LXR linux/arch/m68k/include/asm/raw

   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/byteorder.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
  22extern void iounmap(void __iomem *addr);
  23
  24extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
  25                       int cacheflag);
  26extern 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/*
  64 * Atari ROM port (cartridge port) ISA adapter, used for the EtherNEC NE2000
  65 * network card driver.
  66 * The ISA adapter connects address lines A9-A13 to ISA address lines A0-A4,
  67 * and hardwires the rest of the ISA addresses for a base address of 0x300.
  68 *
  69 * Data lines D8-D15 are connected to ISA data lines D0-D7 for reading.
  70 * For writes, address lines A1-A8 are latched to ISA data lines D0-D7
  71 * (meaning the bit pattern on A1-A8 can be read back as byte).
  72 *
  73 * Read and write operations are distinguished by the base address used:
  74 * reads are from the ROM A side range, writes are through the B side range
  75 * addresses (A side base + 0x10000).
  76 *
  77 * Reads and writes are byte only.
  78 *
  79 * 16 bit reads and writes are necessary for the NetUSBee adapter's USB
  80 * chipset - 16 bit words are read straight off the ROM port while 16 bit
  81 * reads are split into two byte writes. The low byte is latched to the
  82 * NetUSBee buffer by a read from the _read_ window (with the data pattern
  83 * asserted as A1-A8 address pattern). The high byte is then written to the
  84 * write range as usual, completing the write cycle.
  85 */
  86
  87#if defined(CONFIG_ATARI_ROM_ISA)
  88#define rom_in_8(addr) \
  89        ({ u16 __v = (*(__force volatile u16 *) (addr)); __v >>= 8; __v; })
  90#define rom_in_be16(addr) \
  91        ({ u16 __v = (*(__force volatile u16 *) (addr)); __v; })
  92#define rom_in_le16(addr) \
  93        ({ u16 __v = le16_to_cpu(*(__force volatile u16 *) (addr)); __v; })
  94
  95#define rom_out_8(addr, b)      \
  96        ({u8 __w, __v = (b);  u32 _addr = ((u32) (addr)); \
  97        __w = ((*(__force volatile u8 *)  ((_addr | 0x10000) + (__v<<1)))); })
  98#define rom_out_be16(addr, w)   \
  99        ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \
 100        __w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v & 0xFF)<<1)))); \
 101        __w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v >> 8)<<1)))); })
 102#define rom_out_le16(addr, w)   \
 103        ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \
 104        __w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v >> 8)<<1)))); \
 105        __w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v & 0xFF)<<1)))); })
 106
 107#define raw_rom_inb rom_in_8
 108#define raw_rom_inw rom_in_be16
 109
 110#define raw_rom_outb(val, port) rom_out_8((port), (val))
 111#define raw_rom_outw(val, port) rom_out_be16((port), (val))
 112#endif /* CONFIG_ATARI_ROM_ISA */
 113
 114static inline void raw_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len)
 115{
 116        unsigned int i;
 117
 118        for (i = 0; i < len; i++)
 119                *buf++ = in_8(port);
 120}
 121
 122static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf,
 123                             unsigned int len)
 124{
 125        unsigned int i;
 126
 127        for (i = 0; i < len; i++)
 128                out_8(port, *buf++);
 129}
 130
 131static inline void raw_insw(volatile u16 __iomem *port, u16 *buf, unsigned int nr)
 132{
 133        unsigned int tmp;
 134
 135        if (nr & 15) {
 136                tmp = (nr & 15) - 1;
 137                asm volatile (
 138                        "1: movew %2@,%0@+; dbra %1,1b"
 139                        : "=a" (buf), "=d" (tmp)
 140                        : "a" (port), "0" (buf),
 141                          "1" (tmp));
 142        }
 143        if (nr >> 4) {
