arch/nios2nommu/mm/ioremap.c

   1 /*  linux/arch/nios2nommu/mm/ioremap.c, based on:
   2  *
   3  *  linux/arch/m68knommu/mm/kmap.c
   4  *
   5  *  Copyright (C) 2004 Microtronix Datacom Ltd.
   6  *  Copyright (C) 2000 Lineo, <davidm@lineo.com>
   7  *
   8  * All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  18  * NON INFRINGEMENT.  See the GNU General Public License for more
  19  * details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  *
  25  */
  26
  27 #include <linux/mm.h>
  28 #include <linux/kernel.h>
  29 #include <linux/string.h>
  30 #include <linux/types.h>
  31 #include <linux/slab.h>
  32 #include <linux/vmalloc.h>
  33
  34 #include <asm/setup.h>
  35 #include <asm/segment.h>
  36 #include <asm/page.h>
  37 #include <asm/pgalloc.h>
  38 #include <asm/io.h>
  39 #include <asm/system.h>
  40
  41 /*
  42  * Map some physical address range into the kernel address space.
  43  */
  44
  45 void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
  46 {
  47         return (void *)physaddr;
  48 }
  49
  50 /*
  51  * Unmap a ioremap()ed region again
  52  */
  53 void iounmap(void *addr)
  54 {
  55 }
  56
  57 /*
  58  * __iounmap unmaps nearly everything, so be careful
  59  * it doesn't free currently pointer/page tables anymore but it
  60  * wans't used anyway and might be added later.
  61  */
  62 void __iounmap(void *addr, unsigned long size)
  63 {
  64 }
  65