include/asm-m68k/io.h

   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 /* GG-II Zorro to ISA bridge */
  53 #ifdef CONFIG_GG2
  54
  55 extern unsigned long gg2_isa_base;
  56 #define GG2_ISA_IO_B(ioaddr) (gg2_isa_base+1+((unsigned long)(ioaddr)*4))
  57 #define GG2_ISA_IO_W(ioaddr) (gg2_isa_base+  ((unsigned long)(ioaddr)*4))
  58 #define GG2_ISA_MEM_B(madr)  (gg2_isa_base+1+(((unsigned long)(madr)*4) & 0xfffff))
  59 #define GG2_ISA_MEM_W(madr)  (gg2_isa_base+  (((unsigned long)(madr)*4) & 0xfffff))
  60
  61 #ifndef MULTI_ISA
  62 #define MULTI_ISA 0
  63 #else
  64 #undef MULTI_ISA
  65 #define MULTI_ISA 1
  66 #endif
  67 #endif /* GG2 */
  68
  69 #ifdef CONFIG_AMIGA_PCMCIA
  70 #include <asm/amigayle.h>
  71
  72 #define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
  73 #define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )
  74
  75 #ifndef MULTI_ISA
  76 #define MULTI_ISA 0
  77 #else
  78 #undef MULTI_ISA
  79 #define MULTI_ISA 1
  80 #endif
  81 #endif /* AMIGA_PCMCIA */
  82
  83
  84
  85 #ifdef CONFIG_ISA
  86
  87 #if MULTI_ISA == 0
  88 #undef MULTI_ISA
  89 #endif
  90
  91 #define ISA_TYPE_Q40 (1)
  92 #define ISA_TYPE_GG2 (2)
  93 #define ISA_TYPE_AG  (3)
  94
  95 #if defined(CONFIG_Q40) && !defined(MULTI_ISA)
  96 #define ISA_TYPE ISA_TYPE_Q40
  97 #define ISA_SEX  0
  98 #endif
  99 #if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
 100 #define ISA_TYPE ISA_TYPE_AG
 101 #define ISA_SEX  1
 102 #endif
 103 #if defined(CONFIG_GG2) && !defined(MULTI_ISA)
 104 #define ISA_TYPE ISA_TYPE_GG2
 105 #define ISA_SEX  0
 106 #endif
 107
 108 #ifdef MULTI_ISA
 109 extern int isa_type;
 110 extern int isa_sex;
 111
 112 #define ISA_TYPE isa_type
 113 #define ISA_SEX  isa_sex
 114 #endif
 115
 116 /*
 117  * define inline addr translation functions. Normally only one variant will
 118  * be compiled in so the case statement will be optimised away
 119  */
 120
 121 static inline u8 __iomem *isa_itb(unsigned long addr)
 122 {
 123   switch(ISA_TYPE)
 124     {
 125 #ifdef CONFIG_Q40
 126     case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_IO_B(addr);
 127 #endif
 128 #ifdef CONFIG_GG2
 129     case ISA_TYPE_GG2: return (u8 __iomem *)GG2_ISA_IO_B(addr);
 130 #endif
 131 #ifdef CONFIG_AMIGA_PCMCIA
 132     case ISA_TYPE_AG: return (u8 __iomem *)AG_ISA_IO_B(addr);
 133 #endif
 134     default: return NULL; /* avoid warnings, just in case */
 135     }
 136 }
 137 static inline u16 __iomem *isa_itw(unsigned long addr)
 138 {
 139   switch(ISA_TYPE)
 140     {
 141 #ifdef CONFIG_Q40
 142     case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_IO_W(addr);
 143 #endif
 144 #ifdef CONFIG_GG2
 145     case ISA_TYPE_GG2: return (u16 __iomem *)GG2_ISA_IO_W(addr);
 146 #endif
 147 #ifdef CONFIG_AMIGA_PCMCIA
 148     case ISA_TYPE_AG: return (u16 __iomem *)AG_ISA_IO_W(addr);
 149 #endif
 150     default: return NULL; /* avoid warnings, just in case */
 151     }
 152 }
 153 static inline u32 __iomem *isa_itl(unsigned long addr)
 154 {
 155   switch(ISA_TYPE)
 156     {
 157 #ifdef CONFIG_AMIGA_PCMCIA
 158     case ISA_TYPE_AG: return (u32 __iomem *)AG_ISA_IO_W(addr);
 159 #endif
 160     default: return 0; /* avoid warnings, just in case */
 161     }
 162 }
 163 static inline u8 __iomem *isa_mtb(unsigned long addr)
 164 {
 165   switch(ISA_TYPE)
 166     {
 167 #ifdef CONFIG_Q40
 168     case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
 169 #endif
 170 #ifdef CONFIG_GG2
