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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * linux/include/asm-m68k/io.h
4 *
5 * 4/1/00 RZ: - rewritten to avoid clashes between ISA/PCI and other
6 * IO access
7 * - added Q40 support
8 * - added skeleton for GG-II and Amiga PCMCIA
9 * 2/3/01 RZ: - moved a few more defs into raw_io.h
10 *
11 * inX/outX should not be used by any driver unless it does
12 * ISA access. Other drivers should use function defined in raw_io.h
13 * or define its own macros on top of these.
14 *
15 * inX(),outX() are for ISA I/O
16 * isa_readX(),isa_writeX() are for ISA memory
17 */
18
19#ifndef _M68K_IO_MM_H
20#define _M68K_IO_MM_H
21
22#ifdef __KERNEL__
23
24#include <linux/compiler.h>
25#include <asm/raw_io.h>
26#include <asm/virtconvert.h>
27#include <asm/kmap.h>
28
29#ifdef CONFIG_ATARI
30#define atari_readb raw_inb
31#define atari_writeb raw_outb
32
33#define atari_inb_p raw_inb
34#define atari_outb_p raw_outb
35#endif
36
37
38/*
39 * IO/MEM definitions for various ISA bridges
40 */
41
42
43#ifdef CONFIG_Q40
44
45#define q40_isa_io_base 0xff400000
46#define q40_isa_mem_base 0xff800000
47
48#define Q40_ISA_IO_B(ioaddr) (q40_isa_io_base+1+4*((unsigned long)(ioaddr)))
49#define Q40_ISA_IO_W(ioaddr) (q40_isa_io_base+ 4*((unsigned long)(ioaddr)))
50#define Q40_ISA_MEM_B(madr) (q40_isa_mem_base+1+4*((unsigned long)(madr)))
51#define Q40_ISA_MEM_W(madr) (q40_isa_mem_base+ 4*((unsigned long)(madr)))
52
53#define MULTI_ISA 0
54#endif /* Q40 */
55
56#ifdef CONFIG_AMIGA_PCMCIA
57#include <asm/amigayle.h>
58
59#define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
60#define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )
61
62#ifndef MULTI_ISA
63#define MULTI_ISA 0
64#else
65#undef MULTI_ISA
66#define MULTI_ISA 1
67#endif
68#endif /* AMIGA_PCMCIA */
69
70#ifdef CONFIG_ATARI_ROM_ISA
71
72#define enec_isa_read_base 0xfffa0000
73#define enec_isa_write_base 0xfffb0000
74
75#define ENEC_ISA_IO_B(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
76#define ENEC_ISA_IO_W(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
77#define ENEC_ISA_MEM_B(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
78#define ENEC_ISA_MEM_W(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
79
80#ifndef MULTI_ISA
81#define MULTI_ISA 0
82#else
83#undef MULTI_ISA
84#define MULTI_ISA 1
85#endif
86#endif /* ATARI_ROM_ISA */
87
88
89#if defined(CONFIG_ISA) || defined(CONFIG_ATARI_ROM_ISA)
90
91#if MULTI_ISA == 0
92#undef MULTI_ISA
93#endif
94
95#define ISA_TYPE_Q40 (1)
96#define ISA_TYPE_AG (2)
97#define ISA_TYPE_ENEC (3)
98
99#if defined(CONFIG_Q40) && !defined(MULTI_ISA)
100#define ISA_TYPE ISA_TYPE_Q40
101#define ISA_SEX 0
102#endif
103#if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
104#define ISA_TYPE ISA_TYPE_AG
105#define ISA_SEX 1
106#endif
107#if defined(CONFIG_ATARI_ROM_ISA) && !defined(MULTI_ISA)
108#define ISA_TYPE ISA_TYPE_ENEC
109#define ISA_SEX 0
110#endif
111
112#ifdef MULTI_ISA
113extern int isa_type;
114extern int isa_sex;
115
116#define ISA_TYPE isa_type
117#define ISA_SEX isa_sex
118#endif
119
120/*
121 * define inline addr translation functions. Normally only one variant will
122 * be compiled in so the case statement will be optimised away
123 */
124
125static inline u8 __iomem *isa_itb(unsigned long addr)
126{
127 switch(ISA_TYPE)
128 {
129#ifdef CONFIG_Q40
130 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_IO_B(addr);
131#endif
132#ifdef CONFIG_AMIGA_PCMCIA
133 case ISA_TYPE_AG: return (u8 __iomem *)AG_ISA_IO_B(addr);
134#endif
135#ifdef CONFIG_ATARI_ROM_ISA
136 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_IO_B(addr);
137#endif
