1 /* $OpenBSD: isadmavar.h,v 1.16 2008/06/26 05:42:16 ray 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 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #ifndef _DEV_ISA_ISADMAVAR_H
35 #define _DEV_ISA_ISADMAVAR_H
36
37 /* XXX for now... */
38 #ifndef __ISADMA_COMPAT
39 #define __ISADMA_COMPAT
40 #endif /* __ISADMA_COMPAT */
41
42 #ifdef __ISADMA_COMPAT
43
44 /* XXX ugly.. but it's a deprecated API that uses it so it will go.. */
45 extern struct device *isa_dev;
46
47 #define isadma_acquire(c) isa_dma_acquire(isa_dev, (c))
48 #define isadma_release(c) isa_dma_release(isa_dev, (c))
49 #define isadma_cascade(c) isa_dmacascade(isa_dev, (c))
50 #define isadma_start(a, s, c, f) \
51 isa_dmastart(isa_dev, (c), (a), (s), 0, (f), BUS_DMA_WAITOK|BUS_DMA_BUS1)
52 #define isadma_abort(c) isa_dmaabort(isa_dev, (c))
53 #define isadma_finished(c) isa_dmafinished(isa_dev, (c))
54 #define isadma_done(c) isa_dmadone(isa_dev, (c))
55
56 #endif /* __ISADMA_COMPAT */
57
58 #define MAX_ISADMA 65536
59
60 #define DMAMODE_WRITE 0
61 #define DMAMODE_READ 1
62 #define DMAMODE_LOOP 2
63
64 struct proc;
65
66 void isa_dmacascade(struct device *, int);
67
68 int isa_dmamap_create(struct device *, int, bus_size_t, int);
69 void isa_dmamap_destroy(struct device *, int);
70
71 int isa_dmastart(struct device *, int, void *, bus_size_t,
72 struct proc *, int, int);
73 void isa_dmaabort(struct device *, int);
74 bus_size_t isa_dmacount(struct device *, int);
75 int isa_dmafinished(struct device *, int);
76 void isa_dmadone(struct device *, int);
77
78 int isa_dmamem_alloc(struct device *, int, bus_size_t,
79 bus_addr_t *, int);
80 void isa_dmamem_free(struct device *, int, bus_addr_t, bus_size_t);
81 int isa_dmamem_map(struct device *, int, bus_addr_t, bus_size_t,
82 caddr_t *, int);
83 void isa_dmamem_unmap(struct device *, int, caddr_t, size_t);
84 int isa_dmamem_mmap(struct device *, int, bus_addr_t, bus_size_t,
85 int, int, int);
86
87 int isa_drq_isfree(struct device *, int);
88
89 void *isa_malloc(struct device *, int, size_t, int, int);
90 void isa_free(void *, int);
91 paddr_t isa_mappage(void *, off_t, int);
92
93 #endif /* _DEV_ISA_ISADMAVAR_H */
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