1 /*
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 should not be used by any driver unless it does
11 * ISA 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 ISA I/O
15 * isa_readX(),isa_writeX() are for ISA memory
16 */
17
18 #ifndef _IO_H
19 #define _IO_H
20
21 #ifdef __KERNEL__
22
23 #define ARCH_HAS_IOREMAP_WT
24
25 #include <linux/compiler.h>
26 #include <asm/raw_io.h>
27 #include <asm/virtconvert.h>
28
29 #include <asm-generic/iomap.h>
30
31 #ifdef CONFIG_ATARI
32 #include <asm/atarihw.h>
33 #endif
34
35
36 /*
37 * IO/MEM definitions for various ISA bridges
38 */
39
40
41 #ifdef CONFIG_Q40
42
43 #define q40_isa_io_base 0xff400000
44 #define q40_isa_mem_base 0xff800000
45
46 #define Q40_ISA_IO_B(ioaddr) (q40_isa_io_base+1+4*((unsigned long)(ioaddr)))
47 #define Q40_ISA_IO_W(ioaddr) (q40_isa_io_base+ 4*((unsigned long)(ioaddr)))
48 #define Q40_ISA_MEM_B(madr) (q40_isa_mem_base+1+4*((unsigned long)(madr)))
49 #define Q40_ISA_MEM_W(madr) (q40_isa_mem_base+ 4*((unsigned long)(madr)))
50
51 #define MULTI_ISA 0
52 #endif /* Q40 */
53
54 #ifdef CONFIG_AMIGA_PCMCIA
55 #include <asm/amigayle.h>
56
57 #define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
58 #define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )
59
60 #ifndef MULTI_ISA
61 #define MULTI_ISA 0
62 #else
63 #undef MULTI_ISA
64 #define MULTI_ISA 1
65 #endif
66 #endif /* AMIGA_PCMCIA */
67
68 #ifdef CONFIG_ATARI_ROM_ISA
69
70 #define enec_isa_read_base 0xfffa0000
71 #define enec_isa_write_base 0xfffb0000
72
73 #define ENEC_ISA_IO_B(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
74 #define ENEC_ISA_IO_W(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
75 #define ENEC_ISA_MEM_B(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
76 #define ENEC_ISA_MEM_W(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
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 /* ATARI_ROM_ISA */
85
86
87 #if defined(CONFIG_PCI) && defined(CONFIG_COLDFIRE)
88
89 #define HAVE_ARCH_PIO_SIZE
90 #define PIO_OFFSET 0
91 #define PIO_MASK 0xffff
92 #define PIO_RESERVED 0x10000
93
94 u8 mcf_pci_inb(u32 addr);
95 u16 mcf_pci_inw(u32 addr);
96 u32 mcf_pci_inl(u32 addr);
97 void mcf_pci_insb(u32 addr, u8 *buf, u32 len);
98 void mcf_pci_insw(u32 addr, u16 *buf, u32 len);
99 void mcf_pci_insl(u32 addr, u32 *buf, u32 len);
100
101 void mcf_pci_outb(u8 v, u32 addr);
102 void mcf_pci_outw(u16 v, u32 addr);
103 void mcf_pci_outl(u32 v, u32 addr);
104 void mcf_pci_outsb(u32 addr, const u8 *buf, u32 len);
105 void mcf_pci_outsw(u32 addr, const u16 *buf, u32 len);
106 void mcf_pci_outsl(u32 addr, const u32 *buf, u32 len);
107
108 #define inb mcf_pci_inb
109 #define inb_p mcf_pci_inb
110 #define inw mcf_pci_inw
111 #define inw_p mcf_pci_inw
112 #define inl mcf_pci_inl
113 #define inl_p mcf_pci_inl
114 #define insb mcf_pci_insb
115 #define insw mcf_pci_insw
116 #define insl mcf_pci_insl
117
118 #define outb mcf_pci_outb
119 #define outb_p mcf_pci_outb
120 #define outw mcf_pci_outw
121 #define outw_p mcf_pci_outw
122 #define outl mcf_pci_outl
123 #define outl_p mcf_pci_outl
124 #define outsb mcf_pci_outsb
125 #define outsw mcf_pci_outsw
126 #define outsl mcf_pci_outsl
127
128 #define readb(addr) in_8(addr)
129 #define writeb(v, addr) out_8((addr), (v))
130 #define readw(addr) in_le16(addr)
131 #define writew(v, addr) out_le16((addr), (v))
132
133 #elif defined(CONFIG_ISA) || defined(CONFIG_ATARI_ROM_ISA)
134
135 #if MULTI_ISA == 0
136 #undef MULTI_ISA
137 #endif
138
139 #define ISA_TYPE_Q40 (1)
140 #define ISA_TYPE_AG (2)
