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  1. /*
  2.  * Copyright (C) 2006 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. #include <arch/mm/page.h>
  30. #include <arch/types.h>
  31. #include <genarch/mm/page_ht.h>
  32. #include <print.h>
  33. #include <mm/page.h>
  34. #include <config.h>
  35. #include <panic.h>
  36.  
  37. __u64 thash(__u64 va);
  38. __u64 thash(__u64 va)
  39. {
  40.     __u64 ret;
  41.     asm
  42.     (
  43.         "thash %0=%1;;"
  44.         :"=r"(ret)
  45.         :"r" (va)
  46.     );
  47.    
  48.     return ret;
  49. }
  50.  
  51. __u64 ttag(__u64 va);
  52. __u64 ttag(__u64 va)
  53. {
  54.     __u64 ret;
  55.     asm
  56.     (
  57.         "ttag %0=%1;;"
  58.         :"=r"(ret)
  59.         :"r" (va)
  60.     );
  61.    
  62.     return ret;
  63. }
  64.  
  65.  
  66. static void set_VHPT_environment(void)
  67. {
  68.    
  69.  
  70.     /*
  71.     TODO:
  72.     */
  73.    
  74.     int i;
  75.    
  76.     /* First set up REGION REGISTER 0 */
  77.    
  78.     region_register rr;
  79.     rr.map.ve=0;                  /*Disable Walker*/
  80.     rr.map.ps=PAGE_WIDTH;
  81.     rr.map.rid=REGION_RID_MAIN;
  82.    
  83.     asm
  84.     (
  85.         ";;\n"
  86.         "srlz.i;;\n"
  87.         "srlz.d;;\n"
  88.         "{mov rr[r0]=%0};;\n"
  89.         "srlz.i;;\n"
  90.         "srlz.d;;\n"
  91.         ";;\n"
  92.         :
  93.         :"r"(rr.word)
  94.     );
  95.  
  96.            
  97.     /* And Invalidate the rest of REGION REGISTERS */
  98.     for(i=1;i<REGION_REGISTERS;i++)
  99.     {
  100.         rr.map.rid=REGION_RID_FIRST_INVALID+i-1;
  101.         asm
  102.         (
  103.             ";;\n"
  104. /*          "mov r8=%1;;\n"*/
  105. /*          "mov rr[r8]=%0;;\n"*/
  106.             "srlz.i;;\n"
  107.             "srlz.d;;\n"
  108.             "{mov rr[%1]=%0};;\n"
  109.             "srlz.i;;\n"
  110.             "srlz.d;;\n"
  111.             :
  112.             :"r"(rr.word),"r"(i)
  113.             :"r8"
  114.         );
  115.     };
  116.  
  117.    
  118.  
  119.     PTA_register pta;
  120.     pta.map.ve=0;                   /*Disable Walker*/
  121.     pta.map.vf=1;                   /*Large entry format*/
  122.     pta.map.size=VHPT_WIDTH;
  123.     pta.map.base=VHPT_BASE;
  124.    
  125.     return ;
  126.    
  127.     printf("pta struct size:%d\n",sizeof(pta));
  128.    
  129.     /*Write PTA*/
  130.     asm
  131.     (
  132.         "mov cr8=%0;;"
  133.         :
  134.         :"r"(pta.word)
  135.     ); 
  136.     return ;
  137. }  
  138.  
  139.  
  140. void page_arch_init(void)
  141. {
  142.     page_operations = &page_ht_operations;
  143.     set_VHPT_environment();
  144. }
  145.