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 #include <linux/compiler.h>
24 #include <asm/raw_io.h>
25 #include <asm/virtconvert.h>
26
27 #include <asm-generic/iomap.h>
28
29 #ifdef CONFIG_ATARI
30 #include <asm/atarihw.h>
31 #endif
32
33
34 /*
35 * IO/MEM definitions for various ISA bridges
36 */
37
38
39 #ifdef CONFIG_Q40
40
41 #define q40_isa_io_base 0xff400000
42 #define q40_isa_mem_base 0xff800000
43
44 #define Q40_ISA_IO_B(ioaddr) (q40_isa_io_base+1+4*((unsigned long)(ioaddr)))
45 #define Q40_ISA_IO_W(ioaddr) (q40_isa_io_base+ 4*((unsigned long)(ioaddr)))
46 #define Q40_ISA_MEM_B(madr) (q40_isa_mem_base+1+4*((unsigned long)(madr)))
47 #define Q40_ISA_MEM_W(madr) (q40_isa_mem_base+ 4*((unsigned long)(madr)))
48
49 #define MULTI_ISA 0
50 #endif /* Q40 */
51
52 #ifdef CONFIG_AMIGA_PCMCIA
53 #include <asm/amigayle.h>
54
55 #define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
56 #define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )
57
58 #ifndef MULTI_ISA
59 #define MULTI_ISA 0
60 #else
61 #undef MULTI_ISA
62 #define MULTI_ISA 1
63 #endif
64 #endif /* AMIGA_PCMCIA */
65
66 #ifdef CONFIG_ATARI_ROM_ISA
67
68 #define enec_isa_read_base 0xfffa0000
69 #define enec_isa_write_base 0xfffb0000
70
71 #define ENEC_ISA_IO_B(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
72 #define ENEC_ISA_IO_W(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
73 #define ENEC_ISA_MEM_B(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
74 #define ENEC_ISA_MEM_W(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
75
76 #ifndef MULTI_ISA
77 #define MULTI_ISA 0
78 #else
79 #undef MULTI_ISA
80 #define MULTI_ISA 1
81 #endif
82 #endif /* ATARI_ROM_ISA */
83
84
85 #if defined(CONFIG_PCI) && defined(CONFIG_COLDFIRE)
86
87 #define HAVE_ARCH_PIO_SIZE
88 #define PIO_OFFSET 0
89 #define PIO_MASK 0xffff
90 #define PIO_RESERVED 0x10000
91
92 u8 mcf_pci_inb(u32 addr);
93 u16 mcf_pci_inw(u32 addr);
94 u32 mcf_pci_inl(u32 addr);
95 void mcf_pci_insb(u32 addr, u8 *buf, u32 len);
96 void mcf_pci_insw(u32 addr, u16 *buf, u32 len);
97 void mcf_pci_insl(u32 addr, u32 *buf, u32 len);
98
99 void mcf_pci_outb(u8 v, u32 addr);
100 void mcf_pci_outw(u16 v, u32 addr);
101 void mcf_pci_outl(u32 v, u32 addr);
102 void mcf_pci_outsb(u32 addr, const u8 *buf, u32 len);
103 void mcf_pci_outsw(u32 addr, const u16 *buf, u32 len);
104 void mcf_pci_outsl(u32 addr, const u32 *buf, u32 len);
105
106 #define inb mcf_pci_inb
107 #define inb_p mcf_pci_inb
108 #define inw mcf_pci_inw
109 #define inw_p mcf_pci_inw
110 #define inl mcf_pci_inl
111 #define inl_p mcf_pci_inl
112 #define insb mcf_pci_insb
113 #define insw mcf_pci_insw
114 #define insl mcf_pci_insl
115
116 #define outb mcf_pci_outb
117 #define outb_p mcf_pci_outb
118 #define outw mcf_pci_outw
119 #define outw_p mcf_pci_outw
120 #define outl mcf_pci_outl
121 #define outl_p mcf_pci_outl
122 #define outsb mcf_pci_outsb
123 #define outsw mcf_pci_outsw
124 #define outsl mcf_pci_outsl
125
126 #define readb(addr) in_8(addr)
127 #define writeb(v, addr) out_8((addr), (v))
128 #define readw(addr) in_le16(addr)
129 #define writew(v, addr) out_le16((addr), (v))
130
131 #elif defined(CONFIG_ISA) || defined(CONFIG_ATARI_ROM_ISA)
132
133 #if MULTI_ISA == 0
134 #undef MULTI_ISA
135 #endif
136
137 #define ISA_TYPE_Q40 (1)
138 #define ISA_TYPE_AG (2)
139 #define ISA_TYPE_ENEC (3)
140
141 #if defined(CONFIG_Q40) && !defined(MULTI_ISA)
142 #define ISA_TYPE ISA_TYPE_Q40
143 #define ISA_SEX 0
