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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
---|---|
2 | /* |
3 | * linux/include/asm-m68k/raw_io.h |
4 | * |
5 | * 10/20/00 RZ: - created from bits of io.h and ide.h to cleanup namespace |
6 | * |
7 | */ |
8 | |
9 | #ifndef _RAW_IO_H |
10 | #define _RAW_IO_H |
11 | |
12 | #ifdef __KERNEL__ |
13 | |
14 | #include <asm/byteorder.h> |
15 | |
16 | /* ++roman: The assignments to temp. vars avoid that gcc sometimes generates |
17 | * two accesses to memory, which may be undesirable for some devices. |
18 | */ |
19 | #define in_8(addr) \ |
20 | ({ u8 __v = (*(__force const volatile u8 *) (unsigned long)(addr)); __v; }) |
21 | #define in_be16(addr) \ |
22 | ({ u16 __v = (*(__force const volatile u16 *) (unsigned long)(addr)); __v; }) |
23 | #define in_be32(addr) \ |
24 | ({ u32 __v = (*(__force const volatile u32 *) (unsigned long)(addr)); __v; }) |
25 | #define in_le16(addr) \ |
26 | ({ u16 __v = le16_to_cpu(*(__force const volatile __le16 *) (unsigned long)(addr)); __v; }) |
27 | #define in_le32(addr) \ |
28 | ({ u32 __v = le32_to_cpu(*(__force const volatile __le32 *) (unsigned long)(addr)); __v; }) |
29 | |
30 | #define out_8(addr,b) (void)((*(__force volatile u8 *) (unsigned long)(addr)) = (b)) |
31 | #define out_be16(addr,w) (void)((*(__force volatile u16 *) (unsigned long)(addr)) = (w)) |
32 | #define out_be32(addr,l) (void)((*(__force volatile u32 *) (unsigned long)(addr)) = (l)) |
33 | #define out_le16(addr,w) (void)((*(__force volatile __le16 *) (unsigned long)(addr)) = cpu_to_le16(w)) |
34 | #define out_le32(addr,l) (void)((*(__force volatile __le32 *) (unsigned long)(addr)) = cpu_to_le32(l)) |
35 | |
36 | #define raw_inb in_8 |
37 | #define raw_inw in_be16 |
38 | #define raw_inl in_be32 |
39 | #define __raw_readb in_8 |
40 | #define __raw_readw in_be16 |
41 | #define __raw_readl in_be32 |
42 | |
43 | #define raw_outb(val,port) out_8((port),(val)) |
44 | #define raw_outw(val,port) out_be16((port),(val)) |
45 | #define raw_outl(val,port) out_be32((port),(val)) |
46 | #define __raw_writeb(val,addr) out_8((addr),(val)) |
47 | #define __raw_writew(val,addr) out_be16((addr),(val)) |
48 | #define __raw_writel(val,addr) out_be32((addr),(val)) |
49 | |
50 | /* |
51 | * Atari ROM port (cartridge port) ISA adapter, used for the EtherNEC NE2000 |
52 | * network card driver. |
53 | * The ISA adapter connects address lines A9-A13 to ISA address lines A0-A4, |
54 | * and hardwires the rest of the ISA addresses for a base address of 0x300. |
55 | * |
56 | * Data lines D8-D15 are connected to ISA data lines D0-D7 for reading. |
57 | * For writes, address lines A1-A8 are latched to ISA data lines D0-D7 |
58 | * (meaning the bit pattern on A1-A8 can be read back as byte). |
59 | * |
60 | * Read and write operations are distinguished by the base address used: |
61 | * reads are from the ROM A side range, writes are through the B side range |
62 | * addresses (A side base + 0x10000). |
