arch/sh/kernel/ioport.c

   1 /*
   2  * arch/sh/kernel/ioport.c
   3  *
   4  * Copyright (C) 2000  Niibe Yutaka
   5  * Copyright (C) 2005 - 2007 Paul Mundt
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11 #include <linux/module.h>
  12 #include <linux/io.h>
  13
  14 unsigned long sh_io_port_base __read_mostly = -1;
  15 EXPORT_SYMBOL(sh_io_port_base);
  16
  17 void __iomem *__ioport_map(unsigned long addr, unsigned int size)
  18 {
  19         if (sh_mv.mv_ioport_map)
  20                 return sh_mv.mv_ioport_map(addr, size);
  21
  22         return (void __iomem *)(addr + sh_io_port_base);
  23 }
  24 EXPORT_SYMBOL(__ioport_map);
  25
  26 void __iomem *ioport_map(unsigned long port, unsigned int nr)
  27 {
  28         void __iomem *ret;
  29
  30         ret = __ioport_map_trapped(port, nr);
  31         if (ret)
  32                 return ret;
  33
  34         return __ioport_map(port, nr);
  35 }
  36 EXPORT_SYMBOL(ioport_map);
  37
  38 void ioport_unmap(void __iomem *addr)
  39 {
  40         if (sh_mv.mv_ioport_unmap)
  41                 sh_mv.mv_ioport_unmap(addr);
  42 }
  43 EXPORT_SYMBOL(ioport_unmap);