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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. #ifndef __ia64_INTERRUPT_H__
  30. #define __ia64_INTERRUPT_H__
  31.  
  32. #include <arch/types.h>
  33. #include <arch/register.h>
  34.  
  35. /** External Interrupt vectors. */
  36. #define INTERRUPT_TIMER     0
  37. #define INTERRUPT_SPURIOUS  15
  38.  
  39. /** General Exception codes. */
  40. #define GE_ILLEGALOP        0
  41. #define GE_PRIVOP       1
  42. #define GE_PRIVREG      2
  43. #define GE_RESREGFLD        3
  44. #define GE_DISBLDISTRAN     4
  45. #define GE_ILLEGALDEP       8
  46.  
  47. #define EOI 0       /**< The actual value doesn't matter. */
  48.  
  49. struct exception_regdump {
  50.     __address ar_bsp;
  51.     __address ar_bspstore;
  52.     __address ar_bspstore_new;
  53.     __u64 ar_rnat;
  54.     __u64 ar_ifs;
  55.     __u64 ar_pfs;
  56.     __u64 ar_rsc;
  57.     __address cr_ifa;
  58.     cr_isr_t cr_isr;
  59.     __address cr_iipa;
  60.     psr_t cr_ipsr;
  61.     __address cr_iip;
  62.     __u64 pr;
  63.     __address sp;
  64.    
  65.     /*
  66.      * The following variables are defined only for break_instruction handler.
  67.      */
  68.     __u64 in0;
  69.     __u64 in1;
  70.     __u64 in2;
  71.     __u64 in3;
  72. } __attribute__ ((packed));
  73.  
  74. extern void *ivt;
  75.  
  76. extern void general_exception(__u64 vector, struct exception_regdump *pstate);
  77. extern int break_instruction(__u64 vector, struct exception_regdump *pstate);
  78. extern void universal_handler(__u64 vector, struct exception_regdump *pstate);
  79. extern void external_interrupt(__u64 vector, struct exception_regdump *pstate);
  80.  
  81. #endif
  82.