144 #endif
145 #if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
146 #define ISA_TYPE ISA_TYPE_AG
147 #define ISA_SEX 1
148 #endif
149 #if defined(CONFIG_ATARI_ROM_ISA) && !defined(MULTI_ISA)
150 #define ISA_TYPE ISA_TYPE_ENEC
151 #define ISA_SEX 0
152 #endif
153
154 #ifdef MULTI_ISA
155 extern int isa_type;
156 extern int isa_sex;
157
158 #define ISA_TYPE isa_type
159 #define ISA_SEX isa_sex
160 #endif
161
162 /*
163 * define inline addr translation functions. Normally only one variant will
164 * be compiled in so the case statement will be optimised away
165 */
166
isa_itb(unsigned long addr)167 static inline u8 __iomem *isa_itb(unsigned long addr)
168 {
169 switch(ISA_TYPE)
170 {
171 #ifdef CONFIG_Q40
172 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_IO_B(addr);
173 #endif
174 #ifdef CONFIG_AMIGA_PCMCIA
175 case ISA_TYPE_AG: return (u8 __iomem *)AG_ISA_IO_B(addr);
176 #endif
177 #ifdef CONFIG_ATARI_ROM_ISA
178 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_IO_B(addr);
179 #endif
180 default: return NULL; /* avoid warnings, just in case */
181 }
182 }
isa_itw(unsigned long addr)183 static inline u16 __iomem *isa_itw(unsigned long addr)
184 {
185 switch(ISA_TYPE)
186 {
187 #ifdef CONFIG_Q40
188 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_IO_W(addr);
189 #endif
190 #ifdef CONFIG_AMIGA_PCMCIA
191 case ISA_TYPE_AG: return (u16 __iomem *)AG_ISA_IO_W(addr);
192 #endif
193 #ifdef CONFIG_ATARI_ROM_ISA
194 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_IO_W(addr);
195 #endif
196 default: return NULL; /* avoid warnings, just in case */
197 }
198 }
isa_itl(unsigned long addr)199 static inline u32 __iomem *isa_itl(unsigned long addr)
200 {
201 switch(ISA_TYPE)
202 {
203 #ifdef CONFIG_AMIGA_PCMCIA
204 case ISA_TYPE_AG: return (u32 __iomem *)AG_ISA_IO_W(addr);
205 #endif
206 default: return 0; /* avoid warnings, just in case */
207 }
208 }
isa_mtb(unsigned long addr)209 static inline u8 __iomem *isa_mtb(unsigned long addr)
210 {
211 switch(ISA_TYPE)
212 {
213 #ifdef CONFIG_Q40
214 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
215 #endif
216 #ifdef CONFIG_AMIGA_PCMCIA
217 case ISA_TYPE_AG: return (u8 __iomem *)addr;
218 #endif
219 #ifdef CONFIG_ATARI_ROM_ISA
220 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_MEM_B(addr);
221 #endif
222 default: return NULL; /* avoid warnings, just in case */
223 }
224 }
isa_mtw(unsigned long addr)225 static inline u16 __iomem *isa_mtw(unsigned long addr)
226 {
227 switch(ISA_TYPE)
228 {
229 #ifdef CONFIG_Q40
230 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
231 #endif
232 #ifdef CONFIG_AMIGA_PCMCIA
233 case ISA_TYPE_AG: return (u16 __iomem *)addr;
234 #endif
235 #ifdef CONFIG_ATARI_ROM_ISA
236 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_MEM_W(addr);
237 #endif
238 default: return NULL; /* avoid warnings, just in case */
239 }
240 }
241
242
243 #define isa_inb(port) in_8(isa_itb(port))
244 #define isa_inw(port) (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
245 #define isa_inl(port) (ISA_SEX ? in_be32(isa_itl(port)) : in_le32(isa_itl(port)))
246 #define isa_outb(val,port) out_8(isa_itb(port),(val))
247 #define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))
248 #define isa_outl(val,port) (ISA_SEX ? out_be32(isa_itl(port),(val)) : out_le32(isa_itl(port),(val)))
249
250 #define isa_readb(p) in_8(isa_mtb((unsigned long)(p)))
251 #define isa_readw(p) \