 171     case ISA_TYPE_GG2: return (u8 __iomem *)GG2_ISA_MEM_B(addr);
 172 #endif
 173 #ifdef CONFIG_AMIGA_PCMCIA
 174     case ISA_TYPE_AG: return (u8 __iomem *)addr;
 175 #endif
 176     default: return NULL; /* avoid warnings, just in case */
 177     }
 178 }
 179 static inline u16 __iomem *isa_mtw(unsigned long addr)
 180 {
 181   switch(ISA_TYPE)
 182     {
 183 #ifdef CONFIG_Q40
 184     case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
 185 #endif
 186 #ifdef CONFIG_GG2
 187     case ISA_TYPE_GG2: return (u16 __iomem *)GG2_ISA_MEM_W(addr);
 188 #endif
 189 #ifdef CONFIG_AMIGA_PCMCIA
 190     case ISA_TYPE_AG: return (u16 __iomem *)addr;
 191 #endif
 192     default: return NULL; /* avoid warnings, just in case */
 193     }
 194 }
 195
 196
 197 #define isa_inb(port)      in_8(isa_itb(port))
 198 #define isa_inw(port)      (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
 199 #define isa_inl(port)      (ISA_SEX ? in_be32(isa_itl(port)) : in_le32(isa_itl(port)))
 200 #define isa_outb(val,port) out_8(isa_itb(port),(val))
 201 #define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))
 202 #define isa_outl(val,port) (ISA_SEX ? out_be32(isa_itl(port),(val)) : out_le32(isa_itl(port),(val)))
 203
 204 #define isa_readb(p)       in_8(isa_mtb((unsigned long)(p)))
 205 #define isa_readw(p)       \
 206         (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \
 207                  : in_le16(isa_mtw((unsigned long)(p))))
 208 #define isa_writeb(val,p)  out_8(isa_mtb((unsigned long)(p)),(val))
 209 #define isa_writew(val,p)  \
 210         (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val))  \
 211                  : out_le16(isa_mtw((unsigned long)(p)),(val)))
 212
 213 static inline void isa_delay(void)
 214 {
 215   switch(ISA_TYPE)
 216     {
 217 #ifdef CONFIG_Q40
 218     case ISA_TYPE_Q40: isa_outb(0,0x80); break;
 219 #endif
 220 #ifdef CONFIG_GG2
 221     case ISA_TYPE_GG2: break;
 222 #endif
 223 #ifdef CONFIG_AMIGA_PCMCIA
 224     case ISA_TYPE_AG: break;
 225 #endif
 226     default: break; /* avoid warnings */
 227     }
 228 }
 229
 230 #define isa_inb_p(p)      ({u8 v=isa_inb(p);isa_delay();v;})
 231 #define isa_outb_p(v,p)   ({isa_outb((v),(p));isa_delay();})
 232 #define isa_inw_p(p)      ({u16 v=isa_inw(p);isa_delay();v;})
 233 #define isa_outw_p(v,p)   ({isa_outw((v),(p));isa_delay();})
 234 #define isa_inl_p(p)      ({u32 v=isa_inl(p);isa_delay();v;})
 235 #define isa_outl_p(v,p)   ({isa_outl((v),(p));isa_delay();})
 236
 237 #define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr))
 238 #define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr))
 239
 240 #define isa_insw(port, buf, nr)     \
 241        (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) :    \
 242                   raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
 243
 244 #define isa_outsw(port, buf, nr)    \
 245        (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) :  \
 246                   raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)))
 247
 248 #define isa_insl(port, buf, nr)     \
 249        (ISA_SEX ? raw_insl(isa_itl(port), (u32 *)(buf), (nr)) :    \
 250                   raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
 251
 252 #define isa_outsl(port, buf, nr)    \
 253        (ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) :  \
 254                   raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
 255
 256
 257 #define inb     isa_inb
