arch/unicore32/include/asm/io.h

   1 /*
   2  * linux/arch/unicore32/include/asm/io.h
   3  *
   4  * Code specific to PKUnity SoC and UniCore ISA
   5  *
   6  * Copyright (C) 2001-2010 GUAN Xue-tao
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12 #ifndef __UNICORE_IO_H__
  13 #define __UNICORE_IO_H__
  14
  15 #ifdef __KERNEL__
  16
  17 #include <asm/byteorder.h>
  18 #include <asm/memory.h>
  19 #include <asm/system.h>
  20
  21 #define PCI_IOBASE      PKUNITY_PCILIO_BASE
  22 #include <asm-generic/io.h>
  23
  24 /*
  25  * __uc32_ioremap and __uc32_ioremap_cached takes CPU physical address.
  26  */
  27 extern void __iomem *__uc32_ioremap(unsigned long, size_t);
  28 extern void __iomem *__uc32_ioremap_cached(unsigned long, size_t);
  29 extern void __uc32_iounmap(volatile void __iomem *addr);
  30
  31 /*
  32  * ioremap and friends.
  33  *
  34  * ioremap takes a PCI memory address, as specified in
  35  * Documentation/IO-mapping.txt.
  36  *
  37  */
  38 #define ioremap(cookie, size)           __uc32_ioremap(cookie, size)
  39 #define ioremap_cached(cookie, size)    __uc32_ioremap_cached(cookie, size)
  40 #define iounmap(cookie)                 __uc32_iounmap(cookie)
  41
  42 /*
  43  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
  44  * access
  45  */
  46 #undef xlate_dev_mem_ptr
  47 #define xlate_dev_mem_ptr(p)    __va(p)
  48
  49 #define HAVE_ARCH_PIO_SIZE
  50 #define PIO_OFFSET              (unsigned int)(PCI_IOBASE)
  51 #define PIO_MASK                (unsigned int)(IO_SPACE_LIMIT)
  52 #define PIO_RESERVED            (PIO_OFFSET + PIO_MASK + 1)
  53
  54 #endif  /* __KERNEL__ */
  55 #endif  /* __UNICORE_IO_H__ */