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  1. /*
  2.  * Copyright (c) 2005 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_AS_H_
  37. #define KERN_sparc64_sun4v_AS_H_
  38.  
  39. #include <arch/mm/tte.h>
  40. #include <arch/mm/tsb.h>
  41.  
  42. #define KERNEL_ADDRESS_SPACE_SHADOWED_ARCH  1
  43.  
  44. #define KERNEL_ADDRESS_SPACE_START_ARCH     (unsigned long) 0x0000000000000000
  45. #define KERNEL_ADDRESS_SPACE_END_ARCH       (unsigned long) 0xffffffffffffffff
  46. #define USER_ADDRESS_SPACE_START_ARCH       (unsigned long) 0x0000000000000000
  47. #define USER_ADDRESS_SPACE_END_ARCH     (unsigned long) 0xffffffffffffffff
  48.  
  49. #define USTACK_ADDRESS_ARCH (0xffffffffffffffffULL - (PAGE_SIZE - 1))
  50.  
  51. #ifdef CONFIG_TSB
  52.  
  53. /**
  54.  * TTE Tag.
  55.  *
  56.  * Even though for sun4v the format of the TSB Tag states that the context
  57.  * field has 16 bits, the T1 CPU still only supports 13-bit contexts and the
  58.  * three most significant bits are always zero.
  59.  */
  60. typedef union tte_tag {
  61.     uint64_t value;
  62.     struct {
  63.         unsigned invalid : 1;   /**< Invalidated by software. */
  64.         unsigned : 2;
  65.         unsigned context : 13;  /**< Software ASID. */
  66.         unsigned : 6;
  67.         uint64_t va_tag : 42;   /**< Virtual address bits <63:22>. */
  68.     } __attribute__ ((packed));
  69. } tte_tag_t;
  70.  
  71. /** TSB entry. */
  72. typedef struct tsb_entry {
  73.     tte_tag_t tag;
  74.     tte_data_t data;
  75. } __attribute__ ((packed)) tsb_entry_t;
  76.  
  77. typedef struct {
  78.     tsb_descr_t tsb_description;
  79. } as_arch_t;
  80.  
  81. #else
  82.  
  83. typedef struct {
  84. } as_arch_t;
  85.  
  86. #endif /* CONFIG_TSB */
  87.  
  88. #include <genarch/mm/as_ht.h>
  89.  
  90. #ifdef CONFIG_TSB
  91. #include <arch/mm/tsb.h>
  92. #define as_invalidate_translation_cache(as, page, cnt) \
  93.     tsb_invalidate((as), (page), (cnt))
  94. #else
  95. #define as_invalidate_translation_cache(as, page, cnt)
  96. #endif
  97.  
  98. extern void as_arch_init(void);
  99.  
  100. #endif
  101.  
  102. /** @}
  103.  */
  104.