The Axiado AX3005 SoC has an integrated root-of-trust (IRoT)
co-processor next to the application processor. Security protocols such
as SPDM and PLDM run between the two over MCTP. This series adds a
transport for that link, so the host side uses ordinary AF_MCTP
sockets.
The link is built from two channels of the AX3005 mailbox controller,
which is already supported (drivers/mailbox/axiado-mailbox.c, in the
base of this series), and a no-map reserved-memory carve-out. The
mailbox carries small doorbell and ACK messages. The packets
themselves go through two windows in the carve-out, one per direction,
which the IRoT firmware allocates and reports at probe time. Each
direction has one packet in flight, and every packet is acknowledged
with a counter.
Patch 1 adds the devicetree binding and a MAINTAINERS entry.
Patch 2 adds the driver.
This is v1; there are no earlier revisions.
To: Sammai Chakravarthy <redacted>
To: Prasad Bolisetty <pbolisetty@axiado.com>
To: Andrew Lunn <andrew+netdev@lunn.ch>
To: "David S. Miller" <davem@davemloft.net>
To: Eric Dumazet <redacted>
To: Jakub Kicinski <kuba@kernel.org>
To: Paolo Abeni <pabeni@redhat.com>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Tzu-Hao Wei <twei@axiado.com>
To: Karthikeyan Mitran <kmitran@axiado.com>
To: Jeremy Kerr <jk@codeconstruct.com.au>
To: Matt Johnston <matt@codeconstruct.com.au>
Cc: <redacted>
Cc: <redacted>
Cc: <redacted>
Cc: <redacted>
Cc: <redacted>
Signed-off-by: Akhila Kavi <akavi@axiado.com>
---
Akhila Kavi (2):
dt-bindings: net: Add Axiado AX3005 IRoT MCTP transport
net: mctp: Add Axiado AX3005 IRoT MCTP transport driver
.../bindings/net/axiado,ax3005-mctp-irot.yaml | 60 ++
MAINTAINERS | 9 +
drivers/net/mctp/Kconfig | 17 +
drivers/net/mctp/Makefile | 1 +
drivers/net/mctp/axiado-mctp-irot.c | 1089 ++++++++++++++++++++
5 files changed, 1176 insertions(+)
---
base-commit: aeb76c8f39892c095cf9abcdc90e11627d131935
change-id: 20261026-mctp-transport-irot-ax3005-f0e061cbbd42
Best regards,
--
Akhila Kavi [off-list ref]