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Rev 3386 Rev 4153
Line 65... Line 65...
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 * @param n Ignored.
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 * @param n Ignored.
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 * @param istate Ignored.
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 * @param istate Ignored.
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 */
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 */
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void interrupt(int n, istate_t *istate)
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void interrupt(int n, istate_t *istate)
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{
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{
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    uint64_t status;
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    uint64_t intrcv;
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    uint64_t intrcv;
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    uint64_t data0;
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    uint64_t data0;
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    status = asi_u64_read(ASI_INTR_DISPATCH_STATUS, 0);
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    if (status & (!INTR_DISPATCH_STATUS_BUSY))
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        panic("Interrupt Dispatch Status busy bit not set.");
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    intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0);
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    intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0);
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#if defined (US)
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    data0 = asi_u64_read(ASI_UDB_INTR_R, ASI_UDB_INTR_R_DATA_0);
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    data0 = asi_u64_read(ASI_INTR_R, ASI_UDB_INTR_R_DATA_0);
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#elif defined (US3)
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    data0 = asi_u64_read(ASI_INTR_R, VA_INTR_R_DATA_0);
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#endif
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    irq_t *irq = irq_dispatch_and_lock(data0);
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    irq_t *irq = irq_dispatch_and_lock(data0);
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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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        irq->handler(irq, irq->arg);
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        irq->handler(irq);
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        /*
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         * See if there is a clear-interrupt-routine and call it.
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         */
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        if (irq->cir) {
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            irq->cir(irq->cir_arg, irq->inr);
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        }
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        spinlock_unlock(&irq->lock);
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        spinlock_unlock(&irq->lock);
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    } else if (data0 > config.base) {
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    } else if (data0 > config.base) {
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        /*
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        /*
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         * This is a cross-call.
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         * This is a cross-call.
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         * data0 contains address of the kernel function.
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         * data0 contains address of the kernel function.
Line 96... Line 110...
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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%u: spurious interrupt (intrcv=%#" PRIx64
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        printf("cpu%u: spurious interrupt (intrcv=%#" PRIx64
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            ", data0=%#" PRIx64 ")\n", CPU->id, intrcv, data0);
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            ", data0=%#" PRIx64 ")\n", CPU->id, intrcv, data0);
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#endif
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#endif
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    }
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    }
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    membar();
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    membar();
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    asi_u64_write(ASI_INTR_RECEIVE, 0, 0);
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    asi_u64_write(ASI_INTR_RECEIVE, 0, 0);