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Kernel: Replace IRQHandler with the new InterruptHandler class

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System components that need an IRQ handling are now inheriting the
InterruptHandler class.

In addition to that, the initialization process of PATAChannel was
changed to fit the changes.
PATAChannel, E1000NetworkAdapter and RTL8139NetworkAdapter are now
inheriting from PCI::Device instead of InterruptHandler directly.
This commit is contained in:
Liav A 2020-01-21 13:23:03 +02:00 • committed by Andreas Kling
parent 1ee37245cd
commit 6c72736b26
29 changed files with 193 additions and 169 deletions
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24
Kernel/Arch/i386/CPU.cpp
View file

@ -26,12 +26,12 @@
#include "APIC.h"
#include "Assertions.h"
#include "IRQHandler.h"
#include "PIC.h"
#include "Process.h"
#include <AK/Types.h>
#include <Kernel/Arch/i386/CPU.h>
#include <Kernel/KSyms.h>
#include <Kernel/SharedInterruptHandler.h>
#include <Kernel/VM/MemoryManager.h>
#include <LibC/mallocdefs.h>
@ -48,7 +48,7 @@ static DescriptorTablePointer s_gdtr;
static Descriptor s_idt[256];
static Descriptor s_gdt[256];
static IRQHandler* s_irq_handler[16];
static SharedInterruptHandler* s_irq_handler[256];
static Vector<u16>* s_gdt_freelist;
@ -435,18 +435,25 @@ static void unimp_trap()
hang();
}
void register_irq_handler(u8 irq, IRQHandler& handler)
void register_shared_interrupt_handler(u8 irq, SharedInterruptHandler& handler)
{
ASSERT(!s_irq_handler[irq]);
s_irq_handler[irq] = &handler;
}
void unregister_irq_handler(u8 irq, IRQHandler& handler)
void unregister_shared_interrupt_handler(u8 irq, SharedInterruptHandler& handler)
{
ASSERT(s_irq_handler[irq] == &handler);
s_irq_handler[irq] = nullptr;
}
SharedInterruptHandler& get_interrupt_handler(u8 number)
{
ASSERT(number < 256);
ASSERT(s_irq_handler[number] != nullptr);
return *s_irq_handler[number];
}
void register_interrupt_handler(u8 index, void (*f)())
{
s_idt[index].low = 0x00080000 | LSW((f));
@ -524,8 +531,8 @@ void idt_init()
register_interrupt_handler(0x5e, irq_14_asm_entry);
register_interrupt_handler(0x5f, irq_15_asm_entry);
for (u8 i = 0; i < 16; ++i) {
s_irq_handler[i] = nullptr;
for (u8 i = 0; i < 255; ++i) {
SharedInterruptHandler::initialize(i);
}
flush_idt();
@ -541,8 +548,9 @@ void handle_irq(RegisterDump regs)
clac();
ASSERT(regs.isr_number >= 0x50 && regs.isr_number <= 0x5f);
u8 irq = (u8)(regs.isr_number - 0x50);
if (s_irq_handler[irq])
s_irq_handler[irq]->handle_irq();
ASSERT(s_irq_handler[irq] != nullptr);
s_irq_handler[irq]->handle_interrupt();
// FIXME: Determine if we use IRQs or MSIs (in the future) to send EOI...
PIC::eoi(irq);
}