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-rw-r--r--arch/m68k/include/asm/raw_io.h347
1 files changed, 347 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/raw_io.h b/arch/m68k/include/asm/raw_io.h
new file mode 100644
index 000000000000..d9eb9834ccc8
--- /dev/null
+++ b/arch/m68k/include/asm/raw_io.h
@@ -0,0 +1,347 @@
1/*
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#include <asm/types.h>
14
15
16/* Values for nocacheflag and cmode */
17#define IOMAP_FULL_CACHING 0
18#define IOMAP_NOCACHE_SER 1
19#define IOMAP_NOCACHE_NONSER 2
20#define IOMAP_WRITETHROUGH 3
21
22extern void iounmap(void __iomem *addr);
23
24extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
25 int cacheflag);
26extern void __iounmap(void *addr, unsigned long size);
27
28
29/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
30 * two accesses to memory, which may be undesirable for some devices.
31 */
32#define in_8(addr) \
33 ({ u8 __v = (*(__force volatile u8 *) (addr)); __v; })
34#define in_be16(addr) \
35 ({ u16 __v = (*(__force volatile u16 *) (addr)); __v; })
36#define in_be32(addr) \
37 ({ u32 __v = (*(__force volatile u32 *) (addr)); __v; })
38#define in_le16(addr) \
39 ({ u16 __v = le16_to_cpu(*(__force volatile __le16 *) (addr)); __v; })
40#define in_le32(addr) \
41 ({ u32 __v = le32_to_cpu(*(__force volatile __le32 *) (addr)); __v; })
42
43#define out_8(addr,b) (void)((*(__force volatile u8 *) (addr)) = (b))
44#define out_be16(addr,w) (void)((*(__force volatile u16 *) (addr)) = (w))
45#define out_be32(addr,l) (void)((*(__force volatile u32 *) (addr)) = (l))
46#define out_le16(addr,w) (void)((*(__force volatile __le16 *) (addr)) = cpu_to_le16(w))
47#define out_le32(addr,l) (void)((*(__force volatile __le32 *) (addr)) = cpu_to_le32(l))
48
49#define raw_inb in_8
50#define raw_inw in_be16
51#define raw_inl in_be32
52#define __raw_readb in_8
53#define __raw_readw in_be16
54#define __raw_readl in_be32
55
56#define raw_outb(val,port) out_8((port),(val))
57#define raw_outw(val,port) out_be16((port),(val))
58#define raw_outl(val,port) out_be32((port),(val))
59#define __raw_writeb(val,addr) out_8((addr),(val))
60#define __raw_writew(val,addr) out_be16((addr),(val))
61#define __raw_writel(val,addr) out_be32((addr),(val))
62
63static inline void raw_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len)
64{
65 unsigned int i;
66
67 for (i = 0; i < len; i++)
68 *buf++ = in_8(port);
69}
70
71static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf,
72 unsigned int len)
73{
74 unsigned int i;
75
76 for (i = 0; i < len; i++)
77 out_8(port, *buf++);
78}
79
80static inline void raw_insw(volatile u16 __iomem *port, u16 *buf, unsigned int nr)
