Subversion Repositories HelenOS

Rev

Rev 2467 | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. /*
  2.  * Copyright (c) 2006 Jakub Jermar
  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 genarchmm
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief   This is the generic page hash table interface.
  35.  */
  36.  
  37. #ifdef CONFIG_PAGE_HT
  38.  
  39. #ifndef KERN_PAGE_HT_H_
  40. #define KERN_PAGE_HT_H_
  41.  
  42. #include <arch/types.h>
  43. #include <mm/as.h>
  44. #include <mm/page.h>
  45. #include <synch/mutex.h>
  46. #include <adt/hash_table.h>
  47.  
  48. #define PAGE_HT_KEYS    2
  49. #define KEY_AS      0
  50. #define KEY_PAGE    1
  51.  
  52. #define PAGE_HT_ENTRIES_BITS    13
  53. #define PAGE_HT_ENTRIES     (1 << PAGE_HT_ENTRIES_BITS)
  54.  
  55. /* Macros for querying page hash table PTEs. */
  56. #define PTE_VALID(pte)      ((pte) != NULL)
  57. #define PTE_PRESENT(pte)    ((pte)->p != 0)
  58. #define PTE_GET_FRAME(pte)  ((pte)->frame)
  59. #define PTE_READABLE(pte)   1
  60. #define PTE_WRITABLE(pte)   ((pte)->w != 0)
  61. #define PTE_EXECUTABLE(pte) ((pte)->x != 0)
  62.  
  63. extern as_operations_t as_ht_operations;
  64. extern page_mapping_operations_t ht_mapping_operations;
  65.  
  66. extern mutex_t page_ht_lock;
  67. extern hash_table_t page_ht;
  68. extern hash_table_operations_t ht_operations;
  69.  
  70. #endif
  71.  
  72. #endif
  73.  
  74. /** @}
  75.  */
  76.