jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <Kernel/Arch/InterruptManagement.h>
8#include <Kernel/Debug.h>
9#include <Kernel/InterruptDisabler.h>
10#include <Kernel/Interrupts/IRQHandler.h>
11
12namespace Kernel {
13
14IRQHandler::IRQHandler(u8 irq)
15 : GenericInterruptHandler(irq)
16 , m_responsible_irq_controller(InterruptManagement::the().get_responsible_irq_controller(irq))
17{
18 if (is_registered())
19 disable_irq();
20}
21
22IRQHandler::~IRQHandler() = default;
23
24bool IRQHandler::eoi()
25{
26 dbgln_if(IRQ_DEBUG, "EOI IRQ {}", interrupt_number());
27 if (!m_shared_with_others) {
28 m_responsible_irq_controller->eoi(*this);
29 return true;
30 }
31 return false;
32}
33
34void IRQHandler::enable_irq()
35{
36 dbgln_if(IRQ_DEBUG, "Enable IRQ {}", interrupt_number());
37 if (!is_registered())
38 register_interrupt_handler();
39 m_enabled = true;
40 if (!m_shared_with_others)
41 m_responsible_irq_controller->enable(*this);
42}
43
44void IRQHandler::disable_irq()
45{
46 dbgln_if(IRQ_DEBUG, "Disable IRQ {}", interrupt_number());
47 m_enabled = false;
48 if (!m_shared_with_others)
49 m_responsible_irq_controller->disable(*this);
50}
51
52void IRQHandler::change_irq_number(u8 irq)
53{
54 InterruptDisabler disabler;
55 change_interrupt_number(irq);
56 m_responsible_irq_controller = InterruptManagement::the().get_responsible_irq_controller(irq);
57}
58
59}