minix/kernel/arch/i386/include/hw_intr.h

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#ifndef __HW_INTR_X86_H__
#define __HW_INTR_X86_H__
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#include "kernel/kernel.h"
void irq_8259_unmask(int irq);
void irq_8259_mask(int irq);
void irq_8259_eoi(int irq);
void irq_handle(int irq);
void i8259_disable(void);
void eoi_8259_master(void);
void eoi_8259_slave(void);
/*
* we don't use IO APIC if not configured for SMP as we cannot read any info
* about it unless we use MPS which is not present on all single CPU
* configurations. ACPI would be another option, however we don't support it
* either
*/
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#if defined(USE_APIC)
#include "arch/i386/apic.h"
#define hw_intr_mask(irq) ioapic_mask_irq(irq)
#define hw_intr_unmask(irq) ioapic_unmask_irq(irq)
#define hw_intr_ack(irq) ioapic_eoi(irq)
#define hw_intr_used(irq) do { \
if (ioapic_enabled) \
ioapic_set_irq(irq); \
} while (0)
#define hw_intr_not_used(irq) do { \
if (ioapic_enabled) \
ioapic_unset_irq(irq); \
} while (0)
#define hw_intr_disable_all() do { \
ioapic_disable_all(); \
ioapic_reset_pic(); \
lapic_disable(); \
} while (0)
#ifdef CONFIG_SMP
#define ipi_ack apic_eoi
#endif
#else
/* legacy PIC */
#define hw_intr_mask(irq) irq_8259_mask(irq)
#define hw_intr_unmask(irq) irq_8259_unmask(irq)
#define hw_intr_ack(irq) irq_8259_eoi(irq)
#define hw_intr_used(irq)
#define hw_intr_not_used(irq)
#define hw_intr_disable_all()
#endif
#endif /* __HW_INTR_X86_H__ */