From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- Documentation/driver-api/pldmfw/driver-ops.rst | 56 ++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/driver-api/pldmfw/driver-ops.rst (limited to 'Documentation/driver-api/pldmfw/driver-ops.rst') diff --git a/Documentation/driver-api/pldmfw/driver-ops.rst b/Documentation/driver-api/pldmfw/driver-ops.rst new file mode 100644 index 000000000..f0654783d --- /dev/null +++ b/Documentation/driver-api/pldmfw/driver-ops.rst @@ -0,0 +1,56 @@ +.. SPDX-License-Identifier: GPL-2.0-only + +========================= +Driver-specific callbacks +========================= + +The ``pldmfw`` module relies on the device driver for implementing device +specific behavior using the following operations. + +``.match_record`` +----------------- + +The ``.match_record`` operation is used to determine whether a given PLDM +record matches the device being updated. This requires comparing the record +descriptors in the record with information from the device. Many record +descriptors are defined by the PLDM standard, but it is also allowed for +devices to implement their own descriptors. + +The ``.match_record`` operation should return true if a given record matches +the device. + +``.send_package_data`` +---------------------- + +The ``.send_package_data`` operation is used to send the device-specific +package data in a record to the device firmware. If the matching record +provides package data, ``pldmfw`` will call the ``.send_package_data`` +function with a pointer to the package data and with the package data +length. The device driver should send this data to firmware. + +``.send_component_table`` +------------------------- + +The ``.send_component_table`` operation is used to forward component +information to the device. It is called once for each applicable component, +that is, for each component indicated by the matching record. The +device driver should send the component information to the device firmware, +and wait for a response. The provided transfer flag indicates whether this +is the first, last, or a middle component, and is expected to be forwarded +to firmware as part of the component table information. The driver should an +error in the case when the firmware indicates that the component cannot be +updated, or return zero if the component can be updated. + +``.flash_component`` +-------------------- + +The ``.flash_component`` operation is used to inform the device driver to +flash a given component. The driver must perform any steps necessary to send +the component data to the device. + +``.finalize_update`` +-------------------- + +The ``.finalize_update`` operation is used by the ``pldmfw`` library in +order to allow the device driver to perform any remaining device specific +logic needed to finish the update. -- cgit v1.2.3