octeon_bus_space.c revision 1.1 
1/*	$OpenBSD: octeon_bus_space.c,v 1.1 2010/10/28 22:52:10 syuu Exp $ */
2
3/*
4 * Copyright (c) 2001-2003 Opsycon AB  (www.opsycon.se / www.opsycon.com)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29/*
30 * Simple generic bus access primitives.
31 */
32
33#include <sys/param.h>
34#include <sys/systm.h>
35
36#include <machine/bus.h>
37
38uint8_t
39generic_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
40{
41	return *(volatile uint8_t *)(h + o);
42}
43
44uint16_t
45generic_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
46{
47	return *(volatile uint16_t *)(h + o);
48}
49
50uint32_t
51generic_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
52{
53	return *(volatile uint32_t *)(h + o);
54}
55
56uint64_t
57generic_space_read_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
58{
59	return *(volatile uint64_t *)(h + o);
60}
61
62void
63generic_space_write_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
64    uint8_t v)
65{
66	*(volatile uint8_t *)(h + o) = v;
67}
68
69void
70generic_space_write_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
71    uint16_t v)
72{
73	*(volatile uint16_t *)(h + o) = v;
74}
75
76void
77generic_space_write_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
78    uint32_t v)
79{
80	*(volatile uint32_t *)(h + o) = v;
81}
82
83void
84generic_space_write_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
85    uint64_t v)
86{
87	*(volatile uint64_t *)(h + o) = v;
88}
89
90void
91generic_space_read_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
92    uint8_t *buf, bus_size_t len)
93{
94	volatile uint16_t *addr = (volatile uint16_t *)(h + o);
95	len >>= 1;
96	while (len-- != 0) {
97		*(uint16_t *)buf = *addr;
98		buf += 2;
99	}
100}
101
102void
103generic_space_write_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
104    const uint8_t *buf, bus_size_t len)
105{
106	volatile uint16_t *addr = (volatile uint16_t *)(h + o);
107	len >>= 1;
108	while (len-- != 0) {
109		*addr = *(uint16_t *)buf;
110		buf += 2;
111	}
112}
113
114void
115generic_space_read_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
116    uint8_t *buf, bus_size_t len)
117{
118	volatile uint32_t *addr = (volatile uint32_t *)(h + o);
119	len >>= 2;
120	while (len-- != 0) {
121		*(uint32_t *)buf = *addr;
122		buf += 4;
123	}
124}
125
126void
127generic_space_write_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
128    const uint8_t *buf, bus_size_t len)
129{
130	volatile uint32_t *addr = (volatile uint32_t *)(h + o);
131	len >>= 2;
132	while (len-- != 0) {
133		*addr = *(uint32_t *)buf;
134		buf += 4;
135	}
136}
137
138void
139generic_space_read_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
140    uint8_t *buf, bus_size_t len)
141{
142	volatile uint64_t *addr = (volatile uint64_t *)(h + o);
143	len >>= 3;
144	while (len-- != 0) {
145		*(uint64_t *)buf = *addr;
146		buf += 8;
147	}
148}
149
150void
151generic_space_write_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
152    const uint8_t *buf, bus_size_t len)
153{
154	volatile uint64_t *addr = (volatile uint64_t *)(h + o);
155	len >>= 3;
156	while (len-- != 0) {
157		*addr = *(uint64_t *)buf;
158		buf += 8;
159	}
160}
161
162int
163generic_space_map(bus_space_tag_t t, bus_addr_t offs, bus_size_t size,
164    int flags, bus_space_handle_t *bshp)
165{
166	*bshp = t->bus_base + offs;
167	return 0;
168}
169
170void
171generic_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
172{
173}
174
175int
176generic_space_region(bus_space_tag_t t, bus_space_handle_t bsh,
177    bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)
178{
179	*nbshp = bsh + offset;
180	return 0;
181}
182
183void *
184generic_space_vaddr(bus_space_tag_t t, bus_space_handle_t h)
185{
186	return (void *)h;
187}
188