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/*
*
* Intel Management Engine Interface (Intel MEI) Linux driver
* Copyright (c) 2003-2012, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef _MEI_CLIENT_H_
#define _MEI_CLIENT_H_
#include <linux/types.h>
#include <linux/watchdog.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 IO Functions
*/
struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, struct file *fp);
void mei_io_cb_free(struct mei_cl_cb *priv_cb);
int mei_io_cb_alloc_req_buf(struct mei_cl_cb *cb, size_t length);
int mei_io_cb_alloc_resp_buf(struct mei_cl_cb *cb, size_t length);
/**
* mei_io_list_init - Sets up a queue list.
*
* @list: An instance cl callback structure
*/
static inline void mei_io_list_init(struct mei_cl_cb *list)
{
INIT_LIST_HEAD(&list->list);
}
void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl);
/*
* MEI Host Client Functions
*/
struct mei_cl *mei_cl_allocate(struct mei_device *dev);
void mei_cl_init(struct mei_cl *cl, struct mei_device *dev);
int mei_cl_link(struct mei_cl *cl, int id);
int mei_cl_unlink(struct mei_cl *cl);
int mei_cl_flush_queues(struct mei_cl *cl);
struct mei_cl_cb *mei_cl_find_read_cb(struct mei_cl *cl);
int mei_cl_flow_ctrl_creds(struct mei_cl *cl);
int mei_cl_flow_ctrl_reduce(struct mei_cl *cl);
/*
* MEI input output function prototype
*/
static inline bool mei_cl_is_connected(struct mei_cl *cl)
{
return cl->dev &&
cl->dev->dev_state == MEI_DEV_ENABLED &&
cl->state == MEI_FILE_CONNECTED;
}
static inline bool mei_cl_is_transitioning(struct mei_cl *cl)
{
return MEI_FILE_INITIALIZING == cl->state ||
MEI_FILE_DISCONNECTED == cl->state ||
MEI_FILE_DISCONNECTING == cl->state;
}
bool mei_cl_is_other_connecting(struct mei_cl *cl);
int mei_cl_disconnect(struct mei_cl *cl);
int mei_cl_connect(struct mei_cl *cl, struct file *file);
int mei_cl_read_start(struct mei_cl *cl, size_t length);
int mei_cl_irq_read_msg(struct mei_cl *cl, struct mei_msg_hdr *hdr,
struct mei_cl_cb *cmpl_list);
int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking);
int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list);
void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb);
void mei_host_client_init(struct work_struct *work);
void mei_cl_all_disconnect(struct mei_device *dev);
void mei_cl_all_wakeup(struct mei_device *dev);
void mei_cl_all_write_clear(struct mei_device *dev);
#define MEI_CL_FMT "cl:host=%02d me=%02d "
#define MEI_CL_PRM(cl) (cl)->host_client_id, (cl)->me_client_id
#define cl_dbg(dev, cl, format, arg...) \
dev_dbg((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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