arch/openrisc/include/asm/io.h

   1 /*
   2  * OpenRISC Linux
   3  *
   4  * Linux architectural port borrowing liberally from similar works of
   5  * others.  All original copyrights apply as per the original source
   6  * declaration.
   7  *
   8  * OpenRISC implementation:
   9  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
  10  * et al.
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  */
  17
  18 #ifndef __ASM_OPENRISC_IO_H
  19 #define __ASM_OPENRISC_IO_H
  20
  21 /*
  22  * PCI: can we really do 0 here if we have no port IO?
  23  */
  24 #define IO_SPACE_LIMIT          0
  25
  26 /* OpenRISC has no port IO */
  27 #define HAVE_ARCH_PIO_SIZE      1
  28 #define PIO_RESERVED            0X0UL
  29 #define PIO_OFFSET              0
  30 #define PIO_MASK                0
  31
  32 #include <asm-generic/io.h>
  33 #include <asm/pgtable.h>
  34
  35 extern void __iomem *__ioremap(phys_addr_t offset, unsigned long size,
  36                                 pgprot_t prot);
  37
  38 static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
  39 {
  40         return __ioremap(offset, size, PAGE_KERNEL);
  41 }
  42
  43 /* #define _PAGE_CI       0x002 */
  44 static inline void __iomem *ioremap_nocache(phys_addr_t offset,
  45                                              unsigned long size)
  46 {
  47         return __ioremap(offset, size,
  48                          __pgprot(pgprot_val(PAGE_KERNEL) | _PAGE_CI));
  49 }
  50
  51 extern void iounmap(void *addr);
  52 #endif