| 1 | /*
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| 2 | * Copyright (c) 2005 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 ia64interrupt
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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_ia64_INTERRUPT_H_
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| 36 | #define KERN_ia64_INTERRUPT_H_
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| 37 |
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| 38 | #include <typedefs.h>
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| 39 | #include <arch/types.h>
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| 40 | #include <arch/register.h>
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| 41 |
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| 42 | /** ia64 has 256 INRs. */
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| 43 | #define INR_COUNT 256
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| 44 |
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| 45 | /*
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| 46 | * We need to keep this just to compile.
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| 47 | * We might eventually move interrupt/ stuff
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| 48 | * to genarch.
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| 49 | */
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| 50 | #define IVT_ITEMS 0
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| 51 | #define IVT_FIRST 0
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| 52 |
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| 53 | /** External Interrupt vectors. */
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| 54 | #define INTERRUPT_TIMER 255
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| 55 | #define INTERRUPT_SPURIOUS 15
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| 56 |
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| 57 | /** General Exception codes. */
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| 58 | #define GE_ILLEGALOP 0
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| 59 | #define GE_PRIVOP 1
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| 60 | #define GE_PRIVREG 2
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| 61 | #define GE_RESREGFLD 3
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| 62 | #define GE_DISBLDISTRAN 4
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| 63 | #define GE_ILLEGALDEP 8
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| 64 |
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| 65 | #define EOI 0 /**< The actual value doesn't matter. */
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| 66 |
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| 67 | struct istate {
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| 68 | __r128 f2;
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| 69 | __r128 f3;
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| 70 | __r128 f4;
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| 71 | __r128 f5;
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| 72 | __r128 f6;
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| 73 | __r128 f7;
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| 74 | __r128 f8;
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| 75 | __r128 f9;
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| 76 | __r128 f10;
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| 77 | __r128 f11;
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| 78 | __r128 f12;
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| 79 | __r128 f13;
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| 80 | __r128 f14;
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| 81 | __r128 f15;
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| 82 | __r128 f16;
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| 83 | __r128 f17;
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| 84 | __r128 f18;
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| 85 | __r128 f19;
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| 86 | __r128 f20;
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| 87 | __r128 f21;
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| 88 | __r128 f22;
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| 89 | __r128 f23;
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| 90 | __r128 f24;
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| 91 | __r128 f25;
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| 92 | __r128 f26;
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| 93 | __r128 f27;
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| 94 | __r128 f28;
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| 95 | __r128 f29;
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| 96 | __r128 f30;
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| 97 | __r128 f31;
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| 98 |
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| 99 | uintptr_t ar_bsp;
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| 100 | uintptr_t ar_bspstore;
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| 101 | uintptr_t ar_bspstore_new;
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| 102 | uint64_t ar_rnat;
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| 103 | uint64_t ar_ifs;
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| 104 | uint64_t ar_pfs;
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| 105 | uint64_t ar_rsc;
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| 106 | uintptr_t cr_ifa;
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| 107 | cr_isr_t cr_isr;
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| 108 | uintptr_t cr_iipa;
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| 109 | psr_t cr_ipsr;
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| 110 | uintptr_t cr_iip;
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| 111 | uint64_t pr;
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| 112 | uintptr_t sp;
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| 113 |
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| 114 | /*
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| 115 | * The following variables are defined only for break_instruction handler.
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| 116 | */
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| 117 | uint64_t in0;
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| 118 | uint64_t in1;
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| 119 | uint64_t in2;
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| 120 | uint64_t in3;
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| 121 | uint64_t in4;
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| 122 | };
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| 123 |
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| 124 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr)
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| 125 | {
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| 126 | istate->cr_iip = retaddr;
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| 127 | istate->cr_ipsr.ri = 0; /* return to instruction slot #0 */
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| 128 | }
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| 129 |
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| 130 | static inline unative_t istate_get_pc(istate_t *istate)
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| 131 | {
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| 132 | return istate->cr_iip;
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| 133 | }
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| 134 |
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| 135 | static inline int istate_from_uspace(istate_t *istate)
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| 136 | {
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| 137 | return (istate->cr_iip) < 0xe000000000000000ULL;
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| 138 | }
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| 139 |
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| 140 | extern void *ivt;
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| 141 |
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| 142 | extern void general_exception(uint64_t vector, istate_t *istate);
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| 143 | extern int break_instruction(uint64_t vector, istate_t *istate);
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| 144 | extern void universal_handler(uint64_t vector, istate_t *istate);
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| 145 | extern void nop_handler(uint64_t vector, istate_t *istate);
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| 146 | extern void external_interrupt(uint64_t vector, istate_t *istate);
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| 147 | extern void disabled_fp_register(uint64_t vector, istate_t *istate);
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| 148 |
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| 149 | #endif
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| 150 |
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| 151 | /** @}
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| 152 | */
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