_bus.h revision 145255 
1/*-
2 * Copyright (c) 2005 M. Warner Losh.
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 *    without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in
13 *    the documentation and/or other materials provided with the
14 *    distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: head/sys/pc98/include/_bus.h 145255 2005-04-19 03:19:19Z imp $
29 */
30
31#ifndef PC98_INCLUDE__BUS_H
32#define PC98_INCLUDE__BUS_H
33
34/*
35 * Bus address and size types
36 */
37typedef u_int bus_addr_t;
38typedef u_int bus_size_t;
39
40#define BUS_SPACE_IAT_MAXSIZE	33
41
42/*
43 * bus space tag
44 */
45#define	_PASCAL_CALL	(void)
46
47#define	_BUS_SPACE_CALL_FUNCS_TAB(NAME,TYPE,BWN) \
48	NAME##_space_read_##BWN, 				\
49	NAME##_space_read_multi_##BWN, 				\
50	NAME##_space_read_region_##BWN,				\
51	NAME##_space_write_##BWN, 				\
52	NAME##_space_write_multi_##BWN, 			\
53	NAME##_space_write_region_##BWN,			\
54	NAME##_space_set_multi_##BWN,				\
55	NAME##_space_set_region_##BWN,				\
56	NAME##_space_copy_region_##BWN
57
58#define	_BUS_SPACE_CALL_FUNCS_PROTO(NAME,TYPE,BWN) \
59	TYPE NAME##_space_read_##BWN _PASCAL_CALL;		\
60	void NAME##_space_read_multi_##BWN _PASCAL_CALL;	\
61	void NAME##_space_read_region_##BWN _PASCAL_CALL;	\
62	void NAME##_space_write_##BWN _PASCAL_CALL;		\
63	void NAME##_space_write_multi_##BWN _PASCAL_CALL;	\
64	void NAME##_space_write_region_##BWN _PASCAL_CALL;	\
65	void NAME##_space_set_multi_##BWN _PASCAL_CALL;		\
66	void NAME##_space_set_region_##BWN _PASCAL_CALL;	\
67	void NAME##_space_copy_region_##BWN _PASCAL_CALL;
68
69#define	_BUS_SPACE_CALL_FUNCS(NAME,TYPE,BWN) \
70	TYPE (* NAME##_read_##BWN) _PASCAL_CALL;		\
71	void (* NAME##_read_multi_##BWN) _PASCAL_CALL;		\
72	void (* NAME##_read_region_##BWN) _PASCAL_CALL;		\
73	void (* NAME##_write_##BWN) _PASCAL_CALL;		\
74	void (* NAME##_write_multi_##BWN) _PASCAL_CALL;		\
75	void (* NAME##_write_region_##BWN) _PASCAL_CALL;	\
76	void (* NAME##_set_multi_##BWN) _PASCAL_CALL;		\
77	void (* NAME##_set_region_##BWN) _PASCAL_CALL;		\
78	void (* NAME##_copy_region_##BWN) _PASCAL_CALL;
79
80struct bus_space_access_methods {
81	/* 8 bits access methods */
82	_BUS_SPACE_CALL_FUNCS(bs,u_int8_t,1)
83
84	/* 16 bits access methods */
85	_BUS_SPACE_CALL_FUNCS(bs,u_int16_t,2)
86
87	/* 32 bits access methods */
88	_BUS_SPACE_CALL_FUNCS(bs,u_int32_t,4)
89};
90
91/*
92 * Access methods for bus resources and address space.
93 */
94struct bus_space_tag {
95#define	BUS_SPACE_IO	0
96#define	BUS_SPACE_MEM	1
97	u_int	bs_tag;			/* bus space flags */
98
99	struct bus_space_access_methods bs_da;	/* direct access */
100	struct bus_space_access_methods bs_ra;	/* relocate access */
101#if	0
102	struct bus_space_access_methods bs_ida;	/* indexed direct access */
103#endif
104};
105typedef struct bus_space_tag *bus_space_tag_t;
106
107/*
108 * bus space handle
109 */
110struct bus_space_handle {
111	bus_addr_t	bsh_base;
112	size_t		bsh_sz;
113
114	bus_addr_t	bsh_iat[BUS_SPACE_IAT_MAXSIZE];
115	size_t		bsh_maxiatsz;
116	size_t		bsh_iatsz;
117
118	struct resource	**bsh_res;
119	size_t		bsh_ressz;
120
121	struct bus_space_access_methods bsh_bam;
122};
123typedef struct bus_space_handle *bus_space_handle_t;
124
125#endif /* PC98_INCLUDE__BUS_H */
126