256 lines
7.0 KiB
C
256 lines
7.0 KiB
C
/*
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*
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* Intel Management Engine Interface (Intel MEI) Linux driver
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* Copyright (c) 2003-2012, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#ifndef _MEI_CLIENT_H_
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#define _MEI_CLIENT_H_
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#include <linux/types.h>
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#include <linux/watchdog.h>
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#include <linux/poll.h>
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#include <linux/mei.h>
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#include "mei_dev.h"
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/*
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* reference counting base function
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*/
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void mei_me_cl_init(struct mei_me_client *me_cl);
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void mei_me_cl_put(struct mei_me_client *me_cl);
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struct mei_me_client *mei_me_cl_get(struct mei_me_client *me_cl);
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void mei_me_cl_add(struct mei_device *dev, struct mei_me_client *me_cl);
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void mei_me_cl_del(struct mei_device *dev, struct mei_me_client *me_cl);
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struct mei_me_client *mei_me_cl_by_uuid(struct mei_device *dev,
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const uuid_le *uuid);
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struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
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struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
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const uuid_le *uuid, u8 client_id);
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void mei_me_cl_rm_by_uuid(struct mei_device *dev, const uuid_le *uuid);
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void mei_me_cl_rm_by_uuid_id(struct mei_device *dev,
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const uuid_le *uuid, u8 id);
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void mei_me_cl_rm_all(struct mei_device *dev);
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/**
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* mei_me_cl_is_active - check whether me client is active in the fw
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*
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* @me_cl: me client
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*
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* Return: true if the me client is active in the firmware
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*/
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static inline bool mei_me_cl_is_active(const struct mei_me_client *me_cl)
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{
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return !list_empty_careful(&me_cl->list);
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}
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/**
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* mei_me_cl_uuid - return me client protocol name (uuid)
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*
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* @me_cl: me client
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*
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* Return: me client protocol name
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*/
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static inline const uuid_le *mei_me_cl_uuid(const struct mei_me_client *me_cl)
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{
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return &me_cl->props.protocol_name;
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}
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/**
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* mei_me_cl_ver - return me client protocol version
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*
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* @me_cl: me client
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*
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* Return: me client protocol version
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*/
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static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl)
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{
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return me_cl->props.protocol_version;
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}
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/*
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* MEI IO Functions
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*/
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struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type,
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struct file *fp);
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void mei_io_cb_free(struct mei_cl_cb *priv_cb);
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int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length);
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/**
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* mei_io_list_init - Sets up a queue list.
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*
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* @list: An instance cl callback structure
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*/
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static inline void mei_io_list_init(struct mei_cl_cb *list)
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{
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INIT_LIST_HEAD(&list->list);
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}
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void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl);
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/*
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* MEI Host Client Functions
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*/
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struct mei_cl *mei_cl_allocate(struct mei_device *dev);
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void mei_cl_init(struct mei_cl *cl, struct mei_device *dev);
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int mei_cl_link(struct mei_cl *cl, int id);
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int mei_cl_unlink(struct mei_cl *cl);
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struct mei_cl *mei_cl_alloc_linked(struct mei_device *dev, int id);
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struct mei_cl_cb *mei_cl_read_cb(const struct mei_cl *cl,
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const struct file *fp);
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void mei_cl_read_cb_flush(const struct mei_cl *cl, const struct file *fp);
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struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
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enum mei_cb_file_ops type, struct file *fp);
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int mei_cl_flush_queues(struct mei_cl *cl, const struct file *fp);
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int mei_cl_flow_ctrl_creds(struct mei_cl *cl);
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int mei_cl_flow_ctrl_reduce(struct mei_cl *cl);
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/*
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* MEI input output function prototype
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*/
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/**
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* mei_cl_is_connected - host client is connected
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*
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* @cl: host client
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*
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* Return: true if the host client is connected
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*/
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static inline bool mei_cl_is_connected(struct mei_cl *cl)
