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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2003-2018, Intel Corporation. All rights reserved.
* Intel Management Engine Interface (Intel MEI) Linux driver
*/
#ifndef _MEI_CLIENT_H_
#define _MEI_CLIENT_H_
#include <linux/types.h>
#include <linux/poll.h>
#include <linux/mei.h>
#include "mei_dev.h"
/*
* reference counting base function
*/
void mei_me_cl_init(struct mei_me_client *me_cl);
void mei_me_cl_put(struct mei_me_client *me_cl);
struct mei_me_client *mei_me_cl_get(struct mei_me_client *me_cl);
void mei_me_cl_add(struct mei_device *dev, struct mei_me_client *me_cl);
void mei_me_cl_del(struct mei_device *dev, struct mei_me_client *me_cl);
struct mei_me_client *mei_me_cl_by_uuid(struct mei_device *dev,
const uuid_le *uuid);
struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
const uuid_le *uuid, u8 client_id);
void mei_me_cl_rm_by_uuid(struct mei_device *dev, const uuid_le *uuid);
void mei_me_cl_rm_by_uuid_id(struct mei_device *dev,
const uuid_le *uuid, u8 id);
void mei_me_cl_rm_all(struct mei_device *dev);
/**
* mei_me_cl_is_active - check whether me client is active in the fw
*
* @me_cl: me client
*
* Return: true if the me client is active in the firmware
*/
static inline bool mei_me_cl_is_active(const struct mei_me_client *me_cl)
{
return !list_empty_careful(&me_cl->list);
}
/**
* mei_me_cl_uuid - return me client protocol name (uuid)
*
* @me_cl: me client
*
* Return: me client protocol name
*/
static inline const uuid_le *mei_me_cl_uuid(const struct mei_me_client *me_cl)
{
return &me_cl->props.protocol_name;
}
/**
* mei_me_cl_ver - return me client protocol version
*
* @me_cl: me client
*
* Return: me client protocol version
*/
static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl)
{
return me_cl->props.protocol_version;
}
/**
* mei_me_cl_max_conn - return me client max number of connections
*
* @me_cl: me client
*
* Return: me client max number of connections
*/
static inline u8 mei_me_cl_max_conn(const struct mei_me_client *me_cl)
{
return me_cl->props.max_number_of_connections;
}
/**
* mei_me_cl_fixed - return me client fixed address, if any
*
* @me_cl: me client
*
* Return: me client fixed address
*/
static inline u8 mei_me_cl_fixed(const struct mei_me_client *me_cl)
{
return me_cl->props.fixed_address;
}
/**
* mei_me_cl_max_len - return me client max msg length
*
* @me_cl: me client
*
* Return: me client max msg length
*/
static inline u32 mei_me_cl_max_len(const struct mei_me_client *me_cl)
{
return me_cl->props.max_msg_length;
}
/*
* MEI IO Functions
*/
void mei_io_cb_free(struct mei_cl_cb *priv_cb);
/*
* MEI Host Client Functions
*/
struct mei_cl *mei_cl_allocate(struct mei_device *dev);
int mei_cl_link(struct mei_cl *cl);
int mei_cl_unlink(struct mei_cl *cl);
struct mei_cl *mei_cl_alloc_linked(struct mei_device *dev);
struct mei_cl_cb *mei_cl_read_cb(const struct mei_cl *cl,
const struct file *fp);
struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
enum mei_cb_file_ops type,
const struct file *fp);
struct mei_cl_cb *mei_cl_enqueue_ctrl_wr_cb(struct mei_cl *cl, size_t length,
enum mei_cb_file_ops type,
const struct file *fp);
int mei_cl_flush_queues(struct mei_cl *cl, const struct file *fp);
/*
* MEI input output function prototype
*/
/**
* mei_cl_is_connected - host client is connected
*
* @cl: host client
*
* Return: true if the host client is connected
*/
static inline bool mei_cl_is_connected(struct mei_cl *cl)
{
return cl->state == MEI_FILE_CONNECTED;
}
/**
* mei_cl_me_id - me client id
*
* @cl: host client
*
* Return: me client id or 0 if client is not connected
*/
static inline u8 mei_cl_me_id(const struct mei_cl *cl)
{
return cl->me_cl ? cl->me_cl->client_id : 0;
}
/**
* mei_cl_mtu - maximal message that client can send and receive
*
* @cl: host client
*
* Return: mtu
*/
static inline size_t mei_cl_mtu(const struct mei_cl *cl)
{
return cl->me_cl->props.max_msg_length;
}
/**
* mei_cl_is_fixed_address - check whether the me client uses fixed address
*
* @cl: host client
*
* Return: true if the client is connected and it has fixed me address
*/
static inline bool mei_cl_is_fixed_address(const struct mei_cl *cl)
{
return cl->me_cl && cl->me_cl->props.fixed_address;
}
/**
* mei_cl_is_single_recv_buf- check whether the me client
* uses single receiving buffer
*
* @cl: host client
*
* Return: true if single_recv_buf == 1; 0 otherwise
*/
static inline bool mei_cl_is_single_recv_buf(const struct mei_cl *cl)
{
return cl->me_cl->props.single_recv_buf;
}
/**
* mei_cl_uuid - client's uuid
*
* @cl: host client
*
* Return: return uuid of connected me client
*/
static inline const uuid_le *mei_cl_uuid(const struct mei_cl *cl)
{
return mei_me_cl_uuid(cl->me_cl);
}
/**
* mei_cl_host_addr - client's host address
*
* @cl: host client
*
* Return: 0 for fixed address client, host address for dynamic client
*/
static inline u8 mei_cl_host_addr(const struct mei_cl *cl)
{
return mei_cl_is_fixed_address(cl) ? 0 : cl->host_client_id;
}
int mei_cl_disconnect(struct mei_cl *cl);
int mei_cl_irq_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct list_head *cmpl_list);
int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
const struct file *file);
int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct list_head *cmpl_list);
int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp);
ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb);
int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
struct list_head *cmpl_list);
void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb);
void mei_host_client_init(struct mei_device *dev);
u8 mei_cl_notify_fop2req(enum mei_cb_file_ops fop);
enum mei_cb_file_ops mei_cl_notify_req2fop(u8 request);
int mei_cl_notify_request(struct mei_cl *cl,
const struct file *file, u8 request);
int mei_cl_irq_notify(struct mei_cl *cl, struct mei_cl_cb *cb,
struct list_head *cmpl_list);
int mei_cl_notify_get(struct mei_cl *cl, bool block, bool *notify_ev);
void mei_cl_notify(struct mei_cl *cl);
void mei_cl_all_disconnect(struct mei_device *dev);
#define MEI_CL_FMT "cl:host=%02d me=%02d "
#define MEI_CL_PRM(cl) (cl)->host_client_id, mei_cl_me_id(cl)
#define cl_dbg(dev, cl, format, arg...) \
dev_dbg((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
#define cl_warn(dev, cl, format, arg...) \
dev_warn((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
#define cl_err(dev, cl, format, arg...) \
dev_err((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
#endif /* _MEI_CLIENT_H_ */
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