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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. #include <arch/asm.h>
  37.  
  38. __u64 thash(__u64 va);
  39. __u64 thash(__u64 va)
  40. {
  41.     __u64 ret;
  42.     asm
  43.     (
  44.         "thash %0=%1;;"
  45.         :"=r"(ret)
  46.         :"r" (va)
  47.     );
  48.    
  49.     return ret;
  50. }
  51.  
  52. __u64 ttag(__u64 va);
  53. __u64 ttag(__u64 va)
  54. {
  55.     __u64 ret;
  56.     asm
  57.     (
  58.         "ttag %0=%1;;"
  59.         :"=r"(ret)
  60.         :"r" (va)
  61.     );
  62.    
  63.     return ret;
  64. }
  65.  
  66.  
  67. static void set_VHPT_environment(void)
  68. {
  69.    
  70.  
  71.     /*
  72.     TODO:
  73.     */
  74.    
  75.     int i;
  76.    
  77.     /* First set up REGION REGISTER 0 */
  78.    
  79.     region_register rr;
  80.     rr.map.ve=0;                  /*Disable Walker*/
  81.     rr.map.ps=PAGE_WIDTH;
  82.     rr.map.rid=REGION_RID_MAIN;
  83.    
  84.     asm
  85.     (
  86.         ";;\n"
  87.         "srlz.i;;\n"
  88.         "srlz.d;;\n"
  89.         "{mov rr[r0]=%0};;\n"
  90.         "srlz.i;;\n"
  91.         "srlz.d;;\n"
  92.         ";;\n"
  93.         :
  94.         :"r"(rr.word)
  95.     );
  96.  
  97.            
  98.     /* And Invalidate the rest of REGION REGISTERS */
  99.     for(i=1;i<REGION_REGISTERS;i++)
  100.     {
  101.         rr.map.rid=REGION_RID_FIRST_INVALID+i-1;
  102.         asm
  103.         (
  104.             ";;\n"
  105. /*          "mov r8=%1;;\n"*/
  106. /*          "mov rr[r8]=%0;;\n"*/
  107.             "srlz.i;;\n"
  108.             "srlz.d;;\n"
  109.             "{mov rr[%1]=%0};;\n"
  110.             "srlz.i;;\n"
  111.             "srlz.d;;\n"
  112.             :
  113.             :"r"(rr.word),"r"(i)
  114.             :"r8"
  115.         );
  116.     };
  117.  
  118.    
  119.  
  120.     PTA_register pta;
  121.     pta.map.ve=0;                   /*Disable Walker*/
  122.     pta.map.vf=1;                   /*Large entry format*/
  123.     pta.map.size=VHPT_WIDTH;
  124.     pta.map.base=VHPT_BASE;
  125.    
  126.     return ;
  127.    
  128.     printf("pta struct size:%d\n",sizeof(pta));
  129.    
  130.     /*Write PTA*/
  131.     asm
  132.     (
  133.         "mov cr8=%0;;"
  134.         :
  135.         :"r"(pta.word)
  136.     ); 
  137.     return ;
  138. }  
  139.  
  140.  
  141. void page_arch_init(void)
  142. {
  143.     page_operations = &page_ht_operations;
  144.     pk_disable();
  145.     set_VHPT_environment();
  146. }
  147.