2 * linux/include/asm-m68k/io.h
4 * 4/1/00 RZ: - rewritten to avoid clashes between ISA/PCI and other
7 * - added skeleton for GG-II and Amiga PCMCIA
8 * 2/3/01 RZ: - moved a few more defs into raw_io.h
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.
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
18 * moved mem{cpy,set}_*io inside CONFIG_PCI
26 #include <linux/compiler.h>
27 #include <asm/raw_io.h>
28 #include <asm/virtconvert.h>
30 #include <asm-generic/iomap.h>
33 #include <asm/atarihw.h>
38 * IO/MEM definitions for various ISA bridges
44 #define q40_isa_io_base 0xff400000
45 #define q40_isa_mem_base 0xff800000
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)))
55 /* GG-II Zorro to ISA bridge */
58 extern 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))
72 #ifdef CONFIG_AMIGA_PCMCIA
73 #include <asm/amigayle.h>
75 #define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
76 #define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )
84 #endif /* AMIGA_PCMCIA */
98 #if defined(CONFIG_Q40) && !defined(MULTI_ISA)
99 #define ISA_TYPE Q40_ISA
102 #if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
103 #define ISA_TYPE AG_ISA
106 #if defined(CONFIG_GG2) && !defined(MULTI_ISA)
107 #define ISA_TYPE GG2_ISA
115 #define ISA_TYPE isa_type
116 #define ISA_SEX isa_sex
120 * define inline addr translation functions. Normally only one variant will
121 * be compiled in so the case statement will be optimised away
124 static inline u8 __iomem *isa_itb(unsigned long addr)
129 case Q40_ISA: return (u8 __iomem *)Q40_ISA_IO_B(addr);
132 case GG2_ISA: return (u8 __iomem *)GG2_ISA_IO_B(addr);
134 #ifdef CONFIG_AMIGA_PCMCIA
135 case AG_ISA: return (u8 __iomem *)AG_ISA_IO_B(addr);
137 default: return NULL; /* avoid warnings, just in case */
140 static inline u16 __iomem *isa_itw(unsigned long addr)
145 case Q40_ISA: return (u16 __iomem *)Q40_ISA_IO_W(addr);
148 case GG2_ISA: return (u16 __iomem *)GG2_ISA_IO_W(addr);
150 #ifdef CONFIG_AMIGA_PCMCIA
151 case AG_ISA: return (u16 __iomem *)AG_ISA_IO_W(addr);
153 default: return NULL; /* avoid warnings, just in case */
156 static inline u32 __iomem *isa_itl(unsigned long addr)
160 #ifdef CONFIG_AMIGA_PCMCIA
161 case AG_ISA: return (u32 __iomem *)AG_ISA_IO_W(addr);
163 default: return 0; /* avoid warnings, just in case */
166 static inline u8 __iomem *isa_mtb(unsigned long addr)
171 case Q40_ISA: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
174 case GG2_ISA: return (u8 __iomem *)GG2_ISA_MEM_B(addr);
176 #ifdef CONFIG_AMIGA_PCMCIA
177 case AG_ISA: return (u8 __iomem *)addr;
179 default: return NULL; /* avoid warnings, just in case */
182 static inline u16 __iomem *isa_mtw(unsigned long addr)
187 case Q40_ISA: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
190 case GG2_ISA: return (u16 __iomem *)GG2_ISA_MEM_W(addr);
192 #ifdef CONFIG_AMIGA_PCMCIA
193 case AG_ISA: return (u16 __iomem *)addr;
195 default: return NULL; /* avoid warnings, just in case */
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)))
202 #define isa_inl(port) (ISA_SEX ? in_be32(isa_itl(port)) : in_le32(isa_itl(port)))
203 #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)))
205 #define isa_outl(val,port) (ISA_SEX ? out_be32(isa_itl(port),(val)) : out_le32(isa_itl(port),(val)))
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)))
216 static inline void isa_delay(void)
221 case Q40_ISA: isa_outb(0,0x80); break;
226 #ifdef CONFIG_AMIGA_PCMCIA
229 default: break; /* avoid warnings */
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();})
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))
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)))
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)))
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))
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))
259 #endif /* CONFIG_ISA */
262 #if defined(CONFIG_ISA) && !defined(CONFIG_PCI)
264 #define inb_p isa_inb_p
265 #define outb isa_outb
266 #define outb_p isa_outb_p
268 #define inw_p isa_inw_p
269 #define outw isa_outw
270 #define outw_p isa_outw_p
272 #define inl_p isa_inl_p
273 #define outl isa_outl
274 #define outl_p isa_outl_p
275 #define insb isa_insb
276 #define insw isa_insw
277 #define insl isa_insl
278 #define outsb isa_outsb
279 #define outsw isa_outsw
280 #define outsl isa_outsl
281 #define readb isa_readb
282 #define readw isa_readw
283 #define writeb isa_writeb
284 #define writew isa_writew
285 #endif /* CONFIG_ISA */
287 #if defined(CONFIG_PCI)
289 #define readl(addr) in_le32(addr)
290 #define writel(val,addr) out_le32((addr),(val))
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))
298 #define readb_relaxed(addr) readb(addr)
299 #define readw_relaxed(addr) readw(addr)
300 #define readl_relaxed(addr) readl(addr)
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))
307 #define inl(port) in_le32(port)
308 #define outl(val,port) out_le32((port),(val))
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
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))
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)))
331 #endif /* CONFIG_PCI */
333 #if !defined(CONFIG_ISA) && !defined(CONFIG_PCI)
335 * We need to define dummy functions for GENERIC_IOMAP support.
337 #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)
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)
354 * These should be valid on any ioremap()ed region
356 #define readb(addr) in_8(addr)
357 #define writeb(val,addr) out_8((addr),(val))
358 #define readw(addr) in_le16(addr)
359 #define writew(val,addr) out_le16((addr),(val))
361 #if !defined(CONFIG_PCI)
362 #define readl(addr) in_le32(addr)
363 #define writel(val,addr) out_le32((addr),(val))
368 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
370 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
372 static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
374 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
376 static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
379 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
381 static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
384 return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
387 static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
389 __builtin_memset((void __force *) addr, val, count);
391 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
393 __builtin_memcpy(dst, (void __force *) src, count);
395 static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
397 __builtin_memcpy((void __force *) dst, src, count);
401 #define IO_SPACE_LIMIT 0xffff
403 #define IO_SPACE_LIMIT 0x0fffffff
406 #endif /* __KERNEL__ */
408 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
411 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
414 #define xlate_dev_mem_ptr(p) __va(p)
417 * Convert a virtual cached pointer to an uncached pointer
419 #define xlate_dev_kmem_ptr(p) p