1 /* $OpenBSD: isadmavar.h,v 1.15 2004/04/20 15:04:10 pvalchev Exp $ */
2 /* $NetBSD: isadmavar.h,v 1.10 1997/08/04 22:13:33 augustss Exp $ */
3
4 /*-
5 * Copyright (c) 1997 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 #ifndef _DEV_ISA_ISADMAVAR_H
42 #define _DEV_ISA_ISADMAVAR_H
43
44 /* XXX for now... */
45 #ifndef __ISADMA_COMPAT
46 #define __ISADMA_COMPAT
47 #endif /* __ISADMA_COMPAT */
48
49 #ifdef __ISADMA_COMPAT
50
51 /* XXX ugly.. but it's a deprecated API that uses it so it will go.. */
52 extern struct device *isa_dev;
53
54 #define isadma_acquire(c) isa_dma_acquire(isa_dev, (c))
55 #define isadma_release(c) isa_dma_release(isa_dev, (c))
56 #define isadma_cascade(c) isa_dmacascade(isa_dev, (c))
57 #define isadma_start(a, s, c, f) \
58 isa_dmastart(isa_dev, (c), (a), (s), 0, (f), BUS_DMA_WAITOK|BUS_DMA_BUS1)
59 #define isadma_abort(c) isa_dmaabort(isa_dev, (c))
60 #define isadma_finished(c) isa_dmafinished(isa_dev, (c))
61 #define isadma_done(c) isa_dmadone(isa_dev, (c))
62
63 #endif /* __ISADMA_COMPAT */
64
65 #define MAX_ISADMA 65536
66
67 #define DMAMODE_WRITE 0
68 #define DMAMODE_READ 1
69 #define DMAMODE_LOOP 2
70
71 struct proc;
72
73 void isa_dmacascade(struct device *, int);
74
75 int isa_dmamap_create(struct device *, int, bus_size_t, int);
76 void isa_dmamap_destroy(struct device *, int);
77
78 int isa_dmastart(struct device *, int, void *, bus_size_t,
79 struct proc *, int, int);
80 void isa_dmaabort(struct device *, int);
81 bus_size_t isa_dmacount(struct device *, int);
82 int isa_dmafinished(struct device *, int);
83 void isa_dmadone(struct device *, int);
84
85 int isa_dmamem_alloc(struct device *, int, bus_size_t,
86 bus_addr_t *, int);
87 void isa_dmamem_free(struct device *, int, bus_addr_t, bus_size_t);
88 int isa_dmamem_map(struct device *, int, bus_addr_t, bus_size_t,
89 caddr_t *, int);
90 void isa_dmamem_unmap(struct device *, int, caddr_t, size_t);
91 int isa_dmamem_mmap(struct device *, int, bus_addr_t, bus_size_t,
92 int, int, int);
93
94 int isa_drq_isfree(struct device *, int);
95
96 void *isa_malloc(struct device *, int, size_t, int, int);
97 void isa_free(void *, int);
98 paddr_t isa_mappage(void *, off_t, int);
99
100 #endif /* _DEV_ISA_ISADMAVAR_H */