aboutsummaryrefslogtreecommitdiff
path: root/arch/sh/boards/se/73180/io.c
blob: 73648cbe3678a147ed2cb66cb5ecf53ca2a719ab (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
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
/*
 * arch/sh/boards/se/73180/io.c
 *
 * Copyright (C) 2003 YOSHII Takashi <yoshii-takashi@hitachi-ul.co.jp>
 * Based on arch/sh/boards/se/7300/io.c
 *
 * I/O routine for SH-Mobile3 73180 SolutionEngine.
 *
 */

#include <linux/config.h>
#include <linux/kernel.h>
#include <asm/mach/se73180.h>
#include <asm/io.h>

#define badio(fn, a) panic("bad i/o operation %s for %08lx.", #fn, a)

struct iop {
	unsigned long start, end;
	unsigned long base;
	struct iop *(*check) (struct iop * p, unsigned long port);
	unsigned char (*inb) (struct iop * p, unsigned long port);
	unsigned short (*inw) (struct iop * p, unsigned long port);
	void (*outb) (struct iop * p, unsigned char value, unsigned long port);
	void (*outw) (struct iop * p, unsigned short value, unsigned long port);
};

struct iop *
simple_check(struct iop *p, unsigned long port)
{
	if ((p->start <= port) && (port <= p->end))
		return p;
	else
		badio(check, port);
}

struct iop *
ide_check(struct iop *p, unsigned long port)
{
	if (((0x1f0 <= port) && (port <= 0x1f7)) || (port == 0x3f7))
		return p;
	return NULL;
}

unsigned char
simple_inb(struct iop *p, unsigned long port)
{
	return *(unsigned char *) (p->base + port);
}

unsigned short
simple_inw(struct iop *p, unsigned long port)
{
	return *(unsigned short *) (p->base + port);
}

void
simple_outb(struct iop *p, unsigned char value, unsigned long port)
{
	*(unsigned char *) (p->base + port) = value;
}

void
simple_outw(struct iop *p, unsigned short value, unsigned long port)
{
	*(unsigned short *) (p->base + port) = value;
}

unsigned char
pcc_inb(struct iop *p, unsigned long port)
{
	unsigned long addr = p->base + port + 0x40000;
	unsigned long v;

	if (port & 1)
		addr += 0x00400000;
	v = *(volatile unsigned char *) addr;
	return v;
}

void
pcc_outb(struct iop *p, unsigned char value, unsigned long port)
{
	unsigned long addr = p->base + port + 0x40000;

	if (port & 1)
		addr += 0x00400000;
	*(volatile unsigned char *) addr = value;
}

unsigned char
bad_inb(struct iop *p, unsigned long port)
{
	badio(inb, port);
}

void
bad_outb(struct iop *p, unsigned char value, unsigned long port)
{
	badio(inw, port);
}

/* MSTLANEX01 LAN at 0xb400:0000 */
static struct iop laniop = {
	.start = 0x300,
	.end = 0x30f,
	.base = 0xb4000000,
	.check = simple_check,
	.inb = simple_inb,
	.inw = simple_inw,
	.outb = simple_outb,
	.outw = simple_outw,
};

/* NE2000 pc card NIC */
static struct iop neiop = {
	.start = 0x280,
	.end = 0x29f,
	.base = 0xb0600000 + 0x80,	/* soft 0x280 -> hard 0x300 */
	.check = simple_check,
	.inb = pcc_inb,
	.inw = simple_inw,
	.outb = pcc_outb,
	.outw = simple_outw,
};

/* CF in CF slot */
static struct iop cfiop = {
	.base = 0xb0600000,
	.check = ide_check,
	.inb = pcc_inb,
	.inw = simple_inw,
	.outb = pcc_outb,
	.outw = simple_outw,
};

static __inline__ struct iop *
port2iop(unsigned long port)
{
	if (0) ;
#if defined(CONFIG_SMC91111)
	else if (laniop.check(&laniop, port))
		return &laniop;
#endif
#if defined(CONFIG_NE2000)
	else if (neiop.check(&neiop, port))
		return &neiop;
#endif
#if defined(CONFIG_IDE)
	else if (cfiop.check(&cfiop, port))
		return &cfiop;
#endif
	else
		return &neiop;	/* fallback */
}

static inline void
delay(void)
{
	ctrl_inw(0xac000000);
	ctrl_inw(0xac000000);
}

unsigned char
sh73180se_inb(unsigned long port)
{
	struct iop *p = port2iop(port);
	return (p->inb) (p, port);
}

unsigned char
sh73180se_inb_p(unsigned long port)
{
	unsigned char v = sh73180se_inb(port);
	delay();
	return v;
}

unsigned short
sh73180se_inw(unsigned long port)
{
	struct iop *p = port2iop(port);
	return (p->inw) (p, port);
}

unsigned int
sh73180se_inl(unsigned long port)
{
	badio(inl, port);
}

void
sh73180se_outb(unsigned char value, unsigned long port)
{
	struct iop *p = port2iop(port);
	(p->outb) (p, value, port);
}

void
sh73180se_outb_p(unsigned char value, unsigned long port)
{
	sh73180se_outb(value, port);
	delay();
}

void
sh73180se_outw(unsigned short value, unsigned long port)
{
	struct iop *p = port2iop(port);
	(p->outw) (p, value, port);
}

void
sh73180se_outl(unsigned int value, unsigned long port)
{
	badio(outl, port);
}

void
sh73180se_insb(unsigned long port, void *addr, unsigned long count)
{
	unsigned char *a = addr;
	struct iop *p = port2iop(port);
	while (count--)
		*a++ = (p->inb) (p, port);
}

void
sh73180se_insw(unsigned long port, void *addr, unsigned long count)
{
	unsigned short *a = addr;
	struct iop *p = port2iop(port);
	while (count--)
		*a++ = (p->inw) (p, port);
}

void
sh73180se_insl(unsigned long port, void *addr, unsigned long count)
{
	badio(insl, port);
}

void
sh73180se_outsb(unsigned long port, const void *addr, unsigned long count)
{
	unsigned char *a = (unsigned char *) addr;
	struct iop *p = port2iop(port);
	while (count--)
		(p->outb) (p, *a++, port);
}

void
sh73180se_outsw(unsigned long port, const void *addr, unsigned long count)
{
	unsigned short *a = (unsigned short *) addr;
	struct iop *p = port2iop(port);
	while (count--)
		(p->outw) (p, *a++, port);
}

void
sh73180se_outsl(unsigned long port, const void *addr, unsigned long count)
{
	badio(outsw, port);
}