 144                tmp = (nr >> 4) - 1;
 145                asm volatile (
 146                        "1: "
 147                        "movew %2@,%0@+; "
 148                        "movew %2@,%0@+; "
 149                        "movew %2@,%0@+; "
 150                        "movew %2@,%0@+; "
 151                        "movew %2@,%0@+; "
 152                        "movew %2@,%0@+; "
 153                        "movew %2@,%0@+; "
 154                        "movew %2@,%0@+; "
 155                        "movew %2@,%0@+; "
 156                        "movew %2@,%0@+; "
 157                        "movew %2@,%0@+; "
 158                        "movew %2@,%0@+; "
 159                        "movew %2@,%0@+; "
 160                        "movew %2@,%0@+; "
 161                        "movew %2@,%0@+; "
 162                        "movew %2@,%0@+; "
 163                        "dbra %1,1b"
 164                        : "=a" (buf), "=d" (tmp)
 165                        : "a" (port), "0" (buf),
 166                          "1" (tmp));
 167        }
 168}
 169
 170static inline void raw_outsw(volatile u16 __iomem *port, const u16 *buf,
 171                             unsigned int nr)
 172{
 173        unsigned int tmp;
 174
 175        if (nr & 15) {
 176                tmp = (nr & 15) - 1;
 177                asm volatile (
 178                        "1: movew %0@+,%2@; dbra %1,1b"
 179                        : "=a" (buf), "=d" (tmp)
 180                        : "a" (port), "0" (buf),
 181                          "1" (tmp));
 182        }
 183        if (nr >> 4) {
 184                tmp = (nr >> 4) - 1;
 185                asm volatile (
 186                        "1: "
 187                        "movew %0@+,%2@; "
 188                        "movew %0@+,%2@; "
 189                        "movew %0@+,%2@; "
 190                        "movew %0@+,%2@; "
 191                        "movew %0@+,%2@; "
 192                        "movew %0@+,%2@; "
 193                        "movew %0@+,%2@; "
 194                        "movew %0@+,%2@; "
 195                        "movew %0@+,%2@; "
 196                        "movew %0@+,%2@; "
 197                        "movew %0@+,%2@; "
 198                        "movew %0@+,%2@; "
 199                        "movew %0@+,%2@; "
 200                        "movew %0@+,%2@; "
 201                        "movew %0@+,%2@; "
 202                        "movew %0@+,%2@; "
 203                        "dbra %1,1b"
 204                        : "=a" (buf), "=d" (tmp)
 205                        : "a" (port), "0" (buf),
 206                          "1" (tmp));
 207        }
 208}
 209
 210static inline void raw_insl(volatile u32 __iomem *port, u32 *buf, unsigned int nr)
 211{
 212        unsigned int tmp;
 213
 214        if (nr & 15) {
 215                tmp = (nr & 15) - 1;
 216                asm volatile (
 217                        "1: movel %2@,%0@+; dbra %1,1b"
 218                        : "=a" (buf), "=d" (tmp)
 219                        : "a" (port), "0" (buf),
 220                          "1" (tmp));
 221        }
 222        if (nr >> 4) {
 223                tmp = (nr >> 4) - 1;
 224                asm volatile (
 225                        "1: "
 226                        "movel %2@,%0@+; "
 227                        "movel %2@,%0@+; "
 228                        "movel %2@,%0@+; "
 229                        "movel %2@,%0@+; "
 230                        "movel %2@,%0@+; "
 231                        "movel %2@,%0@+; "
 232                        "movel %2@,%0@+; "
 233                        "movel %2@,%0@+; "
 234                        "movel %2@,%0@+; "
 235                        "movel %2@,%0@+; "
 236                        "movel %2@,%0@+; "
 237                        "movel %2@,%0@+; "
 238                        "movel %2@,%0@+; "
 239                        "movel %2@,%0@+; "
