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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/asm-m68k/io.h
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/config.h>
27 #include <linux/compiler.h>
28 #include <asm/raw_io.h>
29 #include <asm/virtconvert.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 u8 __iomem
*isa_mtb(unsigned long addr
)
161 case Q40_ISA
: return (u8 __iomem
*)Q40_ISA_MEM_B(addr
);
164 case GG2_ISA
: return (u8 __iomem
*)GG2_ISA_MEM_B(addr
);
166 #ifdef CONFIG_AMIGA_PCMCIA
167 case AG_ISA
: return (u8 __iomem
*)addr
;
169 default: return NULL
; /* avoid warnings, just in case */
172 static inline u16 __iomem
*isa_mtw(unsigned long addr
)
177 case Q40_ISA
: return (u16 __iomem
*)Q40_ISA_MEM_W(addr
);
180 case GG2_ISA
: return (u16 __iomem
*)GG2_ISA_MEM_W(addr
);
182 #ifdef CONFIG_AMIGA_PCMCIA
183 case AG_ISA
: return (u16 __iomem
*)addr
;
185 default: return NULL
; /* avoid warnings, just in case */
190 #define isa_inb(port) in_8(isa_itb(port))
191 #define isa_inw(port) (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
192 #define isa_outb(val,port) out_8(isa_itb(port),(val))
193 #define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))
195 #define isa_readb(p) in_8(isa_mtb((unsigned long)(p)))
196 #define isa_readw(p) \
197 (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \
198 : in_le16(isa_mtw((unsigned long)(p))))
199 #define isa_writeb(val,p) out_8(isa_mtb((unsigned long)(p)),(val))
200 #define isa_writew(val,p) \
201 (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \
202 : out_le16(isa_mtw((unsigned long)(p)),(val)))
204 static inline void isa_delay(void)
209 case Q40_ISA
: isa_outb(0,0x80); break;
214 #ifdef CONFIG_AMIGA_PCMCIA
217 default: break; /* avoid warnings */
221 #define isa_inb_p(p) ({u8 v=isa_inb(p);isa_delay();v;})
222 #define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();})
223 #define isa_inw_p(p) ({u16 v=isa_inw(p);isa_delay();v;})
224 #define isa_outw_p(v,p) ({isa_outw((v),(p));isa_delay();})
225 #define isa_inl_p(p) ({u32 v=isa_inl(p);isa_delay();v;})
226 #define isa_outl_p(v,p) ({isa_outl((v),(p));isa_delay();})
228 #define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr))
229 #define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr))
231 #define isa_insw(port, buf, nr) \
232 (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
233 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
235 #define isa_outsw(port, buf, nr) \
236 (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
237 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
238 #endif /* CONFIG_ISA */
241 #if defined(CONFIG_ISA) && !defined(CONFIG_PCI)
243 #define inb_p isa_inb_p
244 #define outb isa_outb
245 #define outb_p isa_outb_p
247 #define inw_p isa_inw_p
248 #define outw isa_outw
249 #define outw_p isa_outw_p
251 #define inl_p isa_inw_p
252 #define outl isa_outw
253 #define outl_p isa_outw_p
254 #define insb isa_insb
255 #define insw isa_insw
256 #define outsb isa_outsb
257 #define outsw isa_outsw
258 #define readb isa_readb
259 #define readw isa_readw
260 #define writeb isa_writeb
261 #define writew isa_writew
262 #endif /* CONFIG_ISA */
264 #if defined(CONFIG_PCI)
266 #define inl(port) in_le32(port)
267 #define outl(val,port) out_le32((port),(val))
268 #define readl(addr) in_le32(addr)
269 #define writel(val,addr) out_le32((addr),(val))
271 /* those can be defined for both ISA and PCI - it won't work though */
