io.h 10.4 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
/*
 * linux/include/asm-m68k/io.h
 *
 * 4/1/00 RZ: - rewritten to avoid clashes between ISA/PCI and other
 *              IO access
 *            - added Q40 support
 *            - added skeleton for GG-II and Amiga PCMCIA
 * 2/3/01 RZ: - moved a few more defs into raw_io.h
 *
 * inX/outX/readX/writeX should not be used by any driver unless it does
 * ISA or PCI access. Other drivers should use function defined in raw_io.h
 * or define its own macros on top of these.
 *
 *    inX(),outX()              are for PCI and ISA I/O
 *    readX(),writeX()          are for PCI memory
 *    isa_readX(),isa_writeX()  are for ISA memory
 *
 * moved mem{cpy,set}_*io inside CONFIG_PCI
 */

#ifndef _IO_H
#define _IO_H

#ifdef __KERNEL__

#include <linux/config.h>
27
#include <linux/compiler.h>
Linus Torvalds's avatar
Linus Torvalds committed
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
#include <asm/raw_io.h>
#include <asm/virtconvert.h>


#ifdef CONFIG_ATARI
#include <asm/atarihw.h>
#endif


/*
 * IO/MEM definitions for various ISA bridges
 */


#ifdef CONFIG_Q40

#define q40_isa_io_base  0xff400000
#define q40_isa_mem_base 0xff800000

#define Q40_ISA_IO_B(ioaddr) (q40_isa_io_base+1+4*((unsigned long)(ioaddr)))
#define Q40_ISA_IO_W(ioaddr) (q40_isa_io_base+  4*((unsigned long)(ioaddr)))
#define Q40_ISA_MEM_B(madr)  (q40_isa_mem_base+1+4*((unsigned long)(madr)))
#define Q40_ISA_MEM_W(madr)  (q40_isa_mem_base+  4*((unsigned long)(madr)))

#define MULTI_ISA 0
#endif /* Q40 */

/* GG-II Zorro to ISA bridge */
#ifdef CONFIG_GG2

extern unsigned long gg2_isa_base;
#define GG2_ISA_IO_B(ioaddr) (gg2_isa_base+1+((unsigned long)(ioaddr)*4))
#define GG2_ISA_IO_W(ioaddr) (gg2_isa_base+  ((unsigned long)(ioaddr)*4))
#define GG2_ISA_MEM_B(madr)  (gg2_isa_base+1+(((unsigned long)(madr)*4) & 0xfffff))
#define GG2_ISA_MEM_W(madr)  (gg2_isa_base+  (((unsigned long)(madr)*4) & 0xfffff))

#ifndef MULTI_ISA
#define MULTI_ISA 0
#else
#undef MULTI_ISA
#define MULTI_ISA 1
#endif
#endif /* GG2 */

#ifdef CONFIG_AMIGA_PCMCIA
#include <asm/amigayle.h>

#define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
#define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )

#ifndef MULTI_ISA
#define MULTI_ISA 0
#else
#undef MULTI_ISA
#define MULTI_ISA 1
#endif
#endif /* AMIGA_PCMCIA */



#ifdef CONFIG_ISA

#if MULTI_ISA == 0
#undef MULTI_ISA
#endif

#define Q40_ISA (1)
#define GG2_ISA (2)
#define AG_ISA  (3)

#if defined(CONFIG_Q40) && !defined(MULTI_ISA)
#define ISA_TYPE Q40_ISA
#define ISA_SEX  0
#endif
#if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
#define ISA_TYPE AG_ISA
#define ISA_SEX  1
#endif
#if defined(CONFIG_GG2) && !defined(MULTI_ISA)
#define ISA_TYPE GG2_ISA
#define ISA_SEX  0
#endif

#ifdef MULTI_ISA
extern int isa_type;
extern int isa_sex;

#define ISA_TYPE isa_type
#define ISA_SEX  isa_sex
#endif

/*
 * define inline addr translation functions. Normally only one variant will
 * be compiled in so the case statement will be optimised away
 */

