LCOM1920-T02G10

/* Interrupt numbers and hardware vectors. */

#ifndef _INTERRUPT_H

#define _INTERRUPT_H

#if defined(__i386__)

/* 8259A interrupt controller ports. */

#define INT_CTL         0x20        /* I/O port for interrupt controller */

#define INT_CTLMASK     0x21        /* setting bits in this port disables ints */

#define INT2_CTL        0xA0        /* I/O port for second interrupt controller */

#define INT2_CTLMASK    0xA1        /* setting bits in this port disables ints */

/* Magic numbers for interrupt controller. */

#define END_OF_INT      0x20        /* code used to re-enable after an interrupt */

#define IRQ0_VECTOR     0x50   /* nice vectors to relocate IRQ0-7 to */

#define IRQ8_VECTOR     0x70   /* no need to move IRQ8-15 */

/* Interrupt vectors defined/reserved by processor. */

#define DIVIDE_VECTOR      0        /* divide error */

#define DEBUG_VECTOR       1        /* single step (trace) */

#define NMI_VECTOR         2        /* non-maskable interrupt */

#define BREAKPOINT_VECTOR  3        /* software breakpoint */

#define OVERFLOW_VECTOR    4        /* from INTO */

/* Fixed system call vector. */

#define KERN_CALL_VECTOR_ORIG  32 /* system calls are made with int SYSVEC */

#define IPC_VECTOR_ORIG        33 /* interrupt vector for ipc */

#define KERN_CALL_VECTOR_UM    34 /* user-mapped equivalent */

#define IPC_VECTOR_UM          35 /* user-mapped equivalent */

/* Hardware interrupt numbers. */

#ifndef USE_APIC

#define NR_IRQ_VECTORS    16

#else

#define NR_IRQ_VECTORS    64

#endif

#define CLOCK_IRQ          0

#define KEYBOARD_IRQ       1

#define CASCADE_IRQ        2        /* cascade enable for 2nd AT controller */

#define ETHER_IRQ          3        /* default ethernet interrupt vector */

#define SECONDARY_IRQ      3        /* RS232 interrupt vector for port 2 */

#define RS232_IRQ          4        /* RS232 interrupt vector for port 1 */

#define XT_WINI_IRQ        5        /* xt winchester */

#define FLOPPY_IRQ         6        /* floppy disk */

#define PRINTER_IRQ        7

#define SPURIOUS_IRQ       7

#define CMOS_CLOCK_IRQ     8

#define KBD_AUX_IRQ       12        /* AUX (PS/2 mouse) port in kbd controller */

#define AT_WINI_0_IRQ     14        /* at winchester controller 0 */

#define AT_WINI_1_IRQ     15        /* at winchester controller 1 */

#define VECTOR(irq)    \

       (((irq) < 8 ? IRQ0_VECTOR : IRQ8_VECTOR) + ((irq) & 0x07))

#endif /* (CHIP == INTEL) */

#endif /* _INTERRUPT_H */