138 default: return NULL; /* avoid warnings, just in case */
139 }
140}
141static inline u16 __iomem *isa_itw(unsigned long addr)
142{
143 switch(ISA_TYPE)
144 {
145#ifdef CONFIG_Q40
146 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_IO_W(addr);
147#endif
148#ifdef CONFIG_AMIGA_PCMCIA
149 case ISA_TYPE_AG: return (u16 __iomem *)AG_ISA_IO_W(addr);
150#endif
151#ifdef CONFIG_ATARI_ROM_ISA
152 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_IO_W(addr);
153#endif
154 default: return NULL; /* avoid warnings, just in case */
155 }
156}
157static inline u32 __iomem *isa_itl(unsigned long addr)
158{
159 switch(ISA_TYPE)
160 {
161#ifdef CONFIG_AMIGA_PCMCIA
162 case ISA_TYPE_AG: return (u32 __iomem *)AG_ISA_IO_W(addr);
163#endif
164 default: return 0; /* avoid warnings, just in case */
165 }
166}
167static inline u8 __iomem *isa_mtb(unsigned long addr)
168{
169 switch(ISA_TYPE)
170 {
171#ifdef CONFIG_Q40
172 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
173#endif
174#ifdef CONFIG_AMIGA_PCMCIA
175 case ISA_TYPE_AG: return (u8 __iomem *)addr;
176#endif
177#ifdef CONFIG_ATARI_ROM_ISA
178 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_MEM_B(addr);
179#endif
180 default: return NULL; /* avoid warnings, just in case */
181 }
182}
183static inline u16 __iomem *isa_mtw(unsigned long addr)
184{
185 switch(ISA_TYPE)
186 {
187#ifdef CONFIG_Q40
188 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
189#endif
190#ifdef CONFIG_AMIGA_PCMCIA
191 case ISA_TYPE_AG: return (u16 __iomem *)addr;
192#endif
193#ifdef CONFIG_ATARI_ROM_ISA
194 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_MEM_W(addr);
195#endif
196 default: return NULL; /* avoid warnings, just in case */
197 }
198}
199
200
201#define isa_inb(port) in_8(isa_itb(port))
202#define isa_inw(port) (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
203#define isa_inl(port) (ISA_SEX ? in_be32(isa_itl(port)) : in_le32(isa_itl(port)))
204#define isa_outb(val,port) out_8(isa_itb(port),(val))
205#define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))
206#define isa_outl(val,port) (ISA_SEX ? out_be32(isa_itl(port),(val)) : out_le32(isa_itl(port),(val)))
207
208#define isa_readb(p) in_8(isa_mtb((unsigned long)(p)))
209#define isa_readw(p) \
210 (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \
211 : in_le16(isa_mtw((unsigned long)(p))))
212#define isa_writeb(val,p) out_8(isa_mtb((unsigned long)(p)),(val))
213#define isa_writew(val,p) \
214 (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \
215 : out_le16(isa_mtw((unsigned long)(p)),(val)))
216
217#ifdef CONFIG_ATARI_ROM_ISA
218#define isa_rom_inb(port) rom_in_8(isa_itb(port))
219#define isa_rom_inw(port) \
220 (ISA_SEX ? rom_in_be16(isa_itw(port)) \
221 : rom_in_le16(isa_itw(port)))
222
223#define isa_rom_outb(val, port) rom_out_8(isa_itb(port), (val))
224#define isa_rom_outw(val, port) \
225 (ISA_SEX ? rom_out_be16(isa_itw(port), (val)) \
226 : rom_out_le16(isa_itw(port), (val)))
227
228#define isa_rom_readb(p) rom_in_8(isa_mtb((unsigned long)(p)))
229#define isa_rom_readw(p) \
230 (ISA_SEX ? rom_in_be16(isa_mtw((unsigned long)(p))) \
231 : rom_in_le16(isa_mtw((unsigned long)(p))))
232#define isa_rom_readw_swap(p) \
233 (ISA_SEX ? rom_in_le16(isa_mtw((unsigned long)(p))) \
234 : rom_in_be16(isa_mtw((unsigned long)(p))))
235#define isa_rom_readw_raw(p) rom_in_be16(isa_mtw((unsigned long)(p)))
236
237#define isa_rom_writeb(val, p) rom_out_8(isa_mtb((unsigned long)(p)), (val))
238#define isa_rom_writew(val, p) \
239 (ISA_SEX ? rom_out_be16(isa_mtw((unsigned long)(p)), (val)) \
240 : rom_out_le16(isa_mtw((unsigned long)(p)), (val)))
241#define isa_rom_writew_swap(val, p) \
242 (ISA_SEX ? rom_out_le16(isa_mtw((unsigned long)(p)), (val)) \
