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 volatile u8 *) (addr)); __v; })
21 #define in_be16(addr) \
22 ({ u16 __v = (*(__force volatile u16 *) (addr)); __v; })
23 #define in_be32(addr) \
24 ({ u32 __v = (*(__force volatile u32 *) (addr)); __v; })
25 #define in_le16(addr) \
26 ({ u16 __v = le16_to_cpu(*(__force volatile __le16 *) (addr)); __v; })
27 #define in_le32(addr) \
28 ({ u32 __v = le32_to_cpu(*(__force volatile __le32 *) (addr)); __v; })
29
30 #define out_8(addr,b) (void)((*(__force volatile u8 *) (addr)) = (b))
31 #define out_be16(addr,w) (void)((*(__force volatile u16 *) (addr)) = (w))
32 #define out_be32(addr,l) (void)((*(__force volatile u32 *) (addr)) = (l))
33 #define out_le16(addr,w) (void)((*(__force volatile __le16 *) (addr)) = cpu_to_le16(w))
34 #define out_le32(addr,l) (void)((*(__force volatile __le32 *) (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 volatile u16 *) (addr)); __v >>= 8; __v; })
77 #define rom_in_be16(addr) \
78 ({ u16 __v = (*(__force volatile u16 *) (addr)); __v; })
79 #define rom_in_le16(addr) \
80 ({ u16 __v = le16_to_cpu(*(__force volatile u16 *) (addr)); __v; })
81
82 #define rom_out_8(addr, b) \
83 ({u8 __w, __v = (b); u32 _addr = ((u32) (addr)); \
84 __w = ((*(__force volatile u8 *) ((_addr | 0x10000) + (__v<<1)))); })
85 #define rom_out_be16(addr, w) \
86 ({u16 __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 ({u16 __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
raw_insb(volatile u8 __iomem * port,u8 * buf,unsigned int len)101 static inline void raw_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len)
102 {
103 unsigned int i;
104
105 for (i = 0; i < len; i++)
106 *buf++ = in_8(port);
107 }
108
raw_outsb(volatile u8 __iomem * port,const u8 * buf,unsigned int len)109 static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf,
110 unsigned int len)
111 {
112 unsigned int i;
113
114 for (i = 0; i < len; i++)
115 out_8(port, *buf++);
116 }
117
raw_insw(volatile u16 __iomem * port,u16 * buf,unsigned int nr)118 static inline void raw_insw(volatile u16 __iomem *port, u16 *buf, unsigned int nr)
119 {
120 unsigned int tmp;
121
122 if (nr & 15) {
123 tmp = (nr & 15) - 1;
124 asm volatile (
125 "1: movew %2@,%0@+; dbra %1,1b"
126 : "=a" (buf), "=d" (tmp)
127 : "a" (port), "0" (buf),
128 "1" (tmp));
129 }
130 if (nr >> 4) {
131 tmp = (nr >> 4) - 1;
132 asm volatile (
133 "1: "
134 "movew %2@,%0@+; "
135 "movew %2@,%0@+; "
136 "movew %2@,%0@+; "
137 "movew %2@,%0@+; "
138 "movew %2@,%0@+; "
139 "movew %2@,%0@+; "