 258 #define inb_p   isa_inb_p
 259 #define outb    isa_outb
 260 #define outb_p  isa_outb_p
 261 #define inw     isa_inw
 262 #define inw_p   isa_inw_p
 263 #define outw    isa_outw
 264 #define outw_p  isa_outw_p
 265 #define inl     isa_inl
 266 #define inl_p   isa_inl_p
 267 #define outl    isa_outl
 268 #define outl_p  isa_outl_p
 269 #define insb    isa_insb
 270 #define insw    isa_insw
 271 #define insl    isa_insl
 272 #define outsb   isa_outsb
 273 #define outsw   isa_outsw
 274 #define outsl   isa_outsl
 275 #define readb   isa_readb
 276 #define readw   isa_readw
 277 #define writeb  isa_writeb
 278 #define writew  isa_writew
 279
 280 #else  /* CONFIG_ISA */
 281
 282 /*
 283  * We need to define dummy functions for GENERIC_IOMAP support.
 284  */
 285 #define inb(port)          0xff
 286 #define inb_p(port)        0xff
 287 #define outb(val,port)     ((void)0)
 288 #define outb_p(val,port)   ((void)0)
 289 #define inw(port)          0xffff
 290 #define outw(val,port)     ((void)0)
 291 #define inl(port)          0xffffffffUL
 292 #define outl(val,port)     ((void)0)
 293
 294 #define insb(port,buf,nr)  ((void)0)
 295 #define outsb(port,buf,nr) ((void)0)
 296 #define insw(port,buf,nr)  ((void)0)
 297 #define outsw(port,buf,nr) ((void)0)
 298 #define insl(port,buf,nr)  ((void)0)
 299 #define outsl(port,buf,nr) ((void)0)
 300
 301 /*
 302  * These should be valid on any ioremap()ed region
 303  */
 304 #define readb(addr)      in_8(addr)
 305 #define writeb(val,addr) out_8((addr),(val))
 306 #define readw(addr)      in_le16(addr)
 307 #define writew(val,addr) out_le16((addr),(val))
 308
 309 #endif /* CONFIG_ISA */
 310
 311 #define readl(addr)      in_le32(addr)
 312 #define writel(val,addr) out_le32((addr),(val))
 313
 314 #define mmiowb()
 315
 316 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
 317 {
 318         return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
 319 }
 320 static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
 321 {
 322         return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
 323 }
 324 static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
 325                                          unsigned long size)
 326 {
 327         return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
 328 }
 329 static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
 330                                       unsigned long size)
 331 {
 332         return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
 333 }
 334
 335 static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
 336 {
 337         __builtin_memset((void __force *) addr, val, count);
 338 }
 339 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
 340 {
 341         __builtin_memcpy(dst, (void __force *) src, count);
 342 }
 343 static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
 344 {
 345         __builtin_memcpy((void __force *) dst, src, count);
 346 }
 347
 348 #ifndef CONFIG_SUN3
 349 #define IO_SPACE_LIMIT 0xffff
 350 #else
 351 #define IO_SPACE_LIMIT 0x0fffffff
 352 #endif
 353
 354 #endif /* __KERNEL__ */
 355
 356 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED          1
 357
 358 /*
 359  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
 360  * access
 361  */
 362 #define xlate_dev_mem_ptr(p)    __va(p)
 363
 364 /*
 365  * Convert a virtual cached pointer to an uncached pointer
 366  */
 367 #define xlate_dev_kmem_ptr(p)   p
 368
 369 #endif /* _IO_H */