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 */ 168 169 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 } 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 } 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 } 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 } 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 */ 290 291 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() 462 463 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size) 464 { 465 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); 466 } 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 472 static inline void __iomem *ioremap_wt(unsigned long physaddr, 473 unsigned long size) 474 { 475 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH); 476 } 477 static inline void __iomem *ioremap_fullcache(unsigned long physaddr, 478 unsigned long size) 479 { 480 return __ioremap(physaddr, size, IOMAP_FULL_CACHING); 481 } 482 483 static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count) 484 { 485 __builtin_memset((void __force *) addr, val, count); 486 } 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 } 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 516 517 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) 518 { 519 return (void __iomem *) port; 520 } 521 522 static inline void ioport_unmap(void __iomem *p) 523 { 524 } 525 526 #endif /* _IO_H */ 527