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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. /** @addtogroup ppc64mm
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <mm/tlb.h>
  36.  
  37.  
  38. /** Initialize Page Hash Table.
  39.  *
  40.  * Setup the Page Hash Table with no entries.
  41.  *
  42.  */
  43. void tlb_arch_init(void)
  44. {
  45.     tlb_invalidate_all();
  46. }
  47.  
  48.  
  49. void tlb_invalidate_all(void)
  50. {
  51.     asm volatile (
  52.         "tlbia\n"
  53.         "tlbsync\n"
  54.     );
  55. }
  56.  
  57.  
  58. /** Invalidate all entries in TLB that belong to specified address space.
  59.  *
  60.  * @param asid This parameter is ignored as the architecture doesn't support it.
  61.  */
  62. void tlb_invalidate_asid(asid_t asid)
  63. {
  64.     tlb_invalidate_all();
  65. }
  66.  
  67. /** Invalidate TLB entries for specified page range belonging to specified address space.
  68.  *
  69.  * @param asid This parameter is ignored as the architecture doesn't support it.
  70.  * @param page Address of the first page whose entry is to be invalidated.
  71.  * @param cnt Number of entries to invalidate.
  72.  */
  73. void tlb_invalidate_pages(asid_t asid, uintptr_t page, count_t cnt)
  74. {
  75.     tlb_invalidate_all();
  76. }
  77.  
  78.  
  79.  
  80. /** Print contents of Page Hash Table. */
  81. void tlb_print(void)
  82. {
  83. }
  84.  
  85. /** @}
  86.  */
  87.