252 (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \
253 : in_le16(isa_mtw((unsigned long)(p))))
254 #define isa_writeb(val,p) out_8(isa_mtb((unsigned long)(p)),(val))
255 #define isa_writew(val,p) \
256 (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \
257 : out_le16(isa_mtw((unsigned long)(p)),(val)))
258
259 #ifdef CONFIG_ATARI_ROM_ISA
260 #define isa_rom_inb(port) rom_in_8(isa_itb(port))
261 #define isa_rom_inw(port) \
262 (ISA_SEX ? rom_in_be16(isa_itw(port)) \
263 : rom_in_le16(isa_itw(port)))
264
265 #define isa_rom_outb(val, port) rom_out_8(isa_itb(port), (val))
266 #define isa_rom_outw(val, port) \
267 (ISA_SEX ? rom_out_be16(isa_itw(port), (val)) \
268 : rom_out_le16(isa_itw(port), (val)))
269
270 #define isa_rom_readb(p) rom_in_8(isa_mtb((unsigned long)(p)))
271 #define isa_rom_readw(p) \
272 (ISA_SEX ? rom_in_be16(isa_mtw((unsigned long)(p))) \
273 : rom_in_le16(isa_mtw((unsigned long)(p))))
274 #define isa_rom_readw_swap(p) \
275 (ISA_SEX ? rom_in_le16(isa_mtw((unsigned long)(p))) \
276 : rom_in_be16(isa_mtw((unsigned long)(p))))
277 #define isa_rom_readw_raw(p) rom_in_be16(isa_mtw((unsigned long)(p)))
278
279 #define isa_rom_writeb(val, p) rom_out_8(isa_mtb((unsigned long)(p)), (val))
280 #define isa_rom_writew(val, p) \
281 (ISA_SEX ? rom_out_be16(isa_mtw((unsigned long)(p)), (val)) \
282 : rom_out_le16(isa_mtw((unsigned long)(p)), (val)))
283 #define isa_rom_writew_swap(val, p) \
284 (ISA_SEX ? rom_out_le16(isa_mtw((unsigned long)(p)), (val)) \
285 : rom_out_be16(isa_mtw((unsigned long)(p)), (val)))
286 #define isa_rom_writew_raw(val, p) rom_out_be16(isa_mtw((unsigned long)(p)), (val))
287 #endif /* CONFIG_ATARI_ROM_ISA */
288
isa_delay(void)289 static inline void isa_delay(void)
290 {
291 switch(ISA_TYPE)
292 {
293 #ifdef CONFIG_Q40
294 case ISA_TYPE_Q40: isa_outb(0,0x80); break;
295 #endif
296 #ifdef CONFIG_AMIGA_PCMCIA
297 case ISA_TYPE_AG: break;
298 #endif
299 #ifdef CONFIG_ATARI_ROM_ISA
300 case ISA_TYPE_ENEC: break;
301 #endif
302 default: break; /* avoid warnings */
303 }
304 }
305
306 #define isa_inb_p(p) ({u8 v=isa_inb(p);isa_delay();v;})
307 #define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();})
308 #define isa_inw_p(p) ({u16 v=isa_inw(p);isa_delay();v;})
309 #define isa_outw_p(v,p) ({isa_outw((v),(p));isa_delay();})
310 #define isa_inl_p(p) ({u32 v=isa_inl(p);isa_delay();v;})
311 #define isa_outl_p(v,p) ({isa_outl((v),(p));isa_delay();})
312
313 #define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr))
314 #define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr))
315
316 #define isa_insw(port, buf, nr) \
317 (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
318 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
319
320 #define isa_outsw(port, buf, nr) \
321 (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
322 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
323
324 #define isa_insl(port, buf, nr) \
325 (ISA_SEX ? raw_insl(isa_itl(port), (u32 *)(buf), (nr)) : \
326 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
327
328 #define isa_outsl(port, buf, nr) \
329 (ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) : \
330 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
331
332
333 #ifdef CONFIG_ATARI_ROM_ISA
334 #define isa_rom_inb_p(p) ({ u8 _v = isa_rom_inb(p); isa_delay(); _v; })
335 #define isa_rom_inw_p(p) ({ u16 _v = isa_rom_inw(p); isa_delay(); _v; })
336 #define isa_rom_outb_p(v, p) ({ isa_rom_outb((v), (p)); isa_delay(); })
