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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/* $Id: io_generic.c,v 1.2 2003/05/04 19:29:53 lethal Exp $
*
* linux/arch/sh/kernel/io_generic.c
*
* Copyright (C) 2000 Niibe Yutaka
*
* 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 <asm/io.h>
#include <asm/machvec.h>
#include <linux/module.h>
#if defined(CONFIG_CPU_SH3)
/* I'm not sure SH7709 has this kind of bug */
#define SH3_PCMCIA_BUG_WORKAROUND 1
#define DUMMY_READ_AREA6 0xba000000
#endif
#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))
unsigned long generic_io_base;
static inline void delay(void)
{
ctrl_inw(0xa0000000);
}
unsigned char generic_inb(unsigned long port)
{
return *(volatile unsigned char*)PORT2ADDR(port);
}
unsigned short generic_inw(unsigned long port)
{
return *(volatile unsigned short*)PORT2ADDR(port);
}
unsigned int generic_inl(unsigned long port)
{
return *(volatile unsigned long*)PORT2ADDR(port);
}
unsigned char generic_inb_p(unsigned long port)
{
unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
delay();
return v;
}
unsigned short generic_inw_p(unsigned long port)
{
unsigned long v = *(volatile unsigned short*)PORT2ADDR(port);
delay();
return v;
}
unsigned int generic_inl_p(unsigned long port)
{
unsigned long v = *(volatile unsigned long*)PORT2ADDR(port);
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 *buffer, unsigned long count)
{
volatile unsigned char *port_addr;
unsigned char *buf=buffer;
port_addr = (volatile unsigned char *)PORT2ADDR(port);
while(count--)
*buf++ = *port_addr;
}
void generic_insw(unsigned long port, void *buffer, unsigned long count)
{
volatile unsigned short *port_addr;
unsigned short *buf=buffer;
port_addr = (volatile unsigned short *)PORT2ADDR(port);
while(count--)
*buf++ = *port_addr;
#ifdef SH3_PCMCIA_BUG_WORKAROUND
ctrl_inb (DUMMY_READ_AREA6);
#endif
}
void generic_insl(unsigned long port, void *buffer, unsigned long count)
{
volatile unsigned long *port_addr;
unsigned long *buf=buffer;
port_addr = (volatile unsigned long *)PORT2ADDR(port);
while(count--)
*buf++ = *port_addr;
#ifdef SH3_PCMCIA_BUG_WORKAROUND
ctrl_inb (DUMMY_READ_AREA6);
#endif
}
void generic_outb(unsigned char b, unsigned long port)
{
*(volatile unsigned char*)PORT2ADDR(port) = b;
}
void generic_outw(unsigned short b, unsigned long port)
{
*(volatile unsigned short*)PORT2ADDR(port) = b;
}
void generic_outl(unsigned int b, unsigned long port)
{
*(volatile unsigned long*)PORT2ADDR(port) = b;
}
void generic_outb_p(unsigned char b, unsigned long port)
{
*(volatile unsigned char*)PORT2ADDR(port) = b;
delay();
}
void generic_outw_p(unsigned short b, unsigned long port)
{
*(volatile unsigned short*)PORT2ADDR(port) = b;
delay();
}
void generic_outl_p(unsigned int b, unsigned long port)
{
*(volatile unsigned long*)PORT2ADDR(port) = b;
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 *buffer, unsigned long count)
{
volatile unsigned char *port_addr;
const unsigned char *buf=buffer;
port_addr = (volatile unsigned char *)PORT2ADDR(port);
while(count--)
*port_addr = *buf++;
}
void generic_outsw(unsigned long port, const void *buffer, unsigned long count)
{
volatile unsigned short *port_addr;
const unsigned short *buf=buffer;
port_addr = (volatile unsigned short *)PORT2ADDR(port);
while(count--)
*port_addr = *buf++;
#ifdef SH3_PCMCIA_BUG_WORKAROUND
ctrl_inb (DUMMY_READ_AREA6);
#endif
}
void generic_outsl(unsigned long port, const void *buffer, unsigned long count)
{
volatile unsigned long *port_addr;
const unsigned long *buf=buffer;
port_addr = (volatile unsigned long *)PORT2ADDR(port);
while(count--)
*port_addr = *buf++;
#ifdef SH3_PCMCIA_BUG_WORKAROUND
ctrl_inb (DUMMY_READ_AREA6);
#endif
}
unsigned char generic_readb(unsigned long addr)
{
return *(volatile unsigned char*)addr;
}
unsigned short generic_readw(unsigned long addr)
{
return *(volatile unsigned short*)addr;
}
unsigned int generic_readl(unsigned long addr)
{
return *(volatile unsigned long*)addr;
}
void generic_writeb(unsigned char b, unsigned long addr)
{
*(volatile unsigned char*)addr = b;
}
void generic_writew(unsigned short b, unsigned long addr)
{
*(volatile unsigned short*)addr = b;
}
void generic_writel(unsigned int b, unsigned long addr)
{
*(volatile unsigned long*)addr = b;
}
void * generic_ioremap(unsigned long offset, unsigned long size)
{
return (void *) P2SEGADDR(offset);
}
EXPORT_SYMBOL(generic_ioremap);
void generic_iounmap(void *addr)
{
}
EXPORT_SYMBOL(generic_iounmap);
unsigned long generic_isa_port2addr(unsigned long offset)
{
return offset + generic_io_base;
}
|
