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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 <arch/mm/as.h>
  30. #include <genarch/mm/as_pt.h>
  31. #include <genarch/mm/asid_fifo.h>
  32. #include <arch/mm/tlb.h>
  33. #include <mm/tlb.h>
  34. #include <mm/as.h>
  35. #include <arch/cp0.h>
  36. #include <arch.h>
  37.  
  38. /** Architecture dependent address space init. */
  39. void as_arch_init(void)
  40. {
  41.         as_operations = &as_pt_operations;
  42.     asid_fifo_init();
  43. }
  44.  
  45. /** Install address space.
  46.  *
  47.  * Install ASID.
  48.  *
  49.  * @param as Address space structure.
  50.  */
  51. void as_install_arch(as_t *as)
  52. {
  53.     entry_hi_t hi;
  54.     ipl_t ipl;
  55.  
  56.     /*
  57.      * Install ASID.
  58.      */
  59.     hi.value = cp0_entry_hi_read();
  60.  
  61.     ipl = interrupts_disable();
  62.     spinlock_lock(&as->lock);
  63.     hi.asid = as->asid;
  64.     cp0_entry_hi_write(hi.value);  
  65.     spinlock_unlock(&as->lock);
  66.     interrupts_restore(ipl);
  67. }
  68.  
  69.