1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
* Copyright (C) 2008 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _ARCH_IO_H
#define _ARCH_IO_H
#include <stdint.h>
#include <arch/cache.h>
/*
* readb/w/l writeb/w/l are deprecated. use read8/16/32 and write8/16/32
* instead for future development.
*
* TODO: make the existing code use read8/16/32 and write8/16/32 then remove
* readb/w/l and writeb/w/l.
*/
static inline uint8_t readb(volatile const void *_a)
{
dmb();
return *(volatile const uint8_t *)_a;
}
static inline uint16_t readw(volatile const void *_a)
{
dmb();
return *(volatile const uint16_t *)_a;
}
static inline uint32_t readl(volatile const void *_a)
{
dmb();
return *(volatile const uint32_t *)_a;
}
static inline void writeb(uint8_t _v, volatile void *_a)
{
dmb();
*(volatile uint8_t *)_a = _v;
dmb();
}
static inline void writew(uint16_t _v, volatile void *_a)
{
dmb();
*(volatile uint16_t *)_a = _v;
dmb();
}
static inline void writel(uint32_t _v, volatile void *_a)
{
dmb();
*(volatile uint32_t *)_a = _v;
dmb();
}
static inline uint8_t read8(const void *addr)
{
dmb();
return *(volatile uint8_t *)addr;
}
static inline uint16_t read16(const void *addr)
{
dmb();
return *(volatile uint16_t *)addr;
}
static inline uint32_t read32(const void *addr)
{
dmb();
return *(volatile uint32_t *)addr;
}
static inline void write8(void *addr, uint8_t val)
{
dmb();
*(volatile uint8_t *)addr = val;
dmb();
}
static inline void write16(void *addr, uint16_t val)
{
dmb();
*(volatile uint16_t *)addr = val;
dmb();
}
static inline void write32(void *addr, uint32_t val)
{
dmb();
*(volatile uint32_t *)addr = val;
dmb();
}
#endif
|
