1 /*-
2 * Copyright (c) 2005 Scott Long
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #ifndef _AMD64_BUS_DMA_H_
30 #define _AMD64_BUS_DMA_H_
31
32 #include <sys/param.h>
33 #include <sys/bus_dma.h>
34 #include <x86/busdma_impl.h>
35
36 struct bus_dma_tag {
37 struct bus_dma_tag_common common;
38 int map_count;
39 int bounce_flags;
40 bus_dma_segment_t *segments;
41 struct bounce_zone *bounce_zone;
42 };
43
44 static __inline bus_dma_segment_t *
_bus_dmamap_complete(bus_dma_tag_t dmat,bus_dmamap_t map,bus_dma_segment_t * segs,int nsegs,int error)45 _bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,
46 bus_dma_segment_t *segs, int nsegs, int error)
47 {
48 struct bus_dma_tag_common *tc;
49
50 tc = (struct bus_dma_tag_common *)dmat;
51 if (tc->impl->map_complete != NULL)
52 segs = tc->impl->map_complete(dmat, map, segs, nsegs, error);
53 else if (__predict_false(segs == NULL))
54 segs = dmat->segments;
55 return (segs);
56 }
57
58 #endif /* _AMD64_BUS_DMA_H_ */
59