141 #define ISA_TYPE_ENEC (3)
142
143 #if defined(CONFIG_Q40) && !defined(MULTI_ISA)
144 #define ISA_TYPE ISA_TYPE_Q40
145 #define ISA_SEX 0
146 #endif
147 #if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
148 #define ISA_TYPE ISA_TYPE_AG
149 #define ISA_SEX 1
150 #endif
151 #if defined(CONFIG_ATARI_ROM_ISA) && !defined(MULTI_ISA)
152 #define ISA_TYPE ISA_TYPE_ENEC
153 #define ISA_SEX 0
154 #endif
155
156 #ifdef MULTI_ISA
157 extern int isa_type;
158 extern int isa_sex;
159
160 #define ISA_TYPE isa_type
161 #define ISA_SEX isa_sex
162 #endif
163
164 /*
165 * define inline addr translation functions. Normally only one variant will
166 * be compiled in so the case statement will be optimised away
167 */
168
isa_itb(unsigned long addr)169 static inline u8 __iomem *isa_itb(unsigned long addr)
170 {
171 switch(ISA_TYPE)
172 {
173 #ifdef CONFIG_Q40
174 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_IO_B(addr);
175 #endif
176 #ifdef CONFIG_AMIGA_PCMCIA
177 case ISA_TYPE_AG: return (u8 __iomem *)AG_ISA_IO_B(addr);
178 #endif
179 #ifdef CONFIG_ATARI_ROM_ISA
180 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_IO_B(addr);
181 #endif
182 default: return NULL; /* avoid warnings, just in case */
183 }
184 }
isa_itw(unsigned long addr)185 static inline u16 __iomem *isa_itw(unsigned long addr)
186 {
187 switch(ISA_TYPE)
188 {
189 #ifdef CONFIG_Q40
190 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_IO_W(addr);
191 #endif
192 #ifdef CONFIG_AMIGA_PCMCIA
193 case ISA_TYPE_AG: return (u16 __iomem *)AG_ISA_IO_W(addr);
194 #endif
195 #ifdef CONFIG_ATARI_ROM_ISA
196 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_IO_W(addr);
197 #endif
198 default: return NULL; /* avoid warnings, just in case */
199 }
200 }
isa_itl(unsigned long addr)201 static inline u32 __iomem *isa_itl(unsigned long addr)
202 {
203 switch(ISA_TYPE)
204 {
205 #ifdef CONFIG_AMIGA_PCMCIA
206 case ISA_TYPE_AG: return (u32 __iomem *)AG_ISA_IO_W(addr);
207 #endif
208 default: return 0; /* avoid warnings, just in case */
209 }
210 }
isa_mtb(unsigned long addr)211 static inline u8 __iomem *isa_mtb(unsigned long addr)
212 {
213 switch(ISA_TYPE)
214 {
215 #ifdef CONFIG_Q40
216 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
217 #endif
218 #ifdef CONFIG_AMIGA_PCMCIA
219 case ISA_TYPE_AG: return (u8 __iomem *)addr;
220 #endif
221 #ifdef CONFIG_ATARI_ROM_ISA
222 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_MEM_B(addr);
223 #endif
224 default: return NULL; /* avoid warnings, just in case */
225 }
226 }
isa_mtw(unsigned long addr)227 static inline u16 __iomem *isa_mtw(unsigned long addr)
228 {
229 switch(ISA_TYPE)
230 {
231 #ifdef CONFIG_Q40
232 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
233 #endif
234 #ifdef CONFIG_AMIGA_PCMCIA
235 case ISA_TYPE_AG: return (u16 __iomem *)addr;
236 #endif
237 #ifdef CONFIG_ATARI_ROM_ISA
238 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_MEM_W(addr);
239 #endif
240 default: return NULL; /* avoid warnings, just in case */
241 }
242 }
243
244
245 #define isa_inb(port) in_8(isa_itb(port))
246 #define isa_inw(port) (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
247 #define isa_inl(port) (ISA_SEX ? in_be32(isa_itl(port)) : in_le32(isa_itl(port)))
248 #define isa_outb(val,port) out_8(isa_itb(port),(val))
249 #define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))
250 #define isa_outl(val,port) (ISA_SEX ? out_be32(isa_itl(port),(val)) : out_le32(isa_itl(port),(val)))
251
252 #define isa_readb(p) in_8(isa_mtb((unsigned long)(p)))
