Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright (c) 2025 Intel Corporation
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*/
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#ifndef _INTEL_LB_MEI_INTERFACE_H_
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#define _INTEL_LB_MEI_INTERFACE_H_
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#include <linux/types.h>
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struct device;
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/**
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* define INTEL_LB_FLAG_IS_PERSISTENT - Mark the payload as persistent
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*
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* This flag indicates that the late binding payload should be stored
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* persistently in flash across warm resets.
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*/
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#define INTEL_LB_FLAG_IS_PERSISTENT BIT(0)
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/**
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* enum intel_lb_type - enum to determine late binding payload type
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* @INTEL_LB_TYPE_FAN_CONTROL: Fan controller configuration
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*/
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enum intel_lb_type {
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INTEL_LB_TYPE_FAN_CONTROL = 1,
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};
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/**
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* enum intel_lb_status - Status codes returned on late binding transmissions
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* @INTEL_LB_STATUS_SUCCESS: Operation completed successfully
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* @INTEL_LB_STATUS_4ID_MISMATCH: Mismatch in the expected 4ID (firmware identity/token)
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* @INTEL_LB_STATUS_ARB_FAILURE: Arbitration failure (e.g. conflicting access or state)
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* @INTEL_LB_STATUS_GENERAL_ERROR: General firmware error not covered by other codes
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* @INTEL_LB_STATUS_INVALID_PARAMS: One or more input parameters are invalid
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* @INTEL_LB_STATUS_INVALID_SIGNATURE: Payload has an invalid or untrusted signature
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* @INTEL_LB_STATUS_INVALID_PAYLOAD: Payload contents are not accepted by firmware
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* @INTEL_LB_STATUS_TIMEOUT: Operation timed out before completion
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*/
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enum intel_lb_status {
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INTEL_LB_STATUS_SUCCESS = 0,
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INTEL_LB_STATUS_4ID_MISMATCH = 1,
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INTEL_LB_STATUS_ARB_FAILURE = 2,
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INTEL_LB_STATUS_GENERAL_ERROR = 3,
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INTEL_LB_STATUS_INVALID_PARAMS = 4,
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INTEL_LB_STATUS_INVALID_SIGNATURE = 5,
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INTEL_LB_STATUS_INVALID_PAYLOAD = 6,
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INTEL_LB_STATUS_TIMEOUT = 7,
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};
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/**
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* struct intel_lb_component_ops - Ops for late binding services
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*/
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struct intel_lb_component_ops {
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/**
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* push_payload - Sends a payload to the authentication firmware
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* @dev: Device struct corresponding to the mei device
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* @type: Payload type (see &enum intel_lb_type)
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* @flags: Payload flags bitmap (e.g. %INTEL_LB_FLAGS_IS_PERSISTENT)
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* @payload: Pointer to payload buffer
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* @payload_size: Payload buffer size in bytes
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*
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* Return: 0 success, negative errno value on transport failure,
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* positive status returned by firmware
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*/
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int (*push_payload)(struct device *dev, u32 type, u32 flags,
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const void *payload, size_t payload_size);
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};
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#endif /* _INTEL_LB_MEI_INTERFACE_H_ */
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