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dmavar.h revision 1.5 
      1 /*	$NetBSD: dmavar.h,v 1.5 1995/03/28 18:16:03 jtc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)dmavar.h	8.1 (Berkeley) 6/10/93
     36  */
     37 
     38 /* dmago flags */
     39 #define	DMAGO_BYTE	0x00	/* do byte (8 bit) transfers */
     40 #define	DMAGO_WORD	0x01	/* do word (16 bit) transfers */
     41 #define	DMAGO_LWORD	0x02	/* do longword (32 bit) transfers */
     42 #define	DMAGO_PRI	0x04	/* do "priority" DMA */
     43 #define	DMAGO_READ	0x08	/* transfer is a read */
     44 #define	DMAGO_NOINT	0x80	/* don't interrupt on completion */
     45 
     46 /* dma "controllers" (channels) */
     47 #define	DMA0		0x1
     48 #define	DMA1		0x2
     49 
     50 #ifdef _KERNEL
     51 extern void	dmago(), dmafree();
     52 extern int	dmareq();
     53 #endif
     54