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Rev 2107 Rev 2218
Line 174... Line 174...
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static void irq_interrupt(int n, istate_t *istate)
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static void irq_interrupt(int n, istate_t *istate)
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{
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{
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    ASSERT(n >= IVT_IRQBASE);
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    ASSERT(n >= IVT_IRQBASE);
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    int inum = n - IVT_IRQBASE;
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    int inum = n - IVT_IRQBASE;
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    bool ack = false;
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    ASSERT(inum < IRQ_COUNT);
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    ASSERT(inum < IRQ_COUNT);
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    ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1));
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    ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1));
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    irq_t *irq = irq_dispatch_and_lock(inum);
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    irq_t *irq = irq_dispatch_and_lock(inum);
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    if (irq) {
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    if (irq) {
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        /*
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        /*
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         * The IRQ handler was found.
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         * The IRQ handler was found.
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         */
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         */
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        if (irq->preack) {
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            /* Send EOI before processing the interrupt */
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            trap_virtual_eoi();
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            ack = true;
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        }
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        irq->handler(irq, irq->arg);
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        irq->handler(irq, irq->arg);
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        spinlock_unlock(&irq->lock);
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        spinlock_unlock(&irq->lock);
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    } else {
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    } else {
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        /*
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        /*
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         * Spurious interrupt.
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         * Spurious interrupt.
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         */
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         */
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#ifdef CONFIG_DEBUG
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#ifdef CONFIG_DEBUG
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        printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum);
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        printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum);
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#endif
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#endif
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    }
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    }
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    if (!ack)
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    trap_virtual_eoi();
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        trap_virtual_eoi();
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}
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}
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void interrupt_init(void)
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void interrupt_init(void)
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{
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{
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    int i;
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    int i;