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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.  /** @addtogroup sparc64mm 
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/mm/page.h>
  36. #include <arch/mm/tlb.h>
  37. #include <genarch/mm/page_ht.h>
  38. #include <mm/frame.h>
  39. #include <bitops.h>
  40. #include <debug.h>
  41.  
  42. void page_arch_init(void)
  43. {
  44.     page_mapping_operations = &ht_mapping_operations;
  45. }
  46.  
  47. __address hw_map(__address physaddr, size_t size)
  48. {
  49.     unsigned int order;
  50.     int i;
  51.  
  52.     struct {
  53.         int pagesize;
  54.         size_t increment;
  55.         count_t count;
  56.     } sizemap[] = {
  57.         { PAGESIZE_8K, 0, 1 },          /* 8K */
  58.         { PAGESIZE_8K, PAGE_SIZE, 2 },      /* 16K */
  59.         { PAGESIZE_8K, PAGE_SIZE, 4 },      /* 32K */
  60.         { PAGESIZE_64K, 0, 1},          /* 64K */
  61.         { PAGESIZE_64K, 8*PAGE_SIZE, 2 },   /* 128K */
  62.         { PAGESIZE_64K, 8*PAGE_SIZE, 4 },   /* 256K */
  63.         { PAGESIZE_512K, 0, 1 },        /* 512K */
  64.         { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */
  65.         { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */
  66.         { PAGESIZE_4M, 0, 1 }           /* 4M */
  67.     };
  68.    
  69.     ASSERT(size <= 4*1024*1024);
  70.    
  71.     if (size <= FRAME_SIZE)
  72.         order = 0;
  73.     else
  74.         order = (fnzb32(size - 1) + 1) - FRAME_WIDTH;
  75.    
  76.     __address virtaddr = (__address) frame_alloc(order, FRAME_KA);
  77.  
  78.     for (i = 0; i < sizemap[order].count; i++)
  79.         dtlb_insert_mapping(virtaddr + i*sizemap[order].increment,
  80.                     physaddr + i*sizemap[order].increment,
  81.                     sizemap[order].pagesize, true, false);
  82.    
  83.     return virtaddr;
  84. }
  85.  
  86.  /** @}
  87.  */
  88.  
  89.