arch/sh/kernel/ioport.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/sh/kernel/ioport.c
   4  *
   5  * Copyright (C) 2000  Niibe Yutaka
   6  * Copyright (C) 2005 - 2007 Paul Mundt
   7  */
   8 #include <linux/module.h>
   9 #include <linux/io.h>
  10
  11 unsigned long sh_io_port_base __read_mostly = -1;
  12 EXPORT_SYMBOL(sh_io_port_base);
  13
  14 void __iomem *__ioport_map(unsigned long addr, unsigned int size)
  15 {
  16         if (sh_mv.mv_ioport_map)
  17                 return sh_mv.mv_ioport_map(addr, size);
  18
  19         return (void __iomem *)(addr + sh_io_port_base);
  20 }
  21 EXPORT_SYMBOL(__ioport_map);
  22
  23 void __iomem *ioport_map(unsigned long port, unsigned int nr)
  24 {
  25         void __iomem *ret;
  26
  27         ret = __ioport_map_trapped(port, nr);
  28         if (ret)
  29                 return ret;
  30
  31         return __ioport_map(port, nr);
  32 }
  33 EXPORT_SYMBOL(ioport_map);
  34
  35 void ioport_unmap(void __iomem *addr)
  36 {
  37         if (sh_mv.mv_ioport_unmap)
  38                 sh_mv.mv_ioport_unmap(addr);
  39 }
  40 EXPORT_SYMBOL(ioport_unmap);