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  1. /*
  2.  * Copyright (c) 2005 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 ia64mm 
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_ia64_TLB_H_
  36. #define KERN_ia64_TLB_H_
  37.  
  38. #define tlb_arch_init()
  39. #define tlb_print()
  40.  
  41. #include <arch/mm/page.h>
  42. #include <arch/mm/asid.h>
  43. #include <arch/interrupt.h>
  44. #include <arch/types.h>
  45.  
  46. /** Data and instruction Translation Register indices. */
  47. #define DTR_KERNEL  0
  48. #define ITR_KERNEL  0
  49. #define DTR_KSTACK1 4
  50. #define DTR_KSTACK2 5
  51.  
  52. /** Portion of TLB insertion format data structure. */
  53. union tlb_entry {
  54.     uint64_t word[2];
  55.     struct {
  56.         /* Word 0 */
  57.         unsigned p : 1;         /**< Present. */
  58.         unsigned : 1;
  59.         unsigned ma : 3;        /**< Memory attribute. */
  60.         unsigned a : 1;         /**< Accessed. */
  61.         unsigned d : 1;         /**< Dirty. */
  62.         unsigned pl : 2;        /**< Privilege level. */
  63.         unsigned ar : 3;        /**< Access rights. */
  64.         unsigned long long ppn : 38;    /**< Physical Page Number, a.k.a. PFN. */
  65.         unsigned : 2;
  66.         unsigned ed : 1;
  67.         unsigned ig1 : 11;
  68.  
  69.         /* Word 1 */
  70.         unsigned : 2;
  71.         unsigned ps : 6;        /**< Page size will be 2^ps. */
  72.         unsigned key : 24;      /**< Protection key, unused. */
  73.         unsigned : 32;
  74.     } __attribute__ ((packed));
  75. } __attribute__ ((packed));
  76. typedef union tlb_entry tlb_entry_t;
  77.  
  78. extern void tc_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry, bool dtc);
  79. extern void dtc_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry);
  80. extern void itc_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry);
  81.  
  82. extern void tr_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry, bool dtr, index_t tr);
  83. extern void dtr_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry, index_t tr);
  84. extern void itr_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry, index_t tr);
  85.  
  86. extern void dtlb_kernel_mapping_insert(uintptr_t page, uintptr_t frame, bool dtr, index_t tr);
  87. extern void dtr_purge(uintptr_t page, count_t width);
  88.  
  89. extern void dtc_pte_copy(pte_t *t);
  90. extern void itc_pte_copy(pte_t *t);
  91.  
  92. extern void alternate_instruction_tlb_fault(uint64_t vector, istate_t *istate);
  93. extern void alternate_data_tlb_fault(uint64_t vector, istate_t *istate);
  94. extern void data_nested_tlb_fault(uint64_t vector, istate_t *istate);
  95. extern void data_dirty_bit_fault(uint64_t vector, istate_t *istate);
  96. extern void instruction_access_bit_fault(uint64_t vector, istate_t *istate);
  97. extern void data_access_bit_fault(uint64_t vector, istate_t *istate);
  98. extern void page_not_present(uint64_t vector, istate_t *istate);
  99.  
  100. #endif
  101.  
  102. /** @}
  103.  */
  104.