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  1. /*
  2.  * Copyright (c) 2001-2004 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 genericmm
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_PAGE_H_
  36. #define KERN_PAGE_H_
  37.  
  38. #include <arch/types.h>
  39. #include <mm/as.h>
  40. #include <memstr.h>
  41.  
  42. /**
  43.  * Macro for computing page color.
  44.  */
  45. #define PAGE_COLOR(va)  (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1))
  46.  
  47. /** Operations to manipulate page mappings. */
  48. typedef struct {
  49.     void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame,
  50.         int flags);
  51.     void (* mapping_remove)(as_t *as, uintptr_t page);
  52.     pte_t *(* mapping_find)(as_t *as, uintptr_t page);
  53. } page_mapping_operations_t;
  54.  
  55. extern page_mapping_operations_t *page_mapping_operations;
  56.  
  57. extern void page_init(void);
  58. extern void page_table_lock(as_t *as, bool lock);
  59. extern void page_table_unlock(as_t *as, bool unlock);
  60. extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame,
  61.     int flags);
  62. extern void page_mapping_remove(as_t *as, uintptr_t page);
  63. extern pte_t *page_mapping_find(as_t *as, uintptr_t page);
  64. extern pte_t *page_table_create(int flags);
  65. extern void page_table_destroy(pte_t *page_table);
  66. extern void map_structure(uintptr_t s, size_t size);
  67. extern uintptr_t hw_map(uintptr_t physaddr, size_t size);
  68.  
  69. #endif
  70.  
  71. /** @}
  72.  */
  73.