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   1 /*
   2  * linux/include/asm-m68k/raw_io.h
   3  *
   4  * 10/20/00 RZ: - created from bits of io.h and ide.h to cleanup namespace
   5  *
   6  */
   7
   8 #ifndef _RAW_IO_H
   9 #define _RAW_IO_H
  10
  11 #ifdef __KERNEL__
  12
  13 #include <asm/types.h>
  14
  15
  16 /* Values for nocacheflag and cmode */
  17 #define IOMAP_FULL_CACHING              0
  18 #define IOMAP_NOCACHE_SER               1
  19 #define IOMAP_NOCACHE_NONSER            2
  20 #define IOMAP_WRITETHROUGH              3
  21
  22 extern void iounmap(void __iomem *addr);
  23
  24 extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
  25                        int cacheflag);
  26 extern void __iounmap(void *addr, unsigned long size);
  27
  28
  29 /* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
  30  * two accesses to memory, which may be undesirable for some devices.
  31  */
  32 #define in_8(addr) \
  33     ({ u8 __v = (*(__force volatile u8 *) (addr)); __v; })
  34 #define in_be16(addr) \
  35     ({ u16 __v = (*(__force volatile u16 *) (addr)); __v; })
  36 #define in_be32(addr) \
  37     ({ u32 __v = (*(__force volatile u32 *) (addr)); __v; })
  38 #define in_le16(addr) \
  39     ({ u16 __v = le16_to_cpu(*(__force volatile __le16 *) (addr)); __v; })
  40 #define in_le32(addr) \
  41     ({ u32 __v = le32_to_cpu(*(__force volatile __le32 *) (addr)); __v; })
  42
  43 #define out_8(addr,b) (void)((*(__force volatile u8 *) (addr)) = (b))
  44 #define out_be16(addr,w) (void)((*(__force volatile u16 *) (addr)) = (w))
  45 #define out_be32(addr,l) (void)((*(__force volatile u32 *) (addr)) = (l))
  46 #define out_le16(addr,w) (void)((*(__force volatile __le16 *) (addr)) = cpu_to_le16(w))
  47 #define out_le32(addr,l) (void)((*(__force volatile __le32 *) (addr)) = cpu_to_le32(l))
  48
  49 #define raw_inb in_8
  50 #define raw_inw in_be16
  51 #define raw_inl in_be32
  52 #define __raw_readb in_8
  53 #define __raw_readw in_be16
  54 #define __raw_readl in_be32
  55
  56 #define raw_outb(val,port) out_8((port),(val))
  57 #define raw_outw(val,port) out_be16((port),(val))
  58 #define raw_outl(val,port) out_be32((port),(val))
  59 #define __raw_writeb(val,addr) out_8((addr),(val))
  60 #define __raw_writew(val,addr) out_be16((addr),(val))
  61 #define __raw_writel(val,addr) out_be32((addr),(val))
  62
  63 static inline void raw_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len)
  64 {
  65         unsigned int i;
  66
  67         for (i = 0; i < len; i++)
  68                 *buf++ = in_8(port);
  69 }
  70
  71 static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf,
  72                              unsigned int len)
  73 {
  74         unsigned int i;
  75
  76         for (i = 0; i < len; i++)
  77                 out_8(port, *buf++);
  78 }
  79
  80 static inline void raw_insw(volatile u16 __iomem *port, u16 *buf, unsigned int nr)
  81 {
  82         unsigned int tmp;
  83
  84         if (nr & 15) {
  85                 tmp = (nr & 15) - 1;
  86                 asm volatile (
  87                         "1: movew %2@,%0@+; dbra %1,1b"
  88                         : "=a" (buf), "=d" (tmp)
  89                         : "a" (port), "0" (buf),
  90                           "1" (tmp));
  91         }
  92         if (nr >> 4) {
  93                 tmp = (nr >> 4) - 1;
  94                 asm volatile (
  95                         "1: "
  96                         "movew %2@,%0@+; "
  97                         "movew %2@,%0@+; "
  98                         "movew %2@,%0@+; "
  99                         "movew %2@,%0@+; "
 100                         "movew %2@,%0@+; "
 101                         "movew %2@,%0@+; "
 102                         "movew %2@,%0@+; "
 103                         "movew %2@,%0@+; "
 104                         "movew %2@,%0@+; "
 105                         "movew %2@,%0@+; "
 106                         "movew %2@,%0@+; "
 107                         "movew %2@,%0@+; "
 108                         "movew %2@,%0@+; "
 109                         "movew %2@,%0@+; "
 110                         "movew %2@,%0@+; "
 111                         "movew %2@,%0@+; "
 112                         "dbra %1,1b"
 113                         : "=a" (buf), "=d" (tmp)
 114                         : "a" (port), "0" (buf),
 115                           "1" (tmp));
 116         }
 117 }
 118
 119 static inline void raw_outsw(volatile u16 __iomem *port, const u16 *buf,
