f693a

This module is a generic test component, which doesn't contain any
specific code for a specific SP. Therefore having the compatible SP
UUIDs hardcoded is a drawback. This commit enables defining the UUIDs
(which can be bound to this driver) when loading the module. Example:

insmod arm-ffa-user.ko uuid_str_list=\
"d9df52d5-16a2-4bb2-9aa4-d26d3b84e8c0",\
"dc1eef48-b17a-4ccf-ac8b-dfcff7711b14"

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I5861ac2c1d8f1d8c6704b1abb3a44391d4834568

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: Ie397323ec83babb0d7c5d6db455ea9b855c1fd5d

This contains non backwards compatible changes to the user space API,
therefore the module version major number is increased.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: Ieb899ed754a8b4ca31720746f1b287bce617418b

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I7b54b0068f39b181feac7cd58c644493f2e65582

The FF-A driver operations are currently not accessible from user
space. This commit adds a thin layer using a DebugFS interface to
expose them. It is a temporary workaround for the OP-TEE team,
prototyping S-EL0 Secure Partitions and OP-TEE as S-EL1 SPMC.

Change-Id: Ic15a3acf07d74139b37af4aee3a69de634056ba6
Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>

Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>