337 #define isa_rom_outw_p(v, p) ({ isa_rom_outw((v), (p)); isa_delay(); })
338
339 #define isa_rom_insb(port, buf, nr) raw_rom_insb(isa_itb(port), (u8 *)(buf), (nr))
340
341 #define isa_rom_insw(port, buf, nr) \
342 (ISA_SEX ? raw_rom_insw(isa_itw(port), (u16 *)(buf), (nr)) : \
343 raw_rom_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
344
345 #define isa_rom_outsb(port, buf, nr) raw_rom_outsb(isa_itb(port), (u8 *)(buf), (nr))
346
347 #define isa_rom_outsw(port, buf, nr) \
348 (ISA_SEX ? raw_rom_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \
349 raw_rom_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
350 #endif /* CONFIG_ATARI_ROM_ISA */
351
352 #endif /* CONFIG_ISA || CONFIG_ATARI_ROM_ISA */
353
354
355 #if defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA)
356 #define inb isa_inb
357 #define inb_p isa_inb_p
358 #define outb isa_outb
359 #define outb_p isa_outb_p
360 #define inw isa_inw
361 #define inw_p isa_inw_p
362 #define outw isa_outw
363 #define outw_p isa_outw_p
364 #define inl isa_inl
365 #define inl_p isa_inl_p
366 #define outl isa_outl
367 #define outl_p isa_outl_p
368 #define insb isa_insb
369 #define insw isa_insw
370 #define insl isa_insl
371 #define outsb isa_outsb
372 #define outsw isa_outsw
373 #define outsl isa_outsl
374 #define readb isa_readb
375 #define readw isa_readw
376 #define writeb isa_writeb
377 #define writew isa_writew
378 #endif /* CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */
379
380 #ifdef CONFIG_ATARI_ROM_ISA
381 /*
382 * kernel with both ROM port ISA and IDE compiled in, those have
383 * conflicting defs for in/out. Simply consider port < 1024
384 * ROM port ISA and everything else regular ISA for IDE. read,write defined
385 * below.
386 */
387 #define inb(port) ((port) < 1024 ? isa_rom_inb(port) : in_8(port))
388 #define inb_p(port) ((port) < 1024 ? isa_rom_inb_p(port) : in_8(port))
389 #define inw(port) ((port) < 1024 ? isa_rom_inw(port) : in_le16(port))
390 #define inw_p(port) ((port) < 1024 ? isa_rom_inw_p(port) : in_le16(port))
391 #define inl isa_inl
392 #define inl_p isa_inl_p
393
394 #define outb(val, port) ((port) < 1024 ? isa_rom_outb((val), (port)) : out_8((port), (val)))
395 #define outb_p(val, port) ((port) < 1024 ? isa_rom_outb_p((val), (port)) : out_8((port), (val)))
396 #define outw(val, port) ((port) < 1024 ? isa_rom_outw((val), (port)) : out_le16((port), (val)))
397 #define outw_p(val, port) ((port) < 1024 ? isa_rom_outw_p((val), (port)) : out_le16((port), (val)))
398 #define outl isa_outl
399 #define outl_p isa_outl_p
400
401 #define insb(port, buf, nr) ((port) < 1024 ? isa_rom_insb((port), (buf), (nr)) : isa_insb((port), (buf), (nr)))
402 #define insw(port, buf, nr) ((port) < 1024 ? isa_rom_insw((port), (buf), (nr)) : isa_insw((port), (buf), (nr)))
403 #define insl isa_insl
404 #define outsb(port, buf, nr) ((port) < 1024 ? isa_rom_outsb((port), (buf), (nr)) : isa_outsb((port), (buf), (nr)))
405 #define outsw(port, buf, nr) ((port) < 1024 ? isa_rom_outsw((port), (buf), (nr)) : isa_outsw((port), (buf), (nr)))
406 #define outsl isa_outsl
407
408 #define readb(addr) in_8(addr)
409 #define writeb(val, addr) out_8((addr), (val))
410 #define readw(addr) in_le16(addr)
411 #define writew(val, addr) out_le16((addr), (val))
412 #endif /* CONFIG_ATARI_ROM_ISA */
413
414 #if !defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA)
415 /*
416 * We need to define dummy functions for GENERIC_IOMAP support.