140 "movew %2@,%0@+; "
141 "movew %2@,%0@+; "
142 "movew %2@,%0@+; "
143 "movew %2@,%0@+; "
144 "movew %2@,%0@+; "
145 "movew %2@,%0@+; "
146 "movew %2@,%0@+; "
147 "movew %2@,%0@+; "
148 "movew %2@,%0@+; "
149 "movew %2@,%0@+; "
150 "dbra %1,1b"
151 : "=a" (buf), "=d" (tmp)
152 : "a" (port), "0" (buf),
153 "1" (tmp));
154 }
155 }
156
raw_outsw(volatile u16 __iomem * port,const u16 * buf,unsigned int nr)157 static inline void raw_outsw(volatile u16 __iomem *port, const u16 *buf,
158 unsigned int nr)
159 {
160 unsigned int tmp;
161
162 if (nr & 15) {
163 tmp = (nr & 15) - 1;
164 asm volatile (
165 "1: movew %0@+,%2@; dbra %1,1b"
166 : "=a" (buf), "=d" (tmp)
167 : "a" (port), "0" (buf),
168 "1" (tmp));
169 }
170 if (nr >> 4) {
171 tmp = (nr >> 4) - 1;
172 asm volatile (
173 "1: "
174 "movew %0@+,%2@; "
175 "movew %0@+,%2@; "
176 "movew %0@+,%2@; "
177 "movew %0@+,%2@; "
178 "movew %0@+,%2@; "
179 "movew %0@+,%2@; "
180 "movew %0@+,%2@; "
181 "movew %0@+,%2@; "
182 "movew %0@+,%2@; "
183 "movew %0@+,%2@; "
184 "movew %0@+,%2@; "
185 "movew %0@+,%2@; "
186 "movew %0@+,%2@; "
187 "movew %0@+,%2@; "
188 "movew %0@+,%2@; "
189 "movew %0@+,%2@; "
190 "dbra %1,1b"
191 : "=a" (buf), "=d" (tmp)
192 : "a" (port), "0" (buf),
193 "1" (tmp));
194 }
195 }
196
raw_insl(volatile u32 __iomem * port,u32 * buf,unsigned int nr)197 static inline void raw_insl(volatile u32 __iomem *port, u32 *buf, unsigned int nr)
198 {
199 unsigned int tmp;
200
201 if (nr & 15) {
202 tmp = (nr & 15) - 1;
203 asm volatile (
204 "1: movel %2@,%0@+; dbra %1,1b"
205 : "=a" (buf), "=d" (tmp)
206 : "a" (port), "0" (buf),
207 "1" (tmp));
208 }
209 if (nr >> 4) {
210 tmp = (nr >> 4) - 1;
211 asm volatile (
212 "1: "
213 "movel %2@,%0@+; "
214 "movel %2@,%0@+; "
215 "movel %2@,%0@+; "
216 "movel %2@,%0@+; "
217 "movel %2@,%0@+; "
218 "movel %2@,%0@+; "
219 "movel %2@,%0@+; "
220 "movel %2@,%0@+; "
221 "movel %2@,%0@+; "
222 "movel %2@,%0@+; "
223 "movel %2@,%0@+; "
224 "movel %2@,%0@+; "
225 "movel %2@,%0@+; "
226 "movel %2@,%0@+; "
227 "movel %2@,%0@+; "
228 "movel %2@,%0@+; "
229 "dbra %1,1b"
230 : "=a" (buf), "=d" (tmp)
231 : "a" (port), "0" (buf),
232 "1" (tmp));
233 }
234 }
235
raw_outsl(volatile u32 __iomem * port,const u32 * buf,unsigned int nr)236 static inline void raw_outsl(volatile u32 __iomem *port, const u32 *buf,
237 unsigned int nr)
238 {
239 unsigned int tmp;
240
241 if (nr & 15) {
242 tmp = (nr & 15) - 1;
243 asm volatile (
244 "1: movel %0@+,%2@; dbra %1,1b"
245 : "=a" (buf), "=d" (tmp)
246 : "a" (port), "0" (buf),
247 "1" (tmp));
248 }
