2 * Copyright (c) 2017 Jason A. Harmening.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #ifndef _BUS_DMA_INTERNAL_H_
30 #define _BUS_DMA_INTERNAL_H_
33 * The following functions define the interface between the MD and MI
34 * busdma layers. These are not intended for consumption by driver
38 bus_dma_segment_t *_bus_dmamap_complete(bus_dma_tag_t dmat,
39 bus_dmamap_t map, bus_dma_segment_t *segs,
40 int nsegs, int error);
42 int _bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map,
43 void *buf, bus_size_t buflen, struct pmap *pmap,
44 int flags, bus_dma_segment_t *segs, int *segp);
46 int _bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map,
47 struct vm_page **ma, bus_size_t tlen, int ma_offs,
48 int flags, bus_dma_segment_t *segs, int *segp);
50 int _bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map,
51 vm_paddr_t paddr, bus_size_t buflen,
52 int flags, bus_dma_segment_t *segs, int *segp);
54 void _bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map,
55 struct memdesc *mem, bus_dmamap_callback_t *callback,
58 #endif /* !_BUS_DMA_INTERNAL_H_ */