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118 lines
3.4 KiB
118 lines
3.4 KiB
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */ |
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/* |
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* Copyright(c) 2003-2015 Intel Corporation. All rights reserved. |
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* Intel Management Engine Interface (Intel MEI) Linux driver |
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* Intel MEI Interface Header |
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*/ |
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#ifndef _LINUX_MEI_H |
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#define _LINUX_MEI_H |
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#include <linux/uuid.h> |
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/* |
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* This IOCTL is used to associate the current file descriptor with a |
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* FW Client (given by UUID). This opens a communication channel |
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* between a host client and a FW client. From this point every read and write |
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* will communicate with the associated FW client. |
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* Only in close() (file_operation release()) the communication between |
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* the clients is disconnected |
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* |
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* The IOCTL argument is a struct with a union that contains |
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* the input parameter and the output parameter for this IOCTL. |
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* |
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* The input parameter is UUID of the FW Client. |
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* The output parameter is the properties of the FW client |
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* (FW protocol version and max message size). |
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* |
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*/ |
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#define IOCTL_MEI_CONNECT_CLIENT \ |
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_IOWR('H' , 0x01, struct mei_connect_client_data) |
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/* |
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* Intel MEI client information struct |
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*/ |
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struct mei_client { |
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__u32 max_msg_length; |
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__u8 protocol_version; |
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__u8 reserved[3]; |
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}; |
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/* |
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* IOCTL Connect Client Data structure |
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*/ |
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struct mei_connect_client_data { |
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union { |
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uuid_le in_client_uuid; |
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struct mei_client out_client_properties; |
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}; |
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}; |
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/** |
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* DOC: set and unset event notification for a connected client |
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* |
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* The IOCTL argument is 1 for enabling event notification and 0 for |
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* disabling the service |
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* Return: -EOPNOTSUPP if the devices doesn't support the feature |
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*/ |
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#define IOCTL_MEI_NOTIFY_SET _IOW('H', 0x02, __u32) |
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/** |
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* DOC: retrieve notification |
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* |
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* The IOCTL output argument is 1 if an event was is pending and 0 otherwise |
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* the ioctl has to be called in order to acknowledge pending event |
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* |
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* Return: -EOPNOTSUPP if the devices doesn't support the feature |
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*/ |
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#define IOCTL_MEI_NOTIFY_GET _IOR('H', 0x03, __u32) |
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/** |
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* struct mei_connect_client_vtag - mei client information struct with vtag |
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* |
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* @in_client_uuid: UUID of client to connect |
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* @vtag: virtual tag |
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* @reserved: reserved for future use |
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*/ |
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struct mei_connect_client_vtag { |
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uuid_le in_client_uuid; |
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__u8 vtag; |
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__u8 reserved[3]; |
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}; |
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/** |
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* struct mei_connect_client_data_vtag - IOCTL connect data union |
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* |
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* @connect: input connect data |
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* @out_client_properties: output client data |
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*/ |
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struct mei_connect_client_data_vtag { |
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union { |
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struct mei_connect_client_vtag connect; |
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struct mei_client out_client_properties; |
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}; |
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}; |
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/** |
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* DOC: |
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* This IOCTL is used to associate the current file descriptor with a |
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* FW Client (given by UUID), and virtual tag (vtag). |
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* The IOCTL opens a communication channel between a host client and |
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* a FW client on a tagged channel. From this point on, every read |
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* and write will communicate with the associated FW client with |
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* on the tagged channel. |
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* Upone close() the communication is terminated. |
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* |
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* The IOCTL argument is a struct with a union that contains |
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* the input parameter and the output parameter for this IOCTL. |
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* |
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* The input parameter is UUID of the FW Client, a vtag [0,255] |
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* The output parameter is the properties of the FW client |
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* (FW protocool version and max message size). |
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* |
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* Clients that do not support tagged connection |
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* will respond with -EOPNOTSUPP. |
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*/ |
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#define IOCTL_MEI_CONNECT_CLIENT_VTAG \ |
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_IOWR('H', 0x04, struct mei_connect_client_data_vtag) |
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#endif /* _LINUX_MEI_H */
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