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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-m68k/] [raw_io.h] - Blame information for rev 1765

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Line No. Rev Author Line
1 1276 phoenix
/*
2
 * linux/include/asm-m68k/raw_io.h
3
 *
4
 * 10/20/00 RZ: - created from bits of io.h and ide.h to cleanup namespace
5
 *
6
 */
7
 
8
#ifndef _RAW_IO_H
9
#define _RAW_IO_H
10
 
11
#ifdef __KERNEL__
12
 
13
 
14
/* Values for nocacheflag and cmode */
15
#define IOMAP_FULL_CACHING              0
16
#define IOMAP_NOCACHE_SER               1
17
#define IOMAP_NOCACHE_NONSER            2
18
#define IOMAP_WRITETHROUGH              3
19
 
20
extern void iounmap(void *addr);
21
 
22
extern void *__ioremap(unsigned long physaddr, unsigned long size,
23
                       int cacheflag);
24
extern void __iounmap(void *addr, unsigned long size);
25
 
26
 
27
/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
28
 * two accesses to memory, which may be undesirable for some devices.
29
 */
30
#define in_8(addr) \
31
    ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
32
#define in_be16(addr) \
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    ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
34
#define in_be32(addr) \
35
    ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
36
#define in_le16(addr) \
37
    ({ unsigned short __v = le16_to_cpu(*(volatile unsigned short *) (addr)); __v; })
38
#define in_le32(addr) \
39
    ({ unsigned int __v = le32_to_cpu(*(volatile unsigned int *) (addr)); __v; })
40
 
41
#define out_8(addr,b) (void)((*(volatile unsigned char *) (addr)) = (b))
42
#define out_be16(addr,w) (void)((*(volatile unsigned short *) (addr)) = (w))
43
#define out_be32(addr,l) (void)((*(volatile unsigned int *) (addr)) = (l))
44
#define out_le16(addr,w) (void)((*(volatile unsigned short *) (addr)) = cpu_to_le16(w))
45
#define out_le32(addr,l) (void)((*(volatile unsigned int *) (addr)) = cpu_to_le32(l))
46
 
47
#define raw_inb in_8
48
#define raw_inw in_be16
49
#define raw_inl in_be32
50
 
51
#define raw_outb(val,port) out_8((port),(val))
52
#define raw_outw(val,port) out_be16((port),(val))
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#define raw_outl(val,port) out_be32((port),(val))
54
 
55
static inline void raw_insb(volatile unsigned char *port, unsigned char *buf,
56
                            unsigned int len)
57
{
58
        unsigned int i;
59
 
60
        for (i = 0; i < len; i++)
61
                *buf++ = in_8(port);
62
}
63
 
64
static inline void raw_outsb(volatile unsigned char *port,
65
                             const unsigned char *buf, unsigned int len)
66
{
67
        unsigned int i;
68
 
69
        for (i = 0; i < len; i++)
70
                out_8(port, *buf++);
71
}
72
 
73
static inline void raw_insw(volatile unsigned short *port, unsigned short *buf,
74
                            unsigned int nr)
75
{
76
        unsigned int tmp;
77
 
78
        if (nr & 15) {
79
                tmp = (nr & 15) - 1;
80
                asm volatile (
81
                        "1: movew %2@,%0@+; dbra %1,1b"
82
                        : "=a" (buf), "=d" (tmp)
83
                        : "a" (port), "0" (buf),
84
                          "1" (tmp));
85
        }
86
        if (nr >> 4) {
87
                tmp = (nr >> 4) - 1;
88
                asm volatile (
89
                        "1: "
90
                        "movew %2@,%0@+; "
91
                        "movew %2@,%0@+; "
92
                        "movew %2@,%0@+; "
93
                        "movew %2@,%0@+; "
94
                        "movew %2@,%0@+; "
95
                        "movew %2@,%0@+; "
96
                        "movew %2@,%0@+; "
97
                        "movew %2@,%0@+; "
98
                        "movew %2@,%0@+; "
99
                        "movew %2@,%0@+; "
100
                        "movew %2@,%0@+; "
101
                        "movew %2@,%0@+; "
102
                        "movew %2@,%0@+; "
103
                        "movew %2@,%0@+; "
104
                        "movew %2@,%0@+; "
105
                        "movew %2@,%0@+; "
106
                        "dbra %1,1b"
107
                        : "=a" (buf), "=d" (tmp)
108
                        : "a" (port), "0" (buf),
109
                          "1" (tmp));
110
        }
111
}
112
 
113
static inline void raw_outsw(volatile unsigned short *port,
114
                             const unsigned short *buf, unsigned int nr)
115
{
116
        unsigned int tmp;
117
 
