/*
* Copyright (c) 2005 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup sparc64interrupt
* @{
*/
/** @file
*/
#include <arch/interrupt.h>
#include <arch/sparc64.h>
#include <arch/trap/interrupt.h>
#include <interrupt.h>
#include <ddi/irq.h>
#include <arch/types.h>
#include <debug.h>
#include <arch/asm.h>
#include <arch/barrier.h>
#include <print.h>
#include <arch.h>
#include <mm/tlb.h>
#include <config.h>
#include <synch/spinlock.h>
/** Register Interrupt Level Handler.
*
* @param n Interrupt Level (1 - 15).
* @param name Short descriptive string.
* @param f Handler.
*/
void interrupt_register(int n, const char *name, iroutine f)
{
ASSERT(n >= IVT_FIRST && n <= IVT_ITEMS);
exc_register(n - 1, name, f);
}
/** Process hardware interrupt.
*
* @param n Ignored.
* @param istate Ignored.
*/
void interrupt(int n, istate_t *istate)
{
uint64_t intrcv;
uint64_t data0;
intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0);
data0 = asi_u64_read(ASI_UDB_INTR_R, ASI_UDB_INTR_R_DATA_0);
irq_t *irq = irq_dispatch_and_lock(data0);
if (irq) {
/*
* The IRQ handler was found.
*/
irq->handler(irq, irq->arg);
spinlock_unlock(&irq->lock);
} else if (data0 > config.base) {
/*
* This is a cross-call.
* data0 contains address of the kernel function.
* We call the function only after we verify
* it is one of the supported ones.
*/
#ifdef CONFIG_SMP
if (data0 == (uintptr_t) tlb_shootdown_ipi_recv) {
tlb_shootdown_ipi_recv();
}
#endif
} else {
/*
* Spurious interrupt.
*/
#ifdef CONFIG_DEBUG
printf("cpu%u: spurious interrupt (intrcv=%#" PRIx64
", data0=%#" PRIx64 ")\n", CPU->id, intrcv, data0);
#endif
}
membar();
asi_u64_write(ASI_INTR_RECEIVE, 0, 0);
}
/** @}
*/