124
static inline u8 __iomem *isa_itb(unsigned long addr)
Linus Torvalds's avatar
Linus Torvalds committed
125
126
127
128
{
  switch(ISA_TYPE)
    {
#ifdef CONFIG_Q40
129
    case Q40_ISA: return (u8 __iomem *)Q40_ISA_IO_B(addr);
Linus Torvalds's avatar
Linus Torvalds committed
130
131
#endif
#ifdef CONFIG_GG2
132
    case GG2_ISA: return (u8 __iomem *)GG2_ISA_IO_B(addr);
Linus Torvalds's avatar
Linus Torvalds committed
133
134
#endif
#ifdef CONFIG_AMIGA_PCMCIA
135
    case AG_ISA: return (u8 __iomem *)AG_ISA_IO_B(addr);
Linus Torvalds's avatar
Linus Torvalds committed
136
#endif
137
    default: return NULL; /* avoid warnings, just in case */
Linus Torvalds's avatar
Linus Torvalds committed
138
139
    }
}
140
static inline u16 __iomem *isa_itw(unsigned long addr)
Linus Torvalds's avatar
Linus Torvalds committed
141
142
143
144
{
  switch(ISA_TYPE)
    {
#ifdef CONFIG_Q40
145
    case Q40_ISA: return (u16 __iomem *)Q40_ISA_IO_W(addr);
Linus Torvalds's avatar
Linus Torvalds committed
146
147
#endif
#ifdef CONFIG_GG2
148
    case GG2_ISA: return (u16 __iomem *)GG2_ISA_IO_W(addr);
Linus Torvalds's avatar
Linus Torvalds committed
149
150
#endif
#ifdef CONFIG_AMIGA_PCMCIA
151
    case AG_ISA: return (u16 __iomem *)AG_ISA_IO_W(addr);
Linus Torvalds's avatar
Linus Torvalds committed
152
#endif
153
    default: return NULL; /* avoid warnings, just in case */
Linus Torvalds's avatar
Linus Torvalds committed
154
155
    }
}
156
static inline u8 __iomem *isa_mtb(unsigned long addr)
Linus Torvalds's avatar
Linus Torvalds committed
157
158
159
160
{
  switch(ISA_TYPE)
    {
#ifdef CONFIG_Q40
161
    case Q40_ISA: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
Linus Torvalds's avatar
Linus Torvalds committed
162
163
#endif
#ifdef CONFIG_GG2
164
    case GG2_ISA: return (u8 __iomem *)GG2_ISA_MEM_B(addr);
Linus Torvalds's avatar
Linus Torvalds committed
165
166
#endif
#ifdef CONFIG_AMIGA_PCMCIA
167
    case AG_ISA: return (u8 __iomem *)addr;
Linus Torvalds's avatar
Linus Torvalds committed
168
#endif
169
    default: return NULL; /* avoid warnings, just in case */
Linus Torvalds's avatar
Linus Torvalds committed
170
171
    }
}
172
static inline u16 __iomem *isa_mtw(unsigned long addr)
Linus Torvalds's avatar
Linus Torvalds committed
173
174
175
176
{
  switch(ISA_TYPE)
    {
#ifdef CONFIG_Q40
177
    case Q40_ISA: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
Linus Torvalds's avatar
Linus Torvalds committed
178
179
#endif
#ifdef CONFIG_GG2
180
    case GG2_ISA: return (u16 __iomem *)GG2_ISA_MEM_W(addr);
Linus Torvalds's avatar
Linus Torvalds committed
181
182
#endif
#ifdef CONFIG_AMIGA_PCMCIA
183
    case AG_ISA: return (u16 __iomem *)addr;
Linus Torvalds's avatar
Linus Torvalds committed
184
#endif
185
    default: return NULL; /* avoid warnings, just in case */
Linus Torvalds's avatar
Linus Torvalds committed
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
    }
}


#define isa_inb(port)      in_8(isa_itb(port))
#define isa_inw(port)      (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
#define isa_outb(val,port) out_8(isa_itb(port),(val))
#define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))

#define isa_readb(p)       in_8(isa_mtb((unsigned long)(p)))
#define isa_readw(p)       \
	(ISA_SEX ? in_be16(isa_mtw((unsigned long)(p)))	\
		 : in_le16(isa_mtw((unsigned long)(p))))
#define isa_writeb(val,p)  out_8(isa_mtb((unsigned long)(p)),(val))
#define isa_writew(val,p)  \
	(ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val))	\
		 : out_le16(isa_mtw((unsigned long)(p)),(val)))

static inline void isa_delay(void)
{
  switch(ISA_TYPE)
    {
#ifdef CONFIG_Q40
    case Q40_ISA: isa_outb(0,0x80); break;
#endif
#ifdef CONFIG_GG2
    case GG2_ISA: break;
#endif
#ifdef CONFIG_AMIGA_PCMCIA
    case AG_ISA: break;
#endif
    default: break; /* avoid warnings */
    }
}

#define isa_inb_p(p)      ({u8 v=isa_inb(p);isa_delay();v;})
#define isa_outb_p(v,p)   ({isa_outb((v),(p));isa_delay();})
#define isa_inw_p(p)      ({u16 v=isa_inw(p);isa_delay();v;})
#define isa_outw_p(v,p)   ({isa_outw((v),(p));isa_delay();})
#define isa_inl_p(p)      ({u32 v=isa_inl(p);isa_delay();v;})
#define isa_outl_p(v,p)   ({isa_outl((v),(p));isa_delay();})

#define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr))
#define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr))

#define isa_insw(port, buf, nr)     \
       (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) :    \
                  raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))

#define isa_outsw(port, buf, nr)    \
       (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) :  \
                  raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
#endif  /* CONFIG_ISA */


