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 #include <asm/io_trapped.h>
  11
  12 unsigned long sh_io_port_base __read_mostly = -1;
  13 EXPORT_SYMBOL(sh_io_port_base);
  14
  15 void __iomem *__ioport_map(unsigned long addr, unsigned int size)
  16 {
  17         if (sh_mv.mv_ioport_map)
  18                 return sh_mv.mv_ioport_map(addr, size);
  19
  20         return (void __iomem *)(addr + sh_io_port_base);
  21 }
  22 EXPORT_SYMBOL(__ioport_map);
  23
  24 void __iomem *ioport_map(unsigned long port, unsigned int nr)
  25 {
  26         void __iomem *ret;
  27
  28         ret = __ioport_map_trapped(port, nr);
  29         if (ret)
  30                 return ret;
  31
  32         return __ioport_map(port, nr);
  33 }
  34 EXPORT_SYMBOL(ioport_map);
  35
  36 void ioport_unmap(void __iomem *addr)
  37 {
  38         if (sh_mv.mv_ioport_unmap)
  39                 sh_mv.mv_ioport_unmap(addr);
  40 }
  41 EXPORT_SYMBOL(ioport_unmap);