arch/h8300/mm/kmap.c

   1 /*
   2  *  linux/arch/h8300/mm/kmap.c
   3  *
   4  *  Based on
   5  *  linux/arch/m68knommu/mm/kmap.c
   6  *
   7  *  Copyright (C) 2000 Lineo, <davidm@snapgear.com>
   8  *  Copyright (C) 2000-2002 David McCullough <davidm@snapgear.com>
   9  */
  10
  11 #include <linux/mm.h>
  12 #include <linux/kernel.h>
  13 #include <linux/string.h>
  14 #include <linux/types.h>
  15 #include <linux/vmalloc.h>
  16
  17 #include <asm/setup.h>
  18 #include <asm/segment.h>
  19 #include <asm/page.h>
  20 #include <asm/pgalloc.h>
  21 #include <asm/io.h>
  22
  23 #undef DEBUG
  24
  25 #define VIRT_OFFSET (0x01000000)
  26
  27 /*
  28  * Map some physical address range into the kernel address space.
  29  */
  30 void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
  31 {
  32         return (void *)(physaddr + VIRT_OFFSET);
  33 }
  34
  35 /*
  36  * Unmap a ioremap()ed region again.
  37  */
  38 void iounmap(void *addr)
  39 {
  40 }
  41
  42 /*
  43  * __iounmap unmaps nearly everything, so be careful
  44  * it doesn't free currently pointer/page tables anymore but it
  45  * wans't used anyway and might be added later.
  46  */
  47 void __iounmap(void *addr, unsigned long size)
  48 {
  49 }
  50
  51 /*
  52  * Set new cache mode for some kernel address space.
  53  * The caller must push data for that range itself, if such data may already
  54  * be in the cache.
  55  */
  56 void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
  57 {
  58 }