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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.  
  30. #include <arch/interrupt.h>
  31. #include <panic.h>
  32. #include <print.h>
  33. #include <arch/types.h>
  34. #include <arch/asm.h>
  35. #include <arch/barrier.h>
  36. #include <arch/register.h>
  37. #include <arch.h>
  38.  
  39. void external_interrupt(void)
  40. {
  41.     cr_ivr_t ivr;
  42.    
  43.     ivr.value = ivr_read();
  44.     srlz_d();
  45.    
  46.     switch(ivr.value) {
  47.         case INTERRUPT_TIMER:
  48.             panic("cpu%d: timer interrupt\n", CPU->id);
  49.             break;
  50.         case INTERRUPT_SPURIOUS:
  51.             printf("cpu%d: spurious interrupt\n", CPU->id);
  52.         break;
  53.         default:
  54.         panic("\nUnhandled External Interrupt Vector %d\n", ivr.vector);
  55.         break;
  56.     }
  57. }
  58.