272 #define readb(addr) in_8(addr)
273 #define readw(addr) in_le16(addr)
274 #define writeb(val,addr) out_8((addr),(val))
275 #define writew(val,addr) out_le16((addr),(val))
277 #define readb_relaxed(addr) readb(addr)
278 #define readw_relaxed(addr) readw(addr)
279 #define readl_relaxed(addr) readl(addr)
282 #define inb(port) in_8(port)
283 #define outb(val,port) out_8((port),(val))
284 #define inw(port) in_le16(port)
285 #define outw(val,port) out_le16((port),(val))
289 * kernel with both ISA and PCI compiled in, those have
290 * conflicting defs for in/out. Simply consider port < 1024
291 * ISA and everything else PCI. read,write not defined
294 #define inb(port) ((port)<1024 ? isa_inb(port) : in_8(port))
295 #define inb_p(port) ((port)<1024 ? isa_inb_p(port) : in_8(port))
296 #define inw(port) ((port)<1024 ? isa_inw(port) : in_le16(port))
297 #define inw_p(port) ((port)<1024 ? isa_inw_p(port) : in_le16(port))
298 #define inl(port) ((port)<1024 ? isa_inl(port) : in_le32(port))
299 #define inl_p(port) ((port)<1024 ? isa_inl_p(port) : in_le32(port))
301 #define outb(val,port) ((port)<1024 ? isa_outb((val),(port)) : out_8((port),(val)))
302 #define outb_p(val,port) ((port)<1024 ? isa_outb_p((val),(port)) : out_8((port),(val)))
303 #define outw(val,port) ((port)<1024 ? isa_outw((val),(port)) : out_le16((port),(val)))
304 #define outw_p(val,port) ((port)<1024 ? isa_outw_p((val),(port)) : out_le16((port),(val)))
305 #define outl(val,port) ((port)<1024 ? isa_outl((val),(port)) : out_le32((port),(val)))
306 #define outl_p(val,port) ((port)<1024 ? isa_outl_p((val),(port)) : out_le32((port),(val)))
308 #endif /* CONFIG_PCI */
310 #if !defined(CONFIG_ISA) && !defined(CONFIG_PCI) && defined(CONFIG_HP300)
312 * We need to define dummy functions otherwise drivers/serial/8250.c doesn't link
314 #define inb(port) 0xff
315 #define inb_p(port) 0xff
316 #define outb(val,port) do { } while (0)
317 #define outb_p(val,port) do { } while (0)
320 * These should be valid on any ioremap()ed region
322 #define readb(addr) in_8(addr)
323 #define writeb(val,addr) out_8((addr),(val))
324 #define readl(addr) in_le32(addr)
325 #define writel(val,addr) out_le32((addr),(val))
330 static inline void __iomem
*ioremap(unsigned long physaddr
, unsigned long size
)
332 return __ioremap(physaddr
, size
, IOMAP_NOCACHE_SER
);
334 static inline void __iomem
*ioremap_nocache(unsigned long physaddr
, unsigned long size
)
336 return __ioremap(physaddr
, size
, IOMAP_NOCACHE_SER
);
338 static inline void __iomem
*ioremap_writethrough(unsigned long physaddr
,
341 return __ioremap(physaddr
, size
, IOMAP_WRITETHROUGH
);
343 static inline void __iomem
*ioremap_fullcache(unsigned long physaddr
,
346 return __ioremap(physaddr
, size
, IOMAP_FULL_CACHING
);
350 /* m68k caches aren't DMA coherent */
351 extern void dma_cache_wback_inv(unsigned long start
, unsigned long size
);
352 extern void dma_cache_wback(unsigned long start
, unsigned long size
);
353 extern void dma_cache_inv(unsigned long start
, unsigned long size
);
357 #define IO_SPACE_LIMIT 0xffff
359 #define IO_SPACE_LIMIT 0x0fffffff
362 #endif /* __KERNEL__ */
364 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
367 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
370 #define xlate_dev_mem_ptr(p) __va(p)
373 * Convert a virtual cached pointer to an uncached pointer
375 #define xlate_dev_kmem_ptr(p) p