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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2023-2026 Intel Corporation */
#ifndef _ISSEI_HOST_CLIENT_H_
#define _ISSEI_HOST_CLIENT_H_
#include <linux/types.h>
#include <linux/uuid.h>
#include <linux/wait.h>
struct file;
struct issei_device;
struct issei_fw_client;
/**
* enum issei_host_client_state - host client states
* @ISSEI_HOST_CL_STATE_DISCONNECTED: host client is disconnected
* @ISSEI_HOST_CL_STATE_CONNECTED: host client is connected
*/
enum issei_host_client_state {
ISSEI_HOST_CL_STATE_DISCONNECTED,
ISSEI_HOST_CL_STATE_CONNECTED,
};
/**
* struct issei_host_client - represents host client
* @list: link in host clients list
* @idev: issei parent device
* @id: host client id
* @fp: file associated with client
*
* @write_wait: waitqueue for pending write data
* @write_in_progress: indicator for write in process
*
* @state: host client state
* @fw_cl: pointer to firmware client, if connected
*
* @read_wait: waitqueue for read object
* @read_data: received data pointer
* @read_data_size: received data size
*/
struct issei_host_client {
struct list_head list;
struct issei_device *idev;
u16 id;
const struct file *fp;
wait_queue_head_t write_wait;
bool write_in_progress;
enum issei_host_client_state state;
struct issei_fw_client *fw_cl;
wait_queue_head_t read_wait;
u8 *read_data;
size_t read_data_size;
};
struct issei_host_client *issei_cl_create(struct issei_device *idev, struct file *fp);
void issei_cl_remove(struct issei_host_client *cl);
int issei_cl_connect(struct issei_host_client *cl, const uuid_t *uuid, u32 *mtu, u8 *ver,
u32 *flags);
int issei_cl_disconnect(struct issei_host_client *cl);
void issei_cl_all_disconnect(struct issei_device *idev);
ssize_t issei_cl_write(struct issei_host_client *cl, const u8 *buf, size_t buf_size);
int issei_cl_write_from_queue(struct issei_device *idev);
int issei_cl_read_buf(struct issei_device *idev, u16 fw_id, u16 host_id, u8 *buf, size_t buf_size);
ssize_t issei_cl_read(struct issei_host_client *cl, u8 **buf, size_t buf_size);
int issei_cl_check_read(struct issei_host_client *cl);
int issei_cl_check_write(struct issei_host_client *cl);
void issei_cl_clean_all_wbuf(struct issei_host_client *cl);
#endif /* ISSEI_HOST_CLIENT_H_ */
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