kmap.c 1.3 KB

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  1. /* kmap.c: ioremapping handlers
  2. *
  3. * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
  4. * Written by David Howells (dhowells@redhat.com)
  5. * - Derived from arch/m68k/mm/kmap.c
  6. *
  7. * This program is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU General Public License
  9. * as published by the Free Software Foundation; either version
  10. * 2 of the License, or (at your option) any later version.
  11. */
  12. #include <linux/mm.h>
  13. #include <linux/kernel.h>
  14. #include <linux/string.h>
  15. #include <linux/types.h>
  16. #include <linux/vmalloc.h>
  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. #undef DEBUG
  23. /*****************************************************************************/
  24. /*
  25. * Map some physical address range into the kernel address space.
  26. */
  27. void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
  28. {
  29. return (void __iomem *)physaddr;
  30. }
  31. /*
  32. * Unmap a ioremap()ed region again
  33. */
  34. void iounmap(void volatile __iomem *addr)
  35. {
  36. }
  37. /*
  38. * Set new cache mode for some kernel address space.
  39. * The caller must push data for that range itself, if such data may already
  40. * be in the cache.
  41. */
  42. void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
  43. {
  44. }