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Kernel: Abstract IRQ controller handling from Interrupt handlers

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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.
This commit is contained in:
Liav A 2020-03-08 12:47:33 +02:00 • committed by Andreas Kling
parent 666990fbcb
commit f86be46c98
11 changed files with 97 additions and 45 deletions
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10
Kernel/Interrupts/IRQController.h
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@ -41,14 +41,16 @@ class IRQController : public RefCounted<IRQController> {
public:
virtual ~IRQController() {}
virtual void enable(u8 number) = 0;
virtual void disable(u8 number) = 0;
virtual void enable(const GenericInterruptHandler&) = 0;
virtual void disable(const GenericInterruptHandler&) = 0;
virtual void hard_disable() { m_hard_disabled = true; }
virtual bool is_vector_enabled(u8 number) const = 0;
bool is_enabled() const { return m_enabled && !m_hard_disabled; }
bool is_hard_disabled() const { return m_hard_disabled; }
virtual void eoi(u8 number) const = 0;
virtual u32 get_gsi_base() const = 0;
virtual void eoi(const GenericInterruptHandler&) const = 0;
virtual void spurious_eoi(const GenericInterruptHandler&) const = 0;
virtual size_t interrupt_vectors_count() const = 0;
virtual u32 gsi_base() const = 0;
virtual u16 get_isr() const = 0;
virtual u16 get_irr() const = 0;
virtual const char* model() const = 0;