 120                              unsigned int nr)
 121 {
 122         unsigned int tmp;
 123
 124         if (nr & 15) {
 125                 tmp = (nr & 15) - 1;
 126                 asm volatile (
 127                         "1: movew %0@+,%2@; dbra %1,1b"
 128                         : "=a" (buf), "=d" (tmp)
 129                         : "a" (port), "0" (buf),
 130                           "1" (tmp));
 131         }
 132         if (nr >> 4) {
 133                 tmp = (nr >> 4) - 1;
 134                 asm volatile (
 135                         "1: "
 136                         "movew %0@+,%2@; "
 137                         "movew %0@+,%2@; "
 138                         "movew %0@+,%2@; "
 139                         "movew %0@+,%2@; "
 140                         "movew %0@+,%2@; "
 141                         "movew %0@+,%2@; "
 142                         "movew %0@+,%2@; "
 143                         "movew %0@+,%2@; "
 144                         "movew %0@+,%2@; "
 145                         "movew %0@+,%2@; "
 146                         "movew %0@+,%2@; "
 147                         "movew %0@+,%2@; "
 148                         "movew %0@+,%2@; "
 149                         "movew %0@+,%2@; "
 150                         "movew %0@+,%2@; "
 151                         "movew %0@+,%2@; "
 152                         "dbra %1,1b"
 153                         : "=a" (buf), "=d" (tmp)
 154                         : "a" (port), "0" (buf),
 155                           "1" (tmp));
 156         }
 157 }
 158
 159 static inline void raw_insl(volatile u32 __iomem *port, u32 *buf, unsigned int nr)
 160 {
 161         unsigned int tmp;
 162
 163         if (nr & 15) {
 164                 tmp = (nr & 15) - 1;
 165                 asm volatile (
 166                         "1: movel %2@,%0@+; dbra %1,1b"
 167                         : "=a" (buf), "=d" (tmp)
 168                         : "a" (port), "0" (buf),
 169                           "1" (tmp));
 170         }
 171         if (nr >> 4) {
 172                 tmp = (nr >> 4) - 1;
 173                 asm volatile (
 174                         "1: "
 175                         "movel %2@,%0@+; "
 176                         "movel %2@,%0@+; "
 177                         "movel %2@,%0@+; "
 178                         "movel %2@,%0@+; "
 179                         "movel %2@,%0@+; "
 180                         "movel %2@,%0@+; "
 181                         "movel %2@,%0@+; "
 182                         "movel %2@,%0@+; "
 183                         "movel %2@,%0@+; "
 184                         "movel %2@,%0@+; "
 185                         "movel %2@,%0@+; "
 186                         "movel %2@,%0@+; "
 187                         "movel %2@,%0@+; "
 188                         "movel %2@,%0@+; "
 189                         "movel %2@,%0@+; "
 190                         "movel %2@,%0@+; "
 191                         "dbra %1,1b"
 192                         : "=a" (buf), "=d" (tmp)
 193                         : "a" (port), "0" (buf),
 194                           "1" (tmp));
 195         }
 196 }
 197
 198 static inline void raw_outsl(volatile u32 __iomem *port, const u32 *buf,
 199                              unsigned int nr)
 200 {
 201         unsigned int tmp;
 202
 203         if (nr & 15) {
 204                 tmp = (nr & 15) - 1;
 205                 asm volatile (
 206                         "1: movel %0@+,%2@; dbra %1,1b"
 207                         : "=a" (buf), "=d" (tmp)
 208                         : "a" (port), "0" (buf),
 209                           "1" (tmp));
 210         }
 211         if (nr >> 4) {
 212                 tmp = (nr >> 4) - 1;
 213                 asm volatile (
 214                         "1: "
 215                         "movel %0@+,%2@; "
 216                         "movel %0@+,%2@; "
 217                         "movel %0@+,%2@; "
 218                         "movel %0@+,%2@; "
 219                         "movel %0@+,%2@; "
 220                         "movel %0@+,%2@; "
 221                         "movel %0@+,%2@; "
 222                         "movel %0@+,%2@; "
 223                         "movel %0@+,%2@; "
 224                         "movel %0@+,%2@; "
 225                         "movel %0@+,%2@; "
 226                         "movel %0@+,%2@; "
 227                         "movel %0@+,%2@; "
 228                         "movel %0@+,%2@; "
 229                         "movel %0@+,%2@; "
 230                         "movel %0@+,%2@; "