417 */
418 #define inb(port) 0xff
419 #define inb_p(port) 0xff
420 #define outb(val,port) ((void)0)
421 #define outb_p(val,port) ((void)0)
422 #define inw(port) 0xffff
423 #define inw_p(port) 0xffff
424 #define outw(val,port) ((void)0)
425 #define outw_p(val,port) ((void)0)
426 #define inl(port) 0xffffffffUL
427 #define inl_p(port) 0xffffffffUL
428 #define outl(val,port) ((void)0)
429 #define outl_p(val,port) ((void)0)
430
431 #define insb(port,buf,nr) ((void)0)
432 #define outsb(port,buf,nr) ((void)0)
433 #define insw(port,buf,nr) ((void)0)
434 #define outsw(port,buf,nr) ((void)0)
435 #define insl(port,buf,nr) ((void)0)
436 #define outsl(port,buf,nr) ((void)0)
437
438 /*
439 * These should be valid on any ioremap()ed region
440 */
441 #define readb(addr) in_8(addr)
442 #define writeb(val,addr) out_8((addr),(val))
443 #define readw(addr) in_le16(addr)
444 #define writew(val,addr) out_le16((addr),(val))
445
446 #endif /* !CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */
447
448 #define readl(addr) in_le32(addr)
449 #define writel(val,addr) out_le32((addr),(val))
450
451 #define readsb(port, buf, nr) raw_insb((port), (u8 *)(buf), (nr))
452 #define readsw(port, buf, nr) raw_insw((port), (u16 *)(buf), (nr))
453 #define readsl(port, buf, nr) raw_insl((port), (u32 *)(buf), (nr))
454 #define writesb(port, buf, nr) raw_outsb((port), (u8 *)(buf), (nr))
455 #define writesw(port, buf, nr) raw_outsw((port), (u16 *)(buf), (nr))
456 #define writesl(port, buf, nr) raw_outsl((port), (u32 *)(buf), (nr))
457
458 #define mmiowb()
459
ioremap(unsigned long physaddr,unsigned long size)460 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
461 {
462 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
463 }
ioremap_nocache(unsigned long physaddr,unsigned long size)464 static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
465 {
466 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
467 }
ioremap_writethrough(unsigned long physaddr,unsigned long size)468 static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
469 unsigned long size)
470 {
471 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
472 }
ioremap_fullcache(unsigned long physaddr,unsigned long size)473 static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
474 unsigned long size)
475 {
476 return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
477 }
478
memset_io(volatile void __iomem * addr,unsigned char val,int count)479 static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
480 {
481 __builtin_memset((void __force *) addr, val, count);
482 }
memcpy_fromio(void * dst,const volatile void __iomem * src,int count)483 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
484 {
485 __builtin_memcpy(dst, (void __force *) src, count);
486 }
memcpy_toio(volatile void __iomem * dst,const void * src,int count)487 static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
488 {
489 __builtin_memcpy((void __force *) dst, src, count);
490 }
491
492 #ifndef CONFIG_SUN3
493 #define IO_SPACE_LIMIT 0xffff
494 #else
495 #define IO_SPACE_LIMIT 0x0fffffff
496 #endif
497
498 #endif /* __KERNEL__ */
499
500 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
501
502 /*
503 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
504 * access
505 */
506 #define xlate_dev_mem_ptr(p) __va(p)
507
508 /*
509 * Convert a virtual cached pointer to an uncached pointer
510 */
511 #define xlate_dev_kmem_ptr(p) p
512
ioport_map(unsigned long port,unsigned int nr)513 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
514 {
515 return (void __iomem *) port;
516 }
517
ioport_unmap(void __iomem * p)518 static inline void ioport_unmap(void __iomem *p)
519 {
520 }
521
522 #endif /* _IO_H */
523