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/*
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/*
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 * Copyright (c) 2005 Jakub Jermar
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 * Copyright (c) 2005 Jakub Jermar
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 * Copyright (c) 2009 Pavel Rimsky
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 */
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 */
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/** @file
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/** @file
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 */
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 */
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#include <arch/interrupt.h>
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#include <arch/interrupt.h>
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#include <arch/sparc64.h>
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#include <arch/trap/interrupt.h>
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#include <arch/trap/interrupt.h>
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#include <arch/sparc64.h>
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#include <interrupt.h>
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#include <interrupt.h>
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#include <ddi/irq.h>
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#include <ddi/irq.h>
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#include <arch/types.h>
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#include <arch/types.h>
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#include <debug.h>
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#include <debug.h>
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#include <arch/asm.h>
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#include <arch/asm.h>
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{
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{
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    ASSERT(n >= IVT_FIRST && n <= IVT_ITEMS);
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    ASSERT(n >= IVT_FIRST && n <= IVT_ITEMS);
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    exc_register(n - 1, name, f);
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    exc_register(n - 1, name, f);
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}
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}
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/** Process hardware interrupt.
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 *
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 * @param n Ignored.
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 * @param istate Ignored.
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 */
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void interrupt(int n, istate_t *istate)
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{
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    uint64_t status;
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    uint64_t intrcv;
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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\n");
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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_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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    if (irq) {
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        /*
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         * The IRQ handler was found.
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         */
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        irq->handler(irq, irq->arg);
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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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    } else if (data0 > config.base) {
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        /*
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         * This is a cross-call.
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         * data0 contains address of the kernel function.
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         * We call the function only after we verify
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         * it is one of the supported ones.
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         */
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#ifdef CONFIG_SMP
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        if (data0 == (uintptr_t) tlb_shootdown_ipi_recv) {
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            tlb_shootdown_ipi_recv();
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        }
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#endif
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    } else {
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        /*
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         * Spurious interrupt.
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         */
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#ifdef CONFIG_DEBUG
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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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#endif
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    }
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    membar();
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    asi_u64_write(ASI_INTR_RECEIVE, 0, 0);
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}
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/** @}
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/** @}
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 */
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 */