26 lines
638 B
C
26 lines
638 B
C
// ke_irq.c — IRQ dispatch, kernel-side
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#include <ke_irq.h>
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#include <hal_api.h>
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#define MAX_IRQS 24
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static void (*gIrqHandlers[MAX_IRQS])(void);
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static const HAL_API *gHal;
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void KeIrqInitialize(const HAL_API *hal) {
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gHal = hal;
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}
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void KeIrqRegister(uint8_t irq, void (*handler)(void)) {
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if (irq >= MAX_IRQS || !handler) return;
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gIrqHandlers[irq] = handler;
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gHal->Intc.RouteIrq(irq);
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}
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void KeIrqDispatch(uint8_t irq) {
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// eoi first, handler second because it doesn't work otherwise.
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gHal->Intc.SendEoi();
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if (irq < MAX_IRQS && gIrqHandlers[irq])
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gIrqHandlers[irq]();
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}
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