/*
 * Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 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 HOLDER OR CONTRIBUTORS 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.
 */

#include <Kernel/Arch/i386/CPU.h>
#include <Kernel/Assertions.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
#include <Kernel/Interrupts/InterruptManagement.h>
#include <Kernel/Interrupts/PIC.h>

namespace Kernel {
GenericInterruptHandler& GenericInterruptHandler::from(u8 interrupt_number)
{
    return get_interrupt_handler(interrupt_number);
}

GenericInterruptHandler::GenericInterruptHandler(u8 interrupt_number, bool disable_remap)
    : m_interrupt_number(interrupt_number),
      m_disable_remap(disable_remap)
{
    if (m_disable_remap)
        register_generic_interrupt_handler(m_interrupt_number, *this);
    else
        register_generic_interrupt_handler(InterruptManagement::acquire_mapped_interrupt_number(m_interrupt_number), *this);
}

GenericInterruptHandler::~GenericInterruptHandler()
{
    if (m_disable_remap)
        unregister_generic_interrupt_handler(m_interrupt_number, *this);
    else
        unregister_generic_interrupt_handler(InterruptManagement::acquire_mapped_interrupt_number(m_interrupt_number), *this);
}

void GenericInterruptHandler::change_interrupt_number(u8 number)
{
    ASSERT_INTERRUPTS_ENABLED();
    ASSERT(!m_disable_remap);
    unregister_generic_interrupt_handler(InterruptManagement::acquire_mapped_interrupt_number(interrupt_number()), *this);
    m_interrupt_number = number;
    register_generic_interrupt_handler(InterruptManagement::acquire_mapped_interrupt_number(interrupt_number()), *this);
}
void GenericInterruptHandler::increment_invoking_counter()
{
    m_invoking_count++;
}
}