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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 ppc32mm
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_ppc32_TLB_H_
  36. #define KERN_ppc32_TLB_H_
  37.  
  38. #include <arch/interrupt.h>
  39. #include <arch/types.h>
  40. #include <typedefs.h>
  41.  
  42. #define WIMG_GUARDED    0x01
  43. #define WIMG_COHERENT   0x02
  44. #define WIMG_NO_CACHE   0x04
  45. #define WIMG_WRITETHRU  0x08
  46.  
  47. typedef struct {
  48.     unsigned v : 1;          /**< Valid */
  49.     unsigned vsid : 24;      /**< Virtual Segment ID */
  50.     unsigned h : 1;          /**< Primary/secondary hash */
  51.     unsigned api : 6;        /**< Abbreviated Page Index */
  52.     unsigned rpn : 20;       /**< Real Page Number */
  53.     unsigned reserved0 : 3;
  54.     unsigned r : 1;          /**< Reference */
  55.     unsigned c : 1;          /**< Change */
  56.     unsigned wimg : 4;       /**< Access control */
  57.     unsigned reserved1 : 1;
  58.     unsigned pp : 2;         /**< Page protection */
  59. } phte_t;
  60.  
  61. typedef struct {
  62.     unsigned v : 1;
  63.     unsigned vsid : 24;
  64.     unsigned reserved0 : 1;
  65.     unsigned api : 6;
  66. } ptehi_t;
  67.  
  68. typedef struct {
  69.     unsigned rpn : 20;
  70.     unsigned xpn : 3;
  71.     unsigned reserved0 : 1;
  72.     unsigned c : 1;
  73.     unsigned wimg : 4;
  74.     unsigned x : 1;
  75.     unsigned pp : 2;
  76. } ptelo_t;
  77.  
  78. extern void pht_init(void);
  79. extern void pht_refill(int n, istate_t *istate);
  80. extern bool pht_refill_real(int n, istate_t *istate) __attribute__ ((section("K_UNMAPPED_TEXT_START")));
  81. extern void tlb_refill_real(int n, uint32_t tlbmiss, ptehi_t ptehi, ptelo_t ptelo, istate_t *istate) __attribute__ ((section("K_UNMAPPED_TEXT_START")));
  82.  
  83. #endif
  84.  
  85. /** @}
  86.  */
  87.