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  1. /*
  2.  * Copyright (c) 2006 Jakub Jermar
  3.  * Copyright (c) 2009 Pavel Rimsky
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /** @addtogroup sparc64mm  
  31.  * @{
  32.  */
  33. /** @file
  34.  */
  35.  
  36. #ifndef KERN_sparc64_sun4v_TSB_H_
  37. #define KERN_sparc64_sun4v_TSB_H_
  38.  
  39. /*
  40.  * TSB will claim 64K of memory, which
  41.  * is a nice number considered that it is one of
  42.  * the page sizes supported by hardware, which,
  43.  * again, is nice because TSBs need to be locked
  44.  * in TLBs - only one TLB entry will do.
  45.  */
  46. #define TSB_SIZE            3   /* when changing this, change
  47.                          * as.c as well */
  48. #define TSB_ENTRY_COUNT         (512 * (1 << TSB_SIZE))
  49.  
  50. #ifndef __ASM__
  51.  
  52. #include <typedefs.h>
  53. #include <arch/mm/tte.h>
  54. #include <arch/mm/mmu.h>
  55. #include <arch/types.h>
  56.  
  57. /** TSB description, used in hypercalls */
  58. typedef struct tsb_descr {
  59.     uint16_t page_size; /**< Page size (0 = 8K, 1 = 64K,...). */
  60.     uint16_t associativity; /**< TSB associativity (will be 1). */
  61.     uint32_t num_ttes;  /**< Number of TTEs. */
  62.     uint32_t context;   /**< Context number. */
  63.     uint32_t pgsize_mask;   /**< Equals "1 << page_size". */
  64.     uint64_t tsb_base;  /**< Real address of TSB base. */
  65.     uint64_t reserved;
  66. } __attribute__ ((packed)) tsb_descr_t;
  67.  
  68.  
  69. /* Forward declarations. */
  70. struct as;
  71. struct pte;
  72.  
  73. extern void tsb_invalidate(struct as *as, uintptr_t page, count_t pages);
  74. extern void itsb_pte_copy(struct pte *t, index_t index);
  75. extern void dtsb_pte_copy(struct pte *t, index_t index, bool ro);
  76.  
  77. #endif /* !def __ASM__ */
  78.  
  79. #endif
  80.  
  81. /** @}
  82.  */
  83.