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
|
/*
* Copyright (c) 2009 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - 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 ``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 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.
*/
/** @file
* @ingroup libsparc64
*/
#ifndef LIBC_sparc64_DDI_H_
#define LIBC_sparc64_DDI_H_
#include <sys/types.h>
#include <libarch/types.h>
static inline memory_barrier(void)
{
asm volatile ("membar #LoadLoad | #StoreStore\n" ::: "memory");
}
static inline void pio_write_8(ioport8_t *port, uint8_t v)
{
*port = v;
memory_barrier();
}
static inline void pio_write_16(ioport16_t *port, uint16_t v)
{
*port = v;
memory_barrier();
}
static inline void pio_write_32(ioport32_t *port, uint32_t v)
{
*port = v;
memory_barrier();
}
static inline uint8_t pio_read_8(ioport8_t *port)
{
uint8_t rv;
rv = *port;
memory_barrier();
return rv;
}
static inline uint16_t pio_read_16(ioport16_t *port)
{
uint16_t rv;
rv = *port;
memory_barrier();
return rv;
}
static inline uint32_t pio_read_32(ioport32_t *port)
{
uint32_t rv;
rv = *port;
memory_barrier();
return rv;
}
#endif
|