/*      $NetBSD: dmover_io.h,v 1.4 2017/10/28 06:27:32 riastradh Exp $  */

/*
* Copyright (c) 2002, 2003 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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 _DMOVER_DMOVER_IO_H_
#define _DMOVER_DMOVER_IO_H_

#include <sys/types.h>
#include <sys/ioccom.h>
#include <sys/uio.h>

typedef struct {
       struct iovec *dmbuf_iov;
       u_int dmbuf_iovcnt;
} dmio_buffer;

/*
* dmio_usrreq:
*
*      Request structure passed from user-space.
*/
struct dmio_usrreq {
       /* Output buffer. */
       dmio_buffer req_outbuf;

       /*
        * General purpose immediate value.  Can be used as an
        * input, output, or both, depending on the function.
        * The output is transmitted via the usrresp structure.
        */
       uint8_t req_immediate[8];

       /* Input buffer. */
       dmio_buffer *req_inbuf;

       uint32_t req_id;        /* request ID; passed in response */
};

/*
* dmio_usrresp:
*
*      Response structure passed to user-space.
*/
struct dmio_usrresp {
       uint32_t resp_id;       /* request ID */
       int resp_error;         /* error, 0 if success */
       uint8_t resp_immediate[8];
};

/*
* DMIO_SETFUNC:
*
*      Ioctl to set the function type for the session.
*/
#define DMIO_SETFUNC             _IOW('D', 0, struct dmio_setfunc)

#define DMIO_MAX_FUNCNAME       64
struct dmio_setfunc {
       char dsf_name[DMIO_MAX_FUNCNAME];
};

#endif /* _DMOVER_DMOVER_IO_H_ */