i8259.c File Reference

#include <bsp.h>
#include <bsp/irq.h>
#include <bsp/i8259.h>
#include <bsp/pci.h>
#include <bsp/irq-generic.h>
#include <rtems/bspIo.h>

Macros
#define	DEBUG_8259   1
#define	ValidateIrqLine(_irq)
#define	PCI__GEN(bus, off, num)
#define	PCI_INTR_ACK(bus)

Functions
int	BSP_irq_disable_at_i8259s (const rtems_irq_number irqLine)
	function to disable a particular irq at 8259 level.
int	BSP_irq_enable_at_i8259s (const rtems_irq_number irqLine)
	function to enable a particular irq at 8259 level.
int	BSP_irq_enabled_at_i8259s (const rtems_irq_number irqLine)
	function to check if a particular irq is enabled at 8259 level.
int	BSP_irq_ack_at_i8259s (const rtems_irq_number irqLine)
	function to acknowledge a particular irq at 8259 level.
void	BSP_i8259s_init (void)
void	bsp_show_interrupt_regs (void)
int	BSP_i8259s_int_process ()

Variables
volatile rtems_i8259_masks	i8259s_cache = 0xfffb

Detailed Description

This file was based upon the powerpc and the i386.

Macro Definition Documentation

PCI__GEN

#define PCI__GEN	(		bus,
			off,
			num )

Value:

(((off)^((bus) << 7))+((num) << 4))

PCI_INTR_ACK

#define PCI_INTR_ACK

(

bus

)

Value:

PCI__GEN(bus, 0x0c34, 0)

ValidateIrqLine

#define ValidateIrqLine

(

_irq

)

Value:

if ( ((int)_irq < 0) ||((int)_irq > 16)) return 1;