63 | * |
64 | * Reads and writes are byte only. |
65 | * |
66 | * 16 bit reads and writes are necessary for the NetUSBee adapter's USB |
67 | * chipset - 16 bit words are read straight off the ROM port while 16 bit |
68 | * reads are split into two byte writes. The low byte is latched to the |
69 | * NetUSBee buffer by a read from the _read_ window (with the data pattern |
70 | * asserted as A1-A8 address pattern). The high byte is then written to the |
71 | * write range as usual, completing the write cycle. |
72 | */ |
73 | |
74 | #if defined(CONFIG_ATARI_ROM_ISA) |
75 | #define rom_in_8(addr) \ |
76 | ({ u16 __v = (*(__force const volatile u16 *) (addr)); __v >>= 8; __v; }) |
77 | #define rom_in_be16(addr) \ |
78 | ({ u16 __v = (*(__force const volatile u16 *) (addr)); __v; }) |
79 | #define rom_in_le16(addr) \ |
80 | ({ u16 __v = le16_to_cpu(*(__force const volatile u16 *) (addr)); __v; }) |
81 | |
82 | #define rom_out_8(addr, b) \ |
83 | (void)({u8 __maybe_unused __w, __v = (b); u32 _addr = ((u32) (addr)); \ |
84 | __w = ((*(__force volatile u8 *) ((_addr | 0x10000) + (__v<<1)))); }) |
85 | #define rom_out_be16(addr, w) \ |
86 | (void)({u16 __maybe_unused __w, __v = (w); u32 _addr = ((u32) (addr)); \ |
87 | __w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v & 0xFF)<<1)))); \ |
88 | __w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v >> 8)<<1)))); }) |
89 | #define rom_out_le16(addr, w) \ |
90 | (void)({u16 __maybe_unused __w, __v = (w); u32 _addr = ((u32) (addr)); \ |
91 | __w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v >> 8)<<1)))); \ |
92 | __w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v & 0xFF)<<1)))); }) |
93 | |
94 | #define raw_rom_inb rom_in_8 |
95 | #define raw_rom_inw rom_in_be16 |
96 | |
97 | #define raw_rom_outb(val, port) rom_out_8((port), (val)) |
98 | #define raw_rom_outw(val, port) rom_out_be16((port), (val)) |
99 | #endif /* CONFIG_ATARI_ROM_ISA */ |
100 | |
101 | static inline void raw_insb(const volatile u8 __iomem *port, u8 *buf, |
102 | unsigned int len) |
103 | { |
104 | unsigned int i; |
105 | |
106 | for (i = 0; i < len; i++) |
107 | *buf++ = in_8(port); |
108 | } |
109 | |
110 | static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf, |
111 | unsigned int nr) |
112 | { |
113 | unsigned int tmp; |
114 | |
115 | if (nr & 15) { |
116 | tmp = (nr & 15) - 1; |
117 | asm volatile ( |
118 | "1: moveb %0@+,%2@; dbra %1,1b" |
119 | : "=a" (buf), "=d" (tmp) |
120 | : "a" (port), "0" (buf), |
121 | "1" (tmp)); |
122 | } |
123 | if (nr >> 4) { |
124 | tmp = (nr >> 4) - 1; |
125 | asm volatile ( |
126 | "1: " |
127 | "moveb %0@+,%2@; " |
128 | "moveb %0@+,%2@; " |
129 | "moveb %0@+,%2@; " |
130 | "moveb %0@+,%2@; " |
131 | "moveb %0@+,%2@; " |
132 | "moveb %0@+,%2@; " |
133 | "moveb %0@+,%2@; " |
134 | "moveb %0@+,%2@; " |
135 | "moveb %0@+,%2@; " |
136 | "moveb %0@+,%2@; " |
137 | "moveb %0@+,%2@; " |
138 | "moveb %0@+,%2@; " |
139 | "moveb %0@+,%2@; " |
140 | "moveb %0@+,%2@; " |
