blob: baf4f9b8acfc327de5da8c759c310c7b43509e66 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/asm-m68k/io.h
3 *
4 * 4/1/00 RZ: - rewritten to avoid clashes between ISA/PCI and other
5 * IO access
6 * - added Q40 support
7 * - added skeleton for GG-II and Amiga PCMCIA
8 * 2/3/01 RZ: - moved a few more defs into raw_io.h
9 *
10 * inX/outX/readX/writeX should not be used by any driver unless it does
11 * ISA or PCI access. Other drivers should use function defined in raw_io.h
12 * or define its own macros on top of these.
13 *
14 * inX(),outX() are for PCI and ISA I/O
15 * readX(),writeX() are for PCI memory
16 * isa_readX(),isa_writeX() are for ISA memory
17 *
18 * moved mem{cpy,set}_*io inside CONFIG_PCI
19 */
20
21#ifndef _IO_H
22#define _IO_H
23
24#ifdef __KERNEL__
25
Al Viroad9ec4f2006-01-12 01:06:24 -080026#include <linux/compiler.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <asm/raw_io.h>
28#include <asm/virtconvert.h>
29
Al Virof9569e12007-07-20 04:32:58 +010030#include <asm-generic/iomap.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32#ifdef CONFIG_ATARI
33#include <asm/atarihw.h>
34#endif
35
36
37/*
38 * IO/MEM definitions for various ISA bridges
39 */
40
41
42#ifdef CONFIG_Q40
43
44#define q40_isa_io_base 0xff400000
45#define q40_isa_mem_base 0xff800000
46
47#define Q40_ISA_IO_B(ioaddr) (q40_isa_io_base+1+4*((unsigned long)(ioaddr)))
48#define Q40_ISA_IO_W(ioaddr) (q40_isa_io_base+ 4*((unsigned long)(ioaddr)))
49#define Q40_ISA_MEM_B(madr) (q40_isa_mem_base+1+4*((unsigned long)(madr)))
50#define Q40_ISA_MEM_W(madr) (q40_isa_mem_base+ 4*((unsigned long)(madr)))
51
52#define MULTI_ISA 0
53#endif /* Q40 */
54
55/* GG-II Zorro to ISA bridge */
56#ifdef CONFIG_GG2
57
58extern unsigned long gg2_isa_base;
59#define GG2_ISA_IO_B(ioaddr) (gg2_isa_base+1+((unsigned long)(ioaddr)*4))
60#define GG2_ISA_IO_W(ioaddr) (gg2_isa_base+ ((unsigned long)(ioaddr)*4))
61#define GG2_ISA_MEM_B(madr) (gg2_isa_base+1+(((unsigned long)(madr)*4) & 0xfffff))
62#define GG2_ISA_MEM_W(madr) (gg2_isa_base+ (((unsigned long)(madr)*4) & 0xfffff))
63
64#ifndef MULTI_ISA
65#define MULTI_ISA 0
66#else
67#undef MULTI_ISA
68#define MULTI_ISA 1
69#endif
70#endif /* GG2 */
71
72#ifdef CONFIG_AMIGA_PCMCIA
73#include <asm/amigayle.h>
74
75#define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
76#define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )
77
78#ifndef MULTI_ISA
79#define MULTI_ISA 0
80#else
81#undef MULTI_ISA
82#define MULTI_ISA 1
83#endif
84#endif /* AMIGA_PCMCIA */
85
86
87
88#ifdef CONFIG_ISA
89
90#if MULTI_ISA == 0
91#undef MULTI_ISA
92#endif
93
94#define Q40_ISA (1)
95#define GG2_ISA (2)
96#define AG_ISA (3)
97
98#if defined(CONFIG_Q40) && !defined(MULTI_ISA)
99#define ISA_TYPE Q40_ISA
100#define ISA_SEX 0
101#endif
102#if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
103#define ISA_TYPE AG_ISA
104#define ISA_SEX 1
105#endif
106#if defined(CONFIG_GG2) && !defined(MULTI_ISA)
107#define ISA_TYPE GG2_ISA
108#define ISA_SEX 0
109#endif
110
111#ifdef MULTI_ISA
112extern int isa_type;
113extern int isa_sex;
114
115#define ISA_TYPE isa_type
116#define ISA_SEX isa_sex
117#endif
118
119/*
120 * define inline addr translation functions. Normally only one variant will
121 * be compiled in so the case statement will be optimised away
122 */
123
Al Viroad9ec4f2006-01-12 01:06:24 -0800124static inline u8 __iomem *isa_itb(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125{
126 switch(ISA_TYPE)
127 {
128#ifdef CONFIG_Q40
Al Viroad9ec4f2006-01-12 01:06:24 -0800129 case Q40_ISA: return (u8 __iomem *)Q40_ISA_IO_B(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130#endif
131#ifdef CONFIG_GG2
Al Viroad9ec4f2006-01-12 01:06:24 -0800132 case GG2_ISA: return (u8 __iomem *)GG2_ISA_IO_B(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133#endif
134#ifdef CONFIG_AMIGA_PCMCIA