253 #define isa_readw(p) \
254 (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \
255 : in_le16(isa_mtw((unsigned long)(p))))
256 #define isa_writeb(val,p) out_8(isa_mtb((unsigned long)(p)),(val))
257 #define isa_writew(val,p) \
258 (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \
259 : out_le16(isa_mtw((unsigned long)(p)),(val)))
260
261 #ifdef CONFIG_ATARI_ROM_ISA
262 #define isa_rom_inb(port) rom_in_8(isa_itb(port))
263 #define isa_rom_inw(port) \
264 (ISA_SEX ? rom_in_be16(isa_itw(port)) \
265 : rom_in_le16(isa_itw(port)))
266
267 #define isa_rom_outb(val, port) rom_out_8(isa_itb(port), (val))
268 #define isa_rom_outw(val, port) \
269 (ISA_SEX ? rom_out_be16(isa_itw(port), (val)) \
270 : rom_out_le16(isa_itw(port), (val)))
271
272 #define isa_rom_readb(p) rom_in_8(isa_mtb((unsigned long)(p)))
273 #define isa_rom_readw(p) \
274 (ISA_SEX ? rom_in_be16(isa_mtw((unsigned long)(p))) \
275 : rom_in_le16(isa_mtw((unsigned long)(p))))
276 #define isa_rom_readw_swap(p) \
277 (ISA_SEX ? rom_in_le16(isa_mtw((unsigned long)(p))) \
278 : rom_in_be16(isa_mtw((unsigned long)(p))))
279 #define isa_rom_readw_raw(p) rom_in_be16(isa_mtw((unsigned long)(p)))
280
281 #define isa_rom_writeb(val, p) rom_out_8(isa_mtb((unsigned long)(p)), (val))
282 #define isa_rom_writew(val, p) \
283 (ISA_SEX ? rom_out_be16(isa_mtw((unsigned long)(p)), (val)) \
284 : rom_out_le16(isa_mtw((unsigned long)(p)), (val)))
285 #define isa_rom_writew_swap(val, p) \
286 (ISA_SEX ? rom_out_le16(isa_mtw((unsigned long)(p)), (val)) \
287 : rom_out_be16(isa_mtw((unsigned long)(p)), (val)))
288 #define isa_rom_writew_raw(val, p) rom_out_be16(isa_mtw((unsigned long)(p)), (val))
289 #endif /* CONFIG_ATARI_ROM_ISA */
290
isa_delay(void)291 static inline void isa_delay(void)
292 {
293 switch(ISA_TYPE)
294 {
295 #ifdef CONFIG_Q40
296 case ISA_TYPE_Q40: isa_outb(0,0x80); break;
297 #endif
298 #ifdef CONFIG_AMIGA_PCMCIA
299 case ISA_TYPE_AG: break;
300 #endif
301 #ifdef CONFIG_ATARI_ROM_ISA
302 case ISA_TYPE_ENEC: break;
303 #endif
304 default: break; /* avoid warnings */
305 }
306 }
307
308 #define isa_inb_p(p) ({u8 v=isa_inb(p);isa_delay();v;})
309 #define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();})
310 #define isa_inw_p(p) ({u16 v=isa_inw(p);isa_delay();v;})
311 #define isa_outw_p(v,p) ({isa_outw((v),(p));isa_delay();})
312 #define isa_inl_p(p) ({u32 v=isa_inl(p);isa_delay();v;})
313 #define isa_outl_p(v,p) ({isa_outl((v),(p));isa_delay();})
314
315 #define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr))
316 #define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr))
317
318 #define isa_insw(port, buf, nr) \
319 (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
320 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
321
322 #define isa_outsw(port, buf, nr) \
323 (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
324 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
325
326 #define isa_insl(port, buf, nr) \
327 (ISA_SEX ? raw_insl(isa_itl(port), (u32 *)(buf), (nr)) : \
328 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
329
330 #define isa_outsl(port, buf, nr) \
331 (ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) : \
332 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
333
334
335 #ifdef CONFIG_ATARI_ROM_ISA
336 #define isa_rom_inb_p(p) ({ u8 _v = isa_rom_inb(p); isa_delay(); _v; })
337 #define isa_rom_inw_p(p) ({ u16 _v = isa_rom_inw(p); isa_delay(); _v; })
338 #define isa_rom_outb_p(v, p) ({ isa_rom_outb((v), (p)); isa_delay(); })
