user/sven/linux.git/include/linux/arm_ffa.h, branch v5.15.69

firmware: arm_ffa: Add support for MEM_* interfaces

2021-05-26T21:38:43Z

Most of the MEM_* APIs share the same parameters, so they can be generalised. Currently only MEM_SHARE is implemented and the user space interface for that is not added yet. Link: https://lore.kernel.org/r/20210521151033.181846-6-sudeep.holla@arm.com Tested-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Setup in-kernel users of FFA partitions

2021-05-26T21:38:43Z

Parse the FFA nodes from the device-tree and register all the partitions whose services will be used in the kernel. In order to also enable in-kernel users of FFA interface, let us add simple set of operations for such devices. The in-kernel users are registered without the character device interface. Link: https://lore.kernel.org/r/20210521151033.181846-5-sudeep.holla@arm.com Tested-by: Jens Wiklander Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Add initial FFA bus support for device enumeration

2021-05-26T21:36:46Z

The Arm FF for Armv8-A specification has concept of endpoints or partitions. In the Normal world, a partition could be a VM when the Virtualization extension is enabled or the kernel itself. In order to handle multiple partitions, we can create a FFA device for each such partition on a dedicated FFA bus. Similarly, different drivers requiring FFA transport can be registered on the same bus. We can match the device and drivers using UUID. This is mostly for the in-kernel users with FFA drivers. Link: https://lore.kernel.org/r/20210521151033.181846-2-sudeep.holla@arm.com Tested-by: Jens Wiklander Signed-off-by: Sudeep Holla