1 /* $OpenBSD: pio.h,v 1.9 2002/09/15 09:01:59 deraadt Exp $ */
2
3 /*
4 * Copyright (c) 1997 Per Fogelstrom, Opsycon AB and RTMX Inc, USA.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed under OpenBSD by
17 * Per Fogelstrom Opsycon AB for RTMX Inc, North Carolina, USA.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 */
34
35 #ifndef _POWERPC_PIO_H_
36 #define _POWERPC_PIO_H_
37 /*
38 * I/O macros.
39 */
40 void *mapiodev(paddr_t pa, psize_t len);
41 void unmapiodev(void * va, psize_t len);
42
43 static __inline void
__outb(volatile u_int8_t * a,int v)44 __outb(volatile u_int8_t *a, int v)
45 {
46 *a = v;
47 __asm__ volatile("eieio");
48 }
49
50 static __inline void
__outw(volatile u_int16_t * a,u_int16_t v)51 __outw(volatile u_int16_t *a, u_int16_t v)
52 {
53 *a = v;
54 __asm__ volatile("eieio");
55 }
56
57 static __inline void
__outl(volatile u_int32_t * a,int v)58 __outl(volatile u_int32_t *a, int v)
59 {
60 *a = v;
61 __asm__ volatile("eieio");
62 }
63
64 static __inline void
__outwrb(volatile u_int16_t * a,u_int16_t v)65 __outwrb(volatile u_int16_t *a, u_int16_t v)
66 {
67 u_int32_t _p_ = (u_int32_t)a;
68
69 __asm__ volatile("sthbrx %0, 0, %1" :: "r"(v), "r"(_p_));
70 __asm__ volatile("eieio");
71 }
72
73 static __inline void
__outlrb(volatile u_int32_t * a,u_int32_t v)74 __outlrb(volatile u_int32_t *a, u_int32_t v)
75 {
76 u_int32_t _p_ = (u_int32_t)a;
77
78 __asm__ volatile("stwbrx %0, 0, %1" :: "r"(v), "r"(_p_));
79 __asm__ volatile("eieio");
80 }
81
82 static __inline u_int8_t
__inb(volatile u_int8_t * a)83 __inb(volatile u_int8_t *a)
84 {
85 u_int8_t _v_;
86
87 __asm__ volatile("eieio");
88 _v_ = *a;
89 return _v_;
90 }
91
92 static __inline u_int16_t
__inw(volatile u_int16_t * a)93 __inw(volatile u_int16_t *a)
94 {
95 u_int16_t _v_;
96
97 __asm__ volatile("eieio");
98 _v_ = *a;
99 return _v_;
100 }
101
102 static __inline u_int32_t
__inl(volatile u_int32_t * a)103 __inl(volatile u_int32_t *a)
104 {
105 u_int32_t _v_;
106
107 __asm__ volatile("eieio");
108 _v_ = *a;
109 return _v_;
110 }
111
112 static __inline u_int16_t
__inwrb(volatile u_int16_t * a)113 __inwrb(volatile u_int16_t *a)
114 {
115 u_int16_t _v_;
116 u_int32_t _p_ = (u_int32_t)a;
117
118 __asm__ volatile("eieio");
119 __asm__ volatile("lhbrx %0, 0, %1" : "=r"(_v_) : "r"(_p_));
120 return _v_;
121 }
122
123 static __inline u_int32_t
__inlrb(volatile u_int32_t * a)124 __inlrb(volatile u_int32_t *a)
125 {
126 u_int32_t _v_;
127 u_int32_t _p_ = (u_int32_t)a;
128
129 __asm__ volatile("eieio");
130 __asm__ volatile("lwbrx %0, 0, %1" : "=r"(_v_) : "r"(_p_));
131 return _v_;
132 }
133
134
135 #define outb(a,v) (__outb((volatile u_int8_t *)(a), v))
136 #define out8(a,v) outb(a,v)
137 #define outw(a,v) (__outw((volatile u_int16_t *)(a), v))
138 #define out16(a,v) outw(a,v)
139 #define outl(a,v) (__outl((volatile u_int32_t *)(a), v))
140 #define out32(a,v) outl(a,v)
141 #define inb(a) (__inb((volatile u_int8_t *)(a)))
142 #define in8(a) inb(a)
143 #define inw(a) (__inw((volatile u_int16_t *)(a)))
144 #define in16(a) inw(a)
145 #define inl(a) (__inl((volatile u_int32_t *)(a)))
146 #define in32(a) inl(a)
147
148 #define out8rb(a,v) outb(a,v)
149 #define outwrb(a,v) (__outwrb((volatile u_int16_t *)(a), v))
150 #define out16rb(a,v) outwrb(a,v)
151 #define outlrb(a,v) (__outlrb((volatile u_int32_t *)(a), v))
152 #define out32rb(a,v) outlrb(a,v)
153 #define in8rb(a) inb(a)
154 #define inwrb(a) (__inwrb((volatile u_int16_t *)(a)))
155 #define in16rb(a) inwrb(a)
156 #define inlrb(a) (__inlrb((volatile u_int32_t *)(a)))
157 #define in32rb(a) inlrb(a)
158
159 #ifdef DEBUG_SPEC
160 static __inline void
__flash_led(bits,count)161 __flash_led(bits, count)
162 int bits;
163 {
164 int i, v = 0;
165
166 if(bits == 0) {
167 v = 1; bits = 3;
168 }
169 bits &= 3;
170 count += count;
171 v |= (*(volatile u_int8_t *)(MPC106_V_ISA_IO_SPACE + 0x01f4)) & ~3;
172 while(count--) {
173 v ^= bits;
174 for(i = 100000; i > 0; i--)
175 *(volatile u_int8_t *)(MPC106_V_ISA_IO_SPACE + 0x01f4) = v;
176 }
177 *(u_int8_t *)(MPC106_V_ISA_IO_SPACE + 0x01f4) &= ~3;
178 }
179 #endif /* DEBUG */
180
181 #endif /*_POWERPC_PIO_H_*/
182