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  1. /*
  2. * Copyright (C) 2006 Jakub Vana
  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.  
  36. #include <arch/mm/vhpt.h>
  37. #include <mm/frame.h>
  38. #include <print.h>
  39.  
  40.  
  41. static vhpt_entry_t* vhpt_base;
  42.  
  43. __address vhpt_set_up(void)
  44. {
  45.     vhpt_base = frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA | FRAME_ATOMIC);
  46.     if(!vhpt_base)
  47.         panic("Kernel configured with VHPT but no memory for table.");
  48.     vhpt_invalidate_all();
  49.     return (__address) vhpt_base;
  50. }
  51.  
  52.  
  53. void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry)
  54. {
  55.     region_register rr_save, rr;
  56.     index_t vrn;
  57.     rid_t rid;
  58.     __u64 tag;
  59.  
  60.     vhpt_entry_t *ventry;
  61.  
  62.  
  63.     vrn = va >> VRN_SHIFT;
  64.     rid = ASID2RID(asid, vrn);
  65.                                                                                                                
  66.   rr_save.word = rr_read(vrn);
  67.   rr.word = rr_save.word;
  68.   rr.map.rid = rid;
  69.   rr_write(vrn, rr.word);
  70.   srlz_i();
  71.    
  72.     ventry = (vhpt_entry_t *) thash(va);
  73.   tag = ttag(va);
  74.   rr_write(vrn, rr_save.word);
  75.   srlz_i();
  76.   srlz_d();
  77.  
  78.     ventry->word[0]=entry.word[0];
  79.     ventry->word[1]=entry.word[1];
  80.     ventry->present.tag.tag_word = tag;
  81.    
  82.  
  83. }
  84.  
  85. void vhpt_invalidate_all()
  86. {
  87.     memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0);
  88. }
  89.  
  90. void vhpt_invalidate_asid(asid_t asid)
  91. {
  92.     vhpt_invalidate_all();
  93. }
  94.  
  95.  
  96.  
  97.  /** @}
  98.  */
  99.  
  100.