Al Viroad9ec4f2006-01-12 01:06:24 -0800135 case AG_ISA: return (u8 __iomem *)AG_ISA_IO_B(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136#endif
Al Viroad9ec4f2006-01-12 01:06:24 -0800137 default: return NULL; /* avoid warnings, just in case */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 }
139}
Al Viroad9ec4f2006-01-12 01:06:24 -0800140static inline u16 __iomem *isa_itw(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141{
142 switch(ISA_TYPE)
143 {
144#ifdef CONFIG_Q40
Al Viroad9ec4f2006-01-12 01:06:24 -0800145 case Q40_ISA: return (u16 __iomem *)Q40_ISA_IO_W(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146#endif
147#ifdef CONFIG_GG2
Al Viroad9ec4f2006-01-12 01:06:24 -0800148 case GG2_ISA: return (u16 __iomem *)GG2_ISA_IO_W(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149#endif
150#ifdef CONFIG_AMIGA_PCMCIA
Al Viroad9ec4f2006-01-12 01:06:24 -0800151 case AG_ISA: return (u16 __iomem *)AG_ISA_IO_W(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152#endif
Al Viroad9ec4f2006-01-12 01:06:24 -0800153 default: return NULL; /* avoid warnings, just in case */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 }
155}
Al Virof9569e12007-07-20 04:32:58 +0100156static inline u32 __iomem *isa_itl(unsigned long addr)
157{
158 switch(ISA_TYPE)
159 {
160#ifdef CONFIG_AMIGA_PCMCIA
161 case AG_ISA: return (u32 __iomem *)AG_ISA_IO_W(addr);
162#endif
163 default: return 0; /* avoid warnings, just in case */
164 }
165}
Al Viroad9ec4f2006-01-12 01:06:24 -0800166static inline u8 __iomem *isa_mtb(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167{
168 switch(ISA_TYPE)
169 {
170#ifdef CONFIG_Q40
Al Viroad9ec4f2006-01-12 01:06:24 -0800171 case Q40_ISA: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172#endif
173#ifdef CONFIG_GG2
Al Viroad9ec4f2006-01-12 01:06:24 -0800174 case GG2_ISA: return (u8 __iomem *)GG2_ISA_MEM_B(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175#endif
176#ifdef CONFIG_AMIGA_PCMCIA
Al Viroad9ec4f2006-01-12 01:06:24 -0800177 case AG_ISA: return (u8 __iomem *)addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178#endif
Al Viroad9ec4f2006-01-12 01:06:24 -0800179 default: return NULL; /* avoid warnings, just in case */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 }
181}
Al Viroad9ec4f2006-01-12 01:06:24 -0800182static inline u16 __iomem *isa_mtw(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183{
184 switch(ISA_TYPE)
185 {
186#ifdef CONFIG_Q40
Al Viroad9ec4f2006-01-12 01:06:24 -0800187 case Q40_ISA: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188#endif
189#ifdef CONFIG_GG2
Al Viroad9ec4f2006-01-12 01:06:24 -0800190 case GG2_ISA: return (u16 __iomem *)GG2_ISA_MEM_W(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191#endif
192#ifdef CONFIG_AMIGA_PCMCIA
Al Viroad9ec4f2006-01-12 01:06:24 -0800193 case AG_ISA: return (u16 __iomem *)addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194#endif
Al Viroad9ec4f2006-01-12 01:06:24 -0800195 default: return NULL; /* avoid warnings, just in case */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 }
197}
198
199
200#define isa_inb(port) in_8(isa_itb(port))
201#define isa_inw(port) (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
Al Virof9569e12007-07-20 04:32:58 +0100202#define isa_inl(port) (ISA_SEX ? in_be32(isa_itl(port)) : in_le32(isa_itl(port)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203#define isa_outb(val,port) out_8(isa_itb(port),(val))
204#define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))
Al Virof9569e12007-07-20 04:32:58 +0100205#define isa_outl(val,port) (ISA_SEX ? out_be32(isa_itl(port),(val)) : out_le32(isa_itl(port),(val)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
207#define isa_readb(p) in_8(isa_mtb((unsigned long)(p)))
208#define isa_readw(p) \
209 (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \
210 : in_le16(isa_mtw((unsigned long)(p))))
211#define isa_writeb(val,p) out_8(isa_mtb((unsigned long)(p)),(val))
212#define isa_writew(val,p) \
