target/linux/ubicom32/files/arch/ubicom32/mm/kmap.c

   1 /*
   2  * arch/ubicom32/mm/kmap.c
   3  *   Ubicom32 architecture non-mmu ioremap and friends implementation.
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  * Copyright (C) 2000 Lineo, <davidm@snapgear.com>
   7  * Copyright (C) 2000-2002 David McCullough <davidm@snapgear.com>
   8  *
   9  * This file is part of the Ubicom32 Linux Kernel Port.
  10  *
  11  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  12  * it and/or modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation, either version 2 of the
  14  * License, or (at your option) any later version.
  15  *
  16  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  17  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  18  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  19  * the GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with the Ubicom32 Linux Kernel Port.  If not,
  23  * see <http://www.gnu.org/licenses/>.
  24  *
  25  * Ubicom32 implementation derived from (with many thanks):
  26  *   arch/m68knommu
  27  *   arch/blackfin
  28  *   arch/parisc
  29  */
  30
  31 #include <linux/module.h>
  32 #include <linux/mm.h>
  33 #include <linux/kernel.h>
  34 #include <linux/string.h>
  35 #include <linux/types.h>
  36 #include <linux/slab.h>
  37 #include <linux/vmalloc.h>
  38
  39 #include <asm/setup.h>
  40 #include <asm/segment.h>
  41 #include <asm/page.h>
  42 #include <asm/pgalloc.h>
  43 #include <asm/io.h>
  44 #include <asm/system.h>
  45
  46 #undef DEBUG
  47
  48 /*
  49  * Map some physical address range into the kernel address space.
  50  */
  51 void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
  52 {
  53         return (void *)physaddr;
  54 }
  55
  56 /*
  57  * Unmap a ioremap()ed region again.
  58  */
  59 void iounmap(void *addr)
  60 {
  61 }
  62
  63 /*
  64  * __iounmap unmaps nearly everything, so be careful
  65  * it doesn't free currently pointer/page tables anymore but it
  66  * wans't used anyway and might be added later.
  67  */
  68 void __iounmap(void *addr, unsigned long size)
  69 {
  70 }
  71
  72 /*
  73  * Set new cache mode for some kernel address space.
  74  * The caller must push data for that range itself, if such data may already
  75  * be in the cache.
  76  */
  77 void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
  78 {
  79 }