 240                        "movel %2@,%0@+; "
 241                        "movel %2@,%0@+; "
 242                        "dbra %1,1b"
 243                        : "=a" (buf), "=d" (tmp)
 244                        : "a" (port), "0" (buf),
 245                          "1" (tmp));
 246        }
 247}
 248
 249static inline void raw_outsl(volatile u32 __iomem *port, const u32 *buf,
 250                             unsigned int nr)
 251{
 252        unsigned int tmp;
 253
 254        if (nr & 15) {
 255                tmp = (nr & 15) - 1;
 256                asm volatile (
 257                        "1: movel %0@+,%2@; dbra %1,1b"
 258                        : "=a" (buf), "=d" (tmp)
 259                        : "a" (port), "0" (buf),
 260                          "1" (tmp));
 261        }
 262        if (nr >> 4) {
 263                tmp = (nr >> 4) - 1;
 264                asm volatile (
 265                        "1: "
 266                        "movel %0@+,%2@; "
 267                        "movel %0@+,%2@; "
 268                        "movel %0@+,%2@; "
 269                        "movel %0@+,%2@; "
 270                        "movel %0@+,%2@; "
 271                        "movel %0@+,%2@; "
 272                        "movel %0@+,%2@; "
 273                        "movel %0@+,%2@; "
 274                        "movel %0@+,%2@; "
 275                        "movel %0@+,%2@; "
 276                        "movel %0@+,%2@; "
 277                        "movel %0@+,%2@; "
 278                        "movel %0@+,%2@; "
 279                        "movel %0@+,%2@; "
 280                        "movel %0@+,%2@; "
 281                        "movel %0@+,%2@; "
 282                        "dbra %1,1b"
 283                        : "=a" (buf), "=d" (tmp)
 284                        : "a" (port), "0" (buf),
 285                          "1" (tmp));
 286        }
 287}
 288
 289
 290static inline void raw_insw_swapw(volatile u16 __iomem *port, u16 *buf,
 291                                  unsigned int nr)
 292{
 293    if ((nr) % 8)
 294        __asm__ __volatile__
 295               ("\tmovel %0,%/a0\n\t"
 296                "movel %1,%/a1\n\t"
 297                "movel %2,%/d6\n\t"
 298                "subql #1,%/d6\n"
 299                "1:\tmovew %/a0@,%/d0\n\t"
 300                "rolw  #8,%/d0\n\t"
 301                "movew %/d0,%/a1@+\n\t"
 302                "dbra %/d6,1b"
 303                :
 304                : "g" (port), "g" (buf), "g" (nr)
 305                : "d0", "a0", "a1", "d6");
 306    else
 307        __asm__ __volatile__
 308               ("movel %0,%/a0\n\t"
 309                "movel %1,%/a1\n\t"
 310                "movel %2,%/d6\n\t"
 311                "lsrl  #3,%/d6\n\t"
 312                "subql #1,%/d6\n"
 313                "1:\tmovew %/a0@,%/d0\n\t"
 314                "rolw  #8,%/d0\n\t"
 315                "movew %/d0,%/a1@+\n\t"
 316                "movew %/a0@,%/d0\n\t"
 317                "rolw  #8,%/d0\n\t"
 318                "movew %/d0,%/a1@+\n\t"
 319                "movew %/a0@,%/d0\n\t"
 320                "rolw  #8,%/d0\n\t"
 321                "movew %/d0,%/a1@+\n\t"
 322                "movew %/a0@,%/d0\n\t"
 323                "rolw  #8,%/d0\n\t"
 324                "movew %/d0,%/a1@+\n\t"
 325                "movew %/a0@,%/d0\n\t"
 326                "rolw  #8,%/d0\n\t"
 327                "movew %/d0,%/a1@+\n\t"
 328                "movew %/a0@,%/d0\n\t"
 329                "rolw  #8,%/d0\n\t"
 330                "movew %/d0,%/a1@+\n\t"
 331                "movew %/a0@,%/d0\n\t"
 332                "rolw  #8,%/d0\n\t"
 333                "movew %/d0,%/a1@+\n\t"
 334                "movew %/a0@,%/d0\n\t"
 335                "rolw  #8,%/d0\n\t"
 336                "movew %/d0,%/a1@+\n\t"
 337                "dbra %/d6,1b"
 338                :
