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https://github.com/RGBCube/serenity
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6fd478b6ce
These instances were detected by searching for files that include AK/Format.h, but don't match the regex: \\b(CheckedFormatString|critical_dmesgln|dbgln|dbgln_if|dmesgln|FormatBu ilder|__FormatIfSupported|FormatIfSupported|FormatParser|FormatString|Fo rmattable|Formatter|__format_value|HasFormatter|max_format_arguments|out |outln|set_debug_enabled|StandardFormatter|TypeErasedFormatParams|TypeEr asedParameter|VariadicFormatParams|v_critical_dmesgln|vdbgln|vdmesgln|vf ormat|vout|warn|warnln|warnln_if)\\b (Without the linebreaks.) This regex is pessimistic, so there might be more files that don't actually use any formatting functions. Observe that this revealed that Userland/Libraries/LibC/signal.cpp is missing an include. In theory, one might use LibCPP to detect things like this automatically, but let's do this one step after another.
68 lines
2 KiB
C++
68 lines
2 KiB
C++
/*
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* Copyright (c) 2022, Timon Kruiper <timonkruiper@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Arch/aarch64/RPi/InterruptController.h>
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#include <Kernel/Arch/aarch64/RPi/MMIO.h>
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#include <Kernel/Interrupts/GenericInterruptHandler.h>
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namespace Kernel::RPi {
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// "7.5 Interrupts Registers"
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// https://github.com/raspberrypi/documentation/files/1888662/BCM2837-ARM-Peripherals.-.Revised.-.V2-1.pdf
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struct InterruptControllerRegisters {
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u32 irq_basic_pending;
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u32 irq_pending_1;
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u32 irq_pending_2;
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u32 fiq_control;
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u32 enable_irqs_1;
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u32 enable_irqs_2;
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u32 enable_basic_irqs;
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u32 disable_irqs_1;
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u32 disable_irqs_2;
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u32 disable_basic_irqs;
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};
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InterruptController::InterruptController()
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: m_registers(MMIO::the().peripheral<InterruptControllerRegisters>(0xB200))
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{
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}
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void InterruptController::enable(GenericInterruptHandler const& handler)
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{
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u8 interrupt_number = handler.interrupt_number();
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VERIFY(interrupt_number < 64);
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if (interrupt_number < 32)
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m_registers->enable_irqs_1 = m_registers->enable_irqs_1 | (1 << interrupt_number);
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else
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m_registers->enable_irqs_2 = m_registers->enable_irqs_2 | (1 << (interrupt_number - 32));
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}
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void InterruptController::disable(GenericInterruptHandler const& handler)
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{
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u8 interrupt_number = handler.interrupt_number();
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VERIFY(interrupt_number < 64);
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if (interrupt_number < 32)
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m_registers->disable_irqs_1 = m_registers->disable_irqs_1 | (1 << interrupt_number);
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else
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m_registers->disable_irqs_2 = m_registers->disable_irqs_2 | (1 << (interrupt_number - 32));
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}
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void InterruptController::eoi(GenericInterruptHandler const&) const
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{
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// NOTE: The interrupt controller cannot clear the interrupt, since it is basically just a big multiplexer.
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// The interrupt should be cleared by the corresponding device driver, such as a timer or uart.
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}
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u64 InterruptController::pending_interrupts() const
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{
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return ((u64)m_registers->irq_pending_2 << 32) | (u64)m_registers->irq_pending_1;
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}
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}
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