213 (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \
214 : out_le16(isa_mtw((unsigned long)(p)),(val)))
215
216static inline void isa_delay(void)
217{
218 switch(ISA_TYPE)
219 {
220#ifdef CONFIG_Q40
221 case Q40_ISA: isa_outb(0,0x80); break;
222#endif
223#ifdef CONFIG_GG2
224 case GG2_ISA: break;
225#endif
226#ifdef CONFIG_AMIGA_PCMCIA
227 case AG_ISA: break;
228#endif
229 default: break; /* avoid warnings */
230 }
231}
232
233#define isa_inb_p(p) ({u8 v=isa_inb(p);isa_delay();v;})
234#define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();})
235#define isa_inw_p(p) ({u16 v=isa_inw(p);isa_delay();v;})
236#define isa_outw_p(v,p) ({isa_outw((v),(p));isa_delay();})
237#define isa_inl_p(p) ({u32 v=isa_inl(p);isa_delay();v;})
238#define isa_outl_p(v,p) ({isa_outl((v),(p));isa_delay();})
239
240#define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr))
241#define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr))
242
243#define isa_insw(port, buf, nr) \
244 (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
245 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
246
247#define isa_outsw(port, buf, nr) \
248 (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
249 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
Al Virof9569e12007-07-20 04:32:58 +0100250
251#define isa_insl(port, buf, nr) \
252 (ISA_SEX ? raw_insl(isa_itl(port), (u32 *)(buf), (nr)) : \
253 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
254
255#define isa_outsl(port, buf, nr) \
256 (ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) : \
257 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
258
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259#endif /* CONFIG_ISA */
260
261
262#if defined(CONFIG_ISA) && !defined(CONFIG_PCI)
263#define inb isa_inb
264#define inb_p isa_inb_p
265#define outb isa_outb
266#define outb_p isa_outb_p
267#define inw isa_inw
268#define inw_p isa_inw_p
269#define outw isa_outw
270#define outw_p isa_outw_p
Al Virof9569e12007-07-20 04:32:58 +0100271#define inl isa_inl
272#define inl_p isa_inl_p
273#define outl isa_outl
274#define outl_p isa_outl_p
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275#define insb isa_insb
276#define insw isa_insw
Al Virof9569e12007-07-20 04:32:58 +0100277#define insl isa_insl
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278#define outsb isa_outsb
279#define outsw isa_outsw
Al Virof9569e12007-07-20 04:32:58 +0100280#define outsl isa_outsl
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281#define readb isa_readb
282#define readw isa_readw
283#define writeb isa_writeb
284#define writew isa_writew
285#endif /* CONFIG_ISA */
286
287#if defined(CONFIG_PCI)
288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289#define readl(addr) in_le32(addr)
290#define writel(val,addr) out_le32((addr),(val))
291
292/* those can be defined for both ISA and PCI - it won't work though */
293#define readb(addr) in_8(addr)
294#define readw(addr) in_le16(addr)
295#define writeb(val,addr) out_8((addr),(val))
296#define writew(val,addr) out_le16((addr),(val))
297
298#define readb_relaxed(addr) readb(addr)
299#define readw_relaxed(addr) readw(addr)
300#define readl_relaxed(addr) readl(addr)
301
302#ifndef CONFIG_ISA
303#define inb(port) in_8(port)
304#define outb(val,port) out_8((port),(val))
305#define inw(port) in_le16(port)
306#define outw(val,port) out_le16((port),(val))
Al Virof9569e12007-07-20 04:32:58 +0100307#define inl(port) in_le32(port)
308#define outl(val,port) out_le32((port),(val))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
310#else
311/*
312 * kernel with both ISA and PCI compiled in, those have
313 * conflicting defs for in/out. Simply consider port < 1024
314 * ISA and everything else PCI. read,write not defined
315 * in this case
316 */
317#define inb(port) ((port)<1024 ? isa_inb(port) : in_8(port))
318#define inb_p(port) ((port)<1024 ? isa_inb_p(port) : in_8(port))