 339                : "g" (port), "g" (buf), "g" (nr)
 340                : "d0", "a0", "a1", "d6");
 341}
 342
 343static inline void raw_outsw_swapw(volatile u16 __iomem *port, const u16 *buf,
 344                                   unsigned int nr)
 345{
 346    if ((nr) % 8)
 347        __asm__ __volatile__
 348               ("movel %0,%/a0\n\t"
 349                "movel %1,%/a1\n\t"
 350                "movel %2,%/d6\n\t"
 351                "subql #1,%/d6\n"
 352                "1:\tmovew %/a1@+,%/d0\n\t"
 353                "rolw  #8,%/d0\n\t"
 354                "movew %/d0,%/a0@\n\t"
 355                "dbra %/d6,1b"
 356                :
 357                : "g" (port), "g" (buf), "g" (nr)
 358                : "d0", "a0", "a1", "d6");
 359    else
 360        __asm__ __volatile__
 361               ("movel %0,%/a0\n\t"
 362                "movel %1,%/a1\n\t"
 363                "movel %2,%/d6\n\t"
 364                "lsrl  #3,%/d6\n\t"
 365                "subql #1,%/d6\n"
 366                "1:\tmovew %/a1@+,%/d0\n\t"
 367                "rolw  #8,%/d0\n\t"
 368                "movew %/d0,%/a0@\n\t"
 369                "movew %/a1@+,%/d0\n\t"
 370                "rolw  #8,%/d0\n\t"
 371                "movew %/d0,%/a0@\n\t"
 372                "movew %/a1@+,%/d0\n\t"
 373                "rolw  #8,%/d0\n\t"
 374                "movew %/d0,%/a0@\n\t"
 375                "movew %/a1@+,%/d0\n\t"
 376                "rolw  #8,%/d0\n\t"
 377                "movew %/d0,%/a0@\n\t"
 378                "movew %/a1@+,%/d0\n\t"
 379                "rolw  #8,%/d0\n\t"
 380                "movew %/d0,%/a0@\n\t"
 381                "movew %/a1@+,%/d0\n\t"
 382                "rolw  #8,%/d0\n\t"
 383                "movew %/d0,%/a0@\n\t"
 384                "movew %/a1@+,%/d0\n\t"
 385                "rolw  #8,%/d0\n\t"
 386                "movew %/d0,%/a0@\n\t"
 387                "movew %/a1@+,%/d0\n\t"
 388                "rolw  #8,%/d0\n\t"
 389                "movew %/d0,%/a0@\n\t"
 390                "dbra %/d6,1b"
 391                :
 392                : "g" (port), "g" (buf), "g" (nr)
 393                : "d0", "a0", "a1", "d6");
 394}
 395
 396
 397#if defined(CONFIG_ATARI_ROM_ISA)
 398static inline void raw_rom_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len)
 399{
 400        unsigned int i;
 401
 402        for (i = 0; i < len; i++)
 403                *buf++ = rom_in_8(port);
 404}
 405
 406static inline void raw_rom_outsb(volatile u8 __iomem *port, const u8 *buf,
 407                             unsigned int len)
 408{
 409        unsigned int i;
 410
 411        for (i = 0; i < len; i++)
 412                rom_out_8(port, *buf++);
 413}
 414
 415static inline void raw_rom_insw(volatile u16 __iomem *port, u16 *buf,
 416                                   unsigned int nr)
 417{
 418        unsigned int i;
 419
 420        for (i = 0; i < nr; i++)
 421                *buf++ = rom_in_be16(port);
 422}
 423
 424static inline void raw_rom_outsw(volatile u16 __iomem *port, const u16 *buf,
 425                                   unsigned int nr)
 426{
 427        unsigned int i;
 428
 429        for (i = 0; i < nr; i++)
 430                rom_out_be16(port, *buf++);
 431}
 432
 433static inline void raw_rom_insw_swapw(volatile u16 __iomem *port, u16 *buf,
 434                                   unsigned int nr)
 435{
 436        unsigned int i;
 437
 438        for (i = 0; i < nr; i++)
 439                *buf++ = rom_in_le16(port);
 440}
 441
 442static inline void raw_rom_outsw_swapw(volatile u16 __iomem *port, const u16 *buf,
 443                                   unsigned int nr)
 444{
 445        unsigned int i;
 446
 447        for (i = 0; i < nr; i++)
 448                rom_out_le16(port, *buf++);
 449}
 450#endif /* CONFIG_ATARI_ROM_ISA */
 451
 452#endif /* __KERNEL__ */
 453
 454#endif /* _RAW_IO_H */
 455