249 if (nr >> 4) {
250 tmp = (nr >> 4) - 1;
251 asm volatile (
252 "1: "
253 "movel %0@+,%2@; "
254 "movel %0@+,%2@; "
255 "movel %0@+,%2@; "
256 "movel %0@+,%2@; "
257 "movel %0@+,%2@; "
258 "movel %0@+,%2@; "
259 "movel %0@+,%2@; "
260 "movel %0@+,%2@; "
261 "movel %0@+,%2@; "
262 "movel %0@+,%2@; "
263 "movel %0@+,%2@; "
264 "movel %0@+,%2@; "
265 "movel %0@+,%2@; "
266 "movel %0@+,%2@; "
267 "movel %0@+,%2@; "
268 "movel %0@+,%2@; "
269 "dbra %1,1b"
270 : "=a" (buf), "=d" (tmp)
271 : "a" (port), "0" (buf),
272 "1" (tmp));
273 }
274 }
275
276
raw_insw_swapw(volatile u16 __iomem * port,u16 * buf,unsigned int nr)277 static inline void raw_insw_swapw(volatile u16 __iomem *port, u16 *buf,
278 unsigned int nr)
279 {
280 if ((nr) % 8)
281 __asm__ __volatile__
282 ("\tmovel %0,%/a0\n\t"
283 "movel %1,%/a1\n\t"
284 "movel %2,%/d6\n\t"
285 "subql #1,%/d6\n"
286 "1:\tmovew %/a0@,%/d0\n\t"
287 "rolw #8,%/d0\n\t"
288 "movew %/d0,%/a1@+\n\t"
289 "dbra %/d6,1b"
290 :
291 : "g" (port), "g" (buf), "g" (nr)
292 : "d0", "a0", "a1", "d6");
293 else
294 __asm__ __volatile__
295 ("movel %0,%/a0\n\t"
296 "movel %1,%/a1\n\t"
297 "movel %2,%/d6\n\t"
298 "lsrl #3,%/d6\n\t"
299 "subql #1,%/d6\n"
300 "1:\tmovew %/a0@,%/d0\n\t"
301 "rolw #8,%/d0\n\t"
302 "movew %/d0,%/a1@+\n\t"
303 "movew %/a0@,%/d0\n\t"
304 "rolw #8,%/d0\n\t"
305 "movew %/d0,%/a1@+\n\t"
306 "movew %/a0@,%/d0\n\t"
307 "rolw #8,%/d0\n\t"
308 "movew %/d0,%/a1@+\n\t"
309 "movew %/a0@,%/d0\n\t"
310 "rolw #8,%/d0\n\t"
311 "movew %/d0,%/a1@+\n\t"
312 "movew %/a0@,%/d0\n\t"
313 "rolw #8,%/d0\n\t"
314 "movew %/d0,%/a1@+\n\t"
315 "movew %/a0@,%/d0\n\t"
316 "rolw #8,%/d0\n\t"
317 "movew %/d0,%/a1@+\n\t"
318 "movew %/a0@,%/d0\n\t"
319 "rolw #8,%/d0\n\t"
320 "movew %/d0,%/a1@+\n\t"
321 "movew %/a0@,%/d0\n\t"
322 "rolw #8,%/d0\n\t"
323 "movew %/d0,%/a1@+\n\t"
324 "dbra %/d6,1b"
325 :
326 : "g" (port), "g" (buf), "g" (nr)
327 : "d0", "a0", "a1", "d6");
328 }
329
raw_outsw_swapw(volatile u16 __iomem * port,const u16 * buf,unsigned int nr)330 static inline void raw_outsw_swapw(volatile u16 __iomem *port, const u16 *buf,
331 unsigned int nr)
332 {
333 if ((nr) % 8)
334 __asm__ __volatile__
335 ("movel %0,%/a0\n\t"
336 "movel %1,%/a1\n\t"
337 "movel %2,%/d6\n\t"
338 "subql #1,%/d6\n"
339 "1:\tmovew %/a1@+,%/d0\n\t"
340 "rolw #8,%/d0\n\t"
341 "movew %/d0,%/a0@\n\t"
342 "dbra %/d6,1b"
343 :
344 : "g" (port), "g" (buf), "g" (nr)
345 : "d0", "a0", "a1", "d6");
346 else
347 __asm__ __volatile__
348 ("movel %0,%/a0\n\t"
349 "movel %1,%/a1\n\t"
350 "movel %2,%/d6\n\t"