319#define inw(port) ((port)<1024 ? isa_inw(port) : in_le16(port))
320#define inw_p(port) ((port)<1024 ? isa_inw_p(port) : in_le16(port))
321#define inl(port) ((port)<1024 ? isa_inl(port) : in_le32(port))
322#define inl_p(port) ((port)<1024 ? isa_inl_p(port) : in_le32(port))
323
324#define outb(val,port) ((port)<1024 ? isa_outb((val),(port)) : out_8((port),(val)))
325#define outb_p(val,port) ((port)<1024 ? isa_outb_p((val),(port)) : out_8((port),(val)))
326#define outw(val,port) ((port)<1024 ? isa_outw((val),(port)) : out_le16((port),(val)))
327#define outw_p(val,port) ((port)<1024 ? isa_outw_p((val),(port)) : out_le16((port),(val)))
328#define outl(val,port) ((port)<1024 ? isa_outl((val),(port)) : out_le32((port),(val)))
329#define outl_p(val,port) ((port)<1024 ? isa_outl_p((val),(port)) : out_le32((port),(val)))
330#endif
331#endif /* CONFIG_PCI */
332
Al Virof9569e12007-07-20 04:32:58 +0100333#if !defined(CONFIG_ISA) && !defined(CONFIG_PCI)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334/*
Al Virof9569e12007-07-20 04:32:58 +0100335 * We need to define dummy functions for GENERIC_IOMAP support.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 */
Al Virof9569e12007-07-20 04:32:58 +0100337#define inb(port) 0xff
338#define inb_p(port) 0xff
339#define outb(val,port) ((void)0)
340#define outb_p(val,port) ((void)0)
341#define inw(port) 0xffff
342#define outw(val,port) ((void)0)
343#define inl(port) 0xffffffffUL
344#define outl(val,port) ((void)0)
345
346#define insb(port,buf,nr) ((void)0)
347#define outsb(port,buf,nr) ((void)0)
348#define insw(port,buf,nr) ((void)0)
349#define outsw(port,buf,nr) ((void)0)
350#define insl(port,buf,nr) ((void)0)
351#define outsl(port,buf,nr) ((void)0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
353/*
354 * These should be valid on any ioremap()ed region
355 */
356#define readb(addr) in_8(addr)
357#define writeb(val,addr) out_8((addr),(val))
Al Virof9569e12007-07-20 04:32:58 +0100358#define readw(addr) in_le16(addr)
359#define writew(val,addr) out_le16((addr),(val))
360#endif
361#if !defined(CONFIG_PCI)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362#define readl(addr) in_le32(addr)
363#define writel(val,addr) out_le32((addr),(val))
364#endif
365
366#define mmiowb()
367
Al Viroad9ec4f2006-01-12 01:06:24 -0800368static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369{
370 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
371}
Al Viroad9ec4f2006-01-12 01:06:24 -0800372static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
374 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
375}
Al Viroad9ec4f2006-01-12 01:06:24 -0800376static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 unsigned long size)
378{
379 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
380}
Al Viroad9ec4f2006-01-12 01:06:24 -0800381static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 unsigned long size)
383{
384 return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
385}
386
Al Virof9569e12007-07-20 04:32:58 +0100387static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
388{
389 __builtin_memset((void __force *) addr, val, count);
390}
391static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
392{
393 __builtin_memcpy(dst, (void __force *) src, count);
394}
395static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
396{
397 __builtin_memcpy((void __force *) dst, src, count);
398}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
400#ifndef CONFIG_SUN3
401#define IO_SPACE_LIMIT 0xffff
402#else
403#define IO_SPACE_LIMIT 0x0fffffff
404#endif
405
406#endif /* __KERNEL__ */
407
408#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
409
410/*
411 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
412 * access
413 */
414#define xlate_dev_mem_ptr(p) __va(p)
415
416/*
417 * Convert a virtual cached pointer to an uncached pointer
418 */
419#define xlate_dev_kmem_ptr(p) p
420
421#endif /* _IO_H */