243 : rom_out_be16(isa_mtw((unsigned long)(p)), (val)))
244#define isa_rom_writew_raw(val, p) rom_out_be16(isa_mtw((unsigned long)(p)), (val))
245#endif /* CONFIG_ATARI_ROM_ISA */
246
247static inline void isa_delay(void)
248{
249 switch(ISA_TYPE)
250 {
251#ifdef CONFIG_Q40
252 case ISA_TYPE_Q40: isa_outb(0,0x80); break;
253#endif
254#ifdef CONFIG_AMIGA_PCMCIA
255 case ISA_TYPE_AG: break;
256#endif
257#ifdef CONFIG_ATARI_ROM_ISA
258 case ISA_TYPE_ENEC: break;
259#endif
260 default: break; /* avoid warnings */
261 }
262}
263
264#define isa_inb_p(p) ({u8 v=isa_inb(p);isa_delay();v;})
265#define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();})
266#define isa_inw_p(p) ({u16 v=isa_inw(p);isa_delay();v;})
267#define isa_outw_p(v,p) ({isa_outw((v),(p));isa_delay();})
268#define isa_inl_p(p) ({u32 v=isa_inl(p);isa_delay();v;})
269#define isa_outl_p(v,p) ({isa_outl((v),(p));isa_delay();})
270
271#define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr))
272#define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr))
273
274#define isa_insw(port, buf, nr) \
275 (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
276 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
277
278#define isa_outsw(port, buf, nr) \
279 (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
280 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
281
282#define isa_insl(port, buf, nr) \
283 (ISA_SEX ? raw_insl(isa_itl(port), (u32 *)(buf), (nr)) : \
284 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
285
286#define isa_outsl(port, buf, nr) \
287 (ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) : \
288 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
289
290
291#ifdef CONFIG_ATARI_ROM_ISA
292#define isa_rom_inb_p(p) ({ u8 _v = isa_rom_inb(p); isa_delay(); _v; })
293#define isa_rom_inw_p(p) ({ u16 _v = isa_rom_inw(p); isa_delay(); _v; })
294#define isa_rom_outb_p(v, p) ({ isa_rom_outb((v), (p)); isa_delay(); })
295#define isa_rom_outw_p(v, p) ({ isa_rom_outw((v), (p)); isa_delay(); })
296
297#define isa_rom_insb(port, buf, nr) raw_rom_insb(isa_itb(port), (u8 *)(buf), (nr))
298
299#define isa_rom_insw(port, buf, nr) \
300 (ISA_SEX ? raw_rom_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
301 raw_rom_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
302
303#define isa_rom_outsb(port, buf, nr) raw_rom_outsb(isa_itb(port), (u8 *)(buf), (nr))
304
305#define isa_rom_outsw(port, buf, nr) \
306 (ISA_SEX ? raw_rom_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
307 raw_rom_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
308#endif /* CONFIG_ATARI_ROM_ISA */
309
310#endif /* CONFIG_ISA || CONFIG_ATARI_ROM_ISA */
311
312
313#if defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA)
314#define inb isa_inb
315#define inb_p isa_inb_p
316#define outb isa_outb
317#define outb_p isa_outb_p
318#define inw isa_inw
319#define inw_p isa_inw_p
320#define outw isa_outw
321#define outw_p isa_outw_p
322#define inl isa_inl
323#define inl_p isa_inl_p
324#define outl isa_outl
325#define outl_p isa_outl_p
326#define insb isa_insb
327#define insw isa_insw
328#define insl isa_insl
329#define outsb isa_outsb
330#define outsw isa_outsw
331#define outsl isa_outsl
332#define readb isa_readb
333#define readw isa_readw
334#define writeb isa_writeb
335#define writew isa_writew
336#endif /* CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */
337
338#ifdef CONFIG_ATARI_ROM_ISA
339/*
340 * kernel with both ROM port ISA and IDE compiled in, those have
341 * conflicting defs for in/out. Simply consider port < 1024
342 * ROM port ISA and everything else regular ISA for IDE. read,write defined
343 * below.
