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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/*
* arch/sh/kernel/io_generic.c
*
* Copyright (C) 2000 Niibe Yutaka
* Copyright (C) 2005 - 2007 Paul Mundt
*
* Generic I/O routine. These can be used where a machine specific version
* is not required.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/module.h>
#include <linux/io.h>
#include <asm/machvec.h>
#ifdef CONFIG_CPU_SH3
/* SH3 has a PCMCIA bug that needs a dummy read from area 6 for a
* workaround. */
/* I'm not sure SH7709 has this kind of bug */
#define dummy_read() __raw_readb(0xba000000)
#else
#define dummy_read()
#endif
unsigned long generic_io_base;
u8 generic_inb(unsigned long port)
{
return __raw_readb(__ioport_map(port, 1));
}
u16 generic_inw(unsigned long port)
{
return __raw_readw(__ioport_map(port, 2));
}
u32 generic_inl(unsigned long port)
{
return __raw_readl(__ioport_map(port, 4));
}
u8 generic_inb_p(unsigned long port)
{
unsigned long v = generic_inb(port);
ctrl_delay();
return v;
}
u16 generic_inw_p(unsigned long port)
{
unsigned long v = generic_inw(port);
ctrl_delay();
return v;
}
u32 generic_inl_p(unsigned long port)
{
unsigned long v = generic_inl(port);
ctrl_delay();
return v;
}
/*
* insb/w/l all read a series of bytes/words/longs from a fixed port
* address. However as the port address doesn't change we only need to
* convert the port address to real address once.
*/
void generic_insb(unsigned long port, void *dst, unsigned long count)
{
__raw_readsb(__ioport_map(port, 1), dst, count);
dummy_read();
}
void generic_insw(unsigned long port, void *dst, unsigned long count)
{
__raw_readsw(__ioport_map(port, 2), dst, count);
dummy_read();
}
void generic_insl(unsigned long port, void *dst, unsigned long count)
{
__raw_readsl(__ioport_map(port, 4), dst, count);
dummy_read();
}
void generic_outb(u8 b, unsigned long port)
{
__raw_writeb(b, __ioport_map(port, 1));
}
void generic_outw(u16 b, unsigned long port)
{
__raw_writew(b, __ioport_map(port, 2));
}
void generic_outl(u32 b, unsigned long port)
{
__raw_writel(b, __ioport_map(port, 4));
}
void generic_outb_p(u8 b, unsigned long port)
{
generic_outb(b, port);
ctrl_delay();
}
void generic_outw_p(u16 b, unsigned long port)
{
generic_outw(b, port);
ctrl_delay();
}
void generic_outl_p(u32 b, unsigned long port)
{
generic_outl(b, port);
ctrl_delay();
}
/*
* outsb/w/l all write a series of bytes/words/longs to a fixed port
* address. However as the port address doesn't change we only need to
* convert the port address to real address once.
*/
void generic_outsb(unsigned long port, const void *src, unsigned long count)
{
__raw_writesb(__ioport_map(port, 1), src, count);
dummy_read();
}
void generic_outsw(unsigned long port, const void *src, unsigned long count)
{
__raw_writesw(__ioport_map(port, 2), src, count);
dummy_read();
}
void generic_outsl(unsigned long port, const void *src, unsigned long count)
{
__raw_writesl(__ioport_map(port, 4), src, count);
dummy_read();
}
void __iomem *generic_ioport_map(unsigned long addr, unsigned int size)
{
return (void __iomem *)(addr + generic_io_base);
}
void generic_ioport_unmap(void __iomem *addr)
{
}
|
