LadybirdBrowser/ladybird
1
1
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-11-15 07:09:43 +03:00
Code Issues Packages Projects Releases Wiki Activity
37bfaf4e7c
ladybird/Kernel/Interrupts/IRQHandler.cpp

80 lines
2.6 KiB
C++
Raw Normal View History

Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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.
*/
Everywhere: Replace a bundle of dbg with dbgln. These changes are arbitrarily divided into multiple commits to make it easier to find potentially introduced bugs with git bisect.
2021-01-14 02:10:32 +03:00
#include <AK/Debug.h>
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
#include <Kernel/Arch/i386/CPU.h>
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Interrupts/InterruptManagement.h>
namespace Kernel {
IRQHandler::IRQHandler(u8 irq)
: GenericInterruptHandler(irq)
Kernel: Simplify interrupt management The IRQController object is RefCounted, and is shared between the InterruptManagement class & IRQ handlers' classes. IRQHandler, SharedIRQHandler & SpuriousInterruptHandler classes use a responsible IRQ controller directly instead of calling InterruptManagement for disable(), enable() or eoi(). Also, the initialization process of InterruptManagement is simplified, so it doesn't rely on an ACPI parser to be initialized.
2020-02-28 23:33:41 +03:00
, m_responsible_irq_controller(InterruptManagement::the().get_responsible_irq_controller(irq))
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
{
Kernel: Simplify disable_irq() and enable_irq() methods in IRQHandler Setting the m_enabled variable to true or false can help with monitoring the IRQHandler object(s) later, and there's no good reason to have an if-else statement in those methods anyway.
2020-03-20 23:27:53 +03:00
disable_irq();
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
}
IRQHandler::~IRQHandler()
{
}
bool IRQHandler::eoi()
{
Everywhere: Debug macros instead of constexpr. This was done with the following script: find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/dbgln<debug_([a-z_]+)>/dbgln<\U\1_DEBUG>/' {} \; find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/if constexpr \(debug_([a-z0-9_]+)/if constexpr \(\U\1_DEBUG/' {} \;
2021-01-24 01:59:27 +03:00
dbgln<IRQ_DEBUG>("EOI IRQ {}", interrupt_number());
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
if (!m_shared_with_others) {
Kernel: Simplify interrupt management The IRQController object is RefCounted, and is shared between the InterruptManagement class & IRQ handlers' classes. IRQHandler, SharedIRQHandler & SpuriousInterruptHandler classes use a responsible IRQ controller directly instead of calling InterruptManagement for disable(), enable() or eoi(). Also, the initialization process of InterruptManagement is simplified, so it doesn't rely on an ACPI parser to be initialized.
2020-02-28 23:33:41 +03:00
ASSERT(!m_responsible_irq_controller.is_null());
Kernel: Abstract IRQ controller handling from Interrupt handlers Now we don't send raw numbers, but we let the IRQController object to figure out the correct IRQ number. This helps in a situation when we have 2 or more IOAPICs, so if IOAPIC 1 is assigned for IRQs 0-23 and IOAPIC 2 is assigned for IRQs 24-47, if an IRQHandler of IRQ 25 invokes disable() for example, it will call his responsible IRQController (IOAPIC 2), and the IRQController will subtract the IRQ number with his assigned offset, and the result is that the second redirection entry in IOAPIC 2 will be masked.
2020-03-08 13:47:33 +03:00
m_responsible_irq_controller->eoi(*this);
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
return true;
}
return false;
}
void IRQHandler::enable_irq()
{
Everywhere: Debug macros instead of constexpr. This was done with the following script: find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/dbgln<debug_([a-z_]+)>/dbgln<\U\1_DEBUG>/' {} \; find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/if constexpr \(debug_([a-z0-9_]+)/if constexpr \(\U\1_DEBUG/' {} \;
2021-01-24 01:59:27 +03:00
dbgln<IRQ_DEBUG>("Enable IRQ {}", interrupt_number());
Kernel: Simplify disable_irq() and enable_irq() methods in IRQHandler Setting the m_enabled variable to true or false can help with monitoring the IRQHandler object(s) later, and there's no good reason to have an if-else statement in those methods anyway.
2020-03-20 23:27:53 +03:00
m_enabled = true;
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
if (!m_shared_with_others)
Kernel: Abstract IRQ controller handling from Interrupt handlers Now we don't send raw numbers, but we let the IRQController object to figure out the correct IRQ number. This helps in a situation when we have 2 or more IOAPICs, so if IOAPIC 1 is assigned for IRQs 0-23 and IOAPIC 2 is assigned for IRQs 24-47, if an IRQHandler of IRQ 25 invokes disable() for example, it will call his responsible IRQController (IOAPIC 2), and the IRQController will subtract the IRQ number with his assigned offset, and the result is that the second redirection entry in IOAPIC 2 will be masked.
2020-03-08 13:47:33 +03:00
m_responsible_irq_controller->enable(*this);
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
}
void IRQHandler::disable_irq()
{
Everywhere: Debug macros instead of constexpr. This was done with the following script: find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/dbgln<debug_([a-z_]+)>/dbgln<\U\1_DEBUG>/' {} \; find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/if constexpr \(debug_([a-z0-9_]+)/if constexpr \(\U\1_DEBUG/' {} \;
2021-01-24 01:59:27 +03:00
dbgln<IRQ_DEBUG>("Disable IRQ {}", interrupt_number());
Kernel: Simplify disable_irq() and enable_irq() methods in IRQHandler Setting the m_enabled variable to true or false can help with monitoring the IRQHandler object(s) later, and there's no good reason to have an if-else statement in those methods anyway.
2020-03-20 23:27:53 +03:00
m_enabled = false;
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
if (!m_shared_with_others)
Kernel: Abstract IRQ controller handling from Interrupt handlers Now we don't send raw numbers, but we let the IRQController object to figure out the correct IRQ number. This helps in a situation when we have 2 or more IOAPICs, so if IOAPIC 1 is assigned for IRQs 0-23 and IOAPIC 2 is assigned for IRQs 24-47, if an IRQHandler of IRQ 25 invokes disable() for example, it will call his responsible IRQController (IOAPIC 2), and the IRQController will subtract the IRQ number with his assigned offset, and the result is that the second redirection entry in IOAPIC 2 will be masked.
2020-03-08 13:47:33 +03:00
m_responsible_irq_controller->disable(*this);
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
}
void IRQHandler::change_irq_number(u8 irq)
{
InterruptDisabler disabler;
change_interrupt_number(irq);
Kernel: Simplify interrupt management The IRQController object is RefCounted, and is shared between the InterruptManagement class & IRQ handlers' classes. IRQHandler, SharedIRQHandler & SpuriousInterruptHandler classes use a responsible IRQ controller directly instead of calling InterruptManagement for disable(), enable() or eoi(). Also, the initialization process of InterruptManagement is simplified, so it doesn't rely on an ACPI parser to be initialized.
2020-02-28 23:33:41 +03:00
m_responsible_irq_controller = InterruptManagement::the().get_responsible_irq_controller(irq);
Kernel: Add new IRQHandler class This class will replace the old IRQHandler class later.
2020-02-22 20:40:15 +03:00
}
}
Reference in New Issue Copy Permalink