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  1. /*
  2.  * Copyright (C) 2006 Martin Decky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <mm/tlb.h>
  30.  
  31.  
  32. /** Initialize Page Hash Table.
  33.  *
  34.  * Setup the Page Hash Table with no entries.
  35.  *
  36.  */
  37. void tlb_arch_init(void)
  38. {
  39.     tlb_invalidate_all();
  40. }
  41.  
  42.  
  43. void tlb_invalidate_all(void)
  44. {
  45.     asm volatile (
  46.         "tlbia\n"
  47.         "tlbsync\n"
  48.     );
  49. }
  50.  
  51.  
  52. /** Invalidate all entries in TLB that belong to specified address space.
  53.  *
  54.  * @param asid This parameter is ignored as the architecture doesn't support it.
  55.  */
  56. void tlb_invalidate_asid(asid_t asid)
  57. {
  58.     tlb_invalidate_all();
  59. }
  60.  
  61. /** Invalidate TLB entries for specified page range belonging to specified address space.
  62.  *
  63.  * @param asid This parameter is ignored as the architecture doesn't support it.
  64.  * @param page Address of the first page whose entry is to be invalidated.
  65.  * @param cnt Number of entries to invalidate.
  66.  */
  67. void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt)
  68. {
  69.     tlb_invalidate_all();
  70. }
  71.  
  72.  
  73.  
  74. /** Print contents of Page Hash Table. */
  75. void tlb_print(void)
  76. {
  77. }
  78.