bc107d0b33
We can now properly initialize all processors without crashing by sending SMP IPI messages to synchronize memory between processors. We now initialize the APs once we have the scheduler running. This is so that we can process IPI messages from the other cores. Also rework interrupt handling a bit so that it's more of a 1:1 mapping. We need to allocate non-sharable interrupts for IPIs. This also fixes the occasional hang/crash because all CPUs now synchronize memory with each other.
76 lines
2.7 KiB
C++
76 lines
2.7 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/HashTable.h>
|
|
#include <AK/String.h>
|
|
#include <AK/Types.h>
|
|
#include <Kernel/Arch/i386/CPU.h>
|
|
|
|
namespace Kernel {
|
|
|
|
enum class HandlerType : u8 {
|
|
IRQHandler = 1,
|
|
SharedIRQHandler = 2,
|
|
UnhandledInterruptHandler = 3,
|
|
SpuriousInterruptHandler = 4
|
|
};
|
|
|
|
class GenericInterruptHandler {
|
|
public:
|
|
static GenericInterruptHandler& from(u8 interrupt_number);
|
|
virtual ~GenericInterruptHandler();
|
|
virtual void handle_interrupt(const RegisterState& regs) = 0;
|
|
|
|
u8 interrupt_number() const { return m_interrupt_number; }
|
|
|
|
bool is_enabled() const { return m_enabled; }
|
|
|
|
size_t get_invoking_count() const { return m_invoking_count; }
|
|
|
|
virtual size_t sharing_devices_count() const = 0;
|
|
virtual bool is_shared_handler() const = 0;
|
|
virtual bool is_sharing_with_others() const = 0;
|
|
|
|
virtual HandlerType type() const = 0;
|
|
virtual const char* purpose() const = 0;
|
|
virtual const char* controller() const = 0;
|
|
|
|
virtual bool eoi() = 0;
|
|
void increment_invoking_counter();
|
|
|
|
protected:
|
|
void change_interrupt_number(u8 number);
|
|
explicit GenericInterruptHandler(u8 interrupt_number, bool disable_remap = false);
|
|
|
|
private:
|
|
size_t m_invoking_count { 0 };
|
|
bool m_enabled { false };
|
|
u8 m_interrupt_number { 0 };
|
|
bool m_disable_remap { false };
|
|
};
|
|
}
|