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include/arch/x86_64/pic.h

429 bytes raw

 1#ifndef FURIX_ARCH_X86_64_PIC_H
 2#define FURIX_ARCH_X86_64_PIC_H
 3
 4#include <types.h>
 5
 6/*
 7 * mask all legacy 8259 PIC interrupts.
 8 *
 9 * interrupts route through the LAPIC once it is enabled, but the two 8259s
10 * are still unmapped at whatever vector base firmware left them at, so a stray
11 * IRQ0 (the PIT timer) arrives as a bogus vector the moment we execute STI.
12 */
13void pic_disarm(void);
14
15#endif /* FURIX_ARCH_X86_64_PIC_H */