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  1. /*
  2.  * Copyright (c) 2005 Martin Decky
  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 ppc32mm
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <genarch/mm/page_pt.h>
  36. #include <mm/frame.h>
  37. #include <mm/as.h>
  38. #include <align.h>
  39. #include <config.h>
  40.  
  41. void page_arch_init(void)
  42. {
  43.     if (config.cpu_active == 1)
  44.         page_mapping_operations = &pt_mapping_operations;
  45. }
  46.  
  47.  
  48. uintptr_t hw_map(uintptr_t physaddr, size_t size)
  49. {
  50.     if (last_frame + ALIGN_UP(size, PAGE_SIZE) >
  51.         KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
  52.         panic("Unable to map physical memory %p (%" PRIs " bytes).",
  53.             physaddr, size)
  54.    
  55.     uintptr_t virtaddr = PA2KA(last_frame);
  56.     pfn_t i;
  57.     for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
  58.         page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i),
  59.             physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE | PAGE_WRITE);
  60.    
  61.     last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
  62.    
  63.     return virtaddr;
  64. }
  65.  
  66. void hw_area(uintptr_t *physaddr, pfn_t *frames)
  67. {
  68.     *physaddr = end_frame;
  69.     *frames = ADDR2PFN(0xffffffff - end_frame);
  70. }
  71.  
  72. /** @}
  73.  */
  74.