0,0 → 1,124 |
/* |
* 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 status; |
uint64_t intrcv; |
uint64_t data0; |
status = asi_u64_read(ASI_INTR_DISPATCH_STATUS, 0); |
if (status & (!INTR_DISPATCH_STATUS_BUSY)) |
panic("Interrupt Dispatch Status busy bit not set."); |
|
intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0); |
#if defined (US) |
data0 = asi_u64_read(ASI_INTR_R, ASI_UDB_INTR_R_DATA_0); |
#elif defined (US3) |
data0 = asi_u64_read(ASI_INTR_R, VA_INTR_R_DATA_0); |
#endif |
|
irq_t *irq = irq_dispatch_and_lock(data0); |
if (irq) { |
/* |
* The IRQ handler was found. |
*/ |
irq->handler(irq); |
/* |
* See if there is a clear-interrupt-routine and call it. |
*/ |
if (irq->cir) { |
irq->cir(irq->cir_arg, irq->inr); |
} |
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); |
} |
|
/** @} |
*/ |