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      1 /*	$NetBSD: dmover_io.h,v 1.4 2017/10/28 06:27:32 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2002, 2003 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _DMOVER_DMOVER_IO_H_
     39 #define _DMOVER_DMOVER_IO_H_
     40 
     41 #include <sys/types.h>
     42 #include <sys/ioccom.h>
     43 #include <sys/uio.h>
     44 
     45 typedef struct {
     46 	struct iovec *dmbuf_iov;
     47 	u_int dmbuf_iovcnt;
     48 } dmio_buffer;
     49 
     50 /*
     51  * dmio_usrreq:
     52  *
     53  *	Request structure passed from user-space.
     54  */
     55 struct dmio_usrreq {
     56 	/* Output buffer. */
     57 	dmio_buffer req_outbuf;
     58 
     59 	/*
     60 	 * General purpose immediate value.  Can be used as an
     61 	 * input, output, or both, depending on the function.
     62 	 * The output is transmitted via the usrresp structure.
     63 	 */
     64 	uint8_t req_immediate[8];
     65 
     66 	/* Input buffer. */
     67 	dmio_buffer *req_inbuf;
     68 
     69 	uint32_t req_id;	/* request ID; passed in response */
     70 };
     71 
     72 /*
     73  * dmio_usrresp:
     74  *
     75  *	Response structure passed to user-space.
     76  */
     77 struct dmio_usrresp {
     78 	uint32_t resp_id;	/* request ID */
     79 	int resp_error;		/* error, 0 if success */
     80 	uint8_t resp_immediate[8];
     81 };
     82 
     83 /*
     84  * DMIO_SETFUNC:
     85  *
     86  *	Ioctl to set the function type for the session.
     87  */
     88 #define	DMIO_SETFUNC		 _IOW('D', 0, struct dmio_setfunc)
     89 
     90 #define	DMIO_MAX_FUNCNAME	64
     91 struct dmio_setfunc {
     92 	char dsf_name[DMIO_MAX_FUNCNAME];
     93 };
     94 
     95 #endif /* _DMOVER_DMOVER_IO_H_ */
     96