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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_INTERFACE_H_
#define _MEI_INTERFACE_H_
#include <linux/mei.h>
#include "mei_dev.h"
#define AMT_WD_DEFAULT_TIMEOUT 120 /* seconds */
#define AMT_WD_MIN_TIMEOUT 120 /* seconds */
#define AMT_WD_MAX_TIMEOUT 65535 /* seconds */
#define MEI_WATCHDOG_DATA_SIZE 16
#define MEI_START_WD_DATA_SIZE 20
#define MEI_WD_PARAMS_SIZE 4
void mei_read_slots(struct mei_device *dev,
unsigned char *buffer,
unsigned long buffer_length);
int mei_write_message(struct mei_device *dev,
struct mei_msg_hdr *header,
unsigned char *write_buffer,
unsigned long write_length);
bool mei_hbuf_is_empty(struct mei_device *dev);
int mei_hbuf_empty_slots(struct mei_device *dev);
static inline size_t mei_hbuf_max_data(const struct mei_device *dev)
{
return dev->hbuf_depth * sizeof(u32) - sizeof(struct mei_msg_hdr);
}
/* get slots (dwords) from a message length + header (bytes) */
static inline unsigned char mei_data2slots(size_t length)
{
return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4);
}
int mei_count_full_read_slots(struct mei_device *dev);
int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl);
int mei_wd_send(struct mei_device *dev);
int mei_wd_stop(struct mei_device *dev, bool preserve);
int mei_wd_host_init(struct mei_device *dev);
/*
* mei_watchdog_register - Registering watchdog interface
* once we got connection to the WD Client
* @dev - mei device
*/
void mei_watchdog_register(struct mei_device *dev);
/*
* mei_watchdog_unregister - Unregistering watchdog interface
* @dev - mei device
*/
void mei_watchdog_unregister(struct mei_device *dev);
int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl);
int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl);
int mei_disconnect(struct mei_device *dev, struct mei_cl *cl);
int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl);
int mei_connect(struct mei_device *dev, struct mei_cl *cl);
#endif /* _MEI_INTERFACE_H_ */
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