intr_control.cc

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/*
 * Copyright (c) 2002-2005 The Regents of The University of Michigan
 * 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;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 COPYRIGHT
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 */

#include "cpu/intr_control.hh"

#include <string>
#include <vector>

#include "base/trace.hh"
#include "cpu/base.hh"
#include "cpu/thread_context.hh"
#include "debug/IntrControl.hh"
#include "sim/sim_object.hh"

using namespace std;

IntrControl::IntrControl(const Params *p)
    : SimObject(p), sys(p->sys)
{}

void
IntrControl::post(int cpu_id, int int_num, int index)
{
    DPRINTF(IntrControl, "post  %d:%d (cpu %d)\n", int_num, index, cpu_id);
    ThreadContext *tc = sys->getThreadContext(cpu_id);
    tc->getCpuPtr()->postInterrupt(tc->threadId(), int_num, index);
}

void
IntrControl::clear(int cpu_id, int int_num, int index)
{
    DPRINTF(IntrControl, "clear %d:%d (cpu %d)\n", int_num, index, cpu_id);
    ThreadContext *tc = sys->getThreadContext(cpu_id);
    tc->getCpuPtr()->clearInterrupt(tc->threadId(), int_num, index);
}

void
IntrControl::clearAll(int cpu_id)
{
    DPRINTF(IntrControl, "Clear all pending interrupts for CPU %d\n", cpu_id);
    ThreadContext *tc = sys->getThreadContext(cpu_id);
    tc->getCpuPtr()->clearInterrupts(tc->threadId());
}

bool
IntrControl::havePosted(int cpu_id) const
{
    DPRINTF(IntrControl, "Check pending interrupts for CPU %d\n", cpu_id);
    ThreadContext *tc = sys->getThreadContext(cpu_id);
    return tc->getCpuPtr()->checkInterrupts(tc);
}

IntrControl *
IntrControlParams::create()
{
    return new IntrControl(this);
}