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/slab.h>
  16 #include <linux/vmalloc.h>
  17
  18 #include <asm/setup.h>
  19 #include <asm/segment.h>
  20 #include <asm/page.h>
  21 #include <asm/pgalloc.h>
  22 #include <asm/io.h>
  23 #include <asm/system.h>
  24
  25 #undef DEBUG
  26
  27 #define VIRT_OFFSET (0x01000000)
  28
  29 /*
  30  * Map some physical address range into the kernel address space.
  31  */
  32 void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
  33 {
  34         return (void *)(physaddr + VIRT_OFFSET);
  35 }
  36
  37 /*
  38  * Unmap a ioremap()ed region again.
  39  */
  40 void iounmap(void *addr)
  41 {
  42 }
  43
  44 /*
  45  * __iounmap unmaps nearly everything, so be careful
  46  * it doesn't free currently pointer/page tables anymore but it
  47  * wans't used anyway and might be added later.
  48  */
  49 void __iounmap(void *addr, unsigned long size)
  50 {
  51 }
  52
  53 /*
  54  * Set new cache mode for some kernel address space.
  55  * The caller must push data for that range itself, if such data may already
  56  * be in the cache.
  57  */
  58 void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
  59 {
  60 }