2 Commits

Author	SHA1	Message	Date
Sudeep Holla	3bbfe98710	firmware: arm_ffa: Add initial Arm FFA driver support ... This just add a basic driver that sets up the transport(e.g. SMCCC), checks the FFA version implemented, get the partition ID for self and sets up the Tx/Rx buffers for communication. Link: https://lore.kernel.org/r/20210521151033.181846-3-sudeep.holla@arm.com Tested-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>	2021-05-26 22:36:46 +01:00
Sudeep Holla	e781858488	firmware: arm_ffa: Add initial FFA bus support for device enumeration ... 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 <jens.wiklander@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>	2021-05-26 22:36:46 +01:00