| 1 | /*
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| 2 | * Copyright (c) 2001-2004 Jakub Jermar
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup amd64interrupt
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef KERN_amd64_INTERRUPT_H_
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| 36 | #define KERN_amd64_INTERRUPT_H_
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| 37 |
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| 38 | #include <typedefs.h>
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| 39 | #include <arch/pm.h>
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| 40 |
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| 41 | #define IVT_ITEMS IDT_ITEMS
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| 42 | #define IVT_FIRST 0
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| 43 |
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| 44 | #define EXC_COUNT 32
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| 45 | #define IRQ_COUNT 16
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| 46 |
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| 47 | #define IVT_EXCBASE 0
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| 48 | #define IVT_IRQBASE (IVT_EXCBASE + EXC_COUNT)
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| 49 | #define IVT_FREEBASE (IVT_IRQBASE + IRQ_COUNT)
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| 50 |
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| 51 | #define IRQ_CLK 0
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| 52 | #define IRQ_KBD 1
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| 53 | #define IRQ_PIC1 2
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| 54 | #define IRQ_PIC_SPUR 7
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| 55 | #define IRQ_MOUSE 12
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| 56 | #define IRQ_DP8390 9
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| 57 |
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| 58 | /* this one must have four least significant bits set to ones */
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| 59 | #define VECTOR_APIC_SPUR (IVT_ITEMS - 1)
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| 60 |
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| 61 | #if (((VECTOR_APIC_SPUR + 1) % 16) || VECTOR_APIC_SPUR >= IVT_ITEMS)
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| 62 | #error Wrong definition of VECTOR_APIC_SPUR
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| 63 | #endif
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| 64 |
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| 65 | #define VECTOR_DEBUG 1
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| 66 | #define VECTOR_CLK (IVT_IRQBASE + IRQ_CLK)
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| 67 | #define VECTOR_PIC_SPUR (IVT_IRQBASE + IRQ_PIC_SPUR)
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| 68 | #define VECTOR_SYSCALL IVT_FREEBASE
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| 69 | #define VECTOR_TLB_SHOOTDOWN_IPI (IVT_FREEBASE + 1)
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| 70 | #define VECTOR_DEBUG_IPI (IVT_FREEBASE + 2)
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| 71 |
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| 72 | /** This is passed to interrupt handlers */
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| 73 | typedef struct istate {
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| 74 | uint64_t rax;
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| 75 | uint64_t rcx;
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| 76 | uint64_t rdx;
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| 77 | uint64_t rsi;
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| 78 | uint64_t rdi;
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| 79 | uint64_t r8;
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| 80 | uint64_t r9;
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| 81 | uint64_t r10;
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| 82 | uint64_t r11;
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| 83 | uint64_t rbp;
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| 84 | uint64_t error_word;
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| 85 | uint64_t rip;
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| 86 | uint64_t cs;
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| 87 | uint64_t rflags;
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| 88 | uint64_t stack[]; /* Additional data on stack */
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| 89 | } istate_t;
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| 90 |
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| 91 | /** Return true if exception happened while in userspace */
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| 92 | static inline int istate_from_uspace(istate_t *istate)
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| 93 | {
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| 94 | return !(istate->rip & 0x8000000000000000);
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| 95 | }
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| 96 |
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| 97 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr)
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| 98 | {
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| 99 | istate->rip = retaddr;
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| 100 | }
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| 101 | static inline unative_t istate_get_pc(istate_t *istate)
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| 102 | {
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| 103 | return istate->rip;
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| 104 | }
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| 105 | static inline unative_t istate_get_fp(istate_t *istate)
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| 106 | {
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| 107 | return istate->rbp;
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| 108 | }
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| 109 |
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| 110 | extern void (* disable_irqs_function)(uint16_t irqmask);
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| 111 | extern void (* enable_irqs_function)(uint16_t irqmask);
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| 112 | extern void (* eoi_function)(void);
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| 113 |
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| 114 | extern void decode_istate(int n, istate_t *istate);
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| 115 | extern void interrupt_init(void);
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| 116 | extern void trap_virtual_enable_irqs(uint16_t irqmask);
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| 117 | extern void trap_virtual_disable_irqs(uint16_t irqmask);
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| 118 | /* AMD64 - specific page handler */
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| 119 | extern void ident_page_fault(int n, istate_t *istate);
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| 120 |
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| 121 | #endif
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| 122 |
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| 123 | /** @}
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| 124 | */
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