summaryrefslogtreecommitdiff
path: root/sys/arch/powerpc/include/pio.h
blob: 4d411f3bef60ffa60399e9ff8523e3dc51c631bc (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
/*	$OpenBSD: pio.h,v 1.3 1998/08/25 07:45:28 pefo Exp $ */

/*
 * Copyright (c) 1997 Per Fogelstrom, Opsycon AB and RTMX Inc, USA.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed under OpenBSD by
 *	Per Fogelstrom Opsycon AB for RTMX Inc, North Carolina, USA.
 * 4. 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.
 *
 */

#ifndef _MACHINE_PIO_H_
#define _MACHINE_PIO_H_
/*
 * I/O macros.
 */

static __inline void
__outb(a,v)
	volatile u_int8_t *a;
	int v;
{
	*a = v;
	__asm__ volatile("eieio\n  sync");
}

static __inline void
__outw(a,v)
	volatile u_int16_t *a;
	u_int16_t v;
{
	*a = v;
	__asm__ volatile("eieio\n  sync");
}

static __inline void
__outl(a,v)
	volatile u_int32_t *a;
	int v;
{
	*a = v;
	__asm__ volatile("eieio\n  sync");
}

static __inline void
__outwrb(a,v)
	volatile u_int16_t *a;
	u_int16_t v;
{
	u_int32_t _p_ = (u_int32_t)a;

	__asm__ volatile("sthbrx %0, 0, %1\n" :: "r"(v), "r"(_p_));
	__asm__ volatile("eieio\n  sync");
}

static __inline void
__outlrb(a,v)
	volatile u_int32_t *a;
	u_int32_t v;
{
	u_int32_t _p_ = (u_int32_t)a;

	__asm__ volatile("stwbrx %0, 0, %1\n" :: "r"(v), "r"(_p_));
	__asm__ volatile("eieio\n  sync");
}

static __inline u_int8_t
__inb(a)
	volatile u_int8_t *a;
{
	u_int8_t _v_;

	_v_ = *a;
	__asm__ volatile("eieio\n  sync");
	return _v_;
}

static __inline u_int16_t
__inw(a)
	volatile u_int16_t *a;
{
	u_int16_t _v_;

	_v_ = *a;
	__asm__ volatile("eieio\n  sync");
	return _v_;
}

static __inline u_int32_t
__inl(a)
	volatile u_int32_t *a;
{
	u_int32_t _v_;

	_v_ = *a;
	__asm__ volatile("eieio\n  sync");
	return _v_;
}

static __inline u_int16_t
__inwrb(a)
	volatile u_int16_t *a;
{
	u_int16_t _v_;
	u_int32_t _p_ = (u_int32_t)a;

	__asm__ volatile("lhbrx %0, 0, %1\n" : "=r"(_v_) : "r"(_p_));
	__asm__ volatile("eieio\n  sync");
	return _v_;
}

static __inline u_int32_t
__inlrb(a)
	volatile u_int32_t *a;
{
	u_int32_t _v_;
	u_int32_t _p_ = (u_int32_t)a;

	__asm__ volatile("lwbrx %0, 0, %1\n" : "=r"(_v_) : "r"(_p_));
	__asm__ volatile("eieio\n  sync");
	return _v_;
}


#define	outb(a,v)	(__outb((volatile u_int8_t *)(a), v))
#define	out8(a,v)	outb(a,v)
#define	outw(a,v)	(__outw((volatile u_int16_t *)(a), v))
#define	out16(a,v)	outw(a,v)
#define	outl(a,v)	(__outl((volatile u_int32_t *)(a), v))
#define	out32(a,v)	outl(a,v)
#define	inb(a)		(__inb((volatile u_int8_t *)(a)))
#define	in8(a)		inb(a)
#define	inw(a)		(__inw((volatile u_int16_t *)(a)))
#define	in16(a)		inw(a)
#define	inl(a)		(__inl((volatile u_int32_t *)(a)))
#define	in32(a)		inl(a)

#define	out8rb(a,v)	outb(a,v)
#define	outwrb(a,v)	(__outwrb((volatile u_int16_t *)(a), v))
#define	out16rb(a,v)	outwrb(a,v)
#define	outlrb(a,v)	(__outlrb((volatile u_int32_t *)(a), v))
#define	out32rb(a,v)	outlrb(a,v)
#define	in8rb(a)	inb(a)
#define	inwrb(a)	(__inwrb((volatile u_int16_t *)(a)))
#define	in16rb(a)	inwrb(a)
#define	inlrb(a)	(__inlrb((volatile u_int32_t *)(a)))
#define	in32rb(a)	inlrb(a)

#ifdef DEBUG_SPEC
static __inline void
__flash_led(bits, count)
	int bits;
{
	int i, v = 0;

	if(bits == 0) {
		v = 1; bits = 3;
	}
	bits &= 3;
	count += count;
	v |= (*(volatile u_int8_t *)(MPC106_V_ISA_IO_SPACE + 0x01f4)) & ~3;
	while(count--) {
		v ^= bits;
		for(i = 100000; i > 0; i--)
			*(volatile u_int8_t *)(MPC106_V_ISA_IO_SPACE + 0x01f4) = v;
	}
	*(u_int8_t *)(MPC106_V_ISA_IO_SPACE + 0x01f4) &= ~3;
}
#endif /* DEBUG */

#endif /*_MACHINE_PIO_H_*/