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 #include <asm/system.h>
  23
  24 #undef DEBUG
  25
  26 #define VIRT_OFFSET (0x01000000)
  27
  28 /*
  29  * Map some physical address range into the kernel address space.
  30  */
  31 void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
  32 {
  33         return (void *)(physaddr + VIRT_OFFSET);
  34 }
  35
  36 /*
  37  * Unmap a ioremap()ed region again.
  38  */
  39 void iounmap(void *addr)
  40 {
  41 }
  42
  43 /*
  44  * __iounmap unmaps nearly everything, so be careful
  45  * it doesn't free currently pointer/page tables anymore but it
  46  * wans't used anyway and might be added later.
  47  */
  48 void __iounmap(void *addr, unsigned long size)
  49 {
  50 }
  51
  52 /*
  53  * Set new cache mode for some kernel address space.
  54  * The caller must push data for that range itself, if such data may already
  55  * be in the cache.
  56  */
  57 void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
  58 {
  59 }