141 | "moveb %0@+,%2@; " |
142 | "moveb %0@+,%2@; " |
143 | "dbra %1,1b" |
144 | : "=a" (buf), "=d" (tmp) |
145 | : "a" (port), "0" (buf), |
146 | "1" (tmp)); |
147 | } |
148 | } |
149 | |
150 | static inline void raw_insw(volatile const u16 __iomem *port, u16 *buf, unsigned int nr) |
151 | { |
152 | unsigned int tmp; |
153 | |
154 | if (nr & 15) { |
155 | tmp = (nr & 15) - 1; |
156 | asm volatile ( |
157 | "1: movew %2@,%0@+; dbra %1,1b" |
158 | : "=a" (buf), "=d" (tmp) |
159 | : "a" (port), "0" (buf), |
160 | "1" (tmp)); |
161 | } |
162 | if (nr >> 4) { |
163 | tmp = (nr >> 4) - 1; |
164 | asm volatile ( |
165 | "1: " |
166 | "movew %2@,%0@+; " |
167 | "movew %2@,%0@+; " |
168 | "movew %2@,%0@+; " |
169 | "movew %2@,%0@+; " |
170 | "movew %2@,%0@+; " |
171 | "movew %2@,%0@+; " |
172 | "movew %2@,%0@+; " |
173 | "movew %2@,%0@+; " |
174 | "movew %2@,%0@+; " |
175 | "movew %2@,%0@+; " |
176 | "movew %2@,%0@+; " |
177 | "movew %2@,%0@+; " |
178 | "movew %2@,%0@+; " |
179 | "movew %2@,%0@+; " |
180 | "movew %2@,%0@+; " |
181 | "movew %2@,%0@+; " |
182 | "dbra %1,1b" |
183 | : "=a" (buf), "=d" (tmp) |
184 | : "a" (port), "0" (buf), |
185 | "1" (tmp)); |
186 | } |
187 | } |
188 | |
189 | static inline void raw_outsw(volatile u16 __iomem *port, const u16 *buf, |
190 | unsigned int nr) |
191 | { |
192 | unsigned int tmp; |
193 | |
194 | if (nr & 15) { |
195 | tmp = (nr & 15) - 1; |
196 | asm volatile ( |
197 | "1: movew %0@+,%2@; dbra %1,1b" |
198 | : "=a" (buf), "=d" (tmp) |
199 | : "a" (port), "0" (buf), |
200 | "1" (tmp)); |
201 | } |
202 | if (nr >> 4) { |
203 | tmp = (nr >> 4) - 1; |
204 | asm volatile ( |
205 | "1: " |
206 | "movew %0@+,%2@; " |
207 | "movew %0@+,%2@; " |
208 | "movew %0@+,%2@; " |
209 | "movew %0@+,%2@; " |
210 | "movew %0@+,%2@; " |
211 | "movew %0@+,%2@; " |
212 | "movew %0@+,%2@; " |
213 | "movew %0@+,%2@; " |
214 | "movew %0@+,%2@; " |
215 | "movew %0@+,%2@; " |
216 | "movew %0@+,%2@; " |
217 | "movew %0@+,%2@; " |
218 | "movew %0@+,%2@; " |
219 | "movew %0@+,%2@; " |
220 | "movew %0@+,%2@; " |
221 | "movew %0@+,%2@; " |
222 | "dbra %1,1b" |
223 | : "=a" (buf), "=d" (tmp) |
224 | : "a" (port), "0" (buf), |
225 | "1" (tmp)); |
226 | } |
227 | } |
228 | |
229 | static inline void raw_insl(const volatile u32 __iomem *port, u32 *buf, unsigned int nr) |
230 | { |
231 | unsigned int tmp; |
232 | |
233 | if (nr & 15) { |
234 | tmp = (nr & 15) - 1; |
235 | asm volatile ( |
236 | "1: movel %2@,%0@+; dbra %1,1b" |
237 | : "=a" (buf), "=d" (tmp) |
238 | : "a" (port), "0" (buf), |
239 | "1" (tmp)); |
240 | } |
241 | if (nr >> 4) { |
242 | tmp = (nr >> 4) - 1; |
243 | asm volatile ( |
244 | "1: " |
245 | "movel %2@,%0@+; " |
246 | "movel %2@,%0@+; " |
247 | "movel %2@,%0@+; " |
248 | "movel %2@,%0@+; " |
249 | "movel %2@,%0@+; " |
250 | "movel %2@,%0@+; " |
251 | "movel %2@,%0@+; " |
252 | "movel %2@,%0@+; " |
253 | "movel %2@,%0@+; " |
254 | "movel %2@,%0@+; " |
255 | "movel %2@,%0@+; " |
256 | "movel %2@,%0@+; " |