#if defined(CONFIG_ISA) && !defined(CONFIG_PCI)
#define inb     isa_inb
#define inb_p   isa_inb_p
#define outb    isa_outb
#define outb_p  isa_outb_p
#define inw     isa_inw
#define inw_p   isa_inw_p
#define outw    isa_outw
#define outw_p  isa_outw_p
#define inl     isa_inw
#define inl_p   isa_inw_p
#define outl    isa_outw
#define outl_p  isa_outw_p
#define insb    isa_insb
#define insw    isa_insw
#define outsb   isa_outsb
#define outsw   isa_outsw
#define readb   isa_readb
#define readw   isa_readw
#define writeb  isa_writeb
#define writew  isa_writew
#endif /* CONFIG_ISA */

#if defined(CONFIG_PCI)

#define inl(port)        in_le32(port)
#define outl(val,port)   out_le32((port),(val))
#define readl(addr)      in_le32(addr)
#define writel(val,addr) out_le32((addr),(val))

/* those can be defined for both ISA and PCI - it won't work though */
#define readb(addr)       in_8(addr)
#define readw(addr)       in_le16(addr)
#define writeb(val,addr)  out_8((addr),(val))
#define writew(val,addr)  out_le16((addr),(val))

#define readb_relaxed(addr) readb(addr)
#define readw_relaxed(addr) readw(addr)
#define readl_relaxed(addr) readl(addr)

#ifndef CONFIG_ISA
#define inb(port)      in_8(port)
#define outb(val,port) out_8((port),(val))
#define inw(port)      in_le16(port)
#define outw(val,port) out_le16((port),(val))

#else
/*
 * kernel with both ISA and PCI compiled in, those have
 * conflicting defs for in/out. Simply consider port < 1024
 * ISA and everything else PCI. read,write not defined
 * in this case
 */
#define inb(port) ((port)<1024 ? isa_inb(port) : in_8(port))
#define inb_p(port) ((port)<1024 ? isa_inb_p(port) : in_8(port))
#define inw(port) ((port)<1024 ? isa_inw(port) : in_le16(port))
#define inw_p(port) ((port)<1024 ? isa_inw_p(port) : in_le16(port))
#define inl(port) ((port)<1024 ? isa_inl(port) : in_le32(port))
#define inl_p(port) ((port)<1024 ? isa_inl_p(port) : in_le32(port))

#define outb(val,port) ((port)<1024 ? isa_outb((val),(port)) : out_8((port),(val)))
#define outb_p(val,port) ((port)<1024 ? isa_outb_p((val),(port)) : out_8((port),(val)))
#define outw(val,port) ((port)<1024 ? isa_outw((val),(port)) : out_le16((port),(val)))
#define outw_p(val,port) ((port)<1024 ? isa_outw_p((val),(port)) : out_le16((port),(val)))
#define outl(val,port) ((port)<1024 ? isa_outl((val),(port)) : out_le32((port),(val)))
#define outl_p(val,port) ((port)<1024 ? isa_outl_p((val),(port)) : out_le32((port),(val)))
#endif
#endif /* CONFIG_PCI */

#if !defined(CONFIG_ISA) && !defined(CONFIG_PCI) && defined(CONFIG_HP300)
/*
 * We need to define dummy functions otherwise drivers/serial/8250.c doesn't link
 */
#define inb(port)        0xff
#define inb_p(port)      0xff
#define outb(val,port)   do { } while (0)
#define outb_p(val,port) do { } while (0)

/*
 * These should be valid on any ioremap()ed region
 */
#define readb(addr)      in_8(addr)
#define writeb(val,addr) out_8((addr),(val))
#define readl(addr)      in_le32(addr)
#define writel(val,addr) out_le32((addr),(val))
#endif

#define mmiowb()

330
static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
Linus Torvalds's avatar
Linus Torvalds committed
331
332
333
{
	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
334
static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
Linus Torvalds's avatar
Linus Torvalds committed
335
336
337
{
	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
338
static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
Linus Torvalds's avatar
Linus Torvalds committed
339
340
341
342
					 unsigned long size)
{
	return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
}
343
static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
Linus Torvalds's avatar
Linus Torvalds committed
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
				      unsigned long size)
{
	return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
}


/* m68k caches aren't DMA coherent */
extern void dma_cache_wback_inv(unsigned long start, unsigned long size);
extern void dma_cache_wback(unsigned long start, unsigned long size);
extern void dma_cache_inv(unsigned long start, unsigned long size);


#ifndef CONFIG_SUN3
#define IO_SPACE_LIMIT 0xffff
#else
#define IO_SPACE_LIMIT 0x0fffffff
#endif

#endif /* __KERNEL__ */

#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED		1

/*
 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
 * access
 */
#define xlate_dev_mem_ptr(p)	__va(p)

/*
 * Convert a virtual cached pointer to an uncached pointer
 */
#define xlate_dev_kmem_ptr(p)	p

#endif /* _IO_H */