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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.  /** @addtogroup amd64interrupt amd64
  30.  * @ingroup interrupt
  31.  * @{
  32.  */
  33. /** @file
  34.  */
  35.  
  36. #ifndef __ia32_INTERRUPT_H__
  37. #define __ia32_INTERRUPT_H__
  38.  
  39. #include <arch/types.h>
  40. #include <arch/pm.h>
  41.  
  42. #define IVT_ITEMS       IDT_ITEMS
  43.  
  44. #define EXC_COUNT   32
  45. #define IRQ_COUNT   16
  46.  
  47. #define IVT_EXCBASE     0
  48. #define IVT_IRQBASE     (IVT_EXCBASE+EXC_COUNT)
  49. #define IVT_FREEBASE        (IVT_IRQBASE+IRQ_COUNT)
  50.  
  51. #define IRQ_CLK     0
  52. #define IRQ_KBD     1
  53. #define IRQ_PIC1    2
  54. #define IRQ_PIC_SPUR    7
  55.  
  56. /* this one must have four least significant bits set to ones */
  57. #define VECTOR_APIC_SPUR    (IVT_ITEMS-1)
  58.  
  59. #if (((VECTOR_APIC_SPUR + 1)%16) || VECTOR_APIC_SPUR >= IVT_ITEMS)
  60. #error Wrong definition of VECTOR_APIC_SPUR
  61. #endif
  62.  
  63. #define VECTOR_DEBUG            1
  64. #define VECTOR_PIC_SPUR     (IVT_IRQBASE+IRQ_PIC_SPUR)
  65. #define VECTOR_CLK      (IVT_IRQBASE+IRQ_CLK)
  66. #define VECTOR_KBD      (IVT_IRQBASE+IRQ_KBD)
  67.  
  68. #define VECTOR_TLB_SHOOTDOWN_IPI    (IVT_FREEBASE+0)
  69. #define VECTOR_WAKEUP_IPI       (IVT_FREEBASE+1)
  70. #define VECTOR_DEBUG_IPI                (IVT_FREEBASE+2)
  71.  
  72. /** This is passed to interrupt handlers */
  73. struct istate {
  74.     __u64 rax;
  75.     __u64 rbx;
  76.     __u64 rcx;
  77.     __u64 rdx;
  78.     __u64 rsi;
  79.     __u64 rdi;
  80.     __u64 r8;
  81.     __u64 r9;
  82.     __u64 r10;
  83.     __u64 r11;
  84.     __u64 r12;
  85.     __u64 r13;
  86.     __u64 r14;
  87.     __u64 r15;
  88.     __u64 rbp;
  89.     __u64 error_word;
  90.     __u64 rip;
  91.     __u64 cs;
  92.     __u64 rflags;
  93.     __u64 stack[]; /* Additional data on stack */
  94. };
  95.  
  96. /** Return true if exception happened while in userspace */
  97. static inline int istate_from_uspace(istate_t *istate)
  98. {
  99.     return !(istate->rip & 0x8000000000000000);
  100. }
  101.  
  102. static inline void istate_set_retaddr(istate_t *istate, __address retaddr)
  103. {
  104.     istate->rip = retaddr;
  105. }
  106. static inline __native istate_get_pc(istate_t *istate)
  107. {
  108.     return istate->rip;
  109. }
  110.  
  111. extern void (* disable_irqs_function)(__u16 irqmask);
  112. extern void (* enable_irqs_function)(__u16 irqmask);
  113. extern void (* eoi_function)(void);
  114.  
  115. extern void print_info_errcode(int n, istate_t *istate);
  116. extern void null_interrupt(int n, istate_t *istate);
  117. extern void gp_fault(int n, istate_t *istate);
  118. extern void nm_fault(int n, istate_t *istate);
  119. extern void ss_fault(int n, istate_t *istate);
  120. extern void page_fault(int n, istate_t *istate);
  121. extern void syscall(int n, istate_t *istate);
  122. extern void tlb_shootdown_ipi(int n, istate_t *istate);
  123.  
  124. extern void trap_virtual_enable_irqs(__u16 irqmask);
  125. extern void trap_virtual_disable_irqs(__u16 irqmask);
  126. extern void trap_virtual_eoi(void);
  127. /* AMD64 - specific page handler */
  128. extern void ident_page_fault(int n, istate_t *istate);
  129.  
  130. #endif
  131.  
  132.  /** @}
  133.  */
  134.  
  135.