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isadmavar.h revision 1.10 
      1 /*	$NetBSD: isadmavar.h,v 1.10 1997/08/04 22:13:33 augustss Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the NetBSD
     22  *	Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 #define MAX_ISADMA	65536
     41 
     42 #define	DMAMODE_WRITE	0
     43 #define	DMAMODE_READ	1
     44 #define	DMAMODE_LOOP	2
     45 
     46 struct proc;
     47 
     48 void	   isa_dmacascade __P((struct device *, int));
     49 
     50 int	   isa_dmamap_create __P((struct device *, int, bus_size_t, int));
     51 void	   isa_dmamap_destroy __P((struct device *, int));
     52 
     53 int	   isa_dmastart __P((struct device *, int, void *, bus_size_t,
     54 	       struct proc *, int, int));
     55 void	   isa_dmaabort __P((struct device *, int));
     56 bus_size_t isa_dmacount __P((struct device *, int));
     57 int	   isa_dmafinished __P((struct device *, int));
     58 void	   isa_dmadone __P((struct device *, int));
     59 
     60 int	   isa_dmamem_alloc __P((struct device *, int, bus_size_t,
     61 	       bus_addr_t *, int));
     62 void	   isa_dmamem_free __P((struct device *, int, bus_addr_t, bus_size_t));
     63 int	   isa_dmamem_map __P((struct device *, int, bus_addr_t, bus_size_t,
     64 	       caddr_t *, int));
     65 void	   isa_dmamem_unmap __P((struct device *, int, caddr_t, size_t));
     66 int	   isa_dmamem_mmap __P((struct device *, int, bus_addr_t, bus_size_t,
     67 	       int, int, int));
     68 
     69 int	   isa_drq_isfree __P((struct device *, int));
     70 
     71 void      *isa_malloc __P((struct device *, int, size_t, int, int));
     72 void	   isa_free __P((void *, int));
     73 int	   isa_mappage __P((void *, int, int));
     74