32 lines
No EOL
648 B
C
32 lines
No EOL
648 B
C
/* EMK 1.0 Copyright (c) 2025 Piraterna */
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#include <dev/pit.h>
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#include <arch/io.h>
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#include <sys/apic/lapic.h>
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#include <sys/apic/ioapic.h>
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#include <util/log.h>
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#define PIT_VECTOR 32
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void (*pit_callback)(struct register_ctx *ctx) = NULL;
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void pit_handler(struct register_ctx *frame)
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{
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if (pit_callback)
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pit_callback(frame);
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lapic_eoi();
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}
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void pit_init(idt_intr_handler handler)
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{
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if (handler)
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pit_callback = handler;
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outb(0x43, 0x36);
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uint16_t divisor = 5966;
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outb(0x40, divisor & 0xFF);
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outb(0x40, (divisor >> 8) & 0xFF);
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ioapic_map(0, PIT_VECTOR, pit_handler, 0);
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ioapic_unmask(0);
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} |