118
        if (nr & 15) {
119
                tmp = (nr & 15) - 1;
120
                asm volatile (
121
                        "1: movew %0@+,%2@; dbra %1,1b"
122
                        : "=a" (buf), "=d" (tmp)
123
                        : "a" (port), "0" (buf),
124
                          "1" (tmp));
125
        }
126
        if (nr >> 4) {
127
                tmp = (nr >> 4) - 1;
128
                asm volatile (
129
                        "1: "
130
                        "movew %0@+,%2@; "
131
                        "movew %0@+,%2@; "
132
                        "movew %0@+,%2@; "
133
                        "movew %0@+,%2@; "
134
                        "movew %0@+,%2@; "
135
                        "movew %0@+,%2@; "
136
                        "movew %0@+,%2@; "
137
                        "movew %0@+,%2@; "
138
                        "movew %0@+,%2@; "
139
                        "movew %0@+,%2@; "
140
                        "movew %0@+,%2@; "
141
                        "movew %0@+,%2@; "
142
                        "movew %0@+,%2@; "
143
                        "movew %0@+,%2@; "
144
                        "movew %0@+,%2@; "
145
                        "movew %0@+,%2@; "
146
                        "dbra %1,1b"
147
                        : "=a" (buf), "=d" (tmp)
148
                        : "a" (port), "0" (buf),
149
                          "1" (tmp));
150
        }
151
}
152
 
153
static inline void raw_insl(volatile unsigned int *port, unsigned int *buf,
154
                            unsigned int nr)
155
{
156
        unsigned int tmp;
157
 
158
        if (nr & 15) {
159
                tmp = (nr & 15) - 1;
160
                asm volatile (
161
                        "1: movel %2@,%0@+; dbra %1,1b"
162
                        : "=a" (buf), "=d" (tmp)
163
                        : "a" (port), "0" (buf),
164
                          "1" (tmp));
165
        }
166
        if (nr >> 4) {
167
                tmp = (nr >> 4) - 1;
168
                asm volatile (
169
                        "1: "
170
                        "movel %2@,%0@+; "
171
                        "movel %2@,%0@+; "
172
                        "movel %2@,%0@+; "
173
                        "movel %2@,%0@+; "
174
                        "movel %2@,%0@+; "
175
                        "movel %2@,%0@+; "
176
                        "movel %2@,%0@+; "
177
                        "movel %2@,%0@+; "
178
                        "movel %2@,%0@+; "
179
                        "movel %2@,%0@+; "
180
                        "movel %2@,%0@+; "
181
                        "movel %2@,%0@+; "
182
                        "movel %2@,%0@+; "
183
                        "movel %2@,%0@+; "
184
                        "movel %2@,%0@+; "
185
                        "movel %2@,%0@+; "
186
                        "dbra %1,1b"
187
                        : "=a" (buf), "=d" (tmp)
188
                        : "a" (port), "0" (buf),
189
                          "1" (tmp));
190
        }
191
}
192
 
193
static inline void raw_outsl(volatile unsigned int *port,
194
                             const unsigned int *buf, unsigned int nr)
195
{
196
        unsigned int tmp;
197
 
198
        if (nr & 15) {
199
                tmp = (nr & 15) - 1;
200
                asm volatile (
201
                        "1: movel %0@+,%2@; dbra %1,1b"
202
                        : "=a" (buf), "=d" (tmp)
203
                        : "a" (port), "0" (buf),
204
                          "1" (tmp));
205
        }
206
        if (nr >> 4) {
207
                tmp = (nr >> 4) - 1;
208
                asm volatile (
209
                        "1: "
210
                        "movel %0@+,%2@; "
211
                        "movel %0@+,%2@; "
212
                        "movel %0@+,%2@; "
213
                        "movel %0@+,%2@; "
214
                        "movel %0@+,%2@; "
215
                        "movel %0@+,%2@; "
216
                        "movel %0@+,%2@; "
217
                        "movel %0@+,%2@; "
218
                        "movel %0@+,%2@; "
219
                        "movel %0@+,%2@; "
220
                        "movel %0@+,%2@; "
221
                        "movel %0@+,%2@; "
222
                        "movel %0@+,%2@; "
223
                        "movel %0@+,%2@; "
224
                        "movel %0@+,%2@; "
225
                        "movel %0@+,%2@; "
226
                        "dbra %1,1b"
227
                        : "=a" (buf), "=d" (tmp)
228
                        : "a" (port), "0" (buf),
229
                          "1" (tmp));
230
        }
231
}
232
 
