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  1. /*
  2.  * Copyright (C) 2001-2004 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 __INTERRUPT_H__
  30. #define __INTERRUPT_H__
  31.  
  32. #include <arch/types.h>
  33. #include <arch/pm.h>
  34.  
  35. #define IVT_ITEMS       IDT_ITEMS
  36.  
  37. #define IVT_EXCBASE     0
  38. #define EXCLAST         31
  39.  
  40. #define IVT_IRQBASE     (IVT_EXCBASE+EXCLAST+1)
  41. #define IRQLAST         15
  42.  
  43. #define IVT_FREEBASE        (IVT_IRQBASE+IRQLAST+1)
  44.  
  45. #define IRQ_CLK     0
  46. #define IRQ_KBD     1
  47. #define IRQ_PIC1    2
  48. #define IRQ_PIC_SPUR    7
  49.  
  50. /* this one must have four least significant bits set to ones */
  51. #define VECTOR_APIC_SPUR    (IVT_ITEMS-1)
  52.  
  53. #if (((VECTOR_APIC_SPUR + 1)%16) || VECTOR_APIC_SPUR >= IVT_ITEMS)
  54. #error Wrong definition of VECTOR_APIC_SPUR
  55. #endif
  56.  
  57. #define VECTOR_PIC_SPUR     (IVT_IRQBASE+IRQ_PIC_SPUR)
  58. #define VECTOR_CLK      (IVT_IRQBASE+IRQ_CLK)
  59. #define VECTOR_KBD      (IVT_IRQBASE+IRQ_KBD)
  60.  
  61. #define VECTOR_SYSCALL      (IVT_FREEBASE+0)
  62.  
  63. typedef void (* iroutine)(__u8 n, __u32 stack[]);
  64.  
  65. extern iroutine ivt[IVT_ITEMS];
  66.  
  67. extern void (* disable_irqs_function)(__u16 irqmask);
  68. extern void (* enable_irqs_function)(__u16 irqmask);
  69. extern void (* eoi_function)(void);
  70.  
  71. extern iroutine trap_register(__u8 n, iroutine f);
  72.  
  73. extern void trap_dispatcher(__u8 n, __u32 stack[]);
  74.  
  75. extern void null_interrupt(__u8 n, __u32 stack[]);
  76. extern void gp_fault(__u8 n, __u32 stack[]);
  77. extern void page_fault(__u8 n, __u32 stack[]);
  78. extern void syscall(__u8 n, __u32 stack[]);
  79.  
  80. extern void trap_virtual_enable_irqs(__u16 irqmask);
  81. extern void trap_virtual_disable_irqs(__u16 irqmask);
  82. extern void trap_virtual_eoi(void);
  83.  
  84. #endif
  85.