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{
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return cl->state == MEI_FILE_CONNECTED;
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}
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/**
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* mei_cl_me_id - me client id
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*
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* @cl: host client
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*
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* Return: me client id or 0 if client is not connected
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*/
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static inline u8 mei_cl_me_id(const struct mei_cl *cl)
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{
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return cl->me_cl ? cl->me_cl->client_id : 0;
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}
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/**
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* mei_cl_mtu - maximal message that client can send and receive
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*
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* @cl: host client
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*
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* Return: mtu
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*/
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static inline size_t mei_cl_mtu(const struct mei_cl *cl)
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{
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return cl->me_cl->props.max_msg_length;
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}
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/**
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* mei_cl_is_fixed_address - check whether the me client uses fixed address
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*
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* @cl: host client
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*
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* Return: true if the client is connected and it has fixed me address
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*/
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static inline bool mei_cl_is_fixed_address(const struct mei_cl *cl)
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{
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return cl->me_cl && cl->me_cl->props.fixed_address;
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}
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/**
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* mei_cl_is_single_recv_buf- check whether the me client
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* uses single receiving buffer
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*
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* @cl: host client
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*
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* Return: true if single_recv_buf == 1; 0 otherwise
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*/
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static inline bool mei_cl_is_single_recv_buf(const struct mei_cl *cl)
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{
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return cl->me_cl->props.single_recv_buf;
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}
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/**
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* mei_cl_uuid - client's uuid
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*
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* @cl: host client
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*
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* Return: return uuid of connected me client
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*/
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static inline const uuid_le *mei_cl_uuid(const struct mei_cl *cl)
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{
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return mei_me_cl_uuid(cl->me_cl);
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}
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/**
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* mei_cl_host_addr - client's host address
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*
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* @cl: host client
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*
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* Return: 0 for fixed address client, host address for dynamic client
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*/
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static inline u8 mei_cl_host_addr(const struct mei_cl *cl)
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{
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return mei_cl_is_fixed_address(cl) ? 0 : cl->host_client_id;
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}
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int mei_cl_disconnect(struct mei_cl *cl);
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void mei_cl_set_disconnected(struct mei_cl *cl);
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int mei_cl_irq_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb,
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struct mei_cl_cb *cmpl_list);
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int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
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struct file *file);
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int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
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struct mei_cl_cb *cmpl_list);
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int mei_cl_read_start(struct mei_cl *cl, size_t length, struct file *fp);
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int mei_cl_irq_read_msg(struct mei_cl *cl, struct mei_msg_hdr *hdr,
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struct mei_cl_cb *cmpl_list);
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int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking);
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int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
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struct mei_cl_cb *cmpl_list);
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void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb);
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void mei_host_client_init(struct work_struct *work);
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u8 mei_cl_notify_fop2req(enum mei_cb_file_ops fop);
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enum mei_cb_file_ops mei_cl_notify_req2fop(u8 request);
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int mei_cl_notify_request(struct mei_cl *cl, struct file *file, u8 request);
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int mei_cl_irq_notify(struct mei_cl *cl, struct mei_cl_cb *cb,
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struct mei_cl_cb *cmpl_list);
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int mei_cl_notify_get(struct mei_cl *cl, bool block, bool *notify_ev);
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void mei_cl_notify(struct mei_cl *cl);
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void mei_cl_all_disconnect(struct mei_device *dev);
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void mei_cl_all_wakeup(struct mei_device *dev);
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void mei_cl_all_write_clear(struct mei_device *dev);
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#define MEI_CL_FMT "cl:host=%02d me=%02d "
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#define MEI_CL_PRM(cl) (cl)->host_client_id, mei_cl_me_id(cl)
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#define cl_dbg(dev, cl, format, arg...) \
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dev_dbg((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
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#define cl_err(dev, cl, format, arg...) \
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dev_err((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
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#endif /* _MEI_CLIENT_H_ */
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