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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 sparc64mm  
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_sparc64_FRAME_H_
  36. #define KERN_sparc64_FRAME_H_
  37.  
  38. /*
  39.  * Page size supported by the MMU.
  40.  * For 8K there is the nasty illegal virtual aliasing problem.
  41.  * Therefore, the kernel uses 8K only internally on the TLB and TSB levels.
  42.  */
  43. #define MMU_FRAME_WIDTH     13  /* 8K */
  44. #define MMU_FRAME_SIZE      (1 << MMU_FRAME_WIDTH)
  45.  
  46. /*
  47.  * Page size exported to the generic memory management subsystems.
  48.  * This page size is not directly supported by the MMU, but we can emulate
  49.  * each 16K page with a pair of adjacent 8K pages.
  50.  */
  51. #define FRAME_WIDTH     14  /* 16K */
  52. #define FRAME_SIZE      (1 << FRAME_WIDTH)
  53.  
  54. #ifdef KERNEL
  55. #ifndef __ASM__
  56.  
  57. #include <arch/types.h>
  58.  
  59. union frame_address {
  60.     uintptr_t address;
  61.     struct {
  62. #if defined (US)
  63.         unsigned : 23;
  64.         uint64_t pfn : 28;      /**< Physical Frame Number. */
  65. #elif defined (US3)
  66.         unsigned : 21;
  67.         uint64_t pfn : 30;      /**< Physical Frame Number. */
  68. #endif
  69.         unsigned offset : 13;       /**< Offset. */
  70.     } __attribute__ ((packed));
  71. };
  72.  
  73. typedef union frame_address frame_address_t;
  74.  
  75. extern uintptr_t last_frame;
  76. extern uintptr_t end_of_identity;
  77.  
  78. extern void frame_arch_init(void);
  79. #define physmem_print()
  80.  
  81. #endif
  82. #endif
  83.  
  84. #endif
  85.  
  86. /** @}
  87.  */
  88.