On 29/08/2025 00:31, Stefano Stabellini wrote:
> On Thu, 28 Aug 2025, Oleksii Moisieiev wrote:
>> This patch adds the basic framework for ARM SCI mediator. SCI is System
>> Control Interface, which is designed to redirect requests from the Domains
>> to ARM specific Firmware (for example SCMI). This will allow the devices,
>> passed-through to the different Domains, to access to the System resources
>> (such as clocks/resets etc) by sending requests to the firmware.
>>
>> ARM SCI subsystem allows to implement different SCI drivers to handle
>> specific ARM firmware interfaces (like ARM SCMI) and mediate requests
>> -between the Domains and the Firmware. Also it allows SCI drivers to perform
>> proper action during Domain creation/destruction which is vital for
>> handling use cases like Domain reboot.
>>
>> This patch introduces new DEVICE_FIRMWARE device subclass for probing SCI
>> drivers basing on device tree, SCI drivers register itself with
>> DT_DEVICE_START/END macro. On init - the SCI drivers should register its
>> SCI ops with sci_register(). Only one SCI driver can be supported.
>>
>> At run-time, the following SCI API calls are introduced:
>>
>> - sci_domain_sanitise_config() called from arch_sanitise_domain_config()
>> - sci_domain_init() called from arch_domain_create()
>> - sci_relinquish_resources() called from domain_relinquish_resources()
>> - sci_domain_destroy() called from arch_domain_destroy()
>> - sci_handle_call() called from vsmccc_handle_call()
>> - sci_dt_handle_node()
>> - sci_dt_finalize() called from handle_node() (Dom0 DT)
>>
>> Signed-off-by: Oleksii Moisieiev <oleksii_moisie...@epam.com>
>> Signed-off-by: Grygorii Strashko <grygorii_stras...@epam.com>
>> Reviewed-by: Stefano Stabellini <sstabell...@kernel.org>
> I just want to say that R-b from me is OK
Oh sorry. My bad.
