Re: [RFC PATCH v4 0/8] xen/arm: scmi: introduce SCI SCMI SMC multi-agent support

[Julien Grall <julien@xxxxxxx>]

Hi Oleksii,

On 19/05/2025 16:50, Oleksii Moisieiev wrote:
> >   MAINTAINERS                                   |   6 +
>   .../arm/firmware/arm-scmi-proposal.rst        | 224 +++++
>   .../arm/firmware/arm-scmi.rst                 | 442 +++++++++
>   docs/hypervisor-guide/arm/index.rst           |   9 +
>   docs/hypervisor-guide/index.rst               |   1 +
>   docs/man/xl.cfg.5.pod.in                      |  47 +
>   docs/misc/arm/device-tree/booting.txt         |  75 ++
>   docs/misc/xen-command-line.pandoc             |  18 +
>   tools/include/libxl.h                         |   5 +
>   tools/libs/light/libxl_arm.c                  |  18 +
>   tools/libs/light/libxl_types.idl              |  12 +
>   tools/xl/xl_parse.c                           |  48 +
>   xen/arch/arm/device.c                         |   5 +
>   xen/arch/arm/dom0less-build.c                 |  49 +
>   xen/arch/arm/domain.c                         |  12 +-
>   xen/arch/arm/domain_build.c                   |  11 +-
>   xen/arch/arm/firmware/Kconfig                 |  36 +-
>   xen/arch/arm/firmware/Makefile                |   2 +
>   xen/arch/arm/firmware/sci.c                   | 191 ++++
>   xen/arch/arm/firmware/scmi-proto.h            | 164 ++++
>   xen/arch/arm/firmware/scmi-shmem.c            | 173 ++++
>   xen/arch/arm/firmware/scmi-shmem.h            |  45 +
>   xen/arch/arm/firmware/scmi-smc-multiagent.c   | 860 ++++++++++++++++++
>   xen/arch/arm/firmware/scmi-smc.c              | 191 +++-
>   xen/arch/arm/include/asm/domain.h             |   5 +
>   xen/arch/arm/include/asm/firmware/sci.h       | 214 +++++
>   xen/arch/arm/include/asm/firmware/scmi-smc.h  |  41 -
>   xen/arch/arm/vsmc.c                           |   4 +-
>   xen/common/domctl.c                           |  19 +
>   xen/drivers/passthrough/device_tree.c         |   6 +
>   xen/include/asm-generic/device.h              |   1 +
>   xen/include/public/arch-arm.h                 |   8 +
>   32 files changed, 2856 insertions(+), 86 deletions(-)
>   create mode 100644 docs/hypervisor-guide/arm/firmware/arm-scmi-proposal.rst
>   create mode 100644 docs/hypervisor-guide/arm/firmware/arm-scmi.rst
>   create mode 100644 docs/hypervisor-guide/arm/index.rst
>   create mode 100644 xen/arch/arm/firmware/sci.c
>   create mode 100644 xen/arch/arm/firmware/scmi-proto.h
>   create mode 100644 xen/arch/arm/firmware/scmi-shmem.c
>   create mode 100644 xen/arch/arm/firmware/scmi-shmem.h
>   create mode 100644 xen/arch/arm/firmware/scmi-smc-multiagent.c
>   create mode 100644 xen/arch/arm/include/asm/firmware/sci.h
>   delete mode 100644 xen/arch/arm/include/asm/firmware/scmi-smc.h
Looking at the list above, I don't see an update to SUPPORT.md. So I 
believe, this would fall under:
### Arm: SCMI over SMC calls forwarding to EL3 Firmware

Enable SCMI calls using SMC as doorbell mechanism and Shared Memory for
transport ("arm,scmi-smc" compatible only) to reach EL3 Firmware if issued
by hwdom. Some platforms use SCMI for access to system-level resources.

    Status: Supported

I think this should be updated for the multi-agent support to tech preview.

Cheers,


>
--
Julien Grall