aboutsummaryrefslogtreecommitdiff
path: root/arch/m32r/kernel/io_oaks32r.c
blob: 910dd131c22751b202d9ad5b0981808567c00266 (plain)
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
/*
 *  linux/arch/m32r/kernel/io_oaks32r.c
 *
 *  Typical I/O routines for OAKS32R board.
 *
 *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
 *                           Hitoshi Yamamoto, Mamoru Sakugawa
 */

#include <linux/config.h>
#include <asm/m32r.h>
#include <asm/page.h>
#include <asm/io.h>

#define PORT2ADDR(port)  _port2addr(port)

static inline void *_port2addr(unsigned long port)
{
	return (void *)(port | NONCACHE_OFFSET);
}

static inline  void *_port2addr_ne(unsigned long port)
{
	return (void *)((port<<1) + NONCACHE_OFFSET + 0x02000000);
}

static inline void delay(void)
{
	__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
}

/*
 * NIC I/O function
 */

#define PORT2ADDR_NE(port)  _port2addr_ne(port)

static inline unsigned char _ne_inb(void *portp)
{
	return *(volatile unsigned char *)(portp+1);
}

static inline unsigned short _ne_inw(void *portp)
{
	unsigned short tmp;

	tmp = *(unsigned short *)(portp) & 0xff;
	tmp |= *(unsigned short *)(portp+2) << 8;
	return tmp;
}

static inline  void _ne_insb(void *portp, void *addr, unsigned long count)
{
	unsigned char *buf = addr;
	while (count--)
		*buf++ = *(volatile unsigned char *)(portp+1);
}

static inline void _ne_outb(unsigned char b, void *portp)
{
	*(volatile unsigned char *)(portp+1) = b;
}

static inline void _ne_outw(unsigned short w, void *portp)
{
	*(volatile unsigned short *)portp =  (w >> 8);
	*(volatile unsigned short *)(portp+2) =  (w & 0xff);
}

unsigned char _inb(unsigned long port)
{
	if (port >= 0x300 && port < 0x320)
		return _ne_inb(PORT2ADDR_NE(port));

	return *(volatile unsigned char *)PORT2ADDR(port);
}

unsigned short _inw(unsigned long port)
{
	if (port >= 0x300 && port < 0x320)
		return _ne_inw(PORT2ADDR_NE(port));

	return *(volatile unsigned short *)PORT2ADDR(port);
}

unsigned long _inl(unsigned long port)
{
	return *(volatile unsigned long *)PORT2ADDR(port);
}

unsigned char _inb_p(unsigned long port)
{
	unsigned char v = _inb(port);
	delay();
	return (v);
}

unsigned short _inw_p(unsigned long port)
{
	unsigned short v = _inw(port);
	delay();
	return (v);
}

unsigned long _inl_p(unsigned long port)
{
	unsigned long v = _inl(port);
	delay();
	return (v);
}

void _outb(unsigned char b, unsigned long port)
{
	if (port >= 0x300 && port < 0x320)
		_ne_outb(b, PORT2ADDR_NE(port));
	else
		*(volatile unsigned char *)PORT2ADDR(port) = b;
}

void _outw(unsigned short w, unsigned long port)
{
	if (port >= 0x300 && port < 0x320)
		_ne_outw(w, PORT2ADDR_NE(port));
	else
		*(volatile unsigned short *)PORT2ADDR(port) = w;
}

void _outl(unsigned long l, unsigned long port)
{
	*(volatile unsigned long *)PORT2ADDR(port) = l;
}

void _outb_p(unsigned char b, unsigned long port)
{
	_outb(b, port);
	delay();
}

void _outw_p(unsigned short w, unsigned long port)
{
	_outw(w, port);
	delay();
}

void _outl_p(unsigned long l, unsigned long port)
{
	_outl(l, port);
	delay();
}

void _insb(unsigned int port, void *addr, unsigned long count)
{
	if (port >= 0x300 && port < 0x320)
		_ne_insb(PORT2ADDR_NE(port), addr, count);
	else {
		unsigned char *buf = addr;
		unsigned char *portp = PORT2ADDR(port);
		while (count--)
			*buf++ = *(volatile unsigned char *)portp;
	}
}

void _insw(unsigned int port, void *addr, unsigned long count)
{
	unsigned short *buf = addr;
	unsigned short *portp;

	if (port >= 0x300 && port < 0x320) {
		portp = PORT2ADDR_NE(port);
		while (count--)
			*buf++ = _ne_inw(portp);
	} else {
		portp = PORT2ADDR(port);
		while (count--)
			*buf++ = *(volatile unsigned short *)portp;
	}
}

void _insl(unsigned int port, void *addr, unsigned long count)
{
	unsigned long *buf = addr;
	unsigned long *portp;

	portp = PORT2ADDR(port);
	while (count--)
		*buf++ = *(volatile unsigned long *)portp;
}

void _outsb(unsigned int port, const void *addr, unsigned long count)
{
	const unsigned char *buf = addr;
	unsigned char *portp;

	if (port >= 0x300 && port < 0x320) {
		portp = PORT2ADDR_NE(port);
		while (count--)
			_ne_outb(*buf++, portp);
	} else {
		portp = PORT2ADDR(port);
		while (count--)
			*(volatile unsigned char *)portp = *buf++;
	}
}

void _outsw(unsigned int port, const void *addr, unsigned long count)
{
	const unsigned short *buf = addr;
	unsigned short *portp;

	if (port >= 0x300 && port < 0x320) {
		portp = PORT2ADDR_NE(port);
		while (count--)
			_ne_outw(*buf++, portp);
	} else {
		portp = PORT2ADDR(port);
		while (count--)
			*(volatile unsigned short *)portp = *buf++;
	}
}

void _outsl(unsigned int port, const void *addr, unsigned long count)
{
	const unsigned long *buf = addr;
	unsigned char *portp;

	portp = PORT2ADDR(port);
	while (count--)
		*(volatile unsigned long *)portp = *buf++;
}