81{
82 unsigned int tmp;
83
84 if (nr & 15) {
85 tmp = (nr & 15) - 1;
86 asm volatile (
87 "1: movew %2@,%0@+; dbra %1,1b"
88 : "=a" (buf), "=d" (tmp)
89 : "a" (port), "0" (buf),
90 "1" (tmp));
91 }
92 if (nr >> 4) {
93 tmp = (nr >> 4) - 1;
94 asm volatile (
95 "1: "
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 "movew %2@,%0@+; "
107 "movew %2@,%0@+; "
108 "movew %2@,%0@+; "
109 "movew %2@,%0@+; "
110 "movew %2@,%0@+; "
111 "movew %2@,%0@+; "
112 "dbra %1,1b"
113 : "=a" (buf), "=d" (tmp)
114 : "a" (port), "0" (buf),
115 "1" (tmp));
116 }
117}
118
119static inline void raw_outsw(volatile u16 __iomem *port, const u16 *buf,
120 unsigned int nr)
121{
122 unsigned int tmp;
123
124 if (nr & 15) {
125 tmp = (nr & 15) - 1;
126 asm volatile (
127 "1: movew %0@+,%2@; dbra %1,1b"
128 : "=a" (buf), "=d" (tmp)
129 : "a" (port), "0" (buf),
130 "1" (tmp));
131 }
132 if (nr >> 4) {
133 tmp = (nr >> 4) - 1;
134 asm volatile (
135 "1: "
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 "movew %0@+,%2@; "
147 "movew %0@+,%2@; "
148 "movew %0@+,%2@; "
149 "movew %0@+,%2@; "
150 "movew %0@+,%2@; "
151 "movew %0@+,%2@; "
152 "dbra %1,1b"
153 : "=a" (buf), "=d" (tmp)
154 : "a" (port), "0" (buf),
155 "1" (tmp));
156 }
157}
158
159static inline void raw_insl(volatile u32 __iomem *port, u32 *buf, unsigned int nr)
160{
161 unsigned int tmp;
162
163 if (nr & 15) {
164 tmp = (nr & 15) - 1;
165 asm volatile (
166 "1: movel %2@,%0@+; dbra %1,1b"
167 : "=a" (buf), "=d" (tmp)
168 : "a" (port), "0" (buf),
169 "1" (tmp));
170 }
171 if (nr >> 4) {
172 tmp = (nr >> 4) - 1;
173 asm volatile (
174 "1: "
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 "movel %2@,%0@+; "
187 "movel %2@,%0@+; "
188 "movel %2@,%0@+; "
189 "movel %2@,%0@+; "
190 "movel %2@,%0@+; "
191 "dbra %1,1b"
192 : "=a" (buf), "=d" (tmp)
193 : "a" (port), "0" (buf),
194 "1" (tmp));
195 }
196}
197
198static inline void raw_outsl(volatile u32 __iomem *port, const u32 *buf,
199 unsigned int nr)
200{
201 unsigned int tmp;
202
203 if (nr & 15) {
204 tmp = (nr & 15) - 1;
205 asm volatile (
206 "1: movel %0@+,%2@; dbra %1,1b"
207 : "=a" (buf), "=d" (tmp)
208 : "a" (port), "0" (buf),
209 "1" (tmp));
210 }
211 if (nr >> 4) {
212 tmp = (nr >> 4) - 1;
213 asm volatile (
214 "1: "
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 "movel %0@+,%2@; "
227 "movel %0@+,%2@; "
228 "movel %0@+,%2@; "
229 "movel %0@+,%2@; "
230 "movel %0@+,%2@; "
231 "dbra %1,1b"
232 : "=a" (buf), "=d" (tmp)
233 : "a" (port), "0" (buf),
234 "1" (tmp));
235 }
236}
237
238
239static inline void raw_insw_swapw(volatile u16 __iomem *port, u16 *buf,