344 */
345#define inb(port) ((port) < 1024 ? isa_rom_inb(port) : in_8(port))
346#define inb_p(port) ((port) < 1024 ? isa_rom_inb_p(port) : in_8(port))
347#define inw(port) ((port) < 1024 ? isa_rom_inw(port) : in_le16(port))
348#define inw_p(port) ((port) < 1024 ? isa_rom_inw_p(port) : in_le16(port))
349#define inl isa_inl
350#define inl_p isa_inl_p
351
352#define outb(val, port) ((port) < 1024 ? isa_rom_outb((val), (port)) : out_8((port), (val)))
353#define outb_p(val, port) ((port) < 1024 ? isa_rom_outb_p((val), (port)) : out_8((port), (val)))
354#define outw(val, port) ((port) < 1024 ? isa_rom_outw((val), (port)) : out_le16((port), (val)))
355#define outw_p(val, port) ((port) < 1024 ? isa_rom_outw_p((val), (port)) : out_le16((port), (val)))
356#define outl isa_outl
357#define outl_p isa_outl_p
358
359#define insb(port, buf, nr) ((port) < 1024 ? isa_rom_insb((port), (buf), (nr)) : isa_insb((port), (buf), (nr)))
360#define insw(port, buf, nr) ((port) < 1024 ? isa_rom_insw((port), (buf), (nr)) : isa_insw((port), (buf), (nr)))
361#define insl isa_insl
362#define outsb(port, buf, nr) ((port) < 1024 ? isa_rom_outsb((port), (buf), (nr)) : isa_outsb((port), (buf), (nr)))
363#define outsw(port, buf, nr) ((port) < 1024 ? isa_rom_outsw((port), (buf), (nr)) : isa_outsw((port), (buf), (nr)))
364#define outsl isa_outsl
365
366#define readb(addr) in_8(addr)
367#define writeb(val, addr) out_8((addr), (val))
368#define readw(addr) in_le16(addr)
369#define writew(val, addr) out_le16((addr), (val))
370#endif /* CONFIG_ATARI_ROM_ISA */
371
372#define readl(addr) in_le32(addr)
373#define writel(val,addr) out_le32((addr),(val))
374
375#define readsb(port, buf, nr) raw_insb((port), (u8 *)(buf), (nr))
376#define readsw(port, buf, nr) raw_insw((port), (u16 *)(buf), (nr))
377#define readsl(port, buf, nr) raw_insl((port), (u32 *)(buf), (nr))
378#define writesb(port, buf, nr) raw_outsb((port), (u8 *)(buf), (nr))
379#define writesw(port, buf, nr) raw_outsw((port), (u16 *)(buf), (nr))
380#define writesl(port, buf, nr) raw_outsl((port), (u32 *)(buf), (nr))
381
382#ifndef CONFIG_SUN3
383#define IO_SPACE_LIMIT 0xffff
384#else
385#define IO_SPACE_LIMIT 0x0fffffff
386#endif
387
388#endif /* __KERNEL__ */
389
390#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
391
392#define readb_relaxed(addr) readb(addr)
393#define readw_relaxed(addr) readw(addr)
394#define readl_relaxed(addr) readl(addr)
395
396#define writeb_relaxed(b, addr) writeb(b, addr)
397#define writew_relaxed(b, addr) writew(b, addr)
398#define writel_relaxed(b, addr) writel(b, addr)
399
400#endif /* _M68K_IO_MM_H */
401

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source code of linux/arch/m68k/include/asm/io_mm.h