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Kernel: Replace IRQHandler with the new InterruptHandler class
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.
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1ee37245cd
commit
6c72736b26
29 changed files with 193 additions and 169 deletions
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@ -26,12 +26,12 @@
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#include "APIC.h"
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#include "Assertions.h"
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#include "IRQHandler.h"
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#include "PIC.h"
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#include "Process.h"
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#include <AK/Types.h>
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#include <Kernel/Arch/i386/CPU.h>
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#include <Kernel/KSyms.h>
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#include <Kernel/SharedInterruptHandler.h>
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#include <Kernel/VM/MemoryManager.h>
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#include <LibC/mallocdefs.h>
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@ -48,7 +48,7 @@ static DescriptorTablePointer s_gdtr;
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static Descriptor s_idt[256];
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static Descriptor s_gdt[256];
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static IRQHandler* s_irq_handler[16];
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static SharedInterruptHandler* s_irq_handler[256];
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static Vector<u16>* s_gdt_freelist;
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@ -435,18 +435,25 @@ static void unimp_trap()
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hang();
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}
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void register_irq_handler(u8 irq, IRQHandler& handler)
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void register_shared_interrupt_handler(u8 irq, SharedInterruptHandler& handler)
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{
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ASSERT(!s_irq_handler[irq]);
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s_irq_handler[irq] = &handler;
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}
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void unregister_irq_handler(u8 irq, IRQHandler& handler)
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void unregister_shared_interrupt_handler(u8 irq, SharedInterruptHandler& handler)
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{
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ASSERT(s_irq_handler[irq] == &handler);
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s_irq_handler[irq] = nullptr;
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}
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SharedInterruptHandler& get_interrupt_handler(u8 number)
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{
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ASSERT(number < 256);
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ASSERT(s_irq_handler[number] != nullptr);
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return *s_irq_handler[number];
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}
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void register_interrupt_handler(u8 index, void (*f)())
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{
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s_idt[index].low = 0x00080000 | LSW((f));
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@ -524,8 +531,8 @@ void idt_init()
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register_interrupt_handler(0x5e, irq_14_asm_entry);
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register_interrupt_handler(0x5f, irq_15_asm_entry);
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for (u8 i = 0; i < 16; ++i) {
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s_irq_handler[i] = nullptr;
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for (u8 i = 0; i < 255; ++i) {
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SharedInterruptHandler::initialize(i);
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}
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flush_idt();
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@ -541,8 +548,9 @@ void handle_irq(RegisterDump regs)
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clac();
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ASSERT(regs.isr_number >= 0x50 && regs.isr_number <= 0x5f);
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u8 irq = (u8)(regs.isr_number - 0x50);
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if (s_irq_handler[irq])
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s_irq_handler[irq]->handle_irq();
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ASSERT(s_irq_handler[irq] != nullptr);
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s_irq_handler[irq]->handle_interrupt();
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// FIXME: Determine if we use IRQs or MSIs (in the future) to send EOI...
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PIC::eoi(irq);
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}
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