 231                         "dbra %1,1b"
 232                         : "=a" (buf), "=d" (tmp)
 233                         : "a" (port), "0" (buf),
 234                           "1" (tmp));
 235         }
 236 }
 237
 238
 239 static inline void raw_insw_swapw(volatile u16 __iomem *port, u16 *buf,
 240                                   unsigned int nr)
 241 {
 242     if ((nr) % 8)
 243         __asm__ __volatile__
 244                ("\tmovel %0,%/a0\n\t"
 245                 "movel %1,%/a1\n\t"
 246                 "movel %2,%/d6\n\t"
 247                 "subql #1,%/d6\n"
 248                 "1:\tmovew %/a0@,%/d0\n\t"
 249                 "rolw  #8,%/d0\n\t"
 250                 "movew %/d0,%/a1@+\n\t"
 251                 "dbra %/d6,1b"
 252                 :
 253                 : "g" (port), "g" (buf), "g" (nr)
 254                 : "d0", "a0", "a1", "d6");
 255     else
 256         __asm__ __volatile__
 257                ("movel %0,%/a0\n\t"
 258                 "movel %1,%/a1\n\t"
 259                 "movel %2,%/d6\n\t"
 260                 "lsrl  #3,%/d6\n\t"
 261                 "subql #1,%/d6\n"
 262                 "1:\tmovew %/a0@,%/d0\n\t"
 263                 "rolw  #8,%/d0\n\t"
 264                 "movew %/d0,%/a1@+\n\t"
 265                 "movew %/a0@,%/d0\n\t"
 266                 "rolw  #8,%/d0\n\t"
 267                 "movew %/d0,%/a1@+\n\t"
 268                 "movew %/a0@,%/d0\n\t"
 269                 "rolw  #8,%/d0\n\t"
 270                 "movew %/d0,%/a1@+\n\t"
 271                 "movew %/a0@,%/d0\n\t"
 272                 "rolw  #8,%/d0\n\t"
 273                 "movew %/d0,%/a1@+\n\t"
 274                 "movew %/a0@,%/d0\n\t"
 275                 "rolw  #8,%/d0\n\t"
 276                 "movew %/d0,%/a1@+\n\t"
 277                 "movew %/a0@,%/d0\n\t"
 278                 "rolw  #8,%/d0\n\t"
 279                 "movew %/d0,%/a1@+\n\t"
 280                 "movew %/a0@,%/d0\n\t"
 281                 "rolw  #8,%/d0\n\t"
 282                 "movew %/d0,%/a1@+\n\t"
 283                 "movew %/a0@,%/d0\n\t"
 284                 "rolw  #8,%/d0\n\t"
 285                 "movew %/d0,%/a1@+\n\t"
 286                 "dbra %/d6,1b"
 287                 :
 288                 : "g" (port), "g" (buf), "g" (nr)
 289                 : "d0", "a0", "a1", "d6");
 290 }
 291
 292 static inline void raw_outsw_swapw(volatile u16 __iomem *port, const u16 *buf,
 293                                    unsigned int nr)
 294 {
 295     if ((nr) % 8)
 296         __asm__ __volatile__
 297                ("movel %0,%/a0\n\t"
 298                 "movel %1,%/a1\n\t"
 299                 "movel %2,%/d6\n\t"
 300                 "subql #1,%/d6\n"
 301                 "1:\tmovew %/a1@+,%/d0\n\t"
 302                 "rolw  #8,%/d0\n\t"
 303                 "movew %/d0,%/a0@\n\t"
 304                 "dbra %/d6,1b"
 305                 :
 306                 : "g" (port), "g" (buf), "g" (nr)
 307                 : "d0", "a0", "a1", "d6");
 308     else
 309         __asm__ __volatile__
 310                ("movel %0,%/a0\n\t"
 311                 "movel %1,%/a1\n\t"
 312                 "movel %2,%/d6\n\t"
 313                 "lsrl  #3,%/d6\n\t"
 314                 "subql #1,%/d6\n"
 315                 "1:\tmovew %/a1@+,%/d0\n\t"
 316                 "rolw  #8,%/d0\n\t"
 317                 "movew %/d0,%/a0@\n\t"
 318                 "movew %/a1@+,%/d0\n\t"
 319                 "rolw  #8,%/d0\n\t"
 320                 "movew %/d0,%/a0@\n\t"
 321                 "movew %/a1@+,%/d0\n\t"
 322                 "rolw  #8,%/d0\n\t"
 323                 "movew %/d0,%/a0@\n\t"
 324                 "movew %/a1@+,%/d0\n\t"
 325                 "rolw  #8,%/d0\n\t"
 326                 "movew %/d0,%/a0@\n\t"
 327                 "movew %/a1@+,%/d0\n\t"
 328                 "rolw  #8,%/d0\n\t"
 329                 "movew %/d0,%/a0@\n\t"
 330                 "movew %/a1@+,%/d0\n\t"
 331                 "rolw  #8,%/d0\n\t"
 332                 "movew %/d0,%/a0@\n\t"
 333                 "movew %/a1@+,%/d0\n\t"
 334                 "rolw  #8,%/d0\n\t"
 335                 "movew %/d0,%/a0@\n\t"
 336                 "movew %/a1@+,%/d0\n\t"
 337                 "rolw  #8,%/d0\n\t"
 338                 "movew %/d0,%/a0@\n\t"
 339                 "dbra %/d6,1b"
 340                 :
 341                 : "g" (port), "g" (buf), "g" (nr)
 342                 : "d0", "a0", "a1", "d6");
 343 }
 344
 345 #endif /* __KERNEL__ */
 346
 347 #endif /* _RAW_IO_H */