257 | "movel %2@,%0@+; " |
258 | "movel %2@,%0@+; " |
259 | "movel %2@,%0@+; " |
260 | "movel %2@,%0@+; " |
261 | "dbra %1,1b" |
262 | : "=a" (buf), "=d" (tmp) |
263 | : "a" (port), "0" (buf), |
264 | "1" (tmp)); |
265 | } |
266 | } |
267 | |
268 | static inline void raw_outsl(volatile u32 __iomem *port, const u32 *buf, |
269 | unsigned int nr) |
270 | { |
271 | unsigned int tmp; |
272 | |
273 | if (nr & 15) { |
274 | tmp = (nr & 15) - 1; |
275 | asm volatile ( |
276 | "1: movel %0@+,%2@; dbra %1,1b" |
277 | : "=a" (buf), "=d" (tmp) |
278 | : "a" (port), "0" (buf), |
279 | "1" (tmp)); |
280 | } |
281 | if (nr >> 4) { |
282 | tmp = (nr >> 4) - 1; |
283 | asm volatile ( |
284 | "1: " |
285 | "movel %0@+,%2@; " |
286 | "movel %0@+,%2@; " |
287 | "movel %0@+,%2@; " |
288 | "movel %0@+,%2@; " |
289 | "movel %0@+,%2@; " |
290 | "movel %0@+,%2@; " |
291 | "movel %0@+,%2@; " |
292 | "movel %0@+,%2@; " |
293 | "movel %0@+,%2@; " |
294 | "movel %0@+,%2@; " |
295 | "movel %0@+,%2@; " |
296 | "movel %0@+,%2@; " |
297 | "movel %0@+,%2@; " |
298 | "movel %0@+,%2@; " |
299 | "movel %0@+,%2@; " |
300 | "movel %0@+,%2@; " |
301 | "dbra %1,1b" |
302 | : "=a" (buf), "=d" (tmp) |
303 | : "a" (port), "0" (buf), |
304 | "1" (tmp)); |
305 | } |
306 | } |
307 | |
308 | |
309 | static inline void raw_insw_swapw(const volatile u16 __iomem *port, u16 *buf, |
310 | unsigned int nr) |
311 | { |
312 | if ((nr) % 8) |
313 | __asm__ __volatile__ |
314 | ("\tmovel %0,%/a0\n\t" |
315 | "movel %1,%/a1\n\t" |
316 | "movel %2,%/d6\n\t" |
317 | "subql #1,%/d6\n" |
318 | "1:\tmovew %/a0@,%/d0\n\t" |
319 | "rolw #8,%/d0\n\t" |
320 | "movew %/d0,%/a1@+\n\t" |
321 | "dbra %/d6,1b" |
322 | : |
323 | : "g" (port), "g" (buf), "g" (nr) |
324 | : "d0", "a0", "a1", "d6"); |
325 | else |
326 | __asm__ __volatile__ |
327 | ("movel %0,%/a0\n\t" |
328 | "movel %1,%/a1\n\t" |
329 | "movel %2,%/d6\n\t" |
330 | "lsrl #3,%/d6\n\t" |
331 | "subql #1,%/d6\n" |
332 | "1:\tmovew %/a0@,%/d0\n\t" |
333 | "rolw #8,%/d0\n\t" |
334 | "movew %/d0,%/a1@+\n\t" |
335 | "movew %/a0@,%/d0\n\t" |
336 | "rolw #8,%/d0\n\t" |
337 | "movew %/d0,%/a1@+\n\t" |
338 | "movew %/a0@,%/d0\n\t" |
339 | "rolw #8,%/d0\n\t" |
340 | "movew %/d0,%/a1@+\n\t" |
341 | "movew %/a0@,%/d0\n\t" |
342 | "rolw #8,%/d0\n\t" |
343 | "movew %/d0,%/a1@+\n\t" |
344 | "movew %/a0@,%/d0\n\t" |
345 | "rolw #8,%/d0\n\t" |
346 | "movew %/d0,%/a1@+\n\t" |
347 | "movew %/a0@,%/d0\n\t" |
348 | "rolw #8,%/d0\n\t" |
349 | "movew %/d0,%/a1@+\n\t" |
350 | "movew %/a0@,%/d0\n\t" |
351 | "rolw #8,%/d0\n\t" |
352 | "movew %/d0,%/a1@+\n\t" |
353 | "movew %/a0@,%/d0\n\t" |
354 | "rolw #8,%/d0\n\t" |
355 | "movew %/d0,%/a1@+\n\t" |
356 | "dbra %/d6,1b" |
357 | : |
358 | : "g" (port), "g" (buf), "g" (nr) |
359 | : "d0", "a0", "a1", "d6"); |
360 | } |
361 | |
362 | static inline void raw_outsw_swapw(volatile u16 __iomem *port, const u16 *buf, |
363 | unsigned int nr) |
364 | { |
365 | if ((nr) % 8) |
366 | __asm__ __volatile__ |
367 | ("movel %0,%/a0\n\t" |