339 #define isa_rom_outw_p(v, p) ({ isa_rom_outw((v), (p)); isa_delay(); })
340
341 #define isa_rom_insb(port, buf, nr) raw_rom_insb(isa_itb(port), (u8 *)(buf), (nr))
342
343 #define isa_rom_insw(port, buf, nr) \
344 (ISA_SEX ? raw_rom_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
345 raw_rom_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
346
347 #define isa_rom_outsb(port, buf, nr) raw_rom_outsb(isa_itb(port), (u8 *)(buf), (nr))
348
349 #define isa_rom_outsw(port, buf, nr) \
350 (ISA_SEX ? raw_rom_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
351 raw_rom_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
352 #endif /* CONFIG_ATARI_ROM_ISA */
353
354 #endif /* CONFIG_ISA || CONFIG_ATARI_ROM_ISA */
355
356
357 #if defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA)
358 #define inb isa_inb
359 #define inb_p isa_inb_p
360 #define outb isa_outb
361 #define outb_p isa_outb_p
362 #define inw isa_inw
363 #define inw_p isa_inw_p
364 #define outw isa_outw
365 #define outw_p isa_outw_p
366 #define inl isa_inl
367 #define inl_p isa_inl_p
368 #define outl isa_outl
369 #define outl_p isa_outl_p
370 #define insb isa_insb
371 #define insw isa_insw
372 #define insl isa_insl
373 #define outsb isa_outsb
374 #define outsw isa_outsw
375 #define outsl isa_outsl
376 #define readb isa_readb
377 #define readw isa_readw
378 #define writeb isa_writeb
379 #define writew isa_writew
380 #endif /* CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */
381
382 #ifdef CONFIG_ATARI_ROM_ISA
383 /*
384 * kernel with both ROM port ISA and IDE compiled in, those have
385 * conflicting defs for in/out. Simply consider port < 1024
386 * ROM port ISA and everything else regular ISA for IDE. read,write defined
387 * below.
388 */
389 #define inb(port) ((port) < 1024 ? isa_rom_inb(port) : in_8(port))
390 #define inb_p(port) ((port) < 1024 ? isa_rom_inb_p(port) : in_8(port))
391 #define inw(port) ((port) < 1024 ? isa_rom_inw(port) : in_le16(port))
392 #define inw_p(port) ((port) < 1024 ? isa_rom_inw_p(port) : in_le16(port))
393 #define inl isa_inl
394 #define inl_p isa_inl_p
395
396 #define outb(val, port) ((port) < 1024 ? isa_rom_outb((val), (port)) : out_8((port), (val)))
397 #define outb_p(val, port) ((port) < 1024 ? isa_rom_outb_p((val), (port)) : out_8((port), (val)))
398 #define outw(val, port) ((port) < 1024 ? isa_rom_outw((val), (port)) : out_le16((port), (val)))
399 #define outw_p(val, port) ((port) < 1024 ? isa_rom_outw_p((val), (port)) : out_le16((port), (val)))
400 #define outl isa_outl
401 #define outl_p isa_outl_p
402
403 #define insb(port, buf, nr) ((port) < 1024 ? isa_rom_insb((port), (buf), (nr)) : isa_insb((port), (buf), (nr)))
404 #define insw(port, buf, nr) ((port) < 1024 ? isa_rom_insw((port), (buf), (nr)) : isa_insw((port), (buf), (nr)))
405 #define insl isa_insl
406 #define outsb(port, buf, nr) ((port) < 1024 ? isa_rom_outsb((port), (buf), (nr)) : isa_outsb((port), (buf), (nr)))
407 #define outsw(port, buf, nr) ((port) < 1024 ? isa_rom_outsw((port), (buf), (nr)) : isa_outsw((port), (buf), (nr)))
408 #define outsl isa_outsl
409
410 #define readb(addr) in_8(addr)
411 #define writeb(val, addr) out_8((addr), (val))
412 #define readw(addr) in_le16(addr)
413 #define writew(val, addr) out_le16((addr), (val))
414 #endif /* CONFIG_ATARI_ROM_ISA */
415
416 #if !defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA) && \
417 !(defined(CONFIG_PCI) && defined(CONFIG_COLDFIRE))
418 /*
419 * We need to define dummy functions for GENERIC_IOMAP support.
