1/*-
2 * Copyright (c) 2014, 2015 Marcel Moolenaar
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 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef _LIBBUS_SPACE_H_
30#define	_LIBBUS_SPACE_H_
31
32int	bus_map(const char *dev, const char *resource);
33int16_t	bus_read_1(int rid, long ofs);
34int32_t	bus_read_2(int rid, long ofs);
35int64_t bus_read_4(int rid, long ofs);
36int	bus_subregion(int rid, long ofs, long sz);
37int	bus_unmap(int rid);
38int	bus_write_1(int rid, long ofs, uint8_t val);
39int	bus_write_2(int rid, long ofs, uint16_t val);
40int	bus_write_4(int rid, long ofs, uint32_t val);
41
42typedef unsigned long bus_addr_t;
43typedef unsigned long bus_size_t;
44typedef int busdma_tag_t;
45typedef int busdma_md_t;
46typedef int busdma_seg_t;
47
48int	busdma_tag_create(const char *dev, bus_addr_t align, bus_addr_t bndry,
49	    bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs,
50	    bus_size_t maxsegsz, u_int datarate, u_int flags,
51	    busdma_tag_t *out_p);
52int	busdma_tag_derive(busdma_tag_t tag, bus_addr_t align, bus_addr_t bndry,
53	    bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs,
54	    bus_size_t maxsegsz, u_int datarate, u_int flags,
55	    busdma_tag_t *out_p);
56int	busdma_tag_destroy(busdma_tag_t tag);
57
58int	busdma_mem_alloc(busdma_tag_t tag, u_int flags, busdma_md_t *out_p);
59int	busdma_mem_free(busdma_md_t md);
60
61int	busdma_md_create(busdma_tag_t tag, u_int flags, busdma_md_t *out_p);
62int	busdma_md_destroy(busdma_md_t md);
63int	busdma_md_load(busdma_md_t md, void *buf, size_t len, u_int flags);
64int	busdma_md_unload(busdma_md_t md);
65
66#define	BUSDMA_MD_BUS_SPACE	0
67#define	BUSDMA_MD_PHYS_SPACE	1
68#define	BUSDMA_MD_VIRT_SPACE	2
69
70int	busdma_md_first_seg(busdma_md_t, int space);
71int	busdma_md_next_seg(busdma_md_t, busdma_seg_t seg);
72
73bus_addr_t	busdma_seg_get_addr(busdma_seg_t seg);
74bus_size_t	busdma_seg_get_size(busdma_seg_t seg);
75
76#define	BUSDMA_SYNC_PREREAD     1
77#define	BUSDMA_SYNC_POSTREAD    2
78#define	BUSDMA_SYNC_PREWRITE    4
79#define	BUSDMA_SYNC_POSTWRITE   8
80
81int	busdma_sync(busdma_md_t md, int op);
82int	busdma_sync_range(busdma_md_t md, int op, bus_size_t, bus_size_t);
83
84#endif /* _LIBBUS_SPACE_H_ */
85