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
|
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* IO header file
*
* Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
*/
#ifndef __ASM_M68K_IO_H__
#define __ASM_M68K_IO_H__
#include <asm/byteorder.h>
#ifndef _IO_BASE
#define _IO_BASE 0
#endif
#define __raw_readb(addr) (*(volatile u8 *)(addr))
#define __raw_readw(addr) (*(volatile u16 *)(addr))
#define __raw_readl(addr) (*(volatile u32 *)(addr))
#define __raw_writeb(b,addr) ((*(volatile u8 *) (addr)) = (b))
#define __raw_writew(w,addr) ((*(volatile u16 *) (addr)) = (w))
#define __raw_writel(l,addr) ((*(volatile u32 *) (addr)) = (l))
#define readb(addr) in_8((volatile u8 *)(addr))
#define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
#if !defined(__BIG_ENDIAN)
#define readw(addr) (*(volatile u16 *) (addr))
#define readl(addr) (*(volatile u32 *) (addr))
#define writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
#define writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
#else
#define readw(addr) in_be16((volatile u16 *)(addr))
#define readl(addr) in_be32((volatile u32 *)(addr))
#define writew(b,addr) out_be16((volatile u16 *)(addr),(b))
#define writel(b,addr) out_be32((volatile u32 *)(addr),(b))
#endif
/*
* The insw/outsw/insl/outsl macros don't do byte-swapping.
* They are only used in practice for transferring buffers which
* are arrays of bytes, and byte-swapping is not appropriate in
* that case. - paulus
*/
#define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
#define outsb(port, buf, ns) _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
#define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define outsw(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
#define outsl(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
#define inb(port) in_8((u8 *)((port)+_IO_BASE))
#define outb(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
#if !defined(__BIG_ENDIAN)
#define inw(port) in_be16((u16 *)((port)+_IO_BASE))
#define outw(val, port) out_be16((u16 *)((port)+_IO_BASE), (val))
#define inl(port) in_be32((u32 *)((port)+_IO_BASE))
#define outl(val, port) out_be32((u32 *)((port)+_IO_BASE), (val))
#else
#define inw(port) in_le16((u16 *)((port)+_IO_BASE))
#define outw(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
#define inl(port) in_le32((u32 *)((port)+_IO_BASE))
#define outl(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
#endif
#define mb() __asm__ __volatile__ ("" : : : "memory")
static inline void _insb(volatile u8 * port, void *buf, int ns)
{
u8 *data = (u8 *) buf;
while (ns--)
*data++ = *port;
}
static inline void _outsb(volatile u8 * port, const void *buf, int ns)
{
u8 *data = (u8 *) buf;
while (ns--)
*port = *data++;
}
static inline void _insw(volatile u16 * port, void *buf, int ns)
{
u16 *data = (u16 *) buf;
while (ns--)
*data++ = __sw16(*port);
}
static inline void _outsw(volatile u16 * port, const void *buf, int ns)
{
u16 *data = (u16 *) buf;
while (ns--) {
*port = __sw16(*data);
data++;
}
}
static inline void _insl(volatile u32 * port, void *buf, int nl)
{
u32 *data = (u32 *) buf;
while (nl--)
*data++ = __sw32(*port);
}
static inline void _outsl(volatile u32 * port, const void *buf, int nl)
{
u32 *data = (u32 *) buf;
while (nl--) {
*port = __sw32(*data);
data++;
}
}
static inline void _insw_ns(volatile u16 * port, void *buf, int ns)
{
u16 *data = (u16 *) buf;
while (ns--)
*data++ = *port;
}
static inline void _outsw_ns(volatile u16 * port, const void *buf, int ns)
{
u16 *data = (u16 *) buf;
while (ns--) {
*port = *data++;
}
}
static inline void _insl_ns(volatile u32 * port, void *buf, int nl)
{
u32 *data = (u32 *) buf;
while (nl--)
*data++ = *port;
}
static inline void _outsl_ns(volatile u32 * port, const void *buf, int nl)
{
u32 *data = (u32 *) buf;
while (nl--) {
*port = *data;
data++;
}
}
/*
* The *_ns versions below don't do byte-swapping.
* Neither do the standard versions now, these are just here
* for older code.
*/
#define insw_ns(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define insl_ns(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
#define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
#define IO_SPACE_LIMIT ~0
/*
* 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
*/
static inline int in_8(volatile u8 * addr)
{
return (int)*addr;
}
static inline void out_8(volatile u8 * addr, int val)
{
*addr = (u8) val;
}
static inline int in_le16(volatile u16 * addr)
{
return __sw16(*addr);
}
static inline int in_be16(volatile u16 * addr)
{
return (*addr & 0xFFFF);
}
static inline void out_le16(volatile u16 * addr, int val)
{
*addr = __sw16(val);
}
static inline void out_be16(volatile u16 * addr, int val)
{
*addr = (u16) val;
}
static inline unsigned in_le32(volatile u32 * addr)
{
return __sw32(*addr);
}
static inline unsigned in_be32(volatile u32 * addr)
{
return (*addr);
}
static inline void out_le32(volatile unsigned *addr, int val)
{
*addr = __sw32(val);
}
static inline void out_be32(volatile unsigned *addr, int val)
{
*addr = val;
}
/* Clear and set bits in one shot. These macros can be used to clear and
* set multiple bits in a register using a single call. These macros can
* also be used to set a multiple-bit bit pattern using a mask, by
* specifying the mask in the 'clear' parameter and the new bit pattern
* in the 'set' parameter.
*/
#define clrbits(type, addr, clear) \
out_##type((addr), in_##type(addr) & ~(clear))
#define setbits(type, addr, set) \
out_##type((addr), in_##type(addr) | (set))
#define clrsetbits(type, addr, clear, set) \
out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
#define setbits_be32(addr, set) setbits(be32, addr, set)
#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
#define setbits_le32(addr, set) setbits(le32, addr, set)
#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
#define setbits_be16(addr, set) setbits(be16, addr, set)
#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
#define setbits_le16(addr, set) setbits(le16, addr, set)
#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
#define clrbits_8(addr, clear) clrbits(8, addr, clear)
#define setbits_8(addr, set) setbits(8, addr, set)
#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
static inline void sync(void)
{
/* This sync function is for PowerPC or other architecture instruction
* ColdFire does not have this instruction. Dummy function, added for
* compatibility (CFI driver)
*/
}
#include <asm-generic/io.h>
#endif /* __ASM_M68K_IO_H__ */
|