staging/mei: mei.h defining user space interface

/*

  Intel Management Engine Interface (Intel MEI) Linux driver

  Intel MEI Interface Header

  This file is provided under a dual BSD/GPLv2 license.  When using or

  redistributing this file, you may do so under either license.

  GPL LICENSE SUMMARY

  Copyright(c) 2003-2011 Intel Corporation. All rights reserved.

  This program is free software; you can redistribute it and/or modify

  it under the terms of version 2 of the GNU General Public License as

  published by the Free Software Foundation.

  This program is distributed in the hope that 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.

  Contact Information:

	  Intel Corporation.

	  linux-mei@linux.intel.com

	  http://www.intel.com

  BSD LICENSE

  Copyright(c) 2003-2011 Intel Corporation. All rights reserved.

  All rights reserved.

  Redistribution and use in source and binary forms, with or without

  modification, are permitted provided that the following conditions

  are met:

    * Redistributions of source code must retain the above copyright

      notice, this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above copyright

      notice, this list of conditions and the following disclaimer in

      the documentation and/or other materials provided with the

      distribution.

    * Neither the name of Intel Corporation nor the names of its

      contributors may be used to endorse or promote products derived

      from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#ifndef _LINUX_MEI_H

#define _LINUX_MEI_H

#include <linux/uuid.h>

/*

 * This IOCTL is used to associate the current file descriptor with a

 * FW Client (given by UUID). This opens a communication channel

 * between a host client and a FW client. From this point every read and write

 * will communicate with the associated FW client.

 * Only in close() (file_operation release()) the communication between

 * the clients is disconnected

 *

 * The IOCTL argument is a struct with a union the contains

 * the input parameter and the output parameter for this IOCTL.

 *

 * The input parameter is UUID of the FW Client.

 * The output parameter is the properties of the FW client

 * (FW protocol version and max message size).

 *

 */

#define IOCTL_MEI_CONNECT_CLIENT \

	_IOWR('H' , 0x01, struct mei_connect_client_data)

/*

 * Intel MEI client information struct

 */

struct mei_client {

	__u32 max_msg_length;

	__u8 protocol_version;

	__u8 reserved[3];

};

/*

 * IOCTL Connect Client Data structure

 */

struct mei_connect_client_data {

	union {

		uuid_le in_client_uuid;

		struct mei_client out_client_properties;

	};

};

#endif /* _LINUX_MEI_H  */