368 | "movel %1,%/a1\n\t" |
369 | "movel %2,%/d6\n\t" |
370 | "subql #1,%/d6\n" |
371 | "1:\tmovew %/a1@+,%/d0\n\t" |
372 | "rolw #8,%/d0\n\t" |
373 | "movew %/d0,%/a0@\n\t" |
374 | "dbra %/d6,1b" |
375 | : |
376 | : "g" (port), "g" (buf), "g" (nr) |
377 | : "d0", "a0", "a1", "d6"); |
378 | else |
379 | __asm__ __volatile__ |
380 | ("movel %0,%/a0\n\t" |
381 | "movel %1,%/a1\n\t" |
382 | "movel %2,%/d6\n\t" |
383 | "lsrl #3,%/d6\n\t" |
384 | "subql #1,%/d6\n" |
385 | "1:\tmovew %/a1@+,%/d0\n\t" |
386 | "rolw #8,%/d0\n\t" |
387 | "movew %/d0,%/a0@\n\t" |
388 | "movew %/a1@+,%/d0\n\t" |
389 | "rolw #8,%/d0\n\t" |
390 | "movew %/d0,%/a0@\n\t" |
391 | "movew %/a1@+,%/d0\n\t" |
392 | "rolw #8,%/d0\n\t" |
393 | "movew %/d0,%/a0@\n\t" |
394 | "movew %/a1@+,%/d0\n\t" |
395 | "rolw #8,%/d0\n\t" |
396 | "movew %/d0,%/a0@\n\t" |
397 | "movew %/a1@+,%/d0\n\t" |
398 | "rolw #8,%/d0\n\t" |
399 | "movew %/d0,%/a0@\n\t" |
400 | "movew %/a1@+,%/d0\n\t" |
401 | "rolw #8,%/d0\n\t" |
402 | "movew %/d0,%/a0@\n\t" |
403 | "movew %/a1@+,%/d0\n\t" |
404 | "rolw #8,%/d0\n\t" |
405 | "movew %/d0,%/a0@\n\t" |
406 | "movew %/a1@+,%/d0\n\t" |
407 | "rolw #8,%/d0\n\t" |
408 | "movew %/d0,%/a0@\n\t" |
409 | "dbra %/d6,1b" |
410 | : |
411 | : "g" (port), "g" (buf), "g" (nr) |
412 | : "d0", "a0", "a1", "d6"); |
413 | } |
414 | |
415 | |
416 | #if defined(CONFIG_ATARI_ROM_ISA) |
417 | static inline void raw_rom_insb(const volatile u8 __iomem *port, u8 *buf, |
418 | unsigned int len) |
419 | { |
420 | unsigned int i; |
421 | |
422 | for (i = 0; i < len; i++) |
423 | *buf++ = rom_in_8(port); |
424 | } |
425 | |
426 | static inline void raw_rom_outsb(volatile u8 __iomem *port, const u8 *buf, |
427 | unsigned int len) |
428 | { |
429 | unsigned int i; |
430 | |
431 | for (i = 0; i < len; i++) |
432 | rom_out_8(port, *buf++); |
433 | } |
434 | |
435 | static inline void raw_rom_insw(const volatile u16 __iomem *port, u16 *buf, |
436 | unsigned int nr) |
437 | { |
438 | unsigned int i; |
439 | |
440 | for (i = 0; i < nr; i++) |
441 | *buf++ = rom_in_be16(port); |
442 | } |
443 | |
444 | static inline void raw_rom_outsw(volatile u16 __iomem *port, const u16 *buf, |
445 | unsigned int nr) |
446 | { |
447 | unsigned int i; |
448 | |
449 | for (i = 0; i < nr; i++) |
450 | rom_out_be16(port, *buf++); |
451 | } |
452 | |
453 | static inline void raw_rom_insw_swapw(const volatile u16 __iomem *port, u16 *buf, |
454 | unsigned int nr) |
455 | { |
456 | unsigned int i; |
457 | |
458 | for (i = 0; i < nr; i++) |
459 | *buf++ = rom_in_le16(port); |
460 | } |
461 | |
462 | static inline void raw_rom_outsw_swapw(volatile u16 __iomem *port, const u16 *buf, |
463 | unsigned int nr) |
464 | { |
465 | unsigned int i; |
466 | |
467 | for (i = 0; i < nr; i++) |
468 | rom_out_le16(port, *buf++); |
469 | } |
470 | #endif /* CONFIG_ATARI_ROM_ISA */ |
471 | |
472 | #endif /* __KERNEL__ */ |
473 | |
474 | #endif /* _RAW_IO_H */ |
475 |
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