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  1. /*
  2.  * Copyright (C) 2005 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 <print.h>
  30. #include <test.h>
  31. #include <mm/page.h>
  32. #include <mm/frame.h>
  33. #include <mm/as.h>
  34. #include <arch/mm/page.h>
  35. #include <arch/types.h>
  36. #include <debug.h>
  37.  
  38. #define PAGE0   0x10000000
  39. #define PAGE1   (PAGE0+PAGE_SIZE)
  40.  
  41. #define VALUE0  0x01234567
  42. #define VALUE1  0x89abcdef
  43.  
  44. char * test_mapping1(void)
  45. {
  46.     uintptr_t frame0, frame1;
  47.     uint32_t v0, v1;
  48.  
  49.     frame0 = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_KA);
  50.     frame1 = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_KA);
  51.  
  52.     printf("Writing %#x to physical address %p.\n", VALUE0, KA2PA(frame0));
  53.     *((uint32_t *) frame0) = VALUE0;
  54.     printf("Writing %#x to physical address %p.\n", VALUE1, KA2PA(frame1));
  55.     *((uint32_t *) frame1) = VALUE1;
  56.    
  57.     printf("Mapping virtual address %p to physical address %p.\n", PAGE0, KA2PA(frame0));
  58.     page_mapping_insert(AS_KERNEL, PAGE0, KA2PA(frame0), PAGE_PRESENT | PAGE_WRITE);
  59.     printf("Mapping virtual address %p to physical address %p.\n", PAGE1, KA2PA(frame1));  
  60.     page_mapping_insert(AS_KERNEL, PAGE1, KA2PA(frame1), PAGE_PRESENT | PAGE_WRITE);
  61.    
  62.     printf("Value at virtual address %p is %#x.\n", PAGE0, v0 = *((uint32_t *) PAGE0));
  63.     printf("Value at virtual address %p is %#x.\n", PAGE1, v1 = *((uint32_t *) PAGE1));
  64.    
  65.     if (v0 != VALUE0)
  66.         return "Value at v0 not equal to VALUE0";
  67.     if (v1 != VALUE1)
  68.         return "Value at v1 not equal to VALUE1";
  69.  
  70.     printf("Writing %#x to virtual address %p.\n", 0, PAGE0);
  71.     *((uint32_t *) PAGE0) = 0;
  72.     printf("Writing %#x to virtual address %p.\n", 0, PAGE1);
  73.     *((uint32_t *) PAGE1) = 0; 
  74.  
  75.     v0 = *((uint32_t *) PAGE0);
  76.     v1 = *((uint32_t *) PAGE1);
  77.    
  78.     printf("Value at virtual address %p is %#x.\n", PAGE0, *((uint32_t *) PAGE0)); 
  79.     printf("Value at virtual address %p is %#x.\n", PAGE1, *((uint32_t *) PAGE1));
  80.  
  81.     if (v0 != 0)
  82.         return "Value at v0 not equal to 0";
  83.     if (v1 != 0)
  84.         return "Value at v1 not equal to 0";
  85.    
  86.     return NULL;   
  87. }
  88.