pic.h

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#ifndef KERNEL_ARCH_I686_DEVICES_PIC_H
#define KERNEL_ARCH_I686_DEVICES_PIC_H
 
#include <stdint.h>
 
/* Offset vectors
 *
 * They are set to 0x20 and 0x28 to not conflict with CPU exceptions
 * in protected mode.
 */
#define PIC_MASTER_VECTOR 0x20
#define PIC_SLAVE_VECTOR 0x28
 
typedef enum pic_irq {
    IRQ_TIMER = 0, 
    IRQ_KEYBOARD,  
    IRQ_CASCADE,   
    IRQ_COM2,      
    IRQ_COM1,      
    IRQ_LPT2,
    IRQ_FLOPPY,
    IRQ_LPT1,
    IRQ_CMOS,
    IRQ_FREE1,
    IRQ_FREE2,
    IRQ_FREE3,
    IRQ_PS2,
    IRQ_FPU,
    IRQ_ATA_PRIMARY,
    IRQ_ATA_SECONDARY
} pic_irq;
 
#define PIC_IRQ_COUNT (IRQ_ATA_SECONDARY + 1)
 
void pic_reset();
 
void pic_eoi(pic_irq);
 
void pic_disable_irq(pic_irq);
 
void pic_enable_irq(pic_irq);
 
#endif /* KERNEL_ARCH_I686_DEVICES_PIC_H */