420 */
421 #define inb(port) 0xff
422 #define inb_p(port) 0xff
423 #define outb(val,port) ((void)0)
424 #define outb_p(val,port) ((void)0)
425 #define inw(port) 0xffff
426 #define inw_p(port) 0xffff
427 #define outw(val,port) ((void)0)
428 #define outw_p(val,port) ((void)0)
429 #define inl(port) 0xffffffffUL
430 #define inl_p(port) 0xffffffffUL
431 #define outl(val,port) ((void)0)
432 #define outl_p(val,port) ((void)0)
433
434 #define insb(port,buf,nr) ((void)0)
435 #define outsb(port,buf,nr) ((void)0)
436 #define insw(port,buf,nr) ((void)0)
437 #define outsw(port,buf,nr) ((void)0)
438 #define insl(port,buf,nr) ((void)0)
439 #define outsl(port,buf,nr) ((void)0)
440
441 /*
442 * These should be valid on any ioremap()ed region
443 */
444 #define readb(addr) in_8(addr)
445 #define writeb(val,addr) out_8((addr),(val))
446 #define readw(addr) in_le16(addr)
447 #define writew(val,addr) out_le16((addr),(val))
448
449 #endif /* !CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */
450
451 #define readl(addr) in_le32(addr)
452 #define writel(val,addr) out_le32((addr),(val))
453
454 #define readsb(port, buf, nr) raw_insb((port), (u8 *)(buf), (nr))
455 #define readsw(port, buf, nr) raw_insw((port), (u16 *)(buf), (nr))
456 #define readsl(port, buf, nr) raw_insl((port), (u32 *)(buf), (nr))
457 #define writesb(port, buf, nr) raw_outsb((port), (u8 *)(buf), (nr))
458 #define writesw(port, buf, nr) raw_outsw((port), (u16 *)(buf), (nr))
459 #define writesl(port, buf, nr) raw_outsl((port), (u32 *)(buf), (nr))
460
461 #define mmiowb()
462
ioremap(unsigned long physaddr,unsigned long size)463 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
464 {
465 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
466 }
ioremap_nocache(unsigned long physaddr,unsigned long size)467 static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
468 {
469 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
470 }
471 #define ioremap_uc ioremap_nocache
ioremap_wt(unsigned long physaddr,unsigned long size)472 static inline void __iomem *ioremap_wt(unsigned long physaddr,
473 unsigned long size)
474 {
475 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
476 }
ioremap_fullcache(unsigned long physaddr,unsigned long size)477 static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
478 unsigned long size)
479 {
480 return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
481 }
482
memset_io(volatile void __iomem * addr,unsigned char val,int count)483 static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
484 {
485 __builtin_memset((void __force *) addr, val, count);
486 }
memcpy_fromio(void * dst,const volatile void __iomem * src,int count)487 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
488 {
489 __builtin_memcpy(dst, (void __force *) src, count);
490 }
memcpy_toio(volatile void __iomem * dst,const void * src,int count)491 static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
492 {
493 __builtin_memcpy((void __force *) dst, src, count);
494 }
495
496 #ifndef CONFIG_SUN3
497 #define IO_SPACE_LIMIT 0xffff
498 #else
499 #define IO_SPACE_LIMIT 0x0fffffff
500 #endif
501
502 #endif /* __KERNEL__ */
503
504 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
505
506 /*
507 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
508 * access
509 */
510 #define xlate_dev_mem_ptr(p) __va(p)
511
512 /*
513 * Convert a virtual cached pointer to an uncached pointer
514 */
515 #define xlate_dev_kmem_ptr(p) p
516
ioport_map(unsigned long port,unsigned int nr)517 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
518 {
519 return (void __iomem *) port;
520 }
521
ioport_unmap(void __iomem * p)522 static inline void ioport_unmap(void __iomem *p)
523 {
524 }
525
526 #endif /* _IO_H */
527