Subversion Repositories HelenOS

Rev

Rev 3665 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3665 Rev 4638
Line 1... Line 1...
1 
/*
 1 
/*
2 
 * Copyright (c) 2005 Jakub Jermar
 2 
 * Copyright (c) 2005 Jakub Jermar
- 
 
 3 
 * Copyright (c) 2009 Pavel Rimsky
3 
 * All rights reserved.
 4 
 * All rights reserved.
4 
 *
 5 
 *
5 
 * Redistribution and use in source and binary forms, with or without
 6 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions
 7 
 * modification, are permitted provided that the following conditions
7 
 * are met:
 8 
 * are met:
Line 31... Line 32...
31 
 */
 32 
 */
32 
/** @file
 33 
/** @file
33 
 */
 34 
 */
34 
 
 35 
 
35 
#include <arch/interrupt.h>
 36 
#include <arch/interrupt.h>
36 
#include <arch/sparc64.h>
 - 
 
37 
#include <arch/trap/interrupt.h>
 37 
#include <arch/trap/interrupt.h>
- 
 
 38 
#include <arch/sparc64.h>
38 
#include <interrupt.h>
 39 
#include <interrupt.h>
39 
#include <ddi/irq.h>
 40 
#include <ddi/irq.h>
40 
#include <arch/types.h>
 41 
#include <arch/types.h>
41 
#include <debug.h>
 42 
#include <debug.h>
42 
#include <arch/asm.h>
 43 
#include <arch/asm.h>
Line 57... Line 58...
57 
{
 58 
{
58 
    ASSERT(n >= IVT_FIRST && n <= IVT_ITEMS);
 59 
    ASSERT(n >= IVT_FIRST && n <= IVT_ITEMS);
59 
   
 60 
   
60 
    exc_register(n - 1, name, f);
 61 
    exc_register(n - 1, name, f);
61 
}
 62 
}
62 
 
 - 
 
63 
/** Process hardware interrupt.
 - 
 
64 
 *
 - 
 
65 
 * @param n Ignored.
 - 
 
66 
 * @param istate Ignored.
 - 
 
67 
 */
 - 
 
68 
void interrupt(int n, istate_t *istate)
 - 
 
69 
{
 - 
 
70 
    uint64_t status;
 - 
 
71 
    uint64_t intrcv;
 - 
 
72 
    uint64_t data0;
 - 
 
73 
    status = asi_u64_read(ASI_INTR_DISPATCH_STATUS, 0);
 - 
 
74 
    if (status & (!INTR_DISPATCH_STATUS_BUSY))
 - 
 
75 
        panic("Interrupt Dispatch Status busy bit not set\n");
 - 
 
76 
 
 - 
 
77 
    intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0);
 - 
 
78 
#if defined (US)
 - 
 
79 
    data0 = asi_u64_read(ASI_INTR_R, ASI_UDB_INTR_R_DATA_0);
 - 
 
80 
#elif defined (US3)
 - 
 
81 
    data0 = asi_u64_read(ASI_INTR_R, VA_INTR_R_DATA_0);
 - 
 
82 
#endif
 - 
 
83 
 
 - 
 
84 
    irq_t *irq = irq_dispatch_and_lock(data0);
 - 
 
85 
    if (irq) {
 - 
 
86 
        /*
 - 
 
87 
         * The IRQ handler was found.
 - 
 
88 
         */
 - 
 
89 
        irq->handler(irq, irq->arg);
 - 
 
90 
        /*
 - 
 
91 
         * See if there is a clear-interrupt-routine and call it.
 - 
 
92 
         */
 - 
 
93 
        if (irq->cir) {
 - 
 
94 
            irq->cir(irq->cir_arg, irq->inr);
 - 
 
95 
        }
 - 
 
96 
        spinlock_unlock(&irq->lock);
 - 
 
97 
    } else if (data0 > config.base) {
 - 
 
98 
        /*
 - 
 
99 
         * This is a cross-call.
 - 
 
100 
         * data0 contains address of the kernel function.
 - 
 
101 
         * We call the function only after we verify
 - 
 
102 
         * it is one of the supported ones.
 - 
 
103 
         */
 - 
 
104 
#ifdef CONFIG_SMP
 - 
 
105 
        if (data0 == (uintptr_t) tlb_shootdown_ipi_recv) {
 - 
 
106 
            tlb_shootdown_ipi_recv();
 - 
 
107 
        }
 - 
 
108 
#endif
 - 
 
109 
    } else {
 - 
 
110 
        /*
 - 
 
111 
         * Spurious interrupt.
 - 
 
112 
         */
 - 
 
113 
#ifdef CONFIG_DEBUG
 - 
 
114 
        printf("cpu%u: spurious interrupt (intrcv=%#" PRIx64
 - 
 
115 
            ", data0=%#" PRIx64 ")\n", CPU->id, intrcv, data0);
 - 
 
116 
#endif
 - 
 
117 
    }
 - 
 
118 
 
 - 
 
119 
    membar();
 - 
 
120 
    asi_u64_write(ASI_INTR_RECEIVE, 0, 0);
 - 
 
121 
}
 - 
 
122 
 
 - 
 
123 
/** @}
 63 
/** @}
124 
 */
 64 
 */