233
 
234
static inline void raw_insw_swapw(volatile unsigned short *port,
235
                                  unsigned short *buf, unsigned int nr)
236
{
237
    if ((nr) % 8)
238
        __asm__ __volatile__
239
               ("\tmovel %0,%/a0\n\t"
240
                "movel %1,%/a1\n\t"
241
                "movel %2,%/d6\n\t"
242
                "subql #1,%/d6\n"
243
                "1:\tmovew %/a0@,%/d0\n\t"
244
                "rolw  #8,%/d0\n\t"
245
                "movew %/d0,%/a1@+\n\t"
246
                "dbra %/d6,1b"
247
                :
248
                : "g" (port), "g" (buf), "g" (nr)
249
                : "d0", "a0", "a1", "d6");
250
    else
251
        __asm__ __volatile__
252
               ("movel %0,%/a0\n\t"
253
                "movel %1,%/a1\n\t"
254
                "movel %2,%/d6\n\t"
255
                "lsrl  #3,%/d6\n\t"
256
                "subql #1,%/d6\n"
257
                "1:\tmovew %/a0@,%/d0\n\t"
258
                "rolw  #8,%/d0\n\t"
259
                "movew %/d0,%/a1@+\n\t"
260
                "movew %/a0@,%/d0\n\t"
261
                "rolw  #8,%/d0\n\t"
262
                "movew %/d0,%/a1@+\n\t"
263
                "movew %/a0@,%/d0\n\t"
264
                "rolw  #8,%/d0\n\t"
265
                "movew %/d0,%/a1@+\n\t"
266
                "movew %/a0@,%/d0\n\t"
267
                "rolw  #8,%/d0\n\t"
268
                "movew %/d0,%/a1@+\n\t"
269
                "movew %/a0@,%/d0\n\t"
270
                "rolw  #8,%/d0\n\t"
271
                "movew %/d0,%/a1@+\n\t"
272
                "movew %/a0@,%/d0\n\t"
273
                "rolw  #8,%/d0\n\t"
274
                "movew %/d0,%/a1@+\n\t"
275
                "movew %/a0@,%/d0\n\t"
276
                "rolw  #8,%/d0\n\t"
277
                "movew %/d0,%/a1@+\n\t"
278
                "movew %/a0@,%/d0\n\t"
279
                "rolw  #8,%/d0\n\t"
280
                "movew %/d0,%/a1@+\n\t"
281
                "dbra %/d6,1b"
282
                :
283
                : "g" (port), "g" (buf), "g" (nr)
284
                : "d0", "a0", "a1", "d6");
285
}
286
 
287
static inline void raw_outsw_swapw(volatile unsigned short *port,
288
                                   const unsigned short *buf, unsigned int nr)
289
{
290
    if ((nr) % 8)
291
        __asm__ __volatile__
292
               ("movel %0,%/a0\n\t"
293
                "movel %1,%/a1\n\t"
294
                "movel %2,%/d6\n\t"
295
                "subql #1,%/d6\n"
296
                "1:\tmovew %/a1@+,%/d0\n\t"
297
                "rolw  #8,%/d0\n\t"
298
                "movew %/d0,%/a0@\n\t"
299
                "dbra %/d6,1b"
300
                :
301
                : "g" (port), "g" (buf), "g" (nr)
302
                : "d0", "a0", "a1", "d6");
303
    else
304
        __asm__ __volatile__
305
               ("movel %0,%/a0\n\t"
306
                "movel %1,%/a1\n\t"
307
                "movel %2,%/d6\n\t"
308
                "lsrl  #3,%/d6\n\t"
309
                "subql #1,%/d6\n"
310
                "1:\tmovew %/a1@+,%/d0\n\t"
311
                "rolw  #8,%/d0\n\t"
312
                "movew %/d0,%/a0@\n\t"
313
                "movew %/a1@+,%/d0\n\t"
314
                "rolw  #8,%/d0\n\t"
315
                "movew %/d0,%/a0@\n\t"
316
                "movew %/a1@+,%/d0\n\t"
317
                "rolw  #8,%/d0\n\t"
318
                "movew %/d0,%/a0@\n\t"
319
                "movew %/a1@+,%/d0\n\t"
320
                "rolw  #8,%/d0\n\t"
321
                "movew %/d0,%/a0@\n\t"
322
                "movew %/a1@+,%/d0\n\t"
323
                "rolw  #8,%/d0\n\t"
324
                "movew %/d0,%/a0@\n\t"
325
                "movew %/a1@+,%/d0\n\t"
326
                "rolw  #8,%/d0\n\t"
327
                "movew %/d0,%/a0@\n\t"
328
                "movew %/a1@+,%/d0\n\t"
329
                "rolw  #8,%/d0\n\t"
330
                "movew %/d0,%/a0@\n\t"
331
                "movew %/a1@+,%/d0\n\t"
332
                "rolw  #8,%/d0\n\t"
333
                "movew %/d0,%/a0@\n\t"
334
                "dbra %/d6,1b"
335
                :
336
                : "g" (port), "g" (buf), "g" (nr)
337
                : "d0", "a0", "a1", "d6");
338
}
339
 
340
 
341
#endif /* __KERNEL__ */
342
 
343
#endif /* _RAW_IO_H */

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