351 "lsrl #3,%/d6\n\t"
352 "subql #1,%/d6\n"
353 "1:\tmovew %/a1@+,%/d0\n\t"
354 "rolw #8,%/d0\n\t"
355 "movew %/d0,%/a0@\n\t"
356 "movew %/a1@+,%/d0\n\t"
357 "rolw #8,%/d0\n\t"
358 "movew %/d0,%/a0@\n\t"
359 "movew %/a1@+,%/d0\n\t"
360 "rolw #8,%/d0\n\t"
361 "movew %/d0,%/a0@\n\t"
362 "movew %/a1@+,%/d0\n\t"
363 "rolw #8,%/d0\n\t"
364 "movew %/d0,%/a0@\n\t"
365 "movew %/a1@+,%/d0\n\t"
366 "rolw #8,%/d0\n\t"
367 "movew %/d0,%/a0@\n\t"
368 "movew %/a1@+,%/d0\n\t"
369 "rolw #8,%/d0\n\t"
370 "movew %/d0,%/a0@\n\t"
371 "movew %/a1@+,%/d0\n\t"
372 "rolw #8,%/d0\n\t"
373 "movew %/d0,%/a0@\n\t"
374 "movew %/a1@+,%/d0\n\t"
375 "rolw #8,%/d0\n\t"
376 "movew %/d0,%/a0@\n\t"
377 "dbra %/d6,1b"
378 :
379 : "g" (port), "g" (buf), "g" (nr)
380 : "d0", "a0", "a1", "d6");
381 }
382
383
384 #if defined(CONFIG_ATARI_ROM_ISA)
raw_rom_insb(volatile u8 __iomem * port,u8 * buf,unsigned int len)385 static inline void raw_rom_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len)
386 {
387 unsigned int i;
388
389 for (i = 0; i < len; i++)
390 *buf++ = rom_in_8(port);
391 }
392
raw_rom_outsb(volatile u8 __iomem * port,const u8 * buf,unsigned int len)393 static inline void raw_rom_outsb(volatile u8 __iomem *port, const u8 *buf,
394 unsigned int len)
395 {
396 unsigned int i;
397
398 for (i = 0; i < len; i++)
399 rom_out_8(port, *buf++);
400 }
401
raw_rom_insw(volatile u16 __iomem * port,u16 * buf,unsigned int nr)402 static inline void raw_rom_insw(volatile u16 __iomem *port, u16 *buf,
403 unsigned int nr)
404 {
405 unsigned int i;
406
407 for (i = 0; i < nr; i++)
408 *buf++ = rom_in_be16(port);
409 }
410
raw_rom_outsw(volatile u16 __iomem * port,const u16 * buf,unsigned int nr)411 static inline void raw_rom_outsw(volatile u16 __iomem *port, const u16 *buf,
412 unsigned int nr)
413 {
414 unsigned int i;
415
416 for (i = 0; i < nr; i++)
417 rom_out_be16(port, *buf++);
418 }
419
raw_rom_insw_swapw(volatile u16 __iomem * port,u16 * buf,unsigned int nr)420 static inline void raw_rom_insw_swapw(volatile u16 __iomem *port, u16 *buf,
421 unsigned int nr)
422 {
423 unsigned int i;
424
425 for (i = 0; i < nr; i++)
426 *buf++ = rom_in_le16(port);
427 }
428
raw_rom_outsw_swapw(volatile u16 __iomem * port,const u16 * buf,unsigned int nr)429 static inline void raw_rom_outsw_swapw(volatile u16 __iomem *port, const u16 *buf,
430 unsigned int nr)
431 {
432 unsigned int i;
433
434 for (i = 0; i < nr; i++)
435 rom_out_le16(port, *buf++);
436 }
437 #endif /* CONFIG_ATARI_ROM_ISA */
438
439 #endif /* __KERNEL__ */
440
441 #endif /* _RAW_IO_H */
442