240 unsigned int nr)
241{
242 if ((nr) % 8)
243 __asm__ __volatile__
244 ("\tmovel %0,%/a0\n\t"
245 "movel %1,%/a1\n\t"
246 "movel %2,%/d6\n\t"
247 "subql #1,%/d6\n"
248 "1:\tmovew %/a0@,%/d0\n\t"
249 "rolw #8,%/d0\n\t"
250 "movew %/d0,%/a1@+\n\t"
251 "dbra %/d6,1b"
252 :
253 : "g" (port), "g" (buf), "g" (nr)
254 : "d0", "a0", "a1", "d6");
255 else
256 __asm__ __volatile__
257 ("movel %0,%/a0\n\t"
258 "movel %1,%/a1\n\t"
259 "movel %2,%/d6\n\t"
260 "lsrl #3,%/d6\n\t"
261 "subql #1,%/d6\n"
262 "1:\tmovew %/a0@,%/d0\n\t"
263 "rolw #8,%/d0\n\t"
264 "movew %/d0,%/a1@+\n\t"
265 "movew %/a0@,%/d0\n\t"
266 "rolw #8,%/d0\n\t"
267 "movew %/d0,%/a1@+\n\t"
268 "movew %/a0@,%/d0\n\t"
269 "rolw #8,%/d0\n\t"
270 "movew %/d0,%/a1@+\n\t"
271 "movew %/a0@,%/d0\n\t"
272 "rolw #8,%/d0\n\t"
273 "movew %/d0,%/a1@+\n\t"
274 "movew %/a0@,%/d0\n\t"
275 "rolw #8,%/d0\n\t"
276 "movew %/d0,%/a1@+\n\t"
277 "movew %/a0@,%/d0\n\t"
278 "rolw #8,%/d0\n\t"
279 "movew %/d0,%/a1@+\n\t"
280 "movew %/a0@,%/d0\n\t"
281 "rolw #8,%/d0\n\t"
282 "movew %/d0,%/a1@+\n\t"
283 "movew %/a0@,%/d0\n\t"
284 "rolw #8,%/d0\n\t"
285 "movew %/d0,%/a1@+\n\t"
286 "dbra %/d6,1b"
287 :
288 : "g" (port), "g" (buf), "g" (nr)
289 : "d0", "a0", "a1", "d6");
290}
291
292static inline void raw_outsw_swapw(volatile u16 __iomem *port, const u16 *buf,
293 unsigned int nr)
294{
295 if ((nr) % 8)
296 __asm__ __volatile__
297 ("movel %0,%/a0\n\t"
298 "movel %1,%/a1\n\t"
299 "movel %2,%/d6\n\t"
300 "subql #1,%/d6\n"
301 "1:\tmovew %/a1@+,%/d0\n\t"
302 "rolw #8,%/d0\n\t"
303 "movew %/d0,%/a0@\n\t"
304 "dbra %/d6,1b"
305 :
306 : "g" (port), "g" (buf), "g" (nr)
307 : "d0", "a0", "a1", "d6");
308 else
309 __asm__ __volatile__
310 ("movel %0,%/a0\n\t"
311 "movel %1,%/a1\n\t"
312 "movel %2,%/d6\n\t"
313 "lsrl #3,%/d6\n\t"
314 "subql #1,%/d6\n"
315 "1:\tmovew %/a1@+,%/d0\n\t"
316 "rolw #8,%/d0\n\t"
317 "movew %/d0,%/a0@\n\t"
318 "movew %/a1@+,%/d0\n\t"
319 "rolw #8,%/d0\n\t"
320 "movew %/d0,%/a0@\n\t"
321 "movew %/a1@+,%/d0\n\t"
322 "rolw #8,%/d0\n\t"
323 "movew %/d0,%/a0@\n\t"
324 "movew %/a1@+,%/d0\n\t"
325 "rolw #8,%/d0\n\t"
326 "movew %/d0,%/a0@\n\t"
327 "movew %/a1@+,%/d0\n\t"
328 "rolw #8,%/d0\n\t"
329 "movew %/d0,%/a0@\n\t"
330 "movew %/a1@+,%/d0\n\t"
331 "rolw #8,%/d0\n\t"
332 "movew %/d0,%/a0@\n\t"
333 "movew %/a1@+,%/d0\n\t"
334 "rolw #8,%/d0\n\t"
335 "movew %/d0,%/a0@\n\t"
336 "movew %/a1@+,%/d0\n\t"
337 "rolw #8,%/d0\n\t"
338 "movew %/d0,%/a0@\n\t"
339 "dbra %/d6,1b"
340 :
341 : "g" (port), "g" (buf), "g" (nr)
342 : "d0", "a0", "a1", "d6");
343}
344
345#endif /* __KERNEL__ */
346
347#